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MMC core:

Browse source 
- Continue to re-factor code to prepare for eMMC CMDQ and blkmq support
  - Introduce queue semantics to prepare for eMMC CMDQ and blkmq support
  - Add helper functions to manage temporary enable/disable of eMMC CMDQ
  - Improve wait-busy detection for SDIO
 
 MMC host:
  - cavium: Add driver to support Cavium controllers
  - cavium: Extend Cavium driver to support Octeon SOCs and ThunderX SOCs
  - bcm2835: Add new driver for Broadcom BCM2835 controller
  - sdhci-xenon: Add driver to support Marvell Xenon SDHCI controller
  - sdhci-tegra: Add support for the Tegra186 variant
  - sdhci-of-esdhc: Support for UHS-I SD cards
  - sdhci-of-esdhc: Support for eMMC HS200 cards
  - sdhci-cadence: Add eMMC HS400 enhanced strobe support
  - sdhci-esdhc-imx: Reset tuning circuit when needed
  - sdhci-pci: Modernize and clean-up some PM related code
  - sdhci-pci: Avoid re-tuning at runtime PM for some Intel devices
  - sdhci-pci|acpi: Use aggressive PM for some Intel BYT controllers
  - sdhci: Re-factoring and modernizations
  - sdhci: Optimize delay loops
  - sdhci: Improve register dump print format
  - sdhci: Add support for the Command Queue Engine
  - meson-gx: Various improvements and clean-ups
  - meson-gx: Add support for CMD23
  - meson-gx: Basic tuning support to avoid CRC errors
  - s3cmci: Enable probing via DT
  - mediatek: Improve tuning support for eMMC HS200 and HS400 mode
  - tmio: Improve DMA support
  - tmio: Use correct response for CMD12
  - dw_mmc: Minor improvements and clean-ups
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Merge tag 'mmc-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Continue to re-factor code to prepare for eMMC CMDQ and blkmq support
   - Introduce queue semantics to prepare for eMMC CMDQ and blkmq support
   - Add helper functions to manage temporary enable/disable of eMMC CMDQ
   - Improve wait-busy detection for SDIO

  MMC host:
   - cavium: Add driver to support Cavium controllers
   - cavium: Extend Cavium driver to support Octeon and ThunderX SOCs
   - bcm2835: Add new driver for Broadcom BCM2835 controller
   - sdhci-xenon: Add driver to support Marvell Xenon SDHCI controller
   - sdhci-tegra: Add support for the Tegra186 variant
   - sdhci-of-esdhc: Support for UHS-I SD cards
   - sdhci-of-esdhc: Support for eMMC HS200 cards
   - sdhci-cadence: Add eMMC HS400 enhanced strobe support
   - sdhci-esdhc-imx: Reset tuning circuit when needed
   - sdhci-pci: Modernize and clean-up some PM related code
   - sdhci-pci: Avoid re-tuning at runtime PM for some Intel devices
   - sdhci-pci|acpi: Use aggressive PM for some Intel BYT controllers
   - sdhci: Re-factoring and modernizations
   - sdhci: Optimize delay loops
   - sdhci: Improve register dump print format
   - sdhci: Add support for the Command Queue Engine
   - meson-gx: Various improvements and clean-ups
   - meson-gx: Add support for CMD23
   - meson-gx: Basic tuning support to avoid CRC errors
   - s3cmci: Enable probing via DT
   - mediatek: Improve tuning support for eMMC HS200 and HS400 mode
   - tmio: Improve DMA support
   - tmio: Use correct response for CMD12
   - dw_mmc: Minor improvements and clean-ups"

* tag 'mmc-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (148 commits)
  mmc: sdhci-of-esdhc: limit SD clock for ls1012a/ls1046a
  mmc: sdhci-of-esdhc: poll ESDHC_CLOCK_STABLE bit with udelay
  mmc: sdhci-xenon: Fix default value of LOGIC_TIMING_ADJUST for eMMC5.0 PHY
  mmc: sdhci-xenon: Fix the work flow in xenon_remove().
  MIPS: Octeon: cavium_octeon_defconfig: Enable Octeon MMC
  mmc: sdhci-xenon: Remove redundant dev_err call in get_dt_pad_ctrl_data()
  mmc: cavium: Use module_pci_driver to simplify the code
  mmc: cavium: Add MMC support for Octeon SOCs.
  mmc: cavium: Fix detection of block or byte addressing.
  mmc: core: Export API to allow hosts to get the card address
  mmc: sdio: Fix sdio wait busy implement limitation
  mmc: sdhci-esdhc-imx: reset tuning circuit when power on mmc card
  clk: apn806: fix spelling mistake: "mising" -> "missing"
  mmc: sdhci-of-esdhc: add delay between tuning cycles
  mmc: sdhci: Control the delay between tuning commands
  mmc: sdhci-of-esdhc: add tuning support
  mmc: sdhci-of-esdhc: add support for signal voltage switch
  mmc: sdhci-of-esdhc: add peripheral clock support
  mmc: sdhci-pci: Allow for 3 bytes from Intel DSM
  mmc: cavium: Fix a shift wrapping bug
  ...
This commit is contained in:
Linus Torvalds 2017-05-02 17:34:32 -07:00
commit be580e7522
79 changed files with 7991 additions and 1662 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

23
Documentation/devicetree/bindings/mmc/brcm,bcm2835-sdhost.txt Normal file
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@ -0,0 +1,23 @@
Broadcom BCM2835 SDHOST controller
This file documents differences between the core properties described
by mmc.txt and the properties that represent the BCM2835 controller.
Required properties:
- compatible: Should be "brcm,bcm2835-sdhost".
- clocks: The clock feeding the SDHOST controller.
Optional properties:
- dmas: DMA channel for read and write.
See Documentation/devicetree/bindings/dma/dma.txt for details
Example:
sdhost: mmc@7e202000 {
compatible = "brcm,bcm2835-sdhost";
reg = <0x7e202000 0x100>;
interrupts = <2 24>;
clocks = <&clocks BCM2835_CLOCK_VPU>;
dmas = <&dma 13>;
dma-names = "rx-tx";
};

57
Documentation/devicetree/bindings/mmc/cavium-mmc.txt Normal file
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@ -0,0 +1,57 @@
* Cavium Octeon & ThunderX MMC controller
The highspeed MMC host controller on Caviums SoCs provides an interface
for MMC and SD types of memory cards.
Supported maximum speeds are the ones of the eMMC standard 4.41 as well
as the speed of SD standard 4.0. Only 3.3 Volt is supported.
Required properties:
- compatible : should be one of:
cavium,octeon-6130-mmc
cavium,octeon-7890-mmc
cavium,thunder-8190-mmc
cavium,thunder-8390-mmc
mmc-slot
- reg : mmc controller base registers
- clocks : phandle
Optional properties:
- for cd, bus-width and additional generic mmc parameters
please refer to mmc.txt within this directory
- cavium,cmd-clk-skew : number of coprocessor clocks before sampling command
- cavium,dat-clk-skew : number of coprocessor clocks before sampling data
Deprecated properties:
- spi-max-frequency : use max-frequency instead
- cavium,bus-max-width : use bus-width instead
- power-gpios : use vmmc-supply instead
- cavium,octeon-6130-mmc-slot : use mmc-slot instead
Examples:
mmc_1_4: mmc@1,4 {
compatible = "cavium,thunder-8390-mmc";
reg = <0x0c00 0 0 0 0>; /* DEVFN = 0x0c (1:4) */
#address-cells = <1>;
#size-cells = <0>;
clocks = <&sclk>;
mmc-slot@0 {
compatible = "mmc-slot";
reg = <0>;
vmmc-supply = <&mmc_supply_3v3>;
max-frequency = <42000000>;
bus-width = <4>;
cap-sd-highspeed;
};
mmc-slot@1 {
compatible = "mmc-slot";
reg = <1>;
vmmc-supply = <&mmc_supply_3v3>;
max-frequency = <42000000>;
bus-width = <8>;
cap-mmc-highspeed;
non-removable;
};
};

170
Documentation/devicetree/bindings/mmc/marvell,xenon-sdhci.txt Normal file
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@ -0,0 +1,170 @@
Marvell Xenon SDHCI Controller device tree bindings
This file documents differences between the core mmc properties
described by mmc.txt and the properties used by the Xenon implementation.
Multiple SDHCs might be put into a single Xenon IP, to save size and cost.
Each SDHC is independent and owns independent resources, such as register sets,
clock and PHY.
Each SDHC should have an independent device tree node.
Required Properties:
- compatible: should be one of the following
- "marvell,armada-3700-sdhci": For controllers on Armada-3700 SoC.
Must provide a second register area and marvell,pad-type.
- "marvell,armada-ap806-sdhci": For controllers on Armada AP806.
- "marvell,armada-cp110-sdhci": For controllers on Armada CP110.
- clocks:
Array of clocks required for SDHC.
Require at least input clock for Xenon IP core.
- clock-names:
Array of names corresponding to clocks property.
The input clock for Xenon IP core should be named as "core".
- reg:
* For "marvell,armada-3700-sdhci", two register areas.
The first one for Xenon IP register. The second one for the Armada 3700 SoC
PHY PAD Voltage Control register.
Please follow the examples with compatible "marvell,armada-3700-sdhci"
in below.
Please also check property marvell,pad-type in below.
* For other compatible strings, one register area for Xenon IP.
Optional Properties:
- marvell,xenon-sdhc-id:
Indicate the corresponding bit index of current SDHC in
SDHC System Operation Control Register Bit[7:0].
Set/clear the corresponding bit to enable/disable current SDHC.
If Xenon IP contains only one SDHC, this property is optional.
- marvell,xenon-phy-type:
Xenon support multiple types of PHYs.
To select eMMC 5.1 PHY, set:
marvell,xenon-phy-type = "emmc 5.1 phy"
eMMC 5.1 PHY is the default choice if this property is not provided.
To select eMMC 5.0 PHY, set:
marvell,xenon-phy-type = "emmc 5.0 phy"
All those types of PHYs can support eMMC, SD and SDIO.
Please note that this property only presents the type of PHY.
It doesn't stand for the entire SDHC type or property.
For example, "emmc 5.1 phy" doesn't mean that this Xenon SDHC only
supports eMMC 5.1.
- marvell,xenon-phy-znr:
Set PHY ZNR value.
Only available for eMMC PHY.
Valid range = [0:0x1F].
ZNR is set as 0xF by default if this property is not provided.
- marvell,xenon-phy-zpr:
Set PHY ZPR value.
Only available for eMMC PHY.
Valid range = [0:0x1F].
ZPR is set as 0xF by default if this property is not provided.
- marvell,xenon-phy-nr-success-tun:
Set the number of required consecutive successful sampling points
used to identify a valid sampling window, in tuning process.
Valid range = [1:7].
Set as 0x4 by default if this property is not provided.
- marvell,xenon-phy-tun-step-divider:
Set the divider for calculating TUN_STEP.
Set as 64 by default if this property is not provided.
- marvell,xenon-phy-slow-mode:
If this property is selected, transfers will bypass PHY.
Only available when bus frequency lower than 55MHz in SDR mode.
Disabled by default. Please only try this property if timing issues
always occur with PHY enabled in eMMC HS SDR, SD SDR12, SD SDR25,
SD Default Speed and HS mode and eMMC legacy speed mode.
- marvell,xenon-tun-count:
Xenon SDHC SoC usually doesn't provide re-tuning counter in
Capabilities Register 3 Bit[11:8].
This property provides the re-tuning counter.
If this property is not set, default re-tuning counter will
be set as 0x9 in driver.
- marvell,pad-type:
Type of Armada 3700 SoC PHY PAD Voltage Controller register.
Only valid when "marvell,armada-3700-sdhci" is selected.
Two types: "sd" and "fixed-1-8v".
If "sd" is selected, SoC PHY PAD is set as 3.3V at the beginning and is
switched to 1.8V when later in higher speed mode.
If "fixed-1-8v" is selected, SoC PHY PAD is fixed 1.8V, such as for eMMC.
Please follow the examples with compatible "marvell,armada-3700-sdhci"
in below.
Example:
- For eMMC:
sdhci@aa0000 {
compatible = "marvell,armada-ap806-sdhci";
reg = <0xaa0000 0x1000>;
interrupts = <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>
clocks = <&emmc_clk>;
clock-names = "core";
bus-width = <4>;
marvell,xenon-phy-slow-mode;
marvell,xenon-tun-count = <11>;
non-removable;
no-sd;
no-sdio;
/* Vmmc and Vqmmc are both fixed */
};
- For SD/SDIO:
sdhci@ab0000 {
compatible = "marvell,armada-cp110-sdhci";
reg = <0xab0000 0x1000>;
interrupts = <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>
vqmmc-supply = <&sd_vqmmc_regulator>;
vmmc-supply = <&sd_vmmc_regulator>;
clocks = <&sdclk>;
clock-names = "core";
bus-width = <4>;
marvell,xenon-tun-count = <9>;
};
- For eMMC with compatible "marvell,armada-3700-sdhci":
sdhci@aa0000 {
compatible = "marvell,armada-3700-sdhci";
reg = <0xaa0000 0x1000>,
<phy_addr 0x4>;
interrupts = <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>
clocks = <&emmcclk>;
clock-names = "core";
bus-width = <8>;
mmc-ddr-1_8v;
mmc-hs400-1_8v;
non-removable;
no-sd;
no-sdio;
/* Vmmc and Vqmmc are both fixed */
marvell,pad-type = "fixed-1-8v";
};
- For SD/SDIO with compatible "marvell,armada-3700-sdhci":
sdhci@ab0000 {
compatible = "marvell,armada-3700-sdhci";
reg = <0xab0000 0x1000>,
<phy_addr 0x4>;
interrupts = <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>
vqmmc-supply = <&sd_regulator>;
/* Vmmc is fixed */
clocks = <&sdclk>;
clock-names = "core";
bus-width = <4>;
marvell,pad-type = "sd";
};

12
Documentation/devicetree/bindings/mmc/mtk-sd.txt
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@ -21,6 +21,15 @@ Optional properties:
- assigned-clocks: PLL of the source clock
- assigned-clock-parents: parent of source clock, used for HS400 mode to get 400Mhz source clock
- hs400-ds-delay: HS400 DS delay setting
- mediatek,hs200-cmd-int-delay: HS200 command internal delay setting.
This field has total 32 stages.
The value is an integer from 0 to 31.
- mediatek,hs400-cmd-int-delay: HS400 command internal delay setting
This field has total 32 stages.
The value is an integer from 0 to 31.
- mediatek,hs400-cmd-resp-sel-rising: HS400 command response sample selection
If present,HS400 command responses are sampled on rising edges.
If not present,HS400 command responses are sampled on falling edges.
Examples:
mmc0: mmc@11230000 {
@ -38,4 +47,7 @@ mmc0: mmc@11230000 {
assigned-clocks = <&topckgen CLK_TOP_MSDC50_0_SEL>;
assigned-clock-parents = <&topckgen CLK_TOP_MSDCPLL_D2>;
hs400-ds-delay = <0x14015>;
mediatek,hs200-cmd-int-delay = <26>;
mediatek,hs400-cmd-int-delay = <14>;
mediatek,hs400-cmd-resp-sel-rising;
};

12
Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt
View file

@ -7,11 +7,13 @@ This file documents differences between the core properties described
by mmc.txt and the properties used by the sdhci-tegra driver.
Required properties:
- compatible : For Tegra20, must contain "nvidia,tegra20-sdhci".
For Tegra30, must contain "nvidia,tegra30-sdhci". For Tegra114,
must contain "nvidia,tegra114-sdhci". For Tegra124, must contain
"nvidia,tegra124-sdhci". Otherwise, must contain "nvidia,<chip>-sdhci",
plus one of the above, where <chip> is tegra132 or tegra210.
- compatible : should be one of:
- "nvidia,tegra20-sdhci": for Tegra20
- "nvidia,tegra30-sdhci": for Tegra30
- "nvidia,tegra114-sdhci": for Tegra114
- "nvidia,tegra124-sdhci": for Tegra124 and Tegra132
- "nvidia,tegra210-sdhci": for Tegra210
- "nvidia,tegra186-sdhci": for Tegra186
- clocks : Must contain one entry, for the module clock.
See ../clocks/clock-bindings.txt for details.
- resets : Must contain an entry for each entry in reset-names.

8
Documentation/devicetree/bindings/mmc/renesas,mmcif.txt
View file

@ -8,6 +8,7 @@ Required properties:
- compatible: should be "renesas,mmcif-<soctype>", "renesas,sh-mmcif" as a
fallback. Examples with <soctype> are:
- "renesas,mmcif-r7s72100" for the MMCIF found in r7s72100 SoCs
- "renesas,mmcif-r8a73a4" for the MMCIF found in r8a73a4 SoCs
- "renesas,mmcif-r8a7740" for the MMCIF found in r8a7740 SoCs
- "renesas,mmcif-r8a7778" for the MMCIF found in r8a7778 SoCs
@ -17,6 +18,13 @@ Required properties:
- "renesas,mmcif-r8a7794" for the MMCIF found in r8a7794 SoCs
- "renesas,mmcif-sh73a0" for the MMCIF found in sh73a0 SoCs
- interrupts: Some SoCs have only 1 shared interrupt, while others have either
2 or 3 individual interrupts (error, int, card detect). Below is the number
of interrupts for each SoC:
1: r8a73a4, r8a7778, r8a7790, r8a7791, r8a7793, r8a7794
2: r8a7740, sh73a0
3: r7s72100
- clocks: reference to the functional clock
- dmas: reference to the DMA channels, one per channel name listed in the

42
Documentation/devicetree/bindings/mmc/samsung,s3cmci.txt Normal file
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@ -0,0 +1,42 @@
* Samsung's S3C24XX MMC/SD/SDIO controller device tree bindings
Samsung's S3C24XX MMC/SD/SDIO controller is used as a connectivity interface
with external MMC, SD and SDIO storage mediums.
This file documents differences between the core mmc properties described by
mmc.txt and the properties used by the Samsung S3C24XX MMC/SD/SDIO controller
implementation.
Required SoC Specific Properties:
- compatible: should be one of the following
- "samsung,s3c2410-sdi": for controllers compatible with s3c2410
- "samsung,s3c2412-sdi": for controllers compatible with s3c2412
- "samsung,s3c2440-sdi": for controllers compatible with s3c2440
- reg: register location and length
- interrupts: mmc controller interrupt
- clocks: Should reference the controller clock
- clock-names: Should contain "sdi"
Required Board Specific Properties:
- pinctrl-0: Should specify pin control groups used for this controller.
- pinctrl-names: Should contain only one value - "default".
Optional Properties:
- bus-width: number of data lines (see mmc.txt)
- cd-gpios: gpio for card detection (see mmc.txt)
- wp-gpios: gpio for write protection (see mmc.txt)
Example:
mmc0: mmc@5a000000 {
compatible = "samsung,s3c2440-sdi";
pinctrl-names = "default";
pinctrl-0 = <&sdi_pins>;
reg = <0x5a000000 0x100000>;
interrupts = <0 0 21 3>;
clocks = <&clocks PCLK_SDI>;
clock-names = "sdi";
bus-width = <4>;
cd-gpios = <&gpg 8 GPIO_ACTIVE_LOW>;
wp-gpios = <&gph 8 GPIO_ACTIVE_LOW>;
};

48
Documentation/devicetree/bindings/mmc/sdhci-cadence.txt
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@ -19,6 +19,53 @@ if supported. See mmc.txt for details.
- mmc-hs400-1_8v
- mmc-hs400-1_2v
Some PHY delays can be configured by following properties.
PHY DLL input delays:
They are used to delay the data valid window, and align the window
to sampling clock. The delay starts from 5ns (for delay parameter equal to 0)
and it is increased by 2.5ns in each step.
- cdns,phy-input-delay-sd-highspeed:
Value of the delay in the input path for SD high-speed timing
Valid range = [0:0x1F].
- cdns,phy-input-delay-legacy:
Value of the delay in the input path for legacy timing
Valid range = [0:0x1F].
- cdns,phy-input-delay-sd-uhs-sdr12:
Value of the delay in the input path for SD UHS SDR12 timing
Valid range = [0:0x1F].
- cdns,phy-input-delay-sd-uhs-sdr25:
Value of the delay in the input path for SD UHS SDR25 timing
Valid range = [0:0x1F].
- cdns,phy-input-delay-sd-uhs-sdr50:
Value of the delay in the input path for SD UHS SDR50 timing
Valid range = [0:0x1F].
- cdns,phy-input-delay-sd-uhs-ddr50:
Value of the delay in the input path for SD UHS DDR50 timing
Valid range = [0:0x1F].
- cdns,phy-input-delay-mmc-highspeed:
Value of the delay in the input path for MMC high-speed timing
Valid range = [0:0x1F].
- cdns,phy-input-delay-mmc-ddr:
Value of the delay in the input path for eMMC high-speed DDR timing
Valid range = [0:0x1F].
PHY DLL clock delays:
Each delay property represents the fraction of the clock period.
The approximate delay value will be
(<delay property value>/128)*sdmclk_clock_period.
- cdns,phy-dll-delay-sdclk:
Value of the delay introduced on the sdclk output
for all modes except HS200, HS400 and HS400_ES.
Valid range = [0:0x7F].
- cdns,phy-dll-delay-sdclk-hsmmc:
Value of the delay introduced on the sdclk output
for HS200, HS400 and HS400_ES speed modes.
Valid range = [0:0x7F].
- cdns,phy-dll-delay-strobe:
Value of the delay introduced on the dat_strobe input
used in HS400 / HS400_ES speed modes.
Valid range = [0:0x7F].
Example:
emmc: sdhci@5a000000 {
compatible = "socionext,uniphier-sd4hc", "cdns,sd4hc";
@ -29,4 +76,5 @@ Example:
mmc-ddr-1_8v;
mmc-hs200-1_8v;
mmc-hs400-1_8v;
cdns,phy-dll-delay-sdclk = <0>;
};

1
Documentation/mmc/mmc-dev-attrs.txt
View file

@ -30,6 +30,7 @@ All attributes are read-only.
rel_sectors Reliable write sector count
ocr Operation Conditions Register
dsr Driver Stage Register
cmdq_en Command Queue enabled: 1 => enabled, 0 => not enabled
Note on Erase Size and Preferred Erase Size:

15
MAINTAINERS
View file

@ -3064,6 +3064,14 @@ S: Supported
F: drivers/i2c/busses/i2c-octeon*
F: drivers/i2c/busses/i2c-thunderx*
CAVIUM MMC DRIVER
M: Jan Glauber <jglauber@cavium.com>
M: David Daney <david.daney@cavium.com>
M: Steven J. Hill <Steven.Hill@cavium.com>
W: http://www.cavium.com
S: Supported
F: drivers/mmc/host/cavium*
CAVIUM LIQUIDIO NETWORK DRIVER
M: Derek Chickles <derek.chickles@caviumnetworks.com>
M: Satanand Burla <satananda.burla@caviumnetworks.com>
@ -7919,6 +7927,13 @@ M: Nicolas Pitre <nico@fluxnic.net>
S: Odd Fixes
F: drivers/mmc/host/mvsdio.*
MARVELL XENON MMC/SD/SDIO HOST CONTROLLER DRIVER
M: Hu Ziji <huziji@marvell.com>
L: linux-mmc@vger.kernel.org
S: Supported
F: drivers/mmc/host/sdhci-xenon*
F: Documentation/devicetree/bindings/mmc/marvell,xenon-sdhci.txt
MATROX FRAMEBUFFER DRIVER
L: linux-fbdev@vger.kernel.org
S: Orphan

3
arch/arm64/boot/dts/marvell/armada-ap806.dtsi
View file

@ -235,7 +235,8 @@
#clock-cells = <1>;
clock-output-names = "ap-cpu-cluster-0",
"ap-cpu-cluster-1",
"ap-fixed", "ap-mss";
"ap-fixed", "ap-mss",
"ap-emmc";
reg = <0x6f4000 0x1000>;
};
};

5
arch/mips/configs/cavium_octeon_defconfig
View file

@ -127,6 +127,11 @@ CONFIG_USB_EHCI_HCD=m
CONFIG_USB_EHCI_HCD_PLATFORM=m
CONFIG_USB_OHCI_HCD=m
CONFIG_USB_OHCI_HCD_PLATFORM=m
CONFIG_MMC=y
# CONFIG_PWRSEQ_EMMC is not set
# CONFIG_PWRSEQ_SIMPLE is not set
# CONFIG_MMC_BLOCK_BOUNCE is not set
CONFIG_MMC_CAVIUM_OCTEON=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_DS1307=y
CONFIG_STAGING=y

21
drivers/clk/mvebu/ap806-system-controller.c
View file

@ -23,7 +23,7 @@
#define AP806_SAR_REG 0x400
#define AP806_SAR_CLKFREQ_MODE_MASK 0x1f
#define AP806_CLK_NUM 4
#define AP806_CLK_NUM 5
static struct clk *ap806_clks[AP806_CLK_NUM];
@ -135,6 +135,23 @@ static int ap806_syscon_clk_probe(struct platform_device *pdev)
goto fail3;
}
/* eMMC Clock is fixed clock divided by 3 */
if (of_property_read_string_index(np, "clock-output-names",
4, &name)) {
ap806_clk_data.clk_num--;
dev_warn(&pdev->dev,
"eMMC clock missing: update the device tree!\n");
} else {
ap806_clks[4] = clk_register_fixed_factor(NULL, name,
fixedclk_name,
0, 1, 3);
if (IS_ERR(ap806_clks[4])) {
ret = PTR_ERR(ap806_clks[4]);
goto fail4;
}
}
of_clk_add_provider(np, of_clk_src_onecell_get, &ap806_clk_data);
ret = of_clk_add_provider(np, of_clk_src_onecell_get, &ap806_clk_data);
if (ret)
goto fail_clk_add;
@ -142,6 +159,8 @@ static int ap806_syscon_clk_probe(struct platform_device *pdev)
return 0;
fail_clk_add:
clk_unregister_fixed_factor(ap806_clks[4]);
fail4:
clk_unregister_fixed_factor(ap806_clks[3]);
fail3:
clk_unregister_fixed_rate(ap806_clks[2]);

300
drivers/mmc/core/block.c
View file

@ -129,6 +129,13 @@ static inline int mmc_blk_part_switch(struct mmc_card *card,
struct mmc_blk_data *md);
static int get_card_status(struct mmc_card *card, u32 *status, int retries);
static void mmc_blk_requeue(struct request_queue *q, struct request *req)
{
spin_lock_irq(q->queue_lock);
blk_requeue_request(q, req);
spin_unlock_irq(q->queue_lock);
}
static struct mmc_blk_data *mmc_blk_get(struct gendisk *disk)
{
struct mmc_blk_data *md;
@ -721,10 +728,41 @@ static const struct block_device_operations mmc_bdops = {
#endif
};
static int mmc_blk_part_switch_pre(struct mmc_card *card,
unsigned int part_type)
{
int ret = 0;
if (part_type == EXT_CSD_PART_CONFIG_ACC_RPMB) {
if (card->ext_csd.cmdq_en) {
ret = mmc_cmdq_disable(card);
if (ret)
return ret;
}
mmc_retune_pause(card->host);
}
return ret;
}
static int mmc_blk_part_switch_post(struct mmc_card *card,
unsigned int part_type)
{
int ret = 0;
if (part_type == EXT_CSD_PART_CONFIG_ACC_RPMB) {
mmc_retune_unpause(card->host);
if (card->reenable_cmdq && !card->ext_csd.cmdq_en)
ret = mmc_cmdq_enable(card);
}
return ret;
}
static inline int mmc_blk_part_switch(struct mmc_card *card,
struct mmc_blk_data *md)
{
int ret;
int ret = 0;
struct mmc_blk_data *main_md = dev_get_drvdata(&card->dev);
if (main_md->part_curr == md->part_type)
@ -733,8 +771,9 @@ static inline int mmc_blk_part_switch(struct mmc_card *card,
if (mmc_card_mmc(card)) {
u8 part_config = card->ext_csd.part_config;
if (md->part_type == EXT_CSD_PART_CONFIG_ACC_RPMB)
mmc_retune_pause(card->host);
ret = mmc_blk_part_switch_pre(card, md->part_type);
if (ret)
return ret;
part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK;
part_config |= md->part_type;
@ -743,19 +782,17 @@ static inline int mmc_blk_part_switch(struct mmc_card *card,
EXT_CSD_PART_CONFIG, part_config,
card->ext_csd.part_time);
if (ret) {
if (md->part_type == EXT_CSD_PART_CONFIG_ACC_RPMB)
mmc_retune_unpause(card->host);
mmc_blk_part_switch_post(card, md->part_type);
return ret;
}
card->ext_csd.part_config = part_config;
if (main_md->part_curr == EXT_CSD_PART_CONFIG_ACC_RPMB)
mmc_retune_unpause(card->host);
ret = mmc_blk_part_switch_post(card, main_md->part_curr);
}
main_md->part_curr = md->part_type;
return 0;
return ret;
}
static int mmc_sd_num_wr_blocks(struct mmc_card *card, u32 *written_blocks)
@ -1272,7 +1309,7 @@ static inline void mmc_apply_rel_rw(struct mmc_blk_request *brq,
{
if (!(card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN)) {
/* Legacy mode imposes restrictions on transfers. */
if (!IS_ALIGNED(brq->cmd.arg, card->ext_csd.rel_sectors))
if (!IS_ALIGNED(blk_rq_pos(req), card->ext_csd.rel_sectors))
brq->data.blocks = 1;
if (brq->data.blocks > card->ext_csd.rel_sectors)
@ -1396,36 +1433,39 @@ static enum mmc_blk_status mmc_blk_err_check(struct mmc_card *card,
return MMC_BLK_SUCCESS;
}
static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
struct mmc_card *card,
int disable_multi,
struct mmc_queue *mq)
static void mmc_blk_data_prep(struct mmc_queue *mq, struct mmc_queue_req *mqrq,
int disable_multi, bool *do_rel_wr,
bool *do_data_tag)
{
u32 readcmd, writecmd;
struct mmc_blk_data *md = mq->blkdata;
struct mmc_card *card = md->queue.card;
struct mmc_blk_request *brq = &mqrq->brq;
struct request *req = mqrq->req;
struct mmc_blk_data *md = mq->blkdata;
bool do_data_tag;
/*
* Reliable writes are used to implement Forced Unit Access and
* are supported only on MMCs.
*/
bool do_rel_wr = (req->cmd_flags & REQ_FUA) &&
(rq_data_dir(req) == WRITE) &&
(md->flags & MMC_BLK_REL_WR);
*do_rel_wr = (req->cmd_flags & REQ_FUA) &&
rq_data_dir(req) == WRITE &&
(md->flags & MMC_BLK_REL_WR);
memset(brq, 0, sizeof(struct mmc_blk_request));
brq->mrq.cmd = &brq->cmd;
brq->mrq.data = &brq->data;
brq->cmd.arg = blk_rq_pos(req);
if (!mmc_card_blockaddr(card))
brq->cmd.arg <<= 9;
brq->cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
brq->data.blksz = 512;
brq->stop.opcode = MMC_STOP_TRANSMISSION;
brq->stop.arg = 0;
if (rq_data_dir(req) == READ) {
brq->data.flags = MMC_DATA_READ;
brq->stop.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
} else {
brq->data.flags = MMC_DATA_WRITE;
brq->stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC;
}
brq->data.blksz = 512;
brq->data.blocks = blk_rq_sectors(req);
/*
@ -1456,6 +1496,68 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
brq->data.blocks);
}
if (*do_rel_wr)
mmc_apply_rel_rw(brq, card, req);
/*
* Data tag is used only during writing meta data to speed
* up write and any subsequent read of this meta data
*/
*do_data_tag = card->ext_csd.data_tag_unit_size &&
(req->cmd_flags & REQ_META) &&
(rq_data_dir(req) == WRITE) &&
((brq->data.blocks * brq->data.blksz) >=
card->ext_csd.data_tag_unit_size);
mmc_set_data_timeout(&brq->data, card);
brq->data.sg = mqrq->sg;
brq->data.sg_len = mmc_queue_map_sg(mq, mqrq);
/*
* Adjust the sg list so it is the same size as the
* request.
*/
if (brq->data.blocks != blk_rq_sectors(req)) {
int i, data_size = brq->data.blocks << 9;
struct scatterlist *sg;
for_each_sg(brq->data.sg, sg, brq->data.sg_len, i) {
data_size -= sg->length;
if (data_size <= 0) {
sg->length += data_size;
i++;
break;
}
}
brq->data.sg_len = i;
}
mqrq->areq.mrq = &brq->mrq;
mmc_queue_bounce_pre(mqrq);
}
static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
struct mmc_card *card,
int disable_multi,
struct mmc_queue *mq)
{
u32 readcmd, writecmd;
struct mmc_blk_request *brq = &mqrq->brq;
struct request *req = mqrq->req;
struct mmc_blk_data *md = mq->blkdata;
bool do_rel_wr, do_data_tag;
mmc_blk_data_prep(mq, mqrq, disable_multi, &do_rel_wr, &do_data_tag);
brq->mrq.cmd = &brq->cmd;
brq->cmd.arg = blk_rq_pos(req);
if (!mmc_card_blockaddr(card))
brq->cmd.arg <<= 9;
brq->cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
if (brq->data.blocks > 1 || do_rel_wr) {
/* SPI multiblock writes terminate using a special
* token, not a STOP_TRANSMISSION request.
@ -1470,32 +1572,7 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
readcmd = MMC_READ_SINGLE_BLOCK;
writecmd = MMC_WRITE_BLOCK;
}
if (rq_data_dir(req) == READ) {
brq->cmd.opcode = readcmd;
brq->data.flags = MMC_DATA_READ;
if (brq->mrq.stop)
brq->stop.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 |
MMC_CMD_AC;
} else {
brq->cmd.opcode = writecmd;
brq->data.flags = MMC_DATA_WRITE;
if (brq->mrq.stop)
brq->stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B |
MMC_CMD_AC;
}
if (do_rel_wr)
mmc_apply_rel_rw(brq, card, req);
/*
* Data tag is used only during writing meta data to speed
* up write and any subsequent read of this meta data
*/
do_data_tag = (card->ext_csd.data_tag_unit_size) &&
(req->cmd_flags & REQ_META) &&
(rq_data_dir(req) == WRITE) &&
((brq->data.blocks * brq->data.blksz) >=
card->ext_csd.data_tag_unit_size);
brq->cmd.opcode = rq_data_dir(req) == READ ? readcmd : writecmd;
/*
* Pre-defined multi-block transfers are preferable to
@ -1526,34 +1603,7 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
brq->mrq.sbc = &brq->sbc;
}
mmc_set_data_timeout(&brq->data, card);
brq->data.sg = mqrq->sg;
brq->data.sg_len = mmc_queue_map_sg(mq, mqrq);
/*
* Adjust the sg list so it is the same size as the
* request.
*/
if (brq->data.blocks != blk_rq_sectors(req)) {
int i, data_size = brq->data.blocks << 9;
struct scatterlist *sg;
for_each_sg(brq->data.sg, sg, brq->data.sg_len, i) {
data_size -= sg->length;
if (data_size <= 0) {
sg->length += data_size;
i++;
break;
}
}
brq->data.sg_len = i;
}
mqrq->areq.mrq = &brq->mrq;
mqrq->areq.err_check = mmc_blk_err_check;
mmc_queue_bounce_pre(mqrq);
}
static bool mmc_blk_rw_cmd_err(struct mmc_blk_data *md, struct mmc_card *card,
@ -1585,11 +1635,14 @@ static bool mmc_blk_rw_cmd_err(struct mmc_blk_data *md, struct mmc_card *card,
return req_pending;
}
static void mmc_blk_rw_cmd_abort(struct mmc_card *card, struct request *req)
static void mmc_blk_rw_cmd_abort(struct mmc_queue *mq, struct mmc_card *card,
struct request *req,
struct mmc_queue_req *mqrq)
{
if (mmc_card_removed(card))
req->rq_flags |= RQF_QUIET;
while (blk_end_request(req, -EIO, blk_rq_cur_bytes(req)));
mmc_queue_req_free(mq, mqrq);
}
/**
@ -1597,7 +1650,8 @@ static void mmc_blk_rw_cmd_abort(struct mmc_card *card, struct request *req)
* @mq: the queue with the card and host to restart
* @req: a new request that want to be started after the current one
*/
static void mmc_blk_rw_try_restart(struct mmc_queue *mq, struct request *req)
static void mmc_blk_rw_try_restart(struct mmc_queue *mq, struct request *req,
struct mmc_queue_req *mqrq)
{
if (!req)
return;
@ -1608,11 +1662,12 @@ static void mmc_blk_rw_try_restart(struct mmc_queue *mq, struct request *req)
if (mmc_card_removed(mq->card)) {
req->rq_flags |= RQF_QUIET;
blk_end_request_all(req, -EIO);
mmc_queue_req_free(mq, mqrq);
return;
}
/* Else proceed and try to restart the current async request */
mmc_blk_rw_rq_prep(mq->mqrq_cur, mq->card, 0, mq);
mmc_start_areq(mq->card->host, &mq->mqrq_cur->areq, NULL);
mmc_blk_rw_rq_prep(mqrq, mq->card, 0, mq);
mmc_start_areq(mq->card->host, &mqrq->areq, NULL);
}
static void mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *new_req)
@ -1622,13 +1677,23 @@ static void mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *new_req)
struct mmc_blk_request *brq;
int disable_multi = 0, retry = 0, type, retune_retry_done = 0;
enum mmc_blk_status status;
struct mmc_queue_req *mqrq_cur = NULL;
struct mmc_queue_req *mq_rq;
struct request *old_req;
struct mmc_async_req *new_areq;
struct mmc_async_req *old_areq;
bool req_pending = true;
if (!new_req && !mq->mqrq_prev->req)
if (new_req) {
mqrq_cur = mmc_queue_req_find(mq, new_req);
if (!mqrq_cur) {
WARN_ON(1);
mmc_blk_requeue(mq->queue, new_req);
new_req = NULL;
}
}
if (!mq->qcnt)
return;
do {
@ -1641,12 +1706,12 @@ static void mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *new_req)
!IS_ALIGNED(blk_rq_sectors(new_req), 8)) {
pr_err("%s: Transfer size is not 4KB sector size aligned\n",
new_req->rq_disk->disk_name);
mmc_blk_rw_cmd_abort(card, new_req);
mmc_blk_rw_cmd_abort(mq, card, new_req, mqrq_cur);
return;
}
mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq);
new_areq = &mq->mqrq_cur->areq;
mmc_blk_rw_rq_prep(mqrq_cur, card, 0, mq);
new_areq = &mqrq_cur->areq;
} else
new_areq = NULL;
@ -1657,8 +1722,6 @@ static void mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *new_req)
* and there is nothing more to do until it is
* complete.
*/
if (status == MMC_BLK_NEW_REQUEST)
mq->new_request = true;
return;
}
@ -1691,7 +1754,7 @@ static void mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *new_req)
pr_err("%s BUG rq_tot %d d_xfer %d\n",
__func__, blk_rq_bytes(old_req),
brq->data.bytes_xfered);
mmc_blk_rw_cmd_abort(card, old_req);
mmc_blk_rw_cmd_abort(mq, card, old_req, mq_rq);
return;
}
break;
@ -1699,12 +1762,15 @@ static void mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *new_req)
req_pending = mmc_blk_rw_cmd_err(md, card, brq, old_req, req_pending);
if (mmc_blk_reset(md, card->host, type)) {
if (req_pending)
mmc_blk_rw_cmd_abort(card, old_req);
mmc_blk_rw_try_restart(mq, new_req);
mmc_blk_rw_cmd_abort(mq, card, old_req, mq_rq);
else
mmc_queue_req_free(mq, mq_rq);
mmc_blk_rw_try_restart(mq, new_req, mqrq_cur);
return;
}
if (!req_pending) {
mmc_blk_rw_try_restart(mq, new_req);
mmc_queue_req_free(mq, mq_rq);
mmc_blk_rw_try_restart(mq, new_req, mqrq_cur);
return;
}
break;
@ -1716,8 +1782,8 @@ static void mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *new_req)
case MMC_BLK_ABORT:
if (!mmc_blk_reset(md, card->host, type))
break;
mmc_blk_rw_cmd_abort(card, old_req);
mmc_blk_rw_try_restart(mq, new_req);
mmc_blk_rw_cmd_abort(mq, card, old_req, mq_rq);
mmc_blk_rw_try_restart(mq, new_req, mqrq_cur);
return;
case MMC_BLK_DATA_ERR: {
int err;
@ -1726,8 +1792,8 @@ static void mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *new_req)
if (!err)
break;
if (err == -ENODEV) {
mmc_blk_rw_cmd_abort(card, old_req);
mmc_blk_rw_try_restart(mq, new_req);
mmc_blk_rw_cmd_abort(mq, card, old_req, mq_rq);
mmc_blk_rw_try_restart(mq, new_req, mqrq_cur);
return;
}
/* Fall through */
@ -1748,19 +1814,20 @@ static void mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *new_req)
req_pending = blk_end_request(old_req, -EIO,
brq->data.blksz);
if (!req_pending) {
mmc_blk_rw_try_restart(mq, new_req);
mmc_queue_req_free(mq, mq_rq);
mmc_blk_rw_try_restart(mq, new_req, mqrq_cur);
return;
}
break;
case MMC_BLK_NOMEDIUM:
mmc_blk_rw_cmd_abort(card, old_req);
mmc_blk_rw_try_restart(mq, new_req);
mmc_blk_rw_cmd_abort(mq, card, old_req, mq_rq);
mmc_blk_rw_try_restart(mq, new_req, mqrq_cur);
return;
default:
pr_err("%s: Unhandled return value (%d)",
old_req->rq_disk->disk_name, status);
mmc_blk_rw_cmd_abort(card, old_req);
mmc_blk_rw_try_restart(mq, new_req);
mmc_blk_rw_cmd_abort(mq, card, old_req, mq_rq);
mmc_blk_rw_try_restart(mq, new_req, mqrq_cur);
return;
}
@ -1776,6 +1843,8 @@ static void mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *new_req)
mq_rq->brq.retune_retry_done = retune_retry_done;
}
} while (req_pending);
mmc_queue_req_free(mq, mq_rq);
}
void mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
@ -1783,9 +1852,8 @@ void mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
int ret;
struct mmc_blk_data *md = mq->blkdata;
struct mmc_card *card = md->queue.card;
bool req_is_special = mmc_req_is_special(req);
if (req && !mq->mqrq_prev->req)
if (req && !mq->qcnt)
/* claim host only for the first request */
mmc_get_card(card);
@ -1797,20 +1865,19 @@ void mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
goto out;
}
mq->new_request = false;
if (req && req_op(req) == REQ_OP_DISCARD) {
/* complete ongoing async transfer before issuing discard */
if (card->host->areq)
if (mq->qcnt)
mmc_blk_issue_rw_rq(mq, NULL);
mmc_blk_issue_discard_rq(mq, req);
} else if (req && req_op(req) == REQ_OP_SECURE_ERASE) {
/* complete ongoing async transfer before issuing secure erase*/
if (card->host->areq)
if (mq->qcnt)
mmc_blk_issue_rw_rq(mq, NULL);
mmc_blk_issue_secdiscard_rq(mq, req);
} else if (req && req_op(req) == REQ_OP_FLUSH) {
/* complete ongoing async transfer before issuing flush */
if (card->host->areq)
if (mq->qcnt)
mmc_blk_issue_rw_rq(mq, NULL);
mmc_blk_issue_flush(mq, req);
} else {
@ -1819,13 +1886,7 @@ void mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
}
out:
if ((!req && !mq->new_request) || req_is_special)
/*
* Release host when there are no more requests
* and after special request(discard, flush) is done.
* In case sepecial request, there is no reentry to
* the 'mmc_blk_issue_rq' with 'mqrq_prev->req'.
*/
if (!mq->qcnt)
mmc_put_card(card);
}
@ -2105,6 +2166,7 @@ static int mmc_blk_probe(struct mmc_card *card)
{
struct mmc_blk_data *md, *part_md;
char cap_str[10];
int ret;
/*
* Check that the card supports the command class(es) we need.
@ -2114,9 +2176,15 @@ static int mmc_blk_probe(struct mmc_card *card)
mmc_fixup_device(card, mmc_blk_fixups);
ret = mmc_queue_alloc_shared_queue(card);
if (ret)
return ret;
md = mmc_blk_alloc(card);
if (IS_ERR(md))
if (IS_ERR(md)) {
mmc_queue_free_shared_queue(card);
return PTR_ERR(md);
}
string_get_size((u64)get_capacity(md->disk), 512, STRING_UNITS_2,
cap_str, sizeof(cap_str));
@ -2154,6 +2222,7 @@ static int mmc_blk_probe(struct mmc_card *card)
out:
mmc_blk_remove_parts(card, md);
mmc_blk_remove_req(md);
mmc_queue_free_shared_queue(card);
return 0;
}
@ -2171,6 +2240,7 @@ static void mmc_blk_remove(struct mmc_card *card)
pm_runtime_put_noidle(&card->dev);
mmc_blk_remove_req(md);
dev_set_drvdata(&card->dev, NULL);
mmc_queue_free_shared_queue(card);
}
static int _mmc_blk_suspend(struct mmc_card *card)

193
drivers/mmc/core/core.c
View file

@ -172,14 +172,16 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
trace_mmc_request_done(host, mrq);
if (err && cmd->retries && !mmc_card_removed(host->card)) {
/*
* Request starter must handle retries - see
* mmc_wait_for_req_done().
*/
if (mrq->done)
mrq->done(mrq);
} else {
/*
* We list various conditions for the command to be considered
* properly done:
*
* - There was no error, OK fine then
* - We are not doing some kind of retry
* - The card was removed (...so just complete everything no matter
* if there are errors or retries)
*/
if (!err || !cmd->retries || mmc_card_removed(host->card)) {
mmc_should_fail_request(host, mrq);
if (!host->ongoing_mrq)
@ -211,10 +213,13 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
mrq->stop->resp[0], mrq->stop->resp[1],
mrq->stop->resp[2], mrq->stop->resp[3]);
}
if (mrq->done)
mrq->done(mrq);
}
/*
* Request starter must handle retries - see
* mmc_wait_for_req_done().
*/
if (mrq->done)
mrq->done(mrq);
}
EXPORT_SYMBOL(mmc_request_done);
@ -234,8 +239,10 @@ static void __mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
/*
* For sdio rw commands we must wait for card busy otherwise some
* sdio devices won't work properly.
* And bypass I/O abort, reset and bus suspend operations.
*/
if (mmc_is_io_op(mrq->cmd->opcode) && host->ops->card_busy) {
if (sdio_is_io_busy(mrq->cmd->opcode, mrq->cmd->arg) &&
host->ops->card_busy) {
int tries = 500; /* Wait aprox 500ms at maximum */
while (host->ops->card_busy(host) && --tries)
@ -262,26 +269,19 @@ static void __mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
host->ops->request(host, mrq);
}
static int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
static void mmc_mrq_pr_debug(struct mmc_host *host, struct mmc_request *mrq)
{
#ifdef CONFIG_MMC_DEBUG
unsigned int i, sz;
struct scatterlist *sg;
#endif
mmc_retune_hold(host);
if (mmc_card_removed(host->card))
return -ENOMEDIUM;
if (mrq->sbc) {
pr_debug("<%s: starting CMD%u arg %08x flags %08x>\n",
mmc_hostname(host), mrq->sbc->opcode,
mrq->sbc->arg, mrq->sbc->flags);
}
pr_debug("%s: starting CMD%u arg %08x flags %08x\n",
mmc_hostname(host), mrq->cmd->opcode,
mrq->cmd->arg, mrq->cmd->flags);
if (mrq->cmd) {
pr_debug("%s: starting CMD%u arg %08x flags %08x\n",
mmc_hostname(host), mrq->cmd->opcode, mrq->cmd->arg,
mrq->cmd->flags);
}
if (mrq->data) {
pr_debug("%s: blksz %d blocks %d flags %08x "
@ -297,11 +297,20 @@ static int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
mmc_hostname(host), mrq->stop->opcode,
mrq->stop->arg, mrq->stop->flags);
}
}
WARN_ON(!host->claimed);
static int mmc_mrq_prep(struct mmc_host *host, struct mmc_request *mrq)
{
#ifdef CONFIG_MMC_DEBUG
unsigned int i, sz;
struct scatterlist *sg;
#endif
mrq->cmd->error = 0;
mrq->cmd->mrq = mrq;
if (mrq->cmd) {
mrq->cmd->error = 0;
mrq->cmd->mrq = mrq;
mrq->cmd->data = mrq->data;
}
if (mrq->sbc) {
mrq->sbc->error = 0;
mrq->sbc->mrq = mrq;
@ -318,8 +327,6 @@ static int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
if (sz != mrq->data->blocks * mrq->data->blksz)
return -EINVAL;
#endif
mrq->cmd->data = mrq->data;
mrq->data->error = 0;
mrq->data->mrq = mrq;
if (mrq->stop) {
@ -328,6 +335,27 @@ static int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
mrq->stop->mrq = mrq;
}
}
return 0;
}
static int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
{
int err;
mmc_retune_hold(host);
if (mmc_card_removed(host->card))
return -ENOMEDIUM;
mmc_mrq_pr_debug(host, mrq);
WARN_ON(!host->claimed);
err = mmc_mrq_prep(host, mrq);
if (err)
return err;
led_trigger_event(host->led, LED_FULL);
__mmc_start_request(host, mrq);
@ -485,56 +513,6 @@ static int __mmc_start_req(struct mmc_host *host, struct mmc_request *mrq)
return err;
}
/*
* mmc_wait_for_data_req_done() - wait for request completed
* @host: MMC host to prepare the command.
* @mrq: MMC request to wait for
*
* Blocks MMC context till host controller will ack end of data request
* execution or new request notification arrives from the block layer.
* Handles command retries.
*
* Returns enum mmc_blk_status after checking errors.
*/
static enum mmc_blk_status mmc_wait_for_data_req_done(struct mmc_host *host,
struct mmc_request *mrq)
{
struct mmc_command *cmd;
struct mmc_context_info *context_info = &host->context_info;
enum mmc_blk_status status;
while (1) {
wait_event_interruptible(context_info->wait,
(context_info->is_done_rcv ||
context_info->is_new_req));
if (context_info->is_done_rcv) {
context_info->is_done_rcv = false;
cmd = mrq->cmd;
if (!cmd->error || !cmd->retries ||
mmc_card_removed(host->card)) {
status = host->areq->err_check(host->card,
host->areq);
break; /* return status */
} else {
mmc_retune_recheck(host);
pr_info("%s: req failed (CMD%u): %d, retrying...\n",
mmc_hostname(host),
cmd->opcode, cmd->error);
cmd->retries--;
cmd->error = 0;
__mmc_start_request(host, mrq);
continue; /* wait for done/new event again */
}
}
return MMC_BLK_NEW_REQUEST;
}
mmc_retune_release(host);
return status;
}
void mmc_wait_for_req_done(struct mmc_host *host, struct mmc_request *mrq)
{
struct mmc_command *cmd;
@ -639,14 +617,44 @@ static void mmc_post_req(struct mmc_host *host, struct mmc_request *mrq,
*/
static enum mmc_blk_status mmc_finalize_areq(struct mmc_host *host)
{
struct mmc_context_info *context_info = &host->context_info;
enum mmc_blk_status status;
if (!host->areq)
return MMC_BLK_SUCCESS;
status = mmc_wait_for_data_req_done(host, host->areq->mrq);
if (status == MMC_BLK_NEW_REQUEST)
return status;
while (1) {
wait_event_interruptible(context_info->wait,
(context_info->is_done_rcv ||
context_info->is_new_req));
if (context_info->is_done_rcv) {
struct mmc_command *cmd;
context_info->is_done_rcv = false;
cmd = host->areq->mrq->cmd;
if (!cmd->error || !cmd->retries ||
mmc_card_removed(host->card)) {
status = host->areq->err_check(host->card,
host->areq);
break; /* return status */
} else {
mmc_retune_recheck(host);
pr_info("%s: req failed (CMD%u): %d, retrying...\n",
mmc_hostname(host),
cmd->opcode, cmd->error);
cmd->retries--;
cmd->error = 0;
__mmc_start_request(host, host->areq->mrq);
continue; /* wait for done/new event again */
}
}
return MMC_BLK_NEW_REQUEST;
}
mmc_retune_release(host);
/*
* Check BKOPS urgency for each R1 response
@ -683,7 +691,7 @@ struct mmc_async_req *mmc_start_areq(struct mmc_host *host,
{
enum mmc_blk_status status;
int start_err = 0;
struct mmc_async_req *data = host->areq;
struct mmc_async_req *previous = host->areq;
/* Prepare a new request */
if (areq)
@ -691,13 +699,12 @@ struct mmc_async_req *mmc_start_areq(struct mmc_host *host,
/* Finalize previous request */
status = mmc_finalize_areq(host);
if (ret_stat)
*ret_stat = status;
/* The previous request is still going on... */
if (status == MMC_BLK_NEW_REQUEST) {
if (ret_stat)
*ret_stat = status;
if (status == MMC_BLK_NEW_REQUEST)
return NULL;
}
/* Fine so far, start the new request! */
if (status == MMC_BLK_SUCCESS && areq)
@ -716,9 +723,7 @@ struct mmc_async_req *mmc_start_areq(struct mmc_host *host,
else
host->areq = areq;
if (ret_stat)
*ret_stat = status;
return data;
return previous;
}
EXPORT_SYMBOL(mmc_start_areq);
@ -2555,6 +2560,12 @@ unsigned int mmc_calc_max_discard(struct mmc_card *card)
}
EXPORT_SYMBOL(mmc_calc_max_discard);
bool mmc_card_is_blockaddr(struct mmc_card *card)
{
return card ? mmc_card_blockaddr(card) : false;
}
EXPORT_SYMBOL(mmc_card_is_blockaddr);
int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen)
{
struct mmc_command cmd = {};

9
drivers/mmc/core/mmc.c
View file

@ -790,6 +790,7 @@ MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size);
MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult);
MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors);
MMC_DEV_ATTR(ocr, "%08x\n", card->ocr);
MMC_DEV_ATTR(cmdq_en, "%d\n", card->ext_csd.cmdq_en);
static ssize_t mmc_fwrev_show(struct device *dev,
struct device_attribute *attr,
@ -845,6 +846,7 @@ static struct attribute *mmc_std_attrs[] = {
&dev_attr_rel_sectors.attr,
&dev_attr_ocr.attr,
&dev_attr_dsr.attr,
&dev_attr_cmdq_en.attr,
NULL,
};
ATTRIBUTE_GROUPS(mmc_std);
@ -1787,6 +1789,13 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
}
}
/*
* In some cases (e.g. RPMB or mmc_test), the Command Queue must be
* disabled for a time, so a flag is needed to indicate to re-enable the
* Command Queue.
*/
card->reenable_cmdq = card->ext_csd.cmdq_en;
/*
* The mandatory minimum values are defined for packed command.
* read: 5, write: 3

36
drivers/mmc/core/mmc_ops.c
View file

@ -305,7 +305,7 @@ mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host,
int mmc_send_csd(struct mmc_card *card, u32 *csd)
{
int ret, i;
u32 *csd_tmp;
__be32 *csd_tmp;
if (!mmc_host_is_spi(card->host))
return mmc_send_cxd_native(card->host, card->rca << 16,
@ -319,7 +319,7 @@ int mmc_send_csd(struct mmc_card *card, u32 *csd)
if (ret)
goto err;
for (i = 0;i < 4;i++)
for (i = 0; i < 4; i++)
csd[i] = be32_to_cpu(csd_tmp[i]);
err:
@ -330,7 +330,7 @@ int mmc_send_csd(struct mmc_card *card, u32 *csd)
int mmc_send_cid(struct mmc_host *host, u32 *cid)
{
int ret, i;
u32 *cid_tmp;
__be32 *cid_tmp;
if (!mmc_host_is_spi(host)) {
if (!host->card)
@ -347,7 +347,7 @@ int mmc_send_cid(struct mmc_host *host, u32 *cid)
if (ret)
goto err;
for (i = 0;i < 4;i++)
for (i = 0; i < 4; i++)
cid[i] = be32_to_cpu(cid_tmp[i]);
err:
@ -838,3 +838,31 @@ int mmc_can_ext_csd(struct mmc_card *card)
{
return (card && card->csd.mmca_vsn > CSD_SPEC_VER_3);
}
static int mmc_cmdq_switch(struct mmc_card *card, bool enable)
{
u8 val = enable ? EXT_CSD_CMDQ_MODE_ENABLED : 0;
int err;
if (!card->ext_csd.cmdq_support)
return -EOPNOTSUPP;
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_CMDQ_MODE_EN,
val, card->ext_csd.generic_cmd6_time);
if (!err)
card->ext_csd.cmdq_en = enable;
return err;
}
int mmc_cmdq_enable(struct mmc_card *card)
{
return mmc_cmdq_switch(card, true);
}
EXPORT_SYMBOL_GPL(mmc_cmdq_enable);
int mmc_cmdq_disable(struct mmc_card *card)
{
return mmc_cmdq_switch(card, false);
}
EXPORT_SYMBOL_GPL(mmc_cmdq_disable);

2
drivers/mmc/core/mmc_ops.h
View file

@ -46,6 +46,8 @@ int mmc_read_bkops_status(struct mmc_card *card);
void mmc_start_bkops(struct mmc_card *card, bool from_exception);
int mmc_can_reset(struct mmc_card *card);
int mmc_flush_cache(struct mmc_card *card);
int mmc_cmdq_enable(struct mmc_card *card);
int mmc_cmdq_disable(struct mmc_card *card);
#endif

14
drivers/mmc/core/mmc_test.c
View file

@ -26,6 +26,7 @@
#include "card.h"
#include "host.h"
#include "bus.h"
#include "mmc_ops.h"
#define RESULT_OK 0
#define RESULT_FAIL 1
@ -3264,6 +3265,14 @@ static int mmc_test_probe(struct mmc_card *card)
if (ret)
return ret;
if (card->ext_csd.cmdq_en) {
mmc_claim_host(card->host);
ret = mmc_cmdq_disable(card);
mmc_release_host(card->host);
if (ret)
return ret;
}
dev_info(&card->dev, "Card claimed for testing.\n");
return 0;
@ -3271,6 +3280,11 @@ static int mmc_test_probe(struct mmc_card *card)
static void mmc_test_remove(struct mmc_card *card)
{
if (card->reenable_cmdq) {
mmc_claim_host(card->host);
mmc_cmdq_enable(card);
mmc_release_host(card->host);
}
mmc_test_free_result(card);
mmc_test_free_dbgfs_file(card);
}

337
drivers/mmc/core/queue.c
View file

@ -40,6 +40,35 @@ static int mmc_prep_request(struct request_queue *q, struct request *req)
return BLKPREP_OK;
}
struct mmc_queue_req *mmc_queue_req_find(struct mmc_queue *mq,
struct request *req)
{
struct mmc_queue_req *mqrq;
int i = ffz(mq->qslots);
if (i >= mq->qdepth)
return NULL;
mqrq = &mq->mqrq[i];
WARN_ON(mqrq->req || mq->qcnt >= mq->qdepth ||
test_bit(mqrq->task_id, &mq->qslots));
mqrq->req = req;
mq->qcnt += 1;
__set_bit(mqrq->task_id, &mq->qslots);
return mqrq;
}
void mmc_queue_req_free(struct mmc_queue *mq,
struct mmc_queue_req *mqrq)
{
WARN_ON(!mqrq->req || mq->qcnt < 1 ||
!test_bit(mqrq->task_id, &mq->qslots));
mqrq->req = NULL;
mq->qcnt -= 1;
__clear_bit(mqrq->task_id, &mq->qslots);
}
static int mmc_queue_thread(void *d)
{
struct mmc_queue *mq = d;
@ -50,7 +79,7 @@ static int mmc_queue_thread(void *d)
down(&mq->thread_sem);
do {
struct request *req = NULL;
struct request *req;
spin_lock_irq(q->queue_lock);
set_current_state(TASK_INTERRUPTIBLE);
@ -63,38 +92,17 @@ static int mmc_queue_thread(void *d)
* Dispatch queue is empty so set flags for
* mmc_request_fn() to wake us up.
*/
if (mq->mqrq_prev->req)
if (mq->qcnt)
cntx->is_waiting_last_req = true;
else
mq->asleep = true;
}
mq->mqrq_cur->req = req;
spin_unlock_irq(q->queue_lock);
if (req || mq->mqrq_prev->req) {
bool req_is_special = mmc_req_is_special(req);
if (req || mq->qcnt) {
set_current_state(TASK_RUNNING);
mmc_blk_issue_rq(mq, req);
cond_resched();
if (mq->new_request) {
mq->new_request = false;
continue; /* fetch again */
}
/*
* Current request becomes previous request
* and vice versa.
* In case of special requests, current request
* has been finished. Do not assign it to previous
* request.
*/
if (req_is_special)
mq->mqrq_cur->req = NULL;
mq->mqrq_prev->brq.mrq.data = NULL;
mq->mqrq_prev->req = NULL;
swap(mq->mqrq_prev, mq->mqrq_cur);
} else {
if (kthread_should_stop()) {
set_current_state(TASK_RUNNING);
@ -141,17 +149,13 @@ static void mmc_request_fn(struct request_queue *q)
wake_up_process(mq->thread);
}
static struct scatterlist *mmc_alloc_sg(int sg_len, int *err)
static struct scatterlist *mmc_alloc_sg(int sg_len)
{
struct scatterlist *sg;
sg = kmalloc_array(sg_len, sizeof(*sg), GFP_KERNEL);
if (!sg)
*err = -ENOMEM;
else {
*err = 0;
if (sg)
sg_init_table(sg, sg_len);
}
return sg;
}
@ -175,62 +179,6 @@ static void mmc_queue_setup_discard(struct request_queue *q,
queue_flag_set_unlocked(QUEUE_FLAG_SECERASE, q);
}
#ifdef CONFIG_MMC_BLOCK_BOUNCE
static bool mmc_queue_alloc_bounce_bufs(struct mmc_queue *mq,
unsigned int bouncesz)
{
int i;
for (i = 0; i < mq->qdepth; i++) {
mq->mqrq[i].bounce_buf = kmalloc(bouncesz, GFP_KERNEL);
if (!mq->mqrq[i].bounce_buf)
goto out_err;
}
return true;
out_err:
while (--i >= 0) {
kfree(mq->mqrq[i].bounce_buf);
mq->mqrq[i].bounce_buf = NULL;
}
pr_warn("%s: unable to allocate bounce buffers\n",
mmc_card_name(mq->card));
return false;
}
static int mmc_queue_alloc_bounce_sgs(struct mmc_queue *mq,
unsigned int bouncesz)
{
int i, ret;
for (i = 0; i < mq->qdepth; i++) {
mq->mqrq[i].sg = mmc_alloc_sg(1, &ret);
if (ret)
return ret;
mq->mqrq[i].bounce_sg = mmc_alloc_sg(bouncesz / 512, &ret);
if (ret)
return ret;
}
return 0;
}
#endif
static int mmc_queue_alloc_sgs(struct mmc_queue *mq, int max_segs)
{
int i, ret;
for (i = 0; i < mq->qdepth; i++) {
mq->mqrq[i].sg = mmc_alloc_sg(max_segs, &ret);
if (ret)
return ret;
}
return 0;
}
static void mmc_queue_req_free_bufs(struct mmc_queue_req *mqrq)
{
kfree(mqrq->bounce_sg);
@ -243,12 +191,166 @@ static void mmc_queue_req_free_bufs(struct mmc_queue_req *mqrq)
mqrq->bounce_buf = NULL;
}
static void mmc_queue_reqs_free_bufs(struct mmc_queue *mq)
static void mmc_queue_reqs_free_bufs(struct mmc_queue_req *mqrq, int qdepth)
{
int i;
for (i = 0; i < mq->qdepth; i++)
mmc_queue_req_free_bufs(&mq->mqrq[i]);
for (i = 0; i < qdepth; i++)
mmc_queue_req_free_bufs(&mqrq[i]);
}
static void mmc_queue_free_mqrqs(struct mmc_queue_req *mqrq, int qdepth)
{
mmc_queue_reqs_free_bufs(mqrq, qdepth);
kfree(mqrq);
}
static struct mmc_queue_req *mmc_queue_alloc_mqrqs(int qdepth)
{
struct mmc_queue_req *mqrq;
int i;
mqrq = kcalloc(qdepth, sizeof(*mqrq), GFP_KERNEL);
if (mqrq) {
for (i = 0; i < qdepth; i++)
mqrq[i].task_id = i;
}
return mqrq;
}
#ifdef CONFIG_MMC_BLOCK_BOUNCE
static int mmc_queue_alloc_bounce_bufs(struct mmc_queue_req *mqrq, int qdepth,
unsigned int bouncesz)
{
int i;
for (i = 0; i < qdepth; i++) {
mqrq[i].bounce_buf = kmalloc(bouncesz, GFP_KERNEL);
if (!mqrq[i].bounce_buf)
return -ENOMEM;
mqrq[i].sg = mmc_alloc_sg(1);
if (!mqrq[i].sg)
return -ENOMEM;
mqrq[i].bounce_sg = mmc_alloc_sg(bouncesz / 512);
if (!mqrq[i].bounce_sg)
return -ENOMEM;
}
return 0;
}
static bool mmc_queue_alloc_bounce(struct mmc_queue_req *mqrq, int qdepth,
unsigned int bouncesz)
{
int ret;
ret = mmc_queue_alloc_bounce_bufs(mqrq, qdepth, bouncesz);
if (ret)
mmc_queue_reqs_free_bufs(mqrq, qdepth);
return !ret;
}
static unsigned int mmc_queue_calc_bouncesz(struct mmc_host *host)
{
unsigned int bouncesz = MMC_QUEUE_BOUNCESZ;
if (host->max_segs != 1)
return 0;
if (bouncesz > host->max_req_size)
bouncesz = host->max_req_size;
if (bouncesz > host->max_seg_size)
bouncesz = host->max_seg_size;
if (bouncesz > host->max_blk_count * 512)
bouncesz = host->max_blk_count * 512;
if (bouncesz <= 512)
return 0;
return bouncesz;
}
#else
static inline bool mmc_queue_alloc_bounce(struct mmc_queue_req *mqrq,
int qdepth, unsigned int bouncesz)
{
return false;
}
static unsigned int mmc_queue_calc_bouncesz(struct mmc_host *host)
{
return 0;
}
#endif
static int mmc_queue_alloc_sgs(struct mmc_queue_req *mqrq, int qdepth,
int max_segs)
{
int i;
for (i = 0; i < qdepth; i++) {
mqrq[i].sg = mmc_alloc_sg(max_segs);
if (!mqrq[i].sg)
return -ENOMEM;
}
return 0;
}
void mmc_queue_free_shared_queue(struct mmc_card *card)
{
if (card->mqrq) {
mmc_queue_free_mqrqs(card->mqrq, card->qdepth);
card->mqrq = NULL;
}
}
static int __mmc_queue_alloc_shared_queue(struct mmc_card *card, int qdepth)
{
struct mmc_host *host = card->host;
struct mmc_queue_req *mqrq;
unsigned int bouncesz;
int ret = 0;
if (card->mqrq)
return -EINVAL;
mqrq = mmc_queue_alloc_mqrqs(qdepth);
if (!mqrq)
return -ENOMEM;
card->mqrq = mqrq;
card->qdepth = qdepth;
bouncesz = mmc_queue_calc_bouncesz(host);
if (bouncesz && !mmc_queue_alloc_bounce(mqrq, qdepth, bouncesz)) {
bouncesz = 0;
pr_warn("%s: unable to allocate bounce buffers\n",
mmc_card_name(card));
}
card->bouncesz = bouncesz;
if (!bouncesz) {
ret = mmc_queue_alloc_sgs(mqrq, qdepth, host->max_segs);
if (ret)
goto out_err;
}
return ret;
out_err:
mmc_queue_free_shared_queue(card);
return ret;
}
int mmc_queue_alloc_shared_queue(struct mmc_card *card)
{
return __mmc_queue_alloc_shared_queue(card, 2);
}
/**
@ -265,7 +367,6 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card,
{
struct mmc_host *host = card->host;
u64 limit = BLK_BOUNCE_HIGH;
bool bounce = false;
int ret = -ENOMEM;
if (mmc_dev(host)->dma_mask && *mmc_dev(host)->dma_mask)
@ -276,13 +377,8 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card,
if (!mq->queue)
return -ENOMEM;
mq->qdepth = 2;
mq->mqrq = kcalloc(mq->qdepth, sizeof(struct mmc_queue_req),
GFP_KERNEL);
if (!mq->mqrq)
goto blk_cleanup;
mq->mqrq_cur = &mq->mqrq[0];
mq->mqrq_prev = &mq->mqrq[1];
mq->mqrq = card->mqrq;
mq->qdepth = card->qdepth;
mq->queue->queuedata = mq;
blk_queue_prep_rq(mq->queue, mmc_prep_request);
@ -291,44 +387,17 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card,
if (mmc_can_erase(card))
mmc_queue_setup_discard(mq->queue, card);
#ifdef CONFIG_MMC_BLOCK_BOUNCE
if (host->max_segs == 1) {
unsigned int bouncesz;
bouncesz = MMC_QUEUE_BOUNCESZ;
if (bouncesz > host->max_req_size)
bouncesz = host->max_req_size;
if (bouncesz > host->max_seg_size)
bouncesz = host->max_seg_size;
if (bouncesz > (host->max_blk_count * 512))
bouncesz = host->max_blk_count * 512;
if (bouncesz > 512 &&
mmc_queue_alloc_bounce_bufs(mq, bouncesz)) {
blk_queue_bounce_limit(mq->queue, BLK_BOUNCE_ANY);
blk_queue_max_hw_sectors(mq->queue, bouncesz / 512);
blk_queue_max_segments(mq->queue, bouncesz / 512);
blk_queue_max_segment_size(mq->queue, bouncesz);
ret = mmc_queue_alloc_bounce_sgs(mq, bouncesz);
if (ret)
goto cleanup_queue;
bounce = true;
}
}
#endif
if (!bounce) {
if (card->bouncesz) {
blk_queue_bounce_limit(mq->queue, BLK_BOUNCE_ANY);
blk_queue_max_hw_sectors(mq->queue, card->bouncesz / 512);
blk_queue_max_segments(mq->queue, card->bouncesz / 512);
blk_queue_max_segment_size(mq->queue, card->bouncesz);
} else {
blk_queue_bounce_limit(mq->queue, limit);
blk_queue_max_hw_sectors(mq->queue,
min(host->max_blk_count, host->max_req_size / 512));
blk_queue_max_segments(mq->queue, host->max_segs);
blk_queue_max_segment_size(mq->queue, host->max_seg_size);
ret = mmc_queue_alloc_sgs(mq, host->max_segs);
if (ret)
goto cleanup_queue;
}
sema_init(&mq->thread_sem, 1);
@ -343,11 +412,8 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card,
return 0;
cleanup_queue:
mmc_queue_reqs_free_bufs(mq);
kfree(mq->mqrq);
cleanup_queue:
mq->mqrq = NULL;
blk_cleanup:
blk_cleanup_queue(mq->queue);
return ret;
}
@ -369,10 +435,7 @@ void mmc_cleanup_queue(struct mmc_queue *mq)
blk_start_queue(q);
spin_unlock_irqrestore(q->queue_lock, flags);
mmc_queue_reqs_free_bufs(mq);
kfree(mq->mqrq);
mq->mqrq = NULL;
mq->card = NULL;
}
EXPORT_SYMBOL(mmc_cleanup_queue);

12
drivers/mmc/core/queue.h
View file

@ -34,23 +34,25 @@ struct mmc_queue_req {
struct scatterlist *bounce_sg;
unsigned int bounce_sg_len;
struct mmc_async_req areq;
int task_id;
};
struct mmc_queue {
struct mmc_card *card;
struct task_struct *thread;
struct semaphore thread_sem;
bool new_request;
bool suspended;
bool asleep;
struct mmc_blk_data *blkdata;
struct request_queue *queue;
struct mmc_queue_req *mqrq;
struct mmc_queue_req *mqrq_cur;
struct mmc_queue_req *mqrq_prev;
int qdepth;
int qcnt;
unsigned long qslots;
};
extern int mmc_queue_alloc_shared_queue(struct mmc_card *card);
extern void mmc_queue_free_shared_queue(struct mmc_card *card);
extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *,
const char *);
extern void mmc_cleanup_queue(struct mmc_queue *);
@ -64,4 +66,8 @@ extern void mmc_queue_bounce_post(struct mmc_queue_req *);
extern int mmc_access_rpmb(struct mmc_queue *);
extern struct mmc_queue_req *mmc_queue_req_find(struct mmc_queue *,
struct request *);
extern void mmc_queue_req_free(struct mmc_queue *, struct mmc_queue_req *);
#endif

4
drivers/mmc/core/sd.c
View file

@ -225,7 +225,7 @@ static int mmc_decode_scr(struct mmc_card *card)
static int mmc_read_ssr(struct mmc_card *card)
{
unsigned int au, es, et, eo;
u32 *raw_ssr;
__be32 *raw_ssr;
int i;
if (!(card->csd.cmdclass & CCC_APP_SPEC)) {
@ -853,7 +853,7 @@ int mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card,
/*
* Fetch SCR from card.
*/
err = mmc_app_send_scr(card, card->raw_scr);
err = mmc_app_send_scr(card);
if (err)
return err;

19
drivers/mmc/core/sd_ops.c
View file

@ -232,14 +232,14 @@ int mmc_send_relative_addr(struct mmc_host *host, unsigned int *rca)
return 0;
}
int mmc_app_send_scr(struct mmc_card *card, u32 *scr)
int mmc_app_send_scr(struct mmc_card *card)
{
int err;
struct mmc_request mrq = {};
struct mmc_command cmd = {};
struct mmc_data data = {};
struct scatterlist sg;
void *data_buf;
__be32 *scr;
/* NOTE: caller guarantees scr is heap-allocated */
@ -250,8 +250,8 @@ int mmc_app_send_scr(struct mmc_card *card, u32 *scr)
/* dma onto stack is unsafe/nonportable, but callers to this
* routine normally provide temporary on-stack buffers ...
*/
data_buf = kmalloc(sizeof(card->raw_scr), GFP_KERNEL);
if (data_buf == NULL)
scr = kmalloc(sizeof(card->raw_scr), GFP_KERNEL);
if (!scr)
return -ENOMEM;
mrq.cmd = &cmd;
@ -267,23 +267,22 @@ int mmc_app_send_scr(struct mmc_card *card, u32 *scr)
data.sg = &sg;
data.sg_len = 1;
sg_init_one(&sg, data_buf, 8);
sg_init_one(&sg, scr, 8);
mmc_set_data_timeout(&data, card);
mmc_wait_for_req(card->host, &mrq);
memcpy(scr, data_buf, sizeof(card->raw_scr));
kfree(data_buf);
card->raw_scr[0] = be32_to_cpu(scr[0]);
card->raw_scr[1] = be32_to_cpu(scr[1]);
kfree(scr);
if (cmd.error)
return cmd.error;
if (data.error)
return data.error;
scr[0] = be32_to_cpu(scr[0]);
scr[1] = be32_to_cpu(scr[1]);
return 0;
}

2
drivers/mmc/core/sd_ops.h
View file

@ -22,7 +22,7 @@ int mmc_app_set_bus_width(struct mmc_card *card, int width);
int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr);
int mmc_send_if_cond(struct mmc_host *host, u32 ocr);
int mmc_send_relative_addr(struct mmc_host *host, unsigned int *rca);
int mmc_app_send_scr(struct mmc_card *card, u32 *scr);
int mmc_app_send_scr(struct mmc_card *card);
int mmc_sd_switch(struct mmc_card *card, int mode, int group,
u8 value, u8 *resp);
int mmc_app_sd_status(struct mmc_card *card, void *ssr);

54
drivers/mmc/core/sdio_io.c
View file

@ -373,19 +373,16 @@ u8 sdio_readb(struct sdio_func *func, unsigned int addr, int *err_ret)
u8 val;
if (!func) {
*err_ret = -EINVAL;
if (err_ret)
*err_ret = -EINVAL;
return 0xFF;
}
if (err_ret)
*err_ret = 0;
ret = mmc_io_rw_direct(func->card, 0, func->num, addr, 0, &val);
if (ret) {
if (err_ret)
*err_ret = ret;
if (err_ret)
*err_ret = ret;
if (ret)
return 0xFF;
}
return val;
}
@ -407,7 +404,8 @@ void sdio_writeb(struct sdio_func *func, u8 b, unsigned int addr, int *err_ret)
int ret;
if (!func) {
*err_ret = -EINVAL;
if (err_ret)
*err_ret = -EINVAL;
return;
}
@ -441,7 +439,7 @@ u8 sdio_writeb_readb(struct sdio_func *func, u8 write_byte,
if (err_ret)
*err_ret = ret;
if (ret)
val = 0xff;
return 0xff;
return val;
}
@ -529,15 +527,11 @@ u16 sdio_readw(struct sdio_func *func, unsigned int addr, int *err_ret)
{
int ret;
if (err_ret)
*err_ret = 0;
ret = sdio_memcpy_fromio(func, func->tmpbuf, addr, 2);
if (ret) {
if (err_ret)
*err_ret = ret;
if (err_ret)
*err_ret = ret;
if (ret)
return 0xFFFF;
}
return le16_to_cpup((__le16 *)func->tmpbuf);
}
@ -581,15 +575,11 @@ u32 sdio_readl(struct sdio_func *func, unsigned int addr, int *err_ret)
{
int ret;
if (err_ret)
*err_ret = 0;
ret = sdio_memcpy_fromio(func, func->tmpbuf, addr, 4);
if (ret) {
if (err_ret)
*err_ret = ret;
if (err_ret)
*err_ret = ret;
if (ret)
return 0xFFFFFFFF;
}
return le32_to_cpup((__le32 *)func->tmpbuf);
}
@ -635,19 +625,16 @@ unsigned char sdio_f0_readb(struct sdio_func *func, unsigned int addr,
unsigned char val;
if (!func) {
*err_ret = -EINVAL;
if (err_ret)
*err_ret = -EINVAL;
return 0xFF;
}
if (err_ret)
*err_ret = 0;
ret = mmc_io_rw_direct(func->card, 0, 0, addr, 0, &val);
if (ret) {
if (err_ret)
*err_ret = ret;
if (err_ret)
*err_ret = ret;
if (ret)
return 0xFF;
}
return val;
}
@ -673,7 +660,8 @@ void sdio_f0_writeb(struct sdio_func *func, unsigned char b, unsigned int addr,
int ret;
if (!func) {
*err_ret = -EINVAL;
if (err_ret)
*err_ret = -EINVAL;
return;
}

9
drivers/mmc/core/sdio_ops.c
View file

@ -152,7 +152,7 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
data.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
left_size = data.blksz * data.blocks;
nents = (left_size - 1) / seg_size + 1;
nents = DIV_ROUND_UP(left_size, seg_size);
if (nents > 1) {
if (sg_alloc_table(&sgtable, nents, GFP_KERNEL))
return -ENOMEM;
@ -161,10 +161,9 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
data.sg_len = nents;
for_each_sg(data.sg, sg_ptr, data.sg_len, i) {
sg_set_page(sg_ptr, virt_to_page(buf + (i * seg_size)),
min(seg_size, left_size),
offset_in_page(buf + (i * seg_size)));
left_size = left_size - seg_size;
sg_set_buf(sg_ptr, buf + i * seg_size,
min(seg_size, left_size));
left_size -= seg_size;
}
} else {
data.sg = &sg;

10
drivers/mmc/core/sdio_ops.h
View file

@ -26,9 +26,15 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
int sdio_reset(struct mmc_host *host);
unsigned int mmc_align_data_size(struct mmc_card *card, unsigned int sz);
static inline bool mmc_is_io_op(u32 opcode)
static inline bool sdio_is_io_busy(u32 opcode, u32 arg)
{
return opcode == SD_IO_RW_DIRECT || opcode == SD_IO_RW_EXTENDED;
u32 addr;
addr = (arg >> 9) & 0x1FFFF;
return (opcode == SD_IO_RW_EXTENDED ||
(opcode == SD_IO_RW_DIRECT &&
!(addr == SDIO_CCCR_ABORT || addr == SDIO_CCCR_SUSPEND)));
}
#endif

43
drivers/mmc/host/Kconfig
View file

@ -622,6 +622,27 @@ config SDH_BFIN_MISSING_CMD_PULLUP_WORKAROUND
help
If you say yes here SD-Cards may work on the EZkit.
config MMC_CAVIUM_OCTEON
tristate "Cavium OCTEON SD/MMC Card Interface support"
depends on CAVIUM_OCTEON_SOC
help
This selects Cavium OCTEON SD/MMC card Interface.
If you have an OCTEON board with a Multimedia Card slot,
say Y or M here.
If unsure, say N.
config MMC_CAVIUM_THUNDERX
tristate "Cavium ThunderX SD/MMC Card Interface support"
depends on PCI && 64BIT && (ARM64 || COMPILE_TEST)
depends on GPIOLIB
depends on OF_ADDRESS
help
This selects Cavium ThunderX SD/MMC Card Interface.
If you have an Cavium ARM64 board with a Multimedia Card slot
or builtin eMMC chip say Y or M here. If built as a module
the module will be called thunderx_mmc.ko.
config MMC_DW
tristate "Synopsys DesignWare Memory Card Interface"
depends on HAS_DMA
@ -799,6 +820,20 @@ config MMC_TOSHIBA_PCI
depends on PCI
help
config MMC_BCM2835
tristate "Broadcom BCM2835 SDHOST MMC Controller support"
depends on ARCH_BCM2835 || COMPILE_TEST
depends on HAS_DMA
help
This selects the BCM2835 SDHOST MMC controller. If you have
a BCM2835 platform with SD or MMC devices, say Y or M here.
Note that the BCM2835 has two SD controllers: The Arasan
sdhci controller (supported by MMC_SDHCI_IPROC) and a custom
sdhost controller (supported by this driver).
If unsure, say N.
config MMC_MTK
tristate "MediaTek SD/MMC Card Interface support"
depends on HAS_DMA
@ -828,3 +863,11 @@ config MMC_SDHCI_BRCMSTB
Broadcom STB SoCs.
If unsure, say Y.
config MMC_SDHCI_XENON
tristate "Marvell Xenon eMMC/SD/SDIO SDHCI driver"
depends on MMC_SDHCI_PLTFM
help
This selects Marvell Xenon eMMC/SD/SDIO SDHCI.
If you have a controller with this interface, say Y or M here.
If unsure, say N.

8
drivers/mmc/host/Makefile
View file

@ -42,6 +42,10 @@ obj-$(CONFIG_MMC_SDHI) += sh_mobile_sdhi.o
obj-$(CONFIG_MMC_CB710) += cb710-mmc.o
obj-$(CONFIG_MMC_VIA_SDMMC) += via-sdmmc.o
obj-$(CONFIG_SDH_BFIN) += bfin_sdh.o
octeon-mmc-objs := cavium.o cavium-octeon.o
obj-$(CONFIG_MMC_CAVIUM_OCTEON) += octeon-mmc.o
thunderx-mmc-objs := cavium.o cavium-thunderx.o
obj-$(CONFIG_MMC_CAVIUM_THUNDERX) += thunderx-mmc.o
obj-$(CONFIG_MMC_DW) += dw_mmc.o
obj-$(CONFIG_MMC_DW_PLTFM) += dw_mmc-pltfm.o
obj-$(CONFIG_MMC_DW_EXYNOS) += dw_mmc-exynos.o
@ -59,6 +63,7 @@ obj-$(CONFIG_MMC_MOXART) += moxart-mmc.o
obj-$(CONFIG_MMC_SUNXI) += sunxi-mmc.o
obj-$(CONFIG_MMC_USDHI6ROL0) += usdhi6rol0.o
obj-$(CONFIG_MMC_TOSHIBA_PCI) += toshsd.o
obj-$(CONFIG_MMC_BCM2835) += bcm2835.o
obj-$(CONFIG_MMC_REALTEK_PCI) += rtsx_pci_sdmmc.o
obj-$(CONFIG_MMC_REALTEK_USB) += rtsx_usb_sdmmc.o
@ -83,3 +88,6 @@ obj-$(CONFIG_MMC_SDHCI_BRCMSTB) += sdhci-brcmstb.o
ifeq ($(CONFIG_CB710_DEBUG),y)
CFLAGS-cb710-mmc += -DDEBUG
endif
obj-$(CONFIG_MMC_SDHCI_XENON) += sdhci-xenon-driver.o
sdhci-xenon-driver-y += sdhci-xenon.o sdhci-xenon-phy.o

10
drivers/mmc/host/android-goldfish.c
View file

@ -212,10 +212,7 @@ static void goldfish_mmc_xfer_done(struct goldfish_mmc_host *host,
if (host->dma_in_use) {
enum dma_data_direction dma_data_dir;
if (data->flags & MMC_DATA_WRITE)
dma_data_dir = DMA_TO_DEVICE;
else
dma_data_dir = DMA_FROM_DEVICE;
dma_data_dir = mmc_get_dma_dir(data);
if (dma_data_dir == DMA_FROM_DEVICE) {
/*
@ -390,10 +387,7 @@ static void goldfish_mmc_prepare_data(struct goldfish_mmc_host *host,
*/
sg_len = (data->blocks == 1) ? 1 : data->sg_len;
if (data->flags & MMC_DATA_WRITE)
dma_data_dir = DMA_TO_DEVICE;
else
dma_data_dir = DMA_FROM_DEVICE;
dma_data_dir = mmc_get_dma_dir(data);
host->sg_len = dma_map_sg(mmc_dev(host->mmc), data->sg,
sg_len, dma_data_dir);

30
drivers/mmc/host/atmel-mci.c
View file

@ -954,8 +954,7 @@ static void atmci_pdc_cleanup(struct atmel_mci *host)
if (data)
dma_unmap_sg(&host->pdev->dev,
data->sg, data->sg_len,
((data->flags & MMC_DATA_WRITE)
? DMA_TO_DEVICE : DMA_FROM_DEVICE));
mmc_get_dma_dir(data));
}
/*
@ -993,8 +992,7 @@ static void atmci_dma_cleanup(struct atmel_mci *host)
if (data)
dma_unmap_sg(host->dma.chan->device->dev,
data->sg, data->sg_len,
((data->flags & MMC_DATA_WRITE)
? DMA_TO_DEVICE : DMA_FROM_DEVICE));
mmc_get_dma_dir(data));
}
/*
@ -1095,7 +1093,6 @@ atmci_prepare_data_pdc(struct atmel_mci *host, struct mmc_data *data)
{
u32 iflags, tmp;
unsigned int sg_len;
enum dma_data_direction dir;
int i;
data->error = -EINPROGRESS;
@ -1107,13 +1104,10 @@ atmci_prepare_data_pdc(struct atmel_mci *host, struct mmc_data *data)
/* Enable pdc mode */
atmci_writel(host, ATMCI_MR, host->mode_reg | ATMCI_MR_PDCMODE);
if (data->flags & MMC_DATA_READ) {
dir = DMA_FROM_DEVICE;
if (data->flags & MMC_DATA_READ)
iflags |= ATMCI_ENDRX | ATMCI_RXBUFF;
} else {
dir = DMA_TO_DEVICE;
else
iflags |= ATMCI_ENDTX | ATMCI_TXBUFE | ATMCI_BLKE;
}
/* Set BLKLEN */
tmp = atmci_readl(host, ATMCI_MR);
@ -1123,7 +1117,8 @@ atmci_prepare_data_pdc(struct atmel_mci *host, struct mmc_data *data)
/* Configure PDC */
host->data_size = data->blocks * data->blksz;
sg_len = dma_map_sg(&host->pdev->dev, data->sg, data->sg_len, dir);
sg_len = dma_map_sg(&host->pdev->dev, data->sg, data->sg_len,
mmc_get_dma_dir(data));
if ((!host->caps.has_rwproof)
&& (host->data->flags & MMC_DATA_WRITE)) {
@ -1135,9 +1130,8 @@ atmci_prepare_data_pdc(struct atmel_mci *host, struct mmc_data *data)
}
if (host->data_size)
atmci_pdc_set_both_buf(host,
((dir == DMA_FROM_DEVICE) ? XFER_RECEIVE : XFER_TRANSMIT));
atmci_pdc_set_both_buf(host, data->flags & MMC_DATA_READ ?
XFER_RECEIVE : XFER_TRANSMIT);
return iflags;
}
@ -1148,7 +1142,6 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
struct dma_async_tx_descriptor *desc;
struct scatterlist *sg;
unsigned int i;
enum dma_data_direction direction;
enum dma_transfer_direction slave_dirn;
unsigned int sglen;
u32 maxburst;
@ -1186,12 +1179,10 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
return -ENODEV;
if (data->flags & MMC_DATA_READ) {
direction = DMA_FROM_DEVICE;
host->dma_conf.direction = slave_dirn = DMA_DEV_TO_MEM;
maxburst = atmci_convert_chksize(host,
host->dma_conf.src_maxburst);
} else {
direction = DMA_TO_DEVICE;
host->dma_conf.direction = slave_dirn = DMA_MEM_TO_DEV;
maxburst = atmci_convert_chksize(host,
host->dma_conf.dst_maxburst);
@ -1202,7 +1193,7 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
ATMCI_DMAEN);
sglen = dma_map_sg(chan->device->dev, data->sg,
data->sg_len, direction);
data->sg_len, mmc_get_dma_dir(data));
dmaengine_slave_config(chan, &host->dma_conf);
desc = dmaengine_prep_slave_sg(chan,
@ -1217,7 +1208,8 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data)
return iflags;
unmap_exit:
dma_unmap_sg(chan->device->dev, data->sg, data->sg_len, direction);
dma_unmap_sg(chan->device->dev, data->sg, data->sg_len,
mmc_get_dma_dir(data));
return -ENOMEM;
}

1466
drivers/mmc/host/bcm2835.c Normal file
View file

File diff suppressed because it is too large Load diff

351
drivers/mmc/host/cavium-octeon.c Normal file
View file

@ -0,0 +1,351 @@
/*
* Driver for MMC and SSD cards for Cavium OCTEON SOCs.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2012-2017 Cavium Inc.
*/
#include <linux/dma-mapping.h>
#include <linux/gpio/consumer.h>
#include <linux/interrupt.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/slot-gpio.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <asm/octeon/octeon.h>
#include "cavium.h"
#define CVMX_MIO_BOOT_CTL CVMX_ADD_IO_SEG(0x00011800000000D0ull)
/*
* The l2c* functions below are used for the EMMC-17978 workaround.
*
* Due to a bug in the design of the MMC bus hardware, the 2nd to last
* cache block of a DMA read must be locked into the L2 Cache.
* Otherwise, data corruption may occur.
*/
static inline void *phys_to_ptr(u64 address)
{
return (void *)(address | (1ull << 63)); /* XKPHYS */
}
/*
* Lock a single line into L2. The line is zeroed before locking
* to make sure no dram accesses are made.
*/
static void l2c_lock_line(u64 addr)
{
char *addr_ptr = phys_to_ptr(addr);
asm volatile (
"cache 31, %[line]" /* Unlock the line */
::[line] "m" (*addr_ptr));
}
/* Unlock a single line in the L2 cache. */
static void l2c_unlock_line(u64 addr)
{
char *addr_ptr = phys_to_ptr(addr);
asm volatile (
"cache 23, %[line]" /* Unlock the line */
::[line] "m" (*addr_ptr));
}
/* Locks a memory region in the L2 cache. */
static void l2c_lock_mem_region(u64 start, u64 len)
{
u64 end;
/* Round start/end to cache line boundaries */
end = ALIGN(start + len - 1, CVMX_CACHE_LINE_SIZE);
start = ALIGN(start, CVMX_CACHE_LINE_SIZE);
while (start <= end) {
l2c_lock_line(start);
start += CVMX_CACHE_LINE_SIZE;
}
asm volatile("sync");
}
/* Unlock a memory region in the L2 cache. */
static void l2c_unlock_mem_region(u64 start, u64 len)
{
u64 end;
/* Round start/end to cache line boundaries */
end = ALIGN(start + len - 1, CVMX_CACHE_LINE_SIZE);
start = ALIGN(start, CVMX_CACHE_LINE_SIZE);
while (start <= end) {
l2c_unlock_line(start);
start += CVMX_CACHE_LINE_SIZE;
}
}
static void octeon_mmc_acquire_bus(struct cvm_mmc_host *host)
{
if (!host->has_ciu3) {
down(&octeon_bootbus_sem);
/* For CN70XX, switch the MMC controller onto the bus. */
if (OCTEON_IS_MODEL(OCTEON_CN70XX))
writeq(0, (void __iomem *)CVMX_MIO_BOOT_CTL);
} else {
down(&host->mmc_serializer);
}
}
static void octeon_mmc_release_bus(struct cvm_mmc_host *host)
{
if (!host->has_ciu3)
up(&octeon_bootbus_sem);
else
up(&host->mmc_serializer);
}
static void octeon_mmc_int_enable(struct cvm_mmc_host *host, u64 val)
{
writeq(val, host->base + MIO_EMM_INT(host));
if (!host->dma_active || (host->dma_active && !host->has_ciu3))
writeq(val, host->base + MIO_EMM_INT_EN(host));
}
static void octeon_mmc_set_shared_power(struct cvm_mmc_host *host, int dir)
{
if (dir == 0)
if (!atomic_dec_return(&host->shared_power_users))
gpiod_set_value_cansleep(host->global_pwr_gpiod, 0);
if (dir == 1)
if (atomic_inc_return(&host->shared_power_users) == 1)
gpiod_set_value_cansleep(host->global_pwr_gpiod, 1);
}
static void octeon_mmc_dmar_fixup(struct cvm_mmc_host *host,
struct mmc_command *cmd,
struct mmc_data *data,
u64 addr)
{
if (cmd->opcode != MMC_WRITE_MULTIPLE_BLOCK)
return;
if (data->blksz * data->blocks <= 1024)
return;
host->n_minus_one = addr + (data->blksz * data->blocks) - 1024;
l2c_lock_mem_region(host->n_minus_one, 512);
}
static void octeon_mmc_dmar_fixup_done(struct cvm_mmc_host *host)
{
if (!host->n_minus_one)
return;
l2c_unlock_mem_region(host->n_minus_one, 512);
host->n_minus_one = 0;
}
static int octeon_mmc_probe(struct platform_device *pdev)
{
struct device_node *cn, *node = pdev->dev.of_node;
struct cvm_mmc_host *host;
struct resource *res;
void __iomem *base;
int mmc_irq[9];
int i, ret = 0;
u64 val;
host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL);
if (!host)
return -ENOMEM;
spin_lock_init(&host->irq_handler_lock);
sema_init(&host->mmc_serializer, 1);
host->dev = &pdev->dev;
host->acquire_bus = octeon_mmc_acquire_bus;
host->release_bus = octeon_mmc_release_bus;
host->int_enable = octeon_mmc_int_enable;
host->set_shared_power = octeon_mmc_set_shared_power;
if (OCTEON_IS_MODEL(OCTEON_CN6XXX) ||
OCTEON_IS_MODEL(OCTEON_CNF7XXX)) {
host->dmar_fixup = octeon_mmc_dmar_fixup;
host->dmar_fixup_done = octeon_mmc_dmar_fixup_done;
}
host->sys_freq = octeon_get_io_clock_rate();
if (of_device_is_compatible(node, "cavium,octeon-7890-mmc")) {
host->big_dma_addr = true;
host->need_irq_handler_lock = true;
host->has_ciu3 = true;
host->use_sg = true;
/*
* First seven are the EMM_INT bits 0..6, then two for
* the EMM_DMA_INT bits
*/
for (i = 0; i < 9; i++) {
mmc_irq[i] = platform_get_irq(pdev, i);
if (mmc_irq[i] < 0)
return mmc_irq[i];
/* work around legacy u-boot device trees */
irq_set_irq_type(mmc_irq[i], IRQ_TYPE_EDGE_RISING);
}
} else {
host->big_dma_addr = false;
host->need_irq_handler_lock = false;
host->has_ciu3 = false;
/* First one is EMM second DMA */
for (i = 0; i < 2; i++) {
mmc_irq[i] = platform_get_irq(pdev, i);
if (mmc_irq[i] < 0)
return mmc_irq[i];
}
}
host->last_slot = -1;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "Platform resource[0] is missing\n");
return -ENXIO;
}
base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(base))
return PTR_ERR(base);
host->base = (void __iomem *)base;
host->reg_off = 0;
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (!res) {
dev_err(&pdev->dev, "Platform resource[1] is missing\n");
return -EINVAL;
}
base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(base))
return PTR_ERR(base);
host->dma_base = (void __iomem *)base;
/*
* To keep the register addresses shared we intentionaly use
* a negative offset here, first register used on Octeon therefore
* starts at 0x20 (MIO_EMM_DMA_CFG).
*/
host->reg_off_dma = -0x20;
ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
if (ret)
return ret;
/*
* Clear out any pending interrupts that may be left over from
* bootloader.
*/
val = readq(host->base + MIO_EMM_INT(host));
writeq(val, host->base + MIO_EMM_INT(host));
if (host->has_ciu3) {
/* Only CMD_DONE, DMA_DONE, CMD_ERR, DMA_ERR */
for (i = 1; i <= 4; i++) {
ret = devm_request_irq(&pdev->dev, mmc_irq[i],
cvm_mmc_interrupt,
0, cvm_mmc_irq_names[i], host);
if (ret < 0) {
dev_err(&pdev->dev, "Error: devm_request_irq %d\n",
mmc_irq[i]);
return ret;
}
}
} else {
ret = devm_request_irq(&pdev->dev, mmc_irq[0],
cvm_mmc_interrupt, 0, KBUILD_MODNAME,
host);
if (ret < 0) {
dev_err(&pdev->dev, "Error: devm_request_irq %d\n",
mmc_irq[0]);
return ret;
}
}
host->global_pwr_gpiod = devm_gpiod_get_optional(&pdev->dev,
"power-gpios",
GPIOD_OUT_HIGH);
if (IS_ERR(host->global_pwr_gpiod)) {
dev_err(&pdev->dev, "Invalid power GPIO\n");
return PTR_ERR(host->global_pwr_gpiod);
}
platform_set_drvdata(pdev, host);
i = 0;
for_each_child_of_node(node, cn) {
host->slot_pdev[i] =
of_platform_device_create(cn, NULL, &pdev->dev);
if (!host->slot_pdev[i]) {
i++;
continue;
}
ret = cvm_mmc_of_slot_probe(&host->slot_pdev[i]->dev, host);
if (ret) {
dev_err(&pdev->dev, "Error populating slots\n");
octeon_mmc_set_shared_power(host, 0);
return ret;
}
i++;
}
return 0;
}
static int octeon_mmc_remove(struct platform_device *pdev)
{
struct cvm_mmc_host *host = platform_get_drvdata(pdev);
u64 dma_cfg;
int i;
for (i = 0; i < CAVIUM_MAX_MMC; i++)
if (host->slot[i])
cvm_mmc_of_slot_remove(host->slot[i]);
dma_cfg = readq(host->dma_base + MIO_EMM_DMA_CFG(host));
dma_cfg &= ~MIO_EMM_DMA_CFG_EN;
writeq(dma_cfg, host->dma_base + MIO_EMM_DMA_CFG(host));
octeon_mmc_set_shared_power(host, 0);
return 0;
}
static const struct of_device_id octeon_mmc_match[] = {
{
.compatible = "cavium,octeon-6130-mmc",
},
{
.compatible = "cavium,octeon-7890-mmc",
},
{},
};
MODULE_DEVICE_TABLE(of, octeon_mmc_match);
static struct platform_driver octeon_mmc_driver = {
.probe = octeon_mmc_probe,
.remove = octeon_mmc_remove,
.driver = {
.name = KBUILD_MODNAME,
.of_match_table = octeon_mmc_match,
},
};
static int __init octeon_mmc_init(void)
{
return platform_driver_register(&octeon_mmc_driver);
}
static void __exit octeon_mmc_cleanup(void)
{
platform_driver_unregister(&octeon_mmc_driver);
}
module_init(octeon_mmc_init);
module_exit(octeon_mmc_cleanup);
MODULE_AUTHOR("Cavium Inc. <support@cavium.com>");
MODULE_DESCRIPTION("Low-level driver for Cavium OCTEON MMC/SSD card");
MODULE_LICENSE("GPL");

187
drivers/mmc/host/cavium-thunderx.c Normal file
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/*
* Driver for MMC and SSD cards for Cavium ThunderX SOCs.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2016 Cavium Inc.
*/
#include <linux/dma-mapping.h>
#include <linux/interrupt.h>
#include <linux/mmc/mmc.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/pci.h>
#include "cavium.h"
static void thunder_mmc_acquire_bus(struct cvm_mmc_host *host)
{
down(&host->mmc_serializer);
}
static void thunder_mmc_release_bus(struct cvm_mmc_host *host)
{
up(&host->mmc_serializer);
}
static void thunder_mmc_int_enable(struct cvm_mmc_host *host, u64 val)
{
writeq(val, host->base + MIO_EMM_INT(host));
writeq(val, host->base + MIO_EMM_INT_EN_SET(host));
}
static int thunder_mmc_register_interrupts(struct cvm_mmc_host *host,
struct pci_dev *pdev)
{
int nvec, ret, i;
nvec = pci_alloc_irq_vectors(pdev, 1, 9, PCI_IRQ_MSIX);
if (nvec < 0)
return nvec;
/* register interrupts */
for (i = 0; i < nvec; i++) {
ret = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, i),
cvm_mmc_interrupt,
0, cvm_mmc_irq_names[i], host);
if (ret)
return ret;
}
return 0;
}
static int thunder_mmc_probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
struct device_node *node = pdev->dev.of_node;
struct device *dev = &pdev->dev;
struct device_node *child_node;
struct cvm_mmc_host *host;
int ret, i = 0;
host = devm_kzalloc(dev, sizeof(*host), GFP_KERNEL);
if (!host)
return -ENOMEM;
pci_set_drvdata(pdev, host);
ret = pcim_enable_device(pdev);
if (ret)
return ret;
ret = pci_request_regions(pdev, KBUILD_MODNAME);
if (ret)
return ret;
host->base = pcim_iomap(pdev, 0, pci_resource_len(pdev, 0));
if (!host->base)
return -EINVAL;
/* On ThunderX these are identical */
host->dma_base = host->base;
host->reg_off = 0x2000;
host->reg_off_dma = 0x160;
host->clk = devm_clk_get(dev, NULL);
if (IS_ERR(host->clk))
return PTR_ERR(host->clk);
ret = clk_prepare_enable(host->clk);
if (ret)
return ret;
host->sys_freq = clk_get_rate(host->clk);
spin_lock_init(&host->irq_handler_lock);
sema_init(&host->mmc_serializer, 1);
host->dev = dev;
host->acquire_bus = thunder_mmc_acquire_bus;
host->release_bus = thunder_mmc_release_bus;
host->int_enable = thunder_mmc_int_enable;
host->use_sg = true;
host->big_dma_addr = true;
host->need_irq_handler_lock = true;
host->last_slot = -1;
ret = dma_set_mask(dev, DMA_BIT_MASK(48));
if (ret)
goto error;
/*
* Clear out any pending interrupts that may be left over from
* bootloader. Writing 1 to the bits clears them.
*/
writeq(127, host->base + MIO_EMM_INT_EN(host));
writeq(3, host->base + MIO_EMM_DMA_INT_ENA_W1C(host));
/* Clear DMA FIFO */
writeq(BIT_ULL(16), host->base + MIO_EMM_DMA_FIFO_CFG(host));
ret = thunder_mmc_register_interrupts(host, pdev);
if (ret)
goto error;
for_each_child_of_node(node, child_node) {
/*
* mmc_of_parse and devm* require one device per slot.
* Create a dummy device per slot and set the node pointer to
* the slot. The easiest way to get this is using
* of_platform_device_create.
*/
if (of_device_is_compatible(child_node, "mmc-slot")) {
host->slot_pdev[i] = of_platform_device_create(child_node, NULL,
&pdev->dev);
if (!host->slot_pdev[i])
continue;
ret = cvm_mmc_of_slot_probe(&host->slot_pdev[i]->dev, host);
if (ret)
goto error;
}
i++;
}
dev_info(dev, "probed\n");
return 0;
error:
clk_disable_unprepare(host->clk);
return ret;
}
static void thunder_mmc_remove(struct pci_dev *pdev)
{
struct cvm_mmc_host *host = pci_get_drvdata(pdev);
u64 dma_cfg;
int i;
for (i = 0; i < CAVIUM_MAX_MMC; i++)
if (host->slot[i])
cvm_mmc_of_slot_remove(host->slot[i]);
dma_cfg = readq(host->dma_base + MIO_EMM_DMA_CFG(host));
dma_cfg &= ~MIO_EMM_DMA_CFG_EN;
writeq(dma_cfg, host->dma_base + MIO_EMM_DMA_CFG(host));
clk_disable_unprepare(host->clk);
}
static const struct pci_device_id thunder_mmc_id_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, 0xa010) },
{ 0, } /* end of table */
};
static struct pci_driver thunder_mmc_driver = {
.name = KBUILD_MODNAME,
.id_table = thunder_mmc_id_table,
.probe = thunder_mmc_probe,
.remove = thunder_mmc_remove,
};
module_pci_driver(thunder_mmc_driver);
MODULE_AUTHOR("Cavium Inc.");
MODULE_DESCRIPTION("Cavium ThunderX eMMC Driver");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, thunder_mmc_id_table);

1090
drivers/mmc/host/cavium.c Normal file
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File diff suppressed because it is too large Load diff

215
drivers/mmc/host/cavium.h Normal file
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@ -0,0 +1,215 @@
/*
* Driver for MMC and SSD cards for Cavium OCTEON and ThunderX SOCs.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2012-2017 Cavium Inc.
*/
#ifndef _CAVIUM_MMC_H_
#define _CAVIUM_MMC_H_
#include <linux/bitops.h>
#include <linux/clk.h>
#include <linux/gpio/consumer.h>
#include <linux/io.h>
#include <linux/mmc/host.h>
#include <linux/of.h>
#include <linux/scatterlist.h>
#include <linux/semaphore.h>
#define CAVIUM_MAX_MMC 4
/* DMA register addresses */
#define MIO_EMM_DMA_FIFO_CFG(x) (0x00 + x->reg_off_dma)
#define MIO_EMM_DMA_FIFO_ADR(x) (0x10 + x->reg_off_dma)
#define MIO_EMM_DMA_FIFO_CMD(x) (0x18 + x->reg_off_dma)
#define MIO_EMM_DMA_CFG(x) (0x20 + x->reg_off_dma)
#define MIO_EMM_DMA_ADR(x) (0x28 + x->reg_off_dma)
#define MIO_EMM_DMA_INT(x) (0x30 + x->reg_off_dma)
#define MIO_EMM_DMA_INT_W1S(x) (0x38 + x->reg_off_dma)
#define MIO_EMM_DMA_INT_ENA_W1S(x) (0x40 + x->reg_off_dma)
#define MIO_EMM_DMA_INT_ENA_W1C(x) (0x48 + x->reg_off_dma)
/* register addresses */
#define MIO_EMM_CFG(x) (0x00 + x->reg_off)
#define MIO_EMM_SWITCH(x) (0x48 + x->reg_off)
#define MIO_EMM_DMA(x) (0x50 + x->reg_off)
#define MIO_EMM_CMD(x) (0x58 + x->reg_off)
#define MIO_EMM_RSP_STS(x) (0x60 + x->reg_off)
#define MIO_EMM_RSP_LO(x) (0x68 + x->reg_off)
#define MIO_EMM_RSP_HI(x) (0x70 + x->reg_off)
#define MIO_EMM_INT(x) (0x78 + x->reg_off)
#define MIO_EMM_INT_EN(x) (0x80 + x->reg_off)
#define MIO_EMM_WDOG(x) (0x88 + x->reg_off)
#define MIO_EMM_SAMPLE(x) (0x90 + x->reg_off)
#define MIO_EMM_STS_MASK(x) (0x98 + x->reg_off)
#define MIO_EMM_RCA(x) (0xa0 + x->reg_off)
#define MIO_EMM_INT_EN_SET(x) (0xb0 + x->reg_off)
#define MIO_EMM_INT_EN_CLR(x) (0xb8 + x->reg_off)
#define MIO_EMM_BUF_IDX(x) (0xe0 + x->reg_off)
#define MIO_EMM_BUF_DAT(x) (0xe8 + x->reg_off)
struct cvm_mmc_host {
struct device *dev;
void __iomem *base;
void __iomem *dma_base;
int reg_off;
int reg_off_dma;
u64 emm_cfg;
u64 n_minus_one; /* OCTEON II workaround location */
int last_slot;
struct clk *clk;
int sys_freq;
struct mmc_request *current_req;
struct sg_mapping_iter smi;
bool dma_active;
bool use_sg;
bool has_ciu3;
bool big_dma_addr;
bool need_irq_handler_lock;
spinlock_t irq_handler_lock;
struct semaphore mmc_serializer;
struct gpio_desc *global_pwr_gpiod;
atomic_t shared_power_users;
struct cvm_mmc_slot *slot[CAVIUM_MAX_MMC];
struct platform_device *slot_pdev[CAVIUM_MAX_MMC];
void (*set_shared_power)(struct cvm_mmc_host *, int);
void (*acquire_bus)(struct cvm_mmc_host *);
void (*release_bus)(struct cvm_mmc_host *);
void (*int_enable)(struct cvm_mmc_host *, u64);
/* required on some MIPS models */
void (*dmar_fixup)(struct cvm_mmc_host *, struct mmc_command *,
struct mmc_data *, u64);
void (*dmar_fixup_done)(struct cvm_mmc_host *);
};
struct cvm_mmc_slot {
struct mmc_host *mmc; /* slot-level mmc_core object */
struct cvm_mmc_host *host; /* common hw for all slots */
u64 clock;
u64 cached_switch;
u64 cached_rca;
unsigned int cmd_cnt; /* sample delay */
unsigned int dat_cnt; /* sample delay */
int bus_id;
};
struct cvm_mmc_cr_type {
u8 ctype;
u8 rtype;
};
struct cvm_mmc_cr_mods {
u8 ctype_xor;
u8 rtype_xor;
};
/* Bitfield definitions */
#define MIO_EMM_DMA_FIFO_CFG_CLR BIT_ULL(16)
#define MIO_EMM_DMA_FIFO_CFG_INT_LVL GENMASK_ULL(12, 8)
#define MIO_EMM_DMA_FIFO_CFG_COUNT GENMASK_ULL(4, 0)
#define MIO_EMM_DMA_FIFO_CMD_RW BIT_ULL(62)
#define MIO_EMM_DMA_FIFO_CMD_INTDIS BIT_ULL(60)
#define MIO_EMM_DMA_FIFO_CMD_SWAP32 BIT_ULL(59)
#define MIO_EMM_DMA_FIFO_CMD_SWAP16 BIT_ULL(58)
#define MIO_EMM_DMA_FIFO_CMD_SWAP8 BIT_ULL(57)
#define MIO_EMM_DMA_FIFO_CMD_ENDIAN BIT_ULL(56)
#define MIO_EMM_DMA_FIFO_CMD_SIZE GENMASK_ULL(55, 36)
#define MIO_EMM_CMD_SKIP_BUSY BIT_ULL(62)
#define MIO_EMM_CMD_BUS_ID GENMASK_ULL(61, 60)
#define MIO_EMM_CMD_VAL BIT_ULL(59)
#define MIO_EMM_CMD_DBUF BIT_ULL(55)
#define MIO_EMM_CMD_OFFSET GENMASK_ULL(54, 49)
#define MIO_EMM_CMD_CTYPE_XOR GENMASK_ULL(42, 41)
#define MIO_EMM_CMD_RTYPE_XOR GENMASK_ULL(40, 38)
#define MIO_EMM_CMD_IDX GENMASK_ULL(37, 32)
#define MIO_EMM_CMD_ARG GENMASK_ULL(31, 0)
#define MIO_EMM_DMA_SKIP_BUSY BIT_ULL(62)
#define MIO_EMM_DMA_BUS_ID GENMASK_ULL(61, 60)
#define MIO_EMM_DMA_VAL BIT_ULL(59)
#define MIO_EMM_DMA_SECTOR BIT_ULL(58)
#define MIO_EMM_DMA_DAT_NULL BIT_ULL(57)
#define MIO_EMM_DMA_THRES GENMASK_ULL(56, 51)
#define MIO_EMM_DMA_REL_WR BIT_ULL(50)
#define MIO_EMM_DMA_RW BIT_ULL(49)
#define MIO_EMM_DMA_MULTI BIT_ULL(48)
#define MIO_EMM_DMA_BLOCK_CNT GENMASK_ULL(47, 32)
#define MIO_EMM_DMA_CARD_ADDR GENMASK_ULL(31, 0)
#define MIO_EMM_DMA_CFG_EN BIT_ULL(63)
#define MIO_EMM_DMA_CFG_RW BIT_ULL(62)
#define MIO_EMM_DMA_CFG_CLR BIT_ULL(61)
#define MIO_EMM_DMA_CFG_SWAP32 BIT_ULL(59)
#define MIO_EMM_DMA_CFG_SWAP16 BIT_ULL(58)
#define MIO_EMM_DMA_CFG_SWAP8 BIT_ULL(57)
#define MIO_EMM_DMA_CFG_ENDIAN BIT_ULL(56)
#define MIO_EMM_DMA_CFG_SIZE GENMASK_ULL(55, 36)
#define MIO_EMM_DMA_CFG_ADR GENMASK_ULL(35, 0)
#define MIO_EMM_INT_SWITCH_ERR BIT_ULL(6)
#define MIO_EMM_INT_SWITCH_DONE BIT_ULL(5)
#define MIO_EMM_INT_DMA_ERR BIT_ULL(4)
#define MIO_EMM_INT_CMD_ERR BIT_ULL(3)
#define MIO_EMM_INT_DMA_DONE BIT_ULL(2)
#define MIO_EMM_INT_CMD_DONE BIT_ULL(1)
#define MIO_EMM_INT_BUF_DONE BIT_ULL(0)
#define MIO_EMM_RSP_STS_BUS_ID GENMASK_ULL(61, 60)
#define MIO_EMM_RSP_STS_CMD_VAL BIT_ULL(59)
#define MIO_EMM_RSP_STS_SWITCH_VAL BIT_ULL(58)
#define MIO_EMM_RSP_STS_DMA_VAL BIT_ULL(57)
#define MIO_EMM_RSP_STS_DMA_PEND BIT_ULL(56)
#define MIO_EMM_RSP_STS_DBUF_ERR BIT_ULL(28)
#define MIO_EMM_RSP_STS_DBUF BIT_ULL(23)
#define MIO_EMM_RSP_STS_BLK_TIMEOUT BIT_ULL(22)
#define MIO_EMM_RSP_STS_BLK_CRC_ERR BIT_ULL(21)
#define MIO_EMM_RSP_STS_RSP_BUSYBIT BIT_ULL(20)
#define MIO_EMM_RSP_STS_STP_TIMEOUT BIT_ULL(19)
#define MIO_EMM_RSP_STS_STP_CRC_ERR BIT_ULL(18)
#define MIO_EMM_RSP_STS_STP_BAD_STS BIT_ULL(17)
#define MIO_EMM_RSP_STS_STP_VAL BIT_ULL(16)
#define MIO_EMM_RSP_STS_RSP_TIMEOUT BIT_ULL(15)
#define MIO_EMM_RSP_STS_RSP_CRC_ERR BIT_ULL(14)
#define MIO_EMM_RSP_STS_RSP_BAD_STS BIT_ULL(13)
#define MIO_EMM_RSP_STS_RSP_VAL BIT_ULL(12)
#define MIO_EMM_RSP_STS_RSP_TYPE GENMASK_ULL(11, 9)
#define MIO_EMM_RSP_STS_CMD_TYPE GENMASK_ULL(8, 7)
#define MIO_EMM_RSP_STS_CMD_IDX GENMASK_ULL(6, 1)
#define MIO_EMM_RSP_STS_CMD_DONE BIT_ULL(0)
#define MIO_EMM_SAMPLE_CMD_CNT GENMASK_ULL(25, 16)
#define MIO_EMM_SAMPLE_DAT_CNT GENMASK_ULL(9, 0)
#define MIO_EMM_SWITCH_BUS_ID GENMASK_ULL(61, 60)
#define MIO_EMM_SWITCH_EXE BIT_ULL(59)
#define MIO_EMM_SWITCH_ERR0 BIT_ULL(58)
#define MIO_EMM_SWITCH_ERR1 BIT_ULL(57)
#define MIO_EMM_SWITCH_ERR2 BIT_ULL(56)
#define MIO_EMM_SWITCH_HS_TIMING BIT_ULL(48)
#define MIO_EMM_SWITCH_BUS_WIDTH GENMASK_ULL(42, 40)
#define MIO_EMM_SWITCH_POWER_CLASS GENMASK_ULL(35, 32)
#define MIO_EMM_SWITCH_CLK_HI GENMASK_ULL(31, 16)
#define MIO_EMM_SWITCH_CLK_LO GENMASK_ULL(15, 0)
/* Protoypes */
irqreturn_t cvm_mmc_interrupt(int irq, void *dev_id);
int cvm_mmc_of_slot_probe(struct device *dev, struct cvm_mmc_host *host);
int cvm_mmc_of_slot_remove(struct cvm_mmc_slot *slot);
extern const char *cvm_mmc_irq_names[];
#endif

14
drivers/mmc/host/davinci_mmc.c
View file

@ -478,18 +478,14 @@ static int mmc_davinci_start_dma_transfer(struct mmc_davinci_host *host,
int ret = 0;
host->sg_len = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
((data->flags & MMC_DATA_WRITE)
? DMA_TO_DEVICE
: DMA_FROM_DEVICE));
mmc_get_dma_dir(data));
/* no individual DMA segment should need a partial FIFO */
for (i = 0; i < host->sg_len; i++) {
if (sg_dma_len(data->sg + i) & mask) {
dma_unmap_sg(mmc_dev(host->mmc),
data->sg, data->sg_len,
(data->flags & MMC_DATA_WRITE)
? DMA_TO_DEVICE
: DMA_FROM_DEVICE);
data->sg, data->sg_len,
mmc_get_dma_dir(data));
return -1;
}
}
@ -802,9 +798,7 @@ mmc_davinci_xfer_done(struct mmc_davinci_host *host, struct mmc_data *data)
davinci_abort_dma(host);
dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
(data->flags & MMC_DATA_WRITE)
? DMA_TO_DEVICE
: DMA_FROM_DEVICE);
mmc_get_dma_dir(data));
host->do_dma = false;
}
host->data_dir = DAVINCI_MMC_DATADIR_NONE;

397
drivers/mmc/host/dw_mmc.c
View file

@ -19,6 +19,7 @@
#include <linux/err.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/iopoll.h>
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/platform_device.h>
@ -65,6 +66,8 @@
struct idmac_desc_64addr {
u32 des0; /* Control Descriptor */
#define IDMAC_OWN_CLR64(x) \
!((x) & cpu_to_le32(IDMAC_DES0_OWN))
u32 des1; /* Reserved */
@ -104,11 +107,6 @@ struct idmac_desc {
/* Each descriptor can transfer up to 4KB of data in chained mode */
#define DW_MCI_DESC_DATA_LENGTH 0x1000
static bool dw_mci_reset(struct dw_mci *host);
static bool dw_mci_ctrl_reset(struct dw_mci *host, u32 reset);
static int dw_mci_card_busy(struct mmc_host *mmc);
static int dw_mci_get_cd(struct mmc_host *mmc);
#if defined(CONFIG_DEBUG_FS)
static int dw_mci_req_show(struct seq_file *s, void *v)
{
@ -232,7 +230,66 @@ static void dw_mci_init_debugfs(struct dw_mci_slot *slot)
}
#endif /* defined(CONFIG_DEBUG_FS) */
static void mci_send_cmd(struct dw_mci_slot *slot, u32 cmd, u32 arg);
static bool dw_mci_ctrl_reset(struct dw_mci *host, u32 reset)
{
u32 ctrl;
ctrl = mci_readl(host, CTRL);
ctrl |= reset;
mci_writel(host, CTRL, ctrl);
/* wait till resets clear */
if (readl_poll_timeout_atomic(host->regs + SDMMC_CTRL, ctrl,
!(ctrl & reset),
1, 500 * USEC_PER_MSEC)) {
dev_err(host->dev,
"Timeout resetting block (ctrl reset %#x)\n",
ctrl & reset);
return false;
}
return true;
}
static void dw_mci_wait_while_busy(struct dw_mci *host, u32 cmd_flags)
{
u32 status;
/*
* Databook says that before issuing a new data transfer command
* we need to check to see if the card is busy. Data transfer commands
* all have SDMMC_CMD_PRV_DAT_WAIT set, so we'll key off that.
*
* ...also allow sending for SDMMC_CMD_VOLT_SWITCH where busy is
* expected.
*/
if ((cmd_flags & SDMMC_CMD_PRV_DAT_WAIT) &&
!(cmd_flags & SDMMC_CMD_VOLT_SWITCH)) {
if (readl_poll_timeout_atomic(host->regs + SDMMC_STATUS,
status,
!(status & SDMMC_STATUS_BUSY),
10, 500 * USEC_PER_MSEC))
dev_err(host->dev, "Busy; trying anyway\n");
}
}
static void mci_send_cmd(struct dw_mci_slot *slot, u32 cmd, u32 arg)
{
struct dw_mci *host = slot->host;
unsigned int cmd_status = 0;
mci_writel(host, CMDARG, arg);
wmb(); /* drain writebuffer */
dw_mci_wait_while_busy(host, cmd);
mci_writel(host, CMD, SDMMC_CMD_START | cmd);
if (readl_poll_timeout_atomic(host->regs + SDMMC_CMD, cmd_status,
!(cmd_status & SDMMC_CMD_START),
1, 500 * USEC_PER_MSEC))
dev_err(&slot->mmc->class_dev,
"Timeout sending command (cmd %#x arg %#x status %#x)\n",
cmd, arg, cmd_status);
}
static u32 dw_mci_prepare_command(struct mmc_host *mmc, struct mmc_command *cmd)
{
@ -341,31 +398,6 @@ static u32 dw_mci_prep_stop_abort(struct dw_mci *host, struct mmc_command *cmd)
return cmdr;
}
static void dw_mci_wait_while_busy(struct dw_mci *host, u32 cmd_flags)
{
unsigned long timeout = jiffies + msecs_to_jiffies(500);
/*
* Databook says that before issuing a new data transfer command
* we need to check to see if the card is busy. Data transfer commands
* all have SDMMC_CMD_PRV_DAT_WAIT set, so we'll key off that.
*
* ...also allow sending for SDMMC_CMD_VOLT_SWITCH where busy is
* expected.
*/
if ((cmd_flags & SDMMC_CMD_PRV_DAT_WAIT) &&
!(cmd_flags & SDMMC_CMD_VOLT_SWITCH)) {
while (mci_readl(host, STATUS) & SDMMC_STATUS_BUSY) {
if (time_after(jiffies, timeout)) {
/* Command will fail; we'll pass error then */
dev_err(host->dev, "Busy; trying anyway\n");
break;
}
udelay(10);
}
}
}
static void dw_mci_start_command(struct dw_mci *host,
struct mmc_command *cmd, u32 cmd_flags)
{
@ -400,14 +432,6 @@ static void dw_mci_stop_dma(struct dw_mci *host)
set_bit(EVENT_XFER_COMPLETE, &host->pending_events);
}
static int dw_mci_get_dma_dir(struct mmc_data *data)
{
if (data->flags & MMC_DATA_WRITE)
return DMA_TO_DEVICE;
else
return DMA_FROM_DEVICE;
}
static void dw_mci_dma_cleanup(struct dw_mci *host)
{
struct mmc_data *data = host->data;
@ -416,7 +440,7 @@ static void dw_mci_dma_cleanup(struct dw_mci *host)
dma_unmap_sg(host->dev,
data->sg,
data->sg_len,
dw_mci_get_dma_dir(data));
mmc_get_dma_dir(data));
data->host_cookie = COOKIE_UNMAPPED;
}
}
@ -555,7 +579,7 @@ static inline int dw_mci_prepare_desc64(struct dw_mci *host,
{
unsigned int desc_len;
struct idmac_desc_64addr *desc_first, *desc_last, *desc;
unsigned long timeout;
u32 val;
int i;
desc_first = desc_last = desc = host->sg_cpu;
@ -577,12 +601,10 @@ static inline int dw_mci_prepare_desc64(struct dw_mci *host,
* isn't still owned by IDMAC as IDMAC's write
* ops and CPU's read ops are asynchronous.
*/
timeout = jiffies + msecs_to_jiffies(100);
while (readl(&desc->des0) & IDMAC_DES0_OWN) {
if (time_after(jiffies, timeout))
goto err_own_bit;
udelay(10);
}
if (readl_poll_timeout_atomic(&desc->des0, val,
!(val & IDMAC_DES0_OWN),
10, 100 * USEC_PER_MSEC))
goto err_own_bit;
/*
* Set the OWN bit and disable interrupts
@ -629,7 +651,7 @@ static inline int dw_mci_prepare_desc32(struct dw_mci *host,
{
unsigned int desc_len;
struct idmac_desc *desc_first, *desc_last, *desc;
unsigned long timeout;
u32 val;
int i;
desc_first = desc_last = desc = host->sg_cpu;
@ -651,13 +673,11 @@ static inline int dw_mci_prepare_desc32(struct dw_mci *host,
* isn't still owned by IDMAC as IDMAC's write
* ops and CPU's read ops are asynchronous.
*/
timeout = jiffies + msecs_to_jiffies(100);
while (readl(&desc->des0) &
cpu_to_le32(IDMAC_DES0_OWN)) {
if (time_after(jiffies, timeout))
goto err_own_bit;
udelay(10);
}
if (readl_poll_timeout_atomic(&desc->des0, val,
IDMAC_OWN_CLR64(val),
10,
100 * USEC_PER_MSEC))
goto err_own_bit;
/*
* Set the OWN bit and disable interrupts
@ -876,7 +896,7 @@ static int dw_mci_pre_dma_transfer(struct dw_mci *host,
sg_len = dma_map_sg(host->dev,
data->sg,
data->sg_len,
dw_mci_get_dma_dir(data));
mmc_get_dma_dir(data));
if (sg_len == 0)
return -EINVAL;
@ -916,10 +936,51 @@ static void dw_mci_post_req(struct mmc_host *mmc,
dma_unmap_sg(slot->host->dev,
data->sg,
data->sg_len,
dw_mci_get_dma_dir(data));
mmc_get_dma_dir(data));
data->host_cookie = COOKIE_UNMAPPED;
}
static int dw_mci_get_cd(struct mmc_host *mmc)
{
int present;
struct dw_mci_slot *slot = mmc_priv(mmc);
struct dw_mci *host = slot->host;
int gpio_cd = mmc_gpio_get_cd(mmc);
/* Use platform get_cd function, else try onboard card detect */
if (((mmc->caps & MMC_CAP_NEEDS_POLL)
|| !mmc_card_is_removable(mmc))) {
present = 1;
if (!test_bit(DW_MMC_CARD_PRESENT, &slot->flags)) {
if (mmc->caps & MMC_CAP_NEEDS_POLL) {
dev_info(&mmc->class_dev,
"card is polling.\n");
} else {
dev_info(&mmc->class_dev,
"card is non-removable.\n");
}
set_bit(DW_MMC_CARD_PRESENT, &slot->flags);
}
return present;
} else if (gpio_cd >= 0)
present = gpio_cd;
else
present = (mci_readl(slot->host, CDETECT) & (1 << slot->id))
== 0 ? 1 : 0;
spin_lock_bh(&host->lock);
if (present && !test_and_set_bit(DW_MMC_CARD_PRESENT, &slot->flags))
dev_dbg(&mmc->class_dev, "card is present\n");
else if (!present &&
!test_and_clear_bit(DW_MMC_CARD_PRESENT, &slot->flags))
dev_dbg(&mmc->class_dev, "card is not present\n");
spin_unlock_bh(&host->lock);
return present;
}
static void dw_mci_adjust_fifoth(struct dw_mci *host, struct mmc_data *data)
{
unsigned int blksz = data->blksz;
@ -1133,27 +1194,6 @@ static void dw_mci_submit_data(struct dw_mci *host, struct mmc_data *data)
}
}
static void mci_send_cmd(struct dw_mci_slot *slot, u32 cmd, u32 arg)
{
struct dw_mci *host = slot->host;
unsigned long timeout = jiffies + msecs_to_jiffies(500);
unsigned int cmd_status = 0;
mci_writel(host, CMDARG, arg);
wmb(); /* drain writebuffer */
dw_mci_wait_while_busy(host, cmd);
mci_writel(host, CMD, SDMMC_CMD_START | cmd);
while (time_before(jiffies, timeout)) {
cmd_status = mci_readl(host, CMD);
if (!(cmd_status & SDMMC_CMD_START))
return;
}
dev_err(&slot->mmc->class_dev,
"Timeout sending command (cmd %#x arg %#x status %#x)\n",
cmd, arg, cmd_status);
}
static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit)
{
struct dw_mci *host = slot->host;
@ -1534,47 +1574,6 @@ static int dw_mci_get_ro(struct mmc_host *mmc)
return read_only;
}
static int dw_mci_get_cd(struct mmc_host *mmc)
{
int present;
struct dw_mci_slot *slot = mmc_priv(mmc);
struct dw_mci *host = slot->host;
int gpio_cd = mmc_gpio_get_cd(mmc);
/* Use platform get_cd function, else try onboard card detect */
if (((mmc->caps & MMC_CAP_NEEDS_POLL)
|| !mmc_card_is_removable(mmc))) {
present = 1;
if (!test_bit(DW_MMC_CARD_PRESENT, &slot->flags)) {
if (mmc->caps & MMC_CAP_NEEDS_POLL) {
dev_info(&mmc->class_dev,
"card is polling.\n");
} else {
dev_info(&mmc->class_dev,
"card is non-removable.\n");
}
set_bit(DW_MMC_CARD_PRESENT, &slot->flags);
}
return present;
} else if (gpio_cd >= 0)
present = gpio_cd;
else
present = (mci_readl(slot->host, CDETECT) & (1 << slot->id))
== 0 ? 1 : 0;
spin_lock_bh(&host->lock);
if (present && !test_and_set_bit(DW_MMC_CARD_PRESENT, &slot->flags))
dev_dbg(&mmc->class_dev, "card is present\n");
else if (!present &&
!test_and_clear_bit(DW_MMC_CARD_PRESENT, &slot->flags))
dev_dbg(&mmc->class_dev, "card is not present\n");
spin_unlock_bh(&host->lock);
return present;
}
static void dw_mci_hw_reset(struct mmc_host *mmc)
{
struct dw_mci_slot *slot = mmc_priv(mmc);
@ -1688,6 +1687,73 @@ static int dw_mci_prepare_hs400_tuning(struct mmc_host *mmc,
return 0;
}
static bool dw_mci_reset(struct dw_mci *host)
{
u32 flags = SDMMC_CTRL_RESET | SDMMC_CTRL_FIFO_RESET;
bool ret = false;
u32 status = 0;
/*
* Resetting generates a block interrupt, hence setting
* the scatter-gather pointer to NULL.
*/
if (host->sg) {
sg_miter_stop(&host->sg_miter);
host->sg = NULL;
}
if (host->use_dma)
flags |= SDMMC_CTRL_DMA_RESET;
if (dw_mci_ctrl_reset(host, flags)) {
/*
* In all cases we clear the RAWINTS
* register to clear any interrupts.
*/
mci_writel(host, RINTSTS, 0xFFFFFFFF);
if (!host->use_dma) {
ret = true;
goto ciu_out;
}
/* Wait for dma_req to be cleared */
if (readl_poll_timeout_atomic(host->regs + SDMMC_STATUS,
status,
!(status & SDMMC_STATUS_DMA_REQ),
1, 500 * USEC_PER_MSEC)) {
dev_err(host->dev,
"%s: Timeout waiting for dma_req to be cleared\n",
__func__);
goto ciu_out;
}
/* when using DMA next we reset the fifo again */
if (!dw_mci_ctrl_reset(host, SDMMC_CTRL_FIFO_RESET))
goto ciu_out;
} else {
/* if the controller reset bit did clear, then set clock regs */
if (!(mci_readl(host, CTRL) & SDMMC_CTRL_RESET)) {
dev_err(host->dev,
"%s: fifo/dma reset bits didn't clear but ciu was reset, doing clock update\n",
__func__);
goto ciu_out;
}
}
if (host->use_dma == TRANS_MODE_IDMAC)
/* It is also recommended that we reset and reprogram idmac */
dw_mci_idmac_reset(host);
ret = true;
ciu_out:
/* After a CTRL reset we need to have CIU set clock registers */
mci_send_cmd(host->cur_slot, SDMMC_CMD_UPD_CLK, 0);
return ret;
}
static const struct mmc_host_ops dw_mci_ops = {
.request = dw_mci_request,
.pre_req = dw_mci_pre_req,
@ -2830,99 +2896,6 @@ static void dw_mci_init_dma(struct dw_mci *host)
host->use_dma = TRANS_MODE_PIO;
}
static bool dw_mci_ctrl_reset(struct dw_mci *host, u32 reset)
{
unsigned long timeout = jiffies + msecs_to_jiffies(500);
u32 ctrl;
ctrl = mci_readl(host, CTRL);
ctrl |= reset;
mci_writel(host, CTRL, ctrl);
/* wait till resets clear */
do {
ctrl = mci_readl(host, CTRL);
if (!(ctrl & reset))
return true;
} while (time_before(jiffies, timeout));
dev_err(host->dev,
"Timeout resetting block (ctrl reset %#x)\n",
ctrl & reset);
return false;
}
static bool dw_mci_reset(struct dw_mci *host)
{
u32 flags = SDMMC_CTRL_RESET | SDMMC_CTRL_FIFO_RESET;
bool ret = false;
/*
* Reseting generates a block interrupt, hence setting
* the scatter-gather pointer to NULL.
*/
if (host->sg) {
sg_miter_stop(&host->sg_miter);
host->sg = NULL;
}
if (host->use_dma)
flags |= SDMMC_CTRL_DMA_RESET;
if (dw_mci_ctrl_reset(host, flags)) {
/*
* In all cases we clear the RAWINTS register to clear any
* interrupts.
*/
mci_writel(host, RINTSTS, 0xFFFFFFFF);
/* if using dma we wait for dma_req to clear */
if (host->use_dma) {
unsigned long timeout = jiffies + msecs_to_jiffies(500);
u32 status;
do {
status = mci_readl(host, STATUS);
if (!(status & SDMMC_STATUS_DMA_REQ))
break;
cpu_relax();
} while (time_before(jiffies, timeout));
if (status & SDMMC_STATUS_DMA_REQ) {
dev_err(host->dev,
"%s: Timeout waiting for dma_req to clear during reset\n",
__func__);
goto ciu_out;
}
/* when using DMA next we reset the fifo again */
if (!dw_mci_ctrl_reset(host, SDMMC_CTRL_FIFO_RESET))
goto ciu_out;
}
} else {
/* if the controller reset bit did clear, then set clock regs */
if (!(mci_readl(host, CTRL) & SDMMC_CTRL_RESET)) {
dev_err(host->dev,
"%s: fifo/dma reset bits didn't clear but ciu was reset, doing clock update\n",
__func__);
goto ciu_out;
}
}
if (host->use_dma == TRANS_MODE_IDMAC)
/* It is also recommended that we reset and reprogram idmac */
dw_mci_idmac_reset(host);
ret = true;
ciu_out:
/* After a CTRL reset we need to have CIU set clock registers */
mci_send_cmd(host->cur_slot, SDMMC_CMD_UPD_CLK, 0);
return ret;
}
static void dw_mci_cmd11_timer(unsigned long arg)
{
struct dw_mci *host = (struct dw_mci *)arg;

9
drivers/mmc/host/jz4740_mmc.c
View file

@ -200,11 +200,6 @@ static int jz4740_mmc_acquire_dma_channels(struct jz4740_mmc_host *host)
return -ENODEV;
}
static inline int jz4740_mmc_get_dma_dir(struct mmc_data *data)
{
return (data->flags & MMC_DATA_READ) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
}
static inline struct dma_chan *jz4740_mmc_get_dma_chan(struct jz4740_mmc_host *host,
struct mmc_data *data)
{
@ -215,7 +210,7 @@ static void jz4740_mmc_dma_unmap(struct jz4740_mmc_host *host,
struct mmc_data *data)
{
struct dma_chan *chan = jz4740_mmc_get_dma_chan(host, data);
enum dma_data_direction dir = jz4740_mmc_get_dma_dir(data);
enum dma_data_direction dir = mmc_get_dma_dir(data);
dma_unmap_sg(chan->device->dev, data->sg, data->sg_len, dir);
}
@ -227,7 +222,7 @@ static int jz4740_mmc_prepare_dma_data(struct jz4740_mmc_host *host,
struct dma_chan *chan)
{
struct jz4740_mmc_host_next *next_data = &host->next_data;
enum dma_data_direction dir = jz4740_mmc_get_dma_dir(data);
enum dma_data_direction dir = mmc_get_dma_dir(data);
int sg_len;
if (!next && data->host_cookie &&

650
drivers/mmc/host/meson-gx-mmc.c
View file

@ -36,23 +36,21 @@
#include <linux/clk-provider.h>
#include <linux/regulator/consumer.h>
#include <linux/interrupt.h>
#include <linux/bitfield.h>
#define DRIVER_NAME "meson-gx-mmc"
#define SD_EMMC_CLOCK 0x0
#define CLK_DIV_SHIFT 0
#define CLK_DIV_WIDTH 6
#define CLK_DIV_MASK 0x3f
#define CLK_DIV_MASK GENMASK(5, 0)
#define CLK_DIV_MAX 63
#define CLK_SRC_SHIFT 6
#define CLK_SRC_WIDTH 2
#define CLK_SRC_MASK 0x3
#define CLK_SRC_MASK GENMASK(7, 6)
#define CLK_SRC_XTAL 0 /* external crystal */
#define CLK_SRC_XTAL_RATE 24000000
#define CLK_SRC_PLL 1 /* FCLK_DIV2 */
#define CLK_SRC_PLL_RATE 1000000000
#define CLK_PHASE_SHIFT 8
#define CLK_PHASE_MASK 0x3
#define CLK_CORE_PHASE_MASK GENMASK(9, 8)
#define CLK_TX_PHASE_MASK GENMASK(11, 10)
#define CLK_RX_PHASE_MASK GENMASK(13, 12)
#define CLK_PHASE_0 0
#define CLK_PHASE_90 1
#define CLK_PHASE_180 2
@ -65,22 +63,17 @@
#define SD_EMMC_START 0x40
#define START_DESC_INIT BIT(0)
#define START_DESC_BUSY BIT(1)
#define START_DESC_ADDR_SHIFT 2
#define START_DESC_ADDR_MASK (~0x3)
#define START_DESC_ADDR_MASK GENMASK(31, 2)
#define SD_EMMC_CFG 0x44
#define CFG_BUS_WIDTH_SHIFT 0
#define CFG_BUS_WIDTH_MASK 0x3
#define CFG_BUS_WIDTH_MASK GENMASK(1, 0)
#define CFG_BUS_WIDTH_1 0x0
#define CFG_BUS_WIDTH_4 0x1
#define CFG_BUS_WIDTH_8 0x2
#define CFG_DDR BIT(2)
#define CFG_BLK_LEN_SHIFT 4
#define CFG_BLK_LEN_MASK 0xf
#define CFG_RESP_TIMEOUT_SHIFT 8
#define CFG_RESP_TIMEOUT_MASK 0xf
#define CFG_RC_CC_SHIFT 12
#define CFG_RC_CC_MASK 0xf
#define CFG_BLK_LEN_MASK GENMASK(7, 4)
#define CFG_RESP_TIMEOUT_MASK GENMASK(11, 8)
#define CFG_RC_CC_MASK GENMASK(15, 12)
#define CFG_STOP_CLOCK BIT(22)
#define CFG_CLK_ALWAYS_ON BIT(18)
#define CFG_CHK_DS BIT(20)
@ -90,9 +83,8 @@
#define STATUS_BUSY BIT(31)
#define SD_EMMC_IRQ_EN 0x4c
#define IRQ_EN_MASK 0x3fff
#define IRQ_RXD_ERR_SHIFT 0
#define IRQ_RXD_ERR_MASK 0xff
#define IRQ_EN_MASK GENMASK(13, 0)
#define IRQ_RXD_ERR_MASK GENMASK(7, 0)
#define IRQ_TXD_ERR BIT(8)
#define IRQ_DESC_ERR BIT(9)
#define IRQ_RESP_ERR BIT(10)
@ -116,33 +108,20 @@
#define SD_EMMC_CFG_BLK_SIZE 512 /* internal buffer max: 512 bytes */
#define SD_EMMC_CFG_RESP_TIMEOUT 256 /* in clock cycles */
#define SD_EMMC_CMD_TIMEOUT 1024 /* in ms */
#define SD_EMMC_CMD_TIMEOUT_DATA 4096 /* in ms */
#define SD_EMMC_CFG_CMD_GAP 16 /* in clock cycles */
#define SD_EMMC_DESC_BUF_LEN PAGE_SIZE
#define SD_EMMC_PRE_REQ_DONE BIT(0)
#define SD_EMMC_DESC_CHAIN_MODE BIT(1)
#define MUX_CLK_NUM_PARENTS 2
struct meson_host {
struct device *dev;
struct mmc_host *mmc;
struct mmc_request *mrq;
struct mmc_command *cmd;
spinlock_t lock;
void __iomem *regs;
int irq;
u32 ocr_mask;
struct clk *core_clk;
struct clk_mux mux;
struct clk *mux_clk;
struct clk *mux_parent[MUX_CLK_NUM_PARENTS];
unsigned long current_clock;
struct clk_divider cfg_div;
struct clk *cfg_div_clk;
unsigned int bounce_buf_size;
void *bounce_buf;
dma_addr_t bounce_dma_addr;
bool vqmmc_enabled;
struct meson_tuning_params {
u8 core_phase;
u8 tx_phase;
u8 rx_phase;
};
struct sd_emmc_desc {
@ -151,13 +130,37 @@ struct sd_emmc_desc {
u32 cmd_data;
u32 cmd_resp;
};
#define CMD_CFG_LENGTH_SHIFT 0
#define CMD_CFG_LENGTH_MASK 0x1ff
struct meson_host {
struct device *dev;
struct mmc_host *mmc;
struct mmc_command *cmd;
spinlock_t lock;
void __iomem *regs;
struct clk *core_clk;
struct clk_mux mux;
struct clk *mux_clk;
unsigned long current_clock;
struct clk_divider cfg_div;
struct clk *cfg_div_clk;
unsigned int bounce_buf_size;
void *bounce_buf;
dma_addr_t bounce_dma_addr;
struct sd_emmc_desc *descs;
dma_addr_t descs_dma_addr;
struct meson_tuning_params tp;
bool vqmmc_enabled;
};
#define CMD_CFG_LENGTH_MASK GENMASK(8, 0)
#define CMD_CFG_BLOCK_MODE BIT(9)
#define CMD_CFG_R1B BIT(10)
#define CMD_CFG_END_OF_CHAIN BIT(11)
#define CMD_CFG_TIMEOUT_SHIFT 12
#define CMD_CFG_TIMEOUT_MASK 0xf
#define CMD_CFG_TIMEOUT_MASK GENMASK(15, 12)
#define CMD_CFG_NO_RESP BIT(16)
#define CMD_CFG_NO_CMD BIT(17)
#define CMD_CFG_DATA_IO BIT(18)
@ -166,17 +169,99 @@ struct sd_emmc_desc {
#define CMD_CFG_RESP_128 BIT(21)
#define CMD_CFG_RESP_NUM BIT(22)
#define CMD_CFG_DATA_NUM BIT(23)
#define CMD_CFG_CMD_INDEX_SHIFT 24
#define CMD_CFG_CMD_INDEX_MASK 0x3f
#define CMD_CFG_CMD_INDEX_MASK GENMASK(29, 24)
#define CMD_CFG_ERROR BIT(30)
#define CMD_CFG_OWNER BIT(31)
#define CMD_DATA_MASK (~0x3)
#define CMD_DATA_MASK GENMASK(31, 2)
#define CMD_DATA_BIG_ENDIAN BIT(1)
#define CMD_DATA_SRAM BIT(0)
#define CMD_RESP_MASK (~0x1)
#define CMD_RESP_MASK GENMASK(31, 1)
#define CMD_RESP_SRAM BIT(0)
static unsigned int meson_mmc_get_timeout_msecs(struct mmc_data *data)
{
unsigned int timeout = data->timeout_ns / NSEC_PER_MSEC;
if (!timeout)
return SD_EMMC_CMD_TIMEOUT_DATA;
timeout = roundup_pow_of_two(timeout);
return min(timeout, 32768U); /* max. 2^15 ms */
}
static struct mmc_command *meson_mmc_get_next_command(struct mmc_command *cmd)
{
if (cmd->opcode == MMC_SET_BLOCK_COUNT && !cmd->error)
return cmd->mrq->cmd;
else if (mmc_op_multi(cmd->opcode) &&
(!cmd->mrq->sbc || cmd->error || cmd->data->error))
return cmd->mrq->stop;
else
return NULL;
}
static void meson_mmc_get_transfer_mode(struct mmc_host *mmc,
struct mmc_request *mrq)
{
struct mmc_data *data = mrq->data;
struct scatterlist *sg;
int i;
bool use_desc_chain_mode = true;
for_each_sg(data->sg, sg, data->sg_len, i)
/* check for 8 byte alignment */
if (sg->offset & 7) {
WARN_ONCE(1, "unaligned scatterlist buffer\n");
use_desc_chain_mode = false;
break;
}
if (use_desc_chain_mode)
data->host_cookie |= SD_EMMC_DESC_CHAIN_MODE;
}
static inline bool meson_mmc_desc_chain_mode(const struct mmc_data *data)
{
return data->host_cookie & SD_EMMC_DESC_CHAIN_MODE;
}
static inline bool meson_mmc_bounce_buf_read(const struct mmc_data *data)
{
return data && data->flags & MMC_DATA_READ &&
!meson_mmc_desc_chain_mode(data);
}
static void meson_mmc_pre_req(struct mmc_host *mmc, struct mmc_request *mrq)
{
struct mmc_data *data = mrq->data;
if (!data)
return;
meson_mmc_get_transfer_mode(mmc, mrq);
data->host_cookie |= SD_EMMC_PRE_REQ_DONE;
if (!meson_mmc_desc_chain_mode(data))
return;
data->sg_count = dma_map_sg(mmc_dev(mmc), data->sg, data->sg_len,
mmc_get_dma_dir(data));
if (!data->sg_count)
dev_err(mmc_dev(mmc), "dma_map_sg failed");
}
static void meson_mmc_post_req(struct mmc_host *mmc, struct mmc_request *mrq,
int err)
{
struct mmc_data *data = mrq->data;
if (data && meson_mmc_desc_chain_mode(data) && data->sg_count)
dma_unmap_sg(mmc_dev(mmc), data->sg, data->sg_len,
mmc_get_dma_dir(data));
}
static int meson_mmc_clk_set(struct meson_host *host, unsigned long clk_rate)
{
struct mmc_host *mmc = host->mmc;
@ -244,26 +329,23 @@ static int meson_mmc_clk_init(struct meson_host *host)
char clk_name[32];
int i, ret = 0;
const char *mux_parent_names[MUX_CLK_NUM_PARENTS];
unsigned int mux_parent_count = 0;
const char *clk_div_parents[1];
u32 clk_reg, cfg;
/* get the mux parents */
for (i = 0; i < MUX_CLK_NUM_PARENTS; i++) {
struct clk *clk;
char name[16];
snprintf(name, sizeof(name), "clkin%d", i);
host->mux_parent[i] = devm_clk_get(host->dev, name);
if (IS_ERR(host->mux_parent[i])) {
ret = PTR_ERR(host->mux_parent[i]);
if (PTR_ERR(host->mux_parent[i]) != -EPROBE_DEFER)
clk = devm_clk_get(host->dev, name);
if (IS_ERR(clk)) {
if (clk != ERR_PTR(-EPROBE_DEFER))
dev_err(host->dev, "Missing clock %s\n", name);
host->mux_parent[i] = NULL;
return ret;
return PTR_ERR(clk);
}
mux_parent_names[i] = __clk_get_name(host->mux_parent[i]);
mux_parent_count++;
mux_parent_names[i] = __clk_get_name(clk);
}
/* create the mux */
@ -272,10 +354,9 @@ static int meson_mmc_clk_init(struct meson_host *host)
init.ops = &clk_mux_ops;
init.flags = 0;
init.parent_names = mux_parent_names;
init.num_parents = mux_parent_count;
init.num_parents = MUX_CLK_NUM_PARENTS;
host->mux.reg = host->regs + SD_EMMC_CLOCK;
host->mux.shift = CLK_SRC_SHIFT;
host->mux.shift = __bf_shf(CLK_SRC_MASK);
host->mux.mask = CLK_SRC_MASK;
host->mux.flags = 0;
host->mux.table = NULL;
@ -287,7 +368,7 @@ static int meson_mmc_clk_init(struct meson_host *host)
/* create the divider */
snprintf(clk_name, sizeof(clk_name), "%s#div", dev_name(host->dev));
init.name = devm_kstrdup(host->dev, clk_name, GFP_KERNEL);
init.name = clk_name;
init.ops = &clk_divider_ops;
init.flags = CLK_SET_RATE_PARENT;
clk_div_parents[0] = __clk_get_name(host->mux_clk);
@ -295,8 +376,8 @@ static int meson_mmc_clk_init(struct meson_host *host)
init.num_parents = ARRAY_SIZE(clk_div_parents);
host->cfg_div.reg = host->regs + SD_EMMC_CLOCK;
host->cfg_div.shift = CLK_DIV_SHIFT;
host->cfg_div.width = CLK_DIV_WIDTH;
host->cfg_div.shift = __bf_shf(CLK_DIV_MASK);
host->cfg_div.width = __builtin_popcountl(CLK_DIV_MASK);
host->cfg_div.hw.init = &init;
host->cfg_div.flags = CLK_DIVIDER_ONE_BASED |
CLK_DIVIDER_ROUND_CLOSEST | CLK_DIVIDER_ALLOW_ZERO;
@ -307,9 +388,11 @@ static int meson_mmc_clk_init(struct meson_host *host)
/* init SD_EMMC_CLOCK to sane defaults w/min clock rate */
clk_reg = 0;
clk_reg |= CLK_PHASE_180 << CLK_PHASE_SHIFT;
clk_reg |= CLK_SRC_XTAL << CLK_SRC_SHIFT;
clk_reg |= CLK_DIV_MAX << CLK_DIV_SHIFT;
clk_reg |= FIELD_PREP(CLK_CORE_PHASE_MASK, host->tp.core_phase);
clk_reg |= FIELD_PREP(CLK_TX_PHASE_MASK, host->tp.tx_phase);
clk_reg |= FIELD_PREP(CLK_RX_PHASE_MASK, host->tp.rx_phase);
clk_reg |= FIELD_PREP(CLK_SRC_MASK, CLK_SRC_XTAL);
clk_reg |= FIELD_PREP(CLK_DIV_MASK, CLK_DIV_MAX);
clk_reg &= ~CLK_ALWAYS_ON;
writel(clk_reg, host->regs + SD_EMMC_CLOCK);
@ -327,12 +410,37 @@ static int meson_mmc_clk_init(struct meson_host *host)
host->mmc->f_min = clk_round_rate(host->cfg_div_clk, 400000);
ret = meson_mmc_clk_set(host, host->mmc->f_min);
if (!ret)
if (ret)
clk_disable_unprepare(host->cfg_div_clk);
return ret;
}
static void meson_mmc_set_tuning_params(struct mmc_host *mmc)
{
struct meson_host *host = mmc_priv(mmc);
u32 regval;
/* stop clock */
regval = readl(host->regs + SD_EMMC_CFG);
regval |= CFG_STOP_CLOCK;
writel(regval, host->regs + SD_EMMC_CFG);
regval = readl(host->regs + SD_EMMC_CLOCK);
regval &= ~CLK_CORE_PHASE_MASK;
regval |= FIELD_PREP(CLK_CORE_PHASE_MASK, host->tp.core_phase);
regval &= ~CLK_TX_PHASE_MASK;
regval |= FIELD_PREP(CLK_TX_PHASE_MASK, host->tp.tx_phase);
regval &= ~CLK_RX_PHASE_MASK;
regval |= FIELD_PREP(CLK_RX_PHASE_MASK, host->tp.rx_phase);
writel(regval, host->regs + SD_EMMC_CLOCK);
/* start clock */
regval = readl(host->regs + SD_EMMC_CFG);
regval &= ~CFG_STOP_CLOCK;
writel(regval, host->regs + SD_EMMC_CFG);
}
static void meson_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct meson_host *host = mmc_priv(mmc);
@ -397,17 +505,8 @@ static void meson_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
val = readl(host->regs + SD_EMMC_CFG);
orig = val;
val &= ~(CFG_BUS_WIDTH_MASK << CFG_BUS_WIDTH_SHIFT);
val |= bus_width << CFG_BUS_WIDTH_SHIFT;
val &= ~(CFG_BLK_LEN_MASK << CFG_BLK_LEN_SHIFT);
val |= ilog2(SD_EMMC_CFG_BLK_SIZE) << CFG_BLK_LEN_SHIFT;
val &= ~(CFG_RESP_TIMEOUT_MASK << CFG_RESP_TIMEOUT_SHIFT);
val |= ilog2(SD_EMMC_CFG_RESP_TIMEOUT) << CFG_RESP_TIMEOUT_SHIFT;
val &= ~(CFG_RC_CC_MASK << CFG_RC_CC_SHIFT);
val |= ilog2(SD_EMMC_CFG_CMD_GAP) << CFG_RC_CC_SHIFT;
val &= ~CFG_BUS_WIDTH_MASK;
val |= FIELD_PREP(CFG_BUS_WIDTH_MASK, bus_width);
val &= ~CFG_DDR;
if (ios->timing == MMC_TIMING_UHS_DDR50 ||
@ -419,149 +518,189 @@ static void meson_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
if (ios->timing == MMC_TIMING_MMC_HS400)
val |= CFG_CHK_DS;
writel(val, host->regs + SD_EMMC_CFG);
if (val != orig)
if (val != orig) {
writel(val, host->regs + SD_EMMC_CFG);
dev_dbg(host->dev, "%s: SD_EMMC_CFG: 0x%08x -> 0x%08x\n",
__func__, orig, val);
}
}
static int meson_mmc_request_done(struct mmc_host *mmc, struct mmc_request *mrq)
static void meson_mmc_request_done(struct mmc_host *mmc,
struct mmc_request *mrq)
{
struct meson_host *host = mmc_priv(mmc);
WARN_ON(host->mrq != mrq);
host->mrq = NULL;
host->cmd = NULL;
mmc_request_done(host->mmc, mrq);
}
return 0;
static void meson_mmc_set_blksz(struct mmc_host *mmc, unsigned int blksz)
{
struct meson_host *host = mmc_priv(mmc);
u32 cfg, blksz_old;
cfg = readl(host->regs + SD_EMMC_CFG);
blksz_old = FIELD_GET(CFG_BLK_LEN_MASK, cfg);
if (!is_power_of_2(blksz))
dev_err(host->dev, "blksz %u is not a power of 2\n", blksz);
blksz = ilog2(blksz);
/* check if block-size matches, if not update */
if (blksz == blksz_old)
return;
dev_dbg(host->dev, "%s: update blk_len %d -> %d\n", __func__,
blksz_old, blksz);
cfg &= ~CFG_BLK_LEN_MASK;
cfg |= FIELD_PREP(CFG_BLK_LEN_MASK, blksz);
writel(cfg, host->regs + SD_EMMC_CFG);
}
static void meson_mmc_set_response_bits(struct mmc_command *cmd, u32 *cmd_cfg)
{
if (cmd->flags & MMC_RSP_PRESENT) {
if (cmd->flags & MMC_RSP_136)
*cmd_cfg |= CMD_CFG_RESP_128;
*cmd_cfg |= CMD_CFG_RESP_NUM;
if (!(cmd->flags & MMC_RSP_CRC))
*cmd_cfg |= CMD_CFG_RESP_NOCRC;
if (cmd->flags & MMC_RSP_BUSY)
*cmd_cfg |= CMD_CFG_R1B;
} else {
*cmd_cfg |= CMD_CFG_NO_RESP;
}
}
static void meson_mmc_desc_chain_transfer(struct mmc_host *mmc, u32 cmd_cfg)
{
struct meson_host *host = mmc_priv(mmc);
struct sd_emmc_desc *desc = host->descs;
struct mmc_data *data = host->cmd->data;
struct scatterlist *sg;
u32 start;
int i;
if (data->flags & MMC_DATA_WRITE)
cmd_cfg |= CMD_CFG_DATA_WR;
if (data->blocks > 1) {
cmd_cfg |= CMD_CFG_BLOCK_MODE;
meson_mmc_set_blksz(mmc, data->blksz);
}
for_each_sg(data->sg, sg, data->sg_count, i) {
unsigned int len = sg_dma_len(sg);
if (data->blocks > 1)
len /= data->blksz;
desc[i].cmd_cfg = cmd_cfg;
desc[i].cmd_cfg |= FIELD_PREP(CMD_CFG_LENGTH_MASK, len);
if (i > 0)
desc[i].cmd_cfg |= CMD_CFG_NO_CMD;
desc[i].cmd_arg = host->cmd->arg;
desc[i].cmd_resp = 0;
desc[i].cmd_data = sg_dma_address(sg);
}
desc[data->sg_count - 1].cmd_cfg |= CMD_CFG_END_OF_CHAIN;
dma_wmb(); /* ensure descriptor is written before kicked */
start = host->descs_dma_addr | START_DESC_BUSY;
writel(start, host->regs + SD_EMMC_START);
}
static void meson_mmc_start_cmd(struct mmc_host *mmc, struct mmc_command *cmd)
{
struct meson_host *host = mmc_priv(mmc);
struct sd_emmc_desc *desc, desc_tmp;
u32 cfg;
u8 blk_len, cmd_cfg_timeout;
struct mmc_data *data = cmd->data;
u32 cmd_cfg = 0, cmd_data = 0;
unsigned int xfer_bytes = 0;
/* Setup descriptors */
dma_rmb();
desc = &desc_tmp;
memset(desc, 0, sizeof(struct sd_emmc_desc));
desc->cmd_cfg |= (cmd->opcode & CMD_CFG_CMD_INDEX_MASK) <<
CMD_CFG_CMD_INDEX_SHIFT;
desc->cmd_cfg |= CMD_CFG_OWNER; /* owned by CPU */
desc->cmd_arg = cmd->arg;
/* Response */
if (cmd->flags & MMC_RSP_PRESENT) {
desc->cmd_cfg &= ~CMD_CFG_NO_RESP;
if (cmd->flags & MMC_RSP_136)
desc->cmd_cfg |= CMD_CFG_RESP_128;
desc->cmd_cfg |= CMD_CFG_RESP_NUM;
desc->cmd_resp = 0;
if (!(cmd->flags & MMC_RSP_CRC))
desc->cmd_cfg |= CMD_CFG_RESP_NOCRC;
if (cmd->flags & MMC_RSP_BUSY)
desc->cmd_cfg |= CMD_CFG_R1B;
} else {
desc->cmd_cfg |= CMD_CFG_NO_RESP;
}
/* data? */
if (cmd->data) {
desc->cmd_cfg |= CMD_CFG_DATA_IO;
if (cmd->data->blocks > 1) {
desc->cmd_cfg |= CMD_CFG_BLOCK_MODE;
desc->cmd_cfg |=
(cmd->data->blocks & CMD_CFG_LENGTH_MASK) <<
CMD_CFG_LENGTH_SHIFT;
/* check if block-size matches, if not update */
cfg = readl(host->regs + SD_EMMC_CFG);
blk_len = cfg & (CFG_BLK_LEN_MASK << CFG_BLK_LEN_SHIFT);
blk_len >>= CFG_BLK_LEN_SHIFT;
if (blk_len != ilog2(cmd->data->blksz)) {
dev_dbg(host->dev, "%s: update blk_len %d -> %d\n",
__func__, blk_len,
ilog2(cmd->data->blksz));
blk_len = ilog2(cmd->data->blksz);
cfg &= ~(CFG_BLK_LEN_MASK << CFG_BLK_LEN_SHIFT);
cfg |= blk_len << CFG_BLK_LEN_SHIFT;
writel(cfg, host->regs + SD_EMMC_CFG);
}
} else {
desc->cmd_cfg &= ~CMD_CFG_BLOCK_MODE;
desc->cmd_cfg |=
(cmd->data->blksz & CMD_CFG_LENGTH_MASK) <<
CMD_CFG_LENGTH_SHIFT;
}
cmd->data->bytes_xfered = 0;
xfer_bytes = cmd->data->blksz * cmd->data->blocks;
if (cmd->data->flags & MMC_DATA_WRITE) {
desc->cmd_cfg |= CMD_CFG_DATA_WR;
WARN_ON(xfer_bytes > host->bounce_buf_size);
sg_copy_to_buffer(cmd->data->sg, cmd->data->sg_len,
host->bounce_buf, xfer_bytes);
cmd->data->bytes_xfered = xfer_bytes;
dma_wmb();
} else {
desc->cmd_cfg &= ~CMD_CFG_DATA_WR;
}
if (xfer_bytes > 0) {
desc->cmd_cfg &= ~CMD_CFG_DATA_NUM;
desc->cmd_data = host->bounce_dma_addr & CMD_DATA_MASK;
} else {
/* write data to data_addr */
desc->cmd_cfg |= CMD_CFG_DATA_NUM;
desc->cmd_data = 0;
}
cmd_cfg_timeout = 12;
} else {
desc->cmd_cfg &= ~CMD_CFG_DATA_IO;
cmd_cfg_timeout = 10;
}
desc->cmd_cfg |= (cmd_cfg_timeout & CMD_CFG_TIMEOUT_MASK) <<
CMD_CFG_TIMEOUT_SHIFT;
host->cmd = cmd;
cmd_cfg |= FIELD_PREP(CMD_CFG_CMD_INDEX_MASK, cmd->opcode);
cmd_cfg |= CMD_CFG_OWNER; /* owned by CPU */
meson_mmc_set_response_bits(cmd, &cmd_cfg);
/* data? */
if (data) {
data->bytes_xfered = 0;
cmd_cfg |= CMD_CFG_DATA_IO;
cmd_cfg |= FIELD_PREP(CMD_CFG_TIMEOUT_MASK,
ilog2(meson_mmc_get_timeout_msecs(data)));
if (meson_mmc_desc_chain_mode(data)) {
meson_mmc_desc_chain_transfer(mmc, cmd_cfg);
return;
}
if (data->blocks > 1) {
cmd_cfg |= CMD_CFG_BLOCK_MODE;
cmd_cfg |= FIELD_PREP(CMD_CFG_LENGTH_MASK,
data->blocks);
meson_mmc_set_blksz(mmc, data->blksz);
} else {
cmd_cfg |= FIELD_PREP(CMD_CFG_LENGTH_MASK, data->blksz);
}
xfer_bytes = data->blksz * data->blocks;
if (data->flags & MMC_DATA_WRITE) {
cmd_cfg |= CMD_CFG_DATA_WR;
WARN_ON(xfer_bytes > host->bounce_buf_size);
sg_copy_to_buffer(data->sg, data->sg_len,
host->bounce_buf, xfer_bytes);
dma_wmb();
}
cmd_data = host->bounce_dma_addr & CMD_DATA_MASK;
} else {
cmd_cfg |= FIELD_PREP(CMD_CFG_TIMEOUT_MASK,
ilog2(SD_EMMC_CMD_TIMEOUT));
}
/* Last descriptor */
desc->cmd_cfg |= CMD_CFG_END_OF_CHAIN;
writel(desc->cmd_cfg, host->regs + SD_EMMC_CMD_CFG);
writel(desc->cmd_data, host->regs + SD_EMMC_CMD_DAT);
writel(desc->cmd_resp, host->regs + SD_EMMC_CMD_RSP);
cmd_cfg |= CMD_CFG_END_OF_CHAIN;
writel(cmd_cfg, host->regs + SD_EMMC_CMD_CFG);
writel(cmd_data, host->regs + SD_EMMC_CMD_DAT);
writel(0, host->regs + SD_EMMC_CMD_RSP);
wmb(); /* ensure descriptor is written before kicked */
writel(desc->cmd_arg, host->regs + SD_EMMC_CMD_ARG);
writel(cmd->arg, host->regs + SD_EMMC_CMD_ARG);
}
static void meson_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
struct meson_host *host = mmc_priv(mmc);
bool needs_pre_post_req = mrq->data &&
!(mrq->data->host_cookie & SD_EMMC_PRE_REQ_DONE);
WARN_ON(host->mrq != NULL);
if (needs_pre_post_req) {
meson_mmc_get_transfer_mode(mmc, mrq);
if (!meson_mmc_desc_chain_mode(mrq->data))
needs_pre_post_req = false;
}
if (needs_pre_post_req)
meson_mmc_pre_req(mmc, mrq);
/* Stop execution */
writel(0, host->regs + SD_EMMC_START);
host->mrq = mrq;
meson_mmc_start_cmd(mmc, mrq->sbc ?: mrq->cmd);
if (mrq->sbc)
meson_mmc_start_cmd(mmc, mrq->sbc);
else
meson_mmc_start_cmd(mmc, mrq->cmd);
if (needs_pre_post_req)
meson_mmc_post_req(mmc, mrq, 0);
}
static int meson_mmc_read_resp(struct mmc_host *mmc, struct mmc_command *cmd)
static void meson_mmc_read_resp(struct mmc_host *mmc, struct mmc_command *cmd)
{
struct meson_host *host = mmc_priv(mmc);
@ -573,15 +712,13 @@ static int meson_mmc_read_resp(struct mmc_host *mmc, struct mmc_command *cmd)
} else if (cmd->flags & MMC_RSP_PRESENT) {
cmd->resp[0] = readl(host->regs + SD_EMMC_CMD_RSP);
}
return 0;
}
static irqreturn_t meson_mmc_irq(int irq, void *dev_id)
{
struct meson_host *host = dev_id;
struct mmc_request *mrq;
struct mmc_command *cmd;
struct mmc_data *data;
u32 irq_en, status, raw_status;
irqreturn_t ret = IRQ_HANDLED;
@ -590,14 +727,11 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id)
cmd = host->cmd;
mrq = host->mrq;
if (WARN_ON(!mrq))
return IRQ_NONE;
if (WARN_ON(!cmd))
return IRQ_NONE;
data = cmd->data;
spin_lock(&host->lock);
irq_en = readl(host->regs + SD_EMMC_IRQ_EN);
raw_status = readl(host->regs + SD_EMMC_STATUS);
@ -610,6 +744,8 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id)
goto out;
}
meson_mmc_read_resp(host->mmc, cmd);
cmd->error = 0;
if (status & IRQ_RXD_ERR_MASK) {
dev_dbg(host->dev, "Unhandled IRQ: RXD error\n");
@ -636,12 +772,16 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id)
if (status & IRQ_SDIO)
dev_dbg(host->dev, "Unhandled IRQ: SDIO.\n");
if (status & (IRQ_END_OF_CHAIN | IRQ_RESP_STATUS))
ret = IRQ_WAKE_THREAD;
else {
if (status & (IRQ_END_OF_CHAIN | IRQ_RESP_STATUS)) {
if (data && !cmd->error)
data->bytes_xfered = data->blksz * data->blocks;
if (meson_mmc_bounce_buf_read(data) ||
meson_mmc_get_next_command(cmd))
ret = IRQ_WAKE_THREAD;
} else {
dev_warn(host->dev, "Unknown IRQ! status=0x%04x: MMC CMD%u arg=0x%08x flags=0x%08x stop=%d\n",
status, cmd->opcode, cmd->arg,
cmd->flags, mrq->stop ? 1 : 0);
cmd->flags, cmd->mrq->stop ? 1 : 0);
if (cmd->data) {
struct mmc_data *data = cmd->data;
@ -656,10 +796,8 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id)
/* ack all (enabled) interrupts */
writel(status, host->regs + SD_EMMC_STATUS);
if (ret == IRQ_HANDLED) {
meson_mmc_read_resp(host->mmc, cmd);
if (ret == IRQ_HANDLED)
meson_mmc_request_done(host->mmc, cmd->mrq);
}
spin_unlock(&host->lock);
return ret;
@ -668,35 +806,53 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id)
static irqreturn_t meson_mmc_irq_thread(int irq, void *dev_id)
{
struct meson_host *host = dev_id;
struct mmc_request *mrq = host->mrq;
struct mmc_command *cmd = host->cmd;
struct mmc_command *next_cmd, *cmd = host->cmd;
struct mmc_data *data;
unsigned int xfer_bytes;
if (WARN_ON(!mrq))
return IRQ_NONE;
if (WARN_ON(!cmd))
return IRQ_NONE;
data = cmd->data;
if (data && data->flags & MMC_DATA_READ) {
if (meson_mmc_bounce_buf_read(data)) {
xfer_bytes = data->blksz * data->blocks;
WARN_ON(xfer_bytes > host->bounce_buf_size);
sg_copy_from_buffer(data->sg, data->sg_len,
host->bounce_buf, xfer_bytes);
data->bytes_xfered = xfer_bytes;
}
meson_mmc_read_resp(host->mmc, cmd);
if (!data || !data->stop || mrq->sbc)
meson_mmc_request_done(host->mmc, mrq);
next_cmd = meson_mmc_get_next_command(cmd);
if (next_cmd)
meson_mmc_start_cmd(host->mmc, next_cmd);
else
meson_mmc_start_cmd(host->mmc, data->stop);
meson_mmc_request_done(host->mmc, cmd->mrq);
return IRQ_HANDLED;
}
static int meson_mmc_execute_tuning(struct mmc_host *mmc, u32 opcode)
{
struct meson_host *host = mmc_priv(mmc);
struct meson_tuning_params tp_old = host->tp;
int ret = -EINVAL, i, cmd_error;
dev_info(mmc_dev(mmc), "(re)tuning...\n");
for (i = CLK_PHASE_0; i <= CLK_PHASE_270; i++) {
host->tp.rx_phase = i;
/* exclude the active parameter set if retuning */
if (!memcmp(&tp_old, &host->tp, sizeof(tp_old)) &&
mmc->doing_retune)
continue;
meson_mmc_set_tuning_params(mmc);
ret = mmc_send_tuning(mmc, opcode, &cmd_error);
if (!ret)
break;
}
return ret;
}
/*
* NOTE: we only need this until the GPIO/pinctrl driver can handle
* interrupts. For now, the MMC core will use this for polling.
@ -711,10 +867,25 @@ static int meson_mmc_get_cd(struct mmc_host *mmc)
return status;
}
static void meson_mmc_cfg_init(struct meson_host *host)
{
u32 cfg = 0;
cfg |= FIELD_PREP(CFG_RESP_TIMEOUT_MASK,
ilog2(SD_EMMC_CFG_RESP_TIMEOUT));
cfg |= FIELD_PREP(CFG_RC_CC_MASK, ilog2(SD_EMMC_CFG_CMD_GAP));
cfg |= FIELD_PREP(CFG_BLK_LEN_MASK, ilog2(SD_EMMC_CFG_BLK_SIZE));
writel(cfg, host->regs + SD_EMMC_CFG);
}
static const struct mmc_host_ops meson_mmc_ops = {
.request = meson_mmc_request,
.set_ios = meson_mmc_set_ios,
.get_cd = meson_mmc_get_cd,
.pre_req = meson_mmc_pre_req,
.post_req = meson_mmc_post_req,
.execute_tuning = meson_mmc_execute_tuning,
};
static int meson_mmc_probe(struct platform_device *pdev)
@ -722,7 +893,7 @@ static int meson_mmc_probe(struct platform_device *pdev)
struct resource *res;
struct meson_host *host;
struct mmc_host *mmc;
int ret;
int ret, irq;
mmc = mmc_alloc_host(sizeof(struct meson_host), &pdev->dev);
if (!mmc)
@ -754,8 +925,8 @@ static int meson_mmc_probe(struct platform_device *pdev)
goto free_host;
}
host->irq = platform_get_irq(pdev, 0);
if (host->irq == 0) {
irq = platform_get_irq(pdev, 0);
if (!irq) {
dev_err(&pdev->dev, "failed to get interrupt resource.\n");
ret = -EINVAL;
goto free_host;
@ -771,9 +942,13 @@ static int meson_mmc_probe(struct platform_device *pdev)
if (ret)
goto free_host;
host->tp.core_phase = CLK_PHASE_180;
host->tp.tx_phase = CLK_PHASE_0;
host->tp.rx_phase = CLK_PHASE_0;
ret = meson_mmc_clk_init(host);
if (ret)
goto free_host;
goto err_core_clk;
/* Stop execution */
writel(0, host->regs + SD_EMMC_START);
@ -783,14 +958,20 @@ static int meson_mmc_probe(struct platform_device *pdev)
writel(IRQ_EN_MASK, host->regs + SD_EMMC_STATUS);
writel(IRQ_EN_MASK, host->regs + SD_EMMC_IRQ_EN);
ret = devm_request_threaded_irq(&pdev->dev, host->irq,
meson_mmc_irq, meson_mmc_irq_thread,
IRQF_SHARED, DRIVER_NAME, host);
if (ret)
goto free_host;
/* set config to sane default */
meson_mmc_cfg_init(host);
ret = devm_request_threaded_irq(&pdev->dev, irq, meson_mmc_irq,
meson_mmc_irq_thread, IRQF_SHARED,
NULL, host);
if (ret)
goto err_div_clk;
mmc->caps |= MMC_CAP_CMD23;
mmc->max_blk_count = CMD_CFG_LENGTH_MASK;
mmc->max_req_size = mmc->max_blk_count * mmc->max_blk_size;
mmc->max_segs = SD_EMMC_DESC_BUF_LEN / sizeof(struct sd_emmc_desc);
mmc->max_seg_size = mmc->max_req_size;
/* data bounce buffer */
host->bounce_buf_size = mmc->max_req_size;
@ -800,7 +981,15 @@ static int meson_mmc_probe(struct platform_device *pdev)
if (host->bounce_buf == NULL) {
dev_err(host->dev, "Unable to map allocate DMA bounce buffer.\n");
ret = -ENOMEM;
goto free_host;
goto err_div_clk;
}
host->descs = dma_alloc_coherent(host->dev, SD_EMMC_DESC_BUF_LEN,
&host->descs_dma_addr, GFP_KERNEL);
if (!host->descs) {
dev_err(host->dev, "Allocating descriptor DMA buffer failed\n");
ret = -ENOMEM;
goto err_bounce_buf;
}
mmc->ops = &meson_mmc_ops;
@ -808,9 +997,14 @@ static int meson_mmc_probe(struct platform_device *pdev)
return 0;
free_host:
err_bounce_buf:
dma_free_coherent(host->dev, host->bounce_buf_size,
host->bounce_buf, host->bounce_dma_addr);
err_div_clk:
clk_disable_unprepare(host->cfg_div_clk);
err_core_clk:
clk_disable_unprepare(host->core_clk);
free_host:
mmc_free_host(mmc);
return ret;
}
@ -819,9 +1013,13 @@ static int meson_mmc_remove(struct platform_device *pdev)
{
struct meson_host *host = dev_get_drvdata(&pdev->dev);
mmc_remove_host(host->mmc);
/* disable interrupts */
writel(0, host->regs + SD_EMMC_IRQ_EN);
dma_free_coherent(host->dev, SD_EMMC_DESC_BUF_LEN,
host->descs, host->descs_dma_addr);
dma_free_coherent(host->dev, host->bounce_buf_size,
host->bounce_buf, host->bounce_dma_addr);

5
drivers/mmc/host/mmc_spi.c
View file

@ -888,10 +888,7 @@ mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd,
u32 clock_rate;
unsigned long timeout;
if (data->flags & MMC_DATA_READ)
direction = DMA_FROM_DEVICE;
else
direction = DMA_TO_DEVICE;
direction = mmc_get_dma_dir(data);
mmc_spi_setup_data_message(host, multiple, direction);
t = &host->t;

20
drivers/mmc/host/mmci.c
View file

@ -516,17 +516,14 @@ static void mmci_dma_data_error(struct mmci_host *host)
static void mmci_dma_unmap(struct mmci_host *host, struct mmc_data *data)
{
struct dma_chan *chan;
enum dma_data_direction dir;
if (data->flags & MMC_DATA_READ) {
dir = DMA_FROM_DEVICE;
if (data->flags & MMC_DATA_READ)
chan = host->dma_rx_channel;
} else {
dir = DMA_TO_DEVICE;
else
chan = host->dma_tx_channel;
}
dma_unmap_sg(chan->device->dev, data->sg, data->sg_len, dir);
dma_unmap_sg(chan->device->dev, data->sg, data->sg_len,
mmc_get_dma_dir(data));
}
static void mmci_dma_finalize(struct mmci_host *host, struct mmc_data *data)
@ -589,17 +586,14 @@ static int __mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data,
struct dma_chan *chan;
struct dma_device *device;
struct dma_async_tx_descriptor *desc;
enum dma_data_direction buffer_dirn;
int nr_sg;
unsigned long flags = DMA_CTRL_ACK;
if (data->flags & MMC_DATA_READ) {
conf.direction = DMA_DEV_TO_MEM;
buffer_dirn = DMA_FROM_DEVICE;
chan = host->dma_rx_channel;
} else {
conf.direction = DMA_MEM_TO_DEV;
buffer_dirn = DMA_TO_DEVICE;
chan = host->dma_tx_channel;
}
@ -612,7 +606,8 @@ static int __mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data,
return -EINVAL;
device = chan->device;
nr_sg = dma_map_sg(device->dev, data->sg, data->sg_len, buffer_dirn);
nr_sg = dma_map_sg(device->dev, data->sg, data->sg_len,
mmc_get_dma_dir(data));
if (nr_sg == 0)
return -EINVAL;
@ -631,7 +626,8 @@ static int __mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data,
return 0;
unmap_exit:
dma_unmap_sg(device->dev, data->sg, data->sg_len, buffer_dirn);
dma_unmap_sg(device->dev, data->sg, data->sg_len,
mmc_get_dma_dir(data));
return -ENOMEM;
}

8
drivers/mmc/host/moxart-mmc.c
View file

@ -256,7 +256,7 @@ static void moxart_dma_complete(void *param)
static void moxart_transfer_dma(struct mmc_data *data, struct moxart_host *host)
{
u32 len, dir_data, dir_slave;
u32 len, dir_slave;
long dma_time;
struct dma_async_tx_descriptor *desc = NULL;
struct dma_chan *dma_chan;
@ -266,16 +266,14 @@ static void moxart_transfer_dma(struct mmc_data *data, struct moxart_host *host)
if (data->flags & MMC_DATA_WRITE) {
dma_chan = host->dma_chan_tx;
dir_data = DMA_TO_DEVICE;
dir_slave = DMA_MEM_TO_DEV;
} else {
dma_chan = host->dma_chan_rx;
dir_data = DMA_FROM_DEVICE;
dir_slave = DMA_DEV_TO_MEM;
}
len = dma_map_sg(dma_chan->device->dev, data->sg,
data->sg_len, dir_data);
data->sg_len, mmc_get_dma_dir(data));
if (len > 0) {
desc = dmaengine_prep_slave_sg(dma_chan, data->sg,
@ -301,7 +299,7 @@ static void moxart_transfer_dma(struct mmc_data *data, struct moxart_host *host)
dma_unmap_sg(dma_chan->device->dev,
data->sg, data->sg_len,
dir_data);
mmc_get_dma_dir(data));
}

176
drivers/mmc/host/mtk-sd.c
View file

@ -76,6 +76,7 @@
#define MSDC_PATCH_BIT1 0xb4
#define MSDC_PAD_TUNE 0xec
#define PAD_DS_TUNE 0x188
#define PAD_CMD_TUNE 0x18c
#define EMMC50_CFG0 0x208
/*--------------------------------------------------------------------------*/
@ -211,13 +212,18 @@
#define MSDC_PATCH_BIT_SPCPUSH (0x1 << 29) /* RW */
#define MSDC_PATCH_BIT_DECRCTMO (0x1 << 30) /* RW */
#define MSDC_PAD_TUNE_DATWRDLY (0x1f << 0) /* RW */
#define MSDC_PAD_TUNE_DATRRDLY (0x1f << 8) /* RW */
#define MSDC_PAD_TUNE_CMDRDLY (0x1f << 16) /* RW */
#define MSDC_PAD_TUNE_CMDRRDLY (0x1f << 22) /* RW */
#define MSDC_PAD_TUNE_CLKTDLY (0x1f << 27) /* RW */
#define PAD_DS_TUNE_DLY1 (0x1f << 2) /* RW */
#define PAD_DS_TUNE_DLY2 (0x1f << 7) /* RW */
#define PAD_DS_TUNE_DLY3 (0x1f << 12) /* RW */
#define PAD_CMD_TUNE_RX_DLY3 (0x1f << 1) /* RW */
#define EMMC50_CFG_PADCMD_LATCHCK (0x1 << 0) /* RW */
#define EMMC50_CFG_CRCSTS_EDGE (0x1 << 3) /* RW */
#define EMMC50_CFG_CFCSTS_SEL (0x1 << 4) /* RW */
@ -285,12 +291,14 @@ struct msdc_save_para {
u32 patch_bit0;
u32 patch_bit1;
u32 pad_ds_tune;
u32 pad_cmd_tune;
u32 emmc50_cfg0;
};
struct msdc_tune_para {
u32 iocon;
u32 pad_tune;
u32 pad_cmd_tune;
};
struct msdc_delay_phase {
@ -332,6 +340,10 @@ struct msdc_host {
unsigned char timing;
bool vqmmc_enabled;
u32 hs400_ds_delay;
u32 hs200_cmd_int_delay; /* cmd internal delay for HS200/SDR104 */
u32 hs400_cmd_int_delay; /* cmd internal delay for HS400 */
bool hs400_cmd_resp_sel_rising;
/* cmd response sample selection for HS400 */
bool hs400_mode; /* current eMMC will run at hs400 mode */
struct msdc_save_para save_para; /* used when gate HCLK */
struct msdc_tune_para def_tune_para; /* default tune setting */
@ -462,11 +474,9 @@ static void msdc_prepare_data(struct msdc_host *host, struct mmc_request *mrq)
struct mmc_data *data = mrq->data;
if (!(data->host_cookie & MSDC_PREPARE_FLAG)) {
bool read = (data->flags & MMC_DATA_READ) != 0;
data->host_cookie |= MSDC_PREPARE_FLAG;
data->sg_count = dma_map_sg(host->dev, data->sg, data->sg_len,
read ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
mmc_get_dma_dir(data));
}
}
@ -478,10 +488,8 @@ static void msdc_unprepare_data(struct msdc_host *host, struct mmc_request *mrq)
return;
if (data->host_cookie & MSDC_PREPARE_FLAG) {
bool read = (data->flags & MMC_DATA_READ) != 0;
dma_unmap_sg(host->dev, data->sg, data->sg_len,
read ? DMA_FROM_DEVICE : DMA_TO_DEVICE);
mmc_get_dma_dir(data));
data->host_cookie &= ~MSDC_PREPARE_FLAG;
}
}
@ -601,8 +609,14 @@ static void msdc_set_mclk(struct msdc_host *host, unsigned char timing, u32 hz)
} else {
writel(host->saved_tune_para.iocon, host->base + MSDC_IOCON);
writel(host->saved_tune_para.pad_tune, host->base + MSDC_PAD_TUNE);
writel(host->saved_tune_para.pad_cmd_tune,
host->base + PAD_CMD_TUNE);
}
if (timing == MMC_TIMING_MMC_HS400)
sdr_set_field(host->base + PAD_CMD_TUNE,
MSDC_PAD_TUNE_CMDRRDLY,
host->hs400_cmd_int_delay);
dev_dbg(host->dev, "sclk: %d, timing: %d\n", host->sclk, timing);
}
@ -1303,7 +1317,7 @@ static struct msdc_delay_phase get_best_delay(struct msdc_host *host, u32 delay)
len_final = len;
}
start += len ? len : 1;
if (len >= 8 && start_final < 4)
if (len >= 12 && start_final < 4)
break;
}
@ -1326,36 +1340,67 @@ static int msdc_tune_response(struct mmc_host *mmc, u32 opcode)
struct msdc_host *host = mmc_priv(mmc);
u32 rise_delay = 0, fall_delay = 0;
struct msdc_delay_phase final_rise_delay, final_fall_delay = { 0,};
struct msdc_delay_phase internal_delay_phase;
u8 final_delay, final_maxlen;
u32 internal_delay = 0;
int cmd_err;
int i;
int i, j;
if (mmc->ios.timing == MMC_TIMING_MMC_HS200 ||
mmc->ios.timing == MMC_TIMING_UHS_SDR104)
sdr_set_field(host->base + MSDC_PAD_TUNE,
MSDC_PAD_TUNE_CMDRRDLY,
host->hs200_cmd_int_delay);
sdr_clr_bits(host->base + MSDC_IOCON, MSDC_IOCON_RSPL);
for (i = 0 ; i < PAD_DELAY_MAX; i++) {
sdr_set_field(host->base + MSDC_PAD_TUNE,
MSDC_PAD_TUNE_CMDRDLY, i);
mmc_send_tuning(mmc, opcode, &cmd_err);
if (!cmd_err)
rise_delay |= (1 << i);
/*
* Using the same parameters, it may sometimes pass the test,
* but sometimes it may fail. To make sure the parameters are
* more stable, we test each set of parameters 3 times.
*/
for (j = 0; j < 3; j++) {
mmc_send_tuning(mmc, opcode, &cmd_err);
if (!cmd_err) {
rise_delay |= (1 << i);
} else {
rise_delay &= ~(1 << i);
break;
}
}
}
final_rise_delay = get_best_delay(host, rise_delay);
/* if rising edge has enough margin, then do not scan falling edge */
if (final_rise_delay.maxlen >= 10 ||
(final_rise_delay.start == 0 && final_rise_delay.maxlen >= 4))
if (final_rise_delay.maxlen >= 12 && final_rise_delay.start < 4)
goto skip_fall;
sdr_set_bits(host->base + MSDC_IOCON, MSDC_IOCON_RSPL);
for (i = 0; i < PAD_DELAY_MAX; i++) {
sdr_set_field(host->base + MSDC_PAD_TUNE,
MSDC_PAD_TUNE_CMDRDLY, i);
mmc_send_tuning(mmc, opcode, &cmd_err);
if (!cmd_err)
fall_delay |= (1 << i);
/*
* Using the same parameters, it may sometimes pass the test,
* but sometimes it may fail. To make sure the parameters are
* more stable, we test each set of parameters 3 times.
*/
for (j = 0; j < 3; j++) {
mmc_send_tuning(mmc, opcode, &cmd_err);
if (!cmd_err) {
fall_delay |= (1 << i);
} else {
fall_delay &= ~(1 << i);
break;
}
}
}
final_fall_delay = get_best_delay(host, fall_delay);
skip_fall:
final_maxlen = max(final_rise_delay.maxlen, final_fall_delay.maxlen);
if (final_fall_delay.maxlen >= 12 && final_fall_delay.start < 4)
final_maxlen = final_fall_delay.maxlen;
if (final_maxlen == final_rise_delay.maxlen) {
sdr_clr_bits(host->base + MSDC_IOCON, MSDC_IOCON_RSPL);
sdr_set_field(host->base + MSDC_PAD_TUNE, MSDC_PAD_TUNE_CMDRDLY,
@ -1367,7 +1412,71 @@ static int msdc_tune_response(struct mmc_host *mmc, u32 opcode)
final_fall_delay.final_phase);
final_delay = final_fall_delay.final_phase;
}
if (host->hs200_cmd_int_delay)
goto skip_internal;
for (i = 0; i < PAD_DELAY_MAX; i++) {
sdr_set_field(host->base + MSDC_PAD_TUNE,
MSDC_PAD_TUNE_CMDRRDLY, i);
mmc_send_tuning(mmc, opcode, &cmd_err);
if (!cmd_err)
internal_delay |= (1 << i);
}
dev_dbg(host->dev, "Final internal delay: 0x%x\n", internal_delay);
internal_delay_phase = get_best_delay(host, internal_delay);
sdr_set_field(host->base + MSDC_PAD_TUNE, MSDC_PAD_TUNE_CMDRRDLY,
internal_delay_phase.final_phase);
skip_internal:
dev_dbg(host->dev, "Final cmd pad delay: %x\n", final_delay);
return final_delay == 0xff ? -EIO : 0;
}
static int hs400_tune_response(struct mmc_host *mmc, u32 opcode)
{
struct msdc_host *host = mmc_priv(mmc);
u32 cmd_delay = 0;
struct msdc_delay_phase final_cmd_delay = { 0,};
u8 final_delay;
int cmd_err;
int i, j;
/* select EMMC50 PAD CMD tune */
sdr_set_bits(host->base + PAD_CMD_TUNE, BIT(0));
if (mmc->ios.timing == MMC_TIMING_MMC_HS200 ||
mmc->ios.timing == MMC_TIMING_UHS_SDR104)
sdr_set_field(host->base + MSDC_PAD_TUNE,
MSDC_PAD_TUNE_CMDRRDLY,
host->hs200_cmd_int_delay);
if (host->hs400_cmd_resp_sel_rising)
sdr_clr_bits(host->base + MSDC_IOCON, MSDC_IOCON_RSPL);
else
sdr_set_bits(host->base + MSDC_IOCON, MSDC_IOCON_RSPL);
for (i = 0 ; i < PAD_DELAY_MAX; i++) {
sdr_set_field(host->base + PAD_CMD_TUNE,
PAD_CMD_TUNE_RX_DLY3, i);
/*
* Using the same parameters, it may sometimes pass the test,
* but sometimes it may fail. To make sure the parameters are
* more stable, we test each set of parameters 3 times.
*/
for (j = 0; j < 3; j++) {
mmc_send_tuning(mmc, opcode, &cmd_err);
if (!cmd_err) {
cmd_delay |= (1 << i);
} else {
cmd_delay &= ~(1 << i);
break;
}
}
}
final_cmd_delay = get_best_delay(host, cmd_delay);
sdr_set_field(host->base + PAD_CMD_TUNE, PAD_CMD_TUNE_RX_DLY3,
final_cmd_delay.final_phase);
final_delay = final_cmd_delay.final_phase;
dev_dbg(host->dev, "Final cmd pad delay: %x\n", final_delay);
return final_delay == 0xff ? -EIO : 0;
}
@ -1390,7 +1499,7 @@ static int msdc_tune_data(struct mmc_host *mmc, u32 opcode)
}
final_rise_delay = get_best_delay(host, rise_delay);
/* if rising edge has enough margin, then do not scan falling edge */
if (final_rise_delay.maxlen >= 10 ||
if (final_rise_delay.maxlen >= 12 ||
(final_rise_delay.start == 0 && final_rise_delay.maxlen >= 4))
goto skip_fall;
@ -1423,6 +1532,7 @@ static int msdc_tune_data(struct mmc_host *mmc, u32 opcode)
final_delay = final_fall_delay.final_phase;
}
dev_dbg(host->dev, "Final data pad delay: %x\n", final_delay);
return final_delay == 0xff ? -EIO : 0;
}
@ -1431,7 +1541,10 @@ static int msdc_execute_tuning(struct mmc_host *mmc, u32 opcode)
struct msdc_host *host = mmc_priv(mmc);
int ret;
ret = msdc_tune_response(mmc, opcode);
if (host->hs400_mode)
ret = hs400_tune_response(mmc, opcode);
else
ret = msdc_tune_response(mmc, opcode);
if (ret == -EIO) {
dev_err(host->dev, "Tune response fail!\n");
return ret;
@ -1444,6 +1557,7 @@ static int msdc_execute_tuning(struct mmc_host *mmc, u32 opcode)
host->saved_tune_para.iocon = readl(host->base + MSDC_IOCON);
host->saved_tune_para.pad_tune = readl(host->base + MSDC_PAD_TUNE);
host->saved_tune_para.pad_cmd_tune = readl(host->base + PAD_CMD_TUNE);
return ret;
}
@ -1478,6 +1592,25 @@ static struct mmc_host_ops mt_msdc_ops = {
.hw_reset = msdc_hw_reset,
};
static void msdc_of_property_parse(struct platform_device *pdev,
struct msdc_host *host)
{
of_property_read_u32(pdev->dev.of_node, "hs400-ds-delay",
&host->hs400_ds_delay);
of_property_read_u32(pdev->dev.of_node, "mediatek,hs200-cmd-int-delay",
&host->hs200_cmd_int_delay);
of_property_read_u32(pdev->dev.of_node, "mediatek,hs400-cmd-int-delay",
&host->hs400_cmd_int_delay);
if (of_property_read_bool(pdev->dev.of_node,
"mediatek,hs400-cmd-resp-sel-rising"))
host->hs400_cmd_resp_sel_rising = true;
else
host->hs400_cmd_resp_sel_rising = false;
}
static int msdc_drv_probe(struct platform_device *pdev)
{
struct mmc_host *mmc;
@ -1549,10 +1682,7 @@ static int msdc_drv_probe(struct platform_device *pdev)
goto host_free;
}
if (!of_property_read_u32(pdev->dev.of_node, "hs400-ds-delay",
&host->hs400_ds_delay))
dev_dbg(&pdev->dev, "hs400-ds-delay: %x\n",
host->hs400_ds_delay);
msdc_of_property_parse(pdev, host);
host->dev = &pdev->dev;
host->mmc = mmc;
@ -1664,6 +1794,7 @@ static void msdc_save_reg(struct msdc_host *host)
host->save_para.patch_bit0 = readl(host->base + MSDC_PATCH_BIT);
host->save_para.patch_bit1 = readl(host->base + MSDC_PATCH_BIT1);
host->save_para.pad_ds_tune = readl(host->base + PAD_DS_TUNE);
host->save_para.pad_cmd_tune = readl(host->base + PAD_CMD_TUNE);
host->save_para.emmc50_cfg0 = readl(host->base + EMMC50_CFG0);
}
@ -1676,6 +1807,7 @@ static void msdc_restore_reg(struct msdc_host *host)
writel(host->save_para.patch_bit0, host->base + MSDC_PATCH_BIT);
writel(host->save_para.patch_bit1, host->base + MSDC_PATCH_BIT1);
writel(host->save_para.pad_ds_tune, host->base + PAD_DS_TUNE);
writel(host->save_para.pad_cmd_tune, host->base + PAD_CMD_TUNE);
writel(host->save_para.emmc50_cfg0, host->base + EMMC50_CFG0);
}

11
drivers/mmc/host/mvsdio.c
View file

@ -125,10 +125,10 @@ static int mvsd_setup_data(struct mvsd_host *host, struct mmc_data *data)
return 1;
} else {
dma_addr_t phys_addr;
int dma_dir = (data->flags & MMC_DATA_READ) ?
DMA_FROM_DEVICE : DMA_TO_DEVICE;
host->sg_frags = dma_map_sg(mmc_dev(host->mmc), data->sg,
data->sg_len, dma_dir);
host->sg_frags = dma_map_sg(mmc_dev(host->mmc),
data->sg, data->sg_len,
mmc_get_dma_dir(data));
phys_addr = sg_dma_address(data->sg);
mvsd_write(MVSD_SYS_ADDR_LOW, (u32)phys_addr & 0xffff);
mvsd_write(MVSD_SYS_ADDR_HI, (u32)phys_addr >> 16);
@ -294,8 +294,7 @@ static u32 mvsd_finish_data(struct mvsd_host *host, struct mmc_data *data,
host->pio_size = 0;
} else {
dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->sg_frags,
(data->flags & MMC_DATA_READ) ?
DMA_FROM_DEVICE : DMA_TO_DEVICE);
mmc_get_dma_dir(data));
}
if (err_status & MVSD_ERR_DATA_TIMEOUT)

21
drivers/mmc/host/omap_hsmmc.c
View file

@ -935,15 +935,6 @@ omap_hsmmc_start_command(struct omap_hsmmc_host *host, struct mmc_command *cmd,
OMAP_HSMMC_WRITE(host->base, CMD, cmdreg);
}
static int
omap_hsmmc_get_dma_dir(struct omap_hsmmc_host *host, struct mmc_data *data)
{
if (data->flags & MMC_DATA_WRITE)
return DMA_TO_DEVICE;
else
return DMA_FROM_DEVICE;
}
static struct dma_chan *omap_hsmmc_get_dma_chan(struct omap_hsmmc_host *host,
struct mmc_data *data)
{
@ -1055,7 +1046,7 @@ static void omap_hsmmc_dma_cleanup(struct omap_hsmmc_host *host, int errno)
dmaengine_terminate_all(chan);
dma_unmap_sg(chan->device->dev,
host->data->sg, host->data->sg_len,
omap_hsmmc_get_dma_dir(host, host->data));
mmc_get_dma_dir(host->data));
host->data->host_cookie = 0;
}
@ -1350,7 +1341,7 @@ static void omap_hsmmc_dma_callback(void *param)
if (!data->host_cookie)
dma_unmap_sg(chan->device->dev,
data->sg, data->sg_len,
omap_hsmmc_get_dma_dir(host, data));
mmc_get_dma_dir(data));
req_in_progress = host->req_in_progress;
host->dma_ch = -1;
@ -1383,7 +1374,7 @@ static int omap_hsmmc_pre_dma_transfer(struct omap_hsmmc_host *host,
/* Check if next job is already prepared */
if (next || data->host_cookie != host->next_data.cookie) {
dma_len = dma_map_sg(chan->device->dev, data->sg, data->sg_len,
omap_hsmmc_get_dma_dir(host, data));
mmc_get_dma_dir(data));
} else {
dma_len = host->next_data.dma_len;
@ -1569,7 +1560,7 @@ static void omap_hsmmc_post_req(struct mmc_host *mmc, struct mmc_request *mrq,
struct dma_chan *c = omap_hsmmc_get_dma_chan(host, data);
dma_unmap_sg(c->device->dev, data->sg, data->sg_len,
omap_hsmmc_get_dma_dir(host, data));
mmc_get_dma_dir(data));
data->host_cookie = 0;
}
}
@ -1770,8 +1761,8 @@ static int omap_hsmmc_configure_wake_irq(struct omap_hsmmc_host *host)
*/
if (host->pdata->controller_flags & OMAP_HSMMC_SWAKEUP_MISSING) {
struct pinctrl *p = devm_pinctrl_get(host->dev);
if (!p) {
ret = -ENODEV;
if (IS_ERR(p)) {
ret = PTR_ERR(p);
goto err_free_irq;
}
if (IS_ERR(pinctrl_lookup_state(p, PINCTRL_STATE_DEFAULT))) {

261
drivers/mmc/host/s3cmci.c
View file

@ -24,6 +24,10 @@
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/mmc/slot-gpio.h>
#include <plat/gpio-cfg.h>
#include <mach/dma.h>
@ -807,21 +811,6 @@ static irqreturn_t s3cmci_irq(int irq, void *dev_id)
}
/*
* ISR for the CardDetect Pin
*/
static irqreturn_t s3cmci_irq_cd(int irq, void *dev_id)
{
struct s3cmci_host *host = (struct s3cmci_host *)dev_id;
dbg(host, dbg_irq, "card detect\n");
mmc_detect_change(host->mmc, msecs_to_jiffies(500));
return IRQ_HANDLED;
}
static void s3cmci_dma_done_callback(void *arg)
{
struct s3cmci_host *host = arg;
@ -1104,7 +1093,7 @@ static int s3cmci_prepare_dma(struct s3cmci_host *host, struct mmc_data *data)
conf.direction = DMA_MEM_TO_DEV;
dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
rw ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
mmc_get_dma_dir(data));
dmaengine_slave_config(host->dma, &conf);
desc = dmaengine_prep_slave_sg(host->dma, data->sg, data->sg_len,
@ -1121,7 +1110,7 @@ static int s3cmci_prepare_dma(struct s3cmci_host *host, struct mmc_data *data)
unmap_exit:
dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
rw ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
mmc_get_dma_dir(data));
return -ENOMEM;
}
@ -1177,19 +1166,6 @@ static void s3cmci_send_request(struct mmc_host *mmc)
s3cmci_enable_irq(host, true);
}
static int s3cmci_card_present(struct mmc_host *mmc)
{
struct s3cmci_host *host = mmc_priv(mmc);
struct s3c24xx_mci_pdata *pdata = host->pdata;
int ret;
if (pdata->no_detect)
return -ENOSYS;
ret = gpio_get_value(pdata->gpio_detect) ? 0 : 1;
return ret ^ pdata->detect_invert;
}
static void s3cmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
struct s3cmci_host *host = mmc_priv(mmc);
@ -1198,7 +1174,7 @@ static void s3cmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
host->cmd_is_stop = 0;
host->mrq = mrq;
if (s3cmci_card_present(mmc) == 0) {
if (mmc_gpio_get_cd(mmc) == 0) {
dbg(host, dbg_err, "%s: no medium present\n", __func__);
host->mrq->cmd->error = -ENOMEDIUM;
mmc_request_done(mmc, mrq);
@ -1242,8 +1218,9 @@ static void s3cmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
case MMC_POWER_ON:
case MMC_POWER_UP:
/* Configure GPE5...GPE10 pins in SD mode */
s3c_gpio_cfgall_range(S3C2410_GPE(5), 6, S3C_GPIO_SFN(2),
S3C_GPIO_PULL_NONE);
if (!host->pdev->dev.of_node)
s3c_gpio_cfgall_range(S3C2410_GPE(5), 6, S3C_GPIO_SFN(2),
S3C_GPIO_PULL_NONE);
if (host->pdata->set_power)
host->pdata->set_power(ios->power_mode, ios->vdd);
@ -1255,7 +1232,8 @@ static void s3cmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
case MMC_POWER_OFF:
default:
gpio_direction_output(S3C2410_GPE(5), 0);
if (!host->pdev->dev.of_node)
gpio_direction_output(S3C2410_GPE(5), 0);
if (host->is2440)
mci_con |= S3C2440_SDICON_SDRESET;
@ -1295,21 +1273,6 @@ static void s3cmci_reset(struct s3cmci_host *host)
writel(con, host->base + S3C2410_SDICON);
}
static int s3cmci_get_ro(struct mmc_host *mmc)
{
struct s3cmci_host *host = mmc_priv(mmc);
struct s3c24xx_mci_pdata *pdata = host->pdata;
int ret;
if (pdata->no_wprotect)
return 0;
ret = gpio_get_value(pdata->gpio_wprotect) ? 1 : 0;
ret ^= pdata->wprotect_invert;
return ret;
}
static void s3cmci_enable_sdio_irq(struct mmc_host *mmc, int enable)
{
struct s3cmci_host *host = mmc_priv(mmc);
@ -1353,8 +1316,8 @@ static void s3cmci_enable_sdio_irq(struct mmc_host *mmc, int enable)
static struct mmc_host_ops s3cmci_ops = {
.request = s3cmci_request,
.set_ios = s3cmci_set_ios,
.get_ro = s3cmci_get_ro,
.get_cd = s3cmci_card_present,
.get_ro = mmc_gpio_get_ro,
.get_cd = mmc_gpio_get_cd,
.enable_sdio_irq = s3cmci_enable_sdio_irq,
};
@ -1545,21 +1508,14 @@ static inline void s3cmci_debugfs_remove(struct s3cmci_host *host) { }
#endif /* CONFIG_DEBUG_FS */
static int s3cmci_probe(struct platform_device *pdev)
static int s3cmci_probe_pdata(struct s3cmci_host *host)
{
struct s3cmci_host *host;
struct mmc_host *mmc;
int ret;
int is2440;
int i;
struct platform_device *pdev = host->pdev;
struct mmc_host *mmc = host->mmc;
struct s3c24xx_mci_pdata *pdata;
int i, ret;
is2440 = platform_get_device_id(pdev)->driver_data;
mmc = mmc_alloc_host(sizeof(struct s3cmci_host), &pdev->dev);
if (!mmc) {
ret = -ENOMEM;
goto probe_out;
}
host->is2440 = platform_get_device_id(pdev)->driver_data;
for (i = S3C2410_GPE(5); i <= S3C2410_GPE(10); i++) {
ret = gpio_request(i, dev_name(&pdev->dev));
@ -1569,25 +1525,101 @@ static int s3cmci_probe(struct platform_device *pdev)
for (i--; i >= S3C2410_GPE(5); i--)
gpio_free(i);
goto probe_free_host;
return ret;
}
}
if (!pdev->dev.platform_data)
pdev->dev.platform_data = &s3cmci_def_pdata;
pdata = pdev->dev.platform_data;
if (pdata->no_wprotect)
mmc->caps2 |= MMC_CAP2_NO_WRITE_PROTECT;
if (pdata->no_detect)
mmc->caps |= MMC_CAP_NEEDS_POLL;
if (pdata->wprotect_invert)
mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH;
if (pdata->detect_invert)
mmc->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH;
if (gpio_is_valid(pdata->gpio_detect)) {
ret = mmc_gpio_request_cd(mmc, pdata->gpio_detect, 0);
if (ret) {
dev_err(&pdev->dev, "error requesting GPIO for CD %d\n",
ret);
return ret;
}
}
if (gpio_is_valid(pdata->gpio_wprotect)) {
ret = mmc_gpio_request_ro(mmc, pdata->gpio_wprotect);
if (ret) {
dev_err(&pdev->dev, "error requesting GPIO for WP %d\n",
ret);
return ret;
}
}
return 0;
}
static int s3cmci_probe_dt(struct s3cmci_host *host)
{
struct platform_device *pdev = host->pdev;
struct s3c24xx_mci_pdata *pdata;
struct mmc_host *mmc = host->mmc;
int ret;
host->is2440 = (int) of_device_get_match_data(&pdev->dev);
ret = mmc_of_parse(mmc);
if (ret)
return ret;
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return -ENOMEM;
pdev->dev.platform_data = pdata;
return 0;
}
static int s3cmci_probe(struct platform_device *pdev)
{
struct s3cmci_host *host;
struct mmc_host *mmc;
int ret;
int i;
mmc = mmc_alloc_host(sizeof(struct s3cmci_host), &pdev->dev);
if (!mmc) {
ret = -ENOMEM;
goto probe_out;
}
host = mmc_priv(mmc);
host->mmc = mmc;
host->pdev = pdev;
host->is2440 = is2440;
if (pdev->dev.of_node)
ret = s3cmci_probe_dt(host);
else
ret = s3cmci_probe_pdata(host);
if (ret)
goto probe_free_host;
host->pdata = pdev->dev.platform_data;
if (!host->pdata) {
pdev->dev.platform_data = &s3cmci_def_pdata;
host->pdata = &s3cmci_def_pdata;
}
spin_lock_init(&host->complete_lock);
tasklet_init(&host->pio_tasklet, pio_tasklet, (unsigned long) host);
if (is2440) {
if (host->is2440) {
host->sdiimsk = S3C2440_SDIIMSK;
host->sdidata = S3C2440_SDIDATA;
host->clk_div = 1;
@ -1645,43 +1677,6 @@ static int s3cmci_probe(struct platform_device *pdev)
disable_irq(host->irq);
host->irq_state = false;
if (!host->pdata->no_detect) {
ret = gpio_request(host->pdata->gpio_detect, "s3cmci detect");
if (ret) {
dev_err(&pdev->dev, "failed to get detect gpio\n");
goto probe_free_irq;
}
host->irq_cd = gpio_to_irq(host->pdata->gpio_detect);
if (host->irq_cd >= 0) {
if (request_irq(host->irq_cd, s3cmci_irq_cd,
IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING,
DRIVER_NAME, host)) {
dev_err(&pdev->dev,
"can't get card detect irq.\n");
ret = -ENOENT;
goto probe_free_gpio_cd;
}
} else {
dev_warn(&pdev->dev,
"host detect has no irq available\n");
gpio_direction_input(host->pdata->gpio_detect);
}
} else
host->irq_cd = -1;
if (!host->pdata->no_wprotect) {
ret = gpio_request(host->pdata->gpio_wprotect, "s3cmci wp");
if (ret) {
dev_err(&pdev->dev, "failed to get writeprotect\n");
goto probe_free_irq_cd;
}
gpio_direction_input(host->pdata->gpio_wprotect);
}
/* Depending on the dma state, get a DMA channel to use. */
if (s3cmci_host_usedma(host)) {
@ -1689,7 +1684,7 @@ static int s3cmci_probe(struct platform_device *pdev)
ret = PTR_ERR_OR_ZERO(host->dma);
if (ret) {
dev_err(&pdev->dev, "cannot get DMA channel.\n");
goto probe_free_gpio_wp;
goto probe_free_irq;
}
}
@ -1768,18 +1763,6 @@ static int s3cmci_probe(struct platform_device *pdev)
if (s3cmci_host_usedma(host))
dma_release_channel(host->dma);
probe_free_gpio_wp:
if (!host->pdata->no_wprotect)
gpio_free(host->pdata->gpio_wprotect);
probe_free_gpio_cd:
if (!host->pdata->no_detect)
gpio_free(host->pdata->gpio_detect);
probe_free_irq_cd:
if (host->irq_cd >= 0)
free_irq(host->irq_cd, host);
probe_free_irq:
free_irq(host->irq, host);
@ -1790,8 +1773,9 @@ static int s3cmci_probe(struct platform_device *pdev)
release_mem_region(host->mem->start, resource_size(host->mem));
probe_free_gpio:
for (i = S3C2410_GPE(5); i <= S3C2410_GPE(10); i++)
gpio_free(i);
if (!pdev->dev.of_node)
for (i = S3C2410_GPE(5); i <= S3C2410_GPE(10); i++)
gpio_free(i);
probe_free_host:
mmc_free_host(mmc);
@ -1818,7 +1802,6 @@ static int s3cmci_remove(struct platform_device *pdev)
{
struct mmc_host *mmc = platform_get_drvdata(pdev);
struct s3cmci_host *host = mmc_priv(mmc);
struct s3c24xx_mci_pdata *pd = host->pdata;
int i;
s3cmci_shutdown(pdev);
@ -1832,15 +1815,9 @@ static int s3cmci_remove(struct platform_device *pdev)
free_irq(host->irq, host);
if (!pd->no_wprotect)
gpio_free(pd->gpio_wprotect);
if (!pd->no_detect)
gpio_free(pd->gpio_detect);
for (i = S3C2410_GPE(5); i <= S3C2410_GPE(10); i++)
gpio_free(i);
if (!pdev->dev.of_node)
for (i = S3C2410_GPE(5); i <= S3C2410_GPE(10); i++)
gpio_free(i);
iounmap(host->base);
release_mem_region(host->mem->start, resource_size(host->mem));
@ -1849,6 +1826,23 @@ static int s3cmci_remove(struct platform_device *pdev)
return 0;
}
static const struct of_device_id s3cmci_dt_match[] = {
{
.compatible = "samsung,s3c2410-sdi",
.data = (void *)0,
},
{
.compatible = "samsung,s3c2412-sdi",
.data = (void *)1,
},
{
.compatible = "samsung,s3c2440-sdi",
.data = (void *)1,
},
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, s3cmci_dt_match);
static const struct platform_device_id s3cmci_driver_ids[] = {
{
.name = "s3c2410-sdi",
@ -1868,6 +1862,7 @@ MODULE_DEVICE_TABLE(platform, s3cmci_driver_ids);
static struct platform_driver s3cmci_driver = {
.driver = {
.name = "s3c-sdi",
.of_match_table = s3cmci_dt_match,
},
.id_table = s3cmci_driver_ids,
.probe = s3cmci_probe,

18
drivers/mmc/host/sdhci-acpi.c
View file

@ -263,10 +263,8 @@ static int sdhci_acpi_sd_probe_slot(struct platform_device *pdev,
/* Platform specific code during sd probe slot goes here */
if (hid && !strcmp(hid, "80865ACA")) {
if (hid && !strcmp(hid, "80865ACA"))
host->mmc_host_ops.get_cd = bxt_get_cd;
host->mmc->caps |= MMC_CAP_AGGRESSIVE_PM;
}
return 0;
}
@ -302,7 +300,7 @@ static const struct sdhci_acpi_slot sdhci_acpi_slot_int_sd = {
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
.quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
SDHCI_QUIRK2_STOP_WITH_TC,
.caps = MMC_CAP_WAIT_WHILE_BUSY,
.caps = MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_AGGRESSIVE_PM,
.probe_slot = sdhci_acpi_sd_probe_slot,
};
@ -524,8 +522,12 @@ static int sdhci_acpi_remove(struct platform_device *pdev)
static int sdhci_acpi_suspend(struct device *dev)
{
struct sdhci_acpi_host *c = dev_get_drvdata(dev);
struct sdhci_host *host = c->host;
return sdhci_suspend_host(c->host);
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
return sdhci_suspend_host(host);
}
static int sdhci_acpi_resume(struct device *dev)
@ -544,8 +546,12 @@ static int sdhci_acpi_resume(struct device *dev)
static int sdhci_acpi_runtime_suspend(struct device *dev)
{
struct sdhci_acpi_host *c = dev_get_drvdata(dev);
struct sdhci_host *host = c->host;
return sdhci_runtime_suspend_host(c->host);
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
return sdhci_runtime_suspend_host(host);
}
static int sdhci_acpi_runtime_resume(struct device *dev)

3
drivers/mmc/host/sdhci-brcmstb.c
View file

@ -29,6 +29,9 @@ static int sdhci_brcmstb_suspend(struct device *dev)
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
int res;
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
res = sdhci_suspend_host(host);
if (res)
return res;

129
drivers/mmc/host/sdhci-cadence.c
View file

@ -18,6 +18,7 @@
#include <linux/module.h>
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/of.h>
#include "sdhci-pltfm.h"
@ -40,6 +41,7 @@
#define SDHCI_CDNS_HRS06_MODE_MMC_DDR 0x3
#define SDHCI_CDNS_HRS06_MODE_MMC_HS200 0x4
#define SDHCI_CDNS_HRS06_MODE_MMC_HS400 0x5
#define SDHCI_CDNS_HRS06_MODE_MMC_HS400ES 0x6
/* SRS - Slot Register Set (SDHCI-compatible) */
#define SDHCI_CDNS_SRS_BASE 0x200
@ -54,6 +56,9 @@
#define SDHCI_CDNS_PHY_DLY_EMMC_LEGACY 0x06
#define SDHCI_CDNS_PHY_DLY_EMMC_SDR 0x07
#define SDHCI_CDNS_PHY_DLY_EMMC_DDR 0x08
#define SDHCI_CDNS_PHY_DLY_SDCLK 0x0b
#define SDHCI_CDNS_PHY_DLY_HSMMC 0x0c
#define SDHCI_CDNS_PHY_DLY_STROBE 0x0d
/*
* The tuned val register is 6 bit-wide, but not the whole of the range is
@ -64,13 +69,34 @@
struct sdhci_cdns_priv {
void __iomem *hrs_addr;
bool enhanced_strobe;
};
static void sdhci_cdns_write_phy_reg(struct sdhci_cdns_priv *priv,
u8 addr, u8 data)
struct sdhci_cdns_phy_cfg {
const char *property;
u8 addr;
};
static const struct sdhci_cdns_phy_cfg sdhci_cdns_phy_cfgs[] = {
{ "cdns,phy-input-delay-sd-highspeed", SDHCI_CDNS_PHY_DLY_SD_HS, },
{ "cdns,phy-input-delay-legacy", SDHCI_CDNS_PHY_DLY_SD_DEFAULT, },
{ "cdns,phy-input-delay-sd-uhs-sdr12", SDHCI_CDNS_PHY_DLY_UHS_SDR12, },
{ "cdns,phy-input-delay-sd-uhs-sdr25", SDHCI_CDNS_PHY_DLY_UHS_SDR25, },
{ "cdns,phy-input-delay-sd-uhs-sdr50", SDHCI_CDNS_PHY_DLY_UHS_SDR50, },
{ "cdns,phy-input-delay-sd-uhs-ddr50", SDHCI_CDNS_PHY_DLY_UHS_DDR50, },
{ "cdns,phy-input-delay-mmc-highspeed", SDHCI_CDNS_PHY_DLY_EMMC_SDR, },
{ "cdns,phy-input-delay-mmc-ddr", SDHCI_CDNS_PHY_DLY_EMMC_DDR, },
{ "cdns,phy-dll-delay-sdclk", SDHCI_CDNS_PHY_DLY_SDCLK, },
{ "cdns,phy-dll-delay-sdclk-hsmmc", SDHCI_CDNS_PHY_DLY_HSMMC, },
{ "cdns,phy-dll-delay-strobe", SDHCI_CDNS_PHY_DLY_STROBE, },
};
static int sdhci_cdns_write_phy_reg(struct sdhci_cdns_priv *priv,
u8 addr, u8 data)
{
void __iomem *reg = priv->hrs_addr + SDHCI_CDNS_HRS04;
u32 tmp;
int ret;
tmp = (data << SDHCI_CDNS_HRS04_WDATA_SHIFT) |
(addr << SDHCI_CDNS_HRS04_ADDR_SHIFT);
@ -79,17 +105,36 @@ static void sdhci_cdns_write_phy_reg(struct sdhci_cdns_priv *priv,
tmp |= SDHCI_CDNS_HRS04_WR;
writel(tmp, reg);
ret = readl_poll_timeout(reg, tmp, tmp & SDHCI_CDNS_HRS04_ACK, 0, 10);
if (ret)
return ret;
tmp &= ~SDHCI_CDNS_HRS04_WR;
writel(tmp, reg);
return 0;
}
static void sdhci_cdns_phy_init(struct sdhci_cdns_priv *priv)
static int sdhci_cdns_phy_init(struct device_node *np,
struct sdhci_cdns_priv *priv)
{
sdhci_cdns_write_phy_reg(priv, SDHCI_CDNS_PHY_DLY_SD_HS, 4);
sdhci_cdns_write_phy_reg(priv, SDHCI_CDNS_PHY_DLY_SD_DEFAULT, 4);
sdhci_cdns_write_phy_reg(priv, SDHCI_CDNS_PHY_DLY_EMMC_LEGACY, 9);
sdhci_cdns_write_phy_reg(priv, SDHCI_CDNS_PHY_DLY_EMMC_SDR, 2);
sdhci_cdns_write_phy_reg(priv, SDHCI_CDNS_PHY_DLY_EMMC_DDR, 3);
u32 val;
int ret, i;
for (i = 0; i < ARRAY_SIZE(sdhci_cdns_phy_cfgs); i++) {
ret = of_property_read_u32(np, sdhci_cdns_phy_cfgs[i].property,
&val);
if (ret)
continue;
ret = sdhci_cdns_write_phy_reg(priv,
sdhci_cdns_phy_cfgs[i].addr,
val);
if (ret)
return ret;
}
return 0;
}
static inline void *sdhci_cdns_priv(struct sdhci_host *host)
@ -103,16 +148,35 @@ static unsigned int sdhci_cdns_get_timeout_clock(struct sdhci_host *host)
{
/*
* Cadence's spec says the Timeout Clock Frequency is the same as the
* Base Clock Frequency. Divide it by 1000 to return a value in kHz.
* Base Clock Frequency.
*/
return host->max_clk / 1000;
return host->max_clk;
}
static void sdhci_cdns_set_emmc_mode(struct sdhci_cdns_priv *priv, u32 mode)
{
u32 tmp;
/* The speed mode for eMMC is selected by HRS06 register */
tmp = readl(priv->hrs_addr + SDHCI_CDNS_HRS06);
tmp &= ~SDHCI_CDNS_HRS06_MODE_MASK;
tmp |= mode;
writel(tmp, priv->hrs_addr + SDHCI_CDNS_HRS06);
}
static u32 sdhci_cdns_get_emmc_mode(struct sdhci_cdns_priv *priv)
{
u32 tmp;
tmp = readl(priv->hrs_addr + SDHCI_CDNS_HRS06);
return tmp & SDHCI_CDNS_HRS06_MODE_MASK;
}
static void sdhci_cdns_set_uhs_signaling(struct sdhci_host *host,
unsigned int timing)
{
struct sdhci_cdns_priv *priv = sdhci_cdns_priv(host);
u32 mode, tmp;
u32 mode;
switch (timing) {
case MMC_TIMING_MMC_HS:
@ -125,18 +189,17 @@ static void sdhci_cdns_set_uhs_signaling(struct sdhci_host *host,
mode = SDHCI_CDNS_HRS06_MODE_MMC_HS200;
break;
case MMC_TIMING_MMC_HS400:
mode = SDHCI_CDNS_HRS06_MODE_MMC_HS400;
if (priv->enhanced_strobe)
mode = SDHCI_CDNS_HRS06_MODE_MMC_HS400ES;
else
mode = SDHCI_CDNS_HRS06_MODE_MMC_HS400;
break;
default:
mode = SDHCI_CDNS_HRS06_MODE_SD;
break;
}
/* The speed mode for eMMC is selected by HRS06 register */
tmp = readl(priv->hrs_addr + SDHCI_CDNS_HRS06);
tmp &= ~SDHCI_CDNS_HRS06_MODE_MASK;
tmp |= mode;
writel(tmp, priv->hrs_addr + SDHCI_CDNS_HRS06);
sdhci_cdns_set_emmc_mode(priv, mode);
/* For SD, fall back to the default handler */
if (mode == SDHCI_CDNS_HRS06_MODE_SD)
@ -213,6 +276,26 @@ static int sdhci_cdns_execute_tuning(struct mmc_host *mmc, u32 opcode)
return sdhci_cdns_set_tune_val(host, end_of_streak - max_streak / 2);
}
static void sdhci_cdns_hs400_enhanced_strobe(struct mmc_host *mmc,
struct mmc_ios *ios)
{
struct sdhci_host *host = mmc_priv(mmc);
struct sdhci_cdns_priv *priv = sdhci_cdns_priv(host);
u32 mode;
priv->enhanced_strobe = ios->enhanced_strobe;
mode = sdhci_cdns_get_emmc_mode(priv);
if (mode == SDHCI_CDNS_HRS06_MODE_MMC_HS400 && ios->enhanced_strobe)
sdhci_cdns_set_emmc_mode(priv,
SDHCI_CDNS_HRS06_MODE_MMC_HS400ES);
if (mode == SDHCI_CDNS_HRS06_MODE_MMC_HS400ES && !ios->enhanced_strobe)
sdhci_cdns_set_emmc_mode(priv,
SDHCI_CDNS_HRS06_MODE_MMC_HS400);
}
static int sdhci_cdns_probe(struct platform_device *pdev)
{
struct sdhci_host *host;
@ -220,8 +303,9 @@ static int sdhci_cdns_probe(struct platform_device *pdev)
struct sdhci_cdns_priv *priv;
struct clk *clk;
int ret;
struct device *dev = &pdev->dev;
clk = devm_clk_get(&pdev->dev, NULL);
clk = devm_clk_get(dev, NULL);
if (IS_ERR(clk))
return PTR_ERR(clk);
@ -240,14 +324,21 @@ static int sdhci_cdns_probe(struct platform_device *pdev)
priv = sdhci_cdns_priv(host);
priv->hrs_addr = host->ioaddr;
priv->enhanced_strobe = false;
host->ioaddr += SDHCI_CDNS_SRS_BASE;
host->mmc_host_ops.execute_tuning = sdhci_cdns_execute_tuning;
host->mmc_host_ops.hs400_enhanced_strobe =
sdhci_cdns_hs400_enhanced_strobe;
sdhci_get_of_property(pdev);
ret = mmc_of_parse(host->mmc);
if (ret)
goto free;
sdhci_cdns_phy_init(priv);
ret = sdhci_cdns_phy_init(dev->of_node, priv);
if (ret)
goto free;
ret = sdhci_add_host(host);
if (ret)

32
drivers/mmc/host/sdhci-esdhc-imx.c
View file

@ -889,6 +889,28 @@ static void esdhc_set_strobe_dll(struct sdhci_host *host)
}
}
static void esdhc_reset_tuning(struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct pltfm_imx_data *imx_data = sdhci_pltfm_priv(pltfm_host);
u32 ctrl;
/* Rest the tuning circurt */
if (esdhc_is_usdhc(imx_data)) {
if (imx_data->socdata->flags & ESDHC_FLAG_MAN_TUNING) {
ctrl = readl(host->ioaddr + ESDHC_MIX_CTRL);
ctrl &= ~ESDHC_MIX_CTRL_SMPCLK_SEL;
ctrl &= ~ESDHC_MIX_CTRL_FBCLK_SEL;
writel(ctrl, host->ioaddr + ESDHC_MIX_CTRL);
writel(0, host->ioaddr + ESDHC_TUNE_CTRL_STATUS);
} else if (imx_data->socdata->flags & ESDHC_FLAG_STD_TUNING) {
ctrl = readl(host->ioaddr + SDHCI_ACMD12_ERR);
ctrl &= ~ESDHC_MIX_CTRL_SMPCLK_SEL;
writel(ctrl, host->ioaddr + SDHCI_ACMD12_ERR);
}
}
}
static void esdhc_set_uhs_signaling(struct sdhci_host *host, unsigned timing)
{
u32 m;
@ -932,6 +954,10 @@ static void esdhc_set_uhs_signaling(struct sdhci_host *host, unsigned timing)
host->ops->set_clock(host, host->clock);
esdhc_set_strobe_dll(host);
break;
case MMC_TIMING_LEGACY:
default:
esdhc_reset_tuning(host);
break;
}
esdhc_change_pinstate(host, timing);
@ -1323,6 +1349,9 @@ static int sdhci_esdhc_suspend(struct device *dev)
{
struct sdhci_host *host = dev_get_drvdata(dev);
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
return sdhci_suspend_host(host);
}
@ -1347,6 +1376,9 @@ static int sdhci_esdhc_runtime_suspend(struct device *dev)
ret = sdhci_runtime_suspend_host(host);
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
if (!sdhci_sdio_irq_enabled(host)) {
clk_disable_unprepare(imx_data->clk_per);
clk_disable_unprepare(imx_data->clk_ipg);

7
drivers/mmc/host/sdhci-esdhc.h
View file

@ -37,6 +37,7 @@
/* Protocol Control Register */
#define ESDHC_PROCTL 0x28
#define ESDHC_VOLT_SEL 0x00000400
#define ESDHC_CTRL_4BITBUS (0x1 << 1)
#define ESDHC_CTRL_8BITBUS (0x2 << 1)
#define ESDHC_CTRL_BUSWIDTH_MASK (0x3 << 1)
@ -52,8 +53,14 @@
#define ESDHC_CLOCK_HCKEN 0x00000002
#define ESDHC_CLOCK_IPGEN 0x00000001
/* Tuning Block Control Register */
#define ESDHC_TBCTL 0x120
#define ESDHC_TB_EN 0x00000004
/* Control Register for DMA transfer */
#define ESDHC_DMA_SYSCTL 0x40c
#define ESDHC_PERIPHERAL_CLK_SEL 0x00080000
#define ESDHC_FLUSH_ASYNC_FIFO 0x00040000
#define ESDHC_DMA_SNOOP 0x00000040
#endif /* _DRIVERS_MMC_SDHCI_ESDHC_H */

8
drivers/mmc/host/sdhci-msm.c
View file

@ -991,12 +991,8 @@ static void sdhci_msm_set_uhs_signaling(struct sdhci_host *host,
mmc_hostname(host->mmc), host->clock, uhs, ctrl_2);
sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
spin_unlock_irq(&host->lock);
if (mmc->ios.timing == MMC_TIMING_MMC_HS400)
sdhci_msm_hs400(host, &mmc->ios);
spin_lock_irq(&host->lock);
}
static void sdhci_msm_voltage_switch(struct sdhci_host *host)
@ -1089,13 +1085,9 @@ static void sdhci_msm_set_clock(struct sdhci_host *host, unsigned int clock)
goto out;
}
spin_unlock_irq(&host->lock);
sdhci_msm_hc_select_mode(host);
msm_set_clock_rate_for_bus_mode(host, clock);
spin_lock_irq(&host->lock);
out:
__sdhci_msm_set_clock(host, clock);
}

26
drivers/mmc/host/sdhci-of-arasan.c
View file

@ -157,21 +157,6 @@ static int sdhci_arasan_syscon_write(struct sdhci_host *host,
return ret;
}
static unsigned int sdhci_arasan_get_timeout_clock(struct sdhci_host *host)
{
unsigned long freq;
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
/* SDHCI timeout clock is in kHz */
freq = DIV_ROUND_UP(clk_get_rate(pltfm_host->clk), 1000);
/* or in MHz */
if (host->caps & SDHCI_TIMEOUT_CLK_UNIT)
freq = DIV_ROUND_UP(freq, 1000);
return freq;
}
static void sdhci_arasan_set_clock(struct sdhci_host *host, unsigned int clock)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
@ -194,9 +179,7 @@ static void sdhci_arasan_set_clock(struct sdhci_host *host, unsigned int clock)
* through low speeds without power cycling.
*/
sdhci_set_clock(host, host->max_clk);
spin_unlock_irq(&host->lock);
phy_power_on(sdhci_arasan->phy);
spin_lock_irq(&host->lock);
sdhci_arasan->is_phy_on = true;
/*
@ -215,18 +198,14 @@ static void sdhci_arasan_set_clock(struct sdhci_host *host, unsigned int clock)
}
if (ctrl_phy && sdhci_arasan->is_phy_on) {
spin_unlock_irq(&host->lock);
phy_power_off(sdhci_arasan->phy);
spin_lock_irq(&host->lock);
sdhci_arasan->is_phy_on = false;
}
sdhci_set_clock(host, clock);
if (ctrl_phy) {
spin_unlock_irq(&host->lock);
phy_power_on(sdhci_arasan->phy);
spin_lock_irq(&host->lock);
sdhci_arasan->is_phy_on = true;
}
}
@ -286,7 +265,7 @@ static int sdhci_arasan_voltage_switch(struct mmc_host *mmc,
static struct sdhci_ops sdhci_arasan_ops = {
.set_clock = sdhci_arasan_set_clock,
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.get_timeout_clock = sdhci_arasan_get_timeout_clock,
.get_timeout_clock = sdhci_pltfm_clk_get_max_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_arasan_reset,
.set_uhs_signaling = sdhci_set_uhs_signaling,
@ -315,6 +294,9 @@ static int sdhci_arasan_suspend(struct device *dev)
struct sdhci_arasan_data *sdhci_arasan = sdhci_pltfm_priv(pltfm_host);
int ret;
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
ret = sdhci_suspend_host(host);
if (ret)
return ret;

5
drivers/mmc/host/sdhci-of-at91.c
View file

@ -98,9 +98,7 @@ static void sdhci_at91_set_power(struct sdhci_host *host, unsigned char mode,
if (!IS_ERR(host->mmc->supply.vmmc)) {
struct mmc_host *mmc = host->mmc;
spin_unlock_irq(&host->lock);
mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);
spin_lock_irq(&host->lock);
}
sdhci_set_power_noreg(host, mode, vdd);
}
@ -140,6 +138,9 @@ static int sdhci_at91_runtime_suspend(struct device *dev)
ret = sdhci_runtime_suspend_host(host);
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
clk_disable_unprepare(priv->gck);
clk_disable_unprepare(priv->hclock);
clk_disable_unprepare(priv->mainck);

194
drivers/mmc/host/sdhci-of-esdhc.c
View file

@ -16,9 +16,12 @@
#include <linux/err.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/sys_soc.h>
#include <linux/clk.h>
#include <linux/ktime.h>
#include <linux/mmc/host.h>
#include "sdhci-pltfm.h"
#include "sdhci-esdhc.h"
@ -30,6 +33,7 @@ struct sdhci_esdhc {
u8 vendor_ver;
u8 spec_ver;
bool quirk_incorrect_hostver;
unsigned int peripheral_clock;
};
/**
@ -414,15 +418,25 @@ static int esdhc_of_enable_dma(struct sdhci_host *host)
static unsigned int esdhc_of_get_max_clock(struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_esdhc *esdhc = sdhci_pltfm_priv(pltfm_host);
return pltfm_host->clock;
if (esdhc->peripheral_clock)
return esdhc->peripheral_clock;
else
return pltfm_host->clock;
}
static unsigned int esdhc_of_get_min_clock(struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_esdhc *esdhc = sdhci_pltfm_priv(pltfm_host);
unsigned int clock;
return pltfm_host->clock / 256 / 16;
if (esdhc->peripheral_clock)
clock = esdhc->peripheral_clock;
else
clock = pltfm_host->clock;
return clock / 256 / 16;
}
static void esdhc_of_set_clock(struct sdhci_host *host, unsigned int clock)
@ -431,7 +445,7 @@ static void esdhc_of_set_clock(struct sdhci_host *host, unsigned int clock)
struct sdhci_esdhc *esdhc = sdhci_pltfm_priv(pltfm_host);
int pre_div = 1;
int div = 1;
u32 timeout;
ktime_t timeout;
u32 temp;
host->mmc->actual_clock = 0;
@ -443,6 +457,20 @@ static void esdhc_of_set_clock(struct sdhci_host *host, unsigned int clock)
if (esdhc->vendor_ver < VENDOR_V_23)
pre_div = 2;
/*
* Limit SD clock to 167MHz for ls1046a according to its datasheet
*/
if (clock > 167000000 &&
of_find_compatible_node(NULL, NULL, "fsl,ls1046a-esdhc"))
clock = 167000000;
/*
* Limit SD clock to 125MHz for ls1012a according to its datasheet
*/
if (clock > 125000000 &&
of_find_compatible_node(NULL, NULL, "fsl,ls1012a-esdhc"))
clock = 125000000;
/* Workaround to reduce the clock frequency for p1010 esdhc */
if (of_find_compatible_node(NULL, NULL, "fsl,p1010-esdhc")) {
if (clock > 20000000)
@ -475,15 +503,14 @@ static void esdhc_of_set_clock(struct sdhci_host *host, unsigned int clock)
sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL);
/* Wait max 20 ms */
timeout = 20;
timeout = ktime_add_ms(ktime_get(), 20);
while (!(sdhci_readl(host, ESDHC_PRSSTAT) & ESDHC_CLOCK_STABLE)) {
if (timeout == 0) {
if (ktime_after(ktime_get(), timeout)) {
pr_err("%s: Internal clock never stabilised.\n",
mmc_hostname(host->mmc));
return;
}
timeout--;
mdelay(1);
udelay(10);
}
temp |= ESDHC_CLOCK_SDCLKEN;
@ -512,6 +539,33 @@ static void esdhc_pltfm_set_bus_width(struct sdhci_host *host, int width)
sdhci_writel(host, ctrl, ESDHC_PROCTL);
}
static void esdhc_clock_enable(struct sdhci_host *host, bool enable)
{
u32 val;
ktime_t timeout;
val = sdhci_readl(host, ESDHC_SYSTEM_CONTROL);
if (enable)
val |= ESDHC_CLOCK_SDCLKEN;
else
val &= ~ESDHC_CLOCK_SDCLKEN;
sdhci_writel(host, val, ESDHC_SYSTEM_CONTROL);
/* Wait max 20 ms */
timeout = ktime_add_ms(ktime_get(), 20);
val = ESDHC_CLOCK_STABLE;
while (!(sdhci_readl(host, ESDHC_PRSSTAT) & val)) {
if (ktime_after(ktime_get(), timeout)) {
pr_err("%s: Internal clock never stabilised.\n",
mmc_hostname(host->mmc));
break;
}
udelay(10);
}
}
static void esdhc_reset(struct sdhci_host *host, u8 mask)
{
sdhci_reset(host, mask);
@ -520,6 +574,95 @@ static void esdhc_reset(struct sdhci_host *host, u8 mask)
sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
}
/* The SCFG, Supplemental Configuration Unit, provides SoC specific
* configuration and status registers for the device. There is a
* SDHC IO VSEL control register on SCFG for some platforms. It's
* used to support SDHC IO voltage switching.
*/
static const struct of_device_id scfg_device_ids[] = {
{ .compatible = "fsl,t1040-scfg", },
{ .compatible = "fsl,ls1012a-scfg", },
{ .compatible = "fsl,ls1046a-scfg", },
{}
};
/* SDHC IO VSEL control register definition */
#define SCFG_SDHCIOVSELCR 0x408
#define SDHCIOVSELCR_TGLEN 0x80000000
#define SDHCIOVSELCR_VSELVAL 0x60000000
#define SDHCIOVSELCR_SDHC_VS 0x00000001
static int esdhc_signal_voltage_switch(struct mmc_host *mmc,
struct mmc_ios *ios)
{
struct sdhci_host *host = mmc_priv(mmc);
struct device_node *scfg_node;
void __iomem *scfg_base = NULL;
u32 sdhciovselcr;
u32 val;
/*
* Signal Voltage Switching is only applicable for Host Controllers
* v3.00 and above.
*/
if (host->version < SDHCI_SPEC_300)
return 0;
val = sdhci_readl(host, ESDHC_PROCTL);
switch (ios->signal_voltage) {
case MMC_SIGNAL_VOLTAGE_330:
val &= ~ESDHC_VOLT_SEL;
sdhci_writel(host, val, ESDHC_PROCTL);
return 0;
case MMC_SIGNAL_VOLTAGE_180:
scfg_node = of_find_matching_node(NULL, scfg_device_ids);
if (scfg_node)
scfg_base = of_iomap(scfg_node, 0);
if (scfg_base) {
sdhciovselcr = SDHCIOVSELCR_TGLEN |
SDHCIOVSELCR_VSELVAL;
iowrite32be(sdhciovselcr,
scfg_base + SCFG_SDHCIOVSELCR);
val |= ESDHC_VOLT_SEL;
sdhci_writel(host, val, ESDHC_PROCTL);
mdelay(5);
sdhciovselcr = SDHCIOVSELCR_TGLEN |
SDHCIOVSELCR_SDHC_VS;
iowrite32be(sdhciovselcr,
scfg_base + SCFG_SDHCIOVSELCR);
iounmap(scfg_base);
} else {
val |= ESDHC_VOLT_SEL;
sdhci_writel(host, val, ESDHC_PROCTL);
}
return 0;
default:
return 0;
}
}
static int esdhc_execute_tuning(struct mmc_host *mmc, u32 opcode)
{
struct sdhci_host *host = mmc_priv(mmc);
u32 val;
/* Use tuning block for tuning procedure */
esdhc_clock_enable(host, false);
val = sdhci_readl(host, ESDHC_DMA_SYSCTL);
val |= ESDHC_FLUSH_ASYNC_FIFO;
sdhci_writel(host, val, ESDHC_DMA_SYSCTL);
val = sdhci_readl(host, ESDHC_TBCTL);
val |= ESDHC_TB_EN;
sdhci_writel(host, val, ESDHC_TBCTL);
esdhc_clock_enable(host, true);
return sdhci_execute_tuning(mmc, opcode);
}
#ifdef CONFIG_PM_SLEEP
static u32 esdhc_proctl;
static int esdhc_of_suspend(struct device *dev)
@ -528,6 +671,9 @@ static int esdhc_of_suspend(struct device *dev)
esdhc_proctl = sdhci_readl(host, SDHCI_HOST_CONTROL);
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
return sdhci_suspend_host(host);
}
@ -610,6 +756,9 @@ static void esdhc_init(struct platform_device *pdev, struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host;
struct sdhci_esdhc *esdhc;
struct device_node *np;
struct clk *clk;
u32 val;
u16 host_ver;
pltfm_host = sdhci_priv(host);
@ -623,6 +772,32 @@ static void esdhc_init(struct platform_device *pdev, struct sdhci_host *host)
esdhc->quirk_incorrect_hostver = true;
else
esdhc->quirk_incorrect_hostver = false;
np = pdev->dev.of_node;
clk = of_clk_get(np, 0);
if (!IS_ERR(clk)) {
/*
* esdhc->peripheral_clock would be assigned with a value
* which is eSDHC base clock when use periperal clock.
* For ls1046a, the clock value got by common clk API is
* peripheral clock while the eSDHC base clock is 1/2
* peripheral clock.
*/
if (of_device_is_compatible(np, "fsl,ls1046a-esdhc"))
esdhc->peripheral_clock = clk_get_rate(clk) / 2;
else
esdhc->peripheral_clock = clk_get_rate(clk);
clk_put(clk);
}
if (esdhc->peripheral_clock) {
esdhc_clock_enable(host, false);
val = sdhci_readl(host, ESDHC_DMA_SYSCTL);
val |= ESDHC_PERIPHERAL_CLK_SEL;
sdhci_writel(host, val, ESDHC_DMA_SYSCTL);
esdhc_clock_enable(host, true);
}
}
static int sdhci_esdhc_probe(struct platform_device *pdev)
@ -645,6 +820,11 @@ static int sdhci_esdhc_probe(struct platform_device *pdev)
if (IS_ERR(host))
return PTR_ERR(host);
host->mmc_host_ops.start_signal_voltage_switch =
esdhc_signal_voltage_switch;
host->mmc_host_ops.execute_tuning = esdhc_execute_tuning;
host->tuning_delay = 1;
esdhc_init(pdev, host);
sdhci_get_of_property(pdev);

562
drivers/mmc/host/sdhci-pci-core.c
View file

@ -12,6 +12,7 @@
* - JMicron (hardware and technical support)
*/
#include <linux/string.h>
#include <linux/delay.h>
#include <linux/highmem.h>
#include <linux/module.h>
@ -36,10 +37,138 @@
static int sdhci_pci_enable_dma(struct sdhci_host *host);
static void sdhci_pci_set_bus_width(struct sdhci_host *host, int width);
static void sdhci_pci_hw_reset(struct sdhci_host *host);
static int sdhci_pci_select_drive_strength(struct sdhci_host *host,
struct mmc_card *card,
unsigned int max_dtr, int host_drv,
int card_drv, int *drv_type);
#ifdef CONFIG_PM_SLEEP
static int __sdhci_pci_suspend_host(struct sdhci_pci_chip *chip)
{
int i, ret;
for (i = 0; i < chip->num_slots; i++) {
struct sdhci_pci_slot *slot = chip->slots[i];
struct sdhci_host *host;
if (!slot)
continue;
host = slot->host;
if (chip->pm_retune && host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
ret = sdhci_suspend_host(host);
if (ret)
goto err_pci_suspend;
if (host->mmc->pm_flags & MMC_PM_WAKE_SDIO_IRQ)
sdhci_enable_irq_wakeups(host);
}
return 0;
err_pci_suspend:
while (--i >= 0)
sdhci_resume_host(chip->slots[i]->host);
return ret;
}
static int sdhci_pci_init_wakeup(struct sdhci_pci_chip *chip)
{
mmc_pm_flag_t pm_flags = 0;
int i;
for (i = 0; i < chip->num_slots; i++) {
struct sdhci_pci_slot *slot = chip->slots[i];
if (slot)
pm_flags |= slot->host->mmc->pm_flags;
}
return device_init_wakeup(&chip->pdev->dev,
(pm_flags & MMC_PM_KEEP_POWER) &&
(pm_flags & MMC_PM_WAKE_SDIO_IRQ));
}
static int sdhci_pci_suspend_host(struct sdhci_pci_chip *chip)
{
int ret;
ret = __sdhci_pci_suspend_host(chip);
if (ret)
return ret;
sdhci_pci_init_wakeup(chip);
return 0;
}
int sdhci_pci_resume_host(struct sdhci_pci_chip *chip)
{
struct sdhci_pci_slot *slot;
int i, ret;
for (i = 0; i < chip->num_slots; i++) {
slot = chip->slots[i];
if (!slot)
continue;
ret = sdhci_resume_host(slot->host);
if (ret)
return ret;
}
return 0;
}
#endif
#ifdef CONFIG_PM
static int sdhci_pci_runtime_suspend_host(struct sdhci_pci_chip *chip)
{
struct sdhci_pci_slot *slot;
struct sdhci_host *host;
int i, ret;
for (i = 0; i < chip->num_slots; i++) {
slot = chip->slots[i];
if (!slot)
continue;
host = slot->host;
ret = sdhci_runtime_suspend_host(host);
if (ret)
goto err_pci_runtime_suspend;
if (chip->rpm_retune &&
host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
}
return 0;
err_pci_runtime_suspend:
while (--i >= 0)
sdhci_runtime_resume_host(chip->slots[i]->host);
return ret;
}
static int sdhci_pci_runtime_resume_host(struct sdhci_pci_chip *chip)
{
struct sdhci_pci_slot *slot;
int i, ret;
for (i = 0; i < chip->num_slots; i++) {
slot = chip->slots[i];
if (!slot)
continue;
ret = sdhci_runtime_resume_host(slot->host);
if (ret)
return ret;
}
return 0;
}
#endif
/*****************************************************************************\
* *
@ -71,14 +200,16 @@ static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int ricoh_mmc_resume(struct sdhci_pci_chip *chip)
{
/* Apply a delay to allow controller to settle */
/* Otherwise it becomes confused if card state changed
during suspend */
msleep(500);
return 0;
return sdhci_pci_resume_host(chip);
}
#endif
static const struct sdhci_pci_fixes sdhci_ricoh = {
.probe = ricoh_probe,
@ -89,7 +220,9 @@ static const struct sdhci_pci_fixes sdhci_ricoh = {
static const struct sdhci_pci_fixes sdhci_ricoh_mmc = {
.probe_slot = ricoh_mmc_probe_slot,
#ifdef CONFIG_PM_SLEEP
.resume = ricoh_mmc_resume,
#endif
.quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
SDHCI_QUIRK_CLOCK_BEFORE_RESET |
SDHCI_QUIRK_NO_CARD_NO_RESET |
@ -259,6 +392,81 @@ static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
.probe_slot = pch_hc_probe_slot,
};
enum {
INTEL_DSM_FNS = 0,
INTEL_DSM_DRV_STRENGTH = 9,
INTEL_DSM_D3_RETUNE = 10,
};
struct intel_host {
u32 dsm_fns;
int drv_strength;
bool d3_retune;
};
const u8 intel_dsm_uuid[] = {
0xA5, 0x3E, 0xC1, 0xF6, 0xCD, 0x65, 0x1F, 0x46,
0xAB, 0x7A, 0x29, 0xF7, 0xE8, 0xD5, 0xBD, 0x61,
};
static int __intel_dsm(struct intel_host *intel_host, struct device *dev,
unsigned int fn, u32 *result)
{
union acpi_object *obj;
int err = 0;
size_t len;
obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), intel_dsm_uuid, 0, fn, NULL);
if (!obj)
return -EOPNOTSUPP;
if (obj->type != ACPI_TYPE_BUFFER || obj->buffer.length < 1) {
err = -EINVAL;
goto out;
}
len = min_t(size_t, obj->buffer.length, 4);
*result = 0;
memcpy(result, obj->buffer.pointer, len);
out:
ACPI_FREE(obj);
return err;
}
static int intel_dsm(struct intel_host *intel_host, struct device *dev,
unsigned int fn, u32 *result)
{
if (fn > 31 || !(intel_host->dsm_fns & (1 << fn)))
return -EOPNOTSUPP;
return __intel_dsm(intel_host, dev, fn, result);
}
static void intel_dsm_init(struct intel_host *intel_host, struct device *dev,
struct mmc_host *mmc)
{
int err;
u32 val;
err = __intel_dsm(intel_host, dev, INTEL_DSM_FNS, &intel_host->dsm_fns);
if (err) {
pr_debug("%s: DSM not supported, error %d\n",
mmc_hostname(mmc), err);
return;
}
pr_debug("%s: DSM function mask %#x\n",
mmc_hostname(mmc), intel_host->dsm_fns);
err = intel_dsm(intel_host, dev, INTEL_DSM_DRV_STRENGTH, &val);
intel_host->drv_strength = err ? 0 : val;
err = intel_dsm(intel_host, dev, INTEL_DSM_D3_RETUNE, &val);
intel_host->d3_retune = err ? true : !!val;
}
static void sdhci_pci_int_hw_reset(struct sdhci_host *host)
{
u8 reg;
@ -274,67 +482,15 @@ static void sdhci_pci_int_hw_reset(struct sdhci_host *host)
usleep_range(300, 1000);
}
static int spt_select_drive_strength(struct sdhci_host *host,
struct mmc_card *card,
unsigned int max_dtr,
int host_drv, int card_drv, int *drv_type)
static int intel_select_drive_strength(struct mmc_card *card,
unsigned int max_dtr, int host_drv,
int card_drv, int *drv_type)
{
int drive_strength;
struct sdhci_host *host = mmc_priv(card->host);
struct sdhci_pci_slot *slot = sdhci_priv(host);
struct intel_host *intel_host = sdhci_pci_priv(slot);
if (sdhci_pci_spt_drive_strength > 0)
drive_strength = sdhci_pci_spt_drive_strength & 0xf;
else
drive_strength = 0; /* Default 50-ohm */
if ((mmc_driver_type_mask(drive_strength) & card_drv) == 0)
drive_strength = 0; /* Default 50-ohm */
return drive_strength;
}
/* Try to read the drive strength from the card */
static void spt_read_drive_strength(struct sdhci_host *host)
{
u32 val, i, t;
u16 m;
if (sdhci_pci_spt_drive_strength)
return;
sdhci_pci_spt_drive_strength = -1;
m = sdhci_readw(host, SDHCI_HOST_CONTROL2) & 0x7;
if (m != 3 && m != 5)
return;
val = sdhci_readl(host, SDHCI_PRESENT_STATE);
if (val & 0x3)
return;
sdhci_writel(host, 0x007f0023, SDHCI_INT_ENABLE);
sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE);
sdhci_writew(host, 0x10, SDHCI_TRANSFER_MODE);
sdhci_writeb(host, 0xe, SDHCI_TIMEOUT_CONTROL);
sdhci_writew(host, 512, SDHCI_BLOCK_SIZE);
sdhci_writew(host, 1, SDHCI_BLOCK_COUNT);
sdhci_writel(host, 0, SDHCI_ARGUMENT);
sdhci_writew(host, 0x83b, SDHCI_COMMAND);
for (i = 0; i < 1000; i++) {
val = sdhci_readl(host, SDHCI_INT_STATUS);
if (val & 0xffff8000)
return;
if (val & 0x20)
break;
udelay(1);
}
val = sdhci_readl(host, SDHCI_PRESENT_STATE);
if (!(val & 0x800))
return;
for (i = 0; i < 47; i++)
val = sdhci_readl(host, SDHCI_BUFFER);
t = val & 0xf00;
if (t != 0x200 && t != 0x300)
return;
sdhci_pci_spt_drive_strength = 0x10 | ((val >> 12) & 0xf);
return intel_host->drv_strength;
}
static int bxt_get_cd(struct mmc_host *mmc)
@ -359,8 +515,57 @@ static int bxt_get_cd(struct mmc_host *mmc)
return ret;
}
#define SDHCI_INTEL_PWR_TIMEOUT_CNT 20
#define SDHCI_INTEL_PWR_TIMEOUT_UDELAY 100
static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode,
unsigned short vdd)
{
int cntr;
u8 reg;
sdhci_set_power(host, mode, vdd);
if (mode == MMC_POWER_OFF)
return;
/*
* Bus power might not enable after D3 -> D0 transition due to the
* present state not yet having propagated. Retry for up to 2ms.
*/
for (cntr = 0; cntr < SDHCI_INTEL_PWR_TIMEOUT_CNT; cntr++) {
reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
if (reg & SDHCI_POWER_ON)
break;
udelay(SDHCI_INTEL_PWR_TIMEOUT_UDELAY);
reg |= SDHCI_POWER_ON;
sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
}
}
static const struct sdhci_ops sdhci_intel_byt_ops = {
.set_clock = sdhci_set_clock,
.set_power = sdhci_intel_set_power,
.enable_dma = sdhci_pci_enable_dma,
.set_bus_width = sdhci_pci_set_bus_width,
.reset = sdhci_reset,
.set_uhs_signaling = sdhci_set_uhs_signaling,
.hw_reset = sdhci_pci_hw_reset,
};
static void byt_read_dsm(struct sdhci_pci_slot *slot)
{
struct intel_host *intel_host = sdhci_pci_priv(slot);
struct device *dev = &slot->chip->pdev->dev;
struct mmc_host *mmc = slot->host->mmc;
intel_dsm_init(intel_host, dev, mmc);
slot->chip->rpm_retune = intel_host->d3_retune;
}
static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
{
byt_read_dsm(slot);
slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR |
MMC_CAP_CMD_DURING_TFR |
@ -369,10 +574,8 @@ static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
slot->hw_reset = sdhci_pci_int_hw_reset;
if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BSW_EMMC)
slot->host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */
if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_SPT_EMMC) {
spt_read_drive_strength(slot->host);
slot->select_drive_strength = spt_select_drive_strength;
}
slot->host->mmc_host_ops.select_drive_strength =
intel_select_drive_strength;
return 0;
}
@ -405,6 +608,8 @@ static int ni_byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
{
int err;
byt_read_dsm(slot);
err = ni_set_max_freq(slot);
if (err)
return err;
@ -416,6 +621,7 @@ static int ni_byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
{
byt_read_dsm(slot);
slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
MMC_CAP_WAIT_WHILE_BUSY;
return 0;
@ -423,63 +629,20 @@ static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
static int byt_sd_probe_slot(struct sdhci_pci_slot *slot)
{
slot->host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY;
byt_read_dsm(slot);
slot->host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY |
MMC_CAP_AGGRESSIVE_PM;
slot->cd_idx = 0;
slot->cd_override_level = true;
if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXT_SD ||
slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXTM_SD ||
slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_APL_SD ||
slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_SD) {
slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_SD)
slot->host->mmc_host_ops.get_cd = bxt_get_cd;
slot->host->mmc->caps |= MMC_CAP_AGGRESSIVE_PM;
}
return 0;
}
#define SDHCI_INTEL_PWR_TIMEOUT_CNT 20
#define SDHCI_INTEL_PWR_TIMEOUT_UDELAY 100
static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode,
unsigned short vdd)
{
int cntr;
u8 reg;
sdhci_set_power(host, mode, vdd);
if (mode == MMC_POWER_OFF)
return;
spin_unlock_irq(&host->lock);
/*
* Bus power might not enable after D3 -> D0 transition due to the
* present state not yet having propagated. Retry for up to 2ms.
*/
for (cntr = 0; cntr < SDHCI_INTEL_PWR_TIMEOUT_CNT; cntr++) {
reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
if (reg & SDHCI_POWER_ON)
break;
udelay(SDHCI_INTEL_PWR_TIMEOUT_UDELAY);
reg |= SDHCI_POWER_ON;
sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
}
spin_lock_irq(&host->lock);
}
static const struct sdhci_ops sdhci_intel_byt_ops = {
.set_clock = sdhci_set_clock,
.set_power = sdhci_intel_set_power,
.enable_dma = sdhci_pci_enable_dma,
.set_bus_width = sdhci_pci_set_bus_width,
.reset = sdhci_reset,
.set_uhs_signaling = sdhci_set_uhs_signaling,
.hw_reset = sdhci_pci_hw_reset,
.select_drive_strength = sdhci_pci_select_drive_strength,
};
static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
.allow_runtime_pm = true,
.probe_slot = byt_emmc_probe_slot,
@ -488,6 +651,7 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
SDHCI_QUIRK2_STOP_WITH_TC,
.ops = &sdhci_intel_byt_ops,
.priv_size = sizeof(struct intel_host),
};
static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = {
@ -497,6 +661,7 @@ static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = {
.allow_runtime_pm = true,
.probe_slot = ni_byt_sdio_probe_slot,
.ops = &sdhci_intel_byt_ops,
.priv_size = sizeof(struct intel_host),
};
static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
@ -506,6 +671,7 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
.allow_runtime_pm = true,
.probe_slot = byt_sdio_probe_slot,
.ops = &sdhci_intel_byt_ops,
.priv_size = sizeof(struct intel_host),
};
static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
@ -517,6 +683,7 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
.own_cd_for_runtime_pm = true,
.probe_slot = byt_sd_probe_slot,
.ops = &sdhci_intel_byt_ops,
.priv_size = sizeof(struct intel_host),
};
/* Define Host controllers for Intel Merrifield platform */
@ -719,9 +886,14 @@ static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead)
jmicron_enable_mmc(slot->host, 0);
}
#ifdef CONFIG_PM_SLEEP
static int jmicron_suspend(struct sdhci_pci_chip *chip)
{
int i;
int i, ret;
ret = __sdhci_pci_suspend_host(chip);
if (ret)
return ret;
if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
@ -729,6 +901,8 @@ static int jmicron_suspend(struct sdhci_pci_chip *chip)
jmicron_enable_mmc(chip->slots[i]->host, 0);
}
sdhci_pci_init_wakeup(chip);
return 0;
}
@ -748,15 +922,18 @@ static int jmicron_resume(struct sdhci_pci_chip *chip)
return ret;
}
return 0;
return sdhci_pci_resume_host(chip);
}
#endif
static const struct sdhci_pci_fixes sdhci_o2 = {
.probe = sdhci_pci_o2_probe,
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
.quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
.probe_slot = sdhci_pci_o2_probe_slot,
#ifdef CONFIG_PM_SLEEP
.resume = sdhci_pci_o2_resume,
#endif
};
static const struct sdhci_pci_fixes sdhci_jmicron = {
@ -765,8 +942,10 @@ static const struct sdhci_pci_fixes sdhci_jmicron = {
.probe_slot = jmicron_probe_slot,
.remove_slot = jmicron_remove_slot,
#ifdef CONFIG_PM_SLEEP
.suspend = jmicron_suspend,
.resume = jmicron_resume,
#endif
};
/* SysKonnect CardBus2SDIO extra registers */
@ -1617,20 +1796,6 @@ static void sdhci_pci_hw_reset(struct sdhci_host *host)
slot->hw_reset(host);
}
static int sdhci_pci_select_drive_strength(struct sdhci_host *host,
struct mmc_card *card,
unsigned int max_dtr, int host_drv,
int card_drv, int *drv_type)
{
struct sdhci_pci_slot *slot = sdhci_priv(host);
if (!slot->select_drive_strength)
return 0;
return slot->select_drive_strength(host, card, max_dtr, host_drv,
card_drv, drv_type);
}
static const struct sdhci_ops sdhci_pci_ops = {
.set_clock = sdhci_set_clock,
.enable_dma = sdhci_pci_enable_dma,
@ -1638,7 +1803,6 @@ static const struct sdhci_ops sdhci_pci_ops = {
.reset = sdhci_reset,
.set_uhs_signaling = sdhci_set_uhs_signaling,
.hw_reset = sdhci_pci_hw_reset,
.select_drive_strength = sdhci_pci_select_drive_strength,
};
/*****************************************************************************\
@ -1651,83 +1815,29 @@ static const struct sdhci_ops sdhci_pci_ops = {
static int sdhci_pci_suspend(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct sdhci_pci_chip *chip;
struct sdhci_pci_slot *slot;
mmc_pm_flag_t slot_pm_flags;
mmc_pm_flag_t pm_flags = 0;
int i, ret;
struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
chip = pci_get_drvdata(pdev);
if (!chip)
return 0;
for (i = 0; i < chip->num_slots; i++) {
slot = chip->slots[i];
if (!slot)
continue;
if (chip->fixes && chip->fixes->suspend)
return chip->fixes->suspend(chip);
ret = sdhci_suspend_host(slot->host);
if (ret)
goto err_pci_suspend;
slot_pm_flags = slot->host->mmc->pm_flags;
if (slot_pm_flags & MMC_PM_WAKE_SDIO_IRQ)
sdhci_enable_irq_wakeups(slot->host);
pm_flags |= slot_pm_flags;
}
if (chip->fixes && chip->fixes->suspend) {
ret = chip->fixes->suspend(chip);
if (ret)
goto err_pci_suspend;
}
if (pm_flags & MMC_PM_KEEP_POWER) {
if (pm_flags & MMC_PM_WAKE_SDIO_IRQ)
device_init_wakeup(dev, true);
else
device_init_wakeup(dev, false);
} else
device_init_wakeup(dev, false);
return 0;
err_pci_suspend:
while (--i >= 0)
sdhci_resume_host(chip->slots[i]->host);
return ret;
return sdhci_pci_suspend_host(chip);
}
static int sdhci_pci_resume(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct sdhci_pci_chip *chip;
struct sdhci_pci_slot *slot;
int i, ret;
struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
chip = pci_get_drvdata(pdev);
if (!chip)
return 0;
if (chip->fixes && chip->fixes->resume) {
ret = chip->fixes->resume(chip);
if (ret)
return ret;
}
if (chip->fixes && chip->fixes->resume)
return chip->fixes->resume(chip);
for (i = 0; i < chip->num_slots; i++) {
slot = chip->slots[i];
if (!slot)
continue;
ret = sdhci_resume_host(slot->host);
if (ret)
return ret;
}
return 0;
return sdhci_pci_resume_host(chip);
}
#endif
@ -1735,67 +1845,29 @@ static int sdhci_pci_resume(struct device *dev)
static int sdhci_pci_runtime_suspend(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct sdhci_pci_chip *chip;
struct sdhci_pci_slot *slot;
int i, ret;
struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
chip = pci_get_drvdata(pdev);
if (!chip)
return 0;
for (i = 0; i < chip->num_slots; i++) {
slot = chip->slots[i];
if (!slot)
continue;
if (chip->fixes && chip->fixes->runtime_suspend)
return chip->fixes->runtime_suspend(chip);
ret = sdhci_runtime_suspend_host(slot->host);
if (ret)
goto err_pci_runtime_suspend;
}
if (chip->fixes && chip->fixes->suspend) {
ret = chip->fixes->suspend(chip);
if (ret)
goto err_pci_runtime_suspend;
}
return 0;
err_pci_runtime_suspend:
while (--i >= 0)
sdhci_runtime_resume_host(chip->slots[i]->host);
return ret;
return sdhci_pci_runtime_suspend_host(chip);
}
static int sdhci_pci_runtime_resume(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct sdhci_pci_chip *chip;
struct sdhci_pci_slot *slot;
int i, ret;
struct sdhci_pci_chip *chip = pci_get_drvdata(pdev);
chip = pci_get_drvdata(pdev);
if (!chip)
return 0;
if (chip->fixes && chip->fixes->resume) {
ret = chip->fixes->resume(chip);
if (ret)
return ret;
}
if (chip->fixes && chip->fixes->runtime_resume)
return chip->fixes->runtime_resume(chip);
for (i = 0; i < chip->num_slots; i++) {
slot = chip->slots[i];
if (!slot)
continue;
ret = sdhci_runtime_resume_host(slot->host);
if (ret)
return ret;
}
return 0;
return sdhci_pci_runtime_resume_host(chip);
}
#endif
@ -1818,6 +1890,7 @@ static struct sdhci_pci_slot *sdhci_pci_probe_slot(
struct sdhci_pci_slot *slot;
struct sdhci_host *host;
int ret, bar = first_bar + slotno;
size_t priv_size = chip->fixes ? chip->fixes->priv_size : 0;
if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
@ -1839,7 +1912,7 @@ static struct sdhci_pci_slot *sdhci_pci_probe_slot(
return ERR_PTR(-ENODEV);
}
host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pci_slot));
host = sdhci_alloc_host(&pdev->dev, sizeof(*slot) + priv_size);
if (IS_ERR(host)) {
dev_err(&pdev->dev, "cannot allocate host\n");
return ERR_CAST(host);
@ -1919,7 +1992,10 @@ static struct sdhci_pci_slot *sdhci_pci_probe_slot(
}
}
ret = sdhci_add_host(host);
if (chip->fixes && chip->fixes->add_host)
ret = chip->fixes->add_host(slot);
else
ret = sdhci_add_host(host);
if (ret)
goto remove;
@ -2042,6 +2118,8 @@ static int sdhci_pci_probe(struct pci_dev *pdev,
chip->allow_runtime_pm = chip->fixes->allow_runtime_pm;
}
chip->num_slots = slots;
chip->pm_retune = true;
chip->rpm_retune = true;
pci_set_drvdata(pdev, chip);

3
drivers/mmc/host/sdhci-pci-data.c
View file

@ -3,6 +3,3 @@
struct sdhci_pci_data *(*sdhci_pci_get_data)(struct pci_dev *pdev, int slotno);
EXPORT_SYMBOL_GPL(sdhci_pci_get_data);
int sdhci_pci_spt_drive_strength;
EXPORT_SYMBOL_GPL(sdhci_pci_spt_drive_strength);

4
drivers/mmc/host/sdhci-pci-o2micro.c
View file

@ -384,8 +384,10 @@ int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
return 0;
}
#ifdef CONFIG_PM_SLEEP
int sdhci_pci_o2_resume(struct sdhci_pci_chip *chip)
{
sdhci_pci_o2_probe(chip);
return 0;
return sdhci_pci_resume_host(chip);
}
#endif

24
drivers/mmc/host/sdhci-pci.h
View file

@ -64,12 +64,20 @@ struct sdhci_pci_fixes {
int (*probe) (struct sdhci_pci_chip *);
int (*probe_slot) (struct sdhci_pci_slot *);
int (*add_host) (struct sdhci_pci_slot *);
void (*remove_slot) (struct sdhci_pci_slot *, int);
#ifdef CONFIG_PM_SLEEP
int (*suspend) (struct sdhci_pci_chip *);
int (*resume) (struct sdhci_pci_chip *);
#endif
#ifdef CONFIG_PM
int (*runtime_suspend) (struct sdhci_pci_chip *);
int (*runtime_resume) (struct sdhci_pci_chip *);
#endif
const struct sdhci_ops *ops;
size_t priv_size;
};
struct sdhci_pci_slot {
@ -85,10 +93,7 @@ struct sdhci_pci_slot {
bool cd_override_level;
void (*hw_reset)(struct sdhci_host *host);
int (*select_drive_strength)(struct sdhci_host *host,
struct mmc_card *card,
unsigned int max_dtr, int host_drv,
int card_drv, int *drv_type);
unsigned long private[0] ____cacheline_aligned;
};
struct sdhci_pci_chip {
@ -97,10 +102,21 @@ struct sdhci_pci_chip {
unsigned int quirks;
unsigned int quirks2;
bool allow_runtime_pm;
bool pm_retune;
bool rpm_retune;
const struct sdhci_pci_fixes *fixes;
int num_slots; /* Slots on controller */
struct sdhci_pci_slot *slots[MAX_SLOTS]; /* Pointers to host slots */
};
static inline void *sdhci_pci_priv(struct sdhci_pci_slot *slot)
{
return (void *)slot->private;
}
#ifdef CONFIG_PM_SLEEP
int sdhci_pci_resume_host(struct sdhci_pci_chip *chip);
#endif
#endif /* __SDHCI_PCI_H */

3
drivers/mmc/host/sdhci-pltfm.c
View file

@ -213,6 +213,9 @@ static int sdhci_pltfm_suspend(struct device *dev)
{
struct sdhci_host *host = dev_get_drvdata(dev);
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
return sdhci_suspend_host(host);
}

9
drivers/mmc/host/sdhci-pxav2.c
View file

@ -185,7 +185,11 @@ static int sdhci_pxav2_probe(struct platform_device *pdev)
goto err_clk_get;
}
pltfm_host->clk = clk;
clk_prepare_enable(clk);
ret = clk_prepare_enable(clk);
if (ret) {
dev_err(&pdev->dev, "failed to enable io clock\n");
goto err_clk_enable;
}
host->quirks = SDHCI_QUIRK_BROKEN_ADMA
| SDHCI_QUIRK_BROKEN_TIMEOUT_VAL
@ -222,12 +226,11 @@ static int sdhci_pxav2_probe(struct platform_device *pdev)
goto err_add_host;
}
platform_set_drvdata(pdev, host);
return 0;
err_add_host:
clk_disable_unprepare(clk);
err_clk_enable:
clk_put(clk);
err_clk_get:
sdhci_pltfm_free(pdev);

12
drivers/mmc/host/sdhci-pxav3.c
View file

@ -323,11 +323,8 @@ static void pxav3_set_power(struct sdhci_host *host, unsigned char mode,
if (host->pwr == 0)
vdd = 0;
if (!IS_ERR(mmc->supply.vmmc)) {
spin_unlock_irq(&host->lock);
if (!IS_ERR(mmc->supply.vmmc))
mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);
spin_lock_irq(&host->lock);
}
}
static const struct sdhci_ops pxav3_sdhci_ops = {
@ -480,8 +477,6 @@ static int sdhci_pxav3_probe(struct platform_device *pdev)
goto err_add_host;
}
platform_set_drvdata(pdev, host);
if (host->mmc->pm_caps & MMC_PM_WAKE_SDIO_IRQ)
device_init_wakeup(&pdev->dev, 1);
@ -529,6 +524,8 @@ static int sdhci_pxav3_suspend(struct device *dev)
struct sdhci_host *host = dev_get_drvdata(dev);
pm_runtime_get_sync(dev);
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
ret = sdhci_suspend_host(host);
pm_runtime_mark_last_busy(dev);
pm_runtime_put_autosuspend(dev);
@ -562,6 +559,9 @@ static int sdhci_pxav3_runtime_suspend(struct device *dev)
if (ret)
return ret;
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
clk_disable_unprepare(pxa->clk_io);
if (!IS_ERR(pxa->clk_core))
clk_disable_unprepare(pxa->clk_core);

10
drivers/mmc/host/sdhci-s3c.c
View file

@ -190,9 +190,7 @@ static unsigned int sdhci_s3c_consider_clock(struct sdhci_s3c *ourhost,
* speed possible with selected clock source and skip the division.
*/
if (ourhost->no_divider) {
spin_unlock_irq(&ourhost->host->lock);
rate = clk_round_rate(clksrc, wanted);
spin_lock_irq(&ourhost->host->lock);
return wanted - rate;
}
@ -389,9 +387,7 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock)
clk &= ~SDHCI_CLOCK_CARD_EN;
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
spin_unlock_irq(&host->lock);
ret = clk_set_rate(ourhost->clk_bus[ourhost->cur_clk], clock);
spin_lock_irq(&host->lock);
if (ret != 0) {
dev_err(dev, "%s: failed to set clock rate %uHz\n",
mmc_hostname(host->mmc), clock);
@ -743,6 +739,9 @@ static int sdhci_s3c_suspend(struct device *dev)
{
struct sdhci_host *host = dev_get_drvdata(dev);
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
return sdhci_suspend_host(host);
}
@ -764,6 +763,9 @@ static int sdhci_s3c_runtime_suspend(struct device *dev)
ret = sdhci_runtime_suspend_host(host);
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
if (ourhost->cur_clk >= 0)
clk_disable_unprepare(ourhost->clk_bus[ourhost->cur_clk]);
clk_disable_unprepare(busclk);

3
drivers/mmc/host/sdhci-sirf.c
View file

@ -237,6 +237,9 @@ static int sdhci_sirf_suspend(struct device *dev)
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
int ret;
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
ret = sdhci_suspend_host(host);
if (ret)
return ret;

3
drivers/mmc/host/sdhci-spear.c
View file

@ -165,6 +165,9 @@ static int sdhci_suspend(struct device *dev)
struct spear_sdhci *sdhci = sdhci_priv(host);
int ret;
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
ret = sdhci_suspend_host(host);
if (!ret)
clk_disable(sdhci->clk);

8
drivers/mmc/host/sdhci-st.c
View file

@ -418,8 +418,6 @@ static int sdhci_st_probe(struct platform_device *pdev)
goto err_out;
}
platform_set_drvdata(pdev, host);
host_version = readw_relaxed((host->ioaddr + SDHCI_HOST_VERSION));
dev_info(&pdev->dev, "SDHCI ST Initialised: Host Version: 0x%x Vendor Version 0x%x\n",
@ -465,8 +463,12 @@ static int sdhci_st_suspend(struct device *dev)
struct sdhci_host *host = dev_get_drvdata(dev);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct st_mmc_platform_data *pdata = sdhci_pltfm_priv(pltfm_host);
int ret = sdhci_suspend_host(host);
int ret;
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
ret = sdhci_suspend_host(host);
if (ret)
goto out;

59
drivers/mmc/host/sdhci-tegra.c
View file

@ -21,6 +21,7 @@
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/reset.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
@ -65,6 +66,8 @@ struct sdhci_tegra {
struct gpio_desc *power_gpio;
bool ddr_signaling;
bool pad_calib_required;
struct reset_control *rst;
};
static u16 tegra_sdhci_readw(struct sdhci_host *host, int reg)
@ -431,7 +434,23 @@ static const struct sdhci_tegra_soc_data soc_data_tegra210 = {
.pdata = &sdhci_tegra210_pdata,
};
static const struct sdhci_pltfm_data sdhci_tegra186_pdata = {
.quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
SDHCI_QUIRK_SINGLE_POWER_WRITE |
SDHCI_QUIRK_NO_HISPD_BIT |
SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC |
SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
.ops = &tegra114_sdhci_ops,
};
static const struct sdhci_tegra_soc_data soc_data_tegra186 = {
.pdata = &sdhci_tegra186_pdata,
};
static const struct of_device_id sdhci_tegra_dt_match[] = {
{ .compatible = "nvidia,tegra186-sdhci", .data = &soc_data_tegra186 },
{ .compatible = "nvidia,tegra210-sdhci", .data = &soc_data_tegra210 },
{ .compatible = "nvidia,tegra124-sdhci", .data = &soc_data_tegra124 },
{ .compatible = "nvidia,tegra114-sdhci", .data = &soc_data_tegra114 },
@ -489,6 +508,25 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
clk_prepare_enable(clk);
pltfm_host->clk = clk;
tegra_host->rst = devm_reset_control_get(&pdev->dev, "sdhci");
if (IS_ERR(tegra_host->rst)) {
rc = PTR_ERR(tegra_host->rst);
dev_err(&pdev->dev, "failed to get reset control: %d\n", rc);
goto err_rst_get;
}
rc = reset_control_assert(tegra_host->rst);
if (rc)
goto err_rst_get;
usleep_range(2000, 4000);
rc = reset_control_deassert(tegra_host->rst);
if (rc)
goto err_rst_get;
usleep_range(2000, 4000);
rc = sdhci_add_host(host);
if (rc)
goto err_add_host;
@ -496,6 +534,8 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
return 0;
err_add_host:
reset_control_assert(tegra_host->rst);
err_rst_get:
clk_disable_unprepare(pltfm_host->clk);
err_clk_get:
err_power_req:
@ -504,6 +544,23 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
return rc;
}
static int sdhci_tegra_remove(struct platform_device *pdev)
{
struct sdhci_host *host = platform_get_drvdata(pdev);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_tegra *tegra_host = sdhci_pltfm_priv(pltfm_host);
sdhci_remove_host(host, 0);
reset_control_assert(tegra_host->rst);
usleep_range(2000, 4000);
clk_disable_unprepare(pltfm_host->clk);
sdhci_pltfm_free(pdev);
return 0;
}
static struct platform_driver sdhci_tegra_driver = {
.driver = {
.name = "sdhci-tegra",
@ -511,7 +568,7 @@ static struct platform_driver sdhci_tegra_driver = {
.pm = &sdhci_pltfm_pmops,
},
.probe = sdhci_tegra_probe,
.remove = sdhci_pltfm_unregister,
.remove = sdhci_tegra_remove,
};
module_platform_driver(sdhci_tegra_driver);

837
drivers/mmc/host/sdhci-xenon-phy.c Normal file
View file

@ -0,0 +1,837 @@
/*
* PHY support for Xenon SDHC
*
* Copyright (C) 2016 Marvell, All Rights Reserved.
*
* Author: Hu Ziji <huziji@marvell.com>
* Date: 2016-8-24
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2.
*/
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/ktime.h>
#include <linux/of_address.h>
#include "sdhci-pltfm.h"
#include "sdhci-xenon.h"
/* Register base for eMMC PHY 5.0 Version */
#define XENON_EMMC_5_0_PHY_REG_BASE 0x0160
/* Register base for eMMC PHY 5.1 Version */
#define XENON_EMMC_PHY_REG_BASE 0x0170
#define XENON_EMMC_PHY_TIMING_ADJUST XENON_EMMC_PHY_REG_BASE
#define XENON_EMMC_5_0_PHY_TIMING_ADJUST XENON_EMMC_5_0_PHY_REG_BASE
#define XENON_TIMING_ADJUST_SLOW_MODE BIT(29)
#define XENON_TIMING_ADJUST_SDIO_MODE BIT(28)
#define XENON_SAMPL_INV_QSP_PHASE_SELECT BIT(18)
#define XENON_SAMPL_INV_QSP_PHASE_SELECT_SHIFT 18
#define XENON_PHY_INITIALIZAION BIT(31)
#define XENON_WAIT_CYCLE_BEFORE_USING_MASK 0xF
#define XENON_WAIT_CYCLE_BEFORE_USING_SHIFT 12
#define XENON_FC_SYNC_EN_DURATION_MASK 0xF
#define XENON_FC_SYNC_EN_DURATION_SHIFT 8
#define XENON_FC_SYNC_RST_EN_DURATION_MASK 0xF
#define XENON_FC_SYNC_RST_EN_DURATION_SHIFT 4
#define XENON_FC_SYNC_RST_DURATION_MASK 0xF
#define XENON_FC_SYNC_RST_DURATION_SHIFT 0
#define XENON_EMMC_PHY_FUNC_CONTROL (XENON_EMMC_PHY_REG_BASE + 0x4)
#define XENON_EMMC_5_0_PHY_FUNC_CONTROL \
(XENON_EMMC_5_0_PHY_REG_BASE + 0x4)
#define XENON_ASYNC_DDRMODE_MASK BIT(23)
#define XENON_ASYNC_DDRMODE_SHIFT 23
#define XENON_CMD_DDR_MODE BIT(16)
#define XENON_DQ_DDR_MODE_SHIFT 8
#define XENON_DQ_DDR_MODE_MASK 0xFF
#define XENON_DQ_ASYNC_MODE BIT(4)
#define XENON_EMMC_PHY_PAD_CONTROL (XENON_EMMC_PHY_REG_BASE + 0x8)
#define XENON_EMMC_5_0_PHY_PAD_CONTROL \
(XENON_EMMC_5_0_PHY_REG_BASE + 0x8)
#define XENON_REC_EN_SHIFT 24
#define XENON_REC_EN_MASK 0xF
#define XENON_FC_DQ_RECEN BIT(24)
#define XENON_FC_CMD_RECEN BIT(25)
#define XENON_FC_QSP_RECEN BIT(26)
#define XENON_FC_QSN_RECEN BIT(27)
#define XENON_OEN_QSN BIT(28)
#define XENON_AUTO_RECEN_CTRL BIT(30)
#define XENON_FC_ALL_CMOS_RECEIVER 0xF000
#define XENON_EMMC5_FC_QSP_PD BIT(18)
#define XENON_EMMC5_FC_QSP_PU BIT(22)
#define XENON_EMMC5_FC_CMD_PD BIT(17)
#define XENON_EMMC5_FC_CMD_PU BIT(21)
#define XENON_EMMC5_FC_DQ_PD BIT(16)
#define XENON_EMMC5_FC_DQ_PU BIT(20)
#define XENON_EMMC_PHY_PAD_CONTROL1 (XENON_EMMC_PHY_REG_BASE + 0xC)
#define XENON_EMMC5_1_FC_QSP_PD BIT(9)
#define XENON_EMMC5_1_FC_QSP_PU BIT(25)
#define XENON_EMMC5_1_FC_CMD_PD BIT(8)
#define XENON_EMMC5_1_FC_CMD_PU BIT(24)
#define XENON_EMMC5_1_FC_DQ_PD 0xFF
#define XENON_EMMC5_1_FC_DQ_PU (0xFF << 16)
#define XENON_EMMC_PHY_PAD_CONTROL2 (XENON_EMMC_PHY_REG_BASE + 0x10)
#define XENON_EMMC_5_0_PHY_PAD_CONTROL2 \
(XENON_EMMC_5_0_PHY_REG_BASE + 0xC)
#define XENON_ZNR_MASK 0x1F
#define XENON_ZNR_SHIFT 8
#define XENON_ZPR_MASK 0x1F
/* Preferred ZNR and ZPR value vary between different boards.
* The specific ZNR and ZPR value should be defined here
* according to board actual timing.
*/
#define XENON_ZNR_DEF_VALUE 0xF
#define XENON_ZPR_DEF_VALUE 0xF
#define XENON_EMMC_PHY_DLL_CONTROL (XENON_EMMC_PHY_REG_BASE + 0x14)
#define XENON_EMMC_5_0_PHY_DLL_CONTROL \
(XENON_EMMC_5_0_PHY_REG_BASE + 0x10)
#define XENON_DLL_ENABLE BIT(31)
#define XENON_DLL_UPDATE_STROBE_5_0 BIT(30)
#define XENON_DLL_REFCLK_SEL BIT(30)
#define XENON_DLL_UPDATE BIT(23)
#define XENON_DLL_PHSEL1_SHIFT 24
#define XENON_DLL_PHSEL0_SHIFT 16
#define XENON_DLL_PHASE_MASK 0x3F
#define XENON_DLL_PHASE_90_DEGREE 0x1F
#define XENON_DLL_FAST_LOCK BIT(5)
#define XENON_DLL_GAIN2X BIT(3)
#define XENON_DLL_BYPASS_EN BIT(0)
#define XENON_EMMC_5_0_PHY_LOGIC_TIMING_ADJUST \
(XENON_EMMC_5_0_PHY_REG_BASE + 0x14)
#define XENON_EMMC_5_0_PHY_LOGIC_TIMING_VALUE 0x5A54
#define XENON_EMMC_PHY_LOGIC_TIMING_ADJUST (XENON_EMMC_PHY_REG_BASE + 0x18)
#define XENON_LOGIC_TIMING_VALUE 0x00AA8977
/*
* List offset of PHY registers and some special register values
* in eMMC PHY 5.0 or eMMC PHY 5.1
*/
struct xenon_emmc_phy_regs {
/* Offset of Timing Adjust register */
u16 timing_adj;
/* Offset of Func Control register */
u16 func_ctrl;
/* Offset of Pad Control register */
u16 pad_ctrl;
/* Offset of Pad Control register 2 */
u16 pad_ctrl2;
/* Offset of DLL Control register */
u16 dll_ctrl;
/* Offset of Logic Timing Adjust register */
u16 logic_timing_adj;
/* DLL Update Enable bit */
u32 dll_update;
/* value in Logic Timing Adjustment register */
u32 logic_timing_val;
};
static const char * const phy_types[] = {
"emmc 5.0 phy",
"emmc 5.1 phy"
};
enum xenon_phy_type_enum {
EMMC_5_0_PHY,
EMMC_5_1_PHY,
NR_PHY_TYPES
};
enum soc_pad_ctrl_type {
SOC_PAD_SD,
SOC_PAD_FIXED_1_8V,
};
struct soc_pad_ctrl {
/* Register address of SoC PHY PAD ctrl */
void __iomem *reg;
/* SoC PHY PAD ctrl type */
enum soc_pad_ctrl_type pad_type;
/* SoC specific operation to set SoC PHY PAD */
void (*set_soc_pad)(struct sdhci_host *host,
unsigned char signal_voltage);
};
static struct xenon_emmc_phy_regs xenon_emmc_5_0_phy_regs = {
.timing_adj = XENON_EMMC_5_0_PHY_TIMING_ADJUST,
.func_ctrl = XENON_EMMC_5_0_PHY_FUNC_CONTROL,
.pad_ctrl = XENON_EMMC_5_0_PHY_PAD_CONTROL,
.pad_ctrl2 = XENON_EMMC_5_0_PHY_PAD_CONTROL2,
.dll_ctrl = XENON_EMMC_5_0_PHY_DLL_CONTROL,
.logic_timing_adj = XENON_EMMC_5_0_PHY_LOGIC_TIMING_ADJUST,
.dll_update = XENON_DLL_UPDATE_STROBE_5_0,
.logic_timing_val = XENON_EMMC_5_0_PHY_LOGIC_TIMING_VALUE,
};
static struct xenon_emmc_phy_regs xenon_emmc_5_1_phy_regs = {
.timing_adj = XENON_EMMC_PHY_TIMING_ADJUST,
.func_ctrl = XENON_EMMC_PHY_FUNC_CONTROL,
.pad_ctrl = XENON_EMMC_PHY_PAD_CONTROL,
.pad_ctrl2 = XENON_EMMC_PHY_PAD_CONTROL2,
.dll_ctrl = XENON_EMMC_PHY_DLL_CONTROL,
.logic_timing_adj = XENON_EMMC_PHY_LOGIC_TIMING_ADJUST,
.dll_update = XENON_DLL_UPDATE,
.logic_timing_val = XENON_LOGIC_TIMING_VALUE,
};
/*
* eMMC PHY configuration and operations
*/
struct xenon_emmc_phy_params {
bool slow_mode;
u8 znr;
u8 zpr;
/* Nr of consecutive Sampling Points of a Valid Sampling Window */
u8 nr_tun_times;
/* Divider for calculating Tuning Step */
u8 tun_step_divider;
struct soc_pad_ctrl pad_ctrl;
};
static int xenon_alloc_emmc_phy(struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
struct xenon_emmc_phy_params *params;
params = devm_kzalloc(mmc_dev(host->mmc), sizeof(*params), GFP_KERNEL);
if (!params)
return -ENOMEM;
priv->phy_params = params;
if (priv->phy_type == EMMC_5_0_PHY)
priv->emmc_phy_regs = &xenon_emmc_5_0_phy_regs;
else
priv->emmc_phy_regs = &xenon_emmc_5_1_phy_regs;
return 0;
}
/*
* eMMC 5.0/5.1 PHY init/re-init.
* eMMC PHY init should be executed after:
* 1. SDCLK frequency changes.
* 2. SDCLK is stopped and re-enabled.
* 3. config in emmc_phy_regs->timing_adj and emmc_phy_regs->func_ctrl
* are changed
*/
static int xenon_emmc_phy_init(struct sdhci_host *host)
{
u32 reg;
u32 wait, clock;
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
struct xenon_emmc_phy_regs *phy_regs = priv->emmc_phy_regs;
reg = sdhci_readl(host, phy_regs->timing_adj);
reg |= XENON_PHY_INITIALIZAION;
sdhci_writel(host, reg, phy_regs->timing_adj);
/* Add duration of FC_SYNC_RST */
wait = ((reg >> XENON_FC_SYNC_RST_DURATION_SHIFT) &
XENON_FC_SYNC_RST_DURATION_MASK);
/* Add interval between FC_SYNC_EN and FC_SYNC_RST */
wait += ((reg >> XENON_FC_SYNC_RST_EN_DURATION_SHIFT) &
XENON_FC_SYNC_RST_EN_DURATION_MASK);
/* Add duration of asserting FC_SYNC_EN */
wait += ((reg >> XENON_FC_SYNC_EN_DURATION_SHIFT) &
XENON_FC_SYNC_EN_DURATION_MASK);
/* Add duration of waiting for PHY */
wait += ((reg >> XENON_WAIT_CYCLE_BEFORE_USING_SHIFT) &
XENON_WAIT_CYCLE_BEFORE_USING_MASK);
/* 4 additional bus clock and 4 AXI bus clock are required */
wait += 8;
wait <<= 20;
clock = host->clock;
if (!clock)
/* Use the possibly slowest bus frequency value */
clock = XENON_LOWEST_SDCLK_FREQ;
/* get the wait time */
wait /= clock;
wait++;
/* wait for host eMMC PHY init completes */
udelay(wait);
reg = sdhci_readl(host, phy_regs->timing_adj);
reg &= XENON_PHY_INITIALIZAION;
if (reg) {
dev_err(mmc_dev(host->mmc), "eMMC PHY init cannot complete after %d us\n",
wait);
return -ETIMEDOUT;
}
return 0;
}
#define ARMADA_3700_SOC_PAD_1_8V 0x1
#define ARMADA_3700_SOC_PAD_3_3V 0x0
static void armada_3700_soc_pad_voltage_set(struct sdhci_host *host,
unsigned char signal_voltage)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
struct xenon_emmc_phy_params *params = priv->phy_params;
if (params->pad_ctrl.pad_type == SOC_PAD_FIXED_1_8V) {
writel(ARMADA_3700_SOC_PAD_1_8V, params->pad_ctrl.reg);
} else if (params->pad_ctrl.pad_type == SOC_PAD_SD) {
if (signal_voltage == MMC_SIGNAL_VOLTAGE_180)
writel(ARMADA_3700_SOC_PAD_1_8V, params->pad_ctrl.reg);
else if (signal_voltage == MMC_SIGNAL_VOLTAGE_330)
writel(ARMADA_3700_SOC_PAD_3_3V, params->pad_ctrl.reg);
}
}
/*
* Set SoC PHY voltage PAD control register,
* according to the operation voltage on PAD.
* The detailed operation depends on SoC implementation.
*/
static void xenon_emmc_phy_set_soc_pad(struct sdhci_host *host,
unsigned char signal_voltage)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
struct xenon_emmc_phy_params *params = priv->phy_params;
if (!params->pad_ctrl.reg)
return;
if (params->pad_ctrl.set_soc_pad)
params->pad_ctrl.set_soc_pad(host, signal_voltage);
}
/*
* Enable eMMC PHY HW DLL
* DLL should be enabled and stable before HS200/SDR104 tuning,
* and before HS400 data strobe setting.
*/
static int xenon_emmc_phy_enable_dll(struct sdhci_host *host)
{
u32 reg;
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
struct xenon_emmc_phy_regs *phy_regs = priv->emmc_phy_regs;
ktime_t timeout;
if (WARN_ON(host->clock <= MMC_HIGH_52_MAX_DTR))
return -EINVAL;
reg = sdhci_readl(host, phy_regs->dll_ctrl);
if (reg & XENON_DLL_ENABLE)
return 0;
/* Enable DLL */
reg = sdhci_readl(host, phy_regs->dll_ctrl);
reg |= (XENON_DLL_ENABLE | XENON_DLL_FAST_LOCK);
/*
* Set Phase as 90 degree, which is most common value.
* Might set another value if necessary.
* The granularity is 1 degree.
*/
reg &= ~((XENON_DLL_PHASE_MASK << XENON_DLL_PHSEL0_SHIFT) |
(XENON_DLL_PHASE_MASK << XENON_DLL_PHSEL1_SHIFT));
reg |= ((XENON_DLL_PHASE_90_DEGREE << XENON_DLL_PHSEL0_SHIFT) |
(XENON_DLL_PHASE_90_DEGREE << XENON_DLL_PHSEL1_SHIFT));
reg &= ~XENON_DLL_BYPASS_EN;
reg |= phy_regs->dll_update;
if (priv->phy_type == EMMC_5_1_PHY)
reg &= ~XENON_DLL_REFCLK_SEL;
sdhci_writel(host, reg, phy_regs->dll_ctrl);
/* Wait max 32 ms */
timeout = ktime_add_ms(ktime_get(), 32);
while (!(sdhci_readw(host, XENON_SLOT_EXT_PRESENT_STATE) &
XENON_DLL_LOCK_STATE)) {
if (ktime_after(ktime_get(), timeout)) {
dev_err(mmc_dev(host->mmc), "Wait for DLL Lock time-out\n");
return -ETIMEDOUT;
}
udelay(100);
}
return 0;
}
/*
* Config to eMMC PHY to prepare for tuning.
* Enable HW DLL and set the TUNING_STEP
*/
static int xenon_emmc_phy_config_tuning(struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
struct xenon_emmc_phy_params *params = priv->phy_params;
u32 reg, tuning_step;
int ret;
if (host->clock <= MMC_HIGH_52_MAX_DTR)
return -EINVAL;
ret = xenon_emmc_phy_enable_dll(host);
if (ret)
return ret;
/* Achieve TUNING_STEP with HW DLL help */
reg = sdhci_readl(host, XENON_SLOT_DLL_CUR_DLY_VAL);
tuning_step = reg / params->tun_step_divider;
if (unlikely(tuning_step > XENON_TUNING_STEP_MASK)) {
dev_warn(mmc_dev(host->mmc),
"HS200 TUNING_STEP %d is larger than MAX value\n",
tuning_step);
tuning_step = XENON_TUNING_STEP_MASK;
}
/* Set TUNING_STEP for later tuning */
reg = sdhci_readl(host, XENON_SLOT_OP_STATUS_CTRL);
reg &= ~(XENON_TUN_CONSECUTIVE_TIMES_MASK <<
XENON_TUN_CONSECUTIVE_TIMES_SHIFT);
reg |= (params->nr_tun_times << XENON_TUN_CONSECUTIVE_TIMES_SHIFT);
reg &= ~(XENON_TUNING_STEP_MASK << XENON_TUNING_STEP_SHIFT);
reg |= (tuning_step << XENON_TUNING_STEP_SHIFT);
sdhci_writel(host, reg, XENON_SLOT_OP_STATUS_CTRL);
return 0;
}
static void xenon_emmc_phy_disable_data_strobe(struct sdhci_host *host)
{
u32 reg;
/* Disable SDHC Data Strobe */
reg = sdhci_readl(host, XENON_SLOT_EMMC_CTRL);
reg &= ~XENON_ENABLE_DATA_STROBE;
sdhci_writel(host, reg, XENON_SLOT_EMMC_CTRL);
}
/* Set HS400 Data Strobe */
static void xenon_emmc_phy_strobe_delay_adj(struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
u32 reg;
if (WARN_ON(host->timing != MMC_TIMING_MMC_HS400))
return;
if (host->clock <= MMC_HIGH_52_MAX_DTR)
return;
dev_dbg(mmc_dev(host->mmc), "starts HS400 strobe delay adjustment\n");
xenon_emmc_phy_enable_dll(host);
/* Enable SDHC Data Strobe */
reg = sdhci_readl(host, XENON_SLOT_EMMC_CTRL);
reg |= XENON_ENABLE_DATA_STROBE;
sdhci_writel(host, reg, XENON_SLOT_EMMC_CTRL);
/* Set Data Strobe Pull down */
if (priv->phy_type == EMMC_5_0_PHY) {
reg = sdhci_readl(host, XENON_EMMC_5_0_PHY_PAD_CONTROL);
reg |= XENON_EMMC5_FC_QSP_PD;
reg &= ~XENON_EMMC5_FC_QSP_PU;
sdhci_writel(host, reg, XENON_EMMC_5_0_PHY_PAD_CONTROL);
} else {
reg = sdhci_readl(host, XENON_EMMC_PHY_PAD_CONTROL1);
reg |= XENON_EMMC5_1_FC_QSP_PD;
reg &= ~XENON_EMMC5_1_FC_QSP_PU;
sdhci_writel(host, reg, XENON_EMMC_PHY_PAD_CONTROL1);
}
}
/*
* If eMMC PHY Slow Mode is required in lower speed mode (SDCLK < 55MHz)
* in SDR mode, enable Slow Mode to bypass eMMC PHY.
* SDIO slower SDR mode also requires Slow Mode.
*
* If Slow Mode is enabled, return true.
* Otherwise, return false.
*/
static bool xenon_emmc_phy_slow_mode(struct sdhci_host *host,
unsigned char timing)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
struct xenon_emmc_phy_params *params = priv->phy_params;
struct xenon_emmc_phy_regs *phy_regs = priv->emmc_phy_regs;
u32 reg;
int ret;
if (host->clock > MMC_HIGH_52_MAX_DTR)
return false;
reg = sdhci_readl(host, phy_regs->timing_adj);
/* When in slower SDR mode, enable Slow Mode for SDIO
* or when Slow Mode flag is set
*/
switch (timing) {
case MMC_TIMING_LEGACY:
/*
* If Slow Mode is required, enable Slow Mode by default
* in early init phase to avoid any potential issue.
*/
if (params->slow_mode) {
reg |= XENON_TIMING_ADJUST_SLOW_MODE;
ret = true;
} else {
reg &= ~XENON_TIMING_ADJUST_SLOW_MODE;
ret = false;
}
break;
case MMC_TIMING_UHS_SDR25:
case MMC_TIMING_UHS_SDR12:
case MMC_TIMING_SD_HS:
case MMC_TIMING_MMC_HS:
if ((priv->init_card_type == MMC_TYPE_SDIO) ||
params->slow_mode) {
reg |= XENON_TIMING_ADJUST_SLOW_MODE;
ret = true;
break;
}
default:
reg &= ~XENON_TIMING_ADJUST_SLOW_MODE;
ret = false;
}
sdhci_writel(host, reg, phy_regs->timing_adj);
return ret;
}
/*
* Set-up eMMC 5.0/5.1 PHY.
* Specific configuration depends on the current speed mode in use.
*/
static void xenon_emmc_phy_set(struct sdhci_host *host,
unsigned char timing)
{
u32 reg;
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
struct xenon_emmc_phy_params *params = priv->phy_params;
struct xenon_emmc_phy_regs *phy_regs = priv->emmc_phy_regs;
dev_dbg(mmc_dev(host->mmc), "eMMC PHY setting starts\n");
/* Setup pad, set bit[28] and bits[26:24] */
reg = sdhci_readl(host, phy_regs->pad_ctrl);
reg |= (XENON_FC_DQ_RECEN | XENON_FC_CMD_RECEN |
XENON_FC_QSP_RECEN | XENON_OEN_QSN);
/* All FC_XX_RECEIVCE should be set as CMOS Type */
reg |= XENON_FC_ALL_CMOS_RECEIVER;
sdhci_writel(host, reg, phy_regs->pad_ctrl);
/* Set CMD and DQ Pull Up */
if (priv->phy_type == EMMC_5_0_PHY) {
reg = sdhci_readl(host, XENON_EMMC_5_0_PHY_PAD_CONTROL);
reg |= (XENON_EMMC5_FC_CMD_PU | XENON_EMMC5_FC_DQ_PU);
reg &= ~(XENON_EMMC5_FC_CMD_PD | XENON_EMMC5_FC_DQ_PD);
sdhci_writel(host, reg, XENON_EMMC_5_0_PHY_PAD_CONTROL);
} else {
reg = sdhci_readl(host, XENON_EMMC_PHY_PAD_CONTROL1);
reg |= (XENON_EMMC5_1_FC_CMD_PU | XENON_EMMC5_1_FC_DQ_PU);
reg &= ~(XENON_EMMC5_1_FC_CMD_PD | XENON_EMMC5_1_FC_DQ_PD);
sdhci_writel(host, reg, XENON_EMMC_PHY_PAD_CONTROL1);
}
if (timing == MMC_TIMING_LEGACY) {
xenon_emmc_phy_slow_mode(host, timing);
goto phy_init;
}
/*
* If SDIO card, set SDIO Mode
* Otherwise, clear SDIO Mode
*/
reg = sdhci_readl(host, phy_regs->timing_adj);
if (priv->init_card_type == MMC_TYPE_SDIO)
reg |= XENON_TIMING_ADJUST_SDIO_MODE;
else
reg &= ~XENON_TIMING_ADJUST_SDIO_MODE;
sdhci_writel(host, reg, phy_regs->timing_adj);
if (xenon_emmc_phy_slow_mode(host, timing))
goto phy_init;
/*
* Set preferred ZNR and ZPR value
* The ZNR and ZPR value vary between different boards.
* Define them both in sdhci-xenon-emmc-phy.h.
*/
reg = sdhci_readl(host, phy_regs->pad_ctrl2);
reg &= ~((XENON_ZNR_MASK << XENON_ZNR_SHIFT) | XENON_ZPR_MASK);
reg |= ((params->znr << XENON_ZNR_SHIFT) | params->zpr);
sdhci_writel(host, reg, phy_regs->pad_ctrl2);
/*
* When setting EMMC_PHY_FUNC_CONTROL register,
* SD clock should be disabled
*/
reg = sdhci_readl(host, SDHCI_CLOCK_CONTROL);
reg &= ~SDHCI_CLOCK_CARD_EN;
sdhci_writew(host, reg, SDHCI_CLOCK_CONTROL);
reg = sdhci_readl(host, phy_regs->func_ctrl);
switch (timing) {
case MMC_TIMING_MMC_HS400:
reg |= (XENON_DQ_DDR_MODE_MASK << XENON_DQ_DDR_MODE_SHIFT) |
XENON_CMD_DDR_MODE;
reg &= ~XENON_DQ_ASYNC_MODE;
break;
case MMC_TIMING_UHS_DDR50:
case MMC_TIMING_MMC_DDR52:
reg |= (XENON_DQ_DDR_MODE_MASK << XENON_DQ_DDR_MODE_SHIFT) |
XENON_CMD_DDR_MODE | XENON_DQ_ASYNC_MODE;
break;
default:
reg &= ~((XENON_DQ_DDR_MODE_MASK << XENON_DQ_DDR_MODE_SHIFT) |
XENON_CMD_DDR_MODE);
reg |= XENON_DQ_ASYNC_MODE;
}
sdhci_writel(host, reg, phy_regs->func_ctrl);
/* Enable bus clock */
reg = sdhci_readl(host, SDHCI_CLOCK_CONTROL);
reg |= SDHCI_CLOCK_CARD_EN;
sdhci_writew(host, reg, SDHCI_CLOCK_CONTROL);
if (timing == MMC_TIMING_MMC_HS400)
/* Hardware team recommend a value for HS400 */
sdhci_writel(host, phy_regs->logic_timing_val,
phy_regs->logic_timing_adj);
else
xenon_emmc_phy_disable_data_strobe(host);
phy_init:
xenon_emmc_phy_init(host);
dev_dbg(mmc_dev(host->mmc), "eMMC PHY setting completes\n");
}
static int get_dt_pad_ctrl_data(struct sdhci_host *host,
struct device_node *np,
struct xenon_emmc_phy_params *params)
{
int ret = 0;
const char *name;
struct resource iomem;
if (of_device_is_compatible(np, "marvell,armada-3700-sdhci"))
params->pad_ctrl.set_soc_pad = armada_3700_soc_pad_voltage_set;
else
return 0;
if (of_address_to_resource(np, 1, &iomem)) {
dev_err(mmc_dev(host->mmc), "Unable to find SoC PAD ctrl register address for %s\n",
np->name);
return -EINVAL;
}
params->pad_ctrl.reg = devm_ioremap_resource(mmc_dev(host->mmc),
&iomem);
if (IS_ERR(params->pad_ctrl.reg))
return PTR_ERR(params->pad_ctrl.reg);
ret = of_property_read_string(np, "marvell,pad-type", &name);
if (ret) {
dev_err(mmc_dev(host->mmc), "Unable to determine SoC PHY PAD ctrl type\n");
return ret;
}
if (!strcmp(name, "sd")) {
params->pad_ctrl.pad_type = SOC_PAD_SD;
} else if (!strcmp(name, "fixed-1-8v")) {
params->pad_ctrl.pad_type = SOC_PAD_FIXED_1_8V;
} else {
dev_err(mmc_dev(host->mmc), "Unsupported SoC PHY PAD ctrl type %s\n",
name);
return -EINVAL;
}
return ret;
}
static int xenon_emmc_phy_parse_param_dt(struct sdhci_host *host,
struct device_node *np,
struct xenon_emmc_phy_params *params)
{
u32 value;
params->slow_mode = false;
if (of_property_read_bool(np, "marvell,xenon-phy-slow-mode"))
params->slow_mode = true;
params->znr = XENON_ZNR_DEF_VALUE;
if (!of_property_read_u32(np, "marvell,xenon-phy-znr", &value))
params->znr = value & XENON_ZNR_MASK;
params->zpr = XENON_ZPR_DEF_VALUE;
if (!of_property_read_u32(np, "marvell,xenon-phy-zpr", &value))
params->zpr = value & XENON_ZPR_MASK;
params->nr_tun_times = XENON_TUN_CONSECUTIVE_TIMES;
if (!of_property_read_u32(np, "marvell,xenon-phy-nr-success-tun",
&value))
params->nr_tun_times = value & XENON_TUN_CONSECUTIVE_TIMES_MASK;
params->tun_step_divider = XENON_TUNING_STEP_DIVIDER;
if (!of_property_read_u32(np, "marvell,xenon-phy-tun-step-divider",
&value))
params->tun_step_divider = value & 0xFF;
return get_dt_pad_ctrl_data(host, np, params);
}
/* Set SoC PHY Voltage PAD */
void xenon_soc_pad_ctrl(struct sdhci_host *host,
unsigned char signal_voltage)
{
xenon_emmc_phy_set_soc_pad(host, signal_voltage);
}
/*
* Setting PHY when card is working in High Speed Mode.
* HS400 set data strobe line.
* HS200/SDR104 set tuning config to prepare for tuning.
*/
static int xenon_hs_delay_adj(struct sdhci_host *host)
{
int ret = 0;
if (WARN_ON(host->clock <= XENON_DEFAULT_SDCLK_FREQ))
return -EINVAL;
switch (host->timing) {
case MMC_TIMING_MMC_HS400:
xenon_emmc_phy_strobe_delay_adj(host);
return 0;
case MMC_TIMING_MMC_HS200:
case MMC_TIMING_UHS_SDR104:
return xenon_emmc_phy_config_tuning(host);
case MMC_TIMING_MMC_DDR52:
case MMC_TIMING_UHS_DDR50:
/*
* DDR Mode requires driver to scan Sampling Fixed Delay Line,
* to find out a perfect operation sampling point.
* It is hard to implement such a scan in host driver
* since initiating commands by host driver is not safe.
* Thus so far just keep PHY Sampling Fixed Delay in
* default value of DDR mode.
*
* If any timing issue occurs in DDR mode on Marvell products,
* please contact maintainer for internal support in Marvell.
*/
dev_warn_once(mmc_dev(host->mmc), "Timing issue might occur in DDR mode\n");
return 0;
}
return ret;
}
/*
* Adjust PHY setting.
* PHY setting should be adjusted when SDCLK frequency, Bus Width
* or Speed Mode is changed.
* Additional config are required when card is working in High Speed mode,
* after leaving Legacy Mode.
*/
int xenon_phy_adj(struct sdhci_host *host, struct mmc_ios *ios)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
int ret = 0;
if (!host->clock) {
priv->clock = 0;
return 0;
}
/*
* The timing, frequency or bus width is changed,
* better to set eMMC PHY based on current setting
* and adjust Xenon SDHC delay.
*/
if ((host->clock == priv->clock) &&
(ios->bus_width == priv->bus_width) &&
(ios->timing == priv->timing))
return 0;
xenon_emmc_phy_set(host, ios->timing);
/* Update the record */
priv->bus_width = ios->bus_width;
priv->timing = ios->timing;
priv->clock = host->clock;
/* Legacy mode is a special case */
if (ios->timing == MMC_TIMING_LEGACY)
return 0;
if (host->clock > XENON_DEFAULT_SDCLK_FREQ)
ret = xenon_hs_delay_adj(host);
return ret;
}
void xenon_clean_phy(struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
kfree(priv->phy_params);
}
static int xenon_add_phy(struct device_node *np, struct sdhci_host *host,
const char *phy_name)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
int i, ret;
for (i = 0; i < NR_PHY_TYPES; i++) {
if (!strcmp(phy_name, phy_types[i])) {
priv->phy_type = i;
break;
}
}
if (i == NR_PHY_TYPES) {
dev_err(mmc_dev(host->mmc),
"Unable to determine PHY name %s. Use default eMMC 5.1 PHY\n",
phy_name);
priv->phy_type = EMMC_5_1_PHY;
}
ret = xenon_alloc_emmc_phy(host);
if (ret)
return ret;
ret = xenon_emmc_phy_parse_param_dt(host, np, priv->phy_params);
if (ret)
xenon_clean_phy(host);
return ret;
}
int xenon_phy_parse_dt(struct device_node *np, struct sdhci_host *host)
{
const char *phy_type = NULL;
if (!of_property_read_string(np, "marvell,xenon-phy-type", &phy_type))
return xenon_add_phy(np, host, phy_type);
return xenon_add_phy(np, host, "emmc 5.1 phy");
}

548
drivers/mmc/host/sdhci-xenon.c Normal file
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/*
* Driver for Marvell Xenon SDHC as a platform device
*
* Copyright (C) 2016 Marvell, All Rights Reserved.
*
* Author: Hu Ziji <huziji@marvell.com>
* Date: 2016-8-24
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2.
*
* Inspired by Jisheng Zhang <jszhang@marvell.com>
* Special thanks to Video BG4 project team.
*/
#include <linux/delay.h>
#include <linux/ktime.h>
#include <linux/module.h>
#include <linux/of.h>
#include "sdhci-pltfm.h"
#include "sdhci-xenon.h"
static int xenon_enable_internal_clk(struct sdhci_host *host)
{
u32 reg;
ktime_t timeout;
reg = sdhci_readl(host, SDHCI_CLOCK_CONTROL);
reg |= SDHCI_CLOCK_INT_EN;
sdhci_writel(host, reg, SDHCI_CLOCK_CONTROL);
/* Wait max 20 ms */
timeout = ktime_add_ms(ktime_get(), 20);
while (!((reg = sdhci_readw(host, SDHCI_CLOCK_CONTROL))
& SDHCI_CLOCK_INT_STABLE)) {
if (ktime_after(ktime_get(), timeout)) {
dev_err(mmc_dev(host->mmc), "Internal clock never stabilised.\n");
return -ETIMEDOUT;
}
usleep_range(900, 1100);
}
return 0;
}
/* Set SDCLK-off-while-idle */
static void xenon_set_sdclk_off_idle(struct sdhci_host *host,
unsigned char sdhc_id, bool enable)
{
u32 reg;
u32 mask;
reg = sdhci_readl(host, XENON_SYS_OP_CTRL);
/* Get the bit shift basing on the SDHC index */
mask = (0x1 << (XENON_SDCLK_IDLEOFF_ENABLE_SHIFT + sdhc_id));
if (enable)
reg |= mask;
else
reg &= ~mask;
sdhci_writel(host, reg, XENON_SYS_OP_CTRL);
}
/* Enable/Disable the Auto Clock Gating function */
static void xenon_set_acg(struct sdhci_host *host, bool enable)
{
u32 reg;
reg = sdhci_readl(host, XENON_SYS_OP_CTRL);
if (enable)
reg &= ~XENON_AUTO_CLKGATE_DISABLE_MASK;
else
reg |= XENON_AUTO_CLKGATE_DISABLE_MASK;
sdhci_writel(host, reg, XENON_SYS_OP_CTRL);
}
/* Enable this SDHC */
static void xenon_enable_sdhc(struct sdhci_host *host,
unsigned char sdhc_id)
{
u32 reg;
reg = sdhci_readl(host, XENON_SYS_OP_CTRL);
reg |= (BIT(sdhc_id) << XENON_SLOT_ENABLE_SHIFT);
sdhci_writel(host, reg, XENON_SYS_OP_CTRL);
host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY;
/*
* Force to clear BUS_TEST to
* skip bus_test_pre and bus_test_post
*/
host->mmc->caps &= ~MMC_CAP_BUS_WIDTH_TEST;
}
/* Disable this SDHC */
static void xenon_disable_sdhc(struct sdhci_host *host,
unsigned char sdhc_id)
{
u32 reg;
reg = sdhci_readl(host, XENON_SYS_OP_CTRL);
reg &= ~(BIT(sdhc_id) << XENON_SLOT_ENABLE_SHIFT);
sdhci_writel(host, reg, XENON_SYS_OP_CTRL);
}
/* Enable Parallel Transfer Mode */
static void xenon_enable_sdhc_parallel_tran(struct sdhci_host *host,
unsigned char sdhc_id)
{
u32 reg;
reg = sdhci_readl(host, XENON_SYS_EXT_OP_CTRL);
reg |= BIT(sdhc_id);
sdhci_writel(host, reg, XENON_SYS_EXT_OP_CTRL);
}
/* Mask command conflict error */
static void xenon_mask_cmd_conflict_err(struct sdhci_host *host)
{
u32 reg;
reg = sdhci_readl(host, XENON_SYS_EXT_OP_CTRL);
reg |= XENON_MASK_CMD_CONFLICT_ERR;
sdhci_writel(host, reg, XENON_SYS_EXT_OP_CTRL);
}
static void xenon_retune_setup(struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
u32 reg;
/* Disable the Re-Tuning Request functionality */
reg = sdhci_readl(host, XENON_SLOT_RETUNING_REQ_CTRL);
reg &= ~XENON_RETUNING_COMPATIBLE;
sdhci_writel(host, reg, XENON_SLOT_RETUNING_REQ_CTRL);
/* Disable the Re-tuning Interrupt */
reg = sdhci_readl(host, SDHCI_SIGNAL_ENABLE);
reg &= ~SDHCI_INT_RETUNE;
sdhci_writel(host, reg, SDHCI_SIGNAL_ENABLE);
reg = sdhci_readl(host, SDHCI_INT_ENABLE);
reg &= ~SDHCI_INT_RETUNE;
sdhci_writel(host, reg, SDHCI_INT_ENABLE);
/* Force to use Tuning Mode 1 */
host->tuning_mode = SDHCI_TUNING_MODE_1;
/* Set re-tuning period */
host->tuning_count = 1 << (priv->tuning_count - 1);
}
/*
* Operations inside struct sdhci_ops
*/
/* Recover the Register Setting cleared during SOFTWARE_RESET_ALL */
static void xenon_reset_exit(struct sdhci_host *host,
unsigned char sdhc_id, u8 mask)
{
/* Only SOFTWARE RESET ALL will clear the register setting */
if (!(mask & SDHCI_RESET_ALL))
return;
/* Disable tuning request and auto-retuning again */
xenon_retune_setup(host);
xenon_set_acg(host, true);
xenon_set_sdclk_off_idle(host, sdhc_id, false);
xenon_mask_cmd_conflict_err(host);
}
static void xenon_reset(struct sdhci_host *host, u8 mask)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
sdhci_reset(host, mask);
xenon_reset_exit(host, priv->sdhc_id, mask);
}
/*
* Xenon defines different values for HS200 and HS400
* in Host_Control_2
*/
static void xenon_set_uhs_signaling(struct sdhci_host *host,
unsigned int timing)
{
u16 ctrl_2;
ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
/* Select Bus Speed Mode for host */
ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
if (timing == MMC_TIMING_MMC_HS200)
ctrl_2 |= XENON_CTRL_HS200;
else if (timing == MMC_TIMING_UHS_SDR104)
ctrl_2 |= SDHCI_CTRL_UHS_SDR104;
else if (timing == MMC_TIMING_UHS_SDR12)
ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
else if (timing == MMC_TIMING_UHS_SDR25)
ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
else if (timing == MMC_TIMING_UHS_SDR50)
ctrl_2 |= SDHCI_CTRL_UHS_SDR50;
else if ((timing == MMC_TIMING_UHS_DDR50) ||
(timing == MMC_TIMING_MMC_DDR52))
ctrl_2 |= SDHCI_CTRL_UHS_DDR50;
else if (timing == MMC_TIMING_MMC_HS400)
ctrl_2 |= XENON_CTRL_HS400;
sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
}
static const struct sdhci_ops sdhci_xenon_ops = {
.set_clock = sdhci_set_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = xenon_reset,
.set_uhs_signaling = xenon_set_uhs_signaling,
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
};
static const struct sdhci_pltfm_data sdhci_xenon_pdata = {
.ops = &sdhci_xenon_ops,
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
};
/*
* Xenon Specific Operations in mmc_host_ops
*/
static void xenon_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct sdhci_host *host = mmc_priv(mmc);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
u32 reg;
/*
* HS400/HS200/eMMC HS doesn't have Preset Value register.
* However, sdhci_set_ios will read HS400/HS200 Preset register.
* Disable Preset Value register for HS400/HS200.
* eMMC HS with preset_enabled set will trigger a bug in
* get_preset_value().
*/
if ((ios->timing == MMC_TIMING_MMC_HS400) ||
(ios->timing == MMC_TIMING_MMC_HS200) ||
(ios->timing == MMC_TIMING_MMC_HS)) {
host->preset_enabled = false;
host->quirks2 |= SDHCI_QUIRK2_PRESET_VALUE_BROKEN;
host->flags &= ~SDHCI_PV_ENABLED;
reg = sdhci_readw(host, SDHCI_HOST_CONTROL2);
reg &= ~SDHCI_CTRL_PRESET_VAL_ENABLE;
sdhci_writew(host, reg, SDHCI_HOST_CONTROL2);
} else {
host->quirks2 &= ~SDHCI_QUIRK2_PRESET_VALUE_BROKEN;
}
sdhci_set_ios(mmc, ios);
xenon_phy_adj(host, ios);
if (host->clock > XENON_DEFAULT_SDCLK_FREQ)
xenon_set_sdclk_off_idle(host, priv->sdhc_id, true);
}
static int xenon_start_signal_voltage_switch(struct mmc_host *mmc,
struct mmc_ios *ios)
{
struct sdhci_host *host = mmc_priv(mmc);
/*
* Before SD/SDIO set signal voltage, SD bus clock should be
* disabled. However, sdhci_set_clock will also disable the Internal
* clock in mmc_set_signal_voltage().
* If Internal clock is disabled, the 3.3V/1.8V bit can not be updated.
* Thus here manually enable internal clock.
*
* After switch completes, it is unnecessary to disable internal clock,
* since keeping internal clock active obeys SD spec.
*/
xenon_enable_internal_clk(host);
xenon_soc_pad_ctrl(host, ios->signal_voltage);
/*
* If Vqmmc is fixed on platform, vqmmc regulator should be unavailable.
* Thus SDHCI_CTRL_VDD_180 bit might not work then.
* Skip the standard voltage switch to avoid any issue.
*/
if (PTR_ERR(mmc->supply.vqmmc) == -ENODEV)
return 0;
return sdhci_start_signal_voltage_switch(mmc, ios);
}
/*
* Update card type.
* priv->init_card_type will be used in PHY timing adjustment.
*/
static void xenon_init_card(struct mmc_host *mmc, struct mmc_card *card)
{
struct sdhci_host *host = mmc_priv(mmc);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
/* Update card type*/
priv->init_card_type = card->type;
}
static int xenon_execute_tuning(struct mmc_host *mmc, u32 opcode)
{
struct sdhci_host *host = mmc_priv(mmc);
if (host->timing == MMC_TIMING_UHS_DDR50)
return 0;
/*
* Currently force Xenon driver back to support mode 1 only,
* even though Xenon might claim to support mode 2 or mode 3.
* It requires more time to test mode 2/mode 3 on more platforms.
*/
if (host->tuning_mode != SDHCI_TUNING_MODE_1)
xenon_retune_setup(host);
return sdhci_execute_tuning(mmc, opcode);
}
static void xenon_enable_sdio_irq(struct mmc_host *mmc, int enable)
{
struct sdhci_host *host = mmc_priv(mmc);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
u32 reg;
u8 sdhc_id = priv->sdhc_id;
sdhci_enable_sdio_irq(mmc, enable);
if (enable) {
/*
* Set SDIO Card Inserted indication
* to enable detecting SDIO async irq.
*/
reg = sdhci_readl(host, XENON_SYS_CFG_INFO);
reg |= (1 << (sdhc_id + XENON_SLOT_TYPE_SDIO_SHIFT));
sdhci_writel(host, reg, XENON_SYS_CFG_INFO);
} else {
/* Clear SDIO Card Inserted indication */
reg = sdhci_readl(host, XENON_SYS_CFG_INFO);
reg &= ~(1 << (sdhc_id + XENON_SLOT_TYPE_SDIO_SHIFT));
sdhci_writel(host, reg, XENON_SYS_CFG_INFO);
}
}
static void xenon_replace_mmc_host_ops(struct sdhci_host *host)
{
host->mmc_host_ops.set_ios = xenon_set_ios;
host->mmc_host_ops.start_signal_voltage_switch =
xenon_start_signal_voltage_switch;
host->mmc_host_ops.init_card = xenon_init_card;
host->mmc_host_ops.execute_tuning = xenon_execute_tuning;
host->mmc_host_ops.enable_sdio_irq = xenon_enable_sdio_irq;
}
/*
* Parse Xenon specific DT properties:
* sdhc-id: the index of current SDHC.
* Refer to XENON_SYS_CFG_INFO register
* tun-count: the interval between re-tuning
*/
static int xenon_probe_dt(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct sdhci_host *host = platform_get_drvdata(pdev);
struct mmc_host *mmc = host->mmc;
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
u32 sdhc_id, nr_sdhc;
u32 tuning_count;
/* Disable HS200 on Armada AP806 */
if (of_device_is_compatible(np, "marvell,armada-ap806-sdhci"))
host->quirks2 |= SDHCI_QUIRK2_BROKEN_HS200;
sdhc_id = 0x0;
if (!of_property_read_u32(np, "marvell,xenon-sdhc-id", &sdhc_id)) {
nr_sdhc = sdhci_readl(host, XENON_SYS_CFG_INFO);
nr_sdhc &= XENON_NR_SUPPORTED_SLOT_MASK;
if (unlikely(sdhc_id > nr_sdhc)) {
dev_err(mmc_dev(mmc), "SDHC Index %d exceeds Number of SDHCs %d\n",
sdhc_id, nr_sdhc);
return -EINVAL;
}
}
priv->sdhc_id = sdhc_id;
tuning_count = XENON_DEF_TUNING_COUNT;
if (!of_property_read_u32(np, "marvell,xenon-tun-count",
&tuning_count)) {
if (unlikely(tuning_count >= XENON_TMR_RETUN_NO_PRESENT)) {
dev_err(mmc_dev(mmc), "Wrong Re-tuning Count. Set default value %d\n",
XENON_DEF_TUNING_COUNT);
tuning_count = XENON_DEF_TUNING_COUNT;
}
}
priv->tuning_count = tuning_count;
return xenon_phy_parse_dt(np, host);
}
static int xenon_sdhc_prepare(struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
u8 sdhc_id = priv->sdhc_id;
/* Enable SDHC */
xenon_enable_sdhc(host, sdhc_id);
/* Enable ACG */
xenon_set_acg(host, true);
/* Enable Parallel Transfer Mode */
xenon_enable_sdhc_parallel_tran(host, sdhc_id);
/* Disable SDCLK-Off-While-Idle before card init */
xenon_set_sdclk_off_idle(host, sdhc_id, false);
xenon_mask_cmd_conflict_err(host);
return 0;
}
static void xenon_sdhc_unprepare(struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
u8 sdhc_id = priv->sdhc_id;
/* disable SDHC */
xenon_disable_sdhc(host, sdhc_id);
}
static int xenon_probe(struct platform_device *pdev)
{
struct sdhci_pltfm_host *pltfm_host;
struct sdhci_host *host;
struct xenon_priv *priv;
int err;
host = sdhci_pltfm_init(pdev, &sdhci_xenon_pdata,
sizeof(struct xenon_priv));
if (IS_ERR(host))
return PTR_ERR(host);
pltfm_host = sdhci_priv(host);
priv = sdhci_pltfm_priv(pltfm_host);
/*
* Link Xenon specific mmc_host_ops function,
* to replace standard ones in sdhci_ops.
*/
xenon_replace_mmc_host_ops(host);
pltfm_host->clk = devm_clk_get(&pdev->dev, "core");
if (IS_ERR(pltfm_host->clk)) {
err = PTR_ERR(pltfm_host->clk);
dev_err(&pdev->dev, "Failed to setup input clk: %d\n", err);
goto free_pltfm;
}
err = clk_prepare_enable(pltfm_host->clk);
if (err)
goto free_pltfm;
err = mmc_of_parse(host->mmc);
if (err)
goto err_clk;
sdhci_get_of_property(pdev);
xenon_set_acg(host, false);
/* Xenon specific dt parse */
err = xenon_probe_dt(pdev);
if (err)
goto err_clk;
err = xenon_sdhc_prepare(host);
if (err)
goto clean_phy_param;
err = sdhci_add_host(host);
if (err)
goto remove_sdhc;
return 0;
remove_sdhc:
xenon_sdhc_unprepare(host);
clean_phy_param:
xenon_clean_phy(host);
err_clk:
clk_disable_unprepare(pltfm_host->clk);
free_pltfm:
sdhci_pltfm_free(pdev);
return err;
}
static int xenon_remove(struct platform_device *pdev)
{
struct sdhci_host *host = platform_get_drvdata(pdev);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
xenon_clean_phy(host);
sdhci_remove_host(host, 0);
xenon_sdhc_unprepare(host);
clk_disable_unprepare(pltfm_host->clk);
sdhci_pltfm_free(pdev);
return 0;
}
static const struct of_device_id sdhci_xenon_dt_ids[] = {
{ .compatible = "marvell,armada-ap806-sdhci",},
{ .compatible = "marvell,armada-cp110-sdhci",},
{ .compatible = "marvell,armada-3700-sdhci",},
{}
};
MODULE_DEVICE_TABLE(of, sdhci_xenon_dt_ids);
static struct platform_driver sdhci_xenon_driver = {
.driver = {
.name = "xenon-sdhci",
.of_match_table = sdhci_xenon_dt_ids,
.pm = &sdhci_pltfm_pmops,
},
.probe = xenon_probe,
.remove = xenon_remove,
};
module_platform_driver(sdhci_xenon_driver);
MODULE_DESCRIPTION("SDHCI platform driver for Marvell Xenon SDHC");
MODULE_AUTHOR("Hu Ziji <huziji@marvell.com>");
MODULE_LICENSE("GPL v2");

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drivers/mmc/host/sdhci-xenon.h Normal file
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/*
* Copyright (C) 2016 Marvell, All Rights Reserved.
*
* Author: Hu Ziji <huziji@marvell.com>
* Date: 2016-8-24
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation version 2.
*/
#ifndef SDHCI_XENON_H_
#define SDHCI_XENON_H_
/* Register Offset of Xenon SDHC self-defined register */
#define XENON_SYS_CFG_INFO 0x0104
#define XENON_SLOT_TYPE_SDIO_SHIFT 24
#define XENON_NR_SUPPORTED_SLOT_MASK 0x7
#define XENON_SYS_OP_CTRL 0x0108
#define XENON_AUTO_CLKGATE_DISABLE_MASK BIT(20)
#define XENON_SDCLK_IDLEOFF_ENABLE_SHIFT 8
#define XENON_SLOT_ENABLE_SHIFT 0
#define XENON_SYS_EXT_OP_CTRL 0x010C
#define XENON_MASK_CMD_CONFLICT_ERR BIT(8)
#define XENON_SLOT_OP_STATUS_CTRL 0x0128
#define XENON_TUN_CONSECUTIVE_TIMES_SHIFT 16
#define XENON_TUN_CONSECUTIVE_TIMES_MASK 0x7
#define XENON_TUN_CONSECUTIVE_TIMES 0x4
#define XENON_TUNING_STEP_SHIFT 12
#define XENON_TUNING_STEP_MASK 0xF
#define XENON_TUNING_STEP_DIVIDER BIT(6)
#define XENON_SLOT_EMMC_CTRL 0x0130
#define XENON_ENABLE_DATA_STROBE BIT(24)
#define XENON_SLOT_RETUNING_REQ_CTRL 0x0144
/* retuning compatible */
#define XENON_RETUNING_COMPATIBLE 0x1
#define XENON_SLOT_EXT_PRESENT_STATE 0x014C
#define XENON_DLL_LOCK_STATE 0x1
#define XENON_SLOT_DLL_CUR_DLY_VAL 0x0150
/* Tuning Parameter */
#define XENON_TMR_RETUN_NO_PRESENT 0xF
#define XENON_DEF_TUNING_COUNT 0x9
#define XENON_DEFAULT_SDCLK_FREQ 400000
#define XENON_LOWEST_SDCLK_FREQ 100000
/* Xenon specific Mode Select value */
#define XENON_CTRL_HS200 0x5
#define XENON_CTRL_HS400 0x6
struct xenon_priv {
unsigned char tuning_count;
/* idx of SDHC */
u8 sdhc_id;
/*
* eMMC/SD/SDIO require different register settings.
* Xenon driver has to recognize card type
* before mmc_host->card is not available.
* This field records the card type during init.
* It is updated in xenon_init_card().
*
* It is only valid during initialization after it is updated.
* Do not access this variable in normal transfers after
* initialization completes.
*/
unsigned int init_card_type;
/*
* The bus_width, timing, and clock fields in below
* record the current ios setting of Xenon SDHC.
* Driver will adjust PHY setting if any change to
* ios affects PHY timing.
*/
unsigned char bus_width;
unsigned char timing;
unsigned int clock;
int phy_type;
/*
* Contains board-specific PHY parameters
* passed from device tree.
*/
void *phy_params;
struct xenon_emmc_phy_regs *emmc_phy_regs;
};
int xenon_phy_adj(struct sdhci_host *host, struct mmc_ios *ios);
void xenon_clean_phy(struct sdhci_host *host);
int xenon_phy_parse_dt(struct device_node *np,
struct sdhci_host *host);
void xenon_soc_pad_ctrl(struct sdhci_host *host,
unsigned char signal_voltage);
#endif

449
drivers/mmc/host/sdhci.c
View file

@ -14,6 +14,7 @@
*/
#include <linux/delay.h>
#include <linux/ktime.h>
#include <linux/highmem.h>
#include <linux/io.h>
#include <linux/module.h>
@ -37,7 +38,10 @@
#define DRIVER_NAME "sdhci"
#define DBG(f, x...) \
pr_debug(DRIVER_NAME " [%s()]: " f, __func__,## x)
pr_debug("%s: " DRIVER_NAME ": " f, mmc_hostname(host->mmc), ## x)
#define SDHCI_DUMP(f, x...) \
pr_err("%s: " DRIVER_NAME ": " f, mmc_hostname(host->mmc), ## x)
#define MAX_TUNING_LOOP 40
@ -48,61 +52,68 @@ static void sdhci_finish_data(struct sdhci_host *);
static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable);
static void sdhci_dumpregs(struct sdhci_host *host)
void sdhci_dumpregs(struct sdhci_host *host)
{
pr_err(DRIVER_NAME ": =========== REGISTER DUMP (%s)===========\n",
mmc_hostname(host->mmc));
SDHCI_DUMP("============ SDHCI REGISTER DUMP ===========\n");
pr_err(DRIVER_NAME ": Sys addr: 0x%08x | Version: 0x%08x\n",
sdhci_readl(host, SDHCI_DMA_ADDRESS),
sdhci_readw(host, SDHCI_HOST_VERSION));
pr_err(DRIVER_NAME ": Blk size: 0x%08x | Blk cnt: 0x%08x\n",
sdhci_readw(host, SDHCI_BLOCK_SIZE),
sdhci_readw(host, SDHCI_BLOCK_COUNT));
pr_err(DRIVER_NAME ": Argument: 0x%08x | Trn mode: 0x%08x\n",
sdhci_readl(host, SDHCI_ARGUMENT),
sdhci_readw(host, SDHCI_TRANSFER_MODE));
pr_err(DRIVER_NAME ": Present: 0x%08x | Host ctl: 0x%08x\n",
sdhci_readl(host, SDHCI_PRESENT_STATE),
sdhci_readb(host, SDHCI_HOST_CONTROL));
pr_err(DRIVER_NAME ": Power: 0x%08x | Blk gap: 0x%08x\n",
sdhci_readb(host, SDHCI_POWER_CONTROL),
sdhci_readb(host, SDHCI_BLOCK_GAP_CONTROL));
pr_err(DRIVER_NAME ": Wake-up: 0x%08x | Clock: 0x%08x\n",
sdhci_readb(host, SDHCI_WAKE_UP_CONTROL),
sdhci_readw(host, SDHCI_CLOCK_CONTROL));
pr_err(DRIVER_NAME ": Timeout: 0x%08x | Int stat: 0x%08x\n",
sdhci_readb(host, SDHCI_TIMEOUT_CONTROL),
sdhci_readl(host, SDHCI_INT_STATUS));
pr_err(DRIVER_NAME ": Int enab: 0x%08x | Sig enab: 0x%08x\n",
sdhci_readl(host, SDHCI_INT_ENABLE),
sdhci_readl(host, SDHCI_SIGNAL_ENABLE));
pr_err(DRIVER_NAME ": AC12 err: 0x%08x | Slot int: 0x%08x\n",
sdhci_readw(host, SDHCI_ACMD12_ERR),
sdhci_readw(host, SDHCI_SLOT_INT_STATUS));
pr_err(DRIVER_NAME ": Caps: 0x%08x | Caps_1: 0x%08x\n",
sdhci_readl(host, SDHCI_CAPABILITIES),
sdhci_readl(host, SDHCI_CAPABILITIES_1));
pr_err(DRIVER_NAME ": Cmd: 0x%08x | Max curr: 0x%08x\n",
sdhci_readw(host, SDHCI_COMMAND),
sdhci_readl(host, SDHCI_MAX_CURRENT));
pr_err(DRIVER_NAME ": Host ctl2: 0x%08x\n",
sdhci_readw(host, SDHCI_HOST_CONTROL2));
SDHCI_DUMP("Sys addr: 0x%08x | Version: 0x%08x\n",
sdhci_readl(host, SDHCI_DMA_ADDRESS),
sdhci_readw(host, SDHCI_HOST_VERSION));
SDHCI_DUMP("Blk size: 0x%08x | Blk cnt: 0x%08x\n",
sdhci_readw(host, SDHCI_BLOCK_SIZE),
sdhci_readw(host, SDHCI_BLOCK_COUNT));
SDHCI_DUMP("Argument: 0x%08x | Trn mode: 0x%08x\n",
sdhci_readl(host, SDHCI_ARGUMENT),
sdhci_readw(host, SDHCI_TRANSFER_MODE));
SDHCI_DUMP("Present: 0x%08x | Host ctl: 0x%08x\n",
sdhci_readl(host, SDHCI_PRESENT_STATE),
sdhci_readb(host, SDHCI_HOST_CONTROL));
SDHCI_DUMP("Power: 0x%08x | Blk gap: 0x%08x\n",
sdhci_readb(host, SDHCI_POWER_CONTROL),
sdhci_readb(host, SDHCI_BLOCK_GAP_CONTROL));
SDHCI_DUMP("Wake-up: 0x%08x | Clock: 0x%08x\n",
sdhci_readb(host, SDHCI_WAKE_UP_CONTROL),
sdhci_readw(host, SDHCI_CLOCK_CONTROL));
SDHCI_DUMP("Timeout: 0x%08x | Int stat: 0x%08x\n",
sdhci_readb(host, SDHCI_TIMEOUT_CONTROL),
sdhci_readl(host, SDHCI_INT_STATUS));
SDHCI_DUMP("Int enab: 0x%08x | Sig enab: 0x%08x\n",
sdhci_readl(host, SDHCI_INT_ENABLE),
sdhci_readl(host, SDHCI_SIGNAL_ENABLE));
SDHCI_DUMP("AC12 err: 0x%08x | Slot int: 0x%08x\n",
sdhci_readw(host, SDHCI_ACMD12_ERR),
sdhci_readw(host, SDHCI_SLOT_INT_STATUS));
SDHCI_DUMP("Caps: 0x%08x | Caps_1: 0x%08x\n",
sdhci_readl(host, SDHCI_CAPABILITIES),
sdhci_readl(host, SDHCI_CAPABILITIES_1));
SDHCI_DUMP("Cmd: 0x%08x | Max curr: 0x%08x\n",
sdhci_readw(host, SDHCI_COMMAND),
sdhci_readl(host, SDHCI_MAX_CURRENT));
SDHCI_DUMP("Resp[0]: 0x%08x | Resp[1]: 0x%08x\n",
sdhci_readl(host, SDHCI_RESPONSE),
sdhci_readl(host, SDHCI_RESPONSE + 4));
SDHCI_DUMP("Resp[2]: 0x%08x | Resp[3]: 0x%08x\n",
sdhci_readl(host, SDHCI_RESPONSE + 8),
sdhci_readl(host, SDHCI_RESPONSE + 12));
SDHCI_DUMP("Host ctl2: 0x%08x\n",
sdhci_readw(host, SDHCI_HOST_CONTROL2));
if (host->flags & SDHCI_USE_ADMA) {
if (host->flags & SDHCI_USE_64_BIT_DMA)
pr_err(DRIVER_NAME ": ADMA Err: 0x%08x | ADMA Ptr: 0x%08x%08x\n",
readl(host->ioaddr + SDHCI_ADMA_ERROR),
readl(host->ioaddr + SDHCI_ADMA_ADDRESS_HI),
readl(host->ioaddr + SDHCI_ADMA_ADDRESS));
else
pr_err(DRIVER_NAME ": ADMA Err: 0x%08x | ADMA Ptr: 0x%08x\n",
readl(host->ioaddr + SDHCI_ADMA_ERROR),
readl(host->ioaddr + SDHCI_ADMA_ADDRESS));
if (host->flags & SDHCI_USE_64_BIT_DMA) {
SDHCI_DUMP("ADMA Err: 0x%08x | ADMA Ptr: 0x%08x%08x\n",
sdhci_readl(host, SDHCI_ADMA_ERROR),
sdhci_readl(host, SDHCI_ADMA_ADDRESS_HI),
sdhci_readl(host, SDHCI_ADMA_ADDRESS));
} else {
SDHCI_DUMP("ADMA Err: 0x%08x | ADMA Ptr: 0x%08x\n",
sdhci_readl(host, SDHCI_ADMA_ERROR),
sdhci_readl(host, SDHCI_ADMA_ADDRESS));
}
}
pr_err(DRIVER_NAME ": ===========================================\n");
SDHCI_DUMP("============================================\n");
}
EXPORT_SYMBOL_GPL(sdhci_dumpregs);
/*****************************************************************************\
* *
@ -165,7 +176,7 @@ static void sdhci_runtime_pm_bus_off(struct sdhci_host *host)
void sdhci_reset(struct sdhci_host *host, u8 mask)
{
unsigned long timeout;
ktime_t timeout;
sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET);
@ -177,18 +188,17 @@ void sdhci_reset(struct sdhci_host *host, u8 mask)
}
/* Wait max 100 ms */
timeout = 100;
timeout = ktime_add_ms(ktime_get(), 100);
/* hw clears the bit when it's done */
while (sdhci_readb(host, SDHCI_SOFTWARE_RESET) & mask) {
if (timeout == 0) {
if (ktime_after(ktime_get(), timeout)) {
pr_err("%s: Reset 0x%x never completed.\n",
mmc_hostname(host->mmc), (int)mask);
sdhci_dumpregs(host);
return;
}
timeout--;
mdelay(1);
udelay(10);
}
}
EXPORT_SYMBOL_GPL(sdhci_reset);
@ -215,15 +225,8 @@ static void sdhci_do_reset(struct sdhci_host *host, u8 mask)
}
}
static void sdhci_init(struct sdhci_host *host, int soft)
static void sdhci_set_default_irqs(struct sdhci_host *host)
{
struct mmc_host *mmc = host->mmc;
if (soft)
sdhci_do_reset(host, SDHCI_RESET_CMD|SDHCI_RESET_DATA);
else
sdhci_do_reset(host, SDHCI_RESET_ALL);
host->ier = SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT |
SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT |
SDHCI_INT_INDEX | SDHCI_INT_END_BIT | SDHCI_INT_CRC |
@ -236,6 +239,20 @@ static void sdhci_init(struct sdhci_host *host, int soft)
sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);
sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
}
static void sdhci_init(struct sdhci_host *host, int soft)
{
struct mmc_host *mmc = host->mmc;
if (soft)
sdhci_do_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
else
sdhci_do_reset(host, SDHCI_RESET_ALL);
sdhci_set_default_irqs(host);
host->cqe_on = false;
if (soft) {
/* force clock reconfiguration */
@ -485,8 +502,7 @@ static int sdhci_pre_dma_transfer(struct sdhci_host *host,
return data->sg_count;
sg_count = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
data->flags & MMC_DATA_WRITE ?
DMA_TO_DEVICE : DMA_FROM_DEVICE);
mmc_get_dma_dir(data));
if (sg_count == 0)
return -ENOSPC;
@ -715,8 +731,8 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd)
}
if (count >= 0xF) {
DBG("%s: Too large timeout 0x%x requested for CMD%d!\n",
mmc_hostname(host->mmc), count, cmd->opcode);
DBG("Too large timeout 0x%x requested for CMD%d!\n",
count, cmd->opcode);
count = 0xE;
}
@ -1346,25 +1362,22 @@ EXPORT_SYMBOL_GPL(sdhci_calc_clk);
void sdhci_enable_clk(struct sdhci_host *host, u16 clk)
{
unsigned long timeout;
ktime_t timeout;
clk |= SDHCI_CLOCK_INT_EN;
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
/* Wait max 20 ms */
timeout = 20;
timeout = ktime_add_ms(ktime_get(), 20);
while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL))
& SDHCI_CLOCK_INT_STABLE)) {
if (timeout == 0) {
if (ktime_after(ktime_get(), timeout)) {
pr_err("%s: Internal clock never stabilised.\n",
mmc_hostname(host->mmc));
sdhci_dumpregs(host);
return;
}
timeout--;
spin_unlock_irq(&host->lock);
usleep_range(900, 1100);
spin_lock_irq(&host->lock);
udelay(10);
}
clk |= SDHCI_CLOCK_CARD_EN;
@ -1393,9 +1406,7 @@ static void sdhci_set_power_reg(struct sdhci_host *host, unsigned char mode,
{
struct mmc_host *mmc = host->mmc;
spin_unlock_irq(&host->lock);
mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, vdd);
spin_lock_irq(&host->lock);
if (mode != MMC_POWER_OFF)
sdhci_writeb(host, SDHCI_POWER_ON, SDHCI_POWER_CONTROL);
@ -1572,19 +1583,15 @@ void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing)
}
EXPORT_SYMBOL_GPL(sdhci_set_uhs_signaling);
static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct sdhci_host *host = mmc_priv(mmc);
unsigned long flags;
u8 ctrl;
if (ios->power_mode == MMC_POWER_UNDEFINED)
return;
spin_lock_irqsave(&host->lock, flags);
if (host->flags & SDHCI_DEVICE_DEAD) {
spin_unlock_irqrestore(&host->lock, flags);
if (!IS_ERR(mmc->supply.vmmc) &&
ios->power_mode == MMC_POWER_OFF)
mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0);
@ -1730,8 +1737,8 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
sdhci_do_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
}
EXPORT_SYMBOL_GPL(sdhci_set_ios);
static int sdhci_get_cd(struct mmc_host *mmc)
{
@ -1825,7 +1832,7 @@ static void sdhci_enable_sdio_irq_nolock(struct sdhci_host *host, int enable)
}
}
static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
{
struct sdhci_host *host = mmc_priv(mmc);
unsigned long flags;
@ -1845,9 +1852,10 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
if (!enable)
pm_runtime_put_noidle(host->mmc->parent);
}
EXPORT_SYMBOL_GPL(sdhci_enable_sdio_irq);
static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
struct mmc_ios *ios)
int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
struct mmc_ios *ios)
{
struct sdhci_host *host = mmc_priv(mmc);
u16 ctrl;
@ -1939,6 +1947,7 @@ static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
return 0;
}
}
EXPORT_SYMBOL_GPL(sdhci_start_signal_voltage_switch);
static int sdhci_card_busy(struct mmc_host *mmc)
{
@ -2003,8 +2012,7 @@ static void sdhci_reset_tuning(struct sdhci_host *host)
sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
}
static void sdhci_abort_tuning(struct sdhci_host *host, u32 opcode,
unsigned long flags)
static void sdhci_abort_tuning(struct sdhci_host *host, u32 opcode)
{
sdhci_reset_tuning(host);
@ -2013,9 +2021,7 @@ static void sdhci_abort_tuning(struct sdhci_host *host, u32 opcode,
sdhci_end_tuning(host);
spin_unlock_irqrestore(&host->lock, flags);
mmc_abort_tuning(host->mmc, opcode);
spin_lock_irqsave(&host->lock, flags);
}
/*
@ -2025,12 +2031,14 @@ static void sdhci_abort_tuning(struct sdhci_host *host, u32 opcode,
* interrupt setup is different to other commands and there is no timeout
* interrupt so special handling is needed.
*/
static void sdhci_send_tuning(struct sdhci_host *host, u32 opcode,
unsigned long flags)
static void sdhci_send_tuning(struct sdhci_host *host, u32 opcode)
{
struct mmc_host *mmc = host->mmc;
struct mmc_command cmd = {};
struct mmc_request mrq = {};
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
cmd.opcode = opcode;
cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
@ -2064,17 +2072,16 @@ static void sdhci_send_tuning(struct sdhci_host *host, u32 opcode,
host->tuning_done = 0;
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
/* Wait for Buffer Read Ready interrupt */
wait_event_timeout(host->buf_ready_int, (host->tuning_done == 1),
msecs_to_jiffies(50));
spin_lock_irqsave(&host->lock, flags);
}
static void __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode,
unsigned long flags)
static void __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)
{
int i;
@ -2085,12 +2092,12 @@ static void __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode,
for (i = 0; i < MAX_TUNING_LOOP; i++) {
u16 ctrl;
sdhci_send_tuning(host, opcode, flags);
sdhci_send_tuning(host, opcode);
if (!host->tuning_done) {
pr_info("%s: Tuning timeout, falling back to fixed sampling clock\n",
mmc_hostname(host->mmc));
sdhci_abort_tuning(host, opcode, flags);
sdhci_abort_tuning(host, opcode);
return;
}
@ -2101,9 +2108,9 @@ static void __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode,
break;
}
/* eMMC spec does not require a delay between tuning cycles */
if (opcode == MMC_SEND_TUNING_BLOCK)
mdelay(1);
/* Spec does not require a delay between tuning cycles */
if (host->tuning_delay > 0)
mdelay(host->tuning_delay);
}
pr_info("%s: Tuning failed, falling back to fixed sampling clock\n",
@ -2115,12 +2122,9 @@ int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
{
struct sdhci_host *host = mmc_priv(mmc);
int err = 0;
unsigned long flags;
unsigned int tuning_count = 0;
bool hs400_tuning;
spin_lock_irqsave(&host->lock, flags);
hs400_tuning = host->flags & SDHCI_HS400_TUNING;
if (host->tuning_mode == SDHCI_TUNING_MODE_1)
@ -2137,7 +2141,7 @@ int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
/* HS400 tuning is done in HS200 mode */
case MMC_TIMING_MMC_HS400:
err = -EINVAL;
goto out_unlock;
goto out;
case MMC_TIMING_MMC_HS200:
/*
@ -2158,44 +2162,31 @@ int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
/* FALLTHROUGH */
default:
goto out_unlock;
goto out;
}
if (host->ops->platform_execute_tuning) {
spin_unlock_irqrestore(&host->lock, flags);
err = host->ops->platform_execute_tuning(host, opcode);
spin_lock_irqsave(&host->lock, flags);
goto out_unlock;
goto out;
}
host->mmc->retune_period = tuning_count;
if (host->tuning_delay < 0)
host->tuning_delay = opcode == MMC_SEND_TUNING_BLOCK;
sdhci_start_tuning(host);
__sdhci_execute_tuning(host, opcode, flags);
__sdhci_execute_tuning(host, opcode);
sdhci_end_tuning(host);
out_unlock:
out:
host->flags &= ~SDHCI_HS400_TUNING;
spin_unlock_irqrestore(&host->lock, flags);
return err;
}
EXPORT_SYMBOL_GPL(sdhci_execute_tuning);
static int sdhci_select_drive_strength(struct mmc_card *card,
unsigned int max_dtr, int host_drv,
int card_drv, int *drv_type)
{
struct sdhci_host *host = mmc_priv(card->host);
if (!host->ops->select_drive_strength)
return 0;
return host->ops->select_drive_strength(host, card, max_dtr, host_drv,
card_drv, drv_type);
}
static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable)
{
/* Host Controller v3.00 defines preset value registers */
@ -2233,8 +2224,7 @@ static void sdhci_post_req(struct mmc_host *mmc, struct mmc_request *mrq,
if (data->host_cookie != COOKIE_UNMAPPED)
dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
data->flags & MMC_DATA_WRITE ?
DMA_TO_DEVICE : DMA_FROM_DEVICE);
mmc_get_dma_dir(data));
data->host_cookie = COOKIE_UNMAPPED;
}
@ -2309,7 +2299,6 @@ static const struct mmc_host_ops sdhci_ops = {
.start_signal_voltage_switch = sdhci_start_signal_voltage_switch,
.prepare_hs400_tuning = sdhci_prepare_hs400_tuning,
.execute_tuning = sdhci_execute_tuning,
.select_drive_strength = sdhci_select_drive_strength,
.card_event = sdhci_card_event,
.card_busy = sdhci_card_busy,
};
@ -2351,8 +2340,7 @@ static bool sdhci_request_done(struct sdhci_host *host)
if (data && data->host_cookie == COOKIE_MAPPED) {
dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
(data->flags & MMC_DATA_READ) ?
DMA_FROM_DEVICE : DMA_TO_DEVICE);
mmc_get_dma_dir(data));
data->host_cookie = COOKIE_UNMAPPED;
}
}
@ -2517,7 +2505,6 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask)
#ifdef CONFIG_MMC_DEBUG
static void sdhci_adma_show_error(struct sdhci_host *host)
{
const char *name = mmc_hostname(host->mmc);
void *desc = host->adma_table;
sdhci_dumpregs(host);
@ -2526,14 +2513,14 @@ static void sdhci_adma_show_error(struct sdhci_host *host)
struct sdhci_adma2_64_desc *dma_desc = desc;
if (host->flags & SDHCI_USE_64_BIT_DMA)
DBG("%s: %p: DMA 0x%08x%08x, LEN 0x%04x, Attr=0x%02x\n",
name, desc, le32_to_cpu(dma_desc->addr_hi),
DBG("%p: DMA 0x%08x%08x, LEN 0x%04x, Attr=0x%02x\n",
desc, le32_to_cpu(dma_desc->addr_hi),
le32_to_cpu(dma_desc->addr_lo),
le16_to_cpu(dma_desc->len),
le16_to_cpu(dma_desc->cmd));
else
DBG("%s: %p: DMA 0x%08x, LEN 0x%04x, Attr=0x%02x\n",
name, desc, le32_to_cpu(dma_desc->addr_lo),
DBG("%p: DMA 0x%08x, LEN 0x%04x, Attr=0x%02x\n",
desc, le32_to_cpu(dma_desc->addr_lo),
le16_to_cpu(dma_desc->len),
le16_to_cpu(dma_desc->cmd));
@ -2649,10 +2636,8 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1)) +
SDHCI_DEFAULT_BOUNDARY_SIZE;
host->data->bytes_xfered = dmanow - dmastart;
DBG("%s: DMA base 0x%08x, transferred 0x%06x bytes,"
" next 0x%08x\n",
mmc_hostname(host->mmc), dmastart,
host->data->bytes_xfered, dmanow);
DBG("DMA base 0x%08x, transferred 0x%06x bytes, next 0x%08x\n",
dmastart, host->data->bytes_xfered, dmanow);
sdhci_writel(host, dmanow, SDHCI_DMA_ADDRESS);
}
@ -2692,14 +2677,19 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
}
do {
DBG("IRQ status 0x%08x\n", intmask);
if (host->ops->irq) {
intmask = host->ops->irq(host, intmask);
if (!intmask)
goto cont;
}
/* Clear selected interrupts. */
mask = intmask & (SDHCI_INT_CMD_MASK | SDHCI_INT_DATA_MASK |
SDHCI_INT_BUS_POWER);
sdhci_writel(host, mask, SDHCI_INT_STATUS);
DBG("*** %s got interrupt: 0x%08x\n",
mmc_hostname(host->mmc), intmask);
if (intmask & (SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE)) {
u32 present = sdhci_readl(host, SDHCI_PRESENT_STATE) &
SDHCI_CARD_PRESENT;
@ -2759,7 +2749,7 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
unexpected |= intmask;
sdhci_writel(host, intmask, SDHCI_INT_STATUS);
}
cont:
if (result == IRQ_NONE)
result = IRQ_HANDLED;
@ -2858,8 +2848,6 @@ int sdhci_suspend_host(struct sdhci_host *host)
sdhci_disable_card_detection(host);
mmc_retune_timer_stop(host->mmc);
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
if (!device_may_wakeup(mmc_dev(host->mmc))) {
host->ier = 0;
@ -2920,8 +2908,6 @@ int sdhci_runtime_suspend_host(struct sdhci_host *host)
unsigned long flags;
mmc_retune_timer_stop(host->mmc);
if (host->tuning_mode != SDHCI_TUNING_MODE_3)
mmc_retune_needed(host->mmc);
spin_lock_irqsave(&host->lock, flags);
host->ier &= SDHCI_INT_CARD_INT;
@ -2990,6 +2976,119 @@ EXPORT_SYMBOL_GPL(sdhci_runtime_resume_host);
#endif /* CONFIG_PM */
/*****************************************************************************\
* *
* Command Queue Engine (CQE) helpers *
* *
\*****************************************************************************/
void sdhci_cqe_enable(struct mmc_host *mmc)
{
struct sdhci_host *host = mmc_priv(mmc);
unsigned long flags;
u8 ctrl;
spin_lock_irqsave(&host->lock, flags);
ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
ctrl &= ~SDHCI_CTRL_DMA_MASK;
if (host->flags & SDHCI_USE_64_BIT_DMA)
ctrl |= SDHCI_CTRL_ADMA64;
else
ctrl |= SDHCI_CTRL_ADMA32;
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
sdhci_writew(host, SDHCI_MAKE_BLKSZ(SDHCI_DEFAULT_BOUNDARY_ARG, 512),
SDHCI_BLOCK_SIZE);
/* Set maximum timeout */
sdhci_writeb(host, 0xE, SDHCI_TIMEOUT_CONTROL);
host->ier = host->cqe_ier;
sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);
sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
host->cqe_on = true;
pr_debug("%s: sdhci: CQE on, IRQ mask %#x, IRQ status %#x\n",
mmc_hostname(mmc), host->ier,
sdhci_readl(host, SDHCI_INT_STATUS));
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
}
EXPORT_SYMBOL_GPL(sdhci_cqe_enable);
void sdhci_cqe_disable(struct mmc_host *mmc, bool recovery)
{
struct sdhci_host *host = mmc_priv(mmc);
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
sdhci_set_default_irqs(host);
host->cqe_on = false;
if (recovery) {
sdhci_do_reset(host, SDHCI_RESET_CMD);
sdhci_do_reset(host, SDHCI_RESET_DATA);
}
pr_debug("%s: sdhci: CQE off, IRQ mask %#x, IRQ status %#x\n",
mmc_hostname(mmc), host->ier,
sdhci_readl(host, SDHCI_INT_STATUS));
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
}
EXPORT_SYMBOL_GPL(sdhci_cqe_disable);
bool sdhci_cqe_irq(struct sdhci_host *host, u32 intmask, int *cmd_error,
int *data_error)
{
u32 mask;
if (!host->cqe_on)
return false;
if (intmask & (SDHCI_INT_INDEX | SDHCI_INT_END_BIT | SDHCI_INT_CRC))
*cmd_error = -EILSEQ;
else if (intmask & SDHCI_INT_TIMEOUT)
*cmd_error = -ETIMEDOUT;
else
*cmd_error = 0;
if (intmask & (SDHCI_INT_DATA_END_BIT | SDHCI_INT_DATA_CRC))
*data_error = -EILSEQ;
else if (intmask & SDHCI_INT_DATA_TIMEOUT)
*data_error = -ETIMEDOUT;
else if (intmask & SDHCI_INT_ADMA_ERROR)
*data_error = -EIO;
else
*data_error = 0;
/* Clear selected interrupts. */
mask = intmask & host->cqe_ier;
sdhci_writel(host, mask, SDHCI_INT_STATUS);
if (intmask & SDHCI_INT_BUS_POWER)
pr_err("%s: Card is consuming too much power!\n",
mmc_hostname(host->mmc));
intmask &= ~(host->cqe_ier | SDHCI_INT_ERROR);
if (intmask) {
sdhci_writel(host, intmask, SDHCI_INT_STATUS);
pr_err("%s: CQE: Unexpected interrupt 0x%08x.\n",
mmc_hostname(host->mmc), intmask);
sdhci_dumpregs(host);
}
return true;
}
EXPORT_SYMBOL_GPL(sdhci_cqe_irq);
/*****************************************************************************\
* *
* Device allocation/registration *
@ -3015,6 +3114,11 @@ struct sdhci_host *sdhci_alloc_host(struct device *dev,
host->flags = SDHCI_SIGNALING_330;
host->cqe_ier = SDHCI_CQE_INT_MASK;
host->cqe_err_ier = SDHCI_CQE_INT_ERR_MASK;
host->tuning_delay = -1;
return host;
}
@ -3297,20 +3401,22 @@ int sdhci_setup_host(struct sdhci_host *host)
if (!(host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)) {
host->timeout_clk = (host->caps & SDHCI_TIMEOUT_CLK_MASK) >>
SDHCI_TIMEOUT_CLK_SHIFT;
if (host->caps & SDHCI_TIMEOUT_CLK_UNIT)
host->timeout_clk *= 1000;
if (host->timeout_clk == 0) {
if (host->ops->get_timeout_clock) {
host->timeout_clk =
host->ops->get_timeout_clock(host);
} else {
if (!host->ops->get_timeout_clock) {
pr_err("%s: Hardware doesn't specify timeout clock frequency.\n",
mmc_hostname(mmc));
ret = -ENODEV;
goto undma;
}
}
if (host->caps & SDHCI_TIMEOUT_CLK_UNIT)
host->timeout_clk *= 1000;
host->timeout_clk =
DIV_ROUND_UP(host->ops->get_timeout_clock(host),
1000);
}
if (override_timeout_clk)
host->timeout_clk = override_timeout_clk;
@ -3332,9 +3438,9 @@ int sdhci_setup_host(struct sdhci_host *host)
!(host->flags & SDHCI_USE_SDMA)) &&
!(host->quirks2 & SDHCI_QUIRK2_ACMD23_BROKEN)) {
host->flags |= SDHCI_AUTO_CMD23;
DBG("%s: Auto-CMD23 available\n", mmc_hostname(mmc));
DBG("Auto-CMD23 available\n");
} else {
DBG("%s: Auto-CMD23 unavailable\n", mmc_hostname(mmc));
DBG("Auto-CMD23 unavailable\n");
}
/*
@ -3598,6 +3704,22 @@ int sdhci_setup_host(struct sdhci_host *host)
}
EXPORT_SYMBOL_GPL(sdhci_setup_host);
void sdhci_cleanup_host(struct sdhci_host *host)
{
struct mmc_host *mmc = host->mmc;
if (!IS_ERR(mmc->supply.vqmmc))
regulator_disable(mmc->supply.vqmmc);
if (host->align_buffer)
dma_free_coherent(mmc_dev(mmc), host->align_buffer_sz +
host->adma_table_sz, host->align_buffer,
host->align_addr);
host->adma_table = NULL;
host->align_buffer = NULL;
}
EXPORT_SYMBOL_GPL(sdhci_cleanup_host);
int __sdhci_add_host(struct sdhci_host *host)
{
struct mmc_host *mmc = host->mmc;
@ -3662,16 +3784,6 @@ int __sdhci_add_host(struct sdhci_host *host)
untasklet:
tasklet_kill(&host->finish_tasklet);
if (!IS_ERR(mmc->supply.vqmmc))
regulator_disable(mmc->supply.vqmmc);
if (host->align_buffer)
dma_free_coherent(mmc_dev(mmc), host->align_buffer_sz +
host->adma_table_sz, host->align_buffer,
host->align_addr);
host->adma_table = NULL;
host->align_buffer = NULL;
return ret;
}
EXPORT_SYMBOL_GPL(__sdhci_add_host);
@ -3684,7 +3796,16 @@ int sdhci_add_host(struct sdhci_host *host)
if (ret)
return ret;
return __sdhci_add_host(host);
ret = __sdhci_add_host(host);
if (ret)
goto cleanup;
return 0;
cleanup:
sdhci_cleanup_host(host);
return ret;
}
EXPORT_SYMBOL_GPL(sdhci_add_host);

65
drivers/mmc/host/sdhci.h
View file

@ -134,6 +134,7 @@
#define SDHCI_INT_CARD_REMOVE 0x00000080
#define SDHCI_INT_CARD_INT 0x00000100
#define SDHCI_INT_RETUNE 0x00001000
#define SDHCI_INT_CQE 0x00004000
#define SDHCI_INT_ERROR 0x00008000
#define SDHCI_INT_TIMEOUT 0x00010000
#define SDHCI_INT_CRC 0x00020000
@ -158,6 +159,13 @@
SDHCI_INT_BLK_GAP)
#define SDHCI_INT_ALL_MASK ((unsigned int)-1)
#define SDHCI_CQE_INT_ERR_MASK ( \
SDHCI_INT_ADMA_ERROR | SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT | \
SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_INDEX | \
SDHCI_INT_END_BIT | SDHCI_INT_CRC | SDHCI_INT_TIMEOUT)
#define SDHCI_CQE_INT_MASK (SDHCI_CQE_INT_ERR_MASK | SDHCI_INT_CQE)
#define SDHCI_ACMD12_ERR 0x3C
#define SDHCI_HOST_CONTROL2 0x3E
@ -518,6 +526,10 @@ struct sdhci_host {
/* cached registers */
u32 ier;
bool cqe_on; /* CQE is operating */
u32 cqe_ier; /* CQE interrupt mask */
u32 cqe_err_ier; /* CQE error interrupt mask */
wait_queue_head_t buf_ready_int; /* Waitqueue for Buffer Read Ready interrupt */
unsigned int tuning_done; /* Condition flag set when CMD19 succeeds */
@ -526,6 +538,8 @@ struct sdhci_host {
#define SDHCI_TUNING_MODE_1 0
#define SDHCI_TUNING_MODE_2 1
#define SDHCI_TUNING_MODE_3 2
/* Delay (ms) between tuning commands */
int tuning_delay;
unsigned long private[0] ____cacheline_aligned;
};
@ -544,9 +558,12 @@ struct sdhci_ops {
void (*set_power)(struct sdhci_host *host, unsigned char mode,
unsigned short vdd);
u32 (*irq)(struct sdhci_host *host, u32 intmask);
int (*enable_dma)(struct sdhci_host *host);
unsigned int (*get_max_clock)(struct sdhci_host *host);
unsigned int (*get_min_clock)(struct sdhci_host *host);
/* get_timeout_clock should return clk rate in unit of Hz */
unsigned int (*get_timeout_clock)(struct sdhci_host *host);
unsigned int (*get_max_timeout_count)(struct sdhci_host *host);
void (*set_timeout)(struct sdhci_host *host,
@ -562,10 +579,6 @@ struct sdhci_ops {
void (*adma_workaround)(struct sdhci_host *host, u32 intmask);
void (*card_event)(struct sdhci_host *host);
void (*voltage_switch)(struct sdhci_host *host);
int (*select_drive_strength)(struct sdhci_host *host,
struct mmc_card *card,
unsigned int max_dtr, int host_drv,
int card_drv, int *drv_type);
};
#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
@ -652,24 +665,23 @@ static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
#endif /* CONFIG_MMC_SDHCI_IO_ACCESSORS */
extern struct sdhci_host *sdhci_alloc_host(struct device *dev,
size_t priv_size);
extern void sdhci_free_host(struct sdhci_host *host);
struct sdhci_host *sdhci_alloc_host(struct device *dev, size_t priv_size);
void sdhci_free_host(struct sdhci_host *host);
static inline void *sdhci_priv(struct sdhci_host *host)
{
return host->private;
}
extern void sdhci_card_detect(struct sdhci_host *host);
extern void __sdhci_read_caps(struct sdhci_host *host, u16 *ver, u32 *caps,
u32 *caps1);
extern int sdhci_setup_host(struct sdhci_host *host);
extern int __sdhci_add_host(struct sdhci_host *host);
extern int sdhci_add_host(struct sdhci_host *host);
extern void sdhci_remove_host(struct sdhci_host *host, int dead);
extern void sdhci_send_command(struct sdhci_host *host,
struct mmc_command *cmd);
void sdhci_card_detect(struct sdhci_host *host);
void __sdhci_read_caps(struct sdhci_host *host, u16 *ver, u32 *caps,
u32 *caps1);
int sdhci_setup_host(struct sdhci_host *host);
void sdhci_cleanup_host(struct sdhci_host *host);
int __sdhci_add_host(struct sdhci_host *host);
int sdhci_add_host(struct sdhci_host *host);
void sdhci_remove_host(struct sdhci_host *host, int dead);
void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd);
static inline void sdhci_read_caps(struct sdhci_host *host)
{
@ -693,13 +705,24 @@ void sdhci_set_bus_width(struct sdhci_host *host, int width);
void sdhci_reset(struct sdhci_host *host, u8 mask);
void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing);
int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode);
void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios);
int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
struct mmc_ios *ios);
void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable);
#ifdef CONFIG_PM
extern int sdhci_suspend_host(struct sdhci_host *host);
extern int sdhci_resume_host(struct sdhci_host *host);
extern void sdhci_enable_irq_wakeups(struct sdhci_host *host);
extern int sdhci_runtime_suspend_host(struct sdhci_host *host);
extern int sdhci_runtime_resume_host(struct sdhci_host *host);
int sdhci_suspend_host(struct sdhci_host *host);
int sdhci_resume_host(struct sdhci_host *host);
void sdhci_enable_irq_wakeups(struct sdhci_host *host);
int sdhci_runtime_suspend_host(struct sdhci_host *host);
int sdhci_runtime_resume_host(struct sdhci_host *host);
#endif
void sdhci_cqe_enable(struct mmc_host *mmc);
void sdhci_cqe_disable(struct mmc_host *mmc, bool recovery);
bool sdhci_cqe_irq(struct sdhci_host *host, u32 intmask, int *cmd_error,
int *data_error);
void sdhci_dumpregs(struct sdhci_host *host);
#endif /* __SDHCI_HW_H */

16
drivers/mmc/host/sunxi-mmc.c
View file

@ -385,14 +385,6 @@ static void sunxi_mmc_init_idma_des(struct sunxi_mmc_host *host,
wmb();
}
static enum dma_data_direction sunxi_mmc_get_dma_dir(struct mmc_data *data)
{
if (data->flags & MMC_DATA_WRITE)
return DMA_TO_DEVICE;
else
return DMA_FROM_DEVICE;
}
static int sunxi_mmc_map_dma(struct sunxi_mmc_host *host,
struct mmc_data *data)
{
@ -400,7 +392,7 @@ static int sunxi_mmc_map_dma(struct sunxi_mmc_host *host,
struct scatterlist *sg;
dma_len = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
sunxi_mmc_get_dma_dir(data));
mmc_get_dma_dir(data));
if (dma_len == 0) {
dev_err(mmc_dev(host->mmc), "dma_map_sg failed\n");
return -ENOMEM;
@ -489,7 +481,7 @@ static void sunxi_mmc_dump_errinfo(struct sunxi_mmc_host *host)
cmd->opcode == SD_IO_RW_DIRECT))
return;
dev_err(mmc_dev(host->mmc),
dev_dbg(mmc_dev(host->mmc),
"smc %d err, cmd %d,%s%s%s%s%s%s%s%s%s%s !!\n",
host->mmc->index, cmd->opcode,
data ? (data->flags & MMC_DATA_WRITE ? " WR" : " RD") : "",
@ -551,7 +543,7 @@ static irqreturn_t sunxi_mmc_finalize_request(struct sunxi_mmc_host *host)
rval |= SDXC_FIFO_RESET;
mmc_writel(host, REG_GCTRL, rval);
dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
sunxi_mmc_get_dma_dir(data));
mmc_get_dma_dir(data));
}
mmc_writel(host, REG_RINTR, 0xffff);
@ -1022,7 +1014,7 @@ static void sunxi_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
if (data)
dma_unmap_sg(mmc_dev(mmc), data->sg, data->sg_len,
sunxi_mmc_get_dma_dir(data));
mmc_get_dma_dir(data));
dev_err(mmc_dev(mmc), "request already pending\n");
mrq->cmd->error = -EBUSY;

12
drivers/mmc/host/tmio_mmc.h
View file

@ -50,7 +50,11 @@
#define CTL_CLK_AND_WAIT_CTL 0x138
#define CTL_RESET_SDIO 0x1e0
/* Definitions for values the CTRL_STATUS register can take. */
/* Definitions for values the CTL_STOP_INTERNAL_ACTION register can take */
#define TMIO_STOP_STP BIT(0)
#define TMIO_STOP_SEC BIT(8)
/* Definitions for values the CTL_STATUS register can take */
#define TMIO_STAT_CMDRESPEND BIT(0)
#define TMIO_STAT_DATAEND BIT(2)
#define TMIO_STAT_CARD_REMOVE BIT(3)
@ -61,7 +65,7 @@
#define TMIO_STAT_CARD_INSERT_A BIT(9)
#define TMIO_STAT_SIGSTATE_A BIT(10)
/* These belong technically to CTRL_STATUS2, but the driver merges them */
/* These belong technically to CTL_STATUS2, but the driver merges them */
#define TMIO_STAT_CMD_IDX_ERR BIT(16)
#define TMIO_STAT_CRCFAIL BIT(17)
#define TMIO_STAT_STOPBIT_ERR BIT(18)
@ -85,7 +89,7 @@
#define TMIO_BBS 512 /* Boot block size */
/* Definitions for values the CTRL_SDIO_STATUS register can take. */
/* Definitions for values the CTL_SDIO_STATUS register can take */
#define TMIO_SDIO_STAT_IOIRQ 0x0001
#define TMIO_SDIO_STAT_EXPUB52 0x4000
#define TMIO_SDIO_STAT_EXWT 0x8000
@ -137,7 +141,7 @@ struct tmio_mmc_host {
bool force_pio;
struct dma_chan *chan_rx;
struct dma_chan *chan_tx;
struct tasklet_struct dma_complete;
struct completion dma_dataend;
struct tasklet_struct dma_issue;
struct scatterlist bounce_sg;
u8 *bounce_buf;

61
drivers/mmc/host/tmio_mmc_dma.c
View file

@ -43,6 +43,34 @@ void tmio_mmc_abort_dma(struct tmio_mmc_host *host)
tmio_mmc_enable_dma(host, true);
}
static void tmio_mmc_dma_callback(void *arg)
{
struct tmio_mmc_host *host = arg;
spin_lock_irq(&host->lock);
if (!host->data)
goto out;
if (host->data->flags & MMC_DATA_READ)
dma_unmap_sg(host->chan_rx->device->dev,
host->sg_ptr, host->sg_len,
DMA_FROM_DEVICE);
else
dma_unmap_sg(host->chan_tx->device->dev,
host->sg_ptr, host->sg_len,
DMA_TO_DEVICE);
spin_unlock_irq(&host->lock);
wait_for_completion(&host->dma_dataend);
spin_lock_irq(&host->lock);
tmio_mmc_do_data_irq(host);
out:
spin_unlock_irq(&host->lock);
}
static void tmio_mmc_start_dma_rx(struct tmio_mmc_host *host)
{
struct scatterlist *sg = host->sg_ptr, *sg_tmp;
@ -88,6 +116,10 @@ static void tmio_mmc_start_dma_rx(struct tmio_mmc_host *host)
DMA_DEV_TO_MEM, DMA_CTRL_ACK);
if (desc) {
reinit_completion(&host->dma_dataend);
desc->callback = tmio_mmc_dma_callback;
desc->callback_param = host;
cookie = dmaengine_submit(desc);
if (cookie < 0) {
desc = NULL;
@ -162,6 +194,10 @@ static void tmio_mmc_start_dma_tx(struct tmio_mmc_host *host)
DMA_MEM_TO_DEV, DMA_CTRL_ACK);
if (desc) {
reinit_completion(&host->dma_dataend);
desc->callback = tmio_mmc_dma_callback;
desc->callback_param = host;
cookie = dmaengine_submit(desc);
if (cookie < 0) {
desc = NULL;
@ -221,29 +257,6 @@ static void tmio_mmc_issue_tasklet_fn(unsigned long priv)
dma_async_issue_pending(chan);
}
static void tmio_mmc_tasklet_fn(unsigned long arg)
{
struct tmio_mmc_host *host = (struct tmio_mmc_host *)arg;
spin_lock_irq(&host->lock);
if (!host->data)
goto out;
if (host->data->flags & MMC_DATA_READ)
dma_unmap_sg(host->chan_rx->device->dev,
host->sg_ptr, host->sg_len,
DMA_FROM_DEVICE);
else
dma_unmap_sg(host->chan_tx->device->dev,
host->sg_ptr, host->sg_len,
DMA_TO_DEVICE);
tmio_mmc_do_data_irq(host);
out:
spin_unlock_irq(&host->lock);
}
void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdata)
{
/* We can only either use DMA for both Tx and Rx or not use it at all */
@ -306,7 +319,7 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
if (!host->bounce_buf)
goto ebouncebuf;
tasklet_init(&host->dma_complete, tmio_mmc_tasklet_fn, (unsigned long)host);
init_completion(&host->dma_dataend);
tasklet_init(&host->dma_issue, tmio_mmc_issue_tasklet_fn, (unsigned long)host);
}

36
drivers/mmc/host/tmio_mmc_pio.c
View file

@ -340,7 +340,7 @@ static int tmio_mmc_start_command(struct tmio_mmc_host *host, struct mmc_command
/* CMD12 is handled by hardware */
if (cmd->opcode == MMC_STOP_TRANSMISSION && !cmd->arg) {
sd_ctrl_write16(host, CTL_STOP_INTERNAL_ACTION, 0x001);
sd_ctrl_write16(host, CTL_STOP_INTERNAL_ACTION, TMIO_STOP_STP);
return 0;
}
@ -367,7 +367,7 @@ static int tmio_mmc_start_command(struct tmio_mmc_host *host, struct mmc_command
if (data) {
c |= DATA_PRESENT;
if (data->blocks > 1) {
sd_ctrl_write16(host, CTL_STOP_INTERNAL_ACTION, 0x100);
sd_ctrl_write16(host, CTL_STOP_INTERNAL_ACTION, TMIO_STOP_SEC);
c |= TRANSFER_MULTI;
/*
@ -553,10 +553,14 @@ void tmio_mmc_do_data_irq(struct tmio_mmc_host *host)
}
if (stop) {
if (stop->opcode == MMC_STOP_TRANSMISSION && !stop->arg)
sd_ctrl_write16(host, CTL_STOP_INTERNAL_ACTION, 0x000);
else
BUG();
if (stop->opcode != MMC_STOP_TRANSMISSION || stop->arg)
dev_err(&host->pdev->dev, "unsupported stop: CMD%u,0x%x. We did CMD12,0\n",
stop->opcode, stop->arg);
/* fill in response from auto CMD12 */
stop->resp[0] = sd_ctrl_read16_and_16_as_32(host, CTL_RESPONSE);
sd_ctrl_write16(host, CTL_STOP_INTERNAL_ACTION, 0);
}
schedule_work(&host->done);
@ -596,11 +600,11 @@ static void tmio_mmc_data_irq(struct tmio_mmc_host *host, unsigned int stat)
if (done) {
tmio_mmc_disable_mmc_irqs(host, TMIO_STAT_DATAEND);
tasklet_schedule(&host->dma_complete);
complete(&host->dma_dataend);
}
} else if (host->chan_rx && (data->flags & MMC_DATA_READ) && !host->force_pio) {
tmio_mmc_disable_mmc_irqs(host, TMIO_STAT_DATAEND);
tasklet_schedule(&host->dma_complete);
complete(&host->dma_dataend);
} else {
tmio_mmc_do_data_irq(host);
tmio_mmc_disable_mmc_irqs(host, TMIO_MASK_READOP | TMIO_MASK_WRITEOP);
@ -811,16 +815,14 @@ static int tmio_mmc_execute_tuning(struct mmc_host *mmc, u32 opcode)
struct tmio_mmc_host *host = mmc_priv(mmc);
int i, ret = 0;
if (!host->tap_num) {
if (!host->init_tuning || !host->select_tuning)
/* Tuning is not supported */
goto out;
if (!host->init_tuning || !host->select_tuning)
/* Tuning is not supported */
goto out;
host->tap_num = host->init_tuning(host);
if (!host->tap_num)
/* Tuning is not supported */
goto out;
}
host->tap_num = host->init_tuning(host);
if (!host->tap_num)
/* Tuning is not supported */
goto out;
if (host->tap_num * 2 >= sizeof(host->taps) * BITS_PER_BYTE) {
dev_warn_once(&host->pdev->dev,

10
include/linux/mmc/card.h
View file

@ -89,6 +89,7 @@ struct mmc_ext_csd {
unsigned int boot_ro_lock; /* ro lock support */
bool boot_ro_lockable;
bool ffu_capable; /* Firmware upgrade support */
bool cmdq_en; /* Command Queue enabled */
bool cmdq_support; /* Command Queue supported */
unsigned int cmdq_depth; /* Command Queue depth */
#define MMC_FIRMWARE_LEN 8
@ -208,6 +209,7 @@ struct sdio_cis {
struct mmc_host;
struct sdio_func;
struct sdio_func_tuple;
struct mmc_queue_req;
#define SDIO_MAX_FUNCS 7
@ -267,6 +269,8 @@ struct mmc_card {
#define MMC_QUIRK_TRIM_BROKEN (1<<12) /* Skip trim */
#define MMC_QUIRK_BROKEN_HPI (1<<13) /* Disable broken HPI support */
bool reenable_cmdq; /* Re-enable Command Queue */
unsigned int erase_size; /* erase size in sectors */
unsigned int erase_shift; /* if erase unit is power 2 */
unsigned int pref_erase; /* in sectors */
@ -300,6 +304,10 @@ struct mmc_card {
struct dentry *debugfs_root;
struct mmc_part part[MMC_NUM_PHY_PARTITION]; /* physical partitions */
unsigned int nr_parts;
struct mmc_queue_req *mqrq; /* Shared queue structure */
unsigned int bouncesz; /* Bounce buffer size */
int qdepth; /* Shared queue depth */
};
static inline bool mmc_large_sector(struct mmc_card *card)
@ -307,6 +315,8 @@ static inline bool mmc_large_sector(struct mmc_card *card)
return card->ext_csd.data_sector_size == 4096;
}
bool mmc_card_is_blockaddr(struct mmc_card *card);
#define mmc_card_mmc(c) ((c)->type == MMC_TYPE_MMC)
#define mmc_card_sd(c) ((c)->type == MMC_TYPE_SD)
#define mmc_card_sdio(c) ((c)->type == MMC_TYPE_SDIO)

6
include/linux/mmc/host.h
View file

@ -17,6 +17,7 @@
#include <linux/mmc/core.h>
#include <linux/mmc/card.h>
#include <linux/mmc/pm.h>
#include <linux/dma-direction.h>
struct mmc_ios {
unsigned int clock; /* clock rate */
@ -499,6 +500,11 @@ static inline bool mmc_can_retune(struct mmc_host *host)
return host->can_retune == 1;
}
static inline enum dma_data_direction mmc_get_dma_dir(struct mmc_data *data)
{
return data->flags & MMC_DATA_WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
}
int mmc_send_tuning(struct mmc_host *host, u32 opcode, int *cmd_error);
int mmc_abort_tuning(struct mmc_host *host, u32 opcode);