729 lines
31 KiB
C
729 lines
31 KiB
C
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/*
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* NetChip 2280 high/full speed USB device controller.
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* Unlike many such controllers, this one talks PCI.
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*/
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/*
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* Copyright (C) 2002 NetChip Technology, Inc. (http://www.netchip.com)
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* Copyright (C) 2003 David Brownell
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*-------------------------------------------------------------------------*/
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/* NET2280 MEMORY MAPPED REGISTERS
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*
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* The register layout came from the chip documentation, and the bit
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* number definitions were extracted from chip specification.
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*
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* Use the shift operator ('<<') to build bit masks, with readl/writel
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* to access the registers through PCI.
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*/
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/* main registers, BAR0 + 0x0000 */
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struct net2280_regs {
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// offset 0x0000
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u32 devinit;
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#define LOCAL_CLOCK_FREQUENCY 8
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#define FORCE_PCI_RESET 7
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#define PCI_ID 6
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#define PCI_ENABLE 5
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#define FIFO_SOFT_RESET 4
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#define CFG_SOFT_RESET 3
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#define PCI_SOFT_RESET 2
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#define USB_SOFT_RESET 1
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#define M8051_RESET 0
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u32 eectl;
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#define EEPROM_ADDRESS_WIDTH 23
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#define EEPROM_CHIP_SELECT_ACTIVE 22
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#define EEPROM_PRESENT 21
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#define EEPROM_VALID 20
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#define EEPROM_BUSY 19
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#define EEPROM_CHIP_SELECT_ENABLE 18
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#define EEPROM_BYTE_READ_START 17
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#define EEPROM_BYTE_WRITE_START 16
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#define EEPROM_READ_DATA 8
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#define EEPROM_WRITE_DATA 0
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u32 eeclkfreq;
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u32 _unused0;
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// offset 0x0010
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u32 pciirqenb0; /* interrupt PCI master ... */
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#define SETUP_PACKET_INTERRUPT_ENABLE 7
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#define ENDPOINT_F_INTERRUPT_ENABLE 6
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#define ENDPOINT_E_INTERRUPT_ENABLE 5
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#define ENDPOINT_D_INTERRUPT_ENABLE 4
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#define ENDPOINT_C_INTERRUPT_ENABLE 3
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#define ENDPOINT_B_INTERRUPT_ENABLE 2
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#define ENDPOINT_A_INTERRUPT_ENABLE 1
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#define ENDPOINT_0_INTERRUPT_ENABLE 0
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u32 pciirqenb1;
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#define PCI_INTERRUPT_ENABLE 31
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#define POWER_STATE_CHANGE_INTERRUPT_ENABLE 27
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#define PCI_ARBITER_TIMEOUT_INTERRUPT_ENABLE 26
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#define PCI_PARITY_ERROR_INTERRUPT_ENABLE 25
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#define PCI_MASTER_ABORT_RECEIVED_INTERRUPT_ENABLE 20
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#define PCI_TARGET_ABORT_RECEIVED_INTERRUPT_ENABLE 19
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#define PCI_TARGET_ABORT_ASSERTED_INTERRUPT_ENABLE 18
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#define PCI_RETRY_ABORT_INTERRUPT_ENABLE 17
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#define PCI_MASTER_CYCLE_DONE_INTERRUPT_ENABLE 16
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#define GPIO_INTERRUPT_ENABLE 13
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#define DMA_D_INTERRUPT_ENABLE 12
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#define DMA_C_INTERRUPT_ENABLE 11
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#define DMA_B_INTERRUPT_ENABLE 10
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#define DMA_A_INTERRUPT_ENABLE 9
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#define EEPROM_DONE_INTERRUPT_ENABLE 8
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#define VBUS_INTERRUPT_ENABLE 7
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#define CONTROL_STATUS_INTERRUPT_ENABLE 6
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#define ROOT_PORT_RESET_INTERRUPT_ENABLE 4
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#define SUSPEND_REQUEST_INTERRUPT_ENABLE 3
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#define SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE 2
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#define RESUME_INTERRUPT_ENABLE 1
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#define SOF_INTERRUPT_ENABLE 0
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u32 cpu_irqenb0; /* ... or onboard 8051 */
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#define SETUP_PACKET_INTERRUPT_ENABLE 7
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#define ENDPOINT_F_INTERRUPT_ENABLE 6
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#define ENDPOINT_E_INTERRUPT_ENABLE 5
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#define ENDPOINT_D_INTERRUPT_ENABLE 4
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#define ENDPOINT_C_INTERRUPT_ENABLE 3
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#define ENDPOINT_B_INTERRUPT_ENABLE 2
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#define ENDPOINT_A_INTERRUPT_ENABLE 1
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#define ENDPOINT_0_INTERRUPT_ENABLE 0
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u32 cpu_irqenb1;
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#define CPU_INTERRUPT_ENABLE 31
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#define POWER_STATE_CHANGE_INTERRUPT_ENABLE 27
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#define PCI_ARBITER_TIMEOUT_INTERRUPT_ENABLE 26
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#define PCI_PARITY_ERROR_INTERRUPT_ENABLE 25
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#define PCI_INTA_INTERRUPT_ENABLE 24
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#define PCI_PME_INTERRUPT_ENABLE 23
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#define PCI_SERR_INTERRUPT_ENABLE 22
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#define PCI_PERR_INTERRUPT_ENABLE 21
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#define PCI_MASTER_ABORT_RECEIVED_INTERRUPT_ENABLE 20
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#define PCI_TARGET_ABORT_RECEIVED_INTERRUPT_ENABLE 19
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#define PCI_RETRY_ABORT_INTERRUPT_ENABLE 17
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#define PCI_MASTER_CYCLE_DONE_INTERRUPT_ENABLE 16
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#define GPIO_INTERRUPT_ENABLE 13
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#define DMA_D_INTERRUPT_ENABLE 12
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#define DMA_C_INTERRUPT_ENABLE 11
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#define DMA_B_INTERRUPT_ENABLE 10
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#define DMA_A_INTERRUPT_ENABLE 9
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#define EEPROM_DONE_INTERRUPT_ENABLE 8
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#define VBUS_INTERRUPT_ENABLE 7
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#define CONTROL_STATUS_INTERRUPT_ENABLE 6
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#define ROOT_PORT_RESET_INTERRUPT_ENABLE 4
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#define SUSPEND_REQUEST_INTERRUPT_ENABLE 3
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#define SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE 2
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#define RESUME_INTERRUPT_ENABLE 1
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#define SOF_INTERRUPT_ENABLE 0
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// offset 0x0020
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u32 _unused1;
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u32 usbirqenb1;
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#define USB_INTERRUPT_ENABLE 31
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#define POWER_STATE_CHANGE_INTERRUPT_ENABLE 27
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#define PCI_ARBITER_TIMEOUT_INTERRUPT_ENABLE 26
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#define PCI_PARITY_ERROR_INTERRUPT_ENABLE 25
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#define PCI_INTA_INTERRUPT_ENABLE 24
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#define PCI_PME_INTERRUPT_ENABLE 23
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#define PCI_SERR_INTERRUPT_ENABLE 22
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#define PCI_PERR_INTERRUPT_ENABLE 21
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#define PCI_MASTER_ABORT_RECEIVED_INTERRUPT_ENABLE 20
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#define PCI_TARGET_ABORT_RECEIVED_INTERRUPT_ENABLE 19
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#define PCI_RETRY_ABORT_INTERRUPT_ENABLE 17
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#define PCI_MASTER_CYCLE_DONE_INTERRUPT_ENABLE 16
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#define GPIO_INTERRUPT_ENABLE 13
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#define DMA_D_INTERRUPT_ENABLE 12
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#define DMA_C_INTERRUPT_ENABLE 11
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#define DMA_B_INTERRUPT_ENABLE 10
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#define DMA_A_INTERRUPT_ENABLE 9
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#define EEPROM_DONE_INTERRUPT_ENABLE 8
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#define VBUS_INTERRUPT_ENABLE 7
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#define CONTROL_STATUS_INTERRUPT_ENABLE 6
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#define ROOT_PORT_RESET_INTERRUPT_ENABLE 4
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#define SUSPEND_REQUEST_INTERRUPT_ENABLE 3
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#define SUSPEND_REQUEST_CHANGE_INTERRUPT_ENABLE 2
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#define RESUME_INTERRUPT_ENABLE 1
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#define SOF_INTERRUPT_ENABLE 0
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u32 irqstat0;
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#define INTA_ASSERTED 12
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#define SETUP_PACKET_INTERRUPT 7
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#define ENDPOINT_F_INTERRUPT 6
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#define ENDPOINT_E_INTERRUPT 5
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#define ENDPOINT_D_INTERRUPT 4
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#define ENDPOINT_C_INTERRUPT 3
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#define ENDPOINT_B_INTERRUPT 2
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#define ENDPOINT_A_INTERRUPT 1
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#define ENDPOINT_0_INTERRUPT 0
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u32 irqstat1;
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#define POWER_STATE_CHANGE_INTERRUPT 27
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#define PCI_ARBITER_TIMEOUT_INTERRUPT 26
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#define PCI_PARITY_ERROR_INTERRUPT 25
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#define PCI_INTA_INTERRUPT 24
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#define PCI_PME_INTERRUPT 23
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#define PCI_SERR_INTERRUPT 22
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#define PCI_PERR_INTERRUPT 21
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#define PCI_MASTER_ABORT_RECEIVED_INTERRUPT 20
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#define PCI_TARGET_ABORT_RECEIVED_INTERRUPT 19
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#define PCI_RETRY_ABORT_INTERRUPT 17
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#define PCI_MASTER_CYCLE_DONE_INTERRUPT 16
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#define GPIO_INTERRUPT 13
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#define DMA_D_INTERRUPT 12
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#define DMA_C_INTERRUPT 11
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#define DMA_B_INTERRUPT 10
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#define DMA_A_INTERRUPT 9
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#define EEPROM_DONE_INTERRUPT 8
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#define VBUS_INTERRUPT 7
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#define CONTROL_STATUS_INTERRUPT 6
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#define ROOT_PORT_RESET_INTERRUPT 4
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#define SUSPEND_REQUEST_INTERRUPT 3
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#define SUSPEND_REQUEST_CHANGE_INTERRUPT 2
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#define RESUME_INTERRUPT 1
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#define SOF_INTERRUPT 0
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// offset 0x0030
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u32 idxaddr;
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u32 idxdata;
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u32 fifoctl;
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#define PCI_BASE2_RANGE 16
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#define IGNORE_FIFO_AVAILABILITY 3
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#define PCI_BASE2_SELECT 2
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#define FIFO_CONFIGURATION_SELECT 0
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u32 _unused2;
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// offset 0x0040
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u32 memaddr;
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#define START 28
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#define DIRECTION 27
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#define FIFO_DIAGNOSTIC_SELECT 24
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#define MEMORY_ADDRESS 0
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u32 memdata0;
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u32 memdata1;
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u32 _unused3;
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// offset 0x0050
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u32 gpioctl;
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#define GPIO3_LED_SELECT 12
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#define GPIO3_INTERRUPT_ENABLE 11
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#define GPIO2_INTERRUPT_ENABLE 10
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#define GPIO1_INTERRUPT_ENABLE 9
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#define GPIO0_INTERRUPT_ENABLE 8
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#define GPIO3_OUTPUT_ENABLE 7
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#define GPIO2_OUTPUT_ENABLE 6
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#define GPIO1_OUTPUT_ENABLE 5
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#define GPIO0_OUTPUT_ENABLE 4
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#define GPIO3_DATA 3
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#define GPIO2_DATA 2
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#define GPIO1_DATA 1
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#define GPIO0_DATA 0
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u32 gpiostat;
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#define GPIO3_INTERRUPT 3
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#define GPIO2_INTERRUPT 2
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#define GPIO1_INTERRUPT 1
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#define GPIO0_INTERRUPT 0
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} __attribute__ ((packed));
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/* usb control, BAR0 + 0x0080 */
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struct net2280_usb_regs {
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// offset 0x0080
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u32 stdrsp;
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#define STALL_UNSUPPORTED_REQUESTS 31
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#define SET_TEST_MODE 16
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#define GET_OTHER_SPEED_CONFIGURATION 15
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#define GET_DEVICE_QUALIFIER 14
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#define SET_ADDRESS 13
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#define ENDPOINT_SET_CLEAR_HALT 12
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#define DEVICE_SET_CLEAR_DEVICE_REMOTE_WAKEUP 11
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#define GET_STRING_DESCRIPTOR_2 10
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#define GET_STRING_DESCRIPTOR_1 9
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#define GET_STRING_DESCRIPTOR_0 8
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#define GET_SET_INTERFACE 6
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#define GET_SET_CONFIGURATION 5
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#define GET_CONFIGURATION_DESCRIPTOR 4
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#define GET_DEVICE_DESCRIPTOR 3
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#define GET_ENDPOINT_STATUS 2
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#define GET_INTERFACE_STATUS 1
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#define GET_DEVICE_STATUS 0
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u32 prodvendid;
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#define PRODUCT_ID 16
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#define VENDOR_ID 0
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u32 relnum;
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u32 usbctl;
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#define SERIAL_NUMBER_INDEX 16
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#define PRODUCT_ID_STRING_ENABLE 13
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#define VENDOR_ID_STRING_ENABLE 12
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#define USB_ROOT_PORT_WAKEUP_ENABLE 11
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#define VBUS_PIN 10
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#define TIMED_DISCONNECT 9
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#define SUSPEND_IMMEDIATELY 7
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#define SELF_POWERED_USB_DEVICE 6
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#define REMOTE_WAKEUP_SUPPORT 5
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#define PME_POLARITY 4
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#define USB_DETECT_ENABLE 3
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#define PME_WAKEUP_ENABLE 2
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#define DEVICE_REMOTE_WAKEUP_ENABLE 1
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#define SELF_POWERED_STATUS 0
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// offset 0x0090
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u32 usbstat;
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#define HIGH_SPEED 7
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#define FULL_SPEED 6
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#define GENERATE_RESUME 5
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#define GENERATE_DEVICE_REMOTE_WAKEUP 4
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u32 xcvrdiag;
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#define FORCE_HIGH_SPEED_MODE 31
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#define FORCE_FULL_SPEED_MODE 30
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#define USB_TEST_MODE 24
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#define LINE_STATE 16
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#define TRANSCEIVER_OPERATION_MODE 2
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#define TRANSCEIVER_SELECT 1
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#define TERMINATION_SELECT 0
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u32 setup0123;
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u32 setup4567;
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// offset 0x0090
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u32 _unused0;
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u32 ouraddr;
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#define FORCE_IMMEDIATE 7
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#define OUR_USB_ADDRESS 0
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u32 ourconfig;
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} __attribute__ ((packed));
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/* pci control, BAR0 + 0x0100 */
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struct net2280_pci_regs {
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// offset 0x0100
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u32 pcimstctl;
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#define PCI_ARBITER_PARK_SELECT 13
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#define PCI_MULTI LEVEL_ARBITER 12
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#define PCI_RETRY_ABORT_ENABLE 11
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#define DMA_MEMORY_WRITE_AND_INVALIDATE_ENABLE 10
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#define DMA_READ_MULTIPLE_ENABLE 9
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#define DMA_READ_LINE_ENABLE 8
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#define PCI_MASTER_COMMAND_SELECT 6
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#define MEM_READ_OR_WRITE 0
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#define IO_READ_OR_WRITE 1
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#define CFG_READ_OR_WRITE 2
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#define PCI_MASTER_START 5
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#define PCI_MASTER_READ_WRITE 4
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#define PCI_MASTER_WRITE 0
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#define PCI_MASTER_READ 1
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#define PCI_MASTER_BYTE_WRITE_ENABLES 0
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u32 pcimstaddr;
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u32 pcimstdata;
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u32 pcimststat;
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#define PCI_ARBITER_CLEAR 2
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#define PCI_EXTERNAL_ARBITER 1
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#define PCI_HOST_MODE 0
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} __attribute__ ((packed));
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/* dma control, BAR0 + 0x0180 ... array of four structs like this,
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* for channels 0..3. see also struct net2280_dma: descriptor
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* that can be loaded into some of these registers.
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*/
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struct net2280_dma_regs { /* [11.7] */
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// offset 0x0180, 0x01a0, 0x01c0, 0x01e0,
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u32 dmactl;
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#define DMA_SCATTER_GATHER_DONE_INTERRUPT_ENABLE 25
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#define DMA_CLEAR_COUNT_ENABLE 21
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#define DESCRIPTOR_POLLING_RATE 19
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#define POLL_CONTINUOUS 0
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#define POLL_1_USEC 1
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#define POLL_100_USEC 2
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#define POLL_1_MSEC 3
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#define DMA_VALID_BIT_POLLING_ENABLE 18
|
||
|
|
#define DMA_VALID_BIT_ENABLE 17
|
||
|
|
#define DMA_SCATTER_GATHER_ENABLE 16
|
||
|
|
#define DMA_OUT_AUTO_START_ENABLE 4
|
||
|
|
#define DMA_PREEMPT_ENABLE 3
|
||
|
|
#define DMA_FIFO_VALIDATE 2
|
||
|
|
#define DMA_ENABLE 1
|
||
|
|
#define DMA_ADDRESS_HOLD 0
|
||
|
|
u32 dmastat;
|
||
|
|
#define DMA_SCATTER_GATHER_DONE_INTERRUPT 25
|
||
|
|
#define DMA_TRANSACTION_DONE_INTERRUPT 24
|
||
|
|
#define DMA_ABORT 1
|
||
|
|
#define DMA_START 0
|
||
|
|
u32 _unused0 [2];
|
||
|
|
// offset 0x0190, 0x01b0, 0x01d0, 0x01f0,
|
||
|
|
u32 dmacount;
|
||
|
|
#define VALID_BIT 31
|
||
|
|
#define DMA_DIRECTION 30
|
||
|
|
#define DMA_DONE_INTERRUPT_ENABLE 29
|
||
|
|
#define END_OF_CHAIN 28
|
||
|
|
#define DMA_BYTE_COUNT_MASK ((1<<24)-1)
|
||
|
|
#define DMA_BYTE_COUNT 0
|
||
|
|
u32 dmaaddr;
|
||
|
|
u32 dmadesc;
|
||
|
|
u32 _unused1;
|
||
|
|
} __attribute__ ((packed));
|
||
|
|
|
||
|
|
/* dedicated endpoint registers, BAR0 + 0x0200 */
|
||
|
|
|
||
|
|
struct net2280_dep_regs { /* [11.8] */
|
||
|
|
// offset 0x0200, 0x0210, 0x220, 0x230, 0x240
|
||
|
|
u32 dep_cfg;
|
||
|
|
// offset 0x0204, 0x0214, 0x224, 0x234, 0x244
|
||
|
|
u32 dep_rsp;
|
||
|
|
u32 _unused [2];
|
||
|
|
} __attribute__ ((packed));
|
||
|
|
|
||
|
|
/* configurable endpoint registers, BAR0 + 0x0300 ... array of seven structs
|
||
|
|
* like this, for ep0 then the configurable endpoints A..F
|
||
|
|
* ep0 reserved for control; E and F have only 64 bytes of fifo
|
||
|
|
*/
|
||
|
|
struct net2280_ep_regs { /* [11.9] */
|
||
|
|
// offset 0x0300, 0x0320, 0x0340, 0x0360, 0x0380, 0x03a0, 0x03c0
|
||
|
|
u32 ep_cfg;
|
||
|
|
#define ENDPOINT_BYTE_COUNT 16
|
||
|
|
#define ENDPOINT_ENABLE 10
|
||
|
|
#define ENDPOINT_TYPE 8
|
||
|
|
#define ENDPOINT_DIRECTION 7
|
||
|
|
#define ENDPOINT_NUMBER 0
|
||
|
|
u32 ep_rsp;
|
||
|
|
#define SET_NAK_OUT_PACKETS 15
|
||
|
|
#define SET_EP_HIDE_STATUS_PHASE 14
|
||
|
|
#define SET_EP_FORCE_CRC_ERROR 13
|
||
|
|
#define SET_INTERRUPT_MODE 12
|
||
|
|
#define SET_CONTROL_STATUS_PHASE_HANDSHAKE 11
|
||
|
|
#define SET_NAK_OUT_PACKETS_MODE 10
|
||
|
|
#define SET_ENDPOINT_TOGGLE 9
|
||
|
|
#define SET_ENDPOINT_HALT 8
|
||
|
|
#define CLEAR_NAK_OUT_PACKETS 7
|
||
|
|
#define CLEAR_EP_HIDE_STATUS_PHASE 6
|
||
|
|
#define CLEAR_EP_FORCE_CRC_ERROR 5
|
||
|
|
#define CLEAR_INTERRUPT_MODE 4
|
||
|
|
#define CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE 3
|
||
|
|
#define CLEAR_NAK_OUT_PACKETS_MODE 2
|
||
|
|
#define CLEAR_ENDPOINT_TOGGLE 1
|
||
|
|
#define CLEAR_ENDPOINT_HALT 0
|
||
|
|
u32 ep_irqenb;
|
||
|
|
#define SHORT_PACKET_OUT_DONE_INTERRUPT_ENABLE 6
|
||
|
|
#define SHORT_PACKET_TRANSFERRED_INTERRUPT_ENABLE 5
|
||
|
|
#define DATA_PACKET_RECEIVED_INTERRUPT_ENABLE 3
|
||
|
|
#define DATA_PACKET_TRANSMITTED_INTERRUPT_ENABLE 2
|
||
|
|
#define DATA_OUT_PING_TOKEN_INTERRUPT_ENABLE 1
|
||
|
|
#define DATA_IN_TOKEN_INTERRUPT_ENABLE 0
|
||
|
|
u32 ep_stat;
|
||
|
|
#define FIFO_VALID_COUNT 24
|
||
|
|
#define HIGH_BANDWIDTH_OUT_TRANSACTION_PID 22
|
||
|
|
#define TIMEOUT 21
|
||
|
|
#define USB_STALL_SENT 20
|
||
|
|
#define USB_IN_NAK_SENT 19
|
||
|
|
#define USB_IN_ACK_RCVD 18
|
||
|
|
#define USB_OUT_PING_NAK_SENT 17
|
||
|
|
#define USB_OUT_ACK_SENT 16
|
||
|
|
#define FIFO_OVERFLOW 13
|
||
|
|
#define FIFO_UNDERFLOW 12
|
||
|
|
#define FIFO_FULL 11
|
||
|
|
#define FIFO_EMPTY 10
|
||
|
|
#define FIFO_FLUSH 9
|
||
|
|
#define SHORT_PACKET_OUT_DONE_INTERRUPT 6
|
||
|
|
#define SHORT_PACKET_TRANSFERRED_INTERRUPT 5
|
||
|
|
#define NAK_OUT_PACKETS 4
|
||
|
|
#define DATA_PACKET_RECEIVED_INTERRUPT 3
|
||
|
|
#define DATA_PACKET_TRANSMITTED_INTERRUPT 2
|
||
|
|
#define DATA_OUT_PING_TOKEN_INTERRUPT 1
|
||
|
|
#define DATA_IN_TOKEN_INTERRUPT 0
|
||
|
|
// offset 0x0310, 0x0330, 0x0350, 0x0370, 0x0390, 0x03b0, 0x03d0
|
||
|
|
u32 ep_avail;
|
||
|
|
u32 ep_data;
|
||
|
|
u32 _unused0 [2];
|
||
|
|
} __attribute__ ((packed));
|
||
|
|
|
||
|
|
/*-------------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
#ifdef __KERNEL__
|
||
|
|
|
||
|
|
/* indexed registers [11.10] are accessed indirectly
|
||
|
|
* caller must own the device lock.
|
||
|
|
*/
|
||
|
|
|
||
|
|
static inline u32
|
||
|
|
get_idx_reg (struct net2280_regs __iomem *regs, u32 index)
|
||
|
|
{
|
||
|
|
writel (index, ®s->idxaddr);
|
||
|
|
/* NOTE: synchs device/cpu memory views */
|
||
|
|
return readl (®s->idxdata);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
set_idx_reg (struct net2280_regs __iomem *regs, u32 index, u32 value)
|
||
|
|
{
|
||
|
|
writel (index, ®s->idxaddr);
|
||
|
|
writel (value, ®s->idxdata);
|
||
|
|
/* posted, may not be visible yet */
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* __KERNEL__ */
|
||
|
|
|
||
|
|
|
||
|
|
#define REG_DIAG 0x0
|
||
|
|
#define RETRY_COUNTER 16
|
||
|
|
#define FORCE_PCI_SERR 11
|
||
|
|
#define FORCE_PCI_INTERRUPT 10
|
||
|
|
#define FORCE_USB_INTERRUPT 9
|
||
|
|
#define FORCE_CPU_INTERRUPT 8
|
||
|
|
#define ILLEGAL_BYTE_ENABLES 5
|
||
|
|
#define FAST_TIMES 4
|
||
|
|
#define FORCE_RECEIVE_ERROR 2
|
||
|
|
#define FORCE_TRANSMIT_CRC_ERROR 0
|
||
|
|
#define REG_FRAME 0x02 /* from last sof */
|
||
|
|
#define REG_CHIPREV 0x03 /* in bcd */
|
||
|
|
#define REG_HS_NAK_RATE 0x0a /* NAK per N uframes */
|
||
|
|
|
||
|
|
#define CHIPREV_1 0x0100
|
||
|
|
#define CHIPREV_1A 0x0110
|
||
|
|
|
||
|
|
#ifdef __KERNEL__
|
||
|
|
|
||
|
|
/* ep a-f highspeed and fullspeed maxpacket, addresses
|
||
|
|
* computed from ep->num
|
||
|
|
*/
|
||
|
|
#define REG_EP_MAXPKT(dev,num) (((num) + 1) * 0x10 + \
|
||
|
|
(((dev)->gadget.speed == USB_SPEED_HIGH) ? 0 : 1))
|
||
|
|
|
||
|
|
/*-------------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
/* [8.3] for scatter/gather i/o
|
||
|
|
* use struct net2280_dma_regs bitfields
|
||
|
|
*/
|
||
|
|
struct net2280_dma {
|
||
|
|
__le32 dmacount;
|
||
|
|
__le32 dmaaddr; /* the buffer */
|
||
|
|
__le32 dmadesc; /* next dma descriptor */
|
||
|
|
__le32 _reserved;
|
||
|
|
} __attribute__ ((aligned (16)));
|
||
|
|
|
||
|
|
/*-------------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
/* DRIVER DATA STRUCTURES and UTILITIES */
|
||
|
|
|
||
|
|
struct net2280_ep {
|
||
|
|
struct usb_ep ep;
|
||
|
|
struct net2280_ep_regs __iomem *regs;
|
||
|
|
struct net2280_dma_regs __iomem *dma;
|
||
|
|
struct net2280_dma *dummy;
|
||
|
|
dma_addr_t td_dma; /* of dummy */
|
||
|
|
struct net2280 *dev;
|
||
|
|
unsigned long irqs;
|
||
|
|
|
||
|
|
/* analogous to a host-side qh */
|
||
|
|
struct list_head queue;
|
||
|
|
const struct usb_endpoint_descriptor *desc;
|
||
|
|
unsigned num : 8,
|
||
|
|
fifo_size : 12,
|
||
|
|
in_fifo_validate : 1,
|
||
|
|
out_overflow : 1,
|
||
|
|
stopped : 1,
|
||
|
|
is_in : 1,
|
||
|
|
is_iso : 1;
|
||
|
|
};
|
||
|
|
|
||
|
|
static inline void allow_status (struct net2280_ep *ep)
|
||
|
|
{
|
||
|
|
/* ep0 only */
|
||
|
|
writel ( (1 << CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE)
|
||
|
|
| (1 << CLEAR_NAK_OUT_PACKETS)
|
||
|
|
| (1 << CLEAR_NAK_OUT_PACKETS_MODE)
|
||
|
|
, &ep->regs->ep_rsp);
|
||
|
|
ep->stopped = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* count (<= 4) bytes in the next fifo write will be valid */
|
||
|
|
static inline void set_fifo_bytecount (struct net2280_ep *ep, unsigned count)
|
||
|
|
{
|
||
|
|
writeb (count, 2 + (u8 __iomem *) &ep->regs->ep_cfg);
|
||
|
|
}
|
||
|
|
|
||
|
|
struct net2280_request {
|
||
|
|
struct usb_request req;
|
||
|
|
struct net2280_dma *td;
|
||
|
|
dma_addr_t td_dma;
|
||
|
|
struct list_head queue;
|
||
|
|
unsigned mapped : 1,
|
||
|
|
valid : 1;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct net2280 {
|
||
|
|
/* each pci device provides one gadget, several endpoints */
|
||
|
|
struct usb_gadget gadget;
|
||
|
|
spinlock_t lock;
|
||
|
|
struct net2280_ep ep [7];
|
||
|
|
struct usb_gadget_driver *driver;
|
||
|
|
unsigned enabled : 1,
|
||
|
|
protocol_stall : 1,
|
||
|
|
softconnect : 1,
|
||
|
|
got_irq : 1,
|
||
|
|
region : 1;
|
||
|
|
u16 chiprev;
|
||
|
|
|
||
|
|
/* pci state used to access those endpoints */
|
||
|
|
struct pci_dev *pdev;
|
||
|
|
struct net2280_regs __iomem *regs;
|
||
|
|
struct net2280_usb_regs __iomem *usb;
|
||
|
|
struct net2280_pci_regs __iomem *pci;
|
||
|
|
struct net2280_dma_regs __iomem *dma;
|
||
|
|
struct net2280_dep_regs __iomem *dep;
|
||
|
|
struct net2280_ep_regs __iomem *epregs;
|
||
|
|
|
||
|
|
struct pci_pool *requests;
|
||
|
|
// statistics...
|
||
|
|
};
|
||
|
|
|
||
|
|
static inline void set_halt (struct net2280_ep *ep)
|
||
|
|
{
|
||
|
|
/* ep0 and bulk/intr endpoints */
|
||
|
|
writel ( (1 << CLEAR_CONTROL_STATUS_PHASE_HANDSHAKE)
|
||
|
|
/* set NAK_OUT for erratum 0114 */
|
||
|
|
| ((ep->dev->chiprev == CHIPREV_1) << SET_NAK_OUT_PACKETS)
|
||
|
|
| (1 << SET_ENDPOINT_HALT)
|
||
|
|
, &ep->regs->ep_rsp);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void clear_halt (struct net2280_ep *ep)
|
||
|
|
{
|
||
|
|
/* ep0 and bulk/intr endpoints */
|
||
|
|
writel ( (1 << CLEAR_ENDPOINT_HALT)
|
||
|
|
| (1 << CLEAR_ENDPOINT_TOGGLE)
|
||
|
|
/* unless the gadget driver left a short packet in the
|
||
|
|
* fifo, this reverses the erratum 0114 workaround.
|
||
|
|
*/
|
||
|
|
| ((ep->dev->chiprev == CHIPREV_1) << CLEAR_NAK_OUT_PACKETS)
|
||
|
|
, &ep->regs->ep_rsp);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef USE_RDK_LEDS
|
||
|
|
|
||
|
|
static inline void net2280_led_init (struct net2280 *dev)
|
||
|
|
{
|
||
|
|
/* LED3 (green) is on during USB activity. note erratum 0113. */
|
||
|
|
writel ((1 << GPIO3_LED_SELECT)
|
||
|
|
| (1 << GPIO3_OUTPUT_ENABLE)
|
||
|
|
| (1 << GPIO2_OUTPUT_ENABLE)
|
||
|
|
| (1 << GPIO1_OUTPUT_ENABLE)
|
||
|
|
| (1 << GPIO0_OUTPUT_ENABLE)
|
||
|
|
, &dev->regs->gpioctl);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* indicate speed with bi-color LED 0/1 */
|
||
|
|
static inline
|
||
|
|
void net2280_led_speed (struct net2280 *dev, enum usb_device_speed speed)
|
||
|
|
{
|
||
|
|
u32 val = readl (&dev->regs->gpioctl);
|
||
|
|
switch (speed) {
|
||
|
|
case USB_SPEED_HIGH: /* green */
|
||
|
|
val &= ~(1 << GPIO0_DATA);
|
||
|
|
val |= (1 << GPIO1_DATA);
|
||
|
|
break;
|
||
|
|
case USB_SPEED_FULL: /* red */
|
||
|
|
val &= ~(1 << GPIO1_DATA);
|
||
|
|
val |= (1 << GPIO0_DATA);
|
||
|
|
break;
|
||
|
|
default: /* (off/black) */
|
||
|
|
val &= ~((1 << GPIO1_DATA) | (1 << GPIO0_DATA));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
writel (val, &dev->regs->gpioctl);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* indicate power with LED 2 */
|
||
|
|
static inline void net2280_led_active (struct net2280 *dev, int is_active)
|
||
|
|
{
|
||
|
|
u32 val = readl (&dev->regs->gpioctl);
|
||
|
|
|
||
|
|
// FIXME this LED never seems to turn on.
|
||
|
|
if (is_active)
|
||
|
|
val |= GPIO2_DATA;
|
||
|
|
else
|
||
|
|
val &= ~GPIO2_DATA;
|
||
|
|
writel (val, &dev->regs->gpioctl);
|
||
|
|
}
|
||
|
|
static inline void net2280_led_shutdown (struct net2280 *dev)
|
||
|
|
{
|
||
|
|
/* turn off all four GPIO*_DATA bits */
|
||
|
|
writel (readl (&dev->regs->gpioctl) & ~0x0f,
|
||
|
|
&dev->regs->gpioctl);
|
||
|
|
}
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
#define net2280_led_init(dev) do { } while (0)
|
||
|
|
#define net2280_led_speed(dev, speed) do { } while (0)
|
||
|
|
#define net2280_led_shutdown(dev) do { } while (0)
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*-------------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
#define xprintk(dev,level,fmt,args...) \
|
||
|
|
printk(level "%s %s: " fmt , driver_name , \
|
||
|
|
pci_name(dev->pdev) , ## args)
|
||
|
|
|
||
|
|
#ifdef DEBUG
|
||
|
|
#undef DEBUG
|
||
|
|
#define DEBUG(dev,fmt,args...) \
|
||
|
|
xprintk(dev , KERN_DEBUG , fmt , ## args)
|
||
|
|
#else
|
||
|
|
#define DEBUG(dev,fmt,args...) \
|
||
|
|
do { } while (0)
|
||
|
|
#endif /* DEBUG */
|
||
|
|
|
||
|
|
#ifdef VERBOSE
|
||
|
|
#define VDEBUG DEBUG
|
||
|
|
#else
|
||
|
|
#define VDEBUG(dev,fmt,args...) \
|
||
|
|
do { } while (0)
|
||
|
|
#endif /* VERBOSE */
|
||
|
|
|
||
|
|
#define ERROR(dev,fmt,args...) \
|
||
|
|
xprintk(dev , KERN_ERR , fmt , ## args)
|
||
|
|
#define WARN(dev,fmt,args...) \
|
||
|
|
xprintk(dev , KERN_WARNING , fmt , ## args)
|
||
|
|
#define INFO(dev,fmt,args...) \
|
||
|
|
xprintk(dev , KERN_INFO , fmt , ## args)
|
||
|
|
|
||
|
|
/*-------------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
static inline void start_out_naking (struct net2280_ep *ep)
|
||
|
|
{
|
||
|
|
/* NOTE: hardware races lurk here, and PING protocol issues */
|
||
|
|
writel ((1 << SET_NAK_OUT_PACKETS), &ep->regs->ep_rsp);
|
||
|
|
/* synch with device */
|
||
|
|
readl (&ep->regs->ep_rsp);
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef DEBUG
|
||
|
|
static inline void assert_out_naking (struct net2280_ep *ep, const char *where)
|
||
|
|
{
|
||
|
|
u32 tmp = readl (&ep->regs->ep_stat);
|
||
|
|
|
||
|
|
if ((tmp & (1 << NAK_OUT_PACKETS)) == 0) {
|
||
|
|
DEBUG (ep->dev, "%s %s %08x !NAK\n",
|
||
|
|
ep->ep.name, where, tmp);
|
||
|
|
writel ((1 << SET_NAK_OUT_PACKETS),
|
||
|
|
&ep->regs->ep_rsp);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#define ASSERT_OUT_NAKING(ep) assert_out_naking(ep,__FUNCTION__)
|
||
|
|
#else
|
||
|
|
#define ASSERT_OUT_NAKING(ep) do {} while (0)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static inline void stop_out_naking (struct net2280_ep *ep)
|
||
|
|
{
|
||
|
|
u32 tmp;
|
||
|
|
|
||
|
|
tmp = readl (&ep->regs->ep_stat);
|
||
|
|
if ((tmp & (1 << NAK_OUT_PACKETS)) != 0)
|
||
|
|
writel ((1 << CLEAR_NAK_OUT_PACKETS), &ep->regs->ep_rsp);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* __KERNEL__ */
|