796211b795
Add pdc support for atmel-mci. It makes at91-mci driver useless because it was only used for the old atmel MCI core which has pdc but no dma support. To allow removing at91-mci, the capabilities of the MCI core are detected at runtime -- then the driver will use pio, pdc or dma transfers. Warning: at91rm9200 is not supported, to support it we need to use swab32 on data but I have no board to test it. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Chris Ball <cjb@laptop.org>
142 lines
7.5 KiB
C
142 lines
7.5 KiB
C
/*
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* Atmel MultiMedia Card Interface driver
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*
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* Copyright (C) 2004-2006 Atmel Corporation
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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/*
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* Superset of MCI IP registers integrated in Atmel AVR32 and AT91 Processors
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* Registers and bitfields marked with [2] are only available in MCI2
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*/
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#ifndef __DRIVERS_MMC_ATMEL_MCI_H__
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#define __DRIVERS_MMC_ATMEL_MCI_H__
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/* MCI Register Definitions */
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#define ATMCI_CR 0x0000 /* Control */
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# define ATMCI_CR_MCIEN ( 1 << 0) /* MCI Enable */
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# define ATMCI_CR_MCIDIS ( 1 << 1) /* MCI Disable */
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# define ATMCI_CR_PWSEN ( 1 << 2) /* Power Save Enable */
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# define ATMCI_CR_PWSDIS ( 1 << 3) /* Power Save Disable */
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# define ATMCI_CR_SWRST ( 1 << 7) /* Software Reset */
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#define ATMCI_MR 0x0004 /* Mode */
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# define ATMCI_MR_CLKDIV(x) ((x) << 0) /* Clock Divider */
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# define ATMCI_MR_PWSDIV(x) ((x) << 8) /* Power Saving Divider */
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# define ATMCI_MR_RDPROOF ( 1 << 11) /* Read Proof */
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# define ATMCI_MR_WRPROOF ( 1 << 12) /* Write Proof */
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# define ATMCI_MR_PDCFBYTE ( 1 << 13) /* Force Byte Transfer */
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# define ATMCI_MR_PDCPADV ( 1 << 14) /* Padding Value */
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# define ATMCI_MR_PDCMODE ( 1 << 15) /* PDC-oriented Mode */
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#define ATMCI_DTOR 0x0008 /* Data Timeout */
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# define ATMCI_DTOCYC(x) ((x) << 0) /* Data Timeout Cycles */
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# define ATMCI_DTOMUL(x) ((x) << 4) /* Data Timeout Multiplier */
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#define ATMCI_SDCR 0x000c /* SD Card / SDIO */
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# define ATMCI_SDCSEL_SLOT_A ( 0 << 0) /* Select SD slot A */
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# define ATMCI_SDCSEL_SLOT_B ( 1 << 0) /* Select SD slot A */
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# define ATMCI_SDCSEL_MASK ( 3 << 0)
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# define ATMCI_SDCBUS_1BIT ( 0 << 6) /* 1-bit data bus */
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# define ATMCI_SDCBUS_4BIT ( 2 << 6) /* 4-bit data bus */
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# define ATMCI_SDCBUS_8BIT ( 3 << 6) /* 8-bit data bus[2] */
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# define ATMCI_SDCBUS_MASK ( 3 << 6)
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#define ATMCI_ARGR 0x0010 /* Command Argument */
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#define ATMCI_CMDR 0x0014 /* Command */
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# define ATMCI_CMDR_CMDNB(x) ((x) << 0) /* Command Opcode */
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# define ATMCI_CMDR_RSPTYP_NONE ( 0 << 6) /* No response */
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# define ATMCI_CMDR_RSPTYP_48BIT ( 1 << 6) /* 48-bit response */
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# define ATMCI_CMDR_RSPTYP_136BIT ( 2 << 6) /* 136-bit response */
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# define ATMCI_CMDR_SPCMD_INIT ( 1 << 8) /* Initialization command */
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# define ATMCI_CMDR_SPCMD_SYNC ( 2 << 8) /* Synchronized command */
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# define ATMCI_CMDR_SPCMD_INT ( 4 << 8) /* Interrupt command */
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# define ATMCI_CMDR_SPCMD_INTRESP ( 5 << 8) /* Interrupt response */
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# define ATMCI_CMDR_OPDCMD ( 1 << 11) /* Open Drain */
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# define ATMCI_CMDR_MAXLAT_5CYC ( 0 << 12) /* Max latency 5 cycles */
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# define ATMCI_CMDR_MAXLAT_64CYC ( 1 << 12) /* Max latency 64 cycles */
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# define ATMCI_CMDR_START_XFER ( 1 << 16) /* Start data transfer */
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# define ATMCI_CMDR_STOP_XFER ( 2 << 16) /* Stop data transfer */
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# define ATMCI_CMDR_TRDIR_WRITE ( 0 << 18) /* Write data */
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# define ATMCI_CMDR_TRDIR_READ ( 1 << 18) /* Read data */
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# define ATMCI_CMDR_BLOCK ( 0 << 19) /* Single-block transfer */
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# define ATMCI_CMDR_MULTI_BLOCK ( 1 << 19) /* Multi-block transfer */
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# define ATMCI_CMDR_STREAM ( 2 << 19) /* MMC Stream transfer */
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# define ATMCI_CMDR_SDIO_BYTE ( 4 << 19) /* SDIO Byte transfer */
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# define ATMCI_CMDR_SDIO_BLOCK ( 5 << 19) /* SDIO Block transfer */
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# define ATMCI_CMDR_SDIO_SUSPEND ( 1 << 24) /* SDIO Suspend Command */
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# define ATMCI_CMDR_SDIO_RESUME ( 2 << 24) /* SDIO Resume Command */
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#define ATMCI_BLKR 0x0018 /* Block */
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# define ATMCI_BCNT(x) ((x) << 0) /* Data Block Count */
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# define ATMCI_BLKLEN(x) ((x) << 16) /* Data Block Length */
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#define ATMCI_CSTOR 0x001c /* Completion Signal Timeout[2] */
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# define ATMCI_CSTOCYC(x) ((x) << 0) /* CST cycles */
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# define ATMCI_CSTOMUL(x) ((x) << 4) /* CST multiplier */
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#define ATMCI_RSPR 0x0020 /* Response 0 */
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#define ATMCI_RSPR1 0x0024 /* Response 1 */
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#define ATMCI_RSPR2 0x0028 /* Response 2 */
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#define ATMCI_RSPR3 0x002c /* Response 3 */
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#define ATMCI_RDR 0x0030 /* Receive Data */
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#define ATMCI_TDR 0x0034 /* Transmit Data */
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#define ATMCI_SR 0x0040 /* Status */
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#define ATMCI_IER 0x0044 /* Interrupt Enable */
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#define ATMCI_IDR 0x0048 /* Interrupt Disable */
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#define ATMCI_IMR 0x004c /* Interrupt Mask */
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# define ATMCI_CMDRDY ( 1 << 0) /* Command Ready */
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# define ATMCI_RXRDY ( 1 << 1) /* Receiver Ready */
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# define ATMCI_TXRDY ( 1 << 2) /* Transmitter Ready */
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# define ATMCI_BLKE ( 1 << 3) /* Data Block Ended */
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# define ATMCI_DTIP ( 1 << 4) /* Data Transfer In Progress */
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# define ATMCI_NOTBUSY ( 1 << 5) /* Data Not Busy */
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# define ATMCI_ENDRX ( 1 << 6) /* End of RX Buffer */
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# define ATMCI_ENDTX ( 1 << 7) /* End of TX Buffer */
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# define ATMCI_SDIOIRQA ( 1 << 8) /* SDIO IRQ in slot A */
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# define ATMCI_SDIOIRQB ( 1 << 9) /* SDIO IRQ in slot B */
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# define ATMCI_SDIOWAIT ( 1 << 12) /* SDIO Read Wait Operation Status */
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# define ATMCI_CSRCV ( 1 << 13) /* CE-ATA Completion Signal Received */
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# define ATMCI_RXBUFF ( 1 << 14) /* RX Buffer Full */
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# define ATMCI_TXBUFE ( 1 << 15) /* TX Buffer Empty */
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# define ATMCI_RINDE ( 1 << 16) /* Response Index Error */
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# define ATMCI_RDIRE ( 1 << 17) /* Response Direction Error */
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# define ATMCI_RCRCE ( 1 << 18) /* Response CRC Error */
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# define ATMCI_RENDE ( 1 << 19) /* Response End Bit Error */
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# define ATMCI_RTOE ( 1 << 20) /* Response Time-Out Error */
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# define ATMCI_DCRCE ( 1 << 21) /* Data CRC Error */
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# define ATMCI_DTOE ( 1 << 22) /* Data Time-Out Error */
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# define ATMCI_CSTOE ( 1 << 23) /* Completion Signal Time-out Error */
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# define ATMCI_BLKOVRE ( 1 << 24) /* DMA Block Overrun Error */
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# define ATMCI_DMADONE ( 1 << 25) /* DMA Transfer Done */
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# define ATMCI_FIFOEMPTY ( 1 << 26) /* FIFO Empty Flag */
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# define ATMCI_XFRDONE ( 1 << 27) /* Transfer Done Flag */
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# define ATMCI_ACKRCV ( 1 << 28) /* Boot Operation Acknowledge Received */
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# define ATMCI_ACKRCVE ( 1 << 29) /* Boot Operation Acknowledge Error */
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# define ATMCI_OVRE ( 1 << 30) /* RX Overrun Error */
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# define ATMCI_UNRE ( 1 << 31) /* TX Underrun Error */
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#define ATMCI_DMA 0x0050 /* DMA Configuration[2] */
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# define ATMCI_DMA_OFFSET(x) ((x) << 0) /* DMA Write Buffer Offset */
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# define ATMCI_DMA_CHKSIZE(x) ((x) << 4) /* DMA Channel Read and Write Chunk Size */
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# define ATMCI_DMAEN ( 1 << 8) /* DMA Hardware Handshaking Enable */
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#define ATMCI_CFG 0x0054 /* Configuration[2] */
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# define ATMCI_CFG_FIFOMODE_1DATA ( 1 << 0) /* MCI Internal FIFO control mode */
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# define ATMCI_CFG_FERRCTRL_COR ( 1 << 4) /* Flow Error flag reset control mode */
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# define ATMCI_CFG_HSMODE ( 1 << 8) /* High Speed Mode */
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# define ATMCI_CFG_LSYNC ( 1 << 12) /* Synchronize on the last block */
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#define ATMCI_WPMR 0x00e4 /* Write Protection Mode[2] */
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# define ATMCI_WP_EN ( 1 << 0) /* WP Enable */
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# define ATMCI_WP_KEY (0x4d4349 << 8) /* WP Key */
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#define ATMCI_WPSR 0x00e8 /* Write Protection Status[2] */
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# define ATMCI_GET_WP_VS(x) ((x) & 0x0f)
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# define ATMCI_GET_WP_VSRC(x) (((x) >> 8) & 0xffff)
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#define ATMCI_VERSION 0x00FC /* Version */
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#define ATMCI_FIFO_APERTURE 0x0200 /* FIFO Aperture[2] */
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/* This is not including the FIFO Aperture on MCI2 */
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#define ATMCI_REGS_SIZE 0x100
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/* Register access macros */
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#define atmci_readl(port,reg) \
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__raw_readl((port)->regs + reg)
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#define atmci_writel(port,reg,value) \
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__raw_writel((value), (port)->regs + reg)
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#endif /* __DRIVERS_MMC_ATMEL_MCI_H__ */
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