diff options
Diffstat (limited to 'kernel/drivers/mmc/host/atmel-mci-regs.h')
| -rw-r--r-- | kernel/drivers/mmc/host/atmel-mci-regs.h | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/kernel/drivers/mmc/host/atmel-mci-regs.h b/kernel/drivers/mmc/host/atmel-mci-regs.h new file mode 100644 index 000000000..0aa44e679 --- /dev/null +++ b/kernel/drivers/mmc/host/atmel-mci-regs.h @@ -0,0 +1,171 @@ +/* + * Atmel MultiMedia Card Interface driver + * + * Copyright (C) 2004-2006 Atmel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* + * Superset of MCI IP registers integrated in Atmel AVR32 and AT91 Processors + * Registers and bitfields marked with [2] are only available in MCI2 + */ + +#ifndef __DRIVERS_MMC_ATMEL_MCI_H__ +#define __DRIVERS_MMC_ATMEL_MCI_H__ + +/* MCI Register Definitions */ +#define ATMCI_CR 0x0000 /* Control */ +# define ATMCI_CR_MCIEN ( 1 << 0) /* MCI Enable */ +# define ATMCI_CR_MCIDIS ( 1 << 1) /* MCI Disable */ +# define ATMCI_CR_PWSEN ( 1 << 2) /* Power Save Enable */ +# define ATMCI_CR_PWSDIS ( 1 << 3) /* Power Save Disable */ +# define ATMCI_CR_SWRST ( 1 << 7) /* Software Reset */ +#define ATMCI_MR 0x0004 /* Mode */ +# define ATMCI_MR_CLKDIV(x) ((x) << 0) /* Clock Divider */ +# define ATMCI_MR_PWSDIV(x) ((x) << 8) /* Power Saving Divider */ +# define ATMCI_MR_RDPROOF ( 1 << 11) /* Read Proof */ +# define ATMCI_MR_WRPROOF ( 1 << 12) /* Write Proof */ +# define ATMCI_MR_PDCFBYTE ( 1 << 13) /* Force Byte Transfer */ +# define ATMCI_MR_PDCPADV ( 1 << 14) /* Padding Value */ +# define ATMCI_MR_PDCMODE ( 1 << 15) /* PDC-oriented Mode */ +# define ATMCI_MR_CLKODD(x) ((x) << 16) /* LSB of Clock Divider */ +#define ATMCI_DTOR 0x0008 /* Data Timeout */ +# define ATMCI_DTOCYC(x) ((x) << 0) /* Data Timeout Cycles */ +# define ATMCI_DTOMUL(x) ((x) << 4) /* Data Timeout Multiplier */ +#define ATMCI_SDCR 0x000c /* SD Card / SDIO */ +# define ATMCI_SDCSEL_SLOT_A ( 0 << 0) /* Select SD slot A */ +# define ATMCI_SDCSEL_SLOT_B ( 1 << 0) /* Select SD slot A */ +# define ATMCI_SDCSEL_MASK ( 3 << 0) +# define ATMCI_SDCBUS_1BIT ( 0 << 6) /* 1-bit data bus */ +# define ATMCI_SDCBUS_4BIT ( 2 << 6) /* 4-bit data bus */ +# define ATMCI_SDCBUS_8BIT ( 3 << 6) /* 8-bit data bus[2] */ +# define ATMCI_SDCBUS_MASK ( 3 << 6) +#define ATMCI_ARGR 0x0010 /* Command Argument */ +#define ATMCI_CMDR 0x0014 /* Command */ +# define ATMCI_CMDR_CMDNB(x) ((x) << 0) /* Command Opcode */ +# define ATMCI_CMDR_RSPTYP_NONE ( 0 << 6) /* No response */ +# define ATMCI_CMDR_RSPTYP_48BIT ( 1 << 6) /* 48-bit response */ +# define ATMCI_CMDR_RSPTYP_136BIT ( 2 << 6) /* 136-bit response */ +# define ATMCI_CMDR_SPCMD_INIT ( 1 << 8) /* Initialization command */ +# define ATMCI_CMDR_SPCMD_SYNC ( 2 << 8) /* Synchronized command */ +# define ATMCI_CMDR_SPCMD_INT ( 4 << 8) /* Interrupt command */ +# define ATMCI_CMDR_SPCMD_INTRESP ( 5 << 8) /* Interrupt response */ +# define ATMCI_CMDR_OPDCMD ( 1 << 11) /* Open Drain */ +# define ATMCI_CMDR_MAXLAT_5CYC ( 0 << 12) /* Max latency 5 cycles */ +# define ATMCI_CMDR_MAXLAT_64CYC ( 1 << 12) /* Max latency 64 cycles */ +# define ATMCI_CMDR_START_XFER ( 1 << 16) /* Start data transfer */ +# define ATMCI_CMDR_STOP_XFER ( 2 << 16) /* Stop data transfer */ +# define ATMCI_CMDR_TRDIR_WRITE ( 0 << 18) /* Write data */ +# define ATMCI_CMDR_TRDIR_READ ( 1 << 18) /* Read data */ +# define ATMCI_CMDR_BLOCK ( 0 << 19) /* Single-block transfer */ +# define ATMCI_CMDR_MULTI_BLOCK ( 1 << 19) /* Multi-block transfer */ +# define ATMCI_CMDR_STREAM ( 2 << 19) /* MMC Stream transfer */ +# define ATMCI_CMDR_SDIO_BYTE ( 4 << 19) /* SDIO Byte transfer */ +# define ATMCI_CMDR_SDIO_BLOCK ( 5 << 19) /* SDIO Block transfer */ +# define ATMCI_CMDR_SDIO_SUSPEND ( 1 << 24) /* SDIO Suspend Command */ +# define ATMCI_CMDR_SDIO_RESUME ( 2 << 24) /* SDIO Resume Command */ +#define ATMCI_BLKR 0x0018 /* Block */ +# define ATMCI_BCNT(x) ((x) << 0) /* Data Block Count */ +# define ATMCI_BLKLEN(x) ((x) << 16) /* Data Block Length */ +#define ATMCI_CSTOR 0x001c /* Completion Signal Timeout[2] */ +# define ATMCI_CSTOCYC(x) ((x) << 0) /* CST cycles */ +# define ATMCI_CSTOMUL(x) ((x) << 4) /* CST multiplier */ +#define ATMCI_RSPR 0x0020 /* Response 0 */ +#define ATMCI_RSPR1 0x0024 /* Response 1 */ +#define ATMCI_RSPR2 0x0028 /* Response 2 */ +#define ATMCI_RSPR3 0x002c /* Response 3 */ +#define ATMCI_RDR 0x0030 /* Receive Data */ +#define ATMCI_TDR 0x0034 /* Transmit Data */ +#define ATMCI_SR 0x0040 /* Status */ +#define ATMCI_IER 0x0044 /* Interrupt Enable */ +#define ATMCI_IDR 0x0048 /* Interrupt Disable */ +#define ATMCI_IMR 0x004c /* Interrupt Mask */ +# define ATMCI_CMDRDY ( 1 << 0) /* Command Ready */ +# define ATMCI_RXRDY ( 1 << 1) /* Receiver Ready */ +# define ATMCI_TXRDY ( 1 << 2) /* Transmitter Ready */ +# define ATMCI_BLKE ( 1 << 3) /* Data Block Ended */ +# define ATMCI_DTIP ( 1 << 4) /* Data Transfer In Progress */ +# define ATMCI_NOTBUSY ( 1 << 5) /* Data Not Busy */ +# define ATMCI_ENDRX ( 1 << 6) /* End of RX Buffer */ +# define ATMCI_ENDTX ( 1 << 7) /* End of TX Buffer */ +# define ATMCI_SDIOIRQA ( 1 << 8) /* SDIO IRQ in slot A */ +# define ATMCI_SDIOIRQB ( 1 << 9) /* SDIO IRQ in slot B */ +# define ATMCI_SDIOWAIT ( 1 << 12) /* SDIO Read Wait Operation Status */ +# define ATMCI_CSRCV ( 1 << 13) /* CE-ATA Completion Signal Received */ +# define ATMCI_RXBUFF ( 1 << 14) /* RX Buffer Full */ +# define ATMCI_TXBUFE ( 1 << 15) /* TX Buffer Empty */ +# define ATMCI_RINDE ( 1 << 16) /* Response Index Error */ +# define ATMCI_RDIRE ( 1 << 17) /* Response Direction Error */ +# define ATMCI_RCRCE ( 1 << 18) /* Response CRC Error */ +# define ATMCI_RENDE ( 1 << 19) /* Response End Bit Error */ +# define ATMCI_RTOE ( 1 << 20) /* Response Time-Out Error */ +# define ATMCI_DCRCE ( 1 << 21) /* Data CRC Error */ +# define ATMCI_DTOE ( 1 << 22) /* Data Time-Out Error */ +# define ATMCI_CSTOE ( 1 << 23) /* Completion Signal Time-out Error */ +# define ATMCI_BLKOVRE ( 1 << 24) /* DMA Block Overrun Error */ +# define ATMCI_DMADONE ( 1 << 25) /* DMA Transfer Done */ +# define ATMCI_FIFOEMPTY ( 1 << 26) /* FIFO Empty Flag */ +# define ATMCI_XFRDONE ( 1 << 27) /* Transfer Done Flag */ +# define ATMCI_ACKRCV ( 1 << 28) /* Boot Operation Acknowledge Received */ +# define ATMCI_ACKRCVE ( 1 << 29) /* Boot Operation Acknowledge Error */ +# define ATMCI_OVRE ( 1 << 30) /* RX Overrun Error */ +# define ATMCI_UNRE ( 1 << 31) /* TX Underrun Error */ +#define ATMCI_DMA 0x0050 /* DMA Configuration[2] */ +# define ATMCI_DMA_OFFSET(x) ((x) << 0) /* DMA Write Buffer Offset */ +# define ATMCI_DMA_CHKSIZE(x) ((x) << 4) /* DMA Channel Read and Write Chunk Size */ +# define ATMCI_DMAEN ( 1 << 8) /* DMA Hardware Handshaking Enable */ +#define ATMCI_CFG 0x0054 /* Configuration[2] */ +# define ATMCI_CFG_FIFOMODE_1DATA ( 1 << 0) /* MCI Internal FIFO control mode */ +# define ATMCI_CFG_FERRCTRL_COR ( 1 << 4) /* Flow Error flag reset control mode */ +# define ATMCI_CFG_HSMODE ( 1 << 8) /* High Speed Mode */ +# define ATMCI_CFG_LSYNC ( 1 << 12) /* Synchronize on the last block */ +#define ATMCI_WPMR 0x00e4 /* Write Protection Mode[2] */ +# define ATMCI_WP_EN ( 1 << 0) /* WP Enable */ +# define ATMCI_WP_KEY (0x4d4349 << 8) /* WP Key */ +#define ATMCI_WPSR 0x00e8 /* Write Protection Status[2] */ +# define ATMCI_GET_WP_VS(x) ((x) & 0x0f) +# define ATMCI_GET_WP_VSRC(x) (((x) >> 8) & 0xffff) +#define ATMCI_VERSION 0x00FC /* Version */ +#define ATMCI_FIFO_APERTURE 0x0200 /* FIFO Aperture[2] */ + +/* This is not including the FIFO Aperture on MCI2 */ +#define ATMCI_REGS_SIZE 0x100 + +/* Register access macros */ +#ifdef CONFIG_AVR32 +#define atmci_readl(port, reg) \ + __raw_readl((port)->regs + reg) +#define atmci_writel(port, reg, value) \ + __raw_writel((value), (port)->regs + reg) +#else +#define atmci_readl(port, reg) \ + readl_relaxed((port)->regs + reg) +#define atmci_writel(port, reg, value) \ + writel_relaxed((value), (port)->regs + reg) +#endif + +/* On AVR chips the Peripheral DMA Controller is not connected to MCI. */ +#ifdef CONFIG_AVR32 +# define ATMCI_PDC_CONNECTED 0 +#else +# define ATMCI_PDC_CONNECTED 1 +#endif + +/* + * Fix sconfig's burst size according to atmel MCI. We need to convert them as: + * 1 -> 0, 4 -> 1, 8 -> 2, 16 -> 3. + * + * This can be done by finding most significant bit set. + */ +static inline unsigned int atmci_convert_chksize(unsigned int maxburst) +{ + if (maxburst > 1) + return fls(maxburst) - 2; + else + return 0; +} + +#endif /* __DRIVERS_MMC_ATMEL_MCI_H__ */ |