2 * Atmel MultiMedia Card Interface driver
4 * Copyright (C) 2004-2006 Atmel Corporation
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
12 * Superset of MCI IP registers integrated in Atmel AVR32 and AT91 Processors
13 * Registers and bitfields marked with [2] are only available in MCI2
16 #ifndef __DRIVERS_MMC_ATMEL_MCI_H__
17 #define __DRIVERS_MMC_ATMEL_MCI_H__
19 /* MCI Register Definitions */
20 #define ATMCI_CR 0x0000 /* Control */
21 # define ATMCI_CR_MCIEN ( 1 << 0) /* MCI Enable */
22 # define ATMCI_CR_MCIDIS ( 1 << 1) /* MCI Disable */
23 # define ATMCI_CR_PWSEN ( 1 << 2) /* Power Save Enable */
24 # define ATMCI_CR_PWSDIS ( 1 << 3) /* Power Save Disable */
25 # define ATMCI_CR_SWRST ( 1 << 7) /* Software Reset */
26 #define ATMCI_MR 0x0004 /* Mode */
27 # define ATMCI_MR_CLKDIV(x) ((x) << 0) /* Clock Divider */
28 # define ATMCI_MR_PWSDIV(x) ((x) << 8) /* Power Saving Divider */
29 # define ATMCI_MR_RDPROOF ( 1 << 11) /* Read Proof */
30 # define ATMCI_MR_WRPROOF ( 1 << 12) /* Write Proof */
31 # define ATMCI_MR_PDCFBYTE ( 1 << 13) /* Force Byte Transfer */
32 # define ATMCI_MR_PDCPADV ( 1 << 14) /* Padding Value */
33 # define ATMCI_MR_PDCMODE ( 1 << 15) /* PDC-oriented Mode */
34 # define ATMCI_MR_CLKODD(x) ((x) << 16) /* LSB of Clock Divider */
35 #define ATMCI_DTOR 0x0008 /* Data Timeout */
36 # define ATMCI_DTOCYC(x) ((x) << 0) /* Data Timeout Cycles */
37 # define ATMCI_DTOMUL(x) ((x) << 4) /* Data Timeout Multiplier */
38 #define ATMCI_SDCR 0x000c /* SD Card / SDIO */
39 # define ATMCI_SDCSEL_SLOT_A ( 0 << 0) /* Select SD slot A */
40 # define ATMCI_SDCSEL_SLOT_B ( 1 << 0) /* Select SD slot A */
41 # define ATMCI_SDCSEL_MASK ( 3 << 0)
42 # define ATMCI_SDCBUS_1BIT ( 0 << 6) /* 1-bit data bus */
43 # define ATMCI_SDCBUS_4BIT ( 2 << 6) /* 4-bit data bus */
44 # define ATMCI_SDCBUS_8BIT ( 3 << 6) /* 8-bit data bus[2] */
45 # define ATMCI_SDCBUS_MASK ( 3 << 6)
46 #define ATMCI_ARGR 0x0010 /* Command Argument */
47 #define ATMCI_CMDR 0x0014 /* Command */
48 # define ATMCI_CMDR_CMDNB(x) ((x) << 0) /* Command Opcode */
49 # define ATMCI_CMDR_RSPTYP_NONE ( 0 << 6) /* No response */
50 # define ATMCI_CMDR_RSPTYP_48BIT ( 1 << 6) /* 48-bit response */
51 # define ATMCI_CMDR_RSPTYP_136BIT ( 2 << 6) /* 136-bit response */
52 # define ATMCI_CMDR_SPCMD_INIT ( 1 << 8) /* Initialization command */
53 # define ATMCI_CMDR_SPCMD_SYNC ( 2 << 8) /* Synchronized command */
54 # define ATMCI_CMDR_SPCMD_INT ( 4 << 8) /* Interrupt command */
55 # define ATMCI_CMDR_SPCMD_INTRESP ( 5 << 8) /* Interrupt response */
56 # define ATMCI_CMDR_OPDCMD ( 1 << 11) /* Open Drain */
57 # define ATMCI_CMDR_MAXLAT_5CYC ( 0 << 12) /* Max latency 5 cycles */
58 # define ATMCI_CMDR_MAXLAT_64CYC ( 1 << 12) /* Max latency 64 cycles */
59 # define ATMCI_CMDR_START_XFER ( 1 << 16) /* Start data transfer */
60 # define ATMCI_CMDR_STOP_XFER ( 2 << 16) /* Stop data transfer */
61 # define ATMCI_CMDR_TRDIR_WRITE ( 0 << 18) /* Write data */
62 # define ATMCI_CMDR_TRDIR_READ ( 1 << 18) /* Read data */
63 # define ATMCI_CMDR_BLOCK ( 0 << 19) /* Single-block transfer */
64 # define ATMCI_CMDR_MULTI_BLOCK ( 1 << 19) /* Multi-block transfer */
65 # define ATMCI_CMDR_STREAM ( 2 << 19) /* MMC Stream transfer */
66 # define ATMCI_CMDR_SDIO_BYTE ( 4 << 19) /* SDIO Byte transfer */
67 # define ATMCI_CMDR_SDIO_BLOCK ( 5 << 19) /* SDIO Block transfer */
68 # define ATMCI_CMDR_SDIO_SUSPEND ( 1 << 24) /* SDIO Suspend Command */
69 # define ATMCI_CMDR_SDIO_RESUME ( 2 << 24) /* SDIO Resume Command */
70 #define ATMCI_BLKR 0x0018 /* Block */
71 # define ATMCI_BCNT(x) ((x) << 0) /* Data Block Count */
72 # define ATMCI_BLKLEN(x) ((x) << 16) /* Data Block Length */
73 #define ATMCI_CSTOR 0x001c /* Completion Signal Timeout[2] */
74 # define ATMCI_CSTOCYC(x) ((x) << 0) /* CST cycles */
75 # define ATMCI_CSTOMUL(x) ((x) << 4) /* CST multiplier */
76 #define ATMCI_RSPR 0x0020 /* Response 0 */
77 #define ATMCI_RSPR1 0x0024 /* Response 1 */
78 #define ATMCI_RSPR2 0x0028 /* Response 2 */
79 #define ATMCI_RSPR3 0x002c /* Response 3 */
80 #define ATMCI_RDR 0x0030 /* Receive Data */
81 #define ATMCI_TDR 0x0034 /* Transmit Data */
82 #define ATMCI_SR 0x0040 /* Status */
83 #define ATMCI_IER 0x0044 /* Interrupt Enable */
84 #define ATMCI_IDR 0x0048 /* Interrupt Disable */
85 #define ATMCI_IMR 0x004c /* Interrupt Mask */
86 # define ATMCI_CMDRDY ( 1 << 0) /* Command Ready */
87 # define ATMCI_RXRDY ( 1 << 1) /* Receiver Ready */
88 # define ATMCI_TXRDY ( 1 << 2) /* Transmitter Ready */
89 # define ATMCI_BLKE ( 1 << 3) /* Data Block Ended */
90 # define ATMCI_DTIP ( 1 << 4) /* Data Transfer In Progress */
91 # define ATMCI_NOTBUSY ( 1 << 5) /* Data Not Busy */
92 # define ATMCI_ENDRX ( 1 << 6) /* End of RX Buffer */
93 # define ATMCI_ENDTX ( 1 << 7) /* End of TX Buffer */
94 # define ATMCI_SDIOIRQA ( 1 << 8) /* SDIO IRQ in slot A */
95 # define ATMCI_SDIOIRQB ( 1 << 9) /* SDIO IRQ in slot B */
96 # define ATMCI_SDIOWAIT ( 1 << 12) /* SDIO Read Wait Operation Status */
97 # define ATMCI_CSRCV ( 1 << 13) /* CE-ATA Completion Signal Received */
98 # define ATMCI_RXBUFF ( 1 << 14) /* RX Buffer Full */
99 # define ATMCI_TXBUFE ( 1 << 15) /* TX Buffer Empty */
100 # define ATMCI_RINDE ( 1 << 16) /* Response Index Error */
101 # define ATMCI_RDIRE ( 1 << 17) /* Response Direction Error */
102 # define ATMCI_RCRCE ( 1 << 18) /* Response CRC Error */
103 # define ATMCI_RENDE ( 1 << 19) /* Response End Bit Error */
104 # define ATMCI_RTOE ( 1 << 20) /* Response Time-Out Error */
105 # define ATMCI_DCRCE ( 1 << 21) /* Data CRC Error */
106 # define ATMCI_DTOE ( 1 << 22) /* Data Time-Out Error */
107 # define ATMCI_CSTOE ( 1 << 23) /* Completion Signal Time-out Error */
108 # define ATMCI_BLKOVRE ( 1 << 24) /* DMA Block Overrun Error */
109 # define ATMCI_DMADONE ( 1 << 25) /* DMA Transfer Done */
110 # define ATMCI_FIFOEMPTY ( 1 << 26) /* FIFO Empty Flag */
111 # define ATMCI_XFRDONE ( 1 << 27) /* Transfer Done Flag */
112 # define ATMCI_ACKRCV ( 1 << 28) /* Boot Operation Acknowledge Received */
113 # define ATMCI_ACKRCVE ( 1 << 29) /* Boot Operation Acknowledge Error */
114 # define ATMCI_OVRE ( 1 << 30) /* RX Overrun Error */
115 # define ATMCI_UNRE ( 1 << 31) /* TX Underrun Error */
116 #define ATMCI_DMA 0x0050 /* DMA Configuration[2] */
117 # define ATMCI_DMA_OFFSET(x) ((x) << 0) /* DMA Write Buffer Offset */
118 # define ATMCI_DMA_CHKSIZE(x) ((x) << 4) /* DMA Channel Read and Write Chunk Size */
119 # define ATMCI_DMAEN ( 1 << 8) /* DMA Hardware Handshaking Enable */
120 #define ATMCI_CFG 0x0054 /* Configuration[2] */
121 # define ATMCI_CFG_FIFOMODE_1DATA ( 1 << 0) /* MCI Internal FIFO control mode */
122 # define ATMCI_CFG_FERRCTRL_COR ( 1 << 4) /* Flow Error flag reset control mode */
123 # define ATMCI_CFG_HSMODE ( 1 << 8) /* High Speed Mode */
124 # define ATMCI_CFG_LSYNC ( 1 << 12) /* Synchronize on the last block */
125 #define ATMCI_WPMR 0x00e4 /* Write Protection Mode[2] */
126 # define ATMCI_WP_EN ( 1 << 0) /* WP Enable */
127 # define ATMCI_WP_KEY (0x4d4349 << 8) /* WP Key */
128 #define ATMCI_WPSR 0x00e8 /* Write Protection Status[2] */
129 # define ATMCI_GET_WP_VS(x) ((x) & 0x0f)
130 # define ATMCI_GET_WP_VSRC(x) (((x) >> 8) & 0xffff)
131 #define ATMCI_VERSION 0x00FC /* Version */
132 #define ATMCI_FIFO_APERTURE 0x0200 /* FIFO Aperture[2] */
134 /* This is not including the FIFO Aperture on MCI2 */
135 #define ATMCI_REGS_SIZE 0x100
137 /* Register access macros */
139 #define atmci_readl(port, reg) \
140 __raw_readl((port)->regs + reg)
141 #define atmci_writel(port, reg, value) \
142 __raw_writel((value), (port)->regs + reg)
144 #define atmci_readl(port, reg) \
145 readl_relaxed((port)->regs + reg)
146 #define atmci_writel(port, reg, value) \
147 writel_relaxed((value), (port)->regs + reg)
150 /* On AVR chips the Peripheral DMA Controller is not connected to MCI. */
152 # define ATMCI_PDC_CONNECTED 0
154 # define ATMCI_PDC_CONNECTED 1
158 * Fix sconfig's burst size according to atmel MCI. We need to convert them as:
159 * 1 -> 0, 4 -> 1, 8 -> 2, 16 -> 3.
161 * This can be done by finding most significant bit set.
163 static inline unsigned int atmci_convert_chksize(unsigned int maxburst
)
166 return fls(maxburst
) - 2;
171 #endif /* __DRIVERS_MMC_ATMEL_MCI_H__ */
