mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
0b453ffe28
The mmc code defines the response as an array of chars. However, it access the response bytes both as (i) an array of four uints (with casts) and (ii) as individual chars. The former case is used more often, including by the driver when it assigns the response. The char-wise accesses are broken on little endian systems because they assume that the bytes in the uints are in big endian byte order. This patch fixes this by changing the response to be an array of four uints and replacing the char-wise accesses with equivalent uint-wise accesses. Signed-off-by: Rabin Vincent <rabin@rab.in>
280 lines
7.7 KiB
C
280 lines
7.7 KiB
C
/*
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* Copyright 2008, Freescale Semiconductor, Inc
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* Andy Fleming
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*
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* Based (loosely) on the Linux code
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (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,
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* MA 02111-1307 USA
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*/
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#ifndef _MMC_H_
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#define _MMC_H_
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#include <linux/list.h>
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#define SD_VERSION_SD 0x20000
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#define SD_VERSION_2 (SD_VERSION_SD | 0x20)
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#define SD_VERSION_1_0 (SD_VERSION_SD | 0x10)
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#define SD_VERSION_1_10 (SD_VERSION_SD | 0x1a)
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#define MMC_VERSION_MMC 0x10000
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#define MMC_VERSION_UNKNOWN (MMC_VERSION_MMC)
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#define MMC_VERSION_1_2 (MMC_VERSION_MMC | 0x12)
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#define MMC_VERSION_1_4 (MMC_VERSION_MMC | 0x14)
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#define MMC_VERSION_2_2 (MMC_VERSION_MMC | 0x22)
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#define MMC_VERSION_3 (MMC_VERSION_MMC | 0x30)
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#define MMC_VERSION_4 (MMC_VERSION_MMC | 0x40)
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#define MMC_MODE_HS 0x001
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#define MMC_MODE_HS_52MHz 0x010
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#define MMC_MODE_4BIT 0x100
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#define MMC_MODE_8BIT 0x200
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#define SD_DATA_4BIT 0x00040000
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#define IS_SD(x) (mmc->version & SD_VERSION_SD)
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#define MMC_DATA_READ 1
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#define MMC_DATA_WRITE 2
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#define NO_CARD_ERR -16 /* No SD/MMC card inserted */
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#define UNUSABLE_ERR -17 /* Unusable Card */
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#define COMM_ERR -18 /* Communications Error */
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#define TIMEOUT -19
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#define MMC_CMD_GO_IDLE_STATE 0
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#define MMC_CMD_SEND_OP_COND 1
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#define MMC_CMD_ALL_SEND_CID 2
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#define MMC_CMD_SET_RELATIVE_ADDR 3
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#define MMC_CMD_SET_DSR 4
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#define MMC_CMD_SWITCH 6
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#define MMC_CMD_SELECT_CARD 7
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#define MMC_CMD_SEND_EXT_CSD 8
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#define MMC_CMD_SEND_CSD 9
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#define MMC_CMD_SEND_CID 10
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#define MMC_CMD_STOP_TRANSMISSION 12
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#define MMC_CMD_SEND_STATUS 13
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#define MMC_CMD_SET_BLOCKLEN 16
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#define MMC_CMD_READ_SINGLE_BLOCK 17
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#define MMC_CMD_READ_MULTIPLE_BLOCK 18
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#define MMC_CMD_WRITE_SINGLE_BLOCK 24
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#define MMC_CMD_WRITE_MULTIPLE_BLOCK 25
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#define MMC_CMD_APP_CMD 55
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#define SD_CMD_SEND_RELATIVE_ADDR 3
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#define SD_CMD_SWITCH_FUNC 6
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#define SD_CMD_SEND_IF_COND 8
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#define SD_CMD_APP_SET_BUS_WIDTH 6
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#define SD_CMD_APP_SEND_OP_COND 41
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#define SD_CMD_APP_SEND_SCR 51
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/* SCR definitions in different words */
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#define SD_HIGHSPEED_BUSY 0x00020000
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#define SD_HIGHSPEED_SUPPORTED 0x00020000
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#define MMC_HS_TIMING 0x00000100
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#define MMC_HS_52MHZ 0x2
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#define OCR_BUSY 0x80000000
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#define OCR_HCS 0x40000000
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#define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */
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#define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
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#define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */
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#define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */
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#define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */
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#define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */
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#define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */
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#define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */
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#define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */
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#define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */
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#define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */
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#define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */
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#define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */
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#define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */
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#define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
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#define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
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#define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
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#define MMC_SWITCH_MODE_CMD_SET 0x00 /* Change the command set */
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#define MMC_SWITCH_MODE_SET_BITS 0x01 /* Set bits in EXT_CSD byte
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addressed by index which are
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1 in value field */
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#define MMC_SWITCH_MODE_CLEAR_BITS 0x02 /* Clear bits in EXT_CSD byte
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addressed by index, which are
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1 in value field */
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#define MMC_SWITCH_MODE_WRITE_BYTE 0x03 /* Set target byte to value */
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#define SD_SWITCH_CHECK 0
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#define SD_SWITCH_SWITCH 1
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/*
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* EXT_CSD fields
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*/
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#define EXT_CSD_BUS_WIDTH 183 /* R/W */
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#define EXT_CSD_HS_TIMING 185 /* R/W */
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#define EXT_CSD_CARD_TYPE 196 /* RO */
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#define EXT_CSD_REV 192 /* RO */
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#define EXT_CSD_SEC_CNT 212 /* RO, 4 bytes */
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/*
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* EXT_CSD field definitions
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*/
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#define EXT_CSD_CMD_SET_NORMAL (1<<0)
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#define EXT_CSD_CMD_SET_SECURE (1<<1)
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#define EXT_CSD_CMD_SET_CPSECURE (1<<2)
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#define EXT_CSD_CARD_TYPE_26 (1<<0) /* Card can run at 26MHz */
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#define EXT_CSD_CARD_TYPE_52 (1<<1) /* Card can run at 52MHz */
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#define EXT_CSD_BUS_WIDTH_1 0 /* Card is in 1 bit mode */
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#define EXT_CSD_BUS_WIDTH_4 1 /* Card is in 4 bit mode */
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#define EXT_CSD_BUS_WIDTH_8 2 /* Card is in 8 bit mode */
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#define R1_ILLEGAL_COMMAND (1 << 22)
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#define R1_APP_CMD (1 << 5)
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#define MMC_RSP_PRESENT (1 << 0)
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#define MMC_RSP_136 (1 << 1) /* 136 bit response */
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#define MMC_RSP_CRC (1 << 2) /* expect valid crc */
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#define MMC_RSP_BUSY (1 << 3) /* card may send busy */
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#define MMC_RSP_OPCODE (1 << 4) /* response contains opcode */
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#define MMC_RSP_NONE (0)
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#define MMC_RSP_R1 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
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#define MMC_RSP_R1b (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE| \
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MMC_RSP_BUSY)
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#define MMC_RSP_R2 (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)
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#define MMC_RSP_R3 (MMC_RSP_PRESENT)
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#define MMC_RSP_R4 (MMC_RSP_PRESENT)
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#define MMC_RSP_R5 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
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#define MMC_RSP_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
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#define MMC_RSP_R7 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
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struct mmc_cid {
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unsigned long psn;
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unsigned short oid;
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unsigned char mid;
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unsigned char prv;
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unsigned char mdt;
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char pnm[7];
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};
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struct mmc_csd
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{
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u8 csd_structure:2,
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spec_vers:4,
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rsvd1:2;
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u8 taac;
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u8 nsac;
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u8 tran_speed;
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u16 ccc:12,
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read_bl_len:4;
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u64 read_bl_partial:1,
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write_blk_misalign:1,
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read_blk_misalign:1,
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dsr_imp:1,
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rsvd2:2,
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c_size:12,
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vdd_r_curr_min:3,
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vdd_r_curr_max:3,
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vdd_w_curr_min:3,
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vdd_w_curr_max:3,
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c_size_mult:3,
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sector_size:5,
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erase_grp_size:5,
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wp_grp_size:5,
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wp_grp_enable:1,
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default_ecc:2,
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r2w_factor:3,
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write_bl_len:4,
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write_bl_partial:1,
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rsvd3:5;
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u8 file_format_grp:1,
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copy:1,
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perm_write_protect:1,
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tmp_write_protect:1,
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file_format:2,
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ecc:2;
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u8 crc:7;
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u8 one:1;
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};
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struct mmc_cmd {
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ushort cmdidx;
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uint resp_type;
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uint cmdarg;
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uint response[4];
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uint flags;
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};
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struct mmc_data {
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union {
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char *dest;
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const char *src; /* src buffers don't get written to */
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};
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uint flags;
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uint blocks;
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uint blocksize;
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};
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struct mmc {
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struct list_head link;
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char name[32];
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void *priv;
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uint voltages;
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uint version;
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uint f_min;
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uint f_max;
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int high_capacity;
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uint bus_width;
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uint clock;
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uint card_caps;
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uint host_caps;
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uint ocr;
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uint scr[2];
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uint csd[4];
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uint cid[4];
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ushort rca;
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uint tran_speed;
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uint read_bl_len;
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uint write_bl_len;
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u64 capacity;
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block_dev_desc_t block_dev;
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int (*send_cmd)(struct mmc *mmc,
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struct mmc_cmd *cmd, struct mmc_data *data);
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void (*set_ios)(struct mmc *mmc);
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int (*init)(struct mmc *mmc);
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};
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int mmc_register(struct mmc *mmc);
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int mmc_initialize(bd_t *bis);
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int mmc_init(struct mmc *mmc);
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int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size);
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struct mmc *find_mmc_device(int dev_num);
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void print_mmc_devices(char separator);
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#ifndef CONFIG_GENERIC_MMC
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int mmc_legacy_init(int verbose);
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#endif
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#endif /* _MMC_H_ */
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