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u-boot/include/asm-arm/arch-omap3/mmc.h
Dirk Behme 9de0212bd7 OMAP3 MMC: Fix warning dereferencing type-punned pointer 
Fix warning
Dereferencing type-punned pointer will break strict-aliasing rules

Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
CC: Steve Sakoman <sakoman@gmail.com>
Acked-by: Tom Rix <Tom.Rix@windriver.com>
2009-10-13 06:17:36 -05:00

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/*
* (C) Copyright 2008
* Texas Instruments, <www.ti.com>
* Syed Mohammed Khasim <khasim@ti.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation's version 2 of
* the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef MMC_H
#define MMC_H
#include "mmc_host_def.h"
/* Responses */
#define RSP_TYPE_NONE (RSP_TYPE_NORSP | CCCE_NOCHECK | CICE_NOCHECK)
#define RSP_TYPE_R1 (RSP_TYPE_LGHT48 | CCCE_CHECK | CICE_CHECK)
#define RSP_TYPE_R1B (RSP_TYPE_LGHT48B | CCCE_CHECK | CICE_CHECK)
#define RSP_TYPE_R2 (RSP_TYPE_LGHT136 | CCCE_CHECK | CICE_NOCHECK)
#define RSP_TYPE_R3 (RSP_TYPE_LGHT48 | CCCE_NOCHECK | CICE_NOCHECK)
#define RSP_TYPE_R4 (RSP_TYPE_LGHT48 | CCCE_NOCHECK | CICE_NOCHECK)
#define RSP_TYPE_R5 (RSP_TYPE_LGHT48 | CCCE_CHECK | CICE_CHECK)
#define RSP_TYPE_R6 (RSP_TYPE_LGHT48 | CCCE_CHECK | CICE_CHECK)
#define RSP_TYPE_R7 (RSP_TYPE_LGHT48 | CCCE_CHECK | CICE_CHECK)
/* All supported commands */
#define MMC_CMD0 (INDEX(0) | RSP_TYPE_NONE | DP_NO_DATA | DDIR_WRITE)
#define MMC_CMD1 (INDEX(1) | RSP_TYPE_R3 | DP_NO_DATA | DDIR_WRITE)
#define MMC_CMD2 (INDEX(2) | RSP_TYPE_R2 | DP_NO_DATA | DDIR_WRITE)
#define MMC_CMD3 (INDEX(3) | RSP_TYPE_R1 | DP_NO_DATA | DDIR_WRITE)
#define MMC_SDCMD3 (INDEX(3) | RSP_TYPE_R6 | DP_NO_DATA | DDIR_WRITE)
#define MMC_CMD4 (INDEX(4) | RSP_TYPE_NONE | DP_NO_DATA | DDIR_WRITE)
#define MMC_CMD6 (INDEX(6) | RSP_TYPE_R1B | DP_NO_DATA | DDIR_WRITE)
#define MMC_CMD7_SELECT (INDEX(7) | RSP_TYPE_R1B | DP_NO_DATA | DDIR_WRITE)
#define MMC_CMD7_DESELECT (INDEX(7)| RSP_TYPE_NONE | DP_NO_DATA | DDIR_WRITE)
#define MMC_CMD8 (INDEX(8) | RSP_TYPE_R1 | DP_DATA | DDIR_READ)
#define MMC_SDCMD8 (INDEX(8) | RSP_TYPE_R7 | DP_NO_DATA | DDIR_WRITE)
#define MMC_CMD9 (INDEX(9) | RSP_TYPE_R2 | DP_NO_DATA | DDIR_WRITE)
#define MMC_CMD12 (INDEX(12) | RSP_TYPE_R1B | DP_NO_DATA | DDIR_WRITE)
#define MMC_CMD13 (INDEX(13) | RSP_TYPE_R1 | DP_NO_DATA | DDIR_WRITE)
#define MMC_CMD15 (INDEX(15) | RSP_TYPE_NONE | DP_NO_DATA | DDIR_WRITE)
#define MMC_CMD16 (INDEX(16) | RSP_TYPE_R1 | DP_NO_DATA | DDIR_WRITE)
#define MMC_CMD17 (INDEX(17) | RSP_TYPE_R1 | DP_DATA | DDIR_READ)
#define MMC_CMD24 (INDEX(24) | RSP_TYPE_R1 | DP_DATA | DDIR_WRITE)
#define MMC_ACMD6 (INDEX(6) | RSP_TYPE_R1 | DP_NO_DATA | DDIR_WRITE)
#define MMC_ACMD41 (INDEX(41) | RSP_TYPE_R3 | DP_NO_DATA | DDIR_WRITE)
#define MMC_ACMD51 (INDEX(51) | RSP_TYPE_R1 | DP_DATA | DDIR_READ)
#define MMC_CMD55 (INDEX(55) | RSP_TYPE_R1 | DP_NO_DATA | DDIR_WRITE)
#define MMC_AC_CMD_RCA_MASK (unsigned int)(0xFFFF << 16)
#define MMC_BC_CMD_DSR_MASK (unsigned int)(0xFFFF << 16)
#define MMC_DSR_DEFAULT 0x0404
#define SD_CMD8_CHECK_PATTERN 0xAA
#define SD_CMD8_2_7_3_6_V_RANGE (0x01 << 8)
/* Clock Configurations and Macros */
#define MMC_CLOCK_REFERENCE 96
#define MMC_RELATIVE_CARD_ADDRESS 0x1234
#define MMC_INIT_SEQ_CLK (MMC_CLOCK_REFERENCE * 1000 / 80)
#define MMC_400kHz_CLK (MMC_CLOCK_REFERENCE * 1000 / 400)
#define CLKDR(r, f, u) ((((r)*100) / ((f)*(u))) + 1)
#define CLKD(f, u) (CLKDR(MMC_CLOCK_REFERENCE, f, u))
#define MMC_OCR_REG_ACCESS_MODE_MASK (0x3 << 29)
#define MMC_OCR_REG_ACCESS_MODE_BYTE (0x0 << 29)
#define MMC_OCR_REG_ACCESS_MODE_SECTOR (0x2 << 29)
#define MMC_OCR_REG_HOST_CAPACITY_SUPPORT_MASK (0x1 << 30)
#define MMC_OCR_REG_HOST_CAPACITY_SUPPORT_BYTE (0x0 << 30)
#define MMC_OCR_REG_HOST_CAPACITY_SUPPORT_SECTOR (0x1 << 30)
#define MMC_SD2_CSD_C_SIZE_LSB_MASK 0xFFFF
#define MMC_SD2_CSD_C_SIZE_MSB_MASK 0x003F
#define MMC_SD2_CSD_C_SIZE_MSB_OFFSET 16
#define MMC_CSD_C_SIZE_LSB_MASK 0x0003
#define MMC_CSD_C_SIZE_MSB_MASK 0x03FF
#define MMC_CSD_C_SIZE_MSB_OFFSET 2
#define MMC_CSD_TRAN_SPEED_UNIT_MASK (0x07 << 0)
#define MMC_CSD_TRAN_SPEED_FACTOR_MASK (0x0F << 3)
#define MMC_CSD_TRAN_SPEED_UNIT_100MHZ (0x3 << 0)
#define MMC_CSD_TRAN_SPEED_FACTOR_1_0 (0x01 << 3)
#define MMC_CSD_TRAN_SPEED_FACTOR_8_0 (0x0F << 3)
typedef struct {
unsigned not_used:1;
unsigned crc:7;
unsigned ecc:2;
unsigned file_format:2;
unsigned tmp_write_protect:1;
unsigned perm_write_protect:1;
unsigned copy:1;
unsigned file_format_grp:1;
unsigned content_prot_app:1;
unsigned reserved_1:4;
unsigned write_bl_partial:1;
unsigned write_bl_len:4;
unsigned r2w_factor:3;
unsigned default_ecc:2;
unsigned wp_grp_enable:1;
unsigned wp_grp_size:5;
unsigned erase_grp_mult:5;
unsigned erase_grp_size:5;
unsigned c_size_mult:3;
unsigned vdd_w_curr_max:3;
unsigned vdd_w_curr_min:3;
unsigned vdd_r_curr_max:3;
unsigned vdd_r_curr_min:3;
unsigned c_size_lsb:2;
unsigned c_size_msb:10;
unsigned reserved_2:2;
unsigned dsr_imp:1;
unsigned read_blk_misalign:1;
unsigned write_blk_misalign:1;
unsigned read_bl_partial:1;
unsigned read_bl_len:4;
unsigned ccc:12;
unsigned tran_speed:8;
unsigned nsac:8;
unsigned taac:8;
unsigned reserved_3:2;
unsigned spec_vers:4;
unsigned csd_structure:2;
} mmc_csd_reg_t;
/* csd for sd2.0 */
typedef struct {
unsigned not_used:1;
unsigned crc:7;
unsigned reserved_1:2;
unsigned file_format:2;
unsigned tmp_write_protect:1;
unsigned perm_write_protect:1;
unsigned copy:1;
unsigned file_format_grp:1;
unsigned reserved_2:5;
unsigned write_bl_partial:1;
unsigned write_bl_len:4;
unsigned r2w_factor:3;
unsigned reserved_3:2;
unsigned wp_grp_enable:1;
unsigned wp_grp_size:7;
unsigned sector_size:7;
unsigned erase_blk_len:1;
unsigned reserved_4:1;
unsigned c_size_lsb:16;
unsigned c_size_msb:6;
unsigned reserved_5:6;
unsigned dsr_imp:1;
unsigned read_blk_misalign:1;
unsigned write_blk_misalign:1;
unsigned read_bl_partial:1;
unsigned read_bl_len:4;
unsigned ccc:12;
unsigned tran_speed:8;
unsigned nsac:8;
unsigned taac:8;
unsigned reserved_6:6;
unsigned csd_structure:2;
} mmc_sd2_csd_reg_t;
/* extended csd - 512 bytes long */
typedef struct {
unsigned char reserved_1[181];
unsigned char erasedmemorycontent;
unsigned char reserved_2;
unsigned char buswidthmode;
unsigned char reserved_3;
unsigned char highspeedinterfacetiming;
unsigned char reserved_4;
unsigned char powerclass;
unsigned char reserved_5;
unsigned char commandsetrevision;
unsigned char reserved_6;
unsigned char commandset;
unsigned char extendedcsdrevision;
unsigned char reserved_7;
unsigned char csdstructureversion;
unsigned char reserved_8;
unsigned char cardtype;
unsigned char reserved_9[3];
unsigned char powerclass_52mhz_1_95v;
unsigned char powerclass_26mhz_1_95v;
unsigned char powerclass_52mhz_3_6v;
unsigned char powerclass_26mhz_3_6v;
unsigned char reserved_10;
unsigned char minreadperf_4b_26mhz;
unsigned char minwriteperf_4b_26mhz;
unsigned char minreadperf_8b_26mhz_4b_52mhz;
unsigned char minwriteperf_8b_26mhz_4b_52mhz;
unsigned char minreadperf_8b_52mhz;
unsigned char minwriteperf_8b_52mhz;
unsigned char reserved_11;
unsigned int sectorcount;
unsigned char reserved_12[288];
unsigned char supportedcommandsets;
unsigned char reserved_13[7];
} mmc_extended_csd_reg_t;
/* mmc sd responce */
typedef struct {
unsigned int ocr;
} mmc_resp_r3;
typedef struct {
unsigned short cardstatus;
unsigned short newpublishedrca;
} mmc_resp_r6;
typedef union {
unsigned int resp[4];
mmc_resp_r3 r3;
mmc_resp_r6 r6;
mmc_csd_reg_t Card_CSD;
} mmc_resp_t;
extern mmc_card_data mmc_dev;
unsigned char mmc_lowlevel_init(void);
unsigned char mmc_send_command(unsigned int cmd, unsigned int arg,
unsigned int *response);
unsigned char mmc_setup_clock(unsigned int iclk, unsigned short clkd);
unsigned char mmc_set_opendrain(unsigned char state);
unsigned char mmc_read_data(unsigned int *output_buf);
#endif /* MMC_H */
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