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Merge branch 'master' of git://git.denx.de/u-boot-mmc

Browse Source 
* 'master' of git://git.denx.de/u-boot-mmc:
  mmc: rescan fails on empty slot
  AT91:mmc:fix multiple read/write error
  mmc: Access mode validation for eMMC cards > 2 GiB
  mmc: sh_mmcif: add support for Renesas MMCIF
  mmc: fix the condition for MMC version 4
  MMC: add marvell sdhci driver
  MMC: add sdhci generic framework
  MMC: add erase function to both mmc and sd
  MMC: unify mmc read and write operation
  mmc: Tegra2: Enable SD/MMC driver for Seaboard and Harmony
  mmc: Tegra2: SD/MMC driver for Seaboard - eMMC on SDMMC4, SDIO on SDMMC3
This commit is contained in:
Wolfgang Denk 2011-07-19 22:27:07 +02:00
commit 74fac70084
22 changed files with 2608 additions and 43 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
README
View File

@ -1064,6 +1064,15 @@ The following options need to be configured:
enabled with CONFIG_CMD_MMC. The MMC driver also works with
the FAT fs. This is enabled with CONFIG_CMD_FAT.
CONFIG_SH_MMCIF
Support for Renesas on-chip MMCIF controller
CONFIG_SH_MMCIF_ADDR
Define the base address of MMCIF registers
CONFIG_SH_MMCIF_CLK
Define the clock frequency for MMCIF
- Journaling Flash filesystem support:
CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE,
CONFIG_JFFS2_NAND_DEV

5
arch/arm/include/asm/arch-tegra2/clk_rst.h
View File

@ -191,4 +191,9 @@ struct clk_rst_ctlr {
#define CPCON (1 << 8)
#define SWR_SDMMC4_RST (1 << 15)
#define CLK_ENB_SDMMC4 (1 << 15)
#define SWR_SDMMC3_RST (1 << 5)
#define CLK_ENB_SDMMC3 (1 << 5)
#endif /* CLK_RST_H */

6
arch/arm/include/asm/arch-tegra2/pinmux.h
View File

@ -51,5 +51,11 @@ struct pmux_tri_ctlr {
#define Z_GMC (1 << 29)
#define Z_IRRX (1 << 20)
#define Z_IRTX (1 << 19)
#define Z_GMA (1 << 28)
#define Z_GME (1 << 0)
#define Z_ATB (1 << 1)
#define Z_SDB (1 << 15)
#define Z_SDC (1 << 1)
#define Z_SDD (1 << 2)
#endif /* PINMUX_H */

147
board/nvidia/common/board.c
View File

@ -32,6 +32,10 @@
#include <asm/arch/uart.h>
#include "board.h"
#ifdef CONFIG_TEGRA2_MMC
#include <mmc.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
const struct tegra2_sysinfo sysinfo = {
@ -170,6 +174,116 @@ static void pin_mux_uart(void)
#endif /* CONFIG_TEGRA2_ENABLE_UARTD */
}
/*
* Routine: clock_init_mmc
* Description: init the PLL and clocks for the SDMMC controllers
*/
static void clock_init_mmc(void)
{
struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
u32 reg;
/* Do the SDMMC resets/clock enables */
/* Assert Reset to SDMMC4 */
reg = readl(&clkrst->crc_rst_dev_l);
reg |= SWR_SDMMC4_RST; /* SWR_SDMMC4_RST = 1 */
writel(reg, &clkrst->crc_rst_dev_l);
/* Enable clk to SDMMC4 */
reg = readl(&clkrst->crc_clk_out_enb_l);
reg |= CLK_ENB_SDMMC4; /* CLK_ENB_SDMMC4 = 1 */
writel(reg, &clkrst->crc_clk_out_enb_l);
/* Enable pllp_out0 to SDMMC4 */
reg = readl(&clkrst->crc_clk_src_sdmmc4);
reg &= 0x3FFFFF00; /* SDMMC4_CLK_SRC = 00, PLLP_OUT0 */
reg |= (10 << 1); /* n-1, 11-1 shl 1 */
writel(reg, &clkrst->crc_clk_src_sdmmc4);
/*
* As per the Tegra2 TRM, section 5.3.4:
* 'Wait 2 us for the clock to flush through the pipe/logic'
*/
udelay(2);
/* De-assert reset to SDMMC4 */
reg = readl(&clkrst->crc_rst_dev_l);
reg &= ~SWR_SDMMC4_RST; /* SWR_SDMMC4_RST = 0 */
writel(reg, &clkrst->crc_rst_dev_l);
/* Assert Reset to SDMMC3 */
reg = readl(&clkrst->crc_rst_dev_u);
reg |= SWR_SDMMC3_RST; /* SWR_SDMMC3_RST = 1 */
writel(reg, &clkrst->crc_rst_dev_u);
/* Enable clk to SDMMC3 */
reg = readl(&clkrst->crc_clk_out_enb_u);
reg |= CLK_ENB_SDMMC3; /* CLK_ENB_SDMMC3 = 1 */
writel(reg, &clkrst->crc_clk_out_enb_u);
/* Enable pllp_out0 to SDMMC4, set divisor to 11 for 20MHz */
reg = readl(&clkrst->crc_clk_src_sdmmc3);
reg &= 0x3FFFFF00; /* SDMMC3_CLK_SRC = 00, PLLP_OUT0 */
reg |= (10 << 1); /* n-1, 11-1 shl 1 */
writel(reg, &clkrst->crc_clk_src_sdmmc3);
/* wait for 2us */
udelay(2);
/* De-assert reset to SDMMC3 */
reg = readl(&clkrst->crc_rst_dev_u);
reg &= ~SWR_SDMMC3_RST; /* SWR_SDMMC3_RST = 0 */
writel(reg, &clkrst->crc_rst_dev_u);
}
/*
* Routine: pin_mux_mmc
* Description: setup the pin muxes/tristate values for the SDMMC(s)
*/
static void pin_mux_mmc(void)
{
struct pmux_tri_ctlr *pmt = (struct pmux_tri_ctlr *)NV_PA_APB_MISC_BASE;
u32 reg;
/* SDMMC4 */
/* config 2, x8 on 2nd set of pins */
reg = readl(&pmt->pmt_ctl_a);
reg |= (3 << 16); /* ATB_SEL [17:16] = 11 SDIO4 */
writel(reg, &pmt->pmt_ctl_a);
reg = readl(&pmt->pmt_ctl_b);
reg |= (3 << 0); /* GMA_SEL [1:0] = 11 SDIO4 */
writel(reg, &pmt->pmt_ctl_b);
reg = readl(&pmt->pmt_ctl_d);
reg |= (3 << 0); /* GME_SEL [1:0] = 11 SDIO4 */
writel(reg, &pmt->pmt_ctl_d);
reg = readl(&pmt->pmt_tri_a);
reg &= ~Z_ATB; /* Z_ATB = normal (0) */
reg &= ~Z_GMA; /* Z_GMA = normal (0) */
writel(reg, &pmt->pmt_tri_a);
reg = readl(&pmt->pmt_tri_b);
reg &= ~Z_GME; /* Z_GME = normal (0) */
writel(reg, &pmt->pmt_tri_b);
/* SDMMC3 */
/* SDIO3_CLK, SDIO3_CMD, SDIO3_DAT[3:0] */
reg = readl(&pmt->pmt_ctl_d);
reg &= 0xFFFF03FF;
reg |= (2 << 10); /* SDB_SEL [11:10] = 01 SDIO3 */
reg |= (2 << 12); /* SDC_SEL [13:12] = 01 SDIO3 */
reg |= (2 << 14); /* SDD_SEL [15:14] = 01 SDIO3 */
writel(reg, &pmt->pmt_ctl_d);
reg = readl(&pmt->pmt_tri_b);
reg &= ~Z_SDC; /* Z_SDC = normal (0) */
reg &= ~Z_SDD; /* Z_SDD = normal (0) */
writel(reg, &pmt->pmt_tri_b);
reg = readl(&pmt->pmt_tri_d);
reg &= ~Z_SDB; /* Z_SDB = normal (0) */
writel(reg, &pmt->pmt_tri_d);
}
/*
* Routine: clock_init
* Description: Do individual peripheral clock reset/enables
@ -210,3 +324,36 @@ int board_init(void)
return 0;
}
#ifdef CONFIG_TEGRA2_MMC
/* this is a weak define that we are overriding */
int board_mmc_init(bd_t *bd)
{
debug("board_mmc_init called\n");
/* Enable clocks, muxes, etc. for SDMMC controllers */
clock_init_mmc();
pin_mux_mmc();
debug("board_mmc_init: init eMMC\n");
/* init dev 0, eMMC chip, with 4-bit bus */
tegra2_mmc_init(0, 4);
debug("board_mmc_init: init SD slot\n");
/* init dev 1, SD slot, with 4-bit bus */
tegra2_mmc_init(1, 4);
return 0;
}
/* this is a weak define that we are overriding */
int board_mmc_getcd(u8 *cd, struct mmc *mmc)
{
debug("board_mmc_getcd called\n");
/*
* Hard-code CD presence for now. Need to add GPIO inputs
* for Seaboard & Harmony (& Kaen/Aebl/Wario?)
*/
*cd = 1;
return 0;
}
#endif

1
board/nvidia/common/board.h
View File

@ -29,5 +29,6 @@ void clock_init(void);
void pinmux_init(void);
void gpio_init(void);
void gpio_config_uart(void);
int tegra2_mmc_init(int dev_index, int bus_width);
#endif /* BOARD_H */

93
common/cmd_mmc.c
View File

@ -87,6 +87,12 @@ U_BOOT_CMD(
);
#else /* !CONFIG_GENERIC_MMC */
enum mmc_state {
MMC_INVALID,
MMC_READ,
MMC_WRITE,
MMC_ERASE,
};
static void print_mmcinfo(struct mmc *mmc)
{
printf("Device: %s\n", mmc->name);
@ -144,6 +150,8 @@ U_BOOT_CMD(
int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
enum mmc_state state;
if (argc < 2)
return cmd_usage(cmdtp);
@ -165,9 +173,11 @@ int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
}
mmc->has_init = 0;
mmc_init(mmc);
return 0;
if (mmc_init(mmc))
return 1;
else
return 0;
} else if (strncmp(argv[1], "part", 4) == 0) {
block_dev_desc_t *mmc_dev;
struct mmc *mmc = find_mmc_device(curr_device);
@ -239,53 +249,61 @@ int do_mmcops(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
curr_device, mmc->part_num);
return 0;
} else if (strcmp(argv[1], "read") == 0) {
void *addr = (void *)simple_strtoul(argv[2], NULL, 16);
u32 cnt = simple_strtoul(argv[4], NULL, 16);
u32 n;
u32 blk = simple_strtoul(argv[3], NULL, 16);
}
if (strcmp(argv[1], "read") == 0)
state = MMC_READ;
else if (strcmp(argv[1], "write") == 0)
state = MMC_WRITE;
else if (strcmp(argv[1], "erase") == 0)
state = MMC_ERASE;
else
state = MMC_INVALID;
if (state != MMC_INVALID) {
struct mmc *mmc = find_mmc_device(curr_device);
int idx = 2;
u32 blk, cnt, n;
void *addr;
if (state != MMC_ERASE) {
addr = (void *)simple_strtoul(argv[idx], NULL, 16);
++idx;
} else
addr = 0;
blk = simple_strtoul(argv[idx], NULL, 16);
cnt = simple_strtoul(argv[idx + 1], NULL, 16);
if (!mmc) {
printf("no mmc device at slot %x\n", curr_device);
return 1;
}
printf("\nMMC read: dev # %d, block # %d, count %d ... ",
curr_device, blk, cnt);
printf("\nMMC %s: dev # %d, block # %d, count %d ... ",
argv[1], curr_device, blk, cnt);
mmc_init(mmc);
n = mmc->block_dev.block_read(curr_device, blk, cnt, addr);
/* flush cache after read */
flush_cache((ulong)addr, cnt * 512); /* FIXME */
printf("%d blocks read: %s\n",
n, (n==cnt) ? "OK" : "ERROR");
return (n == cnt) ? 0 : 1;
} else if (strcmp(argv[1], "write") == 0) {
void *addr = (void *)simple_strtoul(argv[2], NULL, 16);
u32 cnt = simple_strtoul(argv[4], NULL, 16);
u32 n;
struct mmc *mmc = find_mmc_device(curr_device);
int blk = simple_strtoul(argv[3], NULL, 16);
if (!mmc) {
printf("no mmc device at slot %x\n", curr_device);
return 1;
switch (state) {
case MMC_READ:
n = mmc->block_dev.block_read(curr_device, blk,
cnt, addr);
/* flush cache after read */
flush_cache((ulong)addr, cnt * 512); /* FIXME */
break;
case MMC_WRITE:
n = mmc->block_dev.block_write(curr_device, blk,
cnt, addr);
break;
case MMC_ERASE:
n = mmc->block_dev.block_erase(curr_device, blk, cnt);
break;
default:
BUG();
}
printf("\nMMC write: dev # %d, block # %d, count %d ... ",
curr_device, blk, cnt);
mmc_init(mmc);
n = mmc->block_dev.block_write(curr_device, blk, cnt, addr);
printf("%d blocks written: %s\n",
n, (n == cnt) ? "OK" : "ERROR");
printf("%d blocks %s: %s\n",
n, argv[1], (n == cnt) ? "OK" : "ERROR");
return (n == cnt) ? 0 : 1;
}
@ -297,6 +315,7 @@ U_BOOT_CMD(
"MMC sub system",
"read addr blk# cnt\n"
"mmc write addr blk# cnt\n"
"mmc erase blk# cnt\n"
"mmc rescan\n"
"mmc part - lists available partition on current mmc device\n"
"mmc dev [dev] [part] - show or set current mmc device [partition]\n"

4
drivers/mmc/Makefile
View File

@ -33,11 +33,15 @@ COBJS-$(CONFIG_GENERIC_MMC) += mmc.o
COBJS-$(CONFIG_GENERIC_ATMEL_MCI) += gen_atmel_mci.o
COBJS-$(CONFIG_MMC_SPI) += mmc_spi.o
COBJS-$(CONFIG_ARM_PL180_MMCI) += arm_pl180_mmci.o
COBJS-$(CONFIG_MV_SDHCI) += mv_sdhci.o
COBJS-$(CONFIG_MXC_MMC) += mxcmmc.o
COBJS-$(CONFIG_OMAP3_MMC) += omap3_mmc.o
COBJS-$(CONFIG_OMAP_HSMMC) += omap_hsmmc.o
COBJS-$(CONFIG_PXA_MMC) += pxa_mmc.o
COBJS-$(CONFIG_S5P_MMC) += s5p_mmc.o
COBJS-$(CONFIG_SDHCI) += sdhci.o
COBJS-$(CONFIG_SH_MMCIF) += sh_mmcif.o
COBJS-$(CONFIG_TEGRA2_MMC) += tegra2_mmc.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)

9
drivers/mmc/atmel_mci.h
View File

@ -36,7 +36,7 @@ typedef struct atmel_mci {
u32 sdcr; /* 0x0c */
u32 argr; /* 0x10 */
u32 cmdr; /* 0x14 */
u32 _18; /* 0x18 */
u32 blkr; /* 0x18 */
u32 _1c; /* 0x1c */
u32 rspr; /* 0x20 */
u32 rspr1; /* 0x24 */
@ -67,6 +67,7 @@ typedef struct atmel_mci {
#define MMCI_SDCR 0x000c
#define MMCI_ARGR 0x0010
#define MMCI_CMDR 0x0014
#define MMCI_BLKR 0x0018
#define MMCI_RSPR 0x0020
#define MMCI_RSPR1 0x0024
#define MMCI_RSPR2 0x0028
@ -140,6 +141,12 @@ typedef struct atmel_mci {
#define MMCI_TRTYP_OFFSET 19
#define MMCI_TRTYP_SIZE 2
/* Bitfields in BLKR */
#define MMCI_BCNT_OFFSET 0
#define MMCI_BCNT_SIZE 16
#define MMCI_BLKLEN_OFFSET 16
#define MMCI_BLKLEN_SIZE 16
/* Bitfields in RSPRx */
#define MMCI_RSP_OFFSET 0
#define MMCI_RSP_SIZE 32

4
drivers/mmc/gen_atmel_mci.c
View File

@ -183,6 +183,10 @@ mci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
/* Figure out the transfer arguments */
cmdr = mci_encode_cmd(cmd, data, &error_flags);
if (data)
writel(MMCI_BF(BCNT, data->blocks) |
MMCI_BF(BLKLEN, mmc->read_bl_len), &mci->blkr);
/* Send the command */
writel(cmd->cmdarg, &mci->argr);
writel(cmdr, &mci->cmdr);

121
drivers/mmc/mmc.c
View File

@ -174,6 +174,88 @@ struct mmc *find_mmc_device(int dev_num)
return NULL;
}
static ulong mmc_erase_t(struct mmc *mmc, ulong start, lbaint_t blkcnt)
{
struct mmc_cmd cmd;
ulong end;
int err, start_cmd, end_cmd;
if (mmc->high_capacity)
end = start + blkcnt - 1;
else {
end = (start + blkcnt - 1) * mmc->write_bl_len;
start *= mmc->write_bl_len;
}
if (IS_SD(mmc)) {
start_cmd = SD_CMD_ERASE_WR_BLK_START;
end_cmd = SD_CMD_ERASE_WR_BLK_END;
} else {
start_cmd = MMC_CMD_ERASE_GROUP_START;
end_cmd = MMC_CMD_ERASE_GROUP_END;
}
cmd.cmdidx = start_cmd;
cmd.cmdarg = start;
cmd.resp_type = MMC_RSP_R1;
cmd.flags = 0;
err = mmc_send_cmd(mmc, &cmd, NULL);
if (err)
goto err_out;
cmd.cmdidx = end_cmd;
cmd.cmdarg = end;
err = mmc_send_cmd(mmc, &cmd, NULL);
if (err)
goto err_out;
cmd.cmdidx = MMC_CMD_ERASE;
cmd.cmdarg = SECURE_ERASE;
cmd.resp_type = MMC_RSP_R1b;
err = mmc_send_cmd(mmc, &cmd, NULL);
if (err)
goto err_out;
return 0;
err_out:
puts("mmc erase failed\n");
return err;
}
static unsigned long
mmc_berase(int dev_num, unsigned long start, lbaint_t blkcnt)
{
int err = 0;
struct mmc *mmc = find_mmc_device(dev_num);
lbaint_t blk = 0, blk_r = 0;
if (!mmc)
return -1;
if ((start % mmc->erase_grp_size) || (blkcnt % mmc->erase_grp_size))
printf("\n\nCaution! Your devices Erase group is 0x%x\n"
"The erase range would be change to 0x%lx~0x%lx\n\n",
mmc->erase_grp_size, start & ~(mmc->erase_grp_size - 1),
((start + blkcnt + mmc->erase_grp_size)
& ~(mmc->erase_grp_size - 1)) - 1);
while (blk < blkcnt) {
blk_r = ((blkcnt - blk) > mmc->erase_grp_size) ?
mmc->erase_grp_size : (blkcnt - blk);
err = mmc_erase_t(mmc, start + blk, blk_r);
if (err)
break;
blk += blk_r;
}
return blk;
}
static ulong
mmc_write_blocks(struct mmc *mmc, ulong start, lbaint_t blkcnt, const void*src)
{
@ -449,6 +531,10 @@ int mmc_send_op_cond(struct mmc *mmc)
(mmc->voltages &
(cmd.response[0] & OCR_VOLTAGE_MASK)) |
(cmd.response[0] & OCR_ACCESS_MODE));
if (mmc->host_caps & MMC_MODE_HC)
cmd.cmdarg |= OCR_HCS;
cmd.flags = 0;
err = mmc_send_cmd(mmc, &cmd, NULL);
@ -771,7 +857,7 @@ int mmc_startup(struct mmc *mmc)
{
int err;
uint mult, freq;
u64 cmult, csize;
u64 cmult, csize, capacity;
struct mmc_cmd cmd;
char ext_csd[512];
int timeout = 1000;
@ -911,14 +997,40 @@ int mmc_startup(struct mmc *mmc)
return err;
}
/*
* For SD, its erase group is always one sector
*/
mmc->erase_grp_size = 1;
mmc->part_config = MMCPART_NOAVAILABLE;
if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) {
/* check ext_csd version and capacity */
err = mmc_send_ext_csd(mmc, ext_csd);
if (!err & (ext_csd[192] >= 2)) {
mmc->capacity = ext_csd[212] << 0 | ext_csd[213] << 8 |
ext_csd[214] << 16 | ext_csd[215] << 24;
mmc->capacity *= 512;
/*
* According to the JEDEC Standard, the value of
* ext_csd's capacity is valid if the value is more
* than 2GB
*/
capacity = ext_csd[212] << 0 | ext_csd[213] << 8 |
ext_csd[214] << 16 | ext_csd[215] << 24;
capacity *= 512;
if ((capacity >> 20) > 2 * 1024)
mmc->capacity = capacity;
}
/*
* Check whether GROUP_DEF is set, if yes, read out
* group size from ext_csd directly, or calculate
* the group size from the csd value.
*/
if (ext_csd[175])
mmc->erase_grp_size = ext_csd[224] * 512 * 1024;
else {
int erase_gsz, erase_gmul;
erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10;
erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5;
mmc->erase_grp_size = (erase_gsz + 1)
* (erase_gmul + 1);
}
/* store the partition info of emmc */
@ -1044,6 +1156,7 @@ int mmc_register(struct mmc *mmc)
mmc->block_dev.removable = 1;
mmc->block_dev.block_read = mmc_bread;
mmc->block_dev.block_write = mmc_bwrite;
mmc->block_dev.block_erase = mmc_berase;
if (!mmc->b_max)
mmc->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;

21
drivers/mmc/mv_sdhci.c Normal file
View File

@ -0,0 +1,21 @@
#include <common.h>
#include <malloc.h>
#include <sdhci.h>
static char *MVSDH_NAME = "mv_sdh";
int mv_sdh_init(u32 regbase, u32 max_clk, u32 min_clk, u32 quirks)
{
struct sdhci_host *host = NULL;
host = (struct sdhci_host *)malloc(sizeof(struct sdhci_host));
if (!host) {
printf("sdh_host malloc fail!\n");
return 1;
}
host->name = MVSDH_NAME;
host->ioaddr = (void *)regbase;
host->quirks = quirks;
host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
add_sdhci(host, max_clk, min_clk);
return 0;
}

2
drivers/mmc/s5p_mmc.c
View File

@ -462,7 +462,7 @@ static int s5p_mmc_initialize(int dev_index, int bus_width)
mmc->host_caps = MMC_MODE_8BIT;
else
mmc->host_caps = MMC_MODE_4BIT;
mmc->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
mmc->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS | MMC_MODE_HC;
mmc->f_min = 400000;
mmc->f_max = 52000000;

433
drivers/mmc/sdhci.c Normal file
View File

@ -0,0 +1,433 @@
/*
* Copyright 2011, Marvell Semiconductor Inc.
* Lei Wen <leiwen@marvell.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; either version 2 of
* the License, or (at your option) any later version.
*
* 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
*
* Back ported to the 8xx platform (from the 8260 platform) by
* Murray.Jensen@cmst.csiro.au, 27-Jan-01.
*/
#include <common.h>
#include <malloc.h>
#include <mmc.h>
#include <sdhci.h>
void *aligned_buffer;
static void sdhci_reset(struct sdhci_host *host, u8 mask)
{
unsigned long timeout;
/* Wait max 100 ms */
timeout = 100;
sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET);
while (sdhci_readb(host, SDHCI_SOFTWARE_RESET) & mask) {
if (timeout == 0) {
printf("Reset 0x%x never completed.\n", (int)mask);
return;
}
timeout--;
udelay(1000);
}
}
static void sdhci_cmd_done(struct sdhci_host *host, struct mmc_cmd *cmd)
{
int i;
if (cmd->resp_type & MMC_RSP_136) {
/* CRC is stripped so we need to do some shifting. */
for (i = 0; i < 4; i++) {
cmd->response[i] = sdhci_readl(host,
SDHCI_RESPONSE + (3-i)*4) << 8;
if (i != 3)
cmd->response[i] |= sdhci_readb(host,
SDHCI_RESPONSE + (3-i)*4-1);
}
} else {
cmd->response[0] = sdhci_readl(host, SDHCI_RESPONSE);
}
}
static void sdhci_transfer_pio(struct sdhci_host *host, struct mmc_data *data)
{
int i;
char *offs;
for (i = 0; i < data->blocksize; i += 4) {
offs = data->dest + i;
if (data->flags == MMC_DATA_READ)
*(u32 *)offs = sdhci_readl(host, SDHCI_BUFFER);
else
sdhci_writel(host, *(u32 *)offs, SDHCI_BUFFER);
}
}
static int sdhci_transfer_data(struct sdhci_host *host, struct mmc_data *data,
unsigned int start_addr)
{
unsigned int stat, rdy, mask, block = 0;
rdy = SDHCI_INT_SPACE_AVAIL | SDHCI_INT_DATA_AVAIL;
mask = SDHCI_DATA_AVAILABLE | SDHCI_SPACE_AVAILABLE;
do {
stat = sdhci_readl(host, SDHCI_INT_STATUS);
if (stat & SDHCI_INT_ERROR) {
printf("Error detected in status(0x%X)!\n", stat);
return -1;
}
if (stat & rdy) {
if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & mask))
continue;
sdhci_writel(host, rdy, SDHCI_INT_STATUS);
sdhci_transfer_pio(host, data);
data->dest += data->blocksize;
if (++block >= data->blocks)
break;
}
#ifdef CONFIG_MMC_SDMA
if (stat & SDHCI_INT_DMA_END) {
sdhci_writel(host, SDHCI_INT_DMA_END, SDHCI_INT_STATUS);
start_addr &= SDHCI_DEFAULT_BOUNDARY_SIZE - 1;
start_addr += SDHCI_DEFAULT_BOUNDARY_SIZE;
sdhci_writel(host, start_addr, SDHCI_DMA_ADDRESS);
}
#endif
} while (!(stat & SDHCI_INT_DATA_END));
return 0;
}
int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd,
struct mmc_data *data)
{
struct sdhci_host *host = (struct sdhci_host *)mmc->priv;
unsigned int stat = 0;
int ret = 0;
int trans_bytes = 0, is_aligned = 1;
u32 mask, flags, mode;
unsigned int timeout, start_addr = 0;
/* Wait max 10 ms */
timeout = 10;
sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_INT_STATUS);
mask = SDHCI_CMD_INHIBIT | SDHCI_DATA_INHIBIT;
/* We shouldn't wait for data inihibit for stop commands, even
though they might use busy signaling */
if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
mask &= ~SDHCI_DATA_INHIBIT;
while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) {
if (timeout == 0) {
printf("Controller never released inhibit bit(s).\n");
return COMM_ERR;
}
timeout--;
udelay(1000);
}
mask = SDHCI_INT_RESPONSE;
if (!(cmd->resp_type & MMC_RSP_PRESENT))
flags = SDHCI_CMD_RESP_NONE;
else if (cmd->resp_type & MMC_RSP_136)
flags = SDHCI_CMD_RESP_LONG;
else if (cmd->resp_type & MMC_RSP_BUSY) {
flags = SDHCI_CMD_RESP_SHORT_BUSY;
mask |= SDHCI_INT_DATA_END;
} else
flags = SDHCI_CMD_RESP_SHORT;
if (cmd->resp_type & MMC_RSP_CRC)
flags |= SDHCI_CMD_CRC;
if (cmd->resp_type & MMC_RSP_OPCODE)
flags |= SDHCI_CMD_INDEX;
if (data)
flags |= SDHCI_CMD_DATA;
/*Set Transfer mode regarding to data flag*/
if (data != 0) {
sdhci_writeb(host, 0xe, SDHCI_TIMEOUT_CONTROL);
mode = SDHCI_TRNS_BLK_CNT_EN;
trans_bytes = data->blocks * data->blocksize;
if (data->blocks > 1)
mode |= SDHCI_TRNS_MULTI;
if (data->flags == MMC_DATA_READ)
mode |= SDHCI_TRNS_READ;
#ifdef CONFIG_MMC_SDMA
if (data->flags == MMC_DATA_READ)
start_addr = (unsigned int)data->dest;
else
start_addr = (unsigned int)data->src;
if ((host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) &&
(start_addr & 0x7) != 0x0) {
is_aligned = 0;
start_addr = (unsigned int)aligned_buffer;
if (data->flags != MMC_DATA_READ)
memcpy(aligned_buffer, data->src, trans_bytes);
}
sdhci_writel(host, start_addr, SDHCI_DMA_ADDRESS);
mode |= SDHCI_TRNS_DMA;
#endif
sdhci_writew(host, SDHCI_MAKE_BLKSZ(SDHCI_DEFAULT_BOUNDARY_ARG,
data->blocksize),
SDHCI_BLOCK_SIZE);
sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT);
sdhci_writew(host, mode, SDHCI_TRANSFER_MODE);
}
sdhci_writel(host, cmd->cmdarg, SDHCI_ARGUMENT);
#ifdef CONFIG_MMC_SDMA
flush_cache(0, ~0);
#endif
sdhci_writew(host, SDHCI_MAKE_CMD(cmd->cmdidx, flags), SDHCI_COMMAND);
do {
stat = sdhci_readl(host, SDHCI_INT_STATUS);
if (stat & SDHCI_INT_ERROR)
break;
} while ((stat & mask) != mask);
if ((stat & (SDHCI_INT_ERROR | mask)) == mask) {
sdhci_cmd_done(host, cmd);
sdhci_writel(host, mask, SDHCI_INT_STATUS);
} else
ret = -1;
if (!ret && data)
ret = sdhci_transfer_data(host, data, start_addr);
stat = sdhci_readl(host, SDHCI_INT_STATUS);
sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_INT_STATUS);
if (!ret) {
if ((host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) &&
!is_aligned && (data->flags == MMC_DATA_READ))
memcpy(data->dest, aligned_buffer, trans_bytes);
return 0;
}
sdhci_reset(host, SDHCI_RESET_CMD);
sdhci_reset(host, SDHCI_RESET_DATA);
if (stat & SDHCI_INT_TIMEOUT)
return TIMEOUT;
else
return COMM_ERR;
}
static int sdhci_set_clock(struct mmc *mmc, unsigned int clock)
{
struct sdhci_host *host = (struct sdhci_host *)mmc->priv;
unsigned int div, clk, timeout;
sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
if (clock == 0)
return 0;
if (host->version >= SDHCI_SPEC_300) {
/* Version 3.00 divisors must be a multiple of 2. */
if (mmc->f_max <= clock)
div = 1;
else {
for (div = 2; div < SDHCI_MAX_DIV_SPEC_300; div += 2) {
if ((mmc->f_max / div) <= clock)
break;
}
}
} else {
/* Version 2.00 divisors must be a power of 2. */
for (div = 1; div < SDHCI_MAX_DIV_SPEC_200; div *= 2) {
if ((mmc->f_max / div) <= clock)
break;
}
}
div >>= 1;
clk = (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT;
clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN)
<< SDHCI_DIVIDER_HI_SHIFT;
clk |= SDHCI_CLOCK_INT_EN;
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
/* Wait max 20 ms */
timeout = 20;
while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL))
& SDHCI_CLOCK_INT_STABLE)) {
if (timeout == 0) {
printf("Internal clock never stabilised.\n");
return -1;
}
timeout--;
udelay(1000);
}
clk |= SDHCI_CLOCK_CARD_EN;
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
return 0;
}
static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
{
u8 pwr = 0;
if (power != (unsigned short)-1) {
switch (1 << power) {
case MMC_VDD_165_195:
pwr = SDHCI_POWER_180;
break;
case MMC_VDD_29_30:
case MMC_VDD_30_31:
pwr = SDHCI_POWER_300;
break;
case MMC_VDD_32_33:
case MMC_VDD_33_34:
pwr = SDHCI_POWER_330;
break;
}
}
if (pwr == 0) {
sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);
return;
}
pwr |= SDHCI_POWER_ON;
sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
}
void sdhci_set_ios(struct mmc *mmc)
{
u32 ctrl;
struct sdhci_host *host = (struct sdhci_host *)mmc->priv;
if (mmc->clock != host->clock)
sdhci_set_clock(mmc, mmc->clock);
/* Set bus width */
ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
if (mmc->bus_width == 8) {
ctrl &= ~SDHCI_CTRL_4BITBUS;
if (host->version >= SDHCI_SPEC_300)
ctrl |= SDHCI_CTRL_8BITBUS;
} else {
if (host->version >= SDHCI_SPEC_300)
ctrl &= ~SDHCI_CTRL_8BITBUS;
if (mmc->bus_width == 4)
ctrl |= SDHCI_CTRL_4BITBUS;
else
ctrl &= ~SDHCI_CTRL_4BITBUS;
}
if (mmc->clock > 26000000)
ctrl |= SDHCI_CTRL_HISPD;
else
ctrl &= ~SDHCI_CTRL_HISPD;
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
}
int sdhci_init(struct mmc *mmc)
{
struct sdhci_host *host = (struct sdhci_host *)mmc->priv;
if ((host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) && !aligned_buffer) {
aligned_buffer = memalign(8, 512*1024);
if (!aligned_buffer) {
printf("Aligned buffer alloc failed!!!");
return -1;
}
}
/* Eable all state */
sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_INT_ENABLE);
sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_SIGNAL_ENABLE);
sdhci_set_power(host, fls(mmc->voltages) - 1);
return 0;
}
int add_sdhci(struct sdhci_host *host, u32 max_clk, u32 min_clk)
{
struct mmc *mmc;
unsigned int caps;
mmc = malloc(sizeof(struct mmc));
if (!mmc) {
printf("mmc malloc fail!\n");
return -1;
}
mmc->priv = host;
sprintf(mmc->name, "%s", host->name);
mmc->send_cmd = sdhci_send_command;
mmc->set_ios = sdhci_set_ios;
mmc->init = sdhci_init;
caps = sdhci_readl(host, SDHCI_CAPABILITIES);
#ifdef CONFIG_MMC_SDMA
if (!(caps & SDHCI_CAN_DO_SDMA)) {
printf("Your controller don't support sdma!!\n");
return -1;
}
#endif
if (max_clk)
mmc->f_max = max_clk;
else {
if (host->version >= SDHCI_SPEC_300)
mmc->f_max = (caps & SDHCI_CLOCK_V3_BASE_MASK)
>> SDHCI_CLOCK_BASE_SHIFT;
else
mmc->f_max = (caps & SDHCI_CLOCK_BASE_MASK)
>> SDHCI_CLOCK_BASE_SHIFT;
mmc->f_max *= 1000000;
}
if (mmc->f_max == 0) {
printf("Hardware doesn't specify base clock frequency\n");
return -1;
}
if (min_clk)
mmc->f_min = min_clk;
else {
if (host->version >= SDHCI_SPEC_300)
mmc->f_min = mmc->f_max / SDHCI_MAX_DIV_SPEC_300;
else
mmc->f_min = mmc->f_max / SDHCI_MAX_DIV_SPEC_200;
}
mmc->voltages = 0;
if (caps & SDHCI_CAN_VDD_330)
mmc->voltages |= MMC_VDD_32_33 | MMC_VDD_33_34;
if (caps & SDHCI_CAN_VDD_300)
mmc->voltages |= MMC_VDD_29_30 | MMC_VDD_30_31;
if (caps & SDHCI_CAN_VDD_180)
mmc->voltages |= MMC_VDD_165_195;
mmc->host_caps = MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_4BIT;
if (caps & SDHCI_CAN_DO_8BIT)
mmc->host_caps |= MMC_MODE_8BIT;
sdhci_reset(host, SDHCI_RESET_ALL);
mmc_register(mmc);
return 0;
}

608
drivers/mmc/sh_mmcif.c Normal file
View File

@ -0,0 +1,608 @@
/*
* MMCIF driver.
*
* Copyright (C) 2011 Renesas Solutions Corp.
*
* 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; either version 2 of the License.
*/
#include <config.h>
#include <common.h>
#include <watchdog.h>
#include <command.h>
#include <mmc.h>
#include <malloc.h>
#include <asm/errno.h>
#include <asm/io.h>
#include "sh_mmcif.h"
#define DRIVER_NAME "sh_mmcif"
static void *mmc_priv(struct mmc *mmc)
{
return (void *)mmc->priv;
}
static int sh_mmcif_intr(void *dev_id)
{
struct sh_mmcif_host *host = dev_id;
u32 state = 0;
state = sh_mmcif_read(&host->regs->ce_int);
state &= sh_mmcif_read(&host->regs->ce_int_mask);
if (state & INT_RBSYE) {
sh_mmcif_write(~(INT_RBSYE | INT_CRSPE), &host->regs->ce_int);
sh_mmcif_bitclr(MASK_MRBSYE, &host->regs->ce_int_mask);
goto end;
} else if (state & INT_CRSPE) {
sh_mmcif_write(~INT_CRSPE, &host->regs->ce_int);
sh_mmcif_bitclr(MASK_MCRSPE, &host->regs->ce_int_mask);
/* one more interrupt (INT_RBSYE) */
if (sh_mmcif_read(&host->regs->ce_cmd_set) & CMD_SET_RBSY)
return -EAGAIN;
goto end;
} else if (state & INT_BUFREN) {
sh_mmcif_write(~INT_BUFREN, &host->regs->ce_int);
sh_mmcif_bitclr(MASK_MBUFREN, &host->regs->ce_int_mask);
goto end;
} else if (state & INT_BUFWEN) {
sh_mmcif_write(~INT_BUFWEN, &host->regs->ce_int);
sh_mmcif_bitclr(MASK_MBUFWEN, &host->regs->ce_int_mask);
goto end;
} else if (state & INT_CMD12DRE) {
sh_mmcif_write(~(INT_CMD12DRE | INT_CMD12RBE | INT_CMD12CRE |
INT_BUFRE), &host->regs->ce_int);
sh_mmcif_bitclr(MASK_MCMD12DRE, &host->regs->ce_int_mask);
goto end;
} else if (state & INT_BUFRE) {
sh_mmcif_write(~INT_BUFRE, &host->regs->ce_int);
sh_mmcif_bitclr(MASK_MBUFRE, &host->regs->ce_int_mask);
goto end;
} else if (state & INT_DTRANE) {
sh_mmcif_write(~INT_DTRANE, &host->regs->ce_int);
sh_mmcif_bitclr(MASK_MDTRANE, &host->regs->ce_int_mask);
goto end;
} else if (state & INT_CMD12RBE) {
sh_mmcif_write(~(INT_CMD12RBE | INT_CMD12CRE),
&host->regs->ce_int);
sh_mmcif_bitclr(MASK_MCMD12RBE, &host->regs->ce_int_mask);
goto end;
} else if (state & INT_ERR_STS) {
/* err interrupts */
sh_mmcif_write(~state, &host->regs->ce_int);
sh_mmcif_bitclr(state, &host->regs->ce_int_mask);
goto err;
} else
return -EAGAIN;
err:
host->sd_error = 1;
debug("%s: int err state = %08x\n", DRIVER_NAME, state);
end:
host->wait_int = 1;
return 0;
}
static int mmcif_wait_interrupt_flag(struct sh_mmcif_host *host)
{
int timeout = 10000000;
while (1) {
timeout--;
if (timeout < 0) {
printf("timeout\n");
return 0;
}
if (!sh_mmcif_intr(host))
break;
udelay(1); /* 1 usec */
}
return 1; /* Return value: NOT 0 = complete waiting */
}
static void sh_mmcif_clock_control(struct sh_mmcif_host *host, unsigned int clk)
{
int i;
sh_mmcif_bitclr(CLK_ENABLE, &host->regs->ce_clk_ctrl);
sh_mmcif_bitclr(CLK_CLEAR, &host->regs->ce_clk_ctrl);
if (!clk)
return;
if (clk == CLKDEV_EMMC_DATA) {
sh_mmcif_bitset(CLK_PCLK, &host->regs->ce_clk_ctrl);
} else {
for (i = 1; (unsigned int)host->clk / (1 << i) >= clk; i++)
;
sh_mmcif_bitset((i - 1) << 16, &host->regs->ce_clk_ctrl);
}
sh_mmcif_bitset(CLK_ENABLE, &host->regs->ce_clk_ctrl);
}
static void sh_mmcif_sync_reset(struct sh_mmcif_host *host)
{
u32 tmp;
tmp = sh_mmcif_read(&host->regs->ce_clk_ctrl) & (CLK_ENABLE |
CLK_CLEAR);
sh_mmcif_write(SOFT_RST_ON, &host->regs->ce_version);
sh_mmcif_write(SOFT_RST_OFF, &host->regs->ce_version);
sh_mmcif_bitset(tmp | SRSPTO_256 | SRBSYTO_29 | SRWDTO_29 | SCCSTO_29,
&host->regs->ce_clk_ctrl);
/* byte swap on */
sh_mmcif_bitset(BUF_ACC_ATYP, &host->regs->ce_buf_acc);
}
static int sh_mmcif_error_manage(struct sh_mmcif_host *host)
{
u32 state1, state2;
int ret, timeout = 10000000;
host->sd_error = 0;
host->wait_int = 0;
state1 = sh_mmcif_read(&host->regs->ce_host_sts1);
state2 = sh_mmcif_read(&host->regs->ce_host_sts2);
debug("%s: ERR HOST_STS1 = %08x\n", \
DRIVER_NAME, sh_mmcif_read(&host->regs->ce_host_sts1));
debug("%s: ERR HOST_STS2 = %08x\n", \
DRIVER_NAME, sh_mmcif_read(&host->regs->ce_host_sts2));
if (state1 & STS1_CMDSEQ) {
debug("%s: Forced end of command sequence\n", DRIVER_NAME);
sh_mmcif_bitset(CMD_CTRL_BREAK, &host->regs->ce_cmd_ctrl);
sh_mmcif_bitset(~CMD_CTRL_BREAK, &host->regs->ce_cmd_ctrl);
while (1) {
timeout--;
if (timeout < 0) {
printf(DRIVER_NAME": Forceed end of " \
"command sequence timeout err\n");
return -EILSEQ;
}
if (!(sh_mmcif_read(&host->regs->ce_host_sts1)
& STS1_CMDSEQ))
break;
}
sh_mmcif_sync_reset(host);
return -EILSEQ;
}
if (state2 & STS2_CRC_ERR)
ret = -EILSEQ;
else if (state2 & STS2_TIMEOUT_ERR)
ret = TIMEOUT;
else
ret = -EILSEQ;
return ret;
}
static int sh_mmcif_single_read(struct sh_mmcif_host *host,
struct mmc_data *data)
{
long time;
u32 blocksize, i;
unsigned long *p = (unsigned long *)data->dest;
if ((unsigned long)p & 0x00000001) {
printf("%s: The data pointer is unaligned.", __func__);
return -EIO;
}
host->wait_int = 0;
/* buf read enable */
sh_mmcif_bitset(MASK_MBUFREN, &host->regs->ce_int_mask);
time = mmcif_wait_interrupt_flag(host);
if (time == 0 || host->sd_error != 0)
return sh_mmcif_error_manage(host);
host->wait_int = 0;
blocksize = (BLOCK_SIZE_MASK &
sh_mmcif_read(&host->regs->ce_block_set)) + 3;
for (i = 0; i < blocksize / 4; i++)
*p++ = sh_mmcif_read(&host->regs->ce_data);
/* buffer read end */
sh_mmcif_bitset(MASK_MBUFRE, &host->regs->ce_int_mask);
time = mmcif_wait_interrupt_flag(host);
if (time == 0 || host->sd_error != 0)
return sh_mmcif_error_manage(host);
host->wait_int = 0;
return 0;
}
static int sh_mmcif_multi_read(struct sh_mmcif_host *host,
struct mmc_data *data)
{
long time;
u32 blocksize, i, j;
unsigned long *p = (unsigned long *)data->dest;
if ((unsigned long)p & 0x00000001) {
printf("%s: The data pointer is unaligned.", __func__);
return -EIO;
}
host->wait_int = 0;
blocksize = BLOCK_SIZE_MASK & sh_mmcif_read(&host->regs->ce_block_set);
for (j = 0; j < data->blocks; j++) {
sh_mmcif_bitset(MASK_MBUFREN, &host->regs->ce_int_mask);
time = mmcif_wait_interrupt_flag(host);
if (time == 0 || host->sd_error != 0)
return sh_mmcif_error_manage(host);
host->wait_int = 0;
for (i = 0; i < blocksize / 4; i++)
*p++ = sh_mmcif_read(&host->regs->ce_data);
WATCHDOG_RESET();
}
return 0;
}
static int sh_mmcif_single_write(struct sh_mmcif_host *host,
struct mmc_data *data)
{
long time;
u32 blocksize, i;
const unsigned long *p = (unsigned long *)data->dest;
if ((unsigned long)p & 0x00000001) {
printf("%s: The data pointer is unaligned.", __func__);
return -EIO;
}
host->wait_int = 0;
sh_mmcif_bitset(MASK_MBUFWEN, &host->regs->ce_int_mask);
time = mmcif_wait_interrupt_flag(host);
if (time == 0 || host->sd_error != 0)
return sh_mmcif_error_manage(host);
host->wait_int = 0;
blocksize = (BLOCK_SIZE_MASK &
sh_mmcif_read(&host->regs->ce_block_set)) + 3;
for (i = 0; i < blocksize / 4; i++)
sh_mmcif_write(*p++, &host->regs->ce_data);
/* buffer write end */
sh_mmcif_bitset(MASK_MDTRANE, &host->regs->ce_int_mask);
time = mmcif_wait_interrupt_flag(host);
if (time == 0 || host->sd_error != 0)
return sh_mmcif_error_manage(host);
host->wait_int = 0;
return 0;
}
static int sh_mmcif_multi_write(struct sh_mmcif_host *host,
struct mmc_data *data)
{
long time;
u32 i, j, blocksize;
const unsigned long *p = (unsigned long *)data->dest;
if ((unsigned long)p & 0x00000001) {
printf("%s: The data pointer is unaligned.", __func__);
return -EIO;
}
host->wait_int = 0;
blocksize = BLOCK_SIZE_MASK & sh_mmcif_read(&host->regs->ce_block_set);
for (j = 0; j < data->blocks; j++) {
sh_mmcif_bitset(MASK_MBUFWEN, &host->regs->ce_int_mask);
time = mmcif_wait_interrupt_flag(host);
if (time == 0 || host->sd_error != 0)
return sh_mmcif_error_manage(host);
host->wait_int = 0;
for (i = 0; i < blocksize / 4; i++)
sh_mmcif_write(*p++, &host->regs->ce_data);
WATCHDOG_RESET();
}
return 0;
}
static void sh_mmcif_get_response(struct sh_mmcif_host *host,
struct mmc_cmd *cmd)
{
if (cmd->resp_type & MMC_RSP_136) {
cmd->response[0] = sh_mmcif_read(&host->regs->ce_resp3);
cmd->response[1] = sh_mmcif_read(&host->regs->ce_resp2);
cmd->response[2] = sh_mmcif_read(&host->regs->ce_resp1);
cmd->response[3] = sh_mmcif_read(&host->regs->ce_resp0);
debug(" RESP %08x, %08x, %08x, %08x\n", cmd->response[0],
cmd->response[1], cmd->response[2], cmd->response[3]);
} else {
cmd->response[0] = sh_mmcif_read(&host->regs->ce_resp0);
}
}
static void sh_mmcif_get_cmd12response(struct sh_mmcif_host *host,
struct mmc_cmd *cmd)
{
cmd->response[0] = sh_mmcif_read(&host->regs->ce_resp_cmd12);
}
static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host,
struct mmc_data *data, struct mmc_cmd *cmd)
{
u32 tmp = 0;
u32 opc = cmd->cmdidx;
/* Response Type check */
switch (cmd->resp_type) {
case MMC_RSP_NONE:
tmp |= CMD_SET_RTYP_NO;
break;
case MMC_RSP_R1:
case MMC_RSP_R1b:
case MMC_RSP_R3:
tmp |= CMD_SET_RTYP_6B;
break;
case MMC_RSP_R2:
tmp |= CMD_SET_RTYP_17B;
break;
default:
printf(DRIVER_NAME": Not support type response.\n");
break;
}
/* RBSY */
if (opc == MMC_CMD_SWITCH)
tmp |= CMD_SET_RBSY;
/* WDAT / DATW */
if (host->data) {
tmp |= CMD_SET_WDAT;
switch (host->bus_width) {
case MMC_BUS_WIDTH_1:
tmp |= CMD_SET_DATW_1;
break;
case MMC_BUS_WIDTH_4:
tmp |= CMD_SET_DATW_4;
break;
case MMC_BUS_WIDTH_8:
tmp |= CMD_SET_DATW_8;
break;
default:
printf(DRIVER_NAME": Not support bus width.\n");
break;
}
}
/* DWEN */
if (opc == MMC_CMD_WRITE_SINGLE_BLOCK ||
opc == MMC_CMD_WRITE_MULTIPLE_BLOCK)
tmp |= CMD_SET_DWEN;
/* CMLTE/CMD12EN */
if (opc == MMC_CMD_READ_MULTIPLE_BLOCK ||
opc == MMC_CMD_WRITE_MULTIPLE_BLOCK) {
tmp |= CMD_SET_CMLTE | CMD_SET_CMD12EN;
sh_mmcif_bitset(data->blocks << 16, &host->regs->ce_block_set);
}
/* RIDXC[1:0] check bits */
if (opc == MMC_CMD_SEND_OP_COND || opc == MMC_CMD_ALL_SEND_CID ||
opc == MMC_CMD_SEND_CSD || opc == MMC_CMD_SEND_CID)
tmp |= CMD_SET_RIDXC_BITS;
/* RCRC7C[1:0] check bits */
if (opc == MMC_CMD_SEND_OP_COND)
tmp |= CMD_SET_CRC7C_BITS;
/* RCRC7C[1:0] internal CRC7 */
if (opc == MMC_CMD_ALL_SEND_CID ||
opc == MMC_CMD_SEND_CSD || opc == MMC_CMD_SEND_CID)
tmp |= CMD_SET_CRC7C_INTERNAL;
return opc = ((opc << 24) | tmp);
}
static u32 sh_mmcif_data_trans(struct sh_mmcif_host *host,
struct mmc_data *data, u16 opc)
{
u32 ret;
switch (opc) {
case MMC_CMD_READ_MULTIPLE_BLOCK:
ret = sh_mmcif_multi_read(host, data);
break;
case MMC_CMD_WRITE_MULTIPLE_BLOCK:
ret = sh_mmcif_multi_write(host, data);
break;
case MMC_CMD_WRITE_SINGLE_BLOCK:
ret = sh_mmcif_single_write(host, data);
break;
case MMC_CMD_READ_SINGLE_BLOCK:
case MMC_CMD_SEND_EXT_CSD:
ret = sh_mmcif_single_read(host, data);
break;
default:
printf(DRIVER_NAME": NOT SUPPORT CMD = d'%08d\n", opc);
ret = -EINVAL;
break;
}
return ret;
}
static int sh_mmcif_start_cmd(struct sh_mmcif_host *host,
struct mmc_data *data, struct mmc_cmd *cmd)
{
long time;
int ret = 0, mask = 0;
u32 opc = cmd->cmdidx;
if (opc == MMC_CMD_STOP_TRANSMISSION) {
/* MMCIF sends the STOP command automatically */
if (host->last_cmd == MMC_CMD_READ_MULTIPLE_BLOCK)
sh_mmcif_bitset(MASK_MCMD12DRE,
&host->regs->ce_int_mask);
else
sh_mmcif_bitset(MASK_MCMD12RBE,
&host->regs->ce_int_mask);
time = mmcif_wait_interrupt_flag(host);
if (time == 0 || host->sd_error != 0)
return sh_mmcif_error_manage(host);
sh_mmcif_get_cmd12response(host, cmd);
return 0;
}
if (opc == MMC_CMD_SWITCH)
mask = MASK_MRBSYE;
else
mask = MASK_MCRSPE;
mask |= MASK_MCMDVIO | MASK_MBUFVIO | MASK_MWDATERR |
MASK_MRDATERR | MASK_MRIDXERR | MASK_MRSPERR |
MASK_MCCSTO | MASK_MCRCSTO | MASK_MWDATTO |
MASK_MRDATTO | MASK_MRBSYTO | MASK_MRSPTO;
if (host->data) {
sh_mmcif_write(0, &host->regs->ce_block_set);
sh_mmcif_write(data->blocksize, &host->regs->ce_block_set);
}
opc = sh_mmcif_set_cmd(host, data, cmd);
sh_mmcif_write(INT_START_MAGIC, &host->regs->ce_int);
sh_mmcif_write(mask, &host->regs->ce_int_mask);
debug("CMD%d ARG:%08x\n", cmd->cmdidx, cmd->cmdarg);
/* set arg */
sh_mmcif_write(cmd->cmdarg, &host->regs->ce_arg);
host->wait_int = 0;
/* set cmd */
sh_mmcif_write(opc, &host->regs->ce_cmd_set);
time = mmcif_wait_interrupt_flag(host);
if (time == 0)
return sh_mmcif_error_manage(host);
if (host->sd_error) {
switch (cmd->cmdidx) {
case MMC_CMD_ALL_SEND_CID:
case MMC_CMD_SELECT_CARD:
case MMC_CMD_APP_CMD:
ret = TIMEOUT;
break;
default:
printf(DRIVER_NAME": Cmd(d'%d) err\n", cmd->cmdidx);
ret = sh_mmcif_error_manage(host);
break;
}
host->sd_error = 0;
host->wait_int = 0;
return ret;
}
/* if no response */
if (!(opc & 0x00C00000))
return 0;
if (host->wait_int == 1) {
sh_mmcif_get_response(host, cmd);
host->wait_int = 0;
}
if (host->data)
ret = sh_mmcif_data_trans(host, data, cmd->cmdidx);
host->last_cmd = cmd->cmdidx;
return ret;
}
static int sh_mmcif_request(struct mmc *mmc, struct mmc_cmd *cmd,
struct mmc_data *data)
{
struct sh_mmcif_host *host = mmc_priv(mmc);
int ret;
WATCHDOG_RESET();
switch (cmd->cmdidx) {
case MMC_CMD_APP_CMD:
return TIMEOUT;
case MMC_CMD_SEND_EXT_CSD: /* = SD_SEND_IF_COND (8) */
if (data)
/* ext_csd */
break;
else
/* send_if_cond cmd (not support) */
return TIMEOUT;
default:
break;
}
host->sd_error = 0;
host->data = data;
ret = sh_mmcif_start_cmd(host, data, cmd);
host->data = NULL;
return ret;
}
static void sh_mmcif_set_ios(struct mmc *mmc)
{
struct sh_mmcif_host *host = mmc_priv(mmc);
if (mmc->clock)
sh_mmcif_clock_control(host, mmc->clock);
if (mmc->bus_width == 8)
host->bus_width = MMC_BUS_WIDTH_8;
else if (mmc->bus_width == 4)
host->bus_width = MMC_BUS_WIDTH_4;
else
host->bus_width = MMC_BUS_WIDTH_1;
debug("clock = %d, buswidth = %d\n", mmc->clock, mmc->bus_width);
}
static int sh_mmcif_init(struct mmc *mmc)
{
struct sh_mmcif_host *host = mmc_priv(mmc);
sh_mmcif_sync_reset(host);
sh_mmcif_write(MASK_ALL, &host->regs->ce_int_mask);
return 0;
}
int mmcif_mmc_init(void)
{
int ret = 0;
struct mmc *mmc;
struct sh_mmcif_host *host = NULL;
mmc = malloc(sizeof(struct mmc));
if (!mmc)
ret = -ENOMEM;
memset(mmc, 0, sizeof(*mmc));
host = malloc(sizeof(struct sh_mmcif_host));
if (!host)
ret = -ENOMEM;
memset(host, 0, sizeof(*host));
mmc->f_min = CLKDEV_MMC_INIT;
mmc->f_max = CLKDEV_EMMC_DATA;
mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
mmc->host_caps = MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_4BIT |
MMC_MODE_8BIT;
memcpy(mmc->name, DRIVER_NAME, sizeof(DRIVER_NAME));
mmc->send_cmd = sh_mmcif_request;
mmc->set_ios = sh_mmcif_set_ios;
mmc->init = sh_mmcif_init;
host->regs = (struct sh_mmcif_regs *)CONFIG_SH_MMCIF_ADDR;
host->clk = CONFIG_SH_MMCIF_CLK;
mmc->priv = host;
mmc_register(mmc);
return ret;
}

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drivers/mmc/sh_mmcif.h Normal file
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/*
* MMCIF driver.
*
* Copyright (C) 2011 Renesas Solutions Corp.
*
* 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; either version 2 of the License.
*
*/
#ifndef _SH_MMCIF_H_
#define _SH_MMCIF_H_
struct sh_mmcif_regs {
unsigned long ce_cmd_set;
unsigned long reserved;
unsigned long ce_arg;
unsigned long ce_arg_cmd12;
unsigned long ce_cmd_ctrl;
unsigned long ce_block_set;
unsigned long ce_clk_ctrl;
unsigned long ce_buf_acc;
unsigned long ce_resp3;
unsigned long ce_resp2;
unsigned long ce_resp1;
unsigned long ce_resp0;
unsigned long ce_resp_cmd12;
unsigned long ce_data;
unsigned long reserved2[2];
unsigned long ce_int;
unsigned long ce_int_mask;
unsigned long ce_host_sts1;
unsigned long ce_host_sts2;
unsigned long reserved3[11];
unsigned long ce_version;
};
/* CE_CMD_SET */
#define CMD_MASK 0x3f000000
#define CMD_SET_RTYP_NO ((0 << 23) | (0 << 22))
/* R1/R1b/R3/R4/R5 */
#define CMD_SET_RTYP_6B ((0 << 23) | (1 << 22))
/* R2 */
#define CMD_SET_RTYP_17B ((1 << 23) | (0 << 22))
/* R1b */
#define CMD_SET_RBSY (1 << 21)
#define CMD_SET_CCSEN (1 << 20)
/* 1: on data, 0: no data */
#define CMD_SET_WDAT (1 << 19)
/* 1: write to card, 0: read from card */
#define CMD_SET_DWEN (1 << 18)
/* 1: multi block trans, 0: single */
#define CMD_SET_CMLTE (1 << 17)
/* 1: CMD12 auto issue */
#define CMD_SET_CMD12EN (1 << 16)
/* index check */
#define CMD_SET_RIDXC_INDEX ((0 << 15) | (0 << 14))
/* check bits check */
#define CMD_SET_RIDXC_BITS ((0 << 15) | (1 << 14))
/* no check */
#define CMD_SET_RIDXC_NO ((1 << 15) | (0 << 14))
/* 1: CRC7 check*/
#define CMD_SET_CRC7C ((0 << 13) | (0 << 12))
/* 1: check bits check*/
#define CMD_SET_CRC7C_BITS ((0 << 13) | (1 << 12))
/* 1: internal CRC7 check*/
#define CMD_SET_CRC7C_INTERNAL ((1 << 13) | (0 << 12))
/* 1: CRC16 check*/
#define CMD_SET_CRC16C (1 << 10)
/* 1: not receive CRC status */
#define CMD_SET_CRCSTE (1 << 8)
/* 1: tran mission bit "Low" */
#define CMD_SET_TBIT (1 << 7)
/* 1: open/drain */
#define CMD_SET_OPDM (1 << 6)
#define CMD_SET_CCSH (1 << 5)
/* 1bit */
#define CMD_SET_DATW_1 ((0 << 1) | (0 << 0))
/* 4bit */
#define CMD_SET_DATW_4 ((0 << 1) | (1 << 0))
/* 8bit */
#define CMD_SET_DATW_8 ((1 << 1) | (0 << 0))
/* CE_CMD_CTRL */
#define CMD_CTRL_BREAK (1 << 0)
/* CE_BLOCK_SET */
#define BLOCK_SIZE_MASK 0x0000ffff
/* CE_CLK_CTRL */
#define CLK_ENABLE (1 << 24)
#define CLK_CLEAR ((1 << 19) | (1 << 18) | (1 << 17) | (1 << 16))
#define CLK_PCLK ((1 << 19) | (1 << 18) | (1 << 17) | (1 << 16))
/* respons timeout */
#define SRSPTO_256 ((1 << 13) | (0 << 12))
/* respons busy timeout */
#define SRBSYTO_29 ((1 << 11) | (1 << 10) | (1 << 9) | (1 << 8))
/* read/write timeout */
#define SRWDTO_29 ((1 << 7) | (1 << 6) | (1 << 5) | (1 << 4))
/* ccs timeout */
#define SCCSTO_29 ((1 << 3) | (1 << 2) | (1 << 1) | (1 << 0))
/* CE_BUF_ACC */
#define BUF_ACC_DMAWEN (1 << 25)
#define BUF_ACC_DMAREN (1 << 24)
#define BUF_ACC_BUSW_32 (0 << 17)
#define BUF_ACC_BUSW_16 (1 << 17)
#define BUF_ACC_ATYP (1 << 16)
/* CE_INT */
#define INT_CCSDE (1 << 29)
#define INT_CMD12DRE (1 << 26)
#define INT_CMD12RBE (1 << 25)
#define INT_CMD12CRE (1 << 24)
#define INT_DTRANE (1 << 23)
#define INT_BUFRE (1 << 22)
#define INT_BUFWEN (1 << 21)
#define INT_BUFREN (1 << 20)
#define INT_CCSRCV (1 << 19)
#define INT_RBSYE (1 << 17)
#define INT_CRSPE (1 << 16)
#define INT_CMDVIO (1 << 15)
#define INT_BUFVIO (1 << 14)
#define INT_WDATERR (1 << 11)
#define INT_RDATERR (1 << 10)
#define INT_RIDXERR (1 << 9)
#define INT_RSPERR (1 << 8)
#define INT_CCSTO (1 << 5)
#define INT_CRCSTO (1 << 4)
#define INT_WDATTO (1 << 3)
#define INT_RDATTO (1 << 2)
#define INT_RBSYTO (1 << 1)
#define INT_RSPTO (1 << 0)
#define INT_ERR_STS (INT_CMDVIO | INT_BUFVIO | INT_WDATERR | \
INT_RDATERR | INT_RIDXERR | INT_RSPERR | \
INT_CCSTO | INT_CRCSTO | INT_WDATTO | \
INT_RDATTO | INT_RBSYTO | INT_RSPTO)
#define INT_START_MAGIC 0xD80430C0
/* CE_INT_MASK */
#define MASK_ALL 0x00000000
#define MASK_MCCSDE (1 << 29)
#define MASK_MCMD12DRE (1 << 26)
#define MASK_MCMD12RBE (1 << 25)
#define MASK_MCMD12CRE (1 << 24)
#define MASK_MDTRANE (1 << 23)
#define MASK_MBUFRE (1 << 22)
#define MASK_MBUFWEN (1 << 21)
#define MASK_MBUFREN (1 << 20)
#define MASK_MCCSRCV (1 << 19)
#define MASK_MRBSYE (1 << 17)
#define MASK_MCRSPE (1 << 16)
#define MASK_MCMDVIO (1 << 15)
#define MASK_MBUFVIO (1 << 14)
#define MASK_MWDATERR (1 << 11)
#define MASK_MRDATERR (1 << 10)
#define MASK_MRIDXERR (1 << 9)
#define MASK_MRSPERR (1 << 8)
#define MASK_MCCSTO (1 << 5)
#define MASK_MCRCSTO (1 << 4)
#define MASK_MWDATTO (1 << 3)
#define MASK_MRDATTO (1 << 2)
#define MASK_MRBSYTO (1 << 1)
#define MASK_MRSPTO (1 << 0)
/* CE_HOST_STS1 */
#define STS1_CMDSEQ (1 << 31)
/* CE_HOST_STS2 */
#define STS2_CRCSTE (1 << 31)
#define STS2_CRC16E (1 << 30)
#define STS2_AC12CRCE (1 << 29)
#define STS2_RSPCRC7E (1 << 28)
#define STS2_CRCSTEBE (1 << 27)
#define STS2_RDATEBE (1 << 26)
#define STS2_AC12REBE (1 << 25)
#define STS2_RSPEBE (1 << 24)
#define STS2_AC12IDXE (1 << 23)
#define STS2_RSPIDXE (1 << 22)
#define STS2_CCSTO (1 << 15)
#define STS2_RDATTO (1 << 14)
#define STS2_DATBSYTO (1 << 13)
#define STS2_CRCSTTO (1 << 12)
#define STS2_AC12BSYTO (1 << 11)
#define STS2_RSPBSYTO (1 << 10)
#define STS2_AC12RSPTO (1 << 9)
#define STS2_RSPTO (1 << 8)
#define STS2_CRC_ERR (STS2_CRCSTE | STS2_CRC16E | \
STS2_AC12CRCE | STS2_RSPCRC7E | STS2_CRCSTEBE)
#define STS2_TIMEOUT_ERR (STS2_CCSTO | STS2_RDATTO | \
STS2_DATBSYTO | STS2_CRCSTTO | \
STS2_AC12BSYTO | STS2_RSPBSYTO | \
STS2_AC12RSPTO | STS2_RSPTO)
/* CE_VERSION */
#define SOFT_RST_ON (1 << 31)
#define SOFT_RST_OFF (0 << 31)
#define CLKDEV_EMMC_DATA 52000000 /* 52MHz */
#define CLKDEV_MMC_INIT 400000 /* 100 - 400 KHz */
#define MMC_BUS_WIDTH_1 0
#define MMC_BUS_WIDTH_4 2
#define MMC_BUS_WIDTH_8 3
struct sh_mmcif_host {
struct mmc_data *data;
struct sh_mmcif_regs *regs;
unsigned int clk;
int bus_width;
u16 wait_int;
u16 sd_error;
u8 last_cmd;
};
static inline u32 sh_mmcif_read(unsigned long *reg)
{
return readl(reg);
}
static inline void sh_mmcif_write(u32 val, unsigned long *reg)
{
writel(val, reg);
}
static inline void sh_mmcif_bitset(u32 val, unsigned long *reg)
{
sh_mmcif_write(val | sh_mmcif_read(reg), reg);
}
static inline void sh_mmcif_bitclr(u32 val, unsigned long *reg)
{
sh_mmcif_write(~val & sh_mmcif_read(reg), reg);
}
#endif /* _SH_MMCIF_H_ */

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drivers/mmc/tegra2_mmc.c Normal file
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/*
* (C) Copyright 2009 SAMSUNG Electronics
* Minkyu Kang <mk7.kang@samsung.com>
* Jaehoon Chung <jh80.chung@samsung.com>
* Portions Copyright 2011 NVIDIA Corporation
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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
*/
#include <common.h>
#include <mmc.h>
#include <asm/io.h>
#include <asm/arch/clk_rst.h>
#include "tegra2_mmc.h"
/* support 4 mmc hosts */
struct mmc mmc_dev[4];
struct mmc_host mmc_host[4];
static inline struct tegra2_mmc *tegra2_get_base_mmc(int dev_index)
{
unsigned long offset;
debug("tegra2_get_base_mmc: dev_index = %d\n", dev_index);
switch (dev_index) {
case 0:
offset = TEGRA2_SDMMC4_BASE;
break;
case 1:
offset = TEGRA2_SDMMC3_BASE;
break;
case 2:
offset = TEGRA2_SDMMC2_BASE;
break;
case 3:
offset = TEGRA2_SDMMC1_BASE;
break;
default:
offset = TEGRA2_SDMMC4_BASE;
break;
}
return (struct tegra2_mmc *)(offset);
}
static void mmc_prepare_data(struct mmc_host *host, struct mmc_data *data)
{
unsigned char ctrl;
debug("data->dest: %08X, data->blocks: %u, data->blocksize: %u\n",
(u32)data->dest, data->blocks, data->blocksize);
writel((u32)data->dest, &host->reg->sysad);
/*
* DMASEL[4:3]
* 00 = Selects SDMA
* 01 = Reserved
* 10 = Selects 32-bit Address ADMA2
* 11 = Selects 64-bit Address ADMA2
*/
ctrl = readb(&host->reg->hostctl);
ctrl &= ~(3 << 3); /* SDMA */
writeb(ctrl, &host->reg->hostctl);
/* We do not handle DMA boundaries, so set it to max (512 KiB) */
writew((7 << 12) | (data->blocksize & 0xFFF), &host->reg->blksize);
writew(data->blocks, &host->reg->blkcnt);
}
static void mmc_set_transfer_mode(struct mmc_host *host, struct mmc_data *data)
{
unsigned short mode;
debug(" mmc_set_transfer_mode called\n");
/*
* TRNMOD
* MUL1SIN0[5] : Multi/Single Block Select
* RD1WT0[4] : Data Transfer Direction Select
* 1 = read
* 0 = write
* ENACMD12[2] : Auto CMD12 Enable
* ENBLKCNT[1] : Block Count Enable
* ENDMA[0] : DMA Enable
*/
mode = (1 << 1) | (1 << 0);
if (data->blocks > 1)
mode |= (1 << 5);
if (data->flags & MMC_DATA_READ)
mode |= (1 << 4);
writew(mode, &host->reg->trnmod);
}
static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
struct mmc_data *data)
{
struct mmc_host *host = (struct mmc_host *)mmc->priv;
int flags, i;
unsigned int timeout;
unsigned int mask;
unsigned int retry = 0x100000;
debug(" mmc_send_cmd called\n");
/* Wait max 10 ms */
timeout = 10;
/*
* PRNSTS
* CMDINHDAT[1] : Command Inhibit (DAT)
* CMDINHCMD[0] : Command Inhibit (CMD)
*/
mask = (1 << 0);
if ((data != NULL) || (cmd->resp_type & MMC_RSP_BUSY))
mask |= (1 << 1);
/*
* We shouldn't wait for data inhibit for stop commands, even
* though they might use busy signaling
*/
if (data)
mask &= ~(1 << 1);
while (readl(&host->reg->prnsts) & mask) {
if (timeout == 0) {
printf("%s: timeout error\n", __func__);
return -1;
}
timeout--;
udelay(1000);
}
if (data)
mmc_prepare_data(host, data);
debug("cmd->arg: %08x\n", cmd->cmdarg);
writel(cmd->cmdarg, &host->reg->argument);
if (data)
mmc_set_transfer_mode(host, data);
if ((cmd->resp_type & MMC_RSP_136) && (cmd->resp_type & MMC_RSP_BUSY))
return -1;
/*
* CMDREG
* CMDIDX[13:8] : Command index
* DATAPRNT[5] : Data Present Select
* ENCMDIDX[4] : Command Index Check Enable
* ENCMDCRC[3] : Command CRC Check Enable
* RSPTYP[1:0]
* 00 = No Response
* 01 = Length 136
* 10 = Length 48
* 11 = Length 48 Check busy after response
*/
if (!(cmd->resp_type & MMC_RSP_PRESENT))
flags = 0;
else if (cmd->resp_type & MMC_RSP_136)
flags = (1 << 0);
else if (cmd->resp_type & MMC_RSP_BUSY)
flags = (3 << 0);
else
flags = (2 << 0);
if (cmd->resp_type & MMC_RSP_CRC)
flags |= (1 << 3);
if (cmd->resp_type & MMC_RSP_OPCODE)
flags |= (1 << 4);
if (data)
flags |= (1 << 5);
debug("cmd: %d\n", cmd->cmdidx);
writew((cmd->cmdidx << 8) | flags, &host->reg->cmdreg);
for (i = 0; i < retry; i++) {
mask = readl(&host->reg->norintsts);
/* Command Complete */
if (mask & (1 << 0)) {
if (!data)
writel(mask, &host->reg->norintsts);
break;
}
}
if (i == retry) {
printf("%s: waiting for status update\n", __func__);
return TIMEOUT;
}
if (mask & (1 << 16)) {
/* Timeout Error */
debug("timeout: %08x cmd %d\n", mask, cmd->cmdidx);
return TIMEOUT;
} else if (mask & (1 << 15)) {
/* Error Interrupt */
debug("error: %08x cmd %d\n", mask, cmd->cmdidx);
return -1;
}
if (cmd->resp_type & MMC_RSP_PRESENT) {
if (cmd->resp_type & MMC_RSP_136) {
/* CRC is stripped so we need to do some shifting. */
for (i = 0; i < 4; i++) {
unsigned int offset =
(unsigned int)(&host->reg->rspreg3 - i);
cmd->response[i] = readl(offset) << 8;
if (i != 3) {
cmd->response[i] |=
readb(offset - 1);
}
debug("cmd->resp[%d]: %08x\n",
i, cmd->response[i]);
}
} else if (cmd->resp_type & MMC_RSP_BUSY) {
for (i = 0; i < retry; i++) {
/* PRNTDATA[23:20] : DAT[3:0] Line Signal */
if (readl(&host->reg->prnsts)
& (1 << 20)) /* DAT[0] */
break;
}
if (i == retry) {
printf("%s: card is still busy\n", __func__);
return TIMEOUT;
}
cmd->response[0] = readl(&host->reg->rspreg0);
debug("cmd->resp[0]: %08x\n", cmd->response[0]);
} else {
cmd->response[0] = readl(&host->reg->rspreg0);
debug("cmd->resp[0]: %08x\n", cmd->response[0]);
}
}
if (data) {
while (1) {
mask = readl(&host->reg->norintsts);
if (mask & (1 << 15)) {
/* Error Interrupt */
writel(mask, &host->reg->norintsts);
printf("%s: error during transfer: 0x%08x\n",
__func__, mask);
return -1;
} else if (mask & (1 << 3)) {
/* DMA Interrupt */
debug("DMA end\n");
break;
} else if (mask & (1 << 1)) {
/* Transfer Complete */
debug("r/w is done\n");
break;
}
}
writel(mask, &host->reg->norintsts);
}
udelay(1000);
return 0;
}
static void mmc_change_clock(struct mmc_host *host, uint clock)
{
int div, hw_div;
unsigned short clk;
unsigned long timeout;
unsigned int reg, hostbase;
struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
debug(" mmc_change_clock called\n");
/* Change Tegra2 SDMMCx clock divisor here */
/* Source is 216MHz, PLLP_OUT0 */
if (clock == 0)
goto out;
div = 1;
if (clock <= 400000) {
hw_div = ((9-1)<<1); /* Best match is 375KHz */
div = 64;
} else if (clock <= 20000000)
hw_div = ((11-1)<<1); /* Best match is 19.6MHz */
else if (clock <= 26000000)
hw_div = ((9-1)<<1); /* Use 24MHz */
else
hw_div = ((4-1)<<1) + 1; /* 4.5 divisor for 48MHz */
debug("mmc_change_clock: hw_div = %d, card clock div = %d\n",
hw_div, div);
/* Change SDMMCx divisor */
hostbase = readl(&host->base);
debug("mmc_change_clock: hostbase = %08X\n", hostbase);
if (hostbase == TEGRA2_SDMMC1_BASE) {
reg = readl(&clkrst->crc_clk_src_sdmmc1);
reg &= 0xFFFFFF00; /* divisor (7.1) = 00 */
reg |= hw_div; /* n-1 */
writel(reg, &clkrst->crc_clk_src_sdmmc1);
} else if (hostbase == TEGRA2_SDMMC2_BASE) {
reg = readl(&clkrst->crc_clk_src_sdmmc2);
reg &= 0xFFFFFF00; /* divisor (7.1) = 00 */
reg |= hw_div; /* n-1 */
writel(reg, &clkrst->crc_clk_src_sdmmc2);
} else if (hostbase == TEGRA2_SDMMC3_BASE) {
reg = readl(&clkrst->crc_clk_src_sdmmc3);
reg &= 0xFFFFFF00; /* divisor (7.1) = 00 */
reg |= hw_div; /* n-1 */
writel(reg, &clkrst->crc_clk_src_sdmmc3);
} else {
reg = readl(&clkrst->crc_clk_src_sdmmc4);
reg &= 0xFFFFFF00; /* divisor (7.1) = 00 */
reg |= hw_div; /* n-1 */
writel(reg, &clkrst->crc_clk_src_sdmmc4);
}
writew(0, &host->reg->clkcon);
div >>= 1;
/*
* CLKCON
* SELFREQ[15:8] : base clock divided by value
* ENSDCLK[2] : SD Clock Enable
* STBLINTCLK[1] : Internal Clock Stable
* ENINTCLK[0] : Internal Clock Enable
*/
clk = (div << 8) | (1 << 0);
writew(clk, &host->reg->clkcon);
/* Wait max 10 ms */
timeout = 10;
while (!(readw(&host->reg->clkcon) & (1 << 1))) {
if (timeout == 0) {
printf("%s: timeout error\n", __func__);
return;
}
timeout--;
udelay(1000);
}
clk |= (1 << 2);
writew(clk, &host->reg->clkcon);
debug("mmc_change_clock: clkcon = %08X\n", clk);
debug("mmc_change_clock: CLK_SOURCE_SDMMCx = %08X\n", reg);
out:
host->clock = clock;
}
static void mmc_set_ios(struct mmc *mmc)
{
struct mmc_host *host = mmc->priv;
unsigned char ctrl;
debug(" mmc_set_ios called\n");
debug("bus_width: %x, clock: %d\n", mmc->bus_width, mmc->clock);
/* Change clock first */
mmc_change_clock(host, mmc->clock);
ctrl = readb(&host->reg->hostctl);
/*
* WIDE8[5]
* 0 = Depend on WIDE4
* 1 = 8-bit mode
* WIDE4[1]
* 1 = 4-bit mode
* 0 = 1-bit mode
*/
if (mmc->bus_width == 8)
ctrl |= (1 << 5);
else if (mmc->bus_width == 4)
ctrl |= (1 << 1);
else
ctrl &= ~(1 << 1);
writeb(ctrl, &host->reg->hostctl);
debug("mmc_set_ios: hostctl = %08X\n", ctrl);
}
static void mmc_reset(struct mmc_host *host)
{
unsigned int timeout;
debug(" mmc_reset called\n");
/*
* RSTALL[0] : Software reset for all
* 1 = reset
* 0 = work
*/
writeb((1 << 0), &host->reg->swrst);
host->clock = 0;
/* Wait max 100 ms */
timeout = 100;
/* hw clears the bit when it's done */
while (readb(&host->reg->swrst) & (1 << 0)) {
if (timeout == 0) {
printf("%s: timeout error\n", __func__);
return;
}
timeout--;
udelay(1000);
}
}
static int mmc_core_init(struct mmc *mmc)
{
struct mmc_host *host = (struct mmc_host *)mmc->priv;
unsigned int mask;
debug(" mmc_core_init called\n");
mmc_reset(host);
host->version = readw(&host->reg->hcver);
debug("host version = %x\n", host->version);
/* mask all */
writel(0xffffffff, &host->reg->norintstsen);
writel(0xffffffff, &host->reg->norintsigen);
writeb(0xe, &host->reg->timeoutcon); /* TMCLK * 2^27 */
/*
* NORMAL Interrupt Status Enable Register init
* [5] ENSTABUFRDRDY : Buffer Read Ready Status Enable
* [4] ENSTABUFWTRDY : Buffer write Ready Status Enable
* [1] ENSTASTANSCMPLT : Transfre Complete Status Enable
* [0] ENSTACMDCMPLT : Command Complete Status Enable
*/
mask = readl(&host->reg->norintstsen);
mask &= ~(0xffff);
mask |= (1 << 5) | (1 << 4) | (1 << 1) | (1 << 0);
writel(mask, &host->reg->norintstsen);
/*
* NORMAL Interrupt Signal Enable Register init
* [1] ENSTACMDCMPLT : Transfer Complete Signal Enable
*/
mask = readl(&host->reg->norintsigen);
mask &= ~(0xffff);
mask |= (1 << 1);
writel(mask, &host->reg->norintsigen);
return 0;
}
static int tegra2_mmc_initialize(int dev_index, int bus_width)
{
struct mmc *mmc;
debug(" mmc_initialize called\n");
mmc = &mmc_dev[dev_index];
sprintf(mmc->name, "Tegra2 SD/MMC");
mmc->priv = &mmc_host[dev_index];
mmc->send_cmd = mmc_send_cmd;
mmc->set_ios = mmc_set_ios;
mmc->init = mmc_core_init;
mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
if (bus_width == 8)
mmc->host_caps = MMC_MODE_8BIT;
else
mmc->host_caps = MMC_MODE_4BIT;
mmc->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
/*
* min freq is for card identification, and is the highest
* low-speed SDIO card frequency (actually 400KHz)
* max freq is highest HS eMMC clock as per the SD/MMC spec
* (actually 52MHz)
* Both of these are the closest equivalents w/216MHz source
* clock and Tegra2 SDMMC divisors.
*/
mmc->f_min = 375000;
mmc->f_max = 48000000;
mmc_host[dev_index].clock = 0;
mmc_host[dev_index].reg = tegra2_get_base_mmc(dev_index);
mmc_host[dev_index].base = (unsigned int)mmc_host[dev_index].reg;
mmc_register(mmc);
return 0;
}
int tegra2_mmc_init(int dev_index, int bus_width)
{
debug(" tegra2_mmc_init: index %d, bus width %d\n",
dev_index, bus_width);
return tegra2_mmc_initialize(dev_index, bus_width);
}

81
drivers/mmc/tegra2_mmc.h Normal file
View File

@ -0,0 +1,81 @@
/*
* (C) Copyright 2009 SAMSUNG Electronics
* Minkyu Kang <mk7.kang@samsung.com>
* Portions Copyright (C) 2011 NVIDIA Corporation
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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 __TEGRA2_MMC_H_
#define __TEGRA2_MMC_H_
#define TEGRA2_SDMMC1_BASE 0xC8000000
#define TEGRA2_SDMMC2_BASE 0xC8000200
#define TEGRA2_SDMMC3_BASE 0xC8000400
#define TEGRA2_SDMMC4_BASE 0xC8000600
#ifndef __ASSEMBLY__
struct tegra2_mmc {
unsigned int sysad; /* _SYSTEM_ADDRESS_0 */
unsigned short blksize; /* _BLOCK_SIZE_BLOCK_COUNT_0 15:00 */
unsigned short blkcnt; /* _BLOCK_SIZE_BLOCK_COUNT_0 31:16 */
unsigned int argument; /* _ARGUMENT_0 */
unsigned short trnmod; /* _CMD_XFER_MODE_0 15:00 xfer mode */
unsigned short cmdreg; /* _CMD_XFER_MODE_0 31:16 cmd reg */
unsigned int rspreg0; /* _RESPONSE_R0_R1_0 CMD RESP 31:00 */
unsigned int rspreg1; /* _RESPONSE_R2_R3_0 CMD RESP 63:32 */
unsigned int rspreg2; /* _RESPONSE_R4_R5_0 CMD RESP 95:64 */
unsigned int rspreg3; /* _RESPONSE_R6_R7_0 CMD RESP 127:96 */
unsigned int bdata; /* _BUFFER_DATA_PORT_0 */
unsigned int prnsts; /* _PRESENT_STATE_0 */
unsigned char hostctl; /* _POWER_CONTROL_HOST_0 7:00 */
unsigned char pwrcon; /* _POWER_CONTROL_HOST_0 15:8 */
unsigned char blkgap; /* _POWER_CONTROL_HOST_9 23:16 */
unsigned char wakcon; /* _POWER_CONTROL_HOST_0 31:24 */
unsigned short clkcon; /* _CLOCK_CONTROL_0 15:00 */
unsigned char timeoutcon; /* _TIMEOUT_CTRL 23:16 */
unsigned char swrst; /* _SW_RESET_ 31:24 */
unsigned int norintsts; /* _INTERRUPT_STATUS_0 */
unsigned int norintstsen; /* _INTERRUPT_STATUS_ENABLE_0 */
unsigned int norintsigen; /* _INTERRUPT_SIGNAL_ENABLE_0 */
unsigned short acmd12errsts; /* _AUTO_CMD12_ERR_STATUS_0 15:00 */
unsigned char res1[2]; /* _RESERVED 31:16 */
unsigned int capareg; /* _CAPABILITIES_0 */
unsigned char res2[4]; /* RESERVED, offset 44h-47h */
unsigned int maxcurr; /* _MAXIMUM_CURRENT_0 */
unsigned char res3[4]; /* RESERVED, offset 4Ch-4Fh */
unsigned short setacmd12err; /* offset 50h */
unsigned short setinterr; /* offset 52h */
unsigned char admaerr; /* offset 54h */
unsigned char res4[3]; /* RESERVED, offset 55h-57h */
unsigned long admaaddr; /* offset 58h-5Fh */
unsigned char res5[0x9c]; /* RESERVED, offset 60h-FBh */
unsigned short slotintstatus; /* offset FCh */
unsigned short hcver; /* HOST Version */
unsigned char res6[0x100]; /* RESERVED, offset 100h-1FFh */
};
struct mmc_host {
struct tegra2_mmc *reg;
unsigned int version; /* SDHCI spec. version */
unsigned int clock; /* Current clock (MHz) */
unsigned int base; /* Base address, SDMMC1/2/3/4 */
};
int tegra2_mmc_init(int dev_index, int bus_width);
#endif /* __ASSEMBLY__ */
#endif /* __TEGRA2_MMC_H_ */

11
include/configs/harmony.h
View File

@ -47,4 +47,15 @@
#define CONFIG_SYS_BOARD_ODMDATA 0x300d8011 /* lp1, 1GB */
#define CONFIG_BOARD_EARLY_INIT_F
/* SD/MMC */
#define CONFIG_MMC
#define CONFIG_GENERIC_MMC
#define CONFIG_TEGRA2_MMC
#define CONFIG_CMD_MMC
#define CONFIG_DOS_PARTITION
#define CONFIG_EFI_PARTITION
#define CONFIG_CMD_EXT2
#define CONFIG_CMD_FAT
#endif /* __CONFIG_H */

11
include/configs/seaboard.h
View File

@ -41,4 +41,15 @@
#define CONFIG_SYS_BOARD_ODMDATA 0x300d8011 /* lp1, 1GB */
#define CONFIG_BOARD_EARLY_INIT_F
/* SD/MMC */
#define CONFIG_MMC
#define CONFIG_GENERIC_MMC
#define CONFIG_TEGRA2_MMC
#define CONFIG_CMD_MMC
#define CONFIG_DOS_PARTITION
#define CONFIG_EFI_PARTITION
#define CONFIG_CMD_EXT2
#define CONFIG_CMD_FAT
#endif /* __CONFIG_H */

9
include/mmc.h
View File

@ -45,6 +45,7 @@
#define MMC_MODE_4BIT 0x100
#define MMC_MODE_8BIT 0x200
#define MMC_MODE_SPI 0x400
#define MMC_MODE_HC 0x800
#define SD_DATA_4BIT 0x00040000
@ -75,6 +76,9 @@
#define MMC_CMD_READ_MULTIPLE_BLOCK 18
#define MMC_CMD_WRITE_SINGLE_BLOCK 24
#define MMC_CMD_WRITE_MULTIPLE_BLOCK 25
#define MMC_CMD_ERASE_GROUP_START 35
#define MMC_CMD_ERASE_GROUP_END 36
#define MMC_CMD_ERASE 38
#define MMC_CMD_APP_CMD 55
#define MMC_CMD_SPI_READ_OCR 58
#define MMC_CMD_SPI_CRC_ON_OFF 59
@ -84,6 +88,8 @@
#define SD_CMD_SEND_IF_COND 8
#define SD_CMD_APP_SET_BUS_WIDTH 6
#define SD_CMD_ERASE_WR_BLK_START 32
#define SD_CMD_ERASE_WR_BLK_END 33
#define SD_CMD_APP_SEND_OP_COND 41
#define SD_CMD_APP_SEND_SCR 51
@ -99,6 +105,8 @@
#define OCR_VOLTAGE_MASK 0x007FFF80
#define OCR_ACCESS_MODE 0x60000000
#define SECURE_ERASE 0x80000000
#define MMC_STATUS_MASK (~0x0206BF7F)
#define MMC_STATUS_RDY_FOR_DATA (1 << 8)
#define MMC_STATUS_CURR_STATE (0xf << 9)
@ -285,6 +293,7 @@ struct mmc {
uint tran_speed;
uint read_bl_len;
uint write_bl_len;
uint erase_grp_size;
u64 capacity;
block_dev_desc_t block_dev;
int (*send_cmd)(struct mmc *mmc,

3
include/part.h
View File

@ -49,6 +49,9 @@ typedef struct block_dev_desc {
unsigned long start,
lbaint_t blkcnt,
const void *buffer);
unsigned long (*block_erase)(int dev,
unsigned long start,
lbaint_t blkcnt);
void *priv; /* driver private struct pointer */
}block_dev_desc_t;

325
include/sdhci.h Normal file
View File

@ -0,0 +1,325 @@
/*
* Copyright 2011, Marvell Semiconductor Inc.
* Lei Wen <leiwen@marvell.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; either version 2 of
* the License, or (at your option) any later version.
*
* 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
*
* Back ported to the 8xx platform (from the 8260 platform) by
* Murray.Jensen@cmst.csiro.au, 27-Jan-01.
*/
#ifndef __SDHCI_HW_H
#define __SDHCI_HW_H
#include <asm/io.h>
/*
* Controller registers
*/
#define SDHCI_DMA_ADDRESS 0x00
#define SDHCI_BLOCK_SIZE 0x04
#define SDHCI_MAKE_BLKSZ(dma, blksz) (((dma & 0x7) << 12) | (blksz & 0xFFF))
#define SDHCI_BLOCK_COUNT 0x06
#define SDHCI_ARGUMENT 0x08
#define SDHCI_TRANSFER_MODE 0x0C
#define SDHCI_TRNS_DMA 0x01
#define SDHCI_TRNS_BLK_CNT_EN 0x02
#define SDHCI_TRNS_ACMD12 0x04
#define SDHCI_TRNS_READ 0x10
#define SDHCI_TRNS_MULTI 0x20
#define SDHCI_COMMAND 0x0E
#define SDHCI_CMD_RESP_MASK 0x03
#define SDHCI_CMD_CRC 0x08
#define SDHCI_CMD_INDEX 0x10
#define SDHCI_CMD_DATA 0x20
#define SDHCI_CMD_ABORTCMD 0xC0
#define SDHCI_CMD_RESP_NONE 0x00
#define SDHCI_CMD_RESP_LONG 0x01
#define SDHCI_CMD_RESP_SHORT 0x02
#define SDHCI_CMD_RESP_SHORT_BUSY 0x03
#define SDHCI_MAKE_CMD(c, f) (((c & 0xff) << 8) | (f & 0xff))
#define SDHCI_GET_CMD(c) ((c>>8) & 0x3f)
#define SDHCI_RESPONSE 0x10
#define SDHCI_BUFFER 0x20
#define SDHCI_PRESENT_STATE 0x24
#define SDHCI_CMD_INHIBIT 0x00000001
#define SDHCI_DATA_INHIBIT 0x00000002
#define SDHCI_DOING_WRITE 0x00000100
#define SDHCI_DOING_READ 0x00000200
#define SDHCI_SPACE_AVAILABLE 0x00000400
#define SDHCI_DATA_AVAILABLE 0x00000800
#define SDHCI_CARD_PRESENT 0x00010000
#define SDHCI_WRITE_PROTECT 0x00080000
#define SDHCI_HOST_CONTROL 0x28
#define SDHCI_CTRL_LED 0x01
#define SDHCI_CTRL_4BITBUS 0x02
#define SDHCI_CTRL_HISPD 0x04
#define SDHCI_CTRL_DMA_MASK 0x18
#define SDHCI_CTRL_SDMA 0x00
#define SDHCI_CTRL_ADMA1 0x08
#define SDHCI_CTRL_ADMA32 0x10
#define SDHCI_CTRL_ADMA64 0x18
#define SDHCI_CTRL_8BITBUS 0x20
#define SDHCI_POWER_CONTROL 0x29
#define SDHCI_POWER_ON 0x01
#define SDHCI_POWER_180 0x0A
#define SDHCI_POWER_300 0x0C
#define SDHCI_POWER_330 0x0E
#define SDHCI_BLOCK_GAP_CONTROL 0x2A
#define SDHCI_WAKE_UP_CONTROL 0x2B
#define SDHCI_WAKE_ON_INT 0x01
#define SDHCI_WAKE_ON_INSERT 0x02
#define SDHCI_WAKE_ON_REMOVE 0x04
#define SDHCI_CLOCK_CONTROL 0x2C
#define SDHCI_DIVIDER_SHIFT 8
#define SDHCI_DIVIDER_HI_SHIFT 6
#define SDHCI_DIV_MASK 0xFF
#define SDHCI_DIV_MASK_LEN 8
#define SDHCI_DIV_HI_MASK 0x300
#define SDHCI_CLOCK_CARD_EN 0x0004
#define SDHCI_CLOCK_INT_STABLE 0x0002
#define SDHCI_CLOCK_INT_EN 0x0001
#define SDHCI_TIMEOUT_CONTROL 0x2E
#define SDHCI_SOFTWARE_RESET 0x2F
#define SDHCI_RESET_ALL 0x01
#define SDHCI_RESET_CMD 0x02
#define SDHCI_RESET_DATA 0x04
#define SDHCI_INT_STATUS 0x30
#define SDHCI_INT_ENABLE 0x34
#define SDHCI_SIGNAL_ENABLE 0x38
#define SDHCI_INT_RESPONSE 0x00000001
#define SDHCI_INT_DATA_END 0x00000002
#define SDHCI_INT_DMA_END 0x00000008
#define SDHCI_INT_SPACE_AVAIL 0x00000010
#define SDHCI_INT_DATA_AVAIL 0x00000020
#define SDHCI_INT_CARD_INSERT 0x00000040
#define SDHCI_INT_CARD_REMOVE 0x00000080
#define SDHCI_INT_CARD_INT 0x00000100
#define SDHCI_INT_ERROR 0x00008000
#define SDHCI_INT_TIMEOUT 0x00010000
#define SDHCI_INT_CRC 0x00020000
#define SDHCI_INT_END_BIT 0x00040000
#define SDHCI_INT_INDEX 0x00080000
#define SDHCI_INT_DATA_TIMEOUT 0x00100000
#define SDHCI_INT_DATA_CRC 0x00200000
#define SDHCI_INT_DATA_END_BIT 0x00400000
#define SDHCI_INT_BUS_POWER 0x00800000
#define SDHCI_INT_ACMD12ERR 0x01000000
#define SDHCI_INT_ADMA_ERROR 0x02000000
#define SDHCI_INT_NORMAL_MASK 0x00007FFF
#define SDHCI_INT_ERROR_MASK 0xFFFF8000
#define SDHCI_INT_CMD_MASK (SDHCI_INT_RESPONSE | SDHCI_INT_TIMEOUT | \
SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX)
#define SDHCI_INT_DATA_MASK (SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \
SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \
SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \
SDHCI_INT_DATA_END_BIT | SDHCI_INT_ADMA_ERROR)
#define SDHCI_INT_ALL_MASK ((unsigned int)-1)
#define SDHCI_ACMD12_ERR 0x3C
/* 3E-3F reserved */
#define SDHCI_CAPABILITIES 0x40
#define SDHCI_TIMEOUT_CLK_MASK 0x0000003F
#define SDHCI_TIMEOUT_CLK_SHIFT 0
#define SDHCI_TIMEOUT_CLK_UNIT 0x00000080
#define SDHCI_CLOCK_BASE_MASK 0x00003F00
#define SDHCI_CLOCK_V3_BASE_MASK 0x0000FF00
#define SDHCI_CLOCK_BASE_SHIFT 8
#define SDHCI_MAX_BLOCK_MASK 0x00030000
#define SDHCI_MAX_BLOCK_SHIFT 16
#define SDHCI_CAN_DO_8BIT 0x00040000
#define SDHCI_CAN_DO_ADMA2 0x00080000
#define SDHCI_CAN_DO_ADMA1 0x00100000
#define SDHCI_CAN_DO_HISPD 0x00200000
#define SDHCI_CAN_DO_SDMA 0x00400000
#define SDHCI_CAN_VDD_330 0x01000000
#define SDHCI_CAN_VDD_300 0x02000000
#define SDHCI_CAN_VDD_180 0x04000000
#define SDHCI_CAN_64BIT 0x10000000
#define SDHCI_CAPABILITIES_1 0x44
#define SDHCI_MAX_CURRENT 0x48
/* 4C-4F reserved for more max current */
#define SDHCI_SET_ACMD12_ERROR 0x50
#define SDHCI_SET_INT_ERROR 0x52
#define SDHCI_ADMA_ERROR 0x54
/* 55-57 reserved */
#define SDHCI_ADMA_ADDRESS 0x58
/* 60-FB reserved */
#define SDHCI_SLOT_INT_STATUS 0xFC
#define SDHCI_HOST_VERSION 0xFE
#define SDHCI_VENDOR_VER_MASK 0xFF00
#define SDHCI_VENDOR_VER_SHIFT 8
#define SDHCI_SPEC_VER_MASK 0x00FF
#define SDHCI_SPEC_VER_SHIFT 0
#define SDHCI_SPEC_100 0
#define SDHCI_SPEC_200 1
#define SDHCI_SPEC_300 2
/*
* End of controller registers.
*/
#define SDHCI_MAX_DIV_SPEC_200 256
#define SDHCI_MAX_DIV_SPEC_300 2046
/*
* quirks
*/
#define SDHCI_QUIRK_32BIT_DMA_ADDR (1 << 0)
/*
* Host SDMA buffer boundary. Valid values from 4K to 512K in powers of 2.
*/
#define SDHCI_DEFAULT_BOUNDARY_SIZE (512 * 1024)
#define SDHCI_DEFAULT_BOUNDARY_ARG (7)
struct sdhci_ops {
#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
u32 (*read_l)(struct sdhci_host *host, int reg);
u16 (*read_w)(struct sdhci_host *host, int reg);
u8 (*read_b)(struct sdhci_host *host, int reg);
void (*write_l)(struct sdhci_host *host, u32 val, int reg);
void (*write_w)(struct sdhci_host *host, u16 val, int reg);
void (*write_b)(struct sdhci_host *host, u8 val, int reg);
#endif
};
struct sdhci_host {
char *name;
void *ioaddr;
unsigned int quirks;
unsigned int version;
unsigned int clock;
const struct sdhci_ops *ops;
};
#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
{
if (unlikely(host->ops->write_l))
host->ops->write_l(host, val, reg);
else
writel(val, host->ioaddr + reg);
}
static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
{
if (unlikely(host->ops->write_w))
host->ops->write_w(host, val, reg);
else
writew(val, host->ioaddr + reg);
}
static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
{
if (unlikely(host->ops->write_b))
host->ops->write_b(host, val, reg);
else
writeb(val, host->ioaddr + reg);
}
static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
{
if (unlikely(host->ops->read_l))
return host->ops->read_l(host, reg);
else
return readl(host->ioaddr + reg);
}
static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
{
if (unlikely(host->ops->read_w))
return host->ops->read_w(host, reg);
else
return readw(host->ioaddr + reg);
}
static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
{
if (unlikely(host->ops->read_b))
return host->ops->read_b(host, reg);
else
return readb(host->ioaddr + reg);
}
#else
static inline void sdhci_writel(struct sdhci_host *host, u32 val, int reg)
{
writel(val, host->ioaddr + reg);
}
static inline void sdhci_writew(struct sdhci_host *host, u16 val, int reg)
{
writew(val, host->ioaddr + reg);
}
static inline void sdhci_writeb(struct sdhci_host *host, u8 val, int reg)
{
writeb(val, host->ioaddr + reg);
}
static inline u32 sdhci_readl(struct sdhci_host *host, int reg)
{
return readl(host->ioaddr + reg);
}
static inline u16 sdhci_readw(struct sdhci_host *host, int reg)
{
return readw(host->ioaddr + reg);
}
static inline u8 sdhci_readb(struct sdhci_host *host, int reg)
{
return readb(host->ioaddr + reg);
}
#endif
int add_sdhci(struct sdhci_host *host, u32 max_clk, u32 min_clk);
#endif /* __SDHCI_HW_H */