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-rw-r--r--drivers/mmc/Makefile4
-rw-r--r--drivers/mmc/atmel_mci.h9
-rw-r--r--drivers/mmc/gen_atmel_mci.c4
-rw-r--r--drivers/mmc/mmc.c121
-rw-r--r--drivers/mmc/mv_sdhci.c21
-rw-r--r--drivers/mmc/s5p_mmc.c2
-rw-r--r--drivers/mmc/sdhci.c433
-rw-r--r--drivers/mmc/sh_mmcif.c608
-rw-r--r--drivers/mmc/sh_mmcif.h238
-rw-r--r--drivers/mmc/tegra2_mmc.c510
-rw-r--r--drivers/mmc/tegra2_mmc.h81
11 files changed, 2025 insertions, 6 deletions
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index a8fe17a..3968c14 100644
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -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)
diff --git a/drivers/mmc/atmel_mci.h b/drivers/mmc/atmel_mci.h
index 90ab6a8..3095d22 100644
--- a/drivers/mmc/atmel_mci.h
+++ b/drivers/mmc/atmel_mci.h
@@ -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
diff --git a/drivers/mmc/gen_atmel_mci.c b/drivers/mmc/gen_atmel_mci.c
index f346b24..d217574 100644
--- a/drivers/mmc/gen_atmel_mci.c
+++ b/drivers/mmc/gen_atmel_mci.c
@@ -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);
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 21aedba..cbd7567 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -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;
diff --git a/drivers/mmc/mv_sdhci.c b/drivers/mmc/mv_sdhci.c
new file mode 100644
index 0000000..9e59951
--- /dev/null
+++ b/drivers/mmc/mv_sdhci.c
@@ -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;
+}
diff --git a/drivers/mmc/s5p_mmc.c b/drivers/mmc/s5p_mmc.c
index 280738f..f136813 100644
--- a/drivers/mmc/s5p_mmc.c
+++ b/drivers/mmc/s5p_mmc.c
@@ -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;
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
new file mode 100644
index 0000000..9ebd33d
--- /dev/null
+++ b/drivers/mmc/sdhci.c
@@ -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;
+}
diff --git a/drivers/mmc/sh_mmcif.c b/drivers/mmc/sh_mmcif.c
new file mode 100644
index 0000000..567e2cb
--- /dev/null
+++ b/drivers/mmc/sh_mmcif.c
@@ -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;
+}
diff --git a/drivers/mmc/sh_mmcif.h b/drivers/mmc/sh_mmcif.h
new file mode 100644
index 0000000..bd6fbf7
--- /dev/null
+++ b/drivers/mmc/sh_mmcif.h
@@ -0,0 +1,238 @@
+/*
+ * 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_ */
diff --git a/drivers/mmc/tegra2_mmc.c b/drivers/mmc/tegra2_mmc.c
new file mode 100644
index 0000000..8b6f829
--- /dev/null
+++ b/drivers/mmc/tegra2_mmc.c
@@ -0,0 +1,510 @@
+/*
+ * (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);
+}
diff --git a/drivers/mmc/tegra2_mmc.h b/drivers/mmc/tegra2_mmc.h
new file mode 100644
index 0000000..4b80f9f
--- /dev/null
+++ b/drivers/mmc/tegra2_mmc.h
@@ -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_ */
generated by cgit v1.1 at 2024-11-28 18:41:49 +0000