diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/mmc/exynos_dw_mmc.c | 57 | ||||
| -rw-r--r-- | drivers/mmc/mmc.c | 63 | ||||
| -rw-r--r-- | drivers/mmc/mxsmmc.c | 30 | ||||
| -rw-r--r-- | drivers/mmc/sdhci.c | 3 | ||||
| -rw-r--r-- | drivers/mmc/tegra_mmc.c | 64 |
6 files changed, 153 insertions, 65 deletions
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile index a1dd7302bf..65791aa218 100644 --- a/drivers/mmc/Makefile +++ b/drivers/mmc/Makefile @@ -47,6 +47,7 @@ COBJS-$(CONFIG_S5P_SDHCI) += s5p_sdhci.o COBJS-$(CONFIG_SH_MMCIF) += sh_mmcif.o COBJS-$(CONFIG_TEGRA_MMC) += tegra_mmc.o COBJS-$(CONFIG_DWMMC) += dw_mmc.o +COBJS-$(CONFIG_EXYNOS_DWMMC) += exynos_dw_mmc.o COBJS := $(COBJS-y) SRCS := $(COBJS:.o=.c) diff --git a/drivers/mmc/exynos_dw_mmc.c b/drivers/mmc/exynos_dw_mmc.c new file mode 100644 index 0000000000..72a31b73fd --- /dev/null +++ b/drivers/mmc/exynos_dw_mmc.c @@ -0,0 +1,57 @@ +/* + * (C) Copyright 2012 SAMSUNG Electronics + * Jaehoon Chung <jh80.chung@samsung.com> + * + * 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 <malloc.h> +#include <dwmmc.h> +#include <asm/arch/dwmmc.h> +#include <asm/arch/clk.h> + +static char *EXYNOS_NAME = "EXYNOS DWMMC"; + +static void exynos_dwmci_clksel(struct dwmci_host *host) +{ + u32 val; + val = DWMCI_SET_SAMPLE_CLK(DWMCI_SHIFT_0) | + DWMCI_SET_DRV_CLK(DWMCI_SHIFT_0) | DWMCI_SET_DIV_RATIO(0); + + dwmci_writel(host, DWMCI_CLKSEL, val); +} + +int exynos_dwmci_init(u32 regbase, int bus_width, int index) +{ + struct dwmci_host *host = NULL; + host = malloc(sizeof(struct dwmci_host)); + if (!host) { + printf("dwmci_host malloc fail!\n"); + return 1; + } + + host->name = EXYNOS_NAME; + host->ioaddr = (void *)regbase; + host->buswidth = bus_width; + host->clksel = exynos_dwmci_clksel; + host->dev_index = index; + + add_dwmci(host, 52000000, 400000); + + return 0; +} + diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 5ffd8c59e6..72e8ce6da4 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -868,7 +868,7 @@ static void mmc_set_bus_width(struct mmc *mmc, uint width) static int mmc_startup(struct mmc *mmc) { - int err, width; + int err; uint mult, freq; u64 cmult, csize, capacity; struct mmc_cmd cmd; @@ -1087,21 +1087,44 @@ static int mmc_startup(struct mmc *mmc) else mmc->tran_speed = 25000000; } else { - width = ((mmc->host_caps & MMC_MODE_MASK_WIDTH_BITS) >> - MMC_MODE_WIDTH_BITS_SHIFT); - for (; width >= 0; width--) { - /* Set the card to use 4 bit*/ + int idx; + + /* An array of possible bus widths in order of preference */ + static unsigned ext_csd_bits[] = { + EXT_CSD_BUS_WIDTH_8, + EXT_CSD_BUS_WIDTH_4, + EXT_CSD_BUS_WIDTH_1, + }; + + /* An array to map CSD bus widths to host cap bits */ + static unsigned ext_to_hostcaps[] = { + [EXT_CSD_BUS_WIDTH_4] = MMC_MODE_4BIT, + [EXT_CSD_BUS_WIDTH_8] = MMC_MODE_8BIT, + }; + + /* An array to map chosen bus width to an integer */ + static unsigned widths[] = { + 8, 4, 1, + }; + + for (idx=0; idx < ARRAY_SIZE(ext_csd_bits); idx++) { + unsigned int extw = ext_csd_bits[idx]; + + /* + * Check to make sure the controller supports + * this bus width, if it's more than 1 + */ + if (extw != EXT_CSD_BUS_WIDTH_1 && + !(mmc->host_caps & ext_to_hostcaps[extw])) + continue; + err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, - EXT_CSD_BUS_WIDTH, width); + EXT_CSD_BUS_WIDTH, extw); if (err) continue; - if (!width) { - mmc_set_bus_width(mmc, 1); - break; - } else - mmc_set_bus_width(mmc, 4 * width); + mmc_set_bus_width(mmc, widths[idx]); err = mmc_send_ext_csd(mmc, test_csd); if (!err && ext_csd[EXT_CSD_PARTITIONING_SUPPORT] \ @@ -1115,7 +1138,7 @@ static int mmc_startup(struct mmc *mmc) && memcmp(&ext_csd[EXT_CSD_SEC_CNT], \ &test_csd[EXT_CSD_SEC_CNT], 4) == 0) { - mmc->card_caps |= width; + mmc->card_caps |= ext_to_hostcaps[extw]; break; } } @@ -1135,13 +1158,15 @@ static int mmc_startup(struct mmc *mmc) mmc->block_dev.type = 0; mmc->block_dev.blksz = mmc->read_bl_len; mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len); - sprintf(mmc->block_dev.vendor, "Man %06x Snr %08x", mmc->cid[0] >> 8, - (mmc->cid[2] << 8) | (mmc->cid[3] >> 24)); - sprintf(mmc->block_dev.product, "%c%c%c%c%c", mmc->cid[0] & 0xff, - (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff, - (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff); - sprintf(mmc->block_dev.revision, "%d.%d", mmc->cid[2] >> 28, - (mmc->cid[2] >> 24) & 0xf); + sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x", + mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff), + (mmc->cid[3] >> 16) & 0xffff); + sprintf(mmc->block_dev.product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff, + (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff, + (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff, + (mmc->cid[2] >> 24) & 0xff); + sprintf(mmc->block_dev.revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf, + (mmc->cid[2] >> 16) & 0xf); #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT) init_part(&mmc->block_dev); #endif diff --git a/drivers/mmc/mxsmmc.c b/drivers/mmc/mxsmmc.c index 109acbf623..024df592f2 100644 --- a/drivers/mmc/mxsmmc.c +++ b/drivers/mmc/mxsmmc.c @@ -96,11 +96,11 @@ static int mxsmmc_send_cmd_pio(struct mxsmmc_priv *priv, struct mmc_data *data) static int mxsmmc_send_cmd_dma(struct mxsmmc_priv *priv, struct mmc_data *data) { uint32_t data_count = data->blocksize * data->blocks; - uint32_t cache_data_count = roundup(data_count, ARCH_DMA_MINALIGN); int dmach; struct mxs_dma_desc *desc = priv->desc; - void *addr, *backup; - uint8_t flags; + void *addr; + unsigned int flags; + struct bounce_buffer bbstate; memset(desc, 0, sizeof(struct mxs_dma_desc)); desc->address = (dma_addr_t)desc; @@ -115,19 +115,9 @@ static int mxsmmc_send_cmd_dma(struct mxsmmc_priv *priv, struct mmc_data *data) flags = GEN_BB_READ; } - bounce_buffer_start(&addr, data_count, &backup, flags); + bounce_buffer_start(&bbstate, addr, data_count, flags); - priv->desc->cmd.address = (dma_addr_t)addr; - - if (data->flags & MMC_DATA_WRITE) { - /* Flush data to DRAM so DMA can pick them up */ - flush_dcache_range((uint32_t)addr, - (uint32_t)(addr) + cache_data_count); - } - - /* Invalidate the area, so no writeback into the RAM races with DMA */ - invalidate_dcache_range((uint32_t)priv->desc->cmd.address, - (uint32_t)(priv->desc->cmd.address + cache_data_count)); + priv->desc->cmd.address = (dma_addr_t)bbstate.bounce_buffer; priv->desc->cmd.data |= MXS_DMA_DESC_IRQ | MXS_DMA_DESC_DEC_SEM | (data_count << MXS_DMA_DESC_BYTES_OFFSET); @@ -135,17 +125,11 @@ static int mxsmmc_send_cmd_dma(struct mxsmmc_priv *priv, struct mmc_data *data) dmach = MXS_DMA_CHANNEL_AHB_APBH_SSP0 + priv->id; mxs_dma_desc_append(dmach, priv->desc); if (mxs_dma_go(dmach)) { - bounce_buffer_stop(&addr, data_count, &backup, flags); + bounce_buffer_stop(&bbstate); return COMM_ERR; } - /* The data arrived into DRAM, invalidate cache over them */ - if (data->flags & MMC_DATA_READ) { - invalidate_dcache_range((uint32_t)addr, - (uint32_t)(addr) + cache_data_count); - } - - bounce_buffer_stop(&addr, data_count, &backup, flags); + bounce_buffer_stop(&bbstate); return 0; } diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index 7845f873ac..b9cbe34f1f 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -340,6 +340,9 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power) return; } + if (host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER) + sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); + pwr |= SDHCI_POWER_ON; sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL); diff --git a/drivers/mmc/tegra_mmc.c b/drivers/mmc/tegra_mmc.c index 1fd5592f2d..d749ab095e 100644 --- a/drivers/mmc/tegra_mmc.c +++ b/drivers/mmc/tegra_mmc.c @@ -19,6 +19,7 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#include <bouncebuf.h> #include <common.h> #include <asm/gpio.h> #include <asm/io.h> @@ -66,14 +67,17 @@ static void tegra_get_setup(struct mmc_host *host, int dev_index) host->reg = (struct tegra_mmc *)host->base; } -static void mmc_prepare_data(struct mmc_host *host, struct mmc_data *data) +static void mmc_prepare_data(struct mmc_host *host, struct mmc_data *data, + struct bounce_buffer *bbstate) { 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); + debug("buf: %p (%p), data->blocks: %u, data->blocksize: %u\n", + bbstate->bounce_buffer, bbstate->user_buffer, data->blocks, + data->blocksize); + + writel((u32)bbstate->bounce_buffer, &host->reg->sysad); /* * DMASEL[4:3] * 00 = Selects SDMA @@ -114,14 +118,6 @@ static void mmc_set_transfer_mode(struct mmc_host *host, struct mmc_data *data) if (data->flags & MMC_DATA_READ) mode |= TEGRA_MMC_TRNMOD_DATA_XFER_DIR_SEL_READ; - if (data->flags & MMC_DATA_WRITE) { - if ((uintptr_t)data->src & (ARCH_DMA_MINALIGN - 1)) - printf("Warning: unaligned write to %p may fail\n", - data->src); - flush_dcache_range((ulong)data->src, (ulong)data->src + - data->blocks * data->blocksize); - } - writew(mode, &host->reg->trnmod); } @@ -156,8 +152,8 @@ static int mmc_wait_inhibit(struct mmc_host *host, return 0; } -static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, - struct mmc_data *data) +static int mmc_send_cmd_bounced(struct mmc *mmc, struct mmc_cmd *cmd, + struct mmc_data *data, struct bounce_buffer *bbstate) { struct mmc_host *host = (struct mmc_host *)mmc->priv; int flags, i; @@ -172,7 +168,7 @@ static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, return result; if (data) - mmc_prepare_data(host, data); + mmc_prepare_data(host, data, bbstate); debug("cmd->arg: %08x\n", cmd->cmdarg); writel(cmd->cmdarg, &host->reg->argument); @@ -322,20 +318,42 @@ static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, } } writel(mask, &host->reg->norintsts); - if (data->flags & MMC_DATA_READ) { - if ((uintptr_t)data->dest & (ARCH_DMA_MINALIGN - 1)) - printf("Warning: unaligned read from %p " - "may fail\n", data->dest); - invalidate_dcache_range((ulong)data->dest, - (ulong)data->dest + - data->blocks * data->blocksize); - } } udelay(1000); return 0; } +static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, + struct mmc_data *data) +{ + void *buf; + unsigned int bbflags; + size_t len; + struct bounce_buffer bbstate; + int ret; + + if (data) { + if (data->flags & MMC_DATA_READ) { + buf = data->dest; + bbflags = GEN_BB_WRITE; + } else { + buf = (void *)data->src; + bbflags = GEN_BB_READ; + } + len = data->blocks * data->blocksize; + + bounce_buffer_start(&bbstate, buf, len, bbflags); + } + + ret = mmc_send_cmd_bounced(mmc, cmd, data, &bbstate); + + if (data) + bounce_buffer_stop(&bbstate); + + return ret; +} + static void mmc_change_clock(struct mmc_host *host, uint clock) { int div; |
