From 21ef6a109c599adbf1f26804b9ba979c17ead0bc Mon Sep 17 00:00:00 2001 From: Tom Warren Date: Tue, 31 May 2011 10:30:37 +0000 Subject: mmc: Tegra2: SD/MMC driver for Seaboard - eMMC on SDMMC4, SDIO on SDMMC3 Signed-off-by: Tom Warren Acked-by: Andy Fleming --- drivers/mmc/Makefile | 1 + drivers/mmc/tegra2_mmc.c | 510 +++++++++++++++++++++++++++++++++++++++++++++++ drivers/mmc/tegra2_mmc.h | 81 ++++++++ 3 files changed, 592 insertions(+) create mode 100644 drivers/mmc/tegra2_mmc.c create mode 100644 drivers/mmc/tegra2_mmc.h (limited to 'drivers') diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile index a8fe17a6f7b..dce373d6f39 100644 --- a/drivers/mmc/Makefile +++ b/drivers/mmc/Makefile @@ -38,6 +38,7 @@ 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_TEGRA2_MMC) += tegra2_mmc.o COBJS := $(COBJS-y) SRCS := $(COBJS:.o=.c) diff --git a/drivers/mmc/tegra2_mmc.c b/drivers/mmc/tegra2_mmc.c new file mode 100644 index 00000000000..8b6f829e738 --- /dev/null +++ b/drivers/mmc/tegra2_mmc.c @@ -0,0 +1,510 @@ +/* + * (C) Copyright 2009 SAMSUNG Electronics + * Minkyu Kang + * Jaehoon Chung + * 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 +#include +#include +#include +#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 00000000000..4b80f9f3b3b --- /dev/null +++ b/drivers/mmc/tegra2_mmc.h @@ -0,0 +1,81 @@ +/* + * (C) Copyright 2009 SAMSUNG Electronics + * Minkyu Kang + * 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_ */ -- cgit v1.2.3 From e6f99a5611e1ff59555f93de88e527070f8548af Mon Sep 17 00:00:00 2001 From: Lei Wen Date: Wed, 22 Jun 2011 17:03:31 +0000 Subject: MMC: add erase function to both mmc and sd Erase is a very basic function since the begin of sd specification is announced. Although we could write a bulk of full 0xff memory to the range to take place of erase, it is more convenient and safe to implement the erase function itself. Signed-off-by: Lei Wen Signed-off-by: Andy Fleming Acked-by: Mike Frysinger --- drivers/mmc/mmc.c | 102 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 102 insertions(+) (limited to 'drivers') diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 21aedbaa3fe..9a1ee3d3984 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) { @@ -911,6 +993,10 @@ 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 */ @@ -921,6 +1007,21 @@ int mmc_startup(struct mmc *mmc) mmc->capacity *= 512; } + /* + * 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 */ if (ext_csd[160] & PART_SUPPORT) mmc->part_config = ext_csd[179]; @@ -1044,6 +1145,7 @@ 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; -- cgit v1.2.3 From af62a55785b95c1d52fc538387aaf66ffae1513c Mon Sep 17 00:00:00 2001 From: Lei Wen Date: Tue, 28 Jun 2011 21:50:06 +0000 Subject: MMC: add sdhci generic framework Nowdays, there are plenty of mmc driver in uboot adopt the sd standard host design, aka as sdhci. It is better to centralize the common logic together to better maintenance. Signed-off-by: Lei Wen Acked-by: Andy Fleming --- drivers/mmc/Makefile | 1 + drivers/mmc/sdhci.c | 433 +++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 434 insertions(+) create mode 100644 drivers/mmc/sdhci.c (limited to 'drivers') diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile index dce373d6f39..d08c8280131 100644 --- a/drivers/mmc/Makefile +++ b/drivers/mmc/Makefile @@ -38,6 +38,7 @@ 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_TEGRA2_MMC) += tegra2_mmc.o COBJS := $(COBJS-y) diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c new file mode 100644 index 00000000000..9ebd33d90e6 --- /dev/null +++ b/drivers/mmc/sdhci.c @@ -0,0 +1,433 @@ +/* + * Copyright 2011, Marvell Semiconductor Inc. + * Lei Wen + * + * 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 +#include +#include +#include + +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; +} -- cgit v1.2.3 From e75787d903e75095806f42f793328940656ea783 Mon Sep 17 00:00:00 2001 From: Lei Wen Date: Tue, 28 Jun 2011 21:50:07 +0000 Subject: MMC: add marvell sdhci driver This could support both armada100 and pantheon serial in the mainline, while this driver also be tested to support upcoming mg, mmp2 and mmp3 hardware. Signed-off-by: Lei Wen Acked-by: Andy Fleming --- drivers/mmc/Makefile | 1 + drivers/mmc/mv_sdhci.c | 21 +++++++++++++++++++++ 2 files changed, 22 insertions(+) create mode 100644 drivers/mmc/mv_sdhci.c (limited to 'drivers') diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile index d08c8280131..14f66877de4 100644 --- a/drivers/mmc/Makefile +++ b/drivers/mmc/Makefile @@ -33,6 +33,7 @@ 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 diff --git a/drivers/mmc/mv_sdhci.c b/drivers/mmc/mv_sdhci.c new file mode 100644 index 00000000000..9e5995103c7 --- /dev/null +++ b/drivers/mmc/mv_sdhci.c @@ -0,0 +1,21 @@ +#include +#include +#include + +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; +} -- cgit v1.2.3 From 639b7827d1caf28801775e222fe1d1dedece58f0 Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Mon, 4 Jul 2011 22:13:26 +0000 Subject: mmc: fix the condition for MMC version 4 Fix the problem that if we use the chip of MMC version 4 and the capacity is smaller than 2GB or equal, the mmc->capacity is invalid. According to the JEDEC Standard, the value of ext_csd's capacity is valid if the value is more than 2GB. Signed-off-by: Yoshihiro Shimoda Acked-by: Andy Fleming --- drivers/mmc/mmc.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 9a1ee3d3984..4e4e0fb0f3c 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -853,7 +853,7 @@ 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; @@ -1002,9 +1002,16 @@ int mmc_startup(struct mmc *mmc) /* 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 > 2 * 1024 * 1024 * 1024) + mmc->capacity = capacity; } /* -- cgit v1.2.3 From afb35666da107ccac076b30aed1ad90e7bbcffae Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Mon, 4 Jul 2011 22:21:22 +0000 Subject: mmc: sh_mmcif: add support for Renesas MMCIF Some Renesas SuperH have MMCIF module. This driver supports it. Signed-off-by: Yoshihiro Shimoda Acked-by: Andy Fleming --- drivers/mmc/Makefile | 1 + drivers/mmc/sh_mmcif.c | 608 +++++++++++++++++++++++++++++++++++++++++++++++++ drivers/mmc/sh_mmcif.h | 238 +++++++++++++++++++ 3 files changed, 847 insertions(+) create mode 100644 drivers/mmc/sh_mmcif.c create mode 100644 drivers/mmc/sh_mmcif.h (limited to 'drivers') diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile index 14f66877de4..3968c14bb09 100644 --- a/drivers/mmc/Makefile +++ b/drivers/mmc/Makefile @@ -40,6 +40,7 @@ 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) diff --git a/drivers/mmc/sh_mmcif.c b/drivers/mmc/sh_mmcif.c new file mode 100644 index 00000000000..567e2cb61d3 --- /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 +#include +#include +#include +#include +#include +#include +#include +#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 00000000000..bd6fbf7c62e --- /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_ */ -- cgit v1.2.3 From b1f1e821d335de58d362bf3013c93cef86cdb356 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C5=81ukasz=20Majewski?= Date: Tue, 5 Jul 2011 02:19:44 +0000 Subject: mmc: Access mode validation for eMMC cards > 2 GiB This patch provides handling of the two way handshake when SEND_OP_COND (CMD1) is send to mmc card. It is necessary to inform eMMC card if the host can work with high capacity cards (Jedec JESD84-A441, point 7.4.3). The extra flag MMC_MODE_HC (high capacity) is added to indicate if the host is capable of handling the high capacity eMMC cards. Since this change is added to the generic mmc framework, then it requires other boards to indicate if their mmc controllers can handle high capacity cards. As it is now - the old behaviour of the framework is preserved. Signed-off-by: Lukasz Majewski Signed-off-by: Andy Fleming --- drivers/mmc/mmc.c | 6 +++++- drivers/mmc/s5p_mmc.c | 2 +- 2 files changed, 6 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 4e4e0fb0f3c..cbd75673b8b 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -531,6 +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); @@ -1010,7 +1014,7 @@ int mmc_startup(struct mmc *mmc) capacity = ext_csd[212] << 0 | ext_csd[213] << 8 | ext_csd[214] << 16 | ext_csd[215] << 24; capacity *= 512; - if (capacity > 2 * 1024 * 1024 * 1024) + if ((capacity >> 20) > 2 * 1024) mmc->capacity = capacity; } diff --git a/drivers/mmc/s5p_mmc.c b/drivers/mmc/s5p_mmc.c index 280738fbf4e..f1368132a3b 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; -- cgit v1.2.3 From c310fc840472a36e4b9d2505830e9dc8d458d63c Mon Sep 17 00:00:00 2001 From: "elen.song" Date: Tue, 12 Jul 2011 00:17:07 +0000 Subject: AT91:mmc:fix multiple read/write error According to datasheet,set block count before multiple read/write. Signed-off-by: elen.song Acked-by: Andy Fleming --- drivers/mmc/atmel_mci.h | 9 ++++++++- drivers/mmc/gen_atmel_mci.c | 4 ++++ 2 files changed, 12 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/mmc/atmel_mci.h b/drivers/mmc/atmel_mci.h index 90ab6a8a6d0..3095d22e68d 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 f346b244be1..d217574b57f 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); -- cgit v1.2.3