diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/mmc/omap3_mmc.c | 155 | ||||
| -rw-r--r-- | drivers/mmc/pxa_mmc.c | 646 | ||||
| -rw-r--r-- | drivers/mmc/pxa_mmc.h | 138 |
4 files changed, 857 insertions, 83 deletions
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile index 6aa24f5d8..1b0af12a7 100644 --- a/drivers/mmc/Makefile +++ b/drivers/mmc/Makefile @@ -30,6 +30,7 @@ COBJS-$(CONFIG_ATMEL_MCI) += atmel_mci.o COBJS-$(CONFIG_BFIN_SDH) += bfin_sdh.o COBJS-$(CONFIG_OMAP3_MMC) += omap3_mmc.o COBJS-$(CONFIG_FSL_ESDHC) += fsl_esdhc.o +COBJS-$(CONFIG_PXA_MMC) += pxa_mmc.o COBJS := $(COBJS-y) SRCS := $(COBJS:.o=.c) diff --git a/drivers/mmc/omap3_mmc.c b/drivers/mmc/omap3_mmc.c index 01487022f..e90db7ee3 100644 --- a/drivers/mmc/omap3_mmc.c +++ b/drivers/mmc/omap3_mmc.c @@ -28,6 +28,8 @@ #include <mmc.h> #include <part.h> #include <i2c.h> +#include <asm/io.h> +#include <asm/arch/mmc.h> const unsigned short mmc_transspeed_val[15][4] = { {CLKD(10, 1), CLKD(10, 10), CLKD(10, 100), CLKD(10, 1000)}, @@ -49,6 +51,7 @@ const unsigned short mmc_transspeed_val[15][4] = { mmc_card_data cur_card_data; static block_dev_desc_t mmc_blk_dev; +static hsmmc_t *mmc_base = (hsmmc_t *)OMAP_HSMMC_BASE; block_dev_desc_t *mmc_get_dev(int dev) { @@ -59,55 +62,49 @@ void twl4030_mmc_config(void) { unsigned char data; - data = 0x20; - i2c_write(0x4B, 0x82, 1, &data, 1); - data = 0x2; - i2c_write(0x4B, 0x85, 1, &data, 1); + data = DEV_GRP_P1; + i2c_write(PWRMGT_ADDR_ID4, VMMC1_DEV_GRP, 1, &data, 1); + data = VMMC1_VSEL_30; + i2c_write(PWRMGT_ADDR_ID4, VMMC1_DEDICATED, 1, &data, 1); } unsigned char mmc_board_init(void) { - unsigned int value = 0; + t2_t *t2_base = (t2_t *)T2_BASE; twl4030_mmc_config(); - value = CONTROL_PBIAS_LITE; - CONTROL_PBIAS_LITE = value | (1 << 2) | (1 << 1) | (1 << 9); + writel(readl(&t2_base->pbias_lite) | PBIASLITEPWRDNZ1 | + PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0, + &t2_base->pbias_lite); - value = CONTROL_DEV_CONF0; - CONTROL_DEV_CONF0 = value | (1 << 24); + writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL, + &t2_base->devconf0); return 1; } void mmc_init_stream(void) { - volatile unsigned int mmc_stat; + writel(readl(&mmc_base->con) | INIT_INITSTREAM, &mmc_base->con); - OMAP_HSMMC_CON |= INIT_INITSTREAM; + writel(MMC_CMD0, &mmc_base->cmd); + while (!(readl(&mmc_base->stat) & CC_MASK)); - OMAP_HSMMC_CMD = MMC_CMD0; - do { - mmc_stat = OMAP_HSMMC_STAT; - } while (!(mmc_stat & CC_MASK)); - - OMAP_HSMMC_STAT = CC_MASK; + writel(CC_MASK, &mmc_base->stat); - OMAP_HSMMC_CMD = MMC_CMD0; - do { - mmc_stat = OMAP_HSMMC_STAT; - } while (!(mmc_stat & CC_MASK)); + writel(MMC_CMD0, &mmc_base->cmd); + while (!(readl(&mmc_base->stat) & CC_MASK)); - OMAP_HSMMC_STAT = OMAP_HSMMC_STAT; - OMAP_HSMMC_CON &= ~INIT_INITSTREAM; + writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con); } unsigned char mmc_clock_config(unsigned int iclk, unsigned short clk_div) { unsigned int val; - mmc_reg_out(OMAP_HSMMC_SYSCTL, (ICE_MASK | DTO_MASK | CEN_MASK), - (ICE_STOP | DTO_15THDTO | CEN_DISABLE)); + mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK), + (ICE_STOP | DTO_15THDTO | CEN_DISABLE)); switch (iclk) { case CLK_INITSEQ: @@ -122,12 +119,12 @@ unsigned char mmc_clock_config(unsigned int iclk, unsigned short clk_div) default: return 0; } - mmc_reg_out(OMAP_HSMMC_SYSCTL, - ICE_MASK | CLKD_MASK, (val << CLKD_OFFSET) | ICE_OSCILLATE); + mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK, + (val << CLKD_OFFSET) | ICE_OSCILLATE); - while ((OMAP_HSMMC_SYSCTL & ICS_MASK) == ICS_NOTREADY) ; + while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY); - OMAP_HSMMC_SYSCTL |= CEN_ENABLE; + writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl); return 1; } @@ -137,59 +134,63 @@ unsigned char mmc_init_setup(void) mmc_board_init(); - OMAP_HSMMC_SYSCONFIG |= MMC_SOFTRESET; - while ((OMAP_HSMMC_SYSSTATUS & RESETDONE) == 0) ; + writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET, + &mmc_base->sysconfig); + while ((readl(&mmc_base->sysstatus) & RESETDONE) == 0); - OMAP_HSMMC_SYSCTL |= SOFTRESETALL; - while ((OMAP_HSMMC_SYSCTL & SOFTRESETALL) != 0x0) ; + writel(readl(&mmc_base->sysctl) | SOFTRESETALL, &mmc_base->sysctl); + while ((readl(&mmc_base->sysctl) & SOFTRESETALL) != 0x0); - OMAP_HSMMC_HCTL = DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V0; - OMAP_HSMMC_CAPA |= VS30_3V0SUP | VS18_1V8SUP; + writel(DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V0, &mmc_base->hctl); + writel(readl(&mmc_base->capa) | VS30_3V0SUP | VS18_1V8SUP, + &mmc_base->capa); - reg_val = OMAP_HSMMC_CON & RESERVED_MASK; + reg_val = readl(&mmc_base->con) & RESERVED_MASK; - OMAP_HSMMC_CON = CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH | - CDP_ACTIVEHIGH | MIT_CTO | DW8_1_4BITMODE | MODE_FUNC | - STR_BLOCK | HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN; + writel(CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH | CDP_ACTIVEHIGH | + MIT_CTO | DW8_1_4BITMODE | MODE_FUNC | STR_BLOCK | + HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN, &mmc_base->con); mmc_clock_config(CLK_INITSEQ, 0); - OMAP_HSMMC_HCTL |= SDBP_PWRON; + writel(readl(&mmc_base->hctl) | SDBP_PWRON, &mmc_base->hctl); - OMAP_HSMMC_IE = 0x307f0033; + writel(IE_BADA | IE_CERR | IE_DEB | IE_DCRC | IE_DTO | IE_CIE | + IE_CEB | IE_CCRC | IE_CTO | IE_BRR | IE_BWR | IE_TC | IE_CC, + &mmc_base->ie); mmc_init_stream(); return 1; } unsigned char mmc_send_cmd(unsigned int cmd, unsigned int arg, - unsigned int *response) + unsigned int *response) { - volatile unsigned int mmc_stat; + unsigned int mmc_stat; - while ((OMAP_HSMMC_PSTATE & DATI_MASK) == DATI_CMDDIS) ; + while ((readl(&mmc_base->pstate) & DATI_MASK) == DATI_CMDDIS); - OMAP_HSMMC_BLK = BLEN_512BYTESLEN | NBLK_STPCNT; - OMAP_HSMMC_STAT = 0xFFFFFFFF; - OMAP_HSMMC_ARG = arg; - OMAP_HSMMC_CMD = cmd | CMD_TYPE_NORMAL | CICE_NOCHECK | - CCCE_NOCHECK | MSBS_SGLEBLK | ACEN_DISABLE | BCE_DISABLE | - DE_DISABLE; + writel(BLEN_512BYTESLEN | NBLK_STPCNT, &mmc_base->blk); + writel(0xFFFFFFFF, &mmc_base->stat); + writel(arg, &mmc_base->arg); + writel(cmd | CMD_TYPE_NORMAL | CICE_NOCHECK | CCCE_NOCHECK | + MSBS_SGLEBLK | ACEN_DISABLE | BCE_DISABLE | DE_DISABLE, + &mmc_base->cmd); while (1) { do { - mmc_stat = OMAP_HSMMC_STAT; + mmc_stat = readl(&mmc_base->stat); } while (mmc_stat == 0); if ((mmc_stat & ERRI_MASK) != 0) return (unsigned char) mmc_stat; if (mmc_stat & CC_MASK) { - OMAP_HSMMC_STAT = CC_MASK; - response[0] = OMAP_HSMMC_RSP10; + writel(CC_MASK, &mmc_base->stat); + response[0] = readl(&mmc_base->rsp10); if ((cmd & RSP_TYPE_MASK) == RSP_TYPE_LGHT136) { - response[1] = OMAP_HSMMC_RSP32; - response[2] = OMAP_HSMMC_RSP54; - response[3] = OMAP_HSMMC_RSP76; + response[1] = readl(&mmc_base->rsp32); + response[2] = readl(&mmc_base->rsp54); + response[3] = readl(&mmc_base->rsp76); } break; } @@ -199,7 +200,7 @@ unsigned char mmc_send_cmd(unsigned int cmd, unsigned int arg, unsigned char mmc_read_data(unsigned int *output_buf) { - volatile unsigned int mmc_stat; + unsigned int mmc_stat; unsigned int read_count = 0; /* @@ -207,7 +208,7 @@ unsigned char mmc_read_data(unsigned int *output_buf) */ while (1) { do { - mmc_stat = OMAP_HSMMC_STAT; + mmc_stat = readl(&mmc_base->stat); } while (mmc_stat == 0); if ((mmc_stat & ERRI_MASK) != 0) @@ -216,19 +217,22 @@ unsigned char mmc_read_data(unsigned int *output_buf) if (mmc_stat & BRR_MASK) { unsigned int k; - OMAP_HSMMC_STAT |= BRR_MASK; + writel(readl(&mmc_base->stat) | BRR_MASK, + &mmc_base->stat); for (k = 0; k < MMCSD_SECTOR_SIZE / 4; k++) { - *output_buf = OMAP_HSMMC_DATA; + *output_buf = readl(&mmc_base->data); output_buf++; read_count += 4; } } if (mmc_stat & BWR_MASK) - OMAP_HSMMC_STAT |= BWR_MASK; + writel(readl(&mmc_base->stat) | BWR_MASK, + &mmc_base->stat); if (mmc_stat & TC_MASK) { - OMAP_HSMMC_STAT |= TC_MASK; + writel(readl(&mmc_base->stat) | TC_MASK, + &mmc_base->stat); break; } } @@ -272,8 +276,8 @@ unsigned char mmc_detect_card(mmc_card_data *mmc_card_cur) mmc_card_cur->card_type = MMC_CARD; ocr_value |= MMC_OCR_REG_ACCESS_MODE_SECTOR; ret_cmd41 = MMC_CMD1; - OMAP_HSMMC_CON &= ~OD; - OMAP_HSMMC_CON |= OPENDRAIN; + writel(readl(&mmc_base->con) & ~OD, &mmc_base->con); + writel(readl(&mmc_base->con) | OPENDRAIN, &mmc_base->con); } argument = ocr_value; @@ -341,8 +345,8 @@ unsigned char mmc_detect_card(mmc_card_data *mmc_card_cur) mmc_card_cur->RCA = ((mmc_resp_r6 *) resp)->newpublishedrca; } - OMAP_HSMMC_CON &= ~OD; - OMAP_HSMMC_CON |= NOOPENDRAIN; + writel(readl(&mmc_base->con) & ~OD, &mmc_base->con); + writel(readl(&mmc_base->con) | NOOPENDRAIN, &mmc_base->con); return 1; } @@ -517,11 +521,11 @@ unsigned long mmc_bread(int dev_num, unsigned long blknr, lbaint_t blkcnt, void *dst) { omap_mmc_read_sect(blknr, (blkcnt * MMCSD_SECTOR_SIZE), &cur_card_data, - (unsigned long *) dst); + (unsigned long *) dst); return 1; } -int mmc_init(int verbose) +int mmc_legacy_init(int verbose) { if (configure_mmc(&cur_card_data) != 1) return 1; @@ -541,18 +545,3 @@ int mmc_init(int verbose) fat_register_device(&mmc_blk_dev, 1); return 0; } - -int mmc_read(ulong src, uchar *dst, int size) -{ - return 0; -} - -int mmc_write(uchar *src, ulong dst, int size) -{ - return 0; -} - -int mmc2info(ulong addr) -{ - return 0; -} diff --git a/drivers/mmc/pxa_mmc.c b/drivers/mmc/pxa_mmc.c new file mode 100644 index 000000000..8225235bf --- /dev/null +++ b/drivers/mmc/pxa_mmc.c @@ -0,0 +1,646 @@ +/* + * (C) Copyright 2003 + * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net + * + * 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 + */ + +#include <config.h> +#include <common.h> +#include <mmc.h> +#include <asm/errno.h> +#include <asm/arch/hardware.h> +#include <part.h> + +#include "pxa_mmc.h" + +extern int fat_register_device(block_dev_desc_t * dev_desc, int part_no); + +static block_dev_desc_t mmc_dev; + +block_dev_desc_t *mmc_get_dev(int dev) +{ + return ((block_dev_desc_t *) & mmc_dev); +} + +/* + * FIXME needs to read cid and csd info to determine block size + * and other parameters + */ +static uchar mmc_buf[MMC_BLOCK_SIZE]; +static uchar spec_ver; +static int mmc_ready = 0; +static int wide = 0; + +static uint32_t * +/****************************************************/ +mmc_cmd(ushort cmd, ushort argh, ushort argl, ushort cmdat) +/****************************************************/ +{ + static uint32_t resp[4], a, b, c; + ulong status; + int i; + + debug("mmc_cmd %u 0x%04x 0x%04x 0x%04x\n", cmd, argh, argl, + cmdat | wide); + MMC_STRPCL = MMC_STRPCL_STOP_CLK; + MMC_I_MASK = ~MMC_I_MASK_CLK_IS_OFF; + while (!(MMC_I_REG & MMC_I_REG_CLK_IS_OFF)) ; + MMC_CMD = cmd; + MMC_ARGH = argh; + MMC_ARGL = argl; + MMC_CMDAT = cmdat | wide; + MMC_I_MASK = ~MMC_I_MASK_END_CMD_RES; + MMC_STRPCL = MMC_STRPCL_START_CLK; + while (!(MMC_I_REG & MMC_I_REG_END_CMD_RES)) ; + + status = MMC_STAT; + debug("MMC status 0x%08x\n", status); + if (status & MMC_STAT_TIME_OUT_RESPONSE) { + return 0; + } + + /* Linux says: + * Did I mention this is Sick. We always need to + * discard the upper 8 bits of the first 16-bit word. + */ + a = (MMC_RES & 0xffff); + for (i = 0; i < 4; i++) { + b = (MMC_RES & 0xffff); + c = (MMC_RES & 0xffff); + resp[i] = (a << 24) | (b << 8) | (c >> 8); + a = c; + debug("MMC resp[%d] = %#08x\n", i, resp[i]); + } + + return resp; +} + +int +/****************************************************/ +mmc_block_read(uchar * dst, ulong src, ulong len) +/****************************************************/ +{ + ushort argh, argl; + ulong status; + + if (len == 0) { + return 0; + } + + debug("mmc_block_rd dst %lx src %lx len %d\n", (ulong) dst, src, len); + + argh = len >> 16; + argl = len & 0xffff; + + /* set block len */ + mmc_cmd(MMC_CMD_SET_BLOCKLEN, argh, argl, MMC_CMDAT_R1); + + /* send read command */ + argh = src >> 16; + argl = src & 0xffff; + MMC_STRPCL = MMC_STRPCL_STOP_CLK; + MMC_RDTO = 0xffff; + MMC_NOB = 1; + MMC_BLKLEN = len; + mmc_cmd(MMC_CMD_READ_SINGLE_BLOCK, argh, argl, + MMC_CMDAT_R1 | MMC_CMDAT_READ | MMC_CMDAT_BLOCK | + MMC_CMDAT_DATA_EN); + + MMC_I_MASK = ~MMC_I_MASK_RXFIFO_RD_REQ; + while (len) { + if (MMC_I_REG & MMC_I_REG_RXFIFO_RD_REQ) { +#ifdef CONFIG_PXA27X + int i; + for (i = min(len, 32); i; i--) { + *dst++ = *((volatile uchar *)&MMC_RXFIFO); + len--; + } +#else + *dst++ = MMC_RXFIFO; + len--; +#endif + } + status = MMC_STAT; + if (status & MMC_STAT_ERRORS) { + printf("MMC_STAT error %lx\n", status); + return -1; + } + } + MMC_I_MASK = ~MMC_I_MASK_DATA_TRAN_DONE; + while (!(MMC_I_REG & MMC_I_REG_DATA_TRAN_DONE)) ; + status = MMC_STAT; + if (status & MMC_STAT_ERRORS) { + printf("MMC_STAT error %lx\n", status); + return -1; + } + return 0; +} + +int +/****************************************************/ +mmc_block_write(ulong dst, uchar * src, int len) +/****************************************************/ +{ + ushort argh, argl; + ulong status; + + if (len == 0) { + return 0; + } + + debug("mmc_block_wr dst %lx src %lx len %d\n", dst, (ulong) src, len); + + argh = len >> 16; + argl = len & 0xffff; + + /* set block len */ + mmc_cmd(MMC_CMD_SET_BLOCKLEN, argh, argl, MMC_CMDAT_R1); + + /* send write command */ + argh = dst >> 16; + argl = dst & 0xffff; + MMC_STRPCL = MMC_STRPCL_STOP_CLK; + MMC_NOB = 1; + MMC_BLKLEN = len; + mmc_cmd(MMC_CMD_WRITE_SINGLE_BLOCK, argh, argl, + MMC_CMDAT_R1 | MMC_CMDAT_WRITE | MMC_CMDAT_BLOCK | + MMC_CMDAT_DATA_EN); + + MMC_I_MASK = ~MMC_I_MASK_TXFIFO_WR_REQ; + while (len) { + if (MMC_I_REG & MMC_I_REG_TXFIFO_WR_REQ) { + int i, bytes = min(32, len); + + for (i = 0; i < bytes; i++) { + MMC_TXFIFO = *src++; + } + if (bytes < 32) { + MMC_PRTBUF = MMC_PRTBUF_BUF_PART_FULL; + } + len -= bytes; + } + status = MMC_STAT; + if (status & MMC_STAT_ERRORS) { + printf("MMC_STAT error %lx\n", status); + return -1; + } + } + MMC_I_MASK = ~MMC_I_MASK_DATA_TRAN_DONE; + while (!(MMC_I_REG & MMC_I_REG_DATA_TRAN_DONE)) ; + MMC_I_MASK = ~MMC_I_MASK_PRG_DONE; + while (!(MMC_I_REG & MMC_I_REG_PRG_DONE)) ; + status = MMC_STAT; + if (status & MMC_STAT_ERRORS) { + printf("MMC_STAT error %lx\n", status); + return -1; + } + return 0; +} + +int +/****************************************************/ +pxa_mmc_read(long src, uchar * dst, int size) +/****************************************************/ +{ + ulong end, part_start, part_end, part_len, aligned_start, aligned_end; + ulong mmc_block_size, mmc_block_address; + + if (size == 0) { + return 0; + } + + if (!mmc_ready) { + printf("Please initial the MMC first\n"); + return -1; + } + + mmc_block_size = MMC_BLOCK_SIZE; + mmc_block_address = ~(mmc_block_size - 1); + + src -= CONFIG_SYS_MMC_BASE; + end = src + size; + part_start = ~mmc_block_address & src; + part_end = ~mmc_block_address & end; + aligned_start = mmc_block_address & src; + aligned_end = mmc_block_address & end; + + /* all block aligned accesses */ + debug + ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", + src, (ulong) dst, end, part_start, part_end, aligned_start, + aligned_end); + if (part_start) { + part_len = mmc_block_size - part_start; + debug + ("ps src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", + src, (ulong) dst, end, part_start, part_end, aligned_start, + aligned_end); + if ((mmc_block_read(mmc_buf, aligned_start, mmc_block_size)) < + 0) { + return -1; + } + memcpy(dst, mmc_buf + part_start, part_len); + dst += part_len; + src += part_len; + } + debug + ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", + src, (ulong) dst, end, part_start, part_end, aligned_start, + aligned_end); + for (; src < aligned_end; src += mmc_block_size, dst += mmc_block_size) { + debug + ("al src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", + src, (ulong) dst, end, part_start, part_end, aligned_start, + aligned_end); + if ((mmc_block_read((uchar *) (dst), src, mmc_block_size)) < 0) { + return -1; + } + } + debug + ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", + src, (ulong) dst, end, part_start, part_end, aligned_start, + aligned_end); + if (part_end && src < end) { + debug + ("pe src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", + src, (ulong) dst, end, part_start, part_end, aligned_start, + aligned_end); + if ((mmc_block_read(mmc_buf, aligned_end, mmc_block_size)) < 0) { + return -1; + } + memcpy(dst, mmc_buf, part_end); + } + return 0; +} + +int +/****************************************************/ +pxa_mmc_write(uchar * src, ulong dst, int size) +/****************************************************/ +{ + ulong end, part_start, part_end, part_len, aligned_start, aligned_end; + ulong mmc_block_size, mmc_block_address; + + if (size == 0) { + return 0; + } + + if (!mmc_ready) { + printf("Please initial the MMC first\n"); + return -1; + } + + mmc_block_size = MMC_BLOCK_SIZE; + mmc_block_address = ~(mmc_block_size - 1); + + dst -= CONFIG_SYS_MMC_BASE; + end = dst + size; + part_start = ~mmc_block_address & dst; + part_end = ~mmc_block_address & end; + aligned_start = mmc_block_address & dst; + aligned_end = mmc_block_address & end; + + /* all block aligned accesses */ + debug + ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", + src, (ulong) dst, end, part_start, part_end, aligned_start, + aligned_end); + if (part_start) { + part_len = mmc_block_size - part_start; + debug + ("ps src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", + (ulong) src, dst, end, part_start, part_end, aligned_start, + aligned_end); + if ((mmc_block_read(mmc_buf, aligned_start, mmc_block_size)) < + 0) { + return -1; + } + memcpy(mmc_buf + part_start, src, part_len); + if ((mmc_block_write(aligned_start, mmc_buf, mmc_block_size)) < + 0) { + return -1; + } + dst += part_len; + src += part_len; + } + debug + ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", + src, (ulong) dst, end, part_start, part_end, aligned_start, + aligned_end); + for (; dst < aligned_end; src += mmc_block_size, dst += mmc_block_size) { + debug + ("al src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", + src, (ulong) dst, end, part_start, part_end, aligned_start, + aligned_end); + if ((mmc_block_write(dst, (uchar *) src, mmc_block_size)) < 0) { + return -1; + } + } + debug + ("src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", + src, (ulong) dst, end, part_start, part_end, aligned_start, + aligned_end); + if (part_end && dst < end) { + debug + ("pe src %lx dst %lx end %lx pstart %lx pend %lx astart %lx aend %lx\n", + src, (ulong) dst, end, part_start, part_end, aligned_start, + aligned_end); + if ((mmc_block_read(mmc_buf, aligned_end, mmc_block_size)) < 0) { + return -1; + } + memcpy(mmc_buf, src, part_end); + if ((mmc_block_write(aligned_end, mmc_buf, mmc_block_size)) < 0) { + return -1; + } + } + return 0; +} + +static ulong +/****************************************************/ +mmc_bread(int dev_num, ulong blknr, lbaint_t blkcnt, void *dst) +/****************************************************/ +{ + int mmc_block_size = MMC_BLOCK_SIZE; + ulong src = blknr * mmc_block_size + CONFIG_SYS_MMC_BASE; + + pxa_mmc_read(src, (uchar *) dst, blkcnt * mmc_block_size); + return blkcnt; +} + +#ifdef __GNUC__ +#define likely(x) __builtin_expect(!!(x), 1) +#define unlikely(x) __builtin_expect(!!(x), 0) +#else +#define likely(x) (x) +#define unlikely(x) (x) +#endif + +#define UNSTUFF_BITS(resp,start,size) \ + ({ \ + const int __size = size; \ + const uint32_t __mask = (__size < 32 ? 1 << __size : 0) - 1; \ + const int32_t __off = 3 - ((start) / 32); \ + const int32_t __shft = (start) & 31; \ + uint32_t __res; \ + \ + __res = resp[__off] >> __shft; \ + if (__size + __shft > 32) \ + __res |= resp[__off-1] << ((32 - __shft) % 32); \ + __res & __mask; \ + }) + +/* + * Given the decoded CSD structure, decode the raw CID to our CID structure. + */ +static void mmc_decode_cid(uint32_t * resp) +{ + if (IF_TYPE_SD == mmc_dev.if_type) { + /* + * SD doesn't currently have a version field so we will + * have to assume we can parse this. + */ + sprintf((char *)mmc_dev.vendor, + "Man %02x OEM %c%c \"%c%c%c%c%c\" Date %02u/%04u", + UNSTUFF_BITS(resp, 120, 8), UNSTUFF_BITS(resp, 112, 8), + UNSTUFF_BITS(resp, 104, 8), UNSTUFF_BITS(resp, 96, 8), + UNSTUFF_BITS(resp, 88, 8), UNSTUFF_BITS(resp, 80, 8), + UNSTUFF_BITS(resp, 72, 8), UNSTUFF_BITS(resp, 64, 8), + UNSTUFF_BITS(resp, 8, 4), UNSTUFF_BITS(resp, 12, + 8) + 2000); + sprintf((char *)mmc_dev.revision, "%d.%d", + UNSTUFF_BITS(resp, 60, 4), UNSTUFF_BITS(resp, 56, 4)); + sprintf((char *)mmc_dev.product, "%u", + UNSTUFF_BITS(resp, 24, 32)); + } else { + /* + * The selection of the format here is based upon published + * specs from sandisk and from what people have reported. + */ + switch (spec_ver) { + case 0: /* MMC v1.0 - v1.2 */ + case 1: /* MMC v1.4 */ + sprintf((char *)mmc_dev.vendor, + "Man %02x%02x%02x \"%c%c%c%c%c%c%c\" Date %02u/%04u", + UNSTUFF_BITS(resp, 120, 8), UNSTUFF_BITS(resp, + 112, + 8), + UNSTUFF_BITS(resp, 104, 8), UNSTUFF_BITS(resp, + 96, 8), + UNSTUFF_BITS(resp, 88, 8), UNSTUFF_BITS(resp, + 80, 8), + UNSTUFF_BITS(resp, 72, 8), UNSTUFF_BITS(resp, + 64, 8), + UNSTUFF_BITS(resp, 56, 8), UNSTUFF_BITS(resp, + 48, 8), + UNSTUFF_BITS(resp, 12, 4), UNSTUFF_BITS(resp, 8, + 4) + + 1997); + sprintf((char *)mmc_dev.revision, "%d.%d", + UNSTUFF_BITS(resp, 44, 4), UNSTUFF_BITS(resp, + 40, 4)); + sprintf((char *)mmc_dev.product, "%u", + UNSTUFF_BITS(resp, 16, 24)); + break; + + case 2: /* MMC v2.0 - v2.2 */ + case 3: /* MMC v3.1 - v3.3 */ + case 4: /* MMC v4 */ + sprintf((char *)mmc_dev.vendor, + "Man %02x OEM %04x \"%c%c%c%c%c%c\" Date %02u/%04u", + UNSTUFF_BITS(resp, 120, 8), UNSTUFF_BITS(resp, + 104, + 16), + UNSTUFF_BITS(resp, 96, 8), UNSTUFF_BITS(resp, + 88, 8), + UNSTUFF_BITS(resp, 80, 8), UNSTUFF_BITS(resp, + 72, 8), + UNSTUFF_BITS(resp, 64, 8), UNSTUFF_BITS(resp, + 56, 8), + UNSTUFF_BITS(resp, 12, 4), UNSTUFF_BITS(resp, 8, + 4) + + 1997); + sprintf((char *)mmc_dev.product, "%u", + UNSTUFF_BITS(resp, 16, 32)); + sprintf((char *)mmc_dev.revision, "N/A"); + break; + + default: + printf("MMC card has unknown MMCA version %d\n", + spec_ver); + break; + } + } + printf("%s card.\nVendor: %s\nProduct: %s\nRevision: %s\n", + (IF_TYPE_SD == mmc_dev.if_type) ? "SD" : "MMC", mmc_dev.vendor, + mmc_dev.product, mmc_dev.revision); +} + +/* + * Given a 128-bit response, decode to our card CSD structure. + */ +static void mmc_decode_csd(uint32_t * resp) +{ + unsigned int mult, csd_struct; + + if (IF_TYPE_SD == mmc_dev.if_type) { + csd_struct = UNSTUFF_BITS(resp, 126, 2); + if (csd_struct != 0) { + printf("SD: unrecognised CSD structure version %d\n", + csd_struct); + return; + } + } else { + /* + * We only understand CSD structure v1.1 and v1.2. + * v1.2 has extra information in bits 15, 11 and 10. + */ + csd_struct = UNSTUFF_BITS(resp, 126, 2); + if (csd_struct != 1 && csd_struct != 2) { + printf("MMC: unrecognised CSD structure version %d\n", + csd_struct); + return; + } + + spec_ver = UNSTUFF_BITS(resp, 122, 4); + mmc_dev.if_type = IF_TYPE_MMC; + } + + mult = 1 << (UNSTUFF_BITS(resp, 47, 3) + 2); + mmc_dev.lba = (1 + UNSTUFF_BITS(resp, 62, 12)) * mult; + mmc_dev.blksz = 1 << UNSTUFF_BITS(resp, 80, 4); + + /* FIXME: The following just makes assumes that's the partition type -- should really read it */ + mmc_dev.part_type = PART_TYPE_DOS; + mmc_dev.dev = 0; + mmc_dev.lun = 0; + mmc_dev.type = DEV_TYPE_HARDDISK; + mmc_dev.removable = 0; + mmc_dev.block_read = mmc_bread; + + printf("Detected: %lu blocks of %lu bytes (%luMB) ", + mmc_dev.lba, + mmc_dev.blksz, + mmc_dev.lba * mmc_dev.blksz / (1024 * 1024)); +} + +int +/****************************************************/ +mmc_legacy_init(int verbose) +/****************************************************/ +{ + int retries, rc = -ENODEV; + uint32_t cid_resp[4]; + uint32_t *resp; + uint16_t rca = 0; + + /* Reset device interface type */ + mmc_dev.if_type = IF_TYPE_UNKNOWN; + +#if defined (CONFIG_LUBBOCK) || (defined (CONFIG_GUMSTIX) && !defined(CONFIG_PXA27X)) + set_GPIO_mode(GPIO6_MMCCLK_MD); + set_GPIO_mode(GPIO8_MMCCS0_MD); +#endif + CKEN |= CKEN12_MMC; /* enable MMC unit clock */ + + MMC_CLKRT = MMC_CLKRT_0_3125MHZ; + MMC_RESTO = MMC_RES_TO_MAX; + MMC_SPI = MMC_SPI_DISABLE; + + /* reset */ + mmc_cmd(MMC_CMD_GO_IDLE_STATE, 0, 0, MMC_CMDAT_INIT | MMC_CMDAT_R0); + udelay(200000); + retries = 3; + while (retries--) { + resp = mmc_cmd(MMC_CMD_APP_CMD, 0, 0, MMC_CMDAT_R1); + if (!(resp[0] & 0x00000020)) { /* Card does not support APP_CMD */ + debug("Card does not support APP_CMD\n"); + break; + } + + /* Select 3.2-3.3V and 3.3-3.4V */ + resp = mmc_cmd(SD_CMD_APP_SEND_OP_COND, 0x0030, 0x0000, + MMC_CMDAT_R3 | (retries < 2 ? 0 + : MMC_CMDAT_INIT)); + if (resp[0] & 0x80000000) { + mmc_dev.if_type = IF_TYPE_SD; + debug("Detected SD card\n"); + break; + } +#ifdef CONFIG_PXA27X + udelay(10000); +#else + udelay(200000); +#endif + } + + if (retries <= 0 || !(IF_TYPE_SD == mmc_dev.if_type)) { + debug("Failed to detect SD Card, trying MMC\n"); + resp = + mmc_cmd(MMC_CMD_SEND_OP_COND, 0x00ff, 0x8000, MMC_CMDAT_R3); + + retries = 10; + while (retries-- && resp && !(resp[0] & 0x80000000)) { +#ifdef CONFIG_PXA27X + udelay(10000); +#else + udelay(200000); +#endif + resp = + mmc_cmd(MMC_CMD_SEND_OP_COND, 0x00ff, 0x8000, + MMC_CMDAT_R3); + } + } + + /* try to get card id */ + resp = + mmc_cmd(MMC_CMD_ALL_SEND_CID, 0, 0, MMC_CMDAT_R2 | MMC_CMDAT_BUSY); + if (resp) { + memcpy(cid_resp, resp, sizeof(cid_resp)); + + /* MMC exists, get CSD too */ + resp = mmc_cmd(MMC_CMD_SET_RELATIVE_ADDR, 0, 0, MMC_CMDAT_R1); + if (IF_TYPE_SD == mmc_dev.if_type) + rca = ((resp[0] & 0xffff0000) >> 16); + resp = mmc_cmd(MMC_CMD_SEND_CSD, rca, 0, MMC_CMDAT_R2); + if (resp) { + mmc_decode_csd(resp); + rc = 0; + mmc_ready = 1; + } + + mmc_decode_cid(cid_resp); + } + + MMC_CLKRT = 0; /* 20 MHz */ + resp = mmc_cmd(MMC_CMD_SELECT_CARD, rca, 0, MMC_CMDAT_R1); + +#ifdef CONFIG_PXA27X + if (IF_TYPE_SD == mmc_dev.if_type) { + resp = mmc_cmd(MMC_CMD_APP_CMD, rca, 0, MMC_CMDAT_R1); + resp = mmc_cmd(SD_CMD_APP_SET_BUS_WIDTH, 0, 2, MMC_CMDAT_R1); + wide = MMC_CMDAT_SD_4DAT; + } +#endif + + fat_register_device(&mmc_dev, 1); /* partitions start counting with 1 */ + + return rc; +} diff --git a/drivers/mmc/pxa_mmc.h b/drivers/mmc/pxa_mmc.h new file mode 100644 index 000000000..6fa42686e --- /dev/null +++ b/drivers/mmc/pxa_mmc.h @@ -0,0 +1,138 @@ +/* + * linux/drivers/mmc/mmc_pxa.h + * + * Author: Vladimir Shebordaev, Igor Oblakov + * Copyright: MontaVista Software Inc. + * + * $Id: mmc_pxa.h,v 0.3.1.6 2002/09/25 19:25:48 ted Exp ted $ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __MMC_PXA_P_H__ +#define __MMC_PXA_P_H__ + +/* PXA-250 MMC controller registers */ + +/* MMC_STRPCL */ +#define MMC_STRPCL_STOP_CLK (0x0001UL) +#define MMC_STRPCL_START_CLK (0x0002UL) + +/* MMC_STAT */ +#define MMC_STAT_END_CMD_RES (0x0001UL << 13) +#define MMC_STAT_PRG_DONE (0x0001UL << 12) +#define MMC_STAT_DATA_TRAN_DONE (0x0001UL << 11) +#define MMC_STAT_CLK_EN (0x0001UL << 8) +#define MMC_STAT_RECV_FIFO_FULL (0x0001UL << 7) +#define MMC_STAT_XMIT_FIFO_EMPTY (0x0001UL << 6) +#define MMC_STAT_RES_CRC_ERROR (0x0001UL << 5) +#define MMC_STAT_SPI_READ_ERROR_TOKEN (0x0001UL << 4) +#define MMC_STAT_CRC_READ_ERROR (0x0001UL << 3) +#define MMC_STAT_CRC_WRITE_ERROR (0x0001UL << 2) +#define MMC_STAT_TIME_OUT_RESPONSE (0x0001UL << 1) +#define MMC_STAT_READ_TIME_OUT (0x0001UL) + +#define MMC_STAT_ERRORS (MMC_STAT_RES_CRC_ERROR|MMC_STAT_SPI_READ_ERROR_TOKEN\ + |MMC_STAT_CRC_READ_ERROR|MMC_STAT_TIME_OUT_RESPONSE\ + |MMC_STAT_READ_TIME_OUT|MMC_STAT_CRC_WRITE_ERROR) + +/* MMC_CLKRT */ +#define MMC_CLKRT_20MHZ (0x0000UL) +#define MMC_CLKRT_10MHZ (0x0001UL) +#define MMC_CLKRT_5MHZ (0x0002UL) +#define MMC_CLKRT_2_5MHZ (0x0003UL) +#define MMC_CLKRT_1_25MHZ (0x0004UL) +#define MMC_CLKRT_0_625MHZ (0x0005UL) +#define MMC_CLKRT_0_3125MHZ (0x0006UL) + +/* MMC_SPI */ +#define MMC_SPI_DISABLE (0x00UL) +#define MMC_SPI_EN (0x01UL) +#define MMC_SPI_CS_EN (0x01UL << 2) +#define MMC_SPI_CS_ADDRESS (0x01UL << 3) +#define MMC_SPI_CRC_ON (0x01UL << 1) + +/* MMC_CMDAT */ +#define MMC_CMDAT_SD_4DAT (0x0001UL << 8) +#define MMC_CMDAT_MMC_DMA_EN (0x0001UL << 7) +#define MMC_CMDAT_INIT (0x0001UL << 6) +#define MMC_CMDAT_BUSY (0x0001UL << 5) +#define MMC_CMDAT_BCR (0x0003UL << 5) +#define MMC_CMDAT_STREAM (0x0001UL << 4) +#define MMC_CMDAT_BLOCK (0x0000UL << 4) +#define MMC_CMDAT_WRITE (0x0001UL << 3) +#define MMC_CMDAT_READ (0x0000UL << 3) +#define MMC_CMDAT_DATA_EN (0x0001UL << 2) +#define MMC_CMDAT_R0 (0) +#define MMC_CMDAT_R1 (0x0001UL) +#define MMC_CMDAT_R2 (0x0002UL) +#define MMC_CMDAT_R3 (0x0003UL) + +/* MMC_RESTO */ +#define MMC_RES_TO_MAX (0x007fUL) /* [6:0] */ + +/* MMC_RDTO */ +#define MMC_READ_TO_MAX (0x0ffffUL) /* [15:0] */ + +/* MMC_BLKLEN */ +#define MMC_BLK_LEN_MAX (0x03ffUL) /* [9:0] */ + +/* MMC_PRTBUF */ +#define MMC_PRTBUF_BUF_PART_FULL (0x01UL) +#define MMC_PRTBUF_BUF_FULL (0x00UL ) + +/* MMC_I_MASK */ +#define MMC_I_MASK_TXFIFO_WR_REQ (0x01UL << 6) +#define MMC_I_MASK_RXFIFO_RD_REQ (0x01UL << 5) +#define MMC_I_MASK_CLK_IS_OFF (0x01UL << 4) +#define MMC_I_MASK_STOP_CMD (0x01UL << 3) +#define MMC_I_MASK_END_CMD_RES (0x01UL << 2) +#define MMC_I_MASK_PRG_DONE (0x01UL << 1) +#define MMC_I_MASK_DATA_TRAN_DONE (0x01UL) +#define MMC_I_MASK_ALL (0x07fUL) + + +/* MMC_I_REG */ +#define MMC_I_REG_TXFIFO_WR_REQ (0x01UL << 6) +#define MMC_I_REG_RXFIFO_RD_REQ (0x01UL << 5) +#define MMC_I_REG_CLK_IS_OFF (0x01UL << 4) +#define MMC_I_REG_STOP_CMD (0x01UL << 3) +#define MMC_I_REG_END_CMD_RES (0x01UL << 2) +#define MMC_I_REG_PRG_DONE (0x01UL << 1) +#define MMC_I_REG_DATA_TRAN_DONE (0x01UL) +#define MMC_I_REG_ALL (0x007fUL) + +/* MMC_CMD */ +#define MMC_CMD_INDEX_MAX (0x006fUL) /* [5:0] */ +#define CMD(x) (x) + +#define MMC_DEFAULT_RCA 1 + +#define MMC_BLOCK_SIZE 512 +#define MMC_MAX_BLOCK_SIZE 512 + +#define MMC_R1_IDLE_STATE 0x01 +#define MMC_R1_ERASE_STATE 0x02 +#define MMC_R1_ILLEGAL_CMD 0x04 +#define MMC_R1_COM_CRC_ERR 0x08 +#define MMC_R1_ERASE_SEQ_ERR 0x01 +#define MMC_R1_ADDR_ERR 0x02 +#define MMC_R1_PARAM_ERR 0x04 + +#define MMC_R1B_WP_ERASE_SKIP 0x0002 +#define MMC_R1B_ERR 0x0004 +#define MMC_R1B_CC_ERR 0x0008 +#define MMC_R1B_CARD_ECC_ERR 0x0010 +#define MMC_R1B_WP_VIOLATION 0x0020 +#define MMC_R1B_ERASE_PARAM 0x0040 +#define MMC_R1B_OOR 0x0080 +#define MMC_R1B_IDLE_STATE 0x0100 +#define MMC_R1B_ERASE_RESET 0x0200 +#define MMC_R1B_ILLEGAL_CMD 0x0400 +#define MMC_R1B_COM_CRC_ERR 0x0800 +#define MMC_R1B_ERASE_SEQ_ERR 0x1000 +#define MMC_R1B_ADDR_ERR 0x2000 +#define MMC_R1B_PARAM_ERR 0x4000 + +#endif /* __MMC_PXA_P_H__ */ |