summaryrefslogtreecommitdiff
path: root/drivers/mmc
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/Makefile1
-rw-r--r--drivers/mmc/pxa_mmc.c646
-rw-r--r--drivers/mmc/pxa_mmc.h138
3 files changed, 785 insertions, 0 deletions
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index 6aa24f5..1b0af12 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/pxa_mmc.c b/drivers/mmc/pxa_mmc.c
new file mode 100644
index 0000000..33da75f
--- /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_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
+/****************************************************/
+mmc_read(ulong 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
+/****************************************************/
+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;
+}
+
+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;
+
+ 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 0000000..6fa4268
--- /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__ */
generated by cgit v1.1 at 2024-11-23 18:53:29 +0000