diff options
| -rw-r--r-- | arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c | 2 | ||||
| -rw-r--r-- | arch/avr32/lib/board.c | 2 | ||||
| -rw-r--r-- | doc/README.atmel_mci | 2 | ||||
| -rw-r--r-- | drivers/mmc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/mmc/atmel_mci.c | 533 |
5 files changed, 3 insertions, 537 deletions
diff --git a/arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c b/arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c index a4e9f09..62f76fa 100644 --- a/arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c +++ b/arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c @@ -196,7 +196,7 @@ void at91_macb_hw_init(void) } #endif -#if defined(CONFIG_ATMEL_MCI) || defined(CONFIG_GENERIC_ATMEL_MCI) +#if defined(CONFIG_GENERIC_ATMEL_MCI) void at91_mci_hw_init(void) { at91_set_a_periph(AT91_PIO_PORTA, 8, 1); /* MCCK */ diff --git a/arch/avr32/lib/board.c b/arch/avr32/lib/board.c index e110d23..d626c29 100644 --- a/arch/avr32/lib/board.c +++ b/arch/avr32/lib/board.c @@ -39,7 +39,7 @@ #define CONFIG_IDENT_STRING "" #endif -#ifdef CONFIG_ATMEL_MCI +#ifdef CONFIG_GENERIC_ATMEL_MCI #include <mmc.h> #endif DECLARE_GLOBAL_DATA_PTR; diff --git a/doc/README.atmel_mci b/doc/README.atmel_mci index 0cbd909..1ec4465 100644 --- a/doc/README.atmel_mci +++ b/doc/README.atmel_mci @@ -20,7 +20,7 @@ board/SoC specific manner before the driver is initialized: example: this is added to at91sam9260_devices.c: -#if defined(CONFIG_ATMEL_MCI) || defined(CONFIG_GENERIC_ATMEL_MCI) +#if defined(CONFIG_GENERIC_ATMEL_MCI) void at91_mci_hw_init(void) { at91_set_a_periph(AT91_PIO_PORTA, 8, PUP); /* MCCK */ diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile index 506f1d6..c245352 100644 --- a/drivers/mmc/Makefile +++ b/drivers/mmc/Makefile @@ -25,7 +25,6 @@ include $(TOPDIR)/config.mk LIB := $(obj)libmmc.o -COBJS-$(CONFIG_ATMEL_MCI) += atmel_mci.o COBJS-$(CONFIG_BFIN_SDH) += bfin_sdh.o COBJS-$(CONFIG_DAVINCI_MMC) += davinci_mmc.o COBJS-$(CONFIG_FSL_ESDHC) += fsl_esdhc.o diff --git a/drivers/mmc/atmel_mci.c b/drivers/mmc/atmel_mci.c deleted file mode 100644 index 0af8d42..0000000 --- a/drivers/mmc/atmel_mci.c +++ /dev/null @@ -1,533 +0,0 @@ -/* - * Copyright (C) 2004-2006 Atmel Corporation - * - * 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 <common.h> - -#include <part.h> -#include <mmc.h> - -#include <asm/io.h> -#include <asm/errno.h> -#include <asm/byteorder.h> -#include <asm/arch/clk.h> -#include <asm/arch/hardware.h> - -#include "atmel_mci.h" - -#ifdef DEBUG -#define pr_debug(fmt, args...) printf(fmt, ##args) -#else -#define pr_debug(...) do { } while(0) -#endif - -#ifndef CONFIG_SYS_MMC_CLK_OD -#define CONFIG_SYS_MMC_CLK_OD 150000 -#endif - -#ifndef CONFIG_SYS_MMC_CLK_PP -#define CONFIG_SYS_MMC_CLK_PP 5000000 -#endif - -#ifndef CONFIG_SYS_MMC_OP_COND -#define CONFIG_SYS_MMC_OP_COND 0x00100000 -#endif - -#define MMC_DEFAULT_BLKLEN 512 -#define MMC_DEFAULT_RCA 1 - -static unsigned int mmc_rca; -static int mmc_card_is_sd; -static block_dev_desc_t mmc_blkdev; - -block_dev_desc_t *mmc_get_dev(int dev) -{ - return &mmc_blkdev; -} - -static void mci_set_mode(unsigned long hz, unsigned long blklen) -{ - unsigned long bus_hz; - unsigned long clkdiv; - - bus_hz = get_mci_clk_rate(); - clkdiv = (bus_hz / hz) / 2 - 1; - - pr_debug("mmc: setting clock %lu Hz, block size %lu\n", - hz, blklen); - - if (clkdiv & ~255UL) { - clkdiv = 255; - printf("mmc: clock %lu too low; setting CLKDIV to 255\n", - hz); - } - - blklen &= 0xfffc; - mmci_writel(MR, (MMCI_BF(CLKDIV, clkdiv) - | MMCI_BF(BLKLEN, blklen) - | MMCI_BIT(RDPROOF) - | MMCI_BIT(WRPROOF))); -} - -#define RESP_NO_CRC 1 -#define R1 MMCI_BF(RSPTYP, 1) -#define R2 MMCI_BF(RSPTYP, 2) -#define R3 (R1 | RESP_NO_CRC) -#define R6 R1 -#define NID MMCI_BF(MAXLAT, 0) -#define NCR MMCI_BF(MAXLAT, 1) -#define TRCMD_START MMCI_BF(TRCMD, 1) -#define TRDIR_READ MMCI_BF(TRDIR, 1) -#define TRTYP_BLOCK MMCI_BF(TRTYP, 0) -#define INIT_CMD MMCI_BF(SPCMD, 1) -#define OPEN_DRAIN MMCI_BF(OPDCMD, 1) - -#define ERROR_FLAGS (MMCI_BIT(DTOE) \ - | MMCI_BIT(RDIRE) \ - | MMCI_BIT(RENDE) \ - | MMCI_BIT(RINDE) \ - | MMCI_BIT(RTOE)) - -static int -mmc_cmd(unsigned long cmd, unsigned long arg, - void *resp, unsigned long flags) -{ - unsigned long *response = resp; - int i, response_words = 0; - unsigned long error_flags; - u32 status; - - pr_debug("mmc: CMD%lu 0x%lx (flags 0x%lx)\n", - cmd, arg, flags); - - error_flags = ERROR_FLAGS; - if (!(flags & RESP_NO_CRC)) - error_flags |= MMCI_BIT(RCRCE); - - flags &= ~MMCI_BF(CMDNB, ~0UL); - - if (MMCI_BFEXT(RSPTYP, flags) == MMCI_RSPTYP_48_BIT_RESP) - response_words = 1; - else if (MMCI_BFEXT(RSPTYP, flags) == MMCI_RSPTYP_136_BIT_RESP) - response_words = 4; - - mmci_writel(ARGR, arg); - mmci_writel(CMDR, cmd | flags); - do { - udelay(40); - status = mmci_readl(SR); - } while (!(status & MMCI_BIT(CMDRDY))); - - pr_debug("mmc: status 0x%08x\n", status); - - if (status & error_flags) { - printf("mmc: command %lu failed (status: 0x%08x)\n", - cmd, status); - return -EIO; - } - - if (response_words) - pr_debug("mmc: response:"); - - for (i = 0; i < response_words; i++) { - response[i] = mmci_readl(RSPR); - pr_debug(" %08lx", response[i]); - } - pr_debug("\n"); - - return 0; -} - -static int mmc_acmd(unsigned long cmd, unsigned long arg, - void *resp, unsigned long flags) -{ - unsigned long aresp[4]; - int ret; - - /* - * Seems like the APP_CMD part of an ACMD has 64 cycles max - * latency even though the ACMD part doesn't. This isn't - * entirely clear in the SD Card spec, but some cards refuse - * to work if we attempt to use 5 cycles max latency here... - */ - ret = mmc_cmd(MMC_CMD_APP_CMD, 0, aresp, - R1 | NCR | (flags & OPEN_DRAIN)); - if (ret) - return ret; - if ((aresp[0] & (R1_ILLEGAL_COMMAND | R1_APP_CMD)) != R1_APP_CMD) - return -ENODEV; - - ret = mmc_cmd(cmd, arg, resp, flags); - return ret; -} - -static unsigned long -mmc_bread(int dev, unsigned long start, lbaint_t blkcnt, - void *buffer) -{ - int ret, i = 0; - unsigned long resp[4]; - unsigned long card_status, data; - unsigned long wordcount; - u32 *p = buffer; - u32 status; - - if (blkcnt == 0) - return 0; - - pr_debug("mmc_bread: dev %d, start %lx, blkcnt %lx\n", - dev, start, blkcnt); - - /* Put the device into Transfer state */ - ret = mmc_cmd(MMC_CMD_SELECT_CARD, mmc_rca << 16, resp, R1 | NCR); - if (ret) goto out; - - /* Set block length */ - ret = mmc_cmd(MMC_CMD_SET_BLOCKLEN, mmc_blkdev.blksz, resp, R1 | NCR); - if (ret) goto out; - - pr_debug("MCI_DTOR = %08lx\n", mmci_readl(DTOR)); - - for (i = 0; i < blkcnt; i++, start++) { - ret = mmc_cmd(MMC_CMD_READ_SINGLE_BLOCK, - start * mmc_blkdev.blksz, resp, - (R1 | NCR | TRCMD_START | TRDIR_READ - | TRTYP_BLOCK)); - if (ret) goto out; - - ret = -EIO; - wordcount = 0; - do { - do { - status = mmci_readl(SR); - if (status & (ERROR_FLAGS | MMCI_BIT(OVRE))) - goto read_error; - } while (!(status & MMCI_BIT(RXRDY))); - - if (status & MMCI_BIT(RXRDY)) { - data = mmci_readl(RDR); - /* pr_debug("%x\n", data); */ - *p++ = data; - wordcount++; - } - } while(wordcount < (mmc_blkdev.blksz / 4)); - - pr_debug("mmc: read %u words, waiting for BLKE\n", wordcount); - - do { - status = mmci_readl(SR); - } while (!(status & MMCI_BIT(BLKE))); - - putc('.'); - } - -out: - /* Put the device back into Standby state */ - mmc_cmd(MMC_CMD_SELECT_CARD, 0, resp, NCR); - return i; - -read_error: - mmc_cmd(MMC_CMD_SEND_STATUS, mmc_rca << 16, &card_status, R1 | NCR); - printf("mmc: bread failed, status = %08x, card status = %08lx\n", - status, card_status); - goto out; -} - -static void mmc_parse_cid(struct mmc_cid *cid, unsigned long *resp) -{ - cid->mid = resp[0] >> 24; - cid->oid = (resp[0] >> 8) & 0xffff; - cid->pnm[0] = resp[0]; - cid->pnm[1] = resp[1] >> 24; - cid->pnm[2] = resp[1] >> 16; - cid->pnm[3] = resp[1] >> 8; - cid->pnm[4] = resp[1]; - cid->pnm[5] = resp[2] >> 24; - cid->pnm[6] = 0; - cid->prv = resp[2] >> 16; - cid->psn = (resp[2] << 16) | (resp[3] >> 16); - cid->mdt = resp[3] >> 8; -} - -static void sd_parse_cid(struct mmc_cid *cid, unsigned long *resp) -{ - cid->mid = resp[0] >> 24; - cid->oid = (resp[0] >> 8) & 0xffff; - cid->pnm[0] = resp[0]; - cid->pnm[1] = resp[1] >> 24; - cid->pnm[2] = resp[1] >> 16; - cid->pnm[3] = resp[1] >> 8; - cid->pnm[4] = resp[1]; - cid->pnm[5] = 0; - cid->pnm[6] = 0; - cid->prv = resp[2] >> 24; - cid->psn = (resp[2] << 8) | (resp[3] >> 24); - cid->mdt = (resp[3] >> 8) & 0x0fff; -} - -static void mmc_dump_cid(const struct mmc_cid *cid) -{ - printf("Manufacturer ID: %02X\n", cid->mid); - printf("OEM/Application ID: %04X\n", cid->oid); - printf("Product name: %s\n", cid->pnm); - printf("Product Revision: %u.%u\n", - cid->prv >> 4, cid->prv & 0x0f); - printf("Product Serial Number: %lu\n", cid->psn); - printf("Manufacturing Date: %02u/%02u\n", - cid->mdt >> 4, cid->mdt & 0x0f); -} - -static void mmc_dump_csd(const struct mmc_csd *csd) -{ - unsigned long *csd_raw = (unsigned long *)csd; - printf("CSD data: %08lx %08lx %08lx %08lx\n", - csd_raw[0], csd_raw[1], csd_raw[2], csd_raw[3]); - printf("CSD structure version: 1.%u\n", csd->csd_structure); - printf("MMC System Spec version: %u\n", csd->spec_vers); - printf("Card command classes: %03x\n", csd->ccc); - printf("Read block length: %u\n", 1 << csd->read_bl_len); - if (csd->read_bl_partial) - puts("Supports partial reads\n"); - else - puts("Does not support partial reads\n"); - printf("Write block length: %u\n", 1 << csd->write_bl_len); - if (csd->write_bl_partial) - puts("Supports partial writes\n"); - else - puts("Does not support partial writes\n"); - if (csd->wp_grp_enable) - printf("Supports group WP: %u\n", csd->wp_grp_size + 1); - else - puts("Does not support group WP\n"); - printf("Card capacity: %u bytes\n", - (csd->c_size + 1) * (1 << (csd->c_size_mult + 2)) * - (1 << csd->read_bl_len)); - printf("File format: %u/%u\n", - csd->file_format_grp, csd->file_format); - puts("Write protection: "); - if (csd->perm_write_protect) - puts(" permanent"); - if (csd->tmp_write_protect) - puts(" temporary"); - putc('\n'); -} - -static int mmc_idle_cards(void) -{ - int ret; - - /* Reset and initialize all cards */ - ret = mmc_cmd(MMC_CMD_GO_IDLE_STATE, 0, NULL, 0); - if (ret) - return ret; - - /* Keep the bus idle for 74 clock cycles */ - return mmc_cmd(0, 0, NULL, INIT_CMD); -} - -static int sd_init_card(struct mmc_cid *cid, int verbose) -{ - unsigned long resp[4]; - int i, ret = 0; - - mmc_idle_cards(); - for (i = 0; i < 1000; i++) { - ret = mmc_acmd(SD_CMD_APP_SEND_OP_COND, CONFIG_SYS_MMC_OP_COND, - resp, R3 | NID); - if (ret || (resp[0] & 0x80000000)) - break; - ret = -ETIMEDOUT; - } - - if (ret) - return ret; - - ret = mmc_cmd(MMC_CMD_ALL_SEND_CID, 0, resp, R2 | NID); - if (ret) - return ret; - sd_parse_cid(cid, resp); - if (verbose) - mmc_dump_cid(cid); - - /* Get RCA of the card that responded */ - ret = mmc_cmd(SD_CMD_SEND_RELATIVE_ADDR, 0, resp, R6 | NCR); - if (ret) - return ret; - - mmc_rca = resp[0] >> 16; - if (verbose) - printf("SD Card detected (RCA %u)\n", mmc_rca); - mmc_card_is_sd = 1; - return 0; -} - -static int mmc_init_card(struct mmc_cid *cid, int verbose) -{ - unsigned long resp[4]; - int i, ret = 0; - - mmc_idle_cards(); - for (i = 0; i < 1000; i++) { - ret = mmc_cmd(MMC_CMD_SEND_OP_COND, CONFIG_SYS_MMC_OP_COND, resp, - R3 | NID | OPEN_DRAIN); - if (ret || (resp[0] & 0x80000000)) - break; - ret = -ETIMEDOUT; - } - - if (ret) - return ret; - - /* Get CID of all cards. FIXME: Support more than one card */ - ret = mmc_cmd(MMC_CMD_ALL_SEND_CID, 0, resp, R2 | NID | OPEN_DRAIN); - if (ret) - return ret; - mmc_parse_cid(cid, resp); - if (verbose) - mmc_dump_cid(cid); - - /* Set Relative Address of the card that responded */ - ret = mmc_cmd(MMC_CMD_SET_RELATIVE_ADDR, mmc_rca << 16, resp, - R1 | NCR | OPEN_DRAIN); - return ret; -} - -static void mci_set_data_timeout(struct mmc_csd *csd) -{ - static const unsigned int dtomul_to_shift[] = { - 0, 4, 7, 8, 10, 12, 16, 20, - }; - static const unsigned int taac_exp[] = { - 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, - }; - static const unsigned int taac_mant[] = { - 0, 10, 12, 13, 15, 60, 25, 30, - 35, 40, 45, 50, 55, 60, 70, 80, - }; - unsigned int timeout_ns, timeout_clks; - unsigned int e, m; - unsigned int dtocyc, dtomul; - unsigned int shift; - u32 dtor; - - e = csd->taac & 0x07; - m = (csd->taac >> 3) & 0x0f; - - timeout_ns = (taac_exp[e] * taac_mant[m] + 9) / 10; - timeout_clks = csd->nsac * 100; - - timeout_clks += (((timeout_ns + 9) / 10) - * ((CONFIG_SYS_MMC_CLK_PP + 99999) / 100000) + 9999) / 10000; - if (!mmc_card_is_sd) - timeout_clks *= 10; - else - timeout_clks *= 100; - - dtocyc = timeout_clks; - dtomul = 0; - shift = 0; - while (dtocyc > 15 && dtomul < 8) { - dtomul++; - shift = dtomul_to_shift[dtomul]; - dtocyc = (timeout_clks + (1 << shift) - 1) >> shift; - } - - if (dtomul >= 8) { - dtomul = 7; - dtocyc = 15; - puts("Warning: Using maximum data timeout\n"); - } - - dtor = (MMCI_BF(DTOMUL, dtomul) - | MMCI_BF(DTOCYC, dtocyc)); - mmci_writel(DTOR, dtor); - - printf("mmc: Using %u cycles data timeout (DTOR=0x%x)\n", - dtocyc << shift, dtor); -} - -int mmc_legacy_init(int verbose) -{ - struct mmc_cid cid; - struct mmc_csd csd; - unsigned int max_blksz; - int ret; - - /* Initialize controller */ - mmci_writel(CR, MMCI_BIT(SWRST)); - mmci_writel(CR, MMCI_BIT(MCIEN)); - mmci_writel(DTOR, 0x5f); - mmci_writel(IDR, ~0UL); - mci_set_mode(CONFIG_SYS_MMC_CLK_OD, MMC_DEFAULT_BLKLEN); - - mmc_card_is_sd = 0; - - ret = sd_init_card(&cid, verbose); - if (ret) { - mmc_rca = MMC_DEFAULT_RCA; - ret = mmc_init_card(&cid, verbose); - } - if (ret) - return ret; - - /* Get CSD from the card */ - ret = mmc_cmd(MMC_CMD_SEND_CSD, mmc_rca << 16, &csd, R2 | NCR); - if (ret) - return ret; - if (verbose) - mmc_dump_csd(&csd); - - mci_set_data_timeout(&csd); - - /* Initialize the blockdev structure */ - mmc_blkdev.if_type = IF_TYPE_MMC; - mmc_blkdev.part_type = PART_TYPE_DOS; - mmc_blkdev.block_read = mmc_bread; - sprintf((char *)mmc_blkdev.vendor, - "Man %02x%04x Snr %08lx", - cid.mid, cid.oid, cid.psn); - strncpy((char *)mmc_blkdev.product, cid.pnm, - sizeof(mmc_blkdev.product)); - sprintf((char *)mmc_blkdev.revision, "%x %x", - cid.prv >> 4, cid.prv & 0x0f); - - /* - * If we can't use 512 byte blocks, refuse to deal with the - * card. Tons of code elsewhere seems to depend on this. - */ - max_blksz = 1 << csd.read_bl_len; - if (max_blksz < 512 || (max_blksz > 512 && !csd.read_bl_partial)) { - printf("Card does not support 512 byte reads, aborting.\n"); - return -ENODEV; - } - mmc_blkdev.blksz = 512; - mmc_blkdev.lba = (csd.c_size + 1) * (1 << (csd.c_size_mult + 2)); - - mci_set_mode(CONFIG_SYS_MMC_CLK_PP, mmc_blkdev.blksz); - -#if 0 - if (fat_register_device(&mmc_blkdev, 1)) - printf("Could not register MMC fat device\n"); -#else - init_part(&mmc_blkdev); -#endif - - return 0; -} |