From c3bf1ad7baa1b0dd989dedc260b7098b6089ae05 Mon Sep 17 00:00:00 2001 From: Haavard Skinnemoen Date: Thu, 12 Jun 2008 19:27:58 +0200 Subject: mmc: Move atmel_mci driver into drivers/mmc This makes it easier to use the driver on other platforms. Signed-off-by: Haavard Skinnemoen Acked-by: Jean-Chritophe PLAGNIOL-VILLARD --- cpu/at32ap/Makefile | 1 - cpu/at32ap/atmel_mci.c | 548 ------------------------------------------------ cpu/at32ap/atmel_mci.h | 201 ------------------ drivers/mmc/Makefile | 2 + drivers/mmc/atmel_mci.c | 548 ++++++++++++++++++++++++++++++++++++++++++++++++ drivers/mmc/atmel_mci.h | 201 ++++++++++++++++++ 6 files changed, 751 insertions(+), 750 deletions(-) delete mode 100644 cpu/at32ap/atmel_mci.c delete mode 100644 cpu/at32ap/atmel_mci.h create mode 100644 drivers/mmc/atmel_mci.c create mode 100644 drivers/mmc/atmel_mci.h diff --git a/cpu/at32ap/Makefile b/cpu/at32ap/Makefile index f1823300a8..33dc427681 100644 --- a/cpu/at32ap/Makefile +++ b/cpu/at32ap/Makefile @@ -35,7 +35,6 @@ COBJS-y += exception.o COBJS-y += cache.o COBJS-y += interrupts.o COBJS-y += pio.o -COBJS-$(CONFIG_ATMEL_MCI) += atmel_mci.o SRCS := $(START-y:.o=.S) $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c) OBJS := $(addprefix $(obj),$(SOBJS-y) $(COBJS-y)) diff --git a/cpu/at32ap/atmel_mci.c b/cpu/at32ap/atmel_mci.c deleted file mode 100644 index 61aa1849c2..0000000000 --- a/cpu/at32ap/atmel_mci.c +++ /dev/null @@ -1,548 +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 - -#include -#include - -#include -#include -#include -#include -#include - -#include "atmel_mci.h" - -#ifdef DEBUG -#define pr_debug(fmt, args...) printf(fmt, ##args) -#else -#define pr_debug(...) do { } while(0) -#endif - -#ifndef CFG_MMC_CLK_OD -#define CFG_MMC_CLK_OD 150000 -#endif - -#ifndef CFG_MMC_CLK_PP -#define CFG_MMC_CLK_PP 5000000 -#endif - -#ifndef CFG_MMC_OP_COND -#define CFG_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%08lx\n", status); - - if (status & error_flags) { - printf("mmc: command %lu failed (status: 0x%08lx)\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 = %08x\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: %02lX\n", cid->mid); - printf("OEM/Application ID: %04lX\n", cid->oid); - printf("Product name: %s\n", cid->pnm); - printf("Product Revision: %lu.%lu\n", - cid->prv >> 4, cid->prv & 0x0f); - printf("Product Serial Number: %lu\n", cid->psn); - printf("Manufacturing Date: %02lu/%02lu\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, CFG_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, CFG_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) - * ((CFG_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_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(CFG_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 %08x", - 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(CFG_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; -} - -int mmc_read(ulong src, uchar *dst, int size) -{ - return -ENOSYS; -} - -int mmc_write(uchar *src, ulong dst, int size) -{ - return -ENOSYS; -} - -int mmc2info(ulong addr) -{ - return 0; -} diff --git a/cpu/at32ap/atmel_mci.h b/cpu/at32ap/atmel_mci.h deleted file mode 100644 index 5b4f5c99b6..0000000000 --- a/cpu/at32ap/atmel_mci.h +++ /dev/null @@ -1,201 +0,0 @@ -/* - * Copyright (C) 2005-2006 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 - */ -#ifndef __CPU_AT32AP_ATMEL_MCI_H__ -#define __CPU_AT32AP_ATMEL_MCI_H__ - -/* Atmel MultiMedia Card Interface (MCI) registers */ -#define MMCI_CR 0x0000 -#define MMCI_MR 0x0004 -#define MMCI_DTOR 0x0008 -#define MMCI_SDCR 0x000c -#define MMCI_ARGR 0x0010 -#define MMCI_CMDR 0x0014 -#define MMCI_RSPR 0x0020 -#define MMCI_RSPR1 0x0024 -#define MMCI_RSPR2 0x0028 -#define MMCI_RSPR3 0x002c -#define MMCI_RDR 0x0030 -#define MMCI_TDR 0x0034 -#define MMCI_SR 0x0040 -#define MMCI_IER 0x0044 -#define MMCI_IDR 0x0048 -#define MMCI_IMR 0x004c - -/* Bitfields in CR */ -#define MMCI_MCIEN_OFFSET 0 -#define MMCI_MCIEN_SIZE 1 -#define MMCI_MCIDIS_OFFSET 1 -#define MMCI_MCIDIS_SIZE 1 -#define MMCI_PWSEN_OFFSET 2 -#define MMCI_PWSEN_SIZE 1 -#define MMCI_PWSDIS_OFFSET 3 -#define MMCI_PWSDIS_SIZE 1 -#define MMCI_SWRST_OFFSET 7 -#define MMCI_SWRST_SIZE 1 - -/* Bitfields in MR */ -#define MMCI_CLKDIV_OFFSET 0 -#define MMCI_CLKDIV_SIZE 8 -#define MMCI_PWSDIV_OFFSET 8 -#define MMCI_PWSDIV_SIZE 3 -#define MMCI_RDPROOF_OFFSET 11 -#define MMCI_RDPROOF_SIZE 1 -#define MMCI_WRPROOF_OFFSET 12 -#define MMCI_WRPROOF_SIZE 1 -#define MMCI_PDCPADV_OFFSET 14 -#define MMCI_PDCPADV_SIZE 1 -#define MMCI_PDCMODE_OFFSET 15 -#define MMCI_PDCMODE_SIZE 1 -#define MMCI_BLKLEN_OFFSET 16 -#define MMCI_BLKLEN_SIZE 16 - -/* Bitfields in DTOR */ -#define MMCI_DTOCYC_OFFSET 0 -#define MMCI_DTOCYC_SIZE 4 -#define MMCI_DTOMUL_OFFSET 4 -#define MMCI_DTOMUL_SIZE 3 - -/* Bitfields in SDCR */ -#define MMCI_SCDSEL_OFFSET 0 -#define MMCI_SCDSEL_SIZE 4 -#define MMCI_SCDBUS_OFFSET 7 -#define MMCI_SCDBUS_SIZE 1 - -/* Bitfields in ARGR */ -#define MMCI_ARG_OFFSET 0 -#define MMCI_ARG_SIZE 32 - -/* Bitfields in CMDR */ -#define MMCI_CMDNB_OFFSET 0 -#define MMCI_CMDNB_SIZE 6 -#define MMCI_RSPTYP_OFFSET 6 -#define MMCI_RSPTYP_SIZE 2 -#define MMCI_SPCMD_OFFSET 8 -#define MMCI_SPCMD_SIZE 3 -#define MMCI_OPDCMD_OFFSET 11 -#define MMCI_OPDCMD_SIZE 1 -#define MMCI_MAXLAT_OFFSET 12 -#define MMCI_MAXLAT_SIZE 1 -#define MMCI_TRCMD_OFFSET 16 -#define MMCI_TRCMD_SIZE 2 -#define MMCI_TRDIR_OFFSET 18 -#define MMCI_TRDIR_SIZE 1 -#define MMCI_TRTYP_OFFSET 19 -#define MMCI_TRTYP_SIZE 2 - -/* Bitfields in RSPRx */ -#define MMCI_RSP_OFFSET 0 -#define MMCI_RSP_SIZE 32 - -/* Bitfields in SR/IER/IDR/IMR */ -#define MMCI_CMDRDY_OFFSET 0 -#define MMCI_CMDRDY_SIZE 1 -#define MMCI_RXRDY_OFFSET 1 -#define MMCI_RXRDY_SIZE 1 -#define MMCI_TXRDY_OFFSET 2 -#define MMCI_TXRDY_SIZE 1 -#define MMCI_BLKE_OFFSET 3 -#define MMCI_BLKE_SIZE 1 -#define MMCI_DTIP_OFFSET 4 -#define MMCI_DTIP_SIZE 1 -#define MMCI_NOTBUSY_OFFSET 5 -#define MMCI_NOTBUSY_SIZE 1 -#define MMCI_ENDRX_OFFSET 6 -#define MMCI_ENDRX_SIZE 1 -#define MMCI_ENDTX_OFFSET 7 -#define MMCI_ENDTX_SIZE 1 -#define MMCI_RXBUFF_OFFSET 14 -#define MMCI_RXBUFF_SIZE 1 -#define MMCI_TXBUFE_OFFSET 15 -#define MMCI_TXBUFE_SIZE 1 -#define MMCI_RINDE_OFFSET 16 -#define MMCI_RINDE_SIZE 1 -#define MMCI_RDIRE_OFFSET 17 -#define MMCI_RDIRE_SIZE 1 -#define MMCI_RCRCE_OFFSET 18 -#define MMCI_RCRCE_SIZE 1 -#define MMCI_RENDE_OFFSET 19 -#define MMCI_RENDE_SIZE 1 -#define MMCI_RTOE_OFFSET 20 -#define MMCI_RTOE_SIZE 1 -#define MMCI_DCRCE_OFFSET 21 -#define MMCI_DCRCE_SIZE 1 -#define MMCI_DTOE_OFFSET 22 -#define MMCI_DTOE_SIZE 1 -#define MMCI_OVRE_OFFSET 30 -#define MMCI_OVRE_SIZE 1 -#define MMCI_UNRE_OFFSET 31 -#define MMCI_UNRE_SIZE 1 - -/* Constants for DTOMUL */ -#define MMCI_DTOMUL_1_CYCLE 0 -#define MMCI_DTOMUL_16_CYCLES 1 -#define MMCI_DTOMUL_128_CYCLES 2 -#define MMCI_DTOMUL_256_CYCLES 3 -#define MMCI_DTOMUL_1024_CYCLES 4 -#define MMCI_DTOMUL_4096_CYCLES 5 -#define MMCI_DTOMUL_65536_CYCLES 6 -#define MMCI_DTOMUL_1048576_CYCLES 7 - -/* Constants for RSPTYP */ -#define MMCI_RSPTYP_NO_RESP 0 -#define MMCI_RSPTYP_48_BIT_RESP 1 -#define MMCI_RSPTYP_136_BIT_RESP 2 - -/* Constants for SPCMD */ -#define MMCI_SPCMD_NO_SPEC_CMD 0 -#define MMCI_SPCMD_INIT_CMD 1 -#define MMCI_SPCMD_SYNC_CMD 2 -#define MMCI_SPCMD_INT_CMD 4 -#define MMCI_SPCMD_INT_RESP 5 - -/* Constants for TRCMD */ -#define MMCI_TRCMD_NO_TRANS 0 -#define MMCI_TRCMD_START_TRANS 1 -#define MMCI_TRCMD_STOP_TRANS 2 - -/* Constants for TRTYP */ -#define MMCI_TRTYP_BLOCK 0 -#define MMCI_TRTYP_MULTI_BLOCK 1 -#define MMCI_TRTYP_STREAM 2 - -/* Bit manipulation macros */ -#define MMCI_BIT(name) \ - (1 << MMCI_##name##_OFFSET) -#define MMCI_BF(name,value) \ - (((value) & ((1 << MMCI_##name##_SIZE) - 1)) \ - << MMCI_##name##_OFFSET) -#define MMCI_BFEXT(name,value) \ - (((value) >> MMCI_##name##_OFFSET)\ - & ((1 << MMCI_##name##_SIZE) - 1)) -#define MMCI_BFINS(name,value,old) \ - (((old) & ~(((1 << MMCI_##name##_SIZE) - 1) \ - << MMCI_##name##_OFFSET)) \ - | MMCI_BF(name,value)) - -/* Register access macros */ -#define mmci_readl(reg) \ - readl((void *)MMCI_BASE + MMCI_##reg) -#define mmci_writel(reg,value) \ - writel((value), (void *)MMCI_BASE + MMCI_##reg) - -#endif /* __CPU_AT32AP_ATMEL_MCI_H__ */ diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile index db92424585..3dc031b438 100644 --- a/drivers/mmc/Makefile +++ b/drivers/mmc/Makefile @@ -25,6 +25,8 @@ include $(TOPDIR)/config.mk LIB := $(obj)libmmc.a +COBJS-$(CONFIG_ATMEL_MCI) += atmel_mci.o + COBJS := $(COBJS-y) SRCS := $(COBJS:.o=.c) OBJS := $(addprefix $(obj),$(COBJS)) diff --git a/drivers/mmc/atmel_mci.c b/drivers/mmc/atmel_mci.c new file mode 100644 index 0000000000..61aa1849c2 --- /dev/null +++ b/drivers/mmc/atmel_mci.c @@ -0,0 +1,548 @@ +/* + * 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 + +#include +#include + +#include +#include +#include +#include +#include + +#include "atmel_mci.h" + +#ifdef DEBUG +#define pr_debug(fmt, args...) printf(fmt, ##args) +#else +#define pr_debug(...) do { } while(0) +#endif + +#ifndef CFG_MMC_CLK_OD +#define CFG_MMC_CLK_OD 150000 +#endif + +#ifndef CFG_MMC_CLK_PP +#define CFG_MMC_CLK_PP 5000000 +#endif + +#ifndef CFG_MMC_OP_COND +#define CFG_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%08lx\n", status); + + if (status & error_flags) { + printf("mmc: command %lu failed (status: 0x%08lx)\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 = %08x\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: %02lX\n", cid->mid); + printf("OEM/Application ID: %04lX\n", cid->oid); + printf("Product name: %s\n", cid->pnm); + printf("Product Revision: %lu.%lu\n", + cid->prv >> 4, cid->prv & 0x0f); + printf("Product Serial Number: %lu\n", cid->psn); + printf("Manufacturing Date: %02lu/%02lu\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, CFG_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, CFG_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) + * ((CFG_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_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(CFG_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 %08x", + 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(CFG_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; +} + +int mmc_read(ulong src, uchar *dst, int size) +{ + return -ENOSYS; +} + +int mmc_write(uchar *src, ulong dst, int size) +{ + return -ENOSYS; +} + +int mmc2info(ulong addr) +{ + return 0; +} diff --git a/drivers/mmc/atmel_mci.h b/drivers/mmc/atmel_mci.h new file mode 100644 index 0000000000..5b4f5c99b6 --- /dev/null +++ b/drivers/mmc/atmel_mci.h @@ -0,0 +1,201 @@ +/* + * Copyright (C) 2005-2006 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 + */ +#ifndef __CPU_AT32AP_ATMEL_MCI_H__ +#define __CPU_AT32AP_ATMEL_MCI_H__ + +/* Atmel MultiMedia Card Interface (MCI) registers */ +#define MMCI_CR 0x0000 +#define MMCI_MR 0x0004 +#define MMCI_DTOR 0x0008 +#define MMCI_SDCR 0x000c +#define MMCI_ARGR 0x0010 +#define MMCI_CMDR 0x0014 +#define MMCI_RSPR 0x0020 +#define MMCI_RSPR1 0x0024 +#define MMCI_RSPR2 0x0028 +#define MMCI_RSPR3 0x002c +#define MMCI_RDR 0x0030 +#define MMCI_TDR 0x0034 +#define MMCI_SR 0x0040 +#define MMCI_IER 0x0044 +#define MMCI_IDR 0x0048 +#define MMCI_IMR 0x004c + +/* Bitfields in CR */ +#define MMCI_MCIEN_OFFSET 0 +#define MMCI_MCIEN_SIZE 1 +#define MMCI_MCIDIS_OFFSET 1 +#define MMCI_MCIDIS_SIZE 1 +#define MMCI_PWSEN_OFFSET 2 +#define MMCI_PWSEN_SIZE 1 +#define MMCI_PWSDIS_OFFSET 3 +#define MMCI_PWSDIS_SIZE 1 +#define MMCI_SWRST_OFFSET 7 +#define MMCI_SWRST_SIZE 1 + +/* Bitfields in MR */ +#define MMCI_CLKDIV_OFFSET 0 +#define MMCI_CLKDIV_SIZE 8 +#define MMCI_PWSDIV_OFFSET 8 +#define MMCI_PWSDIV_SIZE 3 +#define MMCI_RDPROOF_OFFSET 11 +#define MMCI_RDPROOF_SIZE 1 +#define MMCI_WRPROOF_OFFSET 12 +#define MMCI_WRPROOF_SIZE 1 +#define MMCI_PDCPADV_OFFSET 14 +#define MMCI_PDCPADV_SIZE 1 +#define MMCI_PDCMODE_OFFSET 15 +#define MMCI_PDCMODE_SIZE 1 +#define MMCI_BLKLEN_OFFSET 16 +#define MMCI_BLKLEN_SIZE 16 + +/* Bitfields in DTOR */ +#define MMCI_DTOCYC_OFFSET 0 +#define MMCI_DTOCYC_SIZE 4 +#define MMCI_DTOMUL_OFFSET 4 +#define MMCI_DTOMUL_SIZE 3 + +/* Bitfields in SDCR */ +#define MMCI_SCDSEL_OFFSET 0 +#define MMCI_SCDSEL_SIZE 4 +#define MMCI_SCDBUS_OFFSET 7 +#define MMCI_SCDBUS_SIZE 1 + +/* Bitfields in ARGR */ +#define MMCI_ARG_OFFSET 0 +#define MMCI_ARG_SIZE 32 + +/* Bitfields in CMDR */ +#define MMCI_CMDNB_OFFSET 0 +#define MMCI_CMDNB_SIZE 6 +#define MMCI_RSPTYP_OFFSET 6 +#define MMCI_RSPTYP_SIZE 2 +#define MMCI_SPCMD_OFFSET 8 +#define MMCI_SPCMD_SIZE 3 +#define MMCI_OPDCMD_OFFSET 11 +#define MMCI_OPDCMD_SIZE 1 +#define MMCI_MAXLAT_OFFSET 12 +#define MMCI_MAXLAT_SIZE 1 +#define MMCI_TRCMD_OFFSET 16 +#define MMCI_TRCMD_SIZE 2 +#define MMCI_TRDIR_OFFSET 18 +#define MMCI_TRDIR_SIZE 1 +#define MMCI_TRTYP_OFFSET 19 +#define MMCI_TRTYP_SIZE 2 + +/* Bitfields in RSPRx */ +#define MMCI_RSP_OFFSET 0 +#define MMCI_RSP_SIZE 32 + +/* Bitfields in SR/IER/IDR/IMR */ +#define MMCI_CMDRDY_OFFSET 0 +#define MMCI_CMDRDY_SIZE 1 +#define MMCI_RXRDY_OFFSET 1 +#define MMCI_RXRDY_SIZE 1 +#define MMCI_TXRDY_OFFSET 2 +#define MMCI_TXRDY_SIZE 1 +#define MMCI_BLKE_OFFSET 3 +#define MMCI_BLKE_SIZE 1 +#define MMCI_DTIP_OFFSET 4 +#define MMCI_DTIP_SIZE 1 +#define MMCI_NOTBUSY_OFFSET 5 +#define MMCI_NOTBUSY_SIZE 1 +#define MMCI_ENDRX_OFFSET 6 +#define MMCI_ENDRX_SIZE 1 +#define MMCI_ENDTX_OFFSET 7 +#define MMCI_ENDTX_SIZE 1 +#define MMCI_RXBUFF_OFFSET 14 +#define MMCI_RXBUFF_SIZE 1 +#define MMCI_TXBUFE_OFFSET 15 +#define MMCI_TXBUFE_SIZE 1 +#define MMCI_RINDE_OFFSET 16 +#define MMCI_RINDE_SIZE 1 +#define MMCI_RDIRE_OFFSET 17 +#define MMCI_RDIRE_SIZE 1 +#define MMCI_RCRCE_OFFSET 18 +#define MMCI_RCRCE_SIZE 1 +#define MMCI_RENDE_OFFSET 19 +#define MMCI_RENDE_SIZE 1 +#define MMCI_RTOE_OFFSET 20 +#define MMCI_RTOE_SIZE 1 +#define MMCI_DCRCE_OFFSET 21 +#define MMCI_DCRCE_SIZE 1 +#define MMCI_DTOE_OFFSET 22 +#define MMCI_DTOE_SIZE 1 +#define MMCI_OVRE_OFFSET 30 +#define MMCI_OVRE_SIZE 1 +#define MMCI_UNRE_OFFSET 31 +#define MMCI_UNRE_SIZE 1 + +/* Constants for DTOMUL */ +#define MMCI_DTOMUL_1_CYCLE 0 +#define MMCI_DTOMUL_16_CYCLES 1 +#define MMCI_DTOMUL_128_CYCLES 2 +#define MMCI_DTOMUL_256_CYCLES 3 +#define MMCI_DTOMUL_1024_CYCLES 4 +#define MMCI_DTOMUL_4096_CYCLES 5 +#define MMCI_DTOMUL_65536_CYCLES 6 +#define MMCI_DTOMUL_1048576_CYCLES 7 + +/* Constants for RSPTYP */ +#define MMCI_RSPTYP_NO_RESP 0 +#define MMCI_RSPTYP_48_BIT_RESP 1 +#define MMCI_RSPTYP_136_BIT_RESP 2 + +/* Constants for SPCMD */ +#define MMCI_SPCMD_NO_SPEC_CMD 0 +#define MMCI_SPCMD_INIT_CMD 1 +#define MMCI_SPCMD_SYNC_CMD 2 +#define MMCI_SPCMD_INT_CMD 4 +#define MMCI_SPCMD_INT_RESP 5 + +/* Constants for TRCMD */ +#define MMCI_TRCMD_NO_TRANS 0 +#define MMCI_TRCMD_START_TRANS 1 +#define MMCI_TRCMD_STOP_TRANS 2 + +/* Constants for TRTYP */ +#define MMCI_TRTYP_BLOCK 0 +#define MMCI_TRTYP_MULTI_BLOCK 1 +#define MMCI_TRTYP_STREAM 2 + +/* Bit manipulation macros */ +#define MMCI_BIT(name) \ + (1 << MMCI_##name##_OFFSET) +#define MMCI_BF(name,value) \ + (((value) & ((1 << MMCI_##name##_SIZE) - 1)) \ + << MMCI_##name##_OFFSET) +#define MMCI_BFEXT(name,value) \ + (((value) >> MMCI_##name##_OFFSET)\ + & ((1 << MMCI_##name##_SIZE) - 1)) +#define MMCI_BFINS(name,value,old) \ + (((old) & ~(((1 << MMCI_##name##_SIZE) - 1) \ + << MMCI_##name##_OFFSET)) \ + | MMCI_BF(name,value)) + +/* Register access macros */ +#define mmci_readl(reg) \ + readl((void *)MMCI_BASE + MMCI_##reg) +#define mmci_writel(reg,value) \ + writel((value), (void *)MMCI_BASE + MMCI_##reg) + +#endif /* __CPU_AT32AP_ATMEL_MCI_H__ */ -- cgit v1.2.3