ATMEL: remove old atmel_mci driver

All boards are using the gen_atmel_mci driver now, so no need to carry the old driver around. Signed-off-by: Sven Schnelle <svens@stackframe.org> Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>

ATMEL: remove old atmel_mci driver
All boards are using the gen_atmel_mci driver now, so no need to carry the old driver around. Signed-off-by: Sven Schnelle <svens@stackframe.org> Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Sven Schnelle · Andreas Bießmann
1 parent 72fa467988
Showing 5 changed files with 3 additions and 537 deletions Side-by-side Diff
arch/arm/cpu/arm926ejs/at91/at91sam9260_devices.c
arch/avr32/lib/board.c
doc/README.atmel_mci
drivers/mmc/Makefile
drivers/mmc/atmel_mci.c
@@ -196,7 +196,7 @@
 }
 #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 */
@@ -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;
@@ -20,7 +20,7 @@
  
 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 */
@@ -25,7 +25,6 @@
  
 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
-/*
- * 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;
-}
...	...	@@ -196,7 +196,7 @@
196	196	}
197	197	#endif
198	198
199		-#if defined(CONFIG_ATMEL_MCI) \|\| defined(CONFIG_GENERIC_ATMEL_MCI)
	199	+#if defined(CONFIG_GENERIC_ATMEL_MCI)
200	200	void at91_mci_hw_init(void)
201	201	{
202	202	at91_set_a_periph(AT91_PIO_PORTA, 8, 1); /* MCCK */
...	...	@@ -39,7 +39,7 @@
39	39	#define CONFIG_IDENT_STRING ""
40	40	#endif
41	41
42		-#ifdef CONFIG_ATMEL_MCI
	42	+#ifdef CONFIG_GENERIC_ATMEL_MCI
43	43	#include <mmc.h>
44	44	#endif
45	45	DECLARE_GLOBAL_DATA_PTR;
...	...	@@ -20,7 +20,7 @@
20	20
21	21	example: this is added to at91sam9260_devices.c:
22	22
23		-#if defined(CONFIG_ATMEL_MCI) \|\| defined(CONFIG_GENERIC_ATMEL_MCI)
	23	+#if defined(CONFIG_GENERIC_ATMEL_MCI)
24	24	void at91_mci_hw_init(void)
25	25	{
26	26	at91_set_a_periph(AT91_PIO_PORTA, 8, PUP); /* MCCK */
...	...	@@ -25,7 +25,6 @@
25	25
26	26	LIB := $(obj)libmmc.o
27	27
28		-COBJS-$(CONFIG_ATMEL_MCI) += atmel_mci.o
29	28	COBJS-$(CONFIG_BFIN_SDH) += bfin_sdh.o
30	29	COBJS-$(CONFIG_DAVINCI_MMC) += davinci_mmc.o
31	30	COBJS-$(CONFIG_FSL_ESDHC) += fsl_esdhc.o
1		-/*
2		- * Copyright (C) 2004-2006 Atmel Corporation
3		- *
4		- * See file CREDITS for list of people who contributed to this
5		- * project.
6		- *
7		- * This program is free software; you can redistribute it and/or
8		- * modify it under the terms of the GNU General Public License as
9		- * published by the Free Software Foundation; either version 2 of
10		- * the License, or (at your option) any later version.
11		- *
12		- * This program is distributed in the hope that it will be useful,
13		- * but WITHOUT ANY WARRANTY; without even the implied warranty of
14		- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15		- * GNU General Public License for more details.
16		- *
17		- * You should have received a copy of the GNU General Public License
18		- * along with this program; if not, write to the Free Software
19		- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20		- * MA 02111-1307 USA
21		- */
22		-#include <common.h>
23		-
24		-#include <part.h>
25		-#include <mmc.h>
26		-
27		-#include <asm/io.h>
28		-#include <asm/errno.h>
29		-#include <asm/byteorder.h>
30		-#include <asm/arch/clk.h>
31		-#include <asm/arch/hardware.h>
32		-
33		-#include "atmel_mci.h"
34		-
35		-#ifdef DEBUG
36		-#define pr_debug(fmt, args...) printf(fmt, ##args)
37		-#else
38		-#define pr_debug(...) do { } while(0)
39		-#endif
40		-
41		-#ifndef CONFIG_SYS_MMC_CLK_OD
42		-#define CONFIG_SYS_MMC_CLK_OD 150000
43		-#endif
44		-
45		-#ifndef CONFIG_SYS_MMC_CLK_PP
46		-#define CONFIG_SYS_MMC_CLK_PP 5000000
47		-#endif
48		-
49		-#ifndef CONFIG_SYS_MMC_OP_COND
50		-#define CONFIG_SYS_MMC_OP_COND 0x00100000
51		-#endif
52		-
53		-#define MMC_DEFAULT_BLKLEN 512
54		-#define MMC_DEFAULT_RCA 1
55		-
56		-static unsigned int mmc_rca;
57		-static int mmc_card_is_sd;
58		-static block_dev_desc_t mmc_blkdev;
59		-
60		-block_dev_desc_t *mmc_get_dev(int dev)
61		-{
62		- return &mmc_blkdev;
63		-}
64		-
65		-static void mci_set_mode(unsigned long hz, unsigned long blklen)
66		-{
67		- unsigned long bus_hz;
68		- unsigned long clkdiv;
69		-
70		- bus_hz = get_mci_clk_rate();
71		- clkdiv = (bus_hz / hz) / 2 - 1;
72		-
73		- pr_debug("mmc: setting clock %lu Hz, block size %lu\n",
74		- hz, blklen);
75		-
76		- if (clkdiv & ~255UL) {
77		- clkdiv = 255;
78		- printf("mmc: clock %lu too low; setting CLKDIV to 255\n",
79		- hz);
80		- }
81		-
82		- blklen &= 0xfffc;
83		- mmci_writel(MR, (MMCI_BF(CLKDIV, clkdiv)
84		- \| MMCI_BF(BLKLEN, blklen)
85		- \| MMCI_BIT(RDPROOF)
86		- \| MMCI_BIT(WRPROOF)));
87		-}
88		-
89		-#define RESP_NO_CRC 1
90		-#define R1 MMCI_BF(RSPTYP, 1)
91		-#define R2 MMCI_BF(RSPTYP, 2)
92		-#define R3 (R1 \| RESP_NO_CRC)
93		-#define R6 R1
94		-#define NID MMCI_BF(MAXLAT, 0)
95		-#define NCR MMCI_BF(MAXLAT, 1)
96		-#define TRCMD_START MMCI_BF(TRCMD, 1)
97		-#define TRDIR_READ MMCI_BF(TRDIR, 1)
98		-#define TRTYP_BLOCK MMCI_BF(TRTYP, 0)
99		-#define INIT_CMD MMCI_BF(SPCMD, 1)
100		-#define OPEN_DRAIN MMCI_BF(OPDCMD, 1)
101		-
102		-#define ERROR_FLAGS (MMCI_BIT(DTOE) \
103		- \| MMCI_BIT(RDIRE) \
104		- \| MMCI_BIT(RENDE) \
105		- \| MMCI_BIT(RINDE) \
106		- \| MMCI_BIT(RTOE))
107		-
108		-static int
109		-mmc_cmd(unsigned long cmd, unsigned long arg,
110		- void *resp, unsigned long flags)
111		-{
112		- unsigned long *response = resp;
113		- int i, response_words = 0;
114		- unsigned long error_flags;
115		- u32 status;
116		-
117		- pr_debug("mmc: CMD%lu 0x%lx (flags 0x%lx)\n",
118		- cmd, arg, flags);
119		-
120		- error_flags = ERROR_FLAGS;
121		- if (!(flags & RESP_NO_CRC))
122		- error_flags \|= MMCI_BIT(RCRCE);
123		-
124		- flags &= ~MMCI_BF(CMDNB, ~0UL);
125		-
126		- if (MMCI_BFEXT(RSPTYP, flags) == MMCI_RSPTYP_48_BIT_RESP)
127		- response_words = 1;
128		- else if (MMCI_BFEXT(RSPTYP, flags) == MMCI_RSPTYP_136_BIT_RESP)
129		- response_words = 4;
130		-
131		- mmci_writel(ARGR, arg);
132		- mmci_writel(CMDR, cmd \| flags);
133		- do {
134		- udelay(40);
135		- status = mmci_readl(SR);
136		- } while (!(status & MMCI_BIT(CMDRDY)));
137		-
138		- pr_debug("mmc: status 0x%08x\n", status);
139		-
140		- if (status & error_flags) {
141		- printf("mmc: command %lu failed (status: 0x%08x)\n",
142		- cmd, status);
143		- return -EIO;
144		- }
145		-
146		- if (response_words)
147		- pr_debug("mmc: response:");
148		-
149		- for (i = 0; i < response_words; i++) {
150		- response[i] = mmci_readl(RSPR);
151		- pr_debug(" %08lx", response[i]);
152		- }
153		- pr_debug("\n");
154		-
155		- return 0;
156		-}
157		-
158		-static int mmc_acmd(unsigned long cmd, unsigned long arg,
159		- void *resp, unsigned long flags)
160		-{
161		- unsigned long aresp[4];
162		- int ret;
163		-
164		- /*
165		- * Seems like the APP_CMD part of an ACMD has 64 cycles max
166		- * latency even though the ACMD part doesn't. This isn't
167		- * entirely clear in the SD Card spec, but some cards refuse
168		- * to work if we attempt to use 5 cycles max latency here...
169		- */
170		- ret = mmc_cmd(MMC_CMD_APP_CMD, 0, aresp,
171		- R1 \| NCR \| (flags & OPEN_DRAIN));
172		- if (ret)
173		- return ret;
174		- if ((aresp[0] & (R1_ILLEGAL_COMMAND \| R1_APP_CMD)) != R1_APP_CMD)
175		- return -ENODEV;
176		-
177		- ret = mmc_cmd(cmd, arg, resp, flags);
178		- return ret;
179		-}
180		-
181		-static unsigned long
182		-mmc_bread(int dev, unsigned long start, lbaint_t blkcnt,
183		- void *buffer)
184		-{
185		- int ret, i = 0;
186		- unsigned long resp[4];
187		- unsigned long card_status, data;
188		- unsigned long wordcount;
189		- u32 *p = buffer;
190		- u32 status;
191		-
192		- if (blkcnt == 0)
193		- return 0;
194		-
195		- pr_debug("mmc_bread: dev %d, start %lx, blkcnt %lx\n",
196		- dev, start, blkcnt);
197		-
198		- /* Put the device into Transfer state */
199		- ret = mmc_cmd(MMC_CMD_SELECT_CARD, mmc_rca << 16, resp, R1 \| NCR);
200		- if (ret) goto out;
201		-
202		- /* Set block length */
203		- ret = mmc_cmd(MMC_CMD_SET_BLOCKLEN, mmc_blkdev.blksz, resp, R1 \| NCR);
204		- if (ret) goto out;
205		-
206		- pr_debug("MCI_DTOR = %08lx\n", mmci_readl(DTOR));
207		-
208		- for (i = 0; i < blkcnt; i++, start++) {
209		- ret = mmc_cmd(MMC_CMD_READ_SINGLE_BLOCK,
210		- start * mmc_blkdev.blksz, resp,
211		- (R1 \| NCR \| TRCMD_START \| TRDIR_READ
212		- \| TRTYP_BLOCK));
213		- if (ret) goto out;
214		-
215		- ret = -EIO;
216		- wordcount = 0;
217		- do {
218		- do {
219		- status = mmci_readl(SR);
220		- if (status & (ERROR_FLAGS \| MMCI_BIT(OVRE)))
221		- goto read_error;
222		- } while (!(status & MMCI_BIT(RXRDY)));
223		-
224		- if (status & MMCI_BIT(RXRDY)) {
225		- data = mmci_readl(RDR);
226		- /* pr_debug("%x\n", data); */
227		- *p++ = data;
228		- wordcount++;
229		- }
230		- } while(wordcount < (mmc_blkdev.blksz / 4));
231		-
232		- pr_debug("mmc: read %u words, waiting for BLKE\n", wordcount);
233		-
234		- do {
235		- status = mmci_readl(SR);
236		- } while (!(status & MMCI_BIT(BLKE)));
237		-
238		- putc('.');
239		- }
240		-
241		-out:
242		- /* Put the device back into Standby state */
243		- mmc_cmd(MMC_CMD_SELECT_CARD, 0, resp, NCR);
244		- return i;
245		-
246		-read_error:
247		- mmc_cmd(MMC_CMD_SEND_STATUS, mmc_rca << 16, &card_status, R1 \| NCR);
248		- printf("mmc: bread failed, status = %08x, card status = %08lx\n",
249		- status, card_status);
250		- goto out;
251		-}
252		-
253		-static void mmc_parse_cid(struct mmc_cid cid, unsigned long resp)
254		-{
255		- cid->mid = resp[0] >> 24;
256		- cid->oid = (resp[0] >> 8) & 0xffff;
257		- cid->pnm[0] = resp[0];
258		- cid->pnm[1] = resp[1] >> 24;
259		- cid->pnm[2] = resp[1] >> 16;
260		- cid->pnm[3] = resp[1] >> 8;
261		- cid->pnm[4] = resp[1];
262		- cid->pnm[5] = resp[2] >> 24;
263		- cid->pnm[6] = 0;
264		- cid->prv = resp[2] >> 16;
265		- cid->psn = (resp[2] << 16) \| (resp[3] >> 16);
266		- cid->mdt = resp[3] >> 8;
267		-}
268		-
269		-static void sd_parse_cid(struct mmc_cid cid, unsigned long resp)
270		-{
271		- cid->mid = resp[0] >> 24;
272		- cid->oid = (resp[0] >> 8) & 0xffff;
273		- cid->pnm[0] = resp[0];
274		- cid->pnm[1] = resp[1] >> 24;
275		- cid->pnm[2] = resp[1] >> 16;
276		- cid->pnm[3] = resp[1] >> 8;
277		- cid->pnm[4] = resp[1];
278		- cid->pnm[5] = 0;
279		- cid->pnm[6] = 0;
280		- cid->prv = resp[2] >> 24;
281		- cid->psn = (resp[2] << 8) \| (resp[3] >> 24);
282		- cid->mdt = (resp[3] >> 8) & 0x0fff;
283		-}
284		-
285		-static void mmc_dump_cid(const struct mmc_cid *cid)
286		-{
287		- printf("Manufacturer ID: %02X\n", cid->mid);
288		- printf("OEM/Application ID: %04X\n", cid->oid);
289		- printf("Product name: %s\n", cid->pnm);
290		- printf("Product Revision: %u.%u\n",
291		- cid->prv >> 4, cid->prv & 0x0f);
292		- printf("Product Serial Number: %lu\n", cid->psn);
293		- printf("Manufacturing Date: %02u/%02u\n",
294		- cid->mdt >> 4, cid->mdt & 0x0f);
295		-}
296		-
297		-static void mmc_dump_csd(const struct mmc_csd *csd)
298		-{
299		- unsigned long csd_raw = (unsigned long )csd;
300		- printf("CSD data: %08lx %08lx %08lx %08lx\n",
301		- csd_raw[0], csd_raw[1], csd_raw[2], csd_raw[3]);
302		- printf("CSD structure version: 1.%u\n", csd->csd_structure);
303		- printf("MMC System Spec version: %u\n", csd->spec_vers);
304		- printf("Card command classes: %03x\n", csd->ccc);
305		- printf("Read block length: %u\n", 1 << csd->read_bl_len);
306		- if (csd->read_bl_partial)
307		- puts("Supports partial reads\n");
308		- else
309		- puts("Does not support partial reads\n");
310		- printf("Write block length: %u\n", 1 << csd->write_bl_len);
311		- if (csd->write_bl_partial)
312		- puts("Supports partial writes\n");
313		- else
314		- puts("Does not support partial writes\n");
315		- if (csd->wp_grp_enable)
316		- printf("Supports group WP: %u\n", csd->wp_grp_size + 1);
317		- else
318		- puts("Does not support group WP\n");
319		- printf("Card capacity: %u bytes\n",
320		- (csd->c_size + 1) * (1 << (csd->c_size_mult + 2)) *
321		- (1 << csd->read_bl_len));
322		- printf("File format: %u/%u\n",
323		- csd->file_format_grp, csd->file_format);
324		- puts("Write protection: ");
325		- if (csd->perm_write_protect)
326		- puts(" permanent");
327		- if (csd->tmp_write_protect)
328		- puts(" temporary");
329		- putc('\n');
330		-}
331		-
332		-static int mmc_idle_cards(void)
333		-{
334		- int ret;
335		-
336		- /* Reset and initialize all cards */
337		- ret = mmc_cmd(MMC_CMD_GO_IDLE_STATE, 0, NULL, 0);
338		- if (ret)
339		- return ret;
340		-
341		- /* Keep the bus idle for 74 clock cycles */
342		- return mmc_cmd(0, 0, NULL, INIT_CMD);
343		-}
344		-
345		-static int sd_init_card(struct mmc_cid *cid, int verbose)
346		-{
347		- unsigned long resp[4];
348		- int i, ret = 0;
349		-
350		- mmc_idle_cards();
351		- for (i = 0; i < 1000; i++) {
352		- ret = mmc_acmd(SD_CMD_APP_SEND_OP_COND, CONFIG_SYS_MMC_OP_COND,
353		- resp, R3 \| NID);
354		- if (ret \|\| (resp[0] & 0x80000000))
355		- break;
356		- ret = -ETIMEDOUT;
357		- }
358		-
359		- if (ret)
360		- return ret;
361		-
362		- ret = mmc_cmd(MMC_CMD_ALL_SEND_CID, 0, resp, R2 \| NID);
363		- if (ret)
364		- return ret;
365		- sd_parse_cid(cid, resp);
366		- if (verbose)
367		- mmc_dump_cid(cid);
368		-
369		- /* Get RCA of the card that responded */
370		- ret = mmc_cmd(SD_CMD_SEND_RELATIVE_ADDR, 0, resp, R6 \| NCR);
371		- if (ret)
372		- return ret;
373		-
374		- mmc_rca = resp[0] >> 16;
375		- if (verbose)
376		- printf("SD Card detected (RCA %u)\n", mmc_rca);
377		- mmc_card_is_sd = 1;
378		- return 0;
379		-}
380		-
381		-static int mmc_init_card(struct mmc_cid *cid, int verbose)
382		-{
383		- unsigned long resp[4];
384		- int i, ret = 0;
385		-
386		- mmc_idle_cards();
387		- for (i = 0; i < 1000; i++) {
388		- ret = mmc_cmd(MMC_CMD_SEND_OP_COND, CONFIG_SYS_MMC_OP_COND, resp,
389		- R3 \| NID \| OPEN_DRAIN);
390		- if (ret \|\| (resp[0] & 0x80000000))
391		- break;
392		- ret = -ETIMEDOUT;
393		- }
394		-
395		- if (ret)
396		- return ret;
397		-
398		- /* Get CID of all cards. FIXME: Support more than one card */
399		- ret = mmc_cmd(MMC_CMD_ALL_SEND_CID, 0, resp, R2 \| NID \| OPEN_DRAIN);
400		- if (ret)
401		- return ret;
402		- mmc_parse_cid(cid, resp);
403		- if (verbose)
404		- mmc_dump_cid(cid);
405		-
406		- /* Set Relative Address of the card that responded */
407		- ret = mmc_cmd(MMC_CMD_SET_RELATIVE_ADDR, mmc_rca << 16, resp,
408		- R1 \| NCR \| OPEN_DRAIN);
409		- return ret;
410		-}
411		-
412		-static void mci_set_data_timeout(struct mmc_csd *csd)
413		-{
414		- static const unsigned int dtomul_to_shift[] = {
415		- 0, 4, 7, 8, 10, 12, 16, 20,
416		- };
417		- static const unsigned int taac_exp[] = {
418		- 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000,
419		- };
420		- static const unsigned int taac_mant[] = {
421		- 0, 10, 12, 13, 15, 60, 25, 30,
422		- 35, 40, 45, 50, 55, 60, 70, 80,
423		- };
424		- unsigned int timeout_ns, timeout_clks;
425		- unsigned int e, m;
426		- unsigned int dtocyc, dtomul;
427		- unsigned int shift;
428		- u32 dtor;
429		-
430		- e = csd->taac & 0x07;
431		- m = (csd->taac >> 3) & 0x0f;
432		-
433		- timeout_ns = (taac_exp[e] * taac_mant[m] + 9) / 10;
434		- timeout_clks = csd->nsac * 100;
435		-
436		- timeout_clks += (((timeout_ns + 9) / 10)
437		- * ((CONFIG_SYS_MMC_CLK_PP + 99999) / 100000) + 9999) / 10000;
438		- if (!mmc_card_is_sd)
439		- timeout_clks *= 10;
440		- else
441		- timeout_clks *= 100;
442		-
443		- dtocyc = timeout_clks;
444		- dtomul = 0;
445		- shift = 0;
446		- while (dtocyc > 15 && dtomul < 8) {
447		- dtomul++;
448		- shift = dtomul_to_shift[dtomul];
449		- dtocyc = (timeout_clks + (1 << shift) - 1) >> shift;
450		- }
451		-
452		- if (dtomul >= 8) {
453		- dtomul = 7;
454		- dtocyc = 15;
455		- puts("Warning: Using maximum data timeout\n");
456		- }
457		-
458		- dtor = (MMCI_BF(DTOMUL, dtomul)
459		- \| MMCI_BF(DTOCYC, dtocyc));
460		- mmci_writel(DTOR, dtor);
461		-
462		- printf("mmc: Using %u cycles data timeout (DTOR=0x%x)\n",
463		- dtocyc << shift, dtor);
464		-}
465		-
466		-int mmc_legacy_init(int verbose)
467		-{
468		- struct mmc_cid cid;
469		- struct mmc_csd csd;
470		- unsigned int max_blksz;
471		- int ret;
472		-
473		- /* Initialize controller */
474		- mmci_writel(CR, MMCI_BIT(SWRST));
475		- mmci_writel(CR, MMCI_BIT(MCIEN));
476		- mmci_writel(DTOR, 0x5f);
477		- mmci_writel(IDR, ~0UL);
478		- mci_set_mode(CONFIG_SYS_MMC_CLK_OD, MMC_DEFAULT_BLKLEN);
479		-
480		- mmc_card_is_sd = 0;
481		-
482		- ret = sd_init_card(&cid, verbose);
483		- if (ret) {
484		- mmc_rca = MMC_DEFAULT_RCA;
485		- ret = mmc_init_card(&cid, verbose);
486		- }
487		- if (ret)
488		- return ret;
489		-
490		- /* Get CSD from the card */
491		- ret = mmc_cmd(MMC_CMD_SEND_CSD, mmc_rca << 16, &csd, R2 \| NCR);
492		- if (ret)
493		- return ret;
494		- if (verbose)
495		- mmc_dump_csd(&csd);
496		-
497		- mci_set_data_timeout(&csd);
498		-
499		- /* Initialize the blockdev structure */
500		- mmc_blkdev.if_type = IF_TYPE_MMC;
501		- mmc_blkdev.part_type = PART_TYPE_DOS;
502		- mmc_blkdev.block_read = mmc_bread;
503		- sprintf((char *)mmc_blkdev.vendor,
504		- "Man %02x%04x Snr %08lx",
505		- cid.mid, cid.oid, cid.psn);
506		- strncpy((char *)mmc_blkdev.product, cid.pnm,
507		- sizeof(mmc_blkdev.product));
508		- sprintf((char *)mmc_blkdev.revision, "%x %x",
509		- cid.prv >> 4, cid.prv & 0x0f);
510		-
511		- /*
512		- * If we can't use 512 byte blocks, refuse to deal with the
513		- * card. Tons of code elsewhere seems to depend on this.
514		- */
515		- max_blksz = 1 << csd.read_bl_len;
516		- if (max_blksz < 512 \|\| (max_blksz > 512 && !csd.read_bl_partial)) {
517		- printf("Card does not support 512 byte reads, aborting.\n");
518		- return -ENODEV;
519		- }
520		- mmc_blkdev.blksz = 512;
521		- mmc_blkdev.lba = (csd.c_size + 1) * (1 << (csd.c_size_mult + 2));
522		-
523		- mci_set_mode(CONFIG_SYS_MMC_CLK_PP, mmc_blkdev.blksz);
524		-
525		-#if 0
526		- if (fat_register_device(&mmc_blkdev, 1))
527		- printf("Could not register MMC fat device\n");
528		-#else
529		- init_part(&mmc_blkdev);
530		-#endif
531		-
532		- return 0;
533		-}