Commit c9abb426 authored by Sven Schnelle's avatar Sven Schnelle Committed by Andreas Bießmann
Browse files

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: default avatarSven Schnelle <svens@stackframe.org>
Signed-off-by: default avatarAndreas Bießmann <andreas.devel@googlemail.com>
parent 72fa4679
......@@ -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 */
......
......@@ -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 @@ 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 */
......
......@@ -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
......
/*
* 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;
}
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