/*
- * linux/drivers/mmc/sd_ops.h
+ * linux/drivers/mmc/core/sd_ops.h
*
* Copyright 2006-2007 Pierre Ossman
*
*/
#include <linux/types.h>
-#include <asm/scatterlist.h>
#include <linux/scatterlist.h>
#include <linux/mmc/host.h>
#include "core.h"
#include "sd_ops.h"
+static int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card)
+{
+ int err;
+ struct mmc_command cmd;
+
+ BUG_ON(!host);
+ BUG_ON(card && (card->host != host));
+
+ cmd.opcode = MMC_APP_CMD;
+
+ if (card) {
+ cmd.arg = card->rca << 16;
+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
+ } else {
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_BCR;
+ }
+
+ err = mmc_wait_for_cmd(host, &cmd, 0);
+ if (err)
+ return err;
+
+ /* Check that card supported application commands */
+ if (!mmc_host_is_spi(host) && !(cmd.resp[0] & R1_APP_CMD))
+ return -EOPNOTSUPP;
+
+ return 0;
+}
+
/**
* mmc_wait_for_app_cmd - start an application command and wait for
completion
* @host: MMC host to start command
- * @rca: RCA to send MMC_APP_CMD to
+ * @card: Card to send MMC_APP_CMD to
* @cmd: MMC command to start
* @retries: maximum number of retries
*
BUG_ON(!cmd);
BUG_ON(retries < 0);
- err = MMC_ERR_INVALID;
+ err = -EIO;
/*
* We have to resend MMC_APP_CMD for each attempt so
* we cannot use the retries field in mmc_command.
*/
for (i = 0;i <= retries;i++) {
- memset(&mrq, 0, sizeof(struct mmc_request));
-
err = mmc_app_cmd(host, card);
- if (err != MMC_ERR_NONE)
+ if (err) {
+ /* no point in retrying; no APP commands allowed */
+ if (mmc_host_is_spi(host)) {
+ if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND)
+ break;
+ }
continue;
+ }
memset(&mrq, 0, sizeof(struct mmc_request));
mmc_wait_for_req(host, &mrq);
err = cmd->error;
- if (cmd->error == MMC_ERR_NONE)
+ if (!cmd->error)
break;
+
+ /* no point in retrying illegal APP commands */
+ if (mmc_host_is_spi(host)) {
+ if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND)
+ break;
+ }
}
return err;
EXPORT_SYMBOL(mmc_wait_for_app_cmd);
-int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card)
-{
- int err;
- struct mmc_command cmd;
-
- BUG_ON(!host);
- BUG_ON(card && (card->host != host));
-
- cmd.opcode = MMC_APP_CMD;
-
- if (card) {
- cmd.arg = card->rca << 16;
- cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
- } else {
- cmd.arg = 0;
- cmd.flags = MMC_RSP_R1 | MMC_CMD_BCR;
- }
-
- err = mmc_wait_for_cmd(host, &cmd, 0);
- if (err != MMC_ERR_NONE)
- return err;
-
- /* Check that card supported application commands */
- if (!(cmd.resp[0] & R1_APP_CMD))
- return MMC_ERR_FAILED;
-
- return MMC_ERR_NONE;
-}
-
int mmc_app_set_bus_width(struct mmc_card *card, int width)
{
int err;
cmd.arg = SD_BUS_WIDTH_4;
break;
default:
- return MMC_ERR_INVALID;
+ return -EINVAL;
}
err = mmc_wait_for_app_cmd(card->host, card, &cmd, MMC_CMD_RETRIES);
- if (err != MMC_ERR_NONE)
+ if (err)
return err;
- return MMC_ERR_NONE;
+ return 0;
}
int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = SD_APP_OP_COND;
- cmd.arg = ocr;
- cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
+ if (mmc_host_is_spi(host))
+ cmd.arg = ocr & (1 << 30); /* SPI only defines one bit */
+ else
+ cmd.arg = ocr;
+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R3 | MMC_CMD_BCR;
for (i = 100; i; i--) {
err = mmc_wait_for_app_cmd(host, NULL, &cmd, MMC_CMD_RETRIES);
- if (err != MMC_ERR_NONE)
+ if (err)
break;
- if (cmd.resp[0] & MMC_CARD_BUSY || ocr == 0)
+ /* if we're just probing, do a single pass */
+ if (ocr == 0)
break;
- err = MMC_ERR_TIMEOUT;
+ /* otherwise wait until reset completes */
+ if (mmc_host_is_spi(host)) {
+ if (!(cmd.resp[0] & R1_SPI_IDLE))
+ break;
+ } else {
+ if (cmd.resp[0] & MMC_CARD_BUSY)
+ break;
+ }
+
+ err = -ETIMEDOUT;
mmc_delay(10);
}
- if (rocr)
+ if (rocr && !mmc_host_is_spi(host))
*rocr = cmd.resp[0];
return err;
struct mmc_command cmd;
int err;
static const u8 test_pattern = 0xAA;
+ u8 result_pattern;
/*
* To support SD 2.0 cards, we must always invoke SD_SEND_IF_COND
*/
cmd.opcode = SD_SEND_IF_COND;
cmd.arg = ((ocr & 0xFF8000) != 0) << 8 | test_pattern;
- cmd.flags = MMC_RSP_R7 | MMC_CMD_BCR;
+ cmd.flags = MMC_RSP_SPI_R7 | MMC_RSP_R7 | MMC_CMD_BCR;
err = mmc_wait_for_cmd(host, &cmd, 0);
- if (err != MMC_ERR_NONE)
+ if (err)
return err;
- if ((cmd.resp[0] & 0xFF) != test_pattern)
- return MMC_ERR_FAILED;
+ if (mmc_host_is_spi(host))
+ result_pattern = cmd.resp[1] & 0xFF;
+ else
+ result_pattern = cmd.resp[0] & 0xFF;
- return MMC_ERR_NONE;
+ if (result_pattern != test_pattern)
+ return -EIO;
+
+ return 0;
}
int mmc_send_relative_addr(struct mmc_host *host, unsigned int *rca)
cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
- if (err != MMC_ERR_NONE)
+ if (err)
return err;
*rca = cmd.resp[0] >> 16;
- return MMC_ERR_NONE;
+ return 0;
}
int mmc_app_send_scr(struct mmc_card *card, u32 *scr)
BUG_ON(!card->host);
BUG_ON(!scr);
+ /* NOTE: caller guarantees scr is heap-allocated */
+
err = mmc_app_cmd(card->host, card);
- if (err != MMC_ERR_NONE)
+ if (err)
return err;
memset(&mrq, 0, sizeof(struct mmc_request));
cmd.opcode = SD_APP_SEND_SCR;
cmd.arg = 0;
- cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
data.blksz = 8;
data.blocks = 1;
sg_init_one(&sg, scr, 8);
- mmc_set_data_timeout(&data, card, 0);
+ mmc_set_data_timeout(&data, card);
mmc_wait_for_req(card->host, &mrq);
- if (cmd.error != MMC_ERR_NONE)
+ if (cmd.error)
return cmd.error;
- if (data.error != MMC_ERR_NONE)
+ if (data.error)
return data.error;
- scr[0] = ntohl(scr[0]);
- scr[1] = ntohl(scr[1]);
+ scr[0] = be32_to_cpu(scr[0]);
+ scr[1] = be32_to_cpu(scr[1]);
- return MMC_ERR_NONE;
+ return 0;
}
int mmc_sd_switch(struct mmc_card *card, int mode, int group,
BUG_ON(!card);
BUG_ON(!card->host);
+ /* NOTE: caller guarantees resp is heap-allocated */
+
mode = !!mode;
value &= 0xF;
cmd.arg = mode << 31 | 0x00FFFFFF;
cmd.arg &= ~(0xF << (group * 4));
cmd.arg |= value << (group * 4);
- cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+ cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC;
data.blksz = 64;
data.blocks = 1;
sg_init_one(&sg, resp, 64);
- mmc_set_data_timeout(&data, card, 0);
+ mmc_set_data_timeout(&data, card);
mmc_wait_for_req(card->host, &mrq);
- if (cmd.error != MMC_ERR_NONE)
+ if (cmd.error)
return cmd.error;
- if (data.error != MMC_ERR_NONE)
+ if (data.error)
return data.error;
- return MMC_ERR_NONE;
+ return 0;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff