Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfashe...

[linux-2.6] / drivers / mmc / core / sdio_ops.c

diff --git a/drivers/mmc/core/sdio_ops.c b/drivers/mmc/core/sdio_ops.c
index d6f9f9d8517860ec99c7dd00e294f1dac9180169..c8fa095a4488689bb9ae35dee41bd482abe3a157 100644 (file)
--- a/drivers/mmc/core/sdio_ops.c
+++ b/drivers/mmc/core/sdio_ops.c
@@ -9,11 +9,15 @@
  * your option) any later version.
  */
 
+#include <linux/scatterlist.h>
+
 #include <linux/mmc/host.h>
+#include <linux/mmc/card.h>
 #include <linux/mmc/mmc.h>
 #include <linux/mmc/sdio.h>
 
 #include "core.h"
+#include "sdio_ops.h"
 
 int mmc_send_io_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
 {
@@ -26,24 +30,147 @@ int mmc_send_io_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
 
        cmd.opcode = SD_IO_SEND_OP_COND;
        cmd.arg = ocr;
-       cmd.flags = MMC_RSP_R4 | MMC_CMD_BCR;
+       cmd.flags = MMC_RSP_SPI_R4 | MMC_RSP_R4 | MMC_CMD_BCR;
 
        for (i = 100; i; i--) {
                err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
                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;
 
+               /* otherwise wait until reset completes */
+               if (mmc_host_is_spi(host)) {
+                       /*
+                        * Both R1_SPI_IDLE and MMC_CARD_BUSY indicate
+                        * an initialized card under SPI, but some cards
+                        * (Marvell's) only behave when looking at this
+                        * one.
+                        */
+                       if (cmd.resp[1] & MMC_CARD_BUSY)
+                               break;
+               } else {
+                       if (cmd.resp[0] & MMC_CARD_BUSY)
+                               break;
+               }
+
                err = -ETIMEDOUT;
 
                mmc_delay(10);
        }
 
        if (rocr)
-               *rocr = cmd.resp[0];
+               *rocr = cmd.resp[mmc_host_is_spi(host) ? 1 : 0];
 
        return err;
 }
 
+int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn,
+       unsigned addr, u8 in, u8* out)
+{
+       struct mmc_command cmd;
+       int err;
+
+       BUG_ON(!card);
+       BUG_ON(fn > 7);
+
+       memset(&cmd, 0, sizeof(struct mmc_command));
+
+       cmd.opcode = SD_IO_RW_DIRECT;
+       cmd.arg = write ? 0x80000000 : 0x00000000;
+       cmd.arg |= fn << 28;
+       cmd.arg |= (write && out) ? 0x08000000 : 0x00000000;
+       cmd.arg |= addr << 9;
+       cmd.arg |= in;
+       cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_AC;
+
+       err = mmc_wait_for_cmd(card->host, &cmd, 0);
+       if (err)
+               return err;
+
+       if (mmc_host_is_spi(card->host)) {
+               /* host driver already reported errors */
+       } else {
+               if (cmd.resp[0] & R5_ERROR)
+                       return -EIO;
+               if (cmd.resp[0] & R5_FUNCTION_NUMBER)
+                       return -EINVAL;
+               if (cmd.resp[0] & R5_OUT_OF_RANGE)
+                       return -ERANGE;
+       }
+
+       if (out) {
+               if (mmc_host_is_spi(card->host))
+                       *out = (cmd.resp[0] >> 8) & 0xFF;
+               else
+                       *out = cmd.resp[0] & 0xFF;
+       }
+
+       return 0;
+}
+
+int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
+       unsigned addr, int incr_addr, u8 *buf, unsigned blocks, unsigned blksz)
+{
+       struct mmc_request mrq;
+       struct mmc_command cmd;
+       struct mmc_data data;
+       struct scatterlist sg;
+
+       BUG_ON(!card);
+       BUG_ON(fn > 7);
+       BUG_ON(blocks == 1 && blksz > 512);
+       WARN_ON(blocks == 0);
+       WARN_ON(blksz == 0);
+
+       memset(&mrq, 0, sizeof(struct mmc_request));
+       memset(&cmd, 0, sizeof(struct mmc_command));
+       memset(&data, 0, sizeof(struct mmc_data));
+
+       mrq.cmd = &cmd;
+       mrq.data = &data;
+
+       cmd.opcode = SD_IO_RW_EXTENDED;
+       cmd.arg = write ? 0x80000000 : 0x00000000;
+       cmd.arg |= fn << 28;
+       cmd.arg |= incr_addr ? 0x04000000 : 0x00000000;
+       cmd.arg |= addr << 9;
+       if (blocks == 1 && blksz <= 512)
+               cmd.arg |= (blksz == 512) ? 0 : blksz;  /* byte mode */
+       else
+               cmd.arg |= 0x08000000 | blocks;         /* block mode */
+       cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
+
+       data.blksz = blksz;
+       data.blocks = blocks;
+       data.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
+       data.sg = &sg;
+       data.sg_len = 1;
+
+       sg_init_one(&sg, buf, blksz * blocks);
+
+       mmc_set_data_timeout(&data, card);
+
+       mmc_wait_for_req(card->host, &mrq);
+
+       if (cmd.error)
+               return cmd.error;
+       if (data.error)
+               return data.error;
+
+       if (mmc_host_is_spi(card->host)) {
+               /* host driver already reported errors */
+       } else {
+               if (cmd.resp[0] & R5_ERROR)
+                       return -EIO;
+               if (cmd.resp[0] & R5_FUNCTION_NUMBER)
+                       return -EINVAL;
+               if (cmd.resp[0] & R5_OUT_OF_RANGE)
+                       return -ERANGE;
+       }
+
+       return 0;
+}
+