diff options
author | Nicolas Ferre <nicolas.ferre@atmel.com> | 2008-05-30 12:18:57 (GMT) |
---|---|---|
committer | Pierre Ossman <drzeus@drzeus.cx> | 2008-07-15 12:14:42 (GMT) |
commit | 4ac24a8722b97d5b4cfc48a4fbd0b2489e358d4d (patch) | |
tree | f9532aa124b8ab250bf3bec4648ed42621389c3c /drivers/mmc | |
parent | c5a89c6c0805959f813e8342d6f4040860f6d7db (diff) | |
download | linux-4ac24a8722b97d5b4cfc48a4fbd0b2489e358d4d.tar.xz |
mmc: at91_mci: update bytes_xfered value once xfer done
Modify bytes_xfered value after a write.
That will report, as accurately as possible, the amount of
sectors that are effectively written.
This update introduces the check of the busy signal given by
the card.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Diffstat (limited to 'drivers/mmc')
-rw-r--r-- | drivers/mmc/host/at91_mci.c | 40 |
1 files changed, 34 insertions, 6 deletions
diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c index e924211..b5a6e25 100644 --- a/drivers/mmc/host/at91_mci.c +++ b/drivers/mmc/host/at91_mci.c @@ -340,8 +340,6 @@ static void at91_mci_post_dma_read(struct at91mci_host *host) dma_unmap_page(NULL, sg->dma_address, sg->length, DMA_FROM_DEVICE); - data->bytes_xfered += sg->length; - if (cpu_is_at91rm9200()) { /* AT91RM9200 errata */ unsigned int *buffer; int index; @@ -357,6 +355,8 @@ static void at91_mci_post_dma_read(struct at91mci_host *host) } flush_dcache_page(sg_page(sg)); + + data->bytes_xfered += sg->length; } /* Is there another transfer to trigger? */ @@ -397,10 +397,32 @@ static void at91_mci_handle_transmitted(struct at91mci_host *host) at91_mci_write(host, AT91_MCI_IER, AT91_MCI_BLKE); } else at91_mci_write(host, AT91_MCI_IER, AT91_MCI_NOTBUSY); +} + +/* + * Update bytes tranfered count during a write operation + */ +static void at91_mci_update_bytes_xfered(struct at91mci_host *host) +{ + struct mmc_data *data; - data->bytes_xfered = host->total_length; + /* always deal with the effective request (and not the current cmd) */ + + if (host->request->cmd && host->request->cmd->error != 0) + return; + + if (host->request->data) { + data = host->request->data; + if (data->flags & MMC_DATA_WRITE) { + /* card is in IDLE mode now */ + pr_debug("-> bytes_xfered %d, total_length = %d\n", + data->bytes_xfered, host->total_length); + data->bytes_xfered = host->total_length; + } + } } + /*Handle after command sent ready*/ static int at91_mci_handle_cmdrdy(struct at91mci_host *host) { @@ -413,8 +435,7 @@ static int at91_mci_handle_cmdrdy(struct at91mci_host *host) } else return 1; } else if (host->cmd->data->flags & MMC_DATA_WRITE) { /*After sendding multi-block-write command, start DMA transfer*/ - at91_mci_write(host, AT91_MCI_IER, AT91_MCI_TXBUFE); - at91_mci_write(host, AT91_MCI_IER, AT91_MCI_BLKE); + at91_mci_write(host, AT91_MCI_IER, AT91_MCI_TXBUFE | AT91_MCI_BLKE); at91_mci_write(host, ATMEL_PDC_PTCR, ATMEL_PDC_TXTEN); } @@ -817,6 +838,7 @@ static irqreturn_t at91_mci_irq(int irq, void *devid) if (int_status & AT91_MCI_NOTBUSY) { pr_debug("Card is ready\n"); + at91_mci_update_bytes_xfered(host); completed = 1; } @@ -825,7 +847,13 @@ static irqreturn_t at91_mci_irq(int irq, void *devid) if (int_status & AT91_MCI_BLKE) { pr_debug("Block transfer has ended\n"); - completed = 1; + if (host->request->data && host->request->data->blocks > 1) { + /* multi block write : complete multi write + * command and send stop */ + completed = 1; + } else { + at91_mci_write(host, AT91_MCI_IER, AT91_MCI_NOTBUSY); + } } if (int_status & AT91_MCI_TXRDY) |