diff options
| author | Ben Dooks <ben@simtec.co.uk> | 2009-06-14 13:52:38 +0100 |
|---|---|---|
| committer | Pierre Ossman <pierre@ossman.eu> | 2009-06-21 21:00:58 +0200 |
| commit | 6882a8c071d609f4c088bee41e79572c7cfc1790 (patch) | |
| tree | 563dd6353135c2332ece3751492a690d28bca2e2 /drivers | |
| parent | 0d1bb41ad4ebca92fafbab6d6c60438d7efef386 (diff) | |
| download | linux-6882a8c071d609f4c088bee41e79572c7cfc1790.tar.bz2 | |
sdhci: Add better ADMA error reporting
Update the ADMA error reporting to not only show the
overall controller state but also to print the ADMA
descriptor list.
Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Pierre Ossman <pierre@ossman.eu>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 35789c6edc19..e54d6fba85e1 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1382,6 +1382,35 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask) sdhci_finish_command(host); } +#ifdef DEBUG +static void sdhci_show_adma_error(struct sdhci_host *host) +{ + const char *name = mmc_hostname(host->mmc); + u8 *desc = host->adma_desc; + __le32 *dma; + __le16 *len; + u8 attr; + + sdhci_dumpregs(host); + + while (true) { + dma = (__le32 *)(desc + 4); + len = (__le16 *)(desc + 2); + attr = *desc; + + DBG("%s: %p: DMA 0x%08x, LEN 0x%04x, Attr=0x%02x\n", + name, desc, le32_to_cpu(*dma), le16_to_cpu(*len), attr); + + desc += 8; + + if (attr & 2) + break; + } +} +#else +static void sdhci_show_adma_error(struct sdhci_host *host) { } +#endif + static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) { BUG_ON(intmask == 0); @@ -1411,8 +1440,11 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) host->data->error = -ETIMEDOUT; else if (intmask & (SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_END_BIT)) host->data->error = -EILSEQ; - else if (intmask & SDHCI_INT_ADMA_ERROR) + else if (intmask & SDHCI_INT_ADMA_ERROR) { + printk(KERN_ERR "%s: ADMA error\n", mmc_hostname(host->mmc)); + sdhci_show_adma_error(host); host->data->error = -EIO; + } if (host->data->error) sdhci_finish_data(host); |