redonkable/alistair23-linux
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sdhci: Add better ADMA error reporting

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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>
This commit is contained in:
Ben Dooks 2009-06-14 13:52:38 +01:00 committed by Pierre Ossman
parent 0d1bb41ad4
commit 6882a8c071
1 changed files with 33 additions and 1 deletions
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34
drivers/mmc/host/sdhci.c
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@ -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);