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Commit 6882a8c0 authored by Ben Dooks's avatar Ben Dooks Committed by Pierre Ossman
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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: default avatarBen Dooks <ben@simtec.co.uk>
Signed-off-by: default avatarPierre Ossman <pierre@ossman.eu>
parent 0d1bb41a

drivers/mmc/host/sdhci.c

+33 −1
Original line number Diff line number Diff line
@@ -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);