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add debugging to MCI timeout

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This commit is contained in:
Ralph Metzler 2019-04-03 15:12:02 +02:00
parent 16b15dfcc0
commit ab59d9b705
1 changed files with 7 additions and 0 deletions
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7
ddbridge/ddbridge-mci.c
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@ -83,10 +83,17 @@ static int ddb_mci_cmd_raw_unlocked(struct mci *state,
stat = wait_for_completion_timeout(&state->base->completion, HZ); stat = wait_for_completion_timeout(&state->base->completion, HZ);
if (stat == 0) { if (stat == 0) {
u32 istat = ddblreadl(link, INTERRUPT_STATUS);
printk("MCI timeout\n"); printk("MCI timeout\n");
val = ddblreadl(link, MCI_CONTROL); val = ddblreadl(link, MCI_CONTROL);
if (val == 0xffffffff) if (val == 0xffffffff)
printk("Lost PCIe link!\n"); printk("Lost PCIe link!\n");
else {
printk("DDBridge IRS %08x\n", istat);
if (istat & 1)
ddblwritel(link, istat & 1, INTERRUPT_ACK);
}
return -EIO; return -EIO;
} }
if (res && res_len) if (res && res_len)