From 1333e19434da116bc832e1b8925359d1565fedc9 Mon Sep 17 00:00:00 2001 From: Robert Hancock Date: Tue, 2 Oct 2007 11:22:02 -0400 Subject: [PATCH] libata: add human-readable error value decoding This adds human-readable decoding of the ATA status and error registers (similar to what drivers/ide does) as well as the SATA Serror register to libata error handling output. This prevents the need to pore through standards documents to figure out the meaning of the bits in these registers when looking at error reports. Some bits that drivers/ide decoded are not decoded here, since the bits are either command-dependent or obsolete, and properly parsing them would add too much complexity. Signed-off-by: Robert Hancock [edited slightly to make output a bit more symmetric] Signed-off-by: Jeff Garzik --- drivers/ata/libata-eh.c | 45 +++++++++++++++++++++++++++++++++++++++++ include/linux/ata.h | 9 +++++++++ 2 files changed, 54 insertions(+) diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 5f2c0f376f74..0bd3898793a7 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -1911,6 +1911,27 @@ static void ata_eh_link_report(struct ata_link *link) ata_link_printk(link, KERN_ERR, "%s\n", desc); } + if (ehc->i.serror) + ata_port_printk(ap, KERN_ERR, + "SError: { %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s}\n", + ehc->i.serror & SERR_DATA_RECOVERED ? "RecovData " : "", + ehc->i.serror & SERR_COMM_RECOVERED ? "RecovComm " : "", + ehc->i.serror & SERR_DATA ? "UnrecovData " : "", + ehc->i.serror & SERR_PERSISTENT ? "Persist " : "", + ehc->i.serror & SERR_PROTOCOL ? "Proto " : "", + ehc->i.serror & SERR_INTERNAL ? "HostInt " : "", + ehc->i.serror & SERR_PHYRDY_CHG ? "PHYRdyChg " : "", + ehc->i.serror & SERR_PHY_INT_ERR ? "PHYInt " : "", + ehc->i.serror & SERR_COMM_WAKE ? "CommWake " : "", + ehc->i.serror & SERR_10B_8B_ERR ? "10B8B " : "", + ehc->i.serror & SERR_DISPARITY ? "Dispar " : "", + ehc->i.serror & SERR_CRC ? "BadCRC " : "", + ehc->i.serror & SERR_HANDSHAKE ? "Handshk " : "", + ehc->i.serror & SERR_LINK_SEQ_ERR ? "LinkSeq " : "", + ehc->i.serror & SERR_TRANS_ST_ERROR ? "TrStaTrns " : "", + ehc->i.serror & SERR_UNRECOG_FIS ? "UnrecFIS " : "", + ehc->i.serror & SERR_DEV_XCHG ? "DevExch " : "" ); + for (tag = 0; tag < ATA_MAX_QUEUE; tag++) { static const char *dma_str[] = { [DMA_BIDIRECTIONAL] = "bidi", @@ -1942,6 +1963,30 @@ static void ata_eh_link_report(struct ata_link *link) res->hob_lbal, res->hob_lbam, res->hob_lbah, res->device, qc->err_mask, ata_err_string(qc->err_mask), qc->err_mask & AC_ERR_NCQ ? " " : ""); + + if (res->command & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | + ATA_ERR) ) { + if (res->command & ATA_BUSY) + ata_dev_printk(qc->dev, KERN_ERR, + "status: { Busy }\n" ); + else + ata_dev_printk(qc->dev, KERN_ERR, + "status: { %s%s%s%s}\n", + res->command & ATA_DRDY ? "DRDY " : "", + res->command & ATA_DF ? "DF " : "", + res->command & ATA_DRQ ? "DRQ " : "", + res->command & ATA_ERR ? "ERR " : "" ); + } + + if (cmd->command != ATA_CMD_PACKET && + (res->feature & (ATA_ICRC | ATA_UNC | ATA_IDNF | + ATA_ABORTED))) + ata_dev_printk(qc->dev, KERN_ERR, + "error: { %s%s%s%s}\n", + res->feature & ATA_ICRC ? "ICRC " : "", + res->feature & ATA_UNC ? "UNC " : "", + res->feature & ATA_IDNF ? "IDNF " : "", + res->feature & ATA_ABORTED ? "ABRT " : "" ); } } diff --git a/include/linux/ata.h b/include/linux/ata.h index 21f00a0646d8..a4f373f8b798 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -287,6 +287,15 @@ enum { SERR_PROTOCOL = (1 << 10), /* protocol violation */ SERR_INTERNAL = (1 << 11), /* host internal error */ SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */ + SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */ + SERR_COMM_WAKE = (1 << 18), /* Comm wake */ + SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */ + SERR_DISPARITY = (1 << 20), /* Disparity */ + SERR_CRC = (1 << 21), /* CRC error */ + SERR_HANDSHAKE = (1 << 22), /* Handshake error */ + SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */ + SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */ + SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */ SERR_DEV_XCHG = (1 << 26), /* device exchanged */ /* struct ata_taskfile flags */ -- 2.20.1