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Teach ahci(4), siis(4) and ATA_CAM ata(4) wrapper report to CAM residual

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I/O length on underruns, that often happens for some SCSI commands.
This commit is contained in:
Alexander Motin 2010-11-08 15:36:15 +00:00
parent c70410e6f5
commit ba3a999598
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=214988
3 changed files with 42 additions and 8 deletions
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30
sys/dev/ahci/ahci.c
View File

@ -1625,12 +1625,13 @@ ahci_execute_transaction(struct ahci_slot *slot)
/* Setup the command list entry */
clp = (struct ahci_cmd_list *)
(ch->dma.work + AHCI_CL_OFFSET + (AHCI_CL_SIZE * slot->slot));
clp->prd_length = slot->dma.nsegs;
clp->cmd_flags = (ccb->ccb_h.flags & CAM_DIR_OUT ? AHCI_CMD_WRITE : 0) |
(ccb->ccb_h.func_code == XPT_SCSI_IO ?
(AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH) : 0) |
(fis_size / sizeof(u_int32_t)) |
(port << 12);
clp->cmd_flags = htole16(
(ccb->ccb_h.flags & CAM_DIR_OUT ? AHCI_CMD_WRITE : 0) |
(ccb->ccb_h.func_code == XPT_SCSI_IO ?
(AHCI_CMD_ATAPI | AHCI_CMD_PREFETCH) : 0) |
(fis_size / sizeof(u_int32_t)) |
(port << 12));
clp->prd_length = htole16(slot->dma.nsegs);
/* Special handling for Soft Reset command. */
if ((ccb->ccb_h.func_code == XPT_ATA_IO) &&
(ccb->ataio.cmd.flags & CAM_ATAIO_CONTROL)) {
@ -1650,7 +1651,7 @@ ahci_execute_transaction(struct ahci_slot *slot)
clp->cmd_table_phys = htole64(ch->dma.work_bus + AHCI_CT_OFFSET +
(AHCI_CT_SIZE * slot->slot));
bus_dmamap_sync(ch->dma.work_tag, ch->dma.work_map,
BUS_DMASYNC_PREWRITE);
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(ch->dma.rfis_tag, ch->dma.rfis_map,
BUS_DMASYNC_PREREAD);
/* Set ACTIVE bit for NCQ commands. */
@ -1855,10 +1856,13 @@ ahci_end_transaction(struct ahci_slot *slot, enum ahci_err_type et)
device_t dev = slot->dev;
struct ahci_channel *ch = device_get_softc(dev);
union ccb *ccb = slot->ccb;
struct ahci_cmd_list *clp;
int lastto;
bus_dmamap_sync(ch->dma.work_tag, ch->dma.work_map,
BUS_DMASYNC_POSTWRITE);
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
clp = (struct ahci_cmd_list *)
(ch->dma.work + AHCI_CL_OFFSET + (AHCI_CL_SIZE * slot->slot));
/* Read result registers to the result struct
* May be incorrect if several commands finished same time,
* so read only when sure or have to.
@ -1893,6 +1897,16 @@ ahci_end_transaction(struct ahci_slot *slot, enum ahci_err_type et)
res->sector_count_exp = fis[13];
} else
bzero(res, sizeof(*res));
if ((ccb->ataio.cmd.flags & CAM_ATAIO_FPDMA) == 0 &&
(ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
ccb->ataio.resid =
ccb->ataio.dxfer_len - le32toh(clp->bytecount);
}
} else {
if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
ccb->csio.resid =
ccb->csio.dxfer_len - le32toh(clp->bytecount);
}
}
if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
bus_dmamap_sync(ch->dma.data_tag, slot->dma.data_map,

9
sys/dev/ata/ata-all.c
View File

@ -1517,6 +1517,15 @@ ata_cam_end_transaction(device_t dev, struct ata_request *request)
res->sector_count = request->u.ata.count;
res->sector_count_exp = request->u.ata.count >> 8;
}
if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
if (ccb->ccb_h.func_code == XPT_ATA_IO) {
ccb->ataio.resid =
ccb->ataio.dxfer_len - request->donecount;
} else {
ccb->csio.resid =
ccb->csio.dxfer_len - request->donecount;
}
}
ata_free_request(request);
xpt_done(ccb);
/* Do error recovery if needed. */

11
sys/dev/siis/siis.c
View File

@ -1208,6 +1208,17 @@ siis_end_transaction(struct siis_slot *slot, enum siis_err_type et)
res->sector_count_exp = ATA_INB(ch->r_mem, offs + 13);
} else
bzero(res, sizeof(*res));
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN &&
ch->numrslots == 1) {
ccb->ataio.resid = ccb->ataio.dxfer_len -
ATA_INL(ch->r_mem, SIIS_P_LRAM_SLOT(slot->slot) + 4);
}
} else {
if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN &&
ch->numrslots == 1) {
ccb->csio.resid = ccb->csio.dxfer_len -
ATA_INL(ch->r_mem, SIIS_P_LRAM_SLOT(slot->slot) + 4);
}
}
if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
bus_dmamap_sync(ch->dma.data_tag, slot->dma.data_map,