diff options
Diffstat (limited to 'sys/dev/ata/ata-queue.c')
| -rw-r--r-- | sys/dev/ata/ata-queue.c | 757 |
1 files changed, 757 insertions, 0 deletions
diff --git a/sys/dev/ata/ata-queue.c b/sys/dev/ata/ata-queue.c new file mode 100644 index 000000000000..75ef9284e5ef --- /dev/null +++ b/sys/dev/ata/ata-queue.c @@ -0,0 +1,757 @@ +/*- + * Copyright (c) 1998 - 2006 Søren Schmidt <sos@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer, + * without modification, immediately at the beginning of the file. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "opt_ata.h" +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/ata.h> +#include <sys/kernel.h> +#include <sys/bio.h> +#include <sys/bus.h> +#include <sys/conf.h> +#include <sys/sema.h> +#include <sys/taskqueue.h> +#include <vm/uma.h> +#include <machine/bus.h> +#include <sys/rman.h> +#include <dev/ata/ata-all.h> +#include <ata_if.h> + +/* prototypes */ +static void ata_completed(void *, int); +static void ata_sort_queue(struct ata_channel *ch, struct ata_request *request); +static char *ata_skey2str(u_int8_t); + +void +ata_queue_request(struct ata_request *request) +{ + struct ata_channel *ch; + + /* treat request as virgin (this might be an ATA_R_REQUEUE) */ + request->result = request->status = request->error = 0; + + /* check that that the device is still valid */ + if (!(request->parent = device_get_parent(request->dev))) { + request->result = ENXIO; + if (request->callback) + (request->callback)(request); + return; + } + ch = device_get_softc(request->parent); + callout_init_mtx(&request->callout, &ch->state_mtx, CALLOUT_RETURNUNLOCKED); + if (!request->callback && !(request->flags & ATA_R_REQUEUE)) + sema_init(&request->done, 0, "ATA request done"); + + /* in ATA_STALL_QUEUE state we call HW directly */ + if ((ch->state & ATA_STALL_QUEUE) && (request->flags & ATA_R_CONTROL)) { + mtx_lock(&ch->state_mtx); + ch->running = request; + if (ch->hw.begin_transaction(request) == ATA_OP_FINISHED) { + ch->running = NULL; + if (!request->callback) + sema_destroy(&request->done); + mtx_unlock(&ch->state_mtx); + return; + } + mtx_unlock(&ch->state_mtx); + } + /* otherwise put request on the locked queue at the specified location */ + else { + mtx_lock(&ch->queue_mtx); + if (request->flags & ATA_R_AT_HEAD) + TAILQ_INSERT_HEAD(&ch->ata_queue, request, chain); + else if (request->flags & ATA_R_ORDERED) + ata_sort_queue(ch, request); + else + TAILQ_INSERT_TAIL(&ch->ata_queue, request, chain); + mtx_unlock(&ch->queue_mtx); + ATA_DEBUG_RQ(request, "queued"); + ata_start(ch->dev); + } + + /* if this is a requeued request callback/sleep we're done */ + if (request->flags & ATA_R_REQUEUE) + return; + + /* if this is not a callback wait until request is completed */ + if (!request->callback) { + ATA_DEBUG_RQ(request, "wait for completition"); + if (!dumping && + sema_timedwait(&request->done, request->timeout * hz * 4)) { + device_printf(request->dev, + "WARNING - %s taskqueue timeout " + "- completing request directly\n", + ata_cmd2str(request)); + request->flags |= ATA_R_DANGER1; + ata_completed(request, 0); + } + sema_destroy(&request->done); + } +} + +int +ata_controlcmd(device_t dev, u_int8_t command, u_int16_t feature, + u_int64_t lba, u_int16_t count) +{ + struct ata_request *request = ata_alloc_request(); + int error = ENOMEM; + + if (request) { + request->dev = dev; + request->u.ata.command = command; + request->u.ata.lba = lba; + request->u.ata.count = count; + request->u.ata.feature = feature; + request->flags = ATA_R_CONTROL; + request->timeout = 1; + request->retries = 0; + ata_queue_request(request); + error = request->result; + ata_free_request(request); + } + return error; +} + +int +ata_atapicmd(device_t dev, u_int8_t *ccb, caddr_t data, + int count, int flags, int timeout) +{ + struct ata_request *request = ata_alloc_request(); + struct ata_device *atadev = device_get_softc(dev); + int error = ENOMEM; + + if (request) { + request->dev = dev; + if ((atadev->param.config & ATA_PROTO_MASK) == ATA_PROTO_ATAPI_12) + bcopy(ccb, request->u.atapi.ccb, 12); + else + bcopy(ccb, request->u.atapi.ccb, 16); + request->data = data; + request->bytecount = count; + request->transfersize = min(request->bytecount, 65534); + request->flags = flags | ATA_R_ATAPI; + request->timeout = timeout; + request->retries = 0; + ata_queue_request(request); + error = request->result; + ata_free_request(request); + } + return error; +} + +void +ata_start(device_t dev) +{ + struct ata_channel *ch = device_get_softc(dev); + struct ata_request *request; + struct ata_composite *cptr; + int dependencies = 0; + + /* if we have a request on the queue try to get it running */ + mtx_lock(&ch->queue_mtx); + if ((request = TAILQ_FIRST(&ch->ata_queue))) { + + /* we need the locking function to get the lock for this channel */ + if (ATA_LOCKING(dev, ATA_LF_LOCK) == ch->unit) { + + /* check for composite dependencies */ + if ((cptr = request->composite)) { + mtx_lock(&cptr->lock); + if ((request->flags & ATA_R_WRITE) && + (cptr->wr_depend & cptr->rd_done) != cptr->wr_depend) { + dependencies = 1; + } + mtx_unlock(&cptr->lock); + } + + /* check we are in the right state and has no dependencies */ + mtx_lock(&ch->state_mtx); + if (ch->state == ATA_IDLE && !dependencies) { + ATA_DEBUG_RQ(request, "starting"); + TAILQ_REMOVE(&ch->ata_queue, request, chain); + ch->running = request; + ch->state = ATA_ACTIVE; + + /* if we are the freezing point release it */ + if (ch->freezepoint == request) + ch->freezepoint = NULL; + + if (ch->hw.begin_transaction(request) == ATA_OP_FINISHED) { + ch->running = NULL; + ch->state = ATA_IDLE; + mtx_unlock(&ch->state_mtx); + mtx_unlock(&ch->queue_mtx); + ATA_LOCKING(dev, ATA_LF_UNLOCK); + ata_finish(request); + return; + } + if (dumping) { + mtx_unlock(&ch->state_mtx); + mtx_unlock(&ch->queue_mtx); + while (!ata_interrupt(ch)) + DELAY(10); + return; + } + } + mtx_unlock(&ch->state_mtx); + } + } + mtx_unlock(&ch->queue_mtx); +} + +void +ata_finish(struct ata_request *request) +{ + struct ata_channel *ch = device_get_softc(request->parent); + + /* + * if in ATA_STALL_QUEUE state or request has ATA_R_DIRECT flags set + * we need to call ata_complete() directly here (no taskqueue involvement) + */ + if (dumping || + (ch->state & ATA_STALL_QUEUE) || (request->flags & ATA_R_DIRECT)) { + ATA_DEBUG_RQ(request, "finish directly"); + ata_completed(request, 0); + } + else { + /* put request on the proper taskqueue for completition */ + if (request->bio && !(request->flags & (ATA_R_THREAD | ATA_R_TIMEOUT))){ + ATA_DEBUG_RQ(request, "finish bio_taskqueue"); + bio_taskqueue(request->bio, (bio_task_t *)ata_completed, request); + } + else { + TASK_INIT(&request->task, 0, ata_completed, request); + ATA_DEBUG_RQ(request, "finish taskqueue_swi"); + taskqueue_enqueue(taskqueue_swi, &request->task); + } + } +} + +static void +ata_completed(void *context, int dummy) +{ + struct ata_request *request = (struct ata_request *)context; + struct ata_channel *ch = device_get_softc(request->parent); + struct ata_device *atadev = device_get_softc(request->dev); + struct ata_composite *composite; + + if (request->flags & ATA_R_DANGER2) { + device_printf(request->dev, + "WARNING - %s freeing taskqueue zombie request\n", + ata_cmd2str(request)); + request->flags &= ~(ATA_R_DANGER1 | ATA_R_DANGER2); + ata_free_request(request); + return; + } + if (request->flags & ATA_R_DANGER1) + request->flags |= ATA_R_DANGER2; + + ATA_DEBUG_RQ(request, "completed entered"); + + /* if we had a timeout, reinit channel and deal with the falldown */ + if (request->flags & ATA_R_TIMEOUT) { + /* + * if the channel is still present and + * reinit succeeds and + * the device doesn't get detached and + * there are retries left we reinject this request + */ + if (ch && !ata_reinit(ch->dev) && !request->result && + (request->retries-- > 0)) { + if (!(request->flags & ATA_R_QUIET)) { + device_printf(request->dev, + "TIMEOUT - %s retrying (%d retr%s left)", + ata_cmd2str(request), request->retries, + request->retries == 1 ? "y" : "ies"); + if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL))) + printf(" LBA=%ju", request->u.ata.lba); + printf("\n"); + } + request->flags &= ~(ATA_R_TIMEOUT | ATA_R_DEBUG); + request->flags |= (ATA_R_AT_HEAD | ATA_R_REQUEUE); + ATA_DEBUG_RQ(request, "completed reinject"); + ata_queue_request(request); + return; + } + + /* ran out of good intentions so finish with error */ + if (!request->result) { + if (!(request->flags & ATA_R_QUIET)) { + if (request->dev) { + device_printf(request->dev, "FAILURE - %s timed out", + ata_cmd2str(request)); + if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL))) + printf(" LBA=%ju", request->u.ata.lba); + printf("\n"); + } + } + request->result = EIO; + } + } + else if (!(request->flags & ATA_R_ATAPI) ){ + /* if this is a soft ECC error warn about it */ + /* XXX SOS we could do WARF here */ + if ((request->status & (ATA_S_CORR | ATA_S_ERROR)) == ATA_S_CORR) { + device_printf(request->dev, + "WARNING - %s soft error (ECC corrected)", + ata_cmd2str(request)); + if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL))) + printf(" LBA=%ju", request->u.ata.lba); + printf("\n"); + } + + /* if this is a UDMA CRC error we reinject if there are retries left */ + if (request->flags & ATA_R_DMA && request->error & ATA_E_ICRC) { + if (request->retries-- > 0) { + device_printf(request->dev, + "WARNING - %s UDMA ICRC error (retrying request)", + ata_cmd2str(request)); + if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL))) + printf(" LBA=%ju", request->u.ata.lba); + printf("\n"); + request->flags |= (ATA_R_AT_HEAD | ATA_R_REQUEUE); + ata_queue_request(request); + return; + } + } + } + + switch (request->flags & ATA_R_ATAPI) { + + /* ATA errors */ + default: + if (!request->result && request->status & ATA_S_ERROR) { + if (!(request->flags & ATA_R_QUIET)) { + device_printf(request->dev, + "FAILURE - %s status=%b error=%b", + ata_cmd2str(request), + request->status, "\20\10BUSY\7READY\6DMA_READY" + "\5DSC\4DRQ\3CORRECTABLE\2INDEX\1ERROR", + request->error, "\20\10ICRC\7UNCORRECTABLE" + "\6MEDIA_CHANGED\5NID_NOT_FOUND" + "\4MEDIA_CHANGE_REQEST" + "\3ABORTED\2NO_MEDIA\1ILLEGAL_LENGTH"); + if ((request->flags & ATA_R_DMA) && + (request->dmastat & ATA_BMSTAT_ERROR)) + printf(" dma=0x%02x", request->dmastat); + if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL))) + printf(" LBA=%ju", request->u.ata.lba); + printf("\n"); + } + request->result = EIO; + } + break; + + /* ATAPI errors */ + case ATA_R_ATAPI: + /* skip if result already set */ + if (request->result) + break; + + /* if we have a sensekey -> request sense from device */ + if ((request->error & ATA_E_ATAPI_SENSE_MASK) && + (request->u.atapi.ccb[0] != ATAPI_REQUEST_SENSE)) { + static u_int8_t ccb[16] = { ATAPI_REQUEST_SENSE, 0, 0, 0, + sizeof(struct atapi_sense), + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; + + request->u.atapi.saved_cmd = request->u.atapi.ccb[0]; + bcopy(ccb, request->u.atapi.ccb, 16); + request->data = (caddr_t)&request->u.atapi.sense; + request->bytecount = sizeof(struct atapi_sense); + request->donecount = 0; + request->transfersize = sizeof(struct atapi_sense); + request->timeout = 5; + request->flags &= (ATA_R_ATAPI | ATA_R_QUIET); + request->flags |= (ATA_R_READ | ATA_R_AT_HEAD | ATA_R_REQUEUE); + ATA_DEBUG_RQ(request, "autoissue request sense"); + ata_queue_request(request); + return; + } + + switch (request->u.atapi.sense.key & ATA_SENSE_KEY_MASK) { + case ATA_SENSE_RECOVERED_ERROR: + device_printf(request->dev, "WARNING - %s recovered error\n", + ata_cmd2str(request)); + /* FALLTHROUGH */ + + case ATA_SENSE_NO_SENSE: + request->result = 0; + break; + + case ATA_SENSE_NOT_READY: + request->result = EBUSY; + break; + + case ATA_SENSE_UNIT_ATTENTION: + atadev->flags |= ATA_D_MEDIA_CHANGED; + request->result = EIO; + break; + + default: + request->result = EIO; + if (request->flags & ATA_R_QUIET) + break; + + device_printf(request->dev, + "FAILURE - %s %s asc=0x%02x ascq=0x%02x ", + ata_cmd2str(request), ata_skey2str( + (request->u.atapi.sense.key & ATA_SENSE_KEY_MASK)), + request->u.atapi.sense.asc, + request->u.atapi.sense.ascq); + if (request->u.atapi.sense.specific & ATA_SENSE_SPEC_VALID) + printf("sks=0x%02x 0x%02x 0x%02x\n", + request->u.atapi.sense.specific & ATA_SENSE_SPEC_MASK, + request->u.atapi.sense.specific1, + request->u.atapi.sense.specific2); + else + printf("\n"); + } + + if ((request->u.atapi.sense.key & ATA_SENSE_KEY_MASK ? + request->u.atapi.sense.key & ATA_SENSE_KEY_MASK : + request->error)) + request->result = EIO; + } + + ATA_DEBUG_RQ(request, "completed callback/wakeup"); + + /* if we are part of a composite operation we need to maintain progress */ + if ((composite = request->composite)) { + int index = 0; + + mtx_lock(&composite->lock); + + /* update whats done */ + if (request->flags & ATA_R_READ) + composite->rd_done |= (1 << request->this); + if (request->flags & ATA_R_WRITE) + composite->wr_done |= (1 << request->this); + + /* find ready to go dependencies */ + if (composite->wr_depend && + (composite->rd_done & composite->wr_depend)==composite->wr_depend && + (composite->wr_needed & (~composite->wr_done))) { + index = composite->wr_needed & ~composite->wr_done; + } + + mtx_unlock(&composite->lock); + + /* if we have any ready candidates kick them off */ + if (index) { + int bit; + + for (bit = 0; bit < MAX_COMPOSITES; bit++) { + if (index & (1 << bit)) + ata_start(device_get_parent(composite->request[bit]->dev)); + } + } + } + + /* get results back to the initiator for this request */ + if (request->callback) + (request->callback)(request); + else + sema_post(&request->done); + + /* only call ata_start if channel is present */ + if (ch) + ata_start(ch->dev); +} + +void +ata_timeout(struct ata_request *request) +{ + struct ata_channel *ch = device_get_softc(request->parent); + + //request->flags |= ATA_R_DEBUG; + ATA_DEBUG_RQ(request, "timeout"); + + /* + * if we have an ATA_ACTIVE request running, we flag the request + * ATA_R_TIMEOUT so ata_finish will handle it correctly + * also NULL out the running request so we wont loose + * the race with an eventual interrupt arriving late + */ + if (ch->state == ATA_ACTIVE) { + request->flags |= ATA_R_TIMEOUT; + mtx_unlock(&ch->state_mtx); + ATA_LOCKING(ch->dev, ATA_LF_UNLOCK); + ata_finish(request); + } + else { + mtx_unlock(&ch->state_mtx); + } +} + +void +ata_fail_requests(device_t dev) +{ + struct ata_channel *ch = device_get_softc(device_get_parent(dev)); + struct ata_request *request, *tmp; + TAILQ_HEAD(, ata_request) fail_requests; + TAILQ_INIT(&fail_requests); + + /* grap all channel locks to avoid races */ + mtx_lock(&ch->queue_mtx); + mtx_lock(&ch->state_mtx); + + /* do we have any running request to care about ? */ + if ((request = ch->running) && (!dev || request->dev == dev)) { + callout_stop(&request->callout); + ch->running = NULL; + request->result = ENXIO; + TAILQ_INSERT_TAIL(&fail_requests, request, chain); + } + + /* fail all requests queued on this channel for device dev if !NULL */ + TAILQ_FOREACH_SAFE(request, &ch->ata_queue, chain, tmp) { + if (!dev || request->dev == dev) { + TAILQ_REMOVE(&ch->ata_queue, request, chain); + request->result = ENXIO; + TAILQ_INSERT_TAIL(&fail_requests, request, chain); + } + } + + mtx_unlock(&ch->state_mtx); + mtx_unlock(&ch->queue_mtx); + + /* finish up all requests collected above */ + TAILQ_FOREACH_SAFE(request, &fail_requests, chain, tmp) { + TAILQ_REMOVE(&fail_requests, request, chain); + ata_finish(request); + } +} + +static u_int64_t +ata_get_lba(struct ata_request *request) +{ + if (request->flags & ATA_R_ATAPI) { + switch (request->u.atapi.ccb[0]) { + case ATAPI_READ_BIG: + case ATAPI_WRITE_BIG: + case ATAPI_READ_CD: + return (request->u.atapi.ccb[5]) | (request->u.atapi.ccb[4]<<8) | + (request->u.atapi.ccb[3]<<16)|(request->u.atapi.ccb[2]<<24); + case ATAPI_READ: + case ATAPI_WRITE: + return (request->u.atapi.ccb[4]) | (request->u.atapi.ccb[3]<<8) | + (request->u.atapi.ccb[2]<<16); + default: + return 0; + } + } + else + return request->u.ata.lba; +} + +static void +ata_sort_queue(struct ata_channel *ch, struct ata_request *request) +{ + struct ata_request *this, *next; + + this = TAILQ_FIRST(&ch->ata_queue); + + /* if the queue is empty just insert */ + if (!this) { + if (request->composite) + ch->freezepoint = request; + TAILQ_INSERT_TAIL(&ch->ata_queue, request, chain); + return; + } + + /* dont sort frozen parts of the queue */ + if (ch->freezepoint) + this = ch->freezepoint; + + /* if position is less than head we add after tipping point */ + if (ata_get_lba(request) < ata_get_lba(this)) { + while ((next = TAILQ_NEXT(this, chain))) { + + /* have we reached the tipping point */ + if (ata_get_lba(next) < ata_get_lba(this)) { + + /* sort the insert */ + do { + if (ata_get_lba(request) < ata_get_lba(next)) + break; + this = next; + } while ((next = TAILQ_NEXT(this, chain))); + break; + } + this = next; + } + } + + /* we are after head so sort the insert before tipping point */ + else { + while ((next = TAILQ_NEXT(this, chain))) { + if (ata_get_lba(next) < ata_get_lba(this) || + ata_get_lba(request) < ata_get_lba(next)) + break; + this = next; + } + } + + if (request->composite) + ch->freezepoint = request; + TAILQ_INSERT_AFTER(&ch->ata_queue, this, request, chain); +} + +char * +ata_cmd2str(struct ata_request *request) +{ + static char buffer[20]; + + if (request->flags & ATA_R_ATAPI) { + switch (request->u.atapi.sense.key ? + request->u.atapi.saved_cmd : request->u.atapi.ccb[0]) { + case 0x00: return ("TEST_UNIT_READY"); + case 0x01: return ("REZERO"); + case 0x03: return ("REQUEST_SENSE"); + case 0x04: return ("FORMAT"); + case 0x08: return ("READ"); + case 0x0a: return ("WRITE"); + case 0x10: return ("WEOF"); + case 0x11: return ("SPACE"); + case 0x12: return ("INQUIRY"); + case 0x15: return ("MODE_SELECT"); + case 0x19: return ("ERASE"); + case 0x1a: return ("MODE_SENSE"); + case 0x1b: return ("START_STOP"); + case 0x1e: return ("PREVENT_ALLOW"); + case 0x23: return ("ATAPI_READ_FORMAT_CAPACITIES"); + case 0x25: return ("READ_CAPACITY"); + case 0x28: return ("READ_BIG"); + case 0x2a: return ("WRITE_BIG"); + case 0x2b: return ("LOCATE"); + case 0x34: return ("READ_POSITION"); + case 0x35: return ("SYNCHRONIZE_CACHE"); + case 0x3b: return ("WRITE_BUFFER"); + case 0x3c: return ("READ_BUFFER"); + case 0x42: return ("READ_SUBCHANNEL"); + case 0x43: return ("READ_TOC"); + case 0x45: return ("PLAY_10"); + case 0x47: return ("PLAY_MSF"); + case 0x48: return ("PLAY_TRACK"); + case 0x4b: return ("PAUSE"); + case 0x51: return ("READ_DISK_INFO"); + case 0x52: return ("READ_TRACK_INFO"); + case 0x53: return ("RESERVE_TRACK"); + case 0x54: return ("SEND_OPC_INFO"); + case 0x55: return ("MODE_SELECT_BIG"); + case 0x58: return ("REPAIR_TRACK"); + case 0x59: return ("READ_MASTER_CUE"); + case 0x5a: return ("MODE_SENSE_BIG"); + case 0x5b: return ("CLOSE_TRACK/SESSION"); + case 0x5c: return ("READ_BUFFER_CAPACITY"); + case 0x5d: return ("SEND_CUE_SHEET"); + case 0x96: return ("SERVICE_ACTION_IN"); + case 0xa1: return ("BLANK_CMD"); + case 0xa3: return ("SEND_KEY"); + case 0xa4: return ("REPORT_KEY"); + case 0xa5: return ("PLAY_12"); + case 0xa6: return ("LOAD_UNLOAD"); + case 0xad: return ("READ_DVD_STRUCTURE"); + case 0xb4: return ("PLAY_CD"); + case 0xbb: return ("SET_SPEED"); + case 0xbd: return ("MECH_STATUS"); + case 0xbe: return ("READ_CD"); + case 0xff: return ("POLL_DSC"); + } + } + else { + switch (request->u.ata.command) { + case 0x00: return ("NOP"); + case 0x08: return ("DEVICE_RESET"); + case 0x20: return ("READ"); + case 0x24: return ("READ48"); + case 0x25: return ("READ_DMA48"); + case 0x26: return ("READ_DMA_QUEUED48"); + case 0x29: return ("READ_MUL48"); + case 0x30: return ("WRITE"); + case 0x34: return ("WRITE48"); + case 0x35: return ("WRITE_DMA48"); + case 0x36: return ("WRITE_DMA_QUEUED48"); + case 0x39: return ("WRITE_MUL48"); + case 0x70: return ("SEEK"); + case 0xa0: return ("PACKET_CMD"); + case 0xa1: return ("ATAPI_IDENTIFY"); + case 0xa2: return ("SERVICE"); + case 0xc0: return ("CFA ERASE"); + case 0xc4: return ("READ_MUL"); + case 0xc5: return ("WRITE_MUL"); + case 0xc6: return ("SET_MULTI"); + case 0xc7: return ("READ_DMA_QUEUED"); + case 0xc8: return ("READ_DMA"); + case 0xca: return ("WRITE_DMA"); + case 0xcc: return ("WRITE_DMA_QUEUED"); + case 0xe6: return ("SLEEP"); + case 0xe7: return ("FLUSHCACHE"); + case 0xea: return ("FLUSHCACHE48"); + case 0xec: return ("ATA_IDENTIFY"); + case 0xef: + switch (request->u.ata.feature) { + case 0x03: return ("SETFEATURES SET TRANSFER MODE"); + case 0x02: return ("SETFEATURES ENABLE WCACHE"); + case 0x82: return ("SETFEATURES DISABLE WCACHE"); + case 0xaa: return ("SETFEATURES ENABLE RCACHE"); + case 0x55: return ("SETFEATURES DISABLE RCACHE"); + } + sprintf(buffer, "SETFEATURES 0x%02x", request->u.ata.feature); + return buffer; + } + } + sprintf(buffer, "unknown CMD (0x%02x)", request->u.ata.command); + return buffer; +} + +static char * +ata_skey2str(u_int8_t skey) +{ + switch (skey) { + case 0x00: return ("NO SENSE"); + case 0x01: return ("RECOVERED ERROR"); + case 0x02: return ("NOT READY"); + case 0x03: return ("MEDIUM ERROR"); + case 0x04: return ("HARDWARE ERROR"); + case 0x05: return ("ILLEGAL REQUEST"); + case 0x06: return ("UNIT ATTENTION"); + case 0x07: return ("DATA PROTECT"); + case 0x08: return ("BLANK CHECK"); + case 0x09: return ("VENDOR SPECIFIC"); + case 0x0a: return ("COPY ABORTED"); + case 0x0b: return ("ABORTED COMMAND"); + case 0x0c: return ("EQUAL"); + case 0x0d: return ("VOLUME OVERFLOW"); + case 0x0e: return ("MISCOMPARE"); + case 0x0f: return ("RESERVED"); + default: return("UNKNOWN"); + } +} |