From 22864256db67a1f85b7f09436612bd9633474dac Mon Sep 17 00:00:00 2001 From: blueswir1 Date: Sat, 11 Oct 2008 09:33:03 +0000 Subject: [PATCH] Correct SCSI error reporting (Laurent Vivier) git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5455 c046a42c-6fe2-441c-8c8c-71466251a162 --- hw/scsi-disk.c | 42 +++++++++++++++++++++++++++--------------- 1 file changed, 27 insertions(+), 15 deletions(-) diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c index 7e5204866b..f7aa6d7a43 100644 --- a/hw/scsi-disk.c +++ b/hw/scsi-disk.c @@ -34,6 +34,9 @@ do { fprintf(stderr, "scsi-disk: " fmt , ##args); } while (0) #define SENSE_HARDWARE_ERROR 4 #define SENSE_ILLEGAL_REQUEST 5 +#define STATUS_GOOD 0 +#define STATUS_CHECK_CONDITION 2 + #define SCSI_DMA_BUF_SIZE 131072 typedef struct SCSIRequest { @@ -124,15 +127,15 @@ static SCSIRequest *scsi_find_request(SCSIDeviceState *s, uint32_t tag) } /* Helper function for command completion. */ -static void scsi_command_complete(SCSIRequest *r, int sense) +static void scsi_command_complete(SCSIRequest *r, int status, int sense) { SCSIDeviceState *s = r->dev; uint32_t tag; - DPRINTF("Command complete tag=0x%x sense=%d\n", r->tag, sense); + DPRINTF("Command complete tag=0x%x status=%d sense=%d\n", r->tag, status, sense); s->sense = sense; tag = r->tag; scsi_remove_request(r); - s->completion(s->opaque, SCSI_REASON_DONE, tag, sense); + s->completion(s->opaque, SCSI_REASON_DONE, tag, status); } /* Cancel a pending data transfer. */ @@ -157,7 +160,8 @@ static void scsi_read_complete(void * opaque, int ret) if (ret) { DPRINTF("IO error\n"); - scsi_command_complete(r, SENSE_HARDWARE_ERROR); + s->completion(s->opaque, SCSI_REASON_DATA, r->tag, 0); + scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_NO_SENSE); return; } DPRINTF("Data ready tag=0x%x len=%d\n", r->tag, r->buf_len); @@ -176,7 +180,7 @@ static void scsi_read_data(SCSIDevice *d, uint32_t tag) if (!r) { BADF("Bad read tag 0x%x\n", tag); /* ??? This is the wrong error. */ - scsi_command_complete(r, SENSE_HARDWARE_ERROR); + scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_HARDWARE_ERROR); return; } if (r->sector_count == (uint32_t)-1) { @@ -187,7 +191,7 @@ static void scsi_read_data(SCSIDevice *d, uint32_t tag) } DPRINTF("Read sector_count=%d\n", r->sector_count); if (r->sector_count == 0) { - scsi_command_complete(r, SENSE_NO_SENSE); + scsi_command_complete(r, STATUS_GOOD, SENSE_NO_SENSE); return; } @@ -199,7 +203,7 @@ static void scsi_read_data(SCSIDevice *d, uint32_t tag) r->aiocb = bdrv_aio_read(s->bdrv, r->sector, r->dma_buf, n, scsi_read_complete, r); if (r->aiocb == NULL) - scsi_command_complete(r, SENSE_HARDWARE_ERROR); + scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_HARDWARE_ERROR); r->sector += n; r->sector_count -= n; } @@ -217,7 +221,7 @@ static void scsi_write_complete(void * opaque, int ret) r->aiocb = NULL; if (r->sector_count == 0) { - scsi_command_complete(r, SENSE_NO_SENSE); + scsi_command_complete(r, STATUS_GOOD, SENSE_NO_SENSE); } else { len = r->sector_count * 512; if (len > SCSI_DMA_BUF_SIZE) { @@ -241,7 +245,7 @@ static int scsi_write_data(SCSIDevice *d, uint32_t tag) r = scsi_find_request(s, tag); if (!r) { BADF("Bad write tag 0x%x\n", tag); - scsi_command_complete(r, SENSE_HARDWARE_ERROR); + scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_HARDWARE_ERROR); return 1; } if (r->aiocb) @@ -251,7 +255,8 @@ static int scsi_write_data(SCSIDevice *d, uint32_t tag) r->aiocb = bdrv_aio_write(s->bdrv, r->sector, r->dma_buf, n, scsi_write_complete, r); if (r->aiocb == NULL) - scsi_command_complete(r, SENSE_HARDWARE_ERROR); + scsi_command_complete(r, STATUS_CHECK_CONDITION, + SENSE_HARDWARE_ERROR); r->sector += n; r->sector_count -= n; } else { @@ -344,7 +349,8 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag, if (lun || buf[1] >> 5) { /* Only LUN 0 supported. */ DPRINTF("Unimplemented LUN %d\n", lun ? lun : buf[1] >> 5); - goto fail; + if (command != 0x03 && command != 0x12) /* REQUEST SENSE and INQUIRY */ + goto fail; } switch (command) { case 0x0: @@ -487,7 +493,10 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag, } } memset(outbuf, 0, 36); - if (bdrv_get_type_hint(s->bdrv) == BDRV_TYPE_CDROM) { + + if (lun || buf[1] >> 5) { + outbuf[0] = 0x7f; /* LUN not supported */ + } else if (bdrv_get_type_hint(s->bdrv) == BDRV_TYPE_CDROM) { outbuf[0] = 5; outbuf[1] = 0x80; memcpy(&outbuf[16], "QEMU CD-ROM ", 16); @@ -670,7 +679,7 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag, outbuf[7] = 0; r->buf_len = 8; } else { - scsi_command_complete(r, SENSE_NOT_READY); + scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_NOT_READY); return 0; } break; @@ -754,14 +763,17 @@ static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag, outbuf[3] = 8; r->buf_len = 16; break; + case 0x2f: + DPRINTF("Verify (sector %d, count %d)\n", lba, len); + break; default: DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]); fail: - scsi_command_complete(r, SENSE_ILLEGAL_REQUEST); + scsi_command_complete(r, STATUS_CHECK_CONDITION, SENSE_ILLEGAL_REQUEST); return 0; } if (r->sector_count == 0 && r->buf_len == 0) { - scsi_command_complete(r, SENSE_NO_SENSE); + scsi_command_complete(r, STATUS_GOOD, SENSE_NO_SENSE); } len = r->sector_count * 512 + r->buf_len; if (is_write) { -- 2.11.4.GIT