diff options
| -rw-r--r-- | hw/scsi-disk.c | 93 |
1 files changed, 92 insertions, 1 deletions
diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c index 584aec13fb..e71809e091 100644 --- a/hw/scsi-disk.c +++ b/hw/scsi-disk.c @@ -637,7 +637,7 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf) { buflen = 8; outbuf[4] = 0; - outbuf[5] = 0x60; /* write_same 10/16 supported */ + outbuf[5] = 0xe0; /* unmap & write_same 10/16 all supported */ outbuf[6] = s->qdev.conf.discard_granularity ? 2 : 1; outbuf[7] = 0; break; @@ -1449,6 +1449,89 @@ invalid_field: return; } +typedef struct UnmapCBData { + SCSIDiskReq *r; + uint8_t *inbuf; + int count; +} UnmapCBData; + +static void scsi_unmap_complete(void *opaque, int ret) +{ + UnmapCBData *data = opaque; + SCSIDiskReq *r = data->r; + SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); + uint64_t sector_num; + uint32 nb_sectors; + + r->req.aiocb = NULL; + if (ret < 0) { + if (scsi_handle_rw_error(r, -ret)) { + goto done; + } + } + + if (data->count > 0 && !r->req.io_canceled) { + sector_num = ldq_be_p(&data->inbuf[0]); + nb_sectors = ldl_be_p(&data->inbuf[8]) & 0xffffffffULL; + if (sector_num > sector_num + nb_sectors || + sector_num + nb_sectors - 1 > s->qdev.max_lba) { + scsi_check_condition(r, SENSE_CODE(LBA_OUT_OF_RANGE)); + goto done; + } + + r->req.aiocb = bdrv_aio_discard(s->qdev.conf.bs, + sector_num * (s->qdev.blocksize / 512), + nb_sectors * (s->qdev.blocksize / 512), + scsi_unmap_complete, data); + data->count--; + data->inbuf += 16; + return; + } + +done: + if (data->count == 0) { + scsi_req_complete(&r->req, GOOD); + } + if (!r->req.io_canceled) { + scsi_req_unref(&r->req); + } + g_free(data); +} + +static void scsi_disk_emulate_unmap(SCSIDiskReq *r, uint8_t *inbuf) +{ + uint8_t *p = inbuf; + int len = r->req.cmd.xfer; + UnmapCBData *data; + + if (len < 8) { + goto invalid_param_len; + } + if (len < lduw_be_p(&p[0]) + 2) { + goto invalid_param_len; + } + if (len < lduw_be_p(&p[2]) + 8) { + goto invalid_param_len; + } + if (lduw_be_p(&p[2]) & 15) { + goto invalid_param_len; + } + + data = g_new0(UnmapCBData, 1); + data->r = r; + data->inbuf = &p[8]; + data->count = lduw_be_p(&p[2]) >> 4; + + /* The matching unref is in scsi_unmap_complete, before data is freed. */ + scsi_req_ref(&r->req); + scsi_unmap_complete(data, 0); + return; + +invalid_param_len: + scsi_check_condition(r, SENSE_CODE(INVALID_PARAM_LEN)); + return; +} + static void scsi_disk_emulate_write_data(SCSIRequest *req) { SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req); @@ -1468,6 +1551,10 @@ static void scsi_disk_emulate_write_data(SCSIRequest *req) scsi_disk_emulate_mode_select(r, r->iov.iov_base); break; + case UNMAP: + scsi_disk_emulate_unmap(r, r->iov.iov_base); + break; + default: abort(); } @@ -1702,6 +1789,9 @@ static int32_t scsi_disk_emulate_command(SCSIRequest *req, uint8_t *buf) case MODE_SELECT_10: DPRINTF("Mode Select(10) (len %lu)\n", (long)r->req.cmd.xfer); break; + case UNMAP: + DPRINTF("Unmap (len %lu)\n", (long)r->req.cmd.xfer); + break; case WRITE_SAME_10: nb_sectors = lduw_be_p(&req->cmd.buf[7]); goto write_same; @@ -2067,6 +2157,7 @@ static const SCSIReqOps *const scsi_disk_reqops_dispatch[256] = { [SEEK_10] = &scsi_disk_emulate_reqops, [MODE_SELECT] = &scsi_disk_emulate_reqops, [MODE_SELECT_10] = &scsi_disk_emulate_reqops, + [UNMAP] = &scsi_disk_emulate_reqops, [WRITE_SAME_10] = &scsi_disk_emulate_reqops, [WRITE_SAME_16] = &scsi_disk_emulate_reqops, |