diff options
Diffstat (limited to 'hw/spapr_vscsi.c')
| -rw-r--r-- | hw/spapr_vscsi.c | 54 |
1 files changed, 41 insertions, 13 deletions
diff --git a/hw/spapr_vscsi.c b/hw/spapr_vscsi.c index e8426d7..00e2d2d 100644 --- a/hw/spapr_vscsi.c +++ b/hw/spapr_vscsi.c @@ -129,11 +129,38 @@ static void vscsi_put_req(vscsi_req *req) req->active = 0; } -static void vscsi_decode_id_lun(uint64_t srp_lun, int *id, int *lun) +static SCSIDevice *vscsi_device_find(SCSIBus *bus, uint64_t srp_lun, int *lun) { - /* XXX Figure that one out properly ! This is crackpot */ - *id = (srp_lun >> 56) & 0x7f; - *lun = (srp_lun >> 48) & 0xff; + int channel = 0, id = 0; + +retry: + switch (srp_lun >> 62) { + case 0: + if ((srp_lun >> 56) != 0) { + channel = (srp_lun >> 56) & 0x3f; + id = (srp_lun >> 48) & 0xff; + srp_lun <<= 16; + goto retry; + } + *lun = (srp_lun >> 48) & 0xff; + break; + + case 1: + *lun = (srp_lun >> 48) & 0x3fff; + break; + case 2: + channel = (srp_lun >> 53) & 0x7; + id = (srp_lun >> 56) & 0x3f; + *lun = (srp_lun >> 48) & 0x1f; + break; + case 3: + *lun = -1; + return NULL; + default: + abort(); + } + + return scsi_device_find(bus, channel, id, *lun); } static int vscsi_send_iu(VSCSIState *s, vscsi_req *req, @@ -582,14 +609,11 @@ static int vscsi_queue_cmd(VSCSIState *s, vscsi_req *req) { union srp_iu *srp = &req->iu.srp; SCSIDevice *sdev; - int n, id, lun; + int n, lun; - vscsi_decode_id_lun(be64_to_cpu(srp->cmd.lun), &id, &lun); - - /* Qemu vs. linux issue with LUNs to be sorted out ... */ - sdev = (id < 8 && lun < 16) ? s->bus.devs[id] : NULL; + sdev = vscsi_device_find(&s->bus, be64_to_cpu(srp->cmd.lun), &lun); if (!sdev) { - dprintf("VSCSI: Command for id %d with no drive\n", id); + dprintf("VSCSI: Command for lun %08" PRIx64 " with no drive\n", be64_to_cpu(srp->cmd.lun)); if (srp->cmd.cdb[0] == INQUIRY) { vscsi_inquiry_no_target(s, req); } else { @@ -862,7 +886,12 @@ static int vscsi_do_crq(struct VIOsPAPRDevice *dev, uint8_t *crq_data) return 0; } -static const struct SCSIBusOps vscsi_scsi_ops = { +static const struct SCSIBusInfo vscsi_scsi_info = { + .tcq = true, + .max_channel = 7, /* logical unit addressing format */ + .max_target = 63, + .max_lun = 31, + .transfer_data = vscsi_transfer_data, .complete = vscsi_command_complete, .cancel = vscsi_request_cancelled @@ -883,8 +912,7 @@ static int spapr_vscsi_init(VIOsPAPRDevice *dev) dev->crq.SendFunc = vscsi_do_crq; - scsi_bus_new(&s->bus, &dev->qdev, 1, VSCSI_REQ_LIMIT, - &vscsi_scsi_ops); + scsi_bus_new(&s->bus, &dev->qdev, &vscsi_scsi_info); if (!dev->qdev.hotplugged) { scsi_bus_legacy_handle_cmdline(&s->bus); } |