root / hw / scsi-bus.c @ 30ab6125
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| 1 |
#include "hw.h" |
|---|---|
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#include "qemu-error.h" |
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#include "scsi.h" |
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#include "scsi-defs.h" |
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#include "qdev.h" |
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#include "blockdev.h" |
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#include "trace.h" |
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|
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static char *scsibus_get_fw_dev_path(DeviceState *dev); |
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|
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static struct BusInfo scsi_bus_info = { |
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.name = "SCSI",
|
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.size = sizeof(SCSIBus),
|
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.get_fw_dev_path = scsibus_get_fw_dev_path, |
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.props = (Property[]) {
|
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DEFINE_PROP_UINT32("scsi-id", SCSIDevice, id, -1), |
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DEFINE_PROP_END_OF_LIST(), |
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}, |
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}; |
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static int next_scsi_bus; |
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|
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/* Create a scsi bus, and attach devices to it. */
|
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void scsi_bus_new(SCSIBus *bus, DeviceState *host, int tcq, int ndev, |
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const SCSIBusOps *ops)
|
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{
|
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qbus_create_inplace(&bus->qbus, &scsi_bus_info, host, NULL);
|
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bus->busnr = next_scsi_bus++; |
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bus->tcq = tcq; |
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bus->ndev = ndev; |
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bus->ops = ops; |
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bus->qbus.allow_hotplug = 1;
|
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} |
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|
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static int scsi_qdev_init(DeviceState *qdev, DeviceInfo *base) |
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{
|
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SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev); |
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SCSIDeviceInfo *info = DO_UPCAST(SCSIDeviceInfo, qdev, base); |
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SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); |
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int rc = -1; |
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|
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if (dev->id == -1) { |
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for (dev->id = 0; dev->id < bus->ndev; dev->id++) { |
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if (bus->devs[dev->id] == NULL) |
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break;
|
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} |
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} |
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if (dev->id >= bus->ndev) {
|
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error_report("bad scsi device id: %d", dev->id);
|
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goto err;
|
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} |
| 51 |
|
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if (bus->devs[dev->id]) {
|
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qdev_free(&bus->devs[dev->id]->qdev); |
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} |
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bus->devs[dev->id] = dev; |
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|
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dev->info = info; |
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QTAILQ_INIT(&dev->requests); |
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rc = dev->info->init(dev); |
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if (rc != 0) { |
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bus->devs[dev->id] = NULL;
|
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} |
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|
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err:
|
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return rc;
|
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} |
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|
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static int scsi_qdev_exit(DeviceState *qdev) |
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{
|
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SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev); |
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SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus); |
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|
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assert(bus->devs[dev->id] != NULL);
|
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if (bus->devs[dev->id]->info->destroy) {
|
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bus->devs[dev->id]->info->destroy(bus->devs[dev->id]); |
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} |
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bus->devs[dev->id] = NULL;
|
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return 0; |
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} |
| 80 |
|
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void scsi_qdev_register(SCSIDeviceInfo *info)
|
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{
|
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info->qdev.bus_info = &scsi_bus_info; |
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info->qdev.init = scsi_qdev_init; |
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info->qdev.unplug = qdev_simple_unplug_cb; |
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info->qdev.exit = scsi_qdev_exit; |
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qdev_register(&info->qdev); |
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} |
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|
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/* handle legacy '-drive if=scsi,...' cmd line args */
|
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SCSIDevice *scsi_bus_legacy_add_drive(SCSIBus *bus, BlockDriverState *bdrv, |
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int unit, bool removable) |
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{
|
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const char *driver; |
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DeviceState *dev; |
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|
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driver = bdrv_is_sg(bdrv) ? "scsi-generic" : "scsi-disk"; |
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dev = qdev_create(&bus->qbus, driver); |
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qdev_prop_set_uint32(dev, "scsi-id", unit);
|
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if (qdev_prop_exists(dev, "removable")) { |
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qdev_prop_set_bit(dev, "removable", removable);
|
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} |
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if (qdev_prop_set_drive(dev, "drive", bdrv) < 0) { |
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qdev_free(dev); |
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return NULL; |
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} |
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if (qdev_init(dev) < 0) |
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return NULL; |
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return DO_UPCAST(SCSIDevice, qdev, dev);
|
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} |
| 111 |
|
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int scsi_bus_legacy_handle_cmdline(SCSIBus *bus)
|
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{
|
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Location loc; |
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DriveInfo *dinfo; |
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int res = 0, unit; |
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|
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loc_push_none(&loc); |
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for (unit = 0; unit < bus->ndev; unit++) { |
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dinfo = drive_get(IF_SCSI, bus->busnr, unit); |
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if (dinfo == NULL) { |
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continue;
|
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} |
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qemu_opts_loc_restore(dinfo->opts); |
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if (!scsi_bus_legacy_add_drive(bus, dinfo->bdrv, unit, false)) { |
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res = -1;
|
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break;
|
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} |
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} |
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loc_pop(&loc); |
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return res;
|
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} |
| 133 |
|
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SCSIRequest *scsi_req_alloc(size_t size, SCSIDevice *d, uint32_t tag, |
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uint32_t lun, void *hba_private)
|
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{
|
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SCSIRequest *req; |
| 138 |
|
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req = qemu_mallocz(size); |
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req->refcount = 1;
|
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req->bus = scsi_bus_from_device(d); |
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req->dev = d; |
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req->tag = tag; |
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req->lun = lun; |
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req->hba_private = hba_private; |
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req->status = -1;
|
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trace_scsi_req_alloc(req->dev->id, req->lun, req->tag); |
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return req;
|
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} |
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|
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SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun, |
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void *hba_private)
|
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{
|
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return d->info->alloc_req(d, tag, lun, hba_private);
|
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} |
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|
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uint8_t *scsi_req_get_buf(SCSIRequest *req) |
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{
|
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return req->dev->info->get_buf(req);
|
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} |
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|
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int scsi_req_get_sense(SCSIRequest *req, uint8_t *buf, int len) |
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{
|
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if (req->dev->info->get_sense) {
|
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return req->dev->info->get_sense(req, buf, len);
|
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} else {
|
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return 0; |
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} |
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} |
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|
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int32_t scsi_req_enqueue(SCSIRequest *req, uint8_t *buf) |
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{
|
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int32_t rc; |
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|
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assert(!req->enqueued); |
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scsi_req_ref(req); |
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req->enqueued = true;
|
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QTAILQ_INSERT_TAIL(&req->dev->requests, req, next); |
| 179 |
|
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scsi_req_ref(req); |
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rc = req->dev->info->send_command(req, buf); |
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scsi_req_unref(req); |
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return rc;
|
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} |
| 185 |
|
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static void scsi_req_dequeue(SCSIRequest *req) |
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{
|
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trace_scsi_req_dequeue(req->dev->id, req->lun, req->tag); |
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if (req->enqueued) {
|
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QTAILQ_REMOVE(&req->dev->requests, req, next); |
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req->enqueued = false;
|
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scsi_req_unref(req); |
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} |
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} |
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|
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static int scsi_req_length(SCSIRequest *req, uint8_t *cmd) |
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{
|
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switch (cmd[0] >> 5) { |
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case 0: |
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req->cmd.xfer = cmd[4];
|
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req->cmd.len = 6;
|
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/* length 0 means 256 blocks */
|
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if (req->cmd.xfer == 0) |
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req->cmd.xfer = 256;
|
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break;
|
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case 1: |
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case 2: |
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req->cmd.xfer = cmd[8] | (cmd[7] << 8); |
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req->cmd.len = 10;
|
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break;
|
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case 4: |
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req->cmd.xfer = cmd[13] | (cmd[12] << 8) | (cmd[11] << 16) | (cmd[10] << 24); |
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req->cmd.len = 16;
|
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break;
|
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case 5: |
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req->cmd.xfer = cmd[9] | (cmd[8] << 8) | (cmd[7] << 16) | (cmd[6] << 24); |
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req->cmd.len = 12;
|
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break;
|
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default:
|
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trace_scsi_req_parse_bad(req->dev->id, req->lun, req->tag, cmd[0]);
|
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return -1; |
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} |
| 223 |
|
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switch(cmd[0]) { |
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case TEST_UNIT_READY:
|
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case REZERO_UNIT:
|
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case START_STOP:
|
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case SEEK_6:
|
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case WRITE_FILEMARKS:
|
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case SPACE:
|
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case RESERVE:
|
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case RELEASE:
|
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case ERASE:
|
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case ALLOW_MEDIUM_REMOVAL:
|
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case VERIFY:
|
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case SEEK_10:
|
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case SYNCHRONIZE_CACHE:
|
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case LOCK_UNLOCK_CACHE:
|
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case LOAD_UNLOAD:
|
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case SET_CD_SPEED:
|
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case SET_LIMITS:
|
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case WRITE_LONG:
|
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case MOVE_MEDIUM:
|
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case UPDATE_BLOCK:
|
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req->cmd.xfer = 0;
|
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break;
|
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case MODE_SENSE:
|
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break;
|
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case WRITE_SAME:
|
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req->cmd.xfer = 1;
|
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break;
|
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case READ_CAPACITY:
|
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req->cmd.xfer = 8;
|
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break;
|
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case READ_BLOCK_LIMITS:
|
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req->cmd.xfer = 6;
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break;
|
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case READ_POSITION:
|
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req->cmd.xfer = 20;
|
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break;
|
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case SEND_VOLUME_TAG:
|
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req->cmd.xfer *= 40;
|
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break;
|
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case MEDIUM_SCAN:
|
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req->cmd.xfer *= 8;
|
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break;
|
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case WRITE_10:
|
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case WRITE_VERIFY:
|
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case WRITE_6:
|
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case WRITE_12:
|
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case WRITE_VERIFY_12:
|
| 272 |
case WRITE_16:
|
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case WRITE_VERIFY_16:
|
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req->cmd.xfer *= req->dev->blocksize; |
| 275 |
break;
|
| 276 |
case READ_10:
|
| 277 |
case READ_6:
|
| 278 |
case READ_REVERSE:
|
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case RECOVER_BUFFERED_DATA:
|
| 280 |
case READ_12:
|
| 281 |
case READ_16:
|
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req->cmd.xfer *= req->dev->blocksize; |
| 283 |
break;
|
| 284 |
case INQUIRY:
|
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req->cmd.xfer = cmd[4] | (cmd[3] << 8); |
| 286 |
break;
|
| 287 |
case MAINTENANCE_OUT:
|
| 288 |
case MAINTENANCE_IN:
|
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if (req->dev->type == TYPE_ROM) {
|
| 290 |
/* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */
|
| 291 |
req->cmd.xfer = cmd[9] | (cmd[8] << 8); |
| 292 |
} |
| 293 |
break;
|
| 294 |
} |
| 295 |
return 0; |
| 296 |
} |
| 297 |
|
| 298 |
static int scsi_req_stream_length(SCSIRequest *req, uint8_t *cmd) |
| 299 |
{
|
| 300 |
switch(cmd[0]) { |
| 301 |
/* stream commands */
|
| 302 |
case READ_6:
|
| 303 |
case READ_REVERSE:
|
| 304 |
case RECOVER_BUFFERED_DATA:
|
| 305 |
case WRITE_6:
|
| 306 |
req->cmd.len = 6;
|
| 307 |
req->cmd.xfer = cmd[4] | (cmd[3] << 8) | (cmd[2] << 16); |
| 308 |
if (cmd[1] & 0x01) /* fixed */ |
| 309 |
req->cmd.xfer *= req->dev->blocksize; |
| 310 |
break;
|
| 311 |
case REWIND:
|
| 312 |
case START_STOP:
|
| 313 |
req->cmd.len = 6;
|
| 314 |
req->cmd.xfer = 0;
|
| 315 |
break;
|
| 316 |
/* generic commands */
|
| 317 |
default:
|
| 318 |
return scsi_req_length(req, cmd);
|
| 319 |
} |
| 320 |
return 0; |
| 321 |
} |
| 322 |
|
| 323 |
static void scsi_req_xfer_mode(SCSIRequest *req) |
| 324 |
{
|
| 325 |
switch (req->cmd.buf[0]) { |
| 326 |
case WRITE_6:
|
| 327 |
case WRITE_10:
|
| 328 |
case WRITE_VERIFY:
|
| 329 |
case WRITE_12:
|
| 330 |
case WRITE_VERIFY_12:
|
| 331 |
case WRITE_16:
|
| 332 |
case WRITE_VERIFY_16:
|
| 333 |
case COPY:
|
| 334 |
case COPY_VERIFY:
|
| 335 |
case COMPARE:
|
| 336 |
case CHANGE_DEFINITION:
|
| 337 |
case LOG_SELECT:
|
| 338 |
case MODE_SELECT:
|
| 339 |
case MODE_SELECT_10:
|
| 340 |
case SEND_DIAGNOSTIC:
|
| 341 |
case WRITE_BUFFER:
|
| 342 |
case FORMAT_UNIT:
|
| 343 |
case REASSIGN_BLOCKS:
|
| 344 |
case SEARCH_EQUAL:
|
| 345 |
case SEARCH_HIGH:
|
| 346 |
case SEARCH_LOW:
|
| 347 |
case UPDATE_BLOCK:
|
| 348 |
case WRITE_LONG:
|
| 349 |
case WRITE_SAME:
|
| 350 |
case SEARCH_HIGH_12:
|
| 351 |
case SEARCH_EQUAL_12:
|
| 352 |
case SEARCH_LOW_12:
|
| 353 |
case SET_WINDOW:
|
| 354 |
case MEDIUM_SCAN:
|
| 355 |
case SEND_VOLUME_TAG:
|
| 356 |
case WRITE_LONG_2:
|
| 357 |
case PERSISTENT_RESERVE_OUT:
|
| 358 |
case MAINTENANCE_OUT:
|
| 359 |
req->cmd.mode = SCSI_XFER_TO_DEV; |
| 360 |
break;
|
| 361 |
default:
|
| 362 |
if (req->cmd.xfer)
|
| 363 |
req->cmd.mode = SCSI_XFER_FROM_DEV; |
| 364 |
else {
|
| 365 |
req->cmd.mode = SCSI_XFER_NONE; |
| 366 |
} |
| 367 |
break;
|
| 368 |
} |
| 369 |
} |
| 370 |
|
| 371 |
static uint64_t scsi_req_lba(SCSIRequest *req)
|
| 372 |
{
|
| 373 |
uint8_t *buf = req->cmd.buf; |
| 374 |
uint64_t lba; |
| 375 |
|
| 376 |
switch (buf[0] >> 5) { |
| 377 |
case 0: |
| 378 |
lba = (uint64_t) buf[3] | ((uint64_t) buf[2] << 8) | |
| 379 |
(((uint64_t) buf[1] & 0x1f) << 16); |
| 380 |
break;
|
| 381 |
case 1: |
| 382 |
case 2: |
| 383 |
lba = (uint64_t) buf[5] | ((uint64_t) buf[4] << 8) | |
| 384 |
((uint64_t) buf[3] << 16) | ((uint64_t) buf[2] << 24); |
| 385 |
break;
|
| 386 |
case 4: |
| 387 |
lba = (uint64_t) buf[9] | ((uint64_t) buf[8] << 8) | |
| 388 |
((uint64_t) buf[7] << 16) | ((uint64_t) buf[6] << 24) | |
| 389 |
((uint64_t) buf[5] << 32) | ((uint64_t) buf[4] << 40) | |
| 390 |
((uint64_t) buf[3] << 48) | ((uint64_t) buf[2] << 56); |
| 391 |
break;
|
| 392 |
case 5: |
| 393 |
lba = (uint64_t) buf[5] | ((uint64_t) buf[4] << 8) | |
| 394 |
((uint64_t) buf[3] << 16) | ((uint64_t) buf[2] << 24); |
| 395 |
break;
|
| 396 |
default:
|
| 397 |
lba = -1;
|
| 398 |
|
| 399 |
} |
| 400 |
return lba;
|
| 401 |
} |
| 402 |
|
| 403 |
int scsi_req_parse(SCSIRequest *req, uint8_t *buf)
|
| 404 |
{
|
| 405 |
int rc;
|
| 406 |
|
| 407 |
if (req->dev->type == TYPE_TAPE) {
|
| 408 |
rc = scsi_req_stream_length(req, buf); |
| 409 |
} else {
|
| 410 |
rc = scsi_req_length(req, buf); |
| 411 |
} |
| 412 |
if (rc != 0) |
| 413 |
return rc;
|
| 414 |
|
| 415 |
memcpy(req->cmd.buf, buf, req->cmd.len); |
| 416 |
scsi_req_xfer_mode(req); |
| 417 |
req->cmd.lba = scsi_req_lba(req); |
| 418 |
trace_scsi_req_parsed(req->dev->id, req->lun, req->tag, buf[0],
|
| 419 |
req->cmd.mode, req->cmd.xfer); |
| 420 |
if (req->cmd.lba != -1) { |
| 421 |
trace_scsi_req_parsed_lba(req->dev->id, req->lun, req->tag, buf[0],
|
| 422 |
req->cmd.lba); |
| 423 |
} |
| 424 |
return 0; |
| 425 |
} |
| 426 |
|
| 427 |
/*
|
| 428 |
* Predefined sense codes
|
| 429 |
*/
|
| 430 |
|
| 431 |
/* No sense data available */
|
| 432 |
const struct SCSISense sense_code_NO_SENSE = { |
| 433 |
.key = NO_SENSE , .asc = 0x00 , .ascq = 0x00 |
| 434 |
}; |
| 435 |
|
| 436 |
/* LUN not ready, Manual intervention required */
|
| 437 |
const struct SCSISense sense_code_LUN_NOT_READY = { |
| 438 |
.key = NOT_READY, .asc = 0x04, .ascq = 0x03 |
| 439 |
}; |
| 440 |
|
| 441 |
/* LUN not ready, Medium not present */
|
| 442 |
const struct SCSISense sense_code_NO_MEDIUM = { |
| 443 |
.key = NOT_READY, .asc = 0x3a, .ascq = 0x00 |
| 444 |
}; |
| 445 |
|
| 446 |
/* Hardware error, internal target failure */
|
| 447 |
const struct SCSISense sense_code_TARGET_FAILURE = { |
| 448 |
.key = HARDWARE_ERROR, .asc = 0x44, .ascq = 0x00 |
| 449 |
}; |
| 450 |
|
| 451 |
/* Illegal request, invalid command operation code */
|
| 452 |
const struct SCSISense sense_code_INVALID_OPCODE = { |
| 453 |
.key = ILLEGAL_REQUEST, .asc = 0x20, .ascq = 0x00 |
| 454 |
}; |
| 455 |
|
| 456 |
/* Illegal request, LBA out of range */
|
| 457 |
const struct SCSISense sense_code_LBA_OUT_OF_RANGE = { |
| 458 |
.key = ILLEGAL_REQUEST, .asc = 0x21, .ascq = 0x00 |
| 459 |
}; |
| 460 |
|
| 461 |
/* Illegal request, Invalid field in CDB */
|
| 462 |
const struct SCSISense sense_code_INVALID_FIELD = { |
| 463 |
.key = ILLEGAL_REQUEST, .asc = 0x24, .ascq = 0x00 |
| 464 |
}; |
| 465 |
|
| 466 |
/* Illegal request, LUN not supported */
|
| 467 |
const struct SCSISense sense_code_LUN_NOT_SUPPORTED = { |
| 468 |
.key = ILLEGAL_REQUEST, .asc = 0x25, .ascq = 0x00 |
| 469 |
}; |
| 470 |
|
| 471 |
/* Command aborted, I/O process terminated */
|
| 472 |
const struct SCSISense sense_code_IO_ERROR = { |
| 473 |
.key = ABORTED_COMMAND, .asc = 0x00, .ascq = 0x06 |
| 474 |
}; |
| 475 |
|
| 476 |
/* Command aborted, I_T Nexus loss occurred */
|
| 477 |
const struct SCSISense sense_code_I_T_NEXUS_LOSS = { |
| 478 |
.key = ABORTED_COMMAND, .asc = 0x29, .ascq = 0x07 |
| 479 |
}; |
| 480 |
|
| 481 |
/* Command aborted, Logical Unit failure */
|
| 482 |
const struct SCSISense sense_code_LUN_FAILURE = { |
| 483 |
.key = ABORTED_COMMAND, .asc = 0x3e, .ascq = 0x01 |
| 484 |
}; |
| 485 |
|
| 486 |
/*
|
| 487 |
* scsi_build_sense
|
| 488 |
*
|
| 489 |
* Build a sense buffer
|
| 490 |
*/
|
| 491 |
int scsi_build_sense(SCSISense sense, uint8_t *buf, int len, int fixed) |
| 492 |
{
|
| 493 |
if (!fixed && len < 8) { |
| 494 |
return 0; |
| 495 |
} |
| 496 |
|
| 497 |
memset(buf, 0, len);
|
| 498 |
if (fixed) {
|
| 499 |
/* Return fixed format sense buffer */
|
| 500 |
buf[0] = 0xf0; |
| 501 |
buf[2] = sense.key;
|
| 502 |
buf[7] = 7; |
| 503 |
buf[12] = sense.asc;
|
| 504 |
buf[13] = sense.ascq;
|
| 505 |
return MIN(len, 18); |
| 506 |
} else {
|
| 507 |
/* Return descriptor format sense buffer */
|
| 508 |
buf[0] = 0x72; |
| 509 |
buf[1] = sense.key;
|
| 510 |
buf[2] = sense.asc;
|
| 511 |
buf[3] = sense.ascq;
|
| 512 |
return 8; |
| 513 |
} |
| 514 |
} |
| 515 |
|
| 516 |
static const char *scsi_command_name(uint8_t cmd) |
| 517 |
{
|
| 518 |
static const char *names[] = { |
| 519 |
[ TEST_UNIT_READY ] = "TEST_UNIT_READY",
|
| 520 |
[ REZERO_UNIT ] = "REZERO_UNIT",
|
| 521 |
/* REWIND and REZERO_UNIT use the same operation code */
|
| 522 |
[ REQUEST_SENSE ] = "REQUEST_SENSE",
|
| 523 |
[ FORMAT_UNIT ] = "FORMAT_UNIT",
|
| 524 |
[ READ_BLOCK_LIMITS ] = "READ_BLOCK_LIMITS",
|
| 525 |
[ REASSIGN_BLOCKS ] = "REASSIGN_BLOCKS",
|
| 526 |
[ READ_6 ] = "READ_6",
|
| 527 |
[ WRITE_6 ] = "WRITE_6",
|
| 528 |
[ SEEK_6 ] = "SEEK_6",
|
| 529 |
[ READ_REVERSE ] = "READ_REVERSE",
|
| 530 |
[ WRITE_FILEMARKS ] = "WRITE_FILEMARKS",
|
| 531 |
[ SPACE ] = "SPACE",
|
| 532 |
[ INQUIRY ] = "INQUIRY",
|
| 533 |
[ RECOVER_BUFFERED_DATA ] = "RECOVER_BUFFERED_DATA",
|
| 534 |
[ MAINTENANCE_IN ] = "MAINTENANCE_IN",
|
| 535 |
[ MAINTENANCE_OUT ] = "MAINTENANCE_OUT",
|
| 536 |
[ MODE_SELECT ] = "MODE_SELECT",
|
| 537 |
[ RESERVE ] = "RESERVE",
|
| 538 |
[ RELEASE ] = "RELEASE",
|
| 539 |
[ COPY ] = "COPY",
|
| 540 |
[ ERASE ] = "ERASE",
|
| 541 |
[ MODE_SENSE ] = "MODE_SENSE",
|
| 542 |
[ START_STOP ] = "START_STOP",
|
| 543 |
[ RECEIVE_DIAGNOSTIC ] = "RECEIVE_DIAGNOSTIC",
|
| 544 |
[ SEND_DIAGNOSTIC ] = "SEND_DIAGNOSTIC",
|
| 545 |
[ ALLOW_MEDIUM_REMOVAL ] = "ALLOW_MEDIUM_REMOVAL",
|
| 546 |
|
| 547 |
[ SET_WINDOW ] = "SET_WINDOW",
|
| 548 |
[ READ_CAPACITY ] = "READ_CAPACITY",
|
| 549 |
[ READ_10 ] = "READ_10",
|
| 550 |
[ WRITE_10 ] = "WRITE_10",
|
| 551 |
[ SEEK_10 ] = "SEEK_10",
|
| 552 |
[ WRITE_VERIFY ] = "WRITE_VERIFY",
|
| 553 |
[ VERIFY ] = "VERIFY",
|
| 554 |
[ SEARCH_HIGH ] = "SEARCH_HIGH",
|
| 555 |
[ SEARCH_EQUAL ] = "SEARCH_EQUAL",
|
| 556 |
[ SEARCH_LOW ] = "SEARCH_LOW",
|
| 557 |
[ SET_LIMITS ] = "SET_LIMITS",
|
| 558 |
[ PRE_FETCH ] = "PRE_FETCH",
|
| 559 |
/* READ_POSITION and PRE_FETCH use the same operation code */
|
| 560 |
[ SYNCHRONIZE_CACHE ] = "SYNCHRONIZE_CACHE",
|
| 561 |
[ LOCK_UNLOCK_CACHE ] = "LOCK_UNLOCK_CACHE",
|
| 562 |
[ READ_DEFECT_DATA ] = "READ_DEFECT_DATA",
|
| 563 |
[ MEDIUM_SCAN ] = "MEDIUM_SCAN",
|
| 564 |
[ COMPARE ] = "COMPARE",
|
| 565 |
[ COPY_VERIFY ] = "COPY_VERIFY",
|
| 566 |
[ WRITE_BUFFER ] = "WRITE_BUFFER",
|
| 567 |
[ READ_BUFFER ] = "READ_BUFFER",
|
| 568 |
[ UPDATE_BLOCK ] = "UPDATE_BLOCK",
|
| 569 |
[ READ_LONG ] = "READ_LONG",
|
| 570 |
[ WRITE_LONG ] = "WRITE_LONG",
|
| 571 |
[ CHANGE_DEFINITION ] = "CHANGE_DEFINITION",
|
| 572 |
[ WRITE_SAME ] = "WRITE_SAME",
|
| 573 |
[ READ_TOC ] = "READ_TOC",
|
| 574 |
[ LOG_SELECT ] = "LOG_SELECT",
|
| 575 |
[ LOG_SENSE ] = "LOG_SENSE",
|
| 576 |
[ MODE_SELECT_10 ] = "MODE_SELECT_10",
|
| 577 |
[ RESERVE_10 ] = "RESERVE_10",
|
| 578 |
[ RELEASE_10 ] = "RELEASE_10",
|
| 579 |
[ MODE_SENSE_10 ] = "MODE_SENSE_10",
|
| 580 |
[ PERSISTENT_RESERVE_IN ] = "PERSISTENT_RESERVE_IN",
|
| 581 |
[ PERSISTENT_RESERVE_OUT ] = "PERSISTENT_RESERVE_OUT",
|
| 582 |
[ MOVE_MEDIUM ] = "MOVE_MEDIUM",
|
| 583 |
[ READ_12 ] = "READ_12",
|
| 584 |
[ WRITE_12 ] = "WRITE_12",
|
| 585 |
[ WRITE_VERIFY_12 ] = "WRITE_VERIFY_12",
|
| 586 |
[ SEARCH_HIGH_12 ] = "SEARCH_HIGH_12",
|
| 587 |
[ SEARCH_EQUAL_12 ] = "SEARCH_EQUAL_12",
|
| 588 |
[ SEARCH_LOW_12 ] = "SEARCH_LOW_12",
|
| 589 |
[ READ_ELEMENT_STATUS ] = "READ_ELEMENT_STATUS",
|
| 590 |
[ SEND_VOLUME_TAG ] = "SEND_VOLUME_TAG",
|
| 591 |
[ WRITE_LONG_2 ] = "WRITE_LONG_2",
|
| 592 |
|
| 593 |
[ REPORT_DENSITY_SUPPORT ] = "REPORT_DENSITY_SUPPORT",
|
| 594 |
[ GET_CONFIGURATION ] = "GET_CONFIGURATION",
|
| 595 |
[ READ_16 ] = "READ_16",
|
| 596 |
[ WRITE_16 ] = "WRITE_16",
|
| 597 |
[ WRITE_VERIFY_16 ] = "WRITE_VERIFY_16",
|
| 598 |
[ SERVICE_ACTION_IN ] = "SERVICE_ACTION_IN",
|
| 599 |
[ REPORT_LUNS ] = "REPORT_LUNS",
|
| 600 |
[ LOAD_UNLOAD ] = "LOAD_UNLOAD",
|
| 601 |
[ SET_CD_SPEED ] = "SET_CD_SPEED",
|
| 602 |
[ BLANK ] = "BLANK",
|
| 603 |
}; |
| 604 |
|
| 605 |
if (cmd >= ARRAY_SIZE(names) || names[cmd] == NULL) |
| 606 |
return "*UNKNOWN*"; |
| 607 |
return names[cmd];
|
| 608 |
} |
| 609 |
|
| 610 |
SCSIRequest *scsi_req_ref(SCSIRequest *req) |
| 611 |
{
|
| 612 |
req->refcount++; |
| 613 |
return req;
|
| 614 |
} |
| 615 |
|
| 616 |
void scsi_req_unref(SCSIRequest *req)
|
| 617 |
{
|
| 618 |
if (--req->refcount == 0) { |
| 619 |
if (req->dev->info->free_req) {
|
| 620 |
req->dev->info->free_req(req); |
| 621 |
} |
| 622 |
qemu_free(req); |
| 623 |
} |
| 624 |
} |
| 625 |
|
| 626 |
/* Tell the device that we finished processing this chunk of I/O. It
|
| 627 |
will start the next chunk or complete the command. */
|
| 628 |
void scsi_req_continue(SCSIRequest *req)
|
| 629 |
{
|
| 630 |
trace_scsi_req_continue(req->dev->id, req->lun, req->tag); |
| 631 |
if (req->cmd.mode == SCSI_XFER_TO_DEV) {
|
| 632 |
req->dev->info->write_data(req); |
| 633 |
} else {
|
| 634 |
req->dev->info->read_data(req); |
| 635 |
} |
| 636 |
} |
| 637 |
|
| 638 |
/* Called by the devices when data is ready for the HBA. The HBA should
|
| 639 |
start a DMA operation to read or fill the device's data buffer.
|
| 640 |
Once it completes, calling scsi_req_continue will restart I/O. */
|
| 641 |
void scsi_req_data(SCSIRequest *req, int len) |
| 642 |
{
|
| 643 |
trace_scsi_req_data(req->dev->id, req->lun, req->tag, len); |
| 644 |
req->bus->ops->transfer_data(req, len); |
| 645 |
} |
| 646 |
|
| 647 |
void scsi_req_print(SCSIRequest *req)
|
| 648 |
{
|
| 649 |
FILE *fp = stderr; |
| 650 |
int i;
|
| 651 |
|
| 652 |
fprintf(fp, "[%s id=%d] %s",
|
| 653 |
req->dev->qdev.parent_bus->name, |
| 654 |
req->dev->id, |
| 655 |
scsi_command_name(req->cmd.buf[0]));
|
| 656 |
for (i = 1; i < req->cmd.len; i++) { |
| 657 |
fprintf(fp, " 0x%02x", req->cmd.buf[i]);
|
| 658 |
} |
| 659 |
switch (req->cmd.mode) {
|
| 660 |
case SCSI_XFER_NONE:
|
| 661 |
fprintf(fp, " - none\n");
|
| 662 |
break;
|
| 663 |
case SCSI_XFER_FROM_DEV:
|
| 664 |
fprintf(fp, " - from-dev len=%zd\n", req->cmd.xfer);
|
| 665 |
break;
|
| 666 |
case SCSI_XFER_TO_DEV:
|
| 667 |
fprintf(fp, " - to-dev len=%zd\n", req->cmd.xfer);
|
| 668 |
break;
|
| 669 |
default:
|
| 670 |
fprintf(fp, " - Oops\n");
|
| 671 |
break;
|
| 672 |
} |
| 673 |
} |
| 674 |
|
| 675 |
void scsi_req_complete(SCSIRequest *req)
|
| 676 |
{
|
| 677 |
assert(req->status != -1);
|
| 678 |
scsi_req_ref(req); |
| 679 |
scsi_req_dequeue(req); |
| 680 |
req->bus->ops->complete(req, req->status); |
| 681 |
scsi_req_unref(req); |
| 682 |
} |
| 683 |
|
| 684 |
void scsi_req_cancel(SCSIRequest *req)
|
| 685 |
{
|
| 686 |
if (req->dev && req->dev->info->cancel_io) {
|
| 687 |
req->dev->info->cancel_io(req); |
| 688 |
} |
| 689 |
scsi_req_ref(req); |
| 690 |
scsi_req_dequeue(req); |
| 691 |
if (req->bus->ops->cancel) {
|
| 692 |
req->bus->ops->cancel(req); |
| 693 |
} |
| 694 |
scsi_req_unref(req); |
| 695 |
} |
| 696 |
|
| 697 |
void scsi_req_abort(SCSIRequest *req, int status) |
| 698 |
{
|
| 699 |
req->status = status; |
| 700 |
if (req->dev && req->dev->info->cancel_io) {
|
| 701 |
req->dev->info->cancel_io(req); |
| 702 |
} |
| 703 |
scsi_req_complete(req); |
| 704 |
} |
| 705 |
|
| 706 |
void scsi_device_purge_requests(SCSIDevice *sdev)
|
| 707 |
{
|
| 708 |
SCSIRequest *req; |
| 709 |
|
| 710 |
while (!QTAILQ_EMPTY(&sdev->requests)) {
|
| 711 |
req = QTAILQ_FIRST(&sdev->requests); |
| 712 |
scsi_req_cancel(req); |
| 713 |
} |
| 714 |
} |
| 715 |
|
| 716 |
static char *scsibus_get_fw_dev_path(DeviceState *dev) |
| 717 |
{
|
| 718 |
SCSIDevice *d = (SCSIDevice*)dev; |
| 719 |
SCSIBus *bus = scsi_bus_from_device(d); |
| 720 |
char path[100]; |
| 721 |
int i;
|
| 722 |
|
| 723 |
for (i = 0; i < bus->ndev; i++) { |
| 724 |
if (bus->devs[i] == d) {
|
| 725 |
break;
|
| 726 |
} |
| 727 |
} |
| 728 |
|
| 729 |
assert(i != bus->ndev); |
| 730 |
|
| 731 |
snprintf(path, sizeof(path), "%s@%x", qdev_fw_name(dev), i); |
| 732 |
|
| 733 |
return strdup(path);
|
| 734 |
} |