The simple backend only supports a maximum of 6 arguments. Split the scsi_req_parsed event in two parts to cope with the limit. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
732 lines
20 KiB
C
732 lines
20 KiB
C
#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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static char *scsibus_get_fw_dev_path(DeviceState *dev);
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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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/* 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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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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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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}
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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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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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err:
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return rc;
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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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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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}
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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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/* 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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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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}
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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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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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}
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SCSIRequest *scsi_req_alloc(size_t size, SCSIDevice *d, uint32_t tag, uint32_t lun)
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{
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SCSIRequest *req;
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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->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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SCSIRequest *scsi_req_new(SCSIDevice *d, uint32_t tag, uint32_t lun)
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{
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return d->info->alloc_req(d, tag, lun);
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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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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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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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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);
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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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}
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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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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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}
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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:
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case WRITE_16:
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case WRITE_VERIFY_16:
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req->cmd.xfer *= req->dev->blocksize;
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break;
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case READ_10:
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case READ_6:
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case READ_REVERSE:
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case RECOVER_BUFFERED_DATA:
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case READ_12:
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case READ_16:
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req->cmd.xfer *= req->dev->blocksize;
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break;
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case INQUIRY:
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req->cmd.xfer = cmd[4] | (cmd[3] << 8);
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break;
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case MAINTENANCE_OUT:
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case MAINTENANCE_IN:
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if (req->dev->type == TYPE_ROM) {
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/* GPCMD_REPORT_KEY and GPCMD_SEND_KEY from multi media commands */
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req->cmd.xfer = cmd[9] | (cmd[8] << 8);
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}
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break;
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}
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return 0;
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}
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static int scsi_req_stream_length(SCSIRequest *req, uint8_t *cmd)
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{
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switch(cmd[0]) {
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/* stream commands */
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case READ_6:
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case READ_REVERSE:
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case RECOVER_BUFFERED_DATA:
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case WRITE_6:
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req->cmd.len = 6;
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req->cmd.xfer = cmd[4] | (cmd[3] << 8) | (cmd[2] << 16);
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if (cmd[1] & 0x01) /* fixed */
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req->cmd.xfer *= req->dev->blocksize;
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break;
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case REWIND:
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case START_STOP:
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req->cmd.len = 6;
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req->cmd.xfer = 0;
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break;
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/* generic commands */
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default:
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return scsi_req_length(req, cmd);
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}
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return 0;
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}
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static void scsi_req_xfer_mode(SCSIRequest *req)
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{
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switch (req->cmd.buf[0]) {
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case WRITE_6:
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case WRITE_10:
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case WRITE_VERIFY:
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case WRITE_12:
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case WRITE_VERIFY_12:
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case WRITE_16:
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case WRITE_VERIFY_16:
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case COPY:
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case COPY_VERIFY:
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case COMPARE:
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case CHANGE_DEFINITION:
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case LOG_SELECT:
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case MODE_SELECT:
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case MODE_SELECT_10:
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case SEND_DIAGNOSTIC:
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case WRITE_BUFFER:
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case FORMAT_UNIT:
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case REASSIGN_BLOCKS:
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case SEARCH_EQUAL:
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case SEARCH_HIGH:
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case SEARCH_LOW:
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case UPDATE_BLOCK:
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case WRITE_LONG:
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case WRITE_SAME:
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case SEARCH_HIGH_12:
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case SEARCH_EQUAL_12:
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case SEARCH_LOW_12:
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case SET_WINDOW:
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case MEDIUM_SCAN:
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case SEND_VOLUME_TAG:
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case WRITE_LONG_2:
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case PERSISTENT_RESERVE_OUT:
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case MAINTENANCE_OUT:
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req->cmd.mode = SCSI_XFER_TO_DEV;
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break;
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default:
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if (req->cmd.xfer)
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req->cmd.mode = SCSI_XFER_FROM_DEV;
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else {
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req->cmd.mode = SCSI_XFER_NONE;
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}
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break;
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}
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}
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static uint64_t scsi_req_lba(SCSIRequest *req)
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{
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uint8_t *buf = req->cmd.buf;
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uint64_t lba;
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switch (buf[0] >> 5) {
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case 0:
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lba = (uint64_t) buf[3] | ((uint64_t) buf[2] << 8) |
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(((uint64_t) buf[1] & 0x1f) << 16);
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break;
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case 1:
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case 2:
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lba = (uint64_t) buf[5] | ((uint64_t) buf[4] << 8) |
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((uint64_t) buf[3] << 16) | ((uint64_t) buf[2] << 24);
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break;
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case 4:
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lba = (uint64_t) buf[9] | ((uint64_t) buf[8] << 8) |
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((uint64_t) buf[7] << 16) | ((uint64_t) buf[6] << 24) |
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((uint64_t) buf[5] << 32) | ((uint64_t) buf[4] << 40) |
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((uint64_t) buf[3] << 48) | ((uint64_t) buf[2] << 56);
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break;
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case 5:
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lba = (uint64_t) buf[5] | ((uint64_t) buf[4] << 8) |
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((uint64_t) buf[3] << 16) | ((uint64_t) buf[2] << 24);
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break;
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default:
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lba = -1;
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}
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return lba;
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}
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int scsi_req_parse(SCSIRequest *req, uint8_t *buf)
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{
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int rc;
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if (req->dev->type == TYPE_TAPE) {
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rc = scsi_req_stream_length(req, buf);
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} else {
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rc = scsi_req_length(req, buf);
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}
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if (rc != 0)
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return rc;
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memcpy(req->cmd.buf, buf, req->cmd.len);
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scsi_req_xfer_mode(req);
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req->cmd.lba = scsi_req_lba(req);
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trace_scsi_req_parsed(req->dev->id, req->lun, req->tag, buf[0],
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req->cmd.mode, req->cmd.xfer);
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if (req->cmd.lba != -1) {
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trace_scsi_req_parsed_lba(req->dev->id, req->lun, req->tag, buf[0],
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req->cmd.lba);
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}
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return 0;
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}
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/*
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* Predefined sense codes
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*/
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/* No sense data available */
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const struct SCSISense sense_code_NO_SENSE = {
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.key = NO_SENSE , .asc = 0x00 , .ascq = 0x00
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};
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/* LUN not ready, Manual intervention required */
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const struct SCSISense sense_code_LUN_NOT_READY = {
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.key = NOT_READY, .asc = 0x04, .ascq = 0x03
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};
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/* LUN not ready, Medium not present */
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const struct SCSISense sense_code_NO_MEDIUM = {
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.key = NOT_READY, .asc = 0x3a, .ascq = 0x00
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};
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/* Hardware error, internal target failure */
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const struct SCSISense sense_code_TARGET_FAILURE = {
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.key = HARDWARE_ERROR, .asc = 0x44, .ascq = 0x00
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};
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/* Illegal request, invalid command operation code */
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const struct SCSISense sense_code_INVALID_OPCODE = {
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.key = ILLEGAL_REQUEST, .asc = 0x20, .ascq = 0x00
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};
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/* Illegal request, LBA out of range */
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const struct SCSISense sense_code_LBA_OUT_OF_RANGE = {
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.key = ILLEGAL_REQUEST, .asc = 0x21, .ascq = 0x00
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};
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/* Illegal request, Invalid field in CDB */
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const struct SCSISense sense_code_INVALID_FIELD = {
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.key = ILLEGAL_REQUEST, .asc = 0x24, .ascq = 0x00
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};
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/* Illegal request, LUN not supported */
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const struct SCSISense sense_code_LUN_NOT_SUPPORTED = {
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.key = ILLEGAL_REQUEST, .asc = 0x25, .ascq = 0x00
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};
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/* Command aborted, I/O process terminated */
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const struct SCSISense sense_code_IO_ERROR = {
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.key = ABORTED_COMMAND, .asc = 0x00, .ascq = 0x06
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};
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/* Command aborted, I_T Nexus loss occurred */
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const struct SCSISense sense_code_I_T_NEXUS_LOSS = {
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.key = ABORTED_COMMAND, .asc = 0x29, .ascq = 0x07
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};
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/* Command aborted, Logical Unit failure */
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const struct SCSISense sense_code_LUN_FAILURE = {
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.key = ABORTED_COMMAND, .asc = 0x3e, .ascq = 0x01
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};
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/*
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* scsi_build_sense
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*
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* Build a sense buffer
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*/
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int scsi_build_sense(SCSISense sense, uint8_t *buf, int len, int fixed)
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{
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if (!fixed && len < 8) {
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return 0;
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}
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memset(buf, 0, len);
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if (fixed) {
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/* Return fixed format sense buffer */
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buf[0] = 0xf0;
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buf[2] = sense.key;
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buf[7] = 7;
|
|
buf[12] = sense.asc;
|
|
buf[13] = sense.ascq;
|
|
return MIN(len, 18);
|
|
} else {
|
|
/* Return descriptor format sense buffer */
|
|
buf[0] = 0x72;
|
|
buf[1] = sense.key;
|
|
buf[2] = sense.asc;
|
|
buf[3] = sense.ascq;
|
|
return 8;
|
|
}
|
|
}
|
|
|
|
static const char *scsi_command_name(uint8_t cmd)
|
|
{
|
|
static const char *names[] = {
|
|
[ TEST_UNIT_READY ] = "TEST_UNIT_READY",
|
|
[ REZERO_UNIT ] = "REZERO_UNIT",
|
|
/* REWIND and REZERO_UNIT use the same operation code */
|
|
[ REQUEST_SENSE ] = "REQUEST_SENSE",
|
|
[ FORMAT_UNIT ] = "FORMAT_UNIT",
|
|
[ READ_BLOCK_LIMITS ] = "READ_BLOCK_LIMITS",
|
|
[ REASSIGN_BLOCKS ] = "REASSIGN_BLOCKS",
|
|
[ READ_6 ] = "READ_6",
|
|
[ WRITE_6 ] = "WRITE_6",
|
|
[ SEEK_6 ] = "SEEK_6",
|
|
[ READ_REVERSE ] = "READ_REVERSE",
|
|
[ WRITE_FILEMARKS ] = "WRITE_FILEMARKS",
|
|
[ SPACE ] = "SPACE",
|
|
[ INQUIRY ] = "INQUIRY",
|
|
[ RECOVER_BUFFERED_DATA ] = "RECOVER_BUFFERED_DATA",
|
|
[ MAINTENANCE_IN ] = "MAINTENANCE_IN",
|
|
[ MAINTENANCE_OUT ] = "MAINTENANCE_OUT",
|
|
[ MODE_SELECT ] = "MODE_SELECT",
|
|
[ RESERVE ] = "RESERVE",
|
|
[ RELEASE ] = "RELEASE",
|
|
[ COPY ] = "COPY",
|
|
[ ERASE ] = "ERASE",
|
|
[ MODE_SENSE ] = "MODE_SENSE",
|
|
[ START_STOP ] = "START_STOP",
|
|
[ RECEIVE_DIAGNOSTIC ] = "RECEIVE_DIAGNOSTIC",
|
|
[ SEND_DIAGNOSTIC ] = "SEND_DIAGNOSTIC",
|
|
[ ALLOW_MEDIUM_REMOVAL ] = "ALLOW_MEDIUM_REMOVAL",
|
|
|
|
[ SET_WINDOW ] = "SET_WINDOW",
|
|
[ READ_CAPACITY ] = "READ_CAPACITY",
|
|
[ READ_10 ] = "READ_10",
|
|
[ WRITE_10 ] = "WRITE_10",
|
|
[ SEEK_10 ] = "SEEK_10",
|
|
[ WRITE_VERIFY ] = "WRITE_VERIFY",
|
|
[ VERIFY ] = "VERIFY",
|
|
[ SEARCH_HIGH ] = "SEARCH_HIGH",
|
|
[ SEARCH_EQUAL ] = "SEARCH_EQUAL",
|
|
[ SEARCH_LOW ] = "SEARCH_LOW",
|
|
[ SET_LIMITS ] = "SET_LIMITS",
|
|
[ PRE_FETCH ] = "PRE_FETCH",
|
|
/* READ_POSITION and PRE_FETCH use the same operation code */
|
|
[ SYNCHRONIZE_CACHE ] = "SYNCHRONIZE_CACHE",
|
|
[ LOCK_UNLOCK_CACHE ] = "LOCK_UNLOCK_CACHE",
|
|
[ READ_DEFECT_DATA ] = "READ_DEFECT_DATA",
|
|
[ MEDIUM_SCAN ] = "MEDIUM_SCAN",
|
|
[ COMPARE ] = "COMPARE",
|
|
[ COPY_VERIFY ] = "COPY_VERIFY",
|
|
[ WRITE_BUFFER ] = "WRITE_BUFFER",
|
|
[ READ_BUFFER ] = "READ_BUFFER",
|
|
[ UPDATE_BLOCK ] = "UPDATE_BLOCK",
|
|
[ READ_LONG ] = "READ_LONG",
|
|
[ WRITE_LONG ] = "WRITE_LONG",
|
|
[ CHANGE_DEFINITION ] = "CHANGE_DEFINITION",
|
|
[ WRITE_SAME ] = "WRITE_SAME",
|
|
[ READ_TOC ] = "READ_TOC",
|
|
[ LOG_SELECT ] = "LOG_SELECT",
|
|
[ LOG_SENSE ] = "LOG_SENSE",
|
|
[ MODE_SELECT_10 ] = "MODE_SELECT_10",
|
|
[ RESERVE_10 ] = "RESERVE_10",
|
|
[ RELEASE_10 ] = "RELEASE_10",
|
|
[ MODE_SENSE_10 ] = "MODE_SENSE_10",
|
|
[ PERSISTENT_RESERVE_IN ] = "PERSISTENT_RESERVE_IN",
|
|
[ PERSISTENT_RESERVE_OUT ] = "PERSISTENT_RESERVE_OUT",
|
|
[ MOVE_MEDIUM ] = "MOVE_MEDIUM",
|
|
[ READ_12 ] = "READ_12",
|
|
[ WRITE_12 ] = "WRITE_12",
|
|
[ WRITE_VERIFY_12 ] = "WRITE_VERIFY_12",
|
|
[ SEARCH_HIGH_12 ] = "SEARCH_HIGH_12",
|
|
[ SEARCH_EQUAL_12 ] = "SEARCH_EQUAL_12",
|
|
[ SEARCH_LOW_12 ] = "SEARCH_LOW_12",
|
|
[ READ_ELEMENT_STATUS ] = "READ_ELEMENT_STATUS",
|
|
[ SEND_VOLUME_TAG ] = "SEND_VOLUME_TAG",
|
|
[ WRITE_LONG_2 ] = "WRITE_LONG_2",
|
|
|
|
[ REPORT_DENSITY_SUPPORT ] = "REPORT_DENSITY_SUPPORT",
|
|
[ GET_CONFIGURATION ] = "GET_CONFIGURATION",
|
|
[ READ_16 ] = "READ_16",
|
|
[ WRITE_16 ] = "WRITE_16",
|
|
[ WRITE_VERIFY_16 ] = "WRITE_VERIFY_16",
|
|
[ SERVICE_ACTION_IN ] = "SERVICE_ACTION_IN",
|
|
[ REPORT_LUNS ] = "REPORT_LUNS",
|
|
[ LOAD_UNLOAD ] = "LOAD_UNLOAD",
|
|
[ SET_CD_SPEED ] = "SET_CD_SPEED",
|
|
[ BLANK ] = "BLANK",
|
|
};
|
|
|
|
if (cmd >= ARRAY_SIZE(names) || names[cmd] == NULL)
|
|
return "*UNKNOWN*";
|
|
return names[cmd];
|
|
}
|
|
|
|
SCSIRequest *scsi_req_ref(SCSIRequest *req)
|
|
{
|
|
req->refcount++;
|
|
return req;
|
|
}
|
|
|
|
void scsi_req_unref(SCSIRequest *req)
|
|
{
|
|
if (--req->refcount == 0) {
|
|
if (req->dev->info->free_req) {
|
|
req->dev->info->free_req(req);
|
|
}
|
|
qemu_free(req);
|
|
}
|
|
}
|
|
|
|
/* Tell the device that we finished processing this chunk of I/O. It
|
|
will start the next chunk or complete the command. */
|
|
void scsi_req_continue(SCSIRequest *req)
|
|
{
|
|
trace_scsi_req_continue(req->dev->id, req->lun, req->tag);
|
|
if (req->cmd.mode == SCSI_XFER_TO_DEV) {
|
|
req->dev->info->write_data(req);
|
|
} else {
|
|
req->dev->info->read_data(req);
|
|
}
|
|
}
|
|
|
|
/* Called by the devices when data is ready for the HBA. The HBA should
|
|
start a DMA operation to read or fill the device's data buffer.
|
|
Once it completes, calling scsi_req_continue will restart I/O. */
|
|
void scsi_req_data(SCSIRequest *req, int len)
|
|
{
|
|
trace_scsi_req_data(req->dev->id, req->lun, req->tag, len);
|
|
req->bus->ops->transfer_data(req, len);
|
|
}
|
|
|
|
void scsi_req_print(SCSIRequest *req)
|
|
{
|
|
FILE *fp = stderr;
|
|
int i;
|
|
|
|
fprintf(fp, "[%s id=%d] %s",
|
|
req->dev->qdev.parent_bus->name,
|
|
req->dev->id,
|
|
scsi_command_name(req->cmd.buf[0]));
|
|
for (i = 1; i < req->cmd.len; i++) {
|
|
fprintf(fp, " 0x%02x", req->cmd.buf[i]);
|
|
}
|
|
switch (req->cmd.mode) {
|
|
case SCSI_XFER_NONE:
|
|
fprintf(fp, " - none\n");
|
|
break;
|
|
case SCSI_XFER_FROM_DEV:
|
|
fprintf(fp, " - from-dev len=%zd\n", req->cmd.xfer);
|
|
break;
|
|
case SCSI_XFER_TO_DEV:
|
|
fprintf(fp, " - to-dev len=%zd\n", req->cmd.xfer);
|
|
break;
|
|
default:
|
|
fprintf(fp, " - Oops\n");
|
|
break;
|
|
}
|
|
}
|
|
|
|
void scsi_req_complete(SCSIRequest *req)
|
|
{
|
|
assert(req->status != -1);
|
|
scsi_req_ref(req);
|
|
scsi_req_dequeue(req);
|
|
req->bus->ops->complete(req, req->status);
|
|
scsi_req_unref(req);
|
|
}
|
|
|
|
void scsi_req_cancel(SCSIRequest *req)
|
|
{
|
|
if (req->dev && req->dev->info->cancel_io) {
|
|
req->dev->info->cancel_io(req);
|
|
}
|
|
scsi_req_ref(req);
|
|
scsi_req_dequeue(req);
|
|
if (req->bus->ops->cancel) {
|
|
req->bus->ops->cancel(req);
|
|
}
|
|
scsi_req_unref(req);
|
|
}
|
|
|
|
void scsi_req_abort(SCSIRequest *req, int status)
|
|
{
|
|
req->status = status;
|
|
if (req->dev && req->dev->info->cancel_io) {
|
|
req->dev->info->cancel_io(req);
|
|
}
|
|
scsi_req_complete(req);
|
|
}
|
|
|
|
void scsi_device_purge_requests(SCSIDevice *sdev)
|
|
{
|
|
SCSIRequest *req;
|
|
|
|
while (!QTAILQ_EMPTY(&sdev->requests)) {
|
|
req = QTAILQ_FIRST(&sdev->requests);
|
|
scsi_req_cancel(req);
|
|
}
|
|
}
|
|
|
|
static char *scsibus_get_fw_dev_path(DeviceState *dev)
|
|
{
|
|
SCSIDevice *d = (SCSIDevice*)dev;
|
|
SCSIBus *bus = scsi_bus_from_device(d);
|
|
char path[100];
|
|
int i;
|
|
|
|
for (i = 0; i < bus->ndev; i++) {
|
|
if (bus->devs[i] == d) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
assert(i != bus->ndev);
|
|
|
|
snprintf(path, sizeof(path), "%s@%x", qdev_fw_name(dev), i);
|
|
|
|
return strdup(path);
|
|
}
|