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scsi: add channel to addressing 

This also requires little more than adding the new argument to
scsi_device_find, and the qdev property.  All devices by default
end up on channel 0.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Paolo Bonzini 2011-07-27 23:24:50 +02:00 committed by Kevin Wolf
parent 7e0380b9bb
commit 0d3545e76c
5 changed files with 25 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
hw/esp.c
View File

@ -217,7 +217,7 @@ static uint32_t get_cmd(ESPState *s, uint8_t *buf)
s->async_len = 0;
}
s->current_dev = scsi_device_find(&s->bus, target, 0);
s->current_dev = scsi_device_find(&s->bus, 0, target, 0);
if (!s->current_dev) {
// No such drive
s->rregs[ESP_RSTAT] = 0;
@ -237,7 +237,7 @@ static void do_busid_cmd(ESPState *s, uint8_t *buf, uint8_t busid)
trace_esp_do_busid_cmd(busid);
lun = busid & 7;
current_lun = scsi_device_find(&s->bus, s->current_dev->id, lun);
current_lun = scsi_device_find(&s->bus, 0, s->current_dev->id, lun);
s->current_req = scsi_req_new(current_lun, 0, lun, buf, NULL);
datalen = scsi_req_enqueue(s->current_req);
s->ti_size = datalen;

4
hw/lsi53c895a.c
View File

@ -767,7 +767,7 @@ static void lsi_do_command(LSIState *s)
s->command_complete = 0;
id = (s->select_tag >> 8) & 0xf;
dev = scsi_device_find(&s->bus, id, s->current_lun);
dev = scsi_device_find(&s->bus, 0, id, s->current_lun);
if (!dev) {
lsi_bad_selection(s, id);
return;
@ -1198,7 +1198,7 @@ again:
}
s->sstat0 |= LSI_SSTAT0_WOA;
s->scntl1 &= ~LSI_SCNTL1_IARB;
if (!scsi_device_find(&s->bus, id, 0)) {
if (!scsi_device_find(&s->bus, 0, id, 0)) {
lsi_bad_selection(s, id);
break;
}

24
hw/scsi-bus.c
View File

@ -16,6 +16,7 @@ static struct BusInfo scsi_bus_info = {
.size = sizeof(SCSIBus),
.get_fw_dev_path = scsibus_get_fw_dev_path,
.props = (Property[]) {
DEFINE_PROP_UINT32("channel", SCSIDevice, channel, 0),
DEFINE_PROP_UINT32("scsi-id", SCSIDevice, id, -1),
DEFINE_PROP_UINT32("lun", SCSIDevice, lun, -1),
DEFINE_PROP_END_OF_LIST(),
@ -40,6 +41,10 @@ static int scsi_qdev_init(DeviceState *qdev, DeviceInfo *base)
SCSIDevice *d;
int rc = -1;
if (dev->channel > bus->info->max_channel) {
error_report("bad scsi channel id: %d", dev->channel);
goto err;
}
if (dev->id != -1 && dev->id > bus->info->max_target) {
error_report("bad scsi device id: %d", dev->id);
goto err;
@ -51,7 +56,7 @@ static int scsi_qdev_init(DeviceState *qdev, DeviceInfo *base)
dev->lun = 0;
}
do {
d = scsi_device_find(bus, ++id, dev->lun);
d = scsi_device_find(bus, dev->channel, ++id, dev->lun);
} while (d && d->lun == dev->lun && id <= bus->info->max_target);
if (id > bus->info->max_target) {
error_report("no free target");
@ -61,7 +66,7 @@ static int scsi_qdev_init(DeviceState *qdev, DeviceInfo *base)
} else if (dev->lun == -1) {
int lun = -1;
do {
d = scsi_device_find(bus, dev->id, ++lun);
d = scsi_device_find(bus, dev->channel, dev->id, ++lun);
} while (d && d->lun == lun && lun < bus->info->max_lun);
if (lun > bus->info->max_lun) {
error_report("no free lun");
@ -69,7 +74,7 @@ static int scsi_qdev_init(DeviceState *qdev, DeviceInfo *base)
}
dev->lun = lun;
} else {
d = scsi_device_find(bus, dev->id, dev->lun);
d = scsi_device_find(bus, dev->channel, dev->id, dev->lun);
if (dev->lun == d->lun && dev != d) {
qdev_free(&d->qdev);
}
@ -203,7 +208,7 @@ static bool scsi_target_emulate_report_luns(SCSITargetReq *r)
{
DeviceState *qdev;
int i, len, n;
int id;
int channel, id;
bool found_lun0;
if (r->req.cmd.xfer < 16) {
@ -212,13 +217,14 @@ static bool scsi_target_emulate_report_luns(SCSITargetReq *r)
if (r->req.cmd.buf[2] > 2) {
return false;
}
channel = r->req.dev->channel;
id = r->req.dev->id;
found_lun0 = false;
n = 0;
QTAILQ_FOREACH(qdev, &r->req.bus->qbus.children, sibling) {
SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev);
if (dev->id == id) {
if (dev->channel == channel && dev->id == id) {
if (dev->lun == 0) {
found_lun0 = true;
}
@ -240,7 +246,7 @@ static bool scsi_target_emulate_report_luns(SCSITargetReq *r)
QTAILQ_FOREACH(qdev, &r->req.bus->qbus.children, sibling) {
SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev);
if (dev->id == id) {
if (dev->channel == channel && dev->id == id) {
store_lun(&r->buf[i], dev->lun);
i += 8;
}
@ -1203,12 +1209,12 @@ static char *scsibus_get_fw_dev_path(DeviceState *dev)
char path[100];
snprintf(path, sizeof(path), "%s@%d:%d:%d", qdev_fw_name(dev),
0, d->id, d->lun);
d->channel, d->id, d->lun);
return strdup(path);
}
SCSIDevice *scsi_device_find(SCSIBus *bus, int id, int lun)
SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int id, int lun)
{
DeviceState *qdev;
SCSIDevice *target_dev = NULL;
@ -1216,7 +1222,7 @@ SCSIDevice *scsi_device_find(SCSIBus *bus, int id, int lun)
QTAILQ_FOREACH_REVERSE(qdev, &bus->qbus.children, ChildrenHead, sibling) {
SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev);
if (dev->id == id) {
if (dev->channel == channel && dev->id == id) {
if (dev->lun == lun) {
return dev;
}

5
hw/scsi.h
View File

@ -66,6 +66,7 @@ struct SCSIDevice
uint8_t sense[SCSI_SENSE_BUF_SIZE];
uint32_t sense_len;
QTAILQ_HEAD(, SCSIRequest) requests;
uint32_t channel;
uint32_t lun;
int blocksize;
int type;
@ -99,7 +100,7 @@ struct SCSIDeviceInfo {
struct SCSIBusInfo {
int tcq;
int max_target, max_lun;
int max_channel, max_target, max_lun;
void (*transfer_data)(SCSIRequest *req, uint32_t arg);
void (*complete)(SCSIRequest *req, uint32_t arg);
void (*cancel)(SCSIRequest *req);
@ -194,6 +195,6 @@ void scsi_req_abort(SCSIRequest *req, int status);
void scsi_req_cancel(SCSIRequest *req);
void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense);
int scsi_device_get_sense(SCSIDevice *dev, uint8_t *buf, int len, bool fixed);
SCSIDevice *scsi_device_find(SCSIBus *bus, int target, int lun);
SCSIDevice *scsi_device_find(SCSIBus *bus, int channel, int target, int lun);
#endif

9
hw/spapr_vscsi.c
View File

@ -160,11 +160,7 @@ retry:
abort();
}
if (channel) {
*lun = -1;
return NULL;
}
return scsi_device_find(bus, id, *lun);
return scsi_device_find(bus, channel, id, *lun);
}
static int vscsi_send_iu(VSCSIState *s, vscsi_req *req,
@ -892,7 +888,8 @@ static int vscsi_do_crq(struct VIOsPAPRDevice *dev, uint8_t *crq_data)
static const struct SCSIBusInfo vscsi_scsi_info = {
.tcq = true,
.max_target = 63, /* logical unit addressing format */
.max_channel = 7, /* logical unit addressing format */
.max_target = 63,
.max_lun = 31,
.transfer_data = vscsi_transfer_data,