aboutsummaryrefslogtreecommitdiff
path: root/hw
diff options
context:
space:
mode:
Diffstat (limited to 'hw')
-rw-r--r--hw/esp.c8
-rw-r--r--hw/lsi53c895a.c22
-rw-r--r--hw/qdev.h2
-rw-r--r--hw/scsi-bus.c53
-rw-r--r--hw/scsi.h3
-rw-r--r--hw/spapr_vscsi.c14
6 files changed, 50 insertions, 52 deletions
diff --git a/hw/esp.c b/hw/esp.c
index d3fb1c6..aad290f 100644
--- a/hw/esp.c
+++ b/hw/esp.c
@@ -217,7 +217,8 @@ static uint32_t get_cmd(ESPState *s, uint8_t *buf)
s->async_len = 0;
}
- if (target >= ESP_MAX_DEVS || !s->bus.devs[target]) {
+ s->current_dev = scsi_device_find(&s->bus, target, 0);
+ if (!s->current_dev) {
// No such drive
s->rregs[ESP_RSTAT] = 0;
s->rregs[ESP_RINTR] = INTR_DC;
@@ -225,7 +226,6 @@ static uint32_t get_cmd(ESPState *s, uint8_t *buf)
esp_raise_irq(s);
return 0;
}
- s->current_dev = s->bus.devs[target];
return dmalen;
}
@@ -233,10 +233,12 @@ static void do_busid_cmd(ESPState *s, uint8_t *buf, uint8_t busid)
{
int32_t datalen;
int lun;
+ SCSIDevice *current_lun;
trace_esp_do_busid_cmd(busid);
lun = busid & 7;
- s->current_req = scsi_req_new(s->current_dev, 0, lun, buf, NULL);
+ current_lun = scsi_device_find(&s->bus, 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;
if (datalen != 0) {
diff --git a/hw/lsi53c895a.c b/hw/lsi53c895a.c
index 4eeb496..c15f167 100644
--- a/hw/lsi53c895a.c
+++ b/hw/lsi53c895a.c
@@ -531,7 +531,7 @@ static void lsi_bad_selection(LSIState *s, uint32_t id)
/* Initiate a SCSI layer data transfer. */
static void lsi_do_dma(LSIState *s, int out)
{
- uint32_t count, id;
+ uint32_t count;
target_phys_addr_t addr;
SCSIDevice *dev;
@@ -542,12 +542,8 @@ static void lsi_do_dma(LSIState *s, int out)
return;
}
- id = (s->current->tag >> 8) & 0xf;
- dev = s->bus.devs[id];
- if (!dev) {
- lsi_bad_selection(s, id);
- return;
- }
+ dev = s->current->req->dev;
+ assert(dev);
count = s->dbc;
if (count > s->current->dma_len)
@@ -771,7 +767,7 @@ static void lsi_do_command(LSIState *s)
s->command_complete = 0;
id = (s->select_tag >> 8) & 0xf;
- dev = s->bus.devs[id];
+ dev = scsi_device_find(&s->bus, id, s->current_lun);
if (!dev) {
lsi_bad_selection(s, id);
return;
@@ -1202,7 +1198,7 @@ again:
}
s->sstat0 |= LSI_SSTAT0_WOA;
s->scntl1 &= ~LSI_SCNTL1_IARB;
- if (id >= LSI_MAX_DEVS || !s->bus.devs[id]) {
+ if (!scsi_device_find(&s->bus, id, 0)) {
lsi_bad_selection(s, id);
break;
}
@@ -1684,13 +1680,9 @@ static void lsi_reg_writeb(LSIState *s, int offset, uint8_t val)
if (val & LSI_SCNTL1_RST) {
if (!(s->sstat0 & LSI_SSTAT0_RST)) {
DeviceState *dev;
- int id;
- for (id = 0; id < LSI_MAX_DEVS; id++) {
- if (s->bus.devs[id]) {
- dev = &s->bus.devs[id]->qdev;
- dev->info->reset(dev);
- }
+ QTAILQ_FOREACH(dev, &s->bus.qbus.children, sibling) {
+ dev->info->reset(dev);
}
s->sstat0 |= LSI_SSTAT0_RST;
lsi_script_scsi_interrupt(s, LSI_SIST0_RST, 0);
diff --git a/hw/qdev.h b/hw/qdev.h
index a7cc48b..36a4198 100644
--- a/hw/qdev.h
+++ b/hw/qdev.h
@@ -73,7 +73,7 @@ struct BusState {
const char *name;
int allow_hotplug;
int qdev_allocated;
- QTAILQ_HEAD(, DeviceState) children;
+ QTAILQ_HEAD(ChildrenHead, DeviceState) children;
QLIST_ENTRY(BusState) sibling;
};
diff --git a/hw/scsi-bus.c b/hw/scsi-bus.c
index d9d4e18..7104e98 100644
--- a/hw/scsi-bus.c
+++ b/hw/scsi-bus.c
@@ -37,12 +37,16 @@ static int scsi_qdev_init(DeviceState *qdev, DeviceInfo *base)
SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev);
SCSIDeviceInfo *info = DO_UPCAST(SCSIDeviceInfo, qdev, base);
SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus);
+ SCSIDevice *olddev;
int rc = -1;
if (dev->id == -1) {
- for (dev->id = 0; dev->id < bus->info->ndev; dev->id++) {
- if (bus->devs[dev->id] == NULL)
+ int id;
+ for (id = 0; id < bus->info->ndev; id++) {
+ if (!scsi_device_find(bus, id, 0)) {
+ dev->id = id;
break;
+ }
}
}
if (dev->id >= bus->info->ndev) {
@@ -50,17 +54,14 @@ static int scsi_qdev_init(DeviceState *qdev, DeviceInfo *base)
goto err;
}
- if (bus->devs[dev->id]) {
- qdev_free(&bus->devs[dev->id]->qdev);
+ olddev = scsi_device_find(bus, dev->id, dev->lun);
+ if (olddev && dev->lun == olddev->lun) {
+ qdev_free(&olddev->qdev);
}
- bus->devs[dev->id] = dev;
dev->info = info;
QTAILQ_INIT(&dev->requests);
rc = dev->info->init(dev);
- if (rc != 0) {
- bus->devs[dev->id] = NULL;
- }
err:
return rc;
@@ -69,13 +70,10 @@ err:
static int scsi_qdev_exit(DeviceState *qdev)
{
SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev);
- SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus);
- assert(bus->devs[dev->id] != NULL);
- if (bus->devs[dev->id]->info->destroy) {
- bus->devs[dev->id]->info->destroy(bus->devs[dev->id]);
+ if (dev->info->destroy) {
+ dev->info->destroy(dev);
}
- bus->devs[dev->id] = NULL;
return 0;
}
@@ -1157,19 +1155,28 @@ void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense)
static char *scsibus_get_fw_dev_path(DeviceState *dev)
{
SCSIDevice *d = DO_UPCAST(SCSIDevice, qdev, dev);
- SCSIBus *bus = scsi_bus_from_device(d);
char path[100];
- int i;
- for (i = 0; i < bus->info->ndev; i++) {
- if (bus->devs[i] == d) {
- break;
- }
- }
+ snprintf(path, sizeof(path), "%s@%d:%d:%d", qdev_fw_name(dev),
+ 0, d->id, d->lun);
- assert(i != bus->info->ndev);
+ return strdup(path);
+}
+
+SCSIDevice *scsi_device_find(SCSIBus *bus, int id, int lun)
+{
+ DeviceState *qdev;
+ SCSIDevice *target_dev = NULL;
- snprintf(path, sizeof(path), "%s@%x", qdev_fw_name(dev), i);
+ QTAILQ_FOREACH_REVERSE(qdev, &bus->qbus.children, ChildrenHead, sibling) {
+ SCSIDevice *dev = DO_UPCAST(SCSIDevice, qdev, qdev);
- return strdup(path);
+ if (dev->id == id) {
+ if (dev->lun == lun) {
+ return dev;
+ }
+ target_dev = dev;
+ }
+ }
+ return target_dev;
}
diff --git a/hw/scsi.h b/hw/scsi.h
index b76c4ee..add3d2d 100644
--- a/hw/scsi.h
+++ b/hw/scsi.h
@@ -110,8 +110,6 @@ struct SCSIBus {
SCSISense unit_attention;
const SCSIBusInfo *info;
-
- SCSIDevice *devs[MAX_SCSI_DEVS];
};
void scsi_bus_new(SCSIBus *bus, DeviceState *host, const SCSIBusInfo *info);
@@ -195,5 +193,6 @@ 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);
#endif
diff --git a/hw/spapr_vscsi.c b/hw/spapr_vscsi.c
index 33ae9b4..ea3bb08 100644
--- a/hw/spapr_vscsi.c
+++ b/hw/spapr_vscsi.c
@@ -129,11 +129,12 @@ 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;
+ int id = (srp_lun >> 56) & 0x7f;
*lun = (srp_lun >> 48) & 0xff;
+ return scsi_device_find(bus, id, *lun);
}
static int vscsi_send_iu(VSCSIState *s, vscsi_req *req,
@@ -582,14 +583,11 @@ 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 {
generated by cgit v1.1 at 2024-12-27 10:16:24 +0000