*
*/
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qemu/main-loop.h"
+#include "qemu/module.h"
#include "hw/scsi/scsi.h"
-#include <block/scsi.h>
+#include "migration/vmstate.h"
+#include "scsi/constants.h"
#include "hw/pci/msi.h"
#include "vmw_pvscsi.h"
#include "trace.h"
-#define PVSCSI_MSI_OFFSET (0x50)
#define PVSCSI_USE_64BIT (true)
#define PVSCSI_PER_VECTOR_MASK (false)
#define PVSCSI_MAX_DEVS (64)
#define PVSCSI_MSIX_NUM_VECTORS (1)
+#define PVSCSI_MAX_SG_ELEM 2048
+
#define PVSCSI_MAX_CMD_DATA_WORDS \
(sizeof(PVSCSICmdDescSetupRings)/sizeof(uint32_t))
(stl_le_pci_dma(&container_of(m, PVSCSIState, rings)->parent_obj, \
(m)->rs_pa + offsetof(struct PVSCSIRingsState, field), val))
+typedef struct PVSCSIClass {
+ PCIDeviceClass parent_class;
+ DeviceRealize parent_dc_realize;
+} PVSCSIClass;
+
#define TYPE_PVSCSI "pvscsi"
#define PVSCSI(obj) OBJECT_CHECK(PVSCSIState, (obj), TYPE_PVSCSI)
-/* Compatability flags for migration */
+#define PVSCSI_DEVICE_CLASS(klass) \
+ OBJECT_CLASS_CHECK(PVSCSIClass, (klass), TYPE_PVSCSI)
+#define PVSCSI_DEVICE_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(PVSCSIClass, (obj), TYPE_PVSCSI)
+
+/* Compatibility flags for migration */
#define PVSCSI_COMPAT_OLD_PCI_CONFIGURATION_BIT 0
#define PVSCSI_COMPAT_OLD_PCI_CONFIGURATION \
(1 << PVSCSI_COMPAT_OLD_PCI_CONFIGURATION_BIT)
+#define PVSCSI_COMPAT_DISABLE_PCIE_BIT 1
+#define PVSCSI_COMPAT_DISABLE_PCIE \
+ (1 << PVSCSI_COMPAT_DISABLE_PCIE_BIT)
#define PVSCSI_USE_OLD_PCI_CONFIGURATION(s) \
((s)->compat_flags & PVSCSI_COMPAT_OLD_PCI_CONFIGURATION)
+#define PVSCSI_MSI_OFFSET(s) \
+ (PVSCSI_USE_OLD_PCI_CONFIGURATION(s) ? 0x50 : 0x7c)
+#define PVSCSI_EXP_EP_OFFSET (0x40)
typedef struct PVSCSIRingInfo {
uint64_t rs_pa;
uint8_t msg_ring_info_valid; /* Whether message ring initialized */
uint8_t use_msg; /* Whether to use message ring */
- uint8_t msi_used; /* Whether MSI support was installed successfully */
-
+ uint8_t msi_used; /* For migration compatibility */
PVSCSIRingInfo rings; /* Data transfer rings manager */
uint32_t resetting; /* Reset in progress */
smp_wmb();
}
-static void
+static int
pvscsi_ring_init_msg(PVSCSIRingInfo *m, PVSCSICmdDescSetupMsgRing *ri)
{
int i;
uint32_t len_log2;
uint32_t ring_size;
+ if (!ri->numPages || ri->numPages > PVSCSI_SETUP_MSG_RING_MAX_NUM_PAGES) {
+ return -1;
+ }
ring_size = ri->numPages * PVSCSI_MAX_NUM_MSG_ENTRIES_PER_PAGE;
len_log2 = pvscsi_log2(ring_size - 1);
/* Flush ring state page changes */
smp_wmb();
+
+ return 0;
}
static void
pvscsi_ring_pop_req_descr(PVSCSIRingInfo *mgr)
{
uint32_t ready_ptr = RS_GET_FIELD(mgr, reqProdIdx);
+ uint32_t ring_size = PVSCSI_MAX_NUM_PAGES_REQ_RING
+ * PVSCSI_MAX_NUM_REQ_ENTRIES_PER_PAGE;
- if (ready_ptr != mgr->consumed_ptr) {
+ if (ready_ptr != mgr->consumed_ptr
+ && ready_ptr - mgr->consumed_ptr < ring_size) {
uint32_t next_ready_ptr =
mgr->consumed_ptr++ & mgr->txr_len_mask;
uint32_t next_ready_page =
trace_pvscsi_update_irq_level(should_raise, s->reg_interrupt_enabled,
s->reg_interrupt_status);
- if (s->msi_used && msi_enabled(d)) {
+ if (msi_enabled(d)) {
if (should_raise) {
trace_pvscsi_update_irq_msi();
msi_notify(d, PVSCSI_VECTOR_COMPLETION);
pvscsi_reset_adapter(PVSCSIState *s)
{
s->resetting++;
- qbus_reset_all_fn(&s->bus);
+ qbus_reset_all(BUS(&s->bus));
s->resetting--;
pvscsi_process_completion_queue(s);
assert(QTAILQ_EMPTY(&s->pending_queue));
static void
pvscsi_convert_sglist(PVSCSIRequest *r)
{
- int chunk_size;
+ uint32_t chunk_size, elmcnt = 0;
uint64_t data_length = r->req.dataLen;
PVSCSISGState sg = r->sg;
- while (data_length) {
- while (!sg.resid) {
+ while (data_length && elmcnt < PVSCSI_MAX_SG_ELEM) {
+ while (!sg.resid && elmcnt++ < PVSCSI_MAX_SG_ELEM) {
pvscsi_get_next_sg_elem(&sg);
trace_pvscsi_convert_sglist(r->req.context, r->sg.dataAddr,
r->sg.resid);
}
- assert(data_length > 0);
- chunk_size = MIN((unsigned) data_length, sg.resid);
+ chunk_size = MIN(data_length, sg.resid);
if (chunk_size) {
qemu_sglist_add(&r->sgl, sg.dataAddr, chunk_size);
}
trace_pvscsi_tx_rings_num_pages("Confirm Ring", rc->cmpRingNumPages);
for (i = 0; i < rc->cmpRingNumPages; i++) {
- trace_pvscsi_tx_rings_ppn("Confirm Ring", rc->reqRingPPNs[i]);
+ trace_pvscsi_tx_rings_ppn("Confirm Ring", rc->cmpRingPPNs[i]);
}
}
trace_pvscsi_on_cmd_arrived("PVSCSI_CMD_SETUP_RINGS");
+ if (!rc->reqRingNumPages
+ || rc->reqRingNumPages > PVSCSI_SETUP_RINGS_MAX_NUM_PAGES
+ || !rc->cmpRingNumPages
+ || rc->cmpRingNumPages > PVSCSI_SETUP_RINGS_MAX_NUM_PAGES) {
+ return PVSCSI_COMMAND_PROCESSING_FAILED;
+ }
+
pvscsi_dbg_dump_tx_rings_config(rc);
pvscsi_ring_init_data(&s->rings, rc);
+
s->rings_info_valid = TRUE;
return PVSCSI_COMMAND_PROCESSING_SUCCEEDED;
}
trace_pvscsi_on_cmd_arrived("PVSCSI_CMD_RESET_BUS");
s->resetting++;
- qbus_reset_all_fn(&s->bus);
+ qbus_reset_all(BUS(&s->bus));
s->resetting--;
return PVSCSI_COMMAND_PROCESSING_SUCCEEDED;
}
}
if (s->rings_info_valid) {
- pvscsi_ring_init_msg(&s->rings, rc);
+ if (pvscsi_ring_init_msg(&s->rings, rc) < 0) {
+ return PVSCSI_COMMAND_PROCESSING_FAILED;
+ }
s->msg_ring_info_valid = TRUE;
}
return sizeof(PVSCSICmdDescSetupMsgRing) / sizeof(uint32_t);
}
-static bool
+static void
pvscsi_init_msi(PVSCSIState *s)
{
int res;
PCIDevice *d = PCI_DEVICE(s);
- res = msi_init(d, PVSCSI_MSI_OFFSET, PVSCSI_MSIX_NUM_VECTORS,
- PVSCSI_USE_64BIT, PVSCSI_PER_VECTOR_MASK);
+ res = msi_init(d, PVSCSI_MSI_OFFSET(s), PVSCSI_MSIX_NUM_VECTORS,
+ PVSCSI_USE_64BIT, PVSCSI_PER_VECTOR_MASK, NULL);
if (res < 0) {
trace_pvscsi_init_msi_fail(res);
s->msi_used = false;
} else {
s->msi_used = true;
}
-
- return s->msi_used;
}
static void
{
PCIDevice *d = PCI_DEVICE(s);
- if (s->msi_used) {
- msi_uninit(d);
- }
+ msi_uninit(d);
}
static const MemoryRegionOps pvscsi_ops = {
.cancel = pvscsi_request_cancelled,
};
-static int
-pvscsi_init(PCIDevice *pci_dev)
+static void
+pvscsi_realizefn(PCIDevice *pci_dev, Error **errp)
{
PVSCSIState *s = PVSCSI(pci_dev);
pvscsi_init_msi(s);
- s->completion_worker = qemu_bh_new(pvscsi_process_completion_queue, s);
- if (!s->completion_worker) {
- pvscsi_cleanup_msi(s);
- return -ENOMEM;
+ if (pci_is_express(pci_dev) && pci_bus_is_express(pci_get_bus(pci_dev))) {
+ pcie_endpoint_cap_init(pci_dev, PVSCSI_EXP_EP_OFFSET);
}
+ s->completion_worker = qemu_bh_new(pvscsi_process_completion_queue, s);
+
scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(pci_dev),
&pvscsi_scsi_info, NULL);
/* override default SCSI bus hotplug-handler, with pvscsi's one */
- qbus_set_hotplug_handler(BUS(&s->bus), DEVICE(s), &error_abort);
+ qbus_set_hotplug_handler(BUS(&s->bus), OBJECT(s), &error_abort);
pvscsi_reset_state(s);
-
- return 0;
}
static void
pvscsi_reset_adapter(s);
}
-static void
+static int
pvscsi_pre_save(void *opaque)
{
PVSCSIState *s = (PVSCSIState *) opaque;
assert(QTAILQ_EMPTY(&s->pending_queue));
assert(QTAILQ_EMPTY(&s->completion_queue));
+
+ return 0;
}
static int
return 0;
}
+static bool pvscsi_vmstate_need_pcie_device(void *opaque)
+{
+ PVSCSIState *s = PVSCSI(opaque);
+
+ return !(s->compat_flags & PVSCSI_COMPAT_DISABLE_PCIE);
+}
+
+static bool pvscsi_vmstate_test_pci_device(void *opaque, int version_id)
+{
+ return !pvscsi_vmstate_need_pcie_device(opaque);
+}
+
+static const VMStateDescription vmstate_pvscsi_pcie_device = {
+ .name = "pvscsi/pcie",
+ .needed = pvscsi_vmstate_need_pcie_device,
+ .fields = (VMStateField[]) {
+ VMSTATE_PCI_DEVICE(parent_obj, PVSCSIState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
static const VMStateDescription vmstate_pvscsi = {
.name = "pvscsi",
.version_id = 0,
.pre_save = pvscsi_pre_save,
.post_load = pvscsi_post_load,
.fields = (VMStateField[]) {
- VMSTATE_PCI_DEVICE(parent_obj, PVSCSIState),
+ VMSTATE_STRUCT_TEST(parent_obj, PVSCSIState,
+ pvscsi_vmstate_test_pci_device, 0,
+ vmstate_pci_device, PCIDevice),
VMSTATE_UINT8(msi_used, PVSCSIState),
VMSTATE_UINT32(resetting, PVSCSIState),
VMSTATE_UINT64(reg_interrupt_status, PVSCSIState),
VMSTATE_UINT64(rings.filled_cmp_ptr, PVSCSIState),
VMSTATE_END_OF_LIST()
+ },
+ .subsections = (const VMStateDescription*[]) {
+ &vmstate_pvscsi_pcie_device,
+ NULL
}
};
static Property pvscsi_properties[] = {
DEFINE_PROP_UINT8("use_msg", PVSCSIState, use_msg, 1),
+ DEFINE_PROP_BIT("x-old-pci-configuration", PVSCSIState, compat_flags,
+ PVSCSI_COMPAT_OLD_PCI_CONFIGURATION_BIT, false),
+ DEFINE_PROP_BIT("x-disable-pcie", PVSCSIState, compat_flags,
+ PVSCSI_COMPAT_DISABLE_PCIE_BIT, false),
DEFINE_PROP_END_OF_LIST(),
};
+static void pvscsi_realize(DeviceState *qdev, Error **errp)
+{
+ PVSCSIClass *pvs_c = PVSCSI_DEVICE_GET_CLASS(qdev);
+ PCIDevice *pci_dev = PCI_DEVICE(qdev);
+ PVSCSIState *s = PVSCSI(qdev);
+
+ if (!(s->compat_flags & PVSCSI_COMPAT_DISABLE_PCIE)) {
+ pci_dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
+ }
+
+ pvs_c->parent_dc_realize(qdev, errp);
+}
+
static void pvscsi_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
+ PVSCSIClass *pvs_k = PVSCSI_DEVICE_CLASS(klass);
HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass);
- k->init = pvscsi_init;
+ k->realize = pvscsi_realizefn;
k->exit = pvscsi_uninit;
k->vendor_id = PCI_VENDOR_ID_VMWARE;
k->device_id = PCI_DEVICE_ID_VMWARE_PVSCSI;
k->class_id = PCI_CLASS_STORAGE_SCSI;
k->subsystem_id = 0x1000;
+ device_class_set_parent_realize(dc, pvscsi_realize,
+ &pvs_k->parent_dc_realize);
dc->reset = pvscsi_reset;
dc->vmsd = &vmstate_pvscsi;
dc->props = pvscsi_properties;
static const TypeInfo pvscsi_info = {
.name = TYPE_PVSCSI,
.parent = TYPE_PCI_DEVICE,
+ .class_size = sizeof(PVSCSIClass),
.instance_size = sizeof(PVSCSIState),
.class_init = pvscsi_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_HOTPLUG_HANDLER },
+ { INTERFACE_PCIE_DEVICE },
+ { INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ }
}
};
projects / qemu.git / blobdiff