/* Must not update F field now, should be done later */
static void vtd_record_frcd(IntelIOMMUState *s, uint16_t index,
- uint16_t source_id, hwaddr addr,
- VTDFaultReason fault, bool is_write,
- bool is_pasid, uint32_t pasid)
+ uint64_t hi, uint64_t lo)
{
- uint64_t hi = 0, lo;
hwaddr frcd_reg_addr = DMAR_FRCD_REG_OFFSET + (((uint64_t)index) << 4);
assert(index < DMAR_FRCD_REG_NR);
- lo = VTD_FRCD_FI(addr);
- hi = VTD_FRCD_SID(source_id) | VTD_FRCD_FR(fault) |
- VTD_FRCD_PV(pasid) | VTD_FRCD_PP(is_pasid);
- if (!is_write) {
- hi |= VTD_FRCD_T;
- }
vtd_set_quad_raw(s, frcd_reg_addr, lo);
vtd_set_quad_raw(s, frcd_reg_addr + 8, hi);
}
/* Log and report an DMAR (address translation) fault to software */
-static void vtd_report_dmar_fault(IntelIOMMUState *s, uint16_t source_id,
- hwaddr addr, VTDFaultReason fault,
- bool is_write, bool is_pasid,
- uint32_t pasid)
+static void vtd_report_frcd_fault(IntelIOMMUState *s, uint64_t source_id,
+ uint64_t hi, uint64_t lo)
{
uint32_t fsts_reg = vtd_get_long_raw(s, DMAR_FSTS_REG);
- assert(fault < VTD_FR_MAX);
-
- trace_vtd_dmar_fault(source_id, fault, addr, is_write);
-
if (fsts_reg & VTD_FSTS_PFO) {
error_report_once("New fault is not recorded due to "
"Primary Fault Overflow");
return;
}
- vtd_record_frcd(s, s->next_frcd_reg, source_id, addr, fault,
- is_write, is_pasid, pasid);
+ vtd_record_frcd(s, s->next_frcd_reg, hi, lo);
if (fsts_reg & VTD_FSTS_PPF) {
error_report_once("There are pending faults already, "
}
}
+/* Log and report an DMAR (address translation) fault to software */
+static void vtd_report_dmar_fault(IntelIOMMUState *s, uint16_t source_id,
+ hwaddr addr, VTDFaultReason fault,
+ bool is_write, bool is_pasid,
+ uint32_t pasid)
+{
+ uint64_t hi, lo;
+
+ assert(fault < VTD_FR_MAX);
+
+ trace_vtd_dmar_fault(source_id, fault, addr, is_write);
+
+ lo = VTD_FRCD_FI(addr);
+ hi = VTD_FRCD_SID(source_id) | VTD_FRCD_FR(fault) |
+ VTD_FRCD_PV(pasid) | VTD_FRCD_PP(is_pasid);
+ if (!is_write) {
+ hi |= VTD_FRCD_T;
+ }
+
+ vtd_report_frcd_fault(s, source_id, hi, lo);
+}
+
+
+static void vtd_report_ir_fault(IntelIOMMUState *s, uint64_t source_id,
+ VTDFaultReason fault, uint16_t index)
+{
+ uint64_t hi, lo;
+
+ lo = VTD_FRCD_IR_IDX(index);
+ hi = VTD_FRCD_SID(source_id) | VTD_FRCD_FR(fault);
+
+ vtd_report_frcd_fault(s, source_id, hi, lo);
+}
+
/* Handle Invalidation Queue Errors of queued invalidation interface error
* conditions.
*/
};
/* Read IRTE entry with specific index */
-static int vtd_irte_get(IntelIOMMUState *iommu, uint16_t index,
- VTD_IR_TableEntry *entry, uint16_t sid)
+static bool vtd_irte_get(IntelIOMMUState *iommu, uint16_t index,
+ VTD_IR_TableEntry *entry, uint16_t sid,
+ bool do_fault)
{
static const uint16_t vtd_svt_mask[VTD_SQ_MAX] = \
{0xffff, 0xfffb, 0xfff9, 0xfff8};
if (index >= iommu->intr_size) {
error_report_once("%s: index too large: ind=0x%x",
__func__, index);
- return -VTD_FR_IR_INDEX_OVER;
+ if (do_fault) {
+ vtd_report_ir_fault(iommu, sid, VTD_FR_IR_INDEX_OVER, index);
+ }
+ return false;
}
addr = iommu->intr_root + index * sizeof(*entry);
entry, sizeof(*entry), MEMTXATTRS_UNSPECIFIED)) {
error_report_once("%s: read failed: ind=0x%x addr=0x%" PRIx64,
__func__, index, addr);
- return -VTD_FR_IR_ROOT_INVAL;
+ if (do_fault) {
+ vtd_report_ir_fault(iommu, sid, VTD_FR_IR_ROOT_INVAL, index);
+ }
+ return false;
}
entry->data[0] = le64_to_cpu(entry->data[0]);
trace_vtd_ir_irte_get(index, entry->data[1], entry->data[0]);
+ /*
+ * The remaining potential fault conditions are "qualified" by the
+ * Fault Processing Disable bit in the IRTE. Even "not present".
+ * So just clear the do_fault flag if PFD is set, which will
+ * prevent faults being raised.
+ */
+ if (entry->irte.fault_disable) {
+ do_fault = false;
+ }
+
if (!entry->irte.present) {
error_report_once("%s: detected non-present IRTE "
"(index=%u, high=0x%" PRIx64 ", low=0x%" PRIx64 ")",
__func__, index, entry->data[1], entry->data[0]);
- return -VTD_FR_IR_ENTRY_P;
+ if (do_fault) {
+ vtd_report_ir_fault(iommu, sid, VTD_FR_IR_ENTRY_P, index);
+ }
+ return false;
}
if (entry->irte.__reserved_0 || entry->irte.__reserved_1 ||
error_report_once("%s: detected non-zero reserved IRTE "
"(index=%u, high=0x%" PRIx64 ", low=0x%" PRIx64 ")",
__func__, index, entry->data[1], entry->data[0]);
- return -VTD_FR_IR_IRTE_RSVD;
+ if (do_fault) {
+ vtd_report_ir_fault(iommu, sid, VTD_FR_IR_IRTE_RSVD, index);
+ }
+ return false;
}
if (sid != X86_IOMMU_SID_INVALID) {
error_report_once("%s: invalid IRTE SID "
"(index=%u, sid=%u, source_id=%u)",
__func__, index, sid, source_id);
- return -VTD_FR_IR_SID_ERR;
+ if (do_fault) {
+ vtd_report_ir_fault(iommu, sid, VTD_FR_IR_SID_ERR, index);
+ }
+ return false;
}
break;
error_report_once("%s: invalid SVT_BUS "
"(index=%u, bus=%u, min=%u, max=%u)",
__func__, index, bus, bus_min, bus_max);
- return -VTD_FR_IR_SID_ERR;
+ if (do_fault) {
+ vtd_report_ir_fault(iommu, sid, VTD_FR_IR_SID_ERR, index);
+ }
+ return false;
}
break;
"(index=%u, type=%d)", __func__,
index, entry->irte.sid_vtype);
/* Take this as verification failure. */
- return -VTD_FR_IR_SID_ERR;
+ if (do_fault) {
+ vtd_report_ir_fault(iommu, sid, VTD_FR_IR_SID_ERR, index);
+ }
+ return false;
}
}
- return 0;
+ return true;
}
/* Fetch IRQ information of specific IR index */
-static int vtd_remap_irq_get(IntelIOMMUState *iommu, uint16_t index,
- X86IOMMUIrq *irq, uint16_t sid)
+static bool vtd_remap_irq_get(IntelIOMMUState *iommu, uint16_t index,
+ X86IOMMUIrq *irq, uint16_t sid, bool do_fault)
{
VTD_IR_TableEntry irte = {};
- int ret = 0;
- ret = vtd_irte_get(iommu, index, &irte, sid);
- if (ret) {
- return ret;
+ if (!vtd_irte_get(iommu, index, &irte, sid, do_fault)) {
+ return false;
}
irq->trigger_mode = irte.irte.trigger_mode;
trace_vtd_ir_remap(index, irq->trigger_mode, irq->vector,
irq->delivery_mode, irq->dest, irq->dest_mode);
- return 0;
+ return true;
}
/* Interrupt remapping for MSI/MSI-X entry */
static int vtd_interrupt_remap_msi(IntelIOMMUState *iommu,
MSIMessage *origin,
MSIMessage *translated,
- uint16_t sid)
+ uint16_t sid, bool do_fault)
{
- int ret = 0;
VTD_IR_MSIAddress addr;
uint16_t index;
X86IOMMUIrq irq = {};
if (origin->address & VTD_MSI_ADDR_HI_MASK) {
error_report_once("%s: MSI address high 32 bits non-zero detected: "
"address=0x%" PRIx64, __func__, origin->address);
- return -VTD_FR_IR_REQ_RSVD;
+ if (do_fault) {
+ vtd_report_ir_fault(iommu, sid, VTD_FR_IR_REQ_RSVD, 0);
+ }
+ return -EINVAL;
}
addr.data = origin->address & VTD_MSI_ADDR_LO_MASK;
if (addr.addr.__head != 0xfee) {
error_report_once("%s: MSI address low 32 bit invalid: 0x%" PRIx32,
__func__, addr.data);
- return -VTD_FR_IR_REQ_RSVD;
+ if (do_fault) {
+ vtd_report_ir_fault(iommu, sid, VTD_FR_IR_REQ_RSVD, 0);
+ }
+ return -EINVAL;
}
/* This is compatible mode. */
index += origin->data & VTD_IR_MSI_DATA_SUBHANDLE;
}
- ret = vtd_remap_irq_get(iommu, index, &irq, sid);
- if (ret) {
- return ret;
+ if (!vtd_remap_irq_get(iommu, index, &irq, sid, do_fault)) {
+ return -EINVAL;
}
if (addr.addr.sub_valid) {
"(sid=%u, address=0x%" PRIx64
", data=0x%" PRIx32 ")",
__func__, sid, origin->address, origin->data);
- return -VTD_FR_IR_REQ_RSVD;
+ if (do_fault) {
+ vtd_report_ir_fault(iommu, sid, VTD_FR_IR_REQ_RSVD, 0);
+ }
+ return -EINVAL;
}
} else {
uint8_t vector = origin->data & 0xff;
MSIMessage *dst, uint16_t sid)
{
return vtd_interrupt_remap_msi(INTEL_IOMMU_DEVICE(iommu),
- src, dst, sid);
+ src, dst, sid, false);
}
static MemTxResult vtd_mem_ir_read(void *opaque, hwaddr addr,
sid = attrs.requester_id;
}
- ret = vtd_interrupt_remap_msi(opaque, &from, &to, sid);
+ ret = vtd_interrupt_remap_msi(opaque, &from, &to, sid, true);
if (ret) {
- /* TODO: report error */
/* Drop this interrupt */
return MEMTX_ERROR;
}
projects / mirror_qemu.git / blobdiff