#include "kvm_i386.h"
#include "trace.h"
+/* context entry operations */
+#define VTD_CE_GET_RID2PASID(ce) \
+ ((ce)->val[1] & VTD_SM_CONTEXT_ENTRY_RID2PASID_MASK)
+#define VTD_CE_GET_PASID_DIR_TABLE(ce) \
+ ((ce)->val[0] & VTD_PASID_DIR_BASE_ADDR_MASK)
+
+/* pe operations */
+#define VTD_PE_GET_TYPE(pe) ((pe)->val[0] & VTD_SM_PASID_ENTRY_PGTT)
+#define VTD_PE_GET_LEVEL(pe) (2 + (((pe)->val[0] >> 2) & VTD_SM_PASID_ENTRY_AW))
+#define VTD_PE_GET_FPD_ERR(ret_fr, is_fpd_set, s, source_id, addr, is_write) {\
+ if (ret_fr) { \
+ ret_fr = -ret_fr; \
+ if (is_fpd_set && vtd_is_qualified_fault(ret_fr)) { \
+ trace_vtd_fault_disabled(); \
+ } else { \
+ vtd_report_dmar_fault(s, source_id, addr, ret_fr, is_write); \
+ } \
+ goto error; \
+ } \
+}
+
static void vtd_address_space_refresh_all(IntelIOMMUState *s);
static void vtd_address_space_unmap(VTDAddressSpace *as, IOMMUNotifier *n);
qemu_mutex_unlock(&s->iommu_lock);
}
+static void vtd_update_scalable_state(IntelIOMMUState *s)
+{
+ uint64_t val = vtd_get_quad_raw(s, DMAR_RTADDR_REG);
+
+ if (s->scalable_mode) {
+ s->root_scalable = val & VTD_RTADDR_SMT;
+ }
+}
+
/* Whether the address space needs to notify new mappings */
static inline gboolean vtd_as_has_map_notifier(VTDAddressSpace *as)
{
}
}
-static inline bool vtd_root_entry_present(VTDRootEntry *root)
+static inline bool vtd_root_entry_present(IntelIOMMUState *s,
+ VTDRootEntry *re,
+ uint8_t devfn)
{
- return root->val & VTD_ROOT_ENTRY_P;
+ if (s->root_scalable && devfn > UINT8_MAX / 2) {
+ return re->hi & VTD_ROOT_ENTRY_P;
+ }
+
+ return re->lo & VTD_ROOT_ENTRY_P;
}
static int vtd_get_root_entry(IntelIOMMUState *s, uint8_t index,
addr = s->root + index * sizeof(*re);
if (dma_memory_read(&address_space_memory, addr, re, sizeof(*re))) {
- re->val = 0;
+ re->lo = 0;
return -VTD_FR_ROOT_TABLE_INV;
}
- re->val = le64_to_cpu(re->val);
+ re->lo = le64_to_cpu(re->lo);
+ re->hi = le64_to_cpu(re->hi);
return 0;
}
return context->lo & VTD_CONTEXT_ENTRY_P;
}
-static int vtd_get_context_entry_from_root(VTDRootEntry *root, uint8_t index,
+static int vtd_get_context_entry_from_root(IntelIOMMUState *s,
+ VTDRootEntry *re,
+ uint8_t index,
VTDContextEntry *ce)
{
- dma_addr_t addr;
+ dma_addr_t addr, ce_size;
/* we have checked that root entry is present */
- addr = (root->val & VTD_ROOT_ENTRY_CTP) + index * sizeof(*ce);
- if (dma_memory_read(&address_space_memory, addr, ce, sizeof(*ce))) {
+ ce_size = s->root_scalable ? VTD_CTX_ENTRY_SCALABLE_SIZE :
+ VTD_CTX_ENTRY_LEGACY_SIZE;
+
+ if (s->root_scalable && index > UINT8_MAX / 2) {
+ index = index & (~VTD_DEVFN_CHECK_MASK);
+ addr = re->hi & VTD_ROOT_ENTRY_CTP;
+ } else {
+ addr = re->lo & VTD_ROOT_ENTRY_CTP;
+ }
+
+ addr = addr + index * ce_size;
+ if (dma_memory_read(&address_space_memory, addr, ce, ce_size)) {
return -VTD_FR_CONTEXT_TABLE_INV;
}
+
ce->lo = le64_to_cpu(ce->lo);
ce->hi = le64_to_cpu(ce->hi);
+ if (ce_size == VTD_CTX_ENTRY_SCALABLE_SIZE) {
+ ce->val[2] = le64_to_cpu(ce->val[2]);
+ ce->val[3] = le64_to_cpu(ce->val[3]);
+ }
return 0;
}
(1ULL << (level - 2 + VTD_CAP_SAGAW_SHIFT));
}
+/* Return true if check passed, otherwise false */
+static inline bool vtd_pe_type_check(X86IOMMUState *x86_iommu,
+ VTDPASIDEntry *pe)
+{
+ switch (VTD_PE_GET_TYPE(pe)) {
+ case VTD_SM_PASID_ENTRY_FLT:
+ case VTD_SM_PASID_ENTRY_SLT:
+ case VTD_SM_PASID_ENTRY_NESTED:
+ break;
+ case VTD_SM_PASID_ENTRY_PT:
+ if (!x86_iommu->pt_supported) {
+ return false;
+ }
+ break;
+ default:
+ /* Unknwon type */
+ return false;
+ }
+ return true;
+}
+
+static int vtd_get_pasid_dire(dma_addr_t pasid_dir_base,
+ uint32_t pasid,
+ VTDPASIDDirEntry *pdire)
+{
+ uint32_t index;
+ dma_addr_t addr, entry_size;
+
+ index = VTD_PASID_DIR_INDEX(pasid);
+ entry_size = VTD_PASID_DIR_ENTRY_SIZE;
+ addr = pasid_dir_base + index * entry_size;
+ if (dma_memory_read(&address_space_memory, addr, pdire, entry_size)) {
+ return -VTD_FR_PASID_TABLE_INV;
+ }
+
+ return 0;
+}
+
+static int vtd_get_pasid_entry(IntelIOMMUState *s,
+ uint32_t pasid,
+ VTDPASIDDirEntry *pdire,
+ VTDPASIDEntry *pe)
+{
+ uint32_t index;
+ dma_addr_t addr, entry_size;
+ X86IOMMUState *x86_iommu = X86_IOMMU_DEVICE(s);
+
+ index = VTD_PASID_TABLE_INDEX(pasid);
+ entry_size = VTD_PASID_ENTRY_SIZE;
+ addr = pdire->val & VTD_PASID_TABLE_BASE_ADDR_MASK;
+ addr = addr + index * entry_size;
+ if (dma_memory_read(&address_space_memory, addr, pe, entry_size)) {
+ return -VTD_FR_PASID_TABLE_INV;
+ }
+
+ /* Do translation type check */
+ if (!vtd_pe_type_check(x86_iommu, pe)) {
+ return -VTD_FR_PASID_TABLE_INV;
+ }
+
+ if (!vtd_is_level_supported(s, VTD_PE_GET_LEVEL(pe))) {
+ return -VTD_FR_PASID_TABLE_INV;
+ }
+
+ return 0;
+}
+
+static int vtd_get_pasid_entry_from_pasid(IntelIOMMUState *s,
+ dma_addr_t pasid_dir_base,
+ uint32_t pasid,
+ VTDPASIDEntry *pe)
+{
+ int ret;
+ VTDPASIDDirEntry pdire;
+
+ ret = vtd_get_pasid_dire(pasid_dir_base, pasid, &pdire);
+ if (ret) {
+ return ret;
+ }
+
+ ret = vtd_get_pasid_entry(s, pasid, &pdire, pe);
+ if (ret) {
+ return ret;
+ }
+
+ return ret;
+}
+
+static int vtd_ce_get_rid2pasid_entry(IntelIOMMUState *s,
+ VTDContextEntry *ce,
+ VTDPASIDEntry *pe)
+{
+ uint32_t pasid;
+ dma_addr_t pasid_dir_base;
+ int ret = 0;
+
+ pasid = VTD_CE_GET_RID2PASID(ce);
+ pasid_dir_base = VTD_CE_GET_PASID_DIR_TABLE(ce);
+ ret = vtd_get_pasid_entry_from_pasid(s, pasid_dir_base, pasid, pe);
+
+ return ret;
+}
+
+static int vtd_ce_get_pasid_fpd(IntelIOMMUState *s,
+ VTDContextEntry *ce,
+ bool *pe_fpd_set)
+{
+ int ret;
+ uint32_t pasid;
+ dma_addr_t pasid_dir_base;
+ VTDPASIDDirEntry pdire;
+ VTDPASIDEntry pe;
+
+ pasid = VTD_CE_GET_RID2PASID(ce);
+ pasid_dir_base = VTD_CE_GET_PASID_DIR_TABLE(ce);
+
+ ret = vtd_get_pasid_dire(pasid_dir_base, pasid, &pdire);
+ if (ret) {
+ return ret;
+ }
+
+ if (pdire.val & VTD_PASID_DIR_FPD) {
+ *pe_fpd_set = true;
+ return 0;
+ }
+
+ ret = vtd_get_pasid_entry(s, pasid, &pdire, &pe);
+ if (ret) {
+ return ret;
+ }
+
+ if (pe.val[0] & VTD_PASID_ENTRY_FPD) {
+ *pe_fpd_set = true;
+ }
+
+ return 0;
+}
+
/* Get the page-table level that hardware should use for the second-level
* page-table walk from the Address Width field of context-entry.
*/
return 2 + (ce->hi & VTD_CONTEXT_ENTRY_AW);
}
+static uint32_t vtd_get_iova_level(IntelIOMMUState *s,
+ VTDContextEntry *ce)
+{
+ VTDPASIDEntry pe;
+
+ if (s->root_scalable) {
+ vtd_ce_get_rid2pasid_entry(s, ce, &pe);
+ return VTD_PE_GET_LEVEL(&pe);
+ }
+
+ return vtd_ce_get_level(ce);
+}
+
static inline uint32_t vtd_ce_get_agaw(VTDContextEntry *ce)
{
return 30 + (ce->hi & VTD_CONTEXT_ENTRY_AW) * 9;
}
+static uint32_t vtd_get_iova_agaw(IntelIOMMUState *s,
+ VTDContextEntry *ce)
+{
+ VTDPASIDEntry pe;
+
+ if (s->root_scalable) {
+ vtd_ce_get_rid2pasid_entry(s, ce, &pe);
+ return 30 + ((pe.val[0] >> 2) & VTD_SM_PASID_ENTRY_AW) * 9;
+ }
+
+ return vtd_ce_get_agaw(ce);
+}
+
static inline uint32_t vtd_ce_get_type(VTDContextEntry *ce)
{
return ce->lo & VTD_CONTEXT_ENTRY_TT;
}
-/* Return true if check passed, otherwise false */
+/* Only for Legacy Mode. Return true if check passed, otherwise false */
static inline bool vtd_ce_type_check(X86IOMMUState *x86_iommu,
VTDContextEntry *ce)
{
}
break;
default:
- /* Unknwon type */
+ /* Unknown type */
error_report_once("%s: unknown ce type: %"PRIu32, __func__,
vtd_ce_get_type(ce));
return false;
return true;
}
-static inline uint64_t vtd_iova_limit(VTDContextEntry *ce, uint8_t aw)
+static inline uint64_t vtd_iova_limit(IntelIOMMUState *s,
+ VTDContextEntry *ce, uint8_t aw)
{
- uint32_t ce_agaw = vtd_ce_get_agaw(ce);
+ uint32_t ce_agaw = vtd_get_iova_agaw(s, ce);
return 1ULL << MIN(ce_agaw, aw);
}
/* Return true if IOVA passes range check, otherwise false. */
-static inline bool vtd_iova_range_check(uint64_t iova, VTDContextEntry *ce,
+static inline bool vtd_iova_range_check(IntelIOMMUState *s,
+ uint64_t iova, VTDContextEntry *ce,
uint8_t aw)
{
/*
* Check if @iova is above 2^X-1, where X is the minimum of MGAW
* in CAP_REG and AW in context-entry.
*/
- return !(iova & ~(vtd_iova_limit(ce, aw) - 1));
+ return !(iova & ~(vtd_iova_limit(s, ce, aw) - 1));
+}
+
+static dma_addr_t vtd_get_iova_pgtbl_base(IntelIOMMUState *s,
+ VTDContextEntry *ce)
+{
+ VTDPASIDEntry pe;
+
+ if (s->root_scalable) {
+ vtd_ce_get_rid2pasid_entry(s, ce, &pe);
+ return pe.val[0] & VTD_SM_PASID_ENTRY_SLPTPTR;
+ }
+
+ return vtd_ce_get_slpt_base(ce);
}
/*
/* Given the @iova, get relevant @slptep. @slpte_level will be the last level
* of the translation, can be used for deciding the size of large page.
*/
-static int vtd_iova_to_slpte(VTDContextEntry *ce, uint64_t iova, bool is_write,
+static int vtd_iova_to_slpte(IntelIOMMUState *s, VTDContextEntry *ce,
+ uint64_t iova, bool is_write,
uint64_t *slptep, uint32_t *slpte_level,
bool *reads, bool *writes, uint8_t aw_bits)
{
- dma_addr_t addr = vtd_ce_get_slpt_base(ce);
- uint32_t level = vtd_ce_get_level(ce);
+ dma_addr_t addr = vtd_get_iova_pgtbl_base(s, ce);
+ uint32_t level = vtd_get_iova_level(s, ce);
uint32_t offset;
uint64_t slpte;
uint64_t access_right_check;
- if (!vtd_iova_range_check(iova, ce, aw_bits)) {
+ if (!vtd_iova_range_check(s, iova, ce, aw_bits)) {
error_report_once("%s: detected IOVA overflow (iova=0x%" PRIx64 ")",
__func__, iova);
return -VTD_FR_ADDR_BEYOND_MGAW;
if (slpte == (uint64_t)-1) {
error_report_once("%s: detected read error on DMAR slpte "
"(iova=0x%" PRIx64 ")", __func__, iova);
- if (level == vtd_ce_get_level(ce)) {
+ if (level == vtd_get_iova_level(s, ce)) {
/* Invalid programming of context-entry */
return -VTD_FR_CONTEXT_ENTRY_INV;
} else {
/**
* vtd_page_walk - walk specific IOVA range, and call the hook
*
+ * @s: intel iommu state
* @ce: context entry to walk upon
* @start: IOVA address to start the walk
* @end: IOVA range end address (start <= addr < end)
* @info: page walking information struct
*/
-static int vtd_page_walk(VTDContextEntry *ce, uint64_t start, uint64_t end,
+static int vtd_page_walk(IntelIOMMUState *s, VTDContextEntry *ce,
+ uint64_t start, uint64_t end,
vtd_page_walk_info *info)
{
- dma_addr_t addr = vtd_ce_get_slpt_base(ce);
- uint32_t level = vtd_ce_get_level(ce);
+ dma_addr_t addr = vtd_get_iova_pgtbl_base(s, ce);
+ uint32_t level = vtd_get_iova_level(s, ce);
- if (!vtd_iova_range_check(start, ce, info->aw)) {
+ if (!vtd_iova_range_check(s, start, ce, info->aw)) {
return -VTD_FR_ADDR_BEYOND_MGAW;
}
- if (!vtd_iova_range_check(end, ce, info->aw)) {
+ if (!vtd_iova_range_check(s, end, ce, info->aw)) {
/* Fix end so that it reaches the maximum */
- end = vtd_iova_limit(ce, info->aw);
+ end = vtd_iova_limit(s, ce, info->aw);
}
return vtd_page_walk_level(addr, start, end, level, true, true, info);
}
+static int vtd_root_entry_rsvd_bits_check(IntelIOMMUState *s,
+ VTDRootEntry *re)
+{
+ /* Legacy Mode reserved bits check */
+ if (!s->root_scalable &&
+ (re->hi || (re->lo & VTD_ROOT_ENTRY_RSVD(s->aw_bits))))
+ goto rsvd_err;
+
+ /* Scalable Mode reserved bits check */
+ if (s->root_scalable &&
+ ((re->lo & VTD_ROOT_ENTRY_RSVD(s->aw_bits)) ||
+ (re->hi & VTD_ROOT_ENTRY_RSVD(s->aw_bits))))
+ goto rsvd_err;
+
+ return 0;
+
+rsvd_err:
+ error_report_once("%s: invalid root entry: hi=0x%"PRIx64
+ ", lo=0x%"PRIx64,
+ __func__, re->hi, re->lo);
+ return -VTD_FR_ROOT_ENTRY_RSVD;
+}
+
+static inline int vtd_context_entry_rsvd_bits_check(IntelIOMMUState *s,
+ VTDContextEntry *ce)
+{
+ if (!s->root_scalable &&
+ (ce->hi & VTD_CONTEXT_ENTRY_RSVD_HI ||
+ ce->lo & VTD_CONTEXT_ENTRY_RSVD_LO(s->aw_bits))) {
+ error_report_once("%s: invalid context entry: hi=%"PRIx64
+ ", lo=%"PRIx64" (reserved nonzero)",
+ __func__, ce->hi, ce->lo);
+ return -VTD_FR_CONTEXT_ENTRY_RSVD;
+ }
+
+ if (s->root_scalable &&
+ (ce->val[0] & VTD_SM_CONTEXT_ENTRY_RSVD_VAL0(s->aw_bits) ||
+ ce->val[1] & VTD_SM_CONTEXT_ENTRY_RSVD_VAL1 ||
+ ce->val[2] ||
+ ce->val[3])) {
+ error_report_once("%s: invalid context entry: val[3]=%"PRIx64
+ ", val[2]=%"PRIx64
+ ", val[1]=%"PRIx64
+ ", val[0]=%"PRIx64" (reserved nonzero)",
+ __func__, ce->val[3], ce->val[2],
+ ce->val[1], ce->val[0]);
+ return -VTD_FR_CONTEXT_ENTRY_RSVD;
+ }
+
+ return 0;
+}
+
+static int vtd_ce_rid2pasid_check(IntelIOMMUState *s,
+ VTDContextEntry *ce)
+{
+ VTDPASIDEntry pe;
+
+ /*
+ * Make sure in Scalable Mode, a present context entry
+ * has valid rid2pasid setting, which includes valid
+ * rid2pasid field and corresponding pasid entry setting
+ */
+ return vtd_ce_get_rid2pasid_entry(s, ce, &pe);
+}
+
/* Map a device to its corresponding domain (context-entry) */
static int vtd_dev_to_context_entry(IntelIOMMUState *s, uint8_t bus_num,
uint8_t devfn, VTDContextEntry *ce)
return ret_fr;
}
- if (!vtd_root_entry_present(&re)) {
+ if (!vtd_root_entry_present(s, &re, devfn)) {
/* Not error - it's okay we don't have root entry. */
trace_vtd_re_not_present(bus_num);
return -VTD_FR_ROOT_ENTRY_P;
}
- if (re.rsvd || (re.val & VTD_ROOT_ENTRY_RSVD(s->aw_bits))) {
- error_report_once("%s: invalid root entry: rsvd=0x%"PRIx64
- ", val=0x%"PRIx64" (reserved nonzero)",
- __func__, re.rsvd, re.val);
- return -VTD_FR_ROOT_ENTRY_RSVD;
+ ret_fr = vtd_root_entry_rsvd_bits_check(s, &re);
+ if (ret_fr) {
+ return ret_fr;
}
- ret_fr = vtd_get_context_entry_from_root(&re, devfn, ce);
+ ret_fr = vtd_get_context_entry_from_root(s, &re, devfn, ce);
if (ret_fr) {
return ret_fr;
}
return -VTD_FR_CONTEXT_ENTRY_P;
}
- if ((ce->hi & VTD_CONTEXT_ENTRY_RSVD_HI) ||
- (ce->lo & VTD_CONTEXT_ENTRY_RSVD_LO(s->aw_bits))) {
- error_report_once("%s: invalid context entry: hi=%"PRIx64
- ", lo=%"PRIx64" (reserved nonzero)",
- __func__, ce->hi, ce->lo);
- return -VTD_FR_CONTEXT_ENTRY_RSVD;
+ ret_fr = vtd_context_entry_rsvd_bits_check(s, ce);
+ if (ret_fr) {
+ return ret_fr;
}
/* Check if the programming of context-entry is valid */
- if (!vtd_is_level_supported(s, vtd_ce_get_level(ce))) {
+ if (!s->root_scalable &&
+ !vtd_is_level_supported(s, vtd_ce_get_level(ce))) {
error_report_once("%s: invalid context entry: hi=%"PRIx64
", lo=%"PRIx64" (level %d not supported)",
- __func__, ce->hi, ce->lo, vtd_ce_get_level(ce));
+ __func__, ce->hi, ce->lo,
+ vtd_ce_get_level(ce));
return -VTD_FR_CONTEXT_ENTRY_INV;
}
- /* Do translation type check */
- if (!vtd_ce_type_check(x86_iommu, ce)) {
- /* Errors dumped in vtd_ce_type_check() */
- return -VTD_FR_CONTEXT_ENTRY_INV;
+ if (!s->root_scalable) {
+ /* Do translation type check */
+ if (!vtd_ce_type_check(x86_iommu, ce)) {
+ /* Errors dumped in vtd_ce_type_check() */
+ return -VTD_FR_CONTEXT_ENTRY_INV;
+ }
+ } else {
+ /*
+ * Check if the programming of context-entry.rid2pasid
+ * and corresponding pasid setting is valid, and thus
+ * avoids to check pasid entry fetching result in future
+ * helper function calling.
+ */
+ ret_fr = vtd_ce_rid2pasid_check(s, ce);
+ if (ret_fr) {
+ return ret_fr;
+ }
}
return 0;
return 0;
}
+static uint16_t vtd_get_domain_id(IntelIOMMUState *s,
+ VTDContextEntry *ce)
+{
+ VTDPASIDEntry pe;
+
+ if (s->root_scalable) {
+ vtd_ce_get_rid2pasid_entry(s, ce, &pe);
+ return VTD_SM_PASID_ENTRY_DID(pe.val[1]);
+ }
+
+ return VTD_CONTEXT_ENTRY_DID(ce->hi);
+}
+
static int vtd_sync_shadow_page_table_range(VTDAddressSpace *vtd_as,
VTDContextEntry *ce,
hwaddr addr, hwaddr size)
.notify_unmap = true,
.aw = s->aw_bits,
.as = vtd_as,
- .domain_id = VTD_CONTEXT_ENTRY_DID(ce->hi),
+ .domain_id = vtd_get_domain_id(s, ce),
};
- return vtd_page_walk(ce, addr, addr + size, &info);
+ return vtd_page_walk(s, ce, addr, addr + size, &info);
}
static int vtd_sync_shadow_page_table(VTDAddressSpace *vtd_as)
}
/*
- * Fetch translation type for specific device. Returns <0 if error
- * happens, otherwise return the shifted type to check against
- * VTD_CONTEXT_TT_*.
+ * Check if specific device is configed to bypass address
+ * translation for DMA requests. In Scalable Mode, bypass
+ * 1st-level translation or 2nd-level translation, it depends
+ * on PGTT setting.
*/
-static int vtd_dev_get_trans_type(VTDAddressSpace *as)
+static bool vtd_dev_pt_enabled(VTDAddressSpace *as)
{
IntelIOMMUState *s;
VTDContextEntry ce;
+ VTDPASIDEntry pe;
int ret;
- s = as->iommu_state;
+ assert(as);
+ s = as->iommu_state;
ret = vtd_dev_to_context_entry(s, pci_bus_num(as->bus),
as->devfn, &ce);
if (ret) {
- return ret;
- }
-
- return vtd_ce_get_type(&ce);
-}
-
-static bool vtd_dev_pt_enabled(VTDAddressSpace *as)
-{
- int ret;
-
- assert(as);
-
- ret = vtd_dev_get_trans_type(as);
- if (ret < 0) {
/*
* Possibly failed to parse the context entry for some reason
* (e.g., during init, or any guest configuration errors on
return false;
}
- return ret == VTD_CONTEXT_TT_PASS_THROUGH;
+ if (s->root_scalable) {
+ ret = vtd_ce_get_rid2pasid_entry(s, &ce, &pe);
+ if (ret) {
+ error_report_once("%s: vtd_ce_get_rid2pasid_entry error: %"PRId32,
+ __func__, ret);
+ return false;
+ }
+ return (VTD_PE_GET_TYPE(&pe) == VTD_SM_PASID_ENTRY_PT);
+ }
+
+ return (vtd_ce_get_type(&ce) == VTD_CONTEXT_TT_PASS_THROUGH);
}
/* Return whether the device is using IOMMU translation. */
/* Turn off first then on the other */
if (use_iommu) {
- memory_region_set_enabled(&as->sys_alias, false);
+ memory_region_set_enabled(&as->nodmar, false);
memory_region_set_enabled(MEMORY_REGION(&as->iommu), true);
} else {
memory_region_set_enabled(MEMORY_REGION(&as->iommu), false);
- memory_region_set_enabled(&as->sys_alias, true);
+ memory_region_set_enabled(&as->nodmar, true);
}
if (take_bql) {
[VTD_FR_ROOT_ENTRY_RSVD] = false,
[VTD_FR_PAGING_ENTRY_RSVD] = true,
[VTD_FR_CONTEXT_ENTRY_TT] = true,
+ [VTD_FR_PASID_TABLE_INV] = false,
[VTD_FR_RESERVED_ERR] = false,
[VTD_FR_MAX] = false,
};
cc_entry->context_cache_gen);
ce = cc_entry->context_entry;
is_fpd_set = ce.lo & VTD_CONTEXT_ENTRY_FPD;
+ if (!is_fpd_set && s->root_scalable) {
+ ret_fr = vtd_ce_get_pasid_fpd(s, &ce, &is_fpd_set);
+ VTD_PE_GET_FPD_ERR(ret_fr, is_fpd_set, s, source_id, addr, is_write);
+ }
} else {
ret_fr = vtd_dev_to_context_entry(s, bus_num, devfn, &ce);
is_fpd_set = ce.lo & VTD_CONTEXT_ENTRY_FPD;
- if (ret_fr) {
- ret_fr = -ret_fr;
- if (is_fpd_set && vtd_is_qualified_fault(ret_fr)) {
- trace_vtd_fault_disabled();
- } else {
- vtd_report_dmar_fault(s, source_id, addr, ret_fr, is_write);
- }
- goto error;
+ if (!ret_fr && !is_fpd_set && s->root_scalable) {
+ ret_fr = vtd_ce_get_pasid_fpd(s, &ce, &is_fpd_set);
}
+ VTD_PE_GET_FPD_ERR(ret_fr, is_fpd_set, s, source_id, addr, is_write);
/* Update context-cache */
trace_vtd_iotlb_cc_update(bus_num, devfn, ce.hi, ce.lo,
cc_entry->context_cache_gen,
return true;
}
- ret_fr = vtd_iova_to_slpte(&ce, addr, is_write, &slpte, &level,
+ ret_fr = vtd_iova_to_slpte(s, &ce, addr, is_write, &slpte, &level,
&reads, &writes, s->aw_bits);
- if (ret_fr) {
- ret_fr = -ret_fr;
- if (is_fpd_set && vtd_is_qualified_fault(ret_fr)) {
- trace_vtd_fault_disabled();
- } else {
- vtd_report_dmar_fault(s, source_id, addr, ret_fr, is_write);
- }
- goto error;
- }
+ VTD_PE_GET_FPD_ERR(ret_fr, is_fpd_set, s, source_id, addr, is_write);
page_mask = vtd_slpt_level_page_mask(level);
access_flags = IOMMU_ACCESS_FLAG(reads, writes);
- vtd_update_iotlb(s, source_id, VTD_CONTEXT_ENTRY_DID(ce.hi), addr, slpte,
+ vtd_update_iotlb(s, source_id, vtd_get_domain_id(s, &ce), addr, slpte,
access_flags, level);
out:
vtd_iommu_unlock(s);
s->root_extended = s->root & VTD_RTADDR_RTT;
s->root &= VTD_RTADDR_ADDR_MASK(s->aw_bits);
+ vtd_update_scalable_state(s);
+
trace_vtd_reg_dmar_root(s->root, s->root_extended);
}
QLIST_FOREACH(vtd_as, &s->vtd_as_with_notifiers, next) {
if (!vtd_dev_to_context_entry(s, pci_bus_num(vtd_as->bus),
vtd_as->devfn, &ce) &&
- domain_id == VTD_CONTEXT_ENTRY_DID(ce.hi)) {
+ domain_id == vtd_get_domain_id(s, &ce)) {
vtd_sync_shadow_page_table(vtd_as);
}
}
QLIST_FOREACH(vtd_as, &(s->vtd_as_with_notifiers), next) {
ret = vtd_dev_to_context_entry(s, pci_bus_num(vtd_as->bus),
vtd_as->devfn, &ce);
- if (!ret && domain_id == VTD_CONTEXT_ENTRY_DID(ce.hi)) {
+ if (!ret && domain_id == vtd_get_domain_id(s, &ce)) {
if (vtd_as_has_map_notifier(vtd_as)) {
/*
* As long as we have MAP notifications registered in
if (en) {
s->iq = iqa_val & VTD_IQA_IQA_MASK(s->aw_bits);
/* 2^(x+8) entries */
- s->iq_size = 1UL << ((iqa_val & VTD_IQA_QS) + 8);
+ s->iq_size = 1UL << ((iqa_val & VTD_IQA_QS) + 8 - (s->iq_dw ? 1 : 0));
s->qi_enabled = true;
trace_vtd_inv_qi_setup(s->iq, s->iq_size);
/* Ok - report back to driver */
}
/* Fetch an Invalidation Descriptor from the Invalidation Queue */
-static bool vtd_get_inv_desc(dma_addr_t base_addr, uint32_t offset,
+static bool vtd_get_inv_desc(IntelIOMMUState *s,
VTDInvDesc *inv_desc)
{
- dma_addr_t addr = base_addr + offset * sizeof(*inv_desc);
- if (dma_memory_read(&address_space_memory, addr, inv_desc,
- sizeof(*inv_desc))) {
- error_report_once("Read INV DESC failed");
- inv_desc->lo = 0;
- inv_desc->hi = 0;
+ dma_addr_t base_addr = s->iq;
+ uint32_t offset = s->iq_head;
+ uint32_t dw = s->iq_dw ? 32 : 16;
+ dma_addr_t addr = base_addr + offset * dw;
+
+ if (dma_memory_read(&address_space_memory, addr, inv_desc, dw)) {
+ error_report_once("Read INV DESC failed.");
return false;
}
inv_desc->lo = le64_to_cpu(inv_desc->lo);
inv_desc->hi = le64_to_cpu(inv_desc->hi);
+ if (dw == 32) {
+ inv_desc->val[2] = le64_to_cpu(inv_desc->val[2]);
+ inv_desc->val[3] = le64_to_cpu(inv_desc->val[3]);
+ }
return true;
}
uint8_t desc_type;
trace_vtd_inv_qi_head(s->iq_head);
- if (!vtd_get_inv_desc(s->iq, s->iq_head, &inv_desc)) {
+ if (!vtd_get_inv_desc(s, &inv_desc)) {
s->iq_last_desc_type = VTD_INV_DESC_NONE;
return false;
}
+
desc_type = inv_desc.lo & VTD_INV_DESC_TYPE;
/* FIXME: should update at first or at last? */
s->iq_last_desc_type = desc_type;
}
break;
+ /*
+ * TODO: the entity of below two cases will be implemented in future series.
+ * To make guest (which integrates scalable mode support patch set in
+ * iommu driver) work, just return true is enough so far.
+ */
+ case VTD_INV_DESC_PC:
+ break;
+
+ case VTD_INV_DESC_PIOTLB:
+ break;
+
case VTD_INV_DESC_WAIT:
trace_vtd_inv_desc("wait", inv_desc.hi, inv_desc.lo);
if (!vtd_process_wait_desc(s, &inv_desc)) {
{
uint64_t val = vtd_get_quad_raw(s, DMAR_IQT_REG);
- s->iq_tail = VTD_IQT_QT(val);
+ if (s->iq_dw && (val & VTD_IQT_QT_256_RSV_BIT)) {
+ error_report_once("%s: RSV bit is set: val=0x%"PRIx64,
+ __func__, val);
+ return;
+ }
+ s->iq_tail = VTD_IQT_QT(s->iq_dw, val);
trace_vtd_inv_qi_tail(s->iq_tail);
if (s->qi_enabled && !(vtd_get_long_raw(s, DMAR_FSTS_REG) & VTD_FSTS_IQE)) {
} else {
vtd_set_quad(s, addr, val);
}
+ if (s->ecap & VTD_ECAP_SMTS &&
+ val & VTD_IQA_DW_MASK) {
+ s->iq_dw = true;
+ } else {
+ s->iq_dw = false;
+ }
break;
case DMAR_IQA_REG_HI:
IntelIOMMUState *s = vtd_as->iommu_state;
if (!s->caching_mode && new & IOMMU_NOTIFIER_MAP) {
- error_report("We need to set caching-mode=1 for intel-iommu to enable "
+ error_report("We need to set caching-mode=on for intel-iommu to enable "
"device assignment with IOMMU protection.");
exit(1);
}
*/
vtd_switch_address_space_all(iommu);
+ /*
+ * We don't need to migrate the root_scalable because we can
+ * simply do the calculation after the loading is complete. We
+ * can actually do similar things with root, dmar_enabled, etc.
+ * however since we've had them already so we'd better keep them
+ * for compatibility of migration.
+ */
+ vtd_update_scalable_state(iommu);
+
return 0;
}
DEFINE_PROP_UINT8("aw-bits", IntelIOMMUState, aw_bits,
VTD_HOST_ADDRESS_WIDTH),
DEFINE_PROP_BOOL("caching-mode", IntelIOMMUState, caching_mode, FALSE),
+ DEFINE_PROP_BOOL("x-scalable-mode", IntelIOMMUState, scalable_mode, FALSE),
DEFINE_PROP_BOOL("dma-drain", IntelIOMMUState, dma_drain, true),
DEFINE_PROP_END_OF_LIST(),
};
vtd_dev_as = vtd_bus->dev_as[devfn];
if (!vtd_dev_as) {
- snprintf(name, sizeof(name), "intel_iommu_devfn_%d", devfn);
+ snprintf(name, sizeof(name), "vtd-%02x.%x", PCI_SLOT(devfn),
+ PCI_FUNC(devfn));
vtd_bus->dev_as[devfn] = vtd_dev_as = g_malloc0(sizeof(VTDAddressSpace));
vtd_dev_as->bus = bus;
vtd_dev_as->context_cache_entry.context_cache_gen = 0;
vtd_dev_as->iova_tree = iova_tree_new();
+ memory_region_init(&vtd_dev_as->root, OBJECT(s), name, UINT64_MAX);
+ address_space_init(&vtd_dev_as->as, &vtd_dev_as->root, "vtd-root");
+
/*
- * Memory region relationships looks like (Address range shows
- * only lower 32 bits to make it short in length...):
- *
- * |-----------------+-------------------+----------|
- * | Name | Address range | Priority |
- * |-----------------+-------------------+----------+
- * | vtd_root | 00000000-ffffffff | 0 |
- * | intel_iommu | 00000000-ffffffff | 1 |
- * | vtd_sys_alias | 00000000-ffffffff | 1 |
- * | intel_iommu_ir | fee00000-feefffff | 64 |
- * |-----------------+-------------------+----------|
+ * Build the DMAR-disabled container with aliases to the
+ * shared MRs. Note that aliasing to a shared memory region
+ * could help the memory API to detect same FlatViews so we
+ * can have devices to share the same FlatView when DMAR is
+ * disabled (either by not providing "intel_iommu=on" or with
+ * "iommu=pt"). It will greatly reduce the total number of
+ * FlatViews of the system hence VM runs faster.
+ */
+ memory_region_init_alias(&vtd_dev_as->nodmar, OBJECT(s),
+ "vtd-nodmar", &s->mr_nodmar, 0,
+ memory_region_size(&s->mr_nodmar));
+
+ /*
+ * Build the per-device DMAR-enabled container.
*
- * We enable/disable DMAR by switching enablement for
- * vtd_sys_alias and intel_iommu regions. IR region is always
- * enabled.
+ * TODO: currently we have per-device IOMMU memory region only
+ * because we have per-device IOMMU notifiers for devices. If
+ * one day we can abstract the IOMMU notifiers out of the
+ * memory regions then we can also share the same memory
+ * region here just like what we've done above with the nodmar
+ * region.
*/
+ strcat(name, "-dmar");
memory_region_init_iommu(&vtd_dev_as->iommu, sizeof(vtd_dev_as->iommu),
TYPE_INTEL_IOMMU_MEMORY_REGION, OBJECT(s),
- "intel_iommu_dmar",
- UINT64_MAX);
- memory_region_init_alias(&vtd_dev_as->sys_alias, OBJECT(s),
- "vtd_sys_alias", get_system_memory(),
- 0, memory_region_size(get_system_memory()));
- memory_region_init_io(&vtd_dev_as->iommu_ir, OBJECT(s),
- &vtd_mem_ir_ops, s, "intel_iommu_ir",
- VTD_INTERRUPT_ADDR_SIZE);
- memory_region_init(&vtd_dev_as->root, OBJECT(s),
- "vtd_root", UINT64_MAX);
- memory_region_add_subregion_overlap(&vtd_dev_as->root,
+ name, UINT64_MAX);
+ memory_region_init_alias(&vtd_dev_as->iommu_ir, OBJECT(s), "vtd-ir",
+ &s->mr_ir, 0, memory_region_size(&s->mr_ir));
+ memory_region_add_subregion_overlap(MEMORY_REGION(&vtd_dev_as->iommu),
VTD_INTERRUPT_ADDR_FIRST,
- &vtd_dev_as->iommu_ir, 64);
- address_space_init(&vtd_dev_as->as, &vtd_dev_as->root, name);
- memory_region_add_subregion_overlap(&vtd_dev_as->root, 0,
- &vtd_dev_as->sys_alias, 1);
+ &vtd_dev_as->iommu_ir, 1);
+
+ /*
+ * Hook both the containers under the root container, we
+ * switch between DMAR & noDMAR by enable/disable
+ * corresponding sub-containers
+ */
memory_region_add_subregion_overlap(&vtd_dev_as->root, 0,
MEMORY_REGION(&vtd_dev_as->iommu),
- 1);
+ 0);
+ memory_region_add_subregion_overlap(&vtd_dev_as->root, 0,
+ &vtd_dev_as->nodmar, 0);
+
vtd_switch_address_space(vtd_dev_as);
}
return vtd_dev_as;
vtd_address_space_unmap(vtd_as, n);
if (vtd_dev_to_context_entry(s, bus_n, vtd_as->devfn, &ce) == 0) {
- trace_vtd_replay_ce_valid(bus_n, PCI_SLOT(vtd_as->devfn),
+ trace_vtd_replay_ce_valid(s->root_scalable ? "scalable mode" :
+ "legacy mode",
+ bus_n, PCI_SLOT(vtd_as->devfn),
PCI_FUNC(vtd_as->devfn),
- VTD_CONTEXT_ENTRY_DID(ce.hi),
+ vtd_get_domain_id(s, &ce),
ce.hi, ce.lo);
if (vtd_as_has_map_notifier(vtd_as)) {
/* This is required only for MAP typed notifiers */
.notify_unmap = false,
.aw = s->aw_bits,
.as = vtd_as,
- .domain_id = VTD_CONTEXT_ENTRY_DID(ce.hi),
+ .domain_id = vtd_get_domain_id(s, &ce),
};
- vtd_page_walk(&ce, 0, ~0ULL, &info);
+ vtd_page_walk(s, &ce, 0, ~0ULL, &info);
}
} else {
trace_vtd_replay_ce_invalid(bus_n, PCI_SLOT(vtd_as->devfn),
s->root = 0;
s->root_extended = false;
+ s->root_scalable = false;
s->dmar_enabled = false;
s->intr_enabled = false;
s->iq_head = 0;
s->iq_size = 0;
s->qi_enabled = false;
s->iq_last_desc_type = VTD_INV_DESC_NONE;
+ s->iq_dw = false;
s->next_frcd_reg = 0;
s->cap = VTD_CAP_FRO | VTD_CAP_NFR | VTD_CAP_ND |
VTD_CAP_MAMV | VTD_CAP_PSI | VTD_CAP_SLLPS |
s->cap |= VTD_CAP_CM;
}
+ /* TODO: read cap/ecap from host to decide which cap to be exposed. */
+ if (s->scalable_mode) {
+ s->ecap |= VTD_ECAP_SMTS | VTD_ECAP_SRS | VTD_ECAP_SLTS;
+ }
+
vtd_reset_caches(s);
/* Define registers with default values and bit semantics */
vtd_define_long(s, DMAR_GCMD_REG, 0, 0xff800000UL, 0);
vtd_define_long_wo(s, DMAR_GCMD_REG, 0xff800000UL);
vtd_define_long(s, DMAR_GSTS_REG, 0, 0, 0);
- vtd_define_quad(s, DMAR_RTADDR_REG, 0, 0xfffffffffffff000ULL, 0);
+ vtd_define_quad(s, DMAR_RTADDR_REG, 0, 0xfffffffffffffc00ULL, 0);
vtd_define_quad(s, DMAR_CCMD_REG, 0, 0xe0000003ffffffffULL, 0);
vtd_define_quad_wo(s, DMAR_CCMD_REG, 0x3ffff0000ULL);
vtd_define_quad(s, DMAR_IQH_REG, 0, 0, 0);
vtd_define_quad(s, DMAR_IQT_REG, 0, 0x7fff0ULL, 0);
- vtd_define_quad(s, DMAR_IQA_REG, 0, 0xfffffffffffff007ULL, 0);
+ vtd_define_quad(s, DMAR_IQA_REG, 0, 0xfffffffffffff807ULL, 0);
vtd_define_long(s, DMAR_ICS_REG, 0, 0, 0x1UL);
vtd_define_long(s, DMAR_IECTL_REG, 0x80000000UL, 0x80000000UL, 0);
vtd_define_long(s, DMAR_IEDATA_REG, 0, 0xffffffffUL, 0);
return false;
}
+ if (s->scalable_mode && !s->dma_drain) {
+ error_setg(errp, "Need to set dma_drain for scalable mode");
+ return false;
+ }
+
return true;
}
memset(s->vtd_as_by_bus_num, 0, sizeof(s->vtd_as_by_bus_num));
memory_region_init_io(&s->csrmem, OBJECT(s), &vtd_mem_ops, s,
"intel_iommu", DMAR_REG_SIZE);
+
+ /* Create the shared memory regions by all devices */
+ memory_region_init(&s->mr_nodmar, OBJECT(s), "vtd-nodmar",
+ UINT64_MAX);
+ memory_region_init_io(&s->mr_ir, OBJECT(s), &vtd_mem_ir_ops,
+ s, "vtd-ir", VTD_INTERRUPT_ADDR_SIZE);
+ memory_region_init_alias(&s->mr_sys_alias, OBJECT(s),
+ "vtd-sys-alias", get_system_memory(), 0,
+ memory_region_size(get_system_memory()));
+ memory_region_add_subregion_overlap(&s->mr_nodmar, 0,
+ &s->mr_sys_alias, 0);
+ memory_region_add_subregion_overlap(&s->mr_nodmar,
+ VTD_INTERRUPT_ADDR_FIRST,
+ &s->mr_ir, 1);
+
sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->csrmem);
/* No corresponding destroy */
s->iotlb = g_hash_table_new_full(vtd_uint64_hash, vtd_uint64_equal,
projects / mirror_qemu.git / blobdiff