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-rw-r--r--hw/arm/sbsa-ref.c8
-rw-r--r--hw/arm/virt-acpi-build.c186
-rw-r--r--hw/arm/virt.c38
-rw-r--r--hw/intc/armv7m_nvic.c27
4 files changed, 159 insertions, 100 deletions
diff --git a/hw/arm/sbsa-ref.c b/hw/arm/sbsa-ref.c
index deae5cf..15c1ff4 100644
--- a/hw/arm/sbsa-ref.c
+++ b/hw/arm/sbsa-ref.c
@@ -19,6 +19,7 @@
*/
#include "qemu/osdep.h"
+#include "qemu/cutils.h"
#include "qemu/datadir.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
@@ -53,8 +54,7 @@
#include "target/arm/cpu-qom.h"
#include "target/arm/gtimer.h"
-#define RAMLIMIT_GB 8192
-#define RAMLIMIT_BYTES (RAMLIMIT_GB * GiB)
+#define RAMLIMIT_BYTES (8 * TiB)
#define NUM_IRQS 256
#define NUM_SMMU_IRQS 4
@@ -756,7 +756,9 @@ static void sbsa_ref_init(MachineState *machine)
sms->smp_cpus = smp_cpus;
if (machine->ram_size > sbsa_ref_memmap[SBSA_MEM].size) {
- error_report("sbsa-ref: cannot model more than %dGB RAM", RAMLIMIT_GB);
+ char *size_str = size_to_str(RAMLIMIT_BYTES);
+
+ error_report("sbsa-ref: cannot model more than %s of RAM", size_str);
exit(1);
}
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index 7e8e0f0..cd90c47 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -266,6 +266,43 @@ static int iort_idmap_compare(gconstpointer a, gconstpointer b)
return idmap_a->input_base - idmap_b->input_base;
}
+/* Compute ID ranges (RIDs) from RC that are directed to the ITS Group node */
+static void create_rc_its_idmaps(GArray *its_idmaps, GArray *smmu_idmaps)
+{
+ AcpiIortIdMapping *idmap;
+ AcpiIortIdMapping next_range = {0};
+
+ /*
+ * Based on the RID ranges that are directed to the SMMU, determine the
+ * bypassed RID ranges, i.e., the ones that are directed to the ITS Group
+ * node and do not pass through the SMMU, by subtracting the SMMU-bound
+ * ranges from the full RID range (0x0000–0xFFFF).
+ */
+ for (int i = 0; i < smmu_idmaps->len; i++) {
+ idmap = &g_array_index(smmu_idmaps, AcpiIortIdMapping, i);
+
+ if (next_range.input_base < idmap->input_base) {
+ next_range.id_count = idmap->input_base - next_range.input_base;
+ g_array_append_val(its_idmaps, next_range);
+ }
+
+ next_range.input_base = idmap->input_base + idmap->id_count;
+ }
+
+ /*
+ * Append the last RC -> ITS ID mapping.
+ *
+ * RIDs are 16-bit, according to the PCI Express 2.0 Base Specification, rev
+ * 0.9, section 2.2.6.2, "Transaction Descriptor - Transaction ID Field",
+ * hence the end of the range is 0x10000.
+ */
+ if (next_range.input_base < 0x10000) {
+ next_range.id_count = 0x10000 - next_range.input_base;
+ g_array_append_val(its_idmaps, next_range);
+ }
+}
+
+
/*
* Input Output Remapping Table (IORT)
* Conforms to "IO Remapping Table System Software on ARM Platforms",
@@ -276,10 +313,9 @@ build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
int i, nb_nodes, rc_mapping_count;
size_t node_size, smmu_offset = 0;
- AcpiIortIdMapping *idmap;
uint32_t id = 0;
- GArray *smmu_idmaps = g_array_new(false, true, sizeof(AcpiIortIdMapping));
- GArray *its_idmaps = g_array_new(false, true, sizeof(AcpiIortIdMapping));
+ GArray *rc_smmu_idmaps = g_array_new(false, true, sizeof(AcpiIortIdMapping));
+ GArray *rc_its_idmaps = g_array_new(false, true, sizeof(AcpiIortIdMapping));
AcpiTable table = { .sig = "IORT", .rev = 3, .oem_id = vms->oem_id,
.oem_table_id = vms->oem_table_id };
@@ -287,40 +323,39 @@ build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
acpi_table_begin(&table, table_data);
if (vms->iommu == VIRT_IOMMU_SMMUV3) {
- AcpiIortIdMapping next_range = {0};
-
object_child_foreach_recursive(object_get_root(),
- iort_host_bridges, smmu_idmaps);
+ iort_host_bridges, rc_smmu_idmaps);
/* Sort the smmu idmap by input_base */
- g_array_sort(smmu_idmaps, iort_idmap_compare);
+ g_array_sort(rc_smmu_idmaps, iort_idmap_compare);
/*
- * Split the whole RIDs by mapping from RC to SMMU,
- * build the ID mapping from RC to ITS directly.
+ * Knowing the ID ranges from the RC to the SMMU, it's possible to
+ * determine the ID ranges from RC that are directed to the ITS.
*/
- for (i = 0; i < smmu_idmaps->len; i++) {
- idmap = &g_array_index(smmu_idmaps, AcpiIortIdMapping, i);
+ create_rc_its_idmaps(rc_its_idmaps, rc_smmu_idmaps);
- if (next_range.input_base < idmap->input_base) {
- next_range.id_count = idmap->input_base - next_range.input_base;
- g_array_append_val(its_idmaps, next_range);
- }
+ nb_nodes = 2; /* RC and SMMUv3 */
+ rc_mapping_count = rc_smmu_idmaps->len;
- next_range.input_base = idmap->input_base + idmap->id_count;
- }
+ if (vms->its) {
+ /*
+ * Knowing the ID ranges from the RC to the SMMU, it's possible to
+ * determine the ID ranges from RC that go directly to ITS.
+ */
+ create_rc_its_idmaps(rc_its_idmaps, rc_smmu_idmaps);
- /* Append the last RC -> ITS ID mapping */
- if (next_range.input_base < 0x10000) {
- next_range.id_count = 0x10000 - next_range.input_base;
- g_array_append_val(its_idmaps, next_range);
+ nb_nodes++; /* ITS */
+ rc_mapping_count += rc_its_idmaps->len;
}
-
- nb_nodes = 3; /* RC, ITS, SMMUv3 */
- rc_mapping_count = smmu_idmaps->len + its_idmaps->len;
} else {
- nb_nodes = 2; /* RC, ITS */
- rc_mapping_count = 1;
+ if (vms->its) {
+ nb_nodes = 2; /* RC and ITS */
+ rc_mapping_count = 1; /* Direct map to ITS */
+ } else {
+ nb_nodes = 1; /* RC only */
+ rc_mapping_count = 0; /* No output mapping */
+ }
}
/* Number of IORT Nodes */
build_append_int_noprefix(table_data, nb_nodes, 4);
@@ -329,31 +364,43 @@ build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
build_append_int_noprefix(table_data, IORT_NODE_OFFSET, 4);
build_append_int_noprefix(table_data, 0, 4); /* Reserved */
- /* Table 12 ITS Group Format */
- build_append_int_noprefix(table_data, 0 /* ITS Group */, 1); /* Type */
- node_size = 20 /* fixed header size */ + 4 /* 1 GIC ITS Identifier */;
- build_append_int_noprefix(table_data, node_size, 2); /* Length */
- build_append_int_noprefix(table_data, 1, 1); /* Revision */
- build_append_int_noprefix(table_data, id++, 4); /* Identifier */
- build_append_int_noprefix(table_data, 0, 4); /* Number of ID mappings */
- build_append_int_noprefix(table_data, 0, 4); /* Reference to ID Array */
- build_append_int_noprefix(table_data, 1, 4); /* Number of ITSs */
- /* GIC ITS Identifier Array */
- build_append_int_noprefix(table_data, 0 /* MADT translation_id */, 4);
+ if (vms->its) {
+ /* Table 12 ITS Group Format */
+ build_append_int_noprefix(table_data, 0 /* ITS Group */, 1); /* Type */
+ node_size = 20 /* fixed header size */ + 4 /* 1 GIC ITS Identifier */;
+ build_append_int_noprefix(table_data, node_size, 2); /* Length */
+ build_append_int_noprefix(table_data, 1, 1); /* Revision */
+ build_append_int_noprefix(table_data, id++, 4); /* Identifier */
+ build_append_int_noprefix(table_data, 0, 4); /* Number of ID mappings */
+ build_append_int_noprefix(table_data, 0, 4); /* Reference to ID Array */
+ build_append_int_noprefix(table_data, 1, 4); /* Number of ITSs */
+ /* GIC ITS Identifier Array */
+ build_append_int_noprefix(table_data, 0 /* MADT translation_id */, 4);
+ }
if (vms->iommu == VIRT_IOMMU_SMMUV3) {
int irq = vms->irqmap[VIRT_SMMU] + ARM_SPI_BASE;
-
+ int smmu_mapping_count, offset_to_id_array;
+
+ if (vms->its) {
+ smmu_mapping_count = 1; /* ITS Group node */
+ offset_to_id_array = SMMU_V3_ENTRY_SIZE; /* Just after the header */
+ } else {
+ smmu_mapping_count = 0; /* No ID mappings */
+ offset_to_id_array = 0; /* No ID mappings array */
+ }
smmu_offset = table_data->len - table.table_offset;
/* Table 9 SMMUv3 Format */
build_append_int_noprefix(table_data, 4 /* SMMUv3 */, 1); /* Type */
- node_size = SMMU_V3_ENTRY_SIZE + ID_MAPPING_ENTRY_SIZE;
+ node_size = SMMU_V3_ENTRY_SIZE +
+ (ID_MAPPING_ENTRY_SIZE * smmu_mapping_count);
build_append_int_noprefix(table_data, node_size, 2); /* Length */
build_append_int_noprefix(table_data, 4, 1); /* Revision */
build_append_int_noprefix(table_data, id++, 4); /* Identifier */
- build_append_int_noprefix(table_data, 1, 4); /* Number of ID mappings */
+ /* Number of ID mappings */
+ build_append_int_noprefix(table_data, smmu_mapping_count, 4);
/* Reference to ID Array */
- build_append_int_noprefix(table_data, SMMU_V3_ENTRY_SIZE, 4);
+ build_append_int_noprefix(table_data, offset_to_id_array, 4);
/* Base address */
build_append_int_noprefix(table_data, vms->memmap[VIRT_SMMU].base, 8);
/* Flags */
@@ -369,9 +416,11 @@ build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
build_append_int_noprefix(table_data, 0, 4); /* Proximity domain */
/* DeviceID mapping index (ignored since interrupts are GSIV based) */
build_append_int_noprefix(table_data, 0, 4);
-
- /* output IORT node is the ITS group node (the first node) */
- build_iort_id_mapping(table_data, 0, 0x10000, IORT_NODE_OFFSET);
+ /* Array of ID mappings */
+ if (smmu_mapping_count) {
+ /* Output IORT node is the ITS Group node (the first node). */
+ build_iort_id_mapping(table_data, 0, 0x10000, IORT_NODE_OFFSET);
+ }
}
/* Table 17 Root Complex Node */
@@ -407,29 +456,44 @@ build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
if (vms->iommu == VIRT_IOMMU_SMMUV3) {
AcpiIortIdMapping *range;
- /* translated RIDs connect to SMMUv3 node: RC -> SMMUv3 -> ITS */
- for (i = 0; i < smmu_idmaps->len; i++) {
- range = &g_array_index(smmu_idmaps, AcpiIortIdMapping, i);
- /* output IORT node is the smmuv3 node */
+ /*
+ * Map RIDs (input) from RC to SMMUv3 nodes: RC -> SMMUv3.
+ *
+ * N.B.: The mapping from SMMUv3 to ITS Group node (SMMUv3 -> ITS) is
+ * defined in the SMMUv3 table, where all SMMUv3 IDs are mapped to the
+ * ITS Group node, if ITS is available.
+ */
+ for (i = 0; i < rc_smmu_idmaps->len; i++) {
+ range = &g_array_index(rc_smmu_idmaps, AcpiIortIdMapping, i);
+ /* Output IORT node is the SMMUv3 node. */
build_iort_id_mapping(table_data, range->input_base,
range->id_count, smmu_offset);
}
- /* bypassed RIDs connect to ITS group node directly: RC -> ITS */
- for (i = 0; i < its_idmaps->len; i++) {
- range = &g_array_index(its_idmaps, AcpiIortIdMapping, i);
- /* output IORT node is the ITS group node (the first node) */
- build_iort_id_mapping(table_data, range->input_base,
- range->id_count, IORT_NODE_OFFSET);
+ if (vms->its) {
+ /*
+ * Map bypassed (don't go through the SMMU) RIDs (input) to
+ * ITS Group node directly: RC -> ITS.
+ */
+ for (i = 0; i < rc_its_idmaps->len; i++) {
+ range = &g_array_index(rc_its_idmaps, AcpiIortIdMapping, i);
+ /* Output IORT node is the ITS Group node (the first node). */
+ build_iort_id_mapping(table_data, range->input_base,
+ range->id_count, IORT_NODE_OFFSET);
+ }
}
} else {
- /* output IORT node is the ITS group node (the first node) */
+ /*
+ * Map all RIDs (input) to ITS Group node directly, since there is no
+ * SMMU: RC -> ITS.
+ * Output IORT node is the ITS Group node (the first node).
+ */
build_iort_id_mapping(table_data, 0, 0x10000, IORT_NODE_OFFSET);
}
acpi_table_end(linker, &table);
- g_array_free(smmu_idmaps, true);
- g_array_free(its_idmaps, true);
+ g_array_free(rc_smmu_idmaps, true);
+ g_array_free(rc_its_idmaps, true);
}
/*
@@ -737,7 +801,7 @@ build_madt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
memmap[VIRT_HIGH_GIC_REDIST2].size);
}
- if (its_class_name()) {
+ if (vms->its) {
/*
* ACPI spec, Revision 6.0 Errata A
* (original 6.0 definition has invalid Length)
@@ -969,10 +1033,8 @@ void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables)
vms->oem_table_id);
}
- if (its_class_name()) {
- acpi_add_table(table_offsets, tables_blob);
- build_iort(tables_blob, tables->linker, vms);
- }
+ acpi_add_table(table_offsets, tables_blob);
+ build_iort(tables_blob, tables->linker, vms);
#ifdef CONFIG_TPM
if (tpm_get_version(tpm_find()) == TPM_VERSION_2_0) {
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 99fde58..3bcdf92 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -705,21 +705,18 @@ static inline DeviceState *create_acpi_ged(VirtMachineState *vms)
static void create_its(VirtMachineState *vms)
{
- const char *itsclass = its_class_name();
DeviceState *dev;
- if (!strcmp(itsclass, "arm-gicv3-its")) {
- if (!vms->tcg_its) {
- itsclass = NULL;
- }
- }
-
- if (!itsclass) {
- /* Do nothing if not supported */
+ assert(vms->its);
+ if (!kvm_irqchip_in_kernel() && !vms->tcg_its) {
+ /*
+ * Do nothing if ITS is neither supported by the host nor emulated by
+ * the machine.
+ */
return;
}
- dev = qdev_new(itsclass);
+ dev = qdev_new(its_class_name());
object_property_set_link(OBJECT(dev), "parent-gicv3", OBJECT(vms->gic),
&error_abort);
@@ -2029,10 +2026,11 @@ static void finalize_gic_version(VirtMachineState *vms)
}
/*
- * virt_cpu_post_init() must be called after the CPUs have
- * been realized and the GIC has been created.
+ * virt_post_cpus_gic_realized() must be called after the CPUs and
+ * the GIC have both been realized.
*/
-static void virt_cpu_post_init(VirtMachineState *vms, MemoryRegion *sysmem)
+static void virt_post_cpus_gic_realized(VirtMachineState *vms,
+ MemoryRegion *sysmem)
{
int max_cpus = MACHINE(vms)->smp.max_cpus;
bool aarch64, pmu, steal_time;
@@ -2203,14 +2201,14 @@ static void machvirt_init(MachineState *machine)
exit(1);
}
- if (vms->secure && (kvm_enabled() || hvf_enabled())) {
+ if (vms->secure && !tcg_enabled() && !qtest_enabled()) {
error_report("mach-virt: %s does not support providing "
"Security extensions (TrustZone) to the guest CPU",
current_accel_name());
exit(1);
}
- if (vms->virt && (kvm_enabled() || hvf_enabled())) {
+ if (vms->virt && !tcg_enabled() && !qtest_enabled()) {
error_report("mach-virt: %s does not support providing "
"Virtualization extensions to the guest CPU",
current_accel_name());
@@ -2349,7 +2347,7 @@ static void machvirt_init(MachineState *machine)
create_gic(vms, sysmem);
- virt_cpu_post_init(vms, sysmem);
+ virt_post_cpus_gic_realized(vms, sysmem);
fdt_add_pmu_nodes(vms);
@@ -3342,12 +3340,8 @@ static void virt_instance_init(Object *obj)
/* Default allows ITS instantiation */
vms->its = true;
-
- if (vmc->no_tcg_its) {
- vms->tcg_its = false;
- } else {
- vms->tcg_its = true;
- }
+ /* Allow ITS emulation if the machine version supports it */
+ vms->tcg_its = !vmc->no_tcg_its;
/* Default disallows iommu instantiation */
vms->iommu = VIRT_IOMMU_NONE;
diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c
index 83ff74f..6d85720 100644
--- a/hw/intc/armv7m_nvic.c
+++ b/hw/intc/armv7m_nvic.c
@@ -988,6 +988,7 @@ static void nvic_nmi_trigger(void *opaque, int n, int level)
static uint32_t nvic_readl(NVICState *s, uint32_t offset, MemTxAttrs attrs)
{
ARMCPU *cpu = s->cpu;
+ ARMISARegisters *isar = &cpu->isar;
uint32_t val;
switch (offset) {
@@ -1263,17 +1264,17 @@ static uint32_t nvic_readl(NVICState *s, uint32_t offset, MemTxAttrs attrs)
if (!arm_feature(&cpu->env, ARM_FEATURE_M_MAIN)) {
goto bad_offset;
}
- return cpu->isar.id_pfr0;
+ return GET_IDREG(isar, ID_PFR0);
case 0xd44: /* PFR1. */
if (!arm_feature(&cpu->env, ARM_FEATURE_M_MAIN)) {
goto bad_offset;
}
- return cpu->isar.id_pfr1;
+ return GET_IDREG(isar, ID_PFR1);
case 0xd48: /* DFR0. */
if (!arm_feature(&cpu->env, ARM_FEATURE_M_MAIN)) {
goto bad_offset;
}
- return cpu->isar.id_dfr0;
+ return GET_IDREG(isar, ID_DFR0);
case 0xd4c: /* AFR0. */
if (!arm_feature(&cpu->env, ARM_FEATURE_M_MAIN)) {
goto bad_offset;
@@ -1283,52 +1284,52 @@ static uint32_t nvic_readl(NVICState *s, uint32_t offset, MemTxAttrs attrs)
if (!arm_feature(&cpu->env, ARM_FEATURE_M_MAIN)) {
goto bad_offset;
}
- return cpu->isar.id_mmfr0;
+ return GET_IDREG(isar, ID_MMFR0);
case 0xd54: /* MMFR1. */
if (!arm_feature(&cpu->env, ARM_FEATURE_M_MAIN)) {
goto bad_offset;
}
- return cpu->isar.id_mmfr1;
+ return GET_IDREG(isar, ID_MMFR1);
case 0xd58: /* MMFR2. */
if (!arm_feature(&cpu->env, ARM_FEATURE_M_MAIN)) {
goto bad_offset;
}
- return cpu->isar.id_mmfr2;
+ return GET_IDREG(isar, ID_MMFR2);
case 0xd5c: /* MMFR3. */
if (!arm_feature(&cpu->env, ARM_FEATURE_M_MAIN)) {
goto bad_offset;
}
- return cpu->isar.id_mmfr3;
+ return GET_IDREG(isar, ID_MMFR3);
case 0xd60: /* ISAR0. */
if (!arm_feature(&cpu->env, ARM_FEATURE_M_MAIN)) {
goto bad_offset;
}
- return cpu->isar.id_isar0;
+ return GET_IDREG(&cpu->isar, ID_ISAR0);
case 0xd64: /* ISAR1. */
if (!arm_feature(&cpu->env, ARM_FEATURE_M_MAIN)) {
goto bad_offset;
}
- return cpu->isar.id_isar1;
+ return GET_IDREG(&cpu->isar, ID_ISAR1);
case 0xd68: /* ISAR2. */
if (!arm_feature(&cpu->env, ARM_FEATURE_M_MAIN)) {
goto bad_offset;
}
- return cpu->isar.id_isar2;
+ return GET_IDREG(&cpu->isar, ID_ISAR2);
case 0xd6c: /* ISAR3. */
if (!arm_feature(&cpu->env, ARM_FEATURE_M_MAIN)) {
goto bad_offset;
}
- return cpu->isar.id_isar3;
+ return GET_IDREG(&cpu->isar, ID_ISAR3);
case 0xd70: /* ISAR4. */
if (!arm_feature(&cpu->env, ARM_FEATURE_M_MAIN)) {
goto bad_offset;
}
- return cpu->isar.id_isar4;
+ return GET_IDREG(&cpu->isar, ID_ISAR4);
case 0xd74: /* ISAR5. */
if (!arm_feature(&cpu->env, ARM_FEATURE_M_MAIN)) {
goto bad_offset;
}
- return cpu->isar.id_isar5;
+ return GET_IDREG(&cpu->isar, ID_ISAR5);
case 0xd78: /* CLIDR */
return cpu->clidr;
case 0xd7c: /* CTR */