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[PATCH v2 2/6] hw/arm/virt: Use VIRT_GIC_VERSION defines
From: |
Eric Auger |
Subject: |
[PATCH v2 2/6] hw/arm/virt: Use VIRT_GIC_VERSION defines |
Date: |
Sun, 1 Mar 2020 11:40:36 +0100 |
We plan to introduce yet another value for the gic version (nosel).
As we already use exotic values such as 0 and -1, let's introduce
some defines.
Signed-off-by: Eric Auger <address@hidden>
---
hw/arm/virt.c | 30 +++++++++++++++---------------
include/hw/arm/virt.h | 7 ++++++-
2 files changed, 21 insertions(+), 16 deletions(-)
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index c093f0ab85..b449a445de 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -298,7 +298,7 @@ static void fdt_add_timer_nodes(const VirtMachineState *vms)
irqflags = GIC_FDT_IRQ_FLAGS_EDGE_LO_HI;
}
- if (vms->gic_version == 2) {
+ if (vms->gic_version == VIRT_GIC_VERSION_2) {
irqflags = deposit32(irqflags, GIC_FDT_IRQ_PPI_CPU_START,
GIC_FDT_IRQ_PPI_CPU_WIDTH,
(1 << vms->smp_cpus) - 1);
@@ -439,7 +439,7 @@ static void fdt_add_gic_node(VirtMachineState *vms)
qemu_fdt_setprop_cell(vms->fdt, nodename, "#address-cells", 0x2);
qemu_fdt_setprop_cell(vms->fdt, nodename, "#size-cells", 0x2);
qemu_fdt_setprop(vms->fdt, nodename, "ranges", NULL, 0);
- if (vms->gic_version == 3) {
+ if (vms->gic_version == VIRT_GIC_VERSION_3) {
int nb_redist_regions = virt_gicv3_redist_region_count(vms);
qemu_fdt_setprop_string(vms->fdt, nodename, "compatible",
@@ -518,7 +518,7 @@ static void fdt_add_pmu_nodes(const VirtMachineState *vms)
}
}
- if (vms->gic_version == 2) {
+ if (vms->gic_version == VIRT_GIC_VERSION_2) {
irqflags = deposit32(irqflags, GIC_FDT_IRQ_PPI_CPU_START,
GIC_FDT_IRQ_PPI_CPU_WIDTH,
(1 << vms->smp_cpus) - 1);
@@ -1469,7 +1469,7 @@ static uint64_t virt_cpu_mp_affinity(VirtMachineState
*vms, int idx)
* purposes are to make TCG consistent (with 64-bit KVM hosts)
* and to improve SGI efficiency.
*/
- if (vms->gic_version == 3) {
+ if (vms->gic_version == VIRT_GIC_VERSION_3) {
clustersz = GICV3_TARGETLIST_BITS;
} else {
clustersz = GIC_TARGETLIST_BITS;
@@ -1560,15 +1560,15 @@ static void machvirt_init(MachineState *machine)
/* We can probe only here because during property set
* KVM is not available yet
*/
- if (vms->gic_version <= 0) {
- /* "host" or "max" */
+ if (vms->gic_version == VIRT_GIC_VERSION_HOST ||
+ vms->gic_version == VIRT_GIC_VERSION_MAX) {
if (!kvm_enabled()) {
- if (vms->gic_version == 0) {
+ if (vms->gic_version == VIRT_GIC_VERSION_HOST) {
error_report("gic-version=host requires KVM");
exit(1);
} else {
/* "max": currently means 3 for TCG */
- vms->gic_version = 3;
+ vms->gic_version = VIRT_GIC_VERSION_3;
}
} else {
vms->gic_version = kvm_arm_vgic_probe();
@@ -1627,7 +1627,7 @@ static void machvirt_init(MachineState *machine)
/* The maximum number of CPUs depends on the GIC version, or on how
* many redistributors we can fit into the memory map.
*/
- if (vms->gic_version == 3) {
+ if (vms->gic_version == VIRT_GIC_VERSION_3) {
virt_max_cpus =
vms->memmap[VIRT_GIC_REDIST].size / GICV3_REDIST_SIZE;
virt_max_cpus +=
@@ -1855,7 +1855,7 @@ static void virt_set_its(Object *obj, bool value, Error
**errp)
static char *virt_get_gic_version(Object *obj, Error **errp)
{
VirtMachineState *vms = VIRT_MACHINE(obj);
- const char *val = vms->gic_version == 3 ? "3" : "2";
+ const char *val = vms->gic_version == VIRT_GIC_VERSION_3 ? "3" : "2";
return g_strdup(val);
}
@@ -1865,13 +1865,13 @@ static void virt_set_gic_version(Object *obj, const
char *value, Error **errp)
VirtMachineState *vms = VIRT_MACHINE(obj);
if (!strcmp(value, "3")) {
- vms->gic_version = 3;
+ vms->gic_version = VIRT_GIC_VERSION_3;
} else if (!strcmp(value, "2")) {
- vms->gic_version = 2;
+ vms->gic_version = VIRT_GIC_VERSION_2;
} else if (!strcmp(value, "host")) {
- vms->gic_version = 0; /* Will probe later */
+ vms->gic_version = VIRT_GIC_VERSION_HOST; /* Will probe later */
} else if (!strcmp(value, "max")) {
- vms->gic_version = -1; /* Will probe later */
+ vms->gic_version = VIRT_GIC_VERSION_MAX; /* Will probe later */
} else {
error_setg(errp, "Invalid gic-version value");
error_append_hint(errp, "Valid values are 3, 2, host, max.\n");
@@ -2139,7 +2139,7 @@ static void virt_instance_init(Object *obj)
"physical address space above 32 bits",
NULL);
/* Default GIC type is v2 */
- vms->gic_version = 2;
+ vms->gic_version = VIRT_GIC_VERSION_2;
object_property_add_str(obj, "gic-version", virt_get_gic_version,
virt_set_gic_version, NULL);
object_property_set_description(obj, "gic-version",
diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h
index 02f500cb8e..6325b98269 100644
--- a/include/hw/arm/virt.h
+++ b/include/hw/arm/virt.h
@@ -95,6 +95,11 @@ typedef enum VirtIOMMUType {
VIRT_IOMMU_VIRTIO,
} VirtIOMMUType;
+#define VIRT_GIC_VERSION_MAX (-1)
+#define VIRT_GIC_VERSION_HOST 0
+#define VIRT_GIC_VERSION_2 2
+#define VIRT_GIC_VERSION_3 3
+
typedef struct MemMapEntry {
hwaddr base;
hwaddr size;
@@ -162,7 +167,7 @@ static inline int
virt_gicv3_redist_region_count(VirtMachineState *vms)
uint32_t redist0_capacity =
vms->memmap[VIRT_GIC_REDIST].size / GICV3_REDIST_SIZE;
- assert(vms->gic_version == 3);
+ assert(vms->gic_version == VIRT_GIC_VERSION_3);
return vms->smp_cpus > redist0_capacity ? 2 : 1;
}
--
2.20.1
- [PATCH v2 0/6] hw/arm/virt: kvm: allow gicv3 by default if v2 cannot work, Eric Auger, 2020/03/01
- [PATCH v2 1/6] hw/arm/virt: Document 'max' value in gic-version property description, Eric Auger, 2020/03/01
- [PATCH v2 2/6] hw/arm/virt: Use VIRT_GIC_VERSION defines,
Eric Auger <=
- [PATCH v2 3/6] hw/arm/virt: Introduce finalize_gic_version(), Eric Auger, 2020/03/01
- [PATCH v2 4/6] target/arm/kvm: Let kvm_arm_vgic_probe() return a bitmap, Eric Auger, 2020/03/01
- [PATCH v2 5/6] hw/arm/virt: kvm: Check the chosen gic version is supported by the host, Eric Auger, 2020/03/01
- [PATCH v2 6/6] hw/arm/virt: kvm: allow gicv3 by default if v2 cannot work, Eric Auger, 2020/03/01