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hw/riscv/virt-acpi-build.c: Add SRAT and SLIT ACPI tables

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Enable ACPI NUMA support by adding the following 2 ACPI tables:
SRAT: provides the association for memory/Harts and Proximity Domains
SLIT: provides the relative distance between Proximity Domains

The SRAT RINTC Affinity Structure definition[1] was based on the recently
approved ACPI CodeFirst ECR[2].

[1] https://github.com/riscv-non-isa/riscv-acpi/issues/25
[2] https://mantis.uefi.org/mantis/view.php?id=2433

Signed-off-by: Haibo Xu <haibo1.xu@intel.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Message-ID: <20240129094200.3581037-1-haibo1.xu@intel.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Haibo Xu 2024-01-29 17:42:00 +08:00 committed by Alistair Francis
parent ef8cabab3c
commit a29f5b9576
1 changed files with 60 additions and 0 deletions
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60
hw/riscv/virt-acpi-build.c
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@ -564,11 +564,61 @@ static void build_madt(GArray *table_data,
acpi_table_end(linker, &table);
}
/*
* ACPI spec, Revision 6.5+
* 5.2.16 System Resource Affinity Table (SRAT)
* REF: https://github.com/riscv-non-isa/riscv-acpi/issues/25
* https://drive.google.com/file/d/1YTdDx2IPm5IeZjAW932EYU-tUtgS08tX/view
*/
static void
build_srat(GArray *table_data, BIOSLinker *linker, RISCVVirtState *vms)
{
int i;
uint64_t mem_base;
MachineClass *mc = MACHINE_GET_CLASS(vms);
MachineState *ms = MACHINE(vms);
const CPUArchIdList *cpu_list = mc->possible_cpu_arch_ids(ms);
AcpiTable table = { .sig = "SRAT", .rev = 3, .oem_id = vms->oem_id,
.oem_table_id = vms->oem_table_id };
acpi_table_begin(&table, table_data);
build_append_int_noprefix(table_data, 1, 4); /* Reserved */
build_append_int_noprefix(table_data, 0, 8); /* Reserved */
for (i = 0; i < cpu_list->len; ++i) {
uint32_t nodeid = cpu_list->cpus[i].props.node_id;
/*
* 5.2.16.8 RINTC Affinity Structure
*/
build_append_int_noprefix(table_data, 7, 1); /* Type */
build_append_int_noprefix(table_data, 20, 1); /* Length */
build_append_int_noprefix(table_data, 0, 2); /* Reserved */
build_append_int_noprefix(table_data, nodeid, 4); /* Proximity Domain */
build_append_int_noprefix(table_data, i, 4); /* ACPI Processor UID */
/* Flags, Table 5-70 */
build_append_int_noprefix(table_data, 1 /* Flags: Enabled */, 4);
build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */
}
mem_base = vms->memmap[VIRT_DRAM].base;
for (i = 0; i < ms->numa_state->num_nodes; ++i) {
if (ms->numa_state->nodes[i].node_mem > 0) {
build_srat_memory(table_data, mem_base,
ms->numa_state->nodes[i].node_mem, i,
MEM_AFFINITY_ENABLED);
mem_base += ms->numa_state->nodes[i].node_mem;
}
}
acpi_table_end(linker, &table);
}
static void virt_acpi_build(RISCVVirtState *s, AcpiBuildTables *tables)
{
GArray *table_offsets;
unsigned dsdt, xsdt;
GArray *tables_blob = tables->table_data;
MachineState *ms = MACHINE(s);
table_offsets = g_array_new(false, true,
sizeof(uint32_t));
@ -604,6 +654,16 @@ static void virt_acpi_build(RISCVVirtState *s, AcpiBuildTables *tables)
s->oem_table_id);
}
if (ms->numa_state->num_nodes > 0) {
acpi_add_table(table_offsets, tables_blob);
build_srat(tables_blob, tables->linker, s);
if (ms->numa_state->have_numa_distance) {
acpi_add_table(table_offsets, tables_blob);
build_slit(tables_blob, tables->linker, ms, s->oem_id,
s->oem_table_id);
}
}
/* XSDT is pointed to by RSDP */
xsdt = tables_blob->len;
build_xsdt(tables_blob, tables->linker, table_offsets, s->oem_id,