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[PATCH v7 08/13] hw/riscv/virt-acpi-build.c: Add CMO information in RHCT
From: |
Sunil V L |
Subject: |
[PATCH v7 08/13] hw/riscv/virt-acpi-build.c: Add CMO information in RHCT |
Date: |
Fri, 3 Nov 2023 08:46:44 +0530 |
When CMO related extensions like Zicboz, Zicbom and Zicbop are enabled, the
block size for those extensions need to be communicated via CMO node in
RHCT. Add CMO node in RHCT if any of those CMO extensions are detected.
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
---
hw/riscv/virt-acpi-build.c | 64 +++++++++++++++++++++++++++++++++-----
1 file changed, 56 insertions(+), 8 deletions(-)
diff --git a/hw/riscv/virt-acpi-build.c b/hw/riscv/virt-acpi-build.c
index ec49c8804b..506d487ede 100644
--- a/hw/riscv/virt-acpi-build.c
+++ b/hw/riscv/virt-acpi-build.c
@@ -140,6 +140,7 @@ static void acpi_dsdt_add_cpus(Aml *scope, RISCVVirtState
*s)
* 5.2.36 RISC-V Hart Capabilities Table (RHCT)
* REF: https://github.com/riscv-non-isa/riscv-acpi/issues/16
* https://drive.google.com/file/d/1nP3nFiH4jkPMp6COOxP6123DCZKR-tia/view
+ * https://drive.google.com/file/d/1sKbOa8m1UZw1JkquZYe3F1zQBN1xXsaf/view
*/
static void build_rhct(GArray *table_data,
BIOSLinker *linker,
@@ -149,8 +150,8 @@ static void build_rhct(GArray *table_data,
MachineState *ms = MACHINE(s);
const CPUArchIdList *arch_ids = mc->possible_cpu_arch_ids(ms);
size_t len, aligned_len;
- uint32_t isa_offset, num_rhct_nodes;
- RISCVCPU *cpu;
+ uint32_t isa_offset, num_rhct_nodes, cmo_offset = 0;
+ RISCVCPU *cpu = &s->soc[0].harts[0];
char *isa;
AcpiTable table = { .sig = "RHCT", .rev = 1, .oem_id = s->oem_id,
@@ -166,6 +167,9 @@ static void build_rhct(GArray *table_data,
/* ISA + N hart info */
num_rhct_nodes = 1 + ms->smp.cpus;
+ if (cpu->cfg.ext_zicbom || cpu->cfg.ext_zicboz) {
+ num_rhct_nodes++;
+ }
/* Number of RHCT nodes*/
build_append_int_noprefix(table_data, num_rhct_nodes, 4);
@@ -177,7 +181,6 @@ static void build_rhct(GArray *table_data,
isa_offset = table_data->len - table.table_offset;
build_append_int_noprefix(table_data, 0, 2); /* Type 0 */
- cpu = &s->soc[0].harts[0];
isa = riscv_isa_string(cpu);
len = 8 + strlen(isa) + 1;
aligned_len = (len % 2) ? (len + 1) : len;
@@ -193,14 +196,59 @@ static void build_rhct(GArray *table_data,
build_append_int_noprefix(table_data, 0x0, 1); /* Optional Padding */
}
+ /* CMO node */
+ if (cpu->cfg.ext_zicbom || cpu->cfg.ext_zicboz) {
+ cmo_offset = table_data->len - table.table_offset;
+ build_append_int_noprefix(table_data, 1, 2); /* Type */
+ build_append_int_noprefix(table_data, 10, 2); /* Length */
+ build_append_int_noprefix(table_data, 0x1, 2); /* Revision */
+ build_append_int_noprefix(table_data, 0, 1); /* Reserved */
+
+ /* CBOM block size */
+ if (cpu->cfg.cbom_blocksize) {
+ build_append_int_noprefix(table_data,
+ __builtin_ctz(cpu->cfg.cbom_blocksize),
+ 1);
+ } else {
+ build_append_int_noprefix(table_data, 0, 1);
+ }
+
+ /* CBOP block size */
+ build_append_int_noprefix(table_data, 0, 1);
+
+ /* CBOZ block size */
+ if (cpu->cfg.cboz_blocksize) {
+ build_append_int_noprefix(table_data,
+ __builtin_ctz(cpu->cfg.cboz_blocksize),
+ 1);
+ } else {
+ build_append_int_noprefix(table_data, 0, 1);
+ }
+ }
+
/* Hart Info Node */
for (int i = 0; i < arch_ids->len; i++) {
+ len = 16;
+ int num_offsets = 1;
build_append_int_noprefix(table_data, 0xFFFF, 2); /* Type */
- build_append_int_noprefix(table_data, 16, 2); /* Length */
- build_append_int_noprefix(table_data, 0x1, 2); /* Revision */
- build_append_int_noprefix(table_data, 1, 2); /* Number of offsets */
- build_append_int_noprefix(table_data, i, 4); /* ACPI Processor UID
*/
- build_append_int_noprefix(table_data, isa_offset, 4); /* Offsets[0] */
+
+ /* Length */
+ if (cmo_offset) {
+ len += 4;
+ num_offsets++;
+ }
+
+ build_append_int_noprefix(table_data, len, 2);
+ build_append_int_noprefix(table_data, 0x1, 2); /* Revision */
+ /* Number of offsets */
+ build_append_int_noprefix(table_data, num_offsets, 2);
+ build_append_int_noprefix(table_data, i, 4); /* ACPI Processor UID */
+
+ /* Offsets */
+ build_append_int_noprefix(table_data, isa_offset, 4);
+ if (cmo_offset) {
+ build_append_int_noprefix(table_data, cmo_offset, 4);
+ }
}
acpi_table_end(linker, &table);
--
2.39.2
- [PATCH v7 00/13] RISC-V: ACPI: Enable AIA, PLIC and update RHCT, Sunil V L, 2023/11/02
- [PATCH v7 01/13] hw/arm/virt-acpi-build.c: Migrate fw_cfg creation to common location, Sunil V L, 2023/11/02
- [PATCH v7 02/13] hw/arm/virt-acpi-build.c: Migrate virtio creation to common location, Sunil V L, 2023/11/02
- [PATCH v7 03/13] hw/i386/acpi-microvm.c: Use common function to add virtio in DSDT, Sunil V L, 2023/11/02
- [PATCH v7 04/13] hw/riscv: virt: Make few IMSIC macros and functions public, Sunil V L, 2023/11/02
- [PATCH v7 05/13] hw/riscv/virt-acpi-build.c: Add AIA support in RINTC, Sunil V L, 2023/11/02
- [PATCH v7 06/13] hw/riscv/virt-acpi-build.c: Add IMSIC in the MADT, Sunil V L, 2023/11/02
- [PATCH v7 07/13] hw/riscv/virt-acpi-build.c: Add APLIC in the MADT, Sunil V L, 2023/11/02
- [PATCH v7 08/13] hw/riscv/virt-acpi-build.c: Add CMO information in RHCT,
Sunil V L <=
- [PATCH v7 09/13] hw/riscv/virt-acpi-build.c: Add MMU node in RHCT, Sunil V L, 2023/11/02
- [PATCH v7 10/13] hw/pci-host/gpex: Define properties for MMIO ranges, Sunil V L, 2023/11/02
- [PATCH v7 12/13] hw/riscv/virt-acpi-build.c: Add IO controllers and devices, Sunil V L, 2023/11/02
- [PATCH v7 11/13] hw/riscv/virt: Update GPEX MMIO related properties, Sunil V L, 2023/11/02
- [PATCH v7 13/13] hw/riscv/virt-acpi-build.c: Add PLIC in MADT, Sunil V L, 2023/11/02