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Tsirkin" , Igor Mammedov , Ani Sinha , Marcel Apfelbaum , Paolo Bonzini , Richard Henderson , Eduardo Habkost , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Gerd Hoffmann , Palmer Dabbelt , Alistair Francis , Bin Meng , Weiwei Li , Daniel Henrique Barboza , Liu Zhiwei , Anup Patel , Atish Kumar Patra , Haibo Xu , Sunil V L , Andrew Jones Subject: [PATCH v5 08/13] hw/riscv/virt-acpi-build.c: Add CMO information in RHCT Date: Mon, 30 Oct 2023 18:50:53 +0530 Message-Id: <20231030132058.763556-9-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231030132058.763556-1-sunilvl@ventanamicro.com> References: <20231030132058.763556-1-sunilvl@ventanamicro.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::102d; envelope-from=sunilvl@ventanamicro.com; helo=mail-pj1-x102d.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @ventanamicro.com) X-ZM-MESSAGEID: 1698672256880100006 Content-Type: text/plain; charset="utf-8" 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 Reviewed-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Acked-by: Alistair Francis --- 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, RISCVVirtSta= te *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 =3D MACHINE(s); const CPUArchIdList *arch_ids =3D 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 =3D 0; + RISCVCPU *cpu =3D &s->soc[0].harts[0]; char *isa; =20 AcpiTable table =3D { .sig =3D "RHCT", .rev =3D 1, .oem_id =3D s->oem_= id, @@ -166,6 +167,9 @@ static void build_rhct(GArray *table_data, =20 /* ISA + N hart info */ num_rhct_nodes =3D 1 + ms->smp.cpus; + if (cpu->cfg.ext_zicbom || cpu->cfg.ext_zicboz) { + num_rhct_nodes++; + } =20 /* 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 =3D table_data->len - table.table_offset; build_append_int_noprefix(table_data, 0, 2); /* Type 0 */ =20 - cpu =3D &s->soc[0].harts[0]; isa =3D riscv_isa_string(cpu); len =3D 8 + strlen(isa) + 1; aligned_len =3D (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 Paddi= ng */ } =20 + /* CMO node */ + if (cpu->cfg.ext_zicbom || cpu->cfg.ext_zicboz) { + cmo_offset =3D 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_blocksiz= e), + 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_blocksiz= e), + 1); + } else { + build_append_int_noprefix(table_data, 0, 1); + } + } + /* Hart Info Node */ for (int i =3D 0; i < arch_ids->len; i++) { + len =3D 16; + int num_offsets =3D 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 offse= ts */ - 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 +=3D 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 U= ID */ + + /* Offsets */ + build_append_int_noprefix(table_data, isa_offset, 4); + if (cmo_offset) { + build_append_int_noprefix(table_data, cmo_offset, 4); + } } =20 acpi_table_end(linker, &table); --=20 2.39.2