diff mbox series

[RFC,v3,7/9] hw/acpi/aml-build: Add Processor hierarchy node structure

Message ID 20210516102900.28036-8-wangyanan55@huawei.com (mailing list archive)
State New, archived
Headers show
Series hw/arm/virt: Introduce cpu topology support | expand

Commit Message

Yanan Wang May 16, 2021, 10:28 a.m. UTC 
Add a generic API to build Processor hierarchy node structure (Type 0),
which is strictly consistent with descriptions in ACPI 6.2: 5.2.29.1.

This function will be used to build ACPI PPTT table for cpu topology.

Co-developed-by: Ying Fang <fangying1@huawei.com>
Signed-off-by: Ying Fang <fangying1@huawei.com>
Co-developed-by: Henglong Fan <fanhenglong@huawei.com>
Signed-off-by: Henglong Fan <fanhenglong@huawei.com>
Co-developed-by: Yanan Wang <wangyanan55@huawei.com>
Signed-off-by: Yanan Wang <wangyanan55@huawei.com>
---
 hw/acpi/aml-build.c         | 26 ++++++++++++++++++++++++++
 include/hw/acpi/aml-build.h |  4 ++++
 2 files changed, 30 insertions(+)

Comments

Andrew Jones May 17, 2021, 7:47 a.m. UTC | #1 
On Sun, May 16, 2021 at 06:28:58PM +0800, Yanan Wang wrote:
> Add a generic API to build Processor hierarchy node structure (Type 0),
> which is strictly consistent with descriptions in ACPI 6.2: 5.2.29.1.
> 
> This function will be used to build ACPI PPTT table for cpu topology.
> 
> Co-developed-by: Ying Fang <fangying1@huawei.com>
> Signed-off-by: Ying Fang <fangying1@huawei.com>
> Co-developed-by: Henglong Fan <fanhenglong@huawei.com>
> Signed-off-by: Henglong Fan <fanhenglong@huawei.com>
> Co-developed-by: Yanan Wang <wangyanan55@huawei.com>
> Signed-off-by: Yanan Wang <wangyanan55@huawei.com>
> ---
>  hw/acpi/aml-build.c         | 26 ++++++++++++++++++++++++++
>  include/hw/acpi/aml-build.h |  4 ++++
>  2 files changed, 30 insertions(+)
>

Reviewed-by: Andrew Jones <drjones@redhat.com>
diff mbox series

Patch

diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index d33ce8954a..b2c71ab88a 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -1916,6 +1916,32 @@  void build_slit(GArray *table_data, BIOSLinker *linker, MachineState *ms,
                  table_data->len - slit_start, 1, oem_id, oem_table_id);
 }
 
+/* ACPI 6.2: 5.2.29.1 Processor hierarchy node structure (Type 0) */
+void build_processor_hierarchy_node(GArray *tbl, uint32_t flags,
+                                    uint32_t parent, uint32_t id,
+                                    uint32_t *priv_rsrc, uint32_t priv_num)
+{
+    int i;
+
+    build_append_byte(tbl, 0);                 /* Type 0 - processor */
+    build_append_byte(tbl, 20 + priv_num * 4); /* Length */
+    build_append_int_noprefix(tbl, 0, 2);      /* Reserved */
+    build_append_int_noprefix(tbl, flags, 4);  /* Flags */
+    build_append_int_noprefix(tbl, parent, 4); /* Parent */
+    build_append_int_noprefix(tbl, id, 4);     /* ACPI Processor ID */
+
+    /* Number of private resources */
+    build_append_int_noprefix(tbl, priv_num, 4);
+
+    /* Private resources[N] */
+    if (priv_num > 0) {
+        assert(priv_rsrc);
+        for (i = 0; i < priv_num; i++) {
+            build_append_int_noprefix(tbl, priv_rsrc[i], 4);
+        }
+    }
+}
+
 /* build rev1/rev3/rev5.1 FADT */
 void build_fadt(GArray *tbl, BIOSLinker *linker, const AcpiFadtData *f,
                 const char *oem_id, const char *oem_table_id)
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index 471266d739..ea74b8f6ed 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -462,6 +462,10 @@  void build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base,
 void build_slit(GArray *table_data, BIOSLinker *linker, MachineState *ms,
                 const char *oem_id, const char *oem_table_id);
 
+void build_processor_hierarchy_node(GArray *tbl, uint32_t flags,
+                                    uint32_t parent, uint32_t id,
+                                    uint32_t *priv_rsrc, uint32_t priv_num);
+
 void build_fadt(GArray *tbl, BIOSLinker *linker, const AcpiFadtData *f,
                 const char *oem_id, const char *oem_table_id);