linux-kernel - [PATCH 2/4] ACPI: NUMA: Add handler for SRAT RINTC affinity structure

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Date: Wed, 31 Jan 2024 10:31:59 +0800
From: Haibo Xu <haibo1.xu@...el.com>
To: 
Cc: xiaobo55x@...il.com,
	ajones@...tanamicro.com,
	sunilvl@...tanamicro.com,
	Haibo Xu <haibo1.xu@...el.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Len Brown <lenb@...nel.org>,
	Robert Moore <robert.moore@...el.com>,
	Conor Dooley <conor.dooley@...rochip.com>,
	Guo Ren <guoren@...nel.org>,
	Anup Patel <apatel@...tanamicro.com>,
	Alexandre Ghiti <alexghiti@...osinc.com>,
	Greentime Hu <greentime.hu@...ive.com>,
	Baoquan He <bhe@...hat.com>,
	Jisheng Zhang <jszhang@...nel.org>,
	Sami Tolvanen <samitolvanen@...gle.com>,
	Clément Léger <cleger@...osinc.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Arnd Bergmann <arnd@...db.de>,
	Chen Jiahao <chenjiahao16@...wei.com>,
	James Morse <james.morse@....com>,
	Evan Green <evan@...osinc.com>,
	Samuel Holland <samuel.holland@...ive.com>,
	Ard Biesheuvel <ardb@...nel.org>,
	Tony Luck <tony.luck@...el.com>,
	Yuntao Wang <ytcoode@...il.com>,
	Alison Schofield <alison.schofield@...el.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org,
	acpica-devel@...ts.linux.dev
Subject: [PATCH 2/4] ACPI: NUMA: Add handler for SRAT RINTC affinity structure

Add RINTC affinity structure handler during parsing SRAT table.
The ARCH specific implementation will be added in next patch.

Signed-off-by: Haibo Xu <haibo1.xu@...el.com>
---
 drivers/acpi/numa/srat.c | 32 +++++++++++++++++++++++++++++++-
 include/linux/acpi.h     |  3 +++
 2 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/numa/srat.c b/drivers/acpi/numa/srat.c
index 0214518fc582..503abcf6125d 100644
--- a/drivers/acpi/numa/srat.c
+++ b/drivers/acpi/numa/srat.c
@@ -165,6 +165,19 @@ acpi_table_print_srat_entry(struct acpi_subtable_header *header)
 		}
 	}
 	break;
+
+	case ACPI_SRAT_TYPE_RINTC_AFFINITY:
+		{
+			struct acpi_srat_rintc_affinity *p =
+			    (struct acpi_srat_rintc_affinity *)header;
+			pr_debug("SRAT Processor (acpi id[0x%04x]) in proximity domain %d %s\n",
+				 p->acpi_processor_uid,
+				 p->proximity_domain,
+				 (p->flags & ACPI_SRAT_RINTC_ENABLED) ?
+				 "enabled" : "disabled");
+		}
+		break;
+
 	default:
 		pr_warn("Found unsupported SRAT entry (type = 0x%x)\n",
 			header->type);
@@ -448,6 +461,21 @@ acpi_parse_gi_affinity(union acpi_subtable_headers *header,
 }
 #endif /* defined(CONFIG_X86) || defined (CONFIG_ARM64) */
 
+static int __init
+acpi_parse_rintc_affinity(union acpi_subtable_headers *header,
+			 const unsigned long end)
+{
+	struct acpi_srat_rintc_affinity *rintc_affinity;
+
+	rintc_affinity = (struct acpi_srat_rintc_affinity *)header;
+	acpi_table_print_srat_entry(&header->common);
+
+	/* let architecture-dependent part to do it */
+	acpi_numa_rintc_affinity_init(rintc_affinity);
+
+	return 0;
+}
+
 static int __initdata parsed_numa_memblks;
 
 static int __init
@@ -501,7 +529,7 @@ int __init acpi_numa_init(void)
 
 	/* SRAT: System Resource Affinity Table */
 	if (!acpi_table_parse(ACPI_SIG_SRAT, acpi_parse_srat)) {
-		struct acpi_subtable_proc srat_proc[4];
+		struct acpi_subtable_proc srat_proc[5];
 
 		memset(srat_proc, 0, sizeof(srat_proc));
 		srat_proc[0].id = ACPI_SRAT_TYPE_CPU_AFFINITY;
@@ -512,6 +540,8 @@ int __init acpi_numa_init(void)
 		srat_proc[2].handler = acpi_parse_gicc_affinity;
 		srat_proc[3].id = ACPI_SRAT_TYPE_GENERIC_AFFINITY;
 		srat_proc[3].handler = acpi_parse_gi_affinity;
+		srat_proc[4].id = ACPI_SRAT_TYPE_RINTC_AFFINITY;
+		srat_proc[4].handler = acpi_parse_rintc_affinity;
 
 		acpi_table_parse_entries_array(ACPI_SIG_SRAT,
 					sizeof(struct acpi_table_srat),
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index b7165e52b3c6..a65273db55c6 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -269,6 +269,9 @@ acpi_numa_gicc_affinity_init(struct acpi_srat_gicc_affinity *pa) { }
 
 int acpi_numa_memory_affinity_init (struct acpi_srat_mem_affinity *ma);
 
+static inline void
+acpi_numa_rintc_affinity_init(struct acpi_srat_rintc_affinity *pa) { }
+
 #ifndef PHYS_CPUID_INVALID
 typedef u32 phys_cpuid_t;
 #define PHYS_CPUID_INVALID (phys_cpuid_t)(-1)
-- 
2.34.1