linux-kernel - [PATCH V2 1/5] perf/x86/intel/uncore: Generic uncore_get

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Date:   Fri, 17 Nov 2023 08:39:35 -0800
From:   kan.liang@...ux.intel.com
To:     peterz@...radead.org, mingo@...hat.com,
        linux-kernel@...r.kernel.org
Cc:     eranian@...gle.com, ak@...ux.intel.com,
        Kan Liang <kan.liang@...ux.intel.com>,
        Ammy Yi <ammy.yi@...el.com>
Subject: [PATCH V2 1/5] perf/x86/intel/uncore: Generic uncore_get_uncores and MMIO format of SPR

From: Kan Liang <kan.liang@...ux.intel.com>

Factor out SPR_UNCORE_MMIO_COMMON_FORMAT which can be reused by
Granite Rapids in the following patch.

Granite Rapids have more uncore units than Sapphire Rapids. Add new
parameters to support adjustable uncore units.

No functional change.

Tested-by: Ammy Yi <ammy.yi@...el.com>
Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
---

Changes since V1:
- Add Tested-by tag

 arch/x86/events/intel/uncore_snbep.c | 34 +++++++++++++++++++---------
 1 file changed, 23 insertions(+), 11 deletions(-)

diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c
index 8250f0f59c2b..fc6587016af7 100644
--- a/arch/x86/events/intel/uncore_snbep.c
+++ b/arch/x86/events/intel/uncore_snbep.c
@@ -6079,13 +6079,16 @@ static struct uncore_event_desc spr_uncore_imc_events[] = {
 	{ /* end: all zeroes */ },
 };
 
+#define SPR_UNCORE_MMIO_COMMON_FORMAT()				\
+	SPR_UNCORE_COMMON_FORMAT(),				\
+	.ops			= &spr_uncore_mmio_ops
+
 static struct intel_uncore_type spr_uncore_imc = {
-	SPR_UNCORE_COMMON_FORMAT(),
+	SPR_UNCORE_MMIO_COMMON_FORMAT(),
 	.name			= "imc",
 	.fixed_ctr_bits		= 48,
 	.fixed_ctr		= SNR_IMC_MMIO_PMON_FIXED_CTR,
 	.fixed_ctl		= SNR_IMC_MMIO_PMON_FIXED_CTL,
-	.ops			= &spr_uncore_mmio_ops,
 	.event_descs		= spr_uncore_imc_events,
 };
 
@@ -6412,7 +6415,8 @@ static void uncore_type_customized_copy(struct intel_uncore_type *to_type,
 
 static struct intel_uncore_type **
 uncore_get_uncores(enum uncore_access_type type_id, int num_extra,
-		    struct intel_uncore_type **extra)
+		   struct intel_uncore_type **extra, int max_num_types,
+		   struct intel_uncore_type **uncores)
 {
 	struct intel_uncore_type **types, **start_types;
 	int i;
@@ -6421,9 +6425,9 @@ uncore_get_uncores(enum uncore_access_type type_id, int num_extra,
 
 	/* Only copy the customized features */
 	for (; *types; types++) {
-		if ((*types)->type_id >= UNCORE_SPR_NUM_UNCORE_TYPES)
+		if ((*types)->type_id >= max_num_types)
 			continue;
-		uncore_type_customized_copy(*types, spr_uncores[(*types)->type_id]);
+		uncore_type_customized_copy(*types, uncores[(*types)->type_id]);
 	}
 
 	for (i = 0; i < num_extra; i++, types++)
@@ -6470,7 +6474,9 @@ void spr_uncore_cpu_init(void)
 
 	uncore_msr_uncores = uncore_get_uncores(UNCORE_ACCESS_MSR,
 						UNCORE_SPR_MSR_EXTRA_UNCORES,
-						spr_msr_uncores);
+						spr_msr_uncores,
+						UNCORE_SPR_NUM_UNCORE_TYPES,
+						spr_uncores);
 
 	type = uncore_find_type_by_id(uncore_msr_uncores, UNCORE_SPR_CHA);
 	if (type) {
@@ -6552,7 +6558,9 @@ int spr_uncore_pci_init(void)
 	spr_update_device_location(UNCORE_SPR_M3UPI);
 	uncore_pci_uncores = uncore_get_uncores(UNCORE_ACCESS_PCI,
 						UNCORE_SPR_PCI_EXTRA_UNCORES,
-						spr_pci_uncores);
+						spr_pci_uncores,
+						UNCORE_SPR_NUM_UNCORE_TYPES,
+						spr_uncores);
 	return 0;
 }
 
@@ -6560,12 +6568,16 @@ void spr_uncore_mmio_init(void)
 {
 	int ret = snbep_pci2phy_map_init(0x3250, SKX_CPUNODEID, SKX_GIDNIDMAP, true);
 
-	if (ret)
-		uncore_mmio_uncores = uncore_get_uncores(UNCORE_ACCESS_MMIO, 0, NULL);
-	else {
+	if (ret) {
+		uncore_mmio_uncores = uncore_get_uncores(UNCORE_ACCESS_MMIO, 0, NULL,
+							 UNCORE_SPR_NUM_UNCORE_TYPES,
+							 spr_uncores);
+	} else {
 		uncore_mmio_uncores = uncore_get_uncores(UNCORE_ACCESS_MMIO,
 							 UNCORE_SPR_MMIO_EXTRA_UNCORES,
-							 spr_mmio_uncores);
+							 spr_mmio_uncores,
+							 UNCORE_SPR_NUM_UNCORE_TYPES,
+							 spr_uncores);
 
 		spr_uncore_imc_free_running.num_boxes = uncore_type_max_boxes(uncore_mmio_uncores, UNCORE_SPR_IMC) / 2;
 	}
-- 
2.35.1