linux-kernel - [PATCH v4 03/17] ras: AEST: support different group format

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Message-Id: <20251222094351.38792-4-tianruidong@linux.alibaba.com>
Date: Mon, 22 Dec 2025 17:43:36 +0800
From: Ruidong Tian <tianruidong@...ux.alibaba.com>
To: catalin.marinas@....com,
	will@...nel.org,
	lpieralisi@...nel.org,
	guohanjun@...wei.com,
	sudeep.holla@....com,
	xueshuai@...ux.alibaba.com,
	linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	rafael@...nel.org,
	lenb@...nel.org,
	tony.luck@...el.com,
	bp@...en8.de,
	yazen.ghannam@....com,
	misono.tomohiro@...itsu.com
Cc: tianruidong@...ux.alibaba.com
Subject: [PATCH v4 03/17] ras: AEST: support different group format

Support for various AEST group formats allows for flexible configuration of
AEST node address space sizes and maximum record counts per group.

Signed-off-by: Ruidong Tian <tianruidong@...ux.alibaba.com>
---
 drivers/ras/aest/aest-core.c |  6 ++++--
 drivers/ras/aest/aest.h      | 39 +++++++++++++++++++++++++++++++++++-
 2 files changed, 42 insertions(+), 3 deletions(-)

diff --git a/drivers/ras/aest/aest-core.c b/drivers/ras/aest/aest-core.c
index c7ef6c13fd44..acebb293ac75 100644
--- a/drivers/ras/aest/aest-core.c
+++ b/drivers/ras/aest/aest-core.c
@@ -84,7 +84,7 @@ static int aest_node_set_errgsr(struct aest_device *adev,
 		return 0;
 
 	if (!(anode->interface_hdr->flags & AEST_XFACE_FLAG_ERROR_GROUP)) {
-		node->errgsr = node->base + ERXGROUP;
+		node->errgsr = node->base + node->group->errgsr_offset;
 		return 0;
 	}
 
@@ -112,10 +112,12 @@ static int aest_init_node(struct aest_device *adev, struct aest_node *node,
 		return -ENOMEM;
 	node->record_implemented = anode->record_implemented;
 	node->status_reporting = anode->status_reporting;
+	node->group = &aest_group_config[anode->interface_hdr->group_format];
 
 	address = anode->interface_hdr->address;
 	if (address) {
-		node->base = devm_ioremap(adev->dev, address, PAGE_SIZE);
+		node->base =
+			devm_ioremap(adev->dev, address, node->group->size);
 		if (!node->base)
 			return -ENOMEM;
 	}
diff --git a/drivers/ras/aest/aest.h b/drivers/ras/aest/aest.h
index d918240c3f57..3250675e99b7 100644
--- a/drivers/ras/aest/aest.h
+++ b/drivers/ras/aest/aest.h
@@ -37,7 +37,15 @@
 	dev_dbg((__record)->node->adev->dev, "%s: %s: " format, \
 		(__record)->node->name, (__record)->name, ##__VA_ARGS__)
 
-#define ERXGROUP 0xE00
+#define ERXGROUP_4K_OFFSET 0xE00
+#define ERXGROUP_16K_OFFSET 0x3800
+#define ERXGROUP_64K_OFFSET 0xE000
+#define ERXGROUP_4K_SIZE (4 * KB)
+#define ERXGROUP_16K_SIZE (16 * KB)
+#define ERXGROUP_64K_SIZE (64 * KB)
+#define ERXGROUP_4K_ERRGSR_NUM 1
+#define ERXGROUP_16K_ERRGSR_NUM 4
+#define ERXGROUP_64K_ERRGSR_NUM 14
 
 struct aest_record {
 	char *name;
@@ -57,6 +65,34 @@ struct aest_record {
 	struct aest_node *node;
 };
 
+struct aest_group {
+	int type;
+	int errgsr_num;
+	size_t size;
+	u64 errgsr_offset;
+};
+
+static const struct aest_group aest_group_config[] = {
+	[ACPI_AEST_NODE_GROUP_FORMAT_4K] = {
+		.type = ACPI_AEST_NODE_GROUP_FORMAT_4K,
+		.errgsr_num = ERXGROUP_4K_ERRGSR_NUM,
+		.size = ERXGROUP_4K_SIZE,
+		.errgsr_offset = ERXGROUP_4K_OFFSET,
+	},
+	[ACPI_AEST_NODE_GROUP_FORMAT_16K] = {
+		.type = ACPI_AEST_NODE_GROUP_FORMAT_16K,
+		.errgsr_num = ERXGROUP_16K_ERRGSR_NUM,
+		.size = ERXGROUP_16K_SIZE,
+		.errgsr_offset = ERXGROUP_16K_OFFSET,
+	},
+	[ACPI_AEST_NODE_GROUP_FORMAT_64K] = {
+		.type = ACPI_AEST_NODE_GROUP_FORMAT_64K,
+		.errgsr_num = ERXGROUP_64K_ERRGSR_NUM,
+		.size = ERXGROUP_64K_SIZE,
+		.errgsr_offset = ERXGROUP_64K_OFFSET,
+	},
+};
+
 struct aest_node {
 	char *name;
 	u8 type;
@@ -86,6 +122,7 @@ struct aest_node {
 	 */
 	unsigned long *status_reporting;
 
+	const struct aest_group *group;
 	struct aest_device *adev;
 	struct acpi_aest_node *info;
 
-- 
2.51.2.612.gdc70283dfc