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path: root/drivers/acpi/apei/apei-base.c
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Diffstat (limited to 'drivers/acpi/apei/apei-base.c')
-rw-r--r--drivers/acpi/apei/apei-base.c79
1 files changed, 38 insertions, 41 deletions
diff --git a/drivers/acpi/apei/apei-base.c b/drivers/acpi/apei/apei-base.c
index da370e1d31f4..9c84f3da7c09 100644
--- a/drivers/acpi/apei/apei-base.c
+++ b/drivers/acpi/apei/apei-base.c
@@ -1,8 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* apei-base.c - ACPI Platform Error Interface (APEI) supporting
* infrastructure
*
- * APEI allows to report errors (for example from the chipset) to the
+ * APEI allows to report errors (for example from the chipset) to
* the operating system. This improves NMI handling especially. In
* addition it supports error serialization and error injection.
*
@@ -15,15 +16,6 @@
*
* Copyright (C) 2009, Intel Corp.
* Author: Huang Ying <ying.huang@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
#include <linux/kernel.h>
@@ -33,10 +25,10 @@
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/kref.h>
-#include <linux/rculist.h>
#include <linux/interrupt.h>
#include <linux/debugfs.h>
-#include <asm/unaligned.h>
+#include <acpi/apei.h>
+#include <linux/unaligned.h>
#include "apei-internal.h"
@@ -133,12 +125,9 @@ EXPORT_SYMBOL_GPL(apei_exec_write_register);
int apei_exec_write_register_value(struct apei_exec_context *ctx,
struct acpi_whea_header *entry)
{
- int rc;
-
ctx->value = entry->value;
- rc = apei_exec_write_register(ctx, entry);
- return rc;
+ return apei_exec_write_register(ctx, entry);
}
EXPORT_SYMBOL_GPL(apei_exec_write_register_value);
@@ -178,9 +167,9 @@ rewind:
if (ip == ctx->ip) {
if (entry->instruction >= ctx->instructions ||
!ctx->ins_table[entry->instruction].run) {
- pr_warning(FW_WARN APEI_PFX
- "Invalid action table, unknown instruction type: %d\n",
- entry->instruction);
+ pr_warn(FW_WARN APEI_PFX
+ "Invalid action table, unknown instruction type: %d\n",
+ entry->instruction);
return -EINVAL;
}
run = ctx->ins_table[entry->instruction].run;
@@ -219,9 +208,9 @@ static int apei_exec_for_each_entry(struct apei_exec_context *ctx,
if (end)
*end = i;
if (ins >= ctx->instructions || !ins_table[ins].run) {
- pr_warning(FW_WARN APEI_PFX
- "Invalid action table, unknown instruction type: %d\n",
- ins);
+ pr_warn(FW_WARN APEI_PFX
+ "Invalid action table, unknown instruction type: %d\n",
+ ins);
return -EINVAL;
}
rc = func(ctx, entry, data);
@@ -295,7 +284,7 @@ struct apei_res {
};
/* Collect all resources requested, to avoid conflict */
-struct apei_resources apei_resources_all = {
+static struct apei_resources apei_resources_all = {
.iomem = LIST_HEAD_INIT(apei_resources_all.iomem),
.ioport = LIST_HEAD_INIT(apei_resources_all.ioport),
};
@@ -327,7 +316,7 @@ repeat:
if (res_ins)
list_add(&res_ins->list, res_list);
else {
- res_ins = kmalloc(sizeof(*res), GFP_KERNEL);
+ res_ins = kmalloc(sizeof(*res_ins), GFP_KERNEL);
if (!res_ins)
return -ENOMEM;
res_ins->start = start;
@@ -587,18 +576,18 @@ static int apei_check_gar(struct acpi_generic_address *reg, u64 *paddr,
space_id = reg->space_id;
*paddr = get_unaligned(&reg->address);
if (!*paddr) {
- pr_warning(FW_BUG APEI_PFX
- "Invalid physical address in GAR [0x%llx/%u/%u/%u/%u]\n",
- *paddr, bit_width, bit_offset, access_size_code,
- space_id);
+ pr_warn(FW_BUG APEI_PFX
+ "Invalid physical address in GAR [0x%llx/%u/%u/%u/%u]\n",
+ *paddr, bit_width, bit_offset, access_size_code,
+ space_id);
return -EINVAL;
}
if (access_size_code < 1 || access_size_code > 4) {
- pr_warning(FW_BUG APEI_PFX
- "Invalid access size code in GAR [0x%llx/%u/%u/%u/%u]\n",
- *paddr, bit_width, bit_offset, access_size_code,
- space_id);
+ pr_warn(FW_BUG APEI_PFX
+ "Invalid access size code in GAR [0x%llx/%u/%u/%u/%u]\n",
+ *paddr, bit_width, bit_offset, access_size_code,
+ space_id);
return -EINVAL;
}
*access_bit_width = 1UL << (access_size_code + 2);
@@ -612,19 +601,19 @@ static int apei_check_gar(struct acpi_generic_address *reg, u64 *paddr,
*access_bit_width = 64;
if ((bit_width + bit_offset) > *access_bit_width) {
- pr_warning(FW_BUG APEI_PFX
- "Invalid bit width + offset in GAR [0x%llx/%u/%u/%u/%u]\n",
- *paddr, bit_width, bit_offset, access_size_code,
- space_id);
+ pr_warn(FW_BUG APEI_PFX
+ "Invalid bit width + offset in GAR [0x%llx/%u/%u/%u/%u]\n",
+ *paddr, bit_width, bit_offset, access_size_code,
+ space_id);
return -EINVAL;
}
if (space_id != ACPI_ADR_SPACE_SYSTEM_MEMORY &&
space_id != ACPI_ADR_SPACE_SYSTEM_IO) {
- pr_warning(FW_BUG APEI_PFX
- "Invalid address space type in GAR [0x%llx/%u/%u/%u/%u]\n",
- *paddr, bit_width, bit_offset, access_size_code,
- space_id);
+ pr_warn(FW_BUG APEI_PFX
+ "Invalid address space type in GAR [0x%llx/%u/%u/%u/%u]\n",
+ *paddr, bit_width, bit_offset, access_size_code,
+ space_id);
return -EINVAL;
}
@@ -640,7 +629,15 @@ int apei_map_generic_address(struct acpi_generic_address *reg)
rc = apei_check_gar(reg, &address, &access_bit_width);
if (rc)
return rc;
- return acpi_os_map_generic_address(reg);
+
+ /* IO space doesn't need mapping */
+ if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_IO)
+ return 0;
+
+ if (!acpi_os_map_generic_address(reg))
+ return -ENXIO;
+
+ return 0;
}
EXPORT_SYMBOL_GPL(apei_map_generic_address);
generated by cgit (git 2.34.1) at 2025-12-25 08:09:33 +0000