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path: root/drivers/acpi/apei/einj.c
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Diffstat (limited to 'drivers/acpi/apei/einj.c')
-rw-r--r--drivers/acpi/apei/einj.c69
1 files changed, 48 insertions, 21 deletions
diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj.c
index fb57d03e698..a095d4f858d 100644
--- a/drivers/acpi/apei/einj.c
+++ b/drivers/acpi/apei/einj.c
@@ -33,7 +33,7 @@
#include <linux/nmi.h>
#include <linux/delay.h>
#include <linux/mm.h>
-#include <acpi/acpi.h>
+#include <asm/unaligned.h>
#include "apei-internal.h"
@@ -202,7 +202,7 @@ static void check_vendor_extension(u64 paddr,
if (!offset)
return;
- v = acpi_os_map_memory(paddr + offset, sizeof(*v));
+ v = acpi_os_map_iomem(paddr + offset, sizeof(*v));
if (!v)
return;
sbdf = v->pcie_sbdf;
@@ -210,13 +210,13 @@ static void check_vendor_extension(u64 paddr,
sbdf >> 24, (sbdf >> 16) & 0xff,
(sbdf >> 11) & 0x1f, (sbdf >> 8) & 0x7,
v->vendor_id, v->device_id, v->rev_id);
- acpi_os_unmap_memory(v, sizeof(*v));
+ acpi_os_unmap_iomem(v, sizeof(*v));
}
static void *einj_get_parameter_address(void)
{
int i;
- u64 paddrv4 = 0, paddrv5 = 0;
+ u64 pa_v4 = 0, pa_v5 = 0;
struct acpi_whea_header *entry;
entry = EINJ_TAB_ENTRY(einj_tab);
@@ -225,34 +225,32 @@ static void *einj_get_parameter_address(void)
entry->instruction == ACPI_EINJ_WRITE_REGISTER &&
entry->register_region.space_id ==
ACPI_ADR_SPACE_SYSTEM_MEMORY)
- memcpy(&paddrv4, &entry->register_region.address,
- sizeof(paddrv4));
+ pa_v4 = get_unaligned(&entry->register_region.address);
if (entry->action == ACPI_EINJ_SET_ERROR_TYPE_WITH_ADDRESS &&
entry->instruction == ACPI_EINJ_WRITE_REGISTER &&
entry->register_region.space_id ==
ACPI_ADR_SPACE_SYSTEM_MEMORY)
- memcpy(&paddrv5, &entry->register_region.address,
- sizeof(paddrv5));
+ pa_v5 = get_unaligned(&entry->register_region.address);
entry++;
}
- if (paddrv5) {
+ if (pa_v5) {
struct set_error_type_with_address *v5param;
- v5param = acpi_os_map_memory(paddrv5, sizeof(*v5param));
+ v5param = acpi_os_map_iomem(pa_v5, sizeof(*v5param));
if (v5param) {
acpi5 = 1;
- check_vendor_extension(paddrv5, v5param);
+ check_vendor_extension(pa_v5, v5param);
return v5param;
}
}
- if (param_extension && paddrv4) {
+ if (param_extension && pa_v4) {
struct einj_parameter *v4param;
- v4param = acpi_os_map_memory(paddrv4, sizeof(*v4param));
+ v4param = acpi_os_map_iomem(pa_v4, sizeof(*v4param));
if (!v4param)
return NULL;
if (v4param->reserved1 || v4param->reserved2) {
- acpi_os_unmap_memory(v4param, sizeof(*v4param));
+ acpi_os_unmap_iomem(v4param, sizeof(*v4param));
return NULL;
}
return v4param;
@@ -416,7 +414,8 @@ out:
return rc;
}
-static int __einj_error_inject(u32 type, u64 param1, u64 param2)
+static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
+ u64 param3, u64 param4)
{
struct apei_exec_context ctx;
u64 val, trigger_paddr, timeout = FIRMWARE_TIMEOUT;
@@ -446,6 +445,12 @@ static int __einj_error_inject(u32 type, u64 param1, u64 param2)
break;
}
v5param->flags = vendor_flags;
+ } else if (flags) {
+ v5param->flags = flags;
+ v5param->memory_address = param1;
+ v5param->memory_address_range = param2;
+ v5param->apicid = param3;
+ v5param->pcie_sbdf = param4;
} else {
switch (type) {
case ACPI_EINJ_PROCESSOR_CORRECTABLE:
@@ -514,11 +519,17 @@ static int __einj_error_inject(u32 type, u64 param1, u64 param2)
}
/* Inject the specified hardware error */
-static int einj_error_inject(u32 type, u64 param1, u64 param2)
+static int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
+ u64 param3, u64 param4)
{
int rc;
unsigned long pfn;
+ /* If user manually set "flags", make sure it is legal */
+ if (flags && (flags &
+ ~(SETWA_FLAGS_APICID|SETWA_FLAGS_MEM|SETWA_FLAGS_PCIE_SBDF)))
+ return -EINVAL;
+
/*
* We need extra sanity checks for memory errors.
* Other types leap directly to injection.
@@ -532,7 +543,7 @@ static int einj_error_inject(u32 type, u64 param1, u64 param2)
if (type & ACPI5_VENDOR_BIT) {
if (vendor_flags != SETWA_FLAGS_MEM)
goto inject;
- } else if (!(type & MEM_ERROR_MASK))
+ } else if (!(type & MEM_ERROR_MASK) && !(flags & SETWA_FLAGS_MEM))
goto inject;
/*
@@ -546,15 +557,18 @@ static int einj_error_inject(u32 type, u64 param1, u64 param2)
inject:
mutex_lock(&einj_mutex);
- rc = __einj_error_inject(type, param1, param2);
+ rc = __einj_error_inject(type, flags, param1, param2, param3, param4);
mutex_unlock(&einj_mutex);
return rc;
}
static u32 error_type;
+static u32 error_flags;
static u64 error_param1;
static u64 error_param2;
+static u64 error_param3;
+static u64 error_param4;
static struct dentry *einj_debug_dir;
static int available_error_type_show(struct seq_file *m, void *v)
@@ -648,7 +662,8 @@ static int error_inject_set(void *data, u64 val)
if (!error_type)
return -EINVAL;
- return einj_error_inject(error_type, error_param1, error_param2);
+ return einj_error_inject(error_type, error_flags, error_param1, error_param2,
+ error_param3, error_param4);
}
DEFINE_SIMPLE_ATTRIBUTE(error_inject_fops, NULL,
@@ -729,6 +744,10 @@ static int __init einj_init(void)
rc = -ENOMEM;
einj_param = einj_get_parameter_address();
if ((param_extension || acpi5) && einj_param) {
+ fentry = debugfs_create_x32("flags", S_IRUSR | S_IWUSR,
+ einj_debug_dir, &error_flags);
+ if (!fentry)
+ goto err_unmap;
fentry = debugfs_create_x64("param1", S_IRUSR | S_IWUSR,
einj_debug_dir, &error_param1);
if (!fentry)
@@ -737,6 +756,14 @@ static int __init einj_init(void)
einj_debug_dir, &error_param2);
if (!fentry)
goto err_unmap;
+ fentry = debugfs_create_x64("param3", S_IRUSR | S_IWUSR,
+ einj_debug_dir, &error_param3);
+ if (!fentry)
+ goto err_unmap;
+ fentry = debugfs_create_x64("param4", S_IRUSR | S_IWUSR,
+ einj_debug_dir, &error_param4);
+ if (!fentry)
+ goto err_unmap;
fentry = debugfs_create_x32("notrigger", S_IRUSR | S_IWUSR,
einj_debug_dir, &notrigger);
@@ -767,7 +794,7 @@ err_unmap:
sizeof(struct set_error_type_with_address) :
sizeof(struct einj_parameter);
- acpi_os_unmap_memory(einj_param, size);
+ acpi_os_unmap_iomem(einj_param, size);
}
apei_exec_post_unmap_gars(&ctx);
err_release:
@@ -789,7 +816,7 @@ static void __exit einj_exit(void)
sizeof(struct set_error_type_with_address) :
sizeof(struct einj_parameter);
- acpi_os_unmap_memory(einj_param, size);
+ acpi_os_unmap_iomem(einj_param, size);
}
einj_exec_ctx_init(&ctx);
apei_exec_post_unmap_gars(&ctx);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-06 11:07:05 +0000