Proxmox-Port/linux-loongson
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson synced 2025-09-02 16:44:59 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

ACPI: APEI: EINJ: Enable EINJv2 error injections

Browse Source 
Enable injection using EINJv2 mode of operation.

[Tony: Mostly Zaid's original code. I just changed how the error ID
and syndrome bits are implemented. Also swapped out some camelcase
variable names]

Co-developed-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Zaid Alali <zaidal@os.amperecomputing.com>
Link: https://patch.msgid.link/20250617193026.637510-7-zaidal@os.amperecomputing.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Zaid Alali 2025-06-17 12:30:25 -07:00 committed by Rafael J. Wysocki
parent 90711f7bdf
commit b47610296d
1 changed files with 47 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
drivers/acpi/apei/einj-core.c
View File

@ -87,6 +87,7 @@ enum {
SETWA_FLAGS_APICID = 1,
SETWA_FLAGS_MEM = 2,
SETWA_FLAGS_PCIE_SBDF = 4,
SETWA_FLAGS_EINJV2 = 8,
};
/*
@ -181,6 +182,7 @@ bool einj_initialized __ro_after_init;
static void __iomem *einj_param;
static u32 v5param_size;
static bool is_v2;
static void einj_exec_ctx_init(struct apei_exec_context *ctx)
{
@ -507,12 +509,20 @@ static int __einj_error_trigger(u64 trigger_paddr, u32 type,
return rc;
}
static bool is_end_of_list(u8 *val)
{
for (int i = 0; i < COMPONENT_LEN; ++i) {
if (val[i] != 0xFF)
return false;
}
return true;
}
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;
int rc;
int i, rc;
einj_exec_ctx_init(&ctx);
@ -521,10 +531,10 @@ static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
return rc;
apei_exec_ctx_set_input(&ctx, type);
if (acpi5) {
struct set_error_type_with_address *v5param, v5_struct;
struct set_error_type_with_address *v5param;
v5param = &v5_struct;
memcpy_fromio(v5param, einj_param, sizeof(*v5param));
v5param = kmalloc(v5param_size, GFP_KERNEL);
memcpy_fromio(v5param, einj_param, v5param_size);
v5param->type = type;
if (type & ACPI5_VENDOR_BIT) {
switch (vendor_flags) {
@ -544,8 +554,21 @@ static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
v5param->flags = flags;
v5param->memory_address = param1;
v5param->memory_address_range = param2;
v5param->apicid = param3;
v5param->pcie_sbdf = param4;
if (is_v2) {
for (i = 0; i < max_nr_components; i++) {
if (is_end_of_list(syndrome_data[i].comp_id.acpi_id))
break;
v5param->einjv2_struct.component_arr[i].comp_id =
syndrome_data[i].comp_id;
v5param->einjv2_struct.component_arr[i].comp_synd =
syndrome_data[i].comp_synd;
}
v5param->einjv2_struct.component_arr_count = i;
} else {
v5param->apicid = param3;
v5param->pcie_sbdf = param4;
}
} else {
switch (type) {
case ACPI_EINJ_PROCESSOR_CORRECTABLE:
@ -569,7 +592,8 @@ static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
break;
}
}
memcpy_toio(einj_param, v5param, sizeof(*v5param));
memcpy_toio(einj_param, v5param, v5param_size);
kfree(v5param);
} else {
rc = apei_exec_run(&ctx, ACPI_EINJ_SET_ERROR_TYPE);
if (rc)
@ -631,10 +655,15 @@ int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2, u64 param3,
u64 base_addr, size;
/* If user manually set "flags", make sure it is legal */
if (flags && (flags &
~(SETWA_FLAGS_APICID|SETWA_FLAGS_MEM|SETWA_FLAGS_PCIE_SBDF)))
if (flags && (flags & ~(SETWA_FLAGS_APICID | SETWA_FLAGS_MEM |
SETWA_FLAGS_PCIE_SBDF | SETWA_FLAGS_EINJV2)))
return -EINVAL;
/* check if type is a valid EINJv2 error type */
if (is_v2) {
if (!(type & available_error_type_v2))
return -EINVAL;
}
/*
* We need extra sanity checks for memory errors.
* Other types leap directly to injection.
@ -743,7 +772,7 @@ static int available_error_type_show(struct seq_file *m, void *v)
if (available_error_type & einj_error_type_string[pos].mask)
seq_printf(m, "0x%08x\t%s\n", einj_error_type_string[pos].mask,
einj_error_type_string[pos].str);
if (available_error_type & ACPI65_EINJV2_SUPP) {
if ((available_error_type & ACPI65_EINJV2_SUPP) && einj_v2_enabled) {
for (int pos = 0; pos < ARRAY_SIZE(einjv2_error_type_string); pos++) {
if (available_error_type_v2 & einjv2_error_type_string[pos].mask)
seq_printf(m, "V2_0x%08x\t%s\n", einjv2_error_type_string[pos].mask,
@ -785,7 +814,7 @@ int einj_validate_error_type(u64 type)
if (tval & (tval - 1))
return -EINVAL;
if (!vendor)
if (!(type & available_error_type))
if (!(type & (available_error_type | available_error_type_v2)))
return -EINVAL;
return 0;
@ -804,9 +833,11 @@ static ssize_t error_type_set(struct file *file, const char __user *buf,
if (strncmp(einj_buf, "V2_", 3) == 0) {
if (!sscanf(einj_buf, "V2_%llx", &val))
return -EINVAL;
is_v2 = true;
} else {
if (!sscanf(einj_buf, "%llx", &val))
return -EINVAL;
is_v2 = false;
}
rc = einj_validate_error_type(val);
@ -828,6 +859,11 @@ static int error_inject_set(void *data, u64 val)
if (!error_type)
return -EINVAL;
if (is_v2)
error_flags |= SETWA_FLAGS_EINJV2;
else
error_flags &= ~SETWA_FLAGS_EINJV2;
return einj_error_inject(error_type, error_flags, error_param1, error_param2,
error_param3, error_param4);
}