[PATCH] ACPI: APEI: EINJ: EINJV2 support added

From: Piyush Malgujar
Date: Wed May 03 2023 - 10:38:34 EST

Added changes to support EINJV2 from ACPI V6.5. This adds
new additional actions: EINJV2_SET_ERROR_TYPE and
EINJV2_GET_ERROR_TYPE which supports PCIe,processor and
memory error for single component syndrome.

Signed-off-by: Piyush Malgujar <pmalgujar@xxxxxxxxxxx>
---
drivers/acpi/apei/einj.c | 172 +++++++++++++++++++++++++++++++++++----
include/acpi/actbl1.h | 4 +-
2 files changed, 157 insertions(+), 19 deletions(-)

diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj.c
index 013eb621dc92a7c11b00577a890c06fc64453a2c..97f87ad125af79b2a6f73c0741f728cb9c799992 100644
--- a/drivers/acpi/apei/einj.c
+++ b/drivers/acpi/apei/einj.c
@@ -32,6 +32,7 @@
#define SLEEP_UNIT_MAX 5000 /* 5ms */
/* Firmware should respond within 1 seconds */
#define FIRMWARE_TIMEOUT (1 * USEC_PER_SEC)
+#define ACPI65_EINJV2_SUPP BIT(30)
#define ACPI5_VENDOR_BIT BIT(31)
#define MEM_ERROR_MASK (ACPI_EINJ_MEMORY_CORRECTABLE | \
ACPI_EINJ_MEMORY_UNCORRECTABLE | \
@@ -42,6 +43,51 @@
*/
static int acpi5;

+/*
+ * ACPI version 6.5 provides a EINJV2_SET_ERROR_TYPE action.
+ */
+static int einjv2_supp;
+
+struct syndrome_array {
+ union {
+ u32 acpi_id;
+ u32 device_id;
+ u32 pcie_sbdf;
+ u8 fru_id[16];
+ } comp_id;
+ union {
+ u32 proc_synd;
+ u32 mem_synd;
+ u32 pcie_synd;
+ u8 vendor_synd[16];
+ } comp_synd;
+};
+
+struct einjv2_set_error_type {
+ u32 type;
+ u8 type_code;
+ u8 flags[3];
+ u32 length;
+ u32 severity;
+ u64 memory_address;
+ u64 memory_address_range;
+ u32 syndrome_count;
+ struct syndrome_array array[0];
+};
+
+enum {
+ EINJV2_PROCESSOR_ERROR = 0x1,
+ EINJV2_MEMORY_ERROR = 0x2,
+ EINJV2_PCIE_ERROR = 0x4,
+};
+
+enum {
+ EINJV2_FLAG_ADD_VALID = 0x1,
+ EINJV2_FLAG_ADD_RANGE_VALID = 0x2,
+ EINJV2_FLAG_SEVERITY_VALID = 0x4,
+ EINJV2_FLAG_COMP_VALID = 0x8,
+};
+
struct set_error_type_with_address {
u32 type;
u32 vendor_extension;
@@ -155,6 +201,13 @@ static int __einj_get_available_error_type(u32 *type)
return rc;
*type = apei_exec_ctx_get_output(&ctx);

+ if (*type & ACPI65_EINJV2_SUPP) {
+ rc = apei_exec_run(&ctx, ACPI_EINJV2_GET_ERROR_TYPE);
+ if (rc)
+ return rc;
+ *type = apei_exec_ctx_get_output(&ctx);
+ }
+
return 0;
}

@@ -205,7 +258,7 @@ static void check_vendor_extension(u64 paddr,
static void *einj_get_parameter_address(void)
{
int i;
- u64 pa_v4 = 0, pa_v5 = 0;
+ u64 pa_v4 = 0, pa_v5 = 0, pa_v65 = 0;
struct acpi_whea_header *entry;

entry = EINJ_TAB_ENTRY(einj_tab);
@@ -220,8 +273,22 @@ static void *einj_get_parameter_address(void)
entry->register_region.space_id ==
ACPI_ADR_SPACE_SYSTEM_MEMORY)
pa_v5 = get_unaligned(&entry->register_region.address);
+ if (entry->action == ACPI_EINJV2_SET_ERROR_TYPE &&
+ entry->instruction == ACPI_EINJ_WRITE_REGISTER &&
+ entry->register_region.space_id ==
+ ACPI_ADR_SPACE_SYSTEM_MEMORY)
+ pa_v65 = get_unaligned(&entry->register_region.address);
entry++;
}
+ if (pa_v65) {
+ struct einjv2_set_error_type *v65param;
+
+ v65param = acpi_os_map_iomem(pa_v65, sizeof(*v65param));
+ if (v65param) {
+ einjv2_supp = 1;
+ return v65param;
+ }
+ }
if (pa_v5) {
struct set_error_type_with_address *v5param;

@@ -356,7 +423,9 @@ static int __einj_error_trigger(u64 trigger_paddr, u32 type,
* This will cause resource conflict with regular memory. So
* remove it from trigger table resources.
*/
- if ((param_extension || acpi5) && (type & MEM_ERROR_MASK) && param2) {
+ if ((param_extension || acpi5 || einjv2_supp) &&
+ ((einjv2_supp && (type & EINJV2_MEMORY_ERROR)) ||
+ type & MEM_ERROR_MASK) && param2) {
struct apei_resources addr_resources;

apei_resources_init(&addr_resources);
@@ -402,7 +471,7 @@ static int __einj_error_trigger(u64 trigger_paddr, u32 type,
}

static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
- u64 param3, u64 param4)
+ u64 param3, u64 param4, u64 param5)
{
struct apei_exec_context ctx;
u64 val, trigger_paddr, timeout = FIRMWARE_TIMEOUT;
@@ -414,7 +483,46 @@ static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
if (rc)
return rc;
apei_exec_ctx_set_input(&ctx, type);
- if (acpi5) {
+
+ if (einjv2_supp) {
+ struct einjv2_set_error_type *v65param = einj_param;
+
+ v65param->type = type;
+ v65param->flags[0] = flags;
+
+ if (v65param->flags[0] & EINJV2_FLAG_COMP_VALID) {
+ switch (v65param->type) {
+ case EINJV2_PROCESSOR_ERROR:
+ v65param->array[0].comp_id.acpi_id = param1;
+ v65param->array[0].comp_synd.proc_synd = param2;
+ break;
+ case EINJV2_MEMORY_ERROR:
+ v65param->array[0].comp_id.device_id = param3;
+ v65param->array[0].comp_synd.mem_synd = param4;
+ break;
+ case EINJV2_PCIE_ERROR:
+ v65param->array[0].comp_id.pcie_sbdf = param1;
+ v65param->array[0].comp_synd.pcie_synd = param2;
+ break;
+ }
+ }
+
+ if (v65param->type & EINJV2_MEMORY_ERROR) {
+ if (v65param->flags[0] & EINJV2_FLAG_ADD_VALID)
+ v65param->memory_address = param1;
+ if (v65param->flags[0] & EINJV2_FLAG_ADD_RANGE_VALID)
+ v65param->memory_address_range = param2;
+ if (v65param->flags[0] & EINJV2_FLAG_SEVERITY_VALID)
+ v65param->severity = param5;
+ } else {
+ if (v65param->flags[0] & EINJV2_FLAG_SEVERITY_VALID)
+ v65param->severity = param3;
+ }
+ v65param->syndrome_count = 1;
+ v65param->length = sizeof(struct einjv2_set_error_type) +
+ ((v65param->syndrome_count) *
+ sizeof(struct syndrome_array));
+ } else if (acpi5) {
struct set_error_type_with_address *v5param = einj_param;

v5param->type = type;
@@ -514,15 +622,23 @@ static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,

/* Inject the specified hardware error */
static int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
- u64 param3, u64 param4)
+ u64 param3, u64 param4, u64 param5)
{
int rc;
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)))
- return -EINVAL;
+ if (einjv2_supp) {
+ if (flags && (flags &
+ ~(EINJV2_FLAG_ADD_VALID | EINJV2_FLAG_ADD_RANGE_VALID |
+ EINJV2_FLAG_SEVERITY_VALID | EINJV2_FLAG_COMP_VALID)))
+ return -EINVAL;
+ } else {
+ if (flags && (flags &
+ ~(SETWA_FLAGS_APICID | SETWA_FLAGS_MEM |
+ SETWA_FLAGS_PCIE_SBDF)))
+ return -EINVAL;
+ }

/*
* We need extra sanity checks for memory errors.
@@ -530,11 +646,13 @@ static int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,
*/

/* ensure param1/param2 existed */
- if (!(param_extension || acpi5))
+ if (!(param_extension || acpi5 || einjv2_supp))
goto inject;

/* ensure injection is memory related */
- if (type & ACPI5_VENDOR_BIT) {
+ if (einjv2_supp && !(type & EINJV2_MEMORY_ERROR)) {
+ goto inject;
+ } else if (type & ACPI5_VENDOR_BIT) {
if (vendor_flags != SETWA_FLAGS_MEM)
goto inject;
} else if (!(type & MEM_ERROR_MASK) && !(flags & SETWA_FLAGS_MEM))
@@ -564,7 +682,7 @@ static int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2,

inject:
mutex_lock(&einj_mutex);
- rc = __einj_error_inject(type, flags, param1, param2, param3, param4);
+ rc = __einj_error_inject(type, flags, param1, param2, param3, param4, param5);
mutex_unlock(&einj_mutex);

return rc;
@@ -576,7 +694,15 @@ static u64 error_param1;
static u64 error_param2;
static u64 error_param3;
static u64 error_param4;
+static u64 error_param5;
static struct dentry *einj_debug_dir;
+
+static const char * const einjv2_error_type_string[] = {
+ "0x00000001\tEINJV2 Processor Error\n",
+ "0x00000002\tEINJV2 Memory Error\n",
+ "0x00000004\tEINJV2 PCI Express Error\n",
+};
+
static const char * const einj_error_type_string[] = {
"0x00000001\tProcessor Correctable\n",
"0x00000002\tProcessor Uncorrectable non-fatal\n",
@@ -600,15 +726,22 @@ static const char * const einj_error_type_string[] = {

static int available_error_type_show(struct seq_file *m, void *v)
{
- int rc;
+ int rc, pos;
u32 available_error_type = 0;

rc = einj_get_available_error_type(&available_error_type);
if (rc)
return rc;
- for (int pos = 0; pos < ARRAY_SIZE(einj_error_type_string); pos++)
- if (available_error_type & BIT(pos))
- seq_puts(m, einj_error_type_string[pos]);
+
+ if (einjv2_supp) {
+ for (pos = 0; pos < ARRAY_SIZE(einjv2_error_type_string); pos++)
+ if (available_error_type & BIT(pos))
+ seq_puts(m, einjv2_error_type_string[pos]);
+ } else {
+ for (pos = 0; pos < ARRAY_SIZE(einj_error_type_string); pos++)
+ if (available_error_type & BIT(pos))
+ seq_puts(m, einj_error_type_string[pos]);
+ }

return 0;
}
@@ -662,8 +795,9 @@ static int error_inject_set(void *data, u64 val)
if (!error_type)
return -EINVAL;

- return einj_error_inject(error_type, error_flags, error_param1, error_param2,
- error_param3, error_param4);
+ return einj_error_inject(error_type, error_flags, error_param1,
+ error_param2, error_param3, error_param4,
+ error_param5);
}

DEFINE_DEBUGFS_ATTRIBUTE(error_inject_fops, NULL, error_inject_set, "%llu\n");
@@ -743,7 +877,7 @@ static int __init einj_init(void)
}

einj_param = einj_get_parameter_address();
- if ((param_extension || acpi5) && einj_param) {
+ if ((param_extension || acpi5 || einjv2_supp) && einj_param) {
debugfs_create_x32("flags", S_IRUSR | S_IWUSR, einj_debug_dir,
&error_flags);
debugfs_create_x64("param1", S_IRUSR | S_IWUSR, einj_debug_dir,
@@ -754,6 +888,8 @@ static int __init einj_init(void)
&error_param3);
debugfs_create_x64("param4", S_IRUSR | S_IWUSR, einj_debug_dir,
&error_param4);
+ debugfs_create_x64("param5", S_IRUSR | S_IWUSR, einj_debug_dir,
+ &error_param5);
debugfs_create_x32("notrigger", S_IRUSR | S_IWUSR,
einj_debug_dir, &notrigger);
}
diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index 58b0490a2ad12e26cab30209e461429a1f5dec30..de89c18f3443489683c9aafaf6a894e60d98374b 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -1026,7 +1026,9 @@ enum acpi_einj_actions {
ACPI_EINJ_GET_COMMAND_STATUS = 7,
ACPI_EINJ_SET_ERROR_TYPE_WITH_ADDRESS = 8,
ACPI_EINJ_GET_EXECUTE_TIMINGS = 9,
- ACPI_EINJ_ACTION_RESERVED = 10, /* 10 and greater are reserved */
+ ACPI_EINJV2_SET_ERROR_TYPE = 0x10,
+ ACPI_EINJV2_GET_ERROR_TYPE = 0x11,
+ ACPI_EINJ_ACTION_RESERVED = 0x12, /* 12 and greater are reserved */
ACPI_EINJ_TRIGGER_ERROR = 0xFF /* Except for this value */
};

--
2.17.1