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path: root/drivers/acpi/tables/tbget.c
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Diffstat (limited to 'drivers/acpi/tables/tbget.c')
-rw-r--r--drivers/acpi/tables/tbget.c65
1 files changed, 25 insertions, 40 deletions
diff --git a/drivers/acpi/tables/tbget.c b/drivers/acpi/tables/tbget.c
index 09b4ee6dfd6..99eacceff56 100644
--- a/drivers/acpi/tables/tbget.c
+++ b/drivers/acpi/tables/tbget.c
@@ -78,7 +78,7 @@ acpi_tb_get_table(struct acpi_pointer *address,
acpi_status status;
struct acpi_table_header header;
- ACPI_FUNCTION_TRACE("tb_get_table");
+ ACPI_FUNCTION_TRACE(tb_get_table);
/* Get the header in order to get signature and table size */
@@ -124,7 +124,7 @@ acpi_tb_get_table_header(struct acpi_pointer *address,
acpi_status status = AE_OK;
struct acpi_table_header *header = NULL;
- ACPI_FUNCTION_TRACE("tb_get_table_header");
+ ACPI_FUNCTION_TRACE(tb_get_table_header);
/*
* Flags contains the current processor mode (Virtual or Physical
@@ -148,6 +148,10 @@ acpi_tb_get_table_header(struct acpi_pointer *address,
sizeof(struct acpi_table_header),
(void *)&header);
if (ACPI_FAILURE(status)) {
+ ACPI_ERROR((AE_INFO,
+ "Could not map memory at %8.8X%8.8X for table header",
+ ACPI_FORMAT_UINT64(address->pointer.
+ physical)));
return_ACPI_STATUS(status);
}
@@ -198,7 +202,7 @@ acpi_tb_get_table_body(struct acpi_pointer *address,
{
acpi_status status;
- ACPI_FUNCTION_TRACE("tb_get_table_body");
+ ACPI_FUNCTION_TRACE(tb_get_table_body);
if (!table_info || !address) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
@@ -208,6 +212,7 @@ acpi_tb_get_table_body(struct acpi_pointer *address,
status = acpi_tb_table_override(header, table_info);
if (ACPI_SUCCESS(status)) {
+
/* Table was overridden by the host OS */
return_ACPI_STATUS(status);
@@ -241,7 +246,7 @@ acpi_tb_table_override(struct acpi_table_header *header,
acpi_status status;
struct acpi_pointer address;
- ACPI_FUNCTION_TRACE("tb_table_override");
+ ACPI_FUNCTION_TRACE(tb_table_override);
/*
* The OSL will examine the header and decide whether to override this
@@ -250,6 +255,7 @@ acpi_tb_table_override(struct acpi_table_header *header,
*/
status = acpi_os_table_override(header, &new_table);
if (ACPI_FAILURE(status)) {
+
/* Some severe error from the OSL, but we basically ignore it */
ACPI_EXCEPTION((AE_INFO, status,
@@ -258,6 +264,7 @@ acpi_tb_table_override(struct acpi_table_header *header,
}
if (!new_table) {
+
/* No table override */
return_ACPI_STATUS(AE_NO_ACPI_TABLES);
@@ -311,7 +318,7 @@ acpi_tb_get_this_table(struct acpi_pointer *address,
u8 allocation;
acpi_status status = AE_OK;
- ACPI_FUNCTION_TRACE("tb_get_this_table");
+ ACPI_FUNCTION_TRACE(tb_get_this_table);
/*
* Flags contains the current processor mode (Virtual or Physical
@@ -323,7 +330,7 @@ acpi_tb_get_this_table(struct acpi_pointer *address,
/* Pointer matches processor mode, copy the table to a new buffer */
- full_table = ACPI_MEM_ALLOCATE(header->length);
+ full_table = ACPI_ALLOCATE(header->length);
if (!full_table) {
ACPI_ERROR((AE_INFO,
"Could not allocate table memory for [%4.4s] length %X",
@@ -376,11 +383,12 @@ acpi_tb_get_this_table(struct acpi_pointer *address,
* Validate checksum for _most_ tables,
* even the ones whose signature we don't recognize
*/
- if (table_info->type != ACPI_TABLE_FACS) {
+ if (table_info->type != ACPI_TABLE_ID_FACS) {
status = acpi_tb_verify_table_checksum(full_table);
#if (!ACPI_CHECKSUM_ABORT)
if (ACPI_FAILURE(status)) {
+
/* Ignore the error if configuration says so */
status = AE_OK;
@@ -409,7 +417,7 @@ acpi_tb_get_this_table(struct acpi_pointer *address,
*
* PARAMETERS: table_type - one of the defined table types
* Instance - Which table of this type
- * table_ptr_loc - pointer to location to place the pointer for
+ * return_table - pointer to location to place the pointer for
* return
*
* RETURN: Status
@@ -420,57 +428,34 @@ acpi_tb_get_this_table(struct acpi_pointer *address,
acpi_status
acpi_tb_get_table_ptr(acpi_table_type table_type,
- u32 instance, struct acpi_table_header **table_ptr_loc)
+ u32 instance, struct acpi_table_header **return_table)
{
struct acpi_table_desc *table_desc;
u32 i;
- ACPI_FUNCTION_TRACE("tb_get_table_ptr");
-
- if (!acpi_gbl_DSDT) {
- return_ACPI_STATUS(AE_NO_ACPI_TABLES);
- }
+ ACPI_FUNCTION_TRACE(tb_get_table_ptr);
- if (table_type > ACPI_TABLE_MAX) {
+ if (table_type > ACPI_TABLE_ID_MAX) {
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
- /*
- * For all table types (Single/Multiple), the first
- * instance is always in the list head.
- */
- if (instance == 1) {
- /* Get the first */
-
- *table_ptr_loc = NULL;
- if (acpi_gbl_table_lists[table_type].next) {
- *table_ptr_loc =
- acpi_gbl_table_lists[table_type].next->pointer;
- }
- return_ACPI_STATUS(AE_OK);
- }
-
- /* Check for instance out of range */
+ /* Check for instance out of range of the current table count */
if (instance > acpi_gbl_table_lists[table_type].count) {
return_ACPI_STATUS(AE_NOT_EXIST);
}
- /* Walk the list to get the desired table
- * Since the if (Instance == 1) check above checked for the
- * first table, setting table_desc equal to the .Next member
- * is actually pointing to the second table. Therefore, we
- * need to walk from the 2nd table until we reach the Instance
- * that the user is looking for and return its table pointer.
+ /*
+ * Walk the list to get the desired table
+ * Note: Instance is one-based
*/
table_desc = acpi_gbl_table_lists[table_type].next;
- for (i = 2; i < instance; i++) {
+ for (i = 1; i < instance; i++) {
table_desc = table_desc->next;
}
/* We are now pointing to the requested table's descriptor */
- *table_ptr_loc = table_desc->pointer;
-
+ *return_table = table_desc->pointer;
return_ACPI_STATUS(AE_OK);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-02 13:57:31 +0000