lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ACPI: ACPICA 20060331

Browse Source 
Implemented header file support for the following
additional ACPI tables: ASF!, BOOT, CPEP, DBGP, MCFG, SPCR,
SPMI, TCPA, and WDRT. With this support, all current and
known ACPI tables are now defined in the ACPICA headers and
are available for use by device drivers and other software.

Implemented support to allow tables that contain ACPI
names with invalid characters to be loaded. Previously,
this would cause the table load to fail, but since
there are several known cases of such tables on
existing machines, this change was made to enable
ACPI support for them. Also, this matches the
behavior of the Microsoft ACPI implementation.
https://bugzilla.novell.com/show_bug.cgi?id=147621

Fixed a couple regressions introduced during the memory
optimization in the 20060317 release. The namespace
node definition required additional reorganization and
an internal datatype that had been changed to 8-bit was
restored to 32-bit. (Valery Podrezov)

Fixed a problem where a null pointer passed to
acpi_ut_delete_generic_state() could be passed through
to acpi_os_release_object which is unexpected. Such
null pointers are now trapped and ignored, matching
the behavior of the previous implementation before the
deployment of acpi_os_release_object().  (Valery Podrezov,
Fiodor Suietov)

Fixed a memory mapping leak during the deletion of
a SystemMemory operation region where a cached memory
mapping was not deleted. This became a noticeable problem
for operation regions that are defined within frequently
used control methods. (Dana Meyers)

Reorganized the ACPI table header files into two main
files: one for the ACPI tables consumed by the ACPICA core,
and another for the miscellaneous ACPI tables that are
consumed by the drivers and other software. The various
FADT definitions were merged into one common section and
three different tables (ACPI 1.0, 1.0+, and 2.0)

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Bob Moore
2006-03-31 00:00:00 -05:00
committed by Len Brown
parent 61686124f4
commit 793c2388ca
43 changed files with 1328 additions and 645 deletions
Download Patch File Download Diff File Expand all files Collapse all files

128
drivers/acpi/tables/tbutils.c
View File

@ -193,73 +193,119 @@ acpi_tb_validate_table_header(struct acpi_table_header *table_header)
/*******************************************************************************
*
* FUNCTION: acpi_tb_verify_table_checksum
* FUNCTION: acpi_tb_sum_table
*
* PARAMETERS: *table_header - ACPI table to verify
* PARAMETERS: Buffer - Buffer to sum
* Length - Size of the buffer
*
* RETURN: 8 bit checksum of table
* RETURN: 8 bit sum of buffer
*
* DESCRIPTION: Does an 8 bit checksum of table and returns status. A correct
* table should have a checksum of 0.
* DESCRIPTION: Computes an 8 bit sum of the buffer(length) and returns it.
*
******************************************************************************/
acpi_status
acpi_tb_verify_table_checksum(struct acpi_table_header * table_header)
u8 acpi_tb_sum_table(void *buffer, u32 length)
{
u8 checksum;
acpi_status status = AE_OK;
acpi_native_uint i;
u8 sum = 0;
ACPI_FUNCTION_TRACE("tb_verify_table_checksum");
/* Compute the checksum on the table */
checksum =
acpi_tb_generate_checksum(table_header, table_header->length);
/* Return the appropriate exception */
if (checksum) {
ACPI_WARNING((AE_INFO,
"Invalid checksum in table [%4.4s] (%02X, sum %02X is not zero)",
table_header->signature,
(u32) table_header->checksum, (u32) checksum));
status = AE_BAD_CHECKSUM;
if (!buffer || !length) {
return (0);
}
return_ACPI_STATUS(status);
for (i = 0; i < length; i++) {
sum = (u8) (sum + ((u8 *) buffer)[i]);
}
return (sum);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_generate_checksum
*
* PARAMETERS: Buffer - Buffer to checksum
* Length - Size of the buffer
* PARAMETERS: Table - Pointer to a valid ACPI table (with a
* standard ACPI header)
*
* RETURN: 8 bit checksum of buffer
*
* DESCRIPTION: Computes an 8 bit checksum of the buffer(length) and returns it.
* DESCRIPTION: Computes an 8 bit checksum of the table.
*
******************************************************************************/
u8 acpi_tb_generate_checksum(void *buffer, u32 length)
u8 acpi_tb_generate_checksum(struct acpi_table_header * table)
{
u8 *end_buffer;
u8 *rover;
u8 sum = 0;
u8 checksum;
if (buffer && length) {
/* Sum the entire table as-is */
/* Buffer and Length are valid */
checksum = acpi_tb_sum_table(table, table->length);
end_buffer = ACPI_ADD_PTR(u8, buffer, length);
/* Subtract off the existing checksum value in the table */
for (rover = buffer; rover < end_buffer; rover++) {
sum = (u8) (sum + *rover);
}
checksum = (u8) (checksum - table->checksum);
/* Compute the final checksum */
checksum = (u8) (0 - checksum);
return (checksum);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_set_checksum
*
* PARAMETERS: Table - Pointer to a valid ACPI table (with a
* standard ACPI header)
*
* RETURN: None. Sets the table checksum field
*
* DESCRIPTION: Computes an 8 bit checksum of the table and inserts the
* checksum into the table header.
*
******************************************************************************/
void acpi_tb_set_checksum(struct acpi_table_header *table)
{
table->checksum = acpi_tb_generate_checksum(table);
}
/*******************************************************************************
*
* FUNCTION: acpi_tb_verify_table_checksum
*
* PARAMETERS: *table_header - ACPI table to verify
*
* RETURN: 8 bit checksum of table
*
* DESCRIPTION: Generates an 8 bit checksum of table and returns and compares
* it to the existing checksum value.
*
******************************************************************************/
acpi_status
acpi_tb_verify_table_checksum(struct acpi_table_header *table_header)
{
u8 checksum;
ACPI_FUNCTION_TRACE("tb_verify_table_checksum");
/* Compute the checksum on the table */
checksum = acpi_tb_generate_checksum(table_header);
/* Checksum ok? */
if (checksum == table_header->checksum) {
return_ACPI_STATUS(AE_OK);
}
return (sum);
ACPI_WARNING((AE_INFO,
"Incorrect checksum in table [%4.4s] - is %2.2X, should be %2.2X",
table_header->signature, table_header->checksum,
checksum));
return_ACPI_STATUS(AE_BAD_CHECKSUM);
}
#ifdef ACPI_OBSOLETE_FUNCTIONS
@ -278,7 +324,7 @@ u8 acpi_tb_generate_checksum(void *buffer, u32 length)
acpi_status
acpi_tb_handle_to_object(u16 table_id,
struct acpi_table_desc ** return_table_desc)
struct acpi_table_desc **return_table_desc)
{
u32 i;
struct acpi_table_desc *table_desc;