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Merge branch 'acpica-cherry-pick' into release

This commit is contained in:
Len Brown 2010-06-12 00:56:15 -04:00
parent a48ecc7718 b681f7d9ab
commit d9a799d197
7 changed files with 43 additions and 1 deletions
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4
drivers/acpi/acpica/acconfig.h
View File

@ -119,6 +119,10 @@
#define ACPI_MAX_LOOP_ITERATIONS 0xFFFF
/* Maximum sleep allowed via Sleep() operator */
#define ACPI_MAX_SLEEP 20000 /* Two seconds */
/******************************************************************************
*
* ACPI Specification constants (Do not change unless the specification changes)

8
drivers/acpi/acpica/acglobal.h
View File

@ -125,6 +125,14 @@ u8 ACPI_INIT_GLOBAL(acpi_gbl_enable_aml_debug_object, FALSE);
*/
u8 ACPI_INIT_GLOBAL(acpi_gbl_copy_dsdt_locally, FALSE);
/*
* Optionally truncate I/O addresses to 16 bits. Provides compatibility
* with other ACPI implementations. NOTE: During ACPICA initialization,
* this value is set to TRUE if any Windows OSI strings have been
* requested by the BIOS.
*/
u8 ACPI_INIT_GLOBAL(acpi_gbl_truncate_io_addresses, FALSE);
/* acpi_gbl_FADT is a local copy of the FADT, converted to a common format. */
struct acpi_table_fadt acpi_gbl_FADT;

8
drivers/acpi/acpica/exsystem.c
View File

@ -201,6 +201,14 @@ acpi_status acpi_ex_system_do_sleep(u64 how_long)
acpi_ex_relinquish_interpreter();
/*
* For compatibility with other ACPI implementations and to prevent
* accidental deep sleeps, limit the sleep time to something reasonable.
*/
if (how_long > ACPI_MAX_SLEEP) {
how_long = ACPI_MAX_SLEEP;
}
acpi_os_sleep(how_long);
/* And now we must get the interpreter again */

12
drivers/acpi/acpica/hwvalid.c
View File

@ -222,6 +222,12 @@ acpi_status acpi_hw_read_port(acpi_io_address address, u32 *value, u32 width)
u32 one_byte;
u32 i;
/* Truncate address to 16 bits if requested */
if (acpi_gbl_truncate_io_addresses) {
address &= ACPI_UINT16_MAX;
}
/* Validate the entire request and perform the I/O */
status = acpi_hw_validate_io_request(address, width);
@ -279,6 +285,12 @@ acpi_status acpi_hw_write_port(acpi_io_address address, u32 value, u32 width)
acpi_status status;
u32 i;
/* Truncate address to 16 bits if requested */
if (acpi_gbl_truncate_io_addresses) {
address &= ACPI_UINT16_MAX;
}
/* Validate the entire request and perform the I/O */
status = acpi_hw_validate_io_request(address, width);

9
drivers/acpi/acpica/nsinit.c
View File

@ -193,6 +193,15 @@ acpi_status acpi_ns_initialize_devices(void)
acpi_ns_init_one_device, NULL, &info,
NULL);
/*
* Any _OSI requests should be completed by now. If the BIOS has
* requested any Windows OSI strings, we will always truncate
* I/O addresses to 16 bits -- for Windows compatibility.
*/
if (acpi_gbl_osi_data >= ACPI_OSI_WIN_2000) {
acpi_gbl_truncate_io_addresses = TRUE;
}
ACPI_FREE(info.evaluate_info);
if (ACPI_FAILURE(status)) {
goto error_exit;

2
include/acpi/acexcep.h
View File

@ -212,7 +212,7 @@ char const *acpi_gbl_exception_names_env[] = {
"AE_NO_GLOBAL_LOCK",
"AE_ABORT_METHOD",
"AE_SAME_HANDLER",
"AE_WAKE_ONLY_GPE",
"AE_NO_HANDLER",
"AE_OWNER_ID_LIMIT"
};

1
include/acpi/acpixf.h
View File

@ -69,6 +69,7 @@ extern acpi_name acpi_gbl_trace_method_name;
extern u32 acpi_gbl_trace_flags;
extern u8 acpi_gbl_enable_aml_debug_object;
extern u8 acpi_gbl_copy_dsdt_locally;
extern u8 acpi_gbl_truncate_io_addresses;
extern u32 acpi_current_gpe_count;
extern struct acpi_table_fadt acpi_gbl_FADT;