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ACPICA: Add helper macros to extract bus/segment numbers from HEST table.

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This change adds two macros to extract the encoded bus and segment
numbers from the HEST Bus field.

Signed-off-by: Betty Dall <betty.dall@hp.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Betty Dall 2014-01-08 13:44:04 +08:00 committed by Rafael J. Wysocki
parent f0d73664c1
commit 36f3615152
1 changed files with 9 additions and 1 deletions
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10
include/acpi/actbl1.h
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@ -457,7 +457,7 @@ struct acpi_hest_aer_common {
u8 enabled;
u32 records_to_preallocate;
u32 max_sections_per_record;
u32 bus;
u32 bus; /* Bus and Segment numbers */
u16 device;
u16 function;
u16 device_control;
@ -473,6 +473,14 @@ struct acpi_hest_aer_common {
#define ACPI_HEST_FIRMWARE_FIRST (1)
#define ACPI_HEST_GLOBAL (1<<1)
/*
* Macros to access the bus/segment numbers in Bus field above:
* Bus number is encoded in bits 7:0
* Segment number is encoded in bits 23:8
*/
#define ACPI_HEST_BUS(bus) ((bus) & 0xFF)
#define ACPI_HEST_SEGMENT(bus) (((bus) >> 8) & 0xFFFF)
/* Hardware Error Notification */
struct acpi_hest_notify {