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| author | Betty Dall <betty.dall@hp.com> | 2014-01-13 19:17:47 (GMT) |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2014-01-13 19:17:47 (GMT) |
| commit | 4059a31063e9bf931222af23b8a3609773bf303f (patch) | |
| tree | 552be08cb2af4b202e91145103642baf9fcd94bf | |
| parent | 3620437a73b0ba68bac9c4e8d0fc9b809efca521 (diff) | |
| download | linux-4059a31063e9bf931222af23b8a3609773bf303f.tar.xz | |
ACPICA: Add helper macros to extract bus/segment numbers from HEST table.
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>
| -rw-r--r-- | include/acpi/actbl1.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h index 556c83ee..4ec8c19 100644 --- a/include/acpi/actbl1.h +++ b/include/acpi/actbl1.h @@ -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 { |