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acpi/acpigen: add acpigen_resource_bus_number to generate bus number 

Add the acpigen_resource_bus_number helper function to generate a bus
number range resource.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: Ib1f1da3dbe823c6bc4fc30c0622653410cfbf301
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75043
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <inforichland@gmail.com>
This commit is contained in:
Felix Held 2023-05-09 16:10:35 +02:00
parent 5d71a5aabb
commit 5a82f0d3a9
2 changed files with 16 additions and 0 deletions
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14
src/acpi/acpigen.c
View File

@ -2237,6 +2237,20 @@ void acpigen_resource_qword(u16 res_type, u16 gen_flags, u16 type_flags, u64 gra
acpigen_emit_qword(length);
}
void acpigen_resource_bus_number(u16 bus_base, u16 bus_limit)
{
acpigen_resource_word(RSRC_TYPE_BUS, /* res_type */
ADDR_SPACE_GENERAL_FLAG_MAX_FIXED
| ADDR_SPACE_GENERAL_FLAG_MIN_FIXED
| ADDR_SPACE_GENERAL_FLAG_DEC_POS, /* gen_flags */
BUS_NUM_RANGE_RESOURCE_FLAG, /* type_flags */
0, /* gran */
bus_base, /* range_min */
bus_limit, /* range_max */
0x0, /* translation */
bus_limit - bus_base + 1); /* length */
}
void acpigen_write_ADR(uint64_t adr)
{
acpigen_write_name_qword("_ADR", adr);

2
src/include/acpi/acpigen.h
View File

@ -693,6 +693,8 @@ void acpigen_resource_dword(u16 res_type, u16 gen_flags, u16 type_flags,
void acpigen_resource_qword(u16 res_type, u16 gen_flags, u16 type_flags,
u64 gran, u64 range_min, u64 range_max, u64 translation, u64 length);
void acpigen_resource_bus_number(u16 bus_base, u16 bus_limit);
/* Emits Notify(namestr, value) */
void acpigen_notify(const char *namestr, int value);