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acpi/acpigen: add acpigen_resource_io to generate I/O resource 

Add the acpigen_resource_io helper function to generate an I/O range
resource.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I177f59b52d4dbbff0a3ceeef5fc8c7455cef9ff8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75044
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 16:18:51 +02:00
parent 5a82f0d3a9
commit 6695be65f3
2 changed files with 15 additions and 0 deletions
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14
src/acpi/acpigen.c
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@ -2251,6 +2251,20 @@ void acpigen_resource_bus_number(u16 bus_base, u16 bus_limit)
bus_limit - bus_base + 1); /* length */
}
void acpigen_resource_io(u16 io_base, u16 io_limit)
{
acpigen_resource_word(RSRC_TYPE_IO, /* res_type */
ADDR_SPACE_GENERAL_FLAG_MAX_FIXED
| ADDR_SPACE_GENERAL_FLAG_MIN_FIXED
| ADDR_SPACE_GENERAL_FLAG_DEC_POS, /* gen_flags */
IO_RSRC_FLAG_ENTIRE_RANGE, /* type_flags */
0, /* gran */
io_base, /* range_min */
io_limit, /* range_max */
0x0, /* translation */
io_limit - io_base + 1); /* length */
}
void acpigen_write_ADR(uint64_t adr)
{
acpigen_write_name_qword("_ADR", adr);

1
src/include/acpi/acpigen.h
View File

@ -694,6 +694,7 @@ 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);
void acpigen_resource_io(u16 io_base, u16 io_limit);
/* Emits Notify(namestr, value) */
void acpigen_notify(const char *namestr, int value);