[PATCH v1 09/20] ACPICA: Allow PCC Data Type in MCTP resource

Rafael J. Wysocki
2024-08-29T18:44:29Z

From: Adam Young <ayoung@amperecomputing.com>

ACPICA commit f0776a465cc2c20393bec534c16bdee4a78f7bb7

Explicitly allow QWord address space description type
to be 0xA to indicate it refers to a Platform Communication channel
IAW ACPI_ECR_PCC_DESCRIPTORS_CF_V2

An entity in a DSDT or in SSDTs that requires
a platform communication channel table (PCCT) entry
to communicate with a remote service will have a single
value that is the index of the entry in the PCCT.

This data type with have a resource_type value of 0xA.

This value indicates that the type shares the same
footprint as a Dword_space section.

Link: https://bugzilla.tianocore.org/show_bug.cgi?id=4594
Link: https://github.com/acpica/acpica/commit/f0776a46
Signed-off-by: Adam Young <ayoung@amperecomputing.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
drivers/acpi/acpica/rsaddr.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/acpica/rsaddr.c b/drivers/acpi/acpica/rsaddr.c
index fff48001d7ef..27384ee245f0 100644
--- a/drivers/acpi/acpica/rsaddr.c
+++ b/drivers/acpi/acpica/rsaddr.c
@@ -282,7 +282,8 @@ acpi_rs_get_address_common(struct acpi_resource *resource,

/* Validate the Resource Type */

- if ((address.resource_type > 2) && (address.resource_type < 0xC0)) {
+ if ((address.resource_type > 2) &&
+ (address.resource_type < 0xC0) && (address.resource_type != 0x0A)) {
return (FALSE);
}

--
2.43.0