Commit 981daf10 authored by Michal Wajdeczko's avatar Michal Wajdeczko
Browse files

drm/xe: Allow to stub lookup for graphics and media IP 



In upcoming patch we will want to replace lookup code during the
test to relax the strict match that we use in production.

Signed-off-by: default avatarMichal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: default avatarLucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250829171922.572-2-michal.wajdeczko@intel.com
parent edb1745f

drivers/gpu/drm/xe/xe_pci.c

+22 −16
Original line number Diff line number Diff line
@@ -510,6 +510,26 @@ static void read_gmdid(struct xe_device *xe, enum xe_gmdid_type type, u32 *ver, 
	*revid = REG_FIELD_GET(GMD_ID_REVID, val);

}



static const struct xe_ip *find_graphics_ip(unsigned int verx100)

{

	KUNIT_STATIC_STUB_REDIRECT(find_graphics_ip, verx100);



	for (int i = 0; i < ARRAY_SIZE(graphics_ips); i++)

		if (graphics_ips[i].verx100 == verx100)

			return &graphics_ips[i];

	return NULL;

}



static const struct xe_ip *find_media_ip(unsigned int verx100)

{

	KUNIT_STATIC_STUB_REDIRECT(find_media_ip, verx100);



	for (int i = 0; i < ARRAY_SIZE(media_ips); i++)

		if (media_ips[i].verx100 == verx100)

			return &media_ips[i];

	return NULL;

}



/*

 * Read IP version from hardware and select graphics/media IP descriptors

 * based on the result.
@@ -527,14 +547,7 @@ static void handle_gmdid(struct xe_device *xe, 


	read_gmdid(xe, GMDID_GRAPHICS, &ver, graphics_revid);



	for (int i = 0; i < ARRAY_SIZE(graphics_ips); i++) {

		if (ver == graphics_ips[i].verx100) {

			*graphics_ip = &graphics_ips[i];



			break;

		}

	}



	*graphics_ip = find_graphics_ip(ver);

	if (!*graphics_ip) {

		drm_err(&xe->drm, "Hardware reports unknown graphics version %u.%02u\n",

			ver / 100, ver % 100);
@@ -545,14 +558,7 @@ static void handle_gmdid(struct xe_device *xe, 
	if (ver == 0)

		return;



	for (int i = 0; i < ARRAY_SIZE(media_ips); i++) {

		if (ver == media_ips[i].verx100) {

			*media_ip = &media_ips[i];



			break;

		}

	}



	*media_ip = find_media_ip(ver);

	if (!*media_ip) {

		drm_err(&xe->drm, "Hardware reports unknown media version %u.%02u\n",

			ver / 100, ver % 100);