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

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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: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250829171922.572-2-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko
2025-08-29 19:19:16 +02:00
parent edb1745fc6
commit 981daf1046
1 changed files with 22 additions and 16 deletions
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38
drivers/gpu/drm/xe/xe_pci.c
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@@ -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);