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drm/xe: Split GuC communication initialization

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Soon we will be trying to communicate with the GuC firmware very
early during VF driver probe, before we finish normal init steps.
Split GuC communication initialization code so the GuC MMIO based
communication xe_guc_mmio_send() functions will work where needed.

Cc: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://lore.kernel.org/r/20240111162051.585-1-michal.wajdeczko@intel.com
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
This commit is contained in:
Michal Wajdeczko 2024-01-11 17:20:51 +01:00
parent ef51d7542d
commit 88cbf85020
2 changed files with 18 additions and 4 deletions
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21
drivers/gpu/drm/xe/xe_guc.c
View File

@ -243,6 +243,22 @@ static void guc_fini(struct drm_device *drm, void *arg)
xe_force_wake_put(gt_to_fw(guc_to_gt(guc)), XE_FORCEWAKE_ALL);
}
/**
* xe_guc_comm_init_early - early initialization of GuC communication
* @guc: the &xe_guc to initialize
*
* Must be called prior to first MMIO communication with GuC firmware.
*/
void xe_guc_comm_init_early(struct xe_guc *guc)
{
struct xe_gt *gt = guc_to_gt(guc);
if (xe_gt_is_media_type(gt))
guc->notify_reg = MED_GUC_HOST_INTERRUPT;
else
guc->notify_reg = GUC_HOST_INTERRUPT;
}
int xe_guc_init(struct xe_guc *guc)
{
struct xe_device *xe = guc_to_xe(guc);
@ -283,10 +299,7 @@ int xe_guc_init(struct xe_guc *guc)
guc_init_params(guc);
if (xe_gt_is_media_type(gt))
guc->notify_reg = MED_GUC_HOST_INTERRUPT;
else
guc->notify_reg = GUC_HOST_INTERRUPT;
xe_guc_comm_init_early(guc);
xe_uc_fw_change_status(&guc->fw, XE_UC_FIRMWARE_LOADABLE);

1
drivers/gpu/drm/xe/xe_guc.h
View File

@ -13,6 +13,7 @@
struct drm_printer;
void xe_guc_comm_init_early(struct xe_guc *guc);
int xe_guc_init(struct xe_guc *guc);
int xe_guc_init_post_hwconfig(struct xe_guc *guc);
int xe_guc_post_load_init(struct xe_guc *guc);