diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c index eb123543392a..eb4e56e97f45 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c @@ -107,31 +107,40 @@ static int guc_action_register_ct_buffer(struct intel_guc *guc, sizeof(struct guc_ct_buffer_desc), type }; - int err; /* Can't use generic send(), CT registration must go over MMIO */ - err = intel_guc_send_mmio(guc, action, ARRAY_SIZE(action), NULL, 0); - if (err) - DRM_ERROR("CT: register %s buffer failed; err=%d\n", - guc_ct_buffer_type_to_str(type), err); + return intel_guc_send_mmio(guc, action, ARRAY_SIZE(action), NULL, 0); +} + +static int ct_register_buffer(struct intel_guc_ct *ct, u32 desc_addr, u32 type) +{ + int err = guc_action_register_ct_buffer(ct_to_guc(ct), desc_addr, type); + + if (unlikely(err)) + CT_ERROR(ct, "Failed to register %s buffer (err=%d)\n", + guc_ct_buffer_type_to_str(type), err); return err; } -static int guc_action_deregister_ct_buffer(struct intel_guc *guc, - u32 type) +static int guc_action_deregister_ct_buffer(struct intel_guc *guc, u32 type) { u32 action[] = { INTEL_GUC_ACTION_DEREGISTER_COMMAND_TRANSPORT_BUFFER, CTB_OWNER_HOST, type }; - int err; /* Can't use generic send(), CT deregistration must go over MMIO */ - err = intel_guc_send_mmio(guc, action, ARRAY_SIZE(action), NULL, 0); - if (err) - DRM_ERROR("CT: deregister %s buffer failed; err=%d\n", - guc_ct_buffer_type_to_str(type), err); + return intel_guc_send_mmio(guc, action, ARRAY_SIZE(action), NULL, 0); +} + +static int ct_deregister_buffer(struct intel_guc_ct *ct, u32 type) +{ + int err = guc_action_deregister_ct_buffer(ct_to_guc(ct), type); + + if (unlikely(err)) + CT_ERROR(ct, "Failed to deregister %s buffer (err=%d)\n", + guc_ct_buffer_type_to_str(type), err); return err; } @@ -235,18 +244,17 @@ int intel_guc_ct_enable(struct intel_guc_ct *ct) PAGE_SIZE/4); } - /* register buffers, starting wirh RECV buffer - * descriptors are in first half of the blob + /* + * Register both CT buffers starting with RECV buffer. + * Descriptors are in first half of the blob. */ - err = guc_action_register_ct_buffer(guc, - base + PAGE_SIZE/4 * CTB_RECV, - INTEL_GUC_CT_BUFFER_TYPE_RECV); + err = ct_register_buffer(ct, base + PAGE_SIZE / 4 * CTB_RECV, + INTEL_GUC_CT_BUFFER_TYPE_RECV); if (unlikely(err)) goto err_out; - err = guc_action_register_ct_buffer(guc, - base + PAGE_SIZE/4 * CTB_SEND, - INTEL_GUC_CT_BUFFER_TYPE_SEND); + err = ct_register_buffer(ct, base + PAGE_SIZE / 4 * CTB_SEND, + INTEL_GUC_CT_BUFFER_TYPE_SEND); if (unlikely(err)) goto err_deregister; @@ -255,8 +263,7 @@ int intel_guc_ct_enable(struct intel_guc_ct *ct) return 0; err_deregister: - guc_action_deregister_ct_buffer(guc, - INTEL_GUC_CT_BUFFER_TYPE_RECV); + ct_deregister_buffer(ct, INTEL_GUC_CT_BUFFER_TYPE_RECV); err_out: CT_ERROR(ct, "Failed to open open CT channel (err=%d)\n", err); return err; @@ -275,10 +282,8 @@ void intel_guc_ct_disable(struct intel_guc_ct *ct) ct->enabled = false; if (intel_guc_is_running(guc)) { - guc_action_deregister_ct_buffer(guc, - INTEL_GUC_CT_BUFFER_TYPE_SEND); - guc_action_deregister_ct_buffer(guc, - INTEL_GUC_CT_BUFFER_TYPE_RECV); + ct_deregister_buffer(ct, INTEL_GUC_CT_BUFFER_TYPE_SEND); + ct_deregister_buffer(ct, INTEL_GUC_CT_BUFFER_TYPE_RECV); } }