diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c index 2df31af70d6385db4025c24d63b5e816ddac1c5d..ec9c4ca0f615bc909eb41fd559d670d6e159019a 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c @@ -98,6 +98,30 @@ static u32 slpc_get_state(struct intel_guc_slpc *slpc) return data->header.global_state; } +static int guc_action_slpc_set_param_nb(struct intel_guc *guc, u8 id, u32 value) +{ + u32 request[] = { + GUC_ACTION_HOST2GUC_PC_SLPC_REQUEST, + SLPC_EVENT(SLPC_EVENT_PARAMETER_SET, 2), + id, + value, + }; + int ret; + + ret = intel_guc_send_nb(guc, request, ARRAY_SIZE(request), 0); + + return ret > 0 ? -EPROTO : ret; +} + +static int slpc_set_param_nb(struct intel_guc_slpc *slpc, u8 id, u32 value) +{ + struct intel_guc *guc = slpc_to_guc(slpc); + + GEM_BUG_ON(id >= SLPC_MAX_PARAM); + + return guc_action_slpc_set_param_nb(guc, id, value); +} + static int guc_action_slpc_set_param(struct intel_guc *guc, u8 id, u32 value) { u32 request[] = { @@ -208,12 +232,14 @@ static int slpc_force_min_freq(struct intel_guc_slpc *slpc, u32 freq) */ with_intel_runtime_pm(&i915->runtime_pm, wakeref) { - ret = slpc_set_param(slpc, - SLPC_PARAM_GLOBAL_MIN_GT_UNSLICE_FREQ_MHZ, - freq); + /* Non-blocking request will avoid stalls */ + ret = slpc_set_param_nb(slpc, + SLPC_PARAM_GLOBAL_MIN_GT_UNSLICE_FREQ_MHZ, + freq); if (ret) - i915_probe_error(i915, "Unable to force min freq to %u: %d", - freq, ret); + drm_notice(&i915->drm, + "Failed to send set_param for min freq(%d): (%d)\n", + freq, ret); } return ret; @@ -222,6 +248,7 @@ static int slpc_force_min_freq(struct intel_guc_slpc *slpc, u32 freq) static void slpc_boost_work(struct work_struct *work) { struct intel_guc_slpc *slpc = container_of(work, typeof(*slpc), boost_work); + int err; /* * Raise min freq to boost. It's possible that @@ -231,8 +258,9 @@ static void slpc_boost_work(struct work_struct *work) */ mutex_lock(&slpc->lock); if (atomic_read(&slpc->num_waiters)) { - slpc_force_min_freq(slpc, slpc->boost_freq); - slpc->num_boosts++; + err = slpc_force_min_freq(slpc, slpc->boost_freq); + if (!err) + slpc->num_boosts++; } mutex_unlock(&slpc->lock); }