1 files changed, 57 insertions, 20 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c
index 37930629edc5..271c567242ab 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_packet_manager.c
@@ -28,6 +28,10 @@
 #include "kfd_kernel_queue.h"
 #include "kfd_priv.h"
 
+#define OVER_SUBSCRIPTION_PROCESS_COUNT (1 << 0)
+#define OVER_SUBSCRIPTION_COMPUTE_QUEUE_COUNT (1 << 1)
+#define OVER_SUBSCRIPTION_GWS_QUEUE_COUNT (1 << 2)
+
 static inline void inc_wptr(unsigned int *wptr, unsigned int increment_bytes,
 				unsigned int buffer_size_bytes)
 {
@@ -40,7 +44,7 @@ static inline void inc_wptr(unsigned int *wptr, unsigned int increment_bytes,
 
 static void pm_calc_rlib_size(struct packet_manager *pm,
 				unsigned int *rlib_size,
-				bool *over_subscription)
+				int *over_subscription)
 {
 	unsigned int process_count, queue_count, compute_queue_count, gws_queue_count;
 	unsigned int map_queue_size;
@@ -58,17 +62,20 @@ static void pm_calc_rlib_size(struct packet_manager *pm,
 	 * hws_max_conc_proc has been done in
 	 * kgd2kfd_device_init().
 	 */
-	*over_subscription = false;
+	*over_subscription = 0;
 
 	if (node->max_proc_per_quantum > 1)
 		max_proc_per_quantum = node->max_proc_per_quantum;
 
-	if ((process_count > max_proc_per_quantum) ||
-	    compute_queue_count > get_cp_queues_num(pm->dqm) ||
-	    gws_queue_count > 1) {
-		*over_subscription = true;
+	if (process_count > max_proc_per_quantum)
+		*over_subscription |= OVER_SUBSCRIPTION_PROCESS_COUNT;
+	if (compute_queue_count > get_cp_queues_num(pm->dqm))
+		*over_subscription |= OVER_SUBSCRIPTION_COMPUTE_QUEUE_COUNT;
+	if (gws_queue_count > 1)
+		*over_subscription |= OVER_SUBSCRIPTION_GWS_QUEUE_COUNT;
+
+	if (*over_subscription)
 		dev_dbg(dev, "Over subscribed runlist\n");
-	}
 
 	map_queue_size = pm->pmf->map_queues_size;
 	/* calculate run list ib allocation size */
@@ -89,7 +96,7 @@ static int pm_allocate_runlist_ib(struct packet_manager *pm,
 				unsigned int **rl_buffer,
 				uint64_t *rl_gpu_buffer,
 				unsigned int *rl_buffer_size,
-				bool *is_over_subscription)
+				int *is_over_subscription)
 {
 	struct kfd_node *node = pm->dqm->dev;
 	struct device *dev = node->adev->dev;
@@ -134,7 +141,7 @@ static int pm_create_runlist_ib(struct packet_manager *pm,
 	struct qcm_process_device *qpd;
 	struct queue *q;
 	struct kernel_queue *kq;
-	bool is_over_subscription;
+	int is_over_subscription;
 
 	rl_wptr = retval = processes_mapped = 0;
 
@@ -213,15 +220,20 @@ static int pm_create_runlist_ib(struct packet_manager *pm,
 
 	if (is_over_subscription) {
 		if (!pm->is_over_subscription)
-			dev_warn(
-				dev,
-				"Runlist is getting oversubscribed. Expect reduced ROCm performance.\n");
+			dev_warn(dev, "Runlist is getting oversubscribed due to%s%s%s. Expect reduced ROCm performance.\n",
+				 is_over_subscription & OVER_SUBSCRIPTION_PROCESS_COUNT ?
+				 " too many processes." : "",
+				 is_over_subscription & OVER_SUBSCRIPTION_COMPUTE_QUEUE_COUNT ?
+				 " too many queues." : "",
+				 is_over_subscription & OVER_SUBSCRIPTION_GWS_QUEUE_COUNT ?
+				 " multiple processes using cooperative launch." : "");
+
 		retval = pm->pmf->runlist(pm, &rl_buffer[rl_wptr],
 					*rl_gpu_addr,
 					alloc_size_bytes / sizeof(uint32_t),
 					true);
 	}
-	pm->is_over_subscription = is_over_subscription;
+	pm->is_over_subscription = !!is_over_subscription;
 
 	for (i = 0; i < alloc_size_bytes / sizeof(uint32_t); i++)
 		pr_debug("0x%2X ", rl_buffer[i]);
@@ -248,7 +260,8 @@ int pm_init(struct packet_manager *pm, struct device_queue_manager *dqm)
 	default:
 		if (KFD_GC_VERSION(dqm->dev) == IP_VERSION(9, 4, 2) ||
 		    KFD_GC_VERSION(dqm->dev) == IP_VERSION(9, 4, 3) ||
-		    KFD_GC_VERSION(dqm->dev) == IP_VERSION(9, 4, 4))
+		    KFD_GC_VERSION(dqm->dev) == IP_VERSION(9, 4, 4) ||
+		    KFD_GC_VERSION(dqm->dev) == IP_VERSION(9, 5, 0))
 			pm->pmf = &kfd_aldebaran_pm_funcs;
 		else if (KFD_GC_VERSION(dqm->dev) >= IP_VERSION(9, 0, 1))
 			pm->pmf = &kfd_v9_pm_funcs;
@@ -383,14 +396,33 @@ out:
 	return retval;
 }
 
-int pm_update_grace_period(struct packet_manager *pm, uint32_t grace_period)
+/* pm_config_dequeue_wait_counts: Configure dequeue timer Wait Counts
+ *  by writing to CP_IQ_WAIT_TIME2 registers.
+ *
+ *  @cmd: See emum kfd_config_dequeue_wait_counts_cmd definition
+ *  @value: Depends on the cmd. This parameter is unused for
+ *    KFD_DEQUEUE_WAIT_INIT and KFD_DEQUEUE_WAIT_RESET. For
+ *    KFD_DEQUEUE_WAIT_SET_SCH_WAVE it holds value to be set
+ *
+ */
+int pm_config_dequeue_wait_counts(struct packet_manager *pm,
+		enum kfd_config_dequeue_wait_counts_cmd cmd,
+		uint32_t value)
 {
 	struct kfd_node *node = pm->dqm->dev;
 	struct device *dev = node->adev->dev;
 	int retval = 0;
 	uint32_t *buffer, size;
 
-	size = pm->pmf->set_grace_period_size;
+	if (!pm->pmf->config_dequeue_wait_counts ||
+	    !pm->pmf->config_dequeue_wait_counts_size)
+		return 0;
+
+	if (cmd == KFD_DEQUEUE_WAIT_INIT && (KFD_GC_VERSION(pm->dqm->dev) < IP_VERSION(9, 4, 1) ||
+	   KFD_GC_VERSION(pm->dqm->dev) >= IP_VERSION(10, 0, 0)))
+		return 0;
+
+	size = pm->pmf->config_dequeue_wait_counts_size;
 
 	mutex_lock(&pm->lock);
 
@@ -406,13 +438,18 @@ int pm_update_grace_period(struct packet_manager *pm, uint32_t grace_period)
 			goto out;
 		}
 
-		retval = pm->pmf->set_grace_period(pm, buffer, grace_period);
-		if (!retval)
+		retval = pm->pmf->config_dequeue_wait_counts(pm, buffer,
+							     cmd, value);
+		if (!retval) {
 			retval = kq_submit_packet(pm->priv_queue);
-		else
+
+			/* If default value is modified, cache that in dqm->wait_times */
+			if (!retval && cmd == KFD_DEQUEUE_WAIT_INIT)
+				update_dqm_wait_times(pm->dqm);
+		} else {
 			kq_rollback_packet(pm->priv_queue);
+		}
 	}
-
 out:
 	mutex_unlock(&pm->lock);
 	return retval;