accel/ivpu: Add turbo flag to the DRM_IVPU_CMDQ_CREATE ioctl

Introduce a new parameter to the DRM_IVPU_CMDQ_CREATE ioctl,
enabling turbo mode for jobs submitted via the command queue.
Turbo mode allows jobs to run at higher frequencies,
potentially improving performance for demanding workloads.

Also adds the IVPU_TEST_MODE_TURBO_DISABLE flag to allow test
mode to explicitly disable turbo mode requested by the application.
The IVPU_TEST_MODE_TURBO mode has been renamed to
IVPU_TEST_MODE_TURBO_ENABLE for clarity and consistency.

Signed-off-by: Andrzej Kacprowski <[email protected]>
Signed-off-by: Maciej Falkowski <[email protected]>
Reviewed-by: Jeff Hugo <[email protected]>
Signed-off-by: Jacek Lawrynowicz <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: akacprow

drivers/accel/ivpu/ivpu_drv.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (C) 2020-2024 Intel Corporation
+ * Copyright (C) 2020-2025 Intel Corporation
  */
 
 #ifndef __IVPU_DRV_H__
@@ -209,10 +209,11 @@ extern bool ivpu_force_snoop;
 #define IVPU_TEST_MODE_D0I3_MSG_ENABLE    BIT(5)
 #define IVPU_TEST_MODE_MIP_DISABLE        BIT(6)
 #define IVPU_TEST_MODE_DISABLE_TIMEOUTS   BIT(8)
-#define IVPU_TEST_MODE_TURBO		  BIT(9)
-#define IVPU_TEST_MODE_CLK_RELINQ_DISABLE BIT(10)
-#define IVPU_TEST_MODE_CLK_RELINQ_ENABLE  BIT(11)
-#define IVPU_TEST_MODE_D0I2_DISABLE       BIT(12)
+#define IVPU_TEST_MODE_TURBO_ENABLE       BIT(9)
+#define IVPU_TEST_MODE_TURBO_DISABLE      BIT(10)
+#define IVPU_TEST_MODE_CLK_RELINQ_DISABLE BIT(11)
+#define IVPU_TEST_MODE_CLK_RELINQ_ENABLE  BIT(12)
+#define IVPU_TEST_MODE_D0I2_DISABLE       BIT(13)
 extern int ivpu_test_mode;
 
 struct ivpu_file_priv *ivpu_file_priv_get(struct ivpu_file_priv *file_priv);

drivers/accel/ivpu/ivpu_job.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (C) 2020-2024 Intel Corporation
+ * Copyright (C) 2020-2025 Intel Corporation
  */
 
 #include <drm/drm_file.h>
@@ -100,15 +100,51 @@ static struct ivpu_cmdq *ivpu_cmdq_alloc(struct ivpu_file_priv *file_priv)
 	return NULL;
 }
 
+/**
+ * ivpu_cmdq_get_entry_count - Calculate the number of entries in the command queue.
+ * @cmdq: Pointer to the command queue structure.
+ *
+ * Returns the number of entries that can fit in the command queue memory.
+ */
+static inline u32 ivpu_cmdq_get_entry_count(struct ivpu_cmdq *cmdq)
+{
+	size_t size = ivpu_bo_size(cmdq->mem) - sizeof(struct vpu_job_queue_header);
+
+	return size / sizeof(struct vpu_job_queue_entry);
+}
+
+/**
+ * ivpu_cmdq_get_flags - Get command queue flags based on input flags and test mode.
+ * @vdev: Pointer to the ivpu device structure.
+ * @flags: Input flags to determine the command queue flags.
+ *
+ * Returns the calculated command queue flags, considering both the input flags
+ * and the current test mode settings.
+ */
+static u32 ivpu_cmdq_get_flags(struct ivpu_device *vdev, u32 flags)
+{
+	u32 cmdq_flags = 0;
+
+	if ((flags & DRM_IVPU_CMDQ_FLAG_TURBO) && (ivpu_hw_ip_gen(vdev) >= IVPU_HW_IP_40XX))
+		cmdq_flags |= VPU_JOB_QUEUE_FLAGS_TURBO_MODE;
+
+	/* Test mode can override the TURBO flag coming from the application */
+	if (ivpu_test_mode & IVPU_TEST_MODE_TURBO_ENABLE)
+		cmdq_flags |= VPU_JOB_QUEUE_FLAGS_TURBO_MODE;
+	if (ivpu_test_mode & IVPU_TEST_MODE_TURBO_DISABLE)
+		cmdq_flags &= ~VPU_JOB_QUEUE_FLAGS_TURBO_MODE;
+
+	return cmdq_flags;
+}
+
 static void ivpu_cmdq_free(struct ivpu_file_priv *file_priv, struct ivpu_cmdq *cmdq)
 {
 	ivpu_preemption_buffers_free(file_priv->vdev, file_priv, cmdq);
 	ivpu_bo_free(cmdq->mem);
 	kfree(cmdq);
 }
 
-static struct ivpu_cmdq *ivpu_cmdq_create(struct ivpu_file_priv *file_priv, u8 priority,
-					  bool is_legacy)
+static struct ivpu_cmdq *ivpu_cmdq_create(struct ivpu_file_priv *file_priv, u8 priority, u32 flags)
 {
 	struct ivpu_device *vdev = file_priv->vdev;
 	struct ivpu_cmdq *cmdq = NULL;
@@ -121,18 +157,22 @@ static struct ivpu_cmdq *ivpu_cmdq_create(struct ivpu_file_priv *file_priv, u8 p
 		ivpu_err(vdev, "Failed to allocate command queue\n");
 		return NULL;
 	}
-
-	cmdq->priority = priority;
-	cmdq->is_legacy = is_legacy;
-
 	ret = xa_alloc_cyclic(&file_priv->cmdq_xa, &cmdq->id, cmdq, file_priv->cmdq_limit,
 			      &file_priv->cmdq_id_next, GFP_KERNEL);
 	if (ret < 0) {
 		ivpu_err(vdev, "Failed to allocate command queue ID: %d\n", ret);
 		goto err_free_cmdq;
 	}
 
-	ivpu_dbg(vdev, JOB, "Command queue %d created, ctx %d\n", cmdq->id, file_priv->ctx.id);
+	cmdq->entry_count = ivpu_cmdq_get_entry_count(cmdq);
+	cmdq->priority = priority;
+
+	cmdq->jobq = (struct vpu_job_queue *)ivpu_bo_vaddr(cmdq->mem);
+	cmdq->jobq->header.engine_idx = VPU_ENGINE_COMPUTE;
+	cmdq->jobq->header.flags = ivpu_cmdq_get_flags(vdev, flags);
+
+	ivpu_dbg(vdev, JOB, "Command queue %d created, ctx %d, flags 0x%08x\n",
+		 cmdq->id, file_priv->ctx.id, cmdq->jobq->header.flags);
 	return cmdq;
 
 err_free_cmdq:
@@ -188,27 +228,14 @@ static int ivpu_register_db(struct ivpu_file_priv *file_priv, struct ivpu_cmdq *
 	return ret;
 }
 
-static void ivpu_cmdq_jobq_init(struct ivpu_device *vdev, struct vpu_job_queue *jobq)
+static void ivpu_cmdq_jobq_reset(struct ivpu_device *vdev, struct vpu_job_queue *jobq)
 {
-	jobq->header.engine_idx = VPU_ENGINE_COMPUTE;
 	jobq->header.head = 0;
 	jobq->header.tail = 0;
 
-	if (ivpu_test_mode & IVPU_TEST_MODE_TURBO) {
-		ivpu_dbg(vdev, JOB, "Turbo mode enabled");
-		jobq->header.flags = VPU_JOB_QUEUE_FLAGS_TURBO_MODE;
-	}
-
 	wmb(); /* Flush WC buffer for jobq->header */
 }
 
-static inline u32 ivpu_cmdq_get_entry_count(struct ivpu_cmdq *cmdq)
-{
-	size_t size = ivpu_bo_size(cmdq->mem) - sizeof(struct vpu_job_queue_header);
-
-	return size / sizeof(struct vpu_job_queue_entry);
-}
-
 static int ivpu_cmdq_register(struct ivpu_file_priv *file_priv, struct ivpu_cmdq *cmdq)
 {
 	struct ivpu_device *vdev = file_priv->vdev;
@@ -219,10 +246,7 @@ static int ivpu_cmdq_register(struct ivpu_file_priv *file_priv, struct ivpu_cmdq
 	if (cmdq->db_id)
 		return 0;
 
-	cmdq->entry_count = ivpu_cmdq_get_entry_count(cmdq);
-	cmdq->jobq = (struct vpu_job_queue *)ivpu_bo_vaddr(cmdq->mem);
-
-	ivpu_cmdq_jobq_init(vdev, cmdq->jobq);
+	ivpu_cmdq_jobq_reset(vdev, cmdq->jobq);
 
 	if (vdev->fw->sched_mode == VPU_SCHEDULING_MODE_HW) {
 		ret = ivpu_hws_cmdq_init(file_priv, cmdq, VPU_ENGINE_COMPUTE, cmdq->priority);
@@ -291,9 +315,10 @@ static struct ivpu_cmdq *ivpu_cmdq_acquire_legacy(struct ivpu_file_priv *file_pr
 			break;
 
 	if (!cmdq) {
-		cmdq = ivpu_cmdq_create(file_priv, priority, true);
+		cmdq = ivpu_cmdq_create(file_priv, priority, 0);
 		if (!cmdq)
 			return NULL;
+		cmdq->is_legacy = true;
 	}
 
 	return cmdq;
@@ -891,7 +916,7 @@ int ivpu_cmdq_create_ioctl(struct drm_device *dev, void *data, struct drm_file *
 
 	mutex_lock(&file_priv->lock);
 
-	cmdq = ivpu_cmdq_create(file_priv, ivpu_job_to_jsm_priority(args->priority), false);
+	cmdq = ivpu_cmdq_create(file_priv, ivpu_job_to_jsm_priority(args->priority), args->flags);
 	if (cmdq)
 		args->cmdq_id = cmdq->id;
 

include/uapi/drm/ivpu_accel.h

@@ -445,6 +445,9 @@ struct drm_ivpu_metric_streamer_get_data {
 	__u64 data_size;
 };
 
+/* Command queue flags */
+#define DRM_IVPU_CMDQ_FLAG_TURBO 0x00000001
+
 /**
  * struct drm_ivpu_cmdq_create - Create command queue for job submission
  */
@@ -462,6 +465,17 @@ struct drm_ivpu_cmdq_create {
 	 * %DRM_IVPU_JOB_PRIORITY_REALTIME
 	 */
 	__u32 priority;
+	/**
+	 * @flags:
+	 *
+	 * Supported flags:
+	 *
+	 * %DRM_IVPU_CMDQ_FLAG_TURBO
+	 *
+	 * Enable low-latency mode for the command queue. The NPU will maximize performance
+	 * when executing jobs from such queue at the cost of increased power usage.
+	 */
+	__u32 flags;
 };
 
 /**