Merge: RHEL 10.1: DRM Main Backport (v6.15)

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-10/-/merge_requests/834

## Overview

The DRM backport's goal is to backport all the changes in the DRM subsystem to the kernel target version, with the biggest value being that we get the upstream hardware enablement (and bug fixes) into RHEL.

The first step of the DRM backport is identifying dependencies of the DRM backport outside of `drivers/gpu`. Done in https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-10/-/merge_requests/825 for kernel 6.15.

This MR is the second step: Backporting the changes in the DRM subsystem.

Since 6.15 will be released pretty late, 6.13 and 6.14 are handled in a different MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-10/-/merge_requests/615

## Dependencies:

This MR depends on the DRM Dependencies Backport for 6.15 as well as on the Dependencies and Main Backports for 6.13 and 6.14:

- 6.13 and 6.14 Dependencies Backport: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-10/-/merge_requests/627
- 6.13 and 6.14 Dependencies Backport: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-10/-/merge_requests/628
- 6.13 and 6.14 Dependencies Backport: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-10/-/merge_requests/606
- 6.13 and 6.14 Main Backport: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-10/-/merge_requests/615
- 6.15 Dependencies Backport: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-10/-/merge_requests/825

## Omitted fixes:

These fixes are omitted as they'll be backported by the DRM stable backport:

Omitted-fix: 9d80698 \
Omitted-fix: 5cc3325 \
Omitted-fix: 70e5043 \
Omitted-fix: d6fb4f0 \
Omitted-fix: 8e8d76f \
Omitted-fix: 7e0351a \
Omitted-fix: d6fb4f0 \
Omitted-fix: 9c7632f \
Omitted-fix: d30f610 \
Omitted-fix: d26625d \
Omitted-fix: e22d7ac \
Omitted-fix: 791d760 \
Omitted-fix: 10646dd \
Omitted-fix: 4557cc8 \
Omitted-fix: a47e36d \
Omitted-fix: a738fa9 \
Omitted-fix: d51adf0 \
Omitted-fix: 6acbf71 \
Omitted-fix: 988b1d2 \
Omitted-fix: 69a58ef \
Omitted-fix: c1f4534 \
Omitted-fix: 5cccf10 \
Omitted-fix: 6bf4d56 \
Omitted-fix: 3393c90 \
Omitted-fix: 57145af \
Omitted-fix: 8cf8cde \
Omitted-fix: a55737d \
Omitted-fix: 99579c5 \
Omitted-fix: fb721b2 \
Omitted-fix: 9205999 \
Omitted-fix: 73eab78 \
Omitted-fix: afcad92 \
Omitted-fix: 2d5cff2 \
Omitted-fix: 34659c1 \
Omitted-fix: 6d33df6

These non-blocking fixes will be backported as well:

Omitted-fix: c67c0fe \
Omitted-fix: 25b2f46 \
Omitted-fix: 1450e45 \
Omitted-fix: 50af973 \
Omitted-fix: c8c70ff \
Omitted-fix: 5307dce \
Omitted-fix: f6bfc9a

## Other:

JIRA: https://issues.redhat.com/browse/RHEL-88418

Signed-off-by: José Expósito <jexposit@redhat.com>

Depends: !627
Depends: !628
Depends: !606
Depends: !615
Depends: !825

[jwilson: added explicit Depends lines for dependency MRs]
Signed-off-by: Jarod Wilson <jarod@redhat.com>

Approved-by: Robert Foss <rfoss@kernel.org>
Approved-by: Karol Herbst <kherbst@redhat.com>
Approved-by: Eric Chanudet <echanude@redhat.com>
Approved-by: Jan Stancek <jstancek@redhat.com>
Approved-by: David Airlie <airlied@redhat.com>
Approved-by: CKI KWF Bot <cki-ci-bot+kwf-gitlab-com@redhat.com>

Merged-by: Julio Faracco <jfaracco@redhat.com>

Author: jcfaracco

Makefile

@@ -8,7 +8,7 @@ NAME = Baby Opossum Posse
 # DRM backport version
 #
 RHEL_DRM_VERSION = 6
-RHEL_DRM_PATCHLEVEL = 14
+RHEL_DRM_PATCHLEVEL = 15
 RHEL_DRM_SUBLEVEL =
 
 # *DOCUMENTATION*

drivers/accel/ivpu/ivpu_debugfs.c

@@ -4,6 +4,7 @@
  */
 
 #include <linux/debugfs.h>
+#include <linux/fault-inject.h>
 
 #include <drm/drm_debugfs.h>
 #include <drm/drm_file.h>
@@ -331,7 +332,7 @@ ivpu_force_recovery_fn(struct file *file, const char __user *user_buf, size_t si
 		return -EINVAL;
 
 	ret = ivpu_rpm_get(vdev);
-	if (ret)
+	if (ret < 0)
 		return ret;
 
 	ivpu_pm_trigger_recovery(vdev, "debugfs");
@@ -382,7 +383,7 @@ static int dct_active_set(void *data, u64 active_percent)
 		return -EINVAL;
 
 	ret = ivpu_rpm_get(vdev);
-	if (ret)
+	if (ret < 0)
 		return ret;
 
 	if (active_percent)
@@ -397,6 +398,88 @@ static int dct_active_set(void *data, u64 active_percent)
 
 DEFINE_DEBUGFS_ATTRIBUTE(ivpu_dct_fops, dct_active_get, dct_active_set, "%llu\n");
 
+static int priority_bands_show(struct seq_file *s, void *v)
+{
+	struct ivpu_device *vdev = s->private;
+	struct ivpu_hw_info *hw = vdev->hw;
+
+	for (int band = VPU_JOB_SCHEDULING_PRIORITY_BAND_IDLE;
+	     band < VPU_JOB_SCHEDULING_PRIORITY_BAND_COUNT; band++) {
+		switch (band) {
+		case VPU_JOB_SCHEDULING_PRIORITY_BAND_IDLE:
+			seq_puts(s, "Idle:     ");
+			break;
+
+		case VPU_JOB_SCHEDULING_PRIORITY_BAND_NORMAL:
+			seq_puts(s, "Normal:   ");
+			break;
+
+		case VPU_JOB_SCHEDULING_PRIORITY_BAND_FOCUS:
+			seq_puts(s, "Focus:    ");
+			break;
+
+		case VPU_JOB_SCHEDULING_PRIORITY_BAND_REALTIME:
+			seq_puts(s, "Realtime: ");
+			break;
+		}
+
+		seq_printf(s, "grace_period %9u process_grace_period %9u process_quantum %9u\n",
+			   hw->hws.grace_period[band], hw->hws.process_grace_period[band],
+			   hw->hws.process_quantum[band]);
+	}
+
+	return 0;
+}
+
+static int priority_bands_fops_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, priority_bands_show, inode->i_private);
+}
+
+static ssize_t
+priority_bands_fops_write(struct file *file, const char __user *user_buf, size_t size, loff_t *pos)
+{
+	struct seq_file *s = file->private_data;
+	struct ivpu_device *vdev = s->private;
+	char buf[64];
+	u32 grace_period;
+	u32 process_grace_period;
+	u32 process_quantum;
+	u32 band;
+	int ret;
+
+	if (size >= sizeof(buf))
+		return -EINVAL;
+
+	ret = simple_write_to_buffer(buf, sizeof(buf) - 1, pos, user_buf, size);
+	if (ret < 0)
+		return ret;
+
+	buf[ret] = '\0';
+	ret = sscanf(buf, "%u %u %u %u", &band, &grace_period, &process_grace_period,
+		     &process_quantum);
+	if (ret != 4)
+		return -EINVAL;
+
+	if (band >= VPU_JOB_SCHEDULING_PRIORITY_BAND_COUNT)
+		return -EINVAL;
+
+	vdev->hw->hws.grace_period[band] = grace_period;
+	vdev->hw->hws.process_grace_period[band] = process_grace_period;
+	vdev->hw->hws.process_quantum[band] = process_quantum;
+
+	return size;
+}
+
+static const struct file_operations ivpu_hws_priority_bands_fops = {
+	.owner = THIS_MODULE,
+	.open = priority_bands_fops_open,
+	.write = priority_bands_fops_write,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
 void ivpu_debugfs_init(struct ivpu_device *vdev)
 {
 	struct dentry *debugfs_root = vdev->drm.debugfs_root;
@@ -419,6 +502,8 @@ void ivpu_debugfs_init(struct ivpu_device *vdev)
 			    &fw_trace_hw_comp_mask_fops);
 	debugfs_create_file("fw_trace_level", 0200, debugfs_root, vdev,
 			    &fw_trace_level_fops);
+	debugfs_create_file("hws_priority_bands", 0200, debugfs_root, vdev,
+			    &ivpu_hws_priority_bands_fops);
 
 	debugfs_create_file("reset_engine", 0200, debugfs_root, vdev,
 			    &ivpu_reset_engine_fops);
@@ -430,4 +515,8 @@ void ivpu_debugfs_init(struct ivpu_device *vdev)
 				    debugfs_root, vdev, &fw_profiling_freq_fops);
 		debugfs_create_file("dct", 0644, debugfs_root, vdev, &ivpu_dct_fops);
 	}
+
+#ifdef CONFIG_FAULT_INJECTION
+	fault_create_debugfs_attr("fail_hw", debugfs_root, &ivpu_hw_failure);
+#endif
 }

drivers/accel/ivpu/ivpu_drv.c

@@ -1,12 +1,13 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (C) 2020-2024 Intel Corporation
+ * Copyright (C) 2020-2025 Intel Corporation
  */
 
 #include <linux/firmware.h>
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/pm_runtime.h>
+#include <linux/workqueue.h>
 #include <generated/utsrelease.h>
 
 #include <drm/drm_accel.h>
@@ -36,8 +37,6 @@
 #define DRIVER_VERSION_STR "1.0.0 " UTS_RELEASE
 #endif
 
-static struct lock_class_key submitted_jobs_xa_lock_class_key;
-
 int ivpu_dbg_mask;
 module_param_named(dbg_mask, ivpu_dbg_mask, int, 0644);
 MODULE_PARM_DESC(dbg_mask, "Driver debug mask. See IVPU_DBG_* macros.");
@@ -128,20 +127,18 @@ void ivpu_file_priv_put(struct ivpu_file_priv **link)
 	kref_put(&file_priv->ref, file_priv_release);
 }
 
-static int ivpu_get_capabilities(struct ivpu_device *vdev, struct drm_ivpu_param *args)
+bool ivpu_is_capable(struct ivpu_device *vdev, u32 capability)
 {
-	switch (args->index) {
+	switch (capability) {
 	case DRM_IVPU_CAP_METRIC_STREAMER:
-		args->value = 1;
-		break;
+		return true;
 	case DRM_IVPU_CAP_DMA_MEMORY_RANGE:
-		args->value = 1;
-		break;
+		return true;
+	case DRM_IVPU_CAP_MANAGE_CMDQ:
+		return vdev->fw->sched_mode == VPU_SCHEDULING_MODE_HW;
 	default:
-		return -EINVAL;
+		return false;
 	}
-
-	return 0;
 }
 
 static int ivpu_get_param_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
@@ -167,7 +164,7 @@ static int ivpu_get_param_ioctl(struct drm_device *dev, void *data, struct drm_f
 		args->value = vdev->platform;
 		break;
 	case DRM_IVPU_PARAM_CORE_CLOCK_RATE:
-		args->value = ivpu_hw_ratio_to_freq(vdev, vdev->hw->pll.max_ratio);
+		args->value = ivpu_hw_dpu_max_freq_get(vdev);
 		break;
 	case DRM_IVPU_PARAM_NUM_CONTEXTS:
 		args->value = ivpu_get_context_count(vdev);
@@ -201,7 +198,7 @@ static int ivpu_get_param_ioctl(struct drm_device *dev, void *data, struct drm_f
 		args->value = vdev->hw->sku;
 		break;
 	case DRM_IVPU_PARAM_CAPABILITIES:
-		ret = ivpu_get_capabilities(vdev, args);
+		args->value = ivpu_is_capable(vdev, args->index);
 		break;
 	default:
 		ret = -EINVAL;
@@ -310,6 +307,9 @@ static const struct drm_ioctl_desc ivpu_drm_ioctls[] = {
 	DRM_IOCTL_DEF_DRV(IVPU_METRIC_STREAMER_GET_DATA, ivpu_ms_get_data_ioctl, 0),
 	DRM_IOCTL_DEF_DRV(IVPU_METRIC_STREAMER_STOP, ivpu_ms_stop_ioctl, 0),
 	DRM_IOCTL_DEF_DRV(IVPU_METRIC_STREAMER_GET_INFO, ivpu_ms_get_info_ioctl, 0),
+	DRM_IOCTL_DEF_DRV(IVPU_CMDQ_CREATE, ivpu_cmdq_create_ioctl, 0),
+	DRM_IOCTL_DEF_DRV(IVPU_CMDQ_DESTROY, ivpu_cmdq_destroy_ioctl, 0),
+	DRM_IOCTL_DEF_DRV(IVPU_CMDQ_SUBMIT, ivpu_cmdq_submit_ioctl, 0),
 };
 
 static int ivpu_wait_for_ready(struct ivpu_device *vdev)
@@ -421,6 +421,9 @@ void ivpu_prepare_for_reset(struct ivpu_device *vdev)
 {
 	ivpu_hw_irq_disable(vdev);
 	disable_irq(vdev->irq);
+	flush_work(&vdev->irq_ipc_work);
+	flush_work(&vdev->irq_dct_work);
+	flush_work(&vdev->context_abort_work);
 	ivpu_ipc_disable(vdev);
 	ivpu_mmu_disable(vdev);
 }
@@ -453,7 +456,7 @@ static const struct drm_driver driver = {
 	.postclose = ivpu_postclose,
 
 	.gem_create_object = ivpu_gem_create_object,
-	.gem_prime_import_sg_table = drm_gem_shmem_prime_import_sg_table,
+	.gem_prime_import = ivpu_gem_prime_import,
 
 	.ioctls = ivpu_drm_ioctls,
 	.num_ioctls = ARRAY_SIZE(ivpu_drm_ioctls),
@@ -465,54 +468,6 @@ static const struct drm_driver driver = {
 	.major = 1,
 };
 
-static void ivpu_context_abort_invalid(struct ivpu_device *vdev)
-{
-	struct ivpu_file_priv *file_priv;
-	unsigned long ctx_id;
-
-	mutex_lock(&vdev->context_list_lock);
-
-	xa_for_each(&vdev->context_xa, ctx_id, file_priv) {
-		if (!file_priv->has_mmu_faults || file_priv->aborted)
-			continue;
-
-		mutex_lock(&file_priv->lock);
-		ivpu_context_abort_locked(file_priv);
-		file_priv->aborted = true;
-		mutex_unlock(&file_priv->lock);
-	}
-
-	mutex_unlock(&vdev->context_list_lock);
-}
-
-static irqreturn_t ivpu_irq_thread_handler(int irq, void *arg)
-{
-	struct ivpu_device *vdev = arg;
-	u8 irq_src;
-
-	if (kfifo_is_empty(&vdev->hw->irq.fifo))
-		return IRQ_NONE;
-
-	while (kfifo_get(&vdev->hw->irq.fifo, &irq_src)) {
-		switch (irq_src) {
-		case IVPU_HW_IRQ_SRC_IPC:
-			ivpu_ipc_irq_thread_handler(vdev);
-			break;
-		case IVPU_HW_IRQ_SRC_MMU_EVTQ:
-			ivpu_context_abort_invalid(vdev);
-			break;
-		case IVPU_HW_IRQ_SRC_DCT:
-			ivpu_pm_dct_irq_thread_handler(vdev);
-			break;
-		default:
-			ivpu_err_ratelimited(vdev, "Unknown IRQ source: %u\n", irq_src);
-			break;
-		}
-	}
-
-	return IRQ_HANDLED;
-}
-
 static int ivpu_irq_init(struct ivpu_device *vdev)
 {
 	struct pci_dev *pdev = to_pci_dev(vdev->drm.dev);
@@ -524,12 +479,16 @@ static int ivpu_irq_init(struct ivpu_device *vdev)
 		return ret;
 	}
 
+	INIT_WORK(&vdev->irq_ipc_work, ivpu_ipc_irq_work_fn);
+	INIT_WORK(&vdev->irq_dct_work, ivpu_pm_irq_dct_work_fn);
+	INIT_WORK(&vdev->context_abort_work, ivpu_context_abort_work_fn);
+
 	ivpu_irq_handlers_init(vdev);
 
 	vdev->irq = pci_irq_vector(pdev, 0);
 
-	ret = devm_request_threaded_irq(vdev->drm.dev, vdev->irq, ivpu_hw_irq_handler,
-					ivpu_irq_thread_handler, IRQF_NO_AUTOEN, DRIVER_NAME, vdev);
+	ret = devm_request_irq(vdev->drm.dev, vdev->irq, ivpu_hw_irq_handler,
+			       IRQF_NO_AUTOEN, DRIVER_NAME, vdev);
 	if (ret)
 		ivpu_err(vdev, "Failed to request an IRQ %d\n", ret);
 
@@ -617,7 +576,6 @@ static int ivpu_dev_init(struct ivpu_device *vdev)
 	xa_init_flags(&vdev->context_xa, XA_FLAGS_ALLOC | XA_FLAGS_LOCK_IRQ);
 	xa_init_flags(&vdev->submitted_jobs_xa, XA_FLAGS_ALLOC1);
 	xa_init_flags(&vdev->db_xa, XA_FLAGS_ALLOC1);
-	lockdep_set_class(&vdev->submitted_jobs_xa.xa_lock, &submitted_jobs_xa_lock_class_key);
 	INIT_LIST_HEAD(&vdev->bo_list);
 
 	vdev->db_limit.min = IVPU_MIN_DB;
@@ -627,6 +585,10 @@ static int ivpu_dev_init(struct ivpu_device *vdev)
 	if (ret)
 		goto err_xa_destroy;
 
+	ret = drmm_mutex_init(&vdev->drm, &vdev->submitted_jobs_lock);
+	if (ret)
+		goto err_xa_destroy;
+
 	ret = drmm_mutex_init(&vdev->drm, &vdev->bo_list_lock);
 	if (ret)
 		goto err_xa_destroy;

drivers/accel/ivpu/ivpu_drv.h

@@ -58,6 +58,7 @@
 #define IVPU_PLATFORM_SILICON 0
 #define IVPU_PLATFORM_SIMICS  2
 #define IVPU_PLATFORM_FPGA    3
+#define IVPU_PLATFORM_HSLE    4
 #define IVPU_PLATFORM_INVALID 8
 
 #define IVPU_SCHED_MODE_AUTO -1
@@ -110,6 +111,7 @@ struct ivpu_wa_table {
 	bool disable_clock_relinquish;
 	bool disable_d0i3_msg;
 	bool wp0_during_power_up;
+	bool disable_d0i2;
 };
 
 struct ivpu_hw_info;
@@ -142,9 +144,14 @@ struct ivpu_device {
 	struct xa_limit db_limit;
 	u32 db_next;
 
+	struct work_struct irq_ipc_work;
+	struct work_struct irq_dct_work;
+	struct work_struct context_abort_work;
+
 	struct mutex bo_list_lock; /* Protects bo_list */
 	struct list_head bo_list;
 
+	struct mutex submitted_jobs_lock; /* Protects submitted_jobs */
 	struct xarray submitted_jobs_xa;
 	struct ivpu_ipc_consumer job_done_consumer;
 
@@ -200,6 +207,9 @@ extern bool ivpu_force_snoop;
 #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)
 extern int ivpu_test_mode;
 
 struct ivpu_file_priv *ivpu_file_priv_get(struct ivpu_file_priv *file_priv);
@@ -208,6 +218,7 @@ void ivpu_file_priv_put(struct ivpu_file_priv **link);
 int ivpu_boot(struct ivpu_device *vdev);
 int ivpu_shutdown(struct ivpu_device *vdev);
 void ivpu_prepare_for_reset(struct ivpu_device *vdev);
+bool ivpu_is_capable(struct ivpu_device *vdev, u32 capability);
 
 static inline u8 ivpu_revision(struct ivpu_device *vdev)
 {
@@ -282,7 +293,8 @@ static inline bool ivpu_is_simics(struct ivpu_device *vdev)
 
 static inline bool ivpu_is_fpga(struct ivpu_device *vdev)
 {
-	return ivpu_get_platform(vdev) == IVPU_PLATFORM_FPGA;
+	return ivpu_get_platform(vdev) == IVPU_PLATFORM_FPGA ||
+	       ivpu_get_platform(vdev) == IVPU_PLATFORM_HSLE;
 }
 
 static inline bool ivpu_is_force_snoop_enabled(struct ivpu_device *vdev)