Merge tag 'drm-misc-next-2020-12-17' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v5.12:

UAPI Changes:
- Not necessarily one, but we document that userspace needs to force probe connectors.

Cross-subsystem Changes:
- Require FB_ATY_CT for aty on sparc64.
- video: Fix documentation, and a few compiler warnings.
- Add devicetree bindings for DP connectors.
- dma-buf: Update kernel-doc, and add might_lock for resv objects in begin/end_cpu_access.

Core Changes:
- ttm: Warn when releasing a pinned bo.
- ttm: Cleanup bo size handling.
- cma-helper: Remove prime infix, and implement mmap as GEM CMA functions.
- Split drm_prime_sg_to_page_addr_arrays into 2 functions.
- Add a new api to install irq using devm.
- Update panel kerneldoc to inline style.
- Add DP support to drm/bridge.
- Assorted small fixes to ttm, fb-helper, scheduler.
- Add atomic_commit_setup function callback.
- Automatically use the atomic gamma_set, instead of forcing drivers to declare the default atomic version.
- Allow using degamma for legacy gamma if gamma is not available.
- Clarify that primary/cursor planes are not tied to 1 crtc (depending on possible_crtcs).
- ttm: Cleanup the lru handler.

Driver Changes:
- Add pm support to ingenic.
- Assorted small fixes in radeon, via, rockchip, omap2fb, kmb, gma500, nouveau, virtio, hisilicon, ingenic, s6e63m0 panel, ast, udlfb.
- Add BOE NV110WTM-N61, ys57pss36bh5gq, Khadas TS050 panels.
- Stop using pages with drm_prime_sg_to_page_addr_arrays, and switch all callers to use ttm_sg_tt_init.
- Cleanup compiler and docbook warnings in a lot of fbdev devices.
- Use the drmm_vram_helper in hisilicon.
- Add support for BCM2711 DSI1 in vc4.
- Add support for 8-bit delta RGB panels to ingenic.
- Add documentation on how to test vkms.
- Convert vc4 to atomic helpers.
- Use degamma instead of gamma table in omap, to add support for CTM and color encoding/range properties.
- Rework omap DSI code, and merge all omapdrm modules now that the last omap panel is now a drm panel.
- More refactoring of omap dsi code.
- Enable 10/12 bpc outputs in vc4.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/78381a4f-45fd-aed4-174a-94ba051edd37@linux.intel.com

1 files changed, 50 insertions, 31 deletions

diff --git a/drivers/gpu/drm/virtio/virtgpu_fence.c b/drivers/gpu/drm/virtio/virtgpu_fence.c
index 728ca36f6327..d28e25e8409b 100644
--- a/drivers/gpu/drm/virtio/virtgpu_fence.c
+++ b/drivers/gpu/drm/virtio/virtgpu_fence.c
@@ -27,51 +27,48 @@
 
 #include "virtgpu_drv.h"
 
-#define to_virtio_fence(x) \
+#define to_virtio_gpu_fence(x) \
 	container_of(x, struct virtio_gpu_fence, f)
 
-static const char *virtio_get_driver_name(struct dma_fence *f)
+static const char *virtio_gpu_get_driver_name(struct dma_fence *f)
 {
 	return "virtio_gpu";
 }
 
-static const char *virtio_get_timeline_name(struct dma_fence *f)
+static const char *virtio_gpu_get_timeline_name(struct dma_fence *f)
 {
 	return "controlq";
 }
 
-static bool virtio_fence_signaled(struct dma_fence *f)
+static bool virtio_gpu_fence_signaled(struct dma_fence *f)
 {
-	struct virtio_gpu_fence *fence = to_virtio_fence(f);
-
-	if (WARN_ON_ONCE(fence->f.seqno == 0))
-		/* leaked fence outside driver before completing
-		 * initialization with virtio_gpu_fence_emit */
-		return false;
-	if (atomic64_read(&fence->drv->last_fence_id) >= fence->f.seqno)
-		return true;
+	/* leaked fence outside driver before completing
+	 * initialization with virtio_gpu_fence_emit.
+	 */
+	WARN_ON_ONCE(f->seqno == 0);
 	return false;
 }
 
-static void virtio_fence_value_str(struct dma_fence *f, char *str, int size)
+static void virtio_gpu_fence_value_str(struct dma_fence *f, char *str, int size)
 {
-	snprintf(str, size, "%llu", f->seqno);
+	snprintf(str, size, "[%llu, %llu]", f->context, f->seqno);
 }
 
-static void virtio_timeline_value_str(struct dma_fence *f, char *str, int size)
+static void virtio_gpu_timeline_value_str(struct dma_fence *f, char *str,
+					  int size)
 {
-	struct virtio_gpu_fence *fence = to_virtio_fence(f);
+	struct virtio_gpu_fence *fence = to_virtio_gpu_fence(f);
 
 	snprintf(str, size, "%llu",
 		 (u64)atomic64_read(&fence->drv->last_fence_id));
 }
 
-static const struct dma_fence_ops virtio_fence_ops = {
-	.get_driver_name     = virtio_get_driver_name,
-	.get_timeline_name   = virtio_get_timeline_name,
-	.signaled            = virtio_fence_signaled,
-	.fence_value_str     = virtio_fence_value_str,
-	.timeline_value_str  = virtio_timeline_value_str,
+static const struct dma_fence_ops virtio_gpu_fence_ops = {
+	.get_driver_name     = virtio_gpu_get_driver_name,
+	.get_timeline_name   = virtio_gpu_get_timeline_name,
+	.signaled            = virtio_gpu_fence_signaled,
+	.fence_value_str     = virtio_gpu_fence_value_str,
+	.timeline_value_str  = virtio_gpu_timeline_value_str,
 };
 
 struct virtio_gpu_fence *virtio_gpu_fence_alloc(struct virtio_gpu_device *vgdev)
@@ -88,7 +85,8 @@ struct virtio_gpu_fence *virtio_gpu_fence_alloc(struct virtio_gpu_device *vgdev)
 	 * unknown yet.  The fence must not be used outside of the driver
 	 * until virtio_gpu_fence_emit is called.
 	 */
-	dma_fence_init(&fence->f, &virtio_fence_ops, &drv->lock, drv->context, 0);
+	dma_fence_init(&fence->f, &virtio_gpu_fence_ops, &drv->lock, drv->context,
+		       0);
 
 	return fence;
 }
@@ -101,7 +99,7 @@ void virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
 	unsigned long irq_flags;
 
 	spin_lock_irqsave(&drv->lock, irq_flags);
-	fence->f.seqno = ++drv->current_fence_id;
+	fence->fence_id = fence->f.seqno = ++drv->current_fence_id;
 	dma_fence_get(&fence->f);
 	list_add_tail(&fence->node, &drv->fences);
 	spin_unlock_irqrestore(&drv->lock, irq_flags);
@@ -109,24 +107,45 @@ void virtio_gpu_fence_emit(struct virtio_gpu_device *vgdev,
 	trace_dma_fence_emit(&fence->f);
 
 	cmd_hdr->flags |= cpu_to_le32(VIRTIO_GPU_FLAG_FENCE);
-	cmd_hdr->fence_id = cpu_to_le64(fence->f.seqno);
+	cmd_hdr->fence_id = cpu_to_le64(fence->fence_id);
 }
 
 void virtio_gpu_fence_event_process(struct virtio_gpu_device *vgdev,
 				    u64 fence_id)
 {
 	struct virtio_gpu_fence_driver *drv = &vgdev->fence_drv;
-	struct virtio_gpu_fence *fence, *tmp;
+	struct virtio_gpu_fence *signaled, *curr, *tmp;
 	unsigned long irq_flags;
 
 	spin_lock_irqsave(&drv->lock, irq_flags);
 	atomic64_set(&vgdev->fence_drv.last_fence_id, fence_id);
-	list_for_each_entry_safe(fence, tmp, &drv->fences, node) {
-		if (fence_id < fence->f.seqno)
+	list_for_each_entry_safe(curr, tmp, &drv->fences, node) {
+		if (fence_id != curr->fence_id)
 			continue;
-		dma_fence_signal_locked(&fence->f);
-		list_del(&fence->node);
-		dma_fence_put(&fence->f);
+
+		signaled = curr;
+
+		/*
+		 * Signal any fences with a strictly smaller sequence number
+		 * than the current signaled fence.
+		 */
+		list_for_each_entry_safe(curr, tmp, &drv->fences, node) {
+			/* dma-fence contexts must match */
+			if (signaled->f.context != curr->f.context)
+				continue;
+
+			if (!dma_fence_is_later(&signaled->f, &curr->f))
+				continue;
+
+			dma_fence_signal_locked(&curr->f);
+			list_del(&curr->node);
+			dma_fence_put(&curr->f);
+		}
+
+		dma_fence_signal_locked(&signaled->f);
+		list_del(&signaled->node);
+		dma_fence_put(&signaled->f);
+		break;
 	}
 	spin_unlock_irqrestore(&drv->lock, irq_flags);
 }