Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 439 insertions, 0 deletions

diff --git a/drivers/gpu/drm/qxl/qxl_release.c b/drivers/gpu/drm/qxl/qxl_release.c
new file mode 100644
index 000000000..368d26da0
--- /dev/null
+++ b/drivers/gpu/drm/qxl/qxl_release.c
@@ -0,0 +1,439 @@
+/*
+ * Copyright 2011 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <linux/delay.h>
+
+#include <trace/events/dma_fence.h>
+
+#include "qxl_drv.h"
+#include "qxl_object.h"
+
+/*
+ * drawable cmd cache - allocate a bunch of VRAM pages, suballocate
+ * into 256 byte chunks for now - gives 16 cmds per page.
+ *
+ * use an ida to index into the chunks?
+ */
+/* manage releaseables */
+/* stack them 16 high for now -drawable object is 191 */
+#define RELEASE_SIZE 256
+#define RELEASES_PER_BO (PAGE_SIZE / RELEASE_SIZE)
+/* put an alloc/dealloc surface cmd into one bo and round up to 128 */
+#define SURFACE_RELEASE_SIZE 128
+#define SURFACE_RELEASES_PER_BO (PAGE_SIZE / SURFACE_RELEASE_SIZE)
+
+static const int release_size_per_bo[] = { RELEASE_SIZE, SURFACE_RELEASE_SIZE, RELEASE_SIZE };
+static const int releases_per_bo[] = { RELEASES_PER_BO, SURFACE_RELEASES_PER_BO, RELEASES_PER_BO };
+
+static const char *qxl_get_driver_name(struct dma_fence *fence)
+{
+	return "qxl";
+}
+
+static const char *qxl_get_timeline_name(struct dma_fence *fence)
+{
+	return "release";
+}
+
+static long qxl_fence_wait(struct dma_fence *fence, bool intr,
+			   signed long timeout)
+{
+	struct qxl_device *qdev;
+	unsigned long cur, end = jiffies + timeout;
+
+	qdev = container_of(fence->lock, struct qxl_device, release_lock);
+
+	if (!wait_event_timeout(qdev->release_event,
+				(dma_fence_is_signaled(fence) ||
+				 (qxl_io_notify_oom(qdev), 0)),
+				timeout))
+		return 0;
+
+	cur = jiffies;
+	if (time_after(cur, end))
+		return 0;
+	return end - cur;
+}
+
+static const struct dma_fence_ops qxl_fence_ops = {
+	.get_driver_name = qxl_get_driver_name,
+	.get_timeline_name = qxl_get_timeline_name,
+	.wait = qxl_fence_wait,
+};
+
+static int
+qxl_release_alloc(struct qxl_device *qdev, int type,
+		  struct qxl_release **ret)
+{
+	struct qxl_release *release;
+	int handle;
+	size_t size = sizeof(*release);
+
+	release = kmalloc(size, GFP_KERNEL);
+	if (!release) {
+		DRM_ERROR("Out of memory\n");
+		return -ENOMEM;
+	}
+	release->base.ops = NULL;
+	release->type = type;
+	release->release_offset = 0;
+	release->surface_release_id = 0;
+	INIT_LIST_HEAD(&release->bos);
+
+	idr_preload(GFP_KERNEL);
+	spin_lock(&qdev->release_idr_lock);
+	handle = idr_alloc(&qdev->release_idr, release, 1, 0, GFP_NOWAIT);
+	release->base.seqno = ++qdev->release_seqno;
+	spin_unlock(&qdev->release_idr_lock);
+	idr_preload_end();
+	if (handle < 0) {
+		kfree(release);
+		*ret = NULL;
+		return handle;
+	}
+	*ret = release;
+	DRM_DEBUG_DRIVER("allocated release %d\n", handle);
+	release->id = handle;
+	return handle;
+}
+
+static void
+qxl_release_free_list(struct qxl_release *release)
+{
+	while (!list_empty(&release->bos)) {
+		struct qxl_bo_list *entry;
+		struct qxl_bo *bo;
+
+		entry = container_of(release->bos.next,
+				     struct qxl_bo_list, tv.head);
+		bo = to_qxl_bo(entry->tv.bo);
+		qxl_bo_unref(&bo);
+		list_del(&entry->tv.head);
+		kfree(entry);
+	}
+	release->release_bo = NULL;
+}
+
+void
+qxl_release_free(struct qxl_device *qdev,
+		 struct qxl_release *release)
+{
+	DRM_DEBUG_DRIVER("release %d, type %d\n", release->id, release->type);
+
+	if (release->surface_release_id)
+		qxl_surface_id_dealloc(qdev, release->surface_release_id);
+
+	spin_lock(&qdev->release_idr_lock);
+	idr_remove(&qdev->release_idr, release->id);
+	spin_unlock(&qdev->release_idr_lock);
+
+	if (release->base.ops) {
+		WARN_ON(list_empty(&release->bos));
+		qxl_release_free_list(release);
+
+		dma_fence_signal(&release->base);
+		dma_fence_put(&release->base);
+	} else {
+		qxl_release_free_list(release);
+		kfree(release);
+	}
+	atomic_dec(&qdev->release_count);
+}
+
+static int qxl_release_bo_alloc(struct qxl_device *qdev,
+				struct qxl_bo **bo,
+				u32 priority)
+{
+	/* pin releases bo's they are too messy to evict */
+	return qxl_bo_create(qdev, PAGE_SIZE, false, true,
+			     QXL_GEM_DOMAIN_VRAM, priority, NULL, bo);
+}
+
+int qxl_release_list_add(struct qxl_release *release, struct qxl_bo *bo)
+{
+	struct qxl_bo_list *entry;
+
+	list_for_each_entry(entry, &release->bos, tv.head) {
+		if (entry->tv.bo == &bo->tbo)
+			return 0;
+	}
+
+	entry = kmalloc(sizeof(struct qxl_bo_list), GFP_KERNEL);
+	if (!entry)
+		return -ENOMEM;
+
+	qxl_bo_ref(bo);
+	entry->tv.bo = &bo->tbo;
+	entry->tv.num_shared = 0;
+	list_add_tail(&entry->tv.head, &release->bos);
+	return 0;
+}
+
+static int qxl_release_validate_bo(struct qxl_bo *bo)
+{
+	struct ttm_operation_ctx ctx = { true, false };
+	int ret;
+
+	if (!bo->tbo.pin_count) {
+		qxl_ttm_placement_from_domain(bo, bo->type);
+		ret = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx);
+		if (ret)
+			return ret;
+	}
+
+	ret = dma_resv_reserve_fences(bo->tbo.base.resv, 1);
+	if (ret)
+		return ret;
+
+	/* allocate a surface for reserved + validated buffers */
+	ret = qxl_bo_check_id(to_qxl(bo->tbo.base.dev), bo);
+	if (ret)
+		return ret;
+	return 0;
+}
+
+int qxl_release_reserve_list(struct qxl_release *release, bool no_intr)
+{
+	int ret;
+	struct qxl_bo_list *entry;
+
+	/* if only one object on the release its the release itself
+	   since these objects are pinned no need to reserve */
+	if (list_is_singular(&release->bos))
+		return 0;
+
+	ret = ttm_eu_reserve_buffers(&release->ticket, &release->bos,
+				     !no_intr, NULL);
+	if (ret)
+		return ret;
+
+	list_for_each_entry(entry, &release->bos, tv.head) {
+		struct qxl_bo *bo = to_qxl_bo(entry->tv.bo);
+
+		ret = qxl_release_validate_bo(bo);
+		if (ret) {
+			ttm_eu_backoff_reservation(&release->ticket, &release->bos);
+			return ret;
+		}
+	}
+	return 0;
+}
+
+void qxl_release_backoff_reserve_list(struct qxl_release *release)
+{
+	/* if only one object on the release its the release itself
+	   since these objects are pinned no need to reserve */
+	if (list_is_singular(&release->bos))
+		return;
+
+	ttm_eu_backoff_reservation(&release->ticket, &release->bos);
+}
+
+int qxl_alloc_surface_release_reserved(struct qxl_device *qdev,
+				       enum qxl_surface_cmd_type surface_cmd_type,
+				       struct qxl_release *create_rel,
+				       struct qxl_release **release)
+{
+	if (surface_cmd_type == QXL_SURFACE_CMD_DESTROY && create_rel) {
+		int idr_ret;
+		struct qxl_bo *bo;
+		union qxl_release_info *info;
+
+		/* stash the release after the create command */
+		idr_ret = qxl_release_alloc(qdev, QXL_RELEASE_SURFACE_CMD, release);
+		if (idr_ret < 0)
+			return idr_ret;
+		bo = create_rel->release_bo;
+
+		(*release)->release_bo = bo;
+		(*release)->release_offset = create_rel->release_offset + 64;
+
+		qxl_release_list_add(*release, bo);
+
+		info = qxl_release_map(qdev, *release);
+		info->id = idr_ret;
+		qxl_release_unmap(qdev, *release, info);
+		return 0;
+	}
+
+	return qxl_alloc_release_reserved(qdev, sizeof(struct qxl_surface_cmd),
+					 QXL_RELEASE_SURFACE_CMD, release, NULL);
+}
+
+int qxl_alloc_release_reserved(struct qxl_device *qdev, unsigned long size,
+				       int type, struct qxl_release **release,
+				       struct qxl_bo **rbo)
+{
+	struct qxl_bo *bo, *free_bo = NULL;
+	int idr_ret;
+	int ret = 0;
+	union qxl_release_info *info;
+	int cur_idx;
+	u32 priority;
+
+	if (type == QXL_RELEASE_DRAWABLE) {
+		cur_idx = 0;
+		priority = 0;
+	} else if (type == QXL_RELEASE_SURFACE_CMD) {
+		cur_idx = 1;
+		priority = 1;
+	} else if (type == QXL_RELEASE_CURSOR_CMD) {
+		cur_idx = 2;
+		priority = 1;
+	}
+	else {
+		DRM_ERROR("got illegal type: %d\n", type);
+		return -EINVAL;
+	}
+
+	idr_ret = qxl_release_alloc(qdev, type, release);
+	if (idr_ret < 0) {
+		if (rbo)
+			*rbo = NULL;
+		return idr_ret;
+	}
+	atomic_inc(&qdev->release_count);
+
+	mutex_lock(&qdev->release_mutex);
+	if (qdev->current_release_bo_offset[cur_idx] + 1 >= releases_per_bo[cur_idx]) {
+		free_bo = qdev->current_release_bo[cur_idx];
+		qdev->current_release_bo_offset[cur_idx] = 0;
+		qdev->current_release_bo[cur_idx] = NULL;
+	}
+	if (!qdev->current_release_bo[cur_idx]) {
+		ret = qxl_release_bo_alloc(qdev, &qdev->current_release_bo[cur_idx], priority);
+		if (ret) {
+			mutex_unlock(&qdev->release_mutex);
+			if (free_bo) {
+				qxl_bo_unpin(free_bo);
+				qxl_bo_unref(&free_bo);
+			}
+			qxl_release_free(qdev, *release);
+			return ret;
+		}
+	}
+
+	bo = qxl_bo_ref(qdev->current_release_bo[cur_idx]);
+
+	(*release)->release_bo = bo;
+	(*release)->release_offset = qdev->current_release_bo_offset[cur_idx] * release_size_per_bo[cur_idx];
+	qdev->current_release_bo_offset[cur_idx]++;
+
+	if (rbo)
+		*rbo = bo;
+
+	mutex_unlock(&qdev->release_mutex);
+	if (free_bo) {
+		qxl_bo_unpin(free_bo);
+		qxl_bo_unref(&free_bo);
+	}
+
+	ret = qxl_release_list_add(*release, bo);
+	qxl_bo_unref(&bo);
+	if (ret) {
+		qxl_release_free(qdev, *release);
+		return ret;
+	}
+
+	info = qxl_release_map(qdev, *release);
+	info->id = idr_ret;
+	qxl_release_unmap(qdev, *release, info);
+
+	return ret;
+}
+
+struct qxl_release *qxl_release_from_id_locked(struct qxl_device *qdev,
+						   uint64_t id)
+{
+	struct qxl_release *release;
+
+	spin_lock(&qdev->release_idr_lock);
+	release = idr_find(&qdev->release_idr, id);
+	spin_unlock(&qdev->release_idr_lock);
+	if (!release) {
+		DRM_ERROR("failed to find id in release_idr\n");
+		return NULL;
+	}
+
+	return release;
+}
+
+union qxl_release_info *qxl_release_map(struct qxl_device *qdev,
+					struct qxl_release *release)
+{
+	void *ptr;
+	union qxl_release_info *info;
+	struct qxl_bo *bo = release->release_bo;
+
+	ptr = qxl_bo_kmap_atomic_page(qdev, bo, release->release_offset & PAGE_MASK);
+	if (!ptr)
+		return NULL;
+	info = ptr + (release->release_offset & ~PAGE_MASK);
+	return info;
+}
+
+void qxl_release_unmap(struct qxl_device *qdev,
+		       struct qxl_release *release,
+		       union qxl_release_info *info)
+{
+	struct qxl_bo *bo = release->release_bo;
+	void *ptr;
+
+	ptr = ((void *)info) - (release->release_offset & ~PAGE_MASK);
+	qxl_bo_kunmap_atomic_page(qdev, bo, ptr);
+}
+
+void qxl_release_fence_buffer_objects(struct qxl_release *release)
+{
+	struct ttm_buffer_object *bo;
+	struct ttm_device *bdev;
+	struct ttm_validate_buffer *entry;
+	struct qxl_device *qdev;
+
+	/* if only one object on the release its the release itself
+	   since these objects are pinned no need to reserve */
+	if (list_is_singular(&release->bos) || list_empty(&release->bos))
+		return;
+
+	bo = list_first_entry(&release->bos, struct ttm_validate_buffer, head)->bo;
+	bdev = bo->bdev;
+	qdev = container_of(bdev, struct qxl_device, mman.bdev);
+
+	/*
+	 * Since we never really allocated a context and we don't want to conflict,
+	 * set the highest bits. This will break if we really allow exporting of dma-bufs.
+	 */
+	dma_fence_init(&release->base, &qxl_fence_ops, &qdev->release_lock,
+		       release->id | 0xf0000000, release->base.seqno);
+	trace_dma_fence_emit(&release->base);
+
+	list_for_each_entry(entry, &release->bos, head) {
+		bo = entry->bo;
+
+		dma_resv_add_fence(bo->base.resv, &release->base,
+				   DMA_RESV_USAGE_READ);
+		ttm_bo_move_to_lru_tail_unlocked(bo);
+		dma_resv_unlock(bo->base.resv);
+	}
+	ww_acquire_fini(&release->ticket);
+}
+