Adding upstream version 4.19.249.upstream/4.19.249

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

1 files changed, 1234 insertions, 0 deletions

diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
new file mode 100644
index 000000000..769e12b4c
--- /dev/null
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@@ -0,0 +1,1234 @@
+/*
+ * Copyright 2013 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
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ *
+ * Authors: Dave Airlie
+ *          Alon Levy
+ */
+
+#include <linux/crc32.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_plane_helper.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_atomic.h>
+
+#include "qxl_drv.h"
+#include "qxl_object.h"
+
+static bool qxl_head_enabled(struct qxl_head *head)
+{
+	return head->width && head->height;
+}
+
+static void qxl_alloc_client_monitors_config(struct qxl_device *qdev, unsigned count)
+{
+	if (qdev->client_monitors_config &&
+	    count > qdev->client_monitors_config->count) {
+		kfree(qdev->client_monitors_config);
+		qdev->client_monitors_config = NULL;
+	}
+	if (!qdev->client_monitors_config) {
+		qdev->client_monitors_config = kzalloc(
+				sizeof(struct qxl_monitors_config) +
+				sizeof(struct qxl_head) * count, GFP_KERNEL);
+		if (!qdev->client_monitors_config)
+			return;
+	}
+	qdev->client_monitors_config->count = count;
+}
+
+enum {
+	MONITORS_CONFIG_MODIFIED,
+	MONITORS_CONFIG_UNCHANGED,
+	MONITORS_CONFIG_BAD_CRC,
+};
+
+static int qxl_display_copy_rom_client_monitors_config(struct qxl_device *qdev)
+{
+	int i;
+	int num_monitors;
+	uint32_t crc;
+	int status = MONITORS_CONFIG_UNCHANGED;
+
+	num_monitors = qdev->rom->client_monitors_config.count;
+	crc = crc32(0, (const uint8_t *)&qdev->rom->client_monitors_config,
+		  sizeof(qdev->rom->client_monitors_config));
+	if (crc != qdev->rom->client_monitors_config_crc)
+		return MONITORS_CONFIG_BAD_CRC;
+	if (!num_monitors) {
+		DRM_DEBUG_KMS("no client monitors configured\n");
+		return status;
+	}
+	if (num_monitors > qdev->monitors_config->max_allowed) {
+		DRM_DEBUG_KMS("client monitors list will be truncated: %d < %d\n",
+			      qdev->monitors_config->max_allowed, num_monitors);
+		num_monitors = qdev->monitors_config->max_allowed;
+	} else {
+		num_monitors = qdev->rom->client_monitors_config.count;
+	}
+	if (qdev->client_monitors_config
+	      && (num_monitors != qdev->client_monitors_config->count)) {
+		status = MONITORS_CONFIG_MODIFIED;
+	}
+	qxl_alloc_client_monitors_config(qdev, num_monitors);
+	/* we copy max from the client but it isn't used */
+	qdev->client_monitors_config->max_allowed =
+				qdev->monitors_config->max_allowed;
+	for (i = 0 ; i < qdev->client_monitors_config->count ; ++i) {
+		struct qxl_urect *c_rect =
+			&qdev->rom->client_monitors_config.heads[i];
+		struct qxl_head *client_head =
+			&qdev->client_monitors_config->heads[i];
+		if (client_head->x != c_rect->left) {
+			client_head->x = c_rect->left;
+			status = MONITORS_CONFIG_MODIFIED;
+		}
+		if (client_head->y != c_rect->top) {
+			client_head->y = c_rect->top;
+			status = MONITORS_CONFIG_MODIFIED;
+		}
+		if (client_head->width != c_rect->right - c_rect->left) {
+			client_head->width = c_rect->right - c_rect->left;
+			status = MONITORS_CONFIG_MODIFIED;
+		}
+		if (client_head->height != c_rect->bottom - c_rect->top) {
+			client_head->height = c_rect->bottom - c_rect->top;
+			status = MONITORS_CONFIG_MODIFIED;
+		}
+		if (client_head->surface_id != 0) {
+			client_head->surface_id = 0;
+			status = MONITORS_CONFIG_MODIFIED;
+		}
+		if (client_head->id != i) {
+			client_head->id = i;
+			status = MONITORS_CONFIG_MODIFIED;
+		}
+		if (client_head->flags != 0) {
+			client_head->flags = 0;
+			status = MONITORS_CONFIG_MODIFIED;
+		}
+		DRM_DEBUG_KMS("read %dx%d+%d+%d\n", client_head->width, client_head->height,
+			  client_head->x, client_head->y);
+	}
+
+	return status;
+}
+
+static void qxl_update_offset_props(struct qxl_device *qdev)
+{
+	struct drm_device *dev = &qdev->ddev;
+	struct drm_connector *connector;
+	struct qxl_output *output;
+	struct qxl_head *head;
+
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		output = drm_connector_to_qxl_output(connector);
+
+		head = &qdev->client_monitors_config->heads[output->index];
+
+		drm_object_property_set_value(&connector->base,
+			dev->mode_config.suggested_x_property, head->x);
+		drm_object_property_set_value(&connector->base,
+			dev->mode_config.suggested_y_property, head->y);
+	}
+}
+
+void qxl_display_read_client_monitors_config(struct qxl_device *qdev)
+{
+	struct drm_device *dev = &qdev->ddev;
+	int status, retries;
+
+	for (retries = 0; retries < 10; retries++) {
+		status = qxl_display_copy_rom_client_monitors_config(qdev);
+		if (status != MONITORS_CONFIG_BAD_CRC)
+			break;
+		udelay(5);
+	}
+	if (status == MONITORS_CONFIG_BAD_CRC) {
+		DRM_DEBUG_KMS("ignoring client monitors config: bad crc");
+		return;
+	}
+	if (status == MONITORS_CONFIG_UNCHANGED) {
+		DRM_DEBUG_KMS("ignoring client monitors config: unchanged");
+		return;
+	}
+
+	drm_modeset_lock_all(dev);
+	qxl_update_offset_props(qdev);
+	drm_modeset_unlock_all(dev);
+	if (!drm_helper_hpd_irq_event(dev)) {
+		/* notify that the monitor configuration changed, to
+		   adjust at the arbitrary resolution */
+		drm_kms_helper_hotplug_event(dev);
+	}
+}
+
+static int qxl_add_monitors_config_modes(struct drm_connector *connector,
+                                         unsigned *pwidth,
+                                         unsigned *pheight)
+{
+	struct drm_device *dev = connector->dev;
+	struct qxl_device *qdev = dev->dev_private;
+	struct qxl_output *output = drm_connector_to_qxl_output(connector);
+	int h = output->index;
+	struct drm_display_mode *mode = NULL;
+	struct qxl_head *head;
+
+	if (!qdev->monitors_config)
+		return 0;
+	if (h >= qdev->monitors_config->max_allowed)
+		return 0;
+	if (!qdev->client_monitors_config)
+		return 0;
+	if (h >= qdev->client_monitors_config->count)
+		return 0;
+
+	head = &qdev->client_monitors_config->heads[h];
+	DRM_DEBUG_KMS("head %d is %dx%d\n", h, head->width, head->height);
+
+	mode = drm_cvt_mode(dev, head->width, head->height, 60, false, false,
+			    false);
+	mode->type |= DRM_MODE_TYPE_PREFERRED;
+	mode->hdisplay = head->width;
+	mode->vdisplay = head->height;
+	drm_mode_set_name(mode);
+	*pwidth = head->width;
+	*pheight = head->height;
+	drm_mode_probed_add(connector, mode);
+	/* remember the last custom size for mode validation */
+	qdev->monitors_config_width = mode->hdisplay;
+	qdev->monitors_config_height = mode->vdisplay;
+	return 1;
+}
+
+static struct mode_size {
+	int w;
+	int h;
+} common_modes[] = {
+	{ 640,  480},
+	{ 720,  480},
+	{ 800,  600},
+	{ 848,  480},
+	{1024,  768},
+	{1152,  768},
+	{1280,  720},
+	{1280,  800},
+	{1280,  854},
+	{1280,  960},
+	{1280, 1024},
+	{1440,  900},
+	{1400, 1050},
+	{1680, 1050},
+	{1600, 1200},
+	{1920, 1080},
+	{1920, 1200}
+};
+
+static int qxl_add_common_modes(struct drm_connector *connector,
+                                unsigned pwidth,
+                                unsigned pheight)
+{
+	struct drm_device *dev = connector->dev;
+	struct drm_display_mode *mode = NULL;
+	int i;
+	for (i = 0; i < ARRAY_SIZE(common_modes); i++) {
+		mode = drm_cvt_mode(dev, common_modes[i].w, common_modes[i].h,
+				    60, false, false, false);
+		if (common_modes[i].w == pwidth && common_modes[i].h == pheight)
+			mode->type |= DRM_MODE_TYPE_PREFERRED;
+		drm_mode_probed_add(connector, mode);
+	}
+	return i - 1;
+}
+
+static void qxl_send_monitors_config(struct qxl_device *qdev)
+{
+	int i;
+
+	BUG_ON(!qdev->ram_header->monitors_config);
+
+	if (qdev->monitors_config->count == 0)
+		return;
+
+	for (i = 0 ; i < qdev->monitors_config->count ; ++i) {
+		struct qxl_head *head = &qdev->monitors_config->heads[i];
+
+		if (head->y > 8192 || head->x > 8192 ||
+		    head->width > 8192 || head->height > 8192) {
+			DRM_ERROR("head %d wrong: %dx%d+%d+%d\n",
+				  i, head->width, head->height,
+				  head->x, head->y);
+			return;
+		}
+	}
+	qxl_io_monitors_config(qdev);
+}
+
+static void qxl_crtc_update_monitors_config(struct drm_crtc *crtc,
+					    const char *reason)
+{
+	struct drm_device *dev = crtc->dev;
+	struct qxl_device *qdev = dev->dev_private;
+	struct qxl_crtc *qcrtc = to_qxl_crtc(crtc);
+	struct qxl_head head;
+	int oldcount, i = qcrtc->index;
+
+	if (!qdev->primary_created) {
+		DRM_DEBUG_KMS("no primary surface, skip (%s)\n", reason);
+		return;
+	}
+
+	if (!qdev->monitors_config ||
+	    qdev->monitors_config->max_allowed <= i)
+		return;
+
+	head.id = i;
+	head.flags = 0;
+	oldcount = qdev->monitors_config->count;
+	if (crtc->state->active) {
+		struct drm_display_mode *mode = &crtc->mode;
+		head.width = mode->hdisplay;
+		head.height = mode->vdisplay;
+		head.x = crtc->x;
+		head.y = crtc->y;
+		if (qdev->monitors_config->count < i + 1)
+			qdev->monitors_config->count = i + 1;
+	} else if (i > 0) {
+		head.width = 0;
+		head.height = 0;
+		head.x = 0;
+		head.y = 0;
+		if (qdev->monitors_config->count == i + 1)
+			qdev->monitors_config->count = i;
+	} else {
+		DRM_DEBUG_KMS("inactive head 0, skip (%s)\n", reason);
+		return;
+	}
+
+	if (head.width  == qdev->monitors_config->heads[i].width  &&
+	    head.height == qdev->monitors_config->heads[i].height &&
+	    head.x      == qdev->monitors_config->heads[i].x      &&
+	    head.y      == qdev->monitors_config->heads[i].y      &&
+	    oldcount    == qdev->monitors_config->count)
+		return;
+
+	DRM_DEBUG_KMS("head %d, %dx%d, at +%d+%d, %s (%s)\n",
+		      i, head.width, head.height, head.x, head.y,
+		      crtc->state->active ? "on" : "off", reason);
+	if (oldcount != qdev->monitors_config->count)
+		DRM_DEBUG_KMS("active heads %d -> %d (%d total)\n",
+			      oldcount, qdev->monitors_config->count,
+			      qdev->monitors_config->max_allowed);
+
+	qdev->monitors_config->heads[i] = head;
+	qxl_send_monitors_config(qdev);
+}
+
+static void qxl_crtc_atomic_flush(struct drm_crtc *crtc,
+				  struct drm_crtc_state *old_crtc_state)
+{
+	struct drm_device *dev = crtc->dev;
+	struct drm_pending_vblank_event *event;
+	unsigned long flags;
+
+	if (crtc->state && crtc->state->event) {
+		event = crtc->state->event;
+		crtc->state->event = NULL;
+
+		spin_lock_irqsave(&dev->event_lock, flags);
+		drm_crtc_send_vblank_event(crtc, event);
+		spin_unlock_irqrestore(&dev->event_lock, flags);
+	}
+
+	qxl_crtc_update_monitors_config(crtc, "flush");
+}
+
+static void qxl_crtc_destroy(struct drm_crtc *crtc)
+{
+	struct qxl_crtc *qxl_crtc = to_qxl_crtc(crtc);
+
+	qxl_bo_unref(&qxl_crtc->cursor_bo);
+	drm_crtc_cleanup(crtc);
+	kfree(qxl_crtc);
+}
+
+static const struct drm_crtc_funcs qxl_crtc_funcs = {
+	.set_config = drm_atomic_helper_set_config,
+	.destroy = qxl_crtc_destroy,
+	.page_flip = drm_atomic_helper_page_flip,
+	.reset = drm_atomic_helper_crtc_reset,
+	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+};
+
+void qxl_user_framebuffer_destroy(struct drm_framebuffer *fb)
+{
+	struct qxl_framebuffer *qxl_fb = to_qxl_framebuffer(fb);
+	struct qxl_bo *bo = gem_to_qxl_bo(qxl_fb->obj);
+
+	WARN_ON(bo->shadow);
+	drm_gem_object_put_unlocked(qxl_fb->obj);
+	drm_framebuffer_cleanup(fb);
+	kfree(qxl_fb);
+}
+
+static int qxl_framebuffer_surface_dirty(struct drm_framebuffer *fb,
+					 struct drm_file *file_priv,
+					 unsigned flags, unsigned color,
+					 struct drm_clip_rect *clips,
+					 unsigned num_clips)
+{
+	/* TODO: vmwgfx where this was cribbed from had locking. Why? */
+	struct qxl_framebuffer *qxl_fb = to_qxl_framebuffer(fb);
+	struct qxl_device *qdev = qxl_fb->base.dev->dev_private;
+	struct drm_clip_rect norect;
+	struct qxl_bo *qobj;
+	int inc = 1;
+
+	drm_modeset_lock_all(fb->dev);
+
+	qobj = gem_to_qxl_bo(qxl_fb->obj);
+	/* if we aren't primary surface ignore this */
+	if (!qobj->is_primary) {
+		drm_modeset_unlock_all(fb->dev);
+		return 0;
+	}
+
+	if (!num_clips) {
+		num_clips = 1;
+		clips = &norect;
+		norect.x1 = norect.y1 = 0;
+		norect.x2 = fb->width;
+		norect.y2 = fb->height;
+	} else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
+		num_clips /= 2;
+		inc = 2; /* skip source rects */
+	}
+
+	qxl_draw_dirty_fb(qdev, qxl_fb, qobj, flags, color,
+			  clips, num_clips, inc);
+
+	drm_modeset_unlock_all(fb->dev);
+
+	return 0;
+}
+
+static const struct drm_framebuffer_funcs qxl_fb_funcs = {
+	.destroy = qxl_user_framebuffer_destroy,
+	.dirty = qxl_framebuffer_surface_dirty,
+/*	TODO?
+ *	.create_handle = qxl_user_framebuffer_create_handle, */
+};
+
+int
+qxl_framebuffer_init(struct drm_device *dev,
+		     struct qxl_framebuffer *qfb,
+		     const struct drm_mode_fb_cmd2 *mode_cmd,
+		     struct drm_gem_object *obj,
+		     const struct drm_framebuffer_funcs *funcs)
+{
+	int ret;
+
+	qfb->obj = obj;
+	drm_helper_mode_fill_fb_struct(dev, &qfb->base, mode_cmd);
+	ret = drm_framebuffer_init(dev, &qfb->base, funcs);
+	if (ret) {
+		qfb->obj = NULL;
+		return ret;
+	}
+	return 0;
+}
+
+static void qxl_crtc_atomic_enable(struct drm_crtc *crtc,
+				   struct drm_crtc_state *old_state)
+{
+	qxl_crtc_update_monitors_config(crtc, "enable");
+}
+
+static void qxl_crtc_atomic_disable(struct drm_crtc *crtc,
+				    struct drm_crtc_state *old_state)
+{
+	qxl_crtc_update_monitors_config(crtc, "disable");
+}
+
+static const struct drm_crtc_helper_funcs qxl_crtc_helper_funcs = {
+	.atomic_flush = qxl_crtc_atomic_flush,
+	.atomic_enable = qxl_crtc_atomic_enable,
+	.atomic_disable = qxl_crtc_atomic_disable,
+};
+
+static int qxl_primary_atomic_check(struct drm_plane *plane,
+				    struct drm_plane_state *state)
+{
+	struct qxl_device *qdev = plane->dev->dev_private;
+	struct qxl_framebuffer *qfb;
+	struct qxl_bo *bo;
+
+	if (!state->crtc || !state->fb)
+		return 0;
+
+	qfb = to_qxl_framebuffer(state->fb);
+	bo = gem_to_qxl_bo(qfb->obj);
+
+	if (bo->surf.stride * bo->surf.height > qdev->vram_size) {
+		DRM_ERROR("Mode doesn't fit in vram size (vgamem)");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int qxl_primary_apply_cursor(struct drm_plane *plane)
+{
+	struct drm_device *dev = plane->dev;
+	struct qxl_device *qdev = dev->dev_private;
+	struct drm_framebuffer *fb = plane->state->fb;
+	struct qxl_crtc *qcrtc = to_qxl_crtc(plane->state->crtc);
+	struct qxl_cursor_cmd *cmd;
+	struct qxl_release *release;
+	int ret = 0;
+
+	if (!qcrtc->cursor_bo)
+		return 0;
+
+	ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
+					 QXL_RELEASE_CURSOR_CMD,
+					 &release, NULL);
+	if (ret)
+		return ret;
+
+	ret = qxl_release_list_add(release, qcrtc->cursor_bo);
+	if (ret)
+		goto out_free_release;
+
+	ret = qxl_release_reserve_list(release, false);
+	if (ret)
+		goto out_free_release;
+
+	cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
+	cmd->type = QXL_CURSOR_SET;
+	cmd->u.set.position.x = plane->state->crtc_x + fb->hot_x;
+	cmd->u.set.position.y = plane->state->crtc_y + fb->hot_y;
+
+	cmd->u.set.shape = qxl_bo_physical_address(qdev, qcrtc->cursor_bo, 0);
+
+	cmd->u.set.visible = 1;
+	qxl_release_unmap(qdev, release, &cmd->release_info);
+
+	qxl_release_fence_buffer_objects(release);
+	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
+
+	return ret;
+
+out_free_release:
+	qxl_release_free(qdev, release);
+	return ret;
+}
+
+static void qxl_primary_atomic_update(struct drm_plane *plane,
+				      struct drm_plane_state *old_state)
+{
+	struct qxl_device *qdev = plane->dev->dev_private;
+	struct qxl_framebuffer *qfb =
+		to_qxl_framebuffer(plane->state->fb);
+	struct qxl_framebuffer *qfb_old;
+	struct qxl_bo *bo = gem_to_qxl_bo(qfb->obj);
+	struct qxl_bo *bo_old;
+	struct drm_clip_rect norect = {
+	    .x1 = 0,
+	    .y1 = 0,
+	    .x2 = qfb->base.width,
+	    .y2 = qfb->base.height
+	};
+	int ret;
+	bool same_shadow = false;
+
+	if (old_state->fb) {
+		qfb_old = to_qxl_framebuffer(old_state->fb);
+		bo_old = gem_to_qxl_bo(qfb_old->obj);
+	} else {
+		bo_old = NULL;
+	}
+
+	if (bo == bo_old)
+		return;
+
+	if (bo_old && bo_old->shadow && bo->shadow &&
+	    bo_old->shadow == bo->shadow) {
+		same_shadow = true;
+	}
+
+	if (bo_old && bo_old->is_primary) {
+		if (!same_shadow)
+			qxl_io_destroy_primary(qdev);
+		bo_old->is_primary = false;
+
+		ret = qxl_primary_apply_cursor(plane);
+		if (ret)
+			DRM_ERROR(
+			"could not set cursor after creating primary");
+	}
+
+	if (!bo->is_primary) {
+		if (!same_shadow)
+			qxl_io_create_primary(qdev, 0, bo);
+		bo->is_primary = true;
+	}
+
+	qxl_draw_dirty_fb(qdev, qfb, bo, 0, 0, &norect, 1, 1);
+}
+
+static void qxl_primary_atomic_disable(struct drm_plane *plane,
+				       struct drm_plane_state *old_state)
+{
+	struct qxl_device *qdev = plane->dev->dev_private;
+
+	if (old_state->fb) {
+		struct qxl_framebuffer *qfb =
+			to_qxl_framebuffer(old_state->fb);
+		struct qxl_bo *bo = gem_to_qxl_bo(qfb->obj);
+
+		if (bo->is_primary) {
+			qxl_io_destroy_primary(qdev);
+			bo->is_primary = false;
+		}
+	}
+}
+
+static void qxl_cursor_atomic_update(struct drm_plane *plane,
+				     struct drm_plane_state *old_state)
+{
+	struct drm_device *dev = plane->dev;
+	struct qxl_device *qdev = dev->dev_private;
+	struct drm_framebuffer *fb = plane->state->fb;
+	struct qxl_crtc *qcrtc = to_qxl_crtc(plane->state->crtc);
+	struct qxl_release *release;
+	struct qxl_cursor_cmd *cmd;
+	struct qxl_cursor *cursor;
+	struct drm_gem_object *obj;
+	struct qxl_bo *cursor_bo = NULL, *user_bo = NULL, *old_cursor_bo = NULL;
+	int ret;
+	void *user_ptr;
+	int size = 64*64*4;
+
+	ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
+					 QXL_RELEASE_CURSOR_CMD,
+					 &release, NULL);
+	if (ret)
+		return;
+
+	if (fb != old_state->fb) {
+		obj = to_qxl_framebuffer(fb)->obj;
+		user_bo = gem_to_qxl_bo(obj);
+
+		/* pinning is done in the prepare/cleanup framevbuffer */
+		ret = qxl_bo_kmap(user_bo, &user_ptr);
+		if (ret)
+			goto out_free_release;
+
+		ret = qxl_alloc_bo_reserved(qdev, release,
+					    sizeof(struct qxl_cursor) + size,
+					    &cursor_bo);
+		if (ret)
+			goto out_kunmap;
+
+		ret = qxl_release_reserve_list(release, true);
+		if (ret)
+			goto out_free_bo;
+
+		ret = qxl_bo_kmap(cursor_bo, (void **)&cursor);
+		if (ret)
+			goto out_backoff;
+
+		cursor->header.unique = 0;
+		cursor->header.type = SPICE_CURSOR_TYPE_ALPHA;
+		cursor->header.width = 64;
+		cursor->header.height = 64;
+		cursor->header.hot_spot_x = fb->hot_x;
+		cursor->header.hot_spot_y = fb->hot_y;
+		cursor->data_size = size;
+		cursor->chunk.next_chunk = 0;
+		cursor->chunk.prev_chunk = 0;
+		cursor->chunk.data_size = size;
+		memcpy(cursor->chunk.data, user_ptr, size);
+		qxl_bo_kunmap(cursor_bo);
+		qxl_bo_kunmap(user_bo);
+
+		cmd = (struct qxl_cursor_cmd *) qxl_release_map(qdev, release);
+		cmd->u.set.visible = 1;
+		cmd->u.set.shape = qxl_bo_physical_address(qdev,
+							   cursor_bo, 0);
+		cmd->type = QXL_CURSOR_SET;
+
+		old_cursor_bo = qcrtc->cursor_bo;
+		qcrtc->cursor_bo = cursor_bo;
+		cursor_bo = NULL;
+	} else {
+
+		ret = qxl_release_reserve_list(release, true);
+		if (ret)
+			goto out_free_release;
+
+		cmd = (struct qxl_cursor_cmd *) qxl_release_map(qdev, release);
+		cmd->type = QXL_CURSOR_MOVE;
+	}
+
+	cmd->u.position.x = plane->state->crtc_x + fb->hot_x;
+	cmd->u.position.y = plane->state->crtc_y + fb->hot_y;
+
+	qxl_release_unmap(qdev, release, &cmd->release_info);
+	qxl_release_fence_buffer_objects(release);
+	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
+
+	if (old_cursor_bo)
+		qxl_bo_unref(&old_cursor_bo);
+
+	qxl_bo_unref(&cursor_bo);
+
+	return;
+
+out_backoff:
+	qxl_release_backoff_reserve_list(release);
+out_free_bo:
+	qxl_bo_unref(&cursor_bo);
+out_kunmap:
+	qxl_bo_kunmap(user_bo);
+out_free_release:
+	qxl_release_free(qdev, release);
+	return;
+
+}
+
+static void qxl_cursor_atomic_disable(struct drm_plane *plane,
+				      struct drm_plane_state *old_state)
+{
+	struct qxl_device *qdev = plane->dev->dev_private;
+	struct qxl_release *release;
+	struct qxl_cursor_cmd *cmd;
+	int ret;
+
+	ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
+					 QXL_RELEASE_CURSOR_CMD,
+					 &release, NULL);
+	if (ret)
+		return;
+
+	ret = qxl_release_reserve_list(release, true);
+	if (ret) {
+		qxl_release_free(qdev, release);
+		return;
+	}
+
+	cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
+	cmd->type = QXL_CURSOR_HIDE;
+	qxl_release_unmap(qdev, release, &cmd->release_info);
+
+	qxl_release_fence_buffer_objects(release);
+	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
+}
+
+static int qxl_plane_prepare_fb(struct drm_plane *plane,
+				struct drm_plane_state *new_state)
+{
+	struct qxl_device *qdev = plane->dev->dev_private;
+	struct drm_gem_object *obj;
+	struct qxl_bo *user_bo, *old_bo = NULL;
+	int ret;
+
+	if (!new_state->fb)
+		return 0;
+
+	obj = to_qxl_framebuffer(new_state->fb)->obj;
+	user_bo = gem_to_qxl_bo(obj);
+
+	if (plane->type == DRM_PLANE_TYPE_PRIMARY &&
+	    user_bo->is_dumb && !user_bo->shadow) {
+		if (plane->state->fb) {
+			obj = to_qxl_framebuffer(plane->state->fb)->obj;
+			old_bo = gem_to_qxl_bo(obj);
+		}
+		if (old_bo && old_bo->shadow &&
+		    user_bo->gem_base.size == old_bo->gem_base.size &&
+		    plane->state->crtc     == new_state->crtc &&
+		    plane->state->crtc_w   == new_state->crtc_w &&
+		    plane->state->crtc_h   == new_state->crtc_h &&
+		    plane->state->src_x    == new_state->src_x &&
+		    plane->state->src_y    == new_state->src_y &&
+		    plane->state->src_w    == new_state->src_w &&
+		    plane->state->src_h    == new_state->src_h &&
+		    plane->state->rotation == new_state->rotation &&
+		    plane->state->zpos     == new_state->zpos) {
+			drm_gem_object_get(&old_bo->shadow->gem_base);
+			user_bo->shadow = old_bo->shadow;
+		} else {
+			qxl_bo_create(qdev, user_bo->gem_base.size,
+				      true, true, QXL_GEM_DOMAIN_VRAM, NULL,
+				      &user_bo->shadow);
+		}
+	}
+
+	ret = qxl_bo_pin(user_bo, QXL_GEM_DOMAIN_CPU, NULL);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static void qxl_plane_cleanup_fb(struct drm_plane *plane,
+				 struct drm_plane_state *old_state)
+{
+	struct drm_gem_object *obj;
+	struct qxl_bo *user_bo;
+
+	if (!old_state->fb) {
+		/*
+		 * we never executed prepare_fb, so there's nothing to
+		 * unpin.
+		 */
+		return;
+	}
+
+	obj = to_qxl_framebuffer(old_state->fb)->obj;
+	user_bo = gem_to_qxl_bo(obj);
+	qxl_bo_unpin(user_bo);
+
+	if (user_bo->shadow && !user_bo->is_primary) {
+		drm_gem_object_put_unlocked(&user_bo->shadow->gem_base);
+		user_bo->shadow = NULL;
+	}
+}
+
+static const uint32_t qxl_cursor_plane_formats[] = {
+	DRM_FORMAT_ARGB8888,
+};
+
+static const struct drm_plane_helper_funcs qxl_cursor_helper_funcs = {
+	.atomic_update = qxl_cursor_atomic_update,
+	.atomic_disable = qxl_cursor_atomic_disable,
+	.prepare_fb = qxl_plane_prepare_fb,
+	.cleanup_fb = qxl_plane_cleanup_fb,
+};
+
+static const struct drm_plane_funcs qxl_cursor_plane_funcs = {
+	.update_plane	= drm_atomic_helper_update_plane,
+	.disable_plane	= drm_atomic_helper_disable_plane,
+	.destroy	= drm_primary_helper_destroy,
+	.reset		= drm_atomic_helper_plane_reset,
+	.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+};
+
+static const uint32_t qxl_primary_plane_formats[] = {
+	DRM_FORMAT_XRGB8888,
+	DRM_FORMAT_ARGB8888,
+};
+
+static const struct drm_plane_helper_funcs primary_helper_funcs = {
+	.atomic_check = qxl_primary_atomic_check,
+	.atomic_update = qxl_primary_atomic_update,
+	.atomic_disable = qxl_primary_atomic_disable,
+	.prepare_fb = qxl_plane_prepare_fb,
+	.cleanup_fb = qxl_plane_cleanup_fb,
+};
+
+static const struct drm_plane_funcs qxl_primary_plane_funcs = {
+	.update_plane	= drm_atomic_helper_update_plane,
+	.disable_plane	= drm_atomic_helper_disable_plane,
+	.destroy	= drm_primary_helper_destroy,
+	.reset		= drm_atomic_helper_plane_reset,
+	.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+};
+
+static struct drm_plane *qxl_create_plane(struct qxl_device *qdev,
+					  unsigned int possible_crtcs,
+					  enum drm_plane_type type)
+{
+	const struct drm_plane_helper_funcs *helper_funcs = NULL;
+	struct drm_plane *plane;
+	const struct drm_plane_funcs *funcs;
+	const uint32_t *formats;
+	int num_formats;
+	int err;
+
+	if (type == DRM_PLANE_TYPE_PRIMARY) {
+		funcs = &qxl_primary_plane_funcs;
+		formats = qxl_primary_plane_formats;
+		num_formats = ARRAY_SIZE(qxl_primary_plane_formats);
+		helper_funcs = &primary_helper_funcs;
+	} else if (type == DRM_PLANE_TYPE_CURSOR) {
+		funcs = &qxl_cursor_plane_funcs;
+		formats = qxl_cursor_plane_formats;
+		helper_funcs = &qxl_cursor_helper_funcs;
+		num_formats = ARRAY_SIZE(qxl_cursor_plane_formats);
+	} else {
+		return ERR_PTR(-EINVAL);
+	}
+
+	plane = kzalloc(sizeof(*plane), GFP_KERNEL);
+	if (!plane)
+		return ERR_PTR(-ENOMEM);
+
+	err = drm_universal_plane_init(&qdev->ddev, plane, possible_crtcs,
+				       funcs, formats, num_formats,
+				       NULL, type, NULL);
+	if (err)
+		goto free_plane;
+
+	drm_plane_helper_add(plane, helper_funcs);
+
+	return plane;
+
+free_plane:
+	kfree(plane);
+	return ERR_PTR(-EINVAL);
+}
+
+static int qdev_crtc_init(struct drm_device *dev, int crtc_id)
+{
+	struct qxl_crtc *qxl_crtc;
+	struct drm_plane *primary, *cursor;
+	struct qxl_device *qdev = dev->dev_private;
+	int r;
+
+	qxl_crtc = kzalloc(sizeof(struct qxl_crtc), GFP_KERNEL);
+	if (!qxl_crtc)
+		return -ENOMEM;
+
+	primary = qxl_create_plane(qdev, 1 << crtc_id, DRM_PLANE_TYPE_PRIMARY);
+	if (IS_ERR(primary)) {
+		r = -ENOMEM;
+		goto free_mem;
+	}
+
+	cursor = qxl_create_plane(qdev, 1 << crtc_id, DRM_PLANE_TYPE_CURSOR);
+	if (IS_ERR(cursor)) {
+		r = -ENOMEM;
+		goto clean_primary;
+	}
+
+	r = drm_crtc_init_with_planes(dev, &qxl_crtc->base, primary, cursor,
+				      &qxl_crtc_funcs, NULL);
+	if (r)
+		goto clean_cursor;
+
+	qxl_crtc->index = crtc_id;
+	drm_crtc_helper_add(&qxl_crtc->base, &qxl_crtc_helper_funcs);
+	return 0;
+
+clean_cursor:
+	drm_plane_cleanup(cursor);
+	kfree(cursor);
+clean_primary:
+	drm_plane_cleanup(primary);
+	kfree(primary);
+free_mem:
+	kfree(qxl_crtc);
+	return r;
+}
+
+static int qxl_conn_get_modes(struct drm_connector *connector)
+{
+	unsigned pwidth = 1024;
+	unsigned pheight = 768;
+	int ret = 0;
+
+	ret = qxl_add_monitors_config_modes(connector, &pwidth, &pheight);
+	if (ret < 0)
+		return ret;
+	ret += qxl_add_common_modes(connector, pwidth, pheight);
+	return ret;
+}
+
+static enum drm_mode_status qxl_conn_mode_valid(struct drm_connector *connector,
+			       struct drm_display_mode *mode)
+{
+	struct drm_device *ddev = connector->dev;
+	struct qxl_device *qdev = ddev->dev_private;
+	int i;
+
+	/* TODO: is this called for user defined modes? (xrandr --add-mode)
+	 * TODO: check that the mode fits in the framebuffer */
+
+	if(qdev->monitors_config_width == mode->hdisplay &&
+	   qdev->monitors_config_height == mode->vdisplay)
+		return MODE_OK;
+
+	for (i = 0; i < ARRAY_SIZE(common_modes); i++) {
+		if (common_modes[i].w == mode->hdisplay && common_modes[i].h == mode->vdisplay)
+			return MODE_OK;
+	}
+	return MODE_BAD;
+}
+
+static struct drm_encoder *qxl_best_encoder(struct drm_connector *connector)
+{
+	struct qxl_output *qxl_output =
+		drm_connector_to_qxl_output(connector);
+
+	DRM_DEBUG("\n");
+	return &qxl_output->enc;
+}
+
+
+static const struct drm_encoder_helper_funcs qxl_enc_helper_funcs = {
+};
+
+static const struct drm_connector_helper_funcs qxl_connector_helper_funcs = {
+	.get_modes = qxl_conn_get_modes,
+	.mode_valid = qxl_conn_mode_valid,
+	.best_encoder = qxl_best_encoder,
+};
+
+static enum drm_connector_status qxl_conn_detect(
+			struct drm_connector *connector,
+			bool force)
+{
+	struct qxl_output *output =
+		drm_connector_to_qxl_output(connector);
+	struct drm_device *ddev = connector->dev;
+	struct qxl_device *qdev = ddev->dev_private;
+	bool connected = false;
+
+	/* The first monitor is always connected */
+	if (!qdev->client_monitors_config) {
+		if (output->index == 0)
+			connected = true;
+	} else
+		connected = qdev->client_monitors_config->count > output->index &&
+		     qxl_head_enabled(&qdev->client_monitors_config->heads[output->index]);
+
+	DRM_DEBUG("#%d connected: %d\n", output->index, connected);
+
+	return connected ? connector_status_connected
+			 : connector_status_disconnected;
+}
+
+static void qxl_conn_destroy(struct drm_connector *connector)
+{
+	struct qxl_output *qxl_output =
+		drm_connector_to_qxl_output(connector);
+
+	drm_connector_unregister(connector);
+	drm_connector_cleanup(connector);
+	kfree(qxl_output);
+}
+
+static const struct drm_connector_funcs qxl_connector_funcs = {
+	.dpms = drm_helper_connector_dpms,
+	.detect = qxl_conn_detect,
+	.fill_modes = drm_helper_probe_single_connector_modes,
+	.destroy = qxl_conn_destroy,
+	.reset = drm_atomic_helper_connector_reset,
+	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static void qxl_enc_destroy(struct drm_encoder *encoder)
+{
+	drm_encoder_cleanup(encoder);
+}
+
+static const struct drm_encoder_funcs qxl_enc_funcs = {
+	.destroy = qxl_enc_destroy,
+};
+
+static int qxl_mode_create_hotplug_mode_update_property(struct qxl_device *qdev)
+{
+	if (qdev->hotplug_mode_update_property)
+		return 0;
+
+	qdev->hotplug_mode_update_property =
+		drm_property_create_range(&qdev->ddev, DRM_MODE_PROP_IMMUTABLE,
+					  "hotplug_mode_update", 0, 1);
+
+	return 0;
+}
+
+static int qdev_output_init(struct drm_device *dev, int num_output)
+{
+	struct qxl_device *qdev = dev->dev_private;
+	struct qxl_output *qxl_output;
+	struct drm_connector *connector;
+	struct drm_encoder *encoder;
+
+	qxl_output = kzalloc(sizeof(struct qxl_output), GFP_KERNEL);
+	if (!qxl_output)
+		return -ENOMEM;
+
+	qxl_output->index = num_output;
+
+	connector = &qxl_output->base;
+	encoder = &qxl_output->enc;
+	drm_connector_init(dev, &qxl_output->base,
+			   &qxl_connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL);
+
+	drm_encoder_init(dev, &qxl_output->enc, &qxl_enc_funcs,
+			 DRM_MODE_ENCODER_VIRTUAL, NULL);
+
+	/* we get HPD via client monitors config */
+	connector->polled = DRM_CONNECTOR_POLL_HPD;
+	encoder->possible_crtcs = 1 << num_output;
+	drm_connector_attach_encoder(&qxl_output->base,
+					  &qxl_output->enc);
+	drm_encoder_helper_add(encoder, &qxl_enc_helper_funcs);
+	drm_connector_helper_add(connector, &qxl_connector_helper_funcs);
+
+	drm_object_attach_property(&connector->base,
+				   qdev->hotplug_mode_update_property, 0);
+	drm_object_attach_property(&connector->base,
+				   dev->mode_config.suggested_x_property, 0);
+	drm_object_attach_property(&connector->base,
+				   dev->mode_config.suggested_y_property, 0);
+	return 0;
+}
+
+static struct drm_framebuffer *
+qxl_user_framebuffer_create(struct drm_device *dev,
+			    struct drm_file *file_priv,
+			    const struct drm_mode_fb_cmd2 *mode_cmd)
+{
+	struct drm_gem_object *obj;
+	struct qxl_framebuffer *qxl_fb;
+	int ret;
+
+	obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]);
+	if (!obj)
+		return NULL;
+
+	qxl_fb = kzalloc(sizeof(*qxl_fb), GFP_KERNEL);
+	if (qxl_fb == NULL)
+		return NULL;
+
+	ret = qxl_framebuffer_init(dev, qxl_fb, mode_cmd, obj, &qxl_fb_funcs);
+	if (ret) {
+		kfree(qxl_fb);
+		drm_gem_object_put_unlocked(obj);
+		return NULL;
+	}
+
+	return &qxl_fb->base;
+}
+
+static const struct drm_mode_config_funcs qxl_mode_funcs = {
+	.fb_create = qxl_user_framebuffer_create,
+	.atomic_check = drm_atomic_helper_check,
+	.atomic_commit = drm_atomic_helper_commit,
+};
+
+int qxl_create_monitors_object(struct qxl_device *qdev)
+{
+	int ret;
+	struct drm_gem_object *gobj;
+	int max_allowed = qxl_num_crtc;
+	int monitors_config_size = sizeof(struct qxl_monitors_config) +
+		max_allowed * sizeof(struct qxl_head);
+
+	ret = qxl_gem_object_create(qdev, monitors_config_size, 0,
+				    QXL_GEM_DOMAIN_VRAM,
+				    false, false, NULL, &gobj);
+	if (ret) {
+		DRM_ERROR("%s: failed to create gem ret=%d\n", __func__, ret);
+		return -ENOMEM;
+	}
+	qdev->monitors_config_bo = gem_to_qxl_bo(gobj);
+
+	ret = qxl_bo_pin(qdev->monitors_config_bo, QXL_GEM_DOMAIN_VRAM, NULL);
+	if (ret)
+		return ret;
+
+	qxl_bo_kmap(qdev->monitors_config_bo, NULL);
+
+	qdev->monitors_config = qdev->monitors_config_bo->kptr;
+	qdev->ram_header->monitors_config =
+		qxl_bo_physical_address(qdev, qdev->monitors_config_bo, 0);
+
+	memset(qdev->monitors_config, 0, monitors_config_size);
+	qdev->monitors_config->max_allowed = max_allowed;
+	return 0;
+}
+
+int qxl_destroy_monitors_object(struct qxl_device *qdev)
+{
+	int ret;
+
+	qdev->monitors_config = NULL;
+	qdev->ram_header->monitors_config = 0;
+
+	qxl_bo_kunmap(qdev->monitors_config_bo);
+	ret = qxl_bo_unpin(qdev->monitors_config_bo);
+	if (ret)
+		return ret;
+
+	qxl_bo_unref(&qdev->monitors_config_bo);
+	return 0;
+}
+
+int qxl_modeset_init(struct qxl_device *qdev)
+{
+	int i;
+	int ret;
+
+	drm_mode_config_init(&qdev->ddev);
+
+	ret = qxl_create_monitors_object(qdev);
+	if (ret)
+		return ret;
+
+	qdev->ddev.mode_config.funcs = (void *)&qxl_mode_funcs;
+
+	/* modes will be validated against the framebuffer size */
+	qdev->ddev.mode_config.min_width = 0;
+	qdev->ddev.mode_config.min_height = 0;
+	qdev->ddev.mode_config.max_width = 8192;
+	qdev->ddev.mode_config.max_height = 8192;
+
+	qdev->ddev.mode_config.fb_base = qdev->vram_base;
+
+	drm_mode_create_suggested_offset_properties(&qdev->ddev);
+	qxl_mode_create_hotplug_mode_update_property(qdev);
+
+	for (i = 0 ; i < qxl_num_crtc; ++i) {
+		qdev_crtc_init(&qdev->ddev, i);
+		qdev_output_init(&qdev->ddev, i);
+	}
+
+	qxl_display_read_client_monitors_config(qdev);
+	qdev->mode_info.mode_config_initialized = true;
+
+	drm_mode_config_reset(&qdev->ddev);
+
+	/* primary surface must be created by this point, to allow
+	 * issuing command queue commands and having them read by
+	 * spice server. */
+	qxl_fbdev_init(qdev);
+	return 0;
+}
+
+void qxl_modeset_fini(struct qxl_device *qdev)
+{
+	qxl_fbdev_fini(qdev);
+
+	qxl_destroy_monitors_object(qdev);
+	if (qdev->mode_info.mode_config_initialized) {
+		drm_mode_config_cleanup(&qdev->ddev);
+		qdev->mode_info.mode_config_initialized = false;
+	}
+}