Adding upstream version 6.6.15.upstream/6.6.15

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

1 files changed, 1289 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..404b0483b
--- /dev/null
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@@ -0,0 +1,1289 @@
+/*
+ * 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 <linux/delay.h>
+#include <linux/iosys-map.h>
+
+#include <drm/drm_drv.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_framebuffer.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_plane_helper.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>
+#include <drm/drm_gem_atomic_helper.h>
+
+#include "qxl_drv.h"
+#include "qxl_object.h"
+
+static bool qxl_head_enabled(struct qxl_head *head)
+{
+	return head->width && head->height;
+}
+
+static int qxl_alloc_client_monitors_config(struct qxl_device *qdev,
+		unsigned int 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(
+				struct_size(qdev->client_monitors_config,
+				heads, count), GFP_KERNEL);
+		if (!qdev->client_monitors_config)
+			return -ENOMEM;
+	}
+	qdev->client_monitors_config->count = count;
+	return 0;
+}
+
+enum {
+	MONITORS_CONFIG_MODIFIED,
+	MONITORS_CONFIG_UNCHANGED,
+	MONITORS_CONFIG_BAD_CRC,
+	MONITORS_CONFIG_ERROR,
+};
+
+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 > qxl_num_crtc) {
+		DRM_DEBUG_KMS("client monitors list will be truncated: %d < %d\n",
+			      qxl_num_crtc, num_monitors);
+		num_monitors = qxl_num_crtc;
+	} 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;
+	}
+	if (qxl_alloc_client_monitors_config(qdev, num_monitors)) {
+		status = MONITORS_CONFIG_ERROR;
+		return status;
+	}
+	/* we copy max from the client but it isn't used */
+	qdev->client_monitors_config->max_allowed = qxl_num_crtc;
+	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;
+	struct drm_modeset_acquire_ctx ctx;
+	int status, retries, ret;
+
+	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_ERROR) {
+		DRM_DEBUG_KMS("ignoring client monitors config: error");
+		return;
+	}
+	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_BEGIN(dev, ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret);
+	qxl_update_offset_props(qdev);
+	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
+	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_check_mode(struct qxl_device *qdev,
+			  unsigned int width,
+			  unsigned int height)
+{
+	unsigned int stride;
+	unsigned int size;
+
+	if (check_mul_overflow(width, 4u, &stride))
+		return -EINVAL;
+	if (check_mul_overflow(stride, height, &size))
+		return -EINVAL;
+	if (size > qdev->vram_size)
+		return -ENOMEM;
+	return 0;
+}
+
+static int qxl_check_framebuffer(struct qxl_device *qdev,
+				 struct qxl_bo *bo)
+{
+	return qxl_check_mode(qdev, bo->surf.width, bo->surf.height);
+}
+
+static int qxl_add_mode(struct drm_connector *connector,
+			unsigned int width,
+			unsigned int height,
+			bool preferred)
+{
+	struct drm_device *dev = connector->dev;
+	struct qxl_device *qdev = to_qxl(dev);
+	struct drm_display_mode *mode = NULL;
+	int rc;
+
+	rc = qxl_check_mode(qdev, width, height);
+	if (rc != 0)
+		return 0;
+
+	mode = drm_cvt_mode(dev, width, height, 60, false, false, false);
+	if (preferred)
+		mode->type |= DRM_MODE_TYPE_PREFERRED;
+	mode->hdisplay = width;
+	mode->vdisplay = height;
+	drm_mode_set_name(mode);
+	drm_mode_probed_add(connector, mode);
+	return 1;
+}
+
+static int qxl_add_monitors_config_modes(struct drm_connector *connector)
+{
+	struct drm_device *dev = connector->dev;
+	struct qxl_device *qdev = to_qxl(dev);
+	struct qxl_output *output = drm_connector_to_qxl_output(connector);
+	int h = output->index;
+	struct qxl_head *head;
+
+	if (!qdev->monitors_config)
+		return 0;
+	if (h >= qxl_num_crtc)
+		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);
+
+	return qxl_add_mode(connector, head->width, head->height, true);
+}
+
+static struct mode_size {
+	int w;
+	int h;
+} extra_modes[] = {
+	{ 720,  480},
+	{1152,  768},
+	{1280,  854},
+};
+
+static int qxl_add_extra_modes(struct drm_connector *connector)
+{
+	int i, ret = 0;
+
+	for (i = 0; i < ARRAY_SIZE(extra_modes); i++)
+		ret += qxl_add_mode(connector,
+				    extra_modes[i].w,
+				    extra_modes[i].h,
+				    false);
+	return ret;
+}
+
+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 = to_qxl(dev);
+	struct qxl_crtc *qcrtc = to_qxl_crtc(crtc);
+	struct qxl_head head;
+	int oldcount, i = qcrtc->index;
+
+	if (!qdev->primary_bo) {
+		DRM_DEBUG_KMS("no primary surface, skip (%s)\n", reason);
+		return;
+	}
+
+	if (!qdev->monitors_config || qxl_num_crtc <= i)
+		return;
+
+	head.id = i;
+	head.flags = 0;
+	head.surface_id = 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;
+		if (qdev->primary_bo == qdev->dumb_shadow_bo)
+			head.x += qdev->dumb_heads[i].x;
+	} 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,
+			      qxl_num_crtc);
+
+	qdev->monitors_config->heads[i] = head;
+	qdev->monitors_config->max_allowed = qxl_num_crtc;
+	qxl_send_monitors_config(qdev);
+}
+
+static void qxl_crtc_atomic_flush(struct drm_crtc *crtc,
+				  struct drm_atomic_state *state)
+{
+	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,
+};
+
+static int qxl_framebuffer_surface_dirty(struct drm_framebuffer *fb,
+					 struct drm_file *file_priv,
+					 unsigned int flags, unsigned int color,
+					 struct drm_clip_rect *clips,
+					 unsigned int num_clips)
+{
+	/* TODO: vmwgfx where this was cribbed from had locking. Why? */
+	struct qxl_device *qdev = to_qxl(fb->dev);
+	struct drm_clip_rect norect;
+	struct qxl_bo *qobj;
+	struct drm_modeset_acquire_ctx ctx;
+	bool is_primary;
+	int inc = 1, ret;
+
+	DRM_MODESET_LOCK_ALL_BEGIN(fb->dev, ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret);
+
+	qobj = gem_to_qxl_bo(fb->obj[0]);
+	/* if we aren't primary surface ignore this */
+	is_primary = qobj->shadow ? qobj->shadow->is_primary : qobj->is_primary;
+	if (!is_primary)
+		goto out_lock_end;
+
+	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, fb, qobj, flags, color,
+			  clips, num_clips, inc, 0);
+
+out_lock_end:
+	DRM_MODESET_LOCK_ALL_END(fb->dev, ctx, ret);
+
+	return 0;
+}
+
+static const struct drm_framebuffer_funcs qxl_fb_funcs = {
+	.destroy = drm_gem_fb_destroy,
+	.dirty = qxl_framebuffer_surface_dirty,
+	.create_handle = drm_gem_fb_create_handle,
+};
+
+static void qxl_crtc_atomic_enable(struct drm_crtc *crtc,
+				   struct drm_atomic_state *state)
+{
+	qxl_crtc_update_monitors_config(crtc, "enable");
+}
+
+static void qxl_crtc_atomic_disable(struct drm_crtc *crtc,
+				    struct drm_atomic_state *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_atomic_state *state)
+{
+	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
+										 plane);
+	struct qxl_device *qdev = to_qxl(plane->dev);
+	struct qxl_bo *bo;
+
+	if (!new_plane_state->crtc || !new_plane_state->fb)
+		return 0;
+
+	bo = gem_to_qxl_bo(new_plane_state->fb->obj[0]);
+
+	return qxl_check_framebuffer(qdev, bo);
+}
+
+static int qxl_primary_apply_cursor(struct qxl_device *qdev,
+				    struct drm_plane_state *plane_state)
+{
+	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 int qxl_primary_move_cursor(struct qxl_device *qdev,
+				   struct drm_plane_state *plane_state)
+{
+	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_reserve_list(release, true);
+	if (ret) {
+		qxl_release_free(qdev, release);
+		return ret;
+	}
+
+	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);
+	return ret;
+}
+
+static struct qxl_bo *qxl_create_cursor(struct qxl_device *qdev,
+					struct qxl_bo *user_bo,
+					int hot_x, int hot_y)
+{
+	static const u32 size = 64 * 64 * 4;
+	struct qxl_bo *cursor_bo;
+	struct iosys_map cursor_map;
+	struct iosys_map user_map;
+	struct qxl_cursor cursor;
+	int ret;
+
+	if (!user_bo)
+		return NULL;
+
+	ret = qxl_bo_create(qdev, sizeof(struct qxl_cursor) + size,
+			    false, true, QXL_GEM_DOMAIN_VRAM, 1,
+			    NULL, &cursor_bo);
+	if (ret)
+		goto err;
+
+	ret = qxl_bo_vmap(cursor_bo, &cursor_map);
+	if (ret)
+		goto err_unref;
+
+	ret = qxl_bo_vmap(user_bo, &user_map);
+	if (ret)
+		goto err_unmap;
+
+	cursor.header.unique = 0;
+	cursor.header.type = SPICE_CURSOR_TYPE_ALPHA;
+	cursor.header.width = 64;
+	cursor.header.height = 64;
+	cursor.header.hot_spot_x = hot_x;
+	cursor.header.hot_spot_y = hot_y;
+	cursor.data_size = size;
+	cursor.chunk.next_chunk = 0;
+	cursor.chunk.prev_chunk = 0;
+	cursor.chunk.data_size = size;
+	if (cursor_map.is_iomem) {
+		memcpy_toio(cursor_map.vaddr_iomem,
+			    &cursor, sizeof(cursor));
+		memcpy_toio(cursor_map.vaddr_iomem + sizeof(cursor),
+			    user_map.vaddr, size);
+	} else {
+		memcpy(cursor_map.vaddr,
+		       &cursor, sizeof(cursor));
+		memcpy(cursor_map.vaddr + sizeof(cursor),
+		       user_map.vaddr, size);
+	}
+
+	qxl_bo_vunmap(user_bo);
+	qxl_bo_vunmap(cursor_bo);
+	return cursor_bo;
+
+err_unmap:
+	qxl_bo_vunmap(cursor_bo);
+err_unref:
+	qxl_bo_unpin(cursor_bo);
+	qxl_bo_unref(&cursor_bo);
+err:
+	return NULL;
+}
+
+static void qxl_free_cursor(struct qxl_bo *cursor_bo)
+{
+	if (!cursor_bo)
+		return;
+
+	qxl_bo_unpin(cursor_bo);
+	qxl_bo_unref(&cursor_bo);
+}
+
+static void qxl_primary_atomic_update(struct drm_plane *plane,
+				      struct drm_atomic_state *state)
+{
+	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
+									   plane);
+	struct qxl_device *qdev = to_qxl(plane->dev);
+	struct qxl_bo *bo = gem_to_qxl_bo(new_state->fb->obj[0]);
+	struct qxl_bo *primary;
+	struct drm_clip_rect norect = {
+	    .x1 = 0,
+	    .y1 = 0,
+	    .x2 = new_state->fb->width,
+	    .y2 = new_state->fb->height
+	};
+	uint32_t dumb_shadow_offset = 0;
+
+	primary = bo->shadow ? bo->shadow : bo;
+
+	if (!primary->is_primary) {
+		if (qdev->primary_bo)
+			qxl_io_destroy_primary(qdev);
+		qxl_io_create_primary(qdev, primary);
+		qxl_primary_apply_cursor(qdev, plane->state);
+	}
+
+	if (bo->is_dumb)
+		dumb_shadow_offset =
+			qdev->dumb_heads[new_state->crtc->index].x;
+
+	qxl_draw_dirty_fb(qdev, new_state->fb, bo, 0, 0, &norect, 1, 1,
+			  dumb_shadow_offset);
+}
+
+static void qxl_primary_atomic_disable(struct drm_plane *plane,
+				       struct drm_atomic_state *state)
+{
+	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
+									   plane);
+	struct qxl_device *qdev = to_qxl(plane->dev);
+
+	if (old_state->fb) {
+		struct qxl_bo *bo = gem_to_qxl_bo(old_state->fb->obj[0]);
+
+		if (bo->shadow)
+			bo = bo->shadow;
+		if (bo->is_primary)
+			qxl_io_destroy_primary(qdev);
+	}
+}
+
+static void qxl_cursor_atomic_update(struct drm_plane *plane,
+				     struct drm_atomic_state *state)
+{
+	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
+									   plane);
+	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
+									   plane);
+	struct qxl_device *qdev = to_qxl(plane->dev);
+	struct drm_framebuffer *fb = new_state->fb;
+
+	if (fb != old_state->fb) {
+		qxl_primary_apply_cursor(qdev, new_state);
+	} else {
+		qxl_primary_move_cursor(qdev, new_state);
+	}
+}
+
+static void qxl_cursor_atomic_disable(struct drm_plane *plane,
+				      struct drm_atomic_state *state)
+{
+	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
+									   plane);
+	struct qxl_device *qdev = to_qxl(plane->dev);
+	struct qxl_crtc *qcrtc;
+	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);
+
+	qcrtc = to_qxl_crtc(old_state->crtc);
+	qxl_free_cursor(qcrtc->cursor_bo);
+	qcrtc->cursor_bo = NULL;
+}
+
+static void qxl_update_dumb_head(struct qxl_device *qdev,
+				 int index, struct qxl_bo *bo)
+{
+	uint32_t width, height;
+
+	if (index >= qdev->monitors_config->max_allowed)
+		return;
+
+	if (bo && bo->is_dumb) {
+		width = bo->surf.width;
+		height = bo->surf.height;
+	} else {
+		width = 0;
+		height = 0;
+	}
+
+	if (qdev->dumb_heads[index].width == width &&
+	    qdev->dumb_heads[index].height == height)
+		return;
+
+	DRM_DEBUG("#%d: %dx%d -> %dx%d\n", index,
+		  qdev->dumb_heads[index].width,
+		  qdev->dumb_heads[index].height,
+		  width, height);
+	qdev->dumb_heads[index].width = width;
+	qdev->dumb_heads[index].height = height;
+}
+
+static void qxl_calc_dumb_shadow(struct qxl_device *qdev,
+				 struct qxl_surface *surf)
+{
+	struct qxl_head *head;
+	int i;
+
+	memset(surf, 0, sizeof(*surf));
+	for (i = 0; i < qdev->monitors_config->max_allowed; i++) {
+		head = qdev->dumb_heads + i;
+		head->x = surf->width;
+		surf->width += head->width;
+		if (surf->height < head->height)
+			surf->height = head->height;
+	}
+	if (surf->width < 64)
+		surf->width = 64;
+	if (surf->height < 64)
+		surf->height = 64;
+	surf->format = SPICE_SURFACE_FMT_32_xRGB;
+	surf->stride = surf->width * 4;
+
+	if (!qdev->dumb_shadow_bo ||
+	    qdev->dumb_shadow_bo->surf.width != surf->width ||
+	    qdev->dumb_shadow_bo->surf.height != surf->height)
+		DRM_DEBUG("%dx%d\n", surf->width, surf->height);
+}
+
+static void qxl_prepare_shadow(struct qxl_device *qdev, struct qxl_bo *user_bo,
+			       int crtc_index)
+{
+	struct qxl_surface surf;
+
+	qxl_update_dumb_head(qdev, crtc_index,
+			     user_bo);
+	qxl_calc_dumb_shadow(qdev, &surf);
+	if (!qdev->dumb_shadow_bo ||
+	    qdev->dumb_shadow_bo->surf.width  != surf.width ||
+	    qdev->dumb_shadow_bo->surf.height != surf.height) {
+		if (qdev->dumb_shadow_bo) {
+			qxl_bo_unpin(qdev->dumb_shadow_bo);
+			drm_gem_object_put
+				(&qdev->dumb_shadow_bo->tbo.base);
+			qdev->dumb_shadow_bo = NULL;
+		}
+		qxl_bo_create(qdev, surf.height * surf.stride,
+			      true, true, QXL_GEM_DOMAIN_SURFACE, 0,
+			      &surf, &qdev->dumb_shadow_bo);
+	}
+	if (user_bo->shadow != qdev->dumb_shadow_bo) {
+		if (user_bo->shadow) {
+			qxl_bo_unpin(user_bo->shadow);
+			drm_gem_object_put
+				(&user_bo->shadow->tbo.base);
+			user_bo->shadow = NULL;
+		}
+		drm_gem_object_get(&qdev->dumb_shadow_bo->tbo.base);
+		user_bo->shadow = qdev->dumb_shadow_bo;
+		qxl_bo_pin(user_bo->shadow);
+	}
+}
+
+static int qxl_plane_prepare_fb(struct drm_plane *plane,
+				struct drm_plane_state *new_state)
+{
+	struct qxl_device *qdev = to_qxl(plane->dev);
+	struct drm_gem_object *obj;
+	struct qxl_bo *user_bo;
+	int ret;
+
+	if (!new_state->fb)
+		return 0;
+
+	obj = new_state->fb->obj[0];
+	user_bo = gem_to_qxl_bo(obj);
+
+	if (plane->type == DRM_PLANE_TYPE_PRIMARY &&
+	    user_bo->is_dumb) {
+		qxl_prepare_shadow(qdev, user_bo, new_state->crtc->index);
+	}
+
+	if (plane->type == DRM_PLANE_TYPE_CURSOR &&
+	    plane->state->fb != new_state->fb) {
+		struct qxl_crtc *qcrtc = to_qxl_crtc(new_state->crtc);
+		struct qxl_bo *old_cursor_bo = qcrtc->cursor_bo;
+
+		qcrtc->cursor_bo = qxl_create_cursor(qdev, user_bo,
+						     new_state->fb->hot_x,
+						     new_state->fb->hot_y);
+		qxl_free_cursor(old_cursor_bo);
+	}
+
+	ret = qxl_bo_pin(user_bo);
+	if (ret)
+		return ret;
+
+	return drm_gem_plane_helper_prepare_fb(plane, new_state);
+}
+
+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 = old_state->fb->obj[0];
+	user_bo = gem_to_qxl_bo(obj);
+	qxl_bo_unpin(user_bo);
+
+	if (old_state->fb != plane->state->fb && user_bo->shadow) {
+		qxl_bo_unpin(user_bo->shadow);
+		drm_gem_object_put(&user_bo->shadow->tbo.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_plane_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_plane_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 = to_qxl(dev);
+	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)
+{
+	struct drm_device *dev = connector->dev;
+	struct qxl_device *qdev = to_qxl(dev);
+	struct qxl_output *output = drm_connector_to_qxl_output(connector);
+	unsigned int pwidth = 1024;
+	unsigned int pheight = 768;
+	int ret = 0;
+
+	if (qdev->client_monitors_config) {
+		struct qxl_head *head;
+		head = &qdev->client_monitors_config->heads[output->index];
+		if (head->width)
+			pwidth = head->width;
+		if (head->height)
+			pheight = head->height;
+	}
+
+	ret += drm_add_modes_noedid(connector, 8192, 8192);
+	ret += qxl_add_extra_modes(connector);
+	ret += qxl_add_monitors_config_modes(connector);
+	drm_set_preferred_mode(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 = to_qxl(ddev);
+
+	if (qxl_check_mode(qdev, mode->hdisplay, mode->vdisplay) != 0)
+		return MODE_BAD;
+
+	return MODE_OK;
+}
+
+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_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 = to_qxl(ddev);
+	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 = {
+	.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 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 = to_qxl(dev);
+	struct qxl_output *qxl_output;
+	struct drm_connector *connector;
+	struct drm_encoder *encoder;
+	int ret;
+
+	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);
+
+	ret = drm_simple_encoder_init(dev, &qxl_output->enc,
+				      DRM_MODE_ENCODER_VIRTUAL);
+	if (ret) {
+		drm_err(dev, "drm_simple_encoder_init() failed, error %d\n",
+			ret);
+		goto err_drm_connector_cleanup;
+	}
+
+	/* 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_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;
+
+err_drm_connector_cleanup:
+	drm_connector_cleanup(&qxl_output->base);
+	kfree(qxl_output);
+	return ret;
+}
+
+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)
+{
+	return drm_gem_fb_create_with_funcs(dev, file_priv, mode_cmd,
+					    &qxl_fb_funcs);
+}
+
+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;
+	struct iosys_map map;
+	int monitors_config_size = sizeof(struct qxl_monitors_config) +
+		qxl_num_crtc * 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_vmap(qdev->monitors_config_bo, &map);
+	if (ret)
+		return ret;
+
+	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->dumb_heads = kcalloc(qxl_num_crtc, sizeof(qdev->dumb_heads[0]),
+				   GFP_KERNEL);
+	if (!qdev->dumb_heads) {
+		qxl_destroy_monitors_object(qdev);
+		return -ENOMEM;
+	}
+	return 0;
+}
+
+int qxl_destroy_monitors_object(struct qxl_device *qdev)
+{
+	int ret;
+
+	if (!qdev->monitors_config_bo)
+		return 0;
+
+	kfree(qdev->dumb_heads);
+	qdev->dumb_heads = NULL;
+
+	qdev->monitors_config = NULL;
+	qdev->ram_header->monitors_config = 0;
+
+	ret = qxl_bo_vunmap(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;
+
+	ret = drmm_mode_config_init(&qdev->ddev);
+	if (ret)
+		return ret;
+
+	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;
+
+	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);
+
+	drm_mode_config_reset(&qdev->ddev);
+	return 0;
+}
+
+void qxl_modeset_fini(struct qxl_device *qdev)
+{
+	if (qdev->dumb_shadow_bo) {
+		qxl_bo_unpin(qdev->dumb_shadow_bo);
+		drm_gem_object_put(&qdev->dumb_shadow_bo->tbo.base);
+		qdev->dumb_shadow_bo = NULL;
+	}
+	qxl_destroy_monitors_object(qdev);
+}