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qxl_display.c

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linux-6.19.14/drivers/gpu/drm/qxl/qxl_display.c C 
   1/*
   2 * Copyright 2013 Red Hat Inc.
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice shall be included in
  12 * all copies or substantial portions of the Software.
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20 * OTHER DEALINGS IN THE SOFTWARE.
  21 *
  22 * Authors: Dave Airlie
  23 *          Alon Levy
  24 */
  25
  26#include <linux/crc32.h>
  27#include <linux/delay.h>
  28#include <linux/iosys-map.h>
  29
  30#include <drm/drm_drv.h>
  31#include <drm/drm_atomic.h>
  32#include <drm/drm_atomic_helper.h>
  33#include <drm/drm_edid.h>
  34#include <drm/drm_framebuffer.h>
  35#include <drm/drm_gem_framebuffer_helper.h>
  36#include <drm/drm_plane_helper.h>
  37#include <drm/drm_print.h>
  38#include <drm/drm_probe_helper.h>
  39#include <drm/drm_simple_kms_helper.h>
  40#include <drm/drm_gem_atomic_helper.h>
  41#include <drm/drm_vblank.h>
  42#include <drm/drm_vblank_helper.h>
  43
  44#include "qxl_drv.h"
  45#include "qxl_object.h"
  46
  47static bool qxl_head_enabled(struct qxl_head *head)
  48{
  49	return head->width && head->height;
  50}
  51
  52static int qxl_alloc_client_monitors_config(struct qxl_device *qdev,
  53		unsigned int count)
  54{
  55	if (qdev->client_monitors_config &&
  56	    count > qdev->client_monitors_config->count) {
  57		kfree(qdev->client_monitors_config);
  58		qdev->client_monitors_config = NULL;
  59	}
  60	if (!qdev->client_monitors_config) {
  61		qdev->client_monitors_config = kzalloc(
  62				struct_size(qdev->client_monitors_config,
  63				heads, count), GFP_KERNEL);
  64		if (!qdev->client_monitors_config)
  65			return -ENOMEM;
  66	}
  67	qdev->client_monitors_config->count = count;
  68	return 0;
  69}
  70
  71enum {
  72	MONITORS_CONFIG_MODIFIED,
  73	MONITORS_CONFIG_UNCHANGED,
  74	MONITORS_CONFIG_BAD_CRC,
  75	MONITORS_CONFIG_ERROR,
  76};
  77
  78static int qxl_display_copy_rom_client_monitors_config(struct qxl_device *qdev)
  79{
  80	int i;
  81	int num_monitors;
  82	uint32_t crc;
  83	int status = MONITORS_CONFIG_UNCHANGED;
  84
  85	num_monitors = qdev->rom->client_monitors_config.count;
  86	crc = crc32(0, (const uint8_t *)&qdev->rom->client_monitors_config,
  87		  sizeof(qdev->rom->client_monitors_config));
  88	if (crc != qdev->rom->client_monitors_config_crc)
  89		return MONITORS_CONFIG_BAD_CRC;
  90	if (!num_monitors) {
  91		DRM_DEBUG_KMS("no client monitors configured\n");
  92		return status;
  93	}
  94	if (num_monitors > qxl_num_crtc) {
  95		DRM_DEBUG_KMS("client monitors list will be truncated: %d < %d\n",
  96			      qxl_num_crtc, num_monitors);
  97		num_monitors = qxl_num_crtc;
  98	} else {
  99		num_monitors = qdev->rom->client_monitors_config.count;
 100	}
 101	if (qdev->client_monitors_config
 102	      && (num_monitors != qdev->client_monitors_config->count)) {
 103		status = MONITORS_CONFIG_MODIFIED;
 104	}
 105	if (qxl_alloc_client_monitors_config(qdev, num_monitors)) {
 106		status = MONITORS_CONFIG_ERROR;
 107		return status;
 108	}
 109	/* we copy max from the client but it isn't used */
 110	qdev->client_monitors_config->max_allowed = qxl_num_crtc;
 111	for (i = 0 ; i < qdev->client_monitors_config->count ; ++i) {
 112		struct qxl_urect *c_rect =
 113			&qdev->rom->client_monitors_config.heads[i];
 114		struct qxl_head *client_head =
 115			&qdev->client_monitors_config->heads[i];
 116		if (client_head->x != c_rect->left) {
 117			client_head->x = c_rect->left;
 118			status = MONITORS_CONFIG_MODIFIED;
 119		}
 120		if (client_head->y != c_rect->top) {
 121			client_head->y = c_rect->top;
 122			status = MONITORS_CONFIG_MODIFIED;
 123		}
 124		if (client_head->width != c_rect->right - c_rect->left) {
 125			client_head->width = c_rect->right - c_rect->left;
 126			status = MONITORS_CONFIG_MODIFIED;
 127		}
 128		if (client_head->height != c_rect->bottom - c_rect->top) {
 129			client_head->height = c_rect->bottom - c_rect->top;
 130			status = MONITORS_CONFIG_MODIFIED;
 131		}
 132		if (client_head->surface_id != 0) {
 133			client_head->surface_id = 0;
 134			status = MONITORS_CONFIG_MODIFIED;
 135		}
 136		if (client_head->id != i) {
 137			client_head->id = i;
 138			status = MONITORS_CONFIG_MODIFIED;
 139		}
 140		if (client_head->flags != 0) {
 141			client_head->flags = 0;
 142			status = MONITORS_CONFIG_MODIFIED;
 143		}
 144		DRM_DEBUG_KMS("read %dx%d+%d+%d\n", client_head->width, client_head->height,
 145			  client_head->x, client_head->y);
 146	}
 147
 148	return status;
 149}
 150
 151static void qxl_update_offset_props(struct qxl_device *qdev)
 152{
 153	struct drm_device *dev = &qdev->ddev;
 154	struct drm_connector *connector;
 155	struct qxl_output *output;
 156	struct qxl_head *head;
 157
 158	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 159		output = drm_connector_to_qxl_output(connector);
 160
 161		head = &qdev->client_monitors_config->heads[output->index];
 162
 163		drm_object_property_set_value(&connector->base,
 164			dev->mode_config.suggested_x_property, head->x);
 165		drm_object_property_set_value(&connector->base,
 166			dev->mode_config.suggested_y_property, head->y);
 167	}
 168}
 169
 170void qxl_display_read_client_monitors_config(struct qxl_device *qdev)
 171{
 172	struct drm_device *dev = &qdev->ddev;
 173	struct drm_modeset_acquire_ctx ctx;
 174	int status, retries, ret;
 175
 176	for (retries = 0; retries < 10; retries++) {
 177		status = qxl_display_copy_rom_client_monitors_config(qdev);
 178		if (status != MONITORS_CONFIG_BAD_CRC)
 179			break;
 180		udelay(5);
 181	}
 182	if (status == MONITORS_CONFIG_ERROR) {
 183		DRM_DEBUG_KMS("ignoring client monitors config: error");
 184		return;
 185	}
 186	if (status == MONITORS_CONFIG_BAD_CRC) {
 187		DRM_DEBUG_KMS("ignoring client monitors config: bad crc");
 188		return;
 189	}
 190	if (status == MONITORS_CONFIG_UNCHANGED) {
 191		DRM_DEBUG_KMS("ignoring client monitors config: unchanged");
 192		return;
 193	}
 194
 195	DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret);
 196	qxl_update_offset_props(qdev);
 197	DRM_MODESET_LOCK_ALL_END(dev, ctx, ret);
 198	if (!drm_helper_hpd_irq_event(dev)) {
 199		/* notify that the monitor configuration changed, to
 200		   adjust at the arbitrary resolution */
 201		drm_kms_helper_hotplug_event(dev);
 202	}
 203}
 204
 205static int qxl_check_mode(struct qxl_device *qdev,
 206			  unsigned int width,
 207			  unsigned int height)
 208{
 209	unsigned int stride;
 210	unsigned int size;
 211
 212	if (check_mul_overflow(width, 4u, &stride))
 213		return -EINVAL;
 214	if (check_mul_overflow(stride, height, &size))
 215		return -EINVAL;
 216	if (size > qdev->vram_size)
 217		return -ENOMEM;
 218	return 0;
 219}
 220
 221static int qxl_check_framebuffer(struct qxl_device *qdev,
 222				 struct qxl_bo *bo)
 223{
 224	return qxl_check_mode(qdev, bo->surf.width, bo->surf.height);
 225}
 226
 227static int qxl_add_mode(struct drm_connector *connector,
 228			unsigned int width,
 229			unsigned int height,
 230			bool preferred)
 231{
 232	struct drm_device *dev = connector->dev;
 233	struct qxl_device *qdev = to_qxl(dev);
 234	struct drm_display_mode *mode = NULL;
 235	int rc;
 236
 237	rc = qxl_check_mode(qdev, width, height);
 238	if (rc != 0)
 239		return 0;
 240
 241	mode = drm_cvt_mode(dev, width, height, 60, false, false, false);
 242	if (!mode)
 243		return 0;
 244
 245	if (preferred)
 246		mode->type |= DRM_MODE_TYPE_PREFERRED;
 247	mode->hdisplay = width;
 248	mode->vdisplay = height;
 249	drm_mode_set_name(mode);
 250	drm_mode_probed_add(connector, mode);
 251	return 1;
 252}
 253
 254static int qxl_add_monitors_config_modes(struct drm_connector *connector)
 255{
 256	struct drm_device *dev = connector->dev;
 257	struct qxl_device *qdev = to_qxl(dev);
 258	struct qxl_output *output = drm_connector_to_qxl_output(connector);
 259	int h = output->index;
 260	struct qxl_head *head;
 261
 262	if (!qdev->monitors_config)
 263		return 0;
 264	if (h >= qxl_num_crtc)
 265		return 0;
 266	if (!qdev->client_monitors_config)
 267		return 0;
 268	if (h >= qdev->client_monitors_config->count)
 269		return 0;
 270
 271	head = &qdev->client_monitors_config->heads[h];
 272	DRM_DEBUG_KMS("head %d is %dx%d\n", h, head->width, head->height);
 273
 274	return qxl_add_mode(connector, head->width, head->height, true);
 275}
 276
 277static struct mode_size {
 278	int w;
 279	int h;
 280} extra_modes[] = {
 281	{ 720,  480},
 282	{1152,  768},
 283	{1280,  854},
 284};
 285
 286static int qxl_add_extra_modes(struct drm_connector *connector)
 287{
 288	int i, ret = 0;
 289
 290	for (i = 0; i < ARRAY_SIZE(extra_modes); i++)
 291		ret += qxl_add_mode(connector,
 292				    extra_modes[i].w,
 293				    extra_modes[i].h,
 294				    false);
 295	return ret;
 296}
 297
 298static void qxl_send_monitors_config(struct qxl_device *qdev)
 299{
 300	int i;
 301
 302	BUG_ON(!qdev->ram_header->monitors_config);
 303
 304	if (qdev->monitors_config->count == 0)
 305		return;
 306
 307	for (i = 0 ; i < qdev->monitors_config->count ; ++i) {
 308		struct qxl_head *head = &qdev->monitors_config->heads[i];
 309
 310		if (head->y > 8192 || head->x > 8192 ||
 311		    head->width > 8192 || head->height > 8192) {
 312			DRM_ERROR("head %d wrong: %dx%d+%d+%d\n",
 313				  i, head->width, head->height,
 314				  head->x, head->y);
 315			return;
 316		}
 317	}
 318	qxl_io_monitors_config(qdev);
 319}
 320
 321static void qxl_crtc_update_monitors_config(struct drm_crtc *crtc,
 322					    const char *reason)
 323{
 324	struct drm_device *dev = crtc->dev;
 325	struct qxl_device *qdev = to_qxl(dev);
 326	struct qxl_crtc *qcrtc = to_qxl_crtc(crtc);
 327	struct qxl_head head;
 328	int oldcount, i = qcrtc->index;
 329
 330	if (!qdev->primary_bo) {
 331		DRM_DEBUG_KMS("no primary surface, skip (%s)\n", reason);
 332		return;
 333	}
 334
 335	if (!qdev->monitors_config || qxl_num_crtc <= i)
 336		return;
 337
 338	head.id = i;
 339	head.flags = 0;
 340	head.surface_id = 0;
 341	oldcount = qdev->monitors_config->count;
 342	if (crtc->state->active) {
 343		struct drm_display_mode *mode = &crtc->mode;
 344
 345		head.width = mode->hdisplay;
 346		head.height = mode->vdisplay;
 347		head.x = crtc->x;
 348		head.y = crtc->y;
 349		if (qdev->monitors_config->count < i + 1)
 350			qdev->monitors_config->count = i + 1;
 351		if (qdev->primary_bo == qdev->dumb_shadow_bo)
 352			head.x += qdev->dumb_heads[i].x;
 353	} else if (i > 0) {
 354		head.width = 0;
 355		head.height = 0;
 356		head.x = 0;
 357		head.y = 0;
 358		if (qdev->monitors_config->count == i + 1)
 359			qdev->monitors_config->count = i;
 360	} else {
 361		DRM_DEBUG_KMS("inactive head 0, skip (%s)\n", reason);
 362		return;
 363	}
 364
 365	if (head.width  == qdev->monitors_config->heads[i].width  &&
 366	    head.height == qdev->monitors_config->heads[i].height &&
 367	    head.x      == qdev->monitors_config->heads[i].x      &&
 368	    head.y      == qdev->monitors_config->heads[i].y      &&
 369	    oldcount    == qdev->monitors_config->count)
 370		return;
 371
 372	DRM_DEBUG_KMS("head %d, %dx%d, at +%d+%d, %s (%s)\n",
 373		      i, head.width, head.height, head.x, head.y,
 374		      crtc->state->active ? "on" : "off", reason);
 375	if (oldcount != qdev->monitors_config->count)
 376		DRM_DEBUG_KMS("active heads %d -> %d (%d total)\n",
 377			      oldcount, qdev->monitors_config->count,
 378			      qxl_num_crtc);
 379
 380	qdev->monitors_config->heads[i] = head;
 381	qdev->monitors_config->max_allowed = qxl_num_crtc;
 382	qxl_send_monitors_config(qdev);
 383}
 384
 385static void qxl_crtc_atomic_flush(struct drm_crtc *crtc,
 386				  struct drm_atomic_state *state)
 387{
 388	struct drm_device *dev = crtc->dev;
 389	struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
 390	struct drm_pending_vblank_event *event;
 391
 392	qxl_crtc_update_monitors_config(crtc, "flush");
 393
 394	spin_lock_irq(&dev->event_lock);
 395
 396	event = crtc_state->event;
 397	crtc_state->event = NULL;
 398
 399	if (event) {
 400		if (drm_crtc_vblank_get(crtc) == 0)
 401			drm_crtc_arm_vblank_event(crtc, event);
 402		else
 403			drm_crtc_send_vblank_event(crtc, event);
 404	}
 405
 406	spin_unlock_irq(&dev->event_lock);
 407}
 408
 409static void qxl_crtc_destroy(struct drm_crtc *crtc)
 410{
 411	struct qxl_crtc *qxl_crtc = to_qxl_crtc(crtc);
 412
 413	qxl_bo_unref(&qxl_crtc->cursor_bo);
 414	drm_crtc_cleanup(crtc);
 415	kfree(qxl_crtc);
 416}
 417
 418static const struct drm_crtc_funcs qxl_crtc_funcs = {
 419	.set_config = drm_atomic_helper_set_config,
 420	.destroy = qxl_crtc_destroy,
 421	.page_flip = drm_atomic_helper_page_flip,
 422	.reset = drm_atomic_helper_crtc_reset,
 423	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
 424	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
 425	DRM_CRTC_VBLANK_TIMER_FUNCS,
 426};
 427
 428static int qxl_framebuffer_surface_dirty(struct drm_framebuffer *fb,
 429					 struct drm_file *file_priv,
 430					 unsigned int flags, unsigned int color,
 431					 struct drm_clip_rect *clips,
 432					 unsigned int num_clips)
 433{
 434	/* TODO: vmwgfx where this was cribbed from had locking. Why? */
 435	struct qxl_device *qdev = to_qxl(fb->dev);
 436	struct drm_clip_rect norect;
 437	struct qxl_bo *qobj;
 438	struct drm_modeset_acquire_ctx ctx;
 439	bool is_primary;
 440	int inc = 1, ret;
 441
 442	DRM_MODESET_LOCK_ALL_BEGIN(fb->dev, ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret);
 443
 444	qobj = gem_to_qxl_bo(fb->obj[0]);
 445	/* if we aren't primary surface ignore this */
 446	is_primary = qobj->shadow ? qobj->shadow->is_primary : qobj->is_primary;
 447	if (!is_primary)
 448		goto out_lock_end;
 449
 450	if (!num_clips) {
 451		num_clips = 1;
 452		clips = &norect;
 453		norect.x1 = norect.y1 = 0;
 454		norect.x2 = fb->width;
 455		norect.y2 = fb->height;
 456	} else if (flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY) {
 457		num_clips /= 2;
 458		inc = 2; /* skip source rects */
 459	}
 460
 461	qxl_draw_dirty_fb(qdev, fb, qobj, flags, color,
 462			  clips, num_clips, inc, 0);
 463
 464out_lock_end:
 465	DRM_MODESET_LOCK_ALL_END(fb->dev, ctx, ret);
 466
 467	return 0;
 468}
 469
 470static const struct drm_framebuffer_funcs qxl_fb_funcs = {
 471	.destroy = drm_gem_fb_destroy,
 472	.dirty = qxl_framebuffer_surface_dirty,
 473	.create_handle = drm_gem_fb_create_handle,
 474};
 475
 476static void qxl_crtc_atomic_enable(struct drm_crtc *crtc,
 477				   struct drm_atomic_state *state)
 478{
 479	qxl_crtc_update_monitors_config(crtc, "enable");
 480
 481	drm_crtc_vblank_on(crtc);
 482}
 483
 484static void qxl_crtc_atomic_disable(struct drm_crtc *crtc,
 485				    struct drm_atomic_state *state)
 486{
 487	drm_crtc_vblank_off(crtc);
 488
 489	qxl_crtc_update_monitors_config(crtc, "disable");
 490}
 491
 492static const struct drm_crtc_helper_funcs qxl_crtc_helper_funcs = {
 493	.atomic_flush = qxl_crtc_atomic_flush,
 494	.atomic_enable = qxl_crtc_atomic_enable,
 495	.atomic_disable = qxl_crtc_atomic_disable,
 496};
 497
 498static int qxl_primary_atomic_check(struct drm_plane *plane,
 499				    struct drm_atomic_state *state)
 500{
 501	struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
 502										 plane);
 503	struct qxl_device *qdev = to_qxl(plane->dev);
 504	struct qxl_bo *bo;
 505
 506	if (!new_plane_state->crtc || !new_plane_state->fb)
 507		return 0;
 508
 509	bo = gem_to_qxl_bo(new_plane_state->fb->obj[0]);
 510
 511	return qxl_check_framebuffer(qdev, bo);
 512}
 513
 514static int qxl_primary_apply_cursor(struct qxl_device *qdev,
 515				    struct drm_plane_state *plane_state)
 516{
 517	struct qxl_crtc *qcrtc = to_qxl_crtc(plane_state->crtc);
 518	struct qxl_cursor_cmd *cmd;
 519	struct qxl_release *release;
 520	int ret = 0;
 521
 522	if (!qcrtc->cursor_bo)
 523		return 0;
 524
 525	ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
 526					 QXL_RELEASE_CURSOR_CMD,
 527					 &release, NULL);
 528	if (ret)
 529		return ret;
 530
 531	ret = qxl_release_list_add(release, qcrtc->cursor_bo);
 532	if (ret)
 533		goto out_free_release;
 534
 535	ret = qxl_release_reserve_list(release, false);
 536	if (ret)
 537		goto out_free_release;
 538
 539	cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
 540	cmd->type = QXL_CURSOR_SET;
 541	cmd->u.set.position.x = plane_state->crtc_x + plane_state->hotspot_x;
 542	cmd->u.set.position.y = plane_state->crtc_y + plane_state->hotspot_y;
 543
 544	cmd->u.set.shape = qxl_bo_physical_address(qdev, qcrtc->cursor_bo, 0);
 545
 546	cmd->u.set.visible = 1;
 547	qxl_release_unmap(qdev, release, &cmd->release_info);
 548
 549	qxl_release_fence_buffer_objects(release);
 550	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
 551
 552	return ret;
 553
 554out_free_release:
 555	qxl_release_free(qdev, release);
 556	return ret;
 557}
 558
 559static int qxl_primary_move_cursor(struct qxl_device *qdev,
 560				   struct drm_plane_state *plane_state)
 561{
 562	struct qxl_crtc *qcrtc = to_qxl_crtc(plane_state->crtc);
 563	struct qxl_cursor_cmd *cmd;
 564	struct qxl_release *release;
 565	int ret = 0;
 566
 567	if (!qcrtc->cursor_bo)
 568		return 0;
 569
 570	ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
 571					 QXL_RELEASE_CURSOR_CMD,
 572					 &release, NULL);
 573	if (ret)
 574		return ret;
 575
 576	ret = qxl_release_reserve_list(release, true);
 577	if (ret) {
 578		qxl_release_free(qdev, release);
 579		return ret;
 580	}
 581
 582	cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
 583	cmd->type = QXL_CURSOR_MOVE;
 584	cmd->u.position.x = plane_state->crtc_x + plane_state->hotspot_x;
 585	cmd->u.position.y = plane_state->crtc_y + plane_state->hotspot_y;
 586	qxl_release_unmap(qdev, release, &cmd->release_info);
 587
 588	qxl_release_fence_buffer_objects(release);
 589	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
 590	return ret;
 591}
 592
 593static struct qxl_bo *qxl_create_cursor(struct qxl_device *qdev,
 594					struct qxl_bo *user_bo,
 595					int hot_x, int hot_y)
 596{
 597	static const u32 size = 64 * 64 * 4;
 598	struct qxl_bo *cursor_bo;
 599	struct iosys_map cursor_map;
 600	struct iosys_map user_map;
 601	struct qxl_cursor cursor;
 602	int ret;
 603
 604	if (!user_bo)
 605		return NULL;
 606
 607	ret = qxl_bo_create(qdev, sizeof(struct qxl_cursor) + size,
 608			    false, true, QXL_GEM_DOMAIN_VRAM, 1,
 609			    NULL, &cursor_bo);
 610	if (ret)
 611		goto err;
 612
 613	ret = qxl_bo_pin_and_vmap(cursor_bo, &cursor_map);
 614	if (ret)
 615		goto err_unref;
 616
 617	ret = qxl_bo_pin_and_vmap(user_bo, &user_map);
 618	if (ret)
 619		goto err_unmap;
 620
 621	cursor.header.unique = 0;
 622	cursor.header.type = SPICE_CURSOR_TYPE_ALPHA;
 623	cursor.header.width = 64;
 624	cursor.header.height = 64;
 625	cursor.header.hot_spot_x = hot_x;
 626	cursor.header.hot_spot_y = hot_y;
 627	cursor.data_size = size;
 628	cursor.chunk.next_chunk = 0;
 629	cursor.chunk.prev_chunk = 0;
 630	cursor.chunk.data_size = size;
 631	if (cursor_map.is_iomem) {
 632		memcpy_toio(cursor_map.vaddr_iomem,
 633			    &cursor, sizeof(cursor));
 634		memcpy_toio(cursor_map.vaddr_iomem + sizeof(cursor),
 635			    user_map.vaddr, size);
 636	} else {
 637		memcpy(cursor_map.vaddr,
 638		       &cursor, sizeof(cursor));
 639		memcpy(cursor_map.vaddr + sizeof(cursor),
 640		       user_map.vaddr, size);
 641	}
 642
 643	qxl_bo_vunmap_and_unpin(user_bo);
 644	qxl_bo_vunmap_and_unpin(cursor_bo);
 645	return cursor_bo;
 646
 647err_unmap:
 648	qxl_bo_vunmap_and_unpin(cursor_bo);
 649err_unref:
 650	qxl_bo_unpin(cursor_bo);
 651	qxl_bo_unref(&cursor_bo);
 652err:
 653	return NULL;
 654}
 655
 656static void qxl_free_cursor(struct qxl_bo *cursor_bo)
 657{
 658	if (!cursor_bo)
 659		return;
 660
 661	qxl_bo_unpin(cursor_bo);
 662	qxl_bo_unref(&cursor_bo);
 663}
 664
 665static void qxl_primary_atomic_update(struct drm_plane *plane,
 666				      struct drm_atomic_state *state)
 667{
 668	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
 669									   plane);
 670	struct qxl_device *qdev = to_qxl(plane->dev);
 671	struct qxl_bo *bo = gem_to_qxl_bo(new_state->fb->obj[0]);
 672	struct qxl_bo *primary;
 673	struct drm_clip_rect norect = {
 674	    .x1 = 0,
 675	    .y1 = 0,
 676	    .x2 = new_state->fb->width,
 677	    .y2 = new_state->fb->height
 678	};
 679	uint32_t dumb_shadow_offset = 0;
 680
 681	primary = bo->shadow ? bo->shadow : bo;
 682
 683	if (!primary->is_primary) {
 684		if (qdev->primary_bo)
 685			qxl_io_destroy_primary(qdev);
 686		qxl_io_create_primary(qdev, primary);
 687		qxl_primary_apply_cursor(qdev, plane->state);
 688	}
 689
 690	if (bo->is_dumb)
 691		dumb_shadow_offset =
 692			qdev->dumb_heads[new_state->crtc->index].x;
 693
 694	qxl_draw_dirty_fb(qdev, new_state->fb, bo, 0, 0, &norect, 1, 1,
 695			  dumb_shadow_offset);
 696}
 697
 698static void qxl_primary_atomic_disable(struct drm_plane *plane,
 699				       struct drm_atomic_state *state)
 700{
 701	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
 702									   plane);
 703	struct qxl_device *qdev = to_qxl(plane->dev);
 704
 705	if (old_state->fb) {
 706		struct qxl_bo *bo = gem_to_qxl_bo(old_state->fb->obj[0]);
 707
 708		if (bo->shadow)
 709			bo = bo->shadow;
 710		if (bo->is_primary)
 711			qxl_io_destroy_primary(qdev);
 712	}
 713}
 714
 715static void qxl_cursor_atomic_update(struct drm_plane *plane,
 716				     struct drm_atomic_state *state)
 717{
 718	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
 719									   plane);
 720	struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
 721									   plane);
 722	struct qxl_device *qdev = to_qxl(plane->dev);
 723	struct drm_framebuffer *fb = new_state->fb;
 724
 725	if (fb != old_state->fb) {
 726		qxl_primary_apply_cursor(qdev, new_state);
 727	} else {
 728		qxl_primary_move_cursor(qdev, new_state);
 729	}
 730}
 731
 732static void qxl_cursor_atomic_disable(struct drm_plane *plane,
 733				      struct drm_atomic_state *state)
 734{
 735	struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
 736									   plane);
 737	struct qxl_device *qdev = to_qxl(plane->dev);
 738	struct qxl_crtc *qcrtc;
 739	struct qxl_release *release;
 740	struct qxl_cursor_cmd *cmd;
 741	int ret;
 742
 743	ret = qxl_alloc_release_reserved(qdev, sizeof(*cmd),
 744					 QXL_RELEASE_CURSOR_CMD,
 745					 &release, NULL);
 746	if (ret)
 747		return;
 748
 749	ret = qxl_release_reserve_list(release, true);
 750	if (ret) {
 751		qxl_release_free(qdev, release);
 752		return;
 753	}
 754
 755	cmd = (struct qxl_cursor_cmd *)qxl_release_map(qdev, release);
 756	cmd->type = QXL_CURSOR_HIDE;
 757	qxl_release_unmap(qdev, release, &cmd->release_info);
 758
 759	qxl_release_fence_buffer_objects(release);
 760	qxl_push_cursor_ring_release(qdev, release, QXL_CMD_CURSOR, false);
 761
 762	qcrtc = to_qxl_crtc(old_state->crtc);
 763	qxl_free_cursor(qcrtc->cursor_bo);
 764	qcrtc->cursor_bo = NULL;
 765}
 766
 767static void qxl_update_dumb_head(struct qxl_device *qdev,
 768				 int index, struct qxl_bo *bo)
 769{
 770	uint32_t width, height;
 771
 772	if (index >= qdev->monitors_config->max_allowed)
 773		return;
 774
 775	if (bo && bo->is_dumb) {
 776		width = bo->surf.width;
 777		height = bo->surf.height;
 778	} else {
 779		width = 0;
 780		height = 0;
 781	}
 782
 783	if (qdev->dumb_heads[index].width == width &&
 784	    qdev->dumb_heads[index].height == height)
 785		return;
 786
 787	DRM_DEBUG("#%d: %dx%d -> %dx%d\n", index,
 788		  qdev->dumb_heads[index].width,
 789		  qdev->dumb_heads[index].height,
 790		  width, height);
 791	qdev->dumb_heads[index].width = width;
 792	qdev->dumb_heads[index].height = height;
 793}
 794
 795static void qxl_calc_dumb_shadow(struct qxl_device *qdev,
 796				 struct qxl_surface *surf)
 797{
 798	struct qxl_head *head;
 799	int i;
 800
 801	memset(surf, 0, sizeof(*surf));
 802	for (i = 0; i < qdev->monitors_config->max_allowed; i++) {
 803		head = qdev->dumb_heads + i;
 804		head->x = surf->width;
 805		surf->width += head->width;
 806		if (surf->height < head->height)
 807			surf->height = head->height;
 808	}
 809	if (surf->width < 64)
 810		surf->width = 64;
 811	if (surf->height < 64)
 812		surf->height = 64;
 813	surf->format = SPICE_SURFACE_FMT_32_xRGB;
 814	surf->stride = surf->width * 4;
 815
 816	if (!qdev->dumb_shadow_bo ||
 817	    qdev->dumb_shadow_bo->surf.width != surf->width ||
 818	    qdev->dumb_shadow_bo->surf.height != surf->height)
 819		DRM_DEBUG("%dx%d\n", surf->width, surf->height);
 820}
 821
 822static void qxl_prepare_shadow(struct qxl_device *qdev, struct qxl_bo *user_bo,
 823			       int crtc_index)
 824{
 825	struct qxl_surface surf;
 826
 827	qxl_update_dumb_head(qdev, crtc_index,
 828			     user_bo);
 829	qxl_calc_dumb_shadow(qdev, &surf);
 830	if (!qdev->dumb_shadow_bo ||
 831	    qdev->dumb_shadow_bo->surf.width  != surf.width ||
 832	    qdev->dumb_shadow_bo->surf.height != surf.height) {
 833		if (qdev->dumb_shadow_bo) {
 834			qxl_bo_unpin(qdev->dumb_shadow_bo);
 835			drm_gem_object_put
 836				(&qdev->dumb_shadow_bo->tbo.base);
 837			qdev->dumb_shadow_bo = NULL;
 838		}
 839		qxl_bo_create(qdev, surf.height * surf.stride,
 840			      true, true, QXL_GEM_DOMAIN_SURFACE, 0,
 841			      &surf, &qdev->dumb_shadow_bo);
 842	}
 843	if (user_bo->shadow != qdev->dumb_shadow_bo) {
 844		if (user_bo->shadow) {
 845			qxl_bo_unpin(user_bo->shadow);
 846			drm_gem_object_put
 847				(&user_bo->shadow->tbo.base);
 848			user_bo->shadow = NULL;
 849		}
 850		drm_gem_object_get(&qdev->dumb_shadow_bo->tbo.base);
 851		user_bo->shadow = qdev->dumb_shadow_bo;
 852		qxl_bo_pin(user_bo->shadow);
 853	}
 854}
 855
 856static int qxl_plane_prepare_fb(struct drm_plane *plane,
 857				struct drm_plane_state *new_state)
 858{
 859	struct qxl_device *qdev = to_qxl(plane->dev);
 860	struct drm_gem_object *obj;
 861	struct qxl_bo *user_bo;
 862	int ret;
 863
 864	if (!new_state->fb)
 865		return 0;
 866
 867	obj = new_state->fb->obj[0];
 868	user_bo = gem_to_qxl_bo(obj);
 869
 870	if (plane->type == DRM_PLANE_TYPE_PRIMARY &&
 871	    user_bo->is_dumb) {
 872		qxl_prepare_shadow(qdev, user_bo, new_state->crtc->index);
 873	}
 874
 875	if (plane->type == DRM_PLANE_TYPE_CURSOR &&
 876	    plane->state->fb != new_state->fb) {
 877		struct qxl_crtc *qcrtc = to_qxl_crtc(new_state->crtc);
 878		struct qxl_bo *old_cursor_bo = qcrtc->cursor_bo;
 879
 880		qcrtc->cursor_bo = qxl_create_cursor(qdev, user_bo,
 881						     new_state->hotspot_x,
 882						     new_state->hotspot_y);
 883		qxl_free_cursor(old_cursor_bo);
 884	}
 885
 886	ret = qxl_bo_pin(user_bo);
 887	if (ret)
 888		return ret;
 889
 890	return drm_gem_plane_helper_prepare_fb(plane, new_state);
 891}
 892
 893static void qxl_plane_cleanup_fb(struct drm_plane *plane,
 894				 struct drm_plane_state *old_state)
 895{
 896	struct drm_gem_object *obj;
 897	struct qxl_bo *user_bo;
 898
 899	if (!old_state->fb) {
 900		/*
 901		 * we never executed prepare_fb, so there's nothing to
 902		 * unpin.
 903		 */
 904		return;
 905	}
 906
 907	obj = old_state->fb->obj[0];
 908	user_bo = gem_to_qxl_bo(obj);
 909	qxl_bo_unpin(user_bo);
 910
 911	if (old_state->fb != plane->state->fb && user_bo->shadow) {
 912		qxl_bo_unpin(user_bo->shadow);
 913		drm_gem_object_put(&user_bo->shadow->tbo.base);
 914		user_bo->shadow = NULL;
 915	}
 916}
 917
 918static const uint32_t qxl_cursor_plane_formats[] = {
 919	DRM_FORMAT_ARGB8888,
 920};
 921
 922static const struct drm_plane_helper_funcs qxl_cursor_helper_funcs = {
 923	.atomic_update = qxl_cursor_atomic_update,
 924	.atomic_disable = qxl_cursor_atomic_disable,
 925	.prepare_fb = qxl_plane_prepare_fb,
 926	.cleanup_fb = qxl_plane_cleanup_fb,
 927};
 928
 929static const struct drm_plane_funcs qxl_cursor_plane_funcs = {
 930	.update_plane	= drm_atomic_helper_update_plane,
 931	.disable_plane	= drm_atomic_helper_disable_plane,
 932	.destroy	= drm_plane_helper_destroy,
 933	.reset		= drm_atomic_helper_plane_reset,
 934	.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
 935	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
 936};
 937
 938static const uint32_t qxl_primary_plane_formats[] = {
 939	DRM_FORMAT_XRGB8888,
 940	DRM_FORMAT_ARGB8888,
 941};
 942
 943static const struct drm_plane_helper_funcs primary_helper_funcs = {
 944	.atomic_check = qxl_primary_atomic_check,
 945	.atomic_update = qxl_primary_atomic_update,
 946	.atomic_disable = qxl_primary_atomic_disable,
 947	.prepare_fb = qxl_plane_prepare_fb,
 948	.cleanup_fb = qxl_plane_cleanup_fb,
 949};
 950
 951static const struct drm_plane_funcs qxl_primary_plane_funcs = {
 952	.update_plane	= drm_atomic_helper_update_plane,
 953	.disable_plane	= drm_atomic_helper_disable_plane,
 954	.destroy	= drm_plane_helper_destroy,
 955	.reset		= drm_atomic_helper_plane_reset,
 956	.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
 957	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
 958};
 959
 960static struct drm_plane *qxl_create_plane(struct qxl_device *qdev,
 961					  unsigned int possible_crtcs,
 962					  enum drm_plane_type type)
 963{
 964	const struct drm_plane_helper_funcs *helper_funcs = NULL;
 965	struct drm_plane *plane;
 966	const struct drm_plane_funcs *funcs;
 967	const uint32_t *formats;
 968	int num_formats;
 969	int err;
 970
 971	if (type == DRM_PLANE_TYPE_PRIMARY) {
 972		funcs = &qxl_primary_plane_funcs;
 973		formats = qxl_primary_plane_formats;
 974		num_formats = ARRAY_SIZE(qxl_primary_plane_formats);
 975		helper_funcs = &primary_helper_funcs;
 976	} else if (type == DRM_PLANE_TYPE_CURSOR) {
 977		funcs = &qxl_cursor_plane_funcs;
 978		formats = qxl_cursor_plane_formats;
 979		helper_funcs = &qxl_cursor_helper_funcs;
 980		num_formats = ARRAY_SIZE(qxl_cursor_plane_formats);
 981	} else {
 982		return ERR_PTR(-EINVAL);
 983	}
 984
 985	plane = kzalloc(sizeof(*plane), GFP_KERNEL);
 986	if (!plane)
 987		return ERR_PTR(-ENOMEM);
 988
 989	err = drm_universal_plane_init(&qdev->ddev, plane, possible_crtcs,
 990				       funcs, formats, num_formats,
 991				       NULL, type, NULL);
 992	if (err)
 993		goto free_plane;
 994
 995	drm_plane_helper_add(plane, helper_funcs);
 996
 997	return plane;
 998
 999free_plane:
1000	kfree(plane);
1001	return ERR_PTR(-EINVAL);
1002}
1003
1004static int qdev_crtc_init(struct drm_device *dev, int crtc_id)
1005{
1006	struct qxl_crtc *qxl_crtc;
1007	struct drm_plane *primary, *cursor;
1008	struct qxl_device *qdev = to_qxl(dev);
1009	int r;
1010
1011	qxl_crtc = kzalloc(sizeof(struct qxl_crtc), GFP_KERNEL);
1012	if (!qxl_crtc)
1013		return -ENOMEM;
1014
1015	primary = qxl_create_plane(qdev, 1 << crtc_id, DRM_PLANE_TYPE_PRIMARY);
1016	if (IS_ERR(primary)) {
1017		r = -ENOMEM;
1018		goto free_mem;
1019	}
1020
1021	cursor = qxl_create_plane(qdev, 1 << crtc_id, DRM_PLANE_TYPE_CURSOR);
1022	if (IS_ERR(cursor)) {
1023		r = -ENOMEM;
1024		goto clean_primary;
1025	}
1026
1027	r = drm_crtc_init_with_planes(dev, &qxl_crtc->base, primary, cursor,
1028				      &qxl_crtc_funcs, NULL);
1029	if (r)
1030		goto clean_cursor;
1031
1032	qxl_crtc->index = crtc_id;
1033	drm_crtc_helper_add(&qxl_crtc->base, &qxl_crtc_helper_funcs);
1034	return 0;
1035
1036clean_cursor:
1037	drm_plane_cleanup(cursor);
1038	kfree(cursor);
1039clean_primary:
1040	drm_plane_cleanup(primary);
1041	kfree(primary);
1042free_mem:
1043	kfree(qxl_crtc);
1044	return r;
1045}
1046
1047static int qxl_conn_get_modes(struct drm_connector *connector)
1048{
1049	struct drm_device *dev = connector->dev;
1050	struct qxl_device *qdev = to_qxl(dev);
1051	struct qxl_output *output = drm_connector_to_qxl_output(connector);
1052	unsigned int pwidth = 1024;
1053	unsigned int pheight = 768;
1054	int ret = 0;
1055
1056	if (qdev->client_monitors_config) {
1057		struct qxl_head *head;
1058		head = &qdev->client_monitors_config->heads[output->index];
1059		if (head->width)
1060			pwidth = head->width;
1061		if (head->height)
1062			pheight = head->height;
1063	}
1064
1065	ret += drm_add_modes_noedid(connector, 8192, 8192);
1066	ret += qxl_add_extra_modes(connector);
1067	ret += qxl_add_monitors_config_modes(connector);
1068	drm_set_preferred_mode(connector, pwidth, pheight);
1069	return ret;
1070}
1071
1072static enum drm_mode_status qxl_conn_mode_valid(struct drm_connector *connector,
1073			       const struct drm_display_mode *mode)
1074{
1075	struct drm_device *ddev = connector->dev;
1076	struct qxl_device *qdev = to_qxl(ddev);
1077
1078	if (qxl_check_mode(qdev, mode->hdisplay, mode->vdisplay) != 0)
1079		return MODE_BAD;
1080
1081	return MODE_OK;
1082}
1083
1084static struct drm_encoder *qxl_best_encoder(struct drm_connector *connector)
1085{
1086	struct qxl_output *qxl_output =
1087		drm_connector_to_qxl_output(connector);
1088
1089	DRM_DEBUG("\n");
1090	return &qxl_output->enc;
1091}
1092
1093static const struct drm_connector_helper_funcs qxl_connector_helper_funcs = {
1094	.get_modes = qxl_conn_get_modes,
1095	.mode_valid = qxl_conn_mode_valid,
1096	.best_encoder = qxl_best_encoder,
1097};
1098
1099static enum drm_connector_status qxl_conn_detect(
1100			struct drm_connector *connector,
1101			bool force)
1102{
1103	struct qxl_output *output =
1104		drm_connector_to_qxl_output(connector);
1105	struct drm_device *ddev = connector->dev;
1106	struct qxl_device *qdev = to_qxl(ddev);
1107	bool connected = false;
1108
1109	/* The first monitor is always connected */
1110	if (!qdev->client_monitors_config) {
1111		if (output->index == 0)
1112			connected = true;
1113	} else
1114		connected = qdev->client_monitors_config->count > output->index &&
1115		     qxl_head_enabled(&qdev->client_monitors_config->heads[output->index]);
1116
1117	DRM_DEBUG("#%d connected: %d\n", output->index, connected);
1118
1119	return connected ? connector_status_connected
1120			 : connector_status_disconnected;
1121}
1122
1123static void qxl_conn_destroy(struct drm_connector *connector)
1124{
1125	struct qxl_output *qxl_output =
1126		drm_connector_to_qxl_output(connector);
1127
1128	drm_connector_unregister(connector);
1129	drm_connector_cleanup(connector);
1130	kfree(qxl_output);
1131}
1132
1133static const struct drm_connector_funcs qxl_connector_funcs = {
1134	.detect = qxl_conn_detect,
1135	.fill_modes = drm_helper_probe_single_connector_modes,
1136	.destroy = qxl_conn_destroy,
1137	.reset = drm_atomic_helper_connector_reset,
1138	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1139	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1140};
1141
1142static int qxl_mode_create_hotplug_mode_update_property(struct qxl_device *qdev)
1143{
1144	if (qdev->hotplug_mode_update_property)
1145		return 0;
1146
1147	qdev->hotplug_mode_update_property =
1148		drm_property_create_range(&qdev->ddev, DRM_MODE_PROP_IMMUTABLE,
1149					  "hotplug_mode_update", 0, 1);
1150
1151	return 0;
1152}
1153
1154static int qdev_output_init(struct drm_device *dev, int num_output)
1155{
1156	struct qxl_device *qdev = to_qxl(dev);
1157	struct qxl_output *qxl_output;
1158	struct drm_connector *connector;
1159	struct drm_encoder *encoder;
1160	int ret;
1161
1162	qxl_output = kzalloc(sizeof(struct qxl_output), GFP_KERNEL);
1163	if (!qxl_output)
1164		return -ENOMEM;
1165
1166	qxl_output->index = num_output;
1167
1168	connector = &qxl_output->base;
1169	encoder = &qxl_output->enc;
1170	drm_connector_init(dev, &qxl_output->base,
1171			   &qxl_connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL);
1172
1173	ret = drm_simple_encoder_init(dev, &qxl_output->enc,
1174				      DRM_MODE_ENCODER_VIRTUAL);
1175	if (ret) {
1176		drm_err(dev, "drm_simple_encoder_init() failed, error %d\n",
1177			ret);
1178		goto err_drm_connector_cleanup;
1179	}
1180
1181	/* we get HPD via client monitors config */
1182	connector->polled = DRM_CONNECTOR_POLL_HPD;
1183	encoder->possible_crtcs = 1 << num_output;
1184	drm_connector_attach_encoder(&qxl_output->base,
1185					  &qxl_output->enc);
1186	drm_connector_helper_add(connector, &qxl_connector_helper_funcs);
1187
1188	drm_object_attach_property(&connector->base,
1189				   qdev->hotplug_mode_update_property, 0);
1190	drm_object_attach_property(&connector->base,
1191				   dev->mode_config.suggested_x_property, 0);
1192	drm_object_attach_property(&connector->base,
1193				   dev->mode_config.suggested_y_property, 0);
1194	return 0;
1195
1196err_drm_connector_cleanup:
1197	drm_connector_cleanup(&qxl_output->base);
1198	kfree(qxl_output);
1199	return ret;
1200}
1201
1202static struct drm_framebuffer *
1203qxl_user_framebuffer_create(struct drm_device *dev,
1204			    struct drm_file *file_priv,
1205			    const struct drm_format_info *info,
1206			    const struct drm_mode_fb_cmd2 *mode_cmd)
1207{
1208	return drm_gem_fb_create_with_funcs(dev, file_priv, info, mode_cmd,
1209					    &qxl_fb_funcs);
1210}
1211
1212static const struct drm_mode_config_funcs qxl_mode_funcs = {
1213	.fb_create = qxl_user_framebuffer_create,
1214	.atomic_check = drm_atomic_helper_check,
1215	.atomic_commit = drm_atomic_helper_commit,
1216};
1217
1218int qxl_create_monitors_object(struct qxl_device *qdev)
1219{
1220	int ret;
1221	struct drm_gem_object *gobj;
1222	struct iosys_map map;
1223	int monitors_config_size = sizeof(struct qxl_monitors_config) +
1224		qxl_num_crtc * sizeof(struct qxl_head);
1225
1226	ret = qxl_gem_object_create(qdev, monitors_config_size, 0,
1227				    QXL_GEM_DOMAIN_VRAM,
1228				    false, false, NULL, &gobj);
1229	if (ret) {
1230		DRM_ERROR("%s: failed to create gem ret=%d\n", __func__, ret);
1231		return -ENOMEM;
1232	}
1233	qdev->monitors_config_bo = gem_to_qxl_bo(gobj);
1234
1235	ret = qxl_bo_pin_and_vmap(qdev->monitors_config_bo, &map);
1236	if (ret)
1237		return ret;
1238
1239	qdev->monitors_config = qdev->monitors_config_bo->kptr;
1240	qdev->ram_header->monitors_config =
1241		qxl_bo_physical_address(qdev, qdev->monitors_config_bo, 0);
1242
1243	memset(qdev->monitors_config, 0, monitors_config_size);
1244	qdev->dumb_heads = kcalloc(qxl_num_crtc, sizeof(qdev->dumb_heads[0]),
1245				   GFP_KERNEL);
1246	if (!qdev->dumb_heads) {
1247		qxl_destroy_monitors_object(qdev);
1248		return -ENOMEM;
1249	}
1250	return 0;
1251}
1252
1253int qxl_destroy_monitors_object(struct qxl_device *qdev)
1254{
1255	int ret;
1256
1257	if (!qdev->monitors_config_bo)
1258		return 0;
1259
1260	kfree(qdev->dumb_heads);
1261	qdev->dumb_heads = NULL;
1262
1263	qdev->monitors_config = NULL;
1264	qdev->ram_header->monitors_config = 0;
1265
1266	ret = qxl_bo_vunmap_and_unpin(qdev->monitors_config_bo);
1267	if (ret)
1268		return ret;
1269
1270	qxl_bo_unref(&qdev->monitors_config_bo);
1271	return 0;
1272}
1273
1274int qxl_modeset_init(struct qxl_device *qdev)
1275{
1276	int i;
1277	int ret;
1278
1279	ret = drmm_mode_config_init(&qdev->ddev);
1280	if (ret)
1281		return ret;
1282
1283	ret = qxl_create_monitors_object(qdev);
1284	if (ret)
1285		return ret;
1286
1287	qdev->ddev.mode_config.funcs = (void *)&qxl_mode_funcs;
1288
1289	/* modes will be validated against the framebuffer size */
1290	qdev->ddev.mode_config.min_width = 0;
1291	qdev->ddev.mode_config.min_height = 0;
1292	qdev->ddev.mode_config.max_width = 8192;
1293	qdev->ddev.mode_config.max_height = 8192;
1294
1295	drm_mode_create_suggested_offset_properties(&qdev->ddev);
1296	qxl_mode_create_hotplug_mode_update_property(qdev);
1297
1298	for (i = 0 ; i < qxl_num_crtc; ++i) {
1299		qdev_crtc_init(&qdev->ddev, i);
1300		qdev_output_init(&qdev->ddev, i);
1301	}
1302
1303	qxl_display_read_client_monitors_config(qdev);
1304
1305	ret = drm_vblank_init(&qdev->ddev, qxl_num_crtc);
1306	if (ret)
1307		return ret;
1308
1309	drm_mode_config_reset(&qdev->ddev);
1310	return 0;
1311}
1312
1313void qxl_modeset_fini(struct qxl_device *qdev)
1314{
1315	if (qdev->dumb_shadow_bo) {
1316		qxl_bo_unpin(qdev->dumb_shadow_bo);
1317		drm_gem_object_put(&qdev->dumb_shadow_bo->tbo.base);
1318		qdev->dumb_shadow_bo = NULL;
1319	}
1320	qxl_destroy_monitors_object(qdev);
1321}
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