1 /**************************************************************************
3 * Copyright © 2011 VMware, Inc., Palo Alto, CA., USA
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 #include "vmwgfx_kms.h"
29 #include <drm/drm_plane_helper.h>
32 #define vmw_crtc_to_sou(x) \
33 container_of(x, struct vmw_screen_object_unit, base.crtc)
34 #define vmw_encoder_to_sou(x) \
35 container_of(x, struct vmw_screen_object_unit, base.encoder)
36 #define vmw_connector_to_sou(x) \
37 container_of(x, struct vmw_screen_object_unit, base.connector)
39 struct vmw_screen_object_display {
40 unsigned num_implicit;
42 struct vmw_framebuffer *implicit_fb;
46 * Display unit using screen objects.
48 struct vmw_screen_object_unit {
49 struct vmw_display_unit base;
51 unsigned long buffer_size; /**< Size of allocated buffer */
52 struct vmw_dma_buffer *buffer; /**< Backing store buffer */
58 static void vmw_sou_destroy(struct vmw_screen_object_unit *sou)
60 vmw_display_unit_cleanup(&sou->base);
66 * Screen Object Display Unit CRTC functions
69 static void vmw_sou_crtc_destroy(struct drm_crtc *crtc)
71 vmw_sou_destroy(vmw_crtc_to_sou(crtc));
74 static void vmw_sou_del_active(struct vmw_private *vmw_priv,
75 struct vmw_screen_object_unit *sou)
77 struct vmw_screen_object_display *ld = vmw_priv->sou_priv;
79 if (sou->active_implicit) {
80 if (--(ld->num_implicit) == 0)
81 ld->implicit_fb = NULL;
82 sou->active_implicit = false;
86 static void vmw_sou_add_active(struct vmw_private *vmw_priv,
87 struct vmw_screen_object_unit *sou,
88 struct vmw_framebuffer *vfb)
90 struct vmw_screen_object_display *ld = vmw_priv->sou_priv;
92 BUG_ON(!ld->num_implicit && ld->implicit_fb);
94 if (!sou->active_implicit && sou->base.is_implicit) {
95 ld->implicit_fb = vfb;
96 sou->active_implicit = true;
102 * Send the fifo command to create a screen.
104 static int vmw_sou_fifo_create(struct vmw_private *dev_priv,
105 struct vmw_screen_object_unit *sou,
106 uint32_t x, uint32_t y,
107 struct drm_display_mode *mode)
115 SVGAScreenObject obj;
118 BUG_ON(!sou->buffer);
120 fifo_size = sizeof(*cmd);
121 cmd = vmw_fifo_reserve(dev_priv, fifo_size);
122 /* The hardware has hung, nothing we can do about it here. */
123 if (unlikely(cmd == NULL)) {
124 DRM_ERROR("Fifo reserve failed.\n");
128 memset(cmd, 0, fifo_size);
129 cmd->header.cmdType = SVGA_CMD_DEFINE_SCREEN;
130 cmd->obj.structSize = sizeof(SVGAScreenObject);
131 cmd->obj.id = sou->base.unit;
132 cmd->obj.flags = SVGA_SCREEN_HAS_ROOT |
133 (sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0);
134 cmd->obj.size.width = mode->hdisplay;
135 cmd->obj.size.height = mode->vdisplay;
136 if (sou->base.is_implicit) {
140 cmd->obj.root.x = sou->base.gui_x;
141 cmd->obj.root.y = sou->base.gui_y;
144 /* Ok to assume that buffer is pinned in vram */
145 vmw_bo_get_guest_ptr(&sou->buffer->base, &cmd->obj.backingStore.ptr);
146 cmd->obj.backingStore.pitch = mode->hdisplay * 4;
148 vmw_fifo_commit(dev_priv, fifo_size);
156 * Send the fifo command to destroy a screen.
158 static int vmw_sou_fifo_destroy(struct vmw_private *dev_priv,
159 struct vmw_screen_object_unit *sou)
168 SVGAFifoCmdDestroyScreen body;
171 /* no need to do anything */
172 if (unlikely(!sou->defined))
175 fifo_size = sizeof(*cmd);
176 cmd = vmw_fifo_reserve(dev_priv, fifo_size);
177 /* the hardware has hung, nothing we can do about it here */
178 if (unlikely(cmd == NULL)) {
179 DRM_ERROR("Fifo reserve failed.\n");
183 memset(cmd, 0, fifo_size);
184 cmd->header.cmdType = SVGA_CMD_DESTROY_SCREEN;
185 cmd->body.screenId = sou->base.unit;
187 vmw_fifo_commit(dev_priv, fifo_size);
190 ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ);
191 if (unlikely(ret != 0))
192 DRM_ERROR("Failed to sync with HW");
194 sou->defined = false;
200 * Free the backing store.
202 static void vmw_sou_backing_free(struct vmw_private *dev_priv,
203 struct vmw_screen_object_unit *sou)
205 struct ttm_buffer_object *bo;
207 if (unlikely(sou->buffer == NULL))
210 bo = &sou->buffer->base;
213 sou->buffer_size = 0;
217 * Allocate the backing store for the buffer.
219 static int vmw_sou_backing_alloc(struct vmw_private *dev_priv,
220 struct vmw_screen_object_unit *sou,
225 if (sou->buffer_size == size)
229 vmw_sou_backing_free(dev_priv, sou);
231 sou->buffer = kzalloc(sizeof(*sou->buffer), GFP_KERNEL);
232 if (unlikely(sou->buffer == NULL))
235 /* After we have alloced the backing store might not be able to
236 * resume the overlays, this is preferred to failing to alloc.
238 vmw_overlay_pause_all(dev_priv);
239 ret = vmw_dmabuf_init(dev_priv, sou->buffer, size,
240 &vmw_vram_ne_placement,
241 false, &vmw_dmabuf_bo_free);
242 vmw_overlay_resume_all(dev_priv);
244 if (unlikely(ret != 0))
245 sou->buffer = NULL; /* vmw_dmabuf_init frees on error */
247 sou->buffer_size = size;
252 static int vmw_sou_crtc_set_config(struct drm_mode_set *set)
254 struct vmw_private *dev_priv;
255 struct vmw_screen_object_unit *sou;
256 struct drm_connector *connector;
257 struct drm_display_mode *mode;
258 struct drm_encoder *encoder;
259 struct vmw_framebuffer *vfb;
260 struct drm_framebuffer *fb;
261 struct drm_crtc *crtc;
272 sou = vmw_crtc_to_sou(crtc);
273 vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL;
274 dev_priv = vmw_priv(crtc->dev);
276 if (set->num_connectors > 1) {
277 DRM_ERROR("to many connectors\n");
281 if (set->num_connectors == 1 &&
282 set->connectors[0] != &sou->base.connector) {
283 DRM_ERROR("connector doesn't match %p %p\n",
284 set->connectors[0], &sou->base.connector);
288 /* sou only supports one fb active at the time */
289 if (sou->base.is_implicit &&
290 dev_priv->sou_priv->implicit_fb && vfb &&
291 !(dev_priv->sou_priv->num_implicit == 1 &&
292 sou->active_implicit) &&
293 dev_priv->sou_priv->implicit_fb != vfb) {
294 DRM_ERROR("Multiple framebuffers not supported\n");
298 /* since they always map one to one these are safe */
299 connector = &sou->base.connector;
300 encoder = &sou->base.encoder;
302 /* should we turn the crtc off */
303 if (set->num_connectors == 0 || !set->mode || !set->fb) {
304 ret = vmw_sou_fifo_destroy(dev_priv, sou);
305 /* the hardware has hung don't do anything more */
306 if (unlikely(ret != 0))
309 connector->encoder = NULL;
310 encoder->crtc = NULL;
311 crtc->primary->fb = NULL;
314 crtc->enabled = false;
316 vmw_sou_del_active(dev_priv, sou);
318 vmw_sou_backing_free(dev_priv, sou);
324 /* we now know we want to set a mode */
328 if (set->x + mode->hdisplay > fb->width ||
329 set->y + mode->vdisplay > fb->height) {
330 DRM_ERROR("set outside of framebuffer\n");
334 vmw_fb_off(dev_priv);
336 if (mode->hdisplay != crtc->mode.hdisplay ||
337 mode->vdisplay != crtc->mode.vdisplay) {
338 /* no need to check if depth is different, because backing
339 * store depth is forced to 4 by the device.
342 ret = vmw_sou_fifo_destroy(dev_priv, sou);
343 /* the hardware has hung don't do anything more */
344 if (unlikely(ret != 0))
347 vmw_sou_backing_free(dev_priv, sou);
351 /* forced to depth 4 by the device */
352 size_t size = mode->hdisplay * mode->vdisplay * 4;
353 ret = vmw_sou_backing_alloc(dev_priv, sou, size);
354 if (unlikely(ret != 0))
358 ret = vmw_sou_fifo_create(dev_priv, sou, set->x, set->y, mode);
359 if (unlikely(ret != 0)) {
361 * We are in a bit of a situation here, the hardware has
362 * hung and we may or may not have a buffer hanging of
363 * the screen object, best thing to do is not do anything
364 * if we where defined, if not just turn the crtc of.
365 * Not what userspace wants but it needs to htfu.
370 connector->encoder = NULL;
371 encoder->crtc = NULL;
372 crtc->primary->fb = NULL;
375 crtc->enabled = false;
380 vmw_sou_add_active(dev_priv, sou, vfb);
382 connector->encoder = encoder;
383 encoder->crtc = crtc;
385 crtc->primary->fb = fb;
388 crtc->enabled = true;
393 static struct drm_crtc_funcs vmw_screen_object_crtc_funcs = {
394 .save = vmw_du_crtc_save,
395 .restore = vmw_du_crtc_restore,
396 .cursor_set = vmw_du_crtc_cursor_set,
397 .cursor_move = vmw_du_crtc_cursor_move,
398 .gamma_set = vmw_du_crtc_gamma_set,
399 .destroy = vmw_sou_crtc_destroy,
400 .set_config = vmw_sou_crtc_set_config,
401 .page_flip = vmw_du_page_flip,
405 * Screen Object Display Unit encoder functions
408 static void vmw_sou_encoder_destroy(struct drm_encoder *encoder)
410 vmw_sou_destroy(vmw_encoder_to_sou(encoder));
413 static struct drm_encoder_funcs vmw_screen_object_encoder_funcs = {
414 .destroy = vmw_sou_encoder_destroy,
418 * Screen Object Display Unit connector functions
421 static void vmw_sou_connector_destroy(struct drm_connector *connector)
423 vmw_sou_destroy(vmw_connector_to_sou(connector));
426 static struct drm_connector_funcs vmw_legacy_connector_funcs = {
427 .dpms = vmw_du_connector_dpms,
428 .save = vmw_du_connector_save,
429 .restore = vmw_du_connector_restore,
430 .detect = vmw_du_connector_detect,
431 .fill_modes = vmw_du_connector_fill_modes,
432 .set_property = vmw_du_connector_set_property,
433 .destroy = vmw_sou_connector_destroy,
436 static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit)
438 struct vmw_screen_object_unit *sou;
439 struct drm_device *dev = dev_priv->dev;
440 struct drm_connector *connector;
441 struct drm_encoder *encoder;
442 struct drm_crtc *crtc;
444 sou = kzalloc(sizeof(*sou), GFP_KERNEL);
448 sou->base.unit = unit;
449 crtc = &sou->base.crtc;
450 encoder = &sou->base.encoder;
451 connector = &sou->base.connector;
453 sou->active_implicit = false;
455 sou->base.pref_active = (unit == 0);
456 sou->base.pref_width = dev_priv->initial_width;
457 sou->base.pref_height = dev_priv->initial_height;
458 sou->base.pref_mode = NULL;
459 sou->base.is_implicit = true;
461 drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
462 DRM_MODE_CONNECTOR_VIRTUAL);
463 connector->status = vmw_du_connector_detect(connector, true);
465 drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs,
466 DRM_MODE_ENCODER_VIRTUAL);
467 drm_mode_connector_attach_encoder(connector, encoder);
468 encoder->possible_crtcs = (1 << unit);
469 encoder->possible_clones = 0;
471 (void) drm_connector_register(connector);
473 drm_crtc_init(dev, crtc, &vmw_screen_object_crtc_funcs);
475 drm_mode_crtc_set_gamma_size(crtc, 256);
477 drm_object_attach_property(&connector->base,
478 dev->mode_config.dirty_info_property,
484 int vmw_kms_init_screen_object_display(struct vmw_private *dev_priv)
486 struct drm_device *dev = dev_priv->dev;
489 if (dev_priv->sou_priv) {
490 DRM_INFO("sou system already on\n");
494 if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) {
495 DRM_INFO("Not using screen objects,"
496 " missing cap SCREEN_OBJECT_2\n");
501 dev_priv->sou_priv = kmalloc(sizeof(*dev_priv->sou_priv), GFP_KERNEL);
502 if (unlikely(!dev_priv->sou_priv))
505 dev_priv->sou_priv->num_implicit = 0;
506 dev_priv->sou_priv->implicit_fb = NULL;
508 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
509 if (unlikely(ret != 0))
512 ret = drm_mode_create_dirty_info_property(dev);
513 if (unlikely(ret != 0))
514 goto err_vblank_cleanup;
516 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
517 vmw_sou_init(dev_priv, i);
519 DRM_INFO("Screen objects system initialized\n");
524 drm_vblank_cleanup(dev);
526 kfree(dev_priv->sou_priv);
527 dev_priv->sou_priv = NULL;
532 int vmw_kms_close_screen_object_display(struct vmw_private *dev_priv)
534 struct drm_device *dev = dev_priv->dev;
536 if (!dev_priv->sou_priv)
539 drm_vblank_cleanup(dev);
541 kfree(dev_priv->sou_priv);
547 * Returns if this unit can be page flipped.
548 * Must be called with the mode_config mutex held.
550 bool vmw_kms_screen_object_flippable(struct vmw_private *dev_priv,
551 struct drm_crtc *crtc)
553 struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc);
555 if (!sou->base.is_implicit)
558 if (dev_priv->sou_priv->num_implicit != 1)
565 * Update the implicit fb to the current fb of this crtc.
566 * Must be called with the mode_config mutex held.
568 void vmw_kms_screen_object_update_implicit_fb(struct vmw_private *dev_priv,
569 struct drm_crtc *crtc)
571 struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc);
573 BUG_ON(!sou->base.is_implicit);
575 dev_priv->sou_priv->implicit_fb =
576 vmw_framebuffer_to_vfb(sou->base.crtc.primary->fb);