drm/vmwgfx: Use preprocessor macro for FIFO allocation
[linux/fpc-iii.git] / drivers / gpu / drm / vmwgfx / vmwgfx_ldu.c
blob25e6343bcf2173dc32a8eae55a71486ae1e13ce4
1 // SPDX-License-Identifier: GPL-2.0 OR MIT
2 /**************************************************************************
4 * Copyright 2009-2015 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
16 * of the Software.
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>
30 #include <drm/drm_atomic.h>
31 #include <drm/drm_atomic_helper.h>
34 #define vmw_crtc_to_ldu(x) \
35 container_of(x, struct vmw_legacy_display_unit, base.crtc)
36 #define vmw_encoder_to_ldu(x) \
37 container_of(x, struct vmw_legacy_display_unit, base.encoder)
38 #define vmw_connector_to_ldu(x) \
39 container_of(x, struct vmw_legacy_display_unit, base.connector)
41 struct vmw_legacy_display {
42 struct list_head active;
44 unsigned num_active;
45 unsigned last_num_active;
47 struct vmw_framebuffer *fb;
50 /**
51 * Display unit using the legacy register interface.
53 struct vmw_legacy_display_unit {
54 struct vmw_display_unit base;
56 struct list_head active;
59 static void vmw_ldu_destroy(struct vmw_legacy_display_unit *ldu)
61 list_del_init(&ldu->active);
62 vmw_du_cleanup(&ldu->base);
63 kfree(ldu);
68 * Legacy Display Unit CRTC functions
71 static void vmw_ldu_crtc_destroy(struct drm_crtc *crtc)
73 vmw_ldu_destroy(vmw_crtc_to_ldu(crtc));
76 static int vmw_ldu_commit_list(struct vmw_private *dev_priv)
78 struct vmw_legacy_display *lds = dev_priv->ldu_priv;
79 struct vmw_legacy_display_unit *entry;
80 struct drm_framebuffer *fb = NULL;
81 struct drm_crtc *crtc = NULL;
82 int i = 0;
84 /* If there is no display topology the host just assumes
85 * that the guest will set the same layout as the host.
87 if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY)) {
88 int w = 0, h = 0;
89 list_for_each_entry(entry, &lds->active, active) {
90 crtc = &entry->base.crtc;
91 w = max(w, crtc->x + crtc->mode.hdisplay);
92 h = max(h, crtc->y + crtc->mode.vdisplay);
93 i++;
96 if (crtc == NULL)
97 return 0;
98 fb = entry->base.crtc.primary->state->fb;
100 return vmw_kms_write_svga(dev_priv, w, h, fb->pitches[0],
101 fb->format->cpp[0] * 8,
102 fb->format->depth);
105 if (!list_empty(&lds->active)) {
106 entry = list_entry(lds->active.next, typeof(*entry), active);
107 fb = entry->base.crtc.primary->state->fb;
109 vmw_kms_write_svga(dev_priv, fb->width, fb->height, fb->pitches[0],
110 fb->format->cpp[0] * 8, fb->format->depth);
113 /* Make sure we always show something. */
114 vmw_write(dev_priv, SVGA_REG_NUM_GUEST_DISPLAYS,
115 lds->num_active ? lds->num_active : 1);
117 i = 0;
118 list_for_each_entry(entry, &lds->active, active) {
119 crtc = &entry->base.crtc;
121 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, i);
122 vmw_write(dev_priv, SVGA_REG_DISPLAY_IS_PRIMARY, !i);
123 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_X, crtc->x);
124 vmw_write(dev_priv, SVGA_REG_DISPLAY_POSITION_Y, crtc->y);
125 vmw_write(dev_priv, SVGA_REG_DISPLAY_WIDTH, crtc->mode.hdisplay);
126 vmw_write(dev_priv, SVGA_REG_DISPLAY_HEIGHT, crtc->mode.vdisplay);
127 vmw_write(dev_priv, SVGA_REG_DISPLAY_ID, SVGA_ID_INVALID);
129 i++;
132 BUG_ON(i != lds->num_active);
134 lds->last_num_active = lds->num_active;
136 return 0;
139 static int vmw_ldu_del_active(struct vmw_private *vmw_priv,
140 struct vmw_legacy_display_unit *ldu)
142 struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
143 if (list_empty(&ldu->active))
144 return 0;
146 /* Must init otherwise list_empty(&ldu->active) will not work. */
147 list_del_init(&ldu->active);
148 if (--(ld->num_active) == 0) {
149 BUG_ON(!ld->fb);
150 if (ld->fb->unpin)
151 ld->fb->unpin(ld->fb);
152 ld->fb = NULL;
155 return 0;
158 static int vmw_ldu_add_active(struct vmw_private *vmw_priv,
159 struct vmw_legacy_display_unit *ldu,
160 struct vmw_framebuffer *vfb)
162 struct vmw_legacy_display *ld = vmw_priv->ldu_priv;
163 struct vmw_legacy_display_unit *entry;
164 struct list_head *at;
166 BUG_ON(!ld->num_active && ld->fb);
167 if (vfb != ld->fb) {
168 if (ld->fb && ld->fb->unpin)
169 ld->fb->unpin(ld->fb);
170 vmw_svga_enable(vmw_priv);
171 if (vfb->pin)
172 vfb->pin(vfb);
173 ld->fb = vfb;
176 if (!list_empty(&ldu->active))
177 return 0;
179 at = &ld->active;
180 list_for_each_entry(entry, &ld->active, active) {
181 if (entry->base.unit > ldu->base.unit)
182 break;
184 at = &entry->active;
187 list_add(&ldu->active, at);
189 ld->num_active++;
191 return 0;
195 * vmw_ldu_crtc_mode_set_nofb - Enable svga
197 * @crtc: CRTC associated with the new screen
199 * For LDU, just enable the svga
201 static void vmw_ldu_crtc_mode_set_nofb(struct drm_crtc *crtc)
206 * vmw_ldu_crtc_atomic_enable - Noop
208 * @crtc: CRTC associated with the new screen
210 * This is called after a mode set has been completed. Here's
211 * usually a good place to call vmw_ldu_add_active/vmw_ldu_del_active
212 * but since for LDU the display plane is closely tied to the
213 * CRTC, it makes more sense to do those at plane update time.
215 static void vmw_ldu_crtc_atomic_enable(struct drm_crtc *crtc,
216 struct drm_crtc_state *old_state)
221 * vmw_ldu_crtc_atomic_disable - Turns off CRTC
223 * @crtc: CRTC to be turned off
225 static void vmw_ldu_crtc_atomic_disable(struct drm_crtc *crtc,
226 struct drm_crtc_state *old_state)
230 static const struct drm_crtc_funcs vmw_legacy_crtc_funcs = {
231 .gamma_set = vmw_du_crtc_gamma_set,
232 .destroy = vmw_ldu_crtc_destroy,
233 .reset = vmw_du_crtc_reset,
234 .atomic_duplicate_state = vmw_du_crtc_duplicate_state,
235 .atomic_destroy_state = vmw_du_crtc_destroy_state,
236 .set_config = drm_atomic_helper_set_config,
241 * Legacy Display Unit encoder functions
244 static void vmw_ldu_encoder_destroy(struct drm_encoder *encoder)
246 vmw_ldu_destroy(vmw_encoder_to_ldu(encoder));
249 static const struct drm_encoder_funcs vmw_legacy_encoder_funcs = {
250 .destroy = vmw_ldu_encoder_destroy,
254 * Legacy Display Unit connector functions
257 static void vmw_ldu_connector_destroy(struct drm_connector *connector)
259 vmw_ldu_destroy(vmw_connector_to_ldu(connector));
262 static const struct drm_connector_funcs vmw_legacy_connector_funcs = {
263 .dpms = vmw_du_connector_dpms,
264 .detect = vmw_du_connector_detect,
265 .fill_modes = vmw_du_connector_fill_modes,
266 .destroy = vmw_ldu_connector_destroy,
267 .reset = vmw_du_connector_reset,
268 .atomic_duplicate_state = vmw_du_connector_duplicate_state,
269 .atomic_destroy_state = vmw_du_connector_destroy_state,
272 static const struct
273 drm_connector_helper_funcs vmw_ldu_connector_helper_funcs = {
277 * Legacy Display Plane Functions
280 static void
281 vmw_ldu_primary_plane_atomic_update(struct drm_plane *plane,
282 struct drm_plane_state *old_state)
284 struct vmw_private *dev_priv;
285 struct vmw_legacy_display_unit *ldu;
286 struct vmw_framebuffer *vfb;
287 struct drm_framebuffer *fb;
288 struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc;
291 ldu = vmw_crtc_to_ldu(crtc);
292 dev_priv = vmw_priv(plane->dev);
293 fb = plane->state->fb;
295 vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
297 if (vfb)
298 vmw_ldu_add_active(dev_priv, ldu, vfb);
299 else
300 vmw_ldu_del_active(dev_priv, ldu);
302 vmw_ldu_commit_list(dev_priv);
306 static const struct drm_plane_funcs vmw_ldu_plane_funcs = {
307 .update_plane = drm_atomic_helper_update_plane,
308 .disable_plane = drm_atomic_helper_disable_plane,
309 .destroy = vmw_du_primary_plane_destroy,
310 .reset = vmw_du_plane_reset,
311 .atomic_duplicate_state = vmw_du_plane_duplicate_state,
312 .atomic_destroy_state = vmw_du_plane_destroy_state,
315 static const struct drm_plane_funcs vmw_ldu_cursor_funcs = {
316 .update_plane = drm_atomic_helper_update_plane,
317 .disable_plane = drm_atomic_helper_disable_plane,
318 .destroy = vmw_du_cursor_plane_destroy,
319 .reset = vmw_du_plane_reset,
320 .atomic_duplicate_state = vmw_du_plane_duplicate_state,
321 .atomic_destroy_state = vmw_du_plane_destroy_state,
325 * Atomic Helpers
327 static const struct
328 drm_plane_helper_funcs vmw_ldu_cursor_plane_helper_funcs = {
329 .atomic_check = vmw_du_cursor_plane_atomic_check,
330 .atomic_update = vmw_du_cursor_plane_atomic_update,
331 .prepare_fb = vmw_du_cursor_plane_prepare_fb,
332 .cleanup_fb = vmw_du_plane_cleanup_fb,
335 static const struct
336 drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = {
337 .atomic_check = vmw_du_primary_plane_atomic_check,
338 .atomic_update = vmw_ldu_primary_plane_atomic_update,
341 static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = {
342 .mode_set_nofb = vmw_ldu_crtc_mode_set_nofb,
343 .atomic_check = vmw_du_crtc_atomic_check,
344 .atomic_begin = vmw_du_crtc_atomic_begin,
345 .atomic_flush = vmw_du_crtc_atomic_flush,
346 .atomic_enable = vmw_ldu_crtc_atomic_enable,
347 .atomic_disable = vmw_ldu_crtc_atomic_disable,
351 static int vmw_ldu_init(struct vmw_private *dev_priv, unsigned unit)
353 struct vmw_legacy_display_unit *ldu;
354 struct drm_device *dev = dev_priv->dev;
355 struct drm_connector *connector;
356 struct drm_encoder *encoder;
357 struct drm_plane *primary, *cursor;
358 struct drm_crtc *crtc;
359 int ret;
361 ldu = kzalloc(sizeof(*ldu), GFP_KERNEL);
362 if (!ldu)
363 return -ENOMEM;
365 ldu->base.unit = unit;
366 crtc = &ldu->base.crtc;
367 encoder = &ldu->base.encoder;
368 connector = &ldu->base.connector;
369 primary = &ldu->base.primary;
370 cursor = &ldu->base.cursor;
372 INIT_LIST_HEAD(&ldu->active);
374 ldu->base.pref_active = (unit == 0);
375 ldu->base.pref_width = dev_priv->initial_width;
376 ldu->base.pref_height = dev_priv->initial_height;
377 ldu->base.pref_mode = NULL;
380 * Remove this after enabling atomic because property values can
381 * only exist in a state object
383 ldu->base.is_implicit = true;
385 /* Initialize primary plane */
386 vmw_du_plane_reset(primary);
388 ret = drm_universal_plane_init(dev, &ldu->base.primary,
389 0, &vmw_ldu_plane_funcs,
390 vmw_primary_plane_formats,
391 ARRAY_SIZE(vmw_primary_plane_formats),
392 NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
393 if (ret) {
394 DRM_ERROR("Failed to initialize primary plane");
395 goto err_free;
398 drm_plane_helper_add(primary, &vmw_ldu_primary_plane_helper_funcs);
400 /* Initialize cursor plane */
401 vmw_du_plane_reset(cursor);
403 ret = drm_universal_plane_init(dev, &ldu->base.cursor,
404 0, &vmw_ldu_cursor_funcs,
405 vmw_cursor_plane_formats,
406 ARRAY_SIZE(vmw_cursor_plane_formats),
407 NULL, DRM_PLANE_TYPE_CURSOR, NULL);
408 if (ret) {
409 DRM_ERROR("Failed to initialize cursor plane");
410 drm_plane_cleanup(&ldu->base.primary);
411 goto err_free;
414 drm_plane_helper_add(cursor, &vmw_ldu_cursor_plane_helper_funcs);
416 vmw_du_connector_reset(connector);
417 ret = drm_connector_init(dev, connector, &vmw_legacy_connector_funcs,
418 DRM_MODE_CONNECTOR_VIRTUAL);
419 if (ret) {
420 DRM_ERROR("Failed to initialize connector\n");
421 goto err_free;
424 drm_connector_helper_add(connector, &vmw_ldu_connector_helper_funcs);
425 connector->status = vmw_du_connector_detect(connector, true);
427 ret = drm_encoder_init(dev, encoder, &vmw_legacy_encoder_funcs,
428 DRM_MODE_ENCODER_VIRTUAL, NULL);
429 if (ret) {
430 DRM_ERROR("Failed to initialize encoder\n");
431 goto err_free_connector;
434 (void) drm_connector_attach_encoder(connector, encoder);
435 encoder->possible_crtcs = (1 << unit);
436 encoder->possible_clones = 0;
438 ret = drm_connector_register(connector);
439 if (ret) {
440 DRM_ERROR("Failed to register connector\n");
441 goto err_free_encoder;
444 vmw_du_crtc_reset(crtc);
445 ret = drm_crtc_init_with_planes(dev, crtc, &ldu->base.primary,
446 &ldu->base.cursor,
447 &vmw_legacy_crtc_funcs, NULL);
448 if (ret) {
449 DRM_ERROR("Failed to initialize CRTC\n");
450 goto err_free_unregister;
453 drm_crtc_helper_add(crtc, &vmw_ldu_crtc_helper_funcs);
455 drm_mode_crtc_set_gamma_size(crtc, 256);
457 drm_object_attach_property(&connector->base,
458 dev_priv->hotplug_mode_update_property, 1);
459 drm_object_attach_property(&connector->base,
460 dev->mode_config.suggested_x_property, 0);
461 drm_object_attach_property(&connector->base,
462 dev->mode_config.suggested_y_property, 0);
463 if (dev_priv->implicit_placement_property)
464 drm_object_attach_property
465 (&connector->base,
466 dev_priv->implicit_placement_property,
469 return 0;
471 err_free_unregister:
472 drm_connector_unregister(connector);
473 err_free_encoder:
474 drm_encoder_cleanup(encoder);
475 err_free_connector:
476 drm_connector_cleanup(connector);
477 err_free:
478 kfree(ldu);
479 return ret;
482 int vmw_kms_ldu_init_display(struct vmw_private *dev_priv)
484 struct drm_device *dev = dev_priv->dev;
485 int i, ret;
487 if (dev_priv->ldu_priv) {
488 DRM_INFO("ldu system already on\n");
489 return -EINVAL;
492 dev_priv->ldu_priv = kmalloc(sizeof(*dev_priv->ldu_priv), GFP_KERNEL);
493 if (!dev_priv->ldu_priv)
494 return -ENOMEM;
496 INIT_LIST_HEAD(&dev_priv->ldu_priv->active);
497 dev_priv->ldu_priv->num_active = 0;
498 dev_priv->ldu_priv->last_num_active = 0;
499 dev_priv->ldu_priv->fb = NULL;
501 /* for old hardware without multimon only enable one display */
502 if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
503 ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
504 else
505 ret = drm_vblank_init(dev, 1);
506 if (ret != 0)
507 goto err_free;
509 vmw_kms_create_implicit_placement_property(dev_priv);
511 if (dev_priv->capabilities & SVGA_CAP_MULTIMON)
512 for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i)
513 vmw_ldu_init(dev_priv, i);
514 else
515 vmw_ldu_init(dev_priv, 0);
517 dev_priv->active_display_unit = vmw_du_legacy;
519 DRM_INFO("Legacy Display Unit initialized\n");
521 return 0;
523 err_free:
524 kfree(dev_priv->ldu_priv);
525 dev_priv->ldu_priv = NULL;
526 return ret;
529 int vmw_kms_ldu_close_display(struct vmw_private *dev_priv)
531 if (!dev_priv->ldu_priv)
532 return -ENOSYS;
534 BUG_ON(!list_empty(&dev_priv->ldu_priv->active));
536 kfree(dev_priv->ldu_priv);
538 return 0;
542 int vmw_kms_ldu_do_bo_dirty(struct vmw_private *dev_priv,
543 struct vmw_framebuffer *framebuffer,
544 unsigned int flags, unsigned int color,
545 struct drm_clip_rect *clips,
546 unsigned int num_clips, int increment)
548 size_t fifo_size;
549 int i;
551 struct {
552 uint32_t header;
553 SVGAFifoCmdUpdate body;
554 } *cmd;
556 fifo_size = sizeof(*cmd) * num_clips;
557 cmd = VMW_FIFO_RESERVE(dev_priv, fifo_size);
558 if (unlikely(cmd == NULL))
559 return -ENOMEM;
561 memset(cmd, 0, fifo_size);
562 for (i = 0; i < num_clips; i++, clips += increment) {
563 cmd[i].header = SVGA_CMD_UPDATE;
564 cmd[i].body.x = clips->x1;
565 cmd[i].body.y = clips->y1;
566 cmd[i].body.width = clips->x2 - clips->x1;
567 cmd[i].body.height = clips->y2 - clips->y1;
570 vmw_fifo_commit(dev_priv, fifo_size);
571 return 0;