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1/*
2 * Copyright (C) 2015 Red Hat, Inc.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26#include <drm/drm_atomic_helper.h>
27#include <drm/drm_damage_helper.h>
28#include <drm/drm_fourcc.h>
29
30#include "virtgpu_drv.h"
31
32static const uint32_t virtio_gpu_formats[] = {
33 DRM_FORMAT_HOST_XRGB8888,
34};
35
36static const uint32_t virtio_gpu_cursor_formats[] = {
37 DRM_FORMAT_HOST_ARGB8888,
38};
39
40uint32_t virtio_gpu_translate_format(uint32_t drm_fourcc)
41{
42 uint32_t format;
43
44 switch (drm_fourcc) {
45 case DRM_FORMAT_XRGB8888:
46 format = VIRTIO_GPU_FORMAT_B8G8R8X8_UNORM;
47 break;
48 case DRM_FORMAT_ARGB8888:
49 format = VIRTIO_GPU_FORMAT_B8G8R8A8_UNORM;
50 break;
51 case DRM_FORMAT_BGRX8888:
52 format = VIRTIO_GPU_FORMAT_X8R8G8B8_UNORM;
53 break;
54 case DRM_FORMAT_BGRA8888:
55 format = VIRTIO_GPU_FORMAT_A8R8G8B8_UNORM;
56 break;
57 default:
58 /*
59 * This should not happen, we handle everything listed
60 * in virtio_gpu_formats[].
61 */
62 format = 0;
63 break;
64 }
65 WARN_ON(format == 0);
66 return format;
67}
68
69static struct
70drm_plane_state *virtio_gpu_plane_duplicate_state(struct drm_plane *plane)
71{
72 struct virtio_gpu_plane_state *new;
73
74 if (WARN_ON(!plane->state))
75 return NULL;
76
77 new = kzalloc(sizeof(*new), GFP_KERNEL);
78 if (!new)
79 return NULL;
80
81 __drm_atomic_helper_plane_duplicate_state(plane, &new->base);
82
83 return &new->base;
84}
85
86static const struct drm_plane_funcs virtio_gpu_plane_funcs = {
87 .update_plane = drm_atomic_helper_update_plane,
88 .disable_plane = drm_atomic_helper_disable_plane,
89 .reset = drm_atomic_helper_plane_reset,
90 .atomic_duplicate_state = virtio_gpu_plane_duplicate_state,
91 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
92};
93
94static int virtio_gpu_plane_atomic_check(struct drm_plane *plane,
95 struct drm_atomic_state *state)
96{
97 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
98 plane);
99 struct drm_plane_state *old_plane_state = drm_atomic_get_old_plane_state(state,
100 plane);
101 bool is_cursor = plane->type == DRM_PLANE_TYPE_CURSOR;
102 struct drm_crtc_state *crtc_state;
103 int ret;
104
105 if (!new_plane_state->fb || WARN_ON(!new_plane_state->crtc))
106 return 0;
107
108 /*
109 * Ignore damage clips if the framebuffer attached to the plane's state
110 * has changed since the last plane update (page-flip). In this case, a
111 * full plane update should happen because uploads are done per-buffer.
112 */
113 if (old_plane_state->fb != new_plane_state->fb)
114 new_plane_state->ignore_damage_clips = true;
115
116 crtc_state = drm_atomic_get_crtc_state(state,
117 new_plane_state->crtc);
118 if (IS_ERR(crtc_state))
119 return PTR_ERR(crtc_state);
120
121 ret = drm_atomic_helper_check_plane_state(new_plane_state, crtc_state,
122 DRM_PLANE_NO_SCALING,
123 DRM_PLANE_NO_SCALING,
124 is_cursor, true);
125 return ret;
126}
127
128static void virtio_gpu_update_dumb_bo(struct virtio_gpu_device *vgdev,
129 struct drm_plane_state *state,
130 struct drm_rect *rect)
131{
132 struct virtio_gpu_object *bo =
133 gem_to_virtio_gpu_obj(state->fb->obj[0]);
134 struct virtio_gpu_object_array *objs;
135 uint32_t w = rect->x2 - rect->x1;
136 uint32_t h = rect->y2 - rect->y1;
137 uint32_t x = rect->x1;
138 uint32_t y = rect->y1;
139 uint32_t off = x * state->fb->format->cpp[0] +
140 y * state->fb->pitches[0];
141
142 objs = virtio_gpu_array_alloc(1);
143 if (!objs)
144 return;
145 virtio_gpu_array_add_obj(objs, &bo->base.base);
146
147 virtio_gpu_cmd_transfer_to_host_2d(vgdev, off, w, h, x, y,
148 objs, NULL);
149}
150
151static void virtio_gpu_resource_flush(struct drm_plane *plane,
152 uint32_t x, uint32_t y,
153 uint32_t width, uint32_t height)
154{
155 struct drm_device *dev = plane->dev;
156 struct virtio_gpu_device *vgdev = dev->dev_private;
157 struct virtio_gpu_framebuffer *vgfb;
158 struct virtio_gpu_plane_state *vgplane_st;
159 struct virtio_gpu_object *bo;
160
161 vgfb = to_virtio_gpu_framebuffer(plane->state->fb);
162 vgplane_st = to_virtio_gpu_plane_state(plane->state);
163 bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]);
164 if (vgplane_st->fence) {
165 struct virtio_gpu_object_array *objs;
166
167 objs = virtio_gpu_array_alloc(1);
168 if (!objs)
169 return;
170 virtio_gpu_array_add_obj(objs, vgfb->base.obj[0]);
171 virtio_gpu_array_lock_resv(objs);
172 virtio_gpu_cmd_resource_flush(vgdev, bo->hw_res_handle, x, y,
173 width, height, objs,
174 vgplane_st->fence);
175 virtio_gpu_notify(vgdev);
176 dma_fence_wait_timeout(&vgplane_st->fence->f, true,
177 msecs_to_jiffies(50));
178 } else {
179 virtio_gpu_cmd_resource_flush(vgdev, bo->hw_res_handle, x, y,
180 width, height, NULL, NULL);
181 virtio_gpu_notify(vgdev);
182 }
183}
184
185static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
186 struct drm_atomic_state *state)
187{
188 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
189 plane);
190 struct drm_device *dev = plane->dev;
191 struct virtio_gpu_device *vgdev = dev->dev_private;
192 struct virtio_gpu_output *output = NULL;
193 struct virtio_gpu_object *bo;
194 struct drm_rect rect;
195
196 if (plane->state->crtc)
197 output = drm_crtc_to_virtio_gpu_output(plane->state->crtc);
198 if (old_state->crtc)
199 output = drm_crtc_to_virtio_gpu_output(old_state->crtc);
200 if (WARN_ON(!output))
201 return;
202
203 if (!plane->state->fb || !output->crtc.state->active) {
204 DRM_DEBUG("nofb\n");
205 virtio_gpu_cmd_set_scanout(vgdev, output->index, 0,
206 plane->state->src_w >> 16,
207 plane->state->src_h >> 16,
208 0, 0);
209 virtio_gpu_notify(vgdev);
210 return;
211 }
212
213 if (!drm_atomic_helper_damage_merged(old_state, plane->state, &rect))
214 return;
215
216 bo = gem_to_virtio_gpu_obj(plane->state->fb->obj[0]);
217 if (bo->dumb)
218 virtio_gpu_update_dumb_bo(vgdev, plane->state, &rect);
219
220 if (plane->state->fb != old_state->fb ||
221 plane->state->src_w != old_state->src_w ||
222 plane->state->src_h != old_state->src_h ||
223 plane->state->src_x != old_state->src_x ||
224 plane->state->src_y != old_state->src_y ||
225 output->needs_modeset) {
226 output->needs_modeset = false;
227 DRM_DEBUG("handle 0x%x, crtc %dx%d+%d+%d, src %dx%d+%d+%d\n",
228 bo->hw_res_handle,
229 plane->state->crtc_w, plane->state->crtc_h,
230 plane->state->crtc_x, plane->state->crtc_y,
231 plane->state->src_w >> 16,
232 plane->state->src_h >> 16,
233 plane->state->src_x >> 16,
234 plane->state->src_y >> 16);
235
236 if (bo->host3d_blob || bo->guest_blob) {
237 virtio_gpu_cmd_set_scanout_blob
238 (vgdev, output->index, bo,
239 plane->state->fb,
240 plane->state->src_w >> 16,
241 plane->state->src_h >> 16,
242 plane->state->src_x >> 16,
243 plane->state->src_y >> 16);
244 } else {
245 virtio_gpu_cmd_set_scanout(vgdev, output->index,
246 bo->hw_res_handle,
247 plane->state->src_w >> 16,
248 plane->state->src_h >> 16,
249 plane->state->src_x >> 16,
250 plane->state->src_y >> 16);
251 }
252 }
253
254 virtio_gpu_resource_flush(plane,
255 rect.x1,
256 rect.y1,
257 rect.x2 - rect.x1,
258 rect.y2 - rect.y1);
259}
260
261static int virtio_gpu_plane_prepare_fb(struct drm_plane *plane,
262 struct drm_plane_state *new_state)
263{
264 struct drm_device *dev = plane->dev;
265 struct virtio_gpu_device *vgdev = dev->dev_private;
266 struct virtio_gpu_framebuffer *vgfb;
267 struct virtio_gpu_plane_state *vgplane_st;
268 struct virtio_gpu_object *bo;
269
270 if (!new_state->fb)
271 return 0;
272
273 vgfb = to_virtio_gpu_framebuffer(new_state->fb);
274 vgplane_st = to_virtio_gpu_plane_state(new_state);
275 bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]);
276 if (!bo || (plane->type == DRM_PLANE_TYPE_PRIMARY && !bo->guest_blob))
277 return 0;
278
279 if (bo->dumb) {
280 vgplane_st->fence = virtio_gpu_fence_alloc(vgdev,
281 vgdev->fence_drv.context,
282 0);
283 if (!vgplane_st->fence)
284 return -ENOMEM;
285 }
286
287 return 0;
288}
289
290static void virtio_gpu_plane_cleanup_fb(struct drm_plane *plane,
291 struct drm_plane_state *state)
292{
293 struct virtio_gpu_plane_state *vgplane_st;
294
295 if (!state->fb)
296 return;
297
298 vgplane_st = to_virtio_gpu_plane_state(state);
299 if (vgplane_st->fence) {
300 dma_fence_put(&vgplane_st->fence->f);
301 vgplane_st->fence = NULL;
302 }
303}
304
305static void virtio_gpu_cursor_plane_update(struct drm_plane *plane,
306 struct drm_atomic_state *state)
307{
308 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
309 plane);
310 struct drm_device *dev = plane->dev;
311 struct virtio_gpu_device *vgdev = dev->dev_private;
312 struct virtio_gpu_output *output = NULL;
313 struct virtio_gpu_framebuffer *vgfb;
314 struct virtio_gpu_plane_state *vgplane_st;
315 struct virtio_gpu_object *bo = NULL;
316 uint32_t handle;
317
318 if (plane->state->crtc)
319 output = drm_crtc_to_virtio_gpu_output(plane->state->crtc);
320 if (old_state->crtc)
321 output = drm_crtc_to_virtio_gpu_output(old_state->crtc);
322 if (WARN_ON(!output))
323 return;
324
325 if (plane->state->fb) {
326 vgfb = to_virtio_gpu_framebuffer(plane->state->fb);
327 vgplane_st = to_virtio_gpu_plane_state(plane->state);
328 bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]);
329 handle = bo->hw_res_handle;
330 } else {
331 handle = 0;
332 }
333
334 if (bo && bo->dumb && (plane->state->fb != old_state->fb)) {
335 /* new cursor -- update & wait */
336 struct virtio_gpu_object_array *objs;
337
338 objs = virtio_gpu_array_alloc(1);
339 if (!objs)
340 return;
341 virtio_gpu_array_add_obj(objs, vgfb->base.obj[0]);
342 virtio_gpu_array_lock_resv(objs);
343 virtio_gpu_cmd_transfer_to_host_2d
344 (vgdev, 0,
345 plane->state->crtc_w,
346 plane->state->crtc_h,
347 0, 0, objs, vgplane_st->fence);
348 virtio_gpu_notify(vgdev);
349 dma_fence_wait(&vgplane_st->fence->f, true);
350 }
351
352 if (plane->state->fb != old_state->fb) {
353 DRM_DEBUG("update, handle %d, pos +%d+%d, hot %d,%d\n", handle,
354 plane->state->crtc_x,
355 plane->state->crtc_y,
356 plane->state->hotspot_x,
357 plane->state->hotspot_y);
358 output->cursor.hdr.type =
359 cpu_to_le32(VIRTIO_GPU_CMD_UPDATE_CURSOR);
360 output->cursor.resource_id = cpu_to_le32(handle);
361 if (plane->state->fb) {
362 output->cursor.hot_x =
363 cpu_to_le32(plane->state->hotspot_x);
364 output->cursor.hot_y =
365 cpu_to_le32(plane->state->hotspot_y);
366 } else {
367 output->cursor.hot_x = cpu_to_le32(0);
368 output->cursor.hot_y = cpu_to_le32(0);
369 }
370 } else {
371 DRM_DEBUG("move +%d+%d\n",
372 plane->state->crtc_x,
373 plane->state->crtc_y);
374 output->cursor.hdr.type =
375 cpu_to_le32(VIRTIO_GPU_CMD_MOVE_CURSOR);
376 }
377 output->cursor.pos.x = cpu_to_le32(plane->state->crtc_x);
378 output->cursor.pos.y = cpu_to_le32(plane->state->crtc_y);
379 virtio_gpu_cursor_ping(vgdev, output);
380}
381
382static const struct drm_plane_helper_funcs virtio_gpu_primary_helper_funcs = {
383 .prepare_fb = virtio_gpu_plane_prepare_fb,
384 .cleanup_fb = virtio_gpu_plane_cleanup_fb,
385 .atomic_check = virtio_gpu_plane_atomic_check,
386 .atomic_update = virtio_gpu_primary_plane_update,
387};
388
389static const struct drm_plane_helper_funcs virtio_gpu_cursor_helper_funcs = {
390 .prepare_fb = virtio_gpu_plane_prepare_fb,
391 .cleanup_fb = virtio_gpu_plane_cleanup_fb,
392 .atomic_check = virtio_gpu_plane_atomic_check,
393 .atomic_update = virtio_gpu_cursor_plane_update,
394};
395
396struct drm_plane *virtio_gpu_plane_init(struct virtio_gpu_device *vgdev,
397 enum drm_plane_type type,
398 int index)
399{
400 struct drm_device *dev = vgdev->ddev;
401 const struct drm_plane_helper_funcs *funcs;
402 struct drm_plane *plane;
403 const uint32_t *formats;
404 int nformats;
405
406 if (type == DRM_PLANE_TYPE_CURSOR) {
407 formats = virtio_gpu_cursor_formats;
408 nformats = ARRAY_SIZE(virtio_gpu_cursor_formats);
409 funcs = &virtio_gpu_cursor_helper_funcs;
410 } else {
411 formats = virtio_gpu_formats;
412 nformats = ARRAY_SIZE(virtio_gpu_formats);
413 funcs = &virtio_gpu_primary_helper_funcs;
414 }
415
416 plane = drmm_universal_plane_alloc(dev, struct drm_plane, dev,
417 1 << index, &virtio_gpu_plane_funcs,
418 formats, nformats, NULL, type, NULL);
419 if (IS_ERR(plane))
420 return plane;
421
422 drm_plane_helper_add(plane, funcs);
423
424 if (type == DRM_PLANE_TYPE_PRIMARY)
425 drm_plane_enable_fb_damage_clips(plane);
426
427 return plane;
428}