2 * Copyright (C) 2009 Chia-I Wu <olvaffe@gmail.com>
4 * This is based on the work of eagle, by
5 * Copyright © 2008, 2009 Kristian Høgsberg
7 * Permission to use, copy, modify, distribute, and sell this software and its
8 * documentation for any purpose is hereby granted without fee, provided that
9 * the above copyright notice appear in all copies and that both that copyright
10 * notice and this permission notice appear in supporting documentation, and
11 * that the name of the copyright holders not be used in advertising or
12 * publicity pertaining to distribution of the software without specific,
13 * written prior permission. The copyright holders make no representations
14 * about the suitability of this software for any purpose. It is provided "as
15 * is" without express or implied warranty.
17 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
18 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
19 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
20 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
21 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
22 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
26 #define LOG_TAG "DROID-INTEL"
27 #include <utils/Log.h>
33 #include <sys/ioctl.h>
38 #include <GL/gl.h> /* dri_interface.h uses some GL integer types... */
39 #include <GL/internal/dri_interface.h>
45 #define INTEL_IS_I965(x) ((x) & INTEL_GEN_4)
46 #define INTEL_IS_I915(x) ((x) & INTEL_GEN_3)
47 #define INTEL_IS_I9xx(x) ((x) & (INTEL_GEN_3 | INTEL_GEN_4))
48 #define INTEL_IS_I8xx(x) ((x) & (INTEL_GEN_1 | INTEL_GEN_2))
50 #define INTEL_HAS_128_BYTE_Y_TILING(x) \
51 (((x) & (INTEL_GEN_3 | INTEL_GEN_4 | INTEL_GEN_MINOR_MASK)) > INTEL_GEN_3)
54 INTEL_SURFACE_TYPE_WINDOW,
55 INTEL_SURFACE_TYPE_IMAGE,
58 /* Look at xf86-video-intel/src/common.h for the full horror of device
68 INTEL_GEN_MAJOR_MASK = 0xf0,
69 INTEL_GEN_MINOR_MASK = 0x0f,
72 struct droid_backend_intel {
73 struct droid_backend base;
82 struct droid_surface_intel {
88 __DRIbuffer native_buffer;
89 unsigned int native_width, native_height;
92 unsigned int attachments[20];
93 __DRIbuffer buffers[10];
101 static INLINE struct droid_backend_intel *
102 lookup_backend(struct droid_backend *backend)
104 return (struct droid_backend_intel *) backend;
107 static INLINE struct droid_surface_intel *
108 lookup_surface(struct droid_surface *surface)
110 return (struct droid_surface_intel *) surface;
114 intel_get_native_buffer(struct droid_backend *backend,
115 struct droid_surface *surf,
116 int *width, int *height)
118 struct droid_surface_intel *isurf = lookup_surface(surf);
120 if (!isurf->native_buffer.name)
124 *width = isurf->native_width;
126 *height = isurf->native_height;
128 return &isurf->native_buffer;
131 static INLINE uint32_t
132 align_to(uint32_t value, uint32_t align)
134 return (value + align - 1) & ~(align - 1);
138 fence_pitch(struct droid_backend *backend, int pitch, int tiling)
140 struct droid_backend_intel *intel = lookup_backend(backend);
141 int pitch_align, tile_width;
144 case I915_TILING_NONE:
146 pitch_align = intel->pitch_align;
147 tile_width = 1; /* not used */
156 (INTEL_HAS_128_BYTE_Y_TILING(intel->generation)) ? 128 : 512;
160 pitch = align_to(pitch, pitch_align);
161 if (tiling == I915_TILING_NONE)
164 /* 965+ just needs multiples of tile width */
165 if (INTEL_IS_I965(intel->generation)) {
166 pitch = align_to(pitch, tile_width);
169 /* Pre-965 needs power of two tile widths */
170 while (tile_width < pitch)
178 static INLINE uint32_t
179 fence_size(struct droid_backend *backend, int height, int pitch, int tiling)
181 struct droid_backend_intel *intel = lookup_backend(backend);
186 case I915_TILING_NONE:
188 /* Round the height up so that the GPU's access to a 2x2 aligned
189 * subspan doesn't address an invalid page offset beyond the
202 height = align_to(height, height_align);
203 size = pitch * height;
204 if (tiling == I915_TILING_NONE)
207 /* The 965 can have fences at any page boundary. */
208 if (INTEL_IS_I965(intel->generation)) {
209 size = align_to(size, 4096);
214 /* Align the size to a power of two greater than the smallest fence. */
215 if (INTEL_IS_I9xx(intel->generation))
216 fence = 1 << 20; /* 1 MiB */
218 fence = 1 << 19; /* 512 KiB */
230 create_buffer(struct droid_backend *backend, __DRIbuffer *buffer,
231 int width, int height, int cpp, int tiling)
233 struct droid_backend_intel *intel = lookup_backend(backend);
234 struct drm_i915_gem_create create;
235 struct drm_gem_flink flink;
237 buffer->pitch = fence_pitch(backend, width * cpp, tiling);
238 create.size = fence_size(backend, height, buffer->pitch, tiling);
239 if (ioctl(intel->fd, DRM_IOCTL_I915_GEM_CREATE, &create)) {
240 LOGE("failed to create buffer");
244 if (tiling != I915_TILING_NONE) {
245 struct drm_i915_gem_set_tiling set_tiling;
247 memset(&set_tiling, 0, sizeof(set_tiling));
248 set_tiling.handle = create.handle;
249 set_tiling.tiling_mode = tiling;
250 set_tiling.stride = buffer->pitch;
252 if (ioctl(intel->fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling))
253 LOGW("failed to enable tiling");
256 flink.handle = create.handle;
257 if (ioctl(intel->fd, DRM_IOCTL_GEM_FLINK, &flink) < 0) {
258 LOGE("failed to flink buffer");
262 buffer->name = flink.name;
266 return create.handle;
270 delete_buffers(struct droid_backend *backend, struct droid_surface *surf)
272 struct droid_backend_intel *intel = lookup_backend(backend);
273 struct droid_surface_intel *isurf = lookup_surface(surf);
276 for (i = 0; i < isurf->num_buffers; i++) {
277 if (isurf->handles[i]) {
278 struct drm_gem_close close;
280 close.handle = isurf->handles[i];
281 if (ioctl(intel->fd, DRM_IOCTL_GEM_CLOSE, &close) < 0)
282 LOGE("failed to close bo %d", close.handle);
283 isurf->handles[i] = 0;
287 isurf->num_buffers = 0;
291 intel_get_surface_buffers(struct droid_backend *backend,
292 struct droid_surface *surf,
293 int *width, int *height,
294 unsigned int *attachments, int count,
295 int *out_count, int has_format)
297 struct droid_backend_intel *intel = lookup_backend(backend);
298 struct droid_surface_intel *isurf = lookup_surface(surf);
299 unsigned int att_size;
300 __DRIbuffer buffers[10];
301 uint32_t handles[10];
305 LOGW("too many buffers requested");
309 att_size = sizeof(attachments[0]) * count * ((has_format) ? 2 : 1);
311 if (isurf->native_changed) {
312 delete_buffers(backend, surf);
313 isurf->native_changed = 0;
316 /* same buffers requested */
317 if (isurf->num_buffers == count &&
318 memcmp(isurf->attachments, attachments, att_size) == 0) {
319 num = isurf->num_buffers;
322 memcpy(isurf->attachments, attachments, att_size);
324 while (count-- > 0) {
325 unsigned int att = *attachments++;
326 unsigned int format = (has_format) ? *attachments++ : 0;
327 unsigned int cpp = (format) ? format / 8 : isurf->native_buffer.cpp;
328 __DRIbuffer *buf = NULL;
332 for (reuse = 0; reuse < isurf->num_buffers; reuse++) {
333 if (isurf->buffers[reuse].attachment == att) {
334 if (isurf->buffers[reuse].cpp == cpp &&
335 isurf->handles[reuse])
336 buf = &isurf->buffers[reuse];
342 LOGD("%s buffer %d: att %d cpp %d",
343 (buf) ? "reuse" : "create", num, att, cpp);
346 buffers[num] = isurf->buffers[reuse];
347 handles[num] = isurf->handles[reuse];
348 isurf->handles[reuse] = 0;
352 (intel->enable_tiling) ? I915_TILING_X : I915_TILING_NONE;
354 buffers[num].attachment = att;
356 if (isurf->type == INTEL_SURFACE_TYPE_IMAGE &&
357 att == __DRI_BUFFER_FRONT_LEFT) {
358 buffers[num] = isurf->native_buffer;
359 buffers[num].attachment = att;
362 buffers[num].attachment = att;
363 handles[num] = create_buffer(backend, &buffers[num],
365 isurf->native_height,
373 /* delete old buffers that are not re-used */
374 delete_buffers(backend, surf);
376 memcpy(isurf->buffers, buffers, sizeof(buffers[0]) * num);
377 memcpy(isurf->handles, handles, sizeof(handles[0]) * num);
378 isurf->num_buffers = num;
382 *width = isurf->native_width;
383 *height = isurf->native_height;
385 return isurf->buffers;
389 update_native_buffer(struct droid_surface *surf)
391 struct droid_surface_intel *isurf = lookup_surface(surf);
392 unsigned int name, cpp, pitch, width, height;
394 switch (isurf->type) {
395 case INTEL_SURFACE_TYPE_WINDOW:
396 /* oem[0] always point to the buffer that a client is drawing to */
397 name = isurf->native.win->oem[0];
398 cpp = ui_bytes_per_pixel(isurf->native.win->format);
399 pitch = isurf->native.win->stride * cpp;
400 width = isurf->native.win->width;
401 height = isurf->native.win->height;
403 case INTEL_SURFACE_TYPE_IMAGE:
404 name = isurf->native.pix->reserved;
405 cpp = ui_bytes_per_pixel(isurf->native.pix->format);
406 pitch = isurf->native.pix->stride * cpp;
407 width = isurf->native.pix->width;
408 height = isurf->native.pix->height;
411 name = cpp = pitch = width = height = 0;
415 isurf->native_buffer.attachment = __DRI_BUFFER_FRONT_LEFT;
416 isurf->native_buffer.name = name;
417 isurf->native_buffer.cpp = cpp;
418 isurf->native_buffer.pitch = pitch;
419 isurf->native_buffer.flags = 0;
421 isurf->native_width = width;
422 isurf->native_height = height;
424 isurf->native_changed = 1;
427 static struct droid_surface *
428 intel_create_window_surface(struct droid_backend *backend,
430 NativeWindowType win)
432 struct droid_surface_intel *isurf;
435 LOGE("invalid native window");
436 _eglError(EGL_BAD_NATIVE_WINDOW, "eglCreateWindowSurface");
440 /* TODO lift this limitation */
442 LOGE("TODO support for non-gem based window");
443 _eglError(EGL_BAD_NATIVE_WINDOW, "eglCreateWindowSurface");
447 isurf = calloc(1, sizeof(*isurf));
449 _eglError(EGL_BAD_ALLOC, "eglCreateWindowSurface");
453 isurf->type = INTEL_SURFACE_TYPE_WINDOW;
454 isurf->native.win = win;
456 surf->Width = win->width;
457 surf->Height = win->height;
458 /* always back buffer */
459 surf->RenderBuffer = EGL_BACK_BUFFER;
463 update_native_buffer((struct droid_surface *) isurf);
465 return (struct droid_surface *) isurf;
468 static struct droid_surface *
469 intel_create_image_surface(struct droid_backend *backend,
470 NativePixmapType pix, int *depth)
472 struct droid_surface_intel *isurf;
476 LOGE("invalid native pixmap");
477 _eglError(EGL_BAD_NATIVE_PIXMAP, "eglCreateImage");
481 /* TODO lift this limitation */
482 if (!pix->reserved) {
483 LOGE("TODO support for non-gem based pixmap");
484 _eglError(EGL_BAD_NATIVE_PIXMAP, "eglCreateImage");
488 cpp = ui_bytes_per_pixel(pix->format);
489 if (cpp * 8 > DROID_MAX_IMAGE_DEPTH) {
490 LOGE("pixmap of depth %d is not supported", cpp * 8);
491 _eglError(EGL_BAD_NATIVE_PIXMAP, "eglCreateImage");
495 isurf = calloc(1, sizeof(*isurf));
497 _eglError(EGL_BAD_ALLOC, "eglCreateWindowSurface");
501 isurf->type = INTEL_SURFACE_TYPE_IMAGE;
502 isurf->native.pix = pix;
504 update_native_buffer((struct droid_surface *) isurf);
509 return (struct droid_surface *) isurf;
513 intel_destroy_surface(struct droid_backend *backend, struct droid_surface *surf)
515 struct droid_surface_intel *isurf = lookup_surface(surf);
516 delete_buffers(backend, surf);
521 intel_swap_native_buffers(struct droid_backend *backend,
522 struct droid_surface *surf)
524 struct droid_surface_intel *isurf = lookup_surface(surf);
526 if (isurf->type == INTEL_SURFACE_TYPE_WINDOW) {
529 flags = isurf->native.win->swapBuffers(isurf->native.win);
530 if (flags & EGL_NATIVES_FLAG_SIZE_CHANGED) {
531 update_native_buffer(surf);
533 /* oem[0] is changed after buffer swap */
534 isurf->native_buffer.name = isurf->native.win->oem[0];
540 intel_initialize(struct droid_backend *backend, int *fd, int *screen_number)
542 struct droid_backend_intel *intel = lookup_backend(backend);
546 err = ioctl(intel->fd, DRM_IOCTL_GET_MAGIC, &auth);
548 err = ui_auth_gpu(auth.magic);
551 LOGE("failed to authenticate");
558 *screen_number = intel->screen_number;
564 intel_destroy(struct droid_backend *backend)
566 struct droid_backend_intel *intel = lookup_backend(backend);
571 struct droid_backend *
572 droid_backend_create_intel(const char *dev)
574 struct droid_backend_intel *intel;
576 intel = calloc(1, sizeof(*intel));
580 intel->fd = open(dev, O_RDWR);
582 LOGE("failed to open %s", dev);
587 intel->screen_number = 0;
589 /* XXX query using I915_GETPARAM + PARAM_CHIPSET_ID */
590 intel->generation = INTEL_GEN_3;
592 intel->pitch_align = 64;
593 intel->enable_tiling = 1;
595 intel->base.driver_name = "i915";
596 intel->base.initialize = intel_initialize;
597 intel->base.destroy = intel_destroy;
599 intel->base.get_native_buffer = intel_get_native_buffer;
600 intel->base.get_surface_buffers = intel_get_surface_buffers;
602 intel->base.create_window_surface = intel_create_window_surface;
603 intel->base.create_image_surface = intel_create_image_surface;
604 intel->base.destroy_surface = intel_destroy_surface;
605 intel->base.swap_native_buffers = intel_swap_native_buffers;