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fuchsia / third_party / mesa / 5105b946b66be34ce1368b53ec8b236e471d5140 / . / src / gbm / backends / dri / gbm_dri.c
blob: 1b2cc4ce76533ebf7461b98d76374b218f2a26fa [file] [log] [blame]
/*
* Copyright © 2011 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Authors:
* Benjamin Franzke <benjaminfranzke@googlemail.com>
*/
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <errno.h>
#include <limits.h>
#include <assert.h>
#include <sys/types.h>
#include <unistd.h>
#include <dlfcn.h>
#include <xf86drm.h>
#include <drm_fourcc.h>
#include <GL/gl.h> /* dri_interface needs GL types */
#include <GL/internal/dri_interface.h>
#include "gbm_driint.h"
#include "gbmint.h"
#include "loader.h"
#include "util/macros.h"
/* For importing wl_buffer */
#if HAVE_WAYLAND_PLATFORM
#include "../../../egl/wayland/wayland-drm/wayland-drm.h"
#endif
#ifndef DRM_FORMAT_MOD_INVALID
#define DRM_FORMAT_MOD_INVALID ((1ULL<<56) - 1)
#endif
#ifndef DRM_FORMAT_MOD_LINEAR
#define DRM_FORMAT_MOD_LINEAR 0
#endif
static __DRIimage *
dri_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
{
struct gbm_dri_device *dri = data;
if (dri->lookup_image == NULL)
return NULL;
return dri->lookup_image(screen, image, dri->lookup_user_data);
}
static __DRIbuffer *
dri_get_buffers(__DRIdrawable * driDrawable,
int *width, int *height,
unsigned int *attachments, int count,
int *out_count, void *data)
{
struct gbm_dri_surface *surf = data;
struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm);
if (dri->get_buffers == NULL)
return NULL;
return dri->get_buffers(driDrawable, width, height, attachments,
count, out_count, surf->dri_private);
}
static void
dri_flush_front_buffer(__DRIdrawable * driDrawable, void *data)
{
struct gbm_dri_surface *surf = data;
struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm);
if (dri->flush_front_buffer != NULL)
dri->flush_front_buffer(driDrawable, surf->dri_private);
}
static __DRIbuffer *
dri_get_buffers_with_format(__DRIdrawable * driDrawable,
int *width, int *height,
unsigned int *attachments, int count,
int *out_count, void *data)
{
struct gbm_dri_surface *surf = data;
struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm);
if (dri->get_buffers_with_format == NULL)
return NULL;
return
dri->get_buffers_with_format(driDrawable, width, height, attachments,
count, out_count, surf->dri_private);
}
static int
image_get_buffers(__DRIdrawable *driDrawable,
unsigned int format,
uint32_t *stamp,
void *loaderPrivate,
uint32_t buffer_mask,
struct __DRIimageList *buffers)
{
struct gbm_dri_surface *surf = loaderPrivate;
struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm);
if (dri->image_get_buffers == NULL)
return 0;
return dri->image_get_buffers(driDrawable, format, stamp,
surf->dri_private, buffer_mask, buffers);
}
static void
swrast_get_drawable_info(__DRIdrawable *driDrawable,
int *x,
int *y,
int *width,
int *height,
void *loaderPrivate)
{
struct gbm_dri_surface *surf = loaderPrivate;
*x = 0;
*y = 0;
*width = surf->base.width;
*height = surf->base.height;
}
static void
swrast_put_image2(__DRIdrawable *driDrawable,
int op,
int x,
int y,
int width,
int height,
int stride,
char *data,
void *loaderPrivate)
{
struct gbm_dri_surface *surf = loaderPrivate;
struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm);
dri->swrast_put_image2(driDrawable,
op, x, y,
width, height, stride,
data, surf->dri_private);
}
static void
swrast_put_image(__DRIdrawable *driDrawable,
int op,
int x,
int y,
int width,
int height,
char *data,
void *loaderPrivate)
{
return swrast_put_image2(driDrawable, op, x, y, width, height,
width * 4, data, loaderPrivate);
}
static void
swrast_get_image(__DRIdrawable *driDrawable,
int x,
int y,
int width,
int height,
char *data,
void *loaderPrivate)
{
struct gbm_dri_surface *surf = loaderPrivate;
struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm);
dri->swrast_get_image(driDrawable,
x, y,
width, height,
data, surf->dri_private);
}
static const __DRIuseInvalidateExtension use_invalidate = {
.base = { __DRI_USE_INVALIDATE, 1 }
};
static const __DRIimageLookupExtension image_lookup_extension = {
.base = { __DRI_IMAGE_LOOKUP, 1 },
.lookupEGLImage = dri_lookup_egl_image
};
static const __DRIdri2LoaderExtension dri2_loader_extension = {
.base = { __DRI_DRI2_LOADER, 3 },
.getBuffers = dri_get_buffers,
.flushFrontBuffer = dri_flush_front_buffer,
.getBuffersWithFormat = dri_get_buffers_with_format,
};
static const __DRIimageLoaderExtension image_loader_extension = {
.base = { __DRI_IMAGE_LOADER, 1 },
.getBuffers = image_get_buffers,
.flushFrontBuffer = dri_flush_front_buffer,
};
static const __DRIswrastLoaderExtension swrast_loader_extension = {
.base = { __DRI_SWRAST_LOADER, 2 },
.getDrawableInfo = swrast_get_drawable_info,
.putImage = swrast_put_image,
.getImage = swrast_get_image,
.putImage2 = swrast_put_image2
};
static const __DRIextension *gbm_dri_screen_extensions[] = {
&image_lookup_extension.base,
&use_invalidate.base,
&dri2_loader_extension.base,
&image_loader_extension.base,
&swrast_loader_extension.base,
NULL,
};
struct dri_extension_match {
const char *name;
int version;
int offset;
int optional;
};
static struct dri_extension_match dri_core_extensions[] = {
{ __DRI2_FLUSH, 1, offsetof(struct gbm_dri_device, flush) },
{ __DRI_IMAGE, 1, offsetof(struct gbm_dri_device, image) },
{ __DRI2_FENCE, 1, offsetof(struct gbm_dri_device, fence), 1 },
{ NULL, 0, 0 }
};
static struct dri_extension_match gbm_dri_device_extensions[] = {
{ __DRI_CORE, 1, offsetof(struct gbm_dri_device, core) },
{ __DRI_DRI2, 1, offsetof(struct gbm_dri_device, dri2) },
{ NULL, 0, 0 }
};
static struct dri_extension_match gbm_swrast_device_extensions[] = {
{ __DRI_CORE, 1, offsetof(struct gbm_dri_device, core), },
{ __DRI_SWRAST, 1, offsetof(struct gbm_dri_device, swrast) },
{ NULL, 0, 0 }
};
static int
dri_bind_extensions(struct gbm_dri_device *dri,
struct dri_extension_match *matches,
const __DRIextension **extensions)
{
int i, j, ret = 0;
void *field;
for (i = 0; extensions[i]; i++) {
for (j = 0; matches[j].name; j++) {
if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
extensions[i]->version >= matches[j].version) {
field = ((char *) dri + matches[j].offset);
*(const __DRIextension **) field = extensions[i];
}
}
}
for (j = 0; matches[j].name; j++) {
field = ((char *) dri + matches[j].offset);
if ((*(const __DRIextension **) field == NULL) && !matches[j].optional) {
ret = -1;
}
}
return ret;
}
static const __DRIextension **
dri_open_driver(struct gbm_dri_device *dri)
{
const __DRIextension **extensions = NULL;
char path[PATH_MAX], *search_paths, *p, *next, *end;
char *get_extensions_name;
search_paths = NULL;
/* don't allow setuid apps to use LIBGL_DRIVERS_PATH or GBM_DRIVERS_PATH */
if (geteuid() == getuid()) {
/* Read GBM_DRIVERS_PATH first for compatibility, but LIBGL_DRIVERS_PATH
* is recommended over GBM_DRIVERS_PATH.
*/
search_paths = getenv("GBM_DRIVERS_PATH");
/* Read LIBGL_DRIVERS_PATH if GBM_DRIVERS_PATH was not set.
* LIBGL_DRIVERS_PATH is recommended over GBM_DRIVERS_PATH.
*/
if (search_paths == NULL) {
search_paths = getenv("LIBGL_DRIVERS_PATH");
}
}
if (search_paths == NULL)
search_paths = DEFAULT_DRIVER_DIR;
/* Temporarily work around dri driver libs that need symbols in libglapi
* but don't automatically link it in.
*/
/* XXX: Library name differs on per platforms basis. Update this as
* osx/cygwin/windows/bsd gets support for GBM..
*/
dlopen("libglapi.so.0", RTLD_LAZY | RTLD_GLOBAL);
dri->driver = NULL;
end = search_paths + strlen(search_paths);
for (p = search_paths; p < end && dri->driver == NULL; p = next + 1) {
int len;
next = strchr(p, ':');
if (next == NULL)
next = end;
len = next - p;
#if GLX_USE_TLS
snprintf(path, sizeof path,
"%.*s/tls/%s_dri.so", len, p, dri->driver_name);
dri->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
#endif
if (dri->driver == NULL) {
snprintf(path, sizeof path,
"%.*s/%s_dri.so", len, p, dri->driver_name);
dri->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
}
/* not need continue to loop all paths once the driver is found */
if (dri->driver != NULL)
break;
}
if (dri->driver == NULL) {
fprintf(stderr, "gbm: failed to open any driver (search paths %s)\n",
search_paths);
fprintf(stderr, "gbm: Last dlopen error: %s\n", dlerror());
return NULL;
}
get_extensions_name = loader_get_extensions_name(dri->driver_name);
if (get_extensions_name) {
const __DRIextension **(*get_extensions)(void);
get_extensions = dlsym(dri->driver, get_extensions_name);
free(get_extensions_name);
if (get_extensions)
extensions = get_extensions();
}
if (!extensions)
extensions = dlsym(dri->driver, __DRI_DRIVER_EXTENSIONS);
if (extensions == NULL) {
fprintf(stderr, "gbm: driver exports no extensions (%s)", dlerror());
dlclose(dri->driver);
}
return extensions;
}
static int
dri_load_driver(struct gbm_dri_device *dri)
{
const __DRIextension **extensions;
extensions = dri_open_driver(dri);
if (!extensions)
return -1;
if (dri_bind_extensions(dri, gbm_dri_device_extensions, extensions) < 0) {
dlclose(dri->driver);
fprintf(stderr, "failed to bind extensions\n");
return -1;
}
dri->driver_extensions = extensions;
return 0;
}
static int
dri_load_driver_swrast(struct gbm_dri_device *dri)
{
const __DRIextension **extensions;
extensions = dri_open_driver(dri);
if (!extensions)
return -1;
if (dri_bind_extensions(dri, gbm_swrast_device_extensions, extensions) < 0) {
dlclose(dri->driver);
fprintf(stderr, "failed to bind extensions\n");
return -1;
}
dri->driver_extensions = extensions;
return 0;
}
static int
dri_screen_create_dri2(struct gbm_dri_device *dri, char *driver_name)
{
const __DRIextension **extensions;
int ret = 0;
dri->driver_name = driver_name;
if (dri->driver_name == NULL)
return -1;
ret = dri_load_driver(dri);
if (ret) {
fprintf(stderr, "failed to load driver: %s\n", dri->driver_name);
return ret;
};
dri->loader_extensions = gbm_dri_screen_extensions;
if (dri->dri2 == NULL)
return -1;
if (dri->dri2->base.version >= 4) {
dri->screen = dri->dri2->createNewScreen2(0, dri->base.fd,
dri->loader_extensions,
dri->driver_extensions,
&dri->driver_configs, dri);
} else {
dri->screen = dri->dri2->createNewScreen(0, dri->base.fd,
dri->loader_extensions,
&dri->driver_configs, dri);
}
if (dri->screen == NULL)
return -1;
extensions = dri->core->getExtensions(dri->screen);
if (dri_bind_extensions(dri, dri_core_extensions, extensions) < 0) {
ret = -1;
goto free_screen;
}
dri->lookup_image = NULL;
dri->lookup_user_data = NULL;
return 0;
free_screen:
dri->core->destroyScreen(dri->screen);
return ret;
}
static int
dri_screen_create_swrast(struct gbm_dri_device *dri)
{
int ret;
dri->driver_name = strdup("swrast");
if (dri->driver_name == NULL)
return -1;
ret = dri_load_driver_swrast(dri);
if (ret) {
fprintf(stderr, "failed to load swrast driver\n");
return ret;
}
dri->loader_extensions = gbm_dri_screen_extensions;
if (dri->swrast == NULL)
return -1;
if (dri->swrast->base.version >= 4) {
dri->screen = dri->swrast->createNewScreen2(0, dri->loader_extensions,
dri->driver_extensions,
&dri->driver_configs, dri);
} else {
dri->screen = dri->swrast->createNewScreen(0, dri->loader_extensions,
&dri->driver_configs, dri);
}
if (dri->screen == NULL)
return -1;
dri->lookup_image = NULL;
dri->lookup_user_data = NULL;
return 0;
}
static int
dri_screen_create(struct gbm_dri_device *dri)
{
char *driver_name;
driver_name = loader_get_driver_for_fd(dri->base.fd);
if (!driver_name)
return -1;
return dri_screen_create_dri2(dri, driver_name);
}
static int
dri_screen_create_sw(struct gbm_dri_device *dri)
{
char *driver_name;
int ret;
driver_name = strdup("kms_swrast");
if (!driver_name)
return -errno;
ret = dri_screen_create_dri2(dri, driver_name);
if (ret == 0)
return ret;
return dri_screen_create_swrast(dri);
}
static const struct {
uint32_t gbm_format;
int dri_image_format;
} gbm_to_dri_image_formats[] = {
{ GBM_FORMAT_R8, __DRI_IMAGE_FORMAT_R8 },
{ GBM_FORMAT_GR88, __DRI_IMAGE_FORMAT_GR88 },
{ GBM_FORMAT_RGB565, __DRI_IMAGE_FORMAT_RGB565 },
{ GBM_FORMAT_XRGB8888, __DRI_IMAGE_FORMAT_XRGB8888 },
{ GBM_FORMAT_ARGB8888, __DRI_IMAGE_FORMAT_ARGB8888 },
{ GBM_FORMAT_XBGR8888, __DRI_IMAGE_FORMAT_XBGR8888 },
{ GBM_FORMAT_ABGR8888, __DRI_IMAGE_FORMAT_ABGR8888 },
{ GBM_FORMAT_XRGB2101010, __DRI_IMAGE_FORMAT_XRGB2101010 },
{ GBM_FORMAT_ARGB2101010, __DRI_IMAGE_FORMAT_ARGB2101010 },
};
/* The two GBM_BO_FORMAT_[XA]RGB8888 formats alias the GBM_FORMAT_*
* formats of the same name. We want to accept them whenever someone
* has a GBM format, but never return them to the user. */
static int
gbm_format_canonicalize(uint32_t gbm_format)
{
switch (gbm_format) {
case GBM_BO_FORMAT_XRGB8888:
return GBM_FORMAT_XRGB8888;
case GBM_BO_FORMAT_ARGB8888:
return GBM_FORMAT_ARGB8888;
default:
return gbm_format;
}
}
static int
gbm_format_to_dri_format(uint32_t gbm_format)
{
int i;
gbm_format = gbm_format_canonicalize(gbm_format);
for (i = 0; i < ARRAY_SIZE(gbm_to_dri_image_formats); i++) {
if (gbm_to_dri_image_formats[i].gbm_format == gbm_format)
return gbm_to_dri_image_formats[i].dri_image_format;
}
return 0;
}
static uint32_t
gbm_dri_to_gbm_format(int dri_format)
{
int i;
for (i = 0; i < ARRAY_SIZE(gbm_to_dri_image_formats); i++) {
if (gbm_to_dri_image_formats[i].dri_image_format == dri_format)
return gbm_to_dri_image_formats[i].gbm_format;
}
return 0;
}
static int
gbm_dri_is_format_supported(struct gbm_device *gbm,
uint32_t format,
uint32_t usage)
{
struct gbm_dri_device *dri = gbm_dri_device(gbm);
int count;
if ((usage & GBM_BO_USE_CURSOR) && (usage & GBM_BO_USE_RENDERING))
return 0;
format = gbm_format_canonicalize(format);
if (gbm_format_to_dri_format(format) == 0)
return 0;
/* If there is no query, fall back to the small table which was originally
* here. */
if (dri->image->base.version <= 15 || !dri->image->queryDmaBufModifiers) {
switch (format) {
case GBM_FORMAT_XRGB8888:
case GBM_FORMAT_ARGB8888:
case GBM_FORMAT_XBGR8888:
return 1;
default:
return 0;
}
}
/* Check if the driver returns any modifiers for this format; since linear
* is counted as a modifier, we will have at least one modifier for any
* supported format. */
if (!dri->image->queryDmaBufModifiers(dri->screen, format, 0, NULL, NULL,
&count))
return 0;
return (count > 0);
}
static int
gbm_dri_bo_write(struct gbm_bo *_bo, const void *buf, size_t count)
{
struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
if (bo->image != NULL) {
errno = EINVAL;
return -1;
}
memcpy(bo->map, buf, count);
return 0;
}
static int
gbm_dri_bo_get_fd(struct gbm_bo *_bo)
{
struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
int fd;
if (bo->image == NULL)
return -1;
if (!dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_FD, &fd))
return -1;
return fd;
}
static int
get_number_planes(struct gbm_dri_device *dri, __DRIimage *image)
{
int num_planes = 0;
/* Dumb buffers are single-plane only. */
if (!image)
return 1;
dri->image->queryImage(image, __DRI_IMAGE_ATTRIB_NUM_PLANES, &num_planes);
if (num_planes <= 0)
num_planes = 1;
return num_planes;
}
static int
gbm_dri_bo_get_planes(struct gbm_bo *_bo)
{
struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
return get_number_planes(dri, bo->image);
}
static union gbm_bo_handle
gbm_dri_bo_get_handle_for_plane(struct gbm_bo *_bo, int plane)
{
struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
union gbm_bo_handle ret;
ret.s32 = -1;
if (!dri->image || dri->image->base.version < 13 || !dri->image->fromPlanar) {
errno = ENOSYS;
return ret;
}
if (plane >= get_number_planes(dri, bo->image)) {
errno = EINVAL;
return ret;
}
/* dumb BOs can only utilize non-planar formats */
if (!bo->image) {
assert(plane == 0);
ret.s32 = bo->handle;
return ret;
}
__DRIimage *image = dri->image->fromPlanar(bo->image, plane, NULL);
if (image) {
dri->image->queryImage(image, __DRI_IMAGE_ATTRIB_HANDLE, &ret.s32);
dri->image->destroyImage(image);
} else {
assert(plane == 0);
dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_HANDLE, &ret.s32);
}
return ret;
}
static uint32_t
gbm_dri_bo_get_stride(struct gbm_bo *_bo, int plane)
{
struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
__DRIimage *image;
int stride = 0;
if (!dri->image || dri->image->base.version < 11 || !dri->image->fromPlanar) {
/* Preserve legacy behavior if plane is 0 */
if (plane == 0)
return _bo->stride;
errno = ENOSYS;
return 0;
}
if (plane >= get_number_planes(dri, bo->image)) {
errno = EINVAL;
return 0;
}
if (bo->image == NULL) {
assert(plane == 0);
return _bo->stride;
}
image = dri->image->fromPlanar(bo->image, plane, NULL);
if (image) {
dri->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
dri->image->destroyImage(image);
} else {
assert(plane == 0);
dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
}
return (uint32_t)stride;
}
static uint32_t
gbm_dri_bo_get_offset(struct gbm_bo *_bo, int plane)
{
struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
int offset = 0;
/* These error cases do not actually return an error code, as the user
* will also fail to obtain the handle/FD from the BO. In that case, the
* offset is irrelevant, as they have no buffer to offset into, so
* returning 0 is harmless.
*/
if (!dri->image || dri->image->base.version < 13 || !dri->image->fromPlanar)
return 0;
if (plane >= get_number_planes(dri, bo->image))
return 0;
/* Dumb images have no offset */
if (bo->image == NULL) {
assert(plane == 0);
return 0;
}
__DRIimage *image = dri->image->fromPlanar(bo->image, plane, NULL);
if (image) {
dri->image->queryImage(image, __DRI_IMAGE_ATTRIB_OFFSET, &offset);
dri->image->destroyImage(image);
} else {
dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_OFFSET, &offset);
}
return (uint32_t)offset;
}
static uint64_t
gbm_dri_bo_get_modifier(struct gbm_bo *_bo)
{
struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
if (!dri->image || dri->image->base.version < 14) {
errno = ENOSYS;
return DRM_FORMAT_MOD_INVALID;
}
/* Dumb buffers have no modifiers */
if (!bo->image)
return DRM_FORMAT_MOD_LINEAR;
uint64_t ret = 0;
int mod;
if (!dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_MODIFIER_UPPER,
&mod))
return DRM_FORMAT_MOD_INVALID;
ret = (uint64_t)mod << 32;
if (!dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_MODIFIER_LOWER,
&mod))
return DRM_FORMAT_MOD_INVALID;
ret |= (uint64_t)(mod & 0xffffffff);
return ret;
}
static void
gbm_dri_bo_destroy(struct gbm_bo *_bo)
{
struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
struct drm_mode_destroy_dumb arg;
if (bo->image != NULL) {
dri->image->destroyImage(bo->image);
} else {
gbm_dri_bo_unmap_dumb(bo);
memset(&arg, 0, sizeof(arg));
arg.handle = bo->handle;
drmIoctl(dri->base.fd, DRM_IOCTL_MODE_DESTROY_DUMB, &arg);
}
free(bo);
}
static struct gbm_bo *
gbm_dri_bo_import(struct gbm_device *gbm,
uint32_t type, void *buffer, uint32_t usage)
{
struct gbm_dri_device *dri = gbm_dri_device(gbm);
struct gbm_dri_bo *bo;
__DRIimage *image;
unsigned dri_use = 0;
int gbm_format;
/* Required for query image WIDTH & HEIGHT */
if (dri->image == NULL || dri->image->base.version < 4) {
errno = ENOSYS;
return NULL;
}
switch (type) {
#if HAVE_WAYLAND_PLATFORM
case GBM_BO_IMPORT_WL_BUFFER:
{
struct wl_drm_buffer *wb;
if (!dri->wl_drm) {
errno = EINVAL;
return NULL;
}
wb = wayland_drm_buffer_get(dri->wl_drm, (struct wl_resource *) buffer);
if (!wb) {
errno = EINVAL;
return NULL;
}
image = dri->image->dupImage(wb->driver_buffer, NULL);
/* GBM_FORMAT_* is identical to WL_DRM_FORMAT_*, so no conversion
* required. */
gbm_format = wb->format;
break;
}
#endif
case GBM_BO_IMPORT_EGL_IMAGE:
{
int dri_format;
if (dri->lookup_image == NULL) {
errno = EINVAL;
return NULL;
}
image = dri->lookup_image(dri->screen, buffer, dri->lookup_user_data);
image = dri->image->dupImage(image, NULL);
dri->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &dri_format);
gbm_format = gbm_dri_to_gbm_format(dri_format);
if (gbm_format == 0) {
errno = EINVAL;
dri->image->destroyImage(image);
return NULL;
}
break;
}
case GBM_BO_IMPORT_FD:
{
struct gbm_import_fd_data *fd_data = buffer;
int stride = fd_data->stride, offset = 0;
int fourcc;
/* GBM's GBM_FORMAT_* tokens are a strict superset of the DRI FourCC
* tokens accepted by createImageFromFds, except for not supporting
* the sARGB format. */
fourcc = gbm_format_canonicalize(fd_data->format);
image = dri->image->createImageFromFds(dri->screen,
fd_data->width,
fd_data->height,
fourcc,
&fd_data->fd, 1,
&stride, &offset,
NULL);
if (image == NULL) {
errno = EINVAL;
return NULL;
}
gbm_format = fd_data->format;
break;
}
case GBM_BO_IMPORT_FD_MODIFIER:
{
struct gbm_import_fd_modifier_data *fd_data = buffer;
unsigned int error;
int fourcc;
/* Import with modifier requires createImageFromDmaBufs2 */
if (dri->image == NULL || dri->image->base.version < 15 ||
dri->image->createImageFromDmaBufs2 == NULL) {
errno = ENOSYS;
return NULL;
}
/* GBM's GBM_FORMAT_* tokens are a strict superset of the DRI FourCC
* tokens accepted by createImageFromDmaBufs2, except for not supporting
* the sARGB format. */
fourcc = gbm_format_canonicalize(fd_data->format);
image = dri->image->createImageFromDmaBufs2(dri->screen, fd_data->width,
fd_data->height, fourcc,
fd_data->modifier,
fd_data->fds,
fd_data->num_fds,
fd_data->strides,
fd_data->offsets,
0, 0, 0, 0,
&error, NULL);
if (image == NULL) {
errno = ENOSYS;
return NULL;
}
gbm_format = fourcc;
break;
}
default:
errno = ENOSYS;
return NULL;
}
bo = calloc(1, sizeof *bo);
if (bo == NULL) {
dri->image->destroyImage(image);
return NULL;
}
bo->image = image;
if (usage & GBM_BO_USE_SCANOUT)
dri_use |= __DRI_IMAGE_USE_SCANOUT;
if (usage & GBM_BO_USE_CURSOR)
dri_use |= __DRI_IMAGE_USE_CURSOR;
if (dri->image->base.version >= 2 &&
!dri->image->validateUsage(bo->image, dri_use)) {
errno = EINVAL;
dri->image->destroyImage(bo->image);
free(bo);
return NULL;
}
bo->base.gbm = gbm;
bo->base.format = gbm_format;
dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_WIDTH,
(int*)&bo->base.width);
dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_HEIGHT,
(int*)&bo->base.height);
dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_STRIDE,
(int*)&bo->base.stride);
dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_HANDLE,
&bo->base.handle.s32);
return &bo->base;
}
static struct gbm_bo *
create_dumb(struct gbm_device *gbm,
uint32_t width, uint32_t height,
uint32_t format, uint32_t usage)
{
struct gbm_dri_device *dri = gbm_dri_device(gbm);
struct drm_mode_create_dumb create_arg;
struct gbm_dri_bo *bo;
struct drm_mode_destroy_dumb destroy_arg;
int ret;
int is_cursor, is_scanout;
is_cursor = (usage & GBM_BO_USE_CURSOR) != 0 &&
format == GBM_FORMAT_ARGB8888;
is_scanout = (usage & GBM_BO_USE_SCANOUT) != 0 &&
(format == GBM_FORMAT_XRGB8888 || format == GBM_FORMAT_XBGR8888);
if (!is_cursor && !is_scanout) {
errno = EINVAL;
return NULL;
}
bo = calloc(1, sizeof *bo);
if (bo == NULL)
return NULL;
memset(&create_arg, 0, sizeof(create_arg));
create_arg.bpp = 32;
create_arg.width = width;
create_arg.height = height;
ret = drmIoctl(dri->base.fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_arg);
if (ret)
goto free_bo;
bo->base.gbm = gbm;
bo->base.width = width;
bo->base.height = height;
bo->base.stride = create_arg.pitch;
bo->base.format = format;
bo->base.handle.u32 = create_arg.handle;
bo->handle = create_arg.handle;
bo->size = create_arg.size;
if (gbm_dri_bo_map_dumb(bo) == NULL)
goto destroy_dumb;
return &bo->base;
destroy_dumb:
memset(&destroy_arg, 0, sizeof destroy_arg);
destroy_arg.handle = create_arg.handle;
drmIoctl(dri->base.fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_arg);
free_bo:
free(bo);
return NULL;
}
static struct gbm_bo *
gbm_dri_bo_create(struct gbm_device *gbm,
uint32_t width, uint32_t height,
uint32_t format, uint32_t usage,
const uint64_t *modifiers,
const unsigned int count)
{
struct gbm_dri_device *dri = gbm_dri_device(gbm);
struct gbm_dri_bo *bo;
int dri_format;
unsigned dri_use = 0;
/* Callers of this may specify a modifier, or a dri usage, but not both. The
* newer modifier interface deprecates the older usage flags.
*/
assert(!(usage && count));
format = gbm_format_canonicalize(format);
if (usage & GBM_BO_USE_WRITE || dri->image == NULL)
return create_dumb(gbm, width, height, format, usage);
bo = calloc(1, sizeof *bo);
if (bo == NULL)
return NULL;
bo->base.gbm = gbm;
bo->base.width = width;
bo->base.height = height;
bo->base.format = format;
dri_format = gbm_format_to_dri_format(format);
if (dri_format == 0) {
errno = EINVAL;
goto failed;
}
if (usage & GBM_BO_USE_SCANOUT)
dri_use |= __DRI_IMAGE_USE_SCANOUT;
if (usage & GBM_BO_USE_CURSOR)
dri_use |= __DRI_IMAGE_USE_CURSOR;
if (usage & GBM_BO_USE_LINEAR)
dri_use |= __DRI_IMAGE_USE_LINEAR;
/* Gallium drivers requires shared in order to get the handle/stride */
dri_use |= __DRI_IMAGE_USE_SHARE;
if (modifiers) {
if (!dri->image || dri->image->base.version < 14 ||
!dri->image->createImageWithModifiers) {
fprintf(stderr, "Modifiers specified, but DRI is too old\n");
errno = ENOSYS;
goto failed;
}
/* It's acceptable to create an image with INVALID modifier in the list,
* but it cannot be on the only modifier (since it will certainly fail
* later). While we could easily catch this after modifier creation, doing
* the check here is a convenient debug check likely pointing at whatever
* interface the client is using to build its modifier list.
*/
if (count == 1 && modifiers[0] == DRM_FORMAT_MOD_INVALID) {
fprintf(stderr, "Only invalid modifier specified\n");
errno = EINVAL;
goto failed;
}
bo->image =
dri->image->createImageWithModifiers(dri->screen,
width, height,
dri_format,
modifiers, count,
bo);
if (bo->image) {
/* The client passed in a list of invalid modifiers */
assert(gbm_dri_bo_get_modifier(&bo->base) != DRM_FORMAT_MOD_INVALID);
}
} else {
bo->image = dri->image->createImage(dri->screen, width, height,
dri_format, dri_use, bo);
}
if (bo->image == NULL)
goto failed;
dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_HANDLE,
&bo->base.handle.s32);
dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_STRIDE,
(int *) &bo->base.stride);
return &bo->base;
failed:
free(bo);
return NULL;
}
static void *
gbm_dri_bo_map(struct gbm_bo *_bo,
uint32_t x, uint32_t y,
uint32_t width, uint32_t height,
uint32_t flags, uint32_t *stride, void **map_data)
{
struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
/* If it's a dumb buffer, we already have a mapping */
if (bo->map) {
*map_data = (char *)bo->map + (bo->base.stride * y) + (x * 4);
*stride = bo->base.stride;
return *map_data;
}
if (!dri->image || dri->image->base.version < 12 || !dri->image->mapImage) {
errno = ENOSYS;
return NULL;
}
mtx_lock(&dri->mutex);
if (!dri->context)
dri->context = dri->dri2->createNewContext(dri->screen, NULL,
NULL, NULL);
assert(dri->context);
mtx_unlock(&dri->mutex);
/* GBM flags and DRI flags are the same, so just pass them on */
return dri->image->mapImage(dri->context, bo->image, x, y,
width, height, flags, (int *)stride,
map_data);
}
static void
gbm_dri_bo_unmap(struct gbm_bo *_bo, void *map_data)
{
struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
/* Check if it's a dumb buffer and check the pointer is in range */
if (bo->map) {
assert(map_data >= bo->map);
assert(map_data < (bo->map + bo->size));
return;
}
if (!dri->context || !dri->image ||
dri->image->base.version < 12 || !dri->image->unmapImage)
return;
dri->image->unmapImage(dri->context, bo->image, map_data);
/*
* Not all DRI drivers use direct maps. They may queue up DMA operations
* on the mapping context. Since there is no explicit gbm flush
* mechanism, we need to flush here.
*/
if (dri->flush->base.version >= 4)
dri->flush->flush_with_flags(dri->context, NULL, __DRI2_FLUSH_CONTEXT, 0);
}
static struct gbm_surface *
gbm_dri_surface_create(struct gbm_device *gbm,
uint32_t width, uint32_t height,
uint32_t format, uint32_t flags,
const uint64_t *modifiers, const unsigned count)
{
struct gbm_dri_device *dri = gbm_dri_device(gbm);
struct gbm_dri_surface *surf;
if (modifiers &&
(!dri->image || dri->image->base.version < 14 ||
!dri->image->createImageWithModifiers)) {
errno = ENOSYS;
return NULL;
}
if (count)
assert(modifiers);
/* It's acceptable to create an image with INVALID modifier in the list,
* but it cannot be on the only modifier (since it will certainly fail
* later). While we could easily catch this after modifier creation, doing
* the check here is a convenient debug check likely pointing at whatever
* interface the client is using to build its modifier list.
*/
if (count == 1 && modifiers[0] == DRM_FORMAT_MOD_INVALID) {
fprintf(stderr, "Only invalid modifier specified\n");
errno = EINVAL;
}
surf = calloc(1, sizeof *surf);
if (surf == NULL) {
errno = ENOMEM;
return NULL;
}
surf->base.gbm = gbm;
surf->base.width = width;
surf->base.height = height;
surf->base.format = gbm_format_canonicalize(format);
surf->base.flags = flags;
if (!modifiers) {
assert(!count);
return &surf->base;
}
surf->base.modifiers = calloc(count, sizeof(*modifiers));
if (count && !surf->base.modifiers) {
errno = ENOMEM;
free(surf);
return NULL;
}
/* TODO: We are deferring validation of modifiers until the image is actually
* created. This deferred creation can fail due to a modifier-format
* mismatch. The result is the client has a surface but no object to back it.
*/
surf->base.count = count;
memcpy(surf->base.modifiers, modifiers, count * sizeof(*modifiers));
return &surf->base;
}
static void
gbm_dri_surface_destroy(struct gbm_surface *_surf)
{
struct gbm_dri_surface *surf = gbm_dri_surface(_surf);
free(surf->base.modifiers);
free(surf);
}
static void
dri_destroy(struct gbm_device *gbm)
{
struct gbm_dri_device *dri = gbm_dri_device(gbm);
unsigned i;
if (dri->context)
dri->core->destroyContext(dri->context);
dri->core->destroyScreen(dri->screen);
for (i = 0; dri->driver_configs[i]; i++)
free((__DRIconfig *) dri->driver_configs[i]);
free(dri->driver_configs);
dlclose(dri->driver);
free(dri->driver_name);
free(dri);
}
static struct gbm_device *
dri_device_create(int fd)
{
struct gbm_dri_device *dri;
int ret, force_sw;
dri = calloc(1, sizeof *dri);
if (!dri)
return NULL;
dri->base.fd = fd;
dri->base.bo_create = gbm_dri_bo_create;
dri->base.bo_import = gbm_dri_bo_import;
dri->base.bo_map = gbm_dri_bo_map;
dri->base.bo_unmap = gbm_dri_bo_unmap;
dri->base.is_format_supported = gbm_dri_is_format_supported;
dri->base.bo_write = gbm_dri_bo_write;
dri->base.bo_get_fd = gbm_dri_bo_get_fd;
dri->base.bo_get_planes = gbm_dri_bo_get_planes;
dri->base.bo_get_handle = gbm_dri_bo_get_handle_for_plane;
dri->base.bo_get_stride = gbm_dri_bo_get_stride;
dri->base.bo_get_offset = gbm_dri_bo_get_offset;
dri->base.bo_get_modifier = gbm_dri_bo_get_modifier;
dri->base.bo_destroy = gbm_dri_bo_destroy;
dri->base.destroy = dri_destroy;
dri->base.surface_create = gbm_dri_surface_create;
dri->base.surface_destroy = gbm_dri_surface_destroy;
dri->base.name = "drm";
mtx_init(&dri->mutex, mtx_plain);
force_sw = getenv("GBM_ALWAYS_SOFTWARE") != NULL;
if (!force_sw) {
ret = dri_screen_create(dri);
if (ret)
ret = dri_screen_create_sw(dri);
} else {
ret = dri_screen_create_sw(dri);
}
if (ret)
goto err_dri;
return &dri->base;
err_dri:
free(dri);
return NULL;
}
struct gbm_backend gbm_dri_backend = {
.backend_name = "dri",
.create_device = dri_device_create,
};