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/*
* Copyright (C) 2016 Christian Gmeiner <christian.gmeiner@gmail.com>
*
* 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:
* Christian Gmeiner <christian.gmeiner@gmail.com>
*/
#include "renderonly/renderonly.h"
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <xf86drm.h>
#include "state_tracker/drm_driver.h"
#include "pipe/p_screen.h"
#include "util/u_inlines.h"
#include "util/u_memory.h"
struct renderonly *
renderonly_dup(const struct renderonly *ro)
{
struct renderonly *copy;
copy = CALLOC_STRUCT(renderonly);
if (!copy)
return NULL;
memcpy(copy, ro, sizeof(*ro));
return copy;
}
struct renderonly_scanout *
renderonly_scanout_for_prime(struct pipe_resource *rsc, struct renderonly *ro)
{
struct renderonly_scanout *scanout;
scanout = CALLOC_STRUCT(renderonly_scanout);
if (!scanout)
return NULL;
scanout->prime = rsc;
return scanout;
}
void
renderonly_scanout_destroy(struct renderonly_scanout *scanout,
struct renderonly *ro)
{
struct drm_mode_destroy_dumb destroy_dumb = { };
pipe_resource_reference(&scanout->prime, NULL);
if (ro->kms_fd != -1) {
destroy_dumb.handle = scanout->handle;
drmIoctl(ro->kms_fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_dumb);
}
FREE(scanout);
}
struct renderonly_scanout *
renderonly_create_kms_dumb_buffer_for_resource(struct pipe_resource *rsc,
struct renderonly *ro)
{
struct pipe_screen *screen = rsc->screen;
struct renderonly_scanout *scanout;
struct winsys_handle handle;
int prime_fd, err;
struct drm_mode_create_dumb create_dumb = {
.width = rsc->width0,
.height = rsc->height0,
.bpp = 32,
};
struct drm_mode_destroy_dumb destroy_dumb = { };
scanout = CALLOC_STRUCT(renderonly_scanout);
if (!scanout)
return NULL;
/* create dumb buffer at scanout GPU */
err = drmIoctl(ro->kms_fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_dumb);
if (err < 0) {
fprintf(stderr, "DRM_IOCTL_MODE_CREATE_DUMB failed: %s\n",
strerror(errno));
goto free_scanout;
}
scanout->handle = create_dumb.handle;
scanout->stride = create_dumb.pitch;
/* export dumb buffer */
err = drmPrimeHandleToFD(ro->kms_fd, create_dumb.handle, O_CLOEXEC,
&prime_fd);
if (err < 0) {
fprintf(stderr, "failed to export dumb buffer: %s\n", strerror(errno));
goto free_dumb;
}
/* import dumb buffer */
memset(&handle, 0, sizeof(handle));
handle.type = DRM_API_HANDLE_TYPE_FD;
handle.handle = prime_fd;
handle.stride = create_dumb.pitch;
scanout->prime = screen->resource_from_handle(screen, rsc,
&handle, PIPE_HANDLE_USAGE_READ_WRITE);
close(prime_fd);
if (!scanout->prime) {
fprintf(stderr, "failed to create resource_from_handle: %s\n", strerror(errno));
goto free_dumb;
}
return scanout;
free_dumb:
destroy_dumb.handle = scanout->handle;
drmIoctl(ro->kms_fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_dumb);
free_scanout:
FREE(scanout);
return NULL;
}
struct renderonly_scanout *
renderonly_create_gpu_import_for_resource(struct pipe_resource *rsc,
struct renderonly *ro)
{
struct pipe_screen *screen = rsc->screen;
struct renderonly_scanout *scanout;
boolean status;
int fd, err;
struct winsys_handle handle = {
.type = DRM_API_HANDLE_TYPE_FD
};
scanout = CALLOC_STRUCT(renderonly_scanout);
if (!scanout)
return NULL;
status = screen->resource_get_handle(screen, NULL, rsc, &handle,
PIPE_HANDLE_USAGE_READ_WRITE);
if (!status)
goto free_scanout;
scanout->stride = handle.stride;
fd = handle.handle;
err = drmPrimeFDToHandle(ro->kms_fd, fd, &scanout->handle);
close(fd);
if (err < 0) {
fprintf(stderr, "drmPrimeFDToHandle() failed: %s\n", strerror(errno));
goto free_scanout;
}
return scanout;
free_scanout:
FREE(scanout);
return NULL;
}
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