--- /dev/null
+/*
+ * 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 <sys/ioctl.h>
+#include <xf86drm.h>
+
+#include "state_tracker/drm_driver.h"
+#include "pipe/p_screen.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)
+{
+ 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 = ioctl(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 */
+ 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);
+
+ 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;
+ ioctl(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;
+}
+
--- /dev/null
+/*
+ * 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>
+ */
+
+#ifndef RENDERONLY_H
+#define RENDERONLY_H
+
+#include <stdint.h>
+#include "state_tracker/drm_driver.h"
+#include "pipe/p_state.h"
+
+struct renderonly_scanout {
+ uint32_t handle;
+ uint32_t stride;
+
+ struct pipe_resource *prime;
+};
+
+struct renderonly {
+ /**
+ * Create a renderonly_scanout object for scanout resource.
+ *
+ * This function creates a renderonly_scanout object based on the provided
+ * resource. The library is designed that the driver specific pipe_resource
+ * struct holds a pointer to a renderonly_scanout struct.
+ *
+ * struct driver_resource {
+ * struct pipe_resource base;
+ * struct renderonly_scanout *scanout;
+ * ...
+ * };
+ *
+ * The renderonly_scanout object exits for two reasons:
+ * - Do any special treatment for a scanout resource like importing the GPU
+ * resource into the scanout hw.
+ * - Make it easier for a gallium driver to detect if anything special needs
+ * to be done in flush_resource(..) like a resolve to linear.
+ */
+ struct renderonly_scanout *(*create_for_resource)(struct pipe_resource *rsc,
+ struct renderonly *ro);
+ int kms_fd;
+ int gpu_fd;
+};
+
+struct renderonly *
+renderonly_dup(const struct renderonly *ro);
+
+static inline struct renderonly_scanout *
+renderonly_scanout_for_resource(struct pipe_resource *rsc, struct renderonly *ro)
+{
+ return ro->create_for_resource(rsc, ro);
+}
+
+struct renderonly_scanout *
+renderonly_scanout_for_prime(struct pipe_resource *rsc, struct renderonly *ro);
+
+void
+renderonly_scanout_destroy(struct renderonly_scanout *scanout);
+
+static inline boolean
+renderonly_get_handle(struct renderonly_scanout *scanout,
+ struct winsys_handle *handle)
+{
+ if (!scanout)
+ return FALSE;
+
+ handle->handle = scanout->handle;
+ handle->stride = scanout->stride;
+
+ return TRUE;
+}
+
+/**
+ * Create a dumb buffer object for a resource at scanout hw.
+ */
+struct renderonly_scanout *
+renderonly_create_kms_dumb_buffer_for_resource(struct pipe_resource *rsc,
+ struct renderonly *ro);
+
+/**
+ * Import GPU resource into scanout hw.
+ */
+struct renderonly_scanout *
+renderonly_create_gpu_import_for_resource(struct pipe_resource *rsc,
+ struct renderonly *ro);
+
+#endif /* RENDERONLY_H_ */
projects / mesa.git / commitdiff