summaryrefslogtreecommitdiff
path: root/lib/libdrm/tegra/tegra.c
diff options
context:
space:
mode:
Diffstat (limited to 'lib/libdrm/tegra/tegra.c')
-rw-r--r--lib/libdrm/tegra/tegra.c332
1 files changed, 332 insertions, 0 deletions
diff --git a/lib/libdrm/tegra/tegra.c b/lib/libdrm/tegra/tegra.c
new file mode 100644
index 000000000..f7dc89ad0
--- /dev/null
+++ b/lib/libdrm/tegra/tegra.c
@@ -0,0 +1,332 @@
+/*
+ * Copyright © 2012, 2013 Thierry Reding
+ * Copyright © 2013 Erik Faye-Lund
+ * Copyright © 2014 NVIDIA 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <sys/mman.h>
+
+#include <xf86drm.h>
+
+#include <tegra_drm.h>
+
+#include "private.h"
+
+static void drm_tegra_bo_free(struct drm_tegra_bo *bo)
+{
+ struct drm_tegra *drm = bo->drm;
+ struct drm_gem_close args;
+
+ if (bo->map)
+ munmap(bo->map, bo->size);
+
+ memset(&args, 0, sizeof(args));
+ args.handle = bo->handle;
+
+ drmIoctl(drm->fd, DRM_IOCTL_GEM_CLOSE, &args);
+
+ free(bo);
+}
+
+static int drm_tegra_wrap(struct drm_tegra **drmp, int fd, bool close)
+{
+ struct drm_tegra *drm;
+
+ if (fd < 0 || !drmp)
+ return -EINVAL;
+
+ drm = calloc(1, sizeof(*drm));
+ if (!drm)
+ return -ENOMEM;
+
+ drm->close = close;
+ drm->fd = fd;
+
+ *drmp = drm;
+
+ return 0;
+}
+
+int drm_tegra_new(struct drm_tegra **drmp, int fd)
+{
+ bool supported = false;
+ drmVersionPtr version;
+
+ version = drmGetVersion(fd);
+ if (!version)
+ return -ENOMEM;
+
+ if (!strncmp(version->name, "tegra", version->name_len))
+ supported = true;
+
+ drmFreeVersion(version);
+
+ if (!supported)
+ return -ENOTSUP;
+
+ return drm_tegra_wrap(drmp, fd, false);
+}
+
+void drm_tegra_close(struct drm_tegra *drm)
+{
+ if (!drm)
+ return;
+
+ if (drm->close)
+ close(drm->fd);
+
+ free(drm);
+}
+
+int drm_tegra_bo_new(struct drm_tegra_bo **bop, struct drm_tegra *drm,
+ uint32_t flags, uint32_t size)
+{
+ struct drm_tegra_gem_create args;
+ struct drm_tegra_bo *bo;
+ int err;
+
+ if (!drm || size == 0 || !bop)
+ return -EINVAL;
+
+ bo = calloc(1, sizeof(*bo));
+ if (!bo)
+ return -ENOMEM;
+
+ atomic_set(&bo->ref, 1);
+ bo->flags = flags;
+ bo->size = size;
+ bo->drm = drm;
+
+ memset(&args, 0, sizeof(args));
+ args.flags = flags;
+ args.size = size;
+
+ err = drmCommandWriteRead(drm->fd, DRM_TEGRA_GEM_CREATE, &args,
+ sizeof(args));
+ if (err < 0) {
+ err = -errno;
+ free(bo);
+ return err;
+ }
+
+ bo->handle = args.handle;
+
+ *bop = bo;
+
+ return 0;
+}
+
+int drm_tegra_bo_wrap(struct drm_tegra_bo **bop, struct drm_tegra *drm,
+ uint32_t handle, uint32_t flags, uint32_t size)
+{
+ struct drm_tegra_bo *bo;
+
+ if (!drm || !bop)
+ return -EINVAL;
+
+ bo = calloc(1, sizeof(*bo));
+ if (!bo)
+ return -ENOMEM;
+
+ atomic_set(&bo->ref, 1);
+ bo->handle = handle;
+ bo->flags = flags;
+ bo->size = size;
+ bo->drm = drm;
+
+ *bop = bo;
+
+ return 0;
+}
+
+struct drm_tegra_bo *drm_tegra_bo_ref(struct drm_tegra_bo *bo)
+{
+ if (bo)
+ atomic_inc(&bo->ref);
+
+ return bo;
+}
+
+void drm_tegra_bo_unref(struct drm_tegra_bo *bo)
+{
+ if (bo && atomic_dec_and_test(&bo->ref))
+ drm_tegra_bo_free(bo);
+}
+
+int drm_tegra_bo_get_handle(struct drm_tegra_bo *bo, uint32_t *handle)
+{
+ if (!bo || !handle)
+ return -EINVAL;
+
+ *handle = bo->handle;
+
+ return 0;
+}
+
+int drm_tegra_bo_map(struct drm_tegra_bo *bo, void **ptr)
+{
+ struct drm_tegra *drm = bo->drm;
+
+ if (!bo->map) {
+ struct drm_tegra_gem_mmap args;
+ int err;
+
+ memset(&args, 0, sizeof(args));
+ args.handle = bo->handle;
+
+ err = drmCommandWriteRead(drm->fd, DRM_TEGRA_GEM_MMAP, &args,
+ sizeof(args));
+ if (err < 0)
+ return -errno;
+
+ bo->offset = args.offset;
+
+ bo->map = mmap(0, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED,
+ drm->fd, bo->offset);
+ if (bo->map == MAP_FAILED) {
+ bo->map = NULL;
+ return -errno;
+ }
+ }
+
+ if (ptr)
+ *ptr = bo->map;
+
+ return 0;
+}
+
+int drm_tegra_bo_unmap(struct drm_tegra_bo *bo)
+{
+ if (!bo)
+ return -EINVAL;
+
+ if (!bo->map)
+ return 0;
+
+ if (munmap(bo->map, bo->size))
+ return -errno;
+
+ bo->map = NULL;
+
+ return 0;
+}
+
+int drm_tegra_bo_get_flags(struct drm_tegra_bo *bo, uint32_t *flags)
+{
+ struct drm_tegra_gem_get_flags args;
+ struct drm_tegra *drm = bo->drm;
+ int err;
+
+ if (!bo)
+ return -EINVAL;
+
+ memset(&args, 0, sizeof(args));
+ args.handle = bo->handle;
+
+ err = drmCommandWriteRead(drm->fd, DRM_TEGRA_GEM_GET_FLAGS, &args,
+ sizeof(args));
+ if (err < 0)
+ return -errno;
+
+ if (flags)
+ *flags = args.flags;
+
+ return 0;
+}
+
+int drm_tegra_bo_set_flags(struct drm_tegra_bo *bo, uint32_t flags)
+{
+ struct drm_tegra_gem_get_flags args;
+ struct drm_tegra *drm = bo->drm;
+ int err;
+
+ if (!bo)
+ return -EINVAL;
+
+ memset(&args, 0, sizeof(args));
+ args.handle = bo->handle;
+ args.flags = flags;
+
+ err = drmCommandWriteRead(drm->fd, DRM_TEGRA_GEM_SET_FLAGS, &args,
+ sizeof(args));
+ if (err < 0)
+ return -errno;
+
+ return 0;
+}
+
+int drm_tegra_bo_get_tiling(struct drm_tegra_bo *bo,
+ struct drm_tegra_bo_tiling *tiling)
+{
+ struct drm_tegra_gem_get_tiling args;
+ struct drm_tegra *drm = bo->drm;
+ int err;
+
+ if (!bo)
+ return -EINVAL;
+
+ memset(&args, 0, sizeof(args));
+ args.handle = bo->handle;
+
+ err = drmCommandWriteRead(drm->fd, DRM_TEGRA_GEM_GET_TILING, &args,
+ sizeof(args));
+ if (err < 0)
+ return -errno;
+
+ if (tiling) {
+ tiling->mode = args.mode;
+ tiling->value = args.value;
+ }
+
+ return 0;
+}
+
+int drm_tegra_bo_set_tiling(struct drm_tegra_bo *bo,
+ const struct drm_tegra_bo_tiling *tiling)
+{
+ struct drm_tegra_gem_set_tiling args;
+ struct drm_tegra *drm = bo->drm;
+ int err;
+
+ if (!bo)
+ return -EINVAL;
+
+ memset(&args, 0, sizeof(args));
+ args.handle = bo->handle;
+ args.mode = tiling->mode;
+ args.value = tiling->value;
+
+ err = drmCommandWriteRead(drm->fd, DRM_TEGRA_GEM_SET_TILING, &args,
+ sizeof(args));
+ if (err < 0)
+ return -errno;
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 00:06:07 +0000