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Diffstat (limited to 'tests/radeon/rbo.c')
| -rw-r--r-- | tests/radeon/rbo.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/tests/radeon/rbo.c b/tests/radeon/rbo.c new file mode 100644 index 0000000..70a288c --- /dev/null +++ b/tests/radeon/rbo.c @@ -0,0 +1,171 @@ +/* + * Copyright © 2011 Red Hat + * + * 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: + * Jerome Glisse <j.glisse@gmail.com> + */ +#define _FILE_OFFSET_BITS 64 +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/mman.h> +#include <errno.h> +#include "xf86drm.h" +#include "radeon_drm.h" +#include "rbo.h" + +struct rbo *rbo(int fd, unsigned handle, unsigned size, + unsigned alignment, void *ptr) +{ + struct rbo *bo; + int r; + + bo = calloc(1, sizeof(*bo)); + if (bo == NULL) { + return NULL; + } + list_inithead(&bo->list); + bo->fd = fd; + bo->size = size; + bo->handle = handle; + bo->refcount = 1; + bo->alignment = alignment; + + if (handle) { + struct drm_gem_open open_arg; + + memset(&open_arg, 0, sizeof(open_arg)); + open_arg.name = handle; + r = drmIoctl(fd, DRM_IOCTL_GEM_OPEN, &open_arg); + if (r != 0) { + free(bo); + return NULL; + } + bo->handle = open_arg.handle; + } else { + struct drm_radeon_gem_create args; + + args.size = size; + args.alignment = alignment; + args.initial_domain = RADEON_GEM_DOMAIN_CPU; + args.flags = 0; + args.handle = 0; + r = drmCommandWriteRead(fd, DRM_RADEON_GEM_CREATE, + &args, sizeof(args)); + bo->handle = args.handle; + if (r) { + fprintf(stderr, "Failed to allocate :\n"); + fprintf(stderr, " size : %d bytes\n", size); + fprintf(stderr, " alignment : %d bytes\n", alignment); + free(bo); + return NULL; + } + } + if (ptr) { + if (rbo_map(bo)) { + fprintf(stderr, "%s failed to copy data into bo\n", __func__); + return rbo_decref(bo); + } + memcpy(bo->data, ptr, size); + rbo_unmap(bo); + } + return bo; +} + +int rbo_map(struct rbo *bo) +{ + struct drm_radeon_gem_mmap args; + void *ptr; + int r; + + if (bo->mapcount++ != 0) { + return 0; + } + /* Zero out args to make valgrind happy */ + memset(&args, 0, sizeof(args)); + args.handle = bo->handle; + args.offset = 0; + args.size = (uint64_t)bo->size; + r = drmCommandWriteRead(bo->fd, DRM_RADEON_GEM_MMAP, + &args, sizeof(args)); + if (r) { + fprintf(stderr, "error mapping %p 0x%08X (error = %d)\n", + bo, bo->handle, r); + return r; + } + ptr = mmap(0, args.size, PROT_READ|PROT_WRITE, MAP_SHARED, bo->fd, args.addr_ptr); + if (ptr == MAP_FAILED) { + fprintf(stderr, "%s failed to map bo\n", __func__); + return -errno; + } + bo->data = ptr; + return 0; +} + +void rbo_unmap(struct rbo *bo) +{ + if (--bo->mapcount > 0) { + return; + } + munmap(bo->data, bo->size); + bo->data = NULL; +} + +struct rbo *rbo_incref(struct rbo *bo) +{ + bo->refcount++; + return bo; +} + +struct rbo *rbo_decref(struct rbo *bo) +{ + struct drm_gem_close args; + + if (bo == NULL) + return NULL; + if (--bo->refcount > 0) { + return NULL; + } + + munmap(bo->data, bo->size); + memset(&args, 0, sizeof(args)); + args.handle = bo->handle; + drmIoctl(bo->fd, DRM_IOCTL_GEM_CLOSE, &args); + memset(bo, 0, sizeof(struct rbo)); + free(bo); + return NULL; +} + +int rbo_wait(struct rbo *bo) +{ + struct drm_radeon_gem_wait_idle args; + int ret; + + /* Zero out args to make valgrind happy */ + memset(&args, 0, sizeof(args)); + args.handle = bo->handle; + do { + ret = drmCommandWriteRead(bo->fd, DRM_RADEON_GEM_WAIT_IDLE, + &args, sizeof(args)); + } while (ret == -EBUSY); + return ret; +} |