src/intel/vulkan/anv_gem_stubs.c

   1 /*
   2  * Copyright © 2015 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #define _DEFAULT_SOURCE
  25
  26 #include <linux/memfd.h>
  27 #include <sys/mman.h>
  28 #include <sys/syscall.h>
  29
  30 #include "anv_private.h"
  31
  32 static inline int
  33 memfd_create(const char *name, unsigned int flags)
  34 {
  35    return syscall(SYS_memfd_create, name, flags);
  36 }
  37
  38 uint32_t
  39 anv_gem_create(struct anv_device *device, size_t size)
  40 {
  41    int fd = memfd_create("fake bo", MFD_CLOEXEC);
  42    if (fd == -1)
  43       return 0;
  44
  45    assert(fd != 0);
  46
  47    if (ftruncate(fd, size) == -1)
  48       return 0;
  49
  50    return fd;
  51 }
  52
  53 void
  54 anv_gem_close(struct anv_device *device, uint32_t gem_handle)
  55 {
  56    close(gem_handle);
  57 }
  58
  59 void*
  60 anv_gem_mmap(struct anv_device *device, uint32_t gem_handle,
  61              uint64_t offset, uint64_t size, uint32_t flags)
  62 {
  63    /* Ignore flags, as they're specific to I915_GEM_MMAP. */
  64    (void) flags;
  65
  66    return mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED,
  67                gem_handle, offset);
  68 }
  69
  70 /* This is just a wrapper around munmap, but it also notifies valgrind that
  71  * this map is no longer valid.  Pair this with anv_gem_mmap().
  72  */
  73 void
  74 anv_gem_munmap(void *p, uint64_t size)
  75 {
  76    munmap(p, size);
  77 }
  78
  79 uint32_t
  80 anv_gem_userptr(struct anv_device *device, void *mem, size_t size)
  81 {
  82    return -1;
  83 }
  84
  85 int
  86 anv_gem_wait(struct anv_device *device, uint32_t gem_handle, int64_t *timeout_ns)
  87 {
  88    return 0;
  89 }
  90
  91 int
  92 anv_gem_execbuffer(struct anv_device *device,
  93                    struct drm_i915_gem_execbuffer2 *execbuf)
  94 {
  95    return 0;
  96 }
  97
  98 int
  99 anv_gem_set_tiling(struct anv_device *device,
 100                    uint32_t gem_handle, uint32_t stride, uint32_t tiling)
 101 {
 102    return 0;
 103 }
 104
 105 int
 106 anv_gem_set_caching(struct anv_device *device, uint32_t gem_handle,
 107                     uint32_t caching)
 108 {
 109    return 0;
 110 }
 111
 112 int
 113 anv_gem_set_domain(struct anv_device *device, uint32_t gem_handle,
 114                    uint32_t read_domains, uint32_t write_domain)
 115 {
 116    return 0;
 117 }
 118
 119 int
 120 anv_gem_get_param(int fd, uint32_t param)
 121 {
 122    unreachable("Unused");
 123 }
 124
 125 bool
 126 anv_gem_get_bit6_swizzle(int fd, uint32_t tiling)
 127 {
 128    unreachable("Unused");
 129 }
 130
 131 int
 132 anv_gem_create_context(struct anv_device *device)
 133 {
 134    unreachable("Unused");
 135 }
 136
 137 int
 138 anv_gem_destroy_context(struct anv_device *device, int context)
 139 {
 140    unreachable("Unused");
 141 }
 142
 143 int
 144 anv_gem_get_aperture(int fd, uint64_t *size)
 145 {
 146    unreachable("Unused");
 147 }
 148
 149 int
 150 anv_gem_handle_to_fd(struct anv_device *device, uint32_t gem_handle)
 151 {
 152    unreachable("Unused");
 153 }
 154
 155 uint32_t
 156 anv_gem_fd_to_handle(struct anv_device *device, int fd)
 157 {
 158    unreachable("Unused");
 159 }