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 #include <linux/memfd.h>
  25 #include <sys/mman.h>
  26 #include <sys/syscall.h>
  27
  28 #include "anv_private.h"
  29
  30 static inline int
  31 memfd_create(const char *name, unsigned int flags)
  32 {
  33    return syscall(SYS_memfd_create, name, flags);
  34 }
  35
  36 uint32_t
  37 anv_gem_create(struct anv_device *device, size_t size)
  38 {
  39    int fd = memfd_create("fake bo", MFD_CLOEXEC);
  40    if (fd == -1)
  41       return 0;
  42
  43    assert(fd != 0);
  44
  45    if (ftruncate(fd, size) == -1)
  46       return 0;
  47
  48    return fd;
  49 }
  50
  51 void
  52 anv_gem_close(struct anv_device *device, uint32_t gem_handle)
  53 {
  54    close(gem_handle);
  55 }
  56
  57 void*
  58 anv_gem_mmap(struct anv_device *device, uint32_t gem_handle,
  59              uint64_t offset, uint64_t size, uint32_t flags)
  60 {
  61    /* Ignore flags, as they're specific to I915_GEM_MMAP. */
  62    (void) flags;
  63
  64    return mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED,
  65                gem_handle, offset);
  66 }
  67
  68 /* This is just a wrapper around munmap, but it also notifies valgrind that
  69  * this map is no longer valid.  Pair this with anv_gem_mmap().
  70  */
  71 void
  72 anv_gem_munmap(void *p, uint64_t size)
  73 {
  74    munmap(p, size);
  75 }
  76
  77 uint32_t
  78 anv_gem_userptr(struct anv_device *device, void *mem, size_t size)
  79 {
  80    return -1;
  81 }
  82
  83 int
  84 anv_gem_wait(struct anv_device *device, uint32_t gem_handle, int64_t *timeout_ns)
  85 {
  86    return 0;
  87 }
  88
  89 int
  90 anv_gem_execbuffer(struct anv_device *device,
  91                    struct drm_i915_gem_execbuffer2 *execbuf)
  92 {
  93    return 0;
  94 }
  95
  96 int
  97 anv_gem_set_tiling(struct anv_device *device,
  98                    uint32_t gem_handle, uint32_t stride, uint32_t tiling)
  99 {
 100    return 0;
 101 }
 102
 103 int
 104 anv_gem_set_caching(struct anv_device *device, uint32_t gem_handle,
 105                     uint32_t caching)
 106 {
 107    return 0;
 108 }
 109
 110 int
 111 anv_gem_set_domain(struct anv_device *device, uint32_t gem_handle,
 112                    uint32_t read_domains, uint32_t write_domain)
 113 {
 114    return 0;
 115 }
 116
 117 int
 118 anv_gem_get_param(int fd, uint32_t param)
 119 {
 120    unreachable("Unused");
 121 }
 122
 123 bool
 124 anv_gem_get_bit6_swizzle(int fd, uint32_t tiling)
 125 {
 126    unreachable("Unused");
 127 }
 128
 129 int
 130 anv_gem_create_context(struct anv_device *device)
 131 {
 132    unreachable("Unused");
 133 }
 134
 135 int
 136 anv_gem_destroy_context(struct anv_device *device, int context)
 137 {
 138    unreachable("Unused");
 139 }
 140
 141 int
 142 anv_gem_get_context_param(int fd, int context, uint32_t param, uint64_t *value)
 143 {
 144    unreachable("Unused");
 145 }
 146
 147 int
 148 anv_gem_get_aperture(int fd, uint64_t *size)
 149 {
 150    unreachable("Unused");
 151 }
 152
 153 bool
 154 anv_gem_supports_48b_addresses(int fd)
 155 {
 156    unreachable("Unused");
 157 }
 158
 159 int
 160 anv_gem_gpu_get_reset_stats(struct anv_device *device,
 161                             uint32_t *active, uint32_t *pending)
 162 {
 163    unreachable("Unused");
 164 }
 165
 166 int
 167 anv_gem_handle_to_fd(struct anv_device *device, uint32_t gem_handle)
 168 {
 169    unreachable("Unused");
 170 }
 171
 172 uint32_t
 173 anv_gem_fd_to_handle(struct anv_device *device, int fd)
 174 {
 175    unreachable("Unused");
 176 }