1 files changed, 283 insertions, 0 deletions
diff --git a/src/vulkan/gem.c b/src/vulkan/gem.c
new file mode 100644
index 00000000000..5cc5e5d8e84
--- /dev/null
+++ b/src/vulkan/gem.c
@@ -0,0 +1,283 @@
+/*
+ * Copyright © 2015 Intel 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 (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.
+ */
+
+#define _DEFAULT_SOURCE
+
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#include "private.h"
+
+#ifdef HAVE_VALGRIND
+#include <valgrind.h>
+#include <memcheck.h>
+#define VG(x) x
+#else
+#define VG(x)
+#endif
+
+#define VG_CLEAR(s) VG(memset(&s, 0, sizeof(s)))
+
+static int
+anv_ioctl(int fd, unsigned long request, void *arg)
+{
+   int ret;
+
+   do {
+      ret = ioctl(fd, request, arg);
+   } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
+
+   return ret;
+}
+
+/**
+ * Wrapper around DRM_IOCTL_I915_GEM_CREATE.
+ *
+ * Return gem handle, or 0 on failure. Gem handles are never 0.
+ */
+uint32_t
+anv_gem_create(struct anv_device *device, size_t size)
+{
+   struct drm_i915_gem_create gem_create;
+   int ret;
+
+   VG_CLEAR(gem_create);
+   gem_create.size = size;
+
+   ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_CREATE, &gem_create);
+   if (ret != 0) {
+      /* FIXME: What do we do if this fails? */
+      return 0;
+   }
+
+   return gem_create.handle;
+}
+
+void
+anv_gem_close(struct anv_device *device, int gem_handle)
+{
+   struct drm_gem_close close;
+
+   VG_CLEAR(close);
+   close.handle = gem_handle;
+   anv_ioctl(device->fd, DRM_IOCTL_GEM_CLOSE, &close);
+}
+
+/**
+ * Wrapper around DRM_IOCTL_I915_GEM_MMAP.
+ */
+void*
+anv_gem_mmap(struct anv_device *device, uint32_t gem_handle,
+             uint64_t offset, uint64_t size)
+{
+   struct drm_i915_gem_mmap gem_mmap;
+   int ret;
+
+   VG_CLEAR(gem_mmap);
+   gem_mmap.handle = gem_handle;
+   gem_mmap.offset = offset;
+   gem_mmap.size = size;
+   ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_MMAP, &gem_mmap);
+   if (ret != 0) {
+      /* FIXME: Is NULL the right error return? Cf MAP_INVALID */
+      return NULL;
+   }
+
+   VG(VALGRIND_MALLOCLIKE_BLOCK(gem_mmap.addr_ptr, gem_mmap.size, 0, 1));
+   return (void *)(uintptr_t) gem_mmap.addr_ptr;
+}
+
+/* This is just a wrapper around munmap, but it also notifies valgrind that
+ * this map is no longer valid.  Pair this with anv_gem_mmap().
+ */
+void
+anv_gem_munmap(void *p, uint64_t size)
+{
+   munmap(p, size);
+   VG(VALGRIND_FREELIKE_BLOCK(p, 0));
+}
+
+int
+anv_gem_userptr(struct anv_device *device, void *mem, size_t size)
+{
+   struct drm_i915_gem_userptr userptr;
+   int ret;
+
+   VG_CLEAR(userptr);
+   userptr.user_ptr = (__u64)((unsigned long) mem);
+   userptr.user_size = size;
+   userptr.flags = 0;
+
+   ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_USERPTR, &userptr);
+   if (ret == -1)
+      return 0;
+
+   return userptr.handle;
+}
+
+/**
+ * On error, \a timeout_ns holds the remaining time.
+ */
+int
+anv_gem_wait(struct anv_device *device, int gem_handle, int64_t *timeout_ns)
+{
+   struct drm_i915_gem_wait wait;
+   int ret;
+
+   VG_CLEAR(wait);
+   wait.bo_handle = gem_handle;
+   wait.timeout_ns = *timeout_ns;
+   wait.flags = 0;
+
+   ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_WAIT, &wait);
+   *timeout_ns = wait.timeout_ns;
+   if (ret == -1)
+      return -errno;
+
+   return ret;
+}
+
+int
+anv_gem_execbuffer(struct anv_device *device,
+                   struct drm_i915_gem_execbuffer2 *execbuf)
+{
+   return anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, execbuf);
+}
+
+int
+anv_gem_set_tiling(struct anv_device *device,
+                   int gem_handle, uint32_t stride, uint32_t tiling)
+{
+   struct drm_i915_gem_set_tiling set_tiling;
+   int ret;
+
+   /* set_tiling overwrites the input on the error path, so we have to open
+    * code anv_ioctl.
+    */
+
+   do {
+      VG_CLEAR(set_tiling);
+      set_tiling.handle = gem_handle;
+      set_tiling.tiling_mode = I915_TILING_X;
+      set_tiling.stride = stride;
+
+      ret = ioctl(device->fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling);
+   } while (ret == -1 && (errno == EINTR || errno == EAGAIN));
+
+   return ret;
+}
+
+int
+anv_gem_get_param(int fd, uint32_t param)
+{
+   drm_i915_getparam_t gp;
+   int ret, tmp;
+
+   VG_CLEAR(gp);
+   gp.param = param;
+   gp.value = &tmp;
+   ret = anv_ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp);
+   if (ret == 0)
+      return tmp;
+
+   return 0;
+}
+
+int
+anv_gem_create_context(struct anv_device *device)
+{
+   struct drm_i915_gem_context_create create;
+   int ret;
+
+   VG_CLEAR(create);
+
+   ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_CONTEXT_CREATE, &create);
+   if (ret == -1)
+      return -1;
+
+   return create.ctx_id;
+}
+
+int
+anv_gem_destroy_context(struct anv_device *device, int context)
+{
+   struct drm_i915_gem_context_destroy destroy;
+
+   VG_CLEAR(destroy);
+   destroy.ctx_id = context;
+
+   return anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_CONTEXT_DESTROY, &destroy);
+}
+
+int
+anv_gem_get_aperture(struct anv_device *device, uint64_t *size)
+{
+   struct drm_i915_gem_get_aperture aperture;
+   int ret;
+
+   VG_CLEAR(aperture);
+   ret = anv_ioctl(device->fd, DRM_IOCTL_I915_GEM_GET_APERTURE, &aperture);
+   if (ret == -1)
+      return -1;
+
+   *size = aperture.aper_available_size;
+
+   return 0;
+}
+
+int
+anv_gem_handle_to_fd(struct anv_device *device, int gem_handle)
+{
+   struct drm_prime_handle args;
+   int ret;
+
+   VG_CLEAR(args);
+   args.handle = gem_handle;
+   args.flags = DRM_CLOEXEC;
+
+   ret = anv_ioctl(device->fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &args);
+   if (ret == -1)
+      return -1;
+
+   return args.fd;
+}
+
+int
+anv_gem_fd_to_handle(struct anv_device *device, int fd)
+{
+   struct drm_prime_handle args;
+   int ret;
+
+   VG_CLEAR(args);
+   args.fd = fd;
+
+   ret = anv_ioctl(device->fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &args);
+   if (ret == -1)
+      return 0;
+
+   return args.handle;
+}