1 files changed, 55 insertions, 0 deletions
diff --git a/lib/i915/gem_mman.h b/lib/i915/gem_mman.h
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+++ b/lib/i915/gem_mman.h
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+/*
+ * Copyright © 2007, 2011, 2013, 2014, 2019 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.
+ *
+ */
+
+#ifndef GEM_MMAN_H
+#define GEM_MMAN_H
+
+void *gem_mmap__gtt(int fd, uint32_t handle, uint64_t size, unsigned prot);
+void *gem_mmap__cpu(int fd, uint32_t handle, uint64_t offset, uint64_t size, unsigned prot);
+
+bool gem_mmap__has_wc(int fd);
+void *gem_mmap__wc(int fd, uint32_t handle, uint64_t offset, uint64_t size, unsigned prot);
+
+#ifndef I915_GEM_DOMAIN_WC
+#define I915_GEM_DOMAIN_WC 0x80
+#endif
+
+void *__gem_mmap__gtt(int fd, uint32_t handle, uint64_t size, unsigned prot);
+void *__gem_mmap__cpu(int fd, uint32_t handle, uint64_t offset, uint64_t size, unsigned prot);
+void *__gem_mmap__wc(int fd, uint32_t handle, uint64_t offset, uint64_t size, unsigned prot);
+
+int gem_munmap(void *ptr, uint64_t size);
+
+/**
+ * gem_require_mmap_wc:
+ * @fd: open i915 drm file descriptor
+ *
+ * Feature test macro to query whether direct (i.e. cpu access path, bypassing
+ * the gtt) write-combine memory mappings are available. Automatically skips
+ * through igt_require() if not.
+ */
+#define gem_require_mmap_wc(fd) igt_require(gem_mmap__has_wc(fd))
+
+#endif /* GEM_MMAN_H */
+