1 /* 2 * Copyright © 2007, 2011, 2013, 2014, 2019 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 25 #ifndef GEM_MMAN_H 26 #define GEM_MMAN_H 27 28 void *gem_mmap__gtt(int fd, uint32_t handle, uint64_t size, unsigned prot); 29 void *gem_mmap__cpu(int fd, uint32_t handle, uint64_t offset, uint64_t size, unsigned prot); 30 31 bool gem_mmap__has_wc(int fd); 32 void *gem_mmap__wc(int fd, uint32_t handle, uint64_t offset, uint64_t size, unsigned prot); 33 34 #ifndef I915_GEM_DOMAIN_WC 35 #define I915_GEM_DOMAIN_WC 0x80 36 #endif 37 38 void *__gem_mmap__gtt(int fd, uint32_t handle, uint64_t size, unsigned prot); 39 void *__gem_mmap__cpu(int fd, uint32_t handle, uint64_t offset, uint64_t size, unsigned prot); 40 void *__gem_mmap__wc(int fd, uint32_t handle, uint64_t offset, uint64_t size, unsigned prot); 41 42 int gem_munmap(void *ptr, uint64_t size); 43 44 /** 45 * gem_require_mmap_wc: 46 * @fd: open i915 drm file descriptor 47 * 48 * Feature test macro to query whether direct (i.e. cpu access path, bypassing 49 * the gtt) write-combine memory mappings are available. Automatically skips 50 * through igt_require() if not. 51 */ 52 #define gem_require_mmap_wc(fd) igt_require(gem_mmap__has_wc(fd)) 53 54 #endif /* GEM_MMAN_H */ 55 56