lib/i915: Move mmap IOCTLs wrappers into separate file

Move all mmap flavours and support function to separate file in i915
folder. This helps with moving i915 specific functions away from common
libraries.

v2:
	- Autotools still exists. (Petri)
	- Include gem_mman.h directly. (Chris)

v3:
	- Keep includes explicit. (Chris)

Signed-off-by: Antonio Argenziano <antonio.argenziano@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Petri Latvala <petri.latvala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 55 insertions, 0 deletions

diff --git a/lib/i915/gem_mman.h b/lib/i915/gem_mman.h
new file mode 100644
index 00000000..f7242ed7
--- /dev/null
+++ b/lib/i915/gem_mman.h
@@ -0,0 +1,55 @@
+/*
+ * 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 */
+