radeon: add initial atombios modesetting and GEM -> TTM translation layer.

This is an initial import of the atom bios parser with modesetting support
for r500 hw using atombios. It also includes a simple memory manager
layer that translates a radeon GEM style interface onto TTM internally.

So far this memory manager has only been used for pinned object allocation
for the DDX to test modesetting.

1 files changed, 48 insertions, 0 deletions

diff --git a/linux-core/atom-bits.h b/linux-core/atom-bits.h
new file mode 100644
index 00000000..f94d2e27
--- /dev/null
+++ b/linux-core/atom-bits.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2008 Advanced Micro Devices, Inc.  
+ *
+ * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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.
+ *
+ * Author: Stanislaw Skowronek
+ */
+
+#ifndef ATOM_BITS_H
+#define ATOM_BITS_H
+
+static inline uint8_t get_u8(void *bios, int ptr)
+{
+    return ((unsigned char *)bios)[ptr];
+}
+#define U8(ptr) get_u8(ctx->ctx->bios,(ptr))
+#define CU8(ptr) get_u8(ctx->bios,(ptr))
+static inline uint16_t get_u16(void *bios, int ptr)
+{
+    return get_u8(bios,ptr)|(((uint16_t)get_u8(bios,ptr+1))<<8);
+}
+#define U16(ptr) get_u16(ctx->ctx->bios,(ptr))
+#define CU16(ptr) get_u16(ctx->bios,(ptr))
+static inline uint32_t get_u32(void *bios, int ptr)
+{
+    return get_u16(bios,ptr)|(((uint32_t)get_u16(bios,ptr+2))<<16);
+}
+#define U32(ptr) get_u32(ctx->ctx->bios,(ptr))
+#define CU32(ptr) get_u32(ctx->bios,(ptr))
+#define CSTR(ptr) (((char *)(ctx->bios))+(ptr))
+
+#endif