1 files changed, 159 insertions, 0 deletions
diff --git a/src/gfx/init_gu3.c b/src/gfx/init_gu3.c
new file mode 100644
index 0000000..daf1513
--- /dev/null
+++ b/src/gfx/init_gu3.c
@@ -0,0 +1,159 @@
+/* Copyright (c) 2005 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
+ * 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.
+ *
+ * Neither the name of the Advanced Micro Devices, Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ * */
+
+/* 
+ * This file contains routines used in Redcloud initialization.
+ * */
+
+/*----------------------------------------------------------------------------
+ * gfx_get_core_freq
+ *
+ * Returns the core clock frequency of a GX3.
+ *----------------------------------------------------------------------------
+ */
+#if GFX_INIT_DYNAMIC
+unsigned long
+gu3_get_core_freq(void)
+#else
+unsigned long
+gfx_get_core_freq(void)
+#endif
+{
+    unsigned long value;
+
+    /* CPU SPEED IS REPORTED BY A VSM IN VSA II */
+    /* Virtual Register Class = 0x12 (Sysinfo)  */
+    /* CPU Speed Register     = 0x01            */
+
+    OUTW(0xAC1C, 0xFC53);
+    OUTW(0xAC1C, 0x1201);
+
+    value = (unsigned long)(INW(0xAC1E));
+
+    return (value);
+}
+
+/*----------------------------------------------------------------------------
+ * gfx_get_cpu_register_base
+ * 
+ * This routine returns the base address for display controller registers.  
+ *----------------------------------------------------------------------------
+ */
+#if GFX_INIT_DYNAMIC
+unsigned long
+gu3_get_cpu_register_base(void)
+#else
+unsigned long
+gfx_get_cpu_register_base(void)
+#endif
+{
+    return gfx_pci_config_read(0x80000918);
+}
+
+/*----------------------------------------------------------------------------
+ * gfx_get_graphics_register_base
+ * 
+ * This routine returns the base address for the graphics acceleration.  
+ *----------------------------------------------------------------------------
+ */
+#if GFX_INIT_DYNAMIC
+unsigned long
+gu3_get_graphics_register_base(void)
+#else
+unsigned long
+gfx_get_graphics_register_base(void)
+#endif
+{
+    return gfx_pci_config_read(0x80000914);
+}
+
+/*----------------------------------------------------------------------------
+ * gfx_get_frame_buffer_base
+ * 
+ * This routine returns the base address for graphics memory.  
+ *----------------------------------------------------------------------------
+ */
+#if GFX_INIT_DYNAMIC
+unsigned long
+gu3_get_frame_buffer_base(void)
+#else
+unsigned long
+gfx_get_frame_buffer_base(void)
+#endif
+{
+    return gfx_pci_config_read(0x80000910);
+}
+
+/*----------------------------------------------------------------------------
+ * gfx_get_frame_buffer_size
+ * 
+ * This routine returns the total size of graphics memory, in bytes.
+ *----------------------------------------------------------------------------
+ */
+#if GFX_INIT_DYNAMIC
+unsigned long
+gu3_get_frame_buffer_size(void)
+#else
+unsigned long
+gfx_get_frame_buffer_size(void)
+#endif
+{
+    unsigned long value;
+
+    /* FRAME BUFFER SIZE IS REPORTED BY A VSM IN VSA II */
+    /* Virtual Register Class     = 0x02                */
+    /* VG_MEM_SIZE (1MB units)    = 0x00                */
+
+    OUTW(0xAC1C, 0xFC53);
+    OUTW(0xAC1C, 0x0200);
+
+    value = (unsigned long)(INW(0xAC1E)) & 0xFEl;
+
+    /* LIMIT FRAME BUFFER SIZE TO 16MB TO MATCH LEGACY */
+
+    if ((value << 20) > 0x1000000)
+        return 0x1000000;
+
+    return (value << 20);
+}
+
+/*----------------------------------------------------------------------------
+ * gfx_get_vid_register_base
+ * 
+ * This routine returns the base address for the video hardware.  
+ *----------------------------------------------------------------------------
+ */
+#if GFX_INIT_DYNAMIC
+unsigned long
+gu3_get_vid_register_base(void)
+#else
+unsigned long
+gfx_get_vid_register_base(void)
+#endif
+{
+    return gfx_pci_config_read(0x8000091C);
+}
+
+/* END OF FILE */