Initial commit of the xf86-video-amd tree

1 files changed, 300 insertions, 0 deletions

diff --git a/src/amd_gx_regacc.c b/src/amd_gx_regacc.c
new file mode 100644
index 0000000..7dc3339
--- /dev/null
+++ b/src/amd_gx_regacc.c
@@ -0,0 +1,300 @@
+/* Copyright (c) 2003-2005 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 is the main file used to add Durango graphics support to a software 
+ * project.  The main reason to have a single file include the other files
+ * is that it centralizes the location of the compiler options.  This file
+ * should be tuned for a specific implementation, and then modified as needed
+ * for new Durango releases.  The releases.txt file indicates any updates to
+ * this main file, such as a new definition for a new hardware platform. 
+ *
+ * In other words, this file should be copied from the Durango source files
+ * once when a software project starts, and then maintained as necessary.  
+ * It should not be recopied with new versions of Durango unless the 
+ * developer is willing to tune the file again for the specific project.
+ * */
+
+#include "gfx_rtns.h"
+#include "gfx_defs.h"
+#include "gfx_regs.h"
+
+#define GU2_WAIT_PENDING	\
+		while(READ_GP32(MGP_BLT_STATUS) & MGP_BS_BLT_PENDING)
+#define GU2_WAIT_HALF_EMPTY \
+		while(!(READ_GP32(MGP_BLT_STATUS) & MGP_BS_HALF_EMPTY))
+
+extern unsigned long gu2_pitch;
+extern unsigned long gu2_xshift;
+extern unsigned short GFXpatternFlags;
+extern unsigned long gu2_rop32;
+extern unsigned short gu2_blt_mode;
+
+void gfx_write_reg8(unsigned long offset, unsigned char value);
+void gfx_write_reg16(unsigned long offset, unsigned short value);
+void gfx_write_reg32(unsigned long offset, unsigned long value);
+unsigned short gfx_read_reg16(unsigned long offset);
+unsigned long gfx_read_reg32(unsigned long offset);
+void gfx_write_vid32(unsigned long offset, unsigned long value);
+unsigned long gfx_read_vid32(unsigned long offset);
+unsigned long gfx_read_vip32(unsigned long offset);
+void gfx_write_vip32(unsigned long offset, unsigned long value);
+void gfx_mono_bitmap_to_screen_blt_swp(unsigned short srcx,
+    unsigned short srcy,
+    unsigned short dstx,
+    unsigned short dsty,
+    unsigned short width,
+    unsigned short height, unsigned char *data, short pitch);
+unsigned int GetVideoMemSize(void);
+
+/* ROUTINES added accessing hardware reg */
+void
+gfx_write_reg8(unsigned long offset, unsigned char value)
+{
+    WRITE_REG8(offset, value);
+}
+
+void
+gfx_write_reg16(unsigned long offset, unsigned short value)
+{
+    WRITE_REG16(offset, value);
+}
+
+void
+gfx_write_reg32(unsigned long offset, unsigned long value)
+{
+    WRITE_REG32(offset, value);
+}
+unsigned short
+gfx_read_reg16(unsigned long offset)
+{
+    unsigned short value;
+
+    value = READ_REG16(offset);
+    return value;
+}
+unsigned long
+gfx_read_reg32(unsigned long offset)
+{
+    unsigned long value;
+
+    value = READ_REG32(offset);
+    return value;
+}
+
+void
+gfx_write_vid32(unsigned long offset, unsigned long value)
+{
+    WRITE_VID32(offset, value);
+}
+unsigned long
+gfx_read_vid32(unsigned long offset)
+{
+    unsigned long value;
+
+    value = READ_VID32(offset);
+    return value;
+}
+
+/*Addition for the VIP code */
+unsigned long
+gfx_read_vip32(unsigned long offset)
+{
+    unsigned long value;
+
+    value = READ_VIP32(offset);
+    return value;
+}
+
+void
+gfx_write_vip32(unsigned long offset, unsigned long value)
+{
+    WRITE_VIP32(offset, value);
+}
+
+#define SWAP_BITS_IN_BYTES(v) 								\
+ (((0x01010101 & (v)) << 7) | ((0x02020202 & (v)) << 5) | 	\
+  ((0x04040404 & (v)) << 3) | ((0x08080808 & (v)) << 1) | 	\
+  ((0x10101010 & (v)) >> 1) | ((0x20202020 & (v)) >> 3) | 	\
+  ((0x40404040 & (v)) >> 5) | ((0x80808080 & (v)) >> 7))
+
+#define WRITE_GPREG_STRING32_SWP(regoffset, dwords, 					\
+				counter, array, array_offset, temp)						\
+{                                                           			\
+	temp = (unsigned long)array + (array_offset);           			\
+	for (counter = 0; counter < dwords; counter++)          			\
+		WRITE_GP32 (regoffset, 											\
+			SWAP_BITS_IN_BYTES(*((unsigned long *)temp + counter)));	\
+}
+
+void
+gfx_mono_bitmap_to_screen_blt_swp(unsigned short srcx, unsigned short srcy,
+    unsigned short dstx, unsigned short dsty,
+    unsigned short width, unsigned short height,
+    unsigned char *data, short pitch)
+{
+    unsigned long dstoffset, size, bytes;
+    unsigned long offset, temp_offset, temp1 = 0, temp2 = 0;
+    unsigned long i, j = 0, fifo_lines, dwords_extra, bytes_extra;
+    unsigned long shift = 0;
+
+    size = (((unsigned long)width) << 16) | height;
+
+    /* CALCULATE STARTING OFFSETS */
+
+    offset = (unsigned long)srcy *pitch + ((unsigned long)srcx >> 3);
+
+    dstoffset = (unsigned long)dsty *gu2_pitch +
+        (((unsigned long)dstx) << gu2_xshift);
+
+    /* CHECK IF PATTERN ORIGINS NEED TO BE SET */
+
+    if (GFXpatternFlags) {
+        /* COMBINE X AND Y PATTERN ORIGINS WITH OFFSET */
+
+        dstoffset |= ((unsigned long)(dstx & 7)) << 26;
+        dstoffset |= ((unsigned long)(dsty & 7)) << 29;
+    }
+
+    bytes = ((srcx & 7) + width + 7) >> 3;
+    fifo_lines = bytes >> 5;
+    dwords_extra = (bytes & 0x0000001Cl) >> 2;
+    bytes_extra = bytes & 0x00000003l;
+
+    /* POLL UNTIL ABLE TO WRITE TO THE REGISTERS */
+    /* Put off poll for as long as possible (do most calculations first).   */
+    /* The source offset is always 0 since we allow misaligned dword reads. */
+    /* Need to wait for busy instead of pending, since hardware clears      */
+    /* the host data FIFO at the beginning of a BLT.                        */
+
+    GU2_WAIT_PENDING;
+    WRITE_GP32(MGP_RASTER_MODE, gu2_rop32);
+    WRITE_GP32(MGP_SRC_OFFSET, ((unsigned long)srcx & 7) << 26);
+    WRITE_GP32(MGP_DST_OFFSET, dstoffset);
+    WRITE_GP32(MGP_WID_HEIGHT, size);
+    WRITE_GP32(MGP_STRIDE, gu2_pitch);
+    WRITE_GP16(MGP_BLT_MODE,
+        gu2_blt_mode | MGP_BM_SRC_HOST | MGP_BM_SRC_MONO);
+
+    /* WAIT FOR BLT TO BE LATCHED */
+
+    GU2_WAIT_PENDING;
+
+    /* WRITE ALL OF THE DATA TO THE HOST SOURCE REGISTER */
+
+    while (height--) {
+        temp_offset = offset;
+
+        /* WRITE ALL FULL FIFO LINES */
+
+        for (i = 0; i < fifo_lines; i++) {
+            GU2_WAIT_HALF_EMPTY;
+            WRITE_GPREG_STRING32_SWP(MGP_HST_SOURCE, 8, j, data, temp_offset,
+                temp1);
+            temp_offset += 32;
+        }
+
+        /* WRITE ALL FULL DWORDS */
+
+        GU2_WAIT_HALF_EMPTY;
+        if (dwords_extra) {
+            WRITE_GPREG_STRING32_SWP(MGP_HST_SOURCE, dwords_extra, i, data,
+                temp_offset, temp1);
+            temp_offset += (dwords_extra << 2);
+        }
+
+        /* WRITE REMAINING BYTES */
+
+        shift = 0;
+        if (bytes_extra)
+            WRITE_GPREG_STRING8(MGP_HST_SOURCE, bytes_extra, shift, i, data,
+                temp_offset, temp1, temp2);
+
+        offset += pitch;
+    }
+}
+
+unsigned int
+GetVideoMemSize(void)
+{
+    unsigned int graphicsMemBaseAddr;
+    unsigned int totalMem = 0;
+    int i;
+    unsigned int graphicsMemMask, graphicsMemShift;
+    unsigned int mcBankCfg = gfx_read_reg32(0x8408);
+    unsigned int dimmShift = 4;
+
+    /* Read graphics base address. */
+
+    graphicsMemBaseAddr = gfx_read_reg32(0x8414);
+
+    graphicsMemMask = 0x7FF;
+    graphicsMemShift = 19;
+
+    /* Calculate total memory size for GXm. */
+
+    for (i = 0; i < 2; i++) {
+        if (((mcBankCfg >> dimmShift) & 0x7) != 0x7) {
+            switch ((mcBankCfg >> (dimmShift + 4)) & 0x7) {
+            case 0:
+                totalMem += 0x400000;
+                break;
+            case 1:
+                totalMem += 0x800000;
+                break;
+            case 2:
+                totalMem += 0x1000000;
+                break;
+            case 3:
+                totalMem += 0x2000000;
+                break;
+            case 4:
+                totalMem += 0x4000000;
+                break;
+            case 5:
+                totalMem += 0x8000000;
+                break;
+            case 6:
+                totalMem += 0x10000000;
+                break;
+            case 7:
+                totalMem += 0x20000000;
+                break;
+            default:
+                break;
+            }
+        }
+        dimmShift += 16;
+    }
+
+    /* Calculate graphics memory base address */
+
+    graphicsMemBaseAddr &= graphicsMemMask;
+    graphicsMemBaseAddr <<= graphicsMemShift;
+
+    return (totalMem - graphicsMemBaseAddr);
+}
+
+/* END OF FILE */