86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
/*++
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Copyright (c) 1993 Weitek Corporation
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Module Name:
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fairway.h
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Abstract:
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This module contains definitions for the IBM Fairway PCI Weitek Video Graphics Card.
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Environment:
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Kernel mode
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Revision History:
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Lee Nolan May 25, 1994
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Copied from wtkp90vl.c with changes for IBM Fairway adapter.
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--*/
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//
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// Default memory addresses for the P9 registers/frame buffer.
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//
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//
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// IBMBJB Changed card address for PowerPC implementation. From the CPU
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// perspective the real physical address is 0xc1100000. The 2 most
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// signifigant bits are cleared here because this is used when getting
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// a virtual address for the card and the routine that generates the
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// virtual address expects the 2 high bits to be cleared. The 3rd
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// most signifigant nibble is cleared because CoprocOffset (0x00100000)
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// is added to this (in this file) to define CoprocPhyBase.
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//
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#define MemBase 0x01000000
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//
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// Bit to write to the sequencer control register to enable/disable P9
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// video output.
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//
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#define P9_VIDEO_ENB 0x10
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#define P9_VIDEO_DIS ~P9_VIDEO_ENB
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//
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// Define the bit in the sequencer control register which determines
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// the sync polarities. For Weitek board, 1 = positive.
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//
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#define HSYNC_POL_MASK 0x20
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#define POL_MASK HSYNC_POL_MASK
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//
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// The following block defines the base address for each of the RS registers
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// defined in the Bt485 spec. The IO addresses given below are used to map
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// the DAC registers to a series of virtual addresses which are kept
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// in the device extension. OEMs should change these definitions as
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// appropriate for their implementation.
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//
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//
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// IBMBJB Made DAC address definitions equal to the addresses used by the Sandalfoot
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// firmware except the upper 2 bits are cleared. The 2 upper bits need to be
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// cleared because these are mapped to virtual addresses and the mapping
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// function expects them to be zeros.
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//
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#define RS_0_Fairway_ADDR 0x01080000
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#define RS_1_Fairway_ADDR 0x01080004
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#define RS_2_Fairway_ADDR 0x01080008
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#define RS_3_Fairway_ADDR 0x0108000c
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#define RS_4_Fairway_ADDR 0x01080010
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#define RS_5_Fairway_ADDR 0x01080014
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#define RS_6_Fairway_ADDR 0x01080018
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#define RS_7_Fairway_ADDR 0x0108001c
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#define RS_8_Fairway_ADDR 0x01080020
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#define RS_9_Fairway_ADDR 0x01080024
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#define RS_A_Fairway_ADDR 0x01080028
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#define RS_B_Fairway_ADDR 0x0108002c
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#define RS_C_Fairway_ADDR 0x01080030
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#define RS_D_Fairway_ADDR 0x01080034
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#define RS_E_Fairway_ADDR 0x01080038
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#define RS_F_Fairway_ADDR 0x0108003c
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