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#include <u.h>
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#include <libc.h>
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#include <bio.h>
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#include "pci.h"
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#include "vga.h"
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/*
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* IBM 8514/A Graphics Coprocessor.
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*/
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enum {
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Subsys = 0x42E8, /* Subsystem Status (R), Control (W) */
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Advfunc = 0x4AE8, /* Advanced Function Control */
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CurY = 0x82E8, /* Current Y Position */
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CurX = 0x86E8, /* Current X Position */
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DestyAxstp = 0x8AE8, /* Destination Y Position/Axial Step Constant */
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DestxDiastp = 0x8EE8, /* Destination X Position/Diagonal Step Constant */
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ErrTerm = 0x92E8, /* Error Term */
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MajAxisPcnt = 0x96E8, /* Major Axis Pixel Count */
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GPstat = 0x9AE8, /* Graphics Processor Status (R) */
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Cmd = 0x9AE8, /* Drawing Command (W) */
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ShortStroke = 0x9EE8, /* Short Stroke Vector (W) */
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BkgdColor = 0xA2E8, /* Background Colour */
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FrgdColor = 0xA6E8, /* Foreground Colour */
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WrtMask = 0xAAE8, /* Bitplane Write Mask */
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RdMask = 0xAEE8, /* Bitplane Read Mask */
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ColorCmp = 0xB2E8, /* Colour Compare */
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BkgdMix = 0xB6E8, /* Background Mix */
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FrgdMix = 0xBAE8, /* Foreground Mix */
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Multifunc = 0xBEE8, /* Multifunction Control */
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PixTrans = 0xE2E8, /* Pixel Data Transfer */
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};
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enum { /* Multifunc Index */
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MinAxisPcnt = 0x0000, /* Minor Axis Pixel Count */
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ScissorsT = 0x1000, /* Top Scissors */
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ScissorsL = 0x2000, /* Left Scissors */
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ScissorsB = 0x3000, /* Bottom Scissors */
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ScissorsR = 0x4000, /* Right Scissors */
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MemCntl = 0x5000, /* Memory Control */
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PixCntl = 0xA000, /* Pixel Control */
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MultMisc = 0xE000, /* Miscellaneous Multifunction Control (S3) */
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ReadSel = 0xF000, /* Read Register Select (S3) */
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};
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static void
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load(Vga* vga, Ctlr*)
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{
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outportw(Pixmask, 0x00);
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outportw(Subsys, 0x8000|0x1000);
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outportw(Subsys, 0x4000|0x1000);
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outportw(Pixmask, 0xFF);
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outportw(FrgdMix, 0x47);
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outportw(BkgdMix, 0x07);
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outportw(Multifunc, ScissorsT|0x000);
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outportw(Multifunc, ScissorsL|0x000);
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outportw(Multifunc, ScissorsB|(vga->vmz/vga->mode->x-1));
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outportw(Multifunc, ScissorsR|(vga->mode->x-1));
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outportw(WrtMask, 0xFFFF);
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outportw(Multifunc, PixCntl|0x0000);
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}
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static void
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dump(Vga*, Ctlr* ctlr)
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{
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printitem(ctlr->name, "Advfunc");
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Bprint(&stdout, "%9.4uX\n", inportw(Advfunc));
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printitem(ctlr->name, "Subsys");
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Bprint(&stdout, "%9.4uX\n", inportw(Subsys));
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}
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Ctlr ibm8514 = {
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"ibm8514", /* name */
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0, /* snarf */
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0, /* options */
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0, /* init */
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load, /* load */
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dump, /* dump */
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};
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