2001/0430/pc/vgacyber938x.c (diff list | history)

2001/0430/sys/src/9/pc/vgacyber938x.c:1,225 – 2001/0527/sys/src/9/pc/vgacyber938x.c:1,210 (short | long | prev | next)
1998/0205		#include "u.h" #include "../port/lib.h" #include "mem.h" #include "dat.h" #include "fns.h" #include "io.h" #include "../port/error.h" #define Image IMAGE #include <draw.h> #include <memdraw.h>
1999/0119		#include <cursor.h>
1998/0205		#include "screen.h"
1998/0829		enum { CursorON = 0xC8, CursorOFF = 0x00, };
1998/0205		static int cyber938xpageset(VGAscr*, int page) { int opage; opage = inb(0x3D8); outb(0x3D8, page); outb(0x3D9, page); return opage; } static void cyber938xpage(VGAscr* scr, int page) { lock(&scr->devlock); cyber938xpageset(scr, page); unlock(&scr->devlock); } static ulong cyber938xlinear(VGAscr* scr, int* size, int* align) { ulong aperture, oaperture; int oapsize, wasupamem;
2001/0410		int osize;
1998/0205		Pcidev *p;
2001/0410		osize = *size;
1998/0205		oaperture = scr->aperture; oapsize = scr->apsize; wasupamem = scr->isupamem; if(wasupamem) upafree(oaperture, oapsize); scr->isupamem = 0;
2001/0410		scr->mmio = 0;
1998/0205		if(p = pcimatch(nil, 0x1023, 0)){ aperture = p->mem[0].bar & ~0x0F; *size = p->mem[0].size;
2001/0410		/* * Heuristic to detect the MMIO space. We're flying blind * here, with only the XFree86 source to guide us. */ if(p->mem[1].size == 0x20000) scr->mmio = (ulong*)(p->mem[1].bar & ~0x0F);
1998/0205		} else aperture = 0; aperture = upamalloc(aperture, *size, *align); if(aperture == 0){ if(wasupamem && upamalloc(oaperture, oapsize, 0)) scr->isupamem = 1; } else scr->isupamem = 1;
2001/0410		if(aperture) addvgaseg("cyber938xscreen", aperture, osize); if(scr->mmio) addvgaseg("cyber938xmmio", (ulong)scr->mmio, 0x20000);
1998/0205		return aperture; } static void cyber938xcurdisable(VGAscr*) {
1998/0829		vgaxo(Crtx, 0x50, CursorOFF);
1998/0205		} static void cyber938xcurload(VGAscr* scr, Cursor* curs) { uchar *p; int islinear, opage, y; cyber938xcurdisable(scr); opage = 0; p = KADDR(scr->aperture); islinear = vgaxi(Crtx, 0x21) & 0x20; if(!islinear){ lock(&scr->devlock); opage = cyber938xpageset(scr, scr->storage>>16); p += (scr->storage & 0xFFFF); } else p += scr->storage; for(y = 0; y < 16; y++){ *p++ = curs->set[2*y]|curs->clr[2*y]; *p++ = curs->set[2*y + 1]|curs->clr[2*y + 1]; *p++ = 0x00; *p++ = 0x00; *p++ = curs->set[2*y]; *p++ = curs->set[2*y + 1]; *p++ = 0x00; *p++ = 0x00; }
1998/0829		memset(p, 0, (32-y)*8);
1998/0205		if(!islinear){ cyber938xpageset(scr, opage); unlock(&scr->devlock); } /* * Save the cursor hotpoint and enable the cursor. */ scr->offset = curs->offset;
1998/0829		vgaxo(Crtx, 0x50, CursorON);
1998/0205		} static int cyber938xcurmove(VGAscr* scr, Point p) { int x, xo, y, yo; /* * Mustn't position the cursor offscreen even partially, * or it might disappear. Therefore, if x or y is -ve, adjust the * cursor origins instead. */ if((x = p.x+scr->offset.x) < 0){ xo = -x; x = 0; } else xo = 0; if((y = p.y+scr->offset.y) < 0){ yo = -y; y = 0; } else yo = 0; /* * Load the new values. */ vgaxo(Crtx, 0x46, xo); vgaxo(Crtx, 0x47, yo); vgaxo(Crtx, 0x40, x & 0xFF); vgaxo(Crtx, 0x41, (x>>8) & 0xFF); vgaxo(Crtx, 0x42, y & 0xFF); vgaxo(Crtx, 0x43, (y>>8) & 0xFF); return 0;
1998/0209		} static void cyber938xcurenable(VGAscr* scr) { int i; ulong storage; cyber938xcurdisable(scr); /* * Cursor colours. */ for(i = 0x48; i < 0x4C; i++)
1999/1005		vgaxo(Crtx, i, 0x00);
1998/0209		for(i = 0x4C; i < 0x50; i++)
1999/1005		vgaxo(Crtx, i, 0xFF);
1998/0209		/* * Find a place for the cursor data in display memory. */
1998/0829		storage = ((scr->gscreen->width*BY2WD*scr->gscreen->r.max.y+1023)/1024);
1998/0209		vgaxo(Crtx, 0x44, storage & 0xFF); vgaxo(Crtx, 0x45, (storage>>8) & 0xFF);
1998/0829		storage *= 1024;
1998/0209		scr->storage = storage; /* * Load, locate and enable the 32x32 cursor. * (64x64 is bit 0, X11 format is bit 6 and cursor
1998/0214		* enable is bit 7). Bit 3 needs to be set on 9382 * chips otherwise even the white bits are black.
1998/0209		*/ cyber938xcurload(scr, &arrow); cyber938xcurmove(scr, ZP);
1998/0829		vgaxo(Crtx, 0x50, CursorON);
1998/0205		} VGAdev vgacyber938xdev = { "cyber938x",
2001/0430		nil, /* enable */ nil, /* disable */
2001/0527		0, /* enable */ 0, /* disable */
1998/0205		cyber938xpage, /* page */ cyber938xlinear, /* linear */
2001/0430		nil, /* drawinit */
1998/0205		}; VGAcur vgacyber938xcur = { "cyber938xhwgc", cyber938xcurenable, /* enable */ cyber938xcurdisable, /* disable */ cyber938xcurload, /* load */ cyber938xcurmove, /* move */ };