302 lines
6.5 KiB
C
302 lines
6.5 KiB
C
/* $NetBSD: pfb.c,v 1.6 2000/06/26 04:55:37 simonb Exp $ */
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/*
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* Copyright (c) 1995, 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#include <sys/param.h>
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#include <sys/buf.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/ioctl.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/systm.h>
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#include <dev/pci/pcidevs.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/rcons/raster.h>
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#include <dev/wscons/wsconsio.h>
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#include <dev/wscons/wscons_raster.h>
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#include <dev/wscons/wsdisplayvar.h>
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#include <machine/bus.h>
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#include "pfbvar.h"
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static int pfb_is_console = 0;
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int pfbmatch __P((struct device *, struct cfdata *, void *));
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void pfbattach __P((struct device *, struct device *, void *));
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int pfbprint __P((void *, const char *));
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struct cfattach pfb_ca = {
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sizeof(struct pfb_softc), pfbmatch, pfbattach,
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};
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struct pfb_devconfig pfb_console_dc;
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struct wsdisplay_emulops pfb_emulops = {
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rcons_cursor,
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rcons_mapchar,
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rcons_putchar,
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rcons_copycols,
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rcons_erasecols,
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rcons_copyrows,
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rcons_eraserows,
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rcons_alloc_attr
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};
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struct wsscreen_descr pfb_stdscreen = {
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"std",
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0, 0, /* will be filled in -- XXX shouldn't, it's global */
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&pfb_emulops,
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0, 0,
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WSSCREEN_REVERSE
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};
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const struct wsscreen_descr *_pfb_scrlist[] = {
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&pfb_stdscreen,
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/* XXX other formats, graphics screen? */
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};
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struct wsscreen_list pfb_screenlist = {
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sizeof(_pfb_scrlist) / sizeof(struct wsscreen_descr *), _pfb_scrlist
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};
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static int pfb_ioctl __P((void *, u_long, caddr_t, int, struct proc *));
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static paddr_t pfb_mmap __P((void *, off_t, int));
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static int pfb_alloc_screen __P((void *, const struct wsscreen_descr *,
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void **, int *, int *, long *));
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static void pfb_free_screen __P((void *, void *));
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static int pfb_show_screen __P((void *, void *, int,
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void (*) (void *, int, int), void *));
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struct wsdisplay_accessops pfb_accessops = {
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pfb_ioctl,
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pfb_mmap,
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pfb_alloc_screen,
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pfb_free_screen,
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pfb_show_screen,
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0 /* load_font */
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};
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static void pfb_common_init __P((int addr, struct pfb_devconfig *));
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int
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pfbmatch(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct pci_attach_args *pa = aux;
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if (PCI_CLASS(pa->pa_class) == PCI_CLASS_DISPLAY)
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return 1;
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return 0;
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}
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void
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pfbattach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct pfb_softc *sc = (struct pfb_softc *)self;
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struct pci_attach_args *pa = aux;
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struct wsemuldisplaydev_attach_args a;
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struct pfb_devconfig *dc;
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if (pfb_is_console) {
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dc = &pfb_console_dc;
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sc->nscreens = 1;
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} else {
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return;
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}
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sc->sc_dc = dc;
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if (dc->dc_paddr == 0) {
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printf(": cannot map framebuffer\n");
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return;
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}
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dc->dc_raster.pixels = (u_int32_t *)mapiodev(dc->dc_paddr,
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dc->dc_linebytes * dc->dc_height);
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printf(": %d x %d, %dbpp\n",
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dc->dc_raster.width, dc->dc_raster.height, dc->dc_raster.depth);
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a.console = pfb_is_console;
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a.scrdata = &pfb_screenlist;
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a.accessops = &pfb_accessops;
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a.accesscookie = sc;
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config_found(self, &a, wsemuldisplaydevprint);
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}
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void
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pfb_common_init(addr, dc)
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int addr;
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struct pfb_devconfig *dc;
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{
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struct raster *rap;
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struct rcons *rcp;
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int i;
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dc->dc_paddr = addr; /* PA of the frame buffer */
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/* initialize the raster */
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rap = &dc->dc_raster;
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rap->width = 640;
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rap->height = 480;
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rap->depth = 8;
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rap->linelongs = rap->width / sizeof(u_int32_t);
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rap->pixels = (u_int32_t *)addr;
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/* initialize the raster console blitter */
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rcp = &dc->dc_rcons;
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rcp->rc_sp = rap;
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rcp->rc_crow = rcp->rc_ccol = -1;
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rcp->rc_crowp = &rcp->rc_crow;
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rcp->rc_ccolp = &rcp->rc_ccol;
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rcons_init(rcp, 128, 128);
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pfb_stdscreen.nrows = dc->dc_rcons.rc_maxrow;
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pfb_stdscreen.ncols = dc->dc_rcons.rc_maxcol;
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for (i = 0; i < rap->width * rap->height; i += sizeof(u_int32_t))
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*(u_int32_t *)(addr + i) = 0;
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}
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int
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pfb_ioctl(v, cmd, data, flag, p)
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void *v;
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u_long cmd;
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caddr_t data;
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int flag;
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struct proc *p;
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{
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struct pfb_softc *sc = v;
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struct pfb_devconfig *dc = sc->sc_dc;
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struct wsdisplay_fbinfo *wdf;
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struct grfinfo *gm;
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switch (cmd) {
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case WSDISPLAYIO_GTYPE:
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*(u_int *)data = WSDISPLAY_TYPE_PCIMISC; /* XXX ? */
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return 0;
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case WSDISPLAYIO_GINFO:
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wdf = (void *)data;
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wdf->height = sc->sc_dc->dc_raster.height;
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wdf->width = sc->sc_dc->dc_raster.width;
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wdf->depth = sc->sc_dc->dc_raster.depth;
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wdf->cmsize = 256;
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return 0;
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}
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return -1;
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}
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paddr_t
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pfb_mmap(v, offset, prot)
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void *v;
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off_t offset;
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int prot;
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{
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struct pfb_softc *sc = v;
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struct pfb_devconfig *dc = sc->sc_dc;
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if (offset > (dc->dc_linebytes * dc->dc_height) || offset < 0)
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return -1;
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return dc->dc_paddr + offset;
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}
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int
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pfb_alloc_screen(v, type, cookiep, curxp, curyp, attrp)
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void *v;
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const struct wsscreen_descr *type;
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void **cookiep;
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int *curxp, *curyp;
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long *attrp;
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{
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struct pfb_softc *sc = v;
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long defattr;
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if (sc->nscreens > 0)
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return (ENOMEM);
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*cookiep = &sc->sc_dc->dc_rcons; /* one and only for now */
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*curxp = 0;
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*curyp = 0;
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rcons_alloc_attr(&sc->sc_dc->dc_rcons, 0, 0, 0, &defattr);
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*attrp = defattr;
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sc->nscreens++;
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return 0;
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}
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void
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pfb_free_screen(v, cookie)
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void *v;
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void *cookie;
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{
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struct pfb_softc *sc = v;
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if (sc->sc_dc == &pfb_console_dc)
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panic("pfb_free_screen: console");
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sc->nscreens--;
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}
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int
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pfb_show_screen(v, cookie, waitok, cb, cbarg)
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void *v;
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void *cookie;
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int waitok;
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void (*cb) __P((void *, int, int));
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void *cbarg;
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{
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return (0);
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}
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int
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pfb_cnattach(addr)
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int addr;
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{
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struct pfb_devconfig *dc = &pfb_console_dc;
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long defattr;
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pfb_common_init(addr, dc);
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rcons_alloc_attr(&dc->dc_rcons, 0, 0, 0, &defattr);
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wsdisplay_cnattach(&pfb_stdscreen, &dc->dc_rcons, 0, 0, defattr);
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pfb_is_console = 1;
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return 0;
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}
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