NetBSD/sys/arch/bebox/pci/pfb.c

302 lines
6.5 KiB
C

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