NetBSD/sys/arch/alpha/tc/cfb.c

397 lines
9.0 KiB
C

/* $NetBSD: cfb.c,v 1.19 1998/06/30 09:02:08 drochner 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/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: cfb.c,v 1.19 1998/06/30 09:02:08 drochner Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/buf.h>
#include <sys/ioctl.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <machine/conf.h>
#include <dev/tc/tcvar.h>
#include <machine/cfbreg.h>
#include <alpha/tc/cfbvar.h>
#if 0
#include <alpha/tc/bt459reg.h>
#endif
#include <dev/rcons/raster.h>
#include <dev/wscons/wscons_raster.h>
#include <dev/wscons/wsdisplayvar.h>
#include <machine/fbio.h>
#include <machine/autoconf.h>
#include <machine/pte.h>
int cfbmatch __P((struct device *, struct cfdata *, void *));
void cfbattach __P((struct device *, struct device *, void *));
struct cfattach cfb_ca = {
sizeof(struct cfb_softc), cfbmatch, cfbattach,
};
void cfb_getdevconfig __P((tc_addr_t dense_addr, struct cfb_devconfig *dc));
struct cfb_devconfig cfb_console_dc;
tc_addr_t cfb_consaddr;
struct wsdisplay_emulops cfb_emulfuncs = {
rcons_cursor, /* could use hardware cursor; punt */
rcons_mapchar,
rcons_putchar,
rcons_copycols,
rcons_erasecols,
rcons_copyrows,
rcons_eraserows,
rcons_alloc_attr
};
struct wsscreen_descr cfb_stdscreen = {
"std",
0, 0, /* will be filled in -- XXX shouldn't, it's global */
&cfb_emulfuncs,
0, 0
};
const struct wsscreen_descr *_cfb_scrlist[] = {
&cfb_stdscreen,
/* XXX other formats, graphics screen? */
};
struct wsscreen_list cfb_screenlist = {
sizeof(_cfb_scrlist) / sizeof(struct wsscreen_descr *), _cfb_scrlist
};
int cfbioctl __P((void *, u_long, caddr_t, int, struct proc *));
int cfbmmap __P((void *, off_t, int));
int cfbintr __P((void *));
static int cfb_alloc_screen __P((void *, const struct wsscreen_descr *,
void **, int *, int *, long *));
static void cfb_free_screen __P((void *, void *));
static void cfb_show_screen __P((void *, void *));
static int cfb_load_font __P((void *, void *, int, int, int, void *));
struct wsdisplay_accessops cfb_accessops = {
cfbioctl,
cfbmmap,
cfb_alloc_screen,
cfb_free_screen,
cfb_show_screen,
cfb_load_font
};
int
cfbmatch(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct tc_attach_args *ta = aux;
if (strncmp("PMAG-BA ", ta->ta_modname, TC_ROM_LLEN) != 0)
return (0);
return (10);
}
void
cfb_getdevconfig(dense_addr, dc)
tc_addr_t dense_addr;
struct cfb_devconfig *dc;
{
struct raster *rap;
struct rcons *rcp;
char *ramdacregp;
int i;
dc->dc_vaddr = dense_addr;
dc->dc_paddr = ALPHA_K0SEG_TO_PHYS(dc->dc_vaddr); /* XXX */
dc->dc_size = CFB_SIZE;
ramdacregp = (char *)dc->dc_vaddr + CFB_RAMDAC_OFFSET;
dc->dc_wid = 1024;
dc->dc_ht = 864;
dc->dc_depth = 8; /* 8 plane */
dc->dc_rowbytes = dc->dc_wid * (dc->dc_depth / 8);
dc->dc_videobase = dc->dc_vaddr + CFB_FB_OFFSET;
/* Initialize the RAMDAC/colormap */
/* start XXX XXX XXX */
(*(volatile u_int32_t *)(ramdacregp + CFB_RAMDAC_ADDRLOW)) = 0;
(*(volatile u_int32_t *)(ramdacregp + CFB_RAMDAC_ADDRHIGH)) = 0;
tc_wmb();
for (i = 0; i < 256; i++) {
(*(volatile u_int32_t *)(ramdacregp + CFB_RAMDAC_CMAPDATA)) =
i ? 0xff : 0;
tc_wmb();
(*(volatile u_int32_t *)(ramdacregp + CFB_RAMDAC_CMAPDATA)) =
i ? 0xff : 0;
tc_wmb();
(*(volatile u_int32_t *)(ramdacregp + CFB_RAMDAC_CMAPDATA)) =
i ? 0xff : 0;
tc_wmb();
}
/* end XXX XXX XXX */
/* clear the screen */
for (i = 0; i < dc->dc_ht * dc->dc_rowbytes; i += sizeof(u_int32_t))
*(u_int32_t *)(dc->dc_videobase + i) = 0x00000000;
rap = &dc->dc_raster;
rap->width = dc->dc_wid;
rap->height = dc->dc_ht;
rap->depth = 8;
rap->linelongs = dc->dc_rowbytes / sizeof(u_int32_t);
rap->pixels = (u_int32_t *)dc->dc_videobase;
/* 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, 34, 80);
cfb_stdscreen.nrows = dc->dc_rcons.rc_maxrow;
cfb_stdscreen.ncols = dc->dc_rcons.rc_maxcol;
}
void
cfbattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct cfb_softc *sc = (struct cfb_softc *)self;
struct tc_attach_args *ta = aux;
struct wsemuldisplaydev_attach_args waa;
int console;
console = (ta->ta_addr == cfb_consaddr);
if (console) {
sc->sc_dc = &cfb_console_dc;
sc->nscreens = 1;
} else {
sc->sc_dc = (struct cfb_devconfig *)
malloc(sizeof(struct cfb_devconfig), M_DEVBUF, M_WAITOK);
cfb_getdevconfig(ta->ta_addr, sc->sc_dc);
}
if (sc->sc_dc->dc_vaddr == NULL) {
printf(": couldn't map memory space; punt!\n");
return;
}
printf(": %d x %d, %dbpp\n", sc->sc_dc->dc_wid, sc->sc_dc->dc_ht,
sc->sc_dc->dc_depth);
/* Establish an interrupt handler, and clear any pending interrupts */
tc_intr_establish(parent, ta->ta_cookie, TC_IPL_TTY, cfbintr, sc);
*(volatile u_int32_t *)(sc->sc_dc->dc_vaddr + CFB_IREQCTRL_OFFSET) = 0;
/* initialize the raster */
waa.console = console;
waa.scrdata = &cfb_screenlist;
waa.accessops = &cfb_accessops;
waa.accesscookie = sc;
config_found(self, &waa, wsemuldisplaydevprint);
}
int
cfbioctl(v, cmd, data, flag, p)
void *v;
u_long cmd;
caddr_t data;
int flag;
struct proc *p;
{
struct cfb_softc *sc = v;
struct cfb_devconfig *dc = sc->sc_dc;
switch (cmd) {
case FBIOGTYPE:
#define fbt ((struct fbtype *)data)
fbt->fb_type = FBTYPE_CFB;
fbt->fb_height = sc->sc_dc->dc_ht;
fbt->fb_width = sc->sc_dc->dc_wid;
fbt->fb_depth = sc->sc_dc->dc_depth;
fbt->fb_cmsize = 256; /* XXX ??? */
fbt->fb_size = sc->sc_dc->dc_size;
#undef fbt
return (0);
#if 0
case FBIOPUTCMAP:
return (*tgar->tgar_set_cmap)(dc, (struct fbcmap *)data);
case FBIOGETCMAP:
return (*tgar->tgar_get_cmap)(dc, (struct fbcmap *)data);
#endif
case FBIOGATTR:
return (ENOTTY); /* XXX ? */
#if 0
case FBIOSVIDEO:
if (*(int *)data == FBVIDEO_OFF)
cfb_blank(sc->sc_dc);
else
cfb_unblank(sc->sc_dc);
return (0);
#endif
case FBIOGVIDEO:
*(int *)data = dc->dc_blanked ? FBVIDEO_OFF : FBVIDEO_ON;
return (0);
#if 0
case FBIOSCURSOR:
return (*tgar->tgar_set_cursor)(dc, (struct fbcursor *)data);
case FBIOGCURSOR:
return (*tgar->tgar_get_cursor)(dc, (struct fbcursor *)data);
case FBIOSCURPOS:
return (*tgar->tgar_set_curpos)(dc, (struct fbcurpos *)data);
case FBIOGCURPOS:
return (*tgar->tgar_get_curpos)(dc, (struct fbcurpos *)data);
case FBIOGCURMAX:
return (*tgar->tgar_get_curmax)(dc, (struct fbcurpos *)data);
#endif
}
return (-1);
}
int
cfbmmap(v, offset, prot)
void *v;
off_t offset;
int prot;
{
struct cfb_softc *sc = v;
if (offset > CFB_SIZE)
return -1;
return alpha_btop(sc->sc_dc->dc_paddr + offset);
}
int
cfbintr(v)
void *v;
{
struct cfb_softc *sc = v;
*(volatile u_int32_t *)(sc->sc_dc->dc_vaddr + CFB_IREQCTRL_OFFSET) = 0;
return (1);
}
int
cfb_alloc_screen(v, type, cookiep, curxp, curyp, attrp)
void *v;
const struct wsscreen_descr *type;
void **cookiep;
int *curxp, *curyp;
long *attrp;
{
struct cfb_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
cfb_free_screen(v, cookie)
void *v;
void *cookie;
{
struct cfb_softc *sc = v;
if (sc->sc_dc == &cfb_console_dc)
panic("cfb_free_screen: console");
sc->nscreens--;
}
void
cfb_show_screen(v, cookie)
void *v;
void *cookie;
{
}
static int
cfb_load_font(v, cookie, first, num, stride, data)
void *v;
void *cookie;
int first, num, stride;
void *data;
{
return (EINVAL);
}
#if 0
int
cfb_cnattach(addr)
tc_addr_t addr;
{
struct cfb_devconfig *dcp = &cfb_console_dc;
long defattr;
cfb_getdevconfig(addr, dcp);
rcons_alloc_attr(&dcp->dc_rcons, 0, 0, 0, &defattr);
wsdisplay_cnattach(&cfb_stdscreen, &dcp->dc_rcons,
0, 0, defattr);
cfb_consaddr = addr;
return(0);
}
#endif