387 lines
8.9 KiB
C
387 lines
8.9 KiB
C
/* $NetBSD: cfb.c,v 1.24 2000/03/26 10:32:52 nisimura 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/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: cfb.c,v 1.24 2000/03/26 10:32:52 nisimura Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <sys/buf.h>
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#include <sys/ioctl.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <machine/conf.h>
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#include <dev/tc/tcvar.h>
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#include <machine/cfbreg.h>
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#include <alpha/tc/cfbvar.h>
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#include <dev/rcons/raster.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/fbio.h>
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#include <machine/autoconf.h>
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#include <machine/pte.h>
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int cfbmatch __P((struct device *, struct cfdata *, void *));
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void cfbattach __P((struct device *, struct device *, void *));
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struct cfattach cfb_ca = {
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sizeof(struct cfb_softc), cfbmatch, cfbattach,
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};
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void cfb_getdevconfig __P((tc_addr_t dense_addr, struct cfb_devconfig *dc));
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struct cfb_devconfig cfb_console_dc;
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tc_addr_t cfb_consaddr;
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struct wsdisplay_emulops cfb_emulfuncs = {
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rcons_cursor, /* could use hardware cursor; punt */
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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 cfb_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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&cfb_emulfuncs,
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0, 0
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};
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const struct wsscreen_descr *_cfb_scrlist[] = {
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&cfb_stdscreen,
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/* XXX other formats, graphics screen? */
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};
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struct wsscreen_list cfb_screenlist = {
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sizeof(_cfb_scrlist) / sizeof(struct wsscreen_descr *), _cfb_scrlist
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};
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int cfbioctl __P((void *, u_long, caddr_t, int, struct proc *));
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int cfbmmap __P((void *, off_t, int));
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int cfbintr __P((void *));
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static int cfb_alloc_screen __P((void *, const struct wsscreen_descr *,
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void **, int *, int *, long *));
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static void cfb_free_screen __P((void *, void *));
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static int cfb_show_screen __P((void *, void *, int,
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void (*) (void *, int, int), void *));
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struct wsdisplay_accessops cfb_accessops = {
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cfbioctl,
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cfbmmap,
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cfb_alloc_screen,
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cfb_free_screen,
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cfb_show_screen,
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0 /* load_font */
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};
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int
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cfbmatch(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 tc_attach_args *ta = aux;
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if (strncmp("PMAG-BA ", ta->ta_modname, TC_ROM_LLEN) != 0)
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return (0);
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return (10);
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}
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void
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cfb_getdevconfig(dense_addr, dc)
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tc_addr_t dense_addr;
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struct cfb_devconfig *dc;
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{
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struct raster *rap;
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struct rcons *rcp;
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char *ramdacregp;
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int i;
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dc->dc_vaddr = dense_addr;
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dc->dc_paddr = ALPHA_K0SEG_TO_PHYS(dc->dc_vaddr); /* XXX */
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dc->dc_size = CFB_SIZE;
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ramdacregp = (char *)dc->dc_vaddr + CFB_RAMDAC_OFFSET;
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dc->dc_wid = 1024;
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dc->dc_ht = 864;
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dc->dc_depth = 8; /* 8 plane */
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dc->dc_rowbytes = dc->dc_wid * (dc->dc_depth / 8);
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dc->dc_videobase = dc->dc_vaddr + CFB_FB_OFFSET;
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/* Initialize the RAMDAC/colormap */
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/* start XXX XXX XXX */
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(*(volatile u_int32_t *)(ramdacregp + CFB_RAMDAC_ADDRLOW)) = 0;
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(*(volatile u_int32_t *)(ramdacregp + CFB_RAMDAC_ADDRHIGH)) = 0;
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tc_wmb();
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for (i = 0; i < 256; i++) {
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(*(volatile u_int32_t *)(ramdacregp + CFB_RAMDAC_CMAPDATA)) =
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i ? 0xff : 0;
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tc_wmb();
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(*(volatile u_int32_t *)(ramdacregp + CFB_RAMDAC_CMAPDATA)) =
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i ? 0xff : 0;
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tc_wmb();
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(*(volatile u_int32_t *)(ramdacregp + CFB_RAMDAC_CMAPDATA)) =
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i ? 0xff : 0;
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tc_wmb();
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}
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/* end XXX XXX XXX */
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/* clear the screen */
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for (i = 0; i < dc->dc_ht * dc->dc_rowbytes; i += sizeof(u_int32_t))
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*(u_int32_t *)(dc->dc_videobase + i) = 0x00000000;
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rap = &dc->dc_raster;
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rap->width = dc->dc_wid;
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rap->height = dc->dc_ht;
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rap->depth = 8;
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rap->linelongs = dc->dc_rowbytes / sizeof(u_int32_t);
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rap->pixels = (u_int32_t *)dc->dc_videobase;
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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, 34, 80);
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cfb_stdscreen.nrows = dc->dc_rcons.rc_maxrow;
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cfb_stdscreen.ncols = dc->dc_rcons.rc_maxcol;
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}
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void
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cfbattach(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 cfb_softc *sc = (struct cfb_softc *)self;
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struct tc_attach_args *ta = aux;
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struct wsemuldisplaydev_attach_args waa;
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int console;
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console = (ta->ta_addr == cfb_consaddr);
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if (console) {
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sc->sc_dc = &cfb_console_dc;
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sc->nscreens = 1;
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} else {
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sc->sc_dc = (struct cfb_devconfig *)
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malloc(sizeof(struct cfb_devconfig), M_DEVBUF, M_WAITOK);
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cfb_getdevconfig(ta->ta_addr, sc->sc_dc);
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}
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if (sc->sc_dc->dc_vaddr == NULL) {
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printf(": couldn't map memory space; punt!\n");
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return;
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}
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printf(": %d x %d, %dbpp\n", sc->sc_dc->dc_wid, sc->sc_dc->dc_ht,
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sc->sc_dc->dc_depth);
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/* Establish an interrupt handler, and clear any pending interrupts */
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tc_intr_establish(parent, ta->ta_cookie, TC_IPL_TTY, cfbintr, sc);
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*(volatile u_int32_t *)(sc->sc_dc->dc_vaddr + CFB_IREQCTRL_OFFSET) = 0;
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/* initialize the raster */
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waa.console = console;
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waa.scrdata = &cfb_screenlist;
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waa.accessops = &cfb_accessops;
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waa.accesscookie = sc;
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config_found(self, &waa, wsemuldisplaydevprint);
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}
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int
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cfbioctl(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 cfb_softc *sc = v;
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struct cfb_devconfig *dc = sc->sc_dc;
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switch (cmd) {
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case FBIOGTYPE:
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#define fbt ((struct fbtype *)data)
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fbt->fb_type = FBTYPE_CFB;
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fbt->fb_height = sc->sc_dc->dc_ht;
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fbt->fb_width = sc->sc_dc->dc_wid;
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fbt->fb_depth = sc->sc_dc->dc_depth;
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fbt->fb_cmsize = 256; /* XXX ??? */
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fbt->fb_size = sc->sc_dc->dc_size;
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#undef fbt
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return (0);
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#if 0
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case FBIOPUTCMAP:
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return (*tgar->tgar_set_cmap)(dc, (struct fbcmap *)data);
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case FBIOGETCMAP:
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return (*tgar->tgar_get_cmap)(dc, (struct fbcmap *)data);
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#endif
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case FBIOGATTR:
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return (ENOTTY); /* XXX ? */
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#if 0
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case FBIOSVIDEO:
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if (*(int *)data == FBVIDEO_OFF)
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cfb_blank(sc->sc_dc);
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else
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cfb_unblank(sc->sc_dc);
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return (0);
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#endif
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case FBIOGVIDEO:
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*(int *)data = dc->dc_blanked ? FBVIDEO_OFF : FBVIDEO_ON;
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return (0);
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#if 0
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case FBIOSCURSOR:
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return (*tgar->tgar_set_cursor)(dc, (struct fbcursor *)data);
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case FBIOGCURSOR:
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return (*tgar->tgar_get_cursor)(dc, (struct fbcursor *)data);
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case FBIOSCURPOS:
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return (*tgar->tgar_set_curpos)(dc, (struct fbcurpos *)data);
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case FBIOGCURPOS:
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return (*tgar->tgar_get_curpos)(dc, (struct fbcurpos *)data);
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case FBIOGCURMAX:
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return (*tgar->tgar_get_curmax)(dc, (struct fbcurpos *)data);
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#endif
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}
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return (-1);
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}
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int
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cfbmmap(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 cfb_softc *sc = v;
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if (offset >= CFB_SIZE || offset < 0)
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return (-1);
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return alpha_btop(sc->sc_dc->dc_paddr + offset);
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}
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int
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cfbintr(v)
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void *v;
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{
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struct cfb_softc *sc = v;
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*(volatile u_int32_t *)(sc->sc_dc->dc_vaddr + CFB_IREQCTRL_OFFSET) = 0;
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return (1);
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}
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int
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cfb_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 cfb_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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cfb_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 cfb_softc *sc = v;
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if (sc->sc_dc == &cfb_console_dc)
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panic("cfb_free_screen: console");
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sc->nscreens--;
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}
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int
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cfb_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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cfb_cnattach(addr)
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tc_addr_t addr;
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{
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struct cfb_devconfig *dcp = &cfb_console_dc;
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long defattr;
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cfb_getdevconfig(addr, dcp);
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rcons_alloc_attr(&dcp->dc_rcons, 0, 0, 0, &defattr);
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wsdisplay_cnattach(&cfb_stdscreen, &dcp->dc_rcons,
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0, 0, defattr);
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cfb_consaddr = addr;
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return(0);
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}
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