414 lines
9.9 KiB
C
414 lines
9.9 KiB
C
/* $NetBSD: sfb.c,v 1.6 1996/11/19 05:23:11 cgd 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/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/conf.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 <dev/tc/tcvar.h>
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#include <machine/sfbreg.h>
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#include <alpha/tc/sfbvar.h>
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#if 0
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#include <alpha/tc/bt459reg.h>
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#endif
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#include <dev/rcons/raster.h>
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#include <alpha/wscons/wscons_raster.h>
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#include <alpha/wscons/wsconsvar.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 sfbmatch __P((struct device *, void *, void *));
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void sfbattach __P((struct device *, struct device *, void *));
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int sfbprint __P((void *, const char *));
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struct cfattach sfb_ca = {
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sizeof(struct sfb_softc), sfbmatch, sfbattach,
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};
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struct cfdriver sfb_cd = {
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NULL, "sfb", DV_DULL,
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};
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void sfb_getdevconfig __P((tc_addr_t dense_addr, struct sfb_devconfig *dc));
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struct sfb_devconfig sfb_console_dc;
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struct wscons_emulfuncs sfb_emulfuncs = {
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rcons_cursor, /* could use hardware cursor; punt */
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rcons_putstr,
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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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};
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int sfbioctl __P((void *, u_long, caddr_t, int, struct proc *));
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int sfbmmap __P((void *, off_t, int));
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#if 0
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void sfb_blank __P((struct sfb_devconfig *));
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void sfb_unblank __P((struct sfb_devconfig *));
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#endif
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int
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sfbmatch(parent, match, aux)
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struct device *parent;
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void *match, *aux;
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{
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struct tc_attach_args *ta = aux;
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if (strncmp("PMAGB-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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sfb_getdevconfig(dense_addr, dc)
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tc_addr_t dense_addr;
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struct sfb_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 *regp, *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 = SFB_SIZE;
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regp = (char *)dc->dc_vaddr + SFB_ASIC_OFFSET;
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ramdacregp = (char *)dc->dc_vaddr + SFB_RAMDAC_OFFSET;
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dc->dc_wid =
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(*(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_HSETUP) & 0x1ff) * 4;
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dc->dc_ht =
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(*(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_VSETUP) & 0x7ff);
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switch (*(volatile u_int32_t *)(regp + SFB_ASIC_DEEP)) {
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case 0:
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case 1: /* XXX by the book; wrong? */
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dc->dc_depth = 8; /* 8 plane */
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break;
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case 2:
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dc->dc_depth = 16; /* 16 plane */
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break;
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case 4:
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dc->dc_depth = 32; /* 32 plane */
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break;
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default:
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dc->dc_depth = 8; /* XXX can't happen? */
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break;
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}
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dc->dc_rowbytes = dc->dc_wid * (dc->dc_depth / 8);
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dc->dc_videobase = dc->dc_vaddr + SFB_FB_OFFSET +
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((*(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_BASE)) *
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4096 * (dc->dc_depth / 8));
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(*(volatile u_int32_t *)(regp + SFB_ASIC_MODE)) = 0;
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tc_wmb();
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(*(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_VALID)) = 1;
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tc_wmb();
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/*
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* Set all bits in the pixel mask, to enable writes to all pixels.
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* It seems that the console firmware clears some of them
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* under some circumstances, which causes cute vertical stripes.
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*/
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(*(volatile u_int32_t *)(regp + SFB_ASIC_PIXELMASK)) = 0xffffffff;
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tc_wmb();
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(*(volatile u_int32_t *)(regp + SFB_ASIC_PLANEMASK)) = 0xffffffff;
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tc_wmb();
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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 + SFB_RAMDAC_ADDRLOW)) = 0;
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(*(volatile u_int32_t *)(ramdacregp + SFB_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 + SFB_RAMDAC_CMAPDATA)) =
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i ? 0xff : 0;
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tc_wmb();
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(*(volatile u_int32_t *)(ramdacregp + SFB_RAMDAC_CMAPDATA)) =
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i ? 0xff : 0;
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tc_wmb();
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(*(volatile u_int32_t *)(ramdacregp + SFB_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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/* initialize the raster */
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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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}
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void
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sfbattach(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 sfb_softc *sc = (struct sfb_softc *)self;
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struct tc_attach_args *ta = aux;
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struct wscons_attach_args waa;
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struct wscons_odev_spec *wo;
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int console;
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console = 0; /* XXX */
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if (console)
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sc->sc_dc = &sfb_console_dc;
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else {
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sc->sc_dc = (struct sfb_devconfig *)
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malloc(sizeof(struct sfb_devconfig), M_DEVBUF, M_WAITOK);
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sfb_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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#if 0
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x = (char *)ta->ta_addr + SFB_ASIC_OFFSET;
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printf("%s: Video Base Address = 0x%x\n", self->dv_xname,
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*(u_int32_t *)(x + SFB_ASIC_VIDEO_BASE));
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printf("%s: Horizontal Setup = 0x%x\n", self->dv_xname,
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*(u_int32_t *)(x + SFB_ASIC_VIDEO_HSETUP));
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printf("%s: Vertical Setup = 0x%x\n", self->dv_xname,
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*(u_int32_t *)(x + SFB_ASIC_VIDEO_VSETUP));
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#endif
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waa.waa_isconsole = console;
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wo = &waa.waa_odev_spec;
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wo->wo_emulfuncs = &sfb_emulfuncs;
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wo->wo_emulfuncs_cookie = &sc->sc_dc->dc_rcons;
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wo->wo_ioctl = sfbioctl;
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wo->wo_mmap = sfbmmap;
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wo->wo_miscfuncs_cookie = sc;
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wo->wo_nrows = sc->sc_dc->dc_rcons.rc_maxrow;
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wo->wo_ncols = sc->sc_dc->dc_rcons.rc_maxcol;
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wo->wo_crow = 0;
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wo->wo_ccol = 0;
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config_found(self, &waa, sfbprint);
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}
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int
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sfbprint(aux, pnp)
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void *aux;
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const char *pnp;
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{
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if (pnp)
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printf("wscons at %s", pnp);
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return (UNCONF);
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}
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int
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sfbioctl(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 sfb_softc *sc = v;
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struct sfb_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_SFB;
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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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sfb_blank(sc->sc_dc);
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else
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sfb_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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sfbmmap(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 sfb_softc *sc = v;
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if (offset > SFB_SIZE)
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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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#if 0
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void
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tga_console(bc, pc, bus, device, function)
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bus_chipset_tag_t bc;
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pci_chipset_tag_t pc;
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int bus, device, function;
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{
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struct tga_devconfig *dcp = &tga_console_dc;
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struct wscons_odev_spec wo;
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tga_getdevconfig(bc, pc, pci_make_tag(pc, bus, device, function), dcp);
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/* sanity checks */
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if (dcp->dc_vaddr == NULL)
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panic("tga_console(%d, %d): couldn't map memory space",
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device, function);
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if (dcp->dc_tgaconf == NULL)
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panic("tga_console(%d, %d): unknown board configuration",
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device, function);
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/*
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* Initialize the RAMDAC but DO NOT allocate any private storage.
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* Initialization includes disabling cursor, setting a sane
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* colormap, etc. It will be reinitialized in tgaattach().
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*/
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(*dcp->dc_tgaconf->tgac_ramdac->tgar_init)(dcp, 0);
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wo.wo_ef = &tga_emulfuncs;
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wo.wo_efa = &dcp->dc_rcons;
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wo.wo_nrows = dcp->dc_rcons.rc_maxrow;
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wo.wo_ncols = dcp->dc_rcons.rc_maxcol;
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wo.wo_crow = 0;
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wo.wo_ccol = 0;
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/* ioctl and mmap are unused until real attachment. */
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wscons_attach_console(&wo);
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}
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#endif
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#if 0
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/*
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* Functions to blank and unblank the display.
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*/
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void
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sfb_blank(dc)
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struct sfb_devconfig *dc;
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{
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char *regp = (char *)dc->dc_vaddr + SFB_ASIC_OFFSET;
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if (!dc->dc_blanked) {
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dc->dc_blanked = 1;
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*(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_VALID) = 0;
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tc_wmb();
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}
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}
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void
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sfb_unblank(dc)
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struct sfb_devconfig *dc;
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{
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char *regp = (char *)dc->dc_vaddr + SFB_ASIC_OFFSET;
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if (dc->dc_blanked) {
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dc->dc_blanked = 0;
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*(volatile u_int32_t *)(regp + SFB_ASIC_VIDEO_VALID) = 1;
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tc_wmb();
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}
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}
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#endif
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