278 lines
6.8 KiB
C
278 lines
6.8 KiB
C
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/* $NetBSD: gendiofb.c,v 1.1 2011/02/12 05:08:40 tsutsui Exp $ */
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/* $OpenBSD: tvrx.c,v 1.1 2006/04/14 21:05:43 miod Exp $ */
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/*
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* Copyright (c) 2006, Miodrag Vallat.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*
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* dumb graphics routines for frame buffer on HP362 and HP382 based on tvrx.c
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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/conf.h>
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#include <sys/device.h>
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#include <sys/proc.h>
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#include <sys/ioctl.h>
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#include <sys/bus.h>
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#include <sys/cpu.h>
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#include <machine/autoconf.h>
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#include <hp300/dev/dioreg.h>
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#include <hp300/dev/diovar.h>
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#include <hp300/dev/diodevs.h>
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#include <dev/cons.h>
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#include <dev/wscons/wsconsio.h>
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#include <dev/wscons/wsdisplayvar.h>
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#include <dev/rasops/rasops.h>
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#include <hp300/dev/diofbreg.h>
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#include <hp300/dev/diofbvar.h>
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struct gendiofb_softc {
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device_t sc_dev;
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struct diofb *sc_fb;
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struct diofb sc_fb_store;
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int sc_scode;
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};
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static int gendiofb_match(device_t, cfdata_t, void *);
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static void gendiofb_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(gendiofb, sizeof(struct gendiofb_softc),
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gendiofb_match, gendiofb_attach, NULL, NULL);
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static int gendiofb_reset(struct diofb *, int, struct diofbreg *);
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static int gendiofb_ioctl(void *, void *, u_long, void *, int, struct lwp *);
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static struct wsdisplay_accessops gendiofb_accessops = {
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gendiofb_ioctl,
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diofb_mmap,
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diofb_alloc_screen,
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diofb_free_screen,
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diofb_show_screen,
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NULL, /* load_font */
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};
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/*
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* Attachment glue
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*/
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static int
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gendiofb_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct dio_attach_args *da = aux;
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if (da->da_id == DIO_DEVICE_ID_FRAMEBUFFER) {
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switch (da->da_secid) {
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case DIO_DEVICE_SECID_A147xVGA:
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case DIO_DEVICE_SECID_A1474MID:
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return 1;
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}
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}
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return 0;
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}
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static void
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gendiofb_attach(device_t parent, device_t self, void *aux)
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{
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struct gendiofb_softc *sc = device_private(self);
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struct dio_attach_args *da = aux;
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bus_space_handle_t bsh;
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struct diofbreg *fbr;
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bus_size_t size;
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sc->sc_dev = self;
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sc->sc_scode = da->da_scode;
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if (sc->sc_scode == conscode) {
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fbr = (struct diofbreg *)conaddr; /* already mapped */
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sc->sc_fb = &diofb_cn;
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} else {
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sc->sc_fb = &sc->sc_fb_store;
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size = da->da_size;
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if (size > DIOII_DEVSIZE) /* XXX */
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size = DIOII_DEVSIZE;
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if (bus_space_map(da->da_bst, da->da_addr, size, 0,
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&bsh)) {
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aprint_error(": can't map framebuffer\n");
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return;
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}
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fbr = bus_space_vaddr(da->da_bst, bsh);
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if (gendiofb_reset(sc->sc_fb, sc->sc_scode, fbr) != 0) {
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aprint_error(": failed to reset\n");
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return;
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}
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}
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diofb_end_attach(self, &gendiofb_accessops, sc->sc_fb,
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sc->sc_scode == conscode, NULL);
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}
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/*
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* Initialize hardware and display routines.
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*/
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static int
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gendiofb_reset(struct diofb *fb, int scode, struct diofbreg *fbr)
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{
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int rc;
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struct rasops_info *ri = &fb->ri;
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if ((rc = diofb_fbinquire(fb, scode, fbr)) != 0)
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return (rc);
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/*
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* We rely on the PROM to initialize the frame buffer in the mode
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* we expect it: cleared, overlay plane enabled and accessible
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* at the beginning of the video memory.
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*
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* This is NOT the mode we would end up by simply resetting the
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* board.
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*/
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ri->ri_depth = 8;
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ri->ri_stride = (fb->fbwidth * ri->ri_depth) / 8;
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ri->ri_flg = RI_CENTER | RI_FULLCLEAR;
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if (fb == &diofb_cn)
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ri->ri_flg |= RI_NO_AUTO; /* XXX */
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ri->ri_bits = fb->fbkva;
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ri->ri_width = fb->dwidth;
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ri->ri_height = fb->dheight;
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ri->ri_hw = fb;
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/*
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* Ask for an unholy big display, rasops will trim this to more
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* reasonable values.
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*/
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rasops_init(ri, 160, 160);
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ri->ri_flg |= RI_FORCEMONO; /* no colormap */
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diofb_resetcmap(fb);
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fb->wsd.name = fb->wsdname;
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fb->wsd.ncols = ri->ri_cols;
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fb->wsd.nrows = ri->ri_rows;
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fb->wsd.textops = &ri->ri_ops;
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fb->wsd.fontwidth = ri->ri_font->fontwidth;
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fb->wsd.fontheight = ri->ri_font->fontheight;
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fb->wsd.capabilities = ri->ri_caps;
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strlcpy(fb->wsdname, "std", sizeof(fb->wsdname));
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return 0;
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}
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static int
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gendiofb_ioctl(void *v, void *vs, u_long cmd, void *data, int flags,
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struct lwp *l)
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{
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struct diofb *fb = v;
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struct wsdisplay_fbinfo *wdf;
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switch (cmd) {
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case WSDISPLAYIO_GTYPE:
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*(u_int *)data = WSDISPLAY_TYPE_UNKNOWN;
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return 0;
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case WSDISPLAYIO_SMODE:
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fb->mapmode = *(u_int *)data;
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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->width = fb->ri.ri_width;
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wdf->height = fb->ri.ri_height;
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wdf->depth = fb->ri.ri_depth;
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wdf->cmsize = 0;
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return 0;
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case WSDISPLAYIO_LINEBYTES:
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*(u_int *)data = fb->ri.ri_stride;
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return 0;
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case WSDISPLAYIO_GETCMAP:
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case WSDISPLAYIO_PUTCMAP:
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/* until color support is implemented */
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return EPASSTHROUGH;
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case WSDISPLAYIO_GVIDEO:
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case WSDISPLAYIO_SVIDEO:
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/* unsupported */
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return EPASSTHROUGH;
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}
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return EPASSTHROUGH;
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}
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/*
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* Console attachment
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*/
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int
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gendiofbcnattach(bus_space_tag_t bst, bus_addr_t addr, int scode)
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{
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bus_space_handle_t bsh;
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void *va;
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struct diofbreg *fbr;
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struct diofb *fb = &diofb_cn;
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bus_size_t size;
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if (bus_space_map(bst, addr, PAGE_SIZE, 0, &bsh))
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return 1;
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va = bus_space_vaddr(bst, bsh);
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fbr = va;
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if (badaddr(va) ||
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fbr->id != GRFHWID ||
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(fbr->fbid != DIO_DEVICE_SECID_A1474MID &&
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fbr->fbid != DIO_DEVICE_SECID_A147xVGA)) {
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bus_space_unmap(bst, bsh, PAGE_SIZE);
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return 1;
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}
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size = DIO_SIZE(scode, va);
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if (size > DIOII_DEVSIZE) /* XXX */
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size = DIOII_DEVSIZE;
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bus_space_unmap(bst, bsh, PAGE_SIZE);
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if (bus_space_map(bst, addr, size, 0, &bsh))
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return 1;
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va = bus_space_vaddr(bst, bsh);
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/*
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* Initialize the framebuffer hardware.
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*/
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conscode = scode;
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conaddr = va;
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gendiofb_reset(fb, conscode, (struct diofbreg *)conaddr);
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/*
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* Initialize the terminal emulator.
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*/
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diofb_cnattach(fb);
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return 0;
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}
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