444 lines
10 KiB
C
444 lines
10 KiB
C
/* $NetBSD: grfabs_tt.c,v 1.15 2005/12/11 12:16:54 christos Exp $ */
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/*
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* Copyright (c) 1995 Leo Weppelman.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Leo Weppelman.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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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 WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: grfabs_tt.c,v 1.15 2005/12/11 12:16:54 christos Exp $");
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#ifdef TT_VIDEO
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/*
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* atari abstract graphics driver: TT-interface
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*/
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/malloc.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <uvm/uvm_extern.h>
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#include <machine/iomap.h>
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#include <machine/video.h>
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#include <machine/mfp.h>
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#include <atari/atari/device.h>
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#include <atari/atari/stalloc.h>
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#include <atari/dev/grfabs_reg.h>
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#include <atari/dev/grfabs_tt.h>
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/*
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* Function decls
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*/
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static void init_view __P((view_t *, bmap_t *, dmode_t *, box_t *));
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static bmap_t *alloc_bitmap __P((u_long, u_long, u_char));
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static colormap_t *alloc_colormap __P((dmode_t *));
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static void free_bitmap __P((bmap_t *));
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static void tt_display_view __P((view_t *));
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static view_t *tt_alloc_view __P((dmode_t *, dimen_t *, u_char));
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static void tt_free_view __P((view_t *));
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static void tt_remove_view __P((view_t *));
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static void tt_save_view __P((view_t *));
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static int tt_use_colormap __P((view_t *, colormap_t *));
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/*
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* Our function switch table
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*/
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struct grfabs_sw tt_vid_sw = {
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tt_display_view,
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tt_alloc_view,
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tt_free_view,
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tt_remove_view,
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tt_save_view,
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tt_use_colormap
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};
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struct tt_hwregs {
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u_short tt_reg; /* video mode-register TT */
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};
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#define vm_reg(dm) (((struct tt_hwregs*)(dm->data))->tt_reg)
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/*
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* Note that the order of this table *must* match the order of
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* the table below!
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*/
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static struct tt_hwregs tt_hwregs[] = {
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{ RES_STHIGH },
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{ RES_TTHIGH },
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{ RES_STMID },
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{ RES_STLOW },
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{ RES_TTMID },
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{ RES_TTLOW }
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};
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static dmode_t vid_modes[] = {
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{ { NULL, NULL }, "sthigh", { 640, 400 }, 1, NULL, &tt_vid_sw },
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{ { NULL, NULL }, "tthigh", { 1280, 960 }, 1, NULL, &tt_vid_sw },
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{ { NULL, NULL }, "stmid", { 640, 200 }, 2, NULL, &tt_vid_sw },
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{ { NULL, NULL }, "stlow", { 320, 200 }, 4, NULL, &tt_vid_sw },
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{ { NULL, NULL }, "ttmid", { 640, 480 }, 4, NULL, &tt_vid_sw },
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{ { NULL, NULL }, "ttlow", { 320, 480 }, 8, NULL, &tt_vid_sw },
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{ { NULL, NULL }, NULL, }
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};
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/*
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* XXX: called from ite console init routine.
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* Initialize list of possible video modes.
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*/
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void
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tt_probe_video(modelp)
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MODES *modelp;
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{
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dmode_t *dm;
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int i;
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int has_mono;
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/*
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* First find out what kind of monitor is attached. DMA-sound
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* should be off because the 'sound-done' and 'monochrome-detect'
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* are xor-ed together. I think that shutting it down here is the
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* wrong place.
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*/
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has_mono = (MFP->mf_gpip & IA_MONO) == 0;
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for (i = 0; (dm = &vid_modes[i])->name != NULL; i++) {
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dm->data = (void *)&tt_hwregs[i];
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if (has_mono && (vm_reg(dm) != RES_TTHIGH))
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continue;
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if (!has_mono && (vm_reg(dm) == RES_TTHIGH))
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continue;
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LIST_INSERT_HEAD(modelp, dm, link);
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}
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for (i=0; i < 16; i++)
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VIDEO->vd_tt_rgb[i] = CM_L2TT(gra_def_color16[i]);
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}
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static void
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tt_display_view(v)
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view_t *v;
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{
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dmode_t *dm = v->mode;
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bmap_t *bm = v->bitmap;
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if (dm->current_view) {
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/*
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* Mark current view for this mode as no longer displayed
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*/
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dm->current_view->flags &= ~VF_DISPLAY;
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}
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dm->current_view = v;
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v->flags |= VF_DISPLAY;
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tt_use_colormap(v, v->colormap);
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/* XXX: should use vbl for this */
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VIDEO->vd_tt_res = vm_reg(dm);
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VIDEO->vd_raml = (u_long)bm->hw_address & 0xff;
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VIDEO->vd_ramm = ((u_long)bm->hw_address >> 8) & 0xff;
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VIDEO->vd_ramh = ((u_long)bm->hw_address >> 16) & 0xff;
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}
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void
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tt_remove_view(v)
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view_t *v;
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{
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dmode_t *mode = v->mode;
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if (mode->current_view == v) {
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#if 0
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if (v->flags & VF_DISPLAY)
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panic("Cannot shutdown display"); /* XXX */
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#endif
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mode->current_view = NULL;
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}
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v->flags &= ~VF_DISPLAY;
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}
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void
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tt_save_view(v)
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view_t *v;
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{
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}
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void
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tt_free_view(v)
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view_t *v;
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{
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if(v) {
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tt_remove_view(v);
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if (v->colormap != &gra_con_cmap)
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free(v->colormap, M_DEVBUF);
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free_bitmap(v->bitmap);
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if (v != &gra_con_view)
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free(v, M_DEVBUF);
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}
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}
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static int
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tt_use_colormap(v, cm)
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view_t *v;
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colormap_t *cm;
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{
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dmode_t *dm;
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volatile u_short *creg;
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u_long *src;
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colormap_t *vcm;
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u_long *vcreg;
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u_short ncreg;
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int i;
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dm = v->mode;
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vcm = v->colormap;
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/*
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* I guess it seems reasonable to require the maps to be
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* of the same type...
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*/
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if (cm->type != vcm->type)
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return(EINVAL);
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/*
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* First figure out where the actual colormap resides and
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* howmany colors are in it.
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*/
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switch (vm_reg(dm)) {
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case RES_STLOW:
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creg = &VIDEO->vd_tt_rgb[0];
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ncreg = 16;
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break;
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case RES_STMID:
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creg = &VIDEO->vd_tt_rgb[0];
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ncreg = 4;
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break;
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case RES_STHIGH:
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creg = &VIDEO->vd_tt_rgb[254];
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ncreg = 2;
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break;
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case RES_TTLOW:
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creg = &VIDEO->vd_tt_rgb[0];
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ncreg = 256;
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break;
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case RES_TTMID:
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creg = &VIDEO->vd_tt_rgb[0];
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ncreg = 16;
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break;
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case RES_TTHIGH:
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return(0); /* No colors */
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default:
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panic("grf_tt:use_colormap: wrong mode!?");
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}
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/* If first entry specified beyond capabilities -> error */
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if (cm->first >= ncreg)
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return(EINVAL);
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/*
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* A little tricky, the actual colormap pointer will be NULL
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* when view is not displaying, valid otherwise.
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*/
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if (v->flags & VF_DISPLAY)
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creg = &creg[cm->first];
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else creg = NULL;
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vcreg = &vcm->entry[cm->first];
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ncreg -= cm->first;
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if (cm->size > ncreg)
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return(EINVAL);
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ncreg = cm->size;
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for (i = 0, src = cm->entry; i < ncreg; i++, vcreg++) {
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*vcreg = *src++;
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/*
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* If displaying, also update actual color registers.
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*/
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if (creg != NULL)
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*creg++ = CM_L2TT(*vcreg);
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}
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return (0);
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}
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static view_t *
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tt_alloc_view(mode, dim, depth)
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dmode_t *mode;
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dimen_t *dim;
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u_char depth;
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{
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view_t *v;
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bmap_t *bm;
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if (!atari_realconfig)
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v = &gra_con_view;
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else v = malloc(sizeof(*v), M_DEVBUF, M_NOWAIT);
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if(v == NULL)
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return (NULL);
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bm = alloc_bitmap(mode->size.width, mode->size.height, mode->depth);
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if (bm) {
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box_t box;
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v->colormap = alloc_colormap(mode);
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if (v->colormap) {
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INIT_BOX(&box,0,0,mode->size.width,mode->size.height);
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init_view(v, bm, mode, &box);
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return (v);
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}
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free_bitmap(bm);
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}
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if (v != &gra_con_view)
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free(v, M_DEVBUF);
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return (NULL);
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}
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static void
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init_view(v, bm, mode, dbox)
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view_t *v;
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bmap_t *bm;
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dmode_t *mode;
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box_t *dbox;
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{
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v->bitmap = bm;
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v->mode = mode;
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v->flags = 0;
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bcopy(dbox, &v->display, sizeof(box_t));
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}
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/* bitmap functions */
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static bmap_t *
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alloc_bitmap(width, height, depth)
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u_long width, height;
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u_char depth;
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{
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u_long total_size, bm_size;
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void *hw_address;
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bmap_t *bm;
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/*
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* Sigh, it seems for mapping to work we need the bitplane data to
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* 1: be aligned on a page boundry.
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* 2: be n pages large.
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*
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* why? because the user gets a page aligned address, if this is before
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* your allocation, too bad. Also it seems that the mapping routines
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* do not watch to closely to the allowable length. so if you go over
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* n pages by less than another page, the user gets to write all over
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* the entire page. Since you did not allocate up to a page boundry
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* (or more) the user writes into someone elses memory. -ch
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*/
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bm_size = m68k_round_page((width * height * depth) / NBBY);
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total_size = bm_size + sizeof(bmap_t) + PAGE_SIZE;
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if ((bm = (bmap_t*)alloc_stmem(total_size, &hw_address)) == NULL)
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return(NULL);
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bm->plane = (u_char*)bm + sizeof(bmap_t);
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bm->plane = (u_char*)m68k_round_page(bm->plane);
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bm->hw_address = (u_char*)hw_address + sizeof(bmap_t);
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bm->hw_address = (u_char*)m68k_round_page(bm->hw_address);
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bm->bytes_per_row = (width * depth) / NBBY;
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bm->rows = height;
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bm->depth = depth;
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bm->regs = NULL;
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bm->hw_regs = NULL;
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bm->reg_size = 0;
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bm->phys_mappable = (depth * width * height) / NBBY;
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bm->lin_base = 0;
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bm->vga_address = NULL;
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bm->vga_mappable = 0;
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bm->vga_base = 0;
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bzero(bm->plane, bm_size);
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return (bm);
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}
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static void
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free_bitmap(bm)
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bmap_t *bm;
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{
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if (bm)
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free_stmem(bm);
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}
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static colormap_t *
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alloc_colormap(dm)
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dmode_t *dm;
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{
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int nentries, i;
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colormap_t *cm;
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u_char type = CM_COLOR;
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switch (vm_reg(dm)) {
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case RES_STLOW:
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case RES_TTMID:
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nentries = 16;
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break;
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case RES_STMID:
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nentries = 4;
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break;
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case RES_STHIGH:
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nentries = 2;
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break;
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case RES_TTLOW:
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nentries = 256;
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break;
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case RES_TTHIGH:
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type = CM_MONO;
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nentries = 0;
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break;
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default:
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panic("grf_tt:alloc_colormap: wrong mode!?");
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}
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if (!atari_realconfig) {
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cm = &gra_con_cmap;
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cm->entry = gra_con_colors;
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}
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else {
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int size;
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size = sizeof(*cm) + (nentries * sizeof(cm->entry[0]));
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cm = malloc(size, M_DEVBUF, M_NOWAIT);
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if (cm == NULL)
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return (NULL);
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cm->entry = (long *)&cm[1];
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}
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if ((cm->type = type) == CM_COLOR)
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cm->red_mask = cm->green_mask = cm->blue_mask = 0xf;
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cm->first = 0;
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cm->size = nentries;
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for (i = 0; i < nentries; i++)
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cm->entry[i] = gra_def_color16[i % 16];
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return (cm);
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}
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#endif /* TT_VIDEO */
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