605 lines
16 KiB
C
605 lines
16 KiB
C
/* $NetBSD: grfabs_fal.c,v 1.7 1996/10/04 07:27:55 leo Exp $ */
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/*
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* Copyright (c) 1995 Thomas Gerner.
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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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#ifdef FALCON_VIDEO
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/*
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* atari abstract graphics driver: Falcon-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 <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_fal.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 falcon_display_view __P((view_t *));
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static view_t *falcon_alloc_view __P((dmode_t *, dimen_t *, u_char));
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static void falcon_free_view __P((view_t *));
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static void falcon_remove_view __P((view_t *));
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static void falcon_save_view __P((view_t *));
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static int falcon_use_colormap __P((view_t *, colormap_t *));
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static void falcon_detect __P((dmode_t *));
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static struct videl *falcon_getreg __P((u_short));
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/*
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* Our function switch table
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*/
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struct grfabs_sw fal_vid_sw = {
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falcon_display_view,
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falcon_alloc_view,
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falcon_free_view,
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falcon_remove_view,
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falcon_save_view,
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falcon_use_colormap
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};
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struct falcon_hwregs {
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u_short fal_mode; /* falcon mode */
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struct videl *fal_regs; /* videl register values */
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};
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#define vm_mode(dm) (((struct falcon_hwregs*)(dm->data))->fal_mode)
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#define vm_regs(dm) (((struct falcon_hwregs*)(dm->data))->fal_regs)
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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 falcon_hwregs fal_hwregs[] = {
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{ RES_FALAUTO },
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{ RES_FAL_STHIGH },
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{ RES_FAL_STMID },
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{ RES_FAL_STLOW },
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{ RES_FAL_TTLOW },
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{ RES_VGA2 },
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{ RES_VGA4 },
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{ RES_VGA16 },
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{ RES_VGA256 },
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{ RES_DIRECT }
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};
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static dmode_t vid_modes[] = {
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{ {NULL,NULL}, "falauto", { 0, 0 }, 0, NULL, &fal_vid_sw},
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{ {NULL,NULL}, "sthigh", { 640,400 }, 1, NULL, &fal_vid_sw},
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{ {NULL,NULL}, "stmid", { 640,200 }, 2, NULL, &fal_vid_sw},
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{ {NULL,NULL}, "stlow", { 320,200 }, 4, NULL, &fal_vid_sw},
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{ {NULL,NULL}, "ttlow", { 320,480 }, 8, NULL, &fal_vid_sw},
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{ {NULL,NULL}, "vga2", { 640,480 }, 1, NULL, &fal_vid_sw},
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{ {NULL,NULL}, "vga4", { 640,480 }, 2, NULL, &fal_vid_sw},
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{ {NULL,NULL}, "vga16", { 640,480 }, 4, NULL, &fal_vid_sw},
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{ {NULL,NULL}, "vga256", { 640,480 }, 8, NULL, &fal_vid_sw},
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{ {NULL,NULL}, "highcol", { 320,200 }, 16, NULL, &fal_vid_sw},
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{ {NULL,NULL}, NULL, }
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};
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/*
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* The following table contains timing values for the various video modes.
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* I have only a multisync display, therefore I can not say if this values
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* are useful at other displays.
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* Use other video modes at YOUR OWN RISK.
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* THERE IS NO WARRENTY ABOUT THIS VALUES TO WORK WITH A PARTICULAR
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* DISPLAY. -- Thomas
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*/
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static struct videl videlinit[] = {
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{ RES_FALAUTO, /* autodedect */
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
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0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 },
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{ FAL_VGA | RES_FAL_STHIGH, /* sthigh, 640x400, 2 colors */
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0x2, 0x0, 0x28, 0x0, 0x400, 0xc6, 0x8d, 0x15, 0x273, 0x50, 0x96, 0x0,
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0x0, 0x419, 0x3af, 0x8f, 0x8f, 0x3af, 0x415, 0x186, 0x8 },
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#if 0 /* not yet */
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{ FAL_SM | RES_FAL_STHIGH, /* sthigh, 640x400, 2 colors */
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0x0, 0x0, 0x28, 0x2, 0x0, 0x1a, 0x0, 0x0, 0x20f, 0xc, 0x14, 0x0,
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0x0, 0x3e9, 0x0, 0x0, 0x43, 0x363, 0x3e7, 0x80, 0x8 },
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#endif
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{ FAL_VGA | RES_FAL_STMID, /* stmid, 640x200, 4 colors */
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0x2, 0x0, 0x50, 0x1, 0x0, 0x17, 0x12, 0x1, 0x20e, 0xd, 0x11, 0x0,
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0x0, 0x419, 0x3af, 0x8f, 0x8f, 0x3af, 0x415, 0x186, 0x9 },
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{ FAL_VGA | RES_FAL_STLOW, /* stlow, 320x200, 16 colors */
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0x2, 0x0, 0x50, 0x0, 0x0, 0x17, 0x12, 0x1, 0x20e, 0xd, 0x11, 0x0,
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0x0, 0x419, 0x3af, 0x8f, 0x8f, 0x3af, 0x415, 0x186, 0x5 },
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{ FAL_VGA | RES_FAL_TTLOW, /* ttlow, 320x480, 256 colors */
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0x2, 0x0, 0xa0, 0x0, 0x10, 0xc6, 0x8d, 0x15, 0x29a, 0x7b, 0x96, 0x0,
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0x0, 0x419, 0x3ff, 0x3f, 0x3f, 0x3ff, 0x415, 0x186, 0x4 },
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{ FAL_VGA | RES_VGA2, /* vga, 640x480, 2 colors */
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0x2, 0x0, 0x28, 0x0, 0x400, 0xc6, 0x8d, 0x15, 0x273, 0x50, 0x96, 0x0,
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0x0, 0x419, 0x3ff, 0x3f, 0x3f, 0x3ff, 0x415, 0x186, 0x8 },
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{ FAL_VGA | RES_VGA4, /* vga, 640x480, 4 colors */
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0x2, 0x0, 0x50, 0x1, 0x0, 0x17, 0x12, 0x1, 0x20e, 0xd, 0x11, 0x0,
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0x0, 0x419, 0x3ff, 0x3f, 0x3f, 0x3ff, 0x415, 0x186, 0x8 },
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{ FAL_VGA | RES_VGA16, /* vga, 640x480, 16 colors */
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0x2, 0x0, 0xa0, 0x1, 0x0, 0xc6, 0x8d, 0x15, 0x2a3, 0x7c, 0x96, 0x0,
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0x0, 0x419, 0x3ff, 0x3f, 0x3f, 0x3ff, 0x415, 0x186, 0x8 },
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{ FAL_VGA | RES_VGA256, /* vga, 640x480, 256 colors */
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0x2, 0x0, 0x140, 0x1, 0x10, 0xc6, 0x8d, 0x15, 0x2ab, 0x84, 0x96, 0x0,
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0x0, 0x419, 0x3ff, 0x3f, 0x3f, 0x3ff, 0x415, 0x186, 0x8 },
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{ FAL_VGA | RES_DIRECT, /* direct video, 320x200, 65536 colors */
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0x2, 0x0, 0x140, 0x0, 0x100, 0xc6, 0x8d, 0x15, 0x2ac, 0x91, 0x96, 0x0,
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0x0, 0x419, 0x3ff, 0x3f, 0x3f, 0x3ff, 0x415, 0x186, 0x4 },
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{ 0xffff } /* end of list */
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};
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static u_short mon_type;
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/*
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* XXX: called from ite console init routine.
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* Initialize list of posible video modes.
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*/
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void
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falcon_probe_video(modelp)
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MODES *modelp;
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{
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dmode_t *dm;
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struct videl *vregs;
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int i;
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mon_type = *(volatile unsigned char *)(AD_FAL_MON_TYPE);
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mon_type = (mon_type & 0xc0) << 2;
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/*
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* get all posible modes
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*/
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for (i = 0; (dm = &vid_modes[i])->name != NULL; i++) {
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dm->data = (void *)&fal_hwregs[i];
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if (vm_mode(dm) == RES_FALAUTO) {
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vm_regs(dm) = falcon_getreg(RES_FALAUTO);
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falcon_detect(dm);
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LIST_INSERT_HEAD(modelp, dm, link);
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} else {
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vregs = falcon_getreg(vm_mode(dm) | mon_type);
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if (vregs) {
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vm_regs(dm) = vregs;
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LIST_INSERT_HEAD(modelp, dm, link);
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}
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}
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}
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/*
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* This seems to prevent bordered screens.
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*/
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for (i=0; i < 16; i++)
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VIDEO->vd_fal_rgb[i] = CM_L2FAL(gra_def_color16[i]);
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}
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static struct videl *
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falcon_getreg(mode)
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u_short mode;
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{
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int i;
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struct videl *vregs;
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for (i = 0; (vregs = &videlinit[i])->video_mode != 0xffff; i++)
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if ((vregs->video_mode) == mode)
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return vregs;
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return NULL; /* mode not found */
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}
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static void
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falcon_detect(dm)
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dmode_t *dm;
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{
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u_short falshift, stshift;
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struct videl *vregs = vm_regs(dm);
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/*
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* First get the the videl register values
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*/
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vregs->vd_syncmode = VIDEO->vd_sync;
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vregs->vd_line_wide = VIDEO->vd_line_wide;
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vregs->vd_vert_wrap = VIDEO->vd_vert_wrap;
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vregs->vd_st_res = VIDEO->vd_st_res;
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vregs->vd_fal_res = VIDEO->vd_fal_res;
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vregs->vd_h_hold_tim = VIDEO->vd_h_hold_tim;
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vregs->vd_h_bord_beg = VIDEO->vd_h_bord_beg;
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vregs->vd_h_bord_end = VIDEO->vd_h_bord_end;
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vregs->vd_h_dis_beg = VIDEO->vd_h_dis_beg;
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vregs->vd_h_dis_end = VIDEO->vd_h_dis_end;
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vregs->vd_h_ss = VIDEO->vd_h_ss;
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vregs->vd_h_fs = VIDEO->vd_h_fs;
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vregs->vd_h_hh = VIDEO->vd_h_hh;
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vregs->vd_v_freq_tim = VIDEO->vd_v_freq_tim;
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vregs->vd_v_bord_beg = VIDEO->vd_v_bord_beg;
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vregs->vd_v_bord_end = VIDEO->vd_v_bord_end;
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vregs->vd_v_dis_beg = VIDEO->vd_v_dis_beg;
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vregs->vd_v_dis_end = VIDEO->vd_v_dis_end;
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vregs->vd_v_ss = VIDEO->vd_v_ss;
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vregs->vd_fal_ctrl = VIDEO->vd_fal_ctrl;
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vregs->vd_fal_mode = VIDEO->vd_fal_mode;
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/*
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* Calculate the depth of the screen
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*/
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falshift = vregs->vd_fal_res;
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stshift = vregs->vd_st_res;
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if (falshift & 0x400) /* 2 color */
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dm->depth = 1;
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else if (falshift & 0x100) /* high color, direct */
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dm->depth = 16;
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else if (falshift & 0x10) /* 256 color */
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dm->depth = 8;
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else if (stshift == 0) /* 16 color */
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dm->depth = 4;
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else if (stshift == 1) /* 4 color */
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dm->depth = 2;
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else dm->depth = 1; /* 2 color */
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/*
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* Now calculate the screen hight
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*/
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dm->size.height = vregs->vd_v_dis_end - vregs->vd_v_dis_beg;
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if (!((vregs->vd_fal_mode & 0x2) >> 1)) /* if not interlaced */
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dm->size.height >>=1;
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if (vregs->vd_fal_mode & 0x1) /* if doublescan */
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dm->size.height >>=1;
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/*
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* And the width
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*/
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dm->size.width = vregs->vd_vert_wrap * 16 / dm->depth;
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}
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static void
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falcon_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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struct videl *vregs = vm_regs(v->mode);
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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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falcon_use_colormap(v, v->colormap);
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/* XXX: should use vbl for this */
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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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* Write to videl registers only on VGA displays
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* This is only a hack. Must be fixed soon. XXX -- Thomas
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*/
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if(mon_type != FAL_VGA) return;
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VIDEO->vd_v_freq_tim = vregs->vd_v_freq_tim;
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VIDEO->vd_v_ss = vregs->vd_v_ss;
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VIDEO->vd_v_bord_beg = vregs->vd_v_bord_beg;
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VIDEO->vd_v_bord_end = vregs->vd_v_bord_end;
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VIDEO->vd_v_dis_beg = vregs->vd_v_dis_beg;
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VIDEO->vd_v_dis_end = vregs->vd_v_dis_end;
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VIDEO->vd_h_hold_tim = vregs->vd_h_hold_tim;
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VIDEO->vd_h_ss = vregs->vd_h_ss;
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VIDEO->vd_h_bord_beg = vregs->vd_h_bord_beg;
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VIDEO->vd_h_bord_end = vregs->vd_h_bord_end;
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VIDEO->vd_h_dis_beg = vregs->vd_h_dis_beg;
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VIDEO->vd_h_dis_end = vregs->vd_h_dis_end;
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#if 0 /* This seems not to be necessary -- Thomas */
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VIDEO->vd_h_fs = vregs->vd_h_fs;
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VIDEO->vd_h_hh = vregs->vd_h_hh;
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#endif
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VIDEO->vd_sync = vregs->vd_syncmode;
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VIDEO->vd_fal_res = 0;
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if (dm->depth == 2)
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VIDEO->vd_st_res = vregs->vd_st_res;
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else {
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VIDEO->vd_st_res = 0;
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VIDEO->vd_fal_res = vregs->vd_fal_res;
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}
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VIDEO->vd_vert_wrap = vregs->vd_vert_wrap;
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VIDEO->vd_line_wide = vregs->vd_line_wide;
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VIDEO->vd_fal_ctrl = vregs->vd_fal_ctrl;
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VIDEO->vd_fal_mode = vregs->vd_fal_mode;
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}
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static void
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falcon_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\n"); /* 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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falcon_save_view(v)
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view_t *v;
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{
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}
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static void
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falcon_free_view(v)
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view_t *v;
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{
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if (v) {
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falcon_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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falcon_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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volatile u_long *fcreg;
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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 get the colormap addresses an calculate
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|
* howmany colors are in it.
|
|
*/
|
|
if (dm->depth == 16) /* direct color, no colormap;
|
|
but also not (yet) supported */
|
|
return(0);
|
|
fcreg = &VIDEO->vd_fal_rgb[0];
|
|
creg = &VIDEO->vd_st_rgb[0];
|
|
ncreg = 1 << dm->depth;
|
|
|
|
/* If first entry specified beyond capabilities -> error */
|
|
if (cm->first >= ncreg)
|
|
return (EINVAL);
|
|
|
|
/*
|
|
* A little tricky, the actual colormap pointer will be NULL
|
|
* when view is not displaying, valid otherwise.
|
|
*/
|
|
if (v->flags & VF_DISPLAY)
|
|
creg = &creg[cm->first];
|
|
else creg = NULL;
|
|
|
|
vcreg = &vcm->entry[cm->first];
|
|
ncreg -= cm->first;
|
|
if (cm->size > ncreg)
|
|
return (EINVAL);
|
|
ncreg = cm->size;
|
|
|
|
for (i = 0, src = cm->entry; i < ncreg; i++, vcreg++) {
|
|
*vcreg = *src++;
|
|
|
|
/*
|
|
* If displaying, also update actual color register.
|
|
*/
|
|
if (creg != NULL) {
|
|
*fcreg++ = CM_L2FAL(*vcreg);
|
|
if (i < 16 )
|
|
*creg++ = CM_L2ST(*vcreg);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static view_t *
|
|
falcon_alloc_view(mode, dim, depth)
|
|
dmode_t *mode;
|
|
dimen_t *dim;
|
|
u_char depth;
|
|
{
|
|
view_t *v;
|
|
bmap_t *bm;
|
|
|
|
if (!atari_realconfig)
|
|
v = &gra_con_view;
|
|
else v = malloc(sizeof(*v), M_DEVBUF, M_NOWAIT);
|
|
if (v == NULL)
|
|
return(NULL);
|
|
|
|
bm = alloc_bitmap(mode->size.width, mode->size.height, mode->depth);
|
|
if (bm) {
|
|
box_t box;
|
|
|
|
v->colormap = alloc_colormap(mode);
|
|
if (v->colormap) {
|
|
INIT_BOX(&box,0,0,mode->size.width,mode->size.height);
|
|
init_view(v, bm, mode, &box);
|
|
return(v);
|
|
}
|
|
free_bitmap(bm);
|
|
}
|
|
if (v != &gra_con_view)
|
|
free(v, M_DEVBUF);
|
|
return (NULL);
|
|
}
|
|
|
|
static void
|
|
init_view(v, bm, mode, dbox)
|
|
view_t *v;
|
|
bmap_t *bm;
|
|
dmode_t *mode;
|
|
box_t *dbox;
|
|
{
|
|
v->bitmap = bm;
|
|
v->mode = mode;
|
|
v->flags = 0;
|
|
bcopy(dbox, &v->display, sizeof(box_t));
|
|
}
|
|
|
|
/* bitmap functions */
|
|
|
|
static bmap_t *
|
|
alloc_bitmap(width, height, depth)
|
|
u_long width, height;
|
|
u_char depth;
|
|
{
|
|
u_long total_size, bm_size;
|
|
void *hw_address;
|
|
bmap_t *bm;
|
|
|
|
/*
|
|
* Sigh, it seems for mapping to work we need the bitplane data to
|
|
* 1: be aligned on a page boundry.
|
|
* 2: be n pages large.
|
|
*
|
|
* why? because the user gets a page aligned address, if this is before
|
|
* your allocation, too bad. Also it seems that the mapping routines
|
|
* do not watch to closely to the allowable length. so if you go over
|
|
* n pages by less than another page, the user gets to write all over
|
|
* the entire page. Since you did not allocate up to a page boundry
|
|
* (or more) the user writes into someone elses memory. -ch
|
|
*/
|
|
bm_size = atari_round_page((width * height * depth) / NBBY);
|
|
total_size = bm_size + sizeof(bmap_t) + NBPG;
|
|
|
|
if ((bm = (bmap_t*)alloc_stmem(total_size, &hw_address)) == NULL)
|
|
return(NULL);
|
|
|
|
bm->plane = (u_char*)bm + sizeof(bmap_t);
|
|
bm->plane = (u_char*)atari_round_page(bm->plane);
|
|
bm->hw_address = (u_char*)hw_address + sizeof(bmap_t);
|
|
bm->hw_address = (u_char*)atari_round_page(bm->hw_address);
|
|
bm->bytes_per_row = (width * depth) / NBBY;
|
|
bm->rows = height;
|
|
bm->depth = depth;
|
|
bm->regs = bm->hw_regs = NULL;
|
|
bm->reg_size = 0;
|
|
|
|
bzero(bm->plane, bm_size);
|
|
return (bm);
|
|
}
|
|
|
|
static void
|
|
free_bitmap(bm)
|
|
bmap_t *bm;
|
|
{
|
|
if (bm)
|
|
free_stmem(bm);
|
|
}
|
|
|
|
static colormap_t *
|
|
alloc_colormap(dm)
|
|
dmode_t *dm;
|
|
{
|
|
int nentries, i;
|
|
colormap_t *cm;
|
|
u_char type = CM_COLOR;
|
|
|
|
if (dm->depth == 16) /* direct color, no colormap;
|
|
not (yet) supported */
|
|
nentries = 0;
|
|
else
|
|
nentries = 1 << dm->depth;
|
|
|
|
if (!atari_realconfig) {
|
|
cm = &gra_con_cmap;
|
|
cm->entry = gra_con_colors;
|
|
}
|
|
else {
|
|
int size;
|
|
|
|
size = sizeof(*cm) + (nentries * sizeof(cm->entry[0]));
|
|
cm = malloc(size, M_DEVBUF, M_NOWAIT);
|
|
if (cm == NULL)
|
|
return(NULL);
|
|
cm->entry = (long *)&cm[1];
|
|
|
|
}
|
|
|
|
if ((cm->type = type) == CM_COLOR)
|
|
cm->red_mask = cm->green_mask = cm->blue_mask = 0x3f;
|
|
|
|
cm->first = 0;
|
|
cm->size = nentries;
|
|
|
|
for (i = 0; i < nentries; i++)
|
|
cm->entry[i] = gra_def_color16[i % 16];
|
|
return (cm);
|
|
}
|
|
#endif /* FALCON_VIDEO */
|