NetBSD/sys/arch/amiga/dev/grf_ul.c

997 lines
23 KiB
C

/* $NetBSD: grf_ul.c,v 1.22 1996/10/13 03:07:07 christos Exp $ */
#define UL_DEBUG
/*
* Copyright (c) 1995 Ignatios Souvatzis
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Ignatios Souvatzis for
* the NetBSD project.
* 4. The name of the authors may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "grful.h"
#if NGRFUL > 0
/* Graphics routines for the University of Lowell A2410 board,
using the TMS34010 processor. */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/syslog.h>
#include <machine/cpu.h>
#include <amiga/amiga/device.h>
#include <amiga/amiga/isr.h>
#include <amiga/dev/zbusvar.h>
#include <amiga/dev/grfioctl.h>
#include <amiga/dev/grfvar.h>
#include <amiga/dev/grf_ulreg.h>
extern u_int16_t tmscode[];
int ul_ioctl __P((struct grf_softc *, u_long, void *, dev_t));
int ul_getcmap __P((struct grf_softc *, struct grf_colormap *, dev_t));
int ul_putcmap __P((struct grf_softc *, struct grf_colormap *, dev_t));
int ul_bitblt __P((struct grf_softc *, struct grf_bitblt *, dev_t));
int ul_blank __P((struct grf_softc *, int *, dev_t));
static int ulisr __P((void *));
int ulowell_alive __P((struct grfvideo_mode *));
static void ul_load_code __P((struct grf_softc *));
static int ul_load_mon __P((struct grf_softc *, struct grfvideo_mode *));
static int ul_getvmode __P((struct grf_softc *, struct grfvideo_mode *));
static int ul_setvmode __P((struct grf_softc *, unsigned));
static __inline void ul_setfb __P((struct grf_softc *, u_long));
/*
* marked true early so that ulowell_cnprobe() can tell if we are alive.
*/
int ulowell_inited;
/* standard-palette definition */
u_int8_t ul_std_palette[] = {
0,128, 0,128, 0,128, 0,128, 0,255, 0,255, 0,255, 0,255,
0, 0,128,128, 0, 0,128,128, 0, 0,255,255, 0, 0,255,255,
0, 0, 0, 0, 128,128,128,128, 0, 0, 0, 0, 255,255,255,255};
u_int8_t ul_ovl_palette[] = {
128, 0, 0, 0,
128, 0, 0, 0,
128, 0, 0, 0};
struct grfvideo_mode ul_monitor_defs[] = {
/*
* Horizontal values are given in TMS units, that is, for the
* A2410 board, units of 16 pixels. The ioctl multiplies (when
* exporting) or divides (when importing) them by 16 to conform to.
*
* XXX This used to be in units of 8 pixel times. We
* must also change amiga/stand/grfconfig/grfconfig.c,
* grf_{rt,rh,cl,cv}.c and egsgrfconfig (the latter to generate the
* horizontal timings in units of pixels instead of 8 pixels.
* You will also have to write warnings in BIG BOLD RED BLINKING
* LETTERS all over the docs, and still people will fry their monitors.
*
* btw, the _totals are always sync_start+1, to compute the frequencies
* correctly. (see TMS34010 manual)
*/
/* 1024x768, 60Hz */
{1, "1024x768", 66667000, 1024, 768, 8,
82, 18, 86, 12, 87, 794, 26, 797, 2, 798},
/* 864x648, 70Hz */
{2, "864x648", 50000000, 864, 648, 8,
61, 7, 65, 3, 66, 667, 19, 677, 4, 678},
/* 800x600, 60Hz */
{3, "800x600", 36000000, 800, 600, 8,
57, 7, 61, 3, 62, 619, 19, 629, 4, 630},
/* 640x400, 60 Hz, interlaced */
{4, "640x400I", 14318000, 640, 400, 8,
48, 8, 56, 3, 57, 239, 39, 262, 2, 240},
/* 1024x768, 65Hz interlaced, s.th. is strange */
{5, "1024x768?I", 44980000, 1024, 768, 8,
76, 12, 79, 3, 80, 512, 24, 533, 2, 534},
/* 1024x1024, 60Hz */
{6, "1024x1024", 80000000, 1024,1024, 8,
77, 13, 78, 5, 78,1051, 27,1054, 2,1055},
/* 736x480, 60 Hz */
{7, "736x480", 28636300, 736, 480, 8,
54, 8, 57, 3, 58, 503, 23, 514, 3, 515},
};
int ulowell_mon_max = sizeof (ul_monitor_defs)/sizeof (ul_monitor_defs[0]);
/* option settable */
#ifndef ULOWELL_OSC1
#define ULOWELL_OSC1 36000000
#endif
#ifndef ULOWELL_OSC2
#define ULOWELL_OSC2 66667000
#endif
#ifndef ULOWELL_DEFAULT_MON
#define ULOWELL_DEFAULT_MON 1
#endif
/* patchable */
int ulowell_default_mon = ULOWELL_DEFAULT_MON;
int ulowell_default_gfx = ULOWELL_DEFAULT_MON;
/*
* yes, this should be per board. We don't pay service to multiple boards,
* anyway.
*/
u_long ulowell_clock[2] = { ULOWELL_OSC2, ULOWELL_OSC1 };
static struct grfvideo_mode *current_mon;
/*
* We dont use ints at the moment, but will need this later to avoid
* busy_waiting in gsp_write, and we use it for spurious int warnings.
*/
static int
ulisr(arg)
void *arg;
{
struct grf_softc *gp = arg;
struct gspregs *ba;
u_int16_t thebits;
if (gp == NULL)
return 0;
ba = (struct gspregs *)gp->g_regkva;
if (ba == NULL)
return 0;
thebits = ba->ctrl;
if (thebits & INTOUT) {
log(LOG_INFO, "grf4: got interrupt, ctrl=0x%4x\n", thebits);
/* clear int */
ba->ctrl = thebits & ~INTOUT;
return 1;
}
return 0;
}
/*
* used to query the ulowell board to see if its alive.
* for the moment, a NOP.
*/
int
ulowell_alive(mdp)
struct grfvideo_mode *mdp;
{
return 1;
}
/*
* Load the (mostly) ite support code and the default colormaps.
*/
static void
ul_load_code(gp)
struct grf_softc *gp;
{
struct grf_ul_softc *gup;
struct gspregs *ba;
struct grfinfo *gi;
int i,j;
#if 0
struct grf_colormap gcm;
#endif
gup = (struct grf_ul_softc *)gp;
ba = (struct gspregs *)gp->g_regkva;
gi = &gp->g_display;
gi->gd_regaddr = ztwopa((caddr_t)ba);
gi->gd_regsize = sizeof(struct gspregs);
gi->gd_fbaddr = NULL;
gi->gd_fbsize = 0;
gi->gd_fbwidth = 1024;
gi->gd_fbheight = 1024;
gi->gd_colors = 256;
ba->ctrl = (ba->ctrl & ~INCR) | (LBL | INCW);
ba->hstadrh = 0xC000;
ba->hstadrl = 0x0080;
ba->data = 0x0; /* disable screen refresh and video output */
ba->data = 0xFFFC; /* screen refresh base address */
ba->data = 0xFFFF; /* no display int possible */
ba->data = 0x000C; /* CAS before RAS refresh each 64 local clks */
ba->ctrl = (ba->ctrl & ~INCW) | LBL;
ba->hstadrh = 0xfe80;
ba->hstadrl = 0;
ba->data = 4;
ba->hstadrl = 0x20;
ba->data = 0xFF; /* all color planes visible */
ba->hstadrl = 0;
ba->data = 5;
ba->hstadrl = 0x20;
ba->data = 0; /* no color planes blinking */
ba->hstadrl = 0;
ba->data = 6;
ba->hstadrl = 0x20;
ba->data = gup->gus_ovslct = 0x43;
/* overlay visible, no overlay blinking, overlay color 0 transparent */
ba->hstadrl = 0;
ba->data = 7;
ba->hstadrl = 0x20;
ba->data = 0; /* voodoo */
/* clear overlay planes */
ba->ctrl |= INCW;
ba->hstadrh = 0xff80;
ba->hstadrl = 0x0000;
for (i=0xff80000; i< 0xffa0000; ++i) {
ba->data = 0;
}
/* download tms code */
ba->ctrl = LBL | INCW | NMI | NMIM | HLT | CF;
printf("\ndownloading TMS code");
i=0;
while ((j = tmscode[i++])) {
printf(".");
ba->hstadrh = tmscode[i++];
ba->hstadrl = tmscode[i++];
while (j-- > 0) {
ba->data = tmscode[i++];
}
}
/* font info was uploaded in ite_ul.c(ite_ulinit). */
#if 1
/* XXX load image palette with some initial values, slightly hacky */
ba->hstadrh = 0xfe80;
ba->hstadrl = 0x0000;
ba->ctrl |= INCW;
ba->data = 0;
ba->ctrl &= ~INCW;
for (i=0; i<16; ++i) {
ba->data = gup->gus_imcmap[i+ 0] = ul_std_palette[i+ 0];
ba->data = gup->gus_imcmap[i+256] = ul_std_palette[i+16];
ba->data = gup->gus_imcmap[i+512] = ul_std_palette[i+32];
}
/*
* XXX load shadow overlay palette with what the TMS code will load
* into the real one some time after the TMS code is started below.
* This might be considered a rude hack.
*/
bcopy(ul_ovl_palette, gup->gus_ovcmap, 3*4);
/*
* Unflush cache, unhalt cpu -> nmi starts to run. This MUST NOT BE
* DONE before the image color map initialization above, to guarantee
* the index register in the BT458 is not used by more than one CPU
* at once.
*
* XXX For the same reason, we'll have to rething ul_putcmap(). For
* details, look at comment there.
*/
ba->ctrl &= ~(HLT|CF);
#else
/*
* XXX I wonder why this partially ever worked.
*
* This can't possibly work this way, as we are copyin()ing data in
* ul_putcmap.
*
* I guess this partially worked because SFC happened to point to
* to supervisor data space on 68030 machines coming from the old
* boot loader.
*
* While this looks more correct than the hack in the other part of the
* loop, we would have to do our own version of the loop through
* colormap entries, set up command buffer, and call gsp_write(), or
* factor out some code.
*/
/*
* XXX This version will work for the overlay, if our queue codes
* initial conditions are set at load time (not start time).
* It further assumes that ul_putcmap only uses the
* GRFIMDEV/GRFOVDEV bits of the dev parameter.
*/
/* unflush cache, unhalt cpu first -> nmi starts to run */
ba->ctrl &= ~(HLT|CF);
gcm.index = 0;
gcm.count = 16;
gcm.red = ul_std_palette + 0;
gcm.green = ul_std_palette + 16;
gcm.blue = ul_std_palette + 32;
ul_putcmap(gp, &gcm, GRFIMDEV);
gcm.index = 0;
gcm.count = 4;
gcm.red = ul_ovl_palette + 0;
gcm.green = ul_ovl_palette + 4;
gcm.blue = ul_ovl_palette + 8;
ul_putcmap(gp, &gcm, GRFOVDEV);
#endif
}
static int
ul_load_mon(gp, md)
struct grf_softc *gp;
struct grfvideo_mode *md;
{
struct grf_ul_softc *gup;
struct grfinfo *gi;
struct gspregs *ba;
u_int16_t buf[8];
gup = (struct grf_ul_softc *)gp;
gi = &gp->g_display;
ba = (struct gspregs *)gp->g_regkva;
gi->gd_dyn.gdi_fbx = 0;
gi->gd_dyn.gdi_fby = 0;
gi->gd_dyn.gdi_dwidth = md->disp_width;
gi->gd_dyn.gdi_dheight = md->disp_height;
gi->gd_dyn.gdi_dx = 0;
gi->gd_dyn.gdi_dy = 0;
ba->ctrl = (ba->ctrl & ~INCR) | (LBL | INCW); /* XXX */
ba->hstadrh = 0xC000;
ba->hstadrl = 0x0000;
ba->data = md->hsync_stop;
ba->data = md->hblank_stop;
ba->data = md->hblank_start;
ba->data = md->hsync_start;
ba->data = md->vsync_stop;
ba->data = md->vblank_stop;
ba->data = md->vblank_start;
ba->data = md->vsync_start;
ba->ctrl &= ~INCW;
ba->hstadrh = 0xFE90;
ba->hstadrl = 0x0000;
if (abs(md->pixel_clock - ulowell_clock[0]) >
abs(md->pixel_clock - ulowell_clock[1])) {
ba->data = (ba->data & 0xFC) | 2 | 1;
md->pixel_clock = ulowell_clock[1];
} else {
ba->data = (ba->data & 0xFC) | 2 | 0;
md->pixel_clock = ulowell_clock[0];
}
ba->ctrl |= LBL | INCW;
ba->hstadrh = 0xC000;
ba->hstadrl = 0x0080;
ba->data = (md->vblank_start - md->vblank_stop == md->disp_height ?
0xf020 : 0xb020);
/* I guess this should be in the yet unimplemented mode select ioctl */
/* Hm.. maybe not. We always put the console on overlay plane no 0. */
/* Anyway, this _IS_ called in the mode select ioctl. */
/* ite support code parameters: */
buf[0] = GCMD_MCHG;
buf[1] = md->disp_width; /* display width */
buf[2] = md->disp_height; /* display height */
buf[3] = 0; /* LSW of frame buffer origin */
buf[4] = 0xFF80; /* MSW of frame buffer origin */
buf[5] = gi->gd_fbwidth * 1; /* frame buffer pitch */
buf[6] = 1; /* frame buffer depth */
gsp_write(ba, buf, 7);
return(1);
}
int ul_mode __P((struct grf_softc *, u_long, void *, u_long, int));
void grfulattach __P((struct device *, struct device *, void *));
int grfulprint __P((void *, const char *));
int grfulmatch __P((struct device *, void *, void *));
struct cfattach grful_ca = {
sizeof(struct grf_ul_softc), grfulmatch, grfulattach
};
struct cfdriver grful_cd = {
NULL, "grful", DV_DULL, NULL, 0
};
/*
* only used in console init
*/
static struct cfdata *cfdata;
/*
* we make sure to only init things once. this is somewhat
* tricky regarding the console.
*/
int
grfulmatch(pdp, match, auxp)
struct device *pdp;
void *match, *auxp;
{
#ifdef ULOWELLCONSOLE
struct cfdata *cfp = match;
static int ulconunit = -1;
#endif
struct zbus_args *zap;
zap = auxp;
/*
* allow only one ulowell console
*/
if (amiga_realconfig == 0)
#ifdef ULOWELLCONSOLE
if (ulconunit != -1)
#endif
return(0);
if (zap->manid != 1030 || zap->prodid != 0)
return(0);
#ifdef ULOWELLCONSOLE
if (amiga_realconfig == 0 || ulconunit != cfp->cf_unit) {
#endif
if ((unsigned)ulowell_default_mon > ulowell_mon_max)
ulowell_default_mon = 1;
current_mon = ul_monitor_defs + ulowell_default_mon - 1;
if (ulowell_alive(current_mon) == 0)
return(0);
#ifdef ULOWELLCONSOLE
if (amiga_realconfig == 0) {
ulconunit = cfp->cf_unit;
cfdata = cfp;
}
}
#endif
return(1);
}
/*
* attach to the grfbus (zbus)
*/
void
grfulattach(pdp, dp, auxp)
struct device *pdp, *dp;
void *auxp;
{
static struct grf_ul_softc congrf;
struct zbus_args *zap;
struct grf_softc *gp;
struct grf_ul_softc *gup;
zap = auxp;
if (dp == NULL)
gup = &congrf;
else
gup = (struct grf_ul_softc *)dp;
gp = &gup->gus_sc;
if (dp != NULL && congrf.gus_sc.g_regkva != 0) {
/*
* inited earlier, just copy (not device struct)
*/
bcopy(&congrf.gus_sc.g_display, &gp->g_display,
(char *)&gup->gus_isr - (char *)&gp->g_display);
/* ...and transfer the isr */
gup->gus_isr.isr_ipl = 2;
gup->gus_isr.isr_intr = ulisr;
gup->gus_isr.isr_arg = (void *)gp;
/*
* To make sure ints are always catched, first add new isr
* then remove old:
*/
add_isr(&gup->gus_isr);
remove_isr(&congrf.gus_isr);
} else {
gp->g_regkva = (caddr_t)zap->va;
gp->g_fbkva = NULL;
gp->g_unit = GRF_ULOWELL_UNIT;
gp->g_flags = GF_ALIVE;
gp->g_mode = ul_mode;
gp->g_conpri = grful_cnprobe();
gp->g_data = NULL;
gup->gus_isr.isr_ipl = 2;
gup->gus_isr.isr_intr = ulisr;
gup->gus_isr.isr_arg = (void *)gp;
add_isr(&gup->gus_isr);
(void)ul_load_code(gp);
(void)ul_load_mon(gp, current_mon);
grful_iteinit(gp);
}
if (dp != NULL)
printf("\n");
/*
* attach grf
*/
amiga_config_found(cfdata, &gp->g_device, gp, grfulprint);
}
int
grfulprint(auxp, pnp)
void *auxp;
const char *pnp;
{
if (pnp)
printf("grf%d at %s", ((struct grf_softc *)auxp)->g_unit,
pnp);
return(UNCONF);
}
static int
ul_getvmode (gp, vm)
struct grf_softc *gp;
struct grfvideo_mode *vm;
{
struct grfvideo_mode *md;
if (vm->mode_num && vm->mode_num > ulowell_mon_max)
return EINVAL;
if (! vm->mode_num)
vm->mode_num = current_mon - ul_monitor_defs + 1;
md = ul_monitor_defs + vm->mode_num - 1;
strncpy (vm->mode_descr, md->mode_descr,
sizeof (vm->mode_descr));
/* XXX should tell TMS to measure it */
vm->pixel_clock = md->pixel_clock;
vm->disp_width = md->disp_width;
vm->disp_height = md->disp_height;
vm->depth = md->depth;
vm->hblank_start = (md->hblank_start - md->hblank_stop) * 16;
vm->hblank_stop = (md->htotal - 1) * 16;
vm->hsync_start = (md->hsync_start - md->hblank_stop) * 16;
vm->hsync_stop = (md->hsync_stop + md->htotal - md->hblank_stop) * 16;
vm->htotal = md->htotal * 16;
vm->vblank_start = md->vblank_start - md->vblank_stop;
vm->vblank_stop = md->vtotal - 1;
vm->vsync_start = md->vsync_start - md->vblank_stop;
vm->vsync_stop = md->vsync_stop + md->vtotal - md->vblank_stop;
vm->vtotal = md->vtotal;
return 0;
}
static int
ul_setvmode (gp, mode)
struct grf_softc *gp;
unsigned mode;
{
struct grf_ul_softc *gup;
struct gspregs *ba;
int error;
if (!mode || mode > ulowell_mon_max)
return EINVAL;
ba = (struct gspregs *)gp->g_regkva;
gup = (struct grf_ul_softc *)gp;
current_mon = ul_monitor_defs + mode - 1;
error = ul_load_mon (gp, current_mon) ? 0 : EINVAL;
return error;
}
/*
* Set the frame buffer or overlay planes on or off.
* Always succeeds.
*/
static __inline void
ul_setfb(gp, cmd)
struct grf_softc *gp;
u_long cmd;
{
struct grf_ul_softc *gup;
struct gspregs *ba;
gup = (struct grf_ul_softc *)gp;
ba = (struct gspregs *)gp->g_regkva;
ba->ctrl = LBL;
ba->hstadrh = 0xfe80;
ba->hstadrl = 0x0000;
ba->data = 6;
ba->hstadrl = 0x0020;
switch (cmd) {
case GM_GRFON:
gup->gus_ovslct |= 0x40;
break;
case GM_GRFOFF:
gup->gus_ovslct &= ~0x40;
break;
case GM_GRFOVON:
gup->gus_ovslct |= 3;
break;
case GM_GRFOVOFF:
gup->gus_ovslct &= ~3;
break;
}
ba->data = gup->gus_ovslct;
}
/*
* Change the mode of the display.
* Return a UNIX error number or 0 for success.
*/
int
ul_mode(gp, cmd, arg, a2, a3)
struct grf_softc *gp;
u_long cmd;
void *arg;
u_long a2;
int a3;
{
int i;
struct grfdyninfo *gd;
switch (cmd) {
case GM_GRFON:
case GM_GRFOFF:
case GM_GRFOVON:
case GM_GRFOVOFF:
ul_setfb (gp, cmd);
return 0;
case GM_GRFCONFIG:
gd = (struct grfdyninfo *)arg;
for (i=0; i<ulowell_mon_max; ++i) {
if (ul_monitor_defs[i].disp_width == gd->gdi_dwidth &&
ul_monitor_defs[i].disp_height == gd->gdi_dheight)
return ul_setvmode(gp, i+1);
}
return EINVAL;
case GM_GRFGETVMODE:
return ul_getvmode (gp, (struct grfvideo_mode *) arg);
case GM_GRFSETVMODE:
return ul_setvmode (gp, *(unsigned *) arg);
case GM_GRFGETNUMVM:
*(int *)arg = ulowell_mon_max;
return 0;
case GM_GRFIOCTL:
return ul_ioctl (gp, a2, arg, (dev_t)a3);
default:
break;
}
return EINVAL;
}
int
ul_ioctl (gp, cmd, data, dev)
register struct grf_softc *gp;
u_long cmd;
void *data;
dev_t dev;
{
switch (cmd) {
#if 0
/*
* XXX we have no hardware sprites, but might implement them
* later in TMS code.
*/
case GRFIOCGSPRITEPOS:
return ul_getspritepos (gp, (struct grf_position *) data);
case GRFIOCSSPRITEPOS:
return ul_setspritepos (gp, (struct grf_position *) data);
case GRFIOCSSPRITEINF:
return ul_setspriteinfo (gp, (struct grf_spriteinfo *) data);
case GRFIOCGSPRITEINF:
return ul_getspriteinfo (gp, (struct grf_spriteinfo *) data);
case GRFIOCGSPRITEMAX:
return ul_getspritemax (gp, (struct grf_position *) data);
#endif
case GRFIOCGETCMAP:
return ul_getcmap (gp, (struct grf_colormap *) data, dev);
case GRFIOCPUTCMAP:
return ul_putcmap (gp, (struct grf_colormap *) data, dev);
case GRFIOCBITBLT:
return ul_bitblt (gp, (struct grf_bitblt *) data, dev);
case GRFIOCBLANK:
return ul_blank (gp, (int *) data, dev);
}
return EINVAL;
}
int
ul_getcmap (gp, cmap, dev)
struct grf_softc *gp;
struct grf_colormap *cmap;
dev_t dev;
{
struct grf_ul_softc *gup;
u_int8_t *mymap;
int mxidx, error;
gup = (struct grf_ul_softc *)gp;
if (minor(dev) & GRFIMDEV) {
mxidx = 256;
mymap = gup->gus_imcmap;
} else {
mxidx = 4;
mymap = gup->gus_ovcmap;
}
if (cmap->count == 0 || cmap->index >= mxidx)
return 0;
if (cmap->index + cmap->count > mxidx)
cmap->count = mxidx - cmap->index;
/* just copyout from the shadow color map */
if ((error = copyout(mymap + cmap->index, cmap->red, cmap->count))
|| (error = copyout(mymap + mxidx + cmap->index, cmap->green,
cmap->count))
|| (error = copyout(mymap + mxidx * 2 + cmap->index, cmap->blue,
cmap->count)))
return(error);
return(0);
}
int
ul_putcmap (gp, cmap, dev)
struct grf_softc *gp;
struct grf_colormap *cmap;
dev_t dev;
{
struct grf_ul_softc *gup;
struct gspregs *ba;
u_int16_t cmd[8];
int x, mxidx, error;
u_int8_t *mymap;
gup = (struct grf_ul_softc *)gp;
if (minor(dev) & GRFIMDEV) {
mxidx = 256;
mymap = gup->gus_imcmap;
} else {
mxidx = 4;
mymap = gup->gus_ovcmap;
}
if (cmap->count == 0 || cmap->index >= mxidx)
return 0;
if (cmap->index + cmap->count > mxidx)
cmap->count = mxidx - cmap->index;
/* first copyin to our shadow color map */
if ((error = copyin(cmap->red, mymap + cmap->index, cmap->count))
|| (error = copyin(cmap->green, mymap + cmap->index + mxidx,
cmap->count))
|| (error = copyin(cmap->blue, mymap + cmap->index + mxidx*2,
cmap->count)))
return error;
/* then write from there to the hardware */
ba = (struct gspregs *)gp->g_regkva;
/*
* XXX This is a bad thing to do.
* We should always use the gsp call, or have a means to arbitrate
* the usage of the BT458 index register. Else there might be a
* race condition (when writing both colormaps at nearly the same
* time), where one CPU changes the index register when the other
* one has not finished using it.
*/
if (mxidx > 4) {
/* image color map: we can write, with a hack, directly */
ba->ctrl = LBL;
ba->hstadrh = 0xfe80;
ba->hstadrl = 0x0000;
ba->ctrl |= INCW;
ba->data = cmap->index;
ba->ctrl &= ~INCW;
for (x=cmap->index; x < cmap->index + cmap->count; ++x) {
ba->data = (u_int16_t) mymap[x];
ba->data = (u_int16_t) mymap[x + mxidx];
ba->data = (u_int16_t) mymap[x + mxidx * 2];
}
} else {
/* overlay planes color map: have to call tms to do it */
cmd[0] = GCMD_CMAP;
cmd[1] = 1;
for (x=cmap->index; x < cmap->index + cmap->count; ++x) {
cmd[2] = x;
cmd[3] = mymap[x];
cmd[4] = mymap[x + mxidx];
cmd[5] = mymap[x + mxidx * 2];
gsp_write(ba, cmd, 6);
}
}
return 0;
}
int
ul_blank(gp, onoff, dev)
struct grf_softc *gp;
int *onoff;
dev_t dev;
{
struct gspregs *gsp;
gsp = (struct gspregs *)gp->g_regkva;
gsp->ctrl = (gsp->ctrl & ~(INCR | INCW)) | LBL;
gsp->hstadrh = 0xC000;
gsp->hstadrl = 0x0080;
if (*onoff > 0)
gsp->data |= 0x9000;
else
gsp->data &= ~0x9000;
return 0;
}
/*
* !!! THIS AREA UNDER CONSTRUCTION !!!
*/
int ul_BltOpMap[16] = {
3, 1, 2, 0, 11, 9, 10, 8,
7, 5, 6, 4, 15, 13, 14, 12
};
int
ul_bitblt (gp, bb, dev)
struct grf_softc *gp;
struct grf_bitblt *bb;
dev_t dev;
{
/* XXX not yet implemented, but pretty trivial */
return EINVAL;
}
void
gsp_write(gsp, ptr, size)
struct gspregs *gsp;
u_short *ptr;
size_t size;
{
u_short put, new_put, next, oc;
u_long put_hi, oa;
size_t n;
if (size == 0 || size > 8)
return;
n = size;
oc = gsp->ctrl;
oa = GSPGETHADRS(gsp);
gsp->ctrl = (oc & ~INCR) | LBL | INCW;
GSPSETHADRS(gsp, GSP_MODE_ADRS);
gsp->data &= ~GMODE_FLUSH;
GSPSETHADRS(gsp, PUT_HI_PTR_ADRS);
put_hi = gsp->data << 16;
GSPSETHADRS(gsp, PUT_PTR_ADRS);
put = gsp->data;
new_put = put + (8<<4);
GSPSETHADRS(gsp, GET_PTR_ADRS);
next = gsp->data;
while (next == new_put) {
/*
* we should use an intr. here. unfortunately, we already
* are called from an interupt and can't use tsleep.
* so we do busy waiting, at least for the moment.
*/
GSPSETHADRS(gsp,GET_PTR_ADRS);
next = gsp->data;
}
GSPSETHADRS(gsp,put|put_hi);
gsp->data = *ptr++ | 8<<4;
while ( --n > 0) {
gsp->data = *ptr++;
}
GSPSETHADRS(gsp,PUT_PTR_ADRS);
gsp->data = new_put;
GSPSETHADRS(gsp,oa);
gsp->ctrl = oc;
return;
}
#endif /* NGRF */