506 lines
13 KiB
C
506 lines
13 KiB
C
/* $NetBSD: tcx.c,v 1.7 1997/05/24 20:16:32 pk Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1996 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Paul Kranenburg.
|
|
*
|
|
* 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 the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``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 REGENTS OR CONTRIBUTORS 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.
|
|
*/
|
|
|
|
/*
|
|
* color display (TCX) driver.
|
|
*
|
|
* Does not handle interrupts, even though they can occur.
|
|
*
|
|
* XXX should defer colormap updates to vertical retrace interrupts
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/device.h>
|
|
#include <machine/fbio.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/tty.h>
|
|
#include <sys/conf.h>
|
|
|
|
#ifdef DEBUG
|
|
#include <sys/proc.h>
|
|
#include <sys/syslog.h>
|
|
#endif
|
|
|
|
#include <vm/vm.h>
|
|
|
|
#include <machine/autoconf.h>
|
|
#include <machine/pmap.h>
|
|
#include <machine/fbvar.h>
|
|
#include <machine/cpu.h>
|
|
#include <machine/conf.h>
|
|
|
|
#include <sparc/dev/btreg.h>
|
|
#include <sparc/dev/btvar.h>
|
|
#include <sparc/dev/tcxreg.h>
|
|
#include <sparc/dev/sbusvar.h>
|
|
|
|
#if 0
|
|
union cursor_cmap { /* colormap, like bt_cmap, but tiny */
|
|
u_char cm_map[2][3]; /* 2 R/G/B entries */
|
|
u_int cm_chip[2]; /* 2 chip equivalents */
|
|
};
|
|
|
|
struct tcx_cursor { /* tcx hardware cursor status */
|
|
short cc_enable; /* cursor is enabled */
|
|
struct fbcurpos cc_pos; /* position */
|
|
struct fbcurpos cc_hot; /* hot-spot */
|
|
struct fbcurpos cc_size; /* size of mask & image fields */
|
|
u_int cc_bits[2][32]; /* space for mask & image bits */
|
|
union cursor_cmap cc_color; /* cursor colormap */
|
|
};
|
|
#endif
|
|
|
|
/* per-display variables */
|
|
struct tcx_softc {
|
|
struct device sc_dev; /* base device */
|
|
struct sbusdev sc_sd; /* sbus device */
|
|
struct fbdevice sc_fb; /* frame buffer device */
|
|
struct rom_reg sc_physadr[TCX_NREG]; /* phys addr of h/w */
|
|
int sc_bustype; /* type of bus we live on */
|
|
volatile struct bt_regs *sc_bt; /* Brooktree registers */
|
|
volatile struct tcx_thc *sc_thc; /* THC registers */
|
|
short sc_blanked; /* true if blanked */
|
|
union bt_cmap sc_cmap; /* Brooktree color map */
|
|
};
|
|
|
|
/* autoconfiguration driver */
|
|
static void tcxattach __P((struct device *, struct device *, void *));
|
|
static int tcxmatch __P((struct device *, struct cfdata *, void *));
|
|
static void tcx_unblank __P((struct device *));
|
|
|
|
/* cdevsw prototypes */
|
|
cdev_decl(tcx);
|
|
|
|
struct cfattach tcx_ca = {
|
|
sizeof(struct tcx_softc), tcxmatch, tcxattach
|
|
};
|
|
|
|
struct cfdriver tcx_cd = {
|
|
NULL, "tcx", DV_DULL
|
|
};
|
|
|
|
/* frame buffer generic driver */
|
|
static struct fbdriver tcx_fbdriver = {
|
|
tcx_unblank, tcxopen, tcxclose, tcxioctl, tcxpoll, tcxmmap
|
|
};
|
|
|
|
extern int fbnode;
|
|
|
|
static void tcx_reset __P((struct tcx_softc *));
|
|
static void tcx_loadcmap __P((struct tcx_softc *, int, int));
|
|
|
|
#define OBPNAME "SUNW,tcx"
|
|
/*
|
|
* Match a tcx.
|
|
*/
|
|
int
|
|
tcxmatch(parent, cf, aux)
|
|
struct device *parent;
|
|
struct cfdata *cf;
|
|
void *aux;
|
|
{
|
|
struct confargs *ca = aux;
|
|
struct romaux *ra = &ca->ca_ra;
|
|
|
|
if (strcmp(ra->ra_name, OBPNAME))
|
|
return (0);
|
|
|
|
/*
|
|
* Mask out invalid flags from the user.
|
|
*/
|
|
cf->cf_flags &= FB_USERMASK;
|
|
|
|
if (ca->ca_bustype == BUS_SBUS)
|
|
return (1);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Attach a display.
|
|
*/
|
|
void
|
|
tcxattach(parent, self, args)
|
|
struct device *parent, *self;
|
|
void *args;
|
|
{
|
|
register struct tcx_softc *sc = (struct tcx_softc *)self;
|
|
register struct confargs *ca = args;
|
|
register int node = 0, ramsize, i;
|
|
register volatile struct bt_regs *bt;
|
|
struct fbdevice *fb = &sc->sc_fb;
|
|
int isconsole = 0, sbus = 1;
|
|
extern struct tty *fbconstty;
|
|
|
|
fb->fb_driver = &tcx_fbdriver;
|
|
fb->fb_device = &sc->sc_dev;
|
|
fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags;
|
|
|
|
/*
|
|
* XXX - should be set to FBTYPE_TCX.
|
|
* XXX For CG3 emulation to work in current (96/6) X11 servers,
|
|
* XXX `fbtype' must point to an "unregocnised" entry.
|
|
*/
|
|
fb->fb_type.fb_type = FBTYPE_RESERVED3;
|
|
|
|
if (ca->ca_ra.ra_nreg != TCX_NREG)
|
|
panic("tcx: oops");
|
|
|
|
/* Copy register address spaces */
|
|
for (i = 0; i < TCX_NREG; i++)
|
|
sc->sc_physadr[i] = ca->ca_ra.ra_reg[i];
|
|
|
|
/* XXX - fix THC and TEC offsets */
|
|
sc->sc_physadr[TCX_REG_TEC].rr_paddr += 0x1000;
|
|
sc->sc_physadr[TCX_REG_THC].rr_paddr += 0x1000;
|
|
|
|
sc->sc_bt = bt = (volatile struct bt_regs *)
|
|
mapiodev(&ca->ca_ra.ra_reg[TCX_REG_CMAP], 0, sizeof *sc->sc_bt);
|
|
sc->sc_thc = (volatile struct tcx_thc *)
|
|
mapiodev(&ca->ca_ra.ra_reg[TCX_REG_THC], 0, sizeof *sc->sc_thc);
|
|
|
|
switch (ca->ca_bustype) {
|
|
case BUS_SBUS:
|
|
node = ca->ca_ra.ra_node;
|
|
break;
|
|
|
|
case BUS_OBIO:
|
|
default:
|
|
printf("TCX on bus %x?\n", ca->ca_bustype);
|
|
return;
|
|
}
|
|
|
|
fb->fb_type.fb_depth = node_has_property(node, "tcx-24-bit")
|
|
? 24
|
|
: (node_has_property(node, "tcx-8-bit")
|
|
? 8
|
|
: 8);
|
|
|
|
fb_setsize(fb, fb->fb_type.fb_depth, 1152, 900,
|
|
node, ca->ca_bustype);
|
|
|
|
ramsize = fb->fb_type.fb_height * fb->fb_linebytes;
|
|
fb->fb_type.fb_cmsize = 256;
|
|
fb->fb_type.fb_size = ramsize;
|
|
printf(": %s, %d x %d", OBPNAME,
|
|
fb->fb_type.fb_width,
|
|
fb->fb_type.fb_height);
|
|
|
|
isconsole = node == fbnode && fbconstty != NULL;
|
|
|
|
printf(", id %d, rev %d, sense %d",
|
|
(sc->sc_thc->thc_config & THC_CFG_FBID) >> THC_CFG_FBID_SHIFT,
|
|
(sc->sc_thc->thc_config & THC_CFG_REV) >> THC_CFG_REV_SHIFT,
|
|
(sc->sc_thc->thc_config & THC_CFG_SENSE) >> THC_CFG_SENSE_SHIFT
|
|
);
|
|
|
|
/* reset cursor & frame buffer controls */
|
|
tcx_reset(sc);
|
|
|
|
/* grab initial (current) color map (DOES THIS WORK?) */
|
|
bt->bt_addr = 0;
|
|
for (i = 0; i < 256 * 3; i++)
|
|
((char *)&sc->sc_cmap)[i] = bt->bt_cmap >> 24;
|
|
|
|
/* enable video */
|
|
sc->sc_thc->thc_hcmisc |= THC_MISC_VIDEN;
|
|
|
|
if (isconsole) {
|
|
printf(" (console)\n");
|
|
} else
|
|
printf("\n");
|
|
|
|
if (sbus)
|
|
sbus_establish(&sc->sc_sd, &sc->sc_dev);
|
|
if (node == fbnode)
|
|
fb_attach(&sc->sc_fb, isconsole);
|
|
}
|
|
|
|
int
|
|
tcxopen(dev, flags, mode, p)
|
|
dev_t dev;
|
|
int flags, mode;
|
|
struct proc *p;
|
|
{
|
|
int unit = minor(dev);
|
|
|
|
if (unit >= tcx_cd.cd_ndevs || tcx_cd.cd_devs[unit] == NULL)
|
|
return (ENXIO);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
tcxclose(dev, flags, mode, p)
|
|
dev_t dev;
|
|
int flags, mode;
|
|
struct proc *p;
|
|
{
|
|
struct tcx_softc *sc = tcx_cd.cd_devs[minor(dev)];
|
|
|
|
tcx_reset(sc);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
tcxioctl(dev, cmd, data, flags, p)
|
|
dev_t dev;
|
|
u_long cmd;
|
|
register caddr_t data;
|
|
int flags;
|
|
struct proc *p;
|
|
{
|
|
register struct tcx_softc *sc = tcx_cd.cd_devs[minor(dev)];
|
|
int error;
|
|
|
|
switch (cmd) {
|
|
|
|
case FBIOGTYPE:
|
|
*(struct fbtype *)data = sc->sc_fb.fb_type;
|
|
break;
|
|
|
|
case FBIOGATTR:
|
|
#define fba ((struct fbgattr *)data)
|
|
fba->real_type = sc->sc_fb.fb_type.fb_type;
|
|
fba->owner = 0; /* XXX ??? */
|
|
fba->fbtype = sc->sc_fb.fb_type;
|
|
fba->sattr.flags = 0;
|
|
fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type;
|
|
fba->sattr.dev_specific[0] = -1;
|
|
fba->emu_types[0] = sc->sc_fb.fb_type.fb_type;
|
|
fba->emu_types[1] = FBTYPE_SUN3COLOR;
|
|
fba->emu_types[2] = -1;
|
|
#undef fba
|
|
break;
|
|
|
|
case FBIOGETCMAP:
|
|
return (bt_getcmap((struct fbcmap *)data, &sc->sc_cmap, 256));
|
|
|
|
case FBIOPUTCMAP:
|
|
/* copy to software map */
|
|
#define p ((struct fbcmap *)data)
|
|
error = bt_putcmap(p, &sc->sc_cmap, 256);
|
|
if (error)
|
|
return (error);
|
|
/* now blast them into the chip */
|
|
/* XXX should use retrace interrupt */
|
|
tcx_loadcmap(sc, p->index, p->count);
|
|
#undef p
|
|
break;
|
|
|
|
case FBIOGVIDEO:
|
|
*(int *)data = sc->sc_blanked;
|
|
break;
|
|
|
|
case FBIOSVIDEO:
|
|
if (*(int *)data)
|
|
tcx_unblank(&sc->sc_dev);
|
|
else if (!sc->sc_blanked) {
|
|
sc->sc_blanked = 1;
|
|
sc->sc_thc->thc_hcmisc &= ~THC_MISC_VIDEN;
|
|
/* Put monitor in `power-saving mode' */
|
|
sc->sc_thc->thc_hcmisc |= THC_MISC_VSYNC_DISABLE;
|
|
sc->sc_thc->thc_hcmisc |= THC_MISC_HSYNC_DISABLE;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
#ifdef DEBUG
|
|
log(LOG_NOTICE, "tcxioctl(%lx) (%s[%d])\n", cmd,
|
|
p->p_comm, p->p_pid);
|
|
#endif
|
|
return (ENOTTY);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
tcxpoll(dev, events, p)
|
|
dev_t dev;
|
|
int events;
|
|
struct proc *p;
|
|
{
|
|
|
|
return (seltrue(dev, events, p));
|
|
}
|
|
|
|
/*
|
|
* Clean up hardware state (e.g., after bootup or after X crashes).
|
|
*/
|
|
static void
|
|
tcx_reset(sc)
|
|
register struct tcx_softc *sc;
|
|
{
|
|
register volatile struct bt_regs *bt;
|
|
|
|
/* Enable cursor in Brooktree DAC. */
|
|
bt = sc->sc_bt;
|
|
bt->bt_addr = 0x06 << 24;
|
|
bt->bt_ctrl |= 0x03 << 24;
|
|
}
|
|
|
|
/*
|
|
* Load a subset of the current (new) colormap into the color DAC.
|
|
*/
|
|
static void
|
|
tcx_loadcmap(sc, start, ncolors)
|
|
register struct tcx_softc *sc;
|
|
register int start, ncolors;
|
|
{
|
|
register volatile struct bt_regs *bt;
|
|
register u_int *ip, i;
|
|
register int count;
|
|
|
|
ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)]; /* start/4 * 3 */
|
|
count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3;
|
|
bt = sc->sc_bt;
|
|
bt->bt_addr = BT_D4M4(start) << 24;
|
|
while (--count >= 0) {
|
|
i = *ip++;
|
|
/* hardware that makes one want to pound boards with hammers */
|
|
bt->bt_cmap = i;
|
|
bt->bt_cmap = i << 8;
|
|
bt->bt_cmap = i << 16;
|
|
bt->bt_cmap = i << 24;
|
|
}
|
|
}
|
|
|
|
static void
|
|
tcx_unblank(dev)
|
|
struct device *dev;
|
|
{
|
|
struct tcx_softc *sc = (struct tcx_softc *)dev;
|
|
|
|
if (sc->sc_blanked) {
|
|
sc->sc_blanked = 0;
|
|
sc->sc_thc->thc_hcmisc &= ~THC_MISC_VSYNC_DISABLE;
|
|
sc->sc_thc->thc_hcmisc &= ~THC_MISC_HSYNC_DISABLE;
|
|
sc->sc_thc->thc_hcmisc |= THC_MISC_VIDEN;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Base addresses at which users can mmap() the various pieces of a tcx.
|
|
*/
|
|
#define TCX_USER_RAM 0x00000000
|
|
#define TCX_USER_RAM24 0x01000000
|
|
#define TCX_USER_RAM_COMPAT 0x04000000 /* cg3 emulation */
|
|
#define TCX_USER_STIP 0x10000000
|
|
#define TCX_USER_BLIT 0x20000000
|
|
#define TCX_USER_RDFB32 0x28000000
|
|
#define TCX_USER_RSTIP 0x30000000
|
|
#define TCX_USER_RBLIT 0x38000000
|
|
#define TCX_USER_TEC 0x70001000
|
|
#define TCX_USER_BTREGS 0x70002000
|
|
#define TCX_USER_THC 0x70004000
|
|
#define TCX_USER_DHC 0x70008000
|
|
#define TCX_USER_ALT 0x7000a000
|
|
#define TCX_USER_UART 0x7000c000
|
|
#define TCX_USER_VRT 0x7000e000
|
|
#define TCX_USER_ROM 0x70010000
|
|
|
|
struct mmo {
|
|
u_int mo_uaddr; /* user (virtual) address */
|
|
u_int mo_size; /* size, or 0 for video ram size */
|
|
u_int mo_bank; /* register bank number */
|
|
};
|
|
|
|
/*
|
|
* Return the address that would map the given device at the given
|
|
* offset, allowing for the given protection, or return -1 for error.
|
|
*
|
|
* XXX needs testing against `demanding' applications (e.g., aviator)
|
|
*/
|
|
int
|
|
tcxmmap(dev, off, prot)
|
|
dev_t dev;
|
|
int off, prot;
|
|
{
|
|
register struct tcx_softc *sc = tcx_cd.cd_devs[minor(dev)];
|
|
register struct mmo *mo;
|
|
register u_int u, sz;
|
|
static struct mmo mmo[] = {
|
|
{ TCX_USER_RAM, 0, TCX_REG_DFB8 },
|
|
{ TCX_USER_RAM24, 0, TCX_REG_DFB24 },
|
|
{ TCX_USER_RAM_COMPAT, 0, TCX_REG_DFB8 },
|
|
|
|
{ TCX_USER_STIP, 1, TCX_REG_STIP },
|
|
{ TCX_USER_BLIT, 1, TCX_REG_BLIT },
|
|
{ TCX_USER_RDFB32, 1, TCX_REG_RDFB32 },
|
|
{ TCX_USER_RSTIP, 1, TCX_REG_RSTIP },
|
|
{ TCX_USER_RBLIT, 1, TCX_REG_RBLIT },
|
|
{ TCX_USER_TEC, 1, TCX_REG_TEC },
|
|
{ TCX_USER_BTREGS, 8192 /* XXX */, TCX_REG_CMAP },
|
|
{ TCX_USER_THC, sizeof(struct tcx_thc), TCX_REG_THC },
|
|
{ TCX_USER_DHC, 1, TCX_REG_DHC },
|
|
{ TCX_USER_ALT, 1, TCX_REG_ALT },
|
|
{ TCX_USER_ROM, 65536, TCX_REG_ROM },
|
|
};
|
|
#define NMMO (sizeof mmo / sizeof *mmo)
|
|
|
|
if (off & PGOFSET)
|
|
panic("tcxmmap");
|
|
|
|
/*
|
|
* Entries with size 0 map video RAM (i.e., the size in fb data).
|
|
*
|
|
* Since we work in pages, the fact that the map offset table's
|
|
* sizes are sometimes bizarre (e.g., 1) is effectively ignored:
|
|
* one byte is as good as one page.
|
|
*/
|
|
for (mo = mmo; mo < &mmo[NMMO]; mo++) {
|
|
if ((u_int)off < mo->mo_uaddr)
|
|
continue;
|
|
u = off - mo->mo_uaddr;
|
|
sz = mo->mo_size ? mo->mo_size : sc->sc_fb.fb_type.fb_size;
|
|
if (u < sz)
|
|
return (REG2PHYS(&sc->sc_physadr[mo->mo_bank], u) |
|
|
PMAP_NC);
|
|
}
|
|
#ifdef DEBUG
|
|
{
|
|
register struct proc *p = curproc; /* XXX */
|
|
log(LOG_NOTICE, "tcxmmap(%x) (%s[%d])\n", off, p->p_comm, p->p_pid);
|
|
}
|
|
#endif
|
|
return (-1); /* not a user-map offset */
|
|
}
|