FreeBSD-5.3/sys/dev/digi/digi_isa.c
/*-
* Copyright (c) 2001 Brian Somers <brian@Awfulhak.org>
* based on work by Slawa Olhovchenkov
* John Prince <johnp@knight-trosoft.com>
* Eric Hernes
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sys/dev/digi/digi_isa.c,v 1.13 2004/05/30 20:08:30 phk Exp $");
/*-
* TODO:
* Figure out how to make the non-Xi boards use memory addresses other
* than 0xd0000 !!!
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/tty.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <sys/digiio.h>
#include <dev/digi/digireg.h>
#include <dev/digi/digi.h>
/* Valid i/o addresses are any of these with either 0 or 4 added */
static u_long digi_validio[] = {
0x100, 0x110, 0x120, 0x200, 0x220, 0x300, 0x320
};
#define DIGI_NVALIDIO (sizeof(digi_validio) / sizeof(digi_validio[0]))
#define IO_SIZE 0x04
static u_long digi_validmem[] = {
0x80000, 0x88000, 0x90000, 0x98000, 0xa0000, 0xa8000, 0xb0000, 0xb8000,
0xc0000, 0xc8000, 0xd0000, 0xd8000, 0xe0000, 0xe8000, 0xf0000, 0xf8000,
0xf0000000, 0xf1000000, 0xf2000000, 0xf3000000, 0xf4000000, 0xf5000000,
0xf6000000, 0xf7000000, 0xf8000000, 0xf9000000, 0xfa000000, 0xfb000000,
0xfc000000, 0xfd000000, 0xfe000000, 0xff000000
};
#define DIGI_NVALIDMEM (sizeof(digi_validmem) / sizeof(digi_validmem[0]))
static u_char *
digi_isa_setwin(struct digi_softc *sc, unsigned int addr)
{
outb(sc->wport, sc->window = FEPWIN | (addr >> sc->win_bits));
return (sc->vmem + (addr % sc->win_size));
}
static u_char *
digi_xi_setwin(struct digi_softc *sc, unsigned int addr)
{
outb(sc->wport, sc->window = FEPMEM);
return (sc->vmem + addr);
}
static void
digi_isa_hidewin(struct digi_softc *sc)
{
outb(sc->wport, sc->window = 0);
/* outb(sc->port, 0); */
}
static void
digi_isa_towin(struct digi_softc *sc, int win)
{
outb(sc->wport, sc->window = win);
}
static void
digi_xi_towin(struct digi_softc *sc, int win)
{
outb(sc->wport, sc->window = FEPMEM);
}
/*
* sc->port should be set and its resource allocated.
*/
static int
digi_isa_check(struct digi_softc *sc)
{
int i, ident;
sc->name = NULL;
/* Invasive probe - reset the card */
outb(sc->port, FEPRST);
for (i = 0; (inb(sc->port) & FEPMASK) != FEPRST; i++) {
if (i == hz / 10)
return (0);
digi_delay(sc, "digirst", 1);
}
DLOG(DIGIDB_INIT, (sc->dev, "got reset after %d iterations\n", i));
ident = inb(sc->port);
/*
* NOTE, this probe is all wrong. I haven't got the data sheets !
*/
DLOG(DIGIDB_INIT, (sc->dev, "board type is 0x%x\n", ident));
if (ident & 0x1) {
switch (ident) {
case 0x05:
case 0x15:
case 0x25:
case 0x35:
sc->model = PCXI;
sc->csigs = &digi_xixe_signals;
switch (ident & 0x30) {
case 0:
sc->name = "Digiboard PC/Xi 64K";
sc->mem_seg = 0xf000;
sc->win_size = 0x10000;
sc->win_bits = 16;
break;
case 0x10:
sc->name = "Digiboard PC/Xi 128K";
sc->mem_seg = 0xE000;
sc->win_size = 0x20000;
sc->win_bits = 17;
break;
case 0x20:
sc->name = "Digiboard PC/Xi 256K";
sc->mem_seg = 0xC000;
sc->win_size = 0x40000;
sc->win_bits = 18;
break;
case 0x30:
sc->name = "Digiboard PC/Xi 512K";
sc->mem_seg = 0x8000;
sc->win_size = 0x80000;
sc->win_bits = 19;
break;
}
sc->wport = sc->port;
sc->module = "Xe";
sc->setwin = digi_xi_setwin;
sc->hidewin = digi_isa_hidewin;
sc->towin = digi_xi_towin;
break;
case 0xf5:
sc->name = "Digiboard PC/Xem";
sc->model = PCXEM;
sc->csigs = &digi_normal_signals;
sc->win_size = 0x8000;
sc->win_bits = 15;
sc->wport = sc->port + 1;
sc->module = "Xem";
sc->setwin = digi_isa_setwin;
sc->hidewin = digi_isa_hidewin;
sc->towin = digi_isa_towin;
break;
}
} else {
outb(sc->port, 1);
ident = inb(sc->port);
if (ident & 0x1) {
device_printf(sc->dev, "PC/Xm is unsupported\n");
return (0);
}
sc->mem_seg = 0xf000;
if (!(ident & 0xc0)) {
sc->name = "Digiboard PC/Xe 64K";
sc->model = PCXE;
sc->csigs = &digi_xixe_signals;
sc->win_size = 0x10000;
sc->win_bits = 16;
sc->wport = sc->port;
} else {
sc->name = "Digiboard PC/Xe 64/8K (windowed)";
sc->model = PCXEVE;
sc->csigs = &digi_normal_signals;
sc->win_size = 0x2000;
sc->win_bits = 13;
sc->wport = sc->port + 1;
}
sc->module = "Xe";
sc->setwin = digi_isa_setwin;
sc->hidewin = digi_isa_hidewin;
sc->towin = digi_isa_towin;
}
return (sc->name != NULL);
}
static int
digi_isa_probe(device_t dev)
{
struct digi_softc *sc = device_get_softc(dev);
int i;
KASSERT(sc, ("digi%d: softc not allocated in digi_isa_probe\n",
device_get_unit(dev)));
bzero(sc, sizeof(*sc));
sc->status = DIGI_STATUS_NOTINIT;
sc->dev = dev;
sc->res.unit = device_get_unit(dev);
if (sc->res.unit >= 16) {
/* Don't overflow our control mask */
device_printf(dev, "At most 16 digiboards may be used\n");
return (ENXIO);
}
DLOG(DIGIDB_INIT, (sc->dev, "probing on isa bus\n"));
/* Check that we've got a valid i/o address */
if ((sc->port = bus_get_resource_start(dev, SYS_RES_IOPORT, 0)) == 0) {
DLOG(DIGIDB_INIT, (sc->dev, "io address not given\n"));
return (ENXIO);
}
for (i = 0; i < DIGI_NVALIDIO; i++)
if (sc->port == digi_validio[i] ||
sc->port == digi_validio[i] + 4)
break;
if (i == DIGI_NVALIDIO) {
device_printf(dev, "0x%03x: Invalid i/o address\n", sc->port);
return (ENXIO);
}
/* Ditto for our memory address */
if ((sc->pmem = bus_get_resource_start(dev, SYS_RES_MEMORY, 0)) == 0)
return (ENXIO);
for (i = 0; i < DIGI_NVALIDMEM; i++)
if (sc->pmem == digi_validmem[i])
break;
if (i == DIGI_NVALIDMEM) {
device_printf(dev, "0x%lx: Invalid memory address\n", sc->pmem);
return (ENXIO);
}
if ((sc->pmem & 0xfffffful) != sc->pmem) {
device_printf(dev, "0x%lx: Memory address not supported\n",
sc->pmem);
return (ENXIO);
}
sc->vmem = (u_char *)sc->pmem;
DLOG(DIGIDB_INIT, (sc->dev, "isa? port 0x%03x mem 0x%lx\n",
sc->port, sc->pmem));
/* Temporarily map our io ports */
sc->res.iorid = 0;
sc->res.io = bus_alloc_resource(dev, SYS_RES_IOPORT, &sc->res.iorid,
0ul, ~0ul, IO_SIZE, RF_ACTIVE);
if (sc->res.io == NULL)
return (ENXIO);
/* Check the type of card and get internal memory characteristics */
if (!digi_isa_check(sc)) {
bus_release_resource(dev, SYS_RES_IOPORT, sc->res.iorid,
sc->res.io);
return (ENXIO);
}
/* Temporarily map our memory */
sc->res.mrid = 0;
sc->res.mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &sc->res.mrid,
0ul, ~0ul, sc->win_size, RF_ALLOCATED);
if (sc->res.mem == NULL) {
device_printf(dev, "0x%lx: Memory range is in use\n", sc->pmem);
bus_release_resource(dev, SYS_RES_IOPORT, sc->res.iorid,
sc->res.io);
return (ENXIO);
}
outb(sc->port, FEPCLR); /* drop RESET */
sc->hidewin(sc); /* set initial sc->window */
bus_release_resource(dev, SYS_RES_MEMORY, sc->res.mrid, sc->res.mem);
bus_release_resource(dev, SYS_RES_IOPORT, sc->res.iorid, sc->res.io);
/* Let digi_isa_attach() know what we've found */
bus_set_resource(dev, SYS_RES_IOPORT, 0, sc->port, IO_SIZE);
bus_set_resource(dev, SYS_RES_MEMORY, 0, sc->pmem, sc->win_size);
DLOG(DIGIDB_INIT, (sc->dev, "Probe returns -10\n"));
return (-10); /* Other drivers are preferred for now */
}
static int
digi_isa_attach(device_t dev)
{
struct digi_softc *sc = device_get_softc(dev);
int i, t, res;
u_char *ptr;
int reset;
u_long msize, iosize;
long scport;
KASSERT(sc, ("digi%d: softc not allocated in digi_isa_attach\n",
device_get_unit(dev)));
res = ENXIO;
bzero(sc, sizeof(*sc));
sc->status = DIGI_STATUS_NOTINIT;
sc->dev = dev;
sc->res.unit = device_get_unit(dev);
DLOG(DIGIDB_INIT, (sc->dev, "attaching\n"));
bus_get_resource(dev, SYS_RES_IOPORT, 0, &scport, &iosize);
bus_get_resource(dev, SYS_RES_MEMORY, 0, &sc->pmem, &msize);
sc->port = scport;
/* sc->altpin = !!(device_get_flags(dev) & DGBFLAG_ALTPIN); */
/* Allocate resources (verified in digi_isa_probe()) */
sc->res.iorid = 0;
sc->res.io = bus_alloc_resource(dev, SYS_RES_IOPORT, &sc->res.iorid,
0ul, ~0ul, iosize, RF_ACTIVE);
if (sc->res.io == NULL)
return (ENXIO);
/* Check the type of card and get internal memory characteristics */
DLOG(DIGIDB_INIT, (sc->dev, "Checking card type\n"));
if (!digi_isa_check(sc))
goto failed;
callout_handle_init(&sc->callout);
callout_handle_init(&sc->inttest);
sc->res.mrid = 0;
sc->res.mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &sc->res.mrid,
0ul, ~0ul, msize, RF_ACTIVE);
if (sc->res.mem == NULL) {
device_printf(dev, "0x%lx: Memory range is in use\n", sc->pmem);
sc->hidewin(sc);
goto failed;
}
/* map memory */
sc->vmem = pmap_mapdev(sc->pmem, msize);
DLOG(DIGIDB_INIT, (sc->dev, "internal memory segment 0x%x\n",
sc->mem_seg));
/* Start by resetting the card */
reset = FEPRST;
if (sc->model == PCXI)
reset |= FEPMEM;
outb(sc->port, reset);
for (i = 0; (inb(sc->port) & FEPMASK) != reset; i++) {
if (i == hz / 10) {
device_printf(dev, "1st reset failed\n");
sc->hidewin(sc);
goto failed;
}
digi_delay(sc, "digirst1", 1);
}
DLOG(DIGIDB_INIT, (sc->dev, "got reset after %d iterations\n", i));
if (sc->model != PCXI) {
t = (sc->pmem >> 8) & 0xffe0;
if (sc->model == PCXEVE)
t |= 0x10; /* enable windowing */
outb(sc->port + 2, t & 0xff);
outb(sc->port + 3, t >> 8);
}
if (sc->model == PCXI || sc->model == PCXE) {
outb(sc->port, FEPRST | FEPMEM);
for (i = 0; (inb(sc->port) & FEPMASK) != FEPRST; i++) {
if (i == hz / 10) {
device_printf(dev,
"memory reservation failed (0x%02x)\n",
inb(sc->port));
sc->hidewin(sc);
goto failed;
}
digi_delay(sc, "digirst2", 1);
}
DLOG(DIGIDB_INIT, (sc->dev, "got memory after %d iterations\n",
i));
}
DLOG(DIGIDB_INIT, (sc->dev, "short memory test\n"));
ptr = sc->setwin(sc, BOTWIN);
vD(ptr) = 0xA55A3CC3;
if (vD(ptr) != 0xA55A3CC3) {
device_printf(dev, "1st memory test failed\n");
sc->hidewin(sc);
goto failed;
}
DLOG(DIGIDB_INIT, (sc->dev, "1st memory test ok\n"));
ptr = sc->setwin(sc, TOPWIN);
vD(ptr) = 0x5AA5C33C;
if (vD(ptr) != 0x5AA5C33C) {
device_printf(dev, "2nd memory test failed\n");
sc->hidewin(sc);
goto failed;
}
DLOG(DIGIDB_INIT, (sc->dev, "2nd memory test ok\n"));
ptr = sc->setwin(sc, BIOSCODE + ((0xf000 - sc->mem_seg) << 4));
vD(ptr) = 0x5AA5C33C;
if (vD(ptr) != 0x5AA5C33C) {
device_printf(dev, "3rd (BIOS) memory test failed\n");
sc->hidewin(sc);
goto failed;
}
DLOG(DIGIDB_INIT, (sc->dev, "3rd memory test ok\n"));
if ((res = digi_attach(sc)) == 0)
return (0);
failed:
if (sc->res.mem != NULL) {
bus_release_resource(dev, SYS_RES_MEMORY, sc->res.mrid,
sc->res.mem);
sc->res.mem = NULL;
}
if (sc->res.io != NULL) {
bus_release_resource(dev, SYS_RES_IOPORT, sc->res.iorid,
sc->res.io);
sc->res.io = NULL;
}
return (res);
}
static device_method_t digi_isa_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, digi_isa_probe),
DEVMETHOD(device_attach, digi_isa_attach),
DEVMETHOD(device_detach, digi_detach),
DEVMETHOD(device_shutdown, digi_shutdown),
{0, 0}
};
static driver_t digi_isa_drv = {
"digi",
digi_isa_methods,
sizeof(struct digi_softc),
};
DRIVER_MODULE(digi, isa, digi_isa_drv, digi_devclass, 0, 0);