219 lines
6.1 KiB
C
219 lines
6.1 KiB
C
/* $NetBSD: zs_any.c,v 1.5 2001/11/26 18:06:36 fredette Exp $ */
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/*-
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* Copyright (c) 1996 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Gordon W. Ross and Matthew Fredette.
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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 the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Zilog Z8530 Dual UART driver (machine-dependent part)
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*
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* Runs two serial lines per chip using slave drivers.
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* Plain tty/async lines use the zs_async slave.
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* Sun keyboard/mouse uses the zs_kbd/zs_ms slaves.
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*/
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#include "opt_kgdb.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/file.h>
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#include <sys/ioctl.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/tty.h>
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#include <sys/time.h>
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#include <sys/syslog.h>
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#include <machine/autoconf.h>
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#include <machine/bus.h>
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#include <machine/z8530var.h>
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#ifdef KGDB
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#include <uvm/uvm_extern.h>
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#include <machine/idprom.h>
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#include <machine/pmap.h>
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#include <dev/sun/cons.h>
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#endif
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#include <sun2/sun2/machdep.h>
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#include <dev/ic/z8530reg.h>
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#include <dev/sun/kbd_reg.h>
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/****************************************************************
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* Autoconfig
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****************************************************************/
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/* Definition of the driver for autoconfig. */
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static int zs_any_match __P((struct device *, struct cfdata *, void *));
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static void zs_any_attach __P((struct device *, struct device *, void *));
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struct cfattach zs_obio_ca = {
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sizeof(struct zsc_softc), zs_any_match, zs_any_attach
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};
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struct cfattach zs_obmem_ca = {
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sizeof(struct zsc_softc), zs_any_match, zs_any_attach
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};
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struct cfattach zs_mbmem_ca = {
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sizeof(struct zsc_softc), zs_any_match, zs_any_attach
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};
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/*
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* Is the zs chip present?
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*/
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static int
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zs_any_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct mainbus_attach_args *ma = aux;
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bus_space_handle_t bh;
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int matched;
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/* Make sure there is something there... */
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if (bus_space_map(ma->ma_bustag, ma->ma_paddr, sizeof(struct zsdevice),
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0, &bh))
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return (0);
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matched = (bus_space_peek_1(ma->ma_bustag, bh, 0, NULL) == 0);
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bus_space_unmap(ma->ma_bustag, bh, sizeof(struct zsdevice));
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if (!matched)
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return (0);
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/* Default interrupt priority (always splbio==2) */
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if (ma->ma_pri == -1)
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ma->ma_pri = ZSHARD_PRI;
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return (1);
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}
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/*
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* Attach a found zs.
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*/
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static void
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zs_any_attach(parent, self, aux)
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struct device *parent;
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struct device *self;
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void *aux;
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{
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struct zsc_softc *zsc = (void *) self;
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struct mainbus_attach_args *ma = aux;
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bus_space_handle_t bh;
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zsc->zsc_bustag = ma->ma_bustag;
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zsc->zsc_dmatag = ma->ma_dmatag;
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zsc->zsc_promunit = self->dv_unit;
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zsc->zsc_node = 0;
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/* Map in the device. */
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if (bus_space_map(ma->ma_bustag, ma->ma_paddr, sizeof(struct zsdevice),
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BUS_SPACE_MAP_LINEAR, &bh))
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panic("zs_any_attach: can't map");
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/* This is where we break the bus_space(9) abstraction: */
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zs_attach(zsc, (void *)bh, ma->ma_pri);
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}
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int
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zs_console_flags(promunit, node, channel)
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int promunit;
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int node;
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int channel;
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{
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int cookie, flags = 0;
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/*
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* Use `promunit' and `channel' to derive the PROM
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* stdio handles that correspond to this device.
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*/
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if (promunit == 0)
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cookie = PROMDEV_TTYA + channel;
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else if (promunit == 1 && channel == 0)
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cookie = PROMDEV_KBD;
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else
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cookie = -1;
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/*
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* We have the console keyboard only if it's a Sun-2
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* keyboard or better. (i.e., not a Sun-1 parallel kbd).
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*/
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if (cookie == prom_stdin() &&
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(cookie != PROMDEV_KBD || prom_kbdid() >= KB_SUN2))
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flags |= ZS_HWFLAG_CONSOLE_INPUT;
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/*
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* Prevent the keyboard from matching the output device
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* (note that PROMDEV_KBD == PROMDEV_SCREEN == 0!).
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*/
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if (cookie != PROMDEV_KBD && cookie == prom_stdout())
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flags |= ZS_HWFLAG_CONSOLE_OUTPUT;
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return (flags);
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}
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#ifdef KGDB
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/*
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* Find a zs mapped by the PROM. Currently this only works to find
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* zs0 on obio.
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*/
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void *
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zs_find_prom(unit)
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int unit;
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{
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bus_addr_t zs0_phys;
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bus_space_handle_t bh;
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extern int sun68k_find_prom_map __P((bus_addr_t, bus_type_t,
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int, bus_space_handle_t *));
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if (unit != 0)
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return (NULL);
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/*
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* The physical address of zs0 is model-dependent.
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*/
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zs0_phys = (cpu_machine_id == SUN2_MACH_120 ?
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0x002000 : 0x7f2000);
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if (sun68k_find_prom_map(zs0_phys, PMAP_OBIO, sizeof(struct zsdevice), &bh))
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return (NULL);
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return ((void*) bh);
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}
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#endif /* KGDB */
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