/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Gordon W. Ross.
*
* 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 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 FOUNDATION 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.
*/
/*
* Zilog Z8530 Dual UART driver (machine-dependent part)
*
* Runs two serial lines per chip using slave drivers.
* Plain tty/async lines use the zs_async slave.
* Sun keyboard/mouse uses the zs_kbd/zs_ms slaves.
*/
/*
* Is the zs chip present?
*/
int
zs_hb_match(device_t parent, cfdata_t cf, void *aux)
{
struct hb_attach_args *ha = aux;
if (strcmp(ha->ha_name, "zsc"))
return 0;
/* This returns -1 on a fault (bus error). */
if (hb_badaddr((char *)ha->ha_addr, 1))
return 0;
return 1;
}
/*
* Attach a found zs.
*
* Match slave number to zs unit number, so that misconfiguration will
* not set up the keyboard as ttya, etc.
*/
void
zs_hb_attach(device_t parent, device_t self, void *aux)
{
struct zsc_softc *zsc = device_private(self);
struct hb_attach_args *ha = aux;
struct zsc_attach_args zsc_args;
volatile struct zschan *zc;
struct zs_chanstate *cs;
int s, zs_unit, channel, intlevel;
/* XXX: Get these from the EEPROM instead? */
/* XXX: See the mvme167 code. Better. */
if (zsc_args.hwflags & ZS_HWFLAG_CONSOLE)
cs->cs_defspeed = zs_get_speed(cs);
else
cs->cs_defspeed = zs_defspeed;
cs->cs_defcflag = zs_def_cflag;
/* Make these correspond to cs_defcflag (-crtscts) */
cs->cs_rr0_dcd = ZSRR0_DCD;
cs->cs_rr0_cts = 0;
cs->cs_wr5_dtr = ZSWR5_DTR | ZSWR5_RTS;
cs->cs_wr5_rts = 0;
/*
* Clear the master interrupt enable.
* The INTENA is common to both channels,
* so just do it on the A channel.
*/
if (channel == 0) {
zs_write_reg(cs, 9, 0);
}
/*
* Look for a child driver for this channel.
* The child attach will setup the hardware.
*/
if (!config_found(self, (void *)&zsc_args, zs_print,
CFARGS_NONE)) {
/* No sub-driver. Just reset it. */
uint8_t reset = (channel == 0) ?
ZSWR9_A_RESET : ZSWR9_B_RESET;
s = splhigh();
zs_write_reg(cs, 9, reset);
splx(s);
}
}
/*
* Now safe to install interrupt handlers. Note the arguments
* to the interrupt handlers aren't used. Note, we only do this
* once since both SCCs interrupt at the same level and vector.
*/
zsc->zsc_si = softint_establish(SOFTINT_SERIAL,
(void (*)(void *))zsc_intr_soft, zsc);
hb_intr_establish(intlevel, INTST1_SCC, IPL_SERIAL, zshard_hb, zsc);
/* XXX; evcnt_attach() ? */
/*
* Set the master interrupt enable and interrupt vector.
* (common to both channels, do it on A)
*/
cs = zsc->zsc_cs[0];
s = splhigh();
/* interrupt vector */
zs_write_reg(cs, 2, zs_init_reg[2]);
/* master interrupt control (enable) */
zs_write_reg(cs, 9, zs_init_reg[9]);
splx(s);
}
