NetBSD-5.0.2/sys/dev/mca/com_mca.c
/* $NetBSD: com_mca.c,v 1.21 2008/04/28 20:23:53 martin Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum.
*
* 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.
*/
/*-
* Copyright (c) 1991 The Regents of the University of California.
* 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. Neither the name of the University 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 REGENTS 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.
*
* @(#)com.c 7.5 (Berkeley) 5/16/91
*/
/*
* This driver attaches serial port boards and internal modems.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: com_mca.c,v 1.21 2008/04/28 20:23:53 martin Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ioctl.h>
#include <sys/select.h>
#include <sys/tty.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/file.h>
#include <sys/uio.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
#include <sys/device.h>
#include <sys/intr.h>
#include <sys/bus.h>
#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>
#include <dev/mca/mcavar.h>
#include <dev/mca/mcadevs.h>
struct com_mca_softc {
struct com_softc sc_com; /* real "com" softc */
/* MCA-specific goo. */
void *sc_ih; /* interrupt handler */
};
int com_mca_probe(device_t, cfdata_t , void *);
void com_mca_attach(device_t, device_t, void *);
static int ibm_modem_getcfg(struct mca_attach_args *, int *, int *);
static int neocom1_getcfg(struct mca_attach_args *, int *, int *);
static int ibm_mpcom_getcfg(struct mca_attach_args *, int *, int *);
CFATTACH_DECL_NEW(com_mca, sizeof(struct com_mca_softc),
com_mca_probe, com_mca_attach, NULL, NULL);
static const struct com_mca_product {
u_int32_t cp_prodid; /* MCA product ID */
const char *cp_name; /* device name */
int (*cp_getcfg)(struct mca_attach_args *, int *iobase, int *irq);
/* get device i/o base and irq */
} com_mca_products[] = {
{ MCA_PRODUCT_IBM_MOD, "IBM Internal Modem", ibm_modem_getcfg },
{ MCA_PRODUCT_NEOCOM1, "NeoTecH Single RS-232 Async. Adapter, SM110",
neocom1_getcfg },
{ MCA_PRODUCT_IBM_MPCOM,"IBM Multi-Protocol Communications Adapter",
ibm_mpcom_getcfg },
{ 0, NULL, NULL },
};
static const struct com_mca_product *com_mca_lookup(int);
static const struct com_mca_product *
com_mca_lookup(int ma_id)
{
const struct com_mca_product *cpp;
for (cpp = com_mca_products; cpp->cp_name != NULL; cpp++)
if (cpp->cp_prodid == ma_id)
return (cpp);
return (NULL);
}
int
com_mca_probe(device_t parent, cfdata_t match, void *aux)
{
struct mca_attach_args *ma = aux;
if (com_mca_lookup(ma->ma_id))
return (1);
return (0);
}
void
com_mca_attach(device_t parent, device_t self, void *aux)
{
struct com_mca_softc *isc = device_private(self);
struct com_softc *sc = &isc->sc_com;
int iobase, irq;
struct mca_attach_args *ma = aux;
const struct com_mca_product *cpp;
bus_space_handle_t ioh;
sc->sc_dev = self;
cpp = com_mca_lookup(ma->ma_id);
/* get iobase and irq */
if ((*cpp->cp_getcfg)(ma, &iobase, &irq))
return;
if (bus_space_map(ma->ma_iot, iobase, COM_NPORTS, 0, &ioh)) {
aprint_error(": can't map i/o space\n");
return;
}
COM_INIT_REGS(sc->sc_regs, ma->ma_iot, ioh, iobase);
sc->sc_frequency = COM_FREQ;
aprint_normal(" slot %d i/o %#x-%#x irq %d", ma->ma_slot + 1,
iobase, iobase + COM_NPORTS - 1, irq);
com_attach_subr(sc);
aprint_normal_dev(self, "%s\n", cpp->cp_name);
isc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_SERIAL,
comintr, sc);
if (isc->sc_ih == NULL) {
aprint_error_dev(self,
"couldn't establish interrupt handler\n");
return;
}
/*
* com_cleanup: shutdown hook for buggy BIOSs that don't
* recognize the UART without a disabled FIFO.
* XXX is this necessary on MCA ? --- jdolecek
*/
if (!pmf_device_register1(self, com_suspend, com_resume, com_cleanup))
aprint_error_dev(self, "could not establish shutdown hook\n");
}
/* map serial_X to iobase and irq */
static const struct {
int iobase;
int irq;
} MCA_SERIAL[] = {
{ 0x03f8, 4 }, /* SERIAL_1 */
{ 0x02f8, 3 }, /* SERIAL_2 */
{ 0x3220, 3 }, /* SERIAL_3 */
{ 0x3228, 3 }, /* SERIAL_4 */
{ 0x4220, 3 }, /* SERIAL_5 */
{ 0x4228, 3 }, /* SERIAL_6 */
{ 0x5220, 3 }, /* SERIAL_7 */
{ 0x5228, 3 }, /* SERIAL_8 */
};
/*
* Get config for IBM Internal Modem (ID 0xEDFF). This beast doesn't
* seem to support even AT commands, it's good as example for adding
* other stuff though.
*/
static int
ibm_modem_getcfg(struct mca_attach_args *ma, int *iobasep, int *irqp)
{
int pos2;
int snum;
pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2);
/*
* POS register 2: (adf pos0)
* 7 6 5 4 3 2 1 0
* \__/ \__ enable: 0=adapter disabled, 1=adapter enabled
* \_____ Serial Configuration: XX=SERIAL_XX
*/
snum = (pos2 & 0x0e) >> 1;
*iobasep = MCA_SERIAL[snum].iobase;
*irqp = MCA_SERIAL[snum].irq;
return (0);
}
/*
* Get configuration for NeoTecH Single RS-232 Async. Adapter, SM110.
*/
static int
neocom1_getcfg(struct mca_attach_args *ma, int *iobasep, int *irqp)
{
int pos2, pos3, pos4;
static const int neotech_irq[] = { 12, 9, 4, 3 };
pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2);
pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3);
pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4);
/*
* POS register 2: (adf pos0)
* 7 6 5 4 3 2 1 0
* 1 \_/ \__ enable: 0=adapter disabled, 1=adapter enabled
* \____ IRQ: 11=3 10=4 01=9 00=12
*
* POS register 3: (adf pos1)
* 7 6 5 4 3 2 1 0
* \______/
* \_________ I/O Address: bits 7-3
*
* POS register 4: (adf pos2)
* 7 6 5 4 3 2 1 0
* \_____________/
* \__ I/O Address: bits 15-8
*/
*iobasep = (pos4 << 8) | (pos3 & 0xf8);
*irqp = neotech_irq[(pos2 & 0x06) >> 1];
return (0);
}
/*
* Get configuration for IBM Multi-Protocol Communications Adapter.
* We only support SERIAL mode, bail out if set to SDLC or BISYNC.
*/
static int
ibm_mpcom_getcfg(struct mca_attach_args *ma, int *iobasep, int *irqp)
{
int snum, pos2;
pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2);
/*
* For SERIAL mode, bit 4 has to be 0.
*
* POS register 2: (adf pos0)
* 7 6 5 4 3 2 1 0
* 0 \__/ \__ enable: 0=adapter disabled, 1=adapter enabled
* \_____ Serial Configuration: XX=SERIAL_XX
*/
if (pos2 & 0x10) {
aprint_error(": not set to SERIAL mode, ignored\n");
return (1);
}
snum = (pos2 & 0x0e) >> 1;
*iobasep = MCA_SERIAL[snum].iobase;
*irqp = MCA_SERIAL[snum].irq;
return (0);
}