sio_puc.c revision 158124
1/*- 2 * Copyright (c) 2002 JF Hay. All rights reserved. 3 * Copyright (c) 2001 M. Warner Losh. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include <sys/cdefs.h> 27__FBSDID("$FreeBSD: head/sys/dev/sio/sio_puc.c 158124 2006-04-28 21:21:53Z marcel $"); 28 29#include <sys/param.h> 30#include <sys/systm.h> 31#include <sys/bus.h> 32#include <sys/conf.h> 33#include <sys/kernel.h> 34#include <sys/lock.h> 35#include <sys/malloc.h> 36#include <sys/mutex.h> 37#include <sys/module.h> 38#include <sys/tty.h> 39#include <machine/bus.h> 40#include <sys/timepps.h> 41 42#include <dev/puc/puc_bus.h> 43 44#include <dev/sio/siovar.h> 45#include <dev/sio/sioreg.h> 46 47static int sio_puc_attach(device_t dev); 48static int sio_puc_probe(device_t dev); 49 50static device_method_t sio_puc_methods[] = { 51 /* Device interface */ 52 DEVMETHOD(device_probe, sio_puc_probe), 53 DEVMETHOD(device_attach, sio_puc_attach), 54 DEVMETHOD(device_detach, siodetach), 55 56 { 0, 0 } 57}; 58 59static driver_t sio_puc_driver = { 60 sio_driver_name, 61 sio_puc_methods, 62 0, 63}; 64 65static int 66sio_puc_attach(device_t dev) 67{ 68 uintptr_t rclk; 69 70 if (BUS_READ_IVAR(device_get_parent(dev), dev, PUC_IVAR_CLOCK, 71 &rclk) != 0) 72 rclk = DEFAULT_RCLK; 73 return (sioattach(dev, 0, rclk)); 74} 75 76static int 77sio_puc_probe(device_t dev) 78{ 79 device_t parent; 80 uintptr_t rclk, type; 81 int error; 82 83 parent = device_get_parent(dev); 84 85 if (BUS_READ_IVAR(parent, dev, PUC_IVAR_TYPE, &type)) 86 return (ENXIO); 87 if (type != PUC_TYPE_SERIAL) 88 return (ENXIO); 89 90 if (BUS_READ_IVAR(parent, dev, PUC_IVAR_CLOCK, &rclk)) 91 rclk = DEFAULT_RCLK; 92#ifdef PC98 93 SET_FLAG(dev, SET_IFTYPE(COM_IF_NS16550)); 94#endif 95 error = sioprobe(dev, 0, rclk, 1); 96 return ((error > 0) ? error : BUS_PROBE_LOW_PRIORITY); 97} 98 99DRIVER_MODULE(sio, puc, sio_puc_driver, sio_devclass, 0, 0); 100