1 /*- 2 * Copyright (c) 1991 The Regents of the University of California. 3 * 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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * $DragonFly: src/sys/dev/serial/sio/sio_pccard.c,v 1.1 2004/01/11 16:45:17 joerg Exp $ 34 */ 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/tty.h> 38 #include <sys/proc.h> 39 #include <sys/module.h> 40 #include <sys/kernel.h> 41 #include <sys/bus.h> 42 #include <machine/bus.h> 43 #include <sys/rman.h> 44 #include <sys/timepps.h> 45 46 #include <machine/resource.h> 47 48 #include "sioreg.h" 49 #include "sio_private.h" 50 51 static int sio_pccard_attach (device_t dev); 52 static int sio_pccard_detach (device_t dev); 53 static int sio_pccard_probe (device_t dev); 54 55 static device_method_t sio_pccard_methods[] = { 56 /* Device interface */ 57 DEVMETHOD(device_probe, sio_pccard_probe), 58 DEVMETHOD(device_attach, sio_pccard_attach), 59 DEVMETHOD(device_detach, sio_pccard_detach), 60 61 { 0, 0 } 62 }; 63 64 static driver_t sio_pccard_driver = { 65 "sio", 66 sio_pccard_methods, 67 sizeof(struct com_s), 68 }; 69 70 static int 71 sio_pccard_probe(dev) 72 device_t dev; 73 { 74 /* Do not probe IRQ - pccard doesn't turn on the interrupt line */ 75 /* until bus_setup_intr */ 76 SET_FLAG(dev, COM_C_NOPROBE); 77 78 return (sioprobe(dev, 0, 0UL)); 79 } 80 81 static int 82 sio_pccard_attach(dev) 83 device_t dev; 84 { 85 return (sioattach(dev, 0, 0UL)); 86 } 87 88 /* 89 * sio_detach - unload the driver and clear the table. 90 * XXX TODO: 91 * This is usually called when the card is ejected, but 92 * can be caused by a modunload of a controller driver. 93 * The idea is to reset the driver's view of the device 94 * and ensure that any driver entry points such as 95 * read and write do not hang. 96 */ 97 static int 98 sio_pccard_detach(dev) 99 device_t dev; 100 { 101 struct com_s *com; 102 103 com = (struct com_s *) device_get_softc(dev); 104 if (com == NULL) { 105 device_printf(dev, "NULL com in siounload\n"); 106 return (0); 107 } 108 com->gone = 1; 109 if (com->irqres) { 110 bus_teardown_intr(dev, com->irqres, com->cookie); 111 bus_release_resource(dev, SYS_RES_IRQ, 0, com->irqres); 112 } 113 if (com->ioportres) 114 bus_release_resource(dev, SYS_RES_IOPORT, 0, com->ioportres); 115 if (com->tp && (com->tp->t_state & TS_ISOPEN)) { 116 device_printf(dev, "still open, forcing close\n"); 117 com->tp->t_gen++; 118 ttyclose(com->tp); 119 ttwakeup(com->tp); 120 ttwwakeup(com->tp); 121 } else { 122 if (com->ibuf != NULL) 123 free(com->ibuf, M_DEVBUF); 124 } 125 device_printf(dev, "unloaded\n"); 126 return (0); 127 } 128 129 DRIVER_MODULE(sio, pccard, sio_pccard_driver, sio_devclass, 0, 0); 130