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 1.9 2007/08/07 13:14:11 hasso 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 <sys/rman.h> 43 #include <sys/timepps.h> 44 45 #include "sioreg.h" 46 #include "sio_private.h" 47 48 #include <bus/pccard/pccard_cis.h> 49 #include <bus/pccard/pccarddevs.h> 50 #include <bus/pccard/pccardreg.h> 51 #include <bus/pccard/pccardvar.h> 52 53 static int sio_pccard_attach(device_t dev); 54 static int sio_pccard_match(device_t self); 55 static int sio_pccard_detach(device_t dev); 56 static int sio_pccard_probe(device_t dev); 57 58 static device_method_t sio_pccard_methods[] = { 59 /* Device interface */ 60 DEVMETHOD(device_probe, pccard_compat_probe), 61 DEVMETHOD(device_attach, pccard_compat_attach), 62 DEVMETHOD(device_detach, sio_pccard_detach), 63 64 /* Card interface */ 65 DEVMETHOD(card_compat_match, sio_pccard_match), 66 DEVMETHOD(card_compat_probe, sio_pccard_probe), 67 DEVMETHOD(card_compat_attach, sio_pccard_attach), 68 69 { 0, 0 } 70 }; 71 72 static driver_t sio_pccard_driver = { 73 "sio", 74 sio_pccard_methods, 75 sizeof(struct com_s), 76 }; 77 78 static int 79 sio_pccard_match(device_t dev) 80 { 81 u_int32_t fcn = PCCARD_FUNCTION_UNSPEC; 82 83 fcn = pccard_get_function(dev); 84 /* 85 * If a serial card, we are likely the right driver. However, 86 * some serial cards are better servered by other drivers, so 87 * allow other drivers to claim it, if they want. 88 */ 89 if (fcn == PCCARD_FUNCTION_SERIAL) 90 return (-100); 91 92 return(ENXIO); 93 } 94 95 static int 96 sio_pccard_probe(device_t dev) 97 { 98 /* Do not probe IRQ - pccard doesn't turn on the interrupt line */ 99 /* until bus_setup_intr */ 100 SET_FLAG(dev, COM_C_NOPROBE); 101 102 return (sioprobe(dev, 0, 0UL)); 103 } 104 105 static int 106 sio_pccard_attach(device_t dev) 107 { 108 return (sioattach(dev, 0, 0UL)); 109 } 110 111 /* 112 * sio_detach - unload the driver and clear the table. 113 * XXX TODO: 114 * This is usually called when the card is ejected, but 115 * can be caused by a modunload of a controller driver. 116 * The idea is to reset the driver's view of the device 117 * and ensure that any driver entry points such as 118 * read and write do not hang. 119 */ 120 static int 121 sio_pccard_detach(device_t dev) 122 { 123 struct com_s *com; 124 125 com = (struct com_s *) device_get_softc(dev); 126 if (com == NULL) { 127 device_printf(dev, "NULL com in siounload\n"); 128 return (0); 129 } 130 com->gone = 1; 131 if (com->irqres) { 132 bus_teardown_intr(dev, com->irqres, com->cookie); 133 bus_release_resource(dev, SYS_RES_IRQ, 0, com->irqres); 134 } 135 if (com->ioportres) 136 bus_release_resource(dev, SYS_RES_IOPORT, 0, com->ioportres); 137 if (com->tp && (com->tp->t_state & TS_ISOPEN)) { 138 device_printf(dev, "still open, forcing close\n"); 139 ttyclose(com->tp); 140 } else { 141 if (com->ibuf != NULL) 142 kfree(com->ibuf, M_DEVBUF); 143 } 144 device_printf(dev, "unloaded\n"); 145 return (0); 146 } 147 148 DRIVER_MODULE(sio, pccard, sio_pccard_driver, sio_devclass, 0, 0); 149