sys/dev/serial/sio/sio_pccard.c

   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 1.8 2007/08/07 11:30:03 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                 ttwakeup(com->tp);
 141                 ttwwakeup(com->tp);
 142         } else {
 143                 if (com->ibuf != NULL)
 144                         kfree(com->ibuf, M_DEVBUF);
 145         }
 146         device_printf(dev, "unloaded\n");
 147         return (0);
 148 }
 149
 150 DRIVER_MODULE(sio, pccard, sio_pccard_driver, sio_devclass, 0, 0);