6/sys/dev/sx/sx_pci.c

   1 /*-
   2  * Device driver for Specialix I/O8+ multiport serial card.
   3  *
   4  * Copyright 2003 Frank Mayhar <frank@exit.com>
   5  *
   6  * Derived from the "si" driver by Peter Wemm <peter@netplex.com.au>, using
   7  * lots of information from the Linux "specialix" driver by Roger Wolff
   8  * <R.E.Wolff@BitWizard.nl> and from the Intel CD1865 "Intelligent Eight-
   9  * Channel Communications Controller" datasheet.  Roger was also nice
  10  * enough to answer numerous questions about stuff specific to the I/O8+
  11  * not covered by the CD1865 datasheet.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  * 1. Redistributions of source code must retain the above copyright
  17  *    notices, this list of conditions and the following disclaimer.
  18  * 2. Redistributions in binary form must reproduce the above copyright
  19  *    notices, this list of conditions and the following disclaimer in the
  20  *    documentation and/or other materials provided with the distribution.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED
  23  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  24  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
  25  * NO EVENT SHALL THE AUTHORS BE LIABLE.
  26  *
  27  * $FreeBSD$
  28  */
  29
  30 #include <sys/param.h>
  31 #include <sys/systm.h>
  32 #include <sys/kernel.h>
  33 #include <sys/module.h>
  34 #include <sys/bus.h>
  35 #include <sys/tty.h>
  36 #include <machine/resource.h>
  37 #include <machine/bus.h>
  38 #include <machine/clock.h>
  39 #include <sys/rman.h>
  40
  41 #include <dev/sx/cd1865.h>
  42 #include <dev/sx/sxvar.h>
  43 #include <dev/sx/sx.h>
  44 #include <dev/sx/sx_util.h>
  45
  46 #include <dev/pci/pcivar.h>
  47
  48 static int
  49 sx_pci_probe(
  50         device_t dev)
  51 {
  52         const char *desc = NULL;
  53
  54         switch (pci_get_devid(dev)) {
  55                 case 0x200011cb:
  56                         if (pci_get_subdevice(dev) == (uint16_t)0xb008) {
  57                                 desc = "Specialix I/O8+ Multiport Serial Card";
  58                         }
  59                         break;
  60         }
  61         if (desc) {
  62                 device_set_desc(dev, desc);
  63                 return BUS_PROBE_DEFAULT;
  64         }
  65         return ENXIO;
  66 }
  67
  68 static int
  69 sx_pci_attach(device_t dev)
  70 {
  71         struct sx_softc *sc;
  72         void *ih;
  73         int error;
  74
  75         error = 0;
  76         ih = NULL;
  77         sc = device_get_softc(dev);
  78
  79         sc->sc_io_rid = 0x18;
  80         sc->sc_io_res = bus_alloc_resource(dev,
  81                                            SYS_RES_IOPORT,
  82                                            &sc->sc_io_rid,
  83                                            0, ~0, 1,
  84                                            RF_ACTIVE);
  85         if (!sc->sc_io_res) {
  86                 device_printf(dev, "can't map I/O\n");
  87                 goto fail;
  88         }
  89         sc->sc_st = rman_get_bustag(sc->sc_io_res);
  90         sc->sc_sh = rman_get_bushandle(sc->sc_io_res);
  91
  92         /*
  93          * Now that we have the bus handle, we can make certain that this
  94          * is an I/O8+.
  95          */
  96         if (sx_probe_io8(dev)) {
  97                 device_printf(dev, "Oops!  Device is not an I/O8+ board!\n");
  98                 goto fail;
  99         }
 100
 101         /*sc->sc_paddr = (caddr_t)rman_get_start(sc->sc_io_res);*/
 102         /*sc->sc_maddr = rman_get_virtual(sc->sc_io_res);*/
 103
 104         sc->sc_irq_rid = 0;
 105         sc->sc_irq_res = bus_alloc_resource(dev,
 106                                             SYS_RES_IRQ,
 107                                             &sc->sc_irq_rid,
 108                                             0, ~0, 1,
 109                                             RF_ACTIVE | RF_SHAREABLE);
 110         if (!sc->sc_irq_res) {
 111                 device_printf(dev, "Can't map interrupt\n");
 112                 goto fail;
 113         }
 114         sc->sc_irq = rman_get_start(sc->sc_irq_res);
 115         error = bus_setup_intr(dev,
 116                                sc->sc_irq_res,
 117                                INTR_TYPE_TTY,
 118                                sx_intr,
 119                                sc, &ih);
 120         if (error) {
 121                 device_printf(dev, "Can't activate interrupt\n");
 122                 goto fail;
 123         }
 124
 125         error = sxattach(dev);
 126         if (error)
 127                 goto fail;
 128         return (0);             /* success */
 129
 130 fail:
 131         if (error == 0)
 132                 error = ENXIO;
 133         if (sc->sc_irq_res) {
 134                 if (ih)
 135                         bus_teardown_intr(dev, sc->sc_irq_res, ih);
 136                 bus_release_resource(dev,
 137                                      SYS_RES_IRQ,
 138                                      sc->sc_irq_rid,
 139                                      sc->sc_irq_res);
 140                 sc->sc_irq_res = 0;
 141         }
 142         if (sc->sc_io_res) {
 143                 bus_release_resource(dev,
 144                                      SYS_RES_IOPORT,
 145                                      sc->sc_io_rid,
 146                                      sc->sc_io_res);
 147                 sc->sc_io_res = 0;
 148         }
 149         return(error);
 150 }
 151
 152 static device_method_t sx_pci_methods[] = {
 153         /* Device interface */
 154         DEVMETHOD(device_probe,         sx_pci_probe),
 155         DEVMETHOD(device_attach,        sx_pci_attach),
 156 /*      DEVMETHOD(device_detach,        sx_pci_detach),*/
 157
 158         { 0, 0 }
 159 };
 160
 161 static driver_t sx_pci_driver = {
 162         "sx",
 163         sx_pci_methods,
 164         sizeof(struct sx_softc),
 165 };
 166
 167 DRIVER_MODULE(sx, pci, sx_pci_driver, sx_devclass, 0, 0);