sys/dev/pci/pciide.c

   1 /*      $NetBSD: pciide.c,v 1.216 2008/03/18 20:46:37 cube Exp $        */
   2
   3
   4 /*
   5  * Copyright (c) 1999, 2000, 2001 Manuel Bouyer.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  *
  27  */
  28
  29
  30 /*
  31  * Copyright (c) 1996, 1998 Christopher G. Demetriou.  All rights reserved.
  32  *
  33  * Redistribution and use in source and binary forms, with or without
  34  * modification, are permitted provided that the following conditions
  35  * are met:
  36  * 1. Redistributions of source code must retain the above copyright
  37  *    notice, this list of conditions and the following disclaimer.
  38  * 2. Redistributions in binary form must reproduce the above copyright
  39  *    notice, this list of conditions and the following disclaimer in the
  40  *    documentation and/or other materials provided with the distribution.
  41  * 3. All advertising materials mentioning features or use of this software
  42  *    must display the following acknowledgement:
  43  *      This product includes software developed by Christopher G. Demetriou
  44  *      for the NetBSD Project.
  45  * 4. The name of the author may not be used to endorse or promote products
  46  *    derived from this software without specific prior written permission
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  49  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  50  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  51  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  52  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  53  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  54  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  55  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  56  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  57  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  58  */
  59
  60 /*
  61  * PCI IDE controller driver.
  62  *
  63  * Author: Christopher G. Demetriou, March 2, 1998 (derived from NetBSD
  64  * sys/dev/pci/ppb.c, revision 1.16).
  65  *
  66  * See "PCI IDE Controller Specification, Revision 1.0 3/4/94" and
  67  * "Programming Interface for Bus Master IDE Controller, Revision 1.0
  68  * 5/16/94" from the PCI SIG.
  69  *
  70  */
  71
  72 #include <sys/cdefs.h>
  73 __KERNEL_RCSID(0, "$NetBSD: pciide.c,v 1.216 2008/03/18 20:46:37 cube Exp $");
  74
  75 #include <sys/param.h>
  76
  77 #include <dev/pci/pcivar.h>
  78 #include <dev/pci/pciidereg.h>
  79 #include <dev/pci/pciidevar.h>
  80
  81 int     pciide_match(device_t, cfdata_t, void *);
  82 void    pciide_attach(device_t, device_t, void *);
  83
  84 CFATTACH_DECL_NEW(pciide, sizeof(struct pciide_softc),
  85     pciide_match, pciide_attach, NULL, NULL);
  86
  87 int
  88 pciide_match(device_t parent, cfdata_t match, void *aux)
  89 {
  90         struct pci_attach_args *pa = aux;
  91
  92         /*
  93          * Check the ID register to see that it's a PCI IDE controller.
  94          * If it is, we assume that we can deal with it; it _should_
  95          * work in a standardized way...
  96          */
  97         if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
  98             PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) {
  99                 return (1);
 100         }
 101
 102         return (0);
 103 }
 104
 105 void
 106 pciide_attach(device_t parent, device_t self, void *aux)
 107 {
 108         struct pci_attach_args *pa = aux;
 109         struct pciide_softc *sc = device_private(self);
 110
 111         sc->sc_wdcdev.sc_atac.atac_dev = self;
 112
 113         pciide_common_attach(sc, pa, NULL);
 114 }