wdc_p.c

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    1 /*
    2  *
    3  * Copyright (c) 1996 Wolfgang Helbig <helbig@ba-stuttgart.de>
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice immediately at the beginning of the file, without modification,
   11  *    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  * 3. Absolutely no warranty of function or purpose is made by the author.
   16  * 4. Modifications may be freely made to this file if the above conditions
   17  *    are met.
   18  *
   19  * $FreeBSD$
   20  */
   21 
   22 /*
   23  * The sole purpose of this code currently is to tell the ISA wdc driver,
   24  * whether there is a CMD640 IDE chip attached to the PCI bus.
   25  */
   26 
   27 #include "pci.h"
   28 #if NPCI > 0
   29 #include "opt_wd.h"
   30 #ifdef CMD640
   31 
   32 #include <sys/param.h>
   33 #include <sys/kernel.h>
   34 #include <pci/pcireg.h>
   35 #include <pci/pcivar.h>
   36 #include <i386/isa/wdc_p.h>
   37 
   38 /*
   39  * PCI-ID's of IDE-Controller
   40  */
   41 
   42 #define CMD640B_PCI_ID  0x06401095
   43 
   44 static const char* wdc_pci_probe __P((pcici_t tag, pcidi_t type));
   45 static void wdc_pci_attach __P((pcici_t config_id, int unit));
   46 
   47 static u_long wdc_pci_count = 0;
   48 
   49 static struct pci_device wdc_pci_driver = {
   50         "wdc",
   51         wdc_pci_probe,
   52         wdc_pci_attach,
   53         &wdc_pci_count,
   54         NULL
   55 };
   56 
   57 DATA_SET (pcidevice_set, wdc_pci_driver);
   58 
   59 static const char*
   60 wdc_pci_probe (pcici_t tag, pcidi_t type)
   61 {
   62         if (type == CMD640B_PCI_ID)
   63                 return "CMD 640B IDE";
   64 
   65         return NULL;
   66 }
   67 
   68 static void
   69 wdc_pci_attach(pcici_t config_id, int unit)
   70 {
   71         if (pci_conf_read(config_id, PCI_ID_REG) == CMD640B_PCI_ID)
   72                 wdc_pci(Q_CMD640B);
   73 }
   74 
   75 #endif /* CMD640 */
   76 #endif /* NPCI > 0 */

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FreeBSD/Linux Kernel Cross Reference sys/pci/wdc_p.c

FreeBSD/Linux Kernel Cross Reference
sys/pci/wdc_p.c