arch/powerpc/platforms/iseries/pci.h

   1 #ifndef _PLATFORMS_ISERIES_PCI_H
   2 #define _PLATFORMS_ISERIES_PCI_H
   3
   4 /*
   5  * Created by Allan Trautman on Tue Feb 20, 2001.
   6  *
   7  * Define some useful macros for the iSeries pci routines.
   8  * Copyright (C) 2001  Allan H Trautman, IBM Corporation
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the:
  22  * Free Software Foundation, Inc.,
  23  * 59 Temple Place, Suite 330,
  24  * Boston, MA  02111-1307  USA
  25  *
  26  * Change Activity:
  27  *   Created Feb 20, 2001
  28  *   Added device reset, March 22, 2001
  29  *   Ported to ppc64, May 25, 2001
  30  * End Change Activity
  31  */
  32
  33 #include <asm/pci-bridge.h>
  34
  35 struct pci_dev;                         /* For Forward Reference */
  36
  37 /*
  38  * Decodes Linux DevFn to iSeries DevFn, bridge device, or function.
  39  * For Linux, see PCI_SLOT and PCI_FUNC in include/linux/pci.h
  40  */
  41
  42 #define ISERIES_PCI_AGENTID(idsel, func)        \
  43         (((idsel & 0x0F) << 4) | (func & 0x07))
  44 #define ISERIES_ENCODE_DEVICE(agentid)          \
  45         ((0x10) | ((agentid & 0x20) >> 2) | (agentid & 0x07))
  46
  47 #define ISERIES_GET_DEVICE_FROM_SUBBUS(subbus)          ((subbus >> 5) & 0x7)
  48 #define ISERIES_GET_FUNCTION_FROM_SUBBUS(subbus)        ((subbus >> 2) & 0x7)
  49
  50 /*
  51  * Generate a Direct Select Address for the Hypervisor
  52  */
  53 static inline u64 iseries_ds_addr(struct device_node *node)
  54 {
  55         struct pci_dn *pdn = PCI_DN(node);
  56
  57         return ((u64)pdn->busno << 48) + ((u64)pdn->bussubno << 40)
  58                         + ((u64)0x10 << 32);
  59 }
  60
  61 extern void     iSeries_Device_Information(struct pci_dev*, int);
  62
  63 #endif /* _PLATFORMS_ISERIES_PCI_H */