drivers/pci/hotplug/shpchprm_legacy.h

   1 /*
   2  * SHPCHPRM Legacy: PHP Resource Manager for Non-ACPI/Legacy platform using HRT
   3  *
   4  * Copyright (C) 1995,2001 Compaq Computer Corporation
   5  * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
   6  * Copyright (C) 2001 IBM Corp.
   7  * Copyright (C) 2003-2004 Intel Corporation
   8  *
   9  * All rights reserved.
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or (at
  14  * your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
  19  * NON INFRINGEMENT.  See the GNU General Public License for more
  20  * details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  25  *
  26  * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
  27  *
  28  */
  29
  30 #ifndef _SHPCHPRM_LEGACY_H_
  31 #define _SHPCHPRM_LEGACY_H_
  32
  33 #define ROM_PHY_ADDR    0x0F0000
  34 #define ROM_PHY_LEN     0x00FFFF
  35
  36 struct slot_rt {
  37         u8 dev_func;
  38         u8 primary_bus;
  39         u8 secondary_bus;
  40         u8 max_bus;
  41         u16 io_base;
  42         u16 io_length;
  43         u16 mem_base;
  44         u16 mem_length;
  45         u16 pre_mem_base;
  46         u16 pre_mem_length;
  47 } __attribute__ ((packed));
  48
  49 /* offsets to the hotplug slot resource table registers based on the above structure layout */
  50 enum slot_rt_offsets {
  51         DEV_FUNC = offsetof(struct slot_rt, dev_func),
  52         PRIMARY_BUS = offsetof(struct slot_rt, primary_bus),
  53         SECONDARY_BUS = offsetof(struct slot_rt, secondary_bus),
  54         MAX_BUS = offsetof(struct slot_rt, max_bus),
  55         IO_BASE = offsetof(struct slot_rt, io_base),
  56         IO_LENGTH = offsetof(struct slot_rt, io_length),
  57         MEM_BASE = offsetof(struct slot_rt, mem_base),
  58         MEM_LENGTH = offsetof(struct slot_rt, mem_length),
  59         PRE_MEM_BASE = offsetof(struct slot_rt, pre_mem_base),
  60         PRE_MEM_LENGTH = offsetof(struct slot_rt, pre_mem_length),
  61 };
  62
  63 struct hrt {
  64         char sig0;
  65         char sig1;
  66         char sig2;
  67         char sig3;
  68         u16 unused_IRQ;
  69         u16 PCIIRQ;
  70         u8 number_of_entries;
  71         u8 revision;
  72         u16 reserved1;
  73         u32 reserved2;
  74 } __attribute__ ((packed));
  75
  76 /* offsets to the hotplug resource table registers based on the above structure layout */
  77 enum hrt_offsets {
  78         SIG0 = offsetof(struct hrt, sig0),
  79         SIG1 = offsetof(struct hrt, sig1),
  80         SIG2 = offsetof(struct hrt, sig2),
  81         SIG3 = offsetof(struct hrt, sig3),
  82         UNUSED_IRQ = offsetof(struct hrt, unused_IRQ),
  83         PCIIRQ = offsetof(struct hrt, PCIIRQ),
  84         NUMBER_OF_ENTRIES = offsetof(struct hrt, number_of_entries),
  85         REVISION = offsetof(struct hrt, revision),
  86         HRT_RESERVED1 = offsetof(struct hrt, reserved1),
  87         HRT_RESERVED2 = offsetof(struct hrt, reserved2),
  88 };
  89
  90 struct irq_info {
  91         u8 bus, devfn;          /* bus, device and function */
  92         struct {
  93                 u8 link;        /* IRQ line ID, chipset dependent, 0=not routed */
  94                 u16 bitmap;     /* Available IRQs */
  95         } __attribute__ ((packed)) irq[4];
  96         u8 slot;                /* slot number, 0=onboard */
  97         u8 rfu;
  98 } __attribute__ ((packed));
  99
 100 struct irq_routing_table {
 101         u32 signature;          /* PIRQ_SIGNATURE should be here */
 102         u16 version;            /* PIRQ_VERSION */
 103         u16 size;                       /* Table size in bytes */
 104         u8 rtr_bus, rtr_devfn;  /* Where the interrupt router lies */
 105         u16 exclusive_irqs;     /* IRQs devoted exclusively to PCI usage */
 106         u16 rtr_vendor, rtr_device;     /* Vendor and device ID of interrupt router */
 107         u32 miniport_data;      /* Crap */
 108         u8 rfu[11];
 109         u8 checksum;            /* Modulo 256 checksum must give zero */
 110         struct irq_info slots[0];
 111 } __attribute__ ((packed));
 112
 113 #endif                          /* _SHPCHPRM_LEGACY_H_ */