release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/include/asm/vr41xx/pci.h

   1 /*
   2  *  Include file for NEC VR4100 series PCI Control Unit.
   3  *
   4  *  Copyright (C) 2004-2005  Yoichi Yuasa <yuasa@linux-mips.org>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20 #ifndef __NEC_VR41XX_PCI_H
  21 #define __NEC_VR41XX_PCI_H
  22
  23 #define PCI_MASTER_ADDRESS_MASK 0x7fffffffU
  24
  25 struct pci_master_address_conversion {
  26         uint32_t bus_base_address;
  27         uint32_t address_mask;
  28         uint32_t pci_base_address;
  29 };
  30
  31 struct pci_target_address_conversion {
  32         uint32_t address_mask;
  33         uint32_t bus_base_address;
  34 };
  35
  36 typedef enum {
  37         CANNOT_LOCK_FROM_DEVICE,
  38         CAN_LOCK_FROM_DEVICE,
  39 } pci_exclusive_access_t;
  40
  41 struct pci_mailbox_address {
  42         uint32_t base_address;
  43 };
  44
  45 struct pci_target_address_window {
  46         uint32_t base_address;
  47 };
  48
  49 typedef enum {
  50         PCI_ARBITRATION_MODE_FAIR,
  51         PCI_ARBITRATION_MODE_ALTERNATE_0,
  52         PCI_ARBITRATION_MODE_ALTERNATE_B,
  53 } pci_arbiter_priority_control_t;
  54
  55 typedef enum {
  56         PCI_TAKE_AWAY_GNT_DISABLE,
  57         PCI_TAKE_AWAY_GNT_ENABLE,
  58 } pci_take_away_gnt_mode_t;
  59
  60 struct pci_controller_unit_setup {
  61         struct pci_master_address_conversion *master_memory1;
  62         struct pci_master_address_conversion *master_memory2;
  63
  64         struct pci_target_address_conversion *target_memory1;
  65         struct pci_target_address_conversion *target_memory2;
  66
  67         struct pci_master_address_conversion *master_io;
  68
  69         pci_exclusive_access_t exclusive_access;
  70
  71         uint32_t pci_clock_max;
  72         uint8_t wait_time_limit_from_irdy_to_trdy;      /* Only VR4122 is supported */
  73
  74         struct pci_mailbox_address *mailbox;
  75         struct pci_target_address_window *target_window1;
  76         struct pci_target_address_window *target_window2;
  77
  78         uint8_t master_latency_timer;
  79         uint8_t retry_limit;
  80
  81         pci_arbiter_priority_control_t arbiter_priority_control;
  82         pci_take_away_gnt_mode_t take_away_gnt_mode;
  83
  84         struct resource *mem_resource;
  85         struct resource *io_resource;
  86 };
  87
  88 extern void vr41xx_pciu_setup(struct pci_controller_unit_setup *setup);
  89
  90 #endif /* __NEC_VR41XX_PCI_H */