LXR linux/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
  25struct pci_master_address_conversion {
  26        uint32_t bus_base_address;
  27        uint32_t address_mask;
  28        uint32_t pci_base_address;
  29};
  30
  31struct pci_target_address_conversion {
  32        uint32_t address_mask;
  33        uint32_t bus_base_address;
  34};
  35
  36typedef enum {
  37        CANNOT_LOCK_FROM_DEVICE,
  38        CAN_LOCK_FROM_DEVICE,
  39} pci_exclusive_access_t;
  40
  41struct pci_mailbox_address {
  42        uint32_t base_address;
  43};
  44
  45struct pci_target_address_window {
  46        uint32_t base_address;
  47};
  48
  49typedef 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
  55typedef enum {
  56        PCI_TAKE_AWAY_GNT_DISABLE,
  57        PCI_TAKE_AWAY_GNT_ENABLE,
  58} pci_take_away_gnt_mode_t;
  59
  60struct 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
  88extern void vr41xx_pciu_setup(struct pci_controller_unit_setup *setup);
  89
  90#endif /* __NEC_VR41XX_PCI_H */
  91