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[PATCH] mips: update VR41xx CPU-PCI bridge support
[linux-3.10.git] / include / asm-mips / vr41xx / pci.h
1 /*
2  *  Include file for NEC VR4100 series PCI Control Unit.
3  *
4  *  Copyright (C) 2004-2005  Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
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 */