1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3 *  Include file for NEC VR4100 series PCI Control Unit.
 4 *
 5 *  Copyright (C) 2004-2005  Yoichi Yuasa <yuasa@linux-mips.org>
 6 */
 7#ifndef __NEC_VR41XX_PCI_H
 8#define __NEC_VR41XX_PCI_H
 9
10#define PCI_MASTER_ADDRESS_MASK 0x7fffffffU
11
12struct pci_master_address_conversion {
13	uint32_t bus_base_address;
14	uint32_t address_mask;
15	uint32_t pci_base_address;
16};
17
18struct pci_target_address_conversion {
19	uint32_t address_mask;
20	uint32_t bus_base_address;
21};
22
23typedef enum {
24	CANNOT_LOCK_FROM_DEVICE,
25	CAN_LOCK_FROM_DEVICE,
26} pci_exclusive_access_t;
27
28struct pci_mailbox_address {
29	uint32_t base_address;
30};
31
32struct pci_target_address_window {
33	uint32_t base_address;
34};
35
36typedef enum {
37	PCI_ARBITRATION_MODE_FAIR,
38	PCI_ARBITRATION_MODE_ALTERNATE_0,
39	PCI_ARBITRATION_MODE_ALTERNATE_B,
40} pci_arbiter_priority_control_t;
41
42typedef enum {
43	PCI_TAKE_AWAY_GNT_DISABLE,
44	PCI_TAKE_AWAY_GNT_ENABLE,
45} pci_take_away_gnt_mode_t;
46
47struct pci_controller_unit_setup {
48	struct pci_master_address_conversion *master_memory1;
49	struct pci_master_address_conversion *master_memory2;
50
51	struct pci_target_address_conversion *target_memory1;
52	struct pci_target_address_conversion *target_memory2;
53
54	struct pci_master_address_conversion *master_io;
55
56	pci_exclusive_access_t exclusive_access;
57
58	uint32_t pci_clock_max;
59	uint8_t wait_time_limit_from_irdy_to_trdy;	/* Only VR4122 is supported */
60
61	struct pci_mailbox_address *mailbox;
62	struct pci_target_address_window *target_window1;
63	struct pci_target_address_window *target_window2;
64
65	uint8_t master_latency_timer;
66	uint8_t retry_limit;
67
68	pci_arbiter_priority_control_t arbiter_priority_control;
69	pci_take_away_gnt_mode_t take_away_gnt_mode;
70
71	struct resource *mem_resource;
72	struct resource *io_resource;
73};
74
75extern void vr41xx_pciu_setup(struct pci_controller_unit_setup *setup);
76
77#endif /* __NEC_VR41XX_PCI_H */