1/*
 2 * Copyright 2010 Tilera Corporation. All Rights Reserved.
 3 *
 4 *   This program is free software; you can redistribute it and/or
 5 *   modify it under the terms of the GNU General Public License
 6 *   as published by the Free Software Foundation, version 2.
 7 *
 8 *   This program is distributed in the hope that it will be useful, but
 9 *   WITHOUT ANY WARRANTY; without even the implied warranty of
10 *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
11 *   NON INFRINGEMENT.  See the GNU General Public License for
12 *   more details.
13 */
14
15#ifndef _ASM_TILE_PCI_H
16#define _ASM_TILE_PCI_H
17
18#include <linux/pci.h>
19#include <asm-generic/pci_iomap.h>
20
21/*
22 * Structure of a PCI controller (host bridge)
23 */
24struct pci_controller {
25	int index;		/* PCI domain number */
26	struct pci_bus *root_bus;
27
28	int first_busno;
29	int last_busno;
30
31	int hv_cfg_fd[2];	/* config{0,1} fds for this PCIe controller */
32	int hv_mem_fd;		/* fd to Hypervisor for MMIO operations */
33
34	struct pci_ops *ops;
35
36	int irq_base;		/* Base IRQ from the Hypervisor	*/
37	int plx_gen1;		/* flag for PLX Gen 1 configuration */
38
39	/* Address ranges that are routed to this controller/bridge. */
40	struct resource mem_resources[3];
41};
42
43/*
44 * The hypervisor maps the entirety of CPA-space as bus addresses, so
45 * bus addresses are physical addresses.  The networking and block
46 * device layers use this boolean for bounce buffer decisions.
47 */
48#define PCI_DMA_BUS_IS_PHYS     1
49
50int __init tile_pci_init(void);
51int __init pcibios_init(void);
52
53static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr) {}
54
55void __devinit pcibios_fixup_bus(struct pci_bus *bus);
56
57#define	TILE_NUM_PCIE	2
58
59#define pci_domain_nr(bus) (((struct pci_controller *)(bus)->sysdata)->index)
60
61/*
62 * This decides whether to display the domain number in /proc.
63 */
64static inline int pci_proc_domain(struct pci_bus *bus)
65{
66	return 1;
67}
68
69/*
70 * pcibios_assign_all_busses() tells whether or not the bus numbers
71 * should be reassigned, in case the BIOS didn't do it correctly, or
72 * in case we don't have a BIOS and we want to let Linux do it.
73 */
74static inline int pcibios_assign_all_busses(void)
75{
76	return 1;
77}
78
79#define PCIBIOS_MIN_MEM		0
80#define PCIBIOS_MIN_IO		0
81
82/*
83 * This flag tells if the platform is TILEmpower that needs
84 * special configuration for the PLX switch chip.
85 */
86extern int tile_plx_gen1;
87
88/* Use any cpu for PCI. */
89#define cpumask_of_pcibus(bus) cpu_online_mask
90
91/* implement the pci_ DMA API in terms of the generic device dma_ one */
92#include <asm-generic/pci-dma-compat.h>
93
94/* generic pci stuff */
95#include <asm-generic/pci.h>
96
97#endif /* _ASM_TILE_PCI_H */