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
 20/*
 21 * Structure of a PCI controller (host bridge)
 22 */
 23struct pci_controller {
 24	int index;		/* PCI domain number */
 25	struct pci_bus *root_bus;
 26
 27	int first_busno;
 28	int last_busno;
 29
 30	int hv_cfg_fd[2];	/* config{0,1} fds for this PCIe controller */
 31	int hv_mem_fd;		/* fd to Hypervisor for MMIO operations */
 32
 33	struct pci_ops *ops;
 34
 35	int irq_base;		/* Base IRQ from the Hypervisor	*/
 36	int plx_gen1;		/* flag for PLX Gen 1 configuration */
 37
 38	/* Address ranges that are routed to this controller/bridge. */
 39	struct resource mem_resources[3];
 40};
 41
 42/*
 43 * The hypervisor maps the entirety of CPA-space as bus addresses, so
 44 * bus addresses are physical addresses.  The networking and block
 45 * device layers use this boolean for bounce buffer decisions.
 46 */
 47#define PCI_DMA_BUS_IS_PHYS     1
 48
 49int __devinit tile_pci_init(void);
 50int __devinit pcibios_init(void);
 51
 52void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
 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/*
 80 * No special bus mastering setup handling.
 81 */
 82static inline void pcibios_set_master(struct pci_dev *dev)
 83{
 84}
 85
 86#define PCIBIOS_MIN_MEM		0
 87#define PCIBIOS_MIN_IO		0
 88
 89/*
 90 * This flag tells if the platform is TILEmpower that needs
 91 * special configuration for the PLX switch chip.
 92 */
 93extern int tile_plx_gen1;
 94
 95/* Use any cpu for PCI. */
 96#define cpumask_of_pcibus(bus) cpu_online_mask
 97
 98/* implement the pci_ DMA API in terms of the generic device dma_ one */
 99#include <asm-generic/pci-dma-compat.h>
100
101/* generic pci stuff */
102#include <asm-generic/pci.h>
103
104#endif /* _ASM_TILE_PCI_H */