LXR linux/arch/microblaze/include/asm/pci.h

   1/*
   2 * This program is free software; you can redistribute it and/or
   3 * modify it under the terms of the GNU General Public License
   4 * as published by the Free Software Foundation; either version
   5 * 2 of the License, or (at your option) any later version.
   6 *
   7 * Based on powerpc version
   8 */
   9
  10#ifndef __ASM_MICROBLAZE_PCI_H
  11#define __ASM_MICROBLAZE_PCI_H
  12#ifdef __KERNEL__
  13
  14#include <linux/types.h>
  15#include <linux/slab.h>
  16#include <linux/string.h>
  17#include <linux/dma-mapping.h>
  18#include <linux/pci.h>
  19
  20#include <asm/scatterlist.h>
  21#include <asm/io.h>
  22#include <asm/prom.h>
  23#include <asm/pci-bridge.h>
  24
  25#include <asm-generic/pci-dma-compat.h>
  26
  27#define PCIBIOS_MIN_IO          0x1000
  28#define PCIBIOS_MIN_MEM         0x10000000
  29
  30struct pci_dev;
  31
  32/* Values for the `which' argument to sys_pciconfig_iobase syscall.  */
  33#define IOBASE_BRIDGE_NUMBER    0
  34#define IOBASE_MEMORY           1
  35#define IOBASE_IO               2
  36#define IOBASE_ISA_IO           3
  37#define IOBASE_ISA_MEM          4
  38
  39#define pcibios_scan_all_fns(a, b)      0
  40
  41/*
  42 * Set this to 1 if you want the kernel to re-assign all PCI
  43 * bus numbers (don't do that on ppc64 yet !)
  44 */
  45#define pcibios_assign_all_busses()     0
  46
  47static inline void pcibios_penalize_isa_irq(int irq, int active)
  48{
  49        /* We don't do dynamic PCI IRQ allocation */
  50}
  51
  52#ifdef CONFIG_PCI
  53extern void set_pci_dma_ops(struct dma_map_ops *dma_ops);
  54extern struct dma_map_ops *get_pci_dma_ops(void);
  55#else   /* CONFIG_PCI */
  56#define set_pci_dma_ops(d)
  57#define get_pci_dma_ops()       NULL
  58#endif
  59
  60#ifdef CONFIG_PCI
  61static inline void pci_dma_burst_advice(struct pci_dev *pdev,
  62                                        enum pci_dma_burst_strategy *strat,
  63                                        unsigned long *strategy_parameter)
  64{
  65        *strat = PCI_DMA_BURST_INFINITY;
  66        *strategy_parameter = ~0UL;
  67}
  68#endif
  69
  70extern int pci_domain_nr(struct pci_bus *bus);
  71
  72/* Decide whether to display the domain number in /proc */
  73extern int pci_proc_domain(struct pci_bus *bus);
  74
  75struct vm_area_struct;
  76/* Map a range of PCI memory or I/O space for a device into user space */
  77int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
  78                        enum pci_mmap_state mmap_state, int write_combine);
  79
  80/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
  81#define HAVE_PCI_MMAP   1
  82
  83extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
  84                           size_t count);
  85extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
  86                           size_t count);
  87extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
  88                                      struct vm_area_struct *vma,
  89                                      enum pci_mmap_state mmap_state);
  90
  91#define HAVE_PCI_LEGACY 1
  92
  93/* The PCI address space does equal the physical memory
  94 * address space (no IOMMU).  The IDE and SCSI device layers use
  95 * this boolean for bounce buffer decisions.
  96 */
  97#define PCI_DMA_BUS_IS_PHYS     (1)
  98
  99static inline struct resource *pcibios_select_root(struct pci_dev *pdev,
 100                        struct resource *res)
 101{
 102        struct resource *root = NULL;
 103
 104        if (res->flags & IORESOURCE_IO)
 105                root = &ioport_resource;
 106        if (res->flags & IORESOURCE_MEM)
 107                root = &iomem_resource;
 108
 109        return root;
 110}
 111
 112extern void pcibios_claim_one_bus(struct pci_bus *b);
 113
 114extern void pcibios_finish_adding_to_bus(struct pci_bus *bus);
 115
 116extern void pcibios_resource_survey(void);
 117
 118extern struct pci_controller *init_phb_dynamic(struct device_node *dn);
 119extern int remove_phb_dynamic(struct pci_controller *phb);
 120
 121extern struct pci_dev *of_create_pci_dev(struct device_node *node,
 122                                        struct pci_bus *bus, int devfn);
 123
 124extern void of_scan_pci_bridge(struct device_node *node,
 125                                struct pci_dev *dev);
 126
 127extern void of_scan_bus(struct device_node *node, struct pci_bus *bus);
 128extern void of_rescan_bus(struct device_node *node, struct pci_bus *bus);
 129
 130extern int pci_read_irq_line(struct pci_dev *dev);
 131
 132extern int pci_bus_find_capability(struct pci_bus *bus,
 133                                                unsigned int devfn, int cap);
 134
 135struct file;
 136extern pgprot_t pci_phys_mem_access_prot(struct file *file,
 137                                         unsigned long pfn,
 138                                         unsigned long size,
 139                                         pgprot_t prot);
 140
 141#define HAVE_ARCH_PCI_RESOURCE_TO_USER
 142extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
 143                                 const struct resource *rsrc,
 144                                 resource_size_t *start, resource_size_t *end);
 145
 146extern void pcibios_setup_bus_devices(struct pci_bus *bus);
 147extern void pcibios_setup_bus_self(struct pci_bus *bus);
 148
 149/* This part of code was originally in xilinx-pci.h */
 150#ifdef CONFIG_PCI_XILINX
 151extern void __init xilinx_pci_init(void);
 152#else
 153static inline void __init xilinx_pci_init(void) { return; }
 154#endif
 155
 156#endif  /* __KERNEL__ */
 157#endif /* __ASM_MICROBLAZE_PCI_H */
 158