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#define PCIBIOS_MIN_IO          0x1000
  26#define PCIBIOS_MIN_MEM         0x10000000
  27
  28struct pci_dev;
  29
  30/* Values for the `which' argument to sys_pciconfig_iobase syscall.  */
  31#define IOBASE_BRIDGE_NUMBER    0
  32#define IOBASE_MEMORY           1
  33#define IOBASE_IO               2
  34#define IOBASE_ISA_IO           3
  35#define IOBASE_ISA_MEM          4
  36
  37#define pcibios_scan_all_fns(a, b)      0
  38
  39/*
  40 * Set this to 1 if you want the kernel to re-assign all PCI
  41 * bus numbers (don't do that on ppc64 yet !)
  42 */
  43#define pcibios_assign_all_busses()     0
  44
  45static inline void pcibios_penalize_isa_irq(int irq, int active)
  46{
  47        /* We don't do dynamic PCI IRQ allocation */
  48}
  49
  50#ifdef CONFIG_PCI
  51extern void set_pci_dma_ops(struct dma_map_ops *dma_ops);
  52extern struct dma_map_ops *get_pci_dma_ops(void);
  53#else   /* CONFIG_PCI */
  54#define set_pci_dma_ops(d)
  55#define get_pci_dma_ops()       NULL
  56#endif
  57
  58#ifdef CONFIG_PCI
  59static inline void pci_dma_burst_advice(struct pci_dev *pdev,
  60                                        enum pci_dma_burst_strategy *strat,
  61                                        unsigned long *strategy_parameter)
  62{
  63        *strat = PCI_DMA_BURST_INFINITY;
  64        *strategy_parameter = ~0UL;
  65}
  66#endif
  67
  68extern int pci_domain_nr(struct pci_bus *bus);
  69
  70/* Decide whether to display the domain number in /proc */
  71extern int pci_proc_domain(struct pci_bus *bus);
  72
  73struct vm_area_struct;
  74/* Map a range of PCI memory or I/O space for a device into user space */
  75int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
  76                        enum pci_mmap_state mmap_state, int write_combine);
  77
  78/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
  79#define HAVE_PCI_MMAP   1
  80
  81extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
  82                           size_t count);
  83extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
  84                           size_t count);
  85extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
  86                                      struct vm_area_struct *vma,
  87                                      enum pci_mmap_state mmap_state);
  88
  89#define HAVE_PCI_LEGACY 1
  90
  91/* The PCI address space does equal the physical memory
  92 * address space (no IOMMU).  The IDE and SCSI device layers use
  93 * this boolean for bounce buffer decisions.
  94 */
  95#define PCI_DMA_BUS_IS_PHYS     (1)
  96
  97extern void pcibios_resource_to_bus(struct pci_dev *dev,
  98                        struct pci_bus_region *region,
  99                        struct resource *res);
 100
 101extern void pcibios_bus_to_resource(struct pci_dev *dev,
 102                        struct resource *res,
 103                        struct pci_bus_region *region);
 104
 105static inline struct resource *pcibios_select_root(struct pci_dev *pdev,
 106                        struct resource *res)
 107{
 108        struct resource *root = NULL;
 109
 110        if (res->flags & IORESOURCE_IO)
 111                root = &ioport_resource;
 112        if (res->flags & IORESOURCE_MEM)
 113                root = &iomem_resource;
 114
 115        return root;
 116}
 117
 118extern void pcibios_claim_one_bus(struct pci_bus *b);
 119
 120extern void pcibios_finish_adding_to_bus(struct pci_bus *bus);
 121
 122extern void pcibios_resource_survey(void);
 123
 124extern struct pci_controller *init_phb_dynamic(struct device_node *dn);
 125extern int remove_phb_dynamic(struct pci_controller *phb);
 126
 127extern struct pci_dev *of_create_pci_dev(struct device_node *node,
 128                                        struct pci_bus *bus, int devfn);
 129
 130extern void of_scan_pci_bridge(struct device_node *node,
 131                                struct pci_dev *dev);
 132
 133extern void of_scan_bus(struct device_node *node, struct pci_bus *bus);
 134extern void of_rescan_bus(struct device_node *node, struct pci_bus *bus);
 135
 136extern int pci_read_irq_line(struct pci_dev *dev);
 137
 138extern int pci_bus_find_capability(struct pci_bus *bus,
 139                                                unsigned int devfn, int cap);
 140
 141struct file;
 142extern pgprot_t pci_phys_mem_access_prot(struct file *file,
 143                                         unsigned long pfn,
 144                                         unsigned long size,
 145                                         pgprot_t prot);
 146
 147#define HAVE_ARCH_PCI_RESOURCE_TO_USER
 148extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
 149                                 const struct resource *rsrc,
 150                                 resource_size_t *start, resource_size_t *end);
 151
 152extern void pcibios_setup_bus_devices(struct pci_bus *bus);
 153extern void pcibios_setup_bus_self(struct pci_bus *bus);
 154
 155/* This part of code was originally in xilinx-pci.h */
 156#ifdef CONFIG_PCI_XILINX
 157extern void __init xilinx_pci_init(void);
 158#else
 159static inline void __init xilinx_pci_init(void) { return; }
 160#endif
 161
 162#include <asm-generic/pci-dma-compat.h>
 163
 164#endif  /* __KERNEL__ */
 165#endif /* __ASM_MICROBLAZE_PCI_H */
 166