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
  30 struct 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
  47 static 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
  53 extern void set_pci_dma_ops(struct dma_map_ops *dma_ops);
  54 extern 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
  61 static 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
  70 extern int pci_domain_nr(struct pci_bus *bus);
  71
  72 /* Decide whether to display the domain number in /proc */
  73 extern int pci_proc_domain(struct pci_bus *bus);
  74
  75 struct vm_area_struct;
  76 /* Map a range of PCI memory or I/O space for a device into user space */
  77 int 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
  83 extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
  84                            size_t count);
  85 extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
  86                            size_t count);
  87 extern 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
  99 static 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
 112 extern void pcibios_claim_one_bus(struct pci_bus *b);
 113
 114 extern void pcibios_finish_adding_to_bus(struct pci_bus *bus);
 115
 116 extern void pcibios_resource_survey(void);
 117
 118 extern struct pci_controller *init_phb_dynamic(struct device_node *dn);
 119 extern int remove_phb_dynamic(struct pci_controller *phb);
 120
 121 extern struct pci_dev *of_create_pci_dev(struct device_node *node,
 122                                         struct pci_bus *bus, int devfn);
 123
 124 extern void of_scan_pci_bridge(struct device_node *node,
 125                                 struct pci_dev *dev);
 126
 127 extern void of_scan_bus(struct device_node *node, struct pci_bus *bus);
 128 extern void of_rescan_bus(struct device_node *node, struct pci_bus *bus);
 129
 130 extern int pci_read_irq_line(struct pci_dev *dev);
 131
 132 extern int pci_bus_find_capability(struct pci_bus *bus,
 133                                                 unsigned int devfn, int cap);
 134
 135 struct file;
 136 extern 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
 142 extern 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
 146 extern void pcibios_setup_bus_devices(struct pci_bus *bus);
 147 extern 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
 151 extern void __init xilinx_pci_init(void);
 152 #else
 153 static inline void __init xilinx_pci_init(void) { return; }
 154 #endif
 155
 156 #endif  /* __KERNEL__ */
 157 #endif /* __ASM_MICROBLAZE_PCI_H */