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
  28 struct 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
  45 static 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
  51 extern void set_pci_dma_ops(struct dma_map_ops *dma_ops);
  52 extern 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
  59 static 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
  68 extern int pci_domain_nr(struct pci_bus *bus);
  69
  70 /* Decide whether to display the domain number in /proc */
  71 extern int pci_proc_domain(struct pci_bus *bus);
  72
  73 struct vm_area_struct;
  74 /* Map a range of PCI memory or I/O space for a device into user space */
  75 int 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
  81 extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
  82                            size_t count);
  83 extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
  84                            size_t count);
  85 extern 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
  97 extern void pcibios_resource_to_bus(struct pci_dev *dev,
  98                         struct pci_bus_region *region,
  99                         struct resource *res);
 100
 101 extern void pcibios_bus_to_resource(struct pci_dev *dev,
 102                         struct resource *res,
 103                         struct pci_bus_region *region);
 104
 105 static 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
 118 extern void pcibios_claim_one_bus(struct pci_bus *b);
 119
 120 extern void pcibios_finish_adding_to_bus(struct pci_bus *bus);
 121
 122 extern void pcibios_resource_survey(void);
 123
 124 extern struct pci_controller *init_phb_dynamic(struct device_node *dn);
 125 extern int remove_phb_dynamic(struct pci_controller *phb);
 126
 127 extern struct pci_dev *of_create_pci_dev(struct device_node *node,
 128                                         struct pci_bus *bus, int devfn);
 129
 130 extern void of_scan_pci_bridge(struct device_node *node,
 131                                 struct pci_dev *dev);
 132
 133 extern void of_scan_bus(struct device_node *node, struct pci_bus *bus);
 134 extern void of_rescan_bus(struct device_node *node, struct pci_bus *bus);
 135
 136 extern int pci_read_irq_line(struct pci_dev *dev);
 137
 138 extern int pci_bus_find_capability(struct pci_bus *bus,
 139                                                 unsigned int devfn, int cap);
 140
 141 struct file;
 142 extern 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
 148 extern 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
 152 extern void pcibios_setup_bus_devices(struct pci_bus *bus);
 153 extern 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
 157 extern void __init xilinx_pci_init(void);
 158 #else
 159 static 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 */