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() \
  44         (pci_has_flag(PCI_REASSIGN_ALL_BUS))
  45
  46 static inline void pcibios_set_master(struct pci_dev *dev)
  47 {
  48         /* No special bus mastering setup handling */
  49 }
  50
  51 static inline void pcibios_penalize_isa_irq(int irq, int active)
  52 {
  53         /* We don't do dynamic PCI IRQ allocation */
  54 }
  55
  56 #ifdef CONFIG_PCI
  57 extern void set_pci_dma_ops(struct dma_map_ops *dma_ops);
  58 extern struct dma_map_ops *get_pci_dma_ops(void);
  59 #else   /* CONFIG_PCI */
  60 #define set_pci_dma_ops(d)
  61 #define get_pci_dma_ops()       NULL
  62 #endif
  63
  64 #ifdef CONFIG_PCI
  65 static inline void pci_dma_burst_advice(struct pci_dev *pdev,
  66                                         enum pci_dma_burst_strategy *strat,
  67                                         unsigned long *strategy_parameter)
  68 {
  69         *strat = PCI_DMA_BURST_INFINITY;
  70         *strategy_parameter = ~0UL;
  71 }
  72 #endif
  73
  74 extern int pci_domain_nr(struct pci_bus *bus);
  75
  76 /* Decide whether to display the domain number in /proc */
  77 extern int pci_proc_domain(struct pci_bus *bus);
  78
  79 struct vm_area_struct;
  80 /* Map a range of PCI memory or I/O space for a device into user space */
  81 int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
  82                         enum pci_mmap_state mmap_state, int write_combine);
  83
  84 /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
  85 #define HAVE_PCI_MMAP   1
  86
  87 extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
  88                            size_t count);
  89 extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
  90                            size_t count);
  91 extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
  92                                       struct vm_area_struct *vma,
  93                                       enum pci_mmap_state mmap_state);
  94
  95 #define HAVE_PCI_LEGACY 1
  96
  97 /* The PCI address space does equal the physical memory
  98  * address space (no IOMMU).  The IDE and SCSI device layers use
  99  * this boolean for bounce buffer decisions.
 100  */
 101 #define PCI_DMA_BUS_IS_PHYS     (1)
 102
 103 extern void pcibios_resource_to_bus(struct pci_dev *dev,
 104                         struct pci_bus_region *region,
 105                         struct resource *res);
 106
 107 extern void pcibios_bus_to_resource(struct pci_dev *dev,
 108                         struct resource *res,
 109                         struct pci_bus_region *region);
 110
 111 static inline struct resource *pcibios_select_root(struct pci_dev *pdev,
 112                         struct resource *res)
 113 {
 114         struct resource *root = NULL;
 115
 116         if (res->flags & IORESOURCE_IO)
 117                 root = &ioport_resource;
 118         if (res->flags & IORESOURCE_MEM)
 119                 root = &iomem_resource;
 120
 121         return root;
 122 }
 123
 124 extern void pcibios_claim_one_bus(struct pci_bus *b);
 125
 126 extern void pcibios_finish_adding_to_bus(struct pci_bus *bus);
 127
 128 extern void pcibios_resource_survey(void);
 129
 130 extern struct pci_controller *init_phb_dynamic(struct device_node *dn);
 131 extern int remove_phb_dynamic(struct pci_controller *phb);
 132
 133 extern struct pci_dev *of_create_pci_dev(struct device_node *node,
 134                                         struct pci_bus *bus, int devfn);
 135
 136 extern void of_scan_pci_bridge(struct device_node *node,
 137                                 struct pci_dev *dev);
 138
 139 extern void of_scan_bus(struct device_node *node, struct pci_bus *bus);
 140 extern void of_rescan_bus(struct device_node *node, struct pci_bus *bus);
 141
 142 extern int pci_read_irq_line(struct pci_dev *dev);
 143
 144 extern int pci_bus_find_capability(struct pci_bus *bus,
 145                                                 unsigned int devfn, int cap);
 146
 147 struct file;
 148 extern pgprot_t pci_phys_mem_access_prot(struct file *file,
 149                                          unsigned long pfn,
 150                                          unsigned long size,
 151                                          pgprot_t prot);
 152
 153 #define HAVE_ARCH_PCI_RESOURCE_TO_USER
 154 extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
 155                                  const struct resource *rsrc,
 156                                  resource_size_t *start, resource_size_t *end);
 157
 158 extern void pcibios_setup_bus_devices(struct pci_bus *bus);
 159 extern void pcibios_setup_bus_self(struct pci_bus *bus);
 160
 161 /* This part of code was originally in xilinx-pci.h */
 162 #ifdef CONFIG_PCI_XILINX
 163 extern void __init xilinx_pci_init(void);
 164 #else
 165 static inline void __init xilinx_pci_init(void) { return; }
 166 #endif
 167
 168 #include <asm-generic/pci-dma-compat.h>
 169
 170 #endif  /* __KERNEL__ */
 171 #endif /* __ASM_MICROBLAZE_PCI_H */