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