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Linux/arch/microblaze/include/asm/pci.h

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  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_bus_find_capability(struct pci_bus *bus,
131                                                 unsigned int devfn, int cap);
132 
133 struct file;
134 extern pgprot_t pci_phys_mem_access_prot(struct file *file,
135                                          unsigned long pfn,
136                                          unsigned long size,
137                                          pgprot_t prot);
138 
139 #define HAVE_ARCH_PCI_RESOURCE_TO_USER
140 extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
141                                  const struct resource *rsrc,
142                                  resource_size_t *start, resource_size_t *end);
143 
144 extern void pcibios_setup_bus_devices(struct pci_bus *bus);
145 extern void pcibios_setup_bus_self(struct pci_bus *bus);
146 
147 /* This part of code was originally in xilinx-pci.h */
148 #ifdef CONFIG_PCI_XILINX
149 extern void __init xilinx_pci_init(void);
150 #else
151 static inline void __init xilinx_pci_init(void) { return; }
152 #endif
153 
154 #endif  /* __KERNEL__ */
155 #endif /* __ASM_MICROBLAZE_PCI_H */
156 

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