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 #ifdef CONFIG_PCI 48 static inline void pci_dma_burst_advice(struct pci_dev *pdev, 49 enum pci_dma_burst_strategy *strat, 50 unsigned long *strategy_parameter) 51 { 52 *strat = PCI_DMA_BURST_INFINITY; 53 *strategy_parameter = ~0UL; 54 } 55 #endif 56 57 extern int pci_domain_nr(struct pci_bus *bus); 58 59 /* Decide whether to display the domain number in /proc */ 60 extern int pci_proc_domain(struct pci_bus *bus); 61 62 struct vm_area_struct; 63 /* Map a range of PCI memory or I/O space for a device into user space */ 64 int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma, 65 enum pci_mmap_state mmap_state, int write_combine); 66 67 /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */ 68 #define HAVE_PCI_MMAP 1 69 70 extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val, 71 size_t count); 72 extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val, 73 size_t count); 74 extern int pci_mmap_legacy_page_range(struct pci_bus *bus, 75 struct vm_area_struct *vma, 76 enum pci_mmap_state mmap_state); 77 78 #define HAVE_PCI_LEGACY 1 79 80 /* The PCI address space does equal the physical memory 81 * address space (no IOMMU). The IDE and SCSI device layers use 82 * this boolean for bounce buffer decisions. 83 */ 84 #define PCI_DMA_BUS_IS_PHYS (1) 85 86 static inline struct resource *pcibios_select_root(struct pci_dev *pdev, 87 struct resource *res) 88 { 89 struct resource *root = NULL; 90 91 if (res->flags & IORESOURCE_IO) 92 root = &ioport_resource; 93 if (res->flags & IORESOURCE_MEM) 94 root = &iomem_resource; 95 96 return root; 97 } 98 99 extern void pcibios_claim_one_bus(struct pci_bus *b); 100 101 extern void pcibios_finish_adding_to_bus(struct pci_bus *bus); 102 103 extern void pcibios_resource_survey(void); 104 105 extern struct pci_controller *init_phb_dynamic(struct device_node *dn); 106 extern int remove_phb_dynamic(struct pci_controller *phb); 107 108 extern struct pci_dev *of_create_pci_dev(struct device_node *node, 109 struct pci_bus *bus, int devfn); 110 111 extern void of_scan_pci_bridge(struct device_node *node, 112 struct pci_dev *dev); 113 114 extern void of_scan_bus(struct device_node *node, struct pci_bus *bus); 115 extern void of_rescan_bus(struct device_node *node, struct pci_bus *bus); 116 117 extern int pci_bus_find_capability(struct pci_bus *bus, 118 unsigned int devfn, int cap); 119 120 struct file; 121 extern pgprot_t pci_phys_mem_access_prot(struct file *file, 122 unsigned long pfn, 123 unsigned long size, 124 pgprot_t prot); 125 126 #define HAVE_ARCH_PCI_RESOURCE_TO_USER 127 extern void pci_resource_to_user(const struct pci_dev *dev, int bar, 128 const struct resource *rsrc, 129 resource_size_t *start, resource_size_t *end); 130 131 extern void pcibios_setup_bus_devices(struct pci_bus *bus); 132 extern void pcibios_setup_bus_self(struct pci_bus *bus); 133 134 /* This part of code was originally in xilinx-pci.h */ 135 #ifdef CONFIG_PCI_XILINX 136 extern void __init xilinx_pci_init(void); 137 #else 138 static inline void __init xilinx_pci_init(void) { return; } 139 #endif 140 141 #endif /* __KERNEL__ */ 142 #endif /* __ASM_MICROBLAZE_PCI_H */ 143