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 */ 166