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 */ 171