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() \ 44 (pci_has_flag(PCI_REASSIGN_ALL_BUS)) 45 46 static inline void pcibios_set_master(struct pci_dev *dev) 47 { 48 /* No special bus mastering setup handling */ 49 } 50 51 static inline void pcibios_penalize_isa_irq(int irq, int active) 52 { 53 /* We don't do dynamic PCI IRQ allocation */ 54 } 55 56 #ifdef CONFIG_PCI 57 extern void set_pci_dma_ops(struct dma_map_ops *dma_ops); 58 extern struct dma_map_ops *get_pci_dma_ops(void); 59 #else /* CONFIG_PCI */ 60 #define set_pci_dma_ops(d) 61 #define get_pci_dma_ops() NULL 62 #endif 63 64 #ifdef CONFIG_PCI 65 static inline void pci_dma_burst_advice(struct pci_dev *pdev, 66 enum pci_dma_burst_strategy *strat, 67 unsigned long *strategy_parameter) 68 { 69 *strat = PCI_DMA_BURST_INFINITY; 70 *strategy_parameter = ~0UL; 71 } 72 #endif 73 74 extern int pci_domain_nr(struct pci_bus *bus); 75 76 /* Decide whether to display the domain number in /proc */ 77 extern int pci_proc_domain(struct pci_bus *bus); 78 79 struct vm_area_struct; 80 /* Map a range of PCI memory or I/O space for a device into user space */ 81 int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma, 82 enum pci_mmap_state mmap_state, int write_combine); 83 84 /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */ 85 #define HAVE_PCI_MMAP 1 86 87 extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val, 88 size_t count); 89 extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val, 90 size_t count); 91 extern int pci_mmap_legacy_page_range(struct pci_bus *bus, 92 struct vm_area_struct *vma, 93 enum pci_mmap_state mmap_state); 94 95 #define HAVE_PCI_LEGACY 1 96 97 /* pci_unmap_{page,single} is a nop so... */ 98 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) 99 #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) 100 #define pci_unmap_addr(PTR, ADDR_NAME) (0) 101 #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0) 102 #define pci_unmap_len(PTR, LEN_NAME) (0) 103 #define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0) 104 105 /* The PCI address space does equal the physical memory 106 * address space (no IOMMU). The IDE and SCSI device layers use 107 * this boolean for bounce buffer decisions. 108 */ 109 #define PCI_DMA_BUS_IS_PHYS (1) 110 111 extern void pcibios_resource_to_bus(struct pci_dev *dev, 112 struct pci_bus_region *region, 113 struct resource *res); 114 115 extern void pcibios_bus_to_resource(struct pci_dev *dev, 116 struct resource *res, 117 struct pci_bus_region *region); 118 119 static inline struct resource *pcibios_select_root(struct pci_dev *pdev, 120 struct resource *res) 121 { 122 struct resource *root = NULL; 123 124 if (res->flags & IORESOURCE_IO) 125 root = &ioport_resource; 126 if (res->flags & IORESOURCE_MEM) 127 root = &iomem_resource; 128 129 return root; 130 } 131 132 extern void pcibios_claim_one_bus(struct pci_bus *b); 133 134 extern void pcibios_finish_adding_to_bus(struct pci_bus *bus); 135 136 extern void pcibios_resource_survey(void); 137 138 extern struct pci_controller *init_phb_dynamic(struct device_node *dn); 139 extern int remove_phb_dynamic(struct pci_controller *phb); 140 141 extern struct pci_dev *of_create_pci_dev(struct device_node *node, 142 struct pci_bus *bus, int devfn); 143 144 extern void of_scan_pci_bridge(struct device_node *node, 145 struct pci_dev *dev); 146 147 extern void of_scan_bus(struct device_node *node, struct pci_bus *bus); 148 extern void of_rescan_bus(struct device_node *node, struct pci_bus *bus); 149 150 extern int pci_read_irq_line(struct pci_dev *dev); 151 152 extern int pci_bus_find_capability(struct pci_bus *bus, 153 unsigned int devfn, int cap); 154 155 struct file; 156 extern pgprot_t pci_phys_mem_access_prot(struct file *file, 157 unsigned long pfn, 158 unsigned long size, 159 pgprot_t prot); 160 161 #define HAVE_ARCH_PCI_RESOURCE_TO_USER 162 extern void pci_resource_to_user(const struct pci_dev *dev, int bar, 163 const struct resource *rsrc, 164 resource_size_t *start, resource_size_t *end); 165 166 extern void pcibios_setup_bus_devices(struct pci_bus *bus); 167 extern void pcibios_setup_bus_self(struct pci_bus *bus); 168 169 /* This part of code was originaly in xilinx-pci.h */ 170 #ifdef CONFIG_PCI_XILINX 171 extern void __init xilinx_pci_init(void); 172 #else 173 static inline void __init xilinx_pci_init(void) { return; } 174 #endif 175 176 #endif /* __KERNEL__ */ 177 #endif /* __ASM_MICROBLAZE_PCI_H */ 178