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 static inline void pci_dma_burst_advice(struct pci_dev *pdev, 54 enum pci_dma_burst_strategy *strat, 55 unsigned long *strategy_parameter) 56 { 57 *strat = PCI_DMA_BURST_INFINITY; 58 *strategy_parameter = ~0UL; 59 } 60 #endif 61 62 extern int pci_domain_nr(struct pci_bus *bus); 63 64 /* Decide whether to display the domain number in /proc */ 65 extern int pci_proc_domain(struct pci_bus *bus); 66 67 struct vm_area_struct; 68 /* Map a range of PCI memory or I/O space for a device into user space */ 69 int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma, 70 enum pci_mmap_state mmap_state, int write_combine); 71 72 /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */ 73 #define HAVE_PCI_MMAP 1 74 75 extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val, 76 size_t count); 77 extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val, 78 size_t count); 79 extern int pci_mmap_legacy_page_range(struct pci_bus *bus, 80 struct vm_area_struct *vma, 81 enum pci_mmap_state mmap_state); 82 83 #define HAVE_PCI_LEGACY 1 84 85 /* The PCI address space does equal the physical memory 86 * address space (no IOMMU). The IDE and SCSI device layers use 87 * this boolean for bounce buffer decisions. 88 */ 89 #define PCI_DMA_BUS_IS_PHYS (1) 90 91 static inline struct resource *pcibios_select_root(struct pci_dev *pdev, 92 struct resource *res) 93 { 94 struct resource *root = NULL; 95 96 if (res->flags & IORESOURCE_IO) 97 root = &ioport_resource; 98 if (res->flags & IORESOURCE_MEM) 99 root = &iomem_resource; 100 101 return root; 102 } 103 104 extern void pcibios_claim_one_bus(struct pci_bus *b); 105 106 extern void pcibios_finish_adding_to_bus(struct pci_bus *bus); 107 108 extern void pcibios_resource_survey(void); 109 110 extern struct pci_controller *init_phb_dynamic(struct device_node *dn); 111 extern int remove_phb_dynamic(struct pci_controller *phb); 112 113 extern struct pci_dev *of_create_pci_dev(struct device_node *node, 114 struct pci_bus *bus, int devfn); 115 116 extern void of_scan_pci_bridge(struct device_node *node, 117 struct pci_dev *dev); 118 119 extern void of_scan_bus(struct device_node *node, struct pci_bus *bus); 120 extern void of_rescan_bus(struct device_node *node, struct pci_bus *bus); 121 122 extern int pci_bus_find_capability(struct pci_bus *bus, 123 unsigned int devfn, int cap); 124 125 struct file; 126 extern pgprot_t pci_phys_mem_access_prot(struct file *file, 127 unsigned long pfn, 128 unsigned long size, 129 pgprot_t prot); 130 131 #define HAVE_ARCH_PCI_RESOURCE_TO_USER 132 extern void pci_resource_to_user(const struct pci_dev *dev, int bar, 133 const struct resource *rsrc, 134 resource_size_t *start, resource_size_t *end); 135 136 extern void pcibios_setup_bus_devices(struct pci_bus *bus); 137 extern void pcibios_setup_bus_self(struct pci_bus *bus); 138 139 /* This part of code was originally in xilinx-pci.h */ 140 #ifdef CONFIG_PCI_XILINX 141 extern void __init xilinx_pci_init(void); 142 #else 143 static inline void __init xilinx_pci_init(void) { return; } 144 #endif 145 146 #endif /* __KERNEL__ */ 147 #endif /* __ASM_MICROBLAZE_PCI_H */ 148