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 /* 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 #ifdef CONFIG_PCI 46 static inline void pci_dma_burst_advice(struct pci_dev *pdev, 47 enum pci_dma_burst_strategy *strat, 48 unsigned long *strategy_parameter) 49 { 50 *strat = PCI_DMA_BURST_INFINITY; 51 *strategy_parameter = ~0UL; 52 } 53 #endif 54 55 extern int pci_domain_nr(struct pci_bus *bus); 56 57 /* Decide whether to display the domain number in /proc */ 58 extern int pci_proc_domain(struct pci_bus *bus); 59 60 struct vm_area_struct; 61 /* Map a range of PCI memory or I/O space for a device into user space */ 62 int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma, 63 enum pci_mmap_state mmap_state, int write_combine); 64 65 /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */ 66 #define HAVE_PCI_MMAP 1 67 68 extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val, 69 size_t count); 70 extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val, 71 size_t count); 72 extern int pci_mmap_legacy_page_range(struct pci_bus *bus, 73 struct vm_area_struct *vma, 74 enum pci_mmap_state mmap_state); 75 76 #define HAVE_PCI_LEGACY 1 77 78 /* The PCI address space does equal the physical memory 79 * address space (no IOMMU). The IDE and SCSI device layers use 80 * this boolean for bounce buffer decisions. 81 */ 82 #define PCI_DMA_BUS_IS_PHYS (1) 83 84 static inline struct resource *pcibios_select_root(struct pci_dev *pdev, 85 struct resource *res) 86 { 87 struct resource *root = NULL; 88 89 if (res->flags & IORESOURCE_IO) 90 root = &ioport_resource; 91 if (res->flags & IORESOURCE_MEM) 92 root = &iomem_resource; 93 94 return root; 95 } 96 97 extern void pcibios_claim_one_bus(struct pci_bus *b); 98 99 extern void pcibios_finish_adding_to_bus(struct pci_bus *bus); 100 101 extern void pcibios_resource_survey(void); 102 103 struct file; 104 extern pgprot_t pci_phys_mem_access_prot(struct file *file, 105 unsigned long pfn, 106 unsigned long size, 107 pgprot_t prot); 108 109 #define HAVE_ARCH_PCI_RESOURCE_TO_USER 110 extern void pci_resource_to_user(const struct pci_dev *dev, int bar, 111 const struct resource *rsrc, 112 resource_size_t *start, resource_size_t *end); 113 114 extern void pcibios_setup_bus_devices(struct pci_bus *bus); 115 extern void pcibios_setup_bus_self(struct pci_bus *bus); 116 117 /* This part of code was originally in xilinx-pci.h */ 118 #ifdef CONFIG_PCI_XILINX 119 extern void __init xilinx_pci_init(void); 120 #else 121 static inline void __init xilinx_pci_init(void) { return; } 122 #endif 123 124 #endif /* __KERNEL__ */ 125 #endif /* __ASM_MICROBLAZE_PCI_H */ 126