1 #include <linux/of.h> /* linux/of.h gets to determine #include ordering */ 2 #ifndef _POWERPC_PROM_H 3 #define _POWERPC_PROM_H 4 #ifdef __KERNEL__ 5 6 /* 7 * Definitions for talking to the Open Firmware PROM on 8 * Power Macintosh computers. 9 * 10 * Copyright (C) 1996-2005 Paul Mackerras. 11 * 12 * Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp. 13 * 14 * This program is free software; you can redistribute it and/or 15 * modify it under the terms of the GNU General Public License 16 * as published by the Free Software Foundation; either version 17 * 2 of the License, or (at your option) any later version. 18 */ 19 #include <linux/types.h> 20 #include <linux/of_fdt.h> 21 #include <linux/of_address.h> 22 #include <linux/of_irq.h> 23 #include <linux/proc_fs.h> 24 #include <linux/platform_device.h> 25 #include <asm/irq.h> 26 #include <asm/atomic.h> 27 28 #define HAVE_ARCH_DEVTREE_FIXUPS 29 30 #ifdef CONFIG_PPC32 31 /* 32 * PCI <-> OF matching functions 33 * (XXX should these be here?) 34 */ 35 struct pci_bus; 36 struct pci_dev; 37 extern int pci_device_from_OF_node(struct device_node *node, 38 u8* bus, u8* devfn); 39 extern struct device_node* pci_busdev_to_OF_node(struct pci_bus *, int); 40 extern struct device_node* pci_device_to_OF_node(struct pci_dev *); 41 extern void pci_create_OF_bus_map(void); 42 #endif 43 44 /* 45 * OF address retreival & translation 46 */ 47 48 /* Translate a DMA address from device space to CPU space */ 49 extern u64 of_translate_dma_address(struct device_node *dev, 50 const u32 *in_addr); 51 52 /* Extract an address from a device, returns the region size and 53 * the address space flags too. The PCI version uses a BAR number 54 * instead of an absolute index 55 */ 56 extern const u32 *of_get_address(struct device_node *dev, int index, 57 u64 *size, unsigned int *flags); 58 #ifdef CONFIG_PCI 59 extern const u32 *of_get_pci_address(struct device_node *dev, int bar_no, 60 u64 *size, unsigned int *flags); 61 #else 62 static inline const u32 *of_get_pci_address(struct device_node *dev, 63 int bar_no, u64 *size, unsigned int *flags) 64 { 65 return NULL; 66 } 67 #endif /* CONFIG_PCI */ 68 69 #ifdef CONFIG_PCI 70 extern int of_pci_address_to_resource(struct device_node *dev, int bar, 71 struct resource *r); 72 #else 73 static inline int of_pci_address_to_resource(struct device_node *dev, int bar, 74 struct resource *r) 75 { 76 return -ENOSYS; 77 } 78 #endif /* CONFIG_PCI */ 79 80 #ifdef CONFIG_PCI 81 extern unsigned long pci_address_to_pio(phys_addr_t address); 82 #else 83 static inline unsigned long pci_address_to_pio(phys_addr_t address) 84 { 85 return (unsigned long)-1; 86 } 87 #endif /* CONFIG_PCI */ 88 89 /* Parse the ibm,dma-window property of an OF node into the busno, phys and 90 * size parameters. 91 */ 92 void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop, 93 unsigned long *busno, unsigned long *phys, unsigned long *size); 94 95 extern void kdump_move_device_tree(void); 96 97 /* CPU OF node matching */ 98 struct device_node *of_get_cpu_node(int cpu, unsigned int *thread); 99 100 /* cache lookup */ 101 struct device_node *of_find_next_cache_node(struct device_node *np); 102 103 /* Get the MAC address */ 104 extern const void *of_get_mac_address(struct device_node *np); 105 106 #ifdef CONFIG_NUMA 107 extern int of_node_to_nid(struct device_node *device); 108 #else 109 static inline int of_node_to_nid(struct device_node *device) { return 0; } 110 #endif 111 #define of_node_to_nid of_node_to_nid 112 113 /** 114 * of_irq_map_pci - Resolve the interrupt for a PCI device 115 * @pdev: the device whose interrupt is to be resolved 116 * @out_irq: structure of_irq filled by this function 117 * 118 * This function resolves the PCI interrupt for a given PCI device. If a 119 * device-node exists for a given pci_dev, it will use normal OF tree 120 * walking. If not, it will implement standard swizzling and walk up the 121 * PCI tree until an device-node is found, at which point it will finish 122 * resolving using the OF tree walking. 123 */ 124 struct pci_dev; 125 extern int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq); 126 127 extern void of_instantiate_rtc(void); 128 129 #endif /* __KERNEL__ */ 130 #endif /* _POWERPC_PROM_H */ 131