fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-xtensa / pci-bridge.h
blob00fcbd7c534a472523b488e71ec382dc4dda88dd
1 /*
2 * include/asm-xtensa/pci-bridge.h
4 * This file is subject to the terms and conditions of the GNU General
5 * Public License. See the file "COPYING" in the main directory of
6 * this archive for more details.
8 * Copyright (C) 2005 Tensilica Inc.
9 */
11 #ifndef _XTENSA_PCI_BRIDGE_H
12 #define _XTENSA_PCI_BRIDGE_H
14 #ifdef __KERNEL__
16 struct device_node;
17 struct pci_controller;
20 * pciauto_bus_scan() enumerates the pci space.
23 extern int pciauto_bus_scan(struct pci_controller *, int);
25 struct pci_space {
26 unsigned long start;
27 unsigned long end;
28 unsigned long base;
32 * Structure of a PCI controller (host bridge)
35 struct pci_controller {
36 int index; /* used for pci_controller_num */
37 struct pci_controller *next;
38 struct pci_bus *bus;
39 void *arch_data;
41 int first_busno;
42 int last_busno;
44 struct pci_ops *ops;
45 volatile unsigned int *cfg_addr;
46 volatile unsigned char *cfg_data;
48 /* Currently, we limit ourselves to 1 IO range and 3 mem
49 * ranges since the common pci_bus structure can't handle more
51 struct resource io_resource;
52 struct resource mem_resources[3];
53 int mem_resource_count;
55 /* Host bridge I/O and Memory space
56 * Used for BAR placement algorithms
58 struct pci_space io_space;
59 struct pci_space mem_space;
61 /* Return the interrupt number fo a device. */
62 int (*map_irq)(struct pci_dev*, u8, u8);
66 static inline void pcibios_init_resource(struct resource *res,
67 unsigned long start, unsigned long end, int flags, char *name)
69 res->start = start;
70 res->end = end;
71 res->flags = flags;
72 res->name = name;
73 res->parent = NULL;
74 res->sibling = NULL;
75 res->child = NULL;
79 /* These are used for config access before all the PCI probing has been done. */
80 int early_read_config_byte(struct pci_controller*, int, int, int, u8*);
81 int early_read_config_word(struct pci_controller*, int, int, int, u16*);
82 int early_read_config_dword(struct pci_controller*, int, int, int, u32*);
83 int early_write_config_byte(struct pci_controller*, int, int, int, u8);
84 int early_write_config_word(struct pci_controller*, int, int, int, u16);
85 int early_write_config_dword(struct pci_controller*, int, int, int, u32);
87 #endif /* __KERNEL__ */
88 #endif /* _XTENSA_PCI_BRIDGE_H */