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1da177e4 LT |
1 | /* |
2 | * IBM PowerPC Virtual I/O Infrastructure Support. | |
3 | * | |
4 | * Copyright (c) 2003 IBM Corp. | |
5 | * Dave Engebretsen engebret@us.ibm.com | |
6 | * Santiago Leon santil@us.ibm.com | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License | |
10 | * as published by the Free Software Foundation; either version | |
11 | * 2 of the License, or (at your option) any later version. | |
12 | */ | |
13 | ||
14 | #ifndef _ASM_VIO_H | |
15 | #define _ASM_VIO_H | |
16 | ||
17 | #include <linux/config.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/errno.h> | |
20 | #include <linux/device.h> | |
21 | #include <linux/dma-mapping.h> | |
22 | #include <asm/hvcall.h> | |
23 | #include <asm/prom.h> | |
24 | #include <asm/scatterlist.h> | |
25 | /* | |
26 | * Architecture-specific constants for drivers to | |
27 | * extract attributes of the device using vio_get_attribute() | |
28 | */ | |
29 | #define VETH_MAC_ADDR "local-mac-address" | |
30 | #define VETH_MCAST_FILTER_SIZE "ibm,mac-address-filters" | |
31 | ||
32 | /* End architecture-specific constants */ | |
33 | ||
34 | #define h_vio_signal(ua, mode) \ | |
35 | plpar_hcall_norets(H_VIO_SIGNAL, ua, mode) | |
36 | ||
37 | #define VIO_IRQ_DISABLE 0UL | |
38 | #define VIO_IRQ_ENABLE 1UL | |
39 | ||
40 | struct vio_dev; | |
41 | struct vio_driver; | |
42 | struct vio_device_id; | |
43 | struct iommu_table; | |
44 | ||
45 | int vio_register_driver(struct vio_driver *drv); | |
46 | void vio_unregister_driver(struct vio_driver *drv); | |
47 | ||
48 | #ifdef CONFIG_PPC_PSERIES | |
49 | struct vio_dev * __devinit vio_register_device_node( | |
50 | struct device_node *node_vdev); | |
51 | #endif | |
52 | void __devinit vio_unregister_device(struct vio_dev *dev); | |
53 | struct vio_dev *vio_find_node(struct device_node *vnode); | |
54 | ||
55 | const void * vio_get_attribute(struct vio_dev *vdev, void* which, int* length); | |
56 | int vio_get_irq(struct vio_dev *dev); | |
57 | int vio_enable_interrupts(struct vio_dev *dev); | |
58 | int vio_disable_interrupts(struct vio_dev *dev); | |
59 | ||
60 | extern struct dma_mapping_ops vio_dma_ops; | |
61 | ||
62 | extern struct bus_type vio_bus_type; | |
63 | ||
64 | struct vio_device_id { | |
65 | char *type; | |
66 | char *compat; | |
67 | }; | |
68 | ||
69 | struct vio_driver { | |
70 | struct list_head node; | |
71 | char *name; | |
72 | const struct vio_device_id *id_table; /* NULL if wants all devices */ | |
73 | int (*probe) (struct vio_dev *dev, const struct vio_device_id *id); /* New device inserted */ | |
74 | int (*remove) (struct vio_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */ | |
75 | unsigned long driver_data; | |
76 | ||
77 | struct device_driver driver; | |
78 | }; | |
79 | ||
80 | static inline struct vio_driver *to_vio_driver(struct device_driver *drv) | |
81 | { | |
82 | return container_of(drv, struct vio_driver, driver); | |
83 | } | |
84 | ||
85 | /* | |
86 | * The vio_dev structure is used to describe virtual I/O devices. | |
87 | */ | |
88 | struct vio_dev { | |
89 | struct iommu_table *iommu_table; /* vio_map_* uses this */ | |
90 | char *name; | |
91 | char *type; | |
92 | uint32_t unit_address; | |
93 | unsigned int irq; | |
94 | ||
95 | struct device dev; | |
96 | }; | |
97 | ||
98 | static inline struct vio_dev *to_vio_dev(struct device *dev) | |
99 | { | |
100 | return container_of(dev, struct vio_dev, dev); | |
101 | } | |
102 | ||
103 | #endif /* _ASM_VIO_H */ |