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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> | |
71d276d7 | 22 | |
1da177e4 | 23 | #include <asm/hvcall.h> |
1da177e4 | 24 | #include <asm/scatterlist.h> |
71d276d7 SR |
25 | |
26 | /* | |
1da177e4 LT |
27 | * Architecture-specific constants for drivers to |
28 | * extract attributes of the device using vio_get_attribute() | |
71d276d7 | 29 | */ |
1da177e4 LT |
30 | #define VETH_MAC_ADDR "local-mac-address" |
31 | #define VETH_MCAST_FILTER_SIZE "ibm,mac-address-filters" | |
32 | ||
33 | /* End architecture-specific constants */ | |
34 | ||
35 | #define h_vio_signal(ua, mode) \ | |
36 | plpar_hcall_norets(H_VIO_SIGNAL, ua, mode) | |
37 | ||
38 | #define VIO_IRQ_DISABLE 0UL | |
39 | #define VIO_IRQ_ENABLE 1UL | |
40 | ||
1da177e4 LT |
41 | struct iommu_table; |
42 | ||
71d276d7 SR |
43 | /* |
44 | * The vio_dev structure is used to describe virtual I/O devices. | |
45 | */ | |
46 | struct vio_dev { | |
47 | struct iommu_table *iommu_table; /* vio_map_* uses this */ | |
48 | char *name; | |
49 | char *type; | |
50 | uint32_t unit_address; | |
51 | unsigned int irq; | |
52 | struct device dev; | |
53 | }; | |
1da177e4 LT |
54 | |
55 | struct vio_device_id { | |
56 | char *type; | |
57 | char *compat; | |
58 | }; | |
59 | ||
60 | struct vio_driver { | |
61 | struct list_head node; | |
62 | char *name; | |
71d276d7 SR |
63 | const struct vio_device_id *id_table; |
64 | int (*probe)(struct vio_dev *dev, const struct vio_device_id *id); | |
65 | int (*remove)(struct vio_dev *dev); | |
1da177e4 | 66 | unsigned long driver_data; |
1da177e4 LT |
67 | struct device_driver driver; |
68 | }; | |
69 | ||
71d276d7 SR |
70 | struct vio_bus_ops { |
71 | int (*match)(const struct vio_device_id *id, const struct vio_dev *dev); | |
72 | void (*unregister_device)(struct vio_dev *); | |
73 | void (*release_device)(struct device *); | |
74 | }; | |
75 | ||
76 | extern struct dma_mapping_ops vio_dma_ops; | |
77 | extern struct bus_type vio_bus_type; | |
78 | extern struct vio_dev vio_bus_device; | |
79 | ||
80 | extern int vio_register_driver(struct vio_driver *drv); | |
81 | extern void vio_unregister_driver(struct vio_driver *drv); | |
82 | ||
83 | extern struct vio_dev * __devinit vio_register_device(struct vio_dev *viodev); | |
84 | extern void __devinit vio_unregister_device(struct vio_dev *dev); | |
85 | ||
86 | extern int vio_bus_init(struct vio_bus_ops *); | |
87 | ||
88 | #ifdef CONFIG_PPC_PSERIES | |
89 | struct device_node; | |
90 | ||
91 | extern struct vio_dev * __devinit vio_register_device_node( | |
92 | struct device_node *node_vdev); | |
93 | extern struct vio_dev *vio_find_node(struct device_node *vnode); | |
94 | extern const void *vio_get_attribute(struct vio_dev *vdev, void *which, | |
95 | int *length); | |
96 | extern int vio_enable_interrupts(struct vio_dev *dev); | |
97 | extern int vio_disable_interrupts(struct vio_dev *dev); | |
98 | #endif | |
99 | ||
1da177e4 LT |
100 | static inline struct vio_driver *to_vio_driver(struct device_driver *drv) |
101 | { | |
102 | return container_of(drv, struct vio_driver, driver); | |
103 | } | |
104 | ||
1da177e4 LT |
105 | static inline struct vio_dev *to_vio_dev(struct device *dev) |
106 | { | |
107 | return container_of(dev, struct vio_dev, dev); | |
108 | } | |
109 | ||
110 | #endif /* _ASM_VIO_H */ |