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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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>
Stephen Rothwellfb120da2005-08-17 16:42:59 +100022#include <linux/mod_devicetable.h>
Stephen Rothwell71d276d2005-08-17 16:41:44 +100023
Linus Torvalds1da177e2005-04-16 15:20:36 -070024#include <asm/hvcall.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#include <asm/scatterlist.h>
Stephen Rothwell71d276d2005-08-17 16:41:44 +100026
27/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070028 * Architecture-specific constants for drivers to
29 * extract attributes of the device using vio_get_attribute()
Stephen Rothwell71d276d2005-08-17 16:41:44 +100030 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#define VETH_MAC_ADDR "local-mac-address"
32#define VETH_MCAST_FILTER_SIZE "ibm,mac-address-filters"
33
34/* End architecture-specific constants */
35
36#define h_vio_signal(ua, mode) \
37 plpar_hcall_norets(H_VIO_SIGNAL, ua, mode)
38
39#define VIO_IRQ_DISABLE 0UL
40#define VIO_IRQ_ENABLE 1UL
41
Linus Torvalds1da177e2005-04-16 15:20:36 -070042struct iommu_table;
43
Stephen Rothwell71d276d2005-08-17 16:41:44 +100044/*
45 * The vio_dev structure is used to describe virtual I/O devices.
46 */
47struct vio_dev {
48 struct iommu_table *iommu_table; /* vio_map_* uses this */
49 char *name;
50 char *type;
51 uint32_t unit_address;
52 unsigned int irq;
53 struct device dev;
54};
Linus Torvalds1da177e2005-04-16 15:20:36 -070055
Linus Torvalds1da177e2005-04-16 15:20:36 -070056struct vio_driver {
57 struct list_head node;
58 char *name;
Stephen Rothwell71d276d2005-08-17 16:41:44 +100059 const struct vio_device_id *id_table;
60 int (*probe)(struct vio_dev *dev, const struct vio_device_id *id);
61 int (*remove)(struct vio_dev *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070062 unsigned long driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -070063 struct device_driver driver;
64};
65
Stephen Rothwell71d276d2005-08-17 16:41:44 +100066struct vio_bus_ops {
67 int (*match)(const struct vio_device_id *id, const struct vio_dev *dev);
68 void (*unregister_device)(struct vio_dev *);
69 void (*release_device)(struct device *);
70};
71
72extern struct dma_mapping_ops vio_dma_ops;
73extern struct bus_type vio_bus_type;
74extern struct vio_dev vio_bus_device;
75
76extern int vio_register_driver(struct vio_driver *drv);
77extern void vio_unregister_driver(struct vio_driver *drv);
78
79extern struct vio_dev * __devinit vio_register_device(struct vio_dev *viodev);
80extern void __devinit vio_unregister_device(struct vio_dev *dev);
81
82extern int vio_bus_init(struct vio_bus_ops *);
83
84#ifdef CONFIG_PPC_PSERIES
85struct device_node;
86
87extern struct vio_dev * __devinit vio_register_device_node(
88 struct device_node *node_vdev);
89extern struct vio_dev *vio_find_node(struct device_node *vnode);
90extern const void *vio_get_attribute(struct vio_dev *vdev, void *which,
91 int *length);
92extern int vio_enable_interrupts(struct vio_dev *dev);
93extern int vio_disable_interrupts(struct vio_dev *dev);
94#endif
95
Linus Torvalds1da177e2005-04-16 15:20:36 -070096static inline struct vio_driver *to_vio_driver(struct device_driver *drv)
97{
98 return container_of(drv, struct vio_driver, driver);
99}
100
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101static inline struct vio_dev *to_vio_dev(struct device *dev)
102{
103 return container_of(dev, struct vio_dev, dev);
104}
105
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106#endif /* _ASM_VIO_H */