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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * IBM PowerPC Virtual I/O Infrastructure Support.
3 *
Stephen Rothwellf38d87f2005-10-24 14:32:35 +10004 * Copyright (c) 2003 IBM Corp.
5 * Dave Engebretsen engebret@us.ibm.com
6 * Santiago Leon santil@us.ibm.com
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 *
Stephen Rothwellf38d87f2005-10-24 14:32:35 +10008 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070012 */
13
Stephen Rothwellf38d87f2005-10-24 14:32:35 +100014#ifndef _ASM_POWERPC_VIO_H
15#define _ASM_POWERPC_VIO_H
Arnd Bergmann88ced032005-12-16 22:43:46 +010016#ifdef __KERNEL__
Linus Torvalds1da177e2005-04-16 15:20:36 -070017
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#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 {
Jeremy Kerra7f67bd2006-07-12 15:35:54 +100048 const char *name;
49 const char *type;
Stephen Rothwell71d276d2005-08-17 16:41:44 +100050 uint32_t unit_address;
51 unsigned int irq;
52 struct device dev;
53};
Linus Torvalds1da177e2005-04-16 15:20:36 -070054
Linus Torvalds1da177e2005-04-16 15:20:36 -070055struct vio_driver {
Stephen Rothwell71d276d2005-08-17 16:41:44 +100056 const struct vio_device_id *id_table;
57 int (*probe)(struct vio_dev *dev, const struct vio_device_id *id);
58 int (*remove)(struct vio_dev *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070059 struct device_driver driver;
60};
61
Stephen Rothwell71d276d2005-08-17 16:41:44 +100062extern int vio_register_driver(struct vio_driver *drv);
63extern void vio_unregister_driver(struct vio_driver *drv);
64
Stephen Rothwell71d276d2005-08-17 16:41:44 +100065extern void __devinit vio_unregister_device(struct vio_dev *dev);
66
Stephen Rothwell71d276d2005-08-17 16:41:44 +100067struct device_node;
68
Stephen Rothwellde7d8122008-02-05 14:15:12 +110069extern struct vio_dev *vio_register_device_node(
Stephen Rothwell71d276d2005-08-17 16:41:44 +100070 struct device_node *node_vdev);
Stephen Rothwelle10fa772006-04-27 17:18:21 +100071extern const void *vio_get_attribute(struct vio_dev *vdev, char *which,
Stephen Rothwell71d276d2005-08-17 16:41:44 +100072 int *length);
Stephen Rothwelle10fa772006-04-27 17:18:21 +100073#ifdef CONFIG_PPC_PSERIES
74extern struct vio_dev *vio_find_node(struct device_node *vnode);
Stephen Rothwell71d276d2005-08-17 16:41:44 +100075extern int vio_enable_interrupts(struct vio_dev *dev);
76extern int vio_disable_interrupts(struct vio_dev *dev);
Stephen Rothwell56a4c6e2007-07-23 11:55:32 +100077#else
78static inline int vio_enable_interrupts(struct vio_dev *dev)
79{
80 return 0;
81}
Stephen Rothwell71d276d2005-08-17 16:41:44 +100082#endif
83
Linus Torvalds1da177e2005-04-16 15:20:36 -070084static inline struct vio_driver *to_vio_driver(struct device_driver *drv)
85{
86 return container_of(drv, struct vio_driver, driver);
87}
88
Linus Torvalds1da177e2005-04-16 15:20:36 -070089static inline struct vio_dev *to_vio_dev(struct device *dev)
90{
91 return container_of(dev, struct vio_dev, dev);
92}
93
Arnd Bergmann88ced032005-12-16 22:43:46 +010094#endif /* __KERNEL__ */
Stephen Rothwellf38d87f2005-10-24 14:32:35 +100095#endif /* _ASM_POWERPC_VIO_H */