tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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_POWERPC_VIO_H
15#define _ASM_POWERPC_VIO_H
16#ifdef __KERNEL__
17
18#include <linux/init.h>
19#include <linux/errno.h>
20#include <linux/device.h>
21#include <linux/dma-mapping.h>
22#include <linux/mod_devicetable.h>
23
24#include <asm/hvcall.h>
25#include <asm/scatterlist.h>
26
27/*
28 * Architecture-specific constants for drivers to
29 * extract attributes of the device using vio_get_attribute()
30 */
31#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
42struct iommu_table;
43
44/*
45 * The vio_dev structure is used to describe virtual I/O devices.
46 */
47struct vio_dev {
48 const char *name;
49 const char *type;
50 uint32_t unit_address;
51 unsigned int irq;
52 struct device dev;
53};
54
55struct vio_driver {
56 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);
59 struct device_driver driver;
60};
61
62extern int vio_register_driver(struct vio_driver *drv);
63extern void vio_unregister_driver(struct vio_driver *drv);
64
65extern void __devinit vio_unregister_device(struct vio_dev *dev);
66
67struct device_node;
68
69extern struct vio_dev *vio_register_device_node(
70 struct device_node *node_vdev);
71extern const void *vio_get_attribute(struct vio_dev *vdev, char *which,
72 int *length);
73#ifdef CONFIG_PPC_PSERIES
74extern struct vio_dev *vio_find_node(struct device_node *vnode);
75extern int vio_enable_interrupts(struct vio_dev *dev);
76extern int vio_disable_interrupts(struct vio_dev *dev);
77#else
78static inline int vio_enable_interrupts(struct vio_dev *dev)
79{
80 return 0;
81}
82#endif
83
84static inline struct vio_driver *to_vio_driver(struct device_driver *drv)
85{
86 return container_of(drv, struct vio_driver, driver);
87}
88
89static inline struct vio_dev *to_vio_dev(struct device *dev)
90{
91 return container_of(dev, struct vio_dev, dev);
92}
93
94#endif /* __KERNEL__ */
95#endif /* _ASM_POWERPC_VIO_H */