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