2 * IBM PowerPC Virtual I/O Infrastructure Support.
4 * Copyright (c) 2003 IBM Corp.
5 * Dave Engebretsen engebret@us.ibm.com
6 * Santiago Leon santil@us.ibm.com
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.
14 #ifndef _ASM_POWERPC_VIO_H
15 #define _ASM_POWERPC_VIO_H
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>
24 #include <asm/hvcall.h>
25 #include <asm/scatterlist.h>
28 * Architecture-specific constants for drivers to
29 * extract attributes of the device using vio_get_attribute()
31 #define VETH_MAC_ADDR "local-mac-address"
32 #define VETH_MCAST_FILTER_SIZE "ibm,mac-address-filters"
34 /* End architecture-specific constants */
36 #define h_vio_signal(ua, mode) \
37 plpar_hcall_norets(H_VIO_SIGNAL, ua, mode)
39 #define VIO_IRQ_DISABLE 0UL
40 #define VIO_IRQ_ENABLE 1UL
43 * VIO CMO minimum entitlement for all devices and spare entitlement
45 #define VIO_CMO_MIN_ENT 1562624
50 * vio_dev - This structure is used to describe virtual I/O devices.
52 * @desired: set from return of driver's get_desired_dma() function
53 * @entitled: bytes of IO data that has been reserved for this device.
54 * @allocated: bytes of IO data currently in use by the device.
55 * @allocs_failed: number of DMA failures due to insufficient entitlement.
60 uint32_t unit_address;
66 atomic_t allocs_failed;
72 const struct vio_device_id *id_table;
73 int (*probe)(struct vio_dev *dev, const struct vio_device_id *id);
74 int (*remove)(struct vio_dev *dev);
75 /* A driver must have a get_desired_dma() function to
76 * be loaded in a CMO environment if it uses DMA.
78 unsigned long (*get_desired_dma)(struct vio_dev *dev);
79 struct device_driver driver;
82 extern int vio_register_driver(struct vio_driver *drv);
83 extern void vio_unregister_driver(struct vio_driver *drv);
85 extern int vio_cmo_entitlement_update(size_t);
86 extern void vio_cmo_set_dev_desired(struct vio_dev *viodev, size_t desired);
88 extern void __devinit vio_unregister_device(struct vio_dev *dev);
92 extern struct vio_dev *vio_register_device_node(
93 struct device_node *node_vdev);
94 extern const void *vio_get_attribute(struct vio_dev *vdev, char *which,
96 #ifdef CONFIG_PPC_PSERIES
97 extern struct vio_dev *vio_find_node(struct device_node *vnode);
98 extern int vio_enable_interrupts(struct vio_dev *dev);
99 extern int vio_disable_interrupts(struct vio_dev *dev);
101 static inline int vio_enable_interrupts(struct vio_dev *dev)
107 static inline struct vio_driver *to_vio_driver(struct device_driver *drv)
109 return container_of(drv, struct vio_driver, driver);
112 static inline struct vio_dev *to_vio_dev(struct device *dev)
114 return container_of(dev, struct vio_dev, dev);
117 #endif /* __KERNEL__ */
118 #endif /* _ASM_POWERPC_VIO_H */