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.
17 #include <linux/init.h>
18 #include <linux/errno.h>
19 #include <linux/device.h>
20 #include <linux/dma-mapping.h>
21 #include <asm/hvcall.h>
23 #include <asm/scatterlist.h>
25 * Architecture-specific constants for drivers to
26 * extract attributes of the device using vio_get_attribute()
28 #define VETH_MAC_ADDR "local-mac-address"
29 #define VETH_MCAST_FILTER_SIZE "ibm,mac-address-filters"
31 /* End architecture-specific constants */
33 #define h_vio_signal(ua, mode) \
34 plpar_hcall_norets(H_VIO_SIGNAL, ua, mode)
36 #define VIO_IRQ_DISABLE 0UL
37 #define VIO_IRQ_ENABLE 1UL
44 int vio_register_driver(struct vio_driver *drv);
45 void vio_unregister_driver(struct vio_driver *drv);
46 const struct vio_device_id * vio_match_device(const struct vio_device_id *ids,
47 const struct vio_dev *dev);
49 struct vio_dev * __devinit vio_register_device(struct device_node *node_vdev);
50 void __devinit vio_unregister_device(struct vio_dev *dev);
51 struct vio_dev *vio_find_node(struct device_node *vnode);
53 const void * vio_get_attribute(struct vio_dev *vdev, void* which, int* length);
54 int vio_get_irq(struct vio_dev *dev);
55 struct iommu_table * vio_build_iommu_table(struct vio_dev *dev);
56 int vio_enable_interrupts(struct vio_dev *dev);
57 int vio_disable_interrupts(struct vio_dev *dev);
59 dma_addr_t vio_map_single(struct vio_dev *dev, void *vaddr,
60 size_t size, enum dma_data_direction direction);
61 void vio_unmap_single(struct vio_dev *dev, dma_addr_t dma_handle,
62 size_t size, enum dma_data_direction direction);
63 int vio_map_sg(struct vio_dev *vdev, struct scatterlist *sglist,
64 int nelems, enum dma_data_direction direction);
65 void vio_unmap_sg(struct vio_dev *vdev, struct scatterlist *sglist,
66 int nelems, enum dma_data_direction direction);
67 void *vio_alloc_consistent(struct vio_dev *dev, size_t size,
68 dma_addr_t *dma_handle);
69 void vio_free_consistent(struct vio_dev *dev, size_t size, void *vaddr,
70 dma_addr_t dma_handle);
72 static inline int vio_dma_supported(struct vio_dev *hwdev, u64 mask)
77 #define vio_map_page(dev, page, off, size, dir) \
78 vio_map_single(dev, (page_address(page) + (off)), size, dir)
79 #define vio_unmap_page(dev,addr,sz,dir) vio_unmap_single(dev,addr,sz,dir)
81 static inline int vio_set_dma_mask(struct vio_dev *dev, u64 mask)
86 extern struct bus_type vio_bus_type;
88 struct vio_device_id {
94 struct list_head node;
96 const struct vio_device_id *id_table; /* NULL if wants all devices */
97 int (*probe) (struct vio_dev *dev, const struct vio_device_id *id); /* New device inserted */
98 int (*remove) (struct vio_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */
99 unsigned long driver_data;
101 struct device_driver driver;
104 static inline struct vio_driver *to_vio_driver(struct device_driver *drv)
106 return container_of(drv, struct vio_driver, driver);
110 * The vio_dev structure is used to describe virtual I/O devices.
113 struct device_node *archdata; /* Open Firmware node */
114 void *driver_data; /* data private to the driver */
115 struct iommu_table *iommu_table; /* vio_map_* uses this */
116 uint32_t unit_address;
122 static inline struct vio_dev *to_vio_dev(struct device *dev)
124 return container_of(dev, struct vio_dev, dev);
127 #endif /* _ASM_VIO_H */