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14#ifndef _ASM_POWERPC_VIO_H
15#define _ASM_POWERPC_VIO_H
16#ifdef __KERNEL__
17
18#include <linux/errno.h>
19#include <linux/device.h>
20#include <linux/dma-mapping.h>
21#include <linux/mod_devicetable.h>
22#include <linux/scatterlist.h>
23
24#include <asm/hvcall.h>
25
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29
30#define VETH_MAC_ADDR "local-mac-address"
31#define VETH_MCAST_FILTER_SIZE "ibm,mac-address-filters"
32
33
34
35#define h_vio_signal(ua, mode) \
36 plpar_hcall_norets(H_VIO_SIGNAL, ua, mode)
37
38#define VIO_IRQ_DISABLE 0UL
39#define VIO_IRQ_ENABLE 1UL
40
41
42
43
44#define VIO_CMO_MIN_ENT 1562624
45
46extern struct bus_type vio_bus_type;
47
48struct iommu_table;
49
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54
55#define VIO_BASE_PFO_UA 0x50000000
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71
72struct vio_pfo_op {
73 u64 flags;
74 s64 in;
75 s64 inlen;
76 s64 out;
77 s64 outlen;
78 u64 csbcpb;
79 void *done;
80 unsigned long handle;
81 unsigned int timeout;
82 long hcall_err;
83};
84
85
86
87enum vio_dev_family {
88 VDEVICE,
89 PFO,
90};
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99
100struct vio_dev {
101 const char *name;
102 const char *type;
103 uint32_t unit_address;
104 uint32_t resource_id;
105 unsigned int irq;
106 struct {
107 size_t desired;
108 size_t entitled;
109 size_t allocated;
110 atomic_t allocs_failed;
111 } cmo;
112 enum vio_dev_family family;
113 struct device dev;
114};
115
116struct vio_driver {
117 const char *name;
118 const struct vio_device_id *id_table;
119 int (*probe)(struct vio_dev *dev, const struct vio_device_id *id);
120 int (*remove)(struct vio_dev *dev);
121
122
123
124 unsigned long (*get_desired_dma)(struct vio_dev *dev);
125 const struct dev_pm_ops *pm;
126 struct device_driver driver;
127};
128
129extern int __vio_register_driver(struct vio_driver *drv, struct module *owner,
130 const char *mod_name);
131
132
133
134#define vio_register_driver(driver) \
135 __vio_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
136extern void vio_unregister_driver(struct vio_driver *drv);
137
138extern int vio_cmo_entitlement_update(size_t);
139extern void vio_cmo_set_dev_desired(struct vio_dev *viodev, size_t desired);
140
141extern void vio_unregister_device(struct vio_dev *dev);
142
143extern int vio_h_cop_sync(struct vio_dev *vdev, struct vio_pfo_op *op);
144
145struct device_node;
146
147extern struct vio_dev *vio_register_device_node(
148 struct device_node *node_vdev);
149extern const void *vio_get_attribute(struct vio_dev *vdev, char *which,
150 int *length);
151#ifdef CONFIG_PPC_PSERIES
152extern struct vio_dev *vio_find_node(struct device_node *vnode);
153extern int vio_enable_interrupts(struct vio_dev *dev);
154extern int vio_disable_interrupts(struct vio_dev *dev);
155#else
156static inline int vio_enable_interrupts(struct vio_dev *dev)
157{
158 return 0;
159}
160#endif
161
162static inline struct vio_driver *to_vio_driver(struct device_driver *drv)
163{
164 return container_of(drv, struct vio_driver, driver);
165}
166
167static inline struct vio_dev *to_vio_dev(struct device *dev)
168{
169 return container_of(dev, struct vio_dev, dev);
170}
171
172#endif
173#endif
174