Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * IBM PowerPC Virtual I/O Infrastructure Support. | |
3 | * | |
f38d87f5 SR |
4 | * Copyright (c) 2003 IBM Corp. |
5 | * Dave Engebretsen engebret@us.ibm.com | |
6 | * Santiago Leon santil@us.ibm.com | |
1da177e4 | 7 | * |
f38d87f5 SR |
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. | |
1da177e4 LT |
12 | */ |
13 | ||
f38d87f5 SR |
14 | #ifndef _ASM_POWERPC_VIO_H |
15 | #define _ASM_POWERPC_VIO_H | |
88ced031 | 16 | #ifdef __KERNEL__ |
1da177e4 | 17 | |
1da177e4 LT |
18 | #include <linux/errno.h> |
19 | #include <linux/device.h> | |
20 | #include <linux/dma-mapping.h> | |
fb120da6 | 21 | #include <linux/mod_devicetable.h> |
84be456f | 22 | #include <linux/scatterlist.h> |
71d276d7 | 23 | |
1da177e4 | 24 | #include <asm/hvcall.h> |
71d276d7 SR |
25 | |
26 | /* | |
1da177e4 LT |
27 | * Architecture-specific constants for drivers to |
28 | * extract attributes of the device using vio_get_attribute() | |
71d276d7 | 29 | */ |
1da177e4 LT |
30 | #define VETH_MAC_ADDR "local-mac-address" |
31 | #define VETH_MCAST_FILTER_SIZE "ibm,mac-address-filters" | |
32 | ||
33 | /* End architecture-specific constants */ | |
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 | ||
a90ab95a RJ |
41 | /* |
42 | * VIO CMO minimum entitlement for all devices and spare entitlement | |
43 | */ | |
44 | #define VIO_CMO_MIN_ENT 1562624 | |
45 | ||
a9803497 AB |
46 | extern struct bus_type vio_bus_type; |
47 | ||
1da177e4 LT |
48 | struct iommu_table; |
49 | ||
f2ab6219 KY |
50 | /* |
51 | * Platform Facilities Option (PFO)-specific data | |
52 | */ | |
53 | ||
54 | /* Starting unit address for PFO devices on the VIO BUS */ | |
55 | #define VIO_BASE_PFO_UA 0x50000000 | |
56 | ||
57 | /** | |
58 | * vio_pfo_op - PFO operation parameters | |
59 | * | |
60 | * @flags: h_call subfunctions and modifiers | |
61 | * @in: Input data block logical real address | |
62 | * @inlen: If non-negative, the length of the input data block. If negative, | |
63 | * the length of the input data descriptor list in bytes. | |
64 | * @out: Output data block logical real address | |
65 | * @outlen: If non-negative, the length of the input data block. If negative, | |
66 | * the length of the input data descriptor list in bytes. | |
67 | * @csbcpb: Logical real address of the 4k naturally-aligned storage block | |
68 | * containing the CSB & optional FC field specific CPB | |
69 | * @timeout: # of milliseconds to retry h_call, 0 for no timeout. | |
70 | * @hcall_err: pointer to return the h_call return value, else NULL | |
71 | */ | |
72 | struct 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 | /* End PFO specific data */ | |
86 | ||
87 | enum vio_dev_family { | |
88 | VDEVICE, /* The OF node is a child of /vdevice */ | |
89 | PFO, /* The OF node is a child of /ibm,platform-facilities */ | |
90 | }; | |
91 | ||
a90ab95a RJ |
92 | /** |
93 | * vio_dev - This structure is used to describe virtual I/O devices. | |
94 | * | |
95 | * @desired: set from return of driver's get_desired_dma() function | |
96 | * @entitled: bytes of IO data that has been reserved for this device. | |
97 | * @allocated: bytes of IO data currently in use by the device. | |
98 | * @allocs_failed: number of DMA failures due to insufficient entitlement. | |
71d276d7 SR |
99 | */ |
100 | struct vio_dev { | |
a7f67bdf JK |
101 | const char *name; |
102 | const char *type; | |
71d276d7 | 103 | uint32_t unit_address; |
f2ab6219 | 104 | uint32_t resource_id; |
71d276d7 | 105 | unsigned int irq; |
a90ab95a RJ |
106 | struct { |
107 | size_t desired; | |
108 | size_t entitled; | |
109 | size_t allocated; | |
110 | atomic_t allocs_failed; | |
111 | } cmo; | |
f2ab6219 | 112 | enum vio_dev_family family; |
71d276d7 SR |
113 | struct device dev; |
114 | }; | |
1da177e4 | 115 | |
1da177e4 | 116 | struct vio_driver { |
cb52d897 | 117 | const char *name; |
71d276d7 SR |
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); | |
a90ab95a RJ |
121 | /* A driver must have a get_desired_dma() function to |
122 | * be loaded in a CMO environment if it uses DMA. | |
123 | */ | |
124 | unsigned long (*get_desired_dma)(struct vio_dev *dev); | |
cb52d897 | 125 | const struct dev_pm_ops *pm; |
1da177e4 LT |
126 | struct device_driver driver; |
127 | }; | |
128 | ||
cb52d897 BH |
129 | extern int __vio_register_driver(struct vio_driver *drv, struct module *owner, |
130 | const char *mod_name); | |
131 | /* | |
132 | * vio_register_driver must be a macro so that KBUILD_MODNAME can be expanded | |
133 | */ | |
134 | #define vio_register_driver(driver) \ | |
135 | __vio_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) | |
71d276d7 SR |
136 | extern void vio_unregister_driver(struct vio_driver *drv); |
137 | ||
a90ab95a RJ |
138 | extern int vio_cmo_entitlement_update(size_t); |
139 | extern void vio_cmo_set_dev_desired(struct vio_dev *viodev, size_t desired); | |
140 | ||
cad5cef6 | 141 | extern void vio_unregister_device(struct vio_dev *dev); |
71d276d7 | 142 | |
f2ab6219 KY |
143 | extern int vio_h_cop_sync(struct vio_dev *vdev, struct vio_pfo_op *op); |
144 | ||
71d276d7 SR |
145 | struct device_node; |
146 | ||
de7d812d | 147 | extern struct vio_dev *vio_register_device_node( |
71d276d7 | 148 | struct device_node *node_vdev); |
e10fa773 | 149 | extern const void *vio_get_attribute(struct vio_dev *vdev, char *which, |
71d276d7 | 150 | int *length); |
e10fa773 SR |
151 | #ifdef CONFIG_PPC_PSERIES |
152 | extern struct vio_dev *vio_find_node(struct device_node *vnode); | |
71d276d7 SR |
153 | extern int vio_enable_interrupts(struct vio_dev *dev); |
154 | extern int vio_disable_interrupts(struct vio_dev *dev); | |
56a4c6e3 SR |
155 | #else |
156 | static inline int vio_enable_interrupts(struct vio_dev *dev) | |
157 | { | |
158 | return 0; | |
159 | } | |
71d276d7 SR |
160 | #endif |
161 | ||
1da177e4 LT |
162 | static inline struct vio_driver *to_vio_driver(struct device_driver *drv) |
163 | { | |
164 | return container_of(drv, struct vio_driver, driver); | |
165 | } | |
166 | ||
1da177e4 LT |
167 | static inline struct vio_dev *to_vio_dev(struct device *dev) |
168 | { | |
169 | return container_of(dev, struct vio_dev, dev); | |
170 | } | |
171 | ||
88ced031 | 172 | #endif /* __KERNEL__ */ |
f38d87f5 | 173 | #endif /* _ASM_POWERPC_VIO_H */ |