Commit | Line | Data |
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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/init.h> |
19 | #include <linux/errno.h> | |
20 | #include <linux/device.h> | |
21 | #include <linux/dma-mapping.h> | |
fb120da6 | 22 | #include <linux/mod_devicetable.h> |
71d276d7 | 23 | |
1da177e4 | 24 | #include <asm/hvcall.h> |
1da177e4 | 25 | #include <asm/scatterlist.h> |
71d276d7 SR |
26 | |
27 | /* | |
1da177e4 LT |
28 | * Architecture-specific constants for drivers to |
29 | * extract attributes of the device using vio_get_attribute() | |
71d276d7 | 30 | */ |
1da177e4 LT |
31 | #define VETH_MAC_ADDR "local-mac-address" |
32 | #define VETH_MCAST_FILTER_SIZE "ibm,mac-address-filters" | |
33 | ||
34 | /* End architecture-specific constants */ | |
35 | ||
36 | #define h_vio_signal(ua, mode) \ | |
37 | plpar_hcall_norets(H_VIO_SIGNAL, ua, mode) | |
38 | ||
39 | #define VIO_IRQ_DISABLE 0UL | |
40 | #define VIO_IRQ_ENABLE 1UL | |
41 | ||
a90ab95a RJ |
42 | /* |
43 | * VIO CMO minimum entitlement for all devices and spare entitlement | |
44 | */ | |
45 | #define VIO_CMO_MIN_ENT 1562624 | |
46 | ||
a9803497 AB |
47 | extern struct bus_type vio_bus_type; |
48 | ||
1da177e4 LT |
49 | struct iommu_table; |
50 | ||
f2ab6219 KY |
51 | /* |
52 | * Platform Facilities Option (PFO)-specific data | |
53 | */ | |
54 | ||
55 | /* Starting unit address for PFO devices on the VIO BUS */ | |
56 | #define VIO_BASE_PFO_UA 0x50000000 | |
57 | ||
58 | /** | |
59 | * vio_pfo_op - PFO operation parameters | |
60 | * | |
61 | * @flags: h_call subfunctions and modifiers | |
62 | * @in: Input data block logical real address | |
63 | * @inlen: If non-negative, the length of the input data block. If negative, | |
64 | * the length of the input data descriptor list in bytes. | |
65 | * @out: Output data block logical real address | |
66 | * @outlen: If non-negative, the length of the input data block. If negative, | |
67 | * the length of the input data descriptor list in bytes. | |
68 | * @csbcpb: Logical real address of the 4k naturally-aligned storage block | |
69 | * containing the CSB & optional FC field specific CPB | |
70 | * @timeout: # of milliseconds to retry h_call, 0 for no timeout. | |
71 | * @hcall_err: pointer to return the h_call return value, else NULL | |
72 | */ | |
73 | struct vio_pfo_op { | |
74 | u64 flags; | |
75 | s64 in; | |
76 | s64 inlen; | |
77 | s64 out; | |
78 | s64 outlen; | |
79 | u64 csbcpb; | |
80 | void *done; | |
81 | unsigned long handle; | |
82 | unsigned int timeout; | |
83 | long hcall_err; | |
84 | }; | |
85 | ||
86 | /* End PFO specific data */ | |
87 | ||
88 | enum vio_dev_family { | |
89 | VDEVICE, /* The OF node is a child of /vdevice */ | |
90 | PFO, /* The OF node is a child of /ibm,platform-facilities */ | |
91 | }; | |
92 | ||
a90ab95a RJ |
93 | /** |
94 | * vio_dev - This structure is used to describe virtual I/O devices. | |
95 | * | |
96 | * @desired: set from return of driver's get_desired_dma() function | |
97 | * @entitled: bytes of IO data that has been reserved for this device. | |
98 | * @allocated: bytes of IO data currently in use by the device. | |
99 | * @allocs_failed: number of DMA failures due to insufficient entitlement. | |
71d276d7 SR |
100 | */ |
101 | struct vio_dev { | |
a7f67bdf JK |
102 | const char *name; |
103 | const char *type; | |
71d276d7 | 104 | uint32_t unit_address; |
f2ab6219 | 105 | uint32_t resource_id; |
71d276d7 | 106 | unsigned int irq; |
a90ab95a RJ |
107 | struct { |
108 | size_t desired; | |
109 | size_t entitled; | |
110 | size_t allocated; | |
111 | atomic_t allocs_failed; | |
112 | } cmo; | |
f2ab6219 | 113 | enum vio_dev_family family; |
71d276d7 SR |
114 | struct device dev; |
115 | }; | |
1da177e4 | 116 | |
1da177e4 | 117 | struct vio_driver { |
cb52d897 | 118 | const char *name; |
71d276d7 SR |
119 | const struct vio_device_id *id_table; |
120 | int (*probe)(struct vio_dev *dev, const struct vio_device_id *id); | |
121 | int (*remove)(struct vio_dev *dev); | |
a90ab95a RJ |
122 | /* A driver must have a get_desired_dma() function to |
123 | * be loaded in a CMO environment if it uses DMA. | |
124 | */ | |
125 | unsigned long (*get_desired_dma)(struct vio_dev *dev); | |
cb52d897 | 126 | const struct dev_pm_ops *pm; |
1da177e4 LT |
127 | struct device_driver driver; |
128 | }; | |
129 | ||
cb52d897 BH |
130 | extern int __vio_register_driver(struct vio_driver *drv, struct module *owner, |
131 | const char *mod_name); | |
132 | /* | |
133 | * vio_register_driver must be a macro so that KBUILD_MODNAME can be expanded | |
134 | */ | |
135 | #define vio_register_driver(driver) \ | |
136 | __vio_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) | |
71d276d7 SR |
137 | extern void vio_unregister_driver(struct vio_driver *drv); |
138 | ||
a90ab95a RJ |
139 | extern int vio_cmo_entitlement_update(size_t); |
140 | extern void vio_cmo_set_dev_desired(struct vio_dev *viodev, size_t desired); | |
141 | ||
71d276d7 SR |
142 | extern void __devinit vio_unregister_device(struct vio_dev *dev); |
143 | ||
f2ab6219 KY |
144 | extern int vio_h_cop_sync(struct vio_dev *vdev, struct vio_pfo_op *op); |
145 | ||
71d276d7 SR |
146 | struct device_node; |
147 | ||
de7d812d | 148 | extern struct vio_dev *vio_register_device_node( |
71d276d7 | 149 | struct device_node *node_vdev); |
e10fa773 | 150 | extern const void *vio_get_attribute(struct vio_dev *vdev, char *which, |
71d276d7 | 151 | int *length); |
e10fa773 SR |
152 | #ifdef CONFIG_PPC_PSERIES |
153 | extern struct vio_dev *vio_find_node(struct device_node *vnode); | |
71d276d7 SR |
154 | extern int vio_enable_interrupts(struct vio_dev *dev); |
155 | extern int vio_disable_interrupts(struct vio_dev *dev); | |
56a4c6e3 SR |
156 | #else |
157 | static inline int vio_enable_interrupts(struct vio_dev *dev) | |
158 | { | |
159 | return 0; | |
160 | } | |
71d276d7 SR |
161 | #endif |
162 | ||
1da177e4 LT |
163 | static inline struct vio_driver *to_vio_driver(struct device_driver *drv) |
164 | { | |
165 | return container_of(drv, struct vio_driver, driver); | |
166 | } | |
167 | ||
1da177e4 LT |
168 | static inline struct vio_dev *to_vio_dev(struct device *dev) |
169 | { | |
170 | return container_of(dev, struct vio_dev, dev); | |
171 | } | |
172 | ||
88ced031 | 173 | #endif /* __KERNEL__ */ |
f38d87f5 | 174 | #endif /* _ASM_POWERPC_VIO_H */ |