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 | ||
1da177e4 LT |
47 | struct iommu_table; |
48 | ||
a90ab95a RJ |
49 | /** |
50 | * vio_dev - This structure is used to describe virtual I/O devices. | |
51 | * | |
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. | |
71d276d7 SR |
56 | */ |
57 | struct vio_dev { | |
a7f67bdf JK |
58 | const char *name; |
59 | const char *type; | |
71d276d7 SR |
60 | uint32_t unit_address; |
61 | unsigned int irq; | |
a90ab95a RJ |
62 | struct { |
63 | size_t desired; | |
64 | size_t entitled; | |
65 | size_t allocated; | |
66 | atomic_t allocs_failed; | |
67 | } cmo; | |
71d276d7 SR |
68 | struct device dev; |
69 | }; | |
1da177e4 | 70 | |
1da177e4 | 71 | struct vio_driver { |
cb52d897 | 72 | const char *name; |
71d276d7 SR |
73 | const struct vio_device_id *id_table; |
74 | int (*probe)(struct vio_dev *dev, const struct vio_device_id *id); | |
75 | int (*remove)(struct vio_dev *dev); | |
a90ab95a RJ |
76 | /* A driver must have a get_desired_dma() function to |
77 | * be loaded in a CMO environment if it uses DMA. | |
78 | */ | |
79 | unsigned long (*get_desired_dma)(struct vio_dev *dev); | |
cb52d897 | 80 | const struct dev_pm_ops *pm; |
1da177e4 LT |
81 | struct device_driver driver; |
82 | }; | |
83 | ||
cb52d897 BH |
84 | extern int __vio_register_driver(struct vio_driver *drv, struct module *owner, |
85 | const char *mod_name); | |
86 | /* | |
87 | * vio_register_driver must be a macro so that KBUILD_MODNAME can be expanded | |
88 | */ | |
89 | #define vio_register_driver(driver) \ | |
90 | __vio_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) | |
71d276d7 SR |
91 | extern void vio_unregister_driver(struct vio_driver *drv); |
92 | ||
a90ab95a RJ |
93 | extern int vio_cmo_entitlement_update(size_t); |
94 | extern void vio_cmo_set_dev_desired(struct vio_dev *viodev, size_t desired); | |
95 | ||
71d276d7 SR |
96 | extern void __devinit vio_unregister_device(struct vio_dev *dev); |
97 | ||
71d276d7 SR |
98 | struct device_node; |
99 | ||
de7d812d | 100 | extern struct vio_dev *vio_register_device_node( |
71d276d7 | 101 | struct device_node *node_vdev); |
e10fa773 | 102 | extern const void *vio_get_attribute(struct vio_dev *vdev, char *which, |
71d276d7 | 103 | int *length); |
e10fa773 SR |
104 | #ifdef CONFIG_PPC_PSERIES |
105 | extern struct vio_dev *vio_find_node(struct device_node *vnode); | |
71d276d7 SR |
106 | extern int vio_enable_interrupts(struct vio_dev *dev); |
107 | extern int vio_disable_interrupts(struct vio_dev *dev); | |
56a4c6e3 SR |
108 | #else |
109 | static inline int vio_enable_interrupts(struct vio_dev *dev) | |
110 | { | |
111 | return 0; | |
112 | } | |
71d276d7 SR |
113 | #endif |
114 | ||
1da177e4 LT |
115 | static inline struct vio_driver *to_vio_driver(struct device_driver *drv) |
116 | { | |
117 | return container_of(drv, struct vio_driver, driver); | |
118 | } | |
119 | ||
1da177e4 LT |
120 | static inline struct vio_dev *to_vio_dev(struct device *dev) |
121 | { | |
122 | return container_of(dev, struct vio_dev, dev); | |
123 | } | |
124 | ||
88ced031 | 125 | #endif /* __KERNEL__ */ |
f38d87f5 | 126 | #endif /* _ASM_POWERPC_VIO_H */ |