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0508ad1f JK |
1 | /* FSI device & driver interfaces |
2 | * | |
3 | * Copyright (C) IBM Corporation 2016 | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | */ | |
14 | ||
15 | #ifndef LINUX_FSI_H | |
16 | #define LINUX_FSI_H | |
17 | ||
18 | #include <linux/device.h> | |
19 | ||
fda07a6c | 20 | struct fsi_device { |
dd37eed7 JK |
21 | struct device dev; |
22 | u8 engine_type; | |
23 | u8 version; | |
f7ade2a6 JK |
24 | u8 unit; |
25 | struct fsi_slave *slave; | |
26 | uint32_t addr; | |
27 | uint32_t size; | |
fda07a6c JK |
28 | }; |
29 | ||
4efe37f4 JK |
30 | extern int fsi_device_read(struct fsi_device *dev, uint32_t addr, |
31 | void *val, size_t size); | |
32 | extern int fsi_device_write(struct fsi_device *dev, uint32_t addr, | |
33 | const void *val, size_t size); | |
34 | extern int fsi_device_peek(struct fsi_device *dev, void *val); | |
35 | ||
dd37eed7 JK |
36 | struct fsi_device_id { |
37 | u8 engine_type; | |
38 | u8 version; | |
39 | }; | |
40 | ||
41 | #define FSI_VERSION_ANY 0 | |
42 | ||
43 | #define FSI_DEVICE(t) \ | |
44 | .engine_type = (t), .version = FSI_VERSION_ANY, | |
45 | ||
46 | #define FSI_DEVICE_VERSIONED(t, v) \ | |
47 | .engine_type = (t), .version = (v), | |
48 | ||
fda07a6c | 49 | struct fsi_driver { |
dd37eed7 JK |
50 | struct device_driver drv; |
51 | const struct fsi_device_id *id_table; | |
fda07a6c JK |
52 | }; |
53 | ||
54 | #define to_fsi_dev(devp) container_of(devp, struct fsi_device, dev) | |
55 | #define to_fsi_drv(drvp) container_of(drvp, struct fsi_driver, drv) | |
56 | ||
356d8009 CB |
57 | extern int fsi_driver_register(struct fsi_driver *fsi_drv); |
58 | extern void fsi_driver_unregister(struct fsi_driver *fsi_drv); | |
59 | ||
60 | /* module_fsi_driver() - Helper macro for drivers that don't do | |
61 | * anything special in module init/exit. This eliminates a lot of | |
62 | * boilerplate. Each module may only use this macro once, and | |
63 | * calling it replaces module_init() and module_exit() | |
64 | */ | |
65 | #define module_fsi_driver(__fsi_driver) \ | |
66 | module_driver(__fsi_driver, fsi_driver_register, \ | |
67 | fsi_driver_unregister) | |
68 | ||
da36cadf JK |
69 | /* direct slave API */ |
70 | extern int fsi_slave_claim_range(struct fsi_slave *slave, | |
71 | uint32_t addr, uint32_t size); | |
72 | extern void fsi_slave_release_range(struct fsi_slave *slave, | |
73 | uint32_t addr, uint32_t size); | |
74 | extern int fsi_slave_read(struct fsi_slave *slave, uint32_t addr, | |
75 | void *val, size_t size); | |
76 | extern int fsi_slave_write(struct fsi_slave *slave, uint32_t addr, | |
77 | const void *val, size_t size); | |
78 | ||
79 | ||
80 | ||
0508ad1f JK |
81 | extern struct bus_type fsi_bus_type; |
82 | ||
83 | #endif /* LINUX_FSI_H */ |