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1802d0be | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
0508ad1f JK |
2 | /* FSI device & driver interfaces |
3 | * | |
4 | * Copyright (C) IBM Corporation 2016 | |
0508ad1f JK |
5 | */ |
6 | ||
7 | #ifndef LINUX_FSI_H | |
8 | #define LINUX_FSI_H | |
9 | ||
10 | #include <linux/device.h> | |
11 | ||
fda07a6c | 12 | struct fsi_device { |
dd37eed7 JK |
13 | struct device dev; |
14 | u8 engine_type; | |
15 | u8 version; | |
f7ade2a6 JK |
16 | u8 unit; |
17 | struct fsi_slave *slave; | |
18 | uint32_t addr; | |
19 | uint32_t size; | |
fda07a6c JK |
20 | }; |
21 | ||
4efe37f4 JK |
22 | extern int fsi_device_read(struct fsi_device *dev, uint32_t addr, |
23 | void *val, size_t size); | |
24 | extern int fsi_device_write(struct fsi_device *dev, uint32_t addr, | |
25 | const void *val, size_t size); | |
26 | extern int fsi_device_peek(struct fsi_device *dev, void *val); | |
27 | ||
dd37eed7 JK |
28 | struct fsi_device_id { |
29 | u8 engine_type; | |
30 | u8 version; | |
31 | }; | |
32 | ||
33 | #define FSI_VERSION_ANY 0 | |
34 | ||
35 | #define FSI_DEVICE(t) \ | |
36 | .engine_type = (t), .version = FSI_VERSION_ANY, | |
37 | ||
38 | #define FSI_DEVICE_VERSIONED(t, v) \ | |
39 | .engine_type = (t), .version = (v), | |
40 | ||
fda07a6c | 41 | struct fsi_driver { |
dd37eed7 JK |
42 | struct device_driver drv; |
43 | const struct fsi_device_id *id_table; | |
fda07a6c JK |
44 | }; |
45 | ||
46 | #define to_fsi_dev(devp) container_of(devp, struct fsi_device, dev) | |
47 | #define to_fsi_drv(drvp) container_of(drvp, struct fsi_driver, drv) | |
48 | ||
356d8009 CB |
49 | extern int fsi_driver_register(struct fsi_driver *fsi_drv); |
50 | extern void fsi_driver_unregister(struct fsi_driver *fsi_drv); | |
51 | ||
52 | /* module_fsi_driver() - Helper macro for drivers that don't do | |
53 | * anything special in module init/exit. This eliminates a lot of | |
54 | * boilerplate. Each module may only use this macro once, and | |
55 | * calling it replaces module_init() and module_exit() | |
56 | */ | |
57 | #define module_fsi_driver(__fsi_driver) \ | |
58 | module_driver(__fsi_driver, fsi_driver_register, \ | |
59 | fsi_driver_unregister) | |
60 | ||
da36cadf JK |
61 | /* direct slave API */ |
62 | extern int fsi_slave_claim_range(struct fsi_slave *slave, | |
63 | uint32_t addr, uint32_t size); | |
64 | extern void fsi_slave_release_range(struct fsi_slave *slave, | |
65 | uint32_t addr, uint32_t size); | |
66 | extern int fsi_slave_read(struct fsi_slave *slave, uint32_t addr, | |
67 | void *val, size_t size); | |
68 | extern int fsi_slave_write(struct fsi_slave *slave, uint32_t addr, | |
69 | const void *val, size_t size); | |
70 | ||
0ab5fe53 BH |
71 | extern struct bus_type fsi_bus_type; |
72 | extern const struct device_type fsi_cdev_type; | |
da36cadf | 73 | |
0ab5fe53 BH |
74 | enum fsi_dev_type { |
75 | fsi_dev_cfam, | |
76 | fsi_dev_sbefifo, | |
77 | fsi_dev_scom, | |
78 | fsi_dev_occ | |
79 | }; | |
da36cadf | 80 | |
0ab5fe53 BH |
81 | extern int fsi_get_new_minor(struct fsi_device *fdev, enum fsi_dev_type type, |
82 | dev_t *out_dev, int *out_index); | |
83 | extern void fsi_free_minor(dev_t dev); | |
0508ad1f JK |
84 | |
85 | #endif /* LINUX_FSI_H */ |