projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 */ |