projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 7bd1d409 AS |
1 | /* |
| 2 | * System Trace Module (STM) infrastructure | |
| 3 | * Copyright (c) 2014, Intel Corporation. | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify it | |
| 6 | * under the terms and conditions of the GNU General Public License, | |
| 7 | * version 2, as published by the Free Software Foundation. | |
| 8 | * | |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 12 | * more details. | |
| 13 | * | |
| 14 | * STM class implements generic infrastructure for System Trace Module devices | |
| 15 | * as defined in MIPI STPv2 specification. | |
| 16 | */ | |
| 17 | ||
| 18 | #ifndef _STM_STM_H_ | |
| 19 | #define _STM_STM_H_ | |
| 20 | ||
| 21 | struct stp_policy; | |
| 22 | struct stp_policy_node; | |
| 23 | ||
| 24 | struct stp_policy_node * | |
| 25 | stp_policy_node_lookup(struct stm_device *stm, char *s); | |
| 26 | void stp_policy_node_put(struct stp_policy_node *policy_node); | |
| 27 | void stp_policy_unbind(struct stp_policy *policy); | |
| 28 | ||
| 29 | void stp_policy_node_get_ranges(struct stp_policy_node *policy_node, | |
| 30 | unsigned int *mstart, unsigned int *mend, | |
| 31 | unsigned int *cstart, unsigned int *cend); | |
| 32 | int stp_configfs_init(void); | |
| 33 | void stp_configfs_exit(void); | |
| 34 | ||
| 35 | struct stp_master { | |
| 36 | unsigned int nr_free; | |
| 37 | unsigned long chan_map[0]; | |
| 38 | }; | |
| 39 | ||
| 40 | struct stm_device { | |
| 41 | struct device dev; | |
| 42 | struct module *owner; | |
| 43 | struct stp_policy *policy; | |
| 44 | struct mutex policy_mutex; | |
| 45 | int major; | |
| 46 | unsigned int sw_nmasters; | |
| 47 | struct stm_data *data; | |
| c74f7e82 | 48 | struct mutex link_mutex; |
| 7bd1d409 AS |
49 | spinlock_t link_lock; |
| 50 | struct list_head link_list; | |
| 51 | /* master allocation */ | |
| 52 | spinlock_t mc_lock; | |
| 53 | struct stp_master *masters[0]; | |
| 54 | }; | |
| 55 | ||
| 56 | #define to_stm_device(_d) \ | |
| 57 | container_of((_d), struct stm_device, dev) | |
| 58 | ||
| 59 | struct stm_output { | |
| cde4ad83 | 60 | spinlock_t lock; |
| 7bd1d409 AS |
61 | unsigned int master; |
| 62 | unsigned int channel; | |
| 63 | unsigned int nr_chans; | |
| 64 | }; | |
| 65 | ||
| 66 | struct stm_file { | |
| 67 | struct stm_device *stm; | |
| 68 | struct stp_policy_node *policy_node; | |
| 69 | struct stm_output output; | |
| 70 | }; | |
| 71 | ||
| 72 | struct stm_device *stm_find_device(const char *name); | |
| 73 | void stm_put_device(struct stm_device *stm); | |
| 74 | ||
| 75 | struct stm_source_device { | |
| 76 | struct device dev; | |
| 77 | struct stm_source_data *data; | |
| 78 | spinlock_t link_lock; | |
| 0df771de | 79 | struct stm_device __rcu *link; |
| 7bd1d409 AS |
80 | struct list_head link_entry; |
| 81 | /* one output per stm_source device */ | |
| 82 | struct stp_policy_node *policy_node; | |
| 83 | struct stm_output output; | |
| 84 | }; | |
| 85 | ||
| 86 | #define to_stm_source_device(_d) \ | |
| 87 | container_of((_d), struct stm_source_device, dev) | |
| 88 | ||
| 89 | #endif /* _STM_STM_H_ */ |