| Alexander Shishkin | 7bd1d40 | 2015-09-22 15:47:10 +0300 | [diff] [blame] | 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; |
| 48 | spinlock_t link_lock; |
| 49 | struct list_head link_list; |
| 50 | /* master allocation */ |
| 51 | spinlock_t mc_lock; |
| 52 | struct stp_master *masters[0]; |
| 53 | }; |
| 54 | |
| 55 | #define to_stm_device(_d) \ |
| 56 | container_of((_d), struct stm_device, dev) |
| 57 | |
| 58 | struct stm_output { |
| 59 | unsigned int master; |
| 60 | unsigned int channel; |
| 61 | unsigned int nr_chans; |
| 62 | }; |
| 63 | |
| 64 | struct stm_file { |
| 65 | struct stm_device *stm; |
| 66 | struct stp_policy_node *policy_node; |
| 67 | struct stm_output output; |
| 68 | }; |
| 69 | |
| 70 | struct stm_device *stm_find_device(const char *name); |
| 71 | void stm_put_device(struct stm_device *stm); |
| 72 | |
| 73 | struct stm_source_device { |
| 74 | struct device dev; |
| 75 | struct stm_source_data *data; |
| 76 | spinlock_t link_lock; |
| Alexander Shishkin | 0df771d | 2015-10-06 12:47:17 +0300 | [diff] [blame] | 77 | struct stm_device __rcu *link; |
| Alexander Shishkin | 7bd1d40 | 2015-09-22 15:47:10 +0300 | [diff] [blame] | 78 | struct list_head link_entry; |
| 79 | /* one output per stm_source device */ |
| 80 | struct stp_policy_node *policy_node; |
| 81 | struct stm_output output; |
| 82 | }; |
| 83 | |
| 84 | #define to_stm_source_device(_d) \ |
| 85 | container_of((_d), struct stm_source_device, dev) |
| 86 | |
| 87 | #endif /* _STM_STM_H_ */ |