| /* |
| * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms and conditions of the GNU General Public License, |
| * version 2, as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #ifndef _NVSHM_STATS_H |
| #define _NVSHM_STATS_H |
| |
| #include <linux/notifier.h> |
| |
| enum nvshm_stats_type { |
| /** Start marker. */ |
| NVSHM_STATS_START, |
| /** End marker. */ |
| NVSHM_STATS_END, |
| /** Sub structure. */ |
| NVSHM_STATS_SUB, |
| /** Unsigned 32bit integer. */ |
| NVSHM_STATS_UINT32, |
| /** Signed 32bit integer. */ |
| NVSHM_STATS_SINT32, |
| /** Unsigned 64bit integer. */ |
| NVSHM_STATS_UINT64, |
| }; |
| |
| enum nvshm_stats_notification { |
| NVSHM_STATS_MODEM_UP, |
| NVSHM_STATS_MODEM_DOWN, |
| }; |
| |
| struct nvshm_stats_desc; |
| |
| struct nvshm_stats_iter { |
| const struct nvshm_stats_desc *desc; |
| char *data; |
| }; |
| |
| /** |
| * Find entry in statistics given a top-structure type name. |
| * @param top_name Name of top-structure to look for |
| * @param it Iterator returned |
| * @return Pointer to enabled field on success, error pointer on error |
| */ |
| const u32 *nvshm_stats_top( |
| const char *top_name, |
| struct nvshm_stats_iter *it); |
| |
| /** |
| * Enter sub-structure given a iterator on a NVSHM_STATS_SUB-type entry. |
| * @param it Iterator on entry |
| * @param index Array index to select if array of sub-structures |
| * @param sub_it Iterator on sub-structure |
| * @return 0 on success, negative error code on error |
| */ |
| int nvshm_stats_sub( |
| const struct nvshm_stats_iter *it, |
| int index, |
| struct nvshm_stats_iter *sub_it); |
| |
| /** |
| * Increment iterator to point to next entry. |
| * @param it Iterator to be incremented |
| * @return 0 on success, negative error code on error |
| */ |
| int nvshm_stats_next( |
| struct nvshm_stats_iter *it); |
| |
| /** |
| * Return name for entry pointed by iterator. |
| * @param it Iterator on entry |
| * @return Entry name |
| */ |
| const char *nvshm_stats_name( |
| const struct nvshm_stats_iter *it); |
| |
| /** |
| * Return type for entry pointed by iterator. |
| * @param it Iterator on entry |
| * @return Entry type |
| */ |
| enum nvshm_stats_type nvshm_stats_type( |
| const struct nvshm_stats_iter *it); |
| |
| /** |
| * Return number of elements in array. |
| * If pointed data is not an array, the returned value is 1. |
| * @param it Iterator on entry |
| * @return Number of elements |
| */ |
| int nvshm_stats_elems(const struct nvshm_stats_iter *it); |
| |
| /** |
| * Get pointer to value for entry pointed by iterator. |
| * @param it Iterator on entry |
| * @param index Array index if applicable |
| * @return Entry value pointer, or error pointer on failure |
| */ |
| u32 *nvshm_stats_valueptr_uint32( |
| const struct nvshm_stats_iter *it, |
| int index); |
| |
| /** |
| * Get pointer to value for entry pointed by iterator. |
| * @param it Iterator on entry |
| * @param index Array index if applicable |
| * @return Entry value pointer, or error pointer on failure |
| */ |
| s32 *nvshm_stats_valueptr_sint32( |
| const struct nvshm_stats_iter *it, |
| int index); |
| |
| /** |
| * Get pointer to value for entry pointed by iterator. |
| * @param it Iterator on entry |
| * @param index Array index if applicable |
| * @return Entry value pointer, or error pointer on failure |
| */ |
| u64 *nvshm_stats_valueptr_uint64( |
| const struct nvshm_stats_iter *it, |
| int index); |
| |
| /** |
| * Register for modem notifications. |
| * @param nb notifier block to register |
| */ |
| void nvshm_stats_register(struct notifier_block *nb); |
| |
| /** |
| * Unregister from modem notifications. |
| * @param nb notifier block to unregister |
| */ |
| void nvshm_stats_unregister(struct notifier_block *nb); |
| |
| #endif /* _NVSHM_STATS_H */ |