| /* |
| * Copyright (c) 2014-2015 The Linux Foundation. All rights reserved. |
| * |
| * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| * |
| * |
| * Permission to use, copy, modify, and/or distribute this software for |
| * any purpose with or without fee is hereby granted, provided that the |
| * above copyright notice and this permission notice appear in all |
| * copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| * PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| /* |
| * This file was originally distributed by Qualcomm Atheros, Inc. |
| * under proprietary terms before Copyright ownership was assigned |
| * to the Linux Foundation. |
| */ |
| |
| /** |
| * DOC: i_cdf_time.h |
| * |
| * Linux specific CDF timing APIs implementation |
| */ |
| |
| #ifndef _I_CDF_TIME_H |
| #define _I_CDF_TIME_H |
| |
| #include <linux/jiffies.h> |
| #include <linux/delay.h> |
| #include <asm/arch_timer.h> |
| #ifdef CONFIG_CNSS |
| #include <net/cnss.h> |
| #endif |
| |
| typedef unsigned long __cdf_time_t; |
| |
| /** |
| * __cdf_system_ticks() - get system ticks |
| * |
| * Return: system tick in jiffies |
| */ |
| static inline __cdf_time_t __cdf_system_ticks(void) |
| { |
| return jiffies; |
| } |
| |
| /** |
| * __cdf_system_ticks_to_msecs() - convert system ticks into milli seconds |
| * @ticks: System ticks |
| * |
| * Return: system tick converted into milli seconds |
| */ |
| static inline uint32_t __cdf_system_ticks_to_msecs(unsigned long ticks) |
| { |
| return jiffies_to_msecs(ticks); |
| } |
| |
| /** |
| * __cdf_system_msecs_to_ticks() - convert milli seconds into system ticks |
| * @msecs: Milli seconds |
| * |
| * Return: milli seconds converted into system ticks |
| */ |
| static inline __cdf_time_t __cdf_system_msecs_to_ticks(uint32_t msecs) |
| { |
| return msecs_to_jiffies(msecs); |
| } |
| |
| /** |
| * __cdf_get_system_uptime() - get system uptime |
| * |
| * Return: system uptime in jiffies |
| */ |
| static inline __cdf_time_t __cdf_get_system_uptime(void) |
| { |
| return jiffies; |
| } |
| |
| static inline __cdf_time_t __cdf_get_system_timestamp(void) |
| { |
| return (jiffies / HZ) * 1000 + (jiffies % HZ) * (1000 / HZ); |
| } |
| |
| /** |
| * __cdf_udelay() - delay execution for given microseconds |
| * @usecs: Micro seconds to delay |
| * |
| * Return: none |
| */ |
| static inline void __cdf_udelay(uint32_t usecs) |
| { |
| #ifdef CONFIG_ARM |
| /* |
| * This is in support of XScale build. They have a limit on the udelay |
| * value, so we have to make sure we don't approach the limit |
| */ |
| |
| uint32_t mticks; |
| uint32_t leftover; |
| int i; |
| |
| /* slice into 1024 usec chunks (simplifies calculation) */ |
| |
| mticks = usecs >> 10; |
| leftover = usecs - (mticks << 10); |
| |
| for (i = 0; i < mticks; i++) |
| udelay(1024); |
| |
| udelay(leftover); |
| |
| #else |
| /* Normal Delay functions. Time specified in microseconds */ |
| udelay(usecs); |
| |
| #endif |
| } |
| |
| /** |
| * __cdf_mdelay() - delay execution for given milli seconds |
| * @usecs: Milli seconds to delay |
| * |
| * Return: none |
| */ |
| static inline void __cdf_mdelay(uint32_t msecs) |
| { |
| mdelay(msecs); |
| } |
| |
| /** |
| * __cdf_system_time_after() - Check if a is later than b |
| * @a: Time stamp value a |
| * @b: Time stamp value b |
| * |
| * Return: |
| * true if a < b else false |
| */ |
| static inline bool __cdf_system_time_after(__cdf_time_t a, __cdf_time_t b) |
| { |
| return (long)(b) - (long)(a) < 0; |
| } |
| |
| /** |
| * __cdf_system_time_before() - Check if a is before b |
| * @a: Time stamp value a |
| * @b: Time stamp value b |
| * |
| * Return: |
| * true if a is before b else false |
| */ |
| static inline bool __cdf_system_time_before(__cdf_time_t a, __cdf_time_t b) |
| { |
| return __cdf_system_time_after(b, a); |
| } |
| |
| /** |
| * __cdf_system_time_before() - Check if a atleast as recent as b, if not |
| * later |
| * @a: Time stamp value a |
| * @b: Time stamp value b |
| * |
| * Return: |
| * true if a >= b else false |
| */ |
| static inline bool __cdf_system_time_after_eq(__cdf_time_t a, __cdf_time_t b) |
| { |
| return (long)(a) - (long)(b) >= 0; |
| } |
| |
| /** |
| * __cdf_get_monotonic_boottime() - get monotonic kernel boot time |
| * This API is similar to cdf_get_system_boottime but it includes |
| * time spent in suspend. |
| * |
| * Return: Time in microseconds |
| */ |
| #ifdef CONFIG_CNSS |
| static inline uint64_t __cdf_get_monotonic_boottime(void) |
| { |
| struct timespec ts; |
| |
| cnss_get_monotonic_boottime(&ts); |
| |
| return ((uint64_t) ts.tv_sec * 1000000) + (ts.tv_nsec / 1000); |
| } |
| #else |
| static inline uint64_t __cdf_get_monotonic_boottime(void) |
| { |
| return __cdf_system_ticks_to_msecs(__cdf_system_ticks()) * 1000; |
| } |
| #endif /* CONFIG_CNSS */ |
| |
| #ifdef QCA_WIFI_3_0_ADRASTEA |
| /** |
| * __cdf_get_qtimer_ticks() - get QTIMER ticks |
| * |
| * Returns QTIMER(19.2 MHz) clock ticks. To convert it into seconds |
| * divide it by 19200. |
| * |
| * Return: QTIMER(19.2 MHz) clock ticks |
| */ |
| static inline uint64_t __cdf_get_qtimer_ticks(void) |
| { |
| return arch_counter_get_cntpct(); |
| } |
| #endif /* QCA_WIFI_3_0_ADRASTEA */ |
| |
| #endif |