| /* |
| * Copyright (c) 2016, Intel Corporation |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * 3. Neither the name of the Intel Corporation nor the names of its |
| * contributors may be used to endorse or promote products derived from this |
| * software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE INTEL CORPORATION OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef __QM_WDT_H__ |
| #define __QM_WDT_H__ |
| |
| #include "qm_common.h" |
| #include "qm_soc_regs.h" |
| |
| /** |
| * Watchdog timer. |
| * |
| * @defgroup groupWDT WDT |
| * @{ |
| */ |
| |
| /** |
| * WDT Mode type. |
| */ |
| typedef enum { |
| /** Watchdog Reset Response Mode. |
| * |
| * The watchdog will request a SoC Warm Reset on a timeout. |
| */ |
| QM_WDT_MODE_RESET = 0, |
| /** Watchdog Interrupt Reset Response Mode. |
| * |
| * The watchdog will generate an interrupt on first timeout. |
| * If interrupt has not been cleared by the second timeout |
| * the watchdog will then request a SoC Warm Reset. |
| */ |
| QM_WDT_MODE_INTERRUPT_RESET |
| } qm_wdt_mode_t; |
| |
| /** |
| * QM WDT configuration type. |
| */ |
| typedef struct { |
| /** |
| * Index for the WDT timeout table. |
| * For each instantiation of WDT there are multiple timeout |
| * values pre-programmed in hardware. |
| * Reference the SoC datasheet or register file for the table |
| * associated to the WDT being configured. |
| */ |
| uint32_t timeout; |
| qm_wdt_mode_t mode; /**< Watchdog response mode. */ |
| #if (HAS_WDT_PAUSE) |
| /** |
| * Pause enable in LMT power state C2 and C2 Plus. |
| * |
| * When equal to 1, the WDT is paused when LMT enters the C2 |
| * state. When equal to 0, the WDT is not paused when LMT |
| * enters the C2 state. |
| * |
| * This field applies only to Watchdogs on AON power island. |
| * |
| */ |
| bool pause_en; |
| #endif /* HAS_WDT_PAUSE */ |
| |
| /** |
| * User callback. |
| * |
| * param[in] data Callback user data. |
| */ |
| void (*callback)(void *data); |
| void *callback_data; /**< Callback user data. */ |
| } qm_wdt_config_t; |
| |
| /** |
| * Start WDT. |
| * |
| * Once started, WDT can only be stopped by a SoC reset. |
| * |
| * @param[in] wdt WDT index. |
| * |
| * @return Standard errno return type for QMSI. |
| * @retval 0 on success. |
| * @retval Negative @ref errno for possible error codes. |
| */ |
| int qm_wdt_start(const qm_wdt_t wdt); |
| |
| /** |
| * Set configuration of WDT module. |
| * |
| * This includes the timeout period in PCLK cycles, the WDT mode of operation. |
| * It also registers an ISR to the user defined callback. |
| * |
| * @param[in] wdt WDT index. |
| * @param[in] cfg New configuration for WDT. |
| * This must not be NULL. |
| * |
| * @return Standard errno return type for QMSI. |
| * @retval 0 on success. |
| * @retval Negative @ref errno for possible error codes. |
| */ |
| int qm_wdt_set_config(const qm_wdt_t wdt, const qm_wdt_config_t *const cfg); |
| |
| /** |
| * Reload the WDT counter. |
| * |
| * Reload the WDT counter with safety value, i.e. service the watchdog. |
| * |
| * @param[in] wdt WDT index. |
| * |
| * @return Standard errno return type for QMSI. |
| * @retval 0 on success. |
| * @retval Negative @ref errno for possible error codes. |
| */ |
| int qm_wdt_reload(const qm_wdt_t wdt); |
| |
| #if (ENABLE_RESTORE_CONTEXT) |
| /** |
| * Save watchdog context. |
| * |
| * Save the configuration of the watchdog before entering sleep. |
| * |
| * @param[in] wdt WDT index. |
| * @param[out] ctx WDT context structure. This must not be NULL. |
| * |
| * @return Standard errno return type for QMSI. |
| * @retval 0 on success. |
| * @retval Negative @ref errno for possible error codes. |
| */ |
| int qm_wdt_save_context(const qm_wdt_t wdt, qm_wdt_context_t *const ctx); |
| |
| /** |
| * Restore watchdog context. |
| * |
| * Restore the configuration of the watchdog after exiting sleep. |
| * |
| * @param[in] wdt WDT index. |
| * @param[in] ctx WDT context structure. This must not be NULL. |
| * |
| * @return Standard errno return type for QMSI. |
| * @retval 0 on success. |
| * @retval Negative @ref errno for possible error codes. |
| */ |
| int qm_wdt_restore_context(const qm_wdt_t wdt, |
| const qm_wdt_context_t *const ctx); |
| #endif /* ENABLE_RESTORE_CONTEXT */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* __QM_WDT_H__ */ |