// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. #ifndef ESP_SPI_FLASH_CACHE_UTILS_H #define ESP_SPI_FLASH_CACHE_UTILS_H #include "sdkconfig.h" #include <stdbool.h> /** * This header file contains declarations of cache manipulation functions * used both in flash_ops.c and flash_mmap.c. * * These functions are considered internal and are not designed to be called from applications. */ // Init mutex protecting access to spi_flash_* APIs void spi_flash_init_lock(void); // Take mutex protecting access to spi_flash_* APIs void spi_flash_op_lock(void); // Release said mutex void spi_flash_op_unlock(void); // Suspend the scheduler on both CPUs, disable cache. // Contrary to its name this doesn't do anything with interrupts, yet. // Interrupt disabling capability will be added once we implement // interrupt allocation API. void spi_flash_disable_interrupts_caches_and_other_cpu(void); // Enable cache, enable interrupts (to be added in future), resume scheduler void spi_flash_enable_interrupts_caches_and_other_cpu(void); // Disables non-IRAM interrupt handlers on current CPU and caches on both CPUs. // This function is implied to be called when other CPU is not running or running code from IRAM. void spi_flash_disable_interrupts_caches_and_other_cpu_no_os(void); // Enable cache, enable interrupts on current CPU. // This function is implied to be called when other CPU is not running or running code from IRAM. void spi_flash_enable_interrupts_caches_no_os(void); // Mark the pages containing a flash region as having been // erased or written to. This means the flash cache needs // to be evicted before these pages can be flash_mmap()ed again, // as they may contain stale data // // Only call this while holding spi_flash_op_lock() // Returns true if cache was flushed, false otherwise bool spi_flash_check_and_flush_cache(size_t start_addr, size_t length); //config cache mode #if !CONFIG_IDF_TARGET_ESP32 //config instrcutin cache size and cache block size by menuconfig void esp_config_instruction_cache_mode(void); //config data cache size and cache block size by menuconfig void esp_config_data_cache_mode(void); //enable cache wrap mode for instruction cache and data cache esp_err_t esp_enable_cache_wrap(bool icache_wrap_enable, bool dcache_wrap_enable); #endif #endif //ESP_SPI_FLASH_CACHE_UTILS_H