espressif/esp-idf
1
0
Fork 1
mirror of https://github.com/espressif/esp-idf.git synced 2025-07-30 02:37:19 +02:00
Code Issues Packages Projects Releases Wiki Activity

spi_flash: fix concurrency issue when calling esp_flash apis under xip_psram or auto_suspen

Browse Source
This commit is contained in:
Armando
2023-06-25 15:22:42 +08:00
parent 63e24a9ff9
commit 0fe635f111
1 changed files with 21 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
components/spi_flash/spi_flash_os_func_app.c
View File

@ -21,8 +21,13 @@
#include "driver/spi_common_internal.h"
#define SPI_FLASH_CACHE_NO_DISABLE (CONFIG_SPI_FLASH_AUTO_SUSPEND || CONFIG_APP_BUILD_TYPE_ELF_RAM)
static const char TAG[] = "spi_flash";
#if SPI_FLASH_CACHE_NO_DISABLE
static _lock_t s_spi1_flash_mutex;
#endif // #if SPI_FLASH_CACHE_NO_DISABLE
/*
* OS functions providing delay service and arbitration among chips, and with the cache.
*
@ -59,16 +64,12 @@ static inline IRAM_ATTR bool on_spi1_check_yield(spi1_app_func_arg_t* ctx);
IRAM_ATTR static void cache_enable(void* arg)
{
#ifndef CONFIG_SPI_FLASH_AUTO_SUSPEND
g_flash_guard_default_ops.end();
#endif
}
IRAM_ATTR static void cache_disable(void* arg)
{
#ifndef CONFIG_SPI_FLASH_AUTO_SUSPEND
g_flash_guard_default_ops.start();
#endif
}
static IRAM_ATTR esp_err_t spi_start(void *arg)
@ -92,9 +93,19 @@ static IRAM_ATTR esp_err_t spi_end(void *arg)
static IRAM_ATTR esp_err_t spi1_start(void *arg)
{
esp_err_t ret = ESP_OK;
/**
* There are three ways for ESP Flash API lock:
* 1. spi bus lock, this is used when SPI1 is shared with GPSPI Master Driver
* 2. mutex, this is used when the Cache isn't need to be disabled.
* 3. cache lock (from cache_utils.h), this is used when we need to disable Cache to avoid access from SPI0
*
* From 1 to 3, the lock efficiency decreases.
*/
#if CONFIG_SPI_FLASH_SHARE_SPI1_BUS
//use the lock to disable the cache and interrupts before using the SPI bus
ret = spi_start(arg);
#elif SPI_FLASH_CACHE_NO_DISABLE
_lock_acquire(&s_spi1_flash_mutex);
#else
//directly disable the cache and interrupts when lock is not used
cache_disable(NULL);
@ -106,8 +117,14 @@ static IRAM_ATTR esp_err_t spi1_start(void *arg)
static IRAM_ATTR esp_err_t spi1_end(void *arg)
{
esp_err_t ret = ESP_OK;
/**
* There are three ways for ESP Flash API lock, see `spi1_start`
*/
#if CONFIG_SPI_FLASH_SHARE_SPI1_BUS
ret = spi_end(arg);
#elif SPI_FLASH_CACHE_NO_DISABLE
_lock_release(&s_spi1_flash_mutex);
#else
cache_enable(NULL);
#endif