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fix(driver): allocate driver objects containing atomic variables from internal SRAM

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Objects with atomic members must not be allocated to PSRAM, otherwise
the ordering guarantee of atomic accesses is weakened due to a hardware
behavior on ESP32 chips. Explicitly request MALLOC_CAP_INTERNAL |
MALLOC_CAP_8BIT for:

- i2c master bus object (atomic status/trans_idx)
- i3c master bus object (atomic fsm)
- ISP processor and AE/AF/AWB/HIST controllers (atomic fsm)
- JPEG decoder/encoder dma2d transaction descriptors (atomic started)
- PPA transaction storage embedding dma2d_trans_t
- dma2d m2m test transaction embedding dma2d_trans_t
This commit is contained in:
morris
2026-09-03 09:46:22 +08:00
parent 5e6f53cdb3
commit 324e9885af
10 changed files with 20 additions and 10 deletions
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components/esp_driver_i3c/i3c_master.c
+2 -1
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@@ -541,7 +541,8 @@ esp_err_t i3c_new_master_bus(const i3c_master_bus_config_t *bus_config, i3c_mast
esp_err_t ret = ESP_OK;
i3c_master_bus_t *i3c_master_handle = NULL;
i3c_master_handle = (i3c_master_bus_t*) heap_caps_calloc(1, sizeof(i3c_master_bus_t), I3C_MASTER_MEM_ALLOC_CAPS);
// always allocate memory from internal memory because the driver object contains atomic variable
i3c_master_handle = (i3c_master_bus_t*) heap_caps_calloc(1, sizeof(i3c_master_bus_t), MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT);
ESP_RETURN_ON_FALSE(i3c_master_handle, ESP_ERR_NO_MEM, TAG, "no mem for i3c master bus handle");
s_i3c_master_platform.spinlock = (portMUX_TYPE)portMUX_INITIALIZER_UNLOCKED;