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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_isp/src/isp_af.c
+2 -1
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@@ -101,7 +101,8 @@ esp_err_t esp_isp_new_af_controller(isp_proc_handle_t isp_proc, const esp_isp_af
}
ESP_RETURN_ON_FALSE(af_config->edge_thresh > 0, ESP_ERR_INVALID_ARG, TAG, "edge threshold should be larger than 0");
isp_af_ctlr_t af_ctlr = heap_caps_calloc(1, sizeof(isp_af_controller_t), ISP_MEM_ALLOC_CAPS);
// always allocate memory from internal memory because the driver object contains atomic variable
isp_af_ctlr_t af_ctlr = heap_caps_calloc(1, sizeof(isp_af_controller_t), MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT);
ESP_RETURN_ON_FALSE(af_ctlr, ESP_ERR_NO_MEM, TAG, "no mem");
af_ctlr->evt_que = xQueueCreateWithCaps(1, sizeof(isp_af_result_t), ISP_MEM_ALLOC_CAPS);
ESP_GOTO_ON_FALSE(af_ctlr->evt_que, ESP_ERR_NO_MEM, err1, TAG, "no mem for af event queue");