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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
2026-08-31 13:48:44 +08:00
parent 48ba121560
commit c96d9d0380
10 changed files with 20 additions and 10 deletions
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components/esp_driver_jpeg/jpeg_encode.c
+2 -1
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@@ -163,7 +163,8 @@ esp_err_t jpeg_new_encoder_engine(const jpeg_encode_engine_cfg_t *enc_eng_cfg, j
};
ESP_ERROR_CHECK(dma2d_acquire_pool(&dma2d_group_config, &encoder_engine->dma2d_group_handle));
encoder_engine->trans_desc = (dma2d_trans_t *)heap_caps_calloc(1, SIZEOF_DMA2D_TRANS_T, JPEG_MEM_ALLOC_CAPS);
// always allocate memory from internal memory because the dma2d transaction descriptor contains atomic variable
encoder_engine->trans_desc = (dma2d_trans_t *)heap_caps_calloc(1, SIZEOF_DMA2D_TRANS_T, MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT);
ESP_GOTO_ON_FALSE(encoder_engine->trans_desc, ESP_ERR_NO_MEM, err, TAG, "No memory for dma2d descriptor");
encoder_engine->header_info = (jpeg_enc_header_info_t*)heap_caps_calloc(1, sizeof(jpeg_enc_header_info_t), JPEG_MEM_ALLOC_CAPS);