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psram: reserve dma pool in the step of heap max block

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As heap block may be allocated into multiple non-contiguous chunks, to
reserve enough memory for dma/internal usage, we do the malloc in the
step of max available block.

On ESP32 we use this way, this commit follows this way, on ESP32S2 and
ESP32S3
This commit is contained in:
Armando 2022-06-29 16:29:12 +08:00 committed by Armando (Dou Yiwen)
parent be4d13d888
commit f0e93ed0f8
1 changed files with 11 additions and 22 deletions
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33
components/esp_psram/esp_psram.c
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@ -248,22 +248,26 @@ esp_err_t esp_psram_extram_get_alloced_range(intptr_t *out_vstart, intptr_t *out
return ESP_OK;
}
#if CONFIG_IDF_TARGET_ESP32
esp_err_t esp_psram_extram_reserve_dma_pool(size_t size) {
ESP_EARLY_LOGI(TAG, "Reserving pool of %dK of internal memory for DMA/internal allocations", size/1024);
esp_err_t esp_psram_extram_reserve_dma_pool(size_t size)
{
if (size == 0) {
return ESP_OK; //no-op
}
ESP_EARLY_LOGI(TAG, "Reserving pool of %dK of internal memory for DMA/internal allocations", size / 1024);
/* Pool may be allocated in multiple non-contiguous chunks, depending on available RAM */
while (size > 0) {
size_t next_size = heap_caps_get_largest_free_block(MALLOC_CAP_DMA|MALLOC_CAP_INTERNAL);
size_t next_size = heap_caps_get_largest_free_block(MALLOC_CAP_DMA | MALLOC_CAP_INTERNAL);
next_size = MIN(next_size, size);
ESP_EARLY_LOGD(TAG, "Allocating block of size %d bytes", next_size);
uint8_t *dma_heap = heap_caps_malloc(next_size, MALLOC_CAP_DMA|MALLOC_CAP_INTERNAL);
uint8_t *dma_heap = heap_caps_malloc(next_size, MALLOC_CAP_DMA | MALLOC_CAP_INTERNAL);
if (!dma_heap || next_size == 0) {
return ESP_ERR_NO_MEM;
}
uint32_t caps[] = { 0, MALLOC_CAP_DMA|MALLOC_CAP_INTERNAL, MALLOC_CAP_8BIT|MALLOC_CAP_32BIT };
esp_err_t e = heap_caps_add_region_with_caps(caps, (intptr_t) dma_heap, (intptr_t) dma_heap+next_size-1);
uint32_t caps[] = {0, MALLOC_CAP_DMA | MALLOC_CAP_INTERNAL, MALLOC_CAP_8BIT | MALLOC_CAP_32BIT};
esp_err_t e = heap_caps_add_region_with_caps(caps, (intptr_t)dma_heap, (intptr_t)dma_heap + next_size - 1);
if (e != ESP_OK) {
return e;
}
@ -271,21 +275,6 @@ esp_err_t esp_psram_extram_reserve_dma_pool(size_t size) {
}
return ESP_OK;
}
#else
esp_err_t esp_psram_extram_reserve_dma_pool(size_t size)
{
if (size == 0) {
return ESP_OK; //no-op
}
ESP_EARLY_LOGI(TAG, "Reserving pool of %dK of internal memory for DMA/internal allocations", size/1024);
uint8_t *dma_heap = heap_caps_malloc(size, MALLOC_CAP_DMA | MALLOC_CAP_INTERNAL);
if (!dma_heap) {
return ESP_ERR_NO_MEM;
}
uint32_t caps[] = {MALLOC_CAP_DMA | MALLOC_CAP_INTERNAL, 0, MALLOC_CAP_8BIT | MALLOC_CAP_32BIT};
return heap_caps_add_region_with_caps(caps, (intptr_t) dma_heap, (intptr_t) dma_heap + size);
}
#endif
bool IRAM_ATTR esp_psram_is_initialized(void)
{