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param: fixed heap pool reservation for DMA/internal usage fail issue

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As heap block may be allocated into multiple non-continuous chunks, to
reserve enough memory for dma/internal usage, we do the malloc in the
step of max available block.
This commit is contained in:
wanlei
2022-07-14 19:19:24 +08:00
parent b3f523b64b
commit 846b51fe15
3 changed files with 53 additions and 26 deletions
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11
components/esp32/spiram.c
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@@ -175,7 +175,6 @@ esp_err_t esp_spiram_init(void)
return ESP_OK;
}
esp_err_t esp_spiram_add_to_heapalloc(void)
{
//Add entire external RAM region to heap allocator. Heap allocator knows the capabilities of this type of memory, so there's
@@ -189,10 +188,11 @@ esp_err_t esp_spiram_add_to_heapalloc(void)
#endif
}
static uint8_t *dma_heap;
esp_err_t esp_spiram_reserve_dma_pool(size_t size) {
if (size == 0) {
return ESP_OK;
}
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) {
@@ -200,7 +200,8 @@ esp_err_t esp_spiram_reserve_dma_pool(size_t size) {
next_size = MIN(next_size, size);
ESP_EARLY_LOGD(TAG, "Allocating block of size %d bytes", next_size);
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;
}