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async_mcp: apply gdma driver

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This commit is contained in:
morris
2020-12-15 11:52:31 +08:00
parent e6d23a35ec
commit 40a6a0fac6
6 changed files with 97 additions and 117 deletions
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25
components/esp_system/esp_async_memcpy.c
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@@ -48,6 +48,7 @@ typedef struct {
*/
typedef struct async_memcpy_context_t {
async_memcpy_impl_t mcp_impl; // implementation layer
portMUX_TYPE spinlock; // spinlock, prevent operating descriptors concurrently
intr_handle_t intr_hdl; // interrupt handle
uint32_t flags; // extra driver flags
dma_descriptor_t *tx_desc; // pointer to the next free TX descriptor
@@ -73,11 +74,6 @@ esp_err_t esp_async_memcpy_install(const async_memcpy_config_t *config, async_me
mcp_hdl = heap_caps_calloc(1, total_malloc_size, MALLOC_CAP_8BIT | MALLOC_CAP_DMA | MALLOC_CAP_INTERNAL);
ASMCP_CHECK(mcp_hdl, "allocate context memory failed", err, ESP_ERR_NO_MEM);
int int_flags = ESP_INTR_FLAG_IRAM; // interrupt can still work when cache is disabled
// allocate interrupt handle, it's target dependent
ret_code = async_memcpy_impl_allocate_intr(&mcp_hdl->mcp_impl, int_flags, &mcp_hdl->intr_hdl);
ASMCP_CHECK(ret_code == ESP_OK, "allocate interrupt handle failed", err, ret_code);
mcp_hdl->flags = config->flags;
mcp_hdl->out_streams = mcp_hdl->streams_pool;
mcp_hdl->in_streams = mcp_hdl->streams_pool + config->backlog;
@@ -96,20 +92,18 @@ esp_err_t esp_async_memcpy_install(const async_memcpy_config_t *config, async_me
mcp_hdl->tx_desc = &mcp_hdl->out_streams[0].desc;
mcp_hdl->rx_desc = &mcp_hdl->in_streams[0].desc;
mcp_hdl->next_rx_desc_to_check = &mcp_hdl->in_streams[0].desc;
mcp_hdl->spinlock = (portMUX_TYPE)portMUX_INITIALIZER_UNLOCKED;
// initialize implementation layer
async_memcpy_impl_init(&mcp_hdl->mcp_impl, &mcp_hdl->out_streams[0].desc, &mcp_hdl->in_streams[0].desc);
async_memcpy_impl_init(&mcp_hdl->mcp_impl);
*asmcp = mcp_hdl;
async_memcpy_impl_start(&mcp_hdl->mcp_impl);
async_memcpy_impl_start(&mcp_hdl->mcp_impl, (intptr_t)&mcp_hdl->out_streams[0].desc, (intptr_t)&mcp_hdl->in_streams[0].desc);
return ESP_OK;
err:
if (mcp_hdl) {
if (mcp_hdl->intr_hdl) {
esp_intr_free(mcp_hdl->intr_hdl);
}
free(mcp_hdl);
}
if (asmcp) {
@@ -123,7 +117,6 @@ esp_err_t esp_async_memcpy_uninstall(async_memcpy_t asmcp)
esp_err_t ret_code = ESP_OK;
ASMCP_CHECK(asmcp, "mcp handle can't be null", err, ESP_ERR_INVALID_ARG);
esp_intr_free(asmcp->intr_hdl);
async_memcpy_impl_stop(&asmcp->mcp_impl);
async_memcpy_impl_deinit(&asmcp->mcp_impl);
free(asmcp);
@@ -243,7 +236,7 @@ esp_err_t esp_async_memcpy(async_memcpy_t asmcp, void *dst, void *src, size_t n,
ASMCP_CHECK(n <= DMA_DESCRIPTOR_BUFFER_MAX_SIZE * asmcp->max_stream_num, "buffer size too large", err, ESP_ERR_INVALID_ARG);
// Prepare TX and RX descriptor
portENTER_CRITICAL_SAFE(&asmcp->mcp_impl.hal_lock);
portENTER_CRITICAL_SAFE(&asmcp->spinlock);
rx_prepared_size = async_memcpy_prepare_receive(asmcp, dst, n, &rx_start_desc, &rx_end_desc);
tx_prepared_size = async_memcpy_prepare_transmit(asmcp, src, n, &tx_start_desc, &tx_end_desc);
if ((rx_prepared_size == n) && (tx_prepared_size == n)) {
@@ -269,7 +262,7 @@ esp_err_t esp_async_memcpy(async_memcpy_t asmcp, void *dst, void *src, size_t n,
asmcp->tx_desc = desc->next;
async_memcpy_impl_restart(&asmcp->mcp_impl);
}
portEXIT_CRITICAL_SAFE(&asmcp->mcp_impl.hal_lock);
portEXIT_CRITICAL_SAFE(&asmcp->spinlock);
// It's unlikely that we have space for rx descriptor but no space for tx descriptor
// Both tx and rx descriptor should move in the same pace
@@ -289,14 +282,14 @@ IRAM_ATTR void async_memcpy_isr_on_rx_done_event(async_memcpy_impl_t *impl)
async_memcpy_context_t *asmcp = __containerof(impl, async_memcpy_context_t, mcp_impl);
// get the RX eof descriptor address
dma_descriptor_t *eof = async_memcpy_impl_get_rx_suc_eof_descriptor(impl);
dma_descriptor_t *eof = (dma_descriptor_t *)impl->rx_eof_addr;
// traversal all unchecked descriptors
do {
portENTER_CRITICAL_ISR(&impl->hal_lock);
portENTER_CRITICAL_ISR(&asmcp->spinlock);
// There is an assumption that the usage of rx descriptors are in the same pace as tx descriptors (this is determined by M2M DMA working mechanism)
// And once the rx descriptor is recycled, the corresponding tx desc is guaranteed to be returned by DMA
to_continue = async_memcpy_get_next_rx_descriptor(asmcp, eof, &next_desc);
portEXIT_CRITICAL_ISR(&impl->hal_lock);
portEXIT_CRITICAL_ISR(&asmcp->spinlock);
if (next_desc) {
in_stream = __containerof(next_desc, async_memcpy_stream_t, desc);
// invoke user registered callback if available