drivers: ethernet: stm32: Add receive callbacks
Callbacks which will be used by stm32cube driver
Signed-off-by: Bjarne von Horn <B.von_horn@wzl.rwth-aachen.de>
diff --git a/drivers/ethernet/eth_stm32_hal.c b/drivers/ethernet/eth_stm32_hal.c
index 1faab97..23214b0 100644
--- a/drivers/ethernet/eth_stm32_hal.c
+++ b/drivers/ethernet/eth_stm32_hal.c
@@ -114,6 +114,47 @@
static struct eth_stm32_rx_buffer_header dma_rx_buffer_header[ETH_RXBUFNB];
static struct eth_stm32_tx_buffer_header dma_tx_buffer_header[ETH_TXBUFNB];
+void HAL_ETH_RxAllocateCallback(uint8_t **buf)
+{
+ for (size_t i = 0; i < ETH_RXBUFNB; ++i) {
+ if (!dma_rx_buffer_header[i].used) {
+ dma_rx_buffer_header[i].next = NULL;
+ dma_rx_buffer_header[i].size = 0;
+ dma_rx_buffer_header[i].used = true;
+ *buf = dma_rx_buffer[i];
+ return;
+ }
+ }
+ *buf = NULL;
+}
+
+/* Pointer to an array of ETH_STM32_RX_BUF_SIZE uint8_t's */
+typedef uint8_t (*RxBufferPtr)[ETH_STM32_RX_BUF_SIZE];
+
+/* called by HAL_ETH_ReadData() */
+void HAL_ETH_RxLinkCallback(void **pStart, void **pEnd, uint8_t *buff, uint16_t Length)
+{
+ /* buff points to the begin on one of the rx buffers,
+ * so we can compute the index of the given buffer
+ */
+ size_t index = (RxBufferPtr)buff - &dma_rx_buffer[0];
+ struct eth_stm32_rx_buffer_header *header = &dma_rx_buffer_header[index];
+
+ __ASSERT_NO_MSG(index < ETH_RXBUFNB);
+
+ header->size = Length;
+
+ if (!*pStart) {
+ /* first packet, set head pointer of linked list */
+ *pStart = header;
+ *pEnd = header;
+ } else {
+ __ASSERT_NO_MSG(*pEnd != NULL);
+ /* not the first packet, add to list and adjust tail pointer */
+ ((struct eth_stm32_rx_buffer_header *)*pEnd)->next = header;
+ *pEnd = header;
+ }
+}
#endif /* CONFIG_ETH_STM32_HAL_API_V2 */
#if defined(CONFIG_SOC_SERIES_STM32H7X) || defined(CONFIG_ETH_STM32_HAL_API_V2)
