/**
* i_idx番目のデスクリプタにバッファをセット
*/
static void setRxDesc(void* rx_buf, int idx)
{
enet_bd_struct_t *start = (enet_bd_struct_t *)_driver.rx_desc_start_addr;
/* Setup descriptor and clear statuses */
enet_hal_init_rxbds(start + idx, (uint8_t*)rx_buf,idx ==(NUM_OF_RX_RING - 1));
enet_hal_active_rxbd(BOARD_DEBUG_ENET_INSTANCE);
}
/** \brief Queues a pbuf into the RX descriptor list
*
* \param[in] k64f_enet Pointer to the drvier data structure
* \param[in] p Pointer to pbuf to queue
* \param[in] bidx Index to queue into
*/
static void k64f_rxqueue_pbuf(struct k64f_enetdata *k64f_enet, struct pbuf *p, int bidx)
{
enet_bd_struct_t *start = (enet_bd_struct_t *)k64f_enet->rx_desc_start_addr;
int idx;
/* Get next free descriptor index */
if (bidx == RX_PBUF_AUTO_INDEX)
idx = k64f_enet->rx_fill_index;
else
idx = bidx;
/* Setup descriptor and clear statuses */
enet_hal_init_rxbds(start + idx, (uint8_t*)p->payload, idx == ENET_RX_RING_LEN - 1);
/* Save pbuf pointer for push to network layer later */
k64f_enet->rxb[idx] = p;
/* Wrap at end of descriptor list */
idx = (idx + 1) % ENET_RX_RING_LEN;
/* Queue descriptor(s) */
k64f_enet->rx_free_descs -= 1;
if (bidx == RX_PBUF_AUTO_INDEX)
k64f_enet->rx_fill_index = idx;
enet_hal_active_rxbd(BOARD_DEBUG_ENET_INSTANCE_ADDR);
LWIP_DEBUGF(UDP_LPC_EMAC | LWIP_DBG_TRACE,
("k64f_rxqueue_pbuf: pbuf packet queued: %p (free desc=%d)\n", p,
k64f_enet->rx_free_descs));
}
