Example #1
0
/**
 * \brief GMAC Interrupt handler.
 *
 * \param p_gmac_dev   Pointer to GMAC device instance.
 */
void gmac_handler(gmac_device_t* p_gmac_dev)
{
	Gmac *p_hw = p_gmac_dev->p_hw;

	gmac_tx_descriptor_t *p_tx_td;
	gmac_dev_tx_cb_t *p_tx_cb;
	volatile uint32_t ul_isr;
	volatile uint32_t ul_rsr;
	volatile uint32_t ul_tsr;
	uint32_t ul_rx_status_flag;
	uint32_t ul_tx_status_flag;

	ul_isr = gmac_get_interrupt_status(p_hw);
	ul_rsr = gmac_get_rx_status(p_hw);
	ul_tsr = gmac_get_tx_status(p_hw);

	ul_isr &= ~(gmac_get_interrupt_mask(p_hw) | 0xF8030300);

	/* RX packet */
	if ((ul_isr & GMAC_ISR_RCOMP) || (ul_rsr & GMAC_RSR_REC)) {
		ul_rx_status_flag = GMAC_RSR_REC;

		/* Check OVR */
		if (ul_rsr & GMAC_RSR_RXOVR) {
			ul_rx_status_flag |= GMAC_RSR_RXOVR;
		}
		/* Check BNA */
		if (ul_rsr & GMAC_RSR_BNA) {
			ul_rx_status_flag |= GMAC_RSR_BNA;
		}
		/* Clear status */
		gmac_clear_rx_status(p_hw, ul_rx_status_flag);

		/* Invoke callbacks */
		if (p_gmac_dev->func_rx_cb) {
			p_gmac_dev->func_rx_cb(ul_rx_status_flag);
		}
	}

	/* TX packet */
	if ((ul_isr & GMAC_ISR_TCOMP) || (ul_tsr & GMAC_TSR_TXCOMP)) {

		ul_tx_status_flag = GMAC_TSR_TXCOMP;

		/* A frame transmitted */

		/* Check RLE */
		if (ul_tsr & GMAC_TSR_RLE) {
			/* Status RLE & Number of discarded buffers */
			ul_tx_status_flag = GMAC_TSR_RLE | CIRC_CNT(p_gmac_dev->us_tx_head,
					p_gmac_dev->us_tx_tail, p_gmac_dev->us_tx_list_size);
			p_tx_cb = &p_gmac_dev->func_tx_cb_list[p_gmac_dev->us_tx_tail];
			gmac_reset_tx_mem(p_gmac_dev);
			gmac_enable_transmit(p_hw, 1);
		}
		/* Check COL */
		if (ul_tsr & GMAC_TSR_COL) {
			ul_tx_status_flag |= GMAC_TSR_COL;
		}
		/* Check UND */
		if (ul_tsr & GMAC_TSR_UND) {
			ul_tx_status_flag |= GMAC_TSR_UND;
		}
		/* Clear status */
		gmac_clear_tx_status(p_hw, ul_tx_status_flag);

		if (!CIRC_EMPTY(p_gmac_dev->us_tx_head, p_gmac_dev->us_tx_tail)) {
			/* Check the buffers */
			do {
				p_tx_td = &p_gmac_dev->p_tx_dscr[p_gmac_dev->us_tx_tail];
				p_tx_cb = &p_gmac_dev->func_tx_cb_list[p_gmac_dev->us_tx_tail];
				/* Any error? Exit if buffer has not been sent yet */
				if ((p_tx_td->status.val & GMAC_TXD_USED) == 0) {
					break;
				}

				/* Notify upper layer that a packet has been sent */
				if (*p_tx_cb) {
					(*p_tx_cb) (ul_tx_status_flag);
				}

				circ_inc(&p_gmac_dev->us_tx_tail, p_gmac_dev->us_tx_list_size);
			} while (CIRC_CNT(p_gmac_dev->us_tx_head, p_gmac_dev->us_tx_tail,
							p_gmac_dev->us_tx_list_size));
		}

		if (ul_tsr & GMAC_TSR_RLE) {
			/* Notify upper layer RLE */
			if (*p_tx_cb) {
				(*p_tx_cb) (ul_tx_status_flag);
			}
		}

		/* If a wakeup has been scheduled, notify upper layer that it can
		   send other packets, and the sending will be successful. */
		if ((CIRC_SPACE(p_gmac_dev->us_tx_head, p_gmac_dev->us_tx_tail,
				p_gmac_dev->us_tx_list_size) >= p_gmac_dev->uc_wakeup_threshold)
				&& p_gmac_dev->func_wakeup_cb) {
			p_gmac_dev->func_wakeup_cb();
		}
	}
}
Example #2
0
/**
 * \brief GMAC Interrupt handler.
 *
 * \param p_gmac_dev   Pointer to GMAC device instance.
 */
void gmac_handler(gmac_device_t* p_gmac_dev, gmac_quelist_t queue_idx)
{
	Gmac *p_hw = p_gmac_dev->p_hw;

	gmac_tx_descriptor_t *p_tx_td;
	gmac_dev_tx_cb_t *p_tx_cb;
	volatile uint32_t ul_isr;
	volatile uint32_t ul_rsr;
	volatile uint32_t ul_tsr;
	uint32_t ul_rx_status_flag;
	uint32_t ul_tx_status_flag;
#ifdef FREERTOS_USED
	portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
#endif

	gmac_queue_t* p_gmac_queue = &p_gmac_dev->gmac_queue_list[queue_idx];

	if(queue_idx == GMAC_QUE_0) {
		ul_isr = gmac_get_interrupt_status(p_hw);
	} else {
		ul_isr = gmac_get_priority_interrupt_status(p_hw, queue_idx);
	}
	ul_rsr = gmac_get_rx_status(p_hw);
	ul_tsr = gmac_get_tx_status(p_hw);

	ul_isr &= ~(gmac_get_interrupt_mask(p_hw) | 0xF8030300);

	/* RX packet */
	if ((ul_isr & GMAC_ISR_RCOMP) || (ul_rsr & GMAC_RSR_REC)) {
		ul_rx_status_flag = GMAC_RSR_REC;

		/* Check OVR */
		if (ul_rsr & GMAC_RSR_RXOVR) {
			ul_rx_status_flag |= GMAC_RSR_RXOVR;
		}
		/* Check BNA */
		if (ul_rsr & GMAC_RSR_BNA) {
			ul_rx_status_flag |= GMAC_RSR_BNA;
		}
		/* Clear status */
		gmac_clear_rx_status(p_hw, ul_rx_status_flag);

		/* Invoke callbacks */
		if (p_gmac_queue->func_rx_cb) {
			p_gmac_queue->func_rx_cb(ul_rx_status_flag);
		}
	}

	/* TX packet */
	if ((ul_isr & GMAC_ISR_TCOMP) || (ul_tsr & GMAC_TSR_TXCOMP)) {
		ul_tx_status_flag = GMAC_TSR_TXCOMP;

		/* Check RLE */
		if (ul_tsr & GMAC_TSR_RLE) {
			/* Status RLE */
			ul_tx_status_flag = GMAC_TSR_RLE;
			p_tx_cb = &p_gmac_queue->func_tx_cb_list[p_gmac_queue->us_tx_tail];
			gmac_reset_tx_mem(p_gmac_dev, queue_idx);
			gmac_enable_transmit(p_hw, 1);
		}
		/* Check COL */
		if (ul_tsr & GMAC_TSR_COL) {
			ul_tx_status_flag |= GMAC_TSR_COL;
		}

		/* Clear status */
		gmac_clear_tx_status(p_hw, ul_tx_status_flag);

		if (!CIRC_EMPTY(p_gmac_queue->us_tx_head, p_gmac_queue->us_tx_tail)) {
			/* Check the buffers */
			do {
				p_tx_td = &p_gmac_queue->p_tx_dscr[p_gmac_queue->us_tx_tail];
				p_tx_cb = &p_gmac_queue->func_tx_cb_list[p_gmac_queue->us_tx_tail];
				/* Any error? Exit if buffer has not been sent yet */
				if ((p_tx_td->status.val & GMAC_TXD_USED) == 0) {
					break;
				}

				/* Notify upper layer that a packet has been sent */
				if (*p_tx_cb) {
					(*p_tx_cb) (ul_tx_status_flag);
				}

				circ_inc(&p_gmac_queue->us_tx_tail, p_gmac_queue->us_tx_list_size);
			} while (CIRC_CNT(p_gmac_queue->us_tx_head, p_gmac_queue->us_tx_tail,
							p_gmac_queue->us_tx_list_size));
		}

		/* If a wakeup has been scheduled, notify upper layer that it can
		   send other packets, and the sending will be successful. */
		if ((CIRC_SPACE(p_gmac_queue->us_tx_head, p_gmac_queue->us_tx_tail,
				p_gmac_queue->us_tx_list_size) >= p_gmac_queue->uc_wakeup_threshold)
				&& p_gmac_queue->func_wakeup_cb) {
			p_gmac_queue->func_wakeup_cb();
		}
	}

#ifdef FREERTOS_USED
		/* Notify TCP/IP task to start data processing. */
		/* LwIP works on top of GMAC driver, hence this semaphore locks */
		/* the complete IP stack. */
		xSemaphoreGiveFromISR(netif_notification_semaphore,
				&xHigherPriorityTaskWoken);
		portEND_SWITCHING_ISR(xHigherPriorityTaskWoken);
#endif
}