mSGDMA stride reads/writes

Hmmm.. yes you are right.. I use triple speed ethernet example and adds some module for my purpose.

And yes, I have debugged it.. I use mSGDMA MM-ST to check streaming data in Signal Tap, and works fine. But not in TCP IP

Yes, I have ISR Callback

/*
 * ISR Function when mSGDMA Interrupt happens
 */
static void msgdma_rx_complete_isr(void *context) {
//	IOWR_ALTERA_AVALON_PIO_DATA(PERIPHERAL_SUBSYSTEM_LED_PIO_BASE, 0xfd);
	stop_dispatcher(MSGDMA_RX_CSR_BASE);
	while(read_stopped(MSGDMA_RX_CSR_BASE) == 0);
	reset_dispatcher(MSGDMA_RX_CSR_BASE);
	enable_global_interrupt_mask(MSGDMA_RX_CSR_BASE);
	msgdma_int_rx = 2;
}

Thanks for your additional info..

In the latest, there are some things that I have changed. And it worked for me...

Before: Memory Altmemphy DDR

After: double Onchip Memory for successive Nios and mSGDMA

Before: In MM to TCP IP Task

			do {
				read_ptr = (read_ptr + 1) % 2;
				OSSemPend(Semaphore, 2, &err);
			} while(err == OS_ERR_TIMEOUT);
//			printf("------------------------------------------\n%d\n------------------------------------------\n", sizeof(iNetworkRadarData.data));
//			printf("Send package 1\n");
			length = sizeof(SGDMAMemory)/2;
			error_code = send(conns->fd, (char*) &length, sizeof(length), 0);
			error_code = send(conns->fd, (char*) &SGDMAMemory, length, 0);
//			printf("Send package 2\n");
			error_code = send(conns->fd, (char*) &length, sizeof(length), 0);
			error_code = send(conns->fd, (char*) &SGDMAMemory + length, length, 0);
			construct_standard_mm_to_st_descriptor(desc_tx_ptr, SGDMAMemory, 4*512,
					DESCRIPTOR_CONTROL_GENERATE_SOP_MASK | DESCRIPTOR_CONTROL_GENERATE_EOP_MASK);
			write_standard_descriptor(MSGDMA_TX_CSR_BASE,
					MSGDMA_TX_DESCRIPTOR_SLAVE_BASE,
					desc_tx_ptr);
//			memset(SGDMAMemory, 0, sizeof(SGDMAMemory));
			err = OSSemPost(Semaphore);
			OSTimeDlyHMSM(0,0,0,5);

After: In MM to TCP IP Task

			do {
				read_ptr = (read_ptr + 1) % 2;
				OSSemPend(Semaphore, 2, &err);
			} while(err == OS_ERR_TIMEOUT);
//			length = sizeof(SGDMAMemory)/2;
			alt_u32 memory;
			for(i = 0; i < 512; i++) {
				if(read_ptr == 0)
					memory = IORD_32DIRECT(SGDMA_MEM_0_BASE + i*sizeof(alt_u32), sizeof(alt_u32));
				else
					memory = IORD_32DIRECT(SGDMA_MEM_1_BASE + i*sizeof(alt_u32), sizeof(alt_u32));
			}
			length = 4*1024/8;
			for(i = 0; i <4; i++) {
				error_code = send(conns->fd, (char*) &length, sizeof(length), 0);
				error_code = send(conns->fd, (char*) memory + i*length, length, 0);
			}
			err = OSSemPost(Semaphore);
			OSTimeDlyHMSM(0,0,0,5);