+++ /dev/null
-/*
- * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
- * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
- * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
- * OF SUCH DAMAGE.
- *
- * This file is part of the lwIP TCP/IP stack.
- *
- * Author: Adam Dunkels <adam@sics.se>
- *
- */
-
-/*
- * Copyright (c) 2010-2013 Xilinx, Inc. All rights reserved.
- *
- * Xilinx, Inc.
- * XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
- * COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
- * ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR
- * STANDARD, XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION
- * IS FREE FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE
- * FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
- * XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
- * THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO
- * ANY WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE
- * FROM CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE.
- *
- */
-
-#include <stdio.h>
-#include <string.h>
-
-#include <xparameters.h>
-#include "lwipopts.h"
-#include "xlwipconfig.h"
-#include "lwip/opt.h"
-#include "lwip/def.h"
-#include "lwip/mem.h"
-#include "lwip/pbuf.h"
-#include "lwip/sys.h"
-#include "lwip/stats.h"
-#include "lwip/igmp.h"
-
-#include "netif/etharp.h"
-#include "netif/xemacpsif.h"
-#include "netif/xadapter.h"
-#include "netif/xpqueue.h"
-#include "xparameters.h"
-#include "xuartps.h"
-#include "xscugic.h"
-#include "xemacps.h"
-
-
-/* Define those to better describe your network interface. */
-#define IFNAME0 't'
-#define IFNAME1 'e'
-
-#if LWIP_IGMP
-static err_t xemacpsif_mac_filter_update (struct netif *netif,
- struct ip_addr *group, u8_t action);
-
-static u8_t xemacps_mcast_entry_mask = 0;
-#endif
-
-XEmacPs_Config *mac_config;
-struct netif *NetIf;
-void FreeTxPBufs(void);
-/*
- * this function is always called with interrupts off
- * this function also assumes that there are available BD's
- */
-static err_t _unbuffered_low_level_output(xemacpsif_s *xemacpsif,
- struct pbuf *p)
-{
- XStatus status = 0;
-
-#if ETH_PAD_SIZE
- pbuf_header(p, -ETH_PAD_SIZE); /* drop the padding word */
-#endif
- status = emacps_sgsend(xemacpsif, p);
- if (status != XST_SUCCESS) {
-#if LINK_STATS
- lwip_stats.link.drop++;
-#endif
- }
-
-#if ETH_PAD_SIZE
- pbuf_header(p, ETH_PAD_SIZE); /* reclaim the padding word */
-#endif
-
-#if LINK_STATS
- lwip_stats.link.xmit++;
-#endif /* LINK_STATS */
-
- return ERR_OK;
-
-}
-
-/*
- * low_level_output():
- *
- * Should do the actual transmission of the packet. The packet is
- * contained in the pbuf that is passed to the function. This pbuf
- * might be chained.
- *
- */
-
-static err_t low_level_output(struct netif *netif, struct pbuf *p)
-{
- SYS_ARCH_DECL_PROTECT(lev);
- err_t err;
-
- struct xemac_s *xemac = (struct xemac_s *)(netif->state);
- xemacpsif_s *xemacpsif = (xemacpsif_s *)(xemac->state);
-
- SYS_ARCH_PROTECT(lev);
-
-
- /* check if space is available to send */
- if (is_tx_space_available(xemacpsif)) {
- _unbuffered_low_level_output(xemacpsif, p);
- err = ERR_OK;
- } else {
-#if LINK_STATS
- lwip_stats.link.drop++;
-#endif
- print("pack dropped, no space\r\n");
- err = ERR_MEM;
- }
-
-
- SYS_ARCH_UNPROTECT(lev);
- return err;
-}
-
-/*
- * low_level_input():
- *
- * Should allocate a pbuf and transfer the bytes of the incoming
- * packet from the interface into the pbuf.
- *
- */
-static struct pbuf * low_level_input(struct netif *netif)
-{
- struct xemac_s *xemac = (struct xemac_s *)(netif->state);
- xemacpsif_s *xemacpsif = (xemacpsif_s *)(xemac->state);
- struct pbuf *p;
-
- /* see if there is data to process */
- if (pq_qlength(xemacpsif->recv_q) == 0)
- return NULL;
-
- /* return one packet from receive q */
- p = (struct pbuf *)pq_dequeue(xemacpsif->recv_q);
- return p;
-}
-
-/*
- * xemacpsif_output():
- *
- * This function is called by the TCP/IP stack when an IP packet
- * should be sent. It calls the function called low_level_output() to
- * do the actual transmission of the packet.
- *
- */
-
-static err_t xemacpsif_output(struct netif *netif, struct pbuf *p,
- struct ip_addr *ipaddr)
-{
- /* resolve hardware address, then send (or queue) packet */
- return etharp_output(netif, p, ipaddr);
-}
-
-/*
- * xemacpsif_input():
- *
- * This function should be called when a packet is ready to be read
- * from the interface. It uses the function low_level_input() that
- * should handle the actual reception of bytes from the network
- * interface.
- *
- * Returns the number of packets read (max 1 packet on success,
- * 0 if there are no packets)
- *
- */
-
-int xemacpsif_input(struct netif *netif)
-{
- struct eth_hdr *ethhdr;
- struct pbuf *p;
- SYS_ARCH_DECL_PROTECT(lev);
-
-#ifdef OS_IS_FREERTOS
- while (1)
-#endif
- {
- /* move received packet into a new pbuf */
- SYS_ARCH_PROTECT(lev);
- p = low_level_input(netif);
- SYS_ARCH_UNPROTECT(lev);
-
- /* no packet could be read, silently ignore this */
- if (p == NULL) {
- return 0;
- }
-
- /* points to packet payload, which starts with an Ethernet header */
- ethhdr = p->payload;
-
-#if LINK_STATS
- lwip_stats.link.recv++;
-#endif /* LINK_STATS */
-
- switch (htons(ethhdr->type)) {
- /* IP or ARP packet? */
- case ETHTYPE_IP:
- case ETHTYPE_ARP:
-#if PPPOE_SUPPORT
- /* PPPoE packet? */
- case ETHTYPE_PPPOEDISC:
- case ETHTYPE_PPPOE:
-#endif /* PPPOE_SUPPORT */
- /* full packet send to tcpip_thread to process */
- if (netif->input(p, netif) != ERR_OK) {
- LWIP_DEBUGF(NETIF_DEBUG, ("xemacpsif_input: IP input error\r\n"));
- pbuf_free(p);
- p = NULL;
- }
- break;
-
- default:
- pbuf_free(p);
- p = NULL;
- break;
- }
- }
-
- return 1;
-}
-
-
-static err_t low_level_init(struct netif *netif)
-{
- unsigned mac_address = (unsigned)(netif->state);
- struct xemac_s *xemac;
- xemacpsif_s *xemacpsif;
- u32 dmacrreg;
-
- int Status = XST_SUCCESS;
-
- NetIf = netif;
-
- xemacpsif = mem_malloc(sizeof *xemacpsif);
- if (xemacpsif == NULL) {
- LWIP_DEBUGF(NETIF_DEBUG, ("xemacpsif_init: out of memory\r\n"));
- return ERR_MEM;
- }
-
- xemac = mem_malloc(sizeof *xemac);
- if (xemac == NULL) {
- LWIP_DEBUGF(NETIF_DEBUG, ("xemacpsif_init: out of memory\r\n"));
- return ERR_MEM;
- }
-
- xemac->state = (void *)xemacpsif;
- xemac->topology_index = xtopology_find_index(mac_address);
- xemac->type = xemac_type_emacps;
-
- xemacpsif->send_q = NULL;
- xemacpsif->recv_q = pq_create_queue();
- if (!xemacpsif->recv_q)
- return ERR_MEM;
-
- /* maximum transfer unit */
- netif->mtu = XEMACPS_MTU - XEMACPS_HDR_SIZE;
-
-#if LWIP_IGMP
- netif->igmp_mac_filter = xemacpsif_mac_filter_update;
-#endif
-
- netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP |
- NETIF_FLAG_LINK_UP;
-
-#if LWIP_IGMP
- netif->flags |= NETIF_FLAG_IGMP;
-#endif
-
-#if !NO_SYS
- sys_sem_new(&xemac->sem_rx_data_available, 0);
-#endif
- /* obtain config of this emac */
- mac_config = (XEmacPs_Config *)xemacps_lookup_config((unsigned)netif->state);
-
- Status = XEmacPs_CfgInitialize(&xemacpsif->emacps, mac_config,
- mac_config->BaseAddress);
- if (Status != XST_SUCCESS) {
- xil_printf("In %s:EmacPs Configuration Failed....\r\n", __func__);
- }
-
- /* initialize the mac */
- init_emacps(xemacpsif, netif);
-
- dmacrreg = XEmacPs_ReadReg(xemacpsif->emacps.Config.BaseAddress,
- XEMACPS_DMACR_OFFSET);
- dmacrreg = dmacrreg | (0x00000010);
- XEmacPs_WriteReg(xemacpsif->emacps.Config.BaseAddress,
- XEMACPS_DMACR_OFFSET, dmacrreg);
-
- setup_isr(xemac);
- init_dma(xemac);
- start_emacps(xemacpsif);
-
- /* replace the state in netif (currently the emac baseaddress)
- * with the mac instance pointer.
- */
- netif->state = (void *)xemac;
-
- return ERR_OK;
-}
-
-void HandleEmacPsError(struct xemac_s *xemac)
-{
- xemacpsif_s *xemacpsif;
- int Status = XST_SUCCESS;
- u32 dmacrreg;
-
- SYS_ARCH_DECL_PROTECT(lev);
- SYS_ARCH_PROTECT(lev);
-
- FreeTxRxPBufs();
- xemacpsif = (xemacpsif_s *)(xemac->state);
- Status = XEmacPs_CfgInitialize(&xemacpsif->emacps, mac_config,
- mac_config->BaseAddress);
- if (Status != XST_SUCCESS) {
- xil_printf("In %s:EmacPs Configuration Failed....\r\n", __func__);
- }
- /* initialize the mac */
- init_emacps_on_error(xemacpsif, NetIf);
- dmacrreg = XEmacPs_ReadReg(xemacpsif->emacps.Config.BaseAddress,
- XEMACPS_DMACR_OFFSET);
- dmacrreg = dmacrreg | (0x01000000);
- XEmacPs_WriteReg(xemacpsif->emacps.Config.BaseAddress,
- XEMACPS_DMACR_OFFSET, dmacrreg);
- setup_isr(xemac);
- init_dma(xemac);
- start_emacps(xemacpsif);
-
- SYS_ARCH_UNPROTECT(lev);
-}
-
-void HandleTxErrors(struct xemac_s *xemac)
-{
- xemacpsif_s *xemacpsif;
- u32 netctrlreg;
-
- SYS_ARCH_DECL_PROTECT(lev);
- SYS_ARCH_PROTECT(lev);
- xemacpsif = (xemacpsif_s *)(xemac->state);
- netctrlreg = XEmacPs_ReadReg(xemacpsif->emacps.Config.BaseAddress,
- XEMACPS_NWCTRL_OFFSET);
- netctrlreg = netctrlreg & (~XEMACPS_NWCTRL_TXEN_MASK);
- XEmacPs_WriteReg(xemacpsif->emacps.Config.BaseAddress,
- XEMACPS_NWCTRL_OFFSET, netctrlreg);
- FreeOnlyTxPBufs();
-
- clean_dma_txdescs(xemac);
- netctrlreg = XEmacPs_ReadReg(xemacpsif->emacps.Config.BaseAddress,
- XEMACPS_NWCTRL_OFFSET);
- netctrlreg = netctrlreg | (XEMACPS_NWCTRL_TXEN_MASK);
- XEmacPs_WriteReg(xemacpsif->emacps.Config.BaseAddress,
- XEMACPS_NWCTRL_OFFSET, netctrlreg);
- SYS_ARCH_UNPROTECT(lev);
-}
-
-
-#if LWIP_IGMP
-static err_t xemacpsif_mac_filter_update (struct netif *netif, struct ip_addr *group,
- u8_t action)
-{
- return 0;
-}
-#endif
-
-/*
- * xemacpsif_init():
- *
- * Should be called at the beginning of the program to set up the
- * network interface. It calls the function low_level_init() to do the
- * actual setup of the hardware.
- *
- */
-
-err_t xemacpsif_init(struct netif *netif)
-{
-#if LWIP_SNMP
- /* ifType ethernetCsmacd(6) @see RFC1213 */
- netif->link_type = 6;
- /* your link speed here */
- netif->link_speed = ;
- netif->ts = 0;
- netif->ifinoctets = 0;
- netif->ifinucastpkts = 0;
- netif->ifinnucastpkts = 0;
- netif->ifindiscards = 0;
- netif->ifoutoctets = 0;
- netif->ifoutucastpkts = 0;
- netif->ifoutnucastpkts = 0;
- netif->ifoutdiscards = 0;
-#endif
-
- netif->name[0] = IFNAME0;
- netif->name[1] = IFNAME1;
- netif->output = xemacpsif_output;
- netif->linkoutput = low_level_output;
-
- low_level_init(netif);
- return ERR_OK;
-}
-
-/*
- * xemacpsif_resetrx_on_no_rxdata():
- *
- * Should be called by the user at regular intervals, typically
- * from a timer (100 msecond). This is to provide a SW workaround
- * for the HW bug (SI #692601). Please refer to the function header
- * for the function resetrx_on_no_rxdata in xemacpsif_dma.c to
- * know more about the SI.
- *
- */
-
-void xemacpsif_resetrx_on_no_rxdata(struct netif *netif)
-{
- struct xemac_s *xemac = (struct xemac_s *)(netif->state);
- xemacpsif_s *xemacpsif = (xemacpsif_s *)(xemac->state);
-
- resetrx_on_no_rxdata(xemacpsif);
-}
projects / freertos / blobdiff