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if_my.c (266270) if_my.c (271827)
1/*-
2 * Written by: yen_cw@myson.com.tw
3 * Copyright (c) 2002 Myson Technology Inc.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:

--- 14 unchanged lines hidden (view full) ---

23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * Myson fast ethernet PCI NIC driver, available at: http://www.myson.com.tw/
28 */
29
30#include <sys/cdefs.h>
1/*-
2 * Written by: yen_cw@myson.com.tw
3 * Copyright (c) 2002 Myson Technology Inc.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:

--- 14 unchanged lines hidden (view full) ---

23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * Myson fast ethernet PCI NIC driver, available at: http://www.myson.com.tw/
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: head/sys/dev/my/if_my.c 266270 2014-05-16 21:19:17Z brueffer $");
31__FBSDID("$FreeBSD: head/sys/dev/my/if_my.c 271827 2014-09-18 20:59:59Z glebius $");
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/sockio.h>
36#include <sys/mbuf.h>
37#include <sys/malloc.h>
38#include <sys/kernel.h>
39#include <sys/socket.h>

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1116 MY_LOCK_ASSERT(sc);
1117 ifp = sc->my_ifp;
1118 while (!((rxstat = sc->my_cdata.my_rx_head->my_ptr->my_status)
1119 & MY_OWNByNIC)) {
1120 cur_rx = sc->my_cdata.my_rx_head;
1121 sc->my_cdata.my_rx_head = cur_rx->my_nextdesc;
1122
1123 if (rxstat & MY_ES) { /* error summary: give up this rx pkt */
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/sockio.h>
36#include <sys/mbuf.h>
37#include <sys/malloc.h>
38#include <sys/kernel.h>
39#include <sys/socket.h>

--- 1076 unchanged lines hidden (view full) ---

1116 MY_LOCK_ASSERT(sc);
1117 ifp = sc->my_ifp;
1118 while (!((rxstat = sc->my_cdata.my_rx_head->my_ptr->my_status)
1119 & MY_OWNByNIC)) {
1120 cur_rx = sc->my_cdata.my_rx_head;
1121 sc->my_cdata.my_rx_head = cur_rx->my_nextdesc;
1122
1123 if (rxstat & MY_ES) { /* error summary: give up this rx pkt */
1124 ifp->if_ierrors++;
1124 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1125 cur_rx->my_ptr->my_status = MY_OWNByNIC;
1126 continue;
1127 }
1128 /* No errors; receive the packet. */
1129 total_len = (rxstat & MY_FLNGMASK) >> MY_FLNGShift;
1130 total_len -= ETHER_CRC_LEN;
1131
1132 if (total_len < MINCLSIZE) {
1133 m = m_devget(mtod(cur_rx->my_mbuf, char *),
1134 total_len, 0, ifp, NULL);
1135 cur_rx->my_ptr->my_status = MY_OWNByNIC;
1136 if (m == NULL) {
1125 cur_rx->my_ptr->my_status = MY_OWNByNIC;
1126 continue;
1127 }
1128 /* No errors; receive the packet. */
1129 total_len = (rxstat & MY_FLNGMASK) >> MY_FLNGShift;
1130 total_len -= ETHER_CRC_LEN;
1131
1132 if (total_len < MINCLSIZE) {
1133 m = m_devget(mtod(cur_rx->my_mbuf, char *),
1134 total_len, 0, ifp, NULL);
1135 cur_rx->my_ptr->my_status = MY_OWNByNIC;
1136 if (m == NULL) {
1137 ifp->if_ierrors++;
1137 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1138 continue;
1139 }
1140 } else {
1141 m = cur_rx->my_mbuf;
1142 /*
1143 * Try to conjure up a new mbuf cluster. If that
1144 * fails, it means we have an out of memory condition
1145 * and should leave the buffer in place and continue.
1146 * This will result in a lost packet, but there's
1147 * little else we can do in this situation.
1148 */
1149 if (my_newbuf(sc, cur_rx) == ENOBUFS) {
1138 continue;
1139 }
1140 } else {
1141 m = cur_rx->my_mbuf;
1142 /*
1143 * Try to conjure up a new mbuf cluster. If that
1144 * fails, it means we have an out of memory condition
1145 * and should leave the buffer in place and continue.
1146 * This will result in a lost packet, but there's
1147 * little else we can do in this situation.
1148 */
1149 if (my_newbuf(sc, cur_rx) == ENOBUFS) {
1150 ifp->if_ierrors++;
1150 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1151 cur_rx->my_ptr->my_status = MY_OWNByNIC;
1152 continue;
1153 }
1154 m->m_pkthdr.rcvif = ifp;
1155 m->m_pkthdr.len = m->m_len = total_len;
1156 }
1151 cur_rx->my_ptr->my_status = MY_OWNByNIC;
1152 continue;
1153 }
1154 m->m_pkthdr.rcvif = ifp;
1155 m->m_pkthdr.len = m->m_len = total_len;
1156 }
1157 ifp->if_ipackets++;
1157 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1);
1158 eh = mtod(m, struct ether_header *);
1159#if NBPFILTER > 0
1160 /*
1161 * Handle BPF listeners. Let the BPF user see the packet, but
1162 * don't pass it up to the ether_input() layer unless it's a
1163 * broadcast packet, multicast packet, matches our ethernet
1164 * address or the interface is in promiscuous mode.
1165 */

--- 41 unchanged lines hidden (view full) ---

1207 u_int32_t txstat;
1208
1209 cur_tx = sc->my_cdata.my_tx_head;
1210 txstat = MY_TXSTATUS(cur_tx);
1211 if ((txstat & MY_OWNByNIC) || txstat == MY_UNSENT)
1212 break;
1213 if (!(CSR_READ_4(sc, MY_TCRRCR) & MY_Enhanced)) {
1214 if (txstat & MY_TXERR) {
1158 eh = mtod(m, struct ether_header *);
1159#if NBPFILTER > 0
1160 /*
1161 * Handle BPF listeners. Let the BPF user see the packet, but
1162 * don't pass it up to the ether_input() layer unless it's a
1163 * broadcast packet, multicast packet, matches our ethernet
1164 * address or the interface is in promiscuous mode.
1165 */

--- 41 unchanged lines hidden (view full) ---

1207 u_int32_t txstat;
1208
1209 cur_tx = sc->my_cdata.my_tx_head;
1210 txstat = MY_TXSTATUS(cur_tx);
1211 if ((txstat & MY_OWNByNIC) || txstat == MY_UNSENT)
1212 break;
1213 if (!(CSR_READ_4(sc, MY_TCRRCR) & MY_Enhanced)) {
1214 if (txstat & MY_TXERR) {
1215 ifp->if_oerrors++;
1215 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
1216 if (txstat & MY_EC) /* excessive collision */
1216 if (txstat & MY_EC) /* excessive collision */
1217 ifp->if_collisions++;
1217 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, 1);
1218 if (txstat & MY_LC) /* late collision */
1218 if (txstat & MY_LC) /* late collision */
1219 ifp->if_collisions++;
1219 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, 1);
1220 }
1220 }
1221 ifp->if_collisions += (txstat & MY_NCRMASK) >>
1222 MY_NCRShift;
1221 if_inc_counter(ifp, IFCOUNTER_COLLISIONS,
1222 (txstat & MY_NCRMASK) >> MY_NCRShift);
1223 }
1223 }
1224 ifp->if_opackets++;
1224 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
1225 m_freem(cur_tx->my_mbuf);
1226 cur_tx->my_mbuf = NULL;
1227 if (sc->my_cdata.my_tx_head == sc->my_cdata.my_tx_tail) {
1228 sc->my_cdata.my_tx_head = NULL;
1229 sc->my_cdata.my_tx_tail = NULL;
1230 break;
1231 }
1232 sc->my_cdata.my_tx_head = cur_tx->my_nextdesc;
1233 }
1234 if (CSR_READ_4(sc, MY_TCRRCR) & MY_Enhanced) {
1225 m_freem(cur_tx->my_mbuf);
1226 cur_tx->my_mbuf = NULL;
1227 if (sc->my_cdata.my_tx_head == sc->my_cdata.my_tx_tail) {
1228 sc->my_cdata.my_tx_head = NULL;
1229 sc->my_cdata.my_tx_tail = NULL;
1230 break;
1231 }
1232 sc->my_cdata.my_tx_head = cur_tx->my_nextdesc;
1233 }
1234 if (CSR_READ_4(sc, MY_TCRRCR) & MY_Enhanced) {
1235 ifp->if_collisions += (CSR_READ_4(sc, MY_TSR) & MY_NCRMask);
1235 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, (CSR_READ_4(sc, MY_TSR) & MY_NCRMask));
1236 }
1237 return;
1238}
1239
1240/*
1241 * TX 'end of channel' interrupt handler.
1242 */
1243static void

--- 44 unchanged lines hidden (view full) ---

1288 else
1289 break;
1290
1291 if (status & MY_RI) /* receive interrupt */
1292 my_rxeof(sc);
1293
1294 if ((status & MY_RBU) || (status & MY_RxErr)) {
1295 /* rx buffer unavailable or rx error */
1236 }
1237 return;
1238}
1239
1240/*
1241 * TX 'end of channel' interrupt handler.
1242 */
1243static void

--- 44 unchanged lines hidden (view full) ---

1288 else
1289 break;
1290
1291 if (status & MY_RI) /* receive interrupt */
1292 my_rxeof(sc);
1293
1294 if ((status & MY_RBU) || (status & MY_RxErr)) {
1295 /* rx buffer unavailable or rx error */
1296 ifp->if_ierrors++;
1296 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
1297#ifdef foo
1298 my_stop(sc);
1299 my_reset(sc);
1300 my_init_locked(sc);
1301#endif
1302 }
1303 if (status & MY_TI) /* tx interrupt */
1304 my_txeof(sc);

--- 391 unchanged lines hidden (view full) ---

1696
1697 sc = arg;
1698 MY_LOCK_ASSERT(sc);
1699 callout_reset(&sc->my_watchdog, hz, my_watchdog, sc);
1700 if (sc->my_timer == 0 || --sc->my_timer > 0)
1701 return;
1702
1703 ifp = sc->my_ifp;
1297#ifdef foo
1298 my_stop(sc);
1299 my_reset(sc);
1300 my_init_locked(sc);
1301#endif
1302 }
1303 if (status & MY_TI) /* tx interrupt */
1304 my_txeof(sc);

--- 391 unchanged lines hidden (view full) ---

1696
1697 sc = arg;
1698 MY_LOCK_ASSERT(sc);
1699 callout_reset(&sc->my_watchdog, hz, my_watchdog, sc);
1700 if (sc->my_timer == 0 || --sc->my_timer > 0)
1701 return;
1702
1703 ifp = sc->my_ifp;
1704 ifp->if_oerrors++;
1704 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
1705 if_printf(ifp, "watchdog timeout\n");
1706 if (!(my_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_LINKSTAT))
1707 if_printf(ifp, "no carrier - transceiver cable problem?\n");
1708 my_stop(sc);
1709 my_reset(sc);
1710 my_init_locked(sc);
1711 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
1712 my_start_locked(ifp);

--- 64 unchanged lines hidden --- 		1705 if_printf(ifp, "watchdog timeout\n");
1706 if (!(my_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_LINKSTAT))
1707 if_printf(ifp, "no carrier - transceiver cable problem?\n");
1708 my_stop(sc);
1709 my_reset(sc);
1710 my_init_locked(sc);
1711 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
1712 my_start_locked(ifp);

--- 64 unchanged lines hidden ---