Kal Torak writes:
| Just wondering if anyone has been able to use the new DEF-580TX
| quad port card without any problems??

No ... doesn't seem possible but you can make it happier with these patches.
I need to test under current and then I will commit them.

Seems like the chip has a fundamental problem to block any I/O but it's
own under have RX load.  Happens under Linux, Windows, FreeBSD etc.

The Znyx (http://www.znyx.com/) cards seem to work fine under -stable.
I have the 32 and 64 bit versions of the dc(4) versions.

Doug A.

Index: sys/pci/if_ste.c
===================================================================
RCS file: /cvs/src/sys/pci/if_ste.c,v
retrieving revision 1.14.2.5
diff -u -r1.14.2.5 if_ste.c
--- sys/pci/if_ste.c    16 Dec 2001 15:46:08 -0000      1.14.2.5
+++ sys/pci/if_ste.c    3 Aug 2002 03:36:06 -0000
@@ -45,6 +45,7 @@
 #include <net/ethernet.h>
 #include <net/if_dl.h>
 #include <net/if_media.h>
+#include <net/if_vlan_var.h>
 
 #include <net/bpf.h>
 
@@ -415,6 +416,7 @@
 {
        struct ste_softc        *sc;
        struct mii_data         *mii;
+       int                     i;
 
        sc = device_get_softc(dev);
        mii = device_get_softc(sc->ste_miibus);
@@ -425,6 +427,15 @@
                STE_CLRBIT2(sc, STE_MACCTL0, STE_MACCTL0_FULLDUPLEX);
        }
 
+       STE_SETBIT4(sc, STE_ASICCTL,STE_ASICCTL_RX_RESET |
+                   STE_ASICCTL_TX_RESET);
+       for (i = 0; i < STE_TIMEOUT; i++) {
+               if (!(CSR_READ_4(sc, STE_ASICCTL) & STE_ASICCTL_RESET_BUSY))
+                       break;
+       }
+       if (i == STE_TIMEOUT)
+               printf("ste%d: rx reset never completed\n", sc->ste_unit);
+
        return;
 }
  
@@ -643,6 +654,9 @@
                        ste_stats_update(sc);
                }
 
+               if (status & STE_ISR_LINKEVENT)
+                       mii_pollstat(device_get_softc(sc->ste_miibus));
+
                if (status & STE_ISR_HOSTERR) {
                        ste_reset(sc);
                        ste_init(sc);
@@ -669,17 +683,20 @@
         struct mbuf            *m;
         struct ifnet           *ifp;
        struct ste_chain_onefrag        *cur_rx;
-       int                     total_len = 0;
+       int                     total_len = 0, count=0;
        u_int32_t               rxstat;
 
        ifp = &sc->arpcom.ac_if;
 
-again:
+       while((rxstat = sc->ste_cdata.ste_rx_head->ste_ptr->ste_status)
+             & STE_RXSTAT_DMADONE) {
+               if ((STE_RX_LIST_CNT - count) < 3) {
+                       break;
+               }
 
-       while((rxstat = sc->ste_cdata.ste_rx_head->ste_ptr->ste_status)) {
                cur_rx = sc->ste_cdata.ste_rx_head;
                sc->ste_cdata.ste_rx_head = cur_rx->ste_next;
-
+ 
                /*
                 * If an error occurs, update stats, clear the
                 * status word and leave the mbuf cluster in place:
@@ -730,29 +747,9 @@
                /* Remove header from mbuf and pass it on. */
                m_adj(m, sizeof(struct ether_header));
                ether_input(ifp, eh, m);
-       }
-
-       /*
-        * Handle the 'end of channel' condition. When the upload
-        * engine hits the end of the RX ring, it will stall. This
-        * is our cue to flush the RX ring, reload the uplist pointer
-        * register and unstall the engine.
-        * XXX This is actually a little goofy. With the ThunderLAN
-        * chip, you get an interrupt when the receiver hits the end
-        * of the receive ring, which tells you exactly when you
-        * you need to reload the ring pointer. Here we have to
-        * fake it. I'm mad at myself for not being clever enough
-        * to avoid the use of a goto here.
-        */
-       if (CSR_READ_4(sc, STE_RX_DMALIST_PTR) == 0 ||
-               CSR_READ_4(sc, STE_DMACTL) & STE_DMACTL_RXDMA_STOPPED) {
-               STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_RXDMA_STALL);
-               ste_wait(sc);
-               CSR_WRITE_4(sc, STE_RX_DMALIST_PTR,
-                       vtophys(&sc->ste_ldata->ste_rx_list[0]));
-               sc->ste_cdata.ste_rx_head = &sc->ste_cdata.ste_rx_chain[0];
-               STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_RXDMA_UNSTALL);
-               goto again;
+               
+               cur_rx->ste_ptr->ste_status = 0;
+               count++;
        }
 
        return;
@@ -836,11 +833,9 @@
        void                    *xsc;
 {
        struct ste_softc        *sc;
-       struct ste_stats        stats;
        struct ifnet            *ifp;
        struct mii_data         *mii;
-       int                     i, s;
-       u_int8_t                *p;
+       int                     s;
 
        s = splimp();
 
@@ -848,24 +843,23 @@
        ifp = &sc->arpcom.ac_if;
        mii = device_get_softc(sc->ste_miibus);
 
-       p = (u_int8_t *)&stats;
-
-       for (i = 0; i < sizeof(stats); i++) {
-               *p = CSR_READ_1(sc, STE_STATS + i);
-               p++;
-       }
-
-       ifp->if_collisions += stats.ste_single_colls +
-           stats.ste_multi_colls + stats.ste_late_colls;
+        ifp->if_collisions += CSR_READ_1(sc, STE_LATE_COLLS)
+            + CSR_READ_1(sc, STE_MULTI_COLLS)
+            + CSR_READ_1(sc, STE_SINGLE_COLLS);
 
-       mii_tick(mii);
        if (!sc->ste_link) {
                mii_pollstat(mii);
                if (mii->mii_media_status & IFM_ACTIVE &&
-                   IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE)
+                   IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
                        sc->ste_link++;
+                       /* 
+                        * we don't get a call-back on re-init so do it 
+                        * otherwise we get stuck in the wrong link state
+                        */
+                       ste_miibus_statchg(sc->ste_dev);
                        if (ifp->if_snd.ifq_head != NULL)
                                ste_start(ifp);
+               }
        }
 
        sc->ste_stat_ch = timeout(ste_stats_update, sc, hz);
@@ -916,6 +910,7 @@
        sc = device_get_softc(dev);
        unit = device_get_unit(dev);
        bzero(sc, sizeof(struct ste_softc));
+       sc->ste_dev = dev;
 
        /*
         * Handle power management nonsense.
@@ -1069,11 +1064,18 @@
        ifp->if_baudrate = 10000000;
        ifp->if_snd.ifq_maxlen = STE_TX_LIST_CNT - 1;
 
+       sc->ste_tx_thresh = STE_TXSTART_THRESH;
+
        /*
         * Call MI attach routine.
         */
        ether_ifattach(ifp, ETHER_BPF_SUPPORTED);
 
+        /*
+         * Tell the upper layer(s) we support long frames.
+         */
+        ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
+ 
 fail:
        splx(s);
        return(error);
@@ -1136,7 +1138,7 @@
        c->ste_mbuf = m_new;
        c->ste_ptr->ste_status = 0;
        c->ste_ptr->ste_frag.ste_addr = vtophys(mtod(m_new, caddr_t));
-       c->ste_ptr->ste_frag.ste_len = 1536 | STE_FRAG_LAST;
+       c->ste_ptr->ste_frag.ste_len = (1536 + EVL_ENCAPLEN) | STE_FRAG_LAST;
 
        return(0);
 }
@@ -1166,7 +1168,7 @@
                        ld->ste_rx_list[i].ste_next =
                            vtophys(&ld->ste_rx_list[i + 1]);
                }
-
+               ld->ste_rx_list[i].ste_status = 0;
        }
 
        cd->ste_rx_head = &cd->ste_rx_chain[0];
@@ -1185,6 +1187,8 @@
        ld = sc->ste_ldata;
        for (i = 0; i < STE_TX_LIST_CNT; i++) {
                cd->ste_tx_chain[i].ste_ptr = &ld->ste_tx_list[i];
+               cd->ste_tx_chain[i].ste_ptr->ste_next = 0;
+               cd->ste_tx_chain[i].ste_ptr->ste_ctl  = 0;
                cd->ste_tx_chain[i].ste_phys = vtophys(&ld->ste_tx_list[i]);
                if (i == (STE_TX_LIST_CNT - 1))
                        cd->ste_tx_chain[i].ste_next =
@@ -1200,10 +1204,6 @@
                             &cd->ste_tx_chain[i - 1];
        }
 
-
-       bzero((char *)ld->ste_tx_list,
-           sizeof(struct ste_desc) * STE_TX_LIST_CNT);
-
        cd->ste_tx_prod = 0;
        cd->ste_tx_cons = 0;
        cd->ste_tx_cnt = 0;
@@ -1241,6 +1241,9 @@
                return;
        }
 
+       /* Set RX polling interval */
+       CSR_WRITE_1(sc, STE_RX_DMAPOLL_PERIOD, 1);
+
        /* Init TX descriptors */
        ste_init_tx_list(sc);
 
@@ -1280,20 +1283,21 @@
        STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_RXDMA_UNSTALL);
        STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_RXDMA_UNSTALL);
 
-       /* Set TX polling interval */
-       CSR_WRITE_1(sc, STE_TX_DMAPOLL_PERIOD, 64);
+       /* Set TX polling interval (defer until we TX first packet */
+       CSR_WRITE_1(sc, STE_TX_DMAPOLL_PERIOD, 0);
 
        /* Load address of the TX list */
        STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_TXDMA_STALL);
        ste_wait(sc);
-       CSR_WRITE_4(sc, STE_TX_DMALIST_PTR,
-           vtophys(&sc->ste_ldata->ste_tx_list[0]));
+       CSR_WRITE_4(sc, STE_TX_DMALIST_PTR, 0);
        STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_TXDMA_UNSTALL);
        STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_TXDMA_UNSTALL);
        ste_wait(sc);
+       sc->ste_tx_prev_idx=-1;
 
        /* Enable receiver and transmitter */
        CSR_WRITE_2(sc, STE_MACCTL0, 0);
+       CSR_WRITE_2(sc, STE_MACCTL1, 0);
        STE_SETBIT2(sc, STE_MACCTL1, STE_MACCTL1_TX_ENABLE);
        STE_SETBIT2(sc, STE_MACCTL1, STE_MACCTL1_RX_ENABLE);
 
@@ -1304,6 +1308,9 @@
        CSR_WRITE_2(sc, STE_ISR, 0xFFFF);
        CSR_WRITE_2(sc, STE_IMR, STE_INTRS);
 
+       /* Accept VLAN length packets */
+       CSR_WRITE_2(sc, STE_MAX_FRAMELEN, ETHER_MAX_LEN + EVL_ENCAPLEN);
+
        ste_ifmedia_upd(ifp);
 
        ifp->if_flags |= IFF_RUNNING;
@@ -1333,6 +1340,11 @@
        STE_SETBIT2(sc, STE_DMACTL, STE_DMACTL_TXDMA_STALL);
        STE_SETBIT2(sc, STE_DMACTL, STE_DMACTL_RXDMA_STALL);
        ste_wait(sc);
+       /* 
+        * Try really hard to stop the RX engine or under heavy RX 
+        * data chip will write into de-allocated memory.
+        */
+       ste_reset(sc);
 
        sc->ste_link = 0;
 
@@ -1350,6 +1362,8 @@
                }
        }
 
+       bzero(sc->ste_ldata, sizeof(struct ste_list_data));
+
        ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE);
 
        return;
@@ -1413,8 +1427,10 @@
                            sc->ste_if_flags & IFF_PROMISC) {
                                STE_CLRBIT1(sc, STE_RX_MODE,
                                    STE_RXMODE_PROMISC);
-                       } else if (!(ifp->if_flags & IFF_RUNNING)) {
-                               sc->ste_tx_thresh = STE_MIN_FRAMELEN;
+                       } 
+                       if (!(ifp->if_flags & IFF_RUNNING)) {
+                               sc->ste_tx_thresh = STE_MIN_FRAMELEN * 2;
+                               sc->ste_tx_thresh = STE_TXSTART_THRESH;
                                ste_init(sc);
                        }
                } else {
@@ -1457,14 +1473,13 @@
 
        d = c->ste_ptr;
        d->ste_ctl = 0;
-       d->ste_next = 0;
 
        for (m = m_head, frag = 0; m != NULL; m = m->m_next) {
                if (m->m_len != 0) {
                        if (frag == STE_MAXFRAGS)
                                break;
                        total_len += m->m_len;
-                       f = &c->ste_ptr->ste_frags[frag];
+                       f = &d->ste_frags[frag];
                        f->ste_addr = vtophys(mtod(m, vm_offset_t));
                        f->ste_len = m->m_len;
                        frag++;
@@ -1472,8 +1487,8 @@
        }
 
        c->ste_mbuf = m_head;
-       c->ste_ptr->ste_frags[frag - 1].ste_len |= STE_FRAG_LAST;
-       c->ste_ptr->ste_ctl = total_len;
+       d->ste_frags[frag - 1].ste_len |= STE_FRAG_LAST;
+       d->ste_ctl = 1;
 
        return(0);
 }
@@ -1483,7 +1498,7 @@
 {
        struct ste_softc        *sc;
        struct mbuf             *m_head = NULL;
-       struct ste_chain        *prev = NULL, *cur_tx = NULL, *start_tx;
+       struct ste_chain        *cur_tx = NULL;
        int                     idx;
 
        sc = ifp->if_softc;
@@ -1495,7 +1510,6 @@
                return;
 
        idx = sc->ste_cdata.ste_tx_prod;
-       start_tx = &sc->ste_cdata.ste_tx_chain[idx];
 
        while(sc->ste_cdata.ste_tx_chain[idx].ste_mbuf == NULL) {
 
@@ -1512,9 +1526,32 @@
 
                ste_encap(sc, cur_tx, m_head);
 
-               if (prev != NULL)
-                       prev->ste_ptr->ste_next = cur_tx->ste_phys;
-               prev = cur_tx;
+               cur_tx->ste_ptr->ste_next = 0;
+
+               if(sc->ste_tx_prev_idx < 0){
+                       cur_tx->ste_ptr->ste_ctl = STE_TXCTL_DMAINTR | 1;
+                       /* Load address of the TX list */
+                       STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_TXDMA_STALL);
+                       ste_wait(sc);
+
+                       CSR_WRITE_4(sc, STE_TX_DMALIST_PTR,
+                           vtophys(&sc->ste_ldata->ste_tx_list[0]));
+
+                       /* Set TX polling interval to start TX engine */
+                       CSR_WRITE_1(sc, STE_TX_DMAPOLL_PERIOD, 64);
+                 
+                       STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_TXDMA_UNSTALL);
+                       STE_SETBIT4(sc, STE_DMACTL, STE_DMACTL_TXDMA_UNSTALL);
+                       ste_wait(sc);
+
+               }else{
+                       cur_tx->ste_ptr->ste_ctl = STE_TXCTL_DMAINTR | 1;
+                       sc->ste_cdata.ste_tx_chain[
+                           sc->ste_tx_prev_idx].ste_ptr->ste_next
+                               = cur_tx->ste_phys;
+               }
+
+               sc->ste_tx_prev_idx=idx;
 
                /*
                 * If there's a BPF listener, bounce a copy of this frame
@@ -1525,18 +1562,9 @@
 
                STE_INC(idx, STE_TX_LIST_CNT);
                sc->ste_cdata.ste_tx_cnt++;
+               ifp->if_timer = 5;
+               sc->ste_cdata.ste_tx_prod = idx;
        }
-
-       if (cur_tx == NULL)
-               return;
-
-       cur_tx->ste_ptr->ste_ctl |= STE_TXCTL_DMAINTR;
-
-       /* Start transmission */
-       sc->ste_cdata.ste_tx_prod = idx;
-       start_tx->ste_prev->ste_ptr->ste_next = start_tx->ste_phys;
-
-       ifp->if_timer = 5;
 
        return;
 }
Index: sys/pci/if_stereg.h
===================================================================
RCS file: /cvs/src/sys/pci/if_stereg.h,v
retrieving revision 1.5.2.1
diff -u -r1.5.2.1 if_stereg.h
--- sys/pci/if_stereg.h 23 Aug 2001 20:04:06 -0000      1.5.2.1
+++ sys/pci/if_stereg.h 3 Aug 2002 03:36:06 -0000
@@ -93,6 +93,10 @@
 #define STE_MAR3               0x66
 #define STE_STATS              0x68
 
+#define STE_LATE_COLLS  0x75
+#define STE_MULTI_COLLS        0x76
+#define STE_SINGLE_COLLS 0x77  
+
 #define STE_DMACTL_RXDMA_STOPPED       0x00000001
 #define STE_DMACTL_TXDMA_CMPREQ                0x00000002
 #define STE_DMACTL_TXDMA_STOPPED       0x00000004
@@ -224,13 +228,13 @@
  * The number of bytes that must in present in the TX FIFO before
  * transmission begins. Value should be in increments of 4 bytes.
  */
-#define STE_TXSTART_THRESH             0x1FFF
+#define STE_TXSTART_THRESH             0x1FFC
 
 /*
  * Number of bytes that must be present in the RX FIFO before
  * an RX EARLY interrupt is generated.
  */
-#define STE_RXEARLY_THRESH             0x1FFF
+#define STE_RXEARLY_THRESH             0x1FFC
 
 #define STE_WAKEEVENT_WAKEPKT_ENB      0x01
 #define STE_WAKEEVENT_MAGICPKT_ENB     0x02
@@ -272,8 +276,9 @@
 #define STE_IMR_RX_DMADONE             0x0400
 
 #define STE_INTRS                                      \
-       (STE_IMR_RX_DMADONE|STE_IMR_TX_DMADONE|STE_IMR_STATS_OFLOW|     \
-       STE_IMR_TX_DONE|STE_IMR_HOSTERR|STE_IMR_RX_EARLY)
+       (STE_IMR_RX_DMADONE|STE_IMR_TX_DMADONE| \
+       STE_IMR_TX_DONE|STE_IMR_HOSTERR| \
+        STE_IMR_LINKEVENT)
 
 #define STE_ISR_INTLATCH               0x0001
 #define STE_ISR_HOSTERR                        0x0002
@@ -406,7 +411,7 @@
 #define STE_FRAG_LAST          0x80000000
 #define STE_FRAG_LEN           0x00001FFF
 
-#define STE_MAXFRAGS   63
+#define STE_MAXFRAGS   8
 
 struct ste_desc {
        u_int32_t               ste_next;
@@ -460,9 +465,10 @@
 #define STE_MIN_FRAMELEN       60
 #define STE_PACKET_SIZE                1536
 #define ETHER_ALIGN            2
-#define STE_RX_LIST_CNT                128
-#define STE_TX_LIST_CNT                256
+#define STE_RX_LIST_CNT                64
+#define STE_TX_LIST_CNT                64
 #define STE_INC(x, y)          (x) = (x + 1) % y
+#define STE_NEXT(x, y)         (x + 1) % y
 
 struct ste_type {
        u_int16_t               ste_vid;
@@ -509,10 +515,12 @@
        void                    *ste_intrhand;
        struct ste_type         *ste_info;
        device_t                ste_miibus;
+       device_t                ste_dev;
        int                     ste_unit;
        int                     ste_tx_thresh;
        u_int8_t                ste_link;
        int                     ste_if_flags;
+       int                     ste_tx_prev_idx;
        struct ste_list_data    *ste_ldata;
        struct ste_chain_data   ste_cdata;
        struct callout_handle   ste_stat_ch;

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