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if_stge.c (167190) if_stge.c (169157)
1/* $NetBSD: if_stge.c,v 1.32 2005/12/11 12:22:49 christos Exp $ */
2
3/*-
4 * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.

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37 */
38
39/*
40 * Device driver for the Sundance Tech. TC9021 10/100/1000
41 * Ethernet controller.
42 */
43
44#include <sys/cdefs.h>
1/* $NetBSD: if_stge.c,v 1.32 2005/12/11 12:22:49 christos Exp $ */
2
3/*-
4 * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.

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37 */
38
39/*
40 * Device driver for the Sundance Tech. TC9021 10/100/1000
41 * Ethernet controller.
42 */
43
44#include <sys/cdefs.h>
45__FBSDID("$FreeBSD: head/sys/dev/stge/if_stge.c 167190 2007-03-04 03:38:08Z csjp $");
45__FBSDID("$FreeBSD: head/sys/dev/stge/if_stge.c 169157 2007-05-01 03:15:04Z yongari $");
46
47#ifdef HAVE_KERNEL_OPTION_HEADERS
48#include "opt_device_polling.h"
49#endif
50
51#include <sys/param.h>
52#include <sys/systm.h>
53#include <sys/endian.h>

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132static int stge_detach(device_t);
133static void stge_shutdown(device_t);
134static int stge_suspend(device_t);
135static int stge_resume(device_t);
136
137static int stge_encap(struct stge_softc *, struct mbuf **);
138static void stge_start(struct ifnet *);
139static void stge_start_locked(struct ifnet *);
46
47#ifdef HAVE_KERNEL_OPTION_HEADERS
48#include "opt_device_polling.h"
49#endif
50
51#include <sys/param.h>
52#include <sys/systm.h>
53#include <sys/endian.h>

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132static int stge_detach(device_t);
133static void stge_shutdown(device_t);
134static int stge_suspend(device_t);
135static int stge_resume(device_t);
136
137static int stge_encap(struct stge_softc *, struct mbuf **);
138static void stge_start(struct ifnet *);
139static void stge_start_locked(struct ifnet *);
140static void stge_watchdog(struct ifnet *);
140static void stge_watchdog(struct stge_softc *);
141static int stge_ioctl(struct ifnet *, u_long, caddr_t);
142static void stge_init(void *);
143static void stge_init_locked(struct stge_softc *);
144static void stge_vlan_setup(struct stge_softc *);
145static void stge_stop(struct stge_softc *);
146static void stge_start_tx(struct stge_softc *);
147static void stge_start_rx(struct stge_softc *);
148static void stge_stop_tx(struct stge_softc *);

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739 goto fail;
740 }
741
742 ifp->if_softc = sc;
743 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
744 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
745 ifp->if_ioctl = stge_ioctl;
746 ifp->if_start = stge_start;
141static int stge_ioctl(struct ifnet *, u_long, caddr_t);
142static void stge_init(void *);
143static void stge_init_locked(struct stge_softc *);
144static void stge_vlan_setup(struct stge_softc *);
145static void stge_stop(struct stge_softc *);
146static void stge_start_tx(struct stge_softc *);
147static void stge_start_rx(struct stge_softc *);
148static void stge_stop_tx(struct stge_softc *);

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739 goto fail;
740 }
741
742 ifp->if_softc = sc;
743 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
744 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
745 ifp->if_ioctl = stge_ioctl;
746 ifp->if_start = stge_start;
747 ifp->if_watchdog = stge_watchdog;
747 ifp->if_timer = 0;
748 ifp->if_watchdog = NULL;
748 ifp->if_init = stge_init;
749 ifp->if_mtu = ETHERMTU;
750 ifp->if_snd.ifq_drv_maxlen = STGE_TX_RING_CNT - 1;
751 IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen);
752 IFQ_SET_READY(&ifp->if_snd);
753 /* Revision B3 and earlier chips have checksum bug. */
754 if (sc->sc_rev >= 0x0c) {
755 ifp->if_hwassist = STGE_CSUM_FEATURES;

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1349 ETHER_BPF_MTAP(ifp, m_head);
1350 }
1351
1352 if (enq > 0) {
1353 /* Transmit */
1354 CSR_WRITE_4(sc, STGE_DMACtrl, DMAC_TxDMAPollNow);
1355
1356 /* Set a timeout in case the chip goes out to lunch. */
749 ifp->if_init = stge_init;
750 ifp->if_mtu = ETHERMTU;
751 ifp->if_snd.ifq_drv_maxlen = STGE_TX_RING_CNT - 1;
752 IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen);
753 IFQ_SET_READY(&ifp->if_snd);
754 /* Revision B3 and earlier chips have checksum bug. */
755 if (sc->sc_rev >= 0x0c) {
756 ifp->if_hwassist = STGE_CSUM_FEATURES;

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1350 ETHER_BPF_MTAP(ifp, m_head);
1351 }
1352
1353 if (enq > 0) {
1354 /* Transmit */
1355 CSR_WRITE_4(sc, STGE_DMACtrl, DMAC_TxDMAPollNow);
1356
1357 /* Set a timeout in case the chip goes out to lunch. */
1357 ifp->if_timer = 5;
1358 sc->sc_watchdog_timer = 5;
1358 }
1359}
1360
1361/*
1359 }
1360}
1361
1362/*
1362 * stge_watchdog: [ifnet interface function]
1363 * stge_watchdog:
1363 *
1364 * Watchdog timer handler.
1365 */
1366static void
1364 *
1365 * Watchdog timer handler.
1366 */
1367static void
1367stge_watchdog(struct ifnet *ifp)
1368stge_watchdog(struct stge_softc *sc)
1368{
1369{
1369 struct stge_softc *sc;
1370 struct ifnet *ifp;
1370
1371
1371 sc = ifp->if_softc;
1372 STGE_LOCK_ASSERT(sc);
1372
1373
1373 STGE_LOCK(sc);
1374 if (sc->sc_watchdog_timer == 0 || --sc->sc_watchdog_timer)
1375 return;
1376
1377 ifp = sc->sc_ifp;
1374 if_printf(sc->sc_ifp, "device timeout\n");
1375 ifp->if_oerrors++;
1376 stge_init_locked(sc);
1378 if_printf(sc->sc_ifp, "device timeout\n");
1379 ifp->if_oerrors++;
1380 stge_init_locked(sc);
1377 STGE_UNLOCK(sc);
1378}
1379
1380/*
1381 * stge_ioctl: [ifnet interface function]
1382 *
1383 * Handle control requests from the operator.
1384 */
1385static int

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1672 m_freem(txd->tx_m);
1673 txd->tx_m = NULL;
1674 STAILQ_REMOVE_HEAD(&sc->sc_cdata.stge_txbusyq, tx_q);
1675 STAILQ_INSERT_TAIL(&sc->sc_cdata.stge_txfreeq, txd, tx_q);
1676 txd = STAILQ_FIRST(&sc->sc_cdata.stge_txbusyq);
1677 }
1678 sc->sc_cdata.stge_tx_cons = cons;
1679 if (sc->sc_cdata.stge_tx_cnt == 0)
1381}
1382
1383/*
1384 * stge_ioctl: [ifnet interface function]
1385 *
1386 * Handle control requests from the operator.
1387 */
1388static int

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1675 m_freem(txd->tx_m);
1676 txd->tx_m = NULL;
1677 STAILQ_REMOVE_HEAD(&sc->sc_cdata.stge_txbusyq, tx_q);
1678 STAILQ_INSERT_TAIL(&sc->sc_cdata.stge_txfreeq, txd, tx_q);
1679 txd = STAILQ_FIRST(&sc->sc_cdata.stge_txbusyq);
1680 }
1681 sc->sc_cdata.stge_tx_cons = cons;
1682 if (sc->sc_cdata.stge_tx_cnt == 0)
1680 ifp->if_timer = 0;
1683 sc->sc_watchdog_timer = 0;
1681
1682 bus_dmamap_sync(sc->sc_cdata.stge_tx_ring_tag,
1683 sc->sc_cdata.stge_tx_ring_map,
1684 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1685}
1686
1687static __inline void
1688stge_discard_rxbuf(struct stge_softc *sc, int idx)

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1947 * Relcaim any pending Tx descriptors to release mbufs in a
1948 * timely manner as we don't generate Tx completion interrupts
1949 * for every frame. This limits the delay to a maximum of one
1950 * second.
1951 */
1952 if (sc->sc_cdata.stge_tx_cnt != 0)
1953 stge_txeof(sc);
1954
1684
1685 bus_dmamap_sync(sc->sc_cdata.stge_tx_ring_tag,
1686 sc->sc_cdata.stge_tx_ring_map,
1687 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1688}
1689
1690static __inline void
1691stge_discard_rxbuf(struct stge_softc *sc, int idx)

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1950 * Relcaim any pending Tx descriptors to release mbufs in a
1951 * timely manner as we don't generate Tx completion interrupts
1952 * for every frame. This limits the delay to a maximum of one
1953 * second.
1954 */
1955 if (sc->sc_cdata.stge_tx_cnt != 0)
1956 stge_txeof(sc);
1957
1958 stge_watchdog(sc);
1959
1955 callout_reset(&sc->sc_tick_ch, hz, stge_tick, sc);
1956}
1957
1958/*
1959 * stge_stats_update:
1960 *
1961 * Read the TC9021 statistics counters.
1962 */

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2298 uint32_t v;
2299 int i;
2300
2301 STGE_LOCK_ASSERT(sc);
2302 /*
2303 * Stop the one second clock.
2304 */
2305 callout_stop(&sc->sc_tick_ch);
1960 callout_reset(&sc->sc_tick_ch, hz, stge_tick, sc);
1961}
1962
1963/*
1964 * stge_stats_update:
1965 *
1966 * Read the TC9021 statistics counters.
1967 */

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2303 uint32_t v;
2304 int i;
2305
2306 STGE_LOCK_ASSERT(sc);
2307 /*
2308 * Stop the one second clock.
2309 */
2310 callout_stop(&sc->sc_tick_ch);
2311 sc->sc_watchdog_timer = 0;
2306
2307 /*
2308 * Reset the chip to a known state.
2309 */
2310 stge_reset(sc, STGE_RESET_FULL);
2311
2312 /*
2313 * Disable interrupts.

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2358 }
2359 }
2360
2361 /*
2362 * Mark the interface down and cancel the watchdog timer.
2363 */
2364 ifp = sc->sc_ifp;
2365 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2312
2313 /*
2314 * Reset the chip to a known state.
2315 */
2316 stge_reset(sc, STGE_RESET_FULL);
2317
2318 /*
2319 * Disable interrupts.

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2364 }
2365 }
2366
2367 /*
2368 * Mark the interface down and cancel the watchdog timer.
2369 */
2370 ifp = sc->sc_ifp;
2371 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
2366 ifp->if_timer = 0;
2367}
2368
2369static void
2370stge_start_tx(struct stge_softc *sc)
2371{
2372 uint32_t v;
2373 int i;
2374

--- 324 unchanged lines hidden --- 		2372}
2373
2374static void
2375stge_start_tx(struct stge_softc *sc)
2376{
2377 uint32_t v;
2378 int i;
2379

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