diff options
author | imp <imp@FreeBSD.org> | 2008-08-10 09:45:52 +0000 |
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committer | imp <imp@FreeBSD.org> | 2008-08-10 09:45:52 +0000 |
commit | eefa09e8e9f0c2a49f9ab794445a8c081bf2cdbc (patch) | |
tree | 26ead7144107d033b293c6ec81314e8ad4e94607 /sys/dev/xl/if_xl.c | |
parent | 55e9379b978a485f3fde8543e8e5fe352aabbdd1 (diff) | |
download | FreeBSD-src-eefa09e8e9f0c2a49f9ab794445a8c081bf2cdbc.zip FreeBSD-src-eefa09e8e9f0c2a49f9ab794445a8c081bf2cdbc.tar.gz |
Move the xl driver form sys/pci to sys/dev/xl for consistency.
Diffstat (limited to 'sys/dev/xl/if_xl.c')
-rw-r--r-- | sys/dev/xl/if_xl.c | 3366 |
1 files changed, 3366 insertions, 0 deletions
diff --git a/sys/dev/xl/if_xl.c b/sys/dev/xl/if_xl.c new file mode 100644 index 0000000..d7c45ab --- /dev/null +++ b/sys/dev/xl/if_xl.c @@ -0,0 +1,3366 @@ +/*- + * Copyright (c) 1997, 1998, 1999 + * Bill Paul <wpaul@ctr.columbia.edu>. 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Bill Paul. + * 4. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``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 Bill Paul OR THE VOICES IN HIS HEAD + * 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * 3Com 3c90x Etherlink XL PCI NIC driver + * + * Supports the 3Com "boomerang", "cyclone" and "hurricane" PCI + * bus-master chips (3c90x cards and embedded controllers) including + * the following: + * + * 3Com 3c900-TPO 10Mbps/RJ-45 + * 3Com 3c900-COMBO 10Mbps/RJ-45,AUI,BNC + * 3Com 3c905-TX 10/100Mbps/RJ-45 + * 3Com 3c905-T4 10/100Mbps/RJ-45 + * 3Com 3c900B-TPO 10Mbps/RJ-45 + * 3Com 3c900B-COMBO 10Mbps/RJ-45,AUI,BNC + * 3Com 3c900B-TPC 10Mbps/RJ-45,BNC + * 3Com 3c900B-FL 10Mbps/Fiber-optic + * 3Com 3c905B-COMBO 10/100Mbps/RJ-45,AUI,BNC + * 3Com 3c905B-TX 10/100Mbps/RJ-45 + * 3Com 3c905B-FL/FX 10/100Mbps/Fiber-optic + * 3Com 3c905C-TX 10/100Mbps/RJ-45 (Tornado ASIC) + * 3Com 3c980-TX 10/100Mbps server adapter (Hurricane ASIC) + * 3Com 3c980C-TX 10/100Mbps server adapter (Tornado ASIC) + * 3Com 3cSOHO100-TX 10/100Mbps/RJ-45 (Hurricane ASIC) + * 3Com 3c450-TX 10/100Mbps/RJ-45 (Tornado ASIC) + * 3Com 3c555 10/100Mbps/RJ-45 (MiniPCI, Laptop Hurricane) + * 3Com 3c556 10/100Mbps/RJ-45 (MiniPCI, Hurricane ASIC) + * 3Com 3c556B 10/100Mbps/RJ-45 (MiniPCI, Hurricane ASIC) + * 3Com 3c575TX 10/100Mbps/RJ-45 (Cardbus, Hurricane ASIC) + * 3Com 3c575B 10/100Mbps/RJ-45 (Cardbus, Hurricane ASIC) + * 3Com 3c575C 10/100Mbps/RJ-45 (Cardbus, Hurricane ASIC) + * 3Com 3cxfem656 10/100Mbps/RJ-45 (Cardbus, Hurricane ASIC) + * 3Com 3cxfem656b 10/100Mbps/RJ-45 (Cardbus, Hurricane ASIC) + * 3Com 3cxfem656c 10/100Mbps/RJ-45 (Cardbus, Tornado ASIC) + * Dell Optiplex GX1 on-board 3c918 10/100Mbps/RJ-45 + * Dell on-board 3c920 10/100Mbps/RJ-45 + * Dell Precision on-board 3c905B 10/100Mbps/RJ-45 + * Dell Latitude laptop docking station embedded 3c905-TX + * + * Written by Bill Paul <wpaul@ctr.columbia.edu> + * Electrical Engineering Department + * Columbia University, New York City + */ +/* + * The 3c90x series chips use a bus-master DMA interface for transfering + * packets to and from the controller chip. Some of the "vortex" cards + * (3c59x) also supported a bus master mode, however for those chips + * you could only DMA packets to/from a contiguous memory buffer. For + * transmission this would mean copying the contents of the queued mbuf + * chain into an mbuf cluster and then DMAing the cluster. This extra + * copy would sort of defeat the purpose of the bus master support for + * any packet that doesn't fit into a single mbuf. + * + * By contrast, the 3c90x cards support a fragment-based bus master + * mode where mbuf chains can be encapsulated using TX descriptors. + * This is similar to other PCI chips such as the Texas Instruments + * ThunderLAN and the Intel 82557/82558. + * + * The "vortex" driver (if_vx.c) happens to work for the "boomerang" + * bus master chips because they maintain the old PIO interface for + * backwards compatibility, but starting with the 3c905B and the + * "cyclone" chips, the compatibility interface has been dropped. + * Since using bus master DMA is a big win, we use this driver to + * support the PCI "boomerang" chips even though they work with the + * "vortex" driver in order to obtain better performance. + */ + +#ifdef HAVE_KERNEL_OPTION_HEADERS +#include "opt_device_polling.h" +#endif + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/sockio.h> +#include <sys/endian.h> +#include <sys/mbuf.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/socket.h> +#include <sys/taskqueue.h> + +#include <net/if.h> +#include <net/if_arp.h> +#include <net/ethernet.h> +#include <net/if_dl.h> +#include <net/if_media.h> +#include <net/if_types.h> + +#include <net/bpf.h> + +#include <machine/bus.h> +#include <machine/resource.h> +#include <sys/bus.h> +#include <sys/rman.h> + +#include <dev/mii/mii.h> +#include <dev/mii/miivar.h> + +#include <dev/pci/pcireg.h> +#include <dev/pci/pcivar.h> + +MODULE_DEPEND(xl, pci, 1, 1, 1); +MODULE_DEPEND(xl, ether, 1, 1, 1); +MODULE_DEPEND(xl, miibus, 1, 1, 1); + +/* "device miibus" required. See GENERIC if you get errors here. */ +#include "miibus_if.h" + +#include <dev/xl/if_xlreg.h> + +/* + * TX Checksumming is disabled by default for two reasons: + * - TX Checksumming will occasionally produce corrupt packets + * - TX Checksumming seems to reduce performance + * + * Only 905B/C cards were reported to have this problem, it is possible + * that later chips _may_ be immune. + */ +#define XL905B_TXCSUM_BROKEN 1 + +#ifdef XL905B_TXCSUM_BROKEN +#define XL905B_CSUM_FEATURES 0 +#else +#define XL905B_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP) +#endif + +/* + * Various supported device vendors/types and their names. + */ +static const struct xl_type xl_devs[] = { + { TC_VENDORID, TC_DEVICEID_BOOMERANG_10BT, + "3Com 3c900-TPO Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_BOOMERANG_10BT_COMBO, + "3Com 3c900-COMBO Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_BOOMERANG_10_100BT, + "3Com 3c905-TX Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_BOOMERANG_100BT4, + "3Com 3c905-T4 Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_KRAKATOA_10BT, + "3Com 3c900B-TPO Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_KRAKATOA_10BT_COMBO, + "3Com 3c900B-COMBO Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_KRAKATOA_10BT_TPC, + "3Com 3c900B-TPC Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_CYCLONE_10FL, + "3Com 3c900B-FL Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_HURRICANE_10_100BT, + "3Com 3c905B-TX Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_CYCLONE_10_100BT4, + "3Com 3c905B-T4 Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_CYCLONE_10_100FX, + "3Com 3c905B-FX/SC Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_CYCLONE_10_100_COMBO, + "3Com 3c905B-COMBO Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_TORNADO_10_100BT, + "3Com 3c905C-TX Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_TORNADO_10_100BT_920B, + "3Com 3c920B-EMB Integrated Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_TORNADO_10_100BT_920B_WNM, + "3Com 3c920B-EMB-WNM Integrated Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_HURRICANE_10_100BT_SERV, + "3Com 3c980 Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_TORNADO_10_100BT_SERV, + "3Com 3c980C Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_HURRICANE_SOHO100TX, + "3Com 3cSOHO100-TX OfficeConnect" }, + { TC_VENDORID, TC_DEVICEID_TORNADO_HOMECONNECT, + "3Com 3c450-TX HomeConnect" }, + { TC_VENDORID, TC_DEVICEID_HURRICANE_555, + "3Com 3c555 Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_HURRICANE_556, + "3Com 3c556 Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_HURRICANE_556B, + "3Com 3c556B Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_HURRICANE_575A, + "3Com 3c575TX Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_HURRICANE_575B, + "3Com 3c575B Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_HURRICANE_575C, + "3Com 3c575C Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_HURRICANE_656, + "3Com 3c656 Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_HURRICANE_656B, + "3Com 3c656B Fast Etherlink XL" }, + { TC_VENDORID, TC_DEVICEID_TORNADO_656C, + "3Com 3c656C Fast Etherlink XL" }, + { 0, 0, NULL } +}; + +static int xl_probe(device_t); +static int xl_attach(device_t); +static int xl_detach(device_t); + +static int xl_newbuf(struct xl_softc *, struct xl_chain_onefrag *); +static void xl_stats_update(void *); +static void xl_stats_update_locked(struct xl_softc *); +static int xl_encap(struct xl_softc *, struct xl_chain *, struct mbuf **); +static void xl_rxeof(struct xl_softc *); +static void xl_rxeof_task(void *, int); +static int xl_rx_resync(struct xl_softc *); +static void xl_txeof(struct xl_softc *); +static void xl_txeof_90xB(struct xl_softc *); +static void xl_txeoc(struct xl_softc *); +static void xl_intr(void *); +static void xl_start(struct ifnet *); +static void xl_start_locked(struct ifnet *); +static void xl_start_90xB_locked(struct ifnet *); +static int xl_ioctl(struct ifnet *, u_long, caddr_t); +static void xl_init(void *); +static void xl_init_locked(struct xl_softc *); +static void xl_stop(struct xl_softc *); +static int xl_watchdog(struct xl_softc *); +static int xl_shutdown(device_t); +static int xl_suspend(device_t); +static int xl_resume(device_t); + +#ifdef DEVICE_POLLING +static void xl_poll(struct ifnet *ifp, enum poll_cmd cmd, int count); +static void xl_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count); +#endif + +static int xl_ifmedia_upd(struct ifnet *); +static void xl_ifmedia_sts(struct ifnet *, struct ifmediareq *); + +static int xl_eeprom_wait(struct xl_softc *); +static int xl_read_eeprom(struct xl_softc *, caddr_t, int, int, int); +static void xl_mii_sync(struct xl_softc *); +static void xl_mii_send(struct xl_softc *, u_int32_t, int); +static int xl_mii_readreg(struct xl_softc *, struct xl_mii_frame *); +static int xl_mii_writereg(struct xl_softc *, struct xl_mii_frame *); + +static void xl_setcfg(struct xl_softc *); +static void xl_setmode(struct xl_softc *, int); +static void xl_setmulti(struct xl_softc *); +static void xl_setmulti_hash(struct xl_softc *); +static void xl_reset(struct xl_softc *); +static int xl_list_rx_init(struct xl_softc *); +static int xl_list_tx_init(struct xl_softc *); +static int xl_list_tx_init_90xB(struct xl_softc *); +static void xl_wait(struct xl_softc *); +static void xl_mediacheck(struct xl_softc *); +static void xl_choose_media(struct xl_softc *sc, int *media); +static void xl_choose_xcvr(struct xl_softc *, int); +static void xl_dma_map_addr(void *, bus_dma_segment_t *, int, int); +#ifdef notdef +static void xl_testpacket(struct xl_softc *); +#endif + +static int xl_miibus_readreg(device_t, int, int); +static int xl_miibus_writereg(device_t, int, int, int); +static void xl_miibus_statchg(device_t); +static void xl_miibus_mediainit(device_t); + +static device_method_t xl_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, xl_probe), + DEVMETHOD(device_attach, xl_attach), + DEVMETHOD(device_detach, xl_detach), + DEVMETHOD(device_shutdown, xl_shutdown), + DEVMETHOD(device_suspend, xl_suspend), + DEVMETHOD(device_resume, xl_resume), + + /* bus interface */ + DEVMETHOD(bus_print_child, bus_generic_print_child), + DEVMETHOD(bus_driver_added, bus_generic_driver_added), + + /* MII interface */ + DEVMETHOD(miibus_readreg, xl_miibus_readreg), + DEVMETHOD(miibus_writereg, xl_miibus_writereg), + DEVMETHOD(miibus_statchg, xl_miibus_statchg), + DEVMETHOD(miibus_mediainit, xl_miibus_mediainit), + + { 0, 0 } +}; + +static driver_t xl_driver = { + "xl", + xl_methods, + sizeof(struct xl_softc) +}; + +static devclass_t xl_devclass; + +DRIVER_MODULE(xl, cardbus, xl_driver, xl_devclass, 0, 0); +DRIVER_MODULE(xl, pci, xl_driver, xl_devclass, 0, 0); +DRIVER_MODULE(miibus, xl, miibus_driver, miibus_devclass, 0, 0); + +static void +xl_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) +{ + u_int32_t *paddr; + + paddr = arg; + *paddr = segs->ds_addr; +} + +/* + * Murphy's law says that it's possible the chip can wedge and + * the 'command in progress' bit may never clear. Hence, we wait + * only a finite amount of time to avoid getting caught in an + * infinite loop. Normally this delay routine would be a macro, + * but it isn't called during normal operation so we can afford + * to make it a function. + */ +static void +xl_wait(struct xl_softc *sc) +{ + register int i; + + for (i = 0; i < XL_TIMEOUT; i++) { + if ((CSR_READ_2(sc, XL_STATUS) & XL_STAT_CMDBUSY) == 0) + break; + } + + if (i == XL_TIMEOUT) + device_printf(sc->xl_dev, "command never completed!\n"); +} + +/* + * MII access routines are provided for adapters with external + * PHYs (3c905-TX, 3c905-T4, 3c905B-T4) and those with built-in + * autoneg logic that's faked up to look like a PHY (3c905B-TX). + * Note: if you don't perform the MDIO operations just right, + * it's possible to end up with code that works correctly with + * some chips/CPUs/processor speeds/bus speeds/etc but not + * with others. + */ +#define MII_SET(x) \ + CSR_WRITE_2(sc, XL_W4_PHY_MGMT, \ + CSR_READ_2(sc, XL_W4_PHY_MGMT) | (x)) + +#define MII_CLR(x) \ + CSR_WRITE_2(sc, XL_W4_PHY_MGMT, \ + CSR_READ_2(sc, XL_W4_PHY_MGMT) & ~(x)) + +/* + * Sync the PHYs by setting data bit and strobing the clock 32 times. + */ +static void +xl_mii_sync(struct xl_softc *sc) +{ + register int i; + + XL_SEL_WIN(4); + MII_SET(XL_MII_DIR|XL_MII_DATA); + + for (i = 0; i < 32; i++) { + MII_SET(XL_MII_CLK); + MII_SET(XL_MII_DATA); + MII_SET(XL_MII_DATA); + MII_CLR(XL_MII_CLK); + MII_SET(XL_MII_DATA); + MII_SET(XL_MII_DATA); + } +} + +/* + * Clock a series of bits through the MII. + */ +static void +xl_mii_send(struct xl_softc *sc, u_int32_t bits, int cnt) +{ + int i; + + XL_SEL_WIN(4); + MII_CLR(XL_MII_CLK); + + for (i = (0x1 << (cnt - 1)); i; i >>= 1) { + if (bits & i) { + MII_SET(XL_MII_DATA); + } else { + MII_CLR(XL_MII_DATA); + } + MII_CLR(XL_MII_CLK); + MII_SET(XL_MII_CLK); + } +} + +/* + * Read an PHY register through the MII. + */ +static int +xl_mii_readreg(struct xl_softc *sc, struct xl_mii_frame *frame) +{ + int i, ack; + + /* Set up frame for RX. */ + frame->mii_stdelim = XL_MII_STARTDELIM; + frame->mii_opcode = XL_MII_READOP; + frame->mii_turnaround = 0; + frame->mii_data = 0; + + /* Select register window 4. */ + XL_SEL_WIN(4); + + CSR_WRITE_2(sc, XL_W4_PHY_MGMT, 0); + /* Turn on data xmit. */ + MII_SET(XL_MII_DIR); + + xl_mii_sync(sc); + + /* Send command/address info. */ + xl_mii_send(sc, frame->mii_stdelim, 2); + xl_mii_send(sc, frame->mii_opcode, 2); + xl_mii_send(sc, frame->mii_phyaddr, 5); + xl_mii_send(sc, frame->mii_regaddr, 5); + + /* Idle bit */ + MII_CLR((XL_MII_CLK|XL_MII_DATA)); + MII_SET(XL_MII_CLK); + + /* Turn off xmit. */ + MII_CLR(XL_MII_DIR); + + /* Check for ack */ + MII_CLR(XL_MII_CLK); + ack = CSR_READ_2(sc, XL_W4_PHY_MGMT) & XL_MII_DATA; + MII_SET(XL_MII_CLK); + + /* + * Now try reading data bits. If the ack failed, we still + * need to clock through 16 cycles to keep the PHY(s) in sync. + */ + if (ack) { + for (i = 0; i < 16; i++) { + MII_CLR(XL_MII_CLK); + MII_SET(XL_MII_CLK); + } + goto fail; + } + + for (i = 0x8000; i; i >>= 1) { + MII_CLR(XL_MII_CLK); + if (!ack) { + if (CSR_READ_2(sc, XL_W4_PHY_MGMT) & XL_MII_DATA) + frame->mii_data |= i; + } + MII_SET(XL_MII_CLK); + } + +fail: + MII_CLR(XL_MII_CLK); + MII_SET(XL_MII_CLK); + + return (ack ? 1 : 0); +} + +/* + * Write to a PHY register through the MII. + */ +static int +xl_mii_writereg(struct xl_softc *sc, struct xl_mii_frame *frame) +{ + + /* Set up frame for TX. */ + frame->mii_stdelim = XL_MII_STARTDELIM; + frame->mii_opcode = XL_MII_WRITEOP; + frame->mii_turnaround = XL_MII_TURNAROUND; + + /* Select the window 4. */ + XL_SEL_WIN(4); + + /* Turn on data output. */ + MII_SET(XL_MII_DIR); + + xl_mii_sync(sc); + + xl_mii_send(sc, frame->mii_stdelim, 2); + xl_mii_send(sc, frame->mii_opcode, 2); + xl_mii_send(sc, frame->mii_phyaddr, 5); + xl_mii_send(sc, frame->mii_regaddr, 5); + xl_mii_send(sc, frame->mii_turnaround, 2); + xl_mii_send(sc, frame->mii_data, 16); + + /* Idle bit. */ + MII_SET(XL_MII_CLK); + MII_CLR(XL_MII_CLK); + + /* Turn off xmit. */ + MII_CLR(XL_MII_DIR); + + return (0); +} + +static int +xl_miibus_readreg(device_t dev, int phy, int reg) +{ + struct xl_softc *sc; + struct xl_mii_frame frame; + + sc = device_get_softc(dev); + + /* + * Pretend that PHYs are only available at MII address 24. + * This is to guard against problems with certain 3Com ASIC + * revisions that incorrectly map the internal transceiver + * control registers at all MII addresses. This can cause + * the miibus code to attach the same PHY several times over. + */ + if ((sc->xl_flags & XL_FLAG_PHYOK) == 0 && phy != 24) + return (0); + + bzero((char *)&frame, sizeof(frame)); + frame.mii_phyaddr = phy; + frame.mii_regaddr = reg; + + xl_mii_readreg(sc, &frame); + + return (frame.mii_data); +} + +static int +xl_miibus_writereg(device_t dev, int phy, int reg, int data) +{ + struct xl_softc *sc; + struct xl_mii_frame frame; + + sc = device_get_softc(dev); + + if ((sc->xl_flags & XL_FLAG_PHYOK) == 0 && phy != 24) + return (0); + + bzero((char *)&frame, sizeof(frame)); + frame.mii_phyaddr = phy; + frame.mii_regaddr = reg; + frame.mii_data = data; + + xl_mii_writereg(sc, &frame); + + return (0); +} + +static void +xl_miibus_statchg(device_t dev) +{ + struct xl_softc *sc; + struct mii_data *mii; + + sc = device_get_softc(dev); + mii = device_get_softc(sc->xl_miibus); + + xl_setcfg(sc); + + /* Set ASIC's duplex mode to match the PHY. */ + XL_SEL_WIN(3); + if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) + CSR_WRITE_1(sc, XL_W3_MAC_CTRL, XL_MACCTRL_DUPLEX); + else + CSR_WRITE_1(sc, XL_W3_MAC_CTRL, + (CSR_READ_1(sc, XL_W3_MAC_CTRL) & ~XL_MACCTRL_DUPLEX)); +} + +/* + * Special support for the 3c905B-COMBO. This card has 10/100 support + * plus BNC and AUI ports. This means we will have both an miibus attached + * plus some non-MII media settings. In order to allow this, we have to + * add the extra media to the miibus's ifmedia struct, but we can't do + * that during xl_attach() because the miibus hasn't been attached yet. + * So instead, we wait until the miibus probe/attach is done, at which + * point we will get a callback telling is that it's safe to add our + * extra media. + */ +static void +xl_miibus_mediainit(device_t dev) +{ + struct xl_softc *sc; + struct mii_data *mii; + struct ifmedia *ifm; + + sc = device_get_softc(dev); + mii = device_get_softc(sc->xl_miibus); + ifm = &mii->mii_media; + + if (sc->xl_media & (XL_MEDIAOPT_AUI | XL_MEDIAOPT_10FL)) { + /* + * Check for a 10baseFL board in disguise. + */ + if (sc->xl_type == XL_TYPE_905B && + sc->xl_media == XL_MEDIAOPT_10FL) { + if (bootverbose) + device_printf(sc->xl_dev, "found 10baseFL\n"); + ifmedia_add(ifm, IFM_ETHER | IFM_10_FL, 0, NULL); + ifmedia_add(ifm, IFM_ETHER | IFM_10_FL|IFM_HDX, 0, + NULL); + if (sc->xl_caps & XL_CAPS_FULL_DUPLEX) + ifmedia_add(ifm, + IFM_ETHER | IFM_10_FL | IFM_FDX, 0, NULL); + } else { + if (bootverbose) + device_printf(sc->xl_dev, "found AUI\n"); + ifmedia_add(ifm, IFM_ETHER | IFM_10_5, 0, NULL); + } + } + + if (sc->xl_media & XL_MEDIAOPT_BNC) { + if (bootverbose) + device_printf(sc->xl_dev, "found BNC\n"); + ifmedia_add(ifm, IFM_ETHER | IFM_10_2, 0, NULL); + } +} + +/* + * The EEPROM is slow: give it time to come ready after issuing + * it a command. + */ +static int +xl_eeprom_wait(struct xl_softc *sc) +{ + int i; + + for (i = 0; i < 100; i++) { + if (CSR_READ_2(sc, XL_W0_EE_CMD) & XL_EE_BUSY) + DELAY(162); + else + break; + } + + if (i == 100) { + device_printf(sc->xl_dev, "eeprom failed to come ready\n"); + return (1); + } + + return (0); +} + +/* + * Read a sequence of words from the EEPROM. Note that ethernet address + * data is stored in the EEPROM in network byte order. + */ +static int +xl_read_eeprom(struct xl_softc *sc, caddr_t dest, int off, int cnt, int swap) +{ + int err = 0, i; + u_int16_t word = 0, *ptr; + +#define EEPROM_5BIT_OFFSET(A) ((((A) << 2) & 0x7F00) | ((A) & 0x003F)) +#define EEPROM_8BIT_OFFSET(A) ((A) & 0x003F) + /* + * XXX: WARNING! DANGER! + * It's easy to accidentally overwrite the rom content! + * Note: the 3c575 uses 8bit EEPROM offsets. + */ + XL_SEL_WIN(0); + + if (xl_eeprom_wait(sc)) + return (1); + + if (sc->xl_flags & XL_FLAG_EEPROM_OFFSET_30) + off += 0x30; + + for (i = 0; i < cnt; i++) { + if (sc->xl_flags & XL_FLAG_8BITROM) + CSR_WRITE_2(sc, XL_W0_EE_CMD, + XL_EE_8BIT_READ | EEPROM_8BIT_OFFSET(off + i)); + else + CSR_WRITE_2(sc, XL_W0_EE_CMD, + XL_EE_READ | EEPROM_5BIT_OFFSET(off + i)); + err = xl_eeprom_wait(sc); + if (err) + break; + word = CSR_READ_2(sc, XL_W0_EE_DATA); + ptr = (u_int16_t *)(dest + (i * 2)); + if (swap) + *ptr = ntohs(word); + else + *ptr = word; + } + + return (err ? 1 : 0); +} + +/* + * NICs older than the 3c905B have only one multicast option, which + * is to enable reception of all multicast frames. + */ +static void +xl_setmulti(struct xl_softc *sc) +{ + struct ifnet *ifp = sc->xl_ifp; + struct ifmultiaddr *ifma; + u_int8_t rxfilt; + int mcnt = 0; + + XL_LOCK_ASSERT(sc); + + XL_SEL_WIN(5); + rxfilt = CSR_READ_1(sc, XL_W5_RX_FILTER); + + if (ifp->if_flags & IFF_ALLMULTI) { + rxfilt |= XL_RXFILTER_ALLMULTI; + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_FILT|rxfilt); + return; + } + + IF_ADDR_LOCK(ifp); + TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) + mcnt++; + IF_ADDR_UNLOCK(ifp); + + if (mcnt) + rxfilt |= XL_RXFILTER_ALLMULTI; + else + rxfilt &= ~XL_RXFILTER_ALLMULTI; + + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_FILT|rxfilt); +} + +/* + * 3c905B adapters have a hash filter that we can program. + */ +static void +xl_setmulti_hash(struct xl_softc *sc) +{ + struct ifnet *ifp = sc->xl_ifp; + int h = 0, i; + struct ifmultiaddr *ifma; + u_int8_t rxfilt; + int mcnt = 0; + + XL_LOCK_ASSERT(sc); + + XL_SEL_WIN(5); + rxfilt = CSR_READ_1(sc, XL_W5_RX_FILTER); + + if (ifp->if_flags & IFF_ALLMULTI) { + rxfilt |= XL_RXFILTER_ALLMULTI; + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_FILT|rxfilt); + return; + } else + rxfilt &= ~XL_RXFILTER_ALLMULTI; + + /* first, zot all the existing hash bits */ + for (i = 0; i < XL_HASHFILT_SIZE; i++) + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_HASH|i); + + /* now program new ones */ + IF_ADDR_LOCK(ifp); + TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { + if (ifma->ifma_addr->sa_family != AF_LINK) + continue; + /* + * Note: the 3c905B currently only supports a 64-bit hash + * table, which means we really only need 6 bits, but the + * manual indicates that future chip revisions will have a + * 256-bit hash table, hence the routine is set up to + * calculate 8 bits of position info in case we need it some + * day. + * Note II, The Sequel: _CURRENT_ versions of the 3c905B have + * a 256 bit hash table. This means we have to use all 8 bits + * regardless. On older cards, the upper 2 bits will be + * ignored. Grrrr.... + */ + h = ether_crc32_be(LLADDR((struct sockaddr_dl *) + ifma->ifma_addr), ETHER_ADDR_LEN) & 0xFF; + CSR_WRITE_2(sc, XL_COMMAND, + h | XL_CMD_RX_SET_HASH | XL_HASH_SET); + mcnt++; + } + IF_ADDR_UNLOCK(ifp); + + if (mcnt) + rxfilt |= XL_RXFILTER_MULTIHASH; + else + rxfilt &= ~XL_RXFILTER_MULTIHASH; + + CSR_WRITE_2(sc, XL_COMMAND, rxfilt | XL_CMD_RX_SET_FILT); +} + +#ifdef notdef +static void +xl_testpacket(struct xl_softc *sc) +{ + struct mbuf *m; + struct ifnet *ifp = sc->xl_ifp; + + MGETHDR(m, M_DONTWAIT, MT_DATA); + + if (m == NULL) + return; + + bcopy(IF_LLADDR(sc->xl_ifp), + mtod(m, struct ether_header *)->ether_dhost, ETHER_ADDR_LEN); + bcopy(IF_LLADDR(sc->xl_ifp), + mtod(m, struct ether_header *)->ether_shost, ETHER_ADDR_LEN); + mtod(m, struct ether_header *)->ether_type = htons(3); + mtod(m, unsigned char *)[14] = 0; + mtod(m, unsigned char *)[15] = 0; + mtod(m, unsigned char *)[16] = 0xE3; + m->m_len = m->m_pkthdr.len = sizeof(struct ether_header) + 3; + IFQ_ENQUEUE(&ifp->if_snd, m); + xl_start(ifp); +} +#endif + +static void +xl_setcfg(struct xl_softc *sc) +{ + u_int32_t icfg; + + /*XL_LOCK_ASSERT(sc);*/ + + XL_SEL_WIN(3); + icfg = CSR_READ_4(sc, XL_W3_INTERNAL_CFG); + icfg &= ~XL_ICFG_CONNECTOR_MASK; + if (sc->xl_media & XL_MEDIAOPT_MII || + sc->xl_media & XL_MEDIAOPT_BT4) + icfg |= (XL_XCVR_MII << XL_ICFG_CONNECTOR_BITS); + if (sc->xl_media & XL_MEDIAOPT_BTX) + icfg |= (XL_XCVR_AUTO << XL_ICFG_CONNECTOR_BITS); + + CSR_WRITE_4(sc, XL_W3_INTERNAL_CFG, icfg); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_STOP); +} + +static void +xl_setmode(struct xl_softc *sc, int media) +{ + u_int32_t icfg; + u_int16_t mediastat; + char *pmsg = "", *dmsg = ""; + + XL_LOCK_ASSERT(sc); + + XL_SEL_WIN(4); + mediastat = CSR_READ_2(sc, XL_W4_MEDIA_STATUS); + XL_SEL_WIN(3); + icfg = CSR_READ_4(sc, XL_W3_INTERNAL_CFG); + + if (sc->xl_media & XL_MEDIAOPT_BT) { + if (IFM_SUBTYPE(media) == IFM_10_T) { + pmsg = "10baseT transceiver"; + sc->xl_xcvr = XL_XCVR_10BT; + icfg &= ~XL_ICFG_CONNECTOR_MASK; + icfg |= (XL_XCVR_10BT << XL_ICFG_CONNECTOR_BITS); + mediastat |= XL_MEDIASTAT_LINKBEAT | + XL_MEDIASTAT_JABGUARD; + mediastat &= ~XL_MEDIASTAT_SQEENB; + } + } + + if (sc->xl_media & XL_MEDIAOPT_BFX) { + if (IFM_SUBTYPE(media) == IFM_100_FX) { + pmsg = "100baseFX port"; + sc->xl_xcvr = XL_XCVR_100BFX; + icfg &= ~XL_ICFG_CONNECTOR_MASK; + icfg |= (XL_XCVR_100BFX << XL_ICFG_CONNECTOR_BITS); + mediastat |= XL_MEDIASTAT_LINKBEAT; + mediastat &= ~XL_MEDIASTAT_SQEENB; + } + } + + if (sc->xl_media & (XL_MEDIAOPT_AUI|XL_MEDIAOPT_10FL)) { + if (IFM_SUBTYPE(media) == IFM_10_5) { + pmsg = "AUI port"; + sc->xl_xcvr = XL_XCVR_AUI; + icfg &= ~XL_ICFG_CONNECTOR_MASK; + icfg |= (XL_XCVR_AUI << XL_ICFG_CONNECTOR_BITS); + mediastat &= ~(XL_MEDIASTAT_LINKBEAT | + XL_MEDIASTAT_JABGUARD); + mediastat |= ~XL_MEDIASTAT_SQEENB; + } + if (IFM_SUBTYPE(media) == IFM_10_FL) { + pmsg = "10baseFL transceiver"; + sc->xl_xcvr = XL_XCVR_AUI; + icfg &= ~XL_ICFG_CONNECTOR_MASK; + icfg |= (XL_XCVR_AUI << XL_ICFG_CONNECTOR_BITS); + mediastat &= ~(XL_MEDIASTAT_LINKBEAT | + XL_MEDIASTAT_JABGUARD); + mediastat |= ~XL_MEDIASTAT_SQEENB; + } + } + + if (sc->xl_media & XL_MEDIAOPT_BNC) { + if (IFM_SUBTYPE(media) == IFM_10_2) { + pmsg = "AUI port"; + sc->xl_xcvr = XL_XCVR_COAX; + icfg &= ~XL_ICFG_CONNECTOR_MASK; + icfg |= (XL_XCVR_COAX << XL_ICFG_CONNECTOR_BITS); + mediastat &= ~(XL_MEDIASTAT_LINKBEAT | + XL_MEDIASTAT_JABGUARD | XL_MEDIASTAT_SQEENB); + } + } + + if ((media & IFM_GMASK) == IFM_FDX || + IFM_SUBTYPE(media) == IFM_100_FX) { + dmsg = "full"; + XL_SEL_WIN(3); + CSR_WRITE_1(sc, XL_W3_MAC_CTRL, XL_MACCTRL_DUPLEX); + } else { + dmsg = "half"; + XL_SEL_WIN(3); + CSR_WRITE_1(sc, XL_W3_MAC_CTRL, + (CSR_READ_1(sc, XL_W3_MAC_CTRL) & ~XL_MACCTRL_DUPLEX)); + } + + if (IFM_SUBTYPE(media) == IFM_10_2) + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_START); + else + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_STOP); + + CSR_WRITE_4(sc, XL_W3_INTERNAL_CFG, icfg); + XL_SEL_WIN(4); + CSR_WRITE_2(sc, XL_W4_MEDIA_STATUS, mediastat); + + DELAY(800); + XL_SEL_WIN(7); + + device_printf(sc->xl_dev, "selecting %s, %s duplex\n", pmsg, dmsg); +} + +static void +xl_reset(struct xl_softc *sc) +{ + register int i; + + XL_LOCK_ASSERT(sc); + + XL_SEL_WIN(0); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RESET | + ((sc->xl_flags & XL_FLAG_WEIRDRESET) ? + XL_RESETOPT_DISADVFD:0)); + + /* + * If we're using memory mapped register mode, pause briefly + * after issuing the reset command before trying to access any + * other registers. With my 3c575C cardbus card, failing to do + * this results in the system locking up while trying to poll + * the command busy bit in the status register. + */ + if (sc->xl_flags & XL_FLAG_USE_MMIO) + DELAY(100000); + + for (i = 0; i < XL_TIMEOUT; i++) { + DELAY(10); + if (!(CSR_READ_2(sc, XL_STATUS) & XL_STAT_CMDBUSY)) + break; + } + + if (i == XL_TIMEOUT) + device_printf(sc->xl_dev, "reset didn't complete\n"); + + /* Reset TX and RX. */ + /* Note: the RX reset takes an absurd amount of time + * on newer versions of the Tornado chips such as those + * on the 3c905CX and newer 3c908C cards. We wait an + * extra amount of time so that xl_wait() doesn't complain + * and annoy the users. + */ + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_RESET); + DELAY(100000); + xl_wait(sc); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_RESET); + xl_wait(sc); + + if (sc->xl_flags & XL_FLAG_INVERT_LED_PWR || + sc->xl_flags & XL_FLAG_INVERT_MII_PWR) { + XL_SEL_WIN(2); + CSR_WRITE_2(sc, XL_W2_RESET_OPTIONS, + CSR_READ_2(sc, XL_W2_RESET_OPTIONS) | + ((sc->xl_flags & XL_FLAG_INVERT_LED_PWR) ? + XL_RESETOPT_INVERT_LED : 0) | + ((sc->xl_flags & XL_FLAG_INVERT_MII_PWR) ? + XL_RESETOPT_INVERT_MII : 0)); + } + + /* Wait a little while for the chip to get its brains in order. */ + DELAY(100000); +} + +/* + * Probe for a 3Com Etherlink XL chip. Check the PCI vendor and device + * IDs against our list and return a device name if we find a match. + */ +static int +xl_probe(device_t dev) +{ + const struct xl_type *t; + + t = xl_devs; + + while (t->xl_name != NULL) { + if ((pci_get_vendor(dev) == t->xl_vid) && + (pci_get_device(dev) == t->xl_did)) { + device_set_desc(dev, t->xl_name); + return (BUS_PROBE_DEFAULT); + } + t++; + } + + return (ENXIO); +} + +/* + * This routine is a kludge to work around possible hardware faults + * or manufacturing defects that can cause the media options register + * (or reset options register, as it's called for the first generation + * 3c90x adapters) to return an incorrect result. I have encountered + * one Dell Latitude laptop docking station with an integrated 3c905-TX + * which doesn't have any of the 'mediaopt' bits set. This screws up + * the attach routine pretty badly because it doesn't know what media + * to look for. If we find ourselves in this predicament, this routine + * will try to guess the media options values and warn the user of a + * possible manufacturing defect with his adapter/system/whatever. + */ +static void +xl_mediacheck(struct xl_softc *sc) +{ + + /* + * If some of the media options bits are set, assume they are + * correct. If not, try to figure it out down below. + * XXX I should check for 10baseFL, but I don't have an adapter + * to test with. + */ + if (sc->xl_media & (XL_MEDIAOPT_MASK & ~XL_MEDIAOPT_VCO)) { + /* + * Check the XCVR value. If it's not in the normal range + * of values, we need to fake it up here. + */ + if (sc->xl_xcvr <= XL_XCVR_AUTO) + return; + else { + device_printf(sc->xl_dev, + "bogus xcvr value in EEPROM (%x)\n", sc->xl_xcvr); + device_printf(sc->xl_dev, + "choosing new default based on card type\n"); + } + } else { + if (sc->xl_type == XL_TYPE_905B && + sc->xl_media & XL_MEDIAOPT_10FL) + return; + device_printf(sc->xl_dev, +"WARNING: no media options bits set in the media options register!!\n"); + device_printf(sc->xl_dev, +"this could be a manufacturing defect in your adapter or system\n"); + device_printf(sc->xl_dev, +"attempting to guess media type; you should probably consult your vendor\n"); + } + + xl_choose_xcvr(sc, 1); +} + +static void +xl_choose_xcvr(struct xl_softc *sc, int verbose) +{ + u_int16_t devid; + + /* + * Read the device ID from the EEPROM. + * This is what's loaded into the PCI device ID register, so it has + * to be correct otherwise we wouldn't have gotten this far. + */ + xl_read_eeprom(sc, (caddr_t)&devid, XL_EE_PRODID, 1, 0); + + switch (devid) { + case TC_DEVICEID_BOOMERANG_10BT: /* 3c900-TPO */ + case TC_DEVICEID_KRAKATOA_10BT: /* 3c900B-TPO */ + sc->xl_media = XL_MEDIAOPT_BT; + sc->xl_xcvr = XL_XCVR_10BT; + if (verbose) + device_printf(sc->xl_dev, + "guessing 10BaseT transceiver\n"); + break; + case TC_DEVICEID_BOOMERANG_10BT_COMBO: /* 3c900-COMBO */ + case TC_DEVICEID_KRAKATOA_10BT_COMBO: /* 3c900B-COMBO */ + sc->xl_media = XL_MEDIAOPT_BT|XL_MEDIAOPT_BNC|XL_MEDIAOPT_AUI; + sc->xl_xcvr = XL_XCVR_10BT; + if (verbose) + device_printf(sc->xl_dev, + "guessing COMBO (AUI/BNC/TP)\n"); + break; + case TC_DEVICEID_KRAKATOA_10BT_TPC: /* 3c900B-TPC */ + sc->xl_media = XL_MEDIAOPT_BT|XL_MEDIAOPT_BNC; + sc->xl_xcvr = XL_XCVR_10BT; + if (verbose) + device_printf(sc->xl_dev, "guessing TPC (BNC/TP)\n"); + break; + case TC_DEVICEID_CYCLONE_10FL: /* 3c900B-FL */ + sc->xl_media = XL_MEDIAOPT_10FL; + sc->xl_xcvr = XL_XCVR_AUI; + if (verbose) + device_printf(sc->xl_dev, "guessing 10baseFL\n"); + break; + case TC_DEVICEID_BOOMERANG_10_100BT: /* 3c905-TX */ + case TC_DEVICEID_HURRICANE_555: /* 3c555 */ + case TC_DEVICEID_HURRICANE_556: /* 3c556 */ + case TC_DEVICEID_HURRICANE_556B: /* 3c556B */ + case TC_DEVICEID_HURRICANE_575A: /* 3c575TX */ + case TC_DEVICEID_HURRICANE_575B: /* 3c575B */ + case TC_DEVICEID_HURRICANE_575C: /* 3c575C */ + case TC_DEVICEID_HURRICANE_656: /* 3c656 */ + case TC_DEVICEID_HURRICANE_656B: /* 3c656B */ + case TC_DEVICEID_TORNADO_656C: /* 3c656C */ + case TC_DEVICEID_TORNADO_10_100BT_920B: /* 3c920B-EMB */ + case TC_DEVICEID_TORNADO_10_100BT_920B_WNM: /* 3c920B-EMB-WNM */ + sc->xl_media = XL_MEDIAOPT_MII; + sc->xl_xcvr = XL_XCVR_MII; + if (verbose) + device_printf(sc->xl_dev, "guessing MII\n"); + break; + case TC_DEVICEID_BOOMERANG_100BT4: /* 3c905-T4 */ + case TC_DEVICEID_CYCLONE_10_100BT4: /* 3c905B-T4 */ + sc->xl_media = XL_MEDIAOPT_BT4; + sc->xl_xcvr = XL_XCVR_MII; + if (verbose) + device_printf(sc->xl_dev, "guessing 100baseT4/MII\n"); + break; + case TC_DEVICEID_HURRICANE_10_100BT: /* 3c905B-TX */ + case TC_DEVICEID_HURRICANE_10_100BT_SERV:/*3c980-TX */ + case TC_DEVICEID_TORNADO_10_100BT_SERV: /* 3c980C-TX */ + case TC_DEVICEID_HURRICANE_SOHO100TX: /* 3cSOHO100-TX */ + case TC_DEVICEID_TORNADO_10_100BT: /* 3c905C-TX */ + case TC_DEVICEID_TORNADO_HOMECONNECT: /* 3c450-TX */ + sc->xl_media = XL_MEDIAOPT_BTX; + sc->xl_xcvr = XL_XCVR_AUTO; + if (verbose) + device_printf(sc->xl_dev, "guessing 10/100 internal\n"); + break; + case TC_DEVICEID_CYCLONE_10_100_COMBO: /* 3c905B-COMBO */ + sc->xl_media = XL_MEDIAOPT_BTX|XL_MEDIAOPT_BNC|XL_MEDIAOPT_AUI; + sc->xl_xcvr = XL_XCVR_AUTO; + if (verbose) + device_printf(sc->xl_dev, + "guessing 10/100 plus BNC/AUI\n"); + break; + default: + device_printf(sc->xl_dev, + "unknown device ID: %x -- defaulting to 10baseT\n", devid); + sc->xl_media = XL_MEDIAOPT_BT; + break; + } +} + +/* + * Attach the interface. Allocate softc structures, do ifmedia + * setup and ethernet/BPF attach. + */ +static int +xl_attach(device_t dev) +{ + u_char eaddr[ETHER_ADDR_LEN]; + u_int16_t xcvr[2]; + struct xl_softc *sc; + struct ifnet *ifp; + int media; + int unit, error = 0, rid, res; + uint16_t did; + + sc = device_get_softc(dev); + sc->xl_dev = dev; + + unit = device_get_unit(dev); + + mtx_init(&sc->xl_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, + MTX_DEF); + ifmedia_init(&sc->ifmedia, 0, xl_ifmedia_upd, xl_ifmedia_sts); + + did = pci_get_device(dev); + + sc->xl_flags = 0; + if (did == TC_DEVICEID_HURRICANE_555) + sc->xl_flags |= XL_FLAG_EEPROM_OFFSET_30 | XL_FLAG_PHYOK; + if (did == TC_DEVICEID_HURRICANE_556 || + did == TC_DEVICEID_HURRICANE_556B) + sc->xl_flags |= XL_FLAG_FUNCREG | XL_FLAG_PHYOK | + XL_FLAG_EEPROM_OFFSET_30 | XL_FLAG_WEIRDRESET | + XL_FLAG_INVERT_LED_PWR | XL_FLAG_INVERT_MII_PWR; + if (did == TC_DEVICEID_HURRICANE_555 || + did == TC_DEVICEID_HURRICANE_556) + sc->xl_flags |= XL_FLAG_8BITROM; + if (did == TC_DEVICEID_HURRICANE_556B) + sc->xl_flags |= XL_FLAG_NO_XCVR_PWR; + + if (did == TC_DEVICEID_HURRICANE_575B || + did == TC_DEVICEID_HURRICANE_575C || + did == TC_DEVICEID_HURRICANE_656B || + did == TC_DEVICEID_TORNADO_656C) + sc->xl_flags |= XL_FLAG_FUNCREG; + if (did == TC_DEVICEID_HURRICANE_575A || + did == TC_DEVICEID_HURRICANE_575B || + did == TC_DEVICEID_HURRICANE_575C || + did == TC_DEVICEID_HURRICANE_656B || + did == TC_DEVICEID_TORNADO_656C) + sc->xl_flags |= XL_FLAG_PHYOK | XL_FLAG_EEPROM_OFFSET_30 | + XL_FLAG_8BITROM; + if (did == TC_DEVICEID_HURRICANE_656) + sc->xl_flags |= XL_FLAG_FUNCREG | XL_FLAG_PHYOK; + if (did == TC_DEVICEID_HURRICANE_575B) + sc->xl_flags |= XL_FLAG_INVERT_LED_PWR; + if (did == TC_DEVICEID_HURRICANE_575C) + sc->xl_flags |= XL_FLAG_INVERT_MII_PWR; + if (did == TC_DEVICEID_TORNADO_656C) + sc->xl_flags |= XL_FLAG_INVERT_MII_PWR; + if (did == TC_DEVICEID_HURRICANE_656 || + did == TC_DEVICEID_HURRICANE_656B) + sc->xl_flags |= XL_FLAG_INVERT_MII_PWR | + XL_FLAG_INVERT_LED_PWR; + if (did == TC_DEVICEID_TORNADO_10_100BT_920B || + did == TC_DEVICEID_TORNADO_10_100BT_920B_WNM) + sc->xl_flags |= XL_FLAG_PHYOK; + + switch (did) { + case TC_DEVICEID_BOOMERANG_10_100BT: /* 3c905-TX */ + case TC_DEVICEID_HURRICANE_575A: + case TC_DEVICEID_HURRICANE_575B: + case TC_DEVICEID_HURRICANE_575C: + sc->xl_flags |= XL_FLAG_NO_MMIO; + break; + default: + break; + } + + /* + * Map control/status registers. + */ + pci_enable_busmaster(dev); + + if ((sc->xl_flags & XL_FLAG_NO_MMIO) == 0) { + rid = XL_PCI_LOMEM; + res = SYS_RES_MEMORY; + + sc->xl_res = bus_alloc_resource_any(dev, res, &rid, RF_ACTIVE); + } + + if (sc->xl_res != NULL) { + sc->xl_flags |= XL_FLAG_USE_MMIO; + if (bootverbose) + device_printf(dev, "using memory mapped I/O\n"); + } else { + rid = XL_PCI_LOIO; + res = SYS_RES_IOPORT; + sc->xl_res = bus_alloc_resource_any(dev, res, &rid, RF_ACTIVE); + if (sc->xl_res == NULL) { + device_printf(dev, "couldn't map ports/memory\n"); + error = ENXIO; + goto fail; + } + if (bootverbose) + device_printf(dev, "using port I/O\n"); + } + + sc->xl_btag = rman_get_bustag(sc->xl_res); + sc->xl_bhandle = rman_get_bushandle(sc->xl_res); + + if (sc->xl_flags & XL_FLAG_FUNCREG) { + rid = XL_PCI_FUNCMEM; + sc->xl_fres = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, + RF_ACTIVE); + + if (sc->xl_fres == NULL) { + device_printf(dev, "couldn't map funcreg memory\n"); + error = ENXIO; + goto fail; + } + + sc->xl_ftag = rman_get_bustag(sc->xl_fres); + sc->xl_fhandle = rman_get_bushandle(sc->xl_fres); + } + + /* Allocate interrupt */ + rid = 0; + sc->xl_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, + RF_SHAREABLE | RF_ACTIVE); + if (sc->xl_irq == NULL) { + device_printf(dev, "couldn't map interrupt\n"); + error = ENXIO; + goto fail; + } + + /* Initialize interface name. */ + ifp = sc->xl_ifp = if_alloc(IFT_ETHER); + if (ifp == NULL) { + device_printf(dev, "can not if_alloc()\n"); + error = ENOSPC; + goto fail; + } + ifp->if_softc = sc; + if_initname(ifp, device_get_name(dev), device_get_unit(dev)); + + /* Reset the adapter. */ + XL_LOCK(sc); + xl_reset(sc); + XL_UNLOCK(sc); + + /* + * Get station address from the EEPROM. + */ + if (xl_read_eeprom(sc, (caddr_t)&eaddr, XL_EE_OEM_ADR0, 3, 1)) { + device_printf(dev, "failed to read station address\n"); + error = ENXIO; + goto fail; + } + + callout_init_mtx(&sc->xl_stat_callout, &sc->xl_mtx, 0); + TASK_INIT(&sc->xl_task, 0, xl_rxeof_task, sc); + + /* + * Now allocate a tag for the DMA descriptor lists and a chunk + * of DMA-able memory based on the tag. Also obtain the DMA + * addresses of the RX and TX ring, which we'll need later. + * All of our lists are allocated as a contiguous block + * of memory. + */ + error = bus_dma_tag_create(bus_get_dma_tag(dev), 8, 0, + BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, + XL_RX_LIST_SZ, 1, XL_RX_LIST_SZ, 0, NULL, NULL, + &sc->xl_ldata.xl_rx_tag); + if (error) { + device_printf(dev, "failed to allocate rx dma tag\n"); + goto fail; + } + + error = bus_dmamem_alloc(sc->xl_ldata.xl_rx_tag, + (void **)&sc->xl_ldata.xl_rx_list, BUS_DMA_NOWAIT | BUS_DMA_ZERO, + &sc->xl_ldata.xl_rx_dmamap); + if (error) { + device_printf(dev, "no memory for rx list buffers!\n"); + bus_dma_tag_destroy(sc->xl_ldata.xl_rx_tag); + sc->xl_ldata.xl_rx_tag = NULL; + goto fail; + } + + error = bus_dmamap_load(sc->xl_ldata.xl_rx_tag, + sc->xl_ldata.xl_rx_dmamap, sc->xl_ldata.xl_rx_list, + XL_RX_LIST_SZ, xl_dma_map_addr, + &sc->xl_ldata.xl_rx_dmaaddr, BUS_DMA_NOWAIT); + if (error) { + device_printf(dev, "cannot get dma address of the rx ring!\n"); + bus_dmamem_free(sc->xl_ldata.xl_rx_tag, sc->xl_ldata.xl_rx_list, + sc->xl_ldata.xl_rx_dmamap); + bus_dma_tag_destroy(sc->xl_ldata.xl_rx_tag); + sc->xl_ldata.xl_rx_tag = NULL; + goto fail; + } + + error = bus_dma_tag_create(bus_get_dma_tag(dev), 8, 0, + BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, + XL_TX_LIST_SZ, 1, XL_TX_LIST_SZ, 0, NULL, NULL, + &sc->xl_ldata.xl_tx_tag); + if (error) { + device_printf(dev, "failed to allocate tx dma tag\n"); + goto fail; + } + + error = bus_dmamem_alloc(sc->xl_ldata.xl_tx_tag, + (void **)&sc->xl_ldata.xl_tx_list, BUS_DMA_NOWAIT | BUS_DMA_ZERO, + &sc->xl_ldata.xl_tx_dmamap); + if (error) { + device_printf(dev, "no memory for list buffers!\n"); + bus_dma_tag_destroy(sc->xl_ldata.xl_tx_tag); + sc->xl_ldata.xl_tx_tag = NULL; + goto fail; + } + + error = bus_dmamap_load(sc->xl_ldata.xl_tx_tag, + sc->xl_ldata.xl_tx_dmamap, sc->xl_ldata.xl_tx_list, + XL_TX_LIST_SZ, xl_dma_map_addr, + &sc->xl_ldata.xl_tx_dmaaddr, BUS_DMA_NOWAIT); + if (error) { + device_printf(dev, "cannot get dma address of the tx ring!\n"); + bus_dmamem_free(sc->xl_ldata.xl_tx_tag, sc->xl_ldata.xl_tx_list, + sc->xl_ldata.xl_tx_dmamap); + bus_dma_tag_destroy(sc->xl_ldata.xl_tx_tag); + sc->xl_ldata.xl_tx_tag = NULL; + goto fail; + } + + /* + * Allocate a DMA tag for the mapping of mbufs. + */ + error = bus_dma_tag_create(bus_get_dma_tag(dev), 1, 0, + BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, + MCLBYTES * XL_MAXFRAGS, XL_MAXFRAGS, MCLBYTES, 0, NULL, + NULL, &sc->xl_mtag); + if (error) { + device_printf(dev, "failed to allocate mbuf dma tag\n"); + goto fail; + } + + /* We need a spare DMA map for the RX ring. */ + error = bus_dmamap_create(sc->xl_mtag, 0, &sc->xl_tmpmap); + if (error) + goto fail; + + /* + * Figure out the card type. 3c905B adapters have the + * 'supportsNoTxLength' bit set in the capabilities + * word in the EEPROM. + * Note: my 3c575C cardbus card lies. It returns a value + * of 0x1578 for its capabilities word, which is somewhat + * nonsensical. Another way to distinguish a 3c90x chip + * from a 3c90xB/C chip is to check for the 'supportsLargePackets' + * bit. This will only be set for 3c90x boomerage chips. + */ + xl_read_eeprom(sc, (caddr_t)&sc->xl_caps, XL_EE_CAPS, 1, 0); + if (sc->xl_caps & XL_CAPS_NO_TXLENGTH || + !(sc->xl_caps & XL_CAPS_LARGE_PKTS)) + sc->xl_type = XL_TYPE_905B; + else + sc->xl_type = XL_TYPE_90X; + + /* Set the TX start threshold for best performance. */ + sc->xl_tx_thresh = XL_MIN_FRAMELEN; + + ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; + ifp->if_ioctl = xl_ioctl; + ifp->if_capabilities = IFCAP_VLAN_MTU; + if (sc->xl_type == XL_TYPE_905B) { + ifp->if_hwassist = XL905B_CSUM_FEATURES; +#ifdef XL905B_TXCSUM_BROKEN + ifp->if_capabilities |= IFCAP_RXCSUM; +#else + ifp->if_capabilities |= IFCAP_HWCSUM; +#endif + } + ifp->if_capenable = ifp->if_capabilities; +#ifdef DEVICE_POLLING + ifp->if_capabilities |= IFCAP_POLLING; +#endif + ifp->if_start = xl_start; + ifp->if_init = xl_init; + IFQ_SET_MAXLEN(&ifp->if_snd, XL_TX_LIST_CNT - 1); + ifp->if_snd.ifq_drv_maxlen = XL_TX_LIST_CNT - 1; + IFQ_SET_READY(&ifp->if_snd); + + /* + * Now we have to see what sort of media we have. + * This includes probing for an MII interace and a + * possible PHY. + */ + XL_SEL_WIN(3); + sc->xl_media = CSR_READ_2(sc, XL_W3_MEDIA_OPT); + if (bootverbose) + device_printf(dev, "media options word: %x\n", sc->xl_media); + + xl_read_eeprom(sc, (char *)&xcvr, XL_EE_ICFG_0, 2, 0); + sc->xl_xcvr = xcvr[0] | xcvr[1] << 16; + sc->xl_xcvr &= XL_ICFG_CONNECTOR_MASK; + sc->xl_xcvr >>= XL_ICFG_CONNECTOR_BITS; + + xl_mediacheck(sc); + + if (sc->xl_media & XL_MEDIAOPT_MII || + sc->xl_media & XL_MEDIAOPT_BTX || + sc->xl_media & XL_MEDIAOPT_BT4) { + if (bootverbose) + device_printf(dev, "found MII/AUTO\n"); + xl_setcfg(sc); + if (mii_phy_probe(dev, &sc->xl_miibus, + xl_ifmedia_upd, xl_ifmedia_sts)) { + device_printf(dev, "no PHY found!\n"); + error = ENXIO; + goto fail; + } + goto done; + } + + /* + * Sanity check. If the user has selected "auto" and this isn't + * a 10/100 card of some kind, we need to force the transceiver + * type to something sane. + */ + if (sc->xl_xcvr == XL_XCVR_AUTO) + xl_choose_xcvr(sc, bootverbose); + + /* + * Do ifmedia setup. + */ + if (sc->xl_media & XL_MEDIAOPT_BT) { + if (bootverbose) + device_printf(dev, "found 10baseT\n"); + ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T, 0, NULL); + ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL); + if (sc->xl_caps & XL_CAPS_FULL_DUPLEX) + ifmedia_add(&sc->ifmedia, + IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL); + } + + if (sc->xl_media & (XL_MEDIAOPT_AUI|XL_MEDIAOPT_10FL)) { + /* + * Check for a 10baseFL board in disguise. + */ + if (sc->xl_type == XL_TYPE_905B && + sc->xl_media == XL_MEDIAOPT_10FL) { + if (bootverbose) + device_printf(dev, "found 10baseFL\n"); + ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_FL, 0, NULL); + ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_FL|IFM_HDX, + 0, NULL); + if (sc->xl_caps & XL_CAPS_FULL_DUPLEX) + ifmedia_add(&sc->ifmedia, + IFM_ETHER|IFM_10_FL|IFM_FDX, 0, NULL); + } else { + if (bootverbose) + device_printf(dev, "found AUI\n"); + ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_5, 0, NULL); + } + } + + if (sc->xl_media & XL_MEDIAOPT_BNC) { + if (bootverbose) + device_printf(dev, "found BNC\n"); + ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_2, 0, NULL); + } + + if (sc->xl_media & XL_MEDIAOPT_BFX) { + if (bootverbose) + device_printf(dev, "found 100baseFX\n"); + ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_FX, 0, NULL); + } + + media = IFM_ETHER|IFM_100_TX|IFM_FDX; + xl_choose_media(sc, &media); + + if (sc->xl_miibus == NULL) + ifmedia_set(&sc->ifmedia, media); + +done: + if (sc->xl_flags & XL_FLAG_NO_XCVR_PWR) { + XL_SEL_WIN(0); + CSR_WRITE_2(sc, XL_W0_MFG_ID, XL_NO_XCVR_PWR_MAGICBITS); + } + + /* + * Call MI attach routine. + */ + ether_ifattach(ifp, eaddr); + + error = bus_setup_intr(dev, sc->xl_irq, INTR_TYPE_NET | INTR_MPSAFE, + NULL, xl_intr, sc, &sc->xl_intrhand); + if (error) { + device_printf(dev, "couldn't set up irq\n"); + ether_ifdetach(ifp); + goto fail; + } + +fail: + if (error) + xl_detach(dev); + + return (error); +} + +/* + * Choose a default media. + * XXX This is a leaf function only called by xl_attach() and + * acquires/releases the non-recursible driver mutex to + * satisfy lock assertions. + */ +static void +xl_choose_media(struct xl_softc *sc, int *media) +{ + + XL_LOCK(sc); + + switch (sc->xl_xcvr) { + case XL_XCVR_10BT: + *media = IFM_ETHER|IFM_10_T; + xl_setmode(sc, *media); + break; + case XL_XCVR_AUI: + if (sc->xl_type == XL_TYPE_905B && + sc->xl_media == XL_MEDIAOPT_10FL) { + *media = IFM_ETHER|IFM_10_FL; + xl_setmode(sc, *media); + } else { + *media = IFM_ETHER|IFM_10_5; + xl_setmode(sc, *media); + } + break; + case XL_XCVR_COAX: + *media = IFM_ETHER|IFM_10_2; + xl_setmode(sc, *media); + break; + case XL_XCVR_AUTO: + case XL_XCVR_100BTX: + case XL_XCVR_MII: + /* Chosen by miibus */ + break; + case XL_XCVR_100BFX: + *media = IFM_ETHER|IFM_100_FX; + break; + default: + device_printf(sc->xl_dev, "unknown XCVR type: %d\n", + sc->xl_xcvr); + /* + * This will probably be wrong, but it prevents + * the ifmedia code from panicking. + */ + *media = IFM_ETHER|IFM_10_T; + break; + } + + XL_UNLOCK(sc); +} + +/* + * Shutdown hardware and free up resources. This can be called any + * time after the mutex has been initialized. It is called in both + * the error case in attach and the normal detach case so it needs + * to be careful about only freeing resources that have actually been + * allocated. + */ +static int +xl_detach(device_t dev) +{ + struct xl_softc *sc; + struct ifnet *ifp; + int rid, res; + + sc = device_get_softc(dev); + ifp = sc->xl_ifp; + + KASSERT(mtx_initialized(&sc->xl_mtx), ("xl mutex not initialized")); + +#ifdef DEVICE_POLLING + if (ifp && ifp->if_capenable & IFCAP_POLLING) + ether_poll_deregister(ifp); +#endif + + if (sc->xl_flags & XL_FLAG_USE_MMIO) { + rid = XL_PCI_LOMEM; + res = SYS_RES_MEMORY; + } else { + rid = XL_PCI_LOIO; + res = SYS_RES_IOPORT; + } + + /* These should only be active if attach succeeded */ + if (device_is_attached(dev)) { + XL_LOCK(sc); + xl_reset(sc); + xl_stop(sc); + XL_UNLOCK(sc); + taskqueue_drain(taskqueue_swi, &sc->xl_task); + callout_drain(&sc->xl_stat_callout); + ether_ifdetach(ifp); + } + if (sc->xl_miibus) + device_delete_child(dev, sc->xl_miibus); + bus_generic_detach(dev); + ifmedia_removeall(&sc->ifmedia); + + if (sc->xl_intrhand) + bus_teardown_intr(dev, sc->xl_irq, sc->xl_intrhand); + if (sc->xl_irq) + bus_release_resource(dev, SYS_RES_IRQ, 0, sc->xl_irq); + if (sc->xl_fres != NULL) + bus_release_resource(dev, SYS_RES_MEMORY, + XL_PCI_FUNCMEM, sc->xl_fres); + if (sc->xl_res) + bus_release_resource(dev, res, rid, sc->xl_res); + + if (ifp) + if_free(ifp); + + if (sc->xl_mtag) { + bus_dmamap_destroy(sc->xl_mtag, sc->xl_tmpmap); + bus_dma_tag_destroy(sc->xl_mtag); + } + if (sc->xl_ldata.xl_rx_tag) { + bus_dmamap_unload(sc->xl_ldata.xl_rx_tag, + sc->xl_ldata.xl_rx_dmamap); + bus_dmamem_free(sc->xl_ldata.xl_rx_tag, sc->xl_ldata.xl_rx_list, + sc->xl_ldata.xl_rx_dmamap); + bus_dma_tag_destroy(sc->xl_ldata.xl_rx_tag); + } + if (sc->xl_ldata.xl_tx_tag) { + bus_dmamap_unload(sc->xl_ldata.xl_tx_tag, + sc->xl_ldata.xl_tx_dmamap); + bus_dmamem_free(sc->xl_ldata.xl_tx_tag, sc->xl_ldata.xl_tx_list, + sc->xl_ldata.xl_tx_dmamap); + bus_dma_tag_destroy(sc->xl_ldata.xl_tx_tag); + } + + mtx_destroy(&sc->xl_mtx); + + return (0); +} + +/* + * Initialize the transmit descriptors. + */ +static int +xl_list_tx_init(struct xl_softc *sc) +{ + struct xl_chain_data *cd; + struct xl_list_data *ld; + int error, i; + + XL_LOCK_ASSERT(sc); + + cd = &sc->xl_cdata; + ld = &sc->xl_ldata; + for (i = 0; i < XL_TX_LIST_CNT; i++) { + cd->xl_tx_chain[i].xl_ptr = &ld->xl_tx_list[i]; + error = bus_dmamap_create(sc->xl_mtag, 0, + &cd->xl_tx_chain[i].xl_map); + if (error) + return (error); + cd->xl_tx_chain[i].xl_phys = ld->xl_tx_dmaaddr + + i * sizeof(struct xl_list); + if (i == (XL_TX_LIST_CNT - 1)) + cd->xl_tx_chain[i].xl_next = NULL; + else + cd->xl_tx_chain[i].xl_next = &cd->xl_tx_chain[i + 1]; + } + + cd->xl_tx_free = &cd->xl_tx_chain[0]; + cd->xl_tx_tail = cd->xl_tx_head = NULL; + + bus_dmamap_sync(ld->xl_tx_tag, ld->xl_tx_dmamap, BUS_DMASYNC_PREWRITE); + return (0); +} + +/* + * Initialize the transmit descriptors. + */ +static int +xl_list_tx_init_90xB(struct xl_softc *sc) +{ + struct xl_chain_data *cd; + struct xl_list_data *ld; + int error, i; + + XL_LOCK_ASSERT(sc); + + cd = &sc->xl_cdata; + ld = &sc->xl_ldata; + for (i = 0; i < XL_TX_LIST_CNT; i++) { + cd->xl_tx_chain[i].xl_ptr = &ld->xl_tx_list[i]; + error = bus_dmamap_create(sc->xl_mtag, 0, + &cd->xl_tx_chain[i].xl_map); + if (error) + return (error); + cd->xl_tx_chain[i].xl_phys = ld->xl_tx_dmaaddr + + i * sizeof(struct xl_list); + if (i == (XL_TX_LIST_CNT - 1)) + cd->xl_tx_chain[i].xl_next = &cd->xl_tx_chain[0]; + else + cd->xl_tx_chain[i].xl_next = &cd->xl_tx_chain[i + 1]; + if (i == 0) + cd->xl_tx_chain[i].xl_prev = + &cd->xl_tx_chain[XL_TX_LIST_CNT - 1]; + else + cd->xl_tx_chain[i].xl_prev = + &cd->xl_tx_chain[i - 1]; + } + + bzero(ld->xl_tx_list, XL_TX_LIST_SZ); + ld->xl_tx_list[0].xl_status = htole32(XL_TXSTAT_EMPTY); + + cd->xl_tx_prod = 1; + cd->xl_tx_cons = 1; + cd->xl_tx_cnt = 0; + + bus_dmamap_sync(ld->xl_tx_tag, ld->xl_tx_dmamap, BUS_DMASYNC_PREWRITE); + return (0); +} + +/* + * Initialize the RX descriptors and allocate mbufs for them. Note that + * we arrange the descriptors in a closed ring, so that the last descriptor + * points back to the first. + */ +static int +xl_list_rx_init(struct xl_softc *sc) +{ + struct xl_chain_data *cd; + struct xl_list_data *ld; + int error, i, next; + u_int32_t nextptr; + + XL_LOCK_ASSERT(sc); + + cd = &sc->xl_cdata; + ld = &sc->xl_ldata; + + for (i = 0; i < XL_RX_LIST_CNT; i++) { + cd->xl_rx_chain[i].xl_ptr = &ld->xl_rx_list[i]; + error = bus_dmamap_create(sc->xl_mtag, 0, + &cd->xl_rx_chain[i].xl_map); + if (error) + return (error); + error = xl_newbuf(sc, &cd->xl_rx_chain[i]); + if (error) + return (error); + if (i == (XL_RX_LIST_CNT - 1)) + next = 0; + else + next = i + 1; + nextptr = ld->xl_rx_dmaaddr + + next * sizeof(struct xl_list_onefrag); + cd->xl_rx_chain[i].xl_next = &cd->xl_rx_chain[next]; + ld->xl_rx_list[i].xl_next = htole32(nextptr); + } + + bus_dmamap_sync(ld->xl_rx_tag, ld->xl_rx_dmamap, BUS_DMASYNC_PREWRITE); + cd->xl_rx_head = &cd->xl_rx_chain[0]; + + return (0); +} + +/* + * Initialize an RX descriptor and attach an MBUF cluster. + * If we fail to do so, we need to leave the old mbuf and + * the old DMA map untouched so that it can be reused. + */ +static int +xl_newbuf(struct xl_softc *sc, struct xl_chain_onefrag *c) +{ + struct mbuf *m_new = NULL; + bus_dmamap_t map; + bus_dma_segment_t segs[1]; + int error, nseg; + + XL_LOCK_ASSERT(sc); + + m_new = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); + if (m_new == NULL) + return (ENOBUFS); + + m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; + + /* Force longword alignment for packet payload. */ + m_adj(m_new, ETHER_ALIGN); + + error = bus_dmamap_load_mbuf_sg(sc->xl_mtag, sc->xl_tmpmap, m_new, + segs, &nseg, BUS_DMA_NOWAIT); + if (error) { + m_freem(m_new); + device_printf(sc->xl_dev, "can't map mbuf (error %d)\n", + error); + return (error); + } + KASSERT(nseg == 1, + ("%s: too many DMA segments (%d)", __func__, nseg)); + + bus_dmamap_unload(sc->xl_mtag, c->xl_map); + map = c->xl_map; + c->xl_map = sc->xl_tmpmap; + sc->xl_tmpmap = map; + c->xl_mbuf = m_new; + c->xl_ptr->xl_frag.xl_len = htole32(m_new->m_len | XL_LAST_FRAG); + c->xl_ptr->xl_status = 0; + c->xl_ptr->xl_frag.xl_addr = htole32(segs->ds_addr); + bus_dmamap_sync(sc->xl_mtag, c->xl_map, BUS_DMASYNC_PREREAD); + return (0); +} + +static int +xl_rx_resync(struct xl_softc *sc) +{ + struct xl_chain_onefrag *pos; + int i; + + XL_LOCK_ASSERT(sc); + + pos = sc->xl_cdata.xl_rx_head; + + for (i = 0; i < XL_RX_LIST_CNT; i++) { + if (pos->xl_ptr->xl_status) + break; + pos = pos->xl_next; + } + + if (i == XL_RX_LIST_CNT) + return (0); + + sc->xl_cdata.xl_rx_head = pos; + + return (EAGAIN); +} + +/* + * A frame has been uploaded: pass the resulting mbuf chain up to + * the higher level protocols. + */ +static void +xl_rxeof(struct xl_softc *sc) +{ + struct mbuf *m; + struct ifnet *ifp = sc->xl_ifp; + struct xl_chain_onefrag *cur_rx; + int total_len = 0; + u_int32_t rxstat; + + XL_LOCK_ASSERT(sc); +again: + bus_dmamap_sync(sc->xl_ldata.xl_rx_tag, sc->xl_ldata.xl_rx_dmamap, + BUS_DMASYNC_POSTREAD); + while ((rxstat = le32toh(sc->xl_cdata.xl_rx_head->xl_ptr->xl_status))) { +#ifdef DEVICE_POLLING + if (ifp->if_capenable & IFCAP_POLLING) { + if (sc->rxcycles <= 0) + break; + sc->rxcycles--; + } +#endif + cur_rx = sc->xl_cdata.xl_rx_head; + sc->xl_cdata.xl_rx_head = cur_rx->xl_next; + total_len = rxstat & XL_RXSTAT_LENMASK; + + /* + * Since we have told the chip to allow large frames, + * we need to trap giant frame errors in software. We allow + * a little more than the normal frame size to account for + * frames with VLAN tags. + */ + if (total_len > XL_MAX_FRAMELEN) + rxstat |= (XL_RXSTAT_UP_ERROR|XL_RXSTAT_OVERSIZE); + + /* + * If an error occurs, update stats, clear the + * status word and leave the mbuf cluster in place: + * it should simply get re-used next time this descriptor + * comes up in the ring. + */ + if (rxstat & XL_RXSTAT_UP_ERROR) { + ifp->if_ierrors++; + cur_rx->xl_ptr->xl_status = 0; + bus_dmamap_sync(sc->xl_ldata.xl_rx_tag, + sc->xl_ldata.xl_rx_dmamap, BUS_DMASYNC_PREWRITE); + continue; + } + + /* + * If the error bit was not set, the upload complete + * bit should be set which means we have a valid packet. + * If not, something truly strange has happened. + */ + if (!(rxstat & XL_RXSTAT_UP_CMPLT)) { + device_printf(sc->xl_dev, + "bad receive status -- packet dropped\n"); + ifp->if_ierrors++; + cur_rx->xl_ptr->xl_status = 0; + bus_dmamap_sync(sc->xl_ldata.xl_rx_tag, + sc->xl_ldata.xl_rx_dmamap, BUS_DMASYNC_PREWRITE); + continue; + } + + /* No errors; receive the packet. */ + bus_dmamap_sync(sc->xl_mtag, cur_rx->xl_map, + BUS_DMASYNC_POSTREAD); + m = cur_rx->xl_mbuf; + + /* + * Try to conjure up a new mbuf cluster. If that + * fails, it means we have an out of memory condition and + * should leave the buffer in place and continue. This will + * result in a lost packet, but there's little else we + * can do in this situation. + */ + if (xl_newbuf(sc, cur_rx)) { + ifp->if_ierrors++; + cur_rx->xl_ptr->xl_status = 0; + bus_dmamap_sync(sc->xl_ldata.xl_rx_tag, + sc->xl_ldata.xl_rx_dmamap, BUS_DMASYNC_PREWRITE); + continue; + } + bus_dmamap_sync(sc->xl_ldata.xl_rx_tag, + sc->xl_ldata.xl_rx_dmamap, BUS_DMASYNC_PREWRITE); + + ifp->if_ipackets++; + m->m_pkthdr.rcvif = ifp; + m->m_pkthdr.len = m->m_len = total_len; + + if (ifp->if_capenable & IFCAP_RXCSUM) { + /* Do IP checksum checking. */ + if (rxstat & XL_RXSTAT_IPCKOK) + m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED; + if (!(rxstat & XL_RXSTAT_IPCKERR)) + m->m_pkthdr.csum_flags |= CSUM_IP_VALID; + if ((rxstat & XL_RXSTAT_TCPCOK && + !(rxstat & XL_RXSTAT_TCPCKERR)) || + (rxstat & XL_RXSTAT_UDPCKOK && + !(rxstat & XL_RXSTAT_UDPCKERR))) { + m->m_pkthdr.csum_flags |= + CSUM_DATA_VALID|CSUM_PSEUDO_HDR; + m->m_pkthdr.csum_data = 0xffff; + } + } + + XL_UNLOCK(sc); + (*ifp->if_input)(ifp, m); + XL_LOCK(sc); + + /* + * If we are running from the taskqueue, the interface + * might have been stopped while we were passing the last + * packet up the network stack. + */ + if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) + return; + } + + /* + * 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, XL_UPLIST_PTR) == 0 || + CSR_READ_4(sc, XL_UPLIST_STATUS) & XL_PKTSTAT_UP_STALLED) { + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_UP_STALL); + xl_wait(sc); + CSR_WRITE_4(sc, XL_UPLIST_PTR, sc->xl_ldata.xl_rx_dmaaddr); + sc->xl_cdata.xl_rx_head = &sc->xl_cdata.xl_rx_chain[0]; + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_UP_UNSTALL); + goto again; + } +} + +/* + * Taskqueue wrapper for xl_rxeof(). + */ +static void +xl_rxeof_task(void *arg, int pending) +{ + struct xl_softc *sc = (struct xl_softc *)arg; + + XL_LOCK(sc); + if (sc->xl_ifp->if_drv_flags & IFF_DRV_RUNNING) + xl_rxeof(sc); + XL_UNLOCK(sc); +} + +/* + * A frame was downloaded to the chip. It's safe for us to clean up + * the list buffers. + */ +static void +xl_txeof(struct xl_softc *sc) +{ + struct xl_chain *cur_tx; + struct ifnet *ifp = sc->xl_ifp; + + XL_LOCK_ASSERT(sc); + + /* + * Go through our tx list and free mbufs for those + * frames that have been uploaded. Note: the 3c905B + * sets a special bit in the status word to let us + * know that a frame has been downloaded, but the + * original 3c900/3c905 adapters don't do that. + * Consequently, we have to use a different test if + * xl_type != XL_TYPE_905B. + */ + while (sc->xl_cdata.xl_tx_head != NULL) { + cur_tx = sc->xl_cdata.xl_tx_head; + + if (CSR_READ_4(sc, XL_DOWNLIST_PTR)) + break; + + sc->xl_cdata.xl_tx_head = cur_tx->xl_next; + bus_dmamap_sync(sc->xl_mtag, cur_tx->xl_map, + BUS_DMASYNC_POSTWRITE); + bus_dmamap_unload(sc->xl_mtag, cur_tx->xl_map); + m_freem(cur_tx->xl_mbuf); + cur_tx->xl_mbuf = NULL; + ifp->if_opackets++; + + cur_tx->xl_next = sc->xl_cdata.xl_tx_free; + sc->xl_cdata.xl_tx_free = cur_tx; + } + + if (sc->xl_cdata.xl_tx_head == NULL) { + ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; + sc->xl_wdog_timer = 0; + sc->xl_cdata.xl_tx_tail = NULL; + } else { + if (CSR_READ_4(sc, XL_DMACTL) & XL_DMACTL_DOWN_STALLED || + !CSR_READ_4(sc, XL_DOWNLIST_PTR)) { + CSR_WRITE_4(sc, XL_DOWNLIST_PTR, + sc->xl_cdata.xl_tx_head->xl_phys); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_UNSTALL); + } + } +} + +static void +xl_txeof_90xB(struct xl_softc *sc) +{ + struct xl_chain *cur_tx = NULL; + struct ifnet *ifp = sc->xl_ifp; + int idx; + + XL_LOCK_ASSERT(sc); + + bus_dmamap_sync(sc->xl_ldata.xl_tx_tag, sc->xl_ldata.xl_tx_dmamap, + BUS_DMASYNC_POSTREAD); + idx = sc->xl_cdata.xl_tx_cons; + while (idx != sc->xl_cdata.xl_tx_prod) { + cur_tx = &sc->xl_cdata.xl_tx_chain[idx]; + + if (!(le32toh(cur_tx->xl_ptr->xl_status) & + XL_TXSTAT_DL_COMPLETE)) + break; + + if (cur_tx->xl_mbuf != NULL) { + bus_dmamap_sync(sc->xl_mtag, cur_tx->xl_map, + BUS_DMASYNC_POSTWRITE); + bus_dmamap_unload(sc->xl_mtag, cur_tx->xl_map); + m_freem(cur_tx->xl_mbuf); + cur_tx->xl_mbuf = NULL; + } + + ifp->if_opackets++; + + sc->xl_cdata.xl_tx_cnt--; + XL_INC(idx, XL_TX_LIST_CNT); + } + + if (sc->xl_cdata.xl_tx_cnt == 0) + sc->xl_wdog_timer = 0; + sc->xl_cdata.xl_tx_cons = idx; + + if (cur_tx != NULL) + ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; +} + +/* + * TX 'end of channel' interrupt handler. Actually, we should + * only get a 'TX complete' interrupt if there's a transmit error, + * so this is really TX error handler. + */ +static void +xl_txeoc(struct xl_softc *sc) +{ + u_int8_t txstat; + + XL_LOCK_ASSERT(sc); + + while ((txstat = CSR_READ_1(sc, XL_TX_STATUS))) { + if (txstat & XL_TXSTATUS_UNDERRUN || + txstat & XL_TXSTATUS_JABBER || + txstat & XL_TXSTATUS_RECLAIM) { + device_printf(sc->xl_dev, + "transmission error: %x\n", txstat); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_RESET); + xl_wait(sc); + if (sc->xl_type == XL_TYPE_905B) { + if (sc->xl_cdata.xl_tx_cnt) { + int i; + struct xl_chain *c; + + i = sc->xl_cdata.xl_tx_cons; + c = &sc->xl_cdata.xl_tx_chain[i]; + CSR_WRITE_4(sc, XL_DOWNLIST_PTR, + c->xl_phys); + CSR_WRITE_1(sc, XL_DOWN_POLL, 64); + } + } else { + if (sc->xl_cdata.xl_tx_head != NULL) + CSR_WRITE_4(sc, XL_DOWNLIST_PTR, + sc->xl_cdata.xl_tx_head->xl_phys); + } + /* + * Remember to set this for the + * first generation 3c90X chips. + */ + CSR_WRITE_1(sc, XL_TX_FREETHRESH, XL_PACKET_SIZE >> 8); + if (txstat & XL_TXSTATUS_UNDERRUN && + sc->xl_tx_thresh < XL_PACKET_SIZE) { + sc->xl_tx_thresh += XL_MIN_FRAMELEN; + device_printf(sc->xl_dev, +"tx underrun, increasing tx start threshold to %d bytes\n", sc->xl_tx_thresh); + } + CSR_WRITE_2(sc, XL_COMMAND, + XL_CMD_TX_SET_START|sc->xl_tx_thresh); + if (sc->xl_type == XL_TYPE_905B) { + CSR_WRITE_2(sc, XL_COMMAND, + XL_CMD_SET_TX_RECLAIM|(XL_PACKET_SIZE >> 4)); + } + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_ENABLE); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_UNSTALL); + } else { + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_ENABLE); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_UNSTALL); + } + /* + * Write an arbitrary byte to the TX_STATUS register + * to clear this interrupt/error and advance to the next. + */ + CSR_WRITE_1(sc, XL_TX_STATUS, 0x01); + } +} + +static void +xl_intr(void *arg) +{ + struct xl_softc *sc = arg; + struct ifnet *ifp = sc->xl_ifp; + u_int16_t status; + + XL_LOCK(sc); + +#ifdef DEVICE_POLLING + if (ifp->if_capenable & IFCAP_POLLING) { + XL_UNLOCK(sc); + return; + } +#endif + + while ((status = CSR_READ_2(sc, XL_STATUS)) & XL_INTRS && + status != 0xFFFF) { + CSR_WRITE_2(sc, XL_COMMAND, + XL_CMD_INTR_ACK|(status & XL_INTRS)); + + if (status & XL_STAT_UP_COMPLETE) { + int curpkts; + + curpkts = ifp->if_ipackets; + xl_rxeof(sc); + if (curpkts == ifp->if_ipackets) { + while (xl_rx_resync(sc)) + xl_rxeof(sc); + } + } + + if (status & XL_STAT_DOWN_COMPLETE) { + if (sc->xl_type == XL_TYPE_905B) + xl_txeof_90xB(sc); + else + xl_txeof(sc); + } + + if (status & XL_STAT_TX_COMPLETE) { + ifp->if_oerrors++; + xl_txeoc(sc); + } + + if (status & XL_STAT_ADFAIL) { + xl_reset(sc); + xl_init_locked(sc); + } + + if (status & XL_STAT_STATSOFLOW) { + sc->xl_stats_no_timeout = 1; + xl_stats_update_locked(sc); + sc->xl_stats_no_timeout = 0; + } + } + + if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) { + if (sc->xl_type == XL_TYPE_905B) + xl_start_90xB_locked(ifp); + else + xl_start_locked(ifp); + } + + XL_UNLOCK(sc); +} + +#ifdef DEVICE_POLLING +static void +xl_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) +{ + struct xl_softc *sc = ifp->if_softc; + + XL_LOCK(sc); + if (ifp->if_drv_flags & IFF_DRV_RUNNING) + xl_poll_locked(ifp, cmd, count); + XL_UNLOCK(sc); +} + +static void +xl_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count) +{ + struct xl_softc *sc = ifp->if_softc; + + XL_LOCK_ASSERT(sc); + + sc->rxcycles = count; + xl_rxeof(sc); + if (sc->xl_type == XL_TYPE_905B) + xl_txeof_90xB(sc); + else + xl_txeof(sc); + + if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) { + if (sc->xl_type == XL_TYPE_905B) + xl_start_90xB_locked(ifp); + else + xl_start_locked(ifp); + } + + if (cmd == POLL_AND_CHECK_STATUS) { + u_int16_t status; + + status = CSR_READ_2(sc, XL_STATUS); + if (status & XL_INTRS && status != 0xFFFF) { + CSR_WRITE_2(sc, XL_COMMAND, + XL_CMD_INTR_ACK|(status & XL_INTRS)); + + if (status & XL_STAT_TX_COMPLETE) { + ifp->if_oerrors++; + xl_txeoc(sc); + } + + if (status & XL_STAT_ADFAIL) { + xl_reset(sc); + xl_init_locked(sc); + } + + if (status & XL_STAT_STATSOFLOW) { + sc->xl_stats_no_timeout = 1; + xl_stats_update_locked(sc); + sc->xl_stats_no_timeout = 0; + } + } + } +} +#endif /* DEVICE_POLLING */ + +/* + * XXX: This is an entry point for callout which needs to take the lock. + */ +static void +xl_stats_update(void *xsc) +{ + struct xl_softc *sc = xsc; + + XL_LOCK_ASSERT(sc); + + if (xl_watchdog(sc) == EJUSTRETURN) + return; + + xl_stats_update_locked(sc); +} + +static void +xl_stats_update_locked(struct xl_softc *sc) +{ + struct ifnet *ifp = sc->xl_ifp; + struct xl_stats xl_stats; + u_int8_t *p; + int i; + struct mii_data *mii = NULL; + + XL_LOCK_ASSERT(sc); + + bzero((char *)&xl_stats, sizeof(struct xl_stats)); + + if (sc->xl_miibus != NULL) + mii = device_get_softc(sc->xl_miibus); + + p = (u_int8_t *)&xl_stats; + + /* Read all the stats registers. */ + XL_SEL_WIN(6); + + for (i = 0; i < 16; i++) + *p++ = CSR_READ_1(sc, XL_W6_CARRIER_LOST + i); + + ifp->if_ierrors += xl_stats.xl_rx_overrun; + + ifp->if_collisions += xl_stats.xl_tx_multi_collision + + xl_stats.xl_tx_single_collision + xl_stats.xl_tx_late_collision; + + /* + * Boomerang and cyclone chips have an extra stats counter + * in window 4 (BadSSD). We have to read this too in order + * to clear out all the stats registers and avoid a statsoflow + * interrupt. + */ + XL_SEL_WIN(4); + CSR_READ_1(sc, XL_W4_BADSSD); + + if ((mii != NULL) && (!sc->xl_stats_no_timeout)) + mii_tick(mii); + + XL_SEL_WIN(7); + + if (!sc->xl_stats_no_timeout) + callout_reset(&sc->xl_stat_callout, hz, xl_stats_update, sc); +} + +/* + * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data + * pointers to the fragment pointers. + */ +static int +xl_encap(struct xl_softc *sc, struct xl_chain *c, struct mbuf **m_head) +{ + struct mbuf *m_new; + struct ifnet *ifp = sc->xl_ifp; + int error, i, nseg, total_len; + u_int32_t status; + + XL_LOCK_ASSERT(sc); + + error = bus_dmamap_load_mbuf_sg(sc->xl_mtag, c->xl_map, *m_head, + sc->xl_cdata.xl_tx_segs, &nseg, BUS_DMA_NOWAIT); + + if (error && error != EFBIG) { + if_printf(ifp, "can't map mbuf (error %d)\n", error); + return (error); + } + + /* + * Handle special case: we used up all 63 fragments, + * but we have more mbufs left in the chain. Copy the + * data into an mbuf cluster. Note that we don't + * bother clearing the values in the other fragment + * pointers/counters; it wouldn't gain us anything, + * and would waste cycles. + */ + if (error) { + m_new = m_collapse(*m_head, M_DONTWAIT, XL_MAXFRAGS); + if (m_new == NULL) { + m_freem(*m_head); + *m_head = NULL; + return (ENOBUFS); + } + *m_head = m_new; + + error = bus_dmamap_load_mbuf_sg(sc->xl_mtag, c->xl_map, + *m_head, sc->xl_cdata.xl_tx_segs, &nseg, BUS_DMA_NOWAIT); + if (error) { + m_freem(*m_head); + *m_head = NULL; + if_printf(ifp, "can't map mbuf (error %d)\n", error); + return (error); + } + } + + KASSERT(nseg <= XL_MAXFRAGS, + ("%s: too many DMA segments (%d)", __func__, nseg)); + if (nseg == 0) { + m_freem(*m_head); + *m_head = NULL; + return (EIO); + } + + total_len = 0; + for (i = 0; i < nseg; i++) { + KASSERT(sc->xl_cdata.xl_tx_segs[i].ds_len <= MCLBYTES, + ("segment size too large")); + c->xl_ptr->xl_frag[i].xl_addr = + htole32(sc->xl_cdata.xl_tx_segs[i].ds_addr); + c->xl_ptr->xl_frag[i].xl_len = + htole32(sc->xl_cdata.xl_tx_segs[i].ds_len); + total_len += sc->xl_cdata.xl_tx_segs[i].ds_len; + } + c->xl_ptr->xl_frag[nseg - 1].xl_len = + htole32(sc->xl_cdata.xl_tx_segs[nseg - 1].ds_len | XL_LAST_FRAG); + c->xl_ptr->xl_status = htole32(total_len); + c->xl_ptr->xl_next = 0; + + if (sc->xl_type == XL_TYPE_905B) { + status = XL_TXSTAT_RND_DEFEAT; + +#ifndef XL905B_TXCSUM_BROKEN + if (m_head->m_pkthdr.csum_flags) { + if (m_head->m_pkthdr.csum_flags & CSUM_IP) + status |= XL_TXSTAT_IPCKSUM; + if (m_head->m_pkthdr.csum_flags & CSUM_TCP) + status |= XL_TXSTAT_TCPCKSUM; + if (m_head->m_pkthdr.csum_flags & CSUM_UDP) + status |= XL_TXSTAT_UDPCKSUM; + } +#endif + c->xl_ptr->xl_status = htole32(status); + } + + c->xl_mbuf = *m_head; + bus_dmamap_sync(sc->xl_mtag, c->xl_map, BUS_DMASYNC_PREWRITE); + return (0); +} + +/* + * Main transmit routine. To avoid having to do mbuf copies, we put pointers + * to the mbuf data regions directly in the transmit lists. We also save a + * copy of the pointers since the transmit list fragment pointers are + * physical addresses. + */ + +static void +xl_start(struct ifnet *ifp) +{ + struct xl_softc *sc = ifp->if_softc; + + XL_LOCK(sc); + + if (sc->xl_type == XL_TYPE_905B) + xl_start_90xB_locked(ifp); + else + xl_start_locked(ifp); + + XL_UNLOCK(sc); +} + +static void +xl_start_locked(struct ifnet *ifp) +{ + struct xl_softc *sc = ifp->if_softc; + struct mbuf *m_head = NULL; + struct xl_chain *prev = NULL, *cur_tx = NULL, *start_tx; + u_int32_t status; + int error; + + XL_LOCK_ASSERT(sc); + + /* + * Check for an available queue slot. If there are none, + * punt. + */ + if (sc->xl_cdata.xl_tx_free == NULL) { + xl_txeoc(sc); + xl_txeof(sc); + if (sc->xl_cdata.xl_tx_free == NULL) { + ifp->if_drv_flags |= IFF_DRV_OACTIVE; + return; + } + } + + start_tx = sc->xl_cdata.xl_tx_free; + + for (; !IFQ_DRV_IS_EMPTY(&ifp->if_snd) && + sc->xl_cdata.xl_tx_free != NULL;) { + IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); + if (m_head == NULL) + break; + + /* Pick a descriptor off the free list. */ + cur_tx = sc->xl_cdata.xl_tx_free; + + /* Pack the data into the descriptor. */ + error = xl_encap(sc, cur_tx, &m_head); + if (error) { + if (m_head == NULL) + break; + ifp->if_drv_flags |= IFF_DRV_OACTIVE; + IFQ_DRV_PREPEND(&ifp->if_snd, m_head); + break; + } + + sc->xl_cdata.xl_tx_free = cur_tx->xl_next; + cur_tx->xl_next = NULL; + + /* Chain it together. */ + if (prev != NULL) { + prev->xl_next = cur_tx; + prev->xl_ptr->xl_next = htole32(cur_tx->xl_phys); + } + prev = cur_tx; + + /* + * If there's a BPF listener, bounce a copy of this frame + * to him. + */ + BPF_MTAP(ifp, cur_tx->xl_mbuf); + } + + /* + * If there are no packets queued, bail. + */ + if (cur_tx == NULL) + return; + + /* + * Place the request for the upload interrupt + * in the last descriptor in the chain. This way, if + * we're chaining several packets at once, we'll only + * get an interrupt once for the whole chain rather than + * once for each packet. + */ + cur_tx->xl_ptr->xl_status = htole32(le32toh(cur_tx->xl_ptr->xl_status) | + XL_TXSTAT_DL_INTR); + bus_dmamap_sync(sc->xl_ldata.xl_tx_tag, sc->xl_ldata.xl_tx_dmamap, + BUS_DMASYNC_PREWRITE); + + /* + * Queue the packets. If the TX channel is clear, update + * the downlist pointer register. + */ + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_STALL); + xl_wait(sc); + + if (sc->xl_cdata.xl_tx_head != NULL) { + sc->xl_cdata.xl_tx_tail->xl_next = start_tx; + sc->xl_cdata.xl_tx_tail->xl_ptr->xl_next = + htole32(start_tx->xl_phys); + status = sc->xl_cdata.xl_tx_tail->xl_ptr->xl_status; + sc->xl_cdata.xl_tx_tail->xl_ptr->xl_status = + htole32(le32toh(status) & ~XL_TXSTAT_DL_INTR); + sc->xl_cdata.xl_tx_tail = cur_tx; + } else { + sc->xl_cdata.xl_tx_head = start_tx; + sc->xl_cdata.xl_tx_tail = cur_tx; + } + if (!CSR_READ_4(sc, XL_DOWNLIST_PTR)) + CSR_WRITE_4(sc, XL_DOWNLIST_PTR, start_tx->xl_phys); + + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_UNSTALL); + + XL_SEL_WIN(7); + + /* + * Set a timeout in case the chip goes out to lunch. + */ + sc->xl_wdog_timer = 5; + + /* + * XXX Under certain conditions, usually on slower machines + * where interrupts may be dropped, it's possible for the + * adapter to chew up all the buffers in the receive ring + * and stall, without us being able to do anything about it. + * To guard against this, we need to make a pass over the + * RX queue to make sure there aren't any packets pending. + * Doing it here means we can flush the receive ring at the + * same time the chip is DMAing the transmit descriptors we + * just gave it. + * + * 3Com goes to some lengths to emphasize the Parallel Tasking (tm) + * nature of their chips in all their marketing literature; + * we may as well take advantage of it. :) + */ + taskqueue_enqueue(taskqueue_swi, &sc->xl_task); +} + +static void +xl_start_90xB_locked(struct ifnet *ifp) +{ + struct xl_softc *sc = ifp->if_softc; + struct mbuf *m_head = NULL; + struct xl_chain *prev = NULL, *cur_tx = NULL, *start_tx; + int error, idx; + + XL_LOCK_ASSERT(sc); + + if (ifp->if_drv_flags & IFF_DRV_OACTIVE) + return; + + idx = sc->xl_cdata.xl_tx_prod; + start_tx = &sc->xl_cdata.xl_tx_chain[idx]; + + for (; !IFQ_DRV_IS_EMPTY(&ifp->if_snd) && + sc->xl_cdata.xl_tx_chain[idx].xl_mbuf == NULL;) { + if ((XL_TX_LIST_CNT - sc->xl_cdata.xl_tx_cnt) < 3) { + ifp->if_drv_flags |= IFF_DRV_OACTIVE; + break; + } + + IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); + if (m_head == NULL) + break; + + cur_tx = &sc->xl_cdata.xl_tx_chain[idx]; + + /* Pack the data into the descriptor. */ + error = xl_encap(sc, cur_tx, &m_head); + if (error) { + if (m_head == NULL) + break; + ifp->if_drv_flags |= IFF_DRV_OACTIVE; + IFQ_DRV_PREPEND(&ifp->if_snd, m_head); + break; + } + + /* Chain it together. */ + if (prev != NULL) + prev->xl_ptr->xl_next = htole32(cur_tx->xl_phys); + prev = cur_tx; + + /* + * If there's a BPF listener, bounce a copy of this frame + * to him. + */ + BPF_MTAP(ifp, cur_tx->xl_mbuf); + + XL_INC(idx, XL_TX_LIST_CNT); + sc->xl_cdata.xl_tx_cnt++; + } + + /* + * If there are no packets queued, bail. + */ + if (cur_tx == NULL) + return; + + /* + * Place the request for the upload interrupt + * in the last descriptor in the chain. This way, if + * we're chaining several packets at once, we'll only + * get an interrupt once for the whole chain rather than + * once for each packet. + */ + cur_tx->xl_ptr->xl_status = htole32(le32toh(cur_tx->xl_ptr->xl_status) | + XL_TXSTAT_DL_INTR); + bus_dmamap_sync(sc->xl_ldata.xl_tx_tag, sc->xl_ldata.xl_tx_dmamap, + BUS_DMASYNC_PREWRITE); + + /* Start transmission */ + sc->xl_cdata.xl_tx_prod = idx; + start_tx->xl_prev->xl_ptr->xl_next = htole32(start_tx->xl_phys); + + /* + * Set a timeout in case the chip goes out to lunch. + */ + sc->xl_wdog_timer = 5; +} + +static void +xl_init(void *xsc) +{ + struct xl_softc *sc = xsc; + + XL_LOCK(sc); + xl_init_locked(sc); + XL_UNLOCK(sc); +} + +static void +xl_init_locked(struct xl_softc *sc) +{ + struct ifnet *ifp = sc->xl_ifp; + int error, i; + u_int16_t rxfilt = 0; + struct mii_data *mii = NULL; + + XL_LOCK_ASSERT(sc); + + /* + * Cancel pending I/O and free all RX/TX buffers. + */ + xl_stop(sc); + + if (sc->xl_miibus == NULL) { + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_RESET); + xl_wait(sc); + } + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_RESET); + xl_wait(sc); + DELAY(10000); + + if (sc->xl_miibus != NULL) + mii = device_get_softc(sc->xl_miibus); + + /* Init our MAC address */ + XL_SEL_WIN(2); + for (i = 0; i < ETHER_ADDR_LEN; i++) { + CSR_WRITE_1(sc, XL_W2_STATION_ADDR_LO + i, + IF_LLADDR(sc->xl_ifp)[i]); + } + + /* Clear the station mask. */ + for (i = 0; i < 3; i++) + CSR_WRITE_2(sc, XL_W2_STATION_MASK_LO + (i * 2), 0); +#ifdef notdef + /* Reset TX and RX. */ + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_RESET); + xl_wait(sc); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_RESET); + xl_wait(sc); +#endif + /* Init circular RX list. */ + error = xl_list_rx_init(sc); + if (error) { + device_printf(sc->xl_dev, "initialization of the rx ring failed (%d)\n", + error); + xl_stop(sc); + return; + } + + /* Init TX descriptors. */ + if (sc->xl_type == XL_TYPE_905B) + error = xl_list_tx_init_90xB(sc); + else + error = xl_list_tx_init(sc); + if (error) { + device_printf(sc->xl_dev, "initialization of the tx ring failed (%d)\n", + error); + xl_stop(sc); + return; + } + + /* + * Set the TX freethresh value. + * Note that this has no effect on 3c905B "cyclone" + * cards but is required for 3c900/3c905 "boomerang" + * cards in order to enable the download engine. + */ + CSR_WRITE_1(sc, XL_TX_FREETHRESH, XL_PACKET_SIZE >> 8); + + /* Set the TX start threshold for best performance. */ + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_SET_START|sc->xl_tx_thresh); + + /* + * If this is a 3c905B, also set the tx reclaim threshold. + * This helps cut down on the number of tx reclaim errors + * that could happen on a busy network. The chip multiplies + * the register value by 16 to obtain the actual threshold + * in bytes, so we divide by 16 when setting the value here. + * The existing threshold value can be examined by reading + * the register at offset 9 in window 5. + */ + if (sc->xl_type == XL_TYPE_905B) { + CSR_WRITE_2(sc, XL_COMMAND, + XL_CMD_SET_TX_RECLAIM|(XL_PACKET_SIZE >> 4)); + } + + /* Set RX filter bits. */ + XL_SEL_WIN(5); + rxfilt = CSR_READ_1(sc, XL_W5_RX_FILTER); + + /* Set the individual bit to receive frames for this host only. */ + rxfilt |= XL_RXFILTER_INDIVIDUAL; + + /* If we want promiscuous mode, set the allframes bit. */ + if (ifp->if_flags & IFF_PROMISC) { + rxfilt |= XL_RXFILTER_ALLFRAMES; + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_FILT|rxfilt); + } else { + rxfilt &= ~XL_RXFILTER_ALLFRAMES; + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_FILT|rxfilt); + } + + /* + * Set capture broadcast bit to capture broadcast frames. + */ + if (ifp->if_flags & IFF_BROADCAST) { + rxfilt |= XL_RXFILTER_BROADCAST; + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_FILT|rxfilt); + } else { + rxfilt &= ~XL_RXFILTER_BROADCAST; + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_FILT|rxfilt); + } + + /* + * Program the multicast filter, if necessary. + */ + if (sc->xl_type == XL_TYPE_905B) + xl_setmulti_hash(sc); + else + xl_setmulti(sc); + + /* + * Load the address of the RX list. We have to + * stall the upload engine before we can manipulate + * the uplist pointer register, then unstall it when + * we're finished. We also have to wait for the + * stall command to complete before proceeding. + * Note that we have to do this after any RX resets + * have completed since the uplist register is cleared + * by a reset. + */ + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_UP_STALL); + xl_wait(sc); + CSR_WRITE_4(sc, XL_UPLIST_PTR, sc->xl_ldata.xl_rx_dmaaddr); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_UP_UNSTALL); + xl_wait(sc); + + if (sc->xl_type == XL_TYPE_905B) { + /* Set polling interval */ + CSR_WRITE_1(sc, XL_DOWN_POLL, 64); + /* Load the address of the TX list */ + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_STALL); + xl_wait(sc); + CSR_WRITE_4(sc, XL_DOWNLIST_PTR, + sc->xl_cdata.xl_tx_chain[0].xl_phys); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_DOWN_UNSTALL); + xl_wait(sc); + } + + /* + * If the coax transceiver is on, make sure to enable + * the DC-DC converter. + */ + XL_SEL_WIN(3); + if (sc->xl_xcvr == XL_XCVR_COAX) + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_START); + else + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_STOP); + + /* + * increase packet size to allow reception of 802.1q or ISL packets. + * For the 3c90x chip, set the 'allow large packets' bit in the MAC + * control register. For 3c90xB/C chips, use the RX packet size + * register. + */ + + if (sc->xl_type == XL_TYPE_905B) + CSR_WRITE_2(sc, XL_W3_MAXPKTSIZE, XL_PACKET_SIZE); + else { + u_int8_t macctl; + macctl = CSR_READ_1(sc, XL_W3_MAC_CTRL); + macctl |= XL_MACCTRL_ALLOW_LARGE_PACK; + CSR_WRITE_1(sc, XL_W3_MAC_CTRL, macctl); + } + + /* Clear out the stats counters. */ + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_STATS_DISABLE); + sc->xl_stats_no_timeout = 1; + xl_stats_update_locked(sc); + sc->xl_stats_no_timeout = 0; + XL_SEL_WIN(4); + CSR_WRITE_2(sc, XL_W4_NET_DIAG, XL_NETDIAG_UPPER_BYTES_ENABLE); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_STATS_ENABLE); + + /* + * Enable interrupts. + */ + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ACK|0xFF); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_STAT_ENB|XL_INTRS); +#ifdef DEVICE_POLLING + /* Disable interrupts if we are polling. */ + if (ifp->if_capenable & IFCAP_POLLING) + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB|0); + else +#endif + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB|XL_INTRS); + if (sc->xl_flags & XL_FLAG_FUNCREG) + bus_space_write_4(sc->xl_ftag, sc->xl_fhandle, 4, 0x8000); + + /* Set the RX early threshold */ + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_SET_THRESH|(XL_PACKET_SIZE >>2)); + CSR_WRITE_2(sc, XL_DMACTL, XL_DMACTL_UP_RX_EARLY); + + /* Enable receiver and transmitter. */ + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_ENABLE); + xl_wait(sc); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_ENABLE); + xl_wait(sc); + + /* XXX Downcall to miibus. */ + if (mii != NULL) + mii_mediachg(mii); + + /* Select window 7 for normal operations. */ + XL_SEL_WIN(7); + + ifp->if_drv_flags |= IFF_DRV_RUNNING; + ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; + + sc->xl_wdog_timer = 0; + callout_reset(&sc->xl_stat_callout, hz, xl_stats_update, sc); +} + +/* + * Set media options. + */ +static int +xl_ifmedia_upd(struct ifnet *ifp) +{ + struct xl_softc *sc = ifp->if_softc; + struct ifmedia *ifm = NULL; + struct mii_data *mii = NULL; + + XL_LOCK(sc); + + if (sc->xl_miibus != NULL) + mii = device_get_softc(sc->xl_miibus); + if (mii == NULL) + ifm = &sc->ifmedia; + else + ifm = &mii->mii_media; + + switch (IFM_SUBTYPE(ifm->ifm_media)) { + case IFM_100_FX: + case IFM_10_FL: + case IFM_10_2: + case IFM_10_5: + xl_setmode(sc, ifm->ifm_media); + XL_UNLOCK(sc); + return (0); + } + + if (sc->xl_media & XL_MEDIAOPT_MII || + sc->xl_media & XL_MEDIAOPT_BTX || + sc->xl_media & XL_MEDIAOPT_BT4) { + xl_init_locked(sc); + } else { + xl_setmode(sc, ifm->ifm_media); + } + + XL_UNLOCK(sc); + + return (0); +} + +/* + * Report current media status. + */ +static void +xl_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) +{ + struct xl_softc *sc = ifp->if_softc; + u_int32_t icfg; + u_int16_t status = 0; + struct mii_data *mii = NULL; + + XL_LOCK(sc); + + if (sc->xl_miibus != NULL) + mii = device_get_softc(sc->xl_miibus); + + XL_SEL_WIN(4); + status = CSR_READ_2(sc, XL_W4_MEDIA_STATUS); + + XL_SEL_WIN(3); + icfg = CSR_READ_4(sc, XL_W3_INTERNAL_CFG) & XL_ICFG_CONNECTOR_MASK; + icfg >>= XL_ICFG_CONNECTOR_BITS; + + ifmr->ifm_active = IFM_ETHER; + ifmr->ifm_status = IFM_AVALID; + + if ((status & XL_MEDIASTAT_CARRIER) == 0) + ifmr->ifm_status |= IFM_ACTIVE; + + switch (icfg) { + case XL_XCVR_10BT: + ifmr->ifm_active = IFM_ETHER|IFM_10_T; + if (CSR_READ_1(sc, XL_W3_MAC_CTRL) & XL_MACCTRL_DUPLEX) + ifmr->ifm_active |= IFM_FDX; + else + ifmr->ifm_active |= IFM_HDX; + break; + case XL_XCVR_AUI: + if (sc->xl_type == XL_TYPE_905B && + sc->xl_media == XL_MEDIAOPT_10FL) { + ifmr->ifm_active = IFM_ETHER|IFM_10_FL; + if (CSR_READ_1(sc, XL_W3_MAC_CTRL) & XL_MACCTRL_DUPLEX) + ifmr->ifm_active |= IFM_FDX; + else + ifmr->ifm_active |= IFM_HDX; + } else + ifmr->ifm_active = IFM_ETHER|IFM_10_5; + break; + case XL_XCVR_COAX: + ifmr->ifm_active = IFM_ETHER|IFM_10_2; + break; + /* + * XXX MII and BTX/AUTO should be separate cases. + */ + + case XL_XCVR_100BTX: + case XL_XCVR_AUTO: + case XL_XCVR_MII: + if (mii != NULL) { + mii_pollstat(mii); + ifmr->ifm_active = mii->mii_media_active; + ifmr->ifm_status = mii->mii_media_status; + } + break; + case XL_XCVR_100BFX: + ifmr->ifm_active = IFM_ETHER|IFM_100_FX; + break; + default: + if_printf(ifp, "unknown XCVR type: %d\n", icfg); + break; + } + + XL_UNLOCK(sc); +} + +static int +xl_ioctl(struct ifnet *ifp, u_long command, caddr_t data) +{ + struct xl_softc *sc = ifp->if_softc; + struct ifreq *ifr = (struct ifreq *) data; + int error = 0; + struct mii_data *mii = NULL; + u_int8_t rxfilt; + + switch (command) { + case SIOCSIFFLAGS: + XL_LOCK(sc); + + XL_SEL_WIN(5); + rxfilt = CSR_READ_1(sc, XL_W5_RX_FILTER); + if (ifp->if_flags & IFF_UP) { + if (ifp->if_drv_flags & IFF_DRV_RUNNING && + ifp->if_flags & IFF_PROMISC && + !(sc->xl_if_flags & IFF_PROMISC)) { + rxfilt |= XL_RXFILTER_ALLFRAMES; + CSR_WRITE_2(sc, XL_COMMAND, + XL_CMD_RX_SET_FILT|rxfilt); + XL_SEL_WIN(7); + } else if (ifp->if_drv_flags & IFF_DRV_RUNNING && + !(ifp->if_flags & IFF_PROMISC) && + sc->xl_if_flags & IFF_PROMISC) { + rxfilt &= ~XL_RXFILTER_ALLFRAMES; + CSR_WRITE_2(sc, XL_COMMAND, + XL_CMD_RX_SET_FILT|rxfilt); + XL_SEL_WIN(7); + } else { + if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) + xl_init_locked(sc); + } + } else { + if (ifp->if_drv_flags & IFF_DRV_RUNNING) + xl_stop(sc); + } + sc->xl_if_flags = ifp->if_flags; + XL_UNLOCK(sc); + error = 0; + break; + case SIOCADDMULTI: + case SIOCDELMULTI: + /* XXX Downcall from if_addmulti() possibly with locks held. */ + XL_LOCK(sc); + if (sc->xl_type == XL_TYPE_905B) + xl_setmulti_hash(sc); + else + xl_setmulti(sc); + XL_UNLOCK(sc); + error = 0; + break; + case SIOCGIFMEDIA: + case SIOCSIFMEDIA: + if (sc->xl_miibus != NULL) + mii = device_get_softc(sc->xl_miibus); + if (mii == NULL) + error = ifmedia_ioctl(ifp, ifr, + &sc->ifmedia, command); + else + error = ifmedia_ioctl(ifp, ifr, + &mii->mii_media, command); + break; + case SIOCSIFCAP: +#ifdef DEVICE_POLLING + if (ifr->ifr_reqcap & IFCAP_POLLING && + !(ifp->if_capenable & IFCAP_POLLING)) { + error = ether_poll_register(xl_poll, ifp); + if (error) + return(error); + XL_LOCK(sc); + /* Disable interrupts */ + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB|0); + ifp->if_capenable |= IFCAP_POLLING; + XL_UNLOCK(sc); + return (error); + } + if (!(ifr->ifr_reqcap & IFCAP_POLLING) && + ifp->if_capenable & IFCAP_POLLING) { + error = ether_poll_deregister(ifp); + /* Enable interrupts. */ + XL_LOCK(sc); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ACK|0xFF); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB|XL_INTRS); + if (sc->xl_flags & XL_FLAG_FUNCREG) + bus_space_write_4(sc->xl_ftag, sc->xl_fhandle, + 4, 0x8000); + ifp->if_capenable &= ~IFCAP_POLLING; + XL_UNLOCK(sc); + return (error); + } +#endif /* DEVICE_POLLING */ + XL_LOCK(sc); + ifp->if_capenable = ifr->ifr_reqcap; + if (ifp->if_capenable & IFCAP_TXCSUM) + ifp->if_hwassist = XL905B_CSUM_FEATURES; + else + ifp->if_hwassist = 0; + XL_UNLOCK(sc); + break; + default: + error = ether_ioctl(ifp, command, data); + break; + } + + return (error); +} + +static int +xl_watchdog(struct xl_softc *sc) +{ + struct ifnet *ifp = sc->xl_ifp; + u_int16_t status = 0; + + XL_LOCK_ASSERT(sc); + + if (sc->xl_wdog_timer == 0 || --sc->xl_wdog_timer != 0) + return (0); + + ifp->if_oerrors++; + XL_SEL_WIN(4); + status = CSR_READ_2(sc, XL_W4_MEDIA_STATUS); + device_printf(sc->xl_dev, "watchdog timeout\n"); + + if (status & XL_MEDIASTAT_CARRIER) + device_printf(sc->xl_dev, + "no carrier - transceiver cable problem?\n"); + + xl_txeoc(sc); + xl_txeof(sc); + xl_rxeof(sc); + xl_reset(sc); + xl_init_locked(sc); + + if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) { + if (sc->xl_type == XL_TYPE_905B) + xl_start_90xB_locked(ifp); + else + xl_start_locked(ifp); + } + + return (EJUSTRETURN); +} + +/* + * Stop the adapter and free any mbufs allocated to the + * RX and TX lists. + */ +static void +xl_stop(struct xl_softc *sc) +{ + register int i; + struct ifnet *ifp = sc->xl_ifp; + + XL_LOCK_ASSERT(sc); + + sc->xl_wdog_timer = 0; + + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_DISABLE); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_STATS_DISABLE); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_DISCARD); + xl_wait(sc); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_DISABLE); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_COAX_STOP); + DELAY(800); + +#ifdef foo + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_RX_RESET); + xl_wait(sc); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_TX_RESET); + xl_wait(sc); +#endif + + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ACK|XL_STAT_INTLATCH); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_STAT_ENB|0); + CSR_WRITE_2(sc, XL_COMMAND, XL_CMD_INTR_ENB|0); + if (sc->xl_flags & XL_FLAG_FUNCREG) + bus_space_write_4(sc->xl_ftag, sc->xl_fhandle, 4, 0x8000); + + /* Stop the stats updater. */ + callout_stop(&sc->xl_stat_callout); + + /* + * Free data in the RX lists. + */ + for (i = 0; i < XL_RX_LIST_CNT; i++) { + if (sc->xl_cdata.xl_rx_chain[i].xl_mbuf != NULL) { + bus_dmamap_unload(sc->xl_mtag, + sc->xl_cdata.xl_rx_chain[i].xl_map); + bus_dmamap_destroy(sc->xl_mtag, + sc->xl_cdata.xl_rx_chain[i].xl_map); + m_freem(sc->xl_cdata.xl_rx_chain[i].xl_mbuf); + sc->xl_cdata.xl_rx_chain[i].xl_mbuf = NULL; + } + } + if (sc->xl_ldata.xl_rx_list != NULL) + bzero(sc->xl_ldata.xl_rx_list, XL_RX_LIST_SZ); + /* + * Free the TX list buffers. + */ + for (i = 0; i < XL_TX_LIST_CNT; i++) { + if (sc->xl_cdata.xl_tx_chain[i].xl_mbuf != NULL) { + bus_dmamap_unload(sc->xl_mtag, + sc->xl_cdata.xl_tx_chain[i].xl_map); + bus_dmamap_destroy(sc->xl_mtag, + sc->xl_cdata.xl_tx_chain[i].xl_map); + m_freem(sc->xl_cdata.xl_tx_chain[i].xl_mbuf); + sc->xl_cdata.xl_tx_chain[i].xl_mbuf = NULL; + } + } + if (sc->xl_ldata.xl_tx_list != NULL) + bzero(sc->xl_ldata.xl_tx_list, XL_TX_LIST_SZ); + + ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); +} + +/* + * Stop all chip I/O so that the kernel's probe routines don't + * get confused by errant DMAs when rebooting. + */ +static int +xl_shutdown(device_t dev) +{ + struct xl_softc *sc; + + sc = device_get_softc(dev); + + XL_LOCK(sc); + xl_reset(sc); + xl_stop(sc); + XL_UNLOCK(sc); + + return (0); +} + +static int +xl_suspend(device_t dev) +{ + struct xl_softc *sc; + + sc = device_get_softc(dev); + + XL_LOCK(sc); + xl_stop(sc); + XL_UNLOCK(sc); + + return (0); +} + +static int +xl_resume(device_t dev) +{ + struct xl_softc *sc; + struct ifnet *ifp; + + sc = device_get_softc(dev); + ifp = sc->xl_ifp; + + XL_LOCK(sc); + + xl_reset(sc); + if (ifp->if_flags & IFF_UP) + xl_init_locked(sc); + + XL_UNLOCK(sc); + + return (0); +} |