2 * Copyright (c) 1995, David Greenman
3 * Copyright (c) 2001 Jonathan Lemon <jlemon@freebsd.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice unmodified, this list of conditions, and the following
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * Intel EtherExpress Pro/100B PCI Fast Ethernet driver
35 #include <sys/param.h>
36 #include <sys/systm.h>
38 #include <sys/malloc.h>
39 /* #include <sys/mutex.h> */
40 #include <sys/kernel.h>
41 #include <sys/socket.h>
42 #include <sys/sysctl.h>
45 #include <net/if_dl.h>
46 #include <net/if_media.h>
50 #include <netns/ns_if.h>
54 #include <sys/sockio.h>
56 #include <machine/bus.h>
58 #include <machine/resource.h>
60 #include <net/ethernet.h>
61 #include <net/if_arp.h>
63 #include <vm/vm.h> /* for vtophys */
64 #include <vm/pmap.h> /* for vtophys */
65 #include <machine/clock.h> /* for DELAY */
67 #include <net/if_types.h>
68 #include <net/if_vlan_var.h>
70 #include <pci/pcivar.h>
71 #include <pci/pcireg.h> /* for PCIM_CMD_xxx */
73 #include <dev/mii/mii.h>
74 #include <dev/mii/miivar.h>
76 #include <dev/fxp/if_fxpreg.h>
77 #include <dev/fxp/if_fxpvar.h>
78 #include <dev/fxp/rcvbundl.h>
80 MODULE_DEPEND(fxp, miibus, 1, 1, 1);
81 #include "miibus_if.h"
84 * NOTE! On the Alpha, we have an alignment constraint. The
85 * card DMAs the packet immediately following the RFA. However,
86 * the first thing in the packet is a 14-byte Ethernet header.
87 * This means that the packet is misaligned. To compensate,
88 * we actually offset the RFA 2 bytes into the cluster. This
89 * alignes the packet after the Ethernet header at a 32-bit
90 * boundary. HOWEVER! This means that the RFA is misaligned!
92 #define RFA_ALIGNMENT_FUDGE 2
95 * Set initial transmit threshold at 64 (512 bytes). This is
96 * increased by 64 (512 bytes) at a time, to maximum of 192
97 * (1536 bytes), if an underrun occurs.
99 static int tx_threshold = 64;
102 * The configuration byte map has several undefined fields which
103 * must be one or must be zero. Set up a template for these bits
104 * only, (assuming a 82557 chip) leaving the actual configuration
107 * See struct fxp_cb_config for the bit definitions.
109 static u_char fxp_cb_config_template[] = {
110 0x0, 0x0, /* cb_status */
111 0x0, 0x0, /* cb_command */
112 0x0, 0x0, 0x0, 0x0, /* link_addr */
143 * Claim various Intel PCI device identifiers for this driver. The
144 * sub-vendor and sub-device field are extensively used to identify
145 * particular variants, but we don't currently differentiate between
148 static struct fxp_ident fxp_ident_table[] = {
149 { 0x1229, "Intel Pro 10/100B/100+ Ethernet" },
150 { 0x2449, "Intel Pro/100 Ethernet" },
151 { 0x1209, "Intel Embedded 10/100 Ethernet" },
152 { 0x1029, "Intel Pro/100 Ethernet" },
153 { 0x1030, "Intel Pro/100 Ethernet" },
154 { 0x1031, "Intel Pro/100 Ethernet" },
155 { 0x1032, "Intel Pro/100 Ethernet" },
156 { 0x1033, "Intel Pro/100 Ethernet" },
157 { 0x1034, "Intel Pro/100 Ethernet" },
158 { 0x1035, "Intel Pro/100 Ethernet" },
159 { 0x1036, "Intel Pro/100 Ethernet" },
160 { 0x1037, "Intel Pro/100 Ethernet" },
161 { 0x1038, "Intel Pro/100 Ethernet" },
162 { 0x1039, "Intel Pro/100 Ethernet" },
163 { 0x103A, "Intel Pro/100 Ethernet" },
167 static int fxp_probe(device_t dev);
168 static int fxp_attach(device_t dev);
169 static int fxp_detach(device_t dev);
170 static int fxp_shutdown(device_t dev);
171 static int fxp_suspend(device_t dev);
172 static int fxp_resume(device_t dev);
174 static void fxp_intr(void *xsc);
175 static void fxp_init(void *xsc);
176 static void fxp_tick(void *xsc);
177 static void fxp_powerstate_d0(device_t dev);
178 static void fxp_start(struct ifnet *ifp);
179 static void fxp_stop(struct fxp_softc *sc);
180 static void fxp_release(struct fxp_softc *sc);
181 static int fxp_ioctl(struct ifnet *ifp, u_long command,
183 static void fxp_watchdog(struct ifnet *ifp);
184 static int fxp_add_rfabuf(struct fxp_softc *sc, struct mbuf *oldm);
185 static int fxp_mc_addrs(struct fxp_softc *sc);
186 static void fxp_mc_setup(struct fxp_softc *sc);
187 static u_int16_t fxp_eeprom_getword(struct fxp_softc *sc, int offset,
189 static void fxp_eeprom_putword(struct fxp_softc *sc, int offset,
191 static void fxp_autosize_eeprom(struct fxp_softc *sc);
192 static void fxp_read_eeprom(struct fxp_softc *sc, u_short *data,
193 int offset, int words);
194 static void fxp_write_eeprom(struct fxp_softc *sc, u_short *data,
195 int offset, int words);
196 static int fxp_ifmedia_upd(struct ifnet *ifp);
197 static void fxp_ifmedia_sts(struct ifnet *ifp,
198 struct ifmediareq *ifmr);
199 static int fxp_serial_ifmedia_upd(struct ifnet *ifp);
200 static void fxp_serial_ifmedia_sts(struct ifnet *ifp,
201 struct ifmediareq *ifmr);
202 static volatile int fxp_miibus_readreg(device_t dev, int phy, int reg);
203 static void fxp_miibus_writereg(device_t dev, int phy, int reg,
205 static void fxp_load_ucode(struct fxp_softc *sc);
206 static int sysctl_int_range(SYSCTL_HANDLER_ARGS,
208 static int sysctl_hw_fxp_bundle_max(SYSCTL_HANDLER_ARGS);
209 static int sysctl_hw_fxp_int_delay(SYSCTL_HANDLER_ARGS);
210 static __inline void fxp_lwcopy(volatile u_int32_t *src,
211 volatile u_int32_t *dst);
212 static __inline void fxp_scb_wait(struct fxp_softc *sc);
213 static __inline void fxp_scb_cmd(struct fxp_softc *sc, int cmd);
214 static __inline void fxp_dma_wait(volatile u_int16_t *status,
215 struct fxp_softc *sc);
217 static device_method_t fxp_methods[] = {
218 /* Device interface */
219 DEVMETHOD(device_probe, fxp_probe),
220 DEVMETHOD(device_attach, fxp_attach),
221 DEVMETHOD(device_detach, fxp_detach),
222 DEVMETHOD(device_shutdown, fxp_shutdown),
223 DEVMETHOD(device_suspend, fxp_suspend),
224 DEVMETHOD(device_resume, fxp_resume),
227 DEVMETHOD(miibus_readreg, fxp_miibus_readreg),
228 DEVMETHOD(miibus_writereg, fxp_miibus_writereg),
233 static driver_t fxp_driver = {
236 sizeof(struct fxp_softc),
239 static devclass_t fxp_devclass;
241 DRIVER_MODULE(if_fxp, pci, fxp_driver, fxp_devclass, 0, 0);
242 DRIVER_MODULE(if_fxp, cardbus, fxp_driver, fxp_devclass, 0, 0);
243 DRIVER_MODULE(miibus, fxp, miibus_driver, miibus_devclass, 0, 0);
246 SYSCTL_INT(_hw, OID_AUTO, fxp_rnr, CTLFLAG_RW, &fxp_rnr, 0, "fxp rnr events");
249 * Inline function to copy a 16-bit aligned 32-bit quantity.
252 fxp_lwcopy(volatile u_int32_t *src, volatile u_int32_t *dst)
257 volatile u_int16_t *a = (volatile u_int16_t *)src;
258 volatile u_int16_t *b = (volatile u_int16_t *)dst;
266 * Wait for the previous command to be accepted (but not necessarily
270 fxp_scb_wait(struct fxp_softc *sc)
274 while (CSR_READ_1(sc, FXP_CSR_SCB_COMMAND) && --i)
277 device_printf(sc->dev, "SCB timeout: 0x%x 0x%x 0x%x 0x%x\n",
278 CSR_READ_1(sc, FXP_CSR_SCB_COMMAND),
279 CSR_READ_1(sc, FXP_CSR_SCB_STATACK),
280 CSR_READ_1(sc, FXP_CSR_SCB_RUSCUS),
281 CSR_READ_2(sc, FXP_CSR_FLOWCONTROL));
285 fxp_scb_cmd(struct fxp_softc *sc, int cmd)
288 if (cmd == FXP_SCB_COMMAND_CU_RESUME && sc->cu_resume_bug) {
289 CSR_WRITE_1(sc, FXP_CSR_SCB_COMMAND, FXP_CB_COMMAND_NOP);
292 CSR_WRITE_1(sc, FXP_CSR_SCB_COMMAND, cmd);
296 fxp_dma_wait(volatile u_int16_t *status, struct fxp_softc *sc)
300 while (!(*status & FXP_CB_STATUS_C) && --i)
303 device_printf(sc->dev, "DMA timeout\n");
307 * Return identification string if this is device is ours.
310 fxp_probe(device_t dev)
313 struct fxp_ident *ident;
315 if (pci_get_vendor(dev) == FXP_VENDORID_INTEL) {
316 devid = pci_get_device(dev);
317 for (ident = fxp_ident_table; ident->name != NULL; ident++) {
318 if (ident->devid == devid) {
319 device_set_desc(dev, ident->name);
328 fxp_powerstate_d0(device_t dev)
330 #if __FreeBSD_version >= 430002
331 u_int32_t iobase, membase, irq;
333 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
334 /* Save important PCI config data. */
335 iobase = pci_read_config(dev, FXP_PCI_IOBA, 4);
336 membase = pci_read_config(dev, FXP_PCI_MMBA, 4);
337 irq = pci_read_config(dev, PCIR_INTLINE, 4);
339 /* Reset the power state. */
340 device_printf(dev, "chip is in D%d power mode "
341 "-- setting to D0\n", pci_get_powerstate(dev));
343 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
345 /* Restore PCI config data. */
346 pci_write_config(dev, FXP_PCI_IOBA, iobase, 4);
347 pci_write_config(dev, FXP_PCI_MMBA, membase, 4);
348 pci_write_config(dev, PCIR_INTLINE, irq, 4);
354 fxp_attach(device_t dev)
357 struct fxp_softc *sc = device_get_softc(dev);
361 int i, rid, m1, m2, prefer_iomap;
364 bzero(sc, sizeof(*sc));
366 callout_handle_init(&sc->stat_ch);
367 sysctl_ctx_init(&sc->sysctl_ctx);
368 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
369 MTX_DEF | MTX_RECURSE);
374 * Enable bus mastering. Enable memory space too, in case
375 * BIOS/Prom forgot about it.
377 val = pci_read_config(dev, PCIR_COMMAND, 2);
378 val |= (PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN);
379 pci_write_config(dev, PCIR_COMMAND, val, 2);
380 val = pci_read_config(dev, PCIR_COMMAND, 2);
382 fxp_powerstate_d0(dev);
385 * Figure out which we should try first - memory mapping or i/o mapping?
386 * We default to memory mapping. Then we accept an override from the
387 * command line. Then we check to see which one is enabled.
390 m2 = PCIM_CMD_PORTEN;
392 if (resource_int_value(device_get_name(dev), device_get_unit(dev),
393 "prefer_iomap", &prefer_iomap) == 0 && prefer_iomap != 0) {
394 m1 = PCIM_CMD_PORTEN;
400 (m1 == PCIM_CMD_MEMEN)? SYS_RES_MEMORY : SYS_RES_IOPORT;
401 sc->rgd = (m1 == PCIM_CMD_MEMEN)? FXP_PCI_MMBA : FXP_PCI_IOBA;
402 sc->mem = bus_alloc_resource(dev, sc->rtp, &sc->rgd,
403 0, ~0, 1, RF_ACTIVE);
405 if (sc->mem == NULL && (val & m2)) {
407 (m2 == PCIM_CMD_MEMEN)? SYS_RES_MEMORY : SYS_RES_IOPORT;
408 sc->rgd = (m2 == PCIM_CMD_MEMEN)? FXP_PCI_MMBA : FXP_PCI_IOBA;
409 sc->mem = bus_alloc_resource(dev, sc->rtp, &sc->rgd,
410 0, ~0, 1, RF_ACTIVE);
414 device_printf(dev, "could not map device registers\n");
419 device_printf(dev, "using %s space register mapping\n",
420 sc->rtp == SYS_RES_MEMORY? "memory" : "I/O");
423 sc->sc_st = rman_get_bustag(sc->mem);
424 sc->sc_sh = rman_get_bushandle(sc->mem);
427 * Allocate our interrupt.
430 sc->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
431 RF_SHAREABLE | RF_ACTIVE);
432 if (sc->irq == NULL) {
433 device_printf(dev, "could not map interrupt\n");
438 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET,
439 fxp_intr, sc, &sc->ih);
441 device_printf(dev, "could not setup irq\n");
446 * Reset to a stable state.
448 CSR_WRITE_4(sc, FXP_CSR_PORT, FXP_PORT_SELECTIVE_RESET);
451 sc->cbl_base = malloc(sizeof(struct fxp_cb_tx) * FXP_NTXCB,
452 M_DEVBUF, M_NOWAIT | M_ZERO);
453 if (sc->cbl_base == NULL)
456 sc->fxp_stats = malloc(sizeof(struct fxp_stats), M_DEVBUF,
458 if (sc->fxp_stats == NULL)
461 sc->mcsp = malloc(sizeof(struct fxp_cb_mcs), M_DEVBUF, M_NOWAIT);
462 if (sc->mcsp == NULL)
466 * Pre-allocate our receive buffers.
468 for (i = 0; i < FXP_NRFABUFS; i++) {
469 if (fxp_add_rfabuf(sc, NULL) != 0) {
475 * Find out how large of an SEEPROM we have.
477 fxp_autosize_eeprom(sc);
480 * Determine whether we must use the 503 serial interface.
482 fxp_read_eeprom(sc, &data, 6, 1);
483 if ((data & FXP_PHY_DEVICE_MASK) != 0 &&
484 (data & FXP_PHY_SERIAL_ONLY))
485 sc->flags |= FXP_FLAG_SERIAL_MEDIA;
488 * Create the sysctl tree
490 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx,
491 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
492 device_get_nameunit(dev), CTLFLAG_RD, 0, "");
493 if (sc->sysctl_tree == NULL)
495 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
496 OID_AUTO, "int_delay", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_PRISON,
497 &sc->tunable_int_delay, 0, &sysctl_hw_fxp_int_delay, "I",
498 "FXP driver receive interrupt microcode bundling delay");
499 SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree),
500 OID_AUTO, "bundle_max", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_PRISON,
501 &sc->tunable_bundle_max, 0, &sysctl_hw_fxp_bundle_max, "I",
502 "FXP driver receive interrupt microcode bundle size limit");
505 * Pull in device tunables.
507 sc->tunable_int_delay = TUNABLE_INT_DELAY;
508 sc->tunable_bundle_max = TUNABLE_BUNDLE_MAX;
509 (void) resource_int_value(device_get_name(dev), device_get_unit(dev),
510 "int_delay", &sc->tunable_int_delay);
511 (void) resource_int_value(device_get_name(dev), device_get_unit(dev),
512 "bundle_max", &sc->tunable_bundle_max);
515 * Find out the chip revision; lump all 82557 revs together.
517 fxp_read_eeprom(sc, &data, 5, 1);
518 if ((data >> 8) == 1)
519 sc->revision = FXP_REV_82557;
521 sc->revision = pci_get_revid(dev);
524 * Enable workarounds for certain chip revision deficiencies.
526 * Systems based on the ICH2/ICH2-M chip from Intel, and possibly
527 * some systems based a normal 82559 design, have a defect where
528 * the chip can cause a PCI protocol violation if it receives
529 * a CU_RESUME command when it is entering the IDLE state. The
530 * workaround is to disable Dynamic Standby Mode, so the chip never
531 * deasserts CLKRUN#, and always remains in an active state.
533 * See Intel 82801BA/82801BAM Specification Update, Errata #30.
535 i = pci_get_device(dev);
536 if (i == 0x2449 || (i > 0x1030 && i < 0x1039) ||
537 sc->revision >= FXP_REV_82559_A0) {
538 fxp_read_eeprom(sc, &data, 10, 1);
539 if (data & 0x02) { /* STB enable */
544 "Disabling dynamic standby mode in EEPROM\n");
546 fxp_write_eeprom(sc, &data, 10, 1);
547 device_printf(dev, "New EEPROM ID: 0x%x\n", data);
549 for (i = 0; i < (1 << sc->eeprom_size) - 1; i++) {
550 fxp_read_eeprom(sc, &data, i, 1);
553 i = (1 << sc->eeprom_size) - 1;
554 cksum = 0xBABA - cksum;
555 fxp_read_eeprom(sc, &data, i, 1);
556 fxp_write_eeprom(sc, &cksum, i, 1);
558 "EEPROM checksum @ 0x%x: 0x%x -> 0x%x\n",
562 * If the user elects to continue, try the software
563 * workaround, as it is better than nothing.
565 sc->flags |= FXP_FLAG_CU_RESUME_BUG;
571 * If we are not a 82557 chip, we can enable extended features.
573 if (sc->revision != FXP_REV_82557) {
575 * If MWI is enabled in the PCI configuration, and there
576 * is a valid cacheline size (8 or 16 dwords), then tell
577 * the board to turn on MWI.
579 if (val & PCIM_CMD_MWRICEN &&
580 pci_read_config(dev, PCIR_CACHELNSZ, 1) != 0)
581 sc->flags |= FXP_FLAG_MWI_ENABLE;
583 /* turn on the extended TxCB feature */
584 sc->flags |= FXP_FLAG_EXT_TXCB;
586 /* enable reception of long frames for VLAN */
587 sc->flags |= FXP_FLAG_LONG_PKT_EN;
593 fxp_read_eeprom(sc, (u_int16_t *)sc->arpcom.ac_enaddr, 0, 3);
594 device_printf(dev, "Ethernet address %6D%s\n",
595 sc->arpcom.ac_enaddr, ":",
596 sc->flags & FXP_FLAG_SERIAL_MEDIA ? ", 10Mbps" : "");
598 device_printf(dev, "PCI IDs: %04x %04x %04x %04x %04x\n",
599 pci_get_vendor(dev), pci_get_device(dev),
600 pci_get_subvendor(dev), pci_get_subdevice(dev),
602 fxp_read_eeprom(sc, &data, 10, 1);
603 device_printf(dev, "Dynamic Standby mode is %s\n",
604 data & 0x02 ? "enabled" : "disabled");
608 * If this is only a 10Mbps device, then there is no MII, and
609 * the PHY will use a serial interface instead.
611 * The Seeq 80c24 AutoDUPLEX(tm) Ethernet Interface Adapter
612 * doesn't have a programming interface of any sort. The
613 * media is sensed automatically based on how the link partner
614 * is configured. This is, in essence, manual configuration.
616 if (sc->flags & FXP_FLAG_SERIAL_MEDIA) {
617 ifmedia_init(&sc->sc_media, 0, fxp_serial_ifmedia_upd,
618 fxp_serial_ifmedia_sts);
619 ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_MANUAL, 0, NULL);
620 ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_MANUAL);
622 if (mii_phy_probe(dev, &sc->miibus, fxp_ifmedia_upd,
624 device_printf(dev, "MII without any PHY!\n");
630 ifp = &sc->arpcom.ac_if;
631 ifp->if_unit = device_get_unit(dev);
632 ifp->if_name = "fxp";
633 ifp->if_output = ether_output;
634 ifp->if_baudrate = 100000000;
635 ifp->if_init = fxp_init;
637 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
638 ifp->if_ioctl = fxp_ioctl;
639 ifp->if_start = fxp_start;
640 ifp->if_watchdog = fxp_watchdog;
643 * Attach the interface.
645 ether_ifattach(ifp, ETHER_BPF_SUPPORTED);
648 * Tell the upper layer(s) we support long frames.
650 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
653 * Let the system queue as many packets as we have available
656 ifp->if_snd.ifq_maxlen = FXP_NTXCB - 1;
662 device_printf(dev, "Failed to malloc memory\n");
671 * release all resources
674 fxp_release(struct fxp_softc *sc)
677 bus_generic_detach(sc->dev);
679 device_delete_child(sc->dev, sc->miibus);
682 free(sc->cbl_base, M_DEVBUF);
684 free(sc->fxp_stats, M_DEVBUF);
686 free(sc->mcsp, M_DEVBUF);
688 m_freem(sc->rfa_headm);
691 bus_teardown_intr(sc->dev, sc->irq, sc->ih);
693 bus_release_resource(sc->dev, SYS_RES_IRQ, 0, sc->irq);
695 bus_release_resource(sc->dev, sc->rtp, sc->rgd, sc->mem);
697 sysctl_ctx_free(&sc->sysctl_ctx);
699 mtx_destroy(&sc->sc_mtx);
706 fxp_detach(device_t dev)
708 struct fxp_softc *sc = device_get_softc(dev);
711 /* disable interrupts */
712 CSR_WRITE_1(sc, FXP_CSR_SCB_INTRCNTL, FXP_SCB_INTR_DISABLE);
717 * Stop DMA and drop transmit queue.
722 * Close down routes etc.
724 ether_ifdetach(&sc->arpcom.ac_if, ETHER_BPF_SUPPORTED);
727 * Free all media structures.
729 ifmedia_removeall(&sc->sc_media);
733 /* Release our allocated resources. */
740 * Device shutdown routine. Called at system shutdown after sync. The
741 * main purpose of this routine is to shut off receiver DMA so that
742 * kernel memory doesn't get clobbered during warmboot.
745 fxp_shutdown(device_t dev)
748 * Make sure that DMA is disabled prior to reboot. Not doing
749 * do could allow DMA to corrupt kernel memory during the
750 * reboot before the driver initializes.
752 fxp_stop((struct fxp_softc *) device_get_softc(dev));
757 * Device suspend routine. Stop the interface and save some PCI
758 * settings in case the BIOS doesn't restore them properly on
762 fxp_suspend(device_t dev)
764 struct fxp_softc *sc = device_get_softc(dev);
771 for (i = 0; i < 5; i++)
772 sc->saved_maps[i] = pci_read_config(dev, PCIR_MAPS + i * 4, 4);
773 sc->saved_biosaddr = pci_read_config(dev, PCIR_BIOS, 4);
774 sc->saved_intline = pci_read_config(dev, PCIR_INTLINE, 1);
775 sc->saved_cachelnsz = pci_read_config(dev, PCIR_CACHELNSZ, 1);
776 sc->saved_lattimer = pci_read_config(dev, PCIR_LATTIMER, 1);
785 * Device resume routine. Restore some PCI settings in case the BIOS
786 * doesn't, re-enable busmastering, and restart the interface if
790 fxp_resume(device_t dev)
792 struct fxp_softc *sc = device_get_softc(dev);
793 struct ifnet *ifp = &sc->sc_if;
794 u_int16_t pci_command;
799 fxp_powerstate_d0(dev);
801 /* better way to do this? */
802 for (i = 0; i < 5; i++)
803 pci_write_config(dev, PCIR_MAPS + i * 4, sc->saved_maps[i], 4);
804 pci_write_config(dev, PCIR_BIOS, sc->saved_biosaddr, 4);
805 pci_write_config(dev, PCIR_INTLINE, sc->saved_intline, 1);
806 pci_write_config(dev, PCIR_CACHELNSZ, sc->saved_cachelnsz, 1);
807 pci_write_config(dev, PCIR_LATTIMER, sc->saved_lattimer, 1);
809 /* reenable busmastering */
810 pci_command = pci_read_config(dev, PCIR_COMMAND, 2);
811 pci_command |= (PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN);
812 pci_write_config(dev, PCIR_COMMAND, pci_command, 2);
814 CSR_WRITE_4(sc, FXP_CSR_PORT, FXP_PORT_SELECTIVE_RESET);
817 /* reinitialize interface if necessary */
818 if (ifp->if_flags & IFF_UP)
828 fxp_eeprom_shiftin(struct fxp_softc *sc, int data, int length)
836 for (x = 1 << (length - 1); x; x >>= 1) {
838 reg = FXP_EEPROM_EECS | FXP_EEPROM_EEDI;
840 reg = FXP_EEPROM_EECS;
841 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg);
843 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg | FXP_EEPROM_EESK);
845 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg);
851 * Read from the serial EEPROM. Basically, you manually shift in
852 * the read opcode (one bit at a time) and then shift in the address,
853 * and then you shift out the data (all of this one bit at a time).
854 * The word size is 16 bits, so you have to provide the address for
855 * every 16 bits of data.
858 fxp_eeprom_getword(struct fxp_softc *sc, int offset, int autosize)
863 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, FXP_EEPROM_EECS);
865 * Shift in read opcode.
867 fxp_eeprom_shiftin(sc, FXP_EEPROM_OPC_READ, 3);
872 for (x = 1 << (sc->eeprom_size - 1); x; x >>= 1) {
874 reg = FXP_EEPROM_EECS | FXP_EEPROM_EEDI;
876 reg = FXP_EEPROM_EECS;
877 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg);
879 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg | FXP_EEPROM_EESK);
881 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg);
883 reg = CSR_READ_2(sc, FXP_CSR_EEPROMCONTROL) & FXP_EEPROM_EEDO;
885 if (autosize && reg == 0) {
886 sc->eeprom_size = data;
894 reg = FXP_EEPROM_EECS;
895 for (x = 1 << 15; x; x >>= 1) {
896 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg | FXP_EEPROM_EESK);
898 if (CSR_READ_2(sc, FXP_CSR_EEPROMCONTROL) & FXP_EEPROM_EEDO)
900 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg);
903 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, 0);
910 fxp_eeprom_putword(struct fxp_softc *sc, int offset, u_int16_t data)
915 * Erase/write enable.
917 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, FXP_EEPROM_EECS);
918 fxp_eeprom_shiftin(sc, 0x4, 3);
919 fxp_eeprom_shiftin(sc, 0x03 << (sc->eeprom_size - 2), sc->eeprom_size);
920 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, 0);
923 * Shift in write opcode, address, data.
925 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, FXP_EEPROM_EECS);
926 fxp_eeprom_shiftin(sc, FXP_EEPROM_OPC_WRITE, 3);
927 fxp_eeprom_shiftin(sc, offset, sc->eeprom_size);
928 fxp_eeprom_shiftin(sc, data, 16);
929 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, 0);
932 * Wait for EEPROM to finish up.
934 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, FXP_EEPROM_EECS);
936 for (i = 0; i < 1000; i++) {
937 if (CSR_READ_2(sc, FXP_CSR_EEPROMCONTROL) & FXP_EEPROM_EEDO)
941 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, 0);
944 * Erase/write disable.
946 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, FXP_EEPROM_EECS);
947 fxp_eeprom_shiftin(sc, 0x4, 3);
948 fxp_eeprom_shiftin(sc, 0, sc->eeprom_size);
949 CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, 0);
956 * Figure out EEPROM size.
958 * 559's can have either 64-word or 256-word EEPROMs, the 558
959 * datasheet only talks about 64-word EEPROMs, and the 557 datasheet
960 * talks about the existance of 16 to 256 word EEPROMs.
962 * The only known sizes are 64 and 256, where the 256 version is used
963 * by CardBus cards to store CIS information.
965 * The address is shifted in msb-to-lsb, and after the last
966 * address-bit the EEPROM is supposed to output a `dummy zero' bit,
967 * after which follows the actual data. We try to detect this zero, by
968 * probing the data-out bit in the EEPROM control register just after
969 * having shifted in a bit. If the bit is zero, we assume we've
970 * shifted enough address bits. The data-out should be tri-state,
971 * before this, which should translate to a logical one.
974 fxp_autosize_eeprom(struct fxp_softc *sc)
977 /* guess maximum size of 256 words */
981 (void) fxp_eeprom_getword(sc, 0, 1);
985 fxp_read_eeprom(struct fxp_softc *sc, u_short *data, int offset, int words)
989 for (i = 0; i < words; i++)
990 data[i] = fxp_eeprom_getword(sc, offset + i, 0);
994 fxp_write_eeprom(struct fxp_softc *sc, u_short *data, int offset, int words)
998 for (i = 0; i < words; i++)
999 fxp_eeprom_putword(sc, offset + i, data[i]);
1003 * Start packet transmission on the interface.
1006 fxp_start(struct ifnet *ifp)
1008 struct fxp_softc *sc = ifp->if_softc;
1009 struct fxp_cb_tx *txp;
1012 * See if we need to suspend xmit until the multicast filter
1013 * has been reprogrammed (which can only be done at the head
1014 * of the command chain).
1016 if (sc->need_mcsetup) {
1023 * We're finished if there is nothing more to add to the list or if
1024 * we're all filled up with buffers to transmit.
1025 * NOTE: One TxCB is reserved to guarantee that fxp_mc_setup() can add
1026 * a NOP command when needed.
1028 while (ifp->if_snd.ifq_head != NULL && sc->tx_queued < FXP_NTXCB - 1) {
1029 struct mbuf *m, *mb_head;
1033 * Grab a packet to transmit.
1035 IF_DEQUEUE(&ifp->if_snd, mb_head);
1038 * Get pointer to next available tx desc.
1040 txp = sc->cbl_last->next;
1043 * Go through each of the mbufs in the chain and initialize
1044 * the transmit buffer descriptors with the physical address
1045 * and size of the mbuf.
1048 for (m = mb_head, segment = 0; m != NULL; m = m->m_next) {
1049 if (m->m_len != 0) {
1050 if (segment == FXP_NTXSEG)
1052 txp->tbd[segment].tb_addr =
1053 vtophys(mtod(m, vm_offset_t));
1054 txp->tbd[segment].tb_size = m->m_len;
1062 * We ran out of segments. We have to recopy this
1063 * mbuf chain first. Bail out if we can't get the
1066 MGETHDR(mn, M_DONTWAIT, MT_DATA);
1071 if (mb_head->m_pkthdr.len > MHLEN) {
1072 MCLGET(mn, M_DONTWAIT);
1073 if ((mn->m_flags & M_EXT) == 0) {
1079 m_copydata(mb_head, 0, mb_head->m_pkthdr.len,
1081 mn->m_pkthdr.len = mn->m_len = mb_head->m_pkthdr.len;
1087 txp->tbd_number = segment;
1088 txp->mb_head = mb_head;
1090 if (sc->tx_queued != FXP_CXINT_THRESH - 1) {
1092 FXP_CB_COMMAND_XMIT | FXP_CB_COMMAND_SF |
1096 FXP_CB_COMMAND_XMIT | FXP_CB_COMMAND_SF |
1097 FXP_CB_COMMAND_S | FXP_CB_COMMAND_I;
1099 * Set a 5 second timer just in case we don't hear
1100 * from the card again.
1104 txp->tx_threshold = tx_threshold;
1107 * Advance the end of list forward.
1112 * On platforms which can't access memory in 16-bit
1113 * granularities, we must prevent the card from DMA'ing
1114 * up the status while we update the command field.
1115 * This could cause us to overwrite the completion status.
1117 atomic_clear_short(&sc->cbl_last->cb_command,
1120 sc->cbl_last->cb_command &= ~FXP_CB_COMMAND_S;
1121 #endif /*__alpha__*/
1125 * Advance the beginning of the list forward if there are
1126 * no other packets queued (when nothing is queued, cbl_first
1127 * sits on the last TxCB that was sent out).
1129 if (sc->tx_queued == 0)
1130 sc->cbl_first = txp;
1135 * Pass packet to bpf if there is a listener.
1138 bpf_mtap(ifp, mb_head);
1142 * We're finished. If we added to the list, issue a RESUME to get DMA
1143 * going again if suspended.
1147 fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_RESUME);
1151 static void fxp_intr_body(struct fxp_softc *sc, u_int8_t statack, int count);
1153 #ifdef DEVICE_POLLING
1154 static poll_handler_t fxp_poll;
1157 fxp_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
1159 struct fxp_softc *sc = ifp->if_softc;
1162 if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */
1163 CSR_WRITE_1(sc, FXP_CSR_SCB_INTRCNTL, 0);
1166 statack = FXP_SCB_STATACK_CXTNO | FXP_SCB_STATACK_CNA |
1168 if (cmd == POLL_AND_CHECK_STATUS) {
1171 tmp = CSR_READ_1(sc, FXP_CSR_SCB_STATACK);
1172 if (tmp == 0xff || tmp == 0)
1173 return; /* nothing to do */
1175 /* ack what we can */
1177 CSR_WRITE_1(sc, FXP_CSR_SCB_STATACK, tmp);
1180 fxp_intr_body(sc, statack, count);
1182 #endif /* DEVICE_POLLING */
1185 * Process interface interrupts.
1190 struct fxp_softc *sc = xsc;
1193 #ifdef DEVICE_POLLING
1194 struct ifnet *ifp = &sc->sc_if;
1196 if (ifp->if_flags & IFF_POLLING)
1198 if (ether_poll_register(fxp_poll, ifp)) {
1199 /* disable interrupts */
1200 CSR_WRITE_1(sc, FXP_CSR_SCB_INTRCNTL, FXP_SCB_INTR_DISABLE);
1201 fxp_poll(ifp, 0, 1);
1206 if (sc->suspended) {
1210 while ((statack = CSR_READ_1(sc, FXP_CSR_SCB_STATACK)) != 0) {
1212 * It should not be possible to have all bits set; the
1213 * FXP_SCB_INTR_SWI bit always returns 0 on a read. If
1214 * all bits are set, this may indicate that the card has
1215 * been physically ejected, so ignore it.
1217 if (statack == 0xff)
1221 * First ACK all the interrupts in this pass.
1223 CSR_WRITE_1(sc, FXP_CSR_SCB_STATACK, statack);
1224 fxp_intr_body(sc, statack, -1);
1229 fxp_intr_body(struct fxp_softc *sc, u_int8_t statack, int count)
1231 struct ifnet *ifp = &sc->sc_if;
1233 struct fxp_rfa *rfa;
1234 int rnr = (statack & FXP_SCB_STATACK_RNR) ? 1 : 0;
1240 * Free any finished transmit mbuf chains.
1242 * Handle the CNA event likt a CXTNO event. It used to
1243 * be that this event (control unit not ready) was not
1244 * encountered, but it is now with the SMPng modifications.
1245 * The exact sequence of events that occur when the interface
1246 * is brought up are different now, and if this event
1247 * goes unhandled, the configuration/rxfilter setup sequence
1248 * can stall for several seconds. The result is that no
1249 * packets go out onto the wire for about 5 to 10 seconds
1250 * after the interface is ifconfig'ed for the first time.
1252 if (statack & (FXP_SCB_STATACK_CXTNO | FXP_SCB_STATACK_CNA)) {
1253 struct fxp_cb_tx *txp;
1255 for (txp = sc->cbl_first; sc->tx_queued &&
1256 (txp->cb_status & FXP_CB_STATUS_C) != 0;
1258 if (txp->mb_head != NULL) {
1259 m_freem(txp->mb_head);
1260 txp->mb_head = NULL;
1264 sc->cbl_first = txp;
1266 if (sc->tx_queued == 0) {
1267 if (sc->need_mcsetup)
1271 * Try to start more packets transmitting.
1273 if (ifp->if_snd.ifq_head != NULL)
1278 * Just return if nothing happened on the receive side.
1280 if ( (statack & (FXP_SCB_STATACK_FR | FXP_SCB_STATACK_RNR)) == 0)
1284 * Process receiver interrupts. If a no-resource (RNR)
1285 * condition exists, get whatever packets we can and
1286 * re-start the receiver.
1287 * When using polling, we do not process the list to completion,
1288 * so when we get an RNR interrupt we must defer the restart
1289 * until we hit the last buffer with the C bit set.
1290 * If we run out of cycles and rfa_headm has the C bit set,
1291 * record the pending RNR in an unused status bit, so that the
1292 * info will be used in the subsequent polling cycle.
1295 #define FXP_RFA_RNRMARK 0x4000 /* used to mark a pending RNR intr */
1299 rfa = (struct fxp_rfa *)(m->m_ext.ext_buf +
1300 RFA_ALIGNMENT_FUDGE);
1302 #ifdef DEVICE_POLLING /* loop at most count times if count >=0 */
1303 if (count >= 0 && count-- == 0)
1305 #endif /* DEVICE_POLLING */
1307 if ( (rfa->rfa_status & FXP_RFA_STATUS_C) == 0)
1310 if (rfa->rfa_status & FXP_RFA_RNRMARK)
1313 * Remove first packet from the chain.
1315 sc->rfa_headm = m->m_next;
1319 * Add a new buffer to the receive chain.
1320 * If this fails, the old buffer is recycled
1323 if (fxp_add_rfabuf(sc, m) == 0) {
1327 * Fetch packet length (the top 2 bits of
1328 * actual_size are flags set by the controller
1329 * upon completion), and drop the packet in case
1330 * of bogus length or CRC errors.
1332 total_len = rfa->actual_size & 0x3fff;
1333 if (total_len < sizeof(struct ether_header) ||
1334 total_len > MCLBYTES - RFA_ALIGNMENT_FUDGE -
1335 sizeof(struct fxp_rfa) ||
1336 rfa->rfa_status & FXP_RFA_STATUS_CRC) {
1341 m->m_pkthdr.len = m->m_len = total_len;
1342 ether_input(ifp, NULL, m);
1346 if (rfa->rfa_status & FXP_RFA_STATUS_C)
1347 rfa->rfa_status |= FXP_RFA_RNRMARK;
1350 CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL,
1351 vtophys(sc->rfa_headm->m_ext.ext_buf) +
1352 RFA_ALIGNMENT_FUDGE);
1353 fxp_scb_cmd(sc, FXP_SCB_COMMAND_RU_START);
1359 * Update packet in/out/collision statistics. The i82557 doesn't
1360 * allow you to access these counters without doing a fairly
1361 * expensive DMA to get _all_ of the statistics it maintains, so
1362 * we do this operation here only once per second. The statistics
1363 * counters in the kernel are updated from the previous dump-stats
1364 * DMA and then a new dump-stats DMA is started. The on-chip
1365 * counters are zeroed when the DMA completes. If we can't start
1366 * the DMA immediately, we don't wait - we just prepare to read
1367 * them again next time.
1372 struct fxp_softc *sc = xsc;
1373 struct ifnet *ifp = &sc->sc_if;
1374 struct fxp_stats *sp = sc->fxp_stats;
1375 struct fxp_cb_tx *txp;
1378 ifp->if_opackets += sp->tx_good;
1379 ifp->if_collisions += sp->tx_total_collisions;
1381 ifp->if_ipackets += sp->rx_good;
1382 sc->rx_idle_secs = 0;
1385 * Receiver's been idle for another second.
1391 sp->rx_alignment_errors +
1393 sp->rx_overrun_errors;
1395 * If any transmit underruns occured, bump up the transmit
1396 * threshold by another 512 bytes (64 * 8).
1398 if (sp->tx_underruns) {
1399 ifp->if_oerrors += sp->tx_underruns;
1400 if (tx_threshold < 192)
1405 * Release any xmit buffers that have completed DMA. This isn't
1406 * strictly necessary to do here, but it's advantagous for mbufs
1407 * with external storage to be released in a timely manner rather
1408 * than being defered for a potentially long time. This limits
1409 * the delay to a maximum of one second.
1411 for (txp = sc->cbl_first; sc->tx_queued &&
1412 (txp->cb_status & FXP_CB_STATUS_C) != 0;
1414 if (txp->mb_head != NULL) {
1415 m_freem(txp->mb_head);
1416 txp->mb_head = NULL;
1420 sc->cbl_first = txp;
1422 * If we haven't received any packets in FXP_MAC_RX_IDLE seconds,
1423 * then assume the receiver has locked up and attempt to clear
1424 * the condition by reprogramming the multicast filter. This is
1425 * a work-around for a bug in the 82557 where the receiver locks
1426 * up if it gets certain types of garbage in the syncronization
1427 * bits prior to the packet header. This bug is supposed to only
1428 * occur in 10Mbps mode, but has been seen to occur in 100Mbps
1429 * mode as well (perhaps due to a 10/100 speed transition).
1431 if (sc->rx_idle_secs > FXP_MAX_RX_IDLE) {
1432 sc->rx_idle_secs = 0;
1436 * If there is no pending command, start another stats
1437 * dump. Otherwise punt for now.
1439 if (CSR_READ_1(sc, FXP_CSR_SCB_COMMAND) == 0) {
1441 * Start another stats dump.
1443 fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_DUMPRESET);
1446 * A previous command is still waiting to be accepted.
1447 * Just zero our copy of the stats and wait for the
1448 * next timer event to update them.
1451 sp->tx_underruns = 0;
1452 sp->tx_total_collisions = 0;
1455 sp->rx_crc_errors = 0;
1456 sp->rx_alignment_errors = 0;
1457 sp->rx_rnr_errors = 0;
1458 sp->rx_overrun_errors = 0;
1460 if (sc->miibus != NULL)
1461 mii_tick(device_get_softc(sc->miibus));
1464 * Schedule another timeout one second from now.
1466 sc->stat_ch = timeout(fxp_tick, sc, hz);
1470 * Stop the interface. Cancels the statistics updater and resets
1474 fxp_stop(struct fxp_softc *sc)
1476 struct ifnet *ifp = &sc->sc_if;
1477 struct fxp_cb_tx *txp;
1480 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
1483 #ifdef DEVICE_POLLING
1484 ether_poll_deregister(ifp);
1487 * Cancel stats updater.
1489 untimeout(fxp_tick, sc, sc->stat_ch);
1492 * Issue software reset, which also unloads the microcode.
1494 sc->flags &= ~FXP_FLAG_UCODE;
1495 CSR_WRITE_4(sc, FXP_CSR_PORT, FXP_PORT_SOFTWARE_RESET);
1499 * Release any xmit buffers.
1503 for (i = 0; i < FXP_NTXCB; i++) {
1504 if (txp[i].mb_head != NULL) {
1505 m_freem(txp[i].mb_head);
1506 txp[i].mb_head = NULL;
1513 * Free all the receive buffers then reallocate/reinitialize
1515 if (sc->rfa_headm != NULL)
1516 m_freem(sc->rfa_headm);
1517 sc->rfa_headm = NULL;
1518 sc->rfa_tailm = NULL;
1519 for (i = 0; i < FXP_NRFABUFS; i++) {
1520 if (fxp_add_rfabuf(sc, NULL) != 0) {
1522 * This "can't happen" - we're at splimp()
1523 * and we just freed all the buffers we need
1526 panic("fxp_stop: no buffers!");
1532 * Watchdog/transmission transmit timeout handler. Called when a
1533 * transmission is started on the interface, but no interrupt is
1534 * received before the timeout. This usually indicates that the
1535 * card has wedged for some reason.
1538 fxp_watchdog(struct ifnet *ifp)
1540 struct fxp_softc *sc = ifp->if_softc;
1542 device_printf(sc->dev, "device timeout\n");
1551 struct fxp_softc *sc = xsc;
1552 struct ifnet *ifp = &sc->sc_if;
1553 struct fxp_cb_config *cbp;
1554 struct fxp_cb_ias *cb_ias;
1555 struct fxp_cb_tx *txp;
1556 struct fxp_cb_mcs *mcsp;
1561 * Cancel any pending I/O
1565 prm = (ifp->if_flags & IFF_PROMISC) ? 1 : 0;
1568 * Initialize base of CBL and RFA memory. Loading with zero
1569 * sets it up for regular linear addressing.
1571 CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, 0);
1572 fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_BASE);
1575 fxp_scb_cmd(sc, FXP_SCB_COMMAND_RU_BASE);
1578 * Initialize base of dump-stats buffer.
1581 CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, vtophys(sc->fxp_stats));
1582 fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_DUMP_ADR);
1585 * Attempt to load microcode if requested.
1587 if (ifp->if_flags & IFF_LINK0 && (sc->flags & FXP_FLAG_UCODE) == 0)
1591 * Initialize the multicast address list.
1593 if (fxp_mc_addrs(sc)) {
1595 mcsp->cb_status = 0;
1596 mcsp->cb_command = FXP_CB_COMMAND_MCAS | FXP_CB_COMMAND_EL;
1597 mcsp->link_addr = -1;
1599 * Start the multicast setup command.
1602 CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, vtophys(&mcsp->cb_status));
1603 fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_START);
1604 /* ...and wait for it to complete. */
1605 fxp_dma_wait(&mcsp->cb_status, sc);
1609 * We temporarily use memory that contains the TxCB list to
1610 * construct the config CB. The TxCB list memory is rebuilt
1613 cbp = (struct fxp_cb_config *) sc->cbl_base;
1616 * This bcopy is kind of disgusting, but there are a bunch of must be
1617 * zero and must be one bits in this structure and this is the easiest
1618 * way to initialize them all to proper values.
1620 bcopy(fxp_cb_config_template,
1621 (void *)(uintptr_t)(volatile void *)&cbp->cb_status,
1622 sizeof(fxp_cb_config_template));
1625 cbp->cb_command = FXP_CB_COMMAND_CONFIG | FXP_CB_COMMAND_EL;
1626 cbp->link_addr = -1; /* (no) next command */
1627 cbp->byte_count = 22; /* (22) bytes to config */
1628 cbp->rx_fifo_limit = 8; /* rx fifo threshold (32 bytes) */
1629 cbp->tx_fifo_limit = 0; /* tx fifo threshold (0 bytes) */
1630 cbp->adaptive_ifs = 0; /* (no) adaptive interframe spacing */
1631 cbp->mwi_enable = sc->flags & FXP_FLAG_MWI_ENABLE ? 1 : 0;
1632 cbp->type_enable = 0; /* actually reserved */
1633 cbp->read_align_en = sc->flags & FXP_FLAG_READ_ALIGN ? 1 : 0;
1634 cbp->end_wr_on_cl = sc->flags & FXP_FLAG_WRITE_ALIGN ? 1 : 0;
1635 cbp->rx_dma_bytecount = 0; /* (no) rx DMA max */
1636 cbp->tx_dma_bytecount = 0; /* (no) tx DMA max */
1637 cbp->dma_mbce = 0; /* (disable) dma max counters */
1638 cbp->late_scb = 0; /* (don't) defer SCB update */
1639 cbp->direct_dma_dis = 1; /* disable direct rcv dma mode */
1640 cbp->tno_int_or_tco_en =0; /* (disable) tx not okay interrupt */
1641 cbp->ci_int = 1; /* interrupt on CU idle */
1642 cbp->ext_txcb_dis = sc->flags & FXP_FLAG_EXT_TXCB ? 0 : 1;
1643 cbp->ext_stats_dis = 1; /* disable extended counters */
1644 cbp->keep_overrun_rx = 0; /* don't pass overrun frames to host */
1645 cbp->save_bf = sc->revision == FXP_REV_82557 ? 1 : prm;
1646 cbp->disc_short_rx = !prm; /* discard short packets */
1647 cbp->underrun_retry = 1; /* retry mode (once) on DMA underrun */
1648 cbp->two_frames = 0; /* do not limit FIFO to 2 frames */
1649 cbp->dyn_tbd = 0; /* (no) dynamic TBD mode */
1650 cbp->mediatype = sc->flags & FXP_FLAG_SERIAL_MEDIA ? 0 : 1;
1651 cbp->csma_dis = 0; /* (don't) disable link */
1652 cbp->tcp_udp_cksum = 0; /* (don't) enable checksum */
1653 cbp->vlan_tco = 0; /* (don't) enable vlan wakeup */
1654 cbp->link_wake_en = 0; /* (don't) assert PME# on link change */
1655 cbp->arp_wake_en = 0; /* (don't) assert PME# on arp */
1656 cbp->mc_wake_en = 0; /* (don't) enable PME# on mcmatch */
1657 cbp->nsai = 1; /* (don't) disable source addr insert */
1658 cbp->preamble_length = 2; /* (7 byte) preamble */
1659 cbp->loopback = 0; /* (don't) loopback */
1660 cbp->linear_priority = 0; /* (normal CSMA/CD operation) */
1661 cbp->linear_pri_mode = 0; /* (wait after xmit only) */
1662 cbp->interfrm_spacing = 6; /* (96 bits of) interframe spacing */
1663 cbp->promiscuous = prm; /* promiscuous mode */
1664 cbp->bcast_disable = 0; /* (don't) disable broadcasts */
1665 cbp->wait_after_win = 0; /* (don't) enable modified backoff alg*/
1666 cbp->ignore_ul = 0; /* consider U/L bit in IA matching */
1667 cbp->crc16_en = 0; /* (don't) enable crc-16 algorithm */
1668 cbp->crscdt = sc->flags & FXP_FLAG_SERIAL_MEDIA ? 1 : 0;
1670 cbp->stripping = !prm; /* truncate rx packet to byte count */
1671 cbp->padding = 1; /* (do) pad short tx packets */
1672 cbp->rcv_crc_xfer = 0; /* (don't) xfer CRC to host */
1673 cbp->long_rx_en = sc->flags & FXP_FLAG_LONG_PKT_EN ? 1 : 0;
1674 cbp->ia_wake_en = 0; /* (don't) wake up on address match */
1675 cbp->magic_pkt_dis = 0; /* (don't) disable magic packet */
1676 /* must set wake_en in PMCSR also */
1677 cbp->force_fdx = 0; /* (don't) force full duplex */
1678 cbp->fdx_pin_en = 1; /* (enable) FDX# pin */
1679 cbp->multi_ia = 0; /* (don't) accept multiple IAs */
1680 cbp->mc_all = sc->flags & FXP_FLAG_ALL_MCAST ? 1 : 0;
1682 if (sc->revision == FXP_REV_82557) {
1684 * The 82557 has no hardware flow control, the values
1685 * below are the defaults for the chip.
1687 cbp->fc_delay_lsb = 0;
1688 cbp->fc_delay_msb = 0x40;
1689 cbp->pri_fc_thresh = 3;
1691 cbp->rx_fc_restop = 0;
1692 cbp->rx_fc_restart = 0;
1694 cbp->pri_fc_loc = 1;
1696 cbp->fc_delay_lsb = 0x1f;
1697 cbp->fc_delay_msb = 0x01;
1698 cbp->pri_fc_thresh = 3;
1699 cbp->tx_fc_dis = 0; /* enable transmit FC */
1700 cbp->rx_fc_restop = 1; /* enable FC restop frames */
1701 cbp->rx_fc_restart = 1; /* enable FC restart frames */
1702 cbp->fc_filter = !prm; /* drop FC frames to host */
1703 cbp->pri_fc_loc = 1; /* FC pri location (byte31) */
1707 * Start the config command/DMA.
1710 CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, vtophys(&cbp->cb_status));
1711 fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_START);
1712 /* ...and wait for it to complete. */
1713 fxp_dma_wait(&cbp->cb_status, sc);
1716 * Now initialize the station address. Temporarily use the TxCB
1717 * memory area like we did above for the config CB.
1719 cb_ias = (struct fxp_cb_ias *) sc->cbl_base;
1720 cb_ias->cb_status = 0;
1721 cb_ias->cb_command = FXP_CB_COMMAND_IAS | FXP_CB_COMMAND_EL;
1722 cb_ias->link_addr = -1;
1723 bcopy(sc->arpcom.ac_enaddr,
1724 (void *)(uintptr_t)(volatile void *)cb_ias->macaddr,
1725 sizeof(sc->arpcom.ac_enaddr));
1728 * Start the IAS (Individual Address Setup) command/DMA.
1731 fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_START);
1732 /* ...and wait for it to complete. */
1733 fxp_dma_wait(&cb_ias->cb_status, sc);
1736 * Initialize transmit control block (TxCB) list.
1740 bzero(txp, sizeof(struct fxp_cb_tx) * FXP_NTXCB);
1741 for (i = 0; i < FXP_NTXCB; i++) {
1742 txp[i].cb_status = FXP_CB_STATUS_C | FXP_CB_STATUS_OK;
1743 txp[i].cb_command = FXP_CB_COMMAND_NOP;
1745 vtophys(&txp[(i + 1) & FXP_TXCB_MASK].cb_status);
1746 if (sc->flags & FXP_FLAG_EXT_TXCB)
1747 txp[i].tbd_array_addr = vtophys(&txp[i].tbd[2]);
1749 txp[i].tbd_array_addr = vtophys(&txp[i].tbd[0]);
1750 txp[i].next = &txp[(i + 1) & FXP_TXCB_MASK];
1753 * Set the suspend flag on the first TxCB and start the control
1754 * unit. It will execute the NOP and then suspend.
1756 txp->cb_command = FXP_CB_COMMAND_NOP | FXP_CB_COMMAND_S;
1757 sc->cbl_first = sc->cbl_last = txp;
1761 fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_START);
1764 * Initialize receiver buffer area - RFA.
1767 CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL,
1768 vtophys(sc->rfa_headm->m_ext.ext_buf) + RFA_ALIGNMENT_FUDGE);
1769 fxp_scb_cmd(sc, FXP_SCB_COMMAND_RU_START);
1772 * Set current media.
1774 if (sc->miibus != NULL)
1775 mii_mediachg(device_get_softc(sc->miibus));
1777 ifp->if_flags |= IFF_RUNNING;
1778 ifp->if_flags &= ~IFF_OACTIVE;
1781 * Enable interrupts.
1783 #ifdef DEVICE_POLLING
1785 * ... but only do that if we are not polling. And because (presumably)
1786 * the default is interrupts on, we need to disable them explicitly!
1788 if ( ifp->if_flags & IFF_POLLING )
1789 CSR_WRITE_1(sc, FXP_CSR_SCB_INTRCNTL, FXP_SCB_INTR_DISABLE);
1791 #endif /* DEVICE_POLLING */
1792 CSR_WRITE_1(sc, FXP_CSR_SCB_INTRCNTL, 0);
1796 * Start stats updater.
1798 sc->stat_ch = timeout(fxp_tick, sc, hz);
1802 fxp_serial_ifmedia_upd(struct ifnet *ifp)
1809 fxp_serial_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
1812 ifmr->ifm_active = IFM_ETHER|IFM_MANUAL;
1816 * Change media according to request.
1819 fxp_ifmedia_upd(struct ifnet *ifp)
1821 struct fxp_softc *sc = ifp->if_softc;
1822 struct mii_data *mii;
1824 mii = device_get_softc(sc->miibus);
1830 * Notify the world which media we're using.
1833 fxp_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
1835 struct fxp_softc *sc = ifp->if_softc;
1836 struct mii_data *mii;
1838 mii = device_get_softc(sc->miibus);
1840 ifmr->ifm_active = mii->mii_media_active;
1841 ifmr->ifm_status = mii->mii_media_status;
1843 if (ifmr->ifm_status & IFM_10_T && sc->flags & FXP_FLAG_CU_RESUME_BUG)
1844 sc->cu_resume_bug = 1;
1846 sc->cu_resume_bug = 0;
1850 * Add a buffer to the end of the RFA buffer list.
1851 * Return 0 if successful, 1 for failure. A failure results in
1852 * adding the 'oldm' (if non-NULL) on to the end of the list -
1853 * tossing out its old contents and recycling it.
1854 * The RFA struct is stuck at the beginning of mbuf cluster and the
1855 * data pointer is fixed up to point just past it.
1858 fxp_add_rfabuf(struct fxp_softc *sc, struct mbuf *oldm)
1862 struct fxp_rfa *rfa, *p_rfa;
1864 m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
1865 if (m == NULL) { /* try to recycle the old mbuf instead */
1869 m->m_data = m->m_ext.ext_buf;
1873 * Move the data pointer up so that the incoming data packet
1874 * will be 32-bit aligned.
1876 m->m_data += RFA_ALIGNMENT_FUDGE;
1879 * Get a pointer to the base of the mbuf cluster and move
1880 * data start past it.
1882 rfa = mtod(m, struct fxp_rfa *);
1883 m->m_data += sizeof(struct fxp_rfa);
1884 rfa->size = (u_int16_t)(MCLBYTES - sizeof(struct fxp_rfa) - RFA_ALIGNMENT_FUDGE);
1887 * Initialize the rest of the RFA. Note that since the RFA
1888 * is misaligned, we cannot store values directly. Instead,
1889 * we use an optimized, inline copy.
1892 rfa->rfa_status = 0;
1893 rfa->rfa_control = FXP_RFA_CONTROL_EL;
1894 rfa->actual_size = 0;
1897 fxp_lwcopy(&v, (volatile u_int32_t *) rfa->link_addr);
1898 fxp_lwcopy(&v, (volatile u_int32_t *) rfa->rbd_addr);
1901 * If there are other buffers already on the list, attach this
1902 * one to the end by fixing up the tail to point to this one.
1904 if (sc->rfa_headm != NULL) {
1905 p_rfa = (struct fxp_rfa *) (sc->rfa_tailm->m_ext.ext_buf +
1906 RFA_ALIGNMENT_FUDGE);
1907 sc->rfa_tailm->m_next = m;
1909 fxp_lwcopy(&v, (volatile u_int32_t *) p_rfa->link_addr);
1910 p_rfa->rfa_control = 0;
1920 fxp_miibus_readreg(device_t dev, int phy, int reg)
1922 struct fxp_softc *sc = device_get_softc(dev);
1926 CSR_WRITE_4(sc, FXP_CSR_MDICONTROL,
1927 (FXP_MDI_READ << 26) | (reg << 16) | (phy << 21));
1929 while (((value = CSR_READ_4(sc, FXP_CSR_MDICONTROL)) & 0x10000000) == 0
1934 device_printf(dev, "fxp_miibus_readreg: timed out\n");
1936 return (value & 0xffff);
1940 fxp_miibus_writereg(device_t dev, int phy, int reg, int value)
1942 struct fxp_softc *sc = device_get_softc(dev);
1945 CSR_WRITE_4(sc, FXP_CSR_MDICONTROL,
1946 (FXP_MDI_WRITE << 26) | (reg << 16) | (phy << 21) |
1949 while ((CSR_READ_4(sc, FXP_CSR_MDICONTROL) & 0x10000000) == 0 &&
1954 device_printf(dev, "fxp_miibus_writereg: timed out\n");
1958 fxp_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
1960 struct fxp_softc *sc = ifp->if_softc;
1961 struct ifreq *ifr = (struct ifreq *)data;
1962 struct mii_data *mii;
1971 error = ether_ioctl(ifp, command, data);
1975 if (ifp->if_flags & IFF_ALLMULTI)
1976 sc->flags |= FXP_FLAG_ALL_MCAST;
1978 sc->flags &= ~FXP_FLAG_ALL_MCAST;
1981 * If interface is marked up and not running, then start it.
1982 * If it is marked down and running, stop it.
1983 * XXX If it's up then re-initialize it. This is so flags
1984 * such as IFF_PROMISC are handled.
1986 if (ifp->if_flags & IFF_UP) {
1989 if (ifp->if_flags & IFF_RUNNING)
1996 if (ifp->if_flags & IFF_ALLMULTI)
1997 sc->flags |= FXP_FLAG_ALL_MCAST;
1999 sc->flags &= ~FXP_FLAG_ALL_MCAST;
2001 * Multicast list has changed; set the hardware filter
2004 if ((sc->flags & FXP_FLAG_ALL_MCAST) == 0)
2007 * fxp_mc_setup() can set FXP_FLAG_ALL_MCAST, so check it
2008 * again rather than else {}.
2010 if (sc->flags & FXP_FLAG_ALL_MCAST)
2017 if (sc->miibus != NULL) {
2018 mii = device_get_softc(sc->miibus);
2019 error = ifmedia_ioctl(ifp, ifr,
2020 &mii->mii_media, command);
2022 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, command);
2034 * Fill in the multicast address list and return number of entries.
2037 fxp_mc_addrs(struct fxp_softc *sc)
2039 struct fxp_cb_mcs *mcsp = sc->mcsp;
2040 struct ifnet *ifp = &sc->sc_if;
2041 struct ifmultiaddr *ifma;
2045 if ((sc->flags & FXP_FLAG_ALL_MCAST) == 0) {
2046 #if __FreeBSD_version < 500000
2047 LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
2049 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
2051 if (ifma->ifma_addr->sa_family != AF_LINK)
2053 if (nmcasts >= MAXMCADDR) {
2054 sc->flags |= FXP_FLAG_ALL_MCAST;
2058 bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr),
2059 (void *)(uintptr_t)(volatile void *)
2060 &sc->mcsp->mc_addr[nmcasts][0], 6);
2064 mcsp->mc_cnt = nmcasts * 6;
2069 * Program the multicast filter.
2071 * We have an artificial restriction that the multicast setup command
2072 * must be the first command in the chain, so we take steps to ensure
2073 * this. By requiring this, it allows us to keep up the performance of
2074 * the pre-initialized command ring (esp. link pointers) by not actually
2075 * inserting the mcsetup command in the ring - i.e. its link pointer
2076 * points to the TxCB ring, but the mcsetup descriptor itself is not part
2077 * of it. We then can do 'CU_START' on the mcsetup descriptor and have it
2078 * lead into the regular TxCB ring when it completes.
2080 * This function must be called at splimp.
2083 fxp_mc_setup(struct fxp_softc *sc)
2085 struct fxp_cb_mcs *mcsp = sc->mcsp;
2086 struct ifnet *ifp = &sc->sc_if;
2090 * If there are queued commands, we must wait until they are all
2091 * completed. If we are already waiting, then add a NOP command
2092 * with interrupt option so that we're notified when all commands
2093 * have been completed - fxp_start() ensures that no additional
2094 * TX commands will be added when need_mcsetup is true.
2096 if (sc->tx_queued) {
2097 struct fxp_cb_tx *txp;
2100 * need_mcsetup will be true if we are already waiting for the
2101 * NOP command to be completed (see below). In this case, bail.
2103 if (sc->need_mcsetup)
2105 sc->need_mcsetup = 1;
2108 * Add a NOP command with interrupt so that we are notified
2109 * when all TX commands have been processed.
2111 txp = sc->cbl_last->next;
2112 txp->mb_head = NULL;
2114 txp->cb_command = FXP_CB_COMMAND_NOP |
2115 FXP_CB_COMMAND_S | FXP_CB_COMMAND_I;
2117 * Advance the end of list forward.
2119 sc->cbl_last->cb_command &= ~FXP_CB_COMMAND_S;
2123 * Issue a resume in case the CU has just suspended.
2126 fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_RESUME);
2128 * Set a 5 second timer just in case we don't hear from the
2135 sc->need_mcsetup = 0;
2138 * Initialize multicast setup descriptor.
2140 mcsp->next = sc->cbl_base;
2141 mcsp->mb_head = NULL;
2142 mcsp->cb_status = 0;
2143 mcsp->cb_command = FXP_CB_COMMAND_MCAS |
2144 FXP_CB_COMMAND_S | FXP_CB_COMMAND_I;
2145 mcsp->link_addr = vtophys(&sc->cbl_base->cb_status);
2146 (void) fxp_mc_addrs(sc);
2147 sc->cbl_first = sc->cbl_last = (struct fxp_cb_tx *) mcsp;
2151 * Wait until command unit is not active. This should never
2152 * be the case when nothing is queued, but make sure anyway.
2155 while ((CSR_READ_1(sc, FXP_CSR_SCB_RUSCUS) >> 6) ==
2156 FXP_SCB_CUS_ACTIVE && --count)
2159 device_printf(sc->dev, "command queue timeout\n");
2164 * Start the multicast setup command.
2167 CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, vtophys(&mcsp->cb_status));
2168 fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_START);
2174 static u_int32_t fxp_ucode_d101a[] = D101_A_RCVBUNDLE_UCODE;
2175 static u_int32_t fxp_ucode_d101b0[] = D101_B0_RCVBUNDLE_UCODE;
2176 static u_int32_t fxp_ucode_d101ma[] = D101M_B_RCVBUNDLE_UCODE;
2177 static u_int32_t fxp_ucode_d101s[] = D101S_RCVBUNDLE_UCODE;
2178 static u_int32_t fxp_ucode_d102[] = D102_B_RCVBUNDLE_UCODE;
2179 static u_int32_t fxp_ucode_d102c[] = D102_C_RCVBUNDLE_UCODE;
2181 #define UCODE(x) x, sizeof(x)
2187 u_short int_delay_offset;
2188 u_short bundle_max_offset;
2190 { FXP_REV_82558_A4, UCODE(fxp_ucode_d101a), D101_CPUSAVER_DWORD, 0 },
2191 { FXP_REV_82558_B0, UCODE(fxp_ucode_d101b0), D101_CPUSAVER_DWORD, 0 },
2192 { FXP_REV_82559_A0, UCODE(fxp_ucode_d101ma),
2193 D101M_CPUSAVER_DWORD, D101M_CPUSAVER_BUNDLE_MAX_DWORD },
2194 { FXP_REV_82559S_A, UCODE(fxp_ucode_d101s),
2195 D101S_CPUSAVER_DWORD, D101S_CPUSAVER_BUNDLE_MAX_DWORD },
2196 { FXP_REV_82550, UCODE(fxp_ucode_d102),
2197 D102_B_CPUSAVER_DWORD, D102_B_CPUSAVER_BUNDLE_MAX_DWORD },
2198 { FXP_REV_82550_C, UCODE(fxp_ucode_d102c),
2199 D102_C_CPUSAVER_DWORD, D102_C_CPUSAVER_BUNDLE_MAX_DWORD },
2200 { 0, NULL, 0, 0, 0 }
2204 fxp_load_ucode(struct fxp_softc *sc)
2207 struct fxp_cb_ucode *cbp;
2209 for (uc = ucode_table; uc->ucode != NULL; uc++)
2210 if (sc->revision == uc->revision)
2212 if (uc->ucode == NULL)
2214 cbp = (struct fxp_cb_ucode *)sc->cbl_base;
2216 cbp->cb_command = FXP_CB_COMMAND_UCODE | FXP_CB_COMMAND_EL;
2217 cbp->link_addr = -1; /* (no) next command */
2218 memcpy(cbp->ucode, uc->ucode, uc->length);
2219 if (uc->int_delay_offset)
2220 *(u_short *)&cbp->ucode[uc->int_delay_offset] =
2221 sc->tunable_int_delay + sc->tunable_int_delay / 2;
2222 if (uc->bundle_max_offset)
2223 *(u_short *)&cbp->ucode[uc->bundle_max_offset] =
2224 sc->tunable_bundle_max;
2226 * Download the ucode to the chip.
2229 CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, vtophys(&cbp->cb_status));
2230 fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_START);
2231 /* ...and wait for it to complete. */
2232 fxp_dma_wait(&cbp->cb_status, sc);
2233 device_printf(sc->dev,
2234 "Microcode loaded, int_delay: %d usec bundle_max: %d\n",
2235 sc->tunable_int_delay,
2236 uc->bundle_max_offset == 0 ? 0 : sc->tunable_bundle_max);
2237 sc->flags |= FXP_FLAG_UCODE;
2241 sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high)
2245 value = *(int *)arg1;
2246 error = sysctl_handle_int(oidp, &value, 0, req);
2247 if (error || !req->newptr)
2249 if (value < low || value > high)
2251 *(int *)arg1 = value;
2256 * Interrupt delay is expressed in microseconds, a multiplier is used
2257 * to convert this to the appropriate clock ticks before using.
2260 sysctl_hw_fxp_int_delay(SYSCTL_HANDLER_ARGS)
2262 return (sysctl_int_range(oidp, arg1, arg2, req, 300, 3000));
2266 sysctl_hw_fxp_bundle_max(SYSCTL_HANDLER_ARGS)
2268 return (sysctl_int_range(oidp, arg1, arg2, req, 1, 0xffff));