2 * Copyright (c) 1995, David Greenman
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
32 * Device driver for National Semiconductor DS8390/WD83C690 based ethernet
33 * adapters. By David Greenman, 29-April-1993
35 * Currently supports the Western Digital/SMC 8003 and 8013 series,
36 * the SMC Elite Ultra (8216), the 3Com 3c503, the NE1000 and NE2000,
37 * and a variety of similar clones.
43 #include <sys/param.h>
44 #include <sys/systm.h>
45 #include <sys/sockio.h>
47 #include <sys/kernel.h>
48 #include <sys/socket.h>
49 #include <sys/sysctl.h>
50 #include <sys/syslog.h>
54 #include <machine/bus.h>
56 #include <machine/resource.h>
58 #include <net/ethernet.h>
60 #include <net/if_arp.h>
61 #include <net/if_dl.h>
62 #include <net/if_mib.h>
63 #include <net/if_media.h>
64 #include <net/if_types.h>
68 #include <dev/ed/if_edreg.h>
69 #include <dev/ed/if_edvar.h>
72 devclass_t ed_devclass;
74 static void ed_init(void *);
75 static void ed_init_locked(struct ed_softc *);
76 static int ed_ioctl(struct ifnet *, u_long, caddr_t);
77 static void ed_start(struct ifnet *);
78 static void ed_start_locked(struct ifnet *);
79 static void ed_reset(struct ifnet *);
80 static void ed_tick(void *);
81 static void ed_watchdog(struct ed_softc *);
83 static void ed_ds_getmcaf(struct ed_softc *, uint32_t *);
85 static void ed_get_packet(struct ed_softc *, bus_size_t, u_short);
86 static void ed_stop_hw(struct ed_softc *sc);
88 static __inline void ed_rint(struct ed_softc *);
89 static __inline void ed_xmit(struct ed_softc *);
90 static __inline void ed_ring_copy(struct ed_softc *, bus_size_t, char *,
93 static void ed_setrcr(struct ed_softc *);
96 * Generic probe routine for testing for the existance of a DS8390.
97 * Must be called after the NIC has just been reset. This routine
98 * works by looking at certain register values that are guaranteed
99 * to be initialized a certain way after power-up or reset. Seems
100 * not to currently work on the 83C690.
104 * Register reset bits set bits
105 * Command Register (CR) TXP, STA RD2, STP
106 * Interrupt Status (ISR) RST
107 * Interrupt Mask (IMR) All bits
108 * Data Control (DCR) LAS
109 * Transmit Config. (TCR) LB1, LB0
111 * We only look at the CR and ISR registers, however, because looking at
112 * the others would require changing register pages (which would be
113 * intrusive if this isn't an 8390).
115 * Return 1 if 8390 was found, 0 if not.
119 ed_probe_generic8390(struct ed_softc *sc)
121 if ((ed_nic_inb(sc, ED_P0_CR) &
122 (ED_CR_RD2 | ED_CR_TXP | ED_CR_STA | ED_CR_STP)) !=
123 (ED_CR_RD2 | ED_CR_STP))
125 if ((ed_nic_inb(sc, ED_P0_ISR) & ED_ISR_RST) != ED_ISR_RST)
132 ed_disable_16bit_access(struct ed_softc *sc)
135 * Disable 16 bit access to shared memory
137 if (sc->isa16bit && sc->vendor == ED_VENDOR_WD_SMC) {
138 if (sc->chip_type == ED_CHIP_TYPE_WD790)
139 ed_asic_outb(sc, ED_WD_MSR, 0x00);
140 ed_asic_outb(sc, ED_WD_LAAR,
141 sc->wd_laar_proto & ~ED_WD_LAAR_M16EN);
146 ed_enable_16bit_access(struct ed_softc *sc)
148 if (sc->isa16bit && sc->vendor == ED_VENDOR_WD_SMC) {
149 ed_asic_outb(sc, ED_WD_LAAR,
150 sc->wd_laar_proto | ED_WD_LAAR_M16EN);
151 if (sc->chip_type == ED_CHIP_TYPE_WD790)
152 ed_asic_outb(sc, ED_WD_MSR, ED_WD_MSR_MENB);
157 * Allocate a port resource with the given resource id.
160 ed_alloc_port(device_t dev, int rid, int size)
162 struct ed_softc *sc = device_get_softc(dev);
163 struct resource *res;
165 res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
166 0ul, ~0ul, size, RF_ACTIVE);
169 sc->port_used = size;
170 sc->port_bst = rman_get_bustag(res);
171 sc->port_bsh = rman_get_bushandle(res);
178 * Allocate a memory resource with the given resource id.
181 ed_alloc_memory(device_t dev, int rid, int size)
183 struct ed_softc *sc = device_get_softc(dev);
184 struct resource *res;
186 res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
187 0ul, ~0ul, size, RF_ACTIVE);
191 sc->mem_bst = rman_get_bustag(res);
192 sc->mem_bsh = rman_get_bushandle(res);
199 * Allocate an irq resource with the given resource id.
202 ed_alloc_irq(device_t dev, int rid, int flags)
204 struct ed_softc *sc = device_get_softc(dev);
205 struct resource *res;
207 res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE | flags);
216 * Release all resources
219 ed_release_resources(device_t dev)
221 struct ed_softc *sc = device_get_softc(dev);
224 bus_free_resource(dev, SYS_RES_IOPORT, sc->port_res);
226 bus_free_resource(dev, SYS_RES_IOPORT, sc->port_res2);
228 bus_free_resource(dev, SYS_RES_MEMORY, sc->mem_res);
230 bus_free_resource(dev, SYS_RES_IRQ, sc->irq_res);
240 * Install interface into kernel networking data structures
243 ed_attach(device_t dev)
245 struct ed_softc *sc = device_get_softc(dev);
250 ifp = sc->ifp = if_alloc(IFT_ETHER);
252 device_printf(dev, "can not if_alloc()\n");
257 if (sc->readmem == NULL) {
258 if (sc->mem_shared) {
260 sc->readmem = ed_shmem_readmem16;
262 sc->readmem = ed_shmem_readmem8;
264 sc->readmem = ed_pio_readmem;
267 if (sc->sc_write_mbufs == NULL) {
268 device_printf(dev, "No write mbufs routine set\n");
272 callout_init_mtx(&sc->tick_ch, ED_MUTEX(sc), 0);
274 * Set interface to stopped condition (reset)
279 * Initialize ifnet structure
282 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
283 ifp->if_start = ed_start;
284 ifp->if_ioctl = ed_ioctl;
285 ifp->if_init = ed_init;
286 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
287 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
288 IFQ_SET_READY(&ifp->if_snd);
289 ifp->if_linkmib = &sc->mibdata;
290 ifp->if_linkmiblen = sizeof sc->mibdata;
292 * XXX - should do a better job.
294 if (sc->chip_type == ED_CHIP_TYPE_WD790)
295 sc->mibdata.dot3StatsEtherChipSet =
296 DOT3CHIPSET(dot3VendorWesternDigital,
297 dot3ChipSetWesternDigital83C790);
299 sc->mibdata.dot3StatsEtherChipSet =
300 DOT3CHIPSET(dot3VendorNational,
301 dot3ChipSetNational8390);
302 sc->mibdata.dot3Compliance = DOT3COMPLIANCE_COLLS;
304 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
306 * Set default state for LINK2 flag (used to disable the
307 * tranceiver for AUI operation), based on config option.
308 * We only set this flag before we attach the device, so there's
309 * no race. It is convenient to allow users to turn this off
310 * by default in the kernel config, but given our more advanced
311 * boot time configuration options, this might no longer be needed.
313 if (device_get_flags(dev) & ED_FLAGS_DISABLE_TRANCEIVER)
314 ifp->if_flags |= IFF_LINK2;
317 * Attach the interface
319 ether_ifattach(ifp, sc->enaddr);
320 /* device attach does transition from UNCONFIGURED to IDLE state */
322 sc->tx_mem = sc->txb_cnt * ED_PAGE_SIZE * ED_TXBUF_SIZE;
323 sc->rx_mem = (sc->rec_page_stop - sc->rec_page_start) * ED_PAGE_SIZE;
324 SYSCTL_ADD_STRING(device_get_sysctl_ctx(dev),
325 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
326 0, "type", CTLFLAG_RD, sc->type_str, 0,
327 "Type of chip in card");
328 SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
329 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
330 1, "TxMem", CTLFLAG_RD, &sc->tx_mem, 0,
331 "Memory set aside for transmitting packets");
332 SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
333 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
334 2, "RxMem", CTLFLAG_RD, &sc->rx_mem, 0,
335 "Memory set aside for receiving packets");
336 SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
337 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
338 3, "Mem", CTLFLAG_RD, &sc->mem_size, 0,
339 "Total Card Memory");
341 if (sc->type_str && (*sc->type_str != 0))
342 device_printf(dev, "type %s ", sc->type_str);
344 device_printf(dev, "type unknown (0x%x) ", sc->type);
347 if (sc->vendor == ED_VENDOR_HP)
349 (sc->hpp_id & ED_HPP_ID_16_BIT_ACCESS) ?
351 sc->hpp_mem_start ? "memory mapped" : "regular");
354 printf("%s", sc->isa16bit ? "(16 bit)" : "(8 bit)");
356 #if defined(ED_HPP) || defined(ED_3C503)
357 printf("%s", (((sc->vendor == ED_VENDOR_3COM) ||
358 (sc->vendor == ED_VENDOR_HP)) &&
359 (ifp->if_flags & IFF_LINK2)) ?
360 " tranceiver disabled" : "");
368 * Detach the driver from the hardware and other systems in the kernel.
371 ed_detach(device_t dev)
373 struct ed_softc *sc = device_get_softc(dev);
374 struct ifnet *ifp = sc->ifp;
376 if (mtx_initialized(ED_MUTEX(sc)))
377 ED_ASSERT_UNLOCKED(sc);
380 if (bus_child_present(dev))
382 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
385 callout_drain(&sc->tick_ch);
387 if (sc->irq_res != NULL && sc->irq_handle)
388 bus_teardown_intr(dev, sc->irq_res, sc->irq_handle);
389 ed_release_resources(dev);
391 device_delete_child(dev, sc->miibus);
392 if (mtx_initialized(ED_MUTEX(sc)))
394 bus_generic_detach(dev);
402 ed_reset(struct ifnet *ifp)
404 struct ed_softc *sc = ifp->if_softc;
406 ED_ASSERT_LOCKED(sc);
408 * Stop interface and re-initialize.
415 ed_stop_hw(struct ed_softc *sc)
420 * Stop everything on the interface, and select page 0 registers.
422 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STP);
425 * Wait for interface to enter stopped state, but limit # of checks to
426 * 'n' (about 5ms). It shouldn't even take 5us on modern DS8390's, but
427 * just in case it's an old one.
429 * The AX88x90 chips don't seem to implement this behavor. The
430 * datasheets say it is only turned on when the chip enters a RESET
431 * state and is silent about behavior for the stopped state we just
434 if (sc->chip_type == ED_CHIP_TYPE_AX88190 ||
435 sc->chip_type == ED_CHIP_TYPE_AX88790)
437 while (((ed_nic_inb(sc, ED_P0_ISR) & ED_ISR_RST) == 0) && --n)
440 device_printf(sc->dev, "ed_stop_hw RST never set\n");
444 * Take interface offline.
447 ed_stop(struct ed_softc *sc)
449 ED_ASSERT_LOCKED(sc);
450 callout_stop(&sc->tick_ch);
455 * Periodic timer used to drive the watchdog and attachment-specific
464 ED_ASSERT_LOCKED(sc);
467 if (sc->tx_timer != 0 && --sc->tx_timer == 0)
469 callout_reset(&sc->tick_ch, hz, ed_tick, sc);
473 * Device timeout/watchdog routine. Entered if the device neglects to
474 * generate an interrupt after a transmit has been started on it.
477 ed_watchdog(struct ed_softc *sc)
482 log(LOG_ERR, "%s: device timeout\n", ifp->if_xname);
494 struct ed_softc *sc = xsc;
496 ED_ASSERT_UNLOCKED(sc);
503 ed_init_locked(struct ed_softc *sc)
505 struct ifnet *ifp = sc->ifp;
508 ED_ASSERT_LOCKED(sc);
511 * Initialize the NIC in the exact order outlined in the NS manual.
512 * This init procedure is "mandatory"...don't change what or when
516 /* reset transmitter flags */
524 /* This variable is used below - don't move this assignment */
525 sc->next_packet = sc->rec_page_start + 1;
528 * Set interface for page 0, Remote DMA complete, Stopped
530 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STP);
534 * Set FIFO threshold to 8, No auto-init Remote DMA, byte
535 * order=80x86, word-wide DMA xfers,
537 ed_nic_outb(sc, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_WTS | ED_DCR_LS);
540 * Same as above, but byte-wide DMA xfers
542 ed_nic_outb(sc, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS);
545 * Clear Remote Byte Count Registers
547 ed_nic_outb(sc, ED_P0_RBCR0, 0);
548 ed_nic_outb(sc, ED_P0_RBCR1, 0);
551 * For the moment, don't store incoming packets in memory.
553 ed_nic_outb(sc, ED_P0_RCR, ED_RCR_MON);
556 * Place NIC in internal loopback mode
558 ed_nic_outb(sc, ED_P0_TCR, ED_TCR_LB0);
561 * Initialize transmit/receive (ring-buffer) Page Start
563 ed_nic_outb(sc, ED_P0_TPSR, sc->tx_page_start);
564 ed_nic_outb(sc, ED_P0_PSTART, sc->rec_page_start);
565 /* Set lower bits of byte addressable framing to 0 */
566 if (sc->chip_type == ED_CHIP_TYPE_WD790)
567 ed_nic_outb(sc, 0x09, 0);
570 * Initialize Receiver (ring-buffer) Page Stop and Boundry
572 ed_nic_outb(sc, ED_P0_PSTOP, sc->rec_page_stop);
573 ed_nic_outb(sc, ED_P0_BNRY, sc->rec_page_start);
576 * Clear all interrupts. A '1' in each bit position clears the
577 * corresponding flag.
579 ed_nic_outb(sc, ED_P0_ISR, 0xff);
582 * Enable the following interrupts: receive/transmit complete,
583 * receive/transmit error, and Receiver OverWrite.
585 * Counter overflow and Remote DMA complete are *not* enabled.
587 ed_nic_outb(sc, ED_P0_IMR,
588 ED_IMR_PRXE | ED_IMR_PTXE | ED_IMR_RXEE | ED_IMR_TXEE | ED_IMR_OVWE);
591 * Program Command Register for page 1
593 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STP);
596 * Copy out our station address
598 for (i = 0; i < ETHER_ADDR_LEN; ++i)
599 ed_nic_outb(sc, ED_P1_PAR(i), IF_LLADDR(sc->ifp)[i]);
602 * Set Current Page pointer to next_packet (initialized above)
604 ed_nic_outb(sc, ED_P1_CURR, sc->next_packet);
607 * Program Receiver Configuration Register and multicast filter. CR is
608 * set to page 0 on return.
613 * Take interface out of loopback
615 ed_nic_outb(sc, ED_P0_TCR, 0);
621 * Set 'running' flag, and clear output active flag.
623 ifp->if_drv_flags |= IFF_DRV_RUNNING;
624 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
627 * ...and attempt to start output
629 ed_start_locked(ifp);
631 callout_reset(&sc->tick_ch, hz, ed_tick, sc);
635 * This routine actually starts the transmission on the interface
638 ed_xmit(struct ed_softc *sc)
642 len = sc->txb_len[sc->txb_next_tx];
645 * Set NIC for page 0 register access
647 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STA);
650 * Set TX buffer start page
652 ed_nic_outb(sc, ED_P0_TPSR, sc->tx_page_start +
653 sc->txb_next_tx * ED_TXBUF_SIZE);
658 ed_nic_outb(sc, ED_P0_TBCR0, len);
659 ed_nic_outb(sc, ED_P0_TBCR1, len >> 8);
662 * Set page 0, Remote DMA complete, Transmit Packet, and *Start*
664 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_TXP | ED_CR_STA);
668 * Point to next transmit buffer slot and wrap if necessary.
671 if (sc->txb_next_tx == sc->txb_cnt)
675 * Set a timer just in case we never hear from the board again
681 * Start output on interface.
682 * We make two assumptions here:
683 * 1) that the current priority is set to splimp _before_ this code
684 * is called *and* is returned to the appropriate priority after
686 * 2) that the IFF_DRV_OACTIVE flag is checked before this code is called
687 * (i.e. that the output part of the interface is idle)
690 ed_start(struct ifnet *ifp)
692 struct ed_softc *sc = ifp->if_softc;
694 ED_ASSERT_UNLOCKED(sc);
696 ed_start_locked(ifp);
701 ed_start_locked(struct ifnet *ifp)
703 struct ed_softc *sc = ifp->if_softc;
708 ED_ASSERT_LOCKED(sc);
712 * First, see if there are buffered packets and an idle transmitter -
713 * should never happen at this point.
715 if (sc->txb_inuse && (sc->xmit_busy == 0)) {
716 printf("ed: packets buffered, but transmitter idle\n");
721 * See if there is room to put another packet in the buffer.
723 if (sc->txb_inuse == sc->txb_cnt) {
726 * No room. Indicate this to the outside world and exit.
728 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
731 IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
735 * We are using the !OACTIVE flag to indicate to the outside
736 * world that we can accept an additional packet rather than
737 * that the transmitter is _actually_ active. Indeed, the
738 * transmitter may be active, but if we haven't filled all the
739 * buffers with data then we still want to accept more.
741 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
746 * Copy the mbuf chain into the transmit buffer
750 /* txb_new points to next open buffer slot */
751 buffer = sc->mem_start + (sc->txb_new * ED_TXBUF_SIZE * ED_PAGE_SIZE);
753 len = sc->sc_write_mbufs(sc, m, buffer);
759 sc->txb_len[sc->txb_new] = max(len, (ETHER_MIN_LEN-ETHER_CRC_LEN));
764 * Point to next buffer slot and wrap if necessary.
767 if (sc->txb_new == sc->txb_cnt)
770 if (sc->xmit_busy == 0)
774 * Tap off here if there is a bpf listener.
781 * Loop back to the top to possibly buffer more packets
787 * Ethernet interface receiver interrupt.
790 ed_rint(struct ed_softc *sc)
792 struct ifnet *ifp = sc->ifp;
795 struct ed_ring packet_hdr;
796 bus_size_t packet_ptr;
798 ED_ASSERT_LOCKED(sc);
801 * Set NIC to page 1 registers to get 'current' pointer
803 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STA);
806 * 'sc->next_packet' is the logical beginning of the ring-buffer -
807 * i.e. it points to where new data has been buffered. The 'CURR'
808 * (current) register points to the logical end of the ring-buffer -
809 * i.e. it points to where additional new data will be added. We loop
810 * here until the logical beginning equals the logical end (or in
811 * other words, until the ring-buffer is empty).
813 while (sc->next_packet != ed_nic_inb(sc, ED_P1_CURR)) {
815 /* get pointer to this buffer's header structure */
816 packet_ptr = sc->mem_ring +
817 (sc->next_packet - sc->rec_page_start) * ED_PAGE_SIZE;
820 * The byte count includes a 4 byte header that was added by
823 sc->readmem(sc, packet_ptr, (char *) &packet_hdr,
825 len = packet_hdr.count;
826 if (len > (ETHER_MAX_LEN - ETHER_CRC_LEN + sizeof(struct ed_ring)) ||
827 len < (ETHER_MIN_LEN - ETHER_CRC_LEN + sizeof(struct ed_ring))) {
829 * Length is a wild value. There's a good chance that
830 * this was caused by the NIC being old and buggy.
831 * The bug is that the length low byte is duplicated
832 * in the high byte. Try to recalculate the length
833 * based on the pointer to the next packet. Also,
834 * need ot preserve offset into page.
836 * NOTE: sc->next_packet is pointing at the current
839 len &= ED_PAGE_SIZE - 1;
840 if (packet_hdr.next_packet >= sc->next_packet)
841 len += (packet_hdr.next_packet -
842 sc->next_packet) * ED_PAGE_SIZE;
845 ((packet_hdr.next_packet - sc->rec_page_start) +
846 (sc->rec_page_stop - sc->next_packet)) * ED_PAGE_SIZE;
848 * because buffers are aligned on 256-byte boundary,
849 * the length computed above is off by 256 in almost
850 * all cases. Fix it...
854 if (len > (ETHER_MAX_LEN - ETHER_CRC_LEN
855 + sizeof(struct ed_ring)))
856 sc->mibdata.dot3StatsFrameTooLongs++;
860 * Be fairly liberal about what we allow as a "reasonable"
861 * length so that a [crufty] packet will make it to BPF (and
862 * can thus be analyzed). Note that all that is really
863 * important is that we have a length that will fit into one
864 * mbuf cluster or less; the upper layer protocols can then
865 * figure out the length from their own length field(s). But
866 * make sure that we have at least a full ethernet header or
867 * we would be unable to call ether_input() later.
869 if ((len >= sizeof(struct ed_ring) + ETHER_HDR_LEN) &&
871 (packet_hdr.next_packet >= sc->rec_page_start) &&
872 (packet_hdr.next_packet < sc->rec_page_stop)) {
876 ed_get_packet(sc, packet_ptr + sizeof(struct ed_ring),
877 len - sizeof(struct ed_ring));
881 * Really BAD. The ring pointers are corrupted.
884 "%s: NIC memory corrupt - invalid packet length %d\n",
892 * Update next packet pointer
894 sc->next_packet = packet_hdr.next_packet;
897 * Update NIC boundry pointer - being careful to keep it one
898 * buffer behind. (as recommended by NS databook)
900 boundry = sc->next_packet - 1;
901 if (boundry < sc->rec_page_start)
902 boundry = sc->rec_page_stop - 1;
905 * Set NIC to page 0 registers to update boundry register
907 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STA);
908 ed_nic_outb(sc, ED_P0_BNRY, boundry);
911 * Set NIC to page 1 registers before looping to top (prepare
912 * to get 'CURR' current pointer)
914 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STA);
919 * Ethernet interface interrupt processor
924 struct ed_softc *sc = (struct ed_softc*) arg;
925 struct ifnet *ifp = sc->ifp;
930 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
935 * Set NIC to page 0 registers
937 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STA);
940 * loop until there are no more new interrupts. When the card goes
941 * away, the hardware will read back 0xff. Looking at the interrupts,
942 * it would appear that 0xff is impossible, or at least extremely
945 while ((isr = ed_nic_inb(sc, ED_P0_ISR)) != 0 && isr != 0xff) {
948 * reset all the bits that we are 'acknowledging' by writing a
949 * '1' to each bit position that was set (writing a '1'
952 ed_nic_outb(sc, ED_P0_ISR, isr);
955 * The AX88190 and AX88190A has problems acking an interrupt
956 * and having them clear. This interferes with top-level loop
957 * here. Wait for all the bits to clear.
959 * We limit this to 5000 iterations. At 1us per inb/outb,
960 * this translates to about 15ms, which should be plenty of
961 * time, and also gives protection in the card eject case.
963 if (sc->chip_type == ED_CHIP_TYPE_AX88190) {
964 count = 5000; /* 15ms */
965 while (count-- && (ed_nic_inb(sc, ED_P0_ISR) & isr)) {
966 ed_nic_outb(sc, ED_P0_ISR,0);
967 ed_nic_outb(sc, ED_P0_ISR,isr);
974 * Handle transmitter interrupts. Handle these first because
975 * the receiver will reset the board under some conditions.
977 if (isr & (ED_ISR_PTX | ED_ISR_TXE)) {
978 u_char collisions = ed_nic_inb(sc, ED_P0_NCR) & 0x0f;
981 * Check for transmit error. If a TX completed with an
982 * error, we end up throwing the packet away. Really
983 * the only error that is possible is excessive
984 * collisions, and in this case it is best to allow
985 * the automatic mechanisms of TCP to backoff the
986 * flow. Of course, with UDP we're screwed, but this
987 * is expected when a network is heavily loaded.
989 (void) ed_nic_inb(sc, ED_P0_TSR);
990 if (isr & ED_ISR_TXE) {
994 * Excessive collisions (16)
996 tsr = ed_nic_inb(sc, ED_P0_TSR);
997 if ((tsr & ED_TSR_ABT)
998 && (collisions == 0)) {
1001 * When collisions total 16, the
1002 * P0_NCR will indicate 0, and the
1006 sc->mibdata.dot3StatsExcessiveCollisions++;
1007 sc->mibdata.dot3StatsCollFrequencies[15]++;
1009 if (tsr & ED_TSR_OWC)
1010 sc->mibdata.dot3StatsLateCollisions++;
1011 if (tsr & ED_TSR_CDH)
1012 sc->mibdata.dot3StatsSQETestErrors++;
1013 if (tsr & ED_TSR_CRS)
1014 sc->mibdata.dot3StatsCarrierSenseErrors++;
1015 if (tsr & ED_TSR_FU)
1016 sc->mibdata.dot3StatsInternalMacTransmitErrors++;
1019 * update output errors counter
1025 * Update total number of successfully
1026 * transmitted packets.
1032 * reset tx busy and output active flags
1035 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
1038 * clear watchdog timer
1043 * Add in total number of collisions on last
1046 ifp->if_collisions += collisions;
1047 switch(collisions) {
1052 sc->mibdata.dot3StatsSingleCollisionFrames++;
1053 sc->mibdata.dot3StatsCollFrequencies[0]++;
1056 sc->mibdata.dot3StatsMultipleCollisionFrames++;
1058 dot3StatsCollFrequencies[collisions-1]
1064 * Decrement buffer in-use count if not zero (can only
1065 * be zero if a transmitter interrupt occured while
1066 * not actually transmitting). If data is ready to
1067 * transmit, start it transmitting, otherwise defer
1068 * until after handling receiver
1070 if (sc->txb_inuse && --sc->txb_inuse)
1075 * Handle receiver interrupts
1077 if (isr & (ED_ISR_PRX | ED_ISR_RXE | ED_ISR_OVW)) {
1080 * Overwrite warning. In order to make sure that a
1081 * lockup of the local DMA hasn't occurred, we reset
1082 * and re-init the NIC. The NSC manual suggests only a
1083 * partial reset/re-init is necessary - but some chips
1084 * seem to want more. The DMA lockup has been seen
1085 * only with early rev chips - Methinks this bug was
1086 * fixed in later revs. -DG
1088 if (isr & ED_ISR_OVW) {
1092 "%s: warning - receiver ring buffer overrun\n",
1097 * Stop/reset/re-init NIC
1103 * Receiver Error. One or more of: CRC error,
1104 * frame alignment error FIFO overrun, or
1107 if (isr & ED_ISR_RXE) {
1109 rsr = ed_nic_inb(sc, ED_P0_RSR);
1110 if (rsr & ED_RSR_CRC)
1111 sc->mibdata.dot3StatsFCSErrors++;
1112 if (rsr & ED_RSR_FAE)
1113 sc->mibdata.dot3StatsAlignmentErrors++;
1114 if (rsr & ED_RSR_FO)
1115 sc->mibdata.dot3StatsInternalMacReceiveErrors++;
1118 if_printf(ifp, "receive error %x\n",
1119 ed_nic_inb(sc, ED_P0_RSR));
1124 * Go get the packet(s) XXX - Doing this on an
1125 * error is dubious because there shouldn't be
1126 * any data to get (we've configured the
1127 * interface to not accept packets with
1132 * Enable 16bit access to shared memory first
1135 ed_enable_16bit_access(sc);
1137 ed_disable_16bit_access(sc);
1142 * If it looks like the transmitter can take more data,
1143 * attempt to start output on the interface. This is done
1144 * after handling the receiver to give the receiver priority.
1146 if ((ifp->if_drv_flags & IFF_DRV_OACTIVE) == 0)
1147 ed_start_locked(ifp);
1150 * return NIC CR to standard state: page 0, remote DMA
1151 * complete, start (toggling the TXP bit off, even if was just
1152 * set in the transmit routine, is *okay* - it is 'edge'
1153 * triggered from low to high)
1155 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STA);
1158 * If the Network Talley Counters overflow, read them to reset
1159 * them. It appears that old 8390's won't clear the ISR flag
1160 * otherwise - resulting in an infinite loop.
1162 if (isr & ED_ISR_CNT) {
1163 (void) ed_nic_inb(sc, ED_P0_CNTR0);
1164 (void) ed_nic_inb(sc, ED_P0_CNTR1);
1165 (void) ed_nic_inb(sc, ED_P0_CNTR2);
1172 * Process an ioctl request.
1175 ed_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
1177 struct ed_softc *sc = ifp->if_softc;
1178 struct ifreq *ifr = (struct ifreq *)data;
1184 * If the interface is marked up and stopped, then start it.
1185 * If we're up and already running, then it may be a mediachg.
1186 * If it is marked down and running, then stop it.
1189 if (ifp->if_flags & IFF_UP) {
1190 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
1192 else if (sc->sc_mediachg)
1193 sc->sc_mediachg(sc);
1195 if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
1197 ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
1202 * Promiscuous flag may have changed, so reprogram the RCR.
1212 * Multicast list has changed; set the hardware filter
1223 if (sc->sc_media_ioctl == NULL) {
1227 sc->sc_media_ioctl(sc, ifr, command);
1231 error = ether_ioctl(ifp, command, data);
1238 * Given a source and destination address, copy 'amount' of a packet from
1239 * the ring buffer into a linear destination buffer. Takes into account
1242 static __inline void
1243 ed_ring_copy(struct ed_softc *sc, bus_size_t src, char *dst, u_short amount)
1247 /* does copy wrap to lower addr in ring buffer? */
1248 if (src + amount > sc->mem_end) {
1249 tmp_amount = sc->mem_end - src;
1250 /* copy amount up to end of NIC memory */
1251 sc->readmem(sc, src, dst, tmp_amount);
1252 amount -= tmp_amount;
1256 sc->readmem(sc, src, dst, amount);
1260 * Retreive packet from shared memory and send to the next level up via
1264 ed_get_packet(struct ed_softc *sc, bus_size_t buf, u_short len)
1266 struct ifnet *ifp = sc->ifp;
1267 struct ether_header *eh;
1270 /* Allocate a header mbuf */
1271 MGETHDR(m, M_DONTWAIT, MT_DATA);
1274 m->m_pkthdr.rcvif = ifp;
1275 m->m_pkthdr.len = m->m_len = len;
1278 * We always put the received packet in a single buffer -
1279 * either with just an mbuf header or in a cluster attached
1280 * to the header. The +2 is to compensate for the alignment
1283 if ((len + 2) > MHLEN) {
1284 /* Attach an mbuf cluster */
1285 MCLGET(m, M_DONTWAIT);
1287 /* Insist on getting a cluster */
1288 if ((m->m_flags & M_EXT) == 0) {
1295 * The +2 is to longword align the start of the real packet.
1296 * This is important for NFS.
1299 eh = mtod(m, struct ether_header *);
1302 * Get packet, including link layer address, from interface.
1304 ed_ring_copy(sc, buf, (char *)eh, len);
1306 m->m_pkthdr.len = m->m_len = len;
1309 (*ifp->if_input)(ifp, m);
1314 * Supporting routines
1318 * Given a NIC memory source address and a host memory destination
1319 * address, copy 'amount' from NIC to host using shared memory.
1320 * The 'amount' is rounded up to a word - okay as long as mbufs
1321 * are word sized. That's what the +1 is below.
1322 * This routine accesses things as 16 bit quantities.
1325 ed_shmem_readmem16(struct ed_softc *sc, bus_size_t src, uint8_t *dst,
1328 bus_space_read_region_2(sc->mem_bst, sc->mem_bsh, src, (uint16_t *)dst,
1333 * Given a NIC memory source address and a host memory destination
1334 * address, copy 'amount' from NIC to host using shared memory.
1335 * This routine accesses things as 8 bit quantities.
1338 ed_shmem_readmem8(struct ed_softc *sc, bus_size_t src, uint8_t *dst,
1341 bus_space_read_region_1(sc->mem_bst, sc->mem_bsh, src, dst, amount);
1345 * Given a NIC memory source address and a host memory destination
1346 * address, copy 'amount' from NIC to host using Programmed I/O.
1347 * The 'amount' is rounded up to a word - okay as long as mbufs
1349 * This routine is currently Novell-specific.
1352 ed_pio_readmem(struct ed_softc *sc, bus_size_t src, uint8_t *dst,
1355 /* Regular Novell cards */
1356 /* select page 0 registers */
1357 ed_nic_outb(sc, ED_P0_CR, ED_CR_RD2 | ED_CR_STA);
1359 /* round up to a word */
1363 /* set up DMA byte count */
1364 ed_nic_outb(sc, ED_P0_RBCR0, amount);
1365 ed_nic_outb(sc, ED_P0_RBCR1, amount >> 8);
1367 /* set up source address in NIC mem */
1368 ed_nic_outb(sc, ED_P0_RSAR0, src);
1369 ed_nic_outb(sc, ED_P0_RSAR1, src >> 8);
1371 ed_nic_outb(sc, ED_P0_CR, ED_CR_RD0 | ED_CR_STA);
1374 ed_asic_insw(sc, ED_NOVELL_DATA, dst, amount / 2);
1376 ed_asic_insb(sc, ED_NOVELL_DATA, dst, amount);
1380 * Stripped down routine for writing a linear buffer to NIC memory.
1381 * Only used in the probe routine to test the memory. 'len' must
1385 ed_pio_writemem(struct ed_softc *sc, uint8_t *src, uint16_t dst, uint16_t len)
1387 int maxwait = 200; /* about 240us */
1389 /* select page 0 registers */
1390 ed_nic_outb(sc, ED_P0_CR, ED_CR_RD2 | ED_CR_STA);
1392 /* reset remote DMA complete flag */
1393 ed_nic_outb(sc, ED_P0_ISR, ED_ISR_RDC);
1395 /* set up DMA byte count */
1396 ed_nic_outb(sc, ED_P0_RBCR0, len);
1397 ed_nic_outb(sc, ED_P0_RBCR1, len >> 8);
1399 /* set up destination address in NIC mem */
1400 ed_nic_outb(sc, ED_P0_RSAR0, dst);
1401 ed_nic_outb(sc, ED_P0_RSAR1, dst >> 8);
1403 /* set remote DMA write */
1404 ed_nic_outb(sc, ED_P0_CR, ED_CR_RD1 | ED_CR_STA);
1407 ed_asic_outsw(sc, ED_NOVELL_DATA, src, len / 2);
1409 ed_asic_outsb(sc, ED_NOVELL_DATA, src, len);
1412 * Wait for remote DMA complete. This is necessary because on the
1413 * transmit side, data is handled internally by the NIC in bursts and
1414 * we can't start another remote DMA until this one completes. Not
1415 * waiting causes really bad things to happen - like the NIC
1416 * irrecoverably jamming the ISA bus.
1418 while (((ed_nic_inb(sc, ED_P0_ISR) & ED_ISR_RDC) != ED_ISR_RDC) &&
1424 * Write an mbuf chain to the destination NIC memory address using
1428 ed_pio_write_mbufs(struct ed_softc *sc, struct mbuf *m, bus_size_t dst)
1430 struct ifnet *ifp = sc->ifp;
1431 unsigned short total_len, dma_len;
1433 int maxwait = 200; /* about 240us */
1435 ED_ASSERT_LOCKED(sc);
1437 /* Regular Novell cards */
1438 /* First, count up the total number of bytes to copy */
1439 for (total_len = 0, mp = m; mp; mp = mp->m_next)
1440 total_len += mp->m_len;
1442 dma_len = total_len;
1443 if (sc->isa16bit && (dma_len & 1))
1446 /* select page 0 registers */
1447 ed_nic_outb(sc, ED_P0_CR, ED_CR_RD2 | ED_CR_STA);
1449 /* reset remote DMA complete flag */
1450 ed_nic_outb(sc, ED_P0_ISR, ED_ISR_RDC);
1452 /* set up DMA byte count */
1453 ed_nic_outb(sc, ED_P0_RBCR0, dma_len);
1454 ed_nic_outb(sc, ED_P0_RBCR1, dma_len >> 8);
1456 /* set up destination address in NIC mem */
1457 ed_nic_outb(sc, ED_P0_RSAR0, dst);
1458 ed_nic_outb(sc, ED_P0_RSAR1, dst >> 8);
1460 /* set remote DMA write */
1461 ed_nic_outb(sc, ED_P0_CR, ED_CR_RD1 | ED_CR_STA);
1464 * Transfer the mbuf chain to the NIC memory.
1465 * 16-bit cards require that data be transferred as words, and only words.
1466 * So that case requires some extra code to patch over odd-length mbufs.
1469 if (!sc->isa16bit) {
1470 /* NE1000s are easy */
1473 ed_asic_outsb(sc, ED_NOVELL_DATA,
1474 m->m_data, m->m_len);
1478 /* NE2000s are a pain */
1491 data = mtod(m, caddr_t);
1492 /* finish the last word */
1494 saveword.b[1] = *data;
1495 ed_asic_outw(sc, ED_NOVELL_DATA,
1501 /* output contiguous words */
1503 ed_asic_outsw(sc, ED_NOVELL_DATA,
1508 /* save last byte, if necessary */
1510 saveword.b[0] = *data;
1516 /* spit last byte */
1518 ed_asic_outw(sc, ED_NOVELL_DATA, saveword.w);
1522 * Wait for remote DMA complete. This is necessary because on the
1523 * transmit side, data is handled internally by the NIC in bursts and
1524 * we can't start another remote DMA until this one completes. Not
1525 * waiting causes really bad things to happen - like the NIC
1526 * irrecoverably jamming the ISA bus.
1528 while (((ed_nic_inb(sc, ED_P0_ISR) & ED_ISR_RDC) != ED_ISR_RDC) &&
1533 log(LOG_WARNING, "%s: remote transmit DMA failed to complete\n",
1542 ed_setrcr(struct ed_softc *sc)
1544 struct ifnet *ifp = sc->ifp;
1548 ED_ASSERT_LOCKED(sc);
1550 /* Bit 6 in AX88190 RCR register must be set. */
1551 if (sc->chip_type == ED_CHIP_TYPE_AX88190 ||
1552 sc->chip_type == ED_CHIP_TYPE_AX88790)
1557 /* set page 1 registers */
1558 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STP);
1560 if (ifp->if_flags & IFF_PROMISC) {
1563 * Reconfigure the multicast filter.
1565 for (i = 0; i < 8; i++)
1566 ed_nic_outb(sc, ED_P1_MAR(i), 0xff);
1569 * And turn on promiscuous mode. Also enable reception of
1570 * runts and packets with CRC & alignment errors.
1572 /* Set page 0 registers */
1573 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STP);
1575 ed_nic_outb(sc, ED_P0_RCR, ED_RCR_PRO | ED_RCR_AM |
1576 ED_RCR_AB | ED_RCR_AR | ED_RCR_SEP | reg1);
1578 /* set up multicast addresses and filter modes */
1579 if (ifp->if_flags & IFF_MULTICAST) {
1582 if (ifp->if_flags & IFF_ALLMULTI) {
1583 mcaf[0] = 0xffffffff;
1584 mcaf[1] = 0xffffffff;
1586 ed_ds_getmcaf(sc, mcaf);
1589 * Set multicast filter on chip.
1591 for (i = 0; i < 8; i++)
1592 ed_nic_outb(sc, ED_P1_MAR(i), ((u_char *) mcaf)[i]);
1594 /* Set page 0 registers */
1595 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STP);
1597 ed_nic_outb(sc, ED_P0_RCR, ED_RCR_AM | ED_RCR_AB | reg1);
1601 * Initialize multicast address hashing registers to
1602 * not accept multicasts.
1604 for (i = 0; i < 8; ++i)
1605 ed_nic_outb(sc, ED_P1_MAR(i), 0x00);
1607 /* Set page 0 registers */
1608 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STP);
1610 ed_nic_outb(sc, ED_P0_RCR, ED_RCR_AB | reg1);
1617 ed_nic_outb(sc, ED_P0_CR, sc->cr_proto | ED_CR_STA);
1621 * Compute the multicast address filter from the
1622 * list of multicast addresses we need to listen to.
1625 ed_ds_getmcaf(struct ed_softc *sc, uint32_t *mcaf)
1628 u_char *af = (u_char *) mcaf;
1629 struct ifmultiaddr *ifma;
1634 if_maddr_rlock(sc->ifp);
1635 TAILQ_FOREACH(ifma, &sc->ifp->if_multiaddrs, ifma_link) {
1636 if (ifma->ifma_addr->sa_family != AF_LINK)
1638 index = ether_crc32_be(LLADDR((struct sockaddr_dl *)
1639 ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
1640 af[index >> 3] |= 1 << (index & 7);
1642 if_maddr_runlock(sc->ifp);
1646 ed_isa_mem_ok(device_t dev, u_long pmem, u_int memsize)
1648 if (pmem < 0xa0000 || pmem + memsize > 0x1000000) {
1649 device_printf(dev, "Invalid ISA memory address range "
1650 "configured: 0x%lx - 0x%lx\n", pmem, pmem + memsize);
1657 ed_clear_memory(device_t dev)
1659 struct ed_softc *sc = device_get_softc(dev);
1662 bus_space_set_region_1(sc->mem_bst, sc->mem_bsh, sc->mem_start,
1665 for (i = 0; i < sc->mem_size; i++) {
1666 if (bus_space_read_1(sc->mem_bst, sc->mem_bsh,
1667 sc->mem_start + i)) {
1668 device_printf(dev, "failed to clear shared memory at "
1669 "0x%jx - check configuration\n",
1670 (uintmax_t)rman_get_start(sc->mem_res) + i);
1678 ed_shmem_write_mbufs(struct ed_softc *sc, struct mbuf *m, bus_size_t dst)
1683 * Special case setup for 16 bit boards...
1686 switch (sc->vendor) {
1689 * For 16bit 3Com boards (which have 16k of
1690 * memory), we have the xmit buffers in a
1691 * different page of memory ('page 0') - so
1694 case ED_VENDOR_3COM:
1695 ed_asic_outb(sc, ED_3COM_GACFR, ED_3COM_GACFR_RSEL);
1699 * Enable 16bit access to shared memory on
1702 * XXX - same as ed_enable_16bit_access()
1704 case ED_VENDOR_WD_SMC:
1705 ed_asic_outb(sc, ED_WD_LAAR,
1706 sc->wd_laar_proto | ED_WD_LAAR_M16EN);
1707 if (sc->chip_type == ED_CHIP_TYPE_WD790)
1708 ed_asic_outb(sc, ED_WD_MSR, ED_WD_MSR_MENB);
1712 for (len = 0; m != 0; m = m->m_next) {
1714 bus_space_write_region_2(sc->mem_bst,
1716 mtod(m, uint16_t *), (m->m_len + 1)/ 2);
1718 bus_space_write_region_1(sc->mem_bst,
1720 mtod(m, uint8_t *), m->m_len);
1726 * Restore previous shared memory access
1729 switch (sc->vendor) {
1731 case ED_VENDOR_3COM:
1732 ed_asic_outb(sc, ED_3COM_GACFR,
1733 ED_3COM_GACFR_RSEL | ED_3COM_GACFR_MBS0);
1736 case ED_VENDOR_WD_SMC:
1737 /* XXX - same as ed_disable_16bit_access() */
1738 if (sc->chip_type == ED_CHIP_TYPE_WD790)
1739 ed_asic_outb(sc, ED_WD_MSR, 0x00);
1740 ed_asic_outb(sc, ED_WD_LAAR,
1741 sc->wd_laar_proto & ~ED_WD_LAAR_M16EN);
1749 * Generic ifmedia support. By default, the DP8390-based cards don't know
1750 * what their network attachment really is, or even if it is valid (except
1751 * upon successful transmission of a packet). To play nicer with dhclient, as
1752 * well as to fit in with a framework where some cards can provde more
1753 * detailed information, make sure that we use this as a fallback.
1756 ed_gen_ifmedia_ioctl(struct ed_softc *sc, struct ifreq *ifr, u_long command)
1758 return (ifmedia_ioctl(sc->ifp, ifr, &sc->ifmedia, command));
1762 ed_gen_ifmedia_upd(struct ifnet *ifp)
1768 ed_gen_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
1770 ifmr->ifm_active = IFM_ETHER | IFM_AUTO;
1771 ifmr->ifm_status = IFM_AVALID | IFM_ACTIVE;
1775 ed_gen_ifmedia_init(struct ed_softc *sc)
1777 sc->sc_media_ioctl = &ed_gen_ifmedia_ioctl;
1778 ifmedia_init(&sc->ifmedia, 0, ed_gen_ifmedia_upd, ed_gen_ifmedia_sts);
1779 ifmedia_add(&sc->ifmedia, IFM_ETHER | IFM_AUTO, 0, 0);
1780 ifmedia_set(&sc->ifmedia, IFM_ETHER | IFM_AUTO);