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if_re.c (129879) if_re.c (130270)
1/*
2 * Copyright (c) 1997, 1998-2003
3 * Bill Paul <wpaul@windriver.com>. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
1/*
2 * Copyright (c) 1997, 1998-2003
3 * Bill Paul <wpaul@windriver.com>. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD: head/sys/dev/re/if_re.c 129879 2004-05-30 20:08:47Z phk $");
34__FBSDID("$FreeBSD: head/sys/dev/re/if_re.c 130270 2004-06-09 14:34:04Z naddy $");
35
36/*
37 * RealTek 8139C+/8169/8169S/8110S PCI NIC driver
38 *
39 * Written by Bill Paul <wpaul@windriver.com>
40 * Senior Networking Software Engineer
41 * Wind River Systems
42 */

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221static void re_read_eeprom (struct rl_softc *, caddr_t, int, int, int);
222static int re_gmii_readreg (device_t, int, int);
223static int re_gmii_writereg (device_t, int, int, int);
224
225static int re_miibus_readreg (device_t, int, int);
226static int re_miibus_writereg (device_t, int, int, int);
227static void re_miibus_statchg (device_t);
228
35
36/*
37 * RealTek 8139C+/8169/8169S/8110S PCI NIC driver
38 *
39 * Written by Bill Paul <wpaul@windriver.com>
40 * Senior Networking Software Engineer
41 * Wind River Systems
42 */

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221static void re_read_eeprom (struct rl_softc *, caddr_t, int, int, int);
222static int re_gmii_readreg (device_t, int, int);
223static int re_gmii_writereg (device_t, int, int, int);
224
225static int re_miibus_readreg (device_t, int, int);
226static int re_miibus_writereg (device_t, int, int, int);
227static void re_miibus_statchg (device_t);
228
229static uint32_t re_mchash (const uint8_t *);
230static void re_setmulti (struct rl_softc *);
231static void re_reset (struct rl_softc *);
232
233static int re_diag (struct rl_softc *);
234
235#ifdef RE_USEIOSPACE
236#define RL_RES SYS_RES_IOPORT
237#define RL_RID RL_PCI_LOIO

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569static void
570re_miibus_statchg(dev)
571 device_t dev;
572{
573 return;
574}
575
576/*
229static void re_setmulti (struct rl_softc *);
230static void re_reset (struct rl_softc *);
231
232static int re_diag (struct rl_softc *);
233
234#ifdef RE_USEIOSPACE
235#define RL_RES SYS_RES_IOPORT
236#define RL_RID RL_PCI_LOIO

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568static void
569re_miibus_statchg(dev)
570 device_t dev;
571{
572 return;
573}
574
575/*
577 * Calculate CRC of a multicast group address, return the upper 6 bits.
578 */
579static uint32_t
580re_mchash(addr)
581 const uint8_t *addr;
582{
583 uint32_t crc, carry;
584 int idx, bit;
585 uint8_t data;
586
587 /* Compute CRC for the address value. */
588 crc = 0xFFFFFFFF; /* initial value */
589
590 for (idx = 0; idx < 6; idx++) {
591 for (data = *addr++, bit = 0; bit < 8; bit++, data >>= 1) {
592 carry = ((crc & 0x80000000) ? 1 : 0) ^ (data & 0x01);
593 crc <<= 1;
594 if (carry)
595 crc = (crc ^ 0x04c11db6) | carry;
596 }
597 }
598
599 /* return the filter bit position */
600 return(crc >> 26);
601}
602
603/*
604 * Program the 64-bit multicast hash filter.
605 */
606static void
607re_setmulti(sc)
608 struct rl_softc *sc;
609{
610 struct ifnet *ifp;
611 int h = 0;

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629 /* first, zot all the existing hash bits */
630 CSR_WRITE_4(sc, RL_MAR0, 0);
631 CSR_WRITE_4(sc, RL_MAR4, 0);
632
633 /* now program new ones */
634 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
635 if (ifma->ifma_addr->sa_family != AF_LINK)
636 continue;
576 * Program the 64-bit multicast hash filter.
577 */
578static void
579re_setmulti(sc)
580 struct rl_softc *sc;
581{
582 struct ifnet *ifp;
583 int h = 0;

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601 /* first, zot all the existing hash bits */
602 CSR_WRITE_4(sc, RL_MAR0, 0);
603 CSR_WRITE_4(sc, RL_MAR4, 0);
604
605 /* now program new ones */
606 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
607 if (ifma->ifma_addr->sa_family != AF_LINK)
608 continue;
637 h = re_mchash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
609 h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
610 ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
638 if (h < 32)
639 hashes[0] |= (1 << h);
640 else
641 hashes[1] |= (1 << (h - 32));
642 mcnt++;
643 }
644
645 if (mcnt)

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612 hashes[0] |= (1 << h);
613 else
614 hashes[1] |= (1 << (h - 32));
615 mcnt++;
616 }
617
618 if (mcnt)

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