| if_vr.c (121816) | if_vr.c (122625) |
|---|---|
| 1/* 2 * Copyright (c) 1997, 1998 3 * Bill Paul <wpaul@ctr.columbia.edu>. 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 --- 44 unchanged lines hidden (view full) --- 53 * The Rhine has a serious flaw in its transmit DMA mechanism: 54 * transmit buffers must be longword aligned. Unfortunately, 55 * FreeBSD doesn't guarantee that mbufs will be filled in starting 56 * at longword boundaries, so we have to do a buffer copy before 57 * transmission. 58 */ 59 60#include <sys/cdefs.h> | 1/* 2 * Copyright (c) 1997, 1998 3 * Bill Paul <wpaul@ctr.columbia.edu>. 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 --- 44 unchanged lines hidden (view full) --- 53 * The Rhine has a serious flaw in its transmit DMA mechanism: 54 * transmit buffers must be longword aligned. Unfortunately, 55 * FreeBSD doesn't guarantee that mbufs will be filled in starting 56 * at longword boundaries, so we have to do a buffer copy before 57 * transmission. 58 */ 59 60#include <sys/cdefs.h> |
| 61__FBSDID("$FreeBSD: head/sys/dev/vr/if_vr.c 121816 2003-10-31 18:32:15Z brooks $"); | 61__FBSDID("$FreeBSD: head/sys/dev/vr/if_vr.c 122625 2003-11-13 20:55:53Z obrien $"); |
| 62 63#include <sys/param.h> 64#include <sys/systm.h> 65#include <sys/sockio.h> 66#include <sys/mbuf.h> 67#include <sys/malloc.h> 68#include <sys/kernel.h> 69#include <sys/socket.h> --- 86 unchanged lines hidden (view full) --- 156#endif 157static int vr_mii_readreg (struct vr_softc *, struct vr_mii_frame *); 158static int vr_mii_writereg (struct vr_softc *, struct vr_mii_frame *); 159static int vr_miibus_readreg (device_t, int, int); 160static int vr_miibus_writereg (device_t, int, int, int); 161static void vr_miibus_statchg (device_t); 162 163static void vr_setcfg (struct vr_softc *, int); | 62 63#include <sys/param.h> 64#include <sys/systm.h> 65#include <sys/sockio.h> 66#include <sys/mbuf.h> 67#include <sys/malloc.h> 68#include <sys/kernel.h> 69#include <sys/socket.h> --- 86 unchanged lines hidden (view full) --- 156#endif 157static int vr_mii_readreg (struct vr_softc *, struct vr_mii_frame *); 158static int vr_mii_writereg (struct vr_softc *, struct vr_mii_frame *); 159static int vr_miibus_readreg (device_t, int, int); 160static int vr_miibus_writereg (device_t, int, int, int); 161static void vr_miibus_statchg (device_t); 162 163static void vr_setcfg (struct vr_softc *, int); |
| 164static u_int8_t vr_calchash (u_int8_t *); | 164static u_int32_t vr_mchash (caddr_t); |
| 165static void vr_setmulti (struct vr_softc *); 166static void vr_reset (struct vr_softc *); 167static int vr_list_rx_init (struct vr_softc *); 168static int vr_list_tx_init (struct vr_softc *); 169 170#ifdef VR_USEIOSPACE 171#define VR_RES SYS_RES_IOPORT 172#define VR_RID VR_PCI_LOIO --- 387 unchanged lines hidden (view full) --- 560 VR_UNLOCK(sc); 561 562 return; 563} 564 565/* 566 * Calculate CRC of a multicast group address, return the lower 6 bits. 567 */ | 165static void vr_setmulti (struct vr_softc *); 166static void vr_reset (struct vr_softc *); 167static int vr_list_rx_init (struct vr_softc *); 168static int vr_list_tx_init (struct vr_softc *); 169 170#ifdef VR_USEIOSPACE 171#define VR_RES SYS_RES_IOPORT 172#define VR_RID VR_PCI_LOIO --- 387 unchanged lines hidden (view full) --- 560 VR_UNLOCK(sc); 561 562 return; 563} 564 565/* 566 * Calculate CRC of a multicast group address, return the lower 6 bits. 567 */ |
| 568static u_int8_t vr_calchash(addr) 569 u_int8_t *addr; | 568static u_int32_t 569vr_mchash(addr) 570 caddr_t addr; |
| 570{ | 571{ |
| 571 u_int32_t crc, carry; 572 int i, j; 573 u_int8_t c; | 572 u_int32_t crc, carry; 573 int idx, bit; 574 u_int8_t data; |
| 574 575 /* Compute CRC for the address value. */ 576 crc = 0xFFFFFFFF; /* initial value */ 577 | 575 576 /* Compute CRC for the address value. */ 577 crc = 0xFFFFFFFF; /* initial value */ 578 |
| 578 for (i = 0; i < 6; i++) { 579 c = *(addr + i); 580 for (j = 0; j < 8; j++) { 581 carry = ((crc & 0x80000000) ? 1 : 0) ^ (c & 0x01); | 579 for (idx = 0; idx < 6; idx++) { 580 for (data = *addr++, bit = 0; bit < 8; bit++, data >>= 1) { 581 carry = ((crc & 0x80000000) ? 1 : 0) ^ (data & 0x01); |
| 582 crc <<= 1; | 582 crc <<= 1; |
| 583 c >>= 1; | |
| 584 if (carry) 585 crc = (crc ^ 0x04c11db6) | carry; 586 } 587 } 588 589 /* return the filter bit position */ 590 return((crc >> 26) & 0x0000003F); 591} --- 27 unchanged lines hidden (view full) --- 619 /* first, zot all the existing hash bits */ 620 CSR_WRITE_4(sc, VR_MAR0, 0); 621 CSR_WRITE_4(sc, VR_MAR1, 0); 622 623 /* now program new ones */ 624 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 625 if (ifma->ifma_addr->sa_family != AF_LINK) 626 continue; | 583 if (carry) 584 crc = (crc ^ 0x04c11db6) | carry; 585 } 586 } 587 588 /* return the filter bit position */ 589 return((crc >> 26) & 0x0000003F); 590} --- 27 unchanged lines hidden (view full) --- 618 /* first, zot all the existing hash bits */ 619 CSR_WRITE_4(sc, VR_MAR0, 0); 620 CSR_WRITE_4(sc, VR_MAR1, 0); 621 622 /* now program new ones */ 623 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 624 if (ifma->ifma_addr->sa_family != AF_LINK) 625 continue; |
| 627 h = vr_calchash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); | 626 h = vr_mchash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); |
| 628 if (h < 32) 629 hashes[0] |= (1 << h); 630 else 631 hashes[1] |= (1 << (h - 32)); 632 mcnt++; 633 } 634 635 if (mcnt) --- 1169 unchanged lines hidden --- | 627 if (h < 32) 628 hashes[0] |= (1 << h); 629 else 630 hashes[1] |= (1 << (h - 32)); 631 mcnt++; 632 } 633 634 if (mcnt) --- 1169 unchanged lines hidden --- |