diff options
Diffstat (limited to 'sys/arch/mac68k/dev/if_ae.c')
| -rw-r--r-- | sys/arch/mac68k/dev/if_ae.c | 977 |
1 files changed, 39 insertions, 938 deletions
diff --git a/sys/arch/mac68k/dev/if_ae.c b/sys/arch/mac68k/dev/if_ae.c index 7f9556a5af6..b16725036f7 100644 --- a/sys/arch/mac68k/dev/if_ae.c +++ b/sys/arch/mac68k/dev/if_ae.c @@ -1,5 +1,5 @@ -/* $OpenBSD: if_ae.c,v 1.33 2007/01/12 16:31:21 martin Exp $ */ -/* $NetBSD: if_ae.c,v 1.62 1997/04/24 16:52:05 scottr Exp $ */ +/* $OpenBSD: if_ae.c,v 1.34 2007/01/22 13:17:45 martin Exp $ */ +/* $NetBSD: if_ae.c,v 1.78 2006/09/09 06:25:08 tsutsui Exp $ */ /* * Device driver for National Semiconductor DS8390/WD83C690 based ethernet @@ -18,60 +18,40 @@ #include <sys/param.h> #include <sys/systm.h> -#include <sys/errno.h> -#include <sys/ioctl.h> +#include <sys/device.h> #include <sys/mbuf.h> #include <sys/socket.h> -#include <sys/syslog.h> -#include <sys/device.h> #include <net/if.h> #include <net/if_dl.h> #include <net/if_types.h> -#include <net/netisr.h> -#ifdef INET #include <netinet/in.h> #include <netinet/in_systm.h> #include <netinet/in_var.h> #include <netinet/ip.h> #include <netinet/if_ether.h> -#endif + +#include <net/if_media.h> #if NBPFILTER > 0 #include <net/bpf.h> -#include <net/bpfdesc.h> #endif #include <machine/bus.h> -#include <machine/viareg.h> #include <dev/ic/dp8390reg.h> -#include "if_aereg.h" -#include "if_aevar.h" - -#define inline /* XXX for debugging porpoises */ - -static inline void ae_rint(struct ae_softc *); -static inline void ae_xmit(struct ae_softc *); -static inline int ae_ring_copy( struct ae_softc *, int, caddr_t, int); - -#define NIC_GET(sc, reg) (bus_space_read_1((sc)->sc_regt, \ - (sc)->sc_regh, \ - ((sc)->sc_reg_map[reg]))) -#define NIC_PUT(sc, reg, val) (bus_space_write_1((sc)->sc_regt, \ - (sc)->sc_regh, \ - ((sc)->sc_reg_map[reg]), (val))) +#include <dev/ic/dp8390var.h> +#include <mac68k/dev/if_aevar.h> struct cfdriver ae_cd = { NULL, "ae", DV_IFNET }; +#define ETHER_PAD_LEN (ETHER_MIN_LEN - ETHER_CRC_LEN) + int -ae_size_card_memory(bst, bsh, ofs) - bus_space_tag_t bst; - bus_space_handle_t bsh; - int ofs; +ae_size_card_memory(bus_space_tag_t bst, bus_space_handle_t bsh, int ofs) { int i1, i2, i3, i4, i8; @@ -127,930 +107,40 @@ ae_size_card_memory(bst, bsh, ofs) } /* - * Do bus-independent setup. + * Zero memory and verify that it is clear. The only difference between + * this and the default test_mem function is that the DP8390-based NuBus + * cards * apparently require word-wide writes and byte-wide reads, an + * `interesting' combination. */ int -aesetup(sc) - struct ae_softc *sc; +ae_test_mem(struct dp8390_softc *sc) { - struct ifnet *ifp = &sc->sc_arpcom.ac_if; + bus_space_tag_t buft = sc->sc_buft; + bus_space_handle_t bufh = sc->sc_bufh; int i; - sc->cr_proto = ED_CR_RD2; - - /* Allocate one xmit buffer if < 16k, two buffers otherwise. */ - if ((sc->mem_size < 16384) || - (sc->sc_flags & AE_FLAGS_NO_DOUBLE_BUFFERING)) - sc->txb_cnt = 1; - else - sc->txb_cnt = 2; - - sc->tx_page_start = 0; - sc->rec_page_start = sc->tx_page_start + sc->txb_cnt * ED_TXBUF_SIZE; - sc->rec_page_stop = sc->tx_page_start + (sc->mem_size >> ED_PAGE_SHIFT); - sc->mem_ring = sc->rec_page_start << ED_PAGE_SHIFT; - - /* Now zero memory and verify that it is clear. */ - bus_space_set_region_2(sc->sc_buft, sc->sc_bufh, - 0, 0, sc->mem_size / 2); + bus_space_set_region_2(buft, bufh, sc->mem_start, 0, + sc->mem_size / 2); for (i = 0; i < sc->mem_size; ++i) { if (bus_space_read_1(sc->sc_buft, sc->sc_bufh, i)) { - printf(": failed to clear shared memory\n"); + printf(": failed to clear NIC buffer at offset %x - " + "check configuration\n", (sc->mem_start + i)); return 1; } } - /* Set interface to stopped condition (reset). */ - aestop(sc); - - /* Initialize ifnet structure. */ - bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); - ifp->if_softc = sc; - ifp->if_start = aestart; - ifp->if_ioctl = aeioctl; - if (!ifp->if_watchdog) - ifp->if_watchdog = aewatchdog; - ifp->if_flags = - IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; - - /* Attach the interface. */ - if_attach(ifp); - ether_ifattach(ifp); - - /* Print additional info when attached. */ - printf(": address %s, ", ether_sprintf(sc->sc_arpcom.ac_enaddr)); - - printf("%s, %dKB memory\n", sc->type_str, sc->mem_size / 1024); - return 0; } /* - * Reset interface. - */ -void -aereset(sc) - struct ae_softc *sc; -{ - int s; - - s = splnet(); - aestop(sc); - aeinit(sc); - splx(s); -} - -/* - * Take interface offline. - */ -void -aestop(sc) - struct ae_softc *sc; -{ - int n = 5000; - - /* Stop everything on the interface, and select page 0 registers. */ - NIC_PUT(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); - - /* - * Wait for interface to enter stopped state, but limit # of checks to - * 'n' (about 5ms). It shouldn't even take 5us on modern DS8390's, but - * just in case it's an old one. - */ - while (((NIC_GET(sc, ED_P0_ISR) & ED_ISR_RST) == 0) && --n); -} - -/* - * Device timeout/watchdog routine. Entered if the device neglects to generate - * an interrupt after a transmit has been started on it. - */ - -void -aewatchdog(ifp) - struct ifnet *ifp; -{ - struct ae_softc *sc = ifp->if_softc; - - log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); - ++sc->sc_arpcom.ac_if.if_oerrors; - - aereset(sc); -} - -/* - * Initialize device. - */ -void -aeinit(sc) - struct ae_softc *sc; -{ - struct ifnet *ifp = &sc->sc_arpcom.ac_if; - u_int8_t mcaf[8]; - int i; - - /* - * Initialize the NIC in the exact order outlined in the NS manual. - * This init procedure is "mandatory"...don't change what or when - * things happen. - */ - - /* Reset transmitter flags. */ - ifp->if_timer = 0; - - sc->txb_inuse = 0; - sc->txb_new = 0; - sc->txb_next_tx = 0; - - /* Set interface for page 0, remote DMA complete, stopped. */ - NIC_PUT(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); - - if (sc->use16bit) { - /* - * Set FIFO threshold to 8, No auto-init Remote DMA, byte - * order=80x86, word-wide DMA xfers, - */ - NIC_PUT(sc, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_WTS | ED_DCR_LS); - } else { - /* Same as above, but byte-wide DMA xfers. */ - NIC_PUT(sc, ED_P0_DCR, ED_DCR_FT1 | ED_DCR_LS); - } - - /* Clear remote byte count registers. */ - NIC_PUT(sc, ED_P0_RBCR0, 0); - NIC_PUT(sc, ED_P0_RBCR1, 0); - - /* Tell RCR to do nothing for now. */ - NIC_PUT(sc, ED_P0_RCR, ED_RCR_MON); - - /* Place NIC in internal loopback mode. */ - NIC_PUT(sc, ED_P0_TCR, ED_TCR_LB0); - - /* Initialize receive buffer ring. */ - NIC_PUT(sc, ED_P0_TPSR, sc->rec_page_start); - NIC_PUT(sc, ED_P0_PSTART, sc->rec_page_start); - - NIC_PUT(sc, ED_P0_PSTOP, sc->rec_page_stop); - NIC_PUT(sc, ED_P0_BNRY, sc->rec_page_start); - - /* - * Clear all interrupts. A '1' in each bit position clears the - * corresponding flag. - */ - NIC_PUT(sc, ED_P0_ISR, 0xff); - - /* - * Enable the following interrupts: receive/transmit complete, - * receive/transmit error, and Receiver OverWrite. - * - * Counter overflow and Remote DMA complete are *not* enabled. - */ - NIC_PUT(sc, ED_P0_IMR, - ED_IMR_PRXE | ED_IMR_PTXE | ED_IMR_RXEE | ED_IMR_TXEE | - ED_IMR_OVWE); - - /* Program command register for page 1. */ - NIC_PUT(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STP); - - /* Copy out our station address. */ - for (i = 0; i < ETHER_ADDR_LEN; ++i) - NIC_PUT(sc, ED_P1_PAR0 + i, sc->sc_arpcom.ac_enaddr[i]); - - /* Set multicast filter on chip. */ - ae_getmcaf(&sc->sc_arpcom, mcaf); - for (i = 0; i < 8; i++) - NIC_PUT(sc, ED_P1_MAR0 + i, mcaf[i]); - - /* - * Set current page pointer to one page after the boundary pointer, as - * recommended in the National manual. - */ - sc->next_packet = sc->rec_page_start + 1; - NIC_PUT(sc, ED_P1_CURR, sc->next_packet); - - /* Program command register for page 0. */ - NIC_PUT(sc, ED_P1_CR, sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STP); - - i = ED_RCR_AB | ED_RCR_AM; - if (ifp->if_flags & IFF_PROMISC) { - /* - * Set promiscuous mode. Multicast filter was set earlier so - * that we should receive all multicast packets. - */ - i |= ED_RCR_PRO | ED_RCR_AR | ED_RCR_SEP; - } - NIC_PUT(sc, ED_P0_RCR, i); - - /* Take interface out of loopback. */ - NIC_PUT(sc, ED_P0_TCR, 0); - - /* Fire up the interface. */ - NIC_PUT(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); - - /* Set 'running' flag, and clear output active flag. */ - ifp->if_flags |= IFF_RUNNING; - ifp->if_flags &= ~IFF_OACTIVE; - - /* ...and attempt to start output. */ - aestart(ifp); -} - -/* - * This routine actually starts the transmission on the interface. - */ -static inline void -ae_xmit(sc) - struct ae_softc *sc; -{ - struct ifnet *ifp = &sc->sc_arpcom.ac_if; - u_short len; - - len = sc->txb_len[sc->txb_next_tx]; - - /* Set NIC for page 0 register access. */ - NIC_PUT(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); - - /* Set TX buffer start page. */ - NIC_PUT(sc, ED_P0_TPSR, sc->tx_page_start + - sc->txb_next_tx * ED_TXBUF_SIZE); - - /* Set TX length. */ - NIC_PUT(sc, ED_P0_TBCR0, len); - NIC_PUT(sc, ED_P0_TBCR1, len >> 8); - - /* Set page 0, remote DMA complete, transmit packet, and *start*. */ - NIC_PUT(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_0 | ED_CR_TXP | - ED_CR_STA); - - /* Point to next transmit buffer slot and wrap if necessary. */ - sc->txb_next_tx++; - if (sc->txb_next_tx == sc->txb_cnt) - sc->txb_next_tx = 0; - - /* Set a timer just in case we never hear from the board again. */ - ifp->if_timer = 2; -} - -/* - * Start output on interface. - * We make two assumptions here: - * 1) that the current priority is set to splnet _before_ this code - * is called *and* is returned to the appropriate priority after - * return - * 2) that the IFF_OACTIVE flag is checked before this code is called - * (i.e. that the output part of the interface is idle) - */ -void -aestart(ifp) - struct ifnet *ifp; -{ - struct ae_softc *sc = ifp->if_softc; - struct mbuf *m0; - int buffer; - int len; - - if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) - return; - -outloop: - /* See if there is room to put another packet in the buffer. */ - if (sc->txb_inuse == sc->txb_cnt) { - /* No room. Indicate this to the outside world and exit. */ - ifp->if_flags |= IFF_OACTIVE; - return; - } - IF_DEQUEUE(&ifp->if_snd, m0); - if (m0 == NULL) - return; - - /* We need to use m->m_pkthdr.len, so require the header */ - if ((m0->m_flags & M_PKTHDR) == 0) - panic("aestart: no header mbuf"); - -#if NBPFILTER > 0 - /* Tap off here if there is a BPF listener. */ - if (ifp->if_bpf) - bpf_mtap(ifp->if_bpf, m0, BPF_DIRECTION_OUT); -#endif - - /* txb_new points to next open buffer slot. */ - buffer = (sc->txb_new * ED_TXBUF_SIZE) << ED_PAGE_SHIFT; - - len = ae_put(sc, m0, buffer); -#ifdef DIAGNOSTIC - if (len != m0->m_pkthdr.len) - printf("aestart: len %d != m0->m_pkthdr.len %d.\n", - len, m0->m_pkthdr.len); -#endif - len = m0->m_pkthdr.len; - - m_freem(m0); - sc->txb_len[sc->txb_new] = max(len, ETHER_MIN_LEN); - - /* Start the first packet transmitting. */ - if (sc->txb_inuse == 0) - ae_xmit(sc); - - /* Point to next buffer slot and wrap if necessary. */ - if (++sc->txb_new == sc->txb_cnt) - sc->txb_new = 0; - - sc->txb_inuse++; - - /* Loop back to the top to possibly buffer more packets. */ - goto outloop; -} - -/* - * Ethernet interface receiver interrupt. - */ -static inline void -ae_rint(sc) - struct ae_softc *sc; -{ - u_char boundary, current; - u_short len; - u_char nlen; - u_int8_t *lenp; - struct ae_ring packet_hdr; - int packet_ptr; - -loop: - /* Set NIC to page 1 registers to get 'current' pointer. */ - NIC_PUT(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_1 | ED_CR_STA); - - /* - * 'sc->next_packet' is the logical beginning of the ring-buffer - i.e. - * it points to where new data has been buffered. The 'CURR' (current) - * register points to the logical end of the ring-buffer - i.e. it - * points to where additional new data will be added. We loop here - * until the logical beginning equals the logical end (or in other - * words, until the ring-buffer is empty). - */ - current = NIC_GET(sc, ED_P1_CURR); - if (sc->next_packet == current) - return; - - /* Set NIC to page 0 registers to update boundary register. */ - NIC_PUT(sc, ED_P1_CR, sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); - - do { - /* Get pointer to this buffer's header structure. */ - packet_ptr = sc->mem_ring + - ((sc->next_packet - sc->rec_page_start) << ED_PAGE_SHIFT); - - /* - * The byte count includes a 4 byte header that was added by - * the NIC. - */ - bus_space_read_region_1(sc->sc_buft, sc->sc_bufh, - packet_ptr, (u_int8_t *)&packet_hdr, - sizeof(struct ae_ring)); - lenp = (u_int8_t *)&packet_hdr.count; /* sigh. */ - len = lenp[0] | (lenp[1] << 8); - packet_hdr.count = len; - - /* - * Try do deal with old, buggy chips that sometimes duplicate - * the low byte of the length into the high byte. We do this - * by simply ignoring the high byte of the length and always - * recalculating it. - * - * NOTE: sc->next_packet is pointing at the current packet. - */ - if (packet_hdr.next_packet >= sc->next_packet) - nlen = (packet_hdr.next_packet - sc->next_packet); - else - nlen = ((packet_hdr.next_packet - sc->rec_page_start) + - (sc->rec_page_stop - sc->next_packet)); - --nlen; - if ((len & ED_PAGE_MASK) + sizeof(packet_hdr) > ED_PAGE_SIZE) - --nlen; - len = (len & ED_PAGE_MASK) | (nlen << ED_PAGE_SHIFT); -#ifdef DIAGNOSTIC - if (len != packet_hdr.count) { - printf("%s: length does not match next packet pointer\n" , sc->sc_dev.dv_xname); - printf("%s: len %04x nlen %04x start %02x first %02x curr %02x next %02x stop %02x\n", - sc->sc_dev.dv_xname, packet_hdr.count, len, - sc->rec_page_start, sc->next_packet, current, - packet_hdr.next_packet, sc->rec_page_stop); - } -#endif - - /* - * Be fairly liberal about what we allow as a "reasonable" - * length so that a [crufty] packet will make it to BPF (and - * can thus be analyzed). Note that all that is really - * important is that we have a length that will fit into one - * mbuf cluster or less; the upper layer protocols can then - * figure out the length from their own length field(s). - */ - if (len <= MCLBYTES && - packet_hdr.next_packet >= sc->rec_page_start && - packet_hdr.next_packet < sc->rec_page_stop) { - /* Go get packet. */ - aeread(sc, packet_ptr + sizeof(struct ae_ring), - len - sizeof(struct ae_ring)); - ++sc->sc_arpcom.ac_if.if_ipackets; - } else { - /* Really BAD. The ring pointers are corrupted. */ - log(LOG_ERR, - "%s: NIC memory corrupt - invalid packet length %d\n", - sc->sc_dev.dv_xname, len); - ++sc->sc_arpcom.ac_if.if_ierrors; - aereset(sc); - return; - } - - /* Update next packet pointer. */ - sc->next_packet = packet_hdr.next_packet; - - /* - * Update NIC boundary pointer - being careful to keep it one - * buffer behind (as recommended by NS databook). - */ - boundary = sc->next_packet - 1; - if (boundary < sc->rec_page_start) - boundary = sc->rec_page_stop - 1; - NIC_PUT(sc, ED_P0_BNRY, boundary); - } while (sc->next_packet != current); - - goto loop; -} - -/* Ethernet interface interrupt processor. */ -int -aeintr(void *arg) -{ - struct ae_softc *sc = (struct ae_softc *)arg; - struct ifnet *ifp = &sc->sc_arpcom.ac_if; - u_char isr; - - /* Set NIC to page 0 registers. */ - NIC_PUT(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); - - isr = NIC_GET(sc, ED_P0_ISR); - if (!isr) - return (0); - - /* Loop until there are no more new interrupts. */ - for (;;) { - /* - * Reset all the bits that we are 'acknowledging' by writing a - * '1' to each bit position that was set. - * (Writing a '1' *clears* the bit.) - */ - NIC_PUT(sc, ED_P0_ISR, isr); - - /* - * Handle transmitter interrupts. Handle these first because - * the receiver will reset the board under some conditions. - */ - if (isr & (ED_ISR_PTX | ED_ISR_TXE)) { - u_char collisions = NIC_GET(sc, ED_P0_NCR) & 0x0f; - - /* - * Check for transmit error. If a TX completed with an - * error, we end up throwing the packet away. Really - * the only error that is possible is excessive - * collisions, and in this case it is best to allow the - * automatic mechanisms of TCP to backoff the flow. Of - * course, with UDP we're screwed, but this is expected - * when a network is heavily loaded. - */ - (void) NIC_GET(sc, ED_P0_TSR); - if (isr & ED_ISR_TXE) { - /* - * Excessive collisions (16). - */ - if ((NIC_GET(sc, ED_P0_TSR) & ED_TSR_ABT) - && (collisions == 0)) { - /* - * When collisions total 16, the P0_NCR - * will indicate 0, and the TSR_ABT is - * set. - */ - collisions = 16; - } - - /* Update output errors counter. */ - ++ifp->if_oerrors; - } else { - /* - * Update total number of successfully - * transmitted packets. - */ - ++ifp->if_opackets; - } - - /* Done with the buffer. */ - sc->txb_inuse--; - - /* Clear watchdog timer. */ - ifp->if_timer = 0; - ifp->if_flags &= ~IFF_OACTIVE; - - /* - * Add in total number of collisions on last - * transmission. - */ - ifp->if_collisions += collisions; - - /* - * Decrement buffer in-use count if not zero (can only - * be zero if a transmitter interrupt occurred while not - * actually transmitting). - * If data is ready to transmit, start it transmitting, - * otherwise defer until after handling receiver. - */ - if (sc->txb_inuse > 0) - ae_xmit(sc); - } - - /* Handle receiver interrupts. */ - if (isr & (ED_ISR_PRX | ED_ISR_RXE | ED_ISR_OVW)) { - /* - * Overwrite warning. In order to make sure that a - * lockup of the local DMA hasn't occurred, we reset - * and re-init the NIC. The NSC manual suggests only a - * partial reset/re-init is necessary - but some chips - * seem to want more. The DMA lockup has been seen - * only with early rev chips - Methinks this bug was - * fixed in later revs. -DG - */ - if (isr & ED_ISR_OVW) { - ++ifp->if_ierrors; -#ifdef DIAGNOSTIC - log(LOG_WARNING, - "%s: warning - receiver ring buffer overrun\n", - sc->sc_dev.dv_xname); -#endif - /* Stop/reset/re-init NIC. */ - aereset(sc); - } else { - /* - * Receiver Error. One or more of: CRC error, - * frame alignment error FIFO overrun, or - * missed packet. - */ - if (isr & ED_ISR_RXE) { - ++ifp->if_ierrors; -#ifdef AE_DEBUG - printf("%s: receive error %x\n", - sc->sc_dev.dv_xname, - NIC_GET(sc, ED_P0_RSR)); -#endif - } - - /* - * Go get the packet(s) - * XXX - Doing this on an error is dubious - * because there shouldn't be any data to get - * (we've configured the interface to not - * accept packets with errors). - */ - ae_rint(sc); - } - } - - /* - * If it looks like the transmitter can take more data, attempt - * to start output on the interface. This is done after - * handling the receiver to give the receiver priority. - */ - aestart(ifp); - - /* - * Return NIC CR to standard state: page 0, remote DMA - * complete, start (toggling the TXP bit off, even if was just - * set in the transmit routine, is *okay* - it is 'edge' - * triggered from low to high). - */ - NIC_PUT(sc, ED_P0_CR, sc->cr_proto | ED_CR_PAGE_0 | ED_CR_STA); - - /* - * If the Network Talley Counters overflow, read them to reset - * them. It appears that old 8390's won't clear the ISR flag - * otherwise - resulting in an infinite loop. - */ - if (isr & ED_ISR_CNT) { - (void)NIC_GET(sc, ED_P0_CNTR0); - (void)NIC_GET(sc, ED_P0_CNTR1); - (void)NIC_GET(sc, ED_P0_CNTR2); - } - - isr = NIC_GET(sc, ED_P0_ISR); - if (!isr) - break; - } - return (1); -} - -/* - * Process an ioctl request. - * XXX - This code needs some work - it looks pretty ugly. - */ -int -aeioctl(ifp, cmd, data) - struct ifnet *ifp; - u_long cmd; - caddr_t data; -{ - struct ae_softc *sc = ifp->if_softc; - struct ifaddr *ifa = (struct ifaddr *) data; - struct ifreq *ifr = (struct ifreq *) data; - int s, error = 0; - - s = splnet(); - - if ((error = ether_ioctl(ifp, &sc->sc_arpcom, cmd, data)) > 0) { - splx(s); - return error; - } - - switch (cmd) { - - case SIOCSIFADDR: - ifp->if_flags |= IFF_UP; - - switch (ifa->ifa_addr->sa_family) { -#ifdef INET - case AF_INET: - aeinit(sc); - arp_ifinit(&sc->sc_arpcom, ifa); - break; -#endif - default: - aeinit(sc); - break; - } - break; - - case SIOCSIFFLAGS: - if ((ifp->if_flags & IFF_UP) == 0 && - (ifp->if_flags & IFF_RUNNING) != 0) { - /* - * If interface is marked down and it is running, then - * stop it. - */ - aestop(sc); - ifp->if_flags &= ~IFF_RUNNING; - } else - if ((ifp->if_flags & IFF_UP) != 0 && - (ifp->if_flags & IFF_RUNNING) == 0) { - /* - * If interface is marked up and it is stopped, * then start it. - */ - aeinit(sc); - } else { - /* - * Reset the interface to pick up changes in any - * other flags that affect hardware registers. - */ - aestop(sc); - aeinit(sc); - } - break; - - case SIOCADDMULTI: - case SIOCDELMULTI: - /* Update our multicast list. */ - error = (cmd == SIOCADDMULTI) ? - ether_addmulti(ifr, &sc->sc_arpcom) : - ether_delmulti(ifr, &sc->sc_arpcom); - - if (error == ENETRESET) { - /* - * Multicast list has changed; set the hardware filter - * accordingly. - */ - if (ifp->if_flags & IFF_RUNNING) { - aestop(sc); /* XXX for ds_setmcaf? */ - aeinit(sc); - } - error = 0; - } - break; - - default: - error = EINVAL; - break; - } - - splx(s); - return (error); -} - -/* - * Retreive packet from shared memory and send to the next level up via - * ether_input(). If there is a BPF listener, give a copy to BPF, too. - */ -void -aeread(sc, buf, len) - struct ae_softc *sc; - int buf; - int len; -{ - struct ifnet *ifp = &sc->sc_arpcom.ac_if; - struct mbuf *m; - - /* Pull packet off interface. */ - m = aeget(sc, buf, len); - if (m == NULL) { - ifp->if_ierrors++; - return; - } - - ifp->if_ipackets++; - -#if NBPFILTER > 0 - /* - * Check if there's a BPF listener on this interface. - * If so, hand off the raw packet to bpf. - */ - if (ifp->if_bpf) - bpf_mtap(ifp->if_bpf, m, BPF_DIRECTION_IN); -#endif - - ether_input_mbuf(ifp, m); -} - -/* - * Supporting routines. - */ - -/* - * Given a source and destination address, copy 'amount' of a packet from the - * ring buffer into a linear destination buffer. Takes into account ring-wrap. - */ -static inline int -ae_ring_copy(sc, src, dst, amount) - struct ae_softc *sc; - int src; - caddr_t dst; - int amount; -{ - bus_space_tag_t bst = sc->sc_buft; - bus_space_handle_t bsh = sc->sc_bufh; - int tmp_amount; - - /* Does copy wrap to lower addr in ring buffer? */ - if (src + amount > sc->mem_size) { - tmp_amount = sc->mem_size - src; - - /* Copy amount up to end of NIC memory. */ - bus_space_read_region_1(bst, bsh, src, dst, tmp_amount); - - amount -= tmp_amount; - src = sc->mem_ring; - dst += tmp_amount; - } - bus_space_read_region_1(bst, bsh, src, dst, amount); - - return (src + amount); -} - -/* - * Copy data from receive buffer to end of mbuf chain allocate additional mbufs - * as needed. Return pointer to last mbuf in chain. - * sc = ae info (softc) - * src = pointer in ae ring buffer - * dst = pointer to last mbuf in mbuf chain to copy to - * amount = amount of data to copy - */ -struct mbuf * -aeget(sc, src, total_len) - struct ae_softc *sc; - int src; - u_short total_len; -{ - struct ifnet *ifp = &sc->sc_arpcom.ac_if; - struct mbuf *top, **mp, *m; - int len; - - MGETHDR(m, M_DONTWAIT, MT_DATA); - if (m == NULL) - return (NULL); - - m->m_pkthdr.rcvif = ifp; - m->m_pkthdr.len = total_len; - len = MHLEN; - top = 0; - mp = ⊤ - - while (total_len > 0) { - if (top) { - MGET(m, M_DONTWAIT, MT_DATA); - if (m == NULL) { - m_freem(top); - return (NULL); - } - len = MLEN; - } - if (total_len >= MINCLSIZE) { - MCLGET(m, M_DONTWAIT); - if ((m->m_flags & M_EXT) == 0) { - m_free(m); - m_freem(top); - return (NULL); - } - len = MCLBYTES; - } - m->m_len = len = min(total_len, len); - src = ae_ring_copy(sc, src, mtod(m, caddr_t), len); - total_len -= len; - *mp = m; - mp = &m->m_next; - } - - return top; -} - -/* - * Compute the multicast address filter from the list of multicast addresses we - * need to listen to. - */ -void -ae_getmcaf(ac, af) - struct arpcom *ac; - u_char *af; -{ - struct ifnet *ifp = &ac->ac_if; - struct ether_multi *enm; - u_char *cp, c; - u_int32_t crc; - int i, len; - struct ether_multistep step; - - /* - * Set up multicast address filter by passing all multicast addresses - * through a crc generator, and then using the high order 6 bits as an - * index into the 64 bit logical address filter. The high order bit - * selects the word, while the rest of the bits select the bit within - * the word. - */ - - if (ifp->if_flags & IFF_PROMISC) { - ifp->if_flags |= IFF_ALLMULTI; - for (i = 0; i < 8; i++) - af[i] = 0xff; - return; - } - for (i = 0; i < 8; i++) - af[i] = 0; - ETHER_FIRST_MULTI(step, ac, enm); - while (enm != NULL) { - if (bcmp(enm->enm_addrlo, enm->enm_addrhi, - sizeof(enm->enm_addrlo)) != 0) { - /* - * We must listen to a range of multicast addresses. - * For now, just accept all multicasts, rather than - * trying to set only those filter bits needed to match - * the range. (At this time, the only use of address - * ranges is for IP multicast routing, for which the - * range is big enough to require all bits set.) - */ - ifp->if_flags |= IFF_ALLMULTI; - for (i = 0; i < 8; i++) - af[i] = 0xff; - return; - } - cp = enm->enm_addrlo; - crc = 0xffffffff; - for (len = sizeof(enm->enm_addrlo); --len >= 0;) { - c = *cp++; - for (i = 8; --i >= 0;) { - if (((crc & 0x80000000) ? 1 : 0) ^ (c & 0x01)) { - crc <<= 1; - crc ^= 0x04c11db6 | 1; - } else - crc <<= 1; - c >>= 1; - } - } - /* Just want the 6 most significant bits. */ - crc >>= 26; - - /* Turn on the corresponding bit in the filter. */ - af[crc >> 3] |= 1 << (crc & 0x7); - - ETHER_NEXT_MULTI(step, enm); - } - ifp->if_flags &= ~IFF_ALLMULTI; -} - -/* - * Copy packet from mbuf to the board memory - * - * Currently uses an extra buffer/extra memory copy, - * unless the whole packet fits in one mbuf. + * Copy packet from mbuf to the board memory Currently uses an extra + * buffer/extra memory copy, unless the whole packet fits in one mbuf. * + * As in the test_mem function, we use word-wide writes. */ int -ae_put(sc, m, buf) - struct ae_softc *sc; - struct mbuf *m; - int buf; +ae_write_mbuf(struct dp8390_softc *sc, struct mbuf *m, int buf) { u_char *data, savebyte[2]; int len, wantbyte; @@ -1075,9 +165,9 @@ ae_put(sc, m, buf) } /* Output contiguous words. */ if (len > 1) { - bus_space_write_region_2(sc->sc_buft, - sc->sc_bufh, buf, (u_int16_t *)data, - len >> 1); + bus_space_write_region_2( + sc->sc_buft, sc->sc_bufh, + buf, (u_int16_t *)data, len >> 1); buf += len & ~1; data += len & ~1; len &= 1; @@ -1090,10 +180,21 @@ ae_put(sc, m, buf) } } + len = ETHER_PAD_LEN - totlen; if (wantbyte) { savebyte[1] = 0; bus_space_write_region_2(sc->sc_buft, sc->sc_bufh, buf, (u_int16_t *)savebyte, 1); + buf += 2; + if (len > 0) + totlen++; + len--; + } + /* if sent data is shorter than EHTER_PAD_LEN, put 0 to padding */ + if (len > 0) { + bus_space_set_region_2(sc->sc_buft, sc->sc_bufh, buf, 0, + len >> 1); + totlen = ETHER_PAD_LEN; } return (totlen); } |