/* $NetBSD: if_ie.c,v 1.54 2023/12/20 06:13:59 thorpej Exp $ */ /* * Copyright (c) 1995 Melvin Tang-Richardson. * All rights reserved. * * This driver is a major hash up of src/sys/dev/isa/if_ie.c and * src/sys/arch/acorn32/podulebus/kgdb_ie.c Please refer to copyright * notices from them too. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by RiscBSD. * 4. The name of the company nor the name of the author may be used to * endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * RiscBSD kernel project * * if_ie.c * * Ether 1 podule driver * * Created : 26/06/95 */ /* * This driver is at its last beta release. It should not cause * any problems (Touch wood) * * If it passes field tests again. This will constitute the realse * version. */ #include __KERNEL_RCSID(0, "$NetBSD: if_ie.c,v 1.54 2023/12/20 06:13:59 thorpej Exp $"); #define IGNORE_ETHER1_IDROM_CHECKSUM /* Standard podule includes */ #include "opt_inet.h" #include "opt_ns.h" #include #include #include #include #include #include #include #include #include /* Include for interface to the net and ethernet subsystems */ #include #include #include #include #include #include #include #include #ifdef INET #include #include #include #include #include #endif /* Import our data structures */ #include "if_iereg.h" /* BPF support */ #include /* Some useful defines and macros */ #define PODULE_IRQ_PENDING (1) #define NFRAMES (16) /* number of frame to allow for receive */ #define NRXBUF (48) /* number of receive buffers to allocate */ #define IE_RXBUF_SIZE (256) /* receive buf size */ #define NTXBUF (2) /* number of transmit buffers to allocate */ #define IE_TXBUF_SIZE (1522) /* size of tx buffer */ #define PWriteShort(a,b) WriteWord(a,(b)<<16|(b)) #define xoffsetof(type, member) (offsetof(type, member) << 1) /* Some data structures local to this file */ struct ie_softc { device_t sc_dev; int sc_podule_number; podule_t *sc_podule; irqhandler_t sc_ih; int sc_flags; #define IE_BROKEN 1 int sc_iobase; int sc_fastbase; int sc_rom; int sc_ram; int sc_control; struct ethercom sc_ethercom; u_short promisc; int sc_irqmode; u_long rframes[NFRAMES]; u_long rbuffs[NRXBUF]; u_long cbuffs[NRXBUF]; int rfhead, rftail, rbhead, rbtail; u_long xmit_cmds[NTXBUF]; u_long xmit_buffs[NTXBUF]; u_long xmit_cbuffs[NTXBUF]; int xmit_count; int xmit_free; int xchead; int xctail; }; /* Function and data prototypes */ static void host2ie( struct ie_softc *sc, void *src, u_long dest, int size ); static void ie2host( struct ie_softc *sc, u_long src, void *dest, int size ); static void iezero( struct ie_softc *sc, u_long p, int size ); void iereset( struct ie_softc *sc ); void iewatchdog( struct ifnet *ifp ); int ieioctl( struct ifnet *ifp, u_long cmd, void *data ); void iestart( struct ifnet *ifp ); int iestop( struct ie_softc *sc ); int ieinit( struct ie_softc *sc ); int ieintr( void *arg ); void ietint( struct ie_softc *sc ); /* A whopper of a function */ static int command_and_wait( struct ie_softc *sc, u_short cmd, struct ie_sys_ctl_block *pscb, void *pcmd, int ocmd, int scmd, int mask ); int ieprobe(device_t, cfdata_t, void *); void ieattach(device_t, device_t, void *); static inline void ie_cli(struct ie_softc *); static inline void ieattn(struct ie_softc *); static inline void setpage(struct ie_softc *, u_long); static void ie_ack(struct ie_softc *, u_short); void PWriteShorts(char *, char *, int); void ReadShorts(char *, char *, int); static void run_tdr(struct ie_softc *); u_long setup_rfa(struct ie_softc *, u_long); static inline int ie_buflen(struct ie_softc *, int); static inline int ie_packet_len(struct ie_softc *); struct mbuf *ieget(struct ie_softc *, int *); void ie_drop_packet_buffer(struct ie_softc *); void ie_read_frame(struct ie_softc *, int num); void ierint(struct ie_softc *); void iexmit(struct ie_softc *); static void start_receiver(struct ie_softc *); /* * Our cfattach structure for the autoconfig system to chew on */ CFATTACH_DECL_NEW(ie, sizeof(struct ie_softc), ieprobe, ieattach, NULL, NULL); /* Let's go! */ /* * Clear all pending interrupts from the i82586 chip */ static inline void ie_cli(struct ie_softc *sc) { WriteByte(sc->sc_fastbase + (IE_CONTROL<<2), IE_CONT_CLI); } /* * Wake the i82586 chip up and get it to do something */ static inline void ieattn(struct ie_softc *sc) { WriteByte ( sc->sc_control + (IE_CONTROL<<2), IE_CONT_ATTN ); } /* * Set the podule page register to bring a given address into view */ static inline void setpage(struct ie_softc *sc, u_long off) { WriteByte ( sc->sc_control + (IE_PAGE<<2), IE_COFF2PAGE(off) ); } /* * Ack the i82586 */ static void ie_ack(struct ie_softc *sc, u_short mask) { u_short stat; int i; setpage(sc, IE_IBASE + IE_SCB_OFF ); stat = ReadShort ( sc->sc_ram + IE_COFF2POFF(IE_IBASE+IE_SCB_OFF) + (xoffsetof(struct ie_sys_ctl_block, ie_status)) ); PWriteShort ( sc->sc_ram + IE_COFF2POFF(IE_IBASE+IE_SCB_OFF) + (xoffsetof(struct ie_sys_ctl_block, ie_command)), stat & mask ); ieattn(sc); for ( i=4000; --i>=0; ) { if ( !ReadShort(sc->sc_ram + IE_COFF2POFF(IE_IBASE+IE_SCB_OFF) + (xoffsetof(struct ie_sys_ctl_block, ie_command))) ) break; delay(100); } if ( i<=0 ) printf ( "ie: command timed out\n" ); ie_cli(sc); } /* * This routine does the checksumming for the idrom */ #ifndef IGNORE_ETHER1_IDROM_CHECKSUM static u_long crc32(u_char *p, int l) { u_long crc=-1; int i, b; while ( --l >= 0 ) { b = *p++; for ( i=8; --i >= 0; b>>=1 ) if ((b&1)^(crc>>31)) crc=(crc<<1)^0x4c11db7; else crc<<=1; } return crc; } #endif /* * Probe for the ether1 card. return 1 on success 0 on failure */ int ieprobe(device_t parent, cfdata_t cf, void *aux) { struct podule_attach_args *pa = aux; /* Look for a network slot interface */ return (pa->pa_product == PODULE_ETHER1); } /* * Attach our driver to the interfaces it uses */ void ieattach(device_t parent, device_t self, void *aux) { struct ie_softc *sc = device_private(self); struct podule_attach_args *pa = aux; struct ifnet *ifp = &sc->sc_ethercom.ec_if; int i; char idrom[32]; uint8_t hwaddr[ETHER_ADDR_LEN]; /* Check a few things about the attach args */ if (pa->pa_podule_number == -1) panic("Podule has disappeared !"); sc->sc_dev = self; sc->sc_podule_number = pa->pa_podule_number; sc->sc_podule = pa->pa_podule; podules[sc->sc_podule_number].attached = 1; /* * MESS MESS MESS * * This needs a serious clean up. Alot of this code was in the probe function * but required the softc structure. As a temporary measure until I rewrite it * I have just bolted in the probe code here. */ /* Index some podule areas */ sc->sc_iobase = sc->sc_podule->sync_base; /* OBSOLETE */ sc->sc_fastbase = sc->sc_podule->fast_base; /* OBSOLETE */ sc->sc_rom = sc->sc_podule->sync_base; sc->sc_control = sc->sc_podule->fast_base; sc->sc_ram = sc->sc_podule->fast_base + IE_MEMOFF; /* Set the page mask to something know and neutral */ setpage(sc, IE_SCB_OFF); /* Fetch the first part of the idrom */ for ( i=0; i<16; i++ ) idrom[i] = ReadByte ( sc->sc_rom + (i<<2) ); /* Verify the podulebus probe incase RiscOS lied */ if ( ReadByte ( sc->sc_rom + (3<<2) ) != 0x03 ) { printf(": Ether1 ROM probably broken. ECID corrupt\n"); sc->sc_flags |= IE_BROKEN; return; } /* Reset the 82586 */ WriteByte ( sc->sc_fastbase + (IE_CONTROL<<2), IE_CONT_RESET ); delay(1000); WriteByte ( sc->sc_fastbase + (IE_CONTROL<<2), 0 ); delay(10000); /* Clear pending interrupts */ ie_cli (sc); /* Setup SCP */ { struct ie_sys_conf_ptr scp; bzero (&scp, sizeof(scp) ); scp.ie_iscp_ptr = (void *)IE_ISCP_ADDR; host2ie(sc, &scp, IE_SCP_ADDR, sizeof (scp) ); } /* Setup ISCP */ { struct ie_int_sys_conf_ptr iscp; bzero ( &iscp, sizeof(iscp) ); iscp.ie_busy = 1; iscp.ie_base = (void *)IE_IBASE; iscp.ie_scb_offset = IE_SCB_OFF; host2ie(sc, &iscp, IE_ISCP_ADDR, sizeof(iscp) ); } /* Initialise the control block */ iezero ( sc, IE_IBASE + IE_SCB_OFF, sizeof(struct ie_sys_ctl_block) ); ieattn(sc); /* Wait for not busy */ setpage ( sc, IE_ISCP_ADDR ); for ( i=10000; --i>=0; ) { if ( !ReadShort( sc->sc_ram + IE_COFF2POFF(IE_ISCP_ADDR) + ( xoffsetof(struct ie_int_sys_conf_ptr, ie_busy)) ) ) break; delay (10); } /* If the busy didn't go low, the i82586 is broken or too slow */ if ( i<=0 ) { printf ( ": ether1 chipset didn't respond\n" ); sc->sc_flags |= IE_BROKEN; return; } /* Ensure that the podule sends interrupts */ for ( i=1000; --i>=0 ; ) { if ( ReadByte(sc->sc_rom + 0) & PODULE_IRQ_PENDING ) break; delay (10); } /* If we didn't see the interrupt then the IRQ line is broken */ if ( i<=0 ) { printf ( ": interrupt from chipset didn't reach host\n" ); sc->sc_flags |= IE_BROKEN; return; } /* Ack our little test operation */ ie_ack(sc,IE_ST_WHENCE); ie_cli (sc); /* Get second part of idrom */ for ( i=16; i<32; i++ ) idrom[i] = ReadByte ( sc->sc_rom + (i<<2) ); /* This checksum always fails. For some reason the first 16 */ /* bytes are duplicated in the second 16 bytes, the checksum */ /* should be at location 28 it is clearly not */ /* It is possible that this ether1 card is buggered */ #ifndef IGNORE_ETHER1_IDROM_CHECKSUM if ( crc32(idrom,28) != *(u_long *)(idrom+28) ) { printf ( "ie: ether1 idrom failed checksum %08x!=%08x\n", crc32(idrom,28), *(u_long *)(idrom+28)); for ( i=0; i<32; i+=8 ) { printf ( "IDROM: %02x %02x %02x %02x %02x %02x %02x %02x\n", idrom[0+i], idrom[1+i], idrom[2+i], idrom[3+i], idrom[4+i], idrom[5+i], idrom[6+i], idrom[7+i] ); } printf ( "ie: I'll ignore this fact for now!\n" ); } #endif /* Get our ethernet address. Do explicit copy */ for ( i=0; iif_xname, device_xname(sc->sc_dev), IFNAMSIZ); ifp->if_softc = sc; ifp->if_start = iestart; ifp->if_ioctl = ieioctl; ifp->if_watchdog = iewatchdog; ifp->if_flags = IFF_BROADCAST; /* Signed, dated then sent */ if_attach (ifp); if_deferred_start_init(ifp, NULL); ether_ifattach(ifp, hwaddr); /* "Hmm," said nuts, "what if the attach fails" */ /* Write some pretty things on the announcement line */ printf ( ": %s using %dk card ram", ether_sprintf(hwaddr), ((NRXBUF*IE_RXBUF_SIZE)+(NTXBUF*IE_TXBUF_SIZE))/1024 ); sc->sc_ih.ih_func = ieintr; sc->sc_ih.ih_arg = sc; sc->sc_ih.ih_level = IPL_NET; sc->sc_ih.ih_name = "net: ie"; sc->sc_ih.ih_maskaddr = sc->sc_podule->irq_addr; sc->sc_ih.ih_maskbits = sc->sc_podule->irq_mask; if (irq_claim(sc->sc_podule->interrupt, &sc->sc_ih)) { sc->sc_irqmode = 0; printf(" POLLED"); panic("%s: Cannot install IRQ handler", device_xname(sc->sc_dev)); } else { sc->sc_irqmode = 1; printf(" IRQ"); } printf("\n"); } /* * Oh no!! Where's my shorts!!! I'm sure I put them on this morning */ void PWriteShorts(char *src, char *dest, int cnt) { for (cnt /= 2; --cnt >= 0; ) { PWriteShort(dest, *(u_short *)src); src+=2; dest+=4; } } void ReadShorts(char *src, char *dest, int cnt) { for (cnt /= 2; --cnt >= 0; ) { *(u_short *)dest = ReadShort(src); src+=4; dest+=2; } } /* * A bcopy or memcpy to adapter ram. It handles the page register for you * so you dont have to worry about the ram windowing */ static void host2ie(struct ie_softc *sc, void *src, u_long dest, int size) { int cnt; char *sptr = src; #ifdef DIAGNOSTIC if (size & 1) panic("host2ie"); #endif while (size > 0) { cnt = IE_PAGESIZE - dest % IE_PAGESIZE; if (cnt > size) cnt = size; setpage(sc, dest); PWriteShorts(sptr, (char *)sc->sc_ram + IE_COFF2POFF(dest), cnt); sptr+=cnt; dest+=cnt; size-=cnt; } } static void ie2host(struct ie_softc *sc, u_long src, void *dest, int size) { int cnt; char *dptr = dest; #ifdef DIAGNOSTIC if (size & 1) panic ( "ie2host" ); #endif while (size > 0) { cnt = IE_PAGESIZE - src % IE_PAGESIZE; if (cnt > size) cnt = size; setpage(sc, src); ReadShorts((char *)sc->sc_ram + IE_COFF2POFF(src), dptr, cnt); src+=cnt; dptr+=cnt; size-=cnt; } } /* * Like a bzero or memset 0 for adapter memory. It handles the page * register so you dont have to worry about it */ static void iezero(struct ie_softc *sc, u_long p, int size) { int cnt; while (size > 0) { cnt = IE_PAGESIZE - p % IE_PAGESIZE; if (cnt > size) cnt=size; setpage(sc, p); memset((char *)sc->sc_ram + IE_COFF2POFF(p), 0, 2*cnt); p += cnt; size -= cnt; } } /* * I/O Control interface to the kernel, entry point here */ int ieioctl(struct ifnet *ifp, unsigned long cmd, void *data) { struct ie_softc *sc = ifp->if_softc; struct ifaddr *ifa = (struct ifaddr *)data; int s; int error=0; s=splnet(); switch ( cmd ) { case SIOCINITIFADDR: ifp->if_flags |= IFF_UP; switch (ifa->ifa_addr->sa_family ) { #ifdef INET case AF_INET: ieinit(sc); arp_ifinit(ifp, ifa ); break; #endif default: ieinit(sc); break; } break; #define IZSET(a,b) ((a->if_flags&b)!=0) #define IZCLR(a,b) ((a->if_flags&b)==0) #define DOSET(a,b) (a->if_flags|=b) #define DOCLR(a,b) (a->if_flags&=~b) case SIOCSIFFLAGS: if ((error = ifioctl_common(ifp, cmd, data)) != 0) break; sc->promisc = ifp->if_flags & ( IFF_PROMISC | IFF_ALLMULTI ); if ( IZCLR(ifp,IFF_UP) && IZSET(ifp,IFF_RUNNING) ) { /* Interface was marked down and its running so stop it */ iestop(sc); DOCLR(ifp,IFF_RUNNING); } else if ( IZSET(ifp,IFF_UP) && IZCLR(ifp,IFF_RUNNING) ) { /* Just marked up and we're not running so start it */ ieinit(sc); } else { /* else reset to invoke changes in other registers */ iestop(sc); ieinit(sc); } default: error = ether_ioctl(ifp, cmd, data); break; } (void)splx(s); return error; } /* * Reset the card. Completely. */ void iereset(struct ie_softc *sc) { struct ie_sys_ctl_block scb; int s = splnet(); iestop(sc); ie2host(sc, IE_IBASE + IE_SCB_OFF, &scb, sizeof scb); if (command_and_wait(sc, IE_RU_ABORT|IE_CU_ABORT, 0, 0, 0, 0, 0)) printf("ie0: abort commands timed out\n"); if (command_and_wait(sc, IE_RU_DISABLE|IE_CU_STOP, 0, 0, 0, 0, 0)) printf("ie0: abort commands timed out\n"); ieinit(sc); (void)splx(s); } /* * Watchdog entry point. This is the entry for the kernel to call us */ void iewatchdog(struct ifnet *ifp) { struct ie_softc *sc = ifp->if_softc; log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev)); if_statinc(ifp, if_oerrors); iereset(sc); } /* * Start the time-domain-refloctometer running */ static void run_tdr(struct ie_softc *sc) { struct ie_sys_ctl_block scb; u_long ptr = IE_IBASE + IE_SCB_OFF + sizeof scb; struct ie_tdr_cmd cmd; int result; bzero ( &scb, sizeof(scb) ); bzero ( &cmd, sizeof(cmd) ); cmd.com.ie_cmd_status = 0; cmd.com.ie_cmd_cmd = IE_CMD_TDR | IE_CMD_LAST; cmd.com.ie_cmd_link = 0xffff; cmd.ie_tdr_time = 0; scb.ie_command_list = (u_short)ptr; result=0; if ( command_and_wait(sc, IE_CU_START, &scb, &cmd, ptr, sizeof cmd, IE_STAT_COMPL) ) { result = 0x10000; } else if ( !(cmd.com.ie_cmd_status & IE_STAT_OK) ) { result = 0x10000; } if ( result==0 ) result = cmd.ie_tdr_time; ie_ack ( sc, IE_ST_WHENCE ); if (result & IE_TDR_SUCCESS ) return; /* Very messy. I'll tidy it later */ if ( result & 0x10000 ) { printf ( "ie: TDR command failed\n" ); } else if ( result & IE_TDR_XCVR ) { printf ( "ie: tranceiver problem. Is it plugged in?\n" ); } else if ( result & IE_TDR_OPEN ) { if ((result & IE_TDR_TIME)>0) printf ( "ie: TDR detected an open %d clocks away.\n", result & IE_TDR_TIME ); } else if ( result & IE_TDR_SHORT ) { if ((result & IE_TDR_TIME)>0) printf ( "ie: TDR detected a short %d clock away.\n", result & IE_TDR_TIME ); } else { printf ( "ie: TDR returned unknown status %x\n", result ); } } u_long setup_rfa(struct ie_softc *sc, u_long ptr) { int i; { /* Receive frame descriptors */ struct ie_recv_frame_desc rfd; memset( &rfd, 0, sizeof rfd ); for ( i=0; irframes[i] = ptr; rfd.ie_fd_next = ptr + sizeof rfd; host2ie(sc, (char *)&rfd, ptr, sizeof rfd); ptr += sizeof rfd; } rfd.ie_fd_next = sc->rframes[0]; rfd.ie_fd_last |= IE_FD_LAST; host2ie(sc, (char *)&rfd, sc->rframes[NFRAMES-1], sizeof rfd ); ie2host(sc, sc->rframes[0], (char *)&rfd, sizeof rfd ); rfd.ie_fd_buf_desc = (u_short) ptr; host2ie(sc, (char *)&rfd, sc->rframes[0], sizeof rfd ); } { /* Receive frame descriptors */ struct ie_recv_buf_desc rbd; memset(&rbd, 0, sizeof rbd); for ( i=0; irbuffs[i] = ptr; rbd.ie_rbd_length = IE_RXBUF_SIZE; rbd.ie_rbd_buffer = (void *)(ptr + sizeof rbd); rbd.ie_rbd_next = (u_short)(ptr + sizeof rbd + IE_RXBUF_SIZE); host2ie(sc, &rbd, ptr, sizeof rbd); ptr+=sizeof rbd; sc->cbuffs[i] = ptr; ptr+=IE_RXBUF_SIZE; } rbd.ie_rbd_next = sc->rbuffs[0]; rbd.ie_rbd_length |= IE_RBD_LAST; host2ie(sc, &rbd, sc->rbuffs[NRXBUF-1], sizeof rbd); } sc->rfhead = 0; sc->rftail = NFRAMES-1; sc->rbhead = 0; sc->rbtail = NRXBUF-1; { struct ie_sys_ctl_block scb; bzero ( &scb, sizeof scb ); scb.ie_recv_list = (u_short)sc->rframes[0]; host2ie(sc, (char *)&scb, (IE_IBASE + IE_SCB_OFF), sizeof scb ); } return ptr; } static void start_receiver(struct ie_softc *sc) { struct ie_sys_ctl_block scb; ie2host ( sc, IE_IBASE + IE_SCB_OFF, &scb, sizeof scb ); scb.ie_recv_list = (u_short)sc->rframes[0]; command_and_wait(sc, IE_RU_START, &scb, 0, 0, 0, 0); ie_ack(sc, IE_ST_WHENCE ); } /* * Take our configuration and update all the other data structures that * require information from the driver. * * CALL AT SPLIMP OR HIGHER */ int ieinit(struct ie_softc *sc) { struct ifnet *ifp; struct ie_sys_ctl_block scb; struct ie_config_cmd cmd; struct ie_iasetup_cmd iasetup_cmd; u_long ptr = IE_IBASE + IE_SCB_OFF + sizeof scb; int n; ifp = &sc->sc_ethercom.ec_if; bzero ( &scb, sizeof(scb) ); /* Send the configure command */ cmd.com.ie_cmd_status = 0; cmd.com.ie_cmd_cmd = IE_CMD_CONFIG | IE_CMD_LAST; cmd.com.ie_cmd_link = 0xffff; cmd.ie_config_count = 0x0c; cmd.ie_fifo = 8; cmd.ie_save_bad = 0x40; cmd.ie_addr_len = 0x2e; cmd.ie_priority = 0; cmd.ie_ifs = 0x60; cmd.ie_slot_low = 0; cmd.ie_slot_high = 0xf2; cmd.ie_promisc = 0; /* Hey nuts, look at this! */ cmd.ie_crs_cdt = 0; cmd.ie_min_len = 64; cmd.ie_junk = 0xff; scb.ie_command_list = (u_short)ptr; if ( command_and_wait(sc, IE_CU_START, &scb, &cmd, ptr, sizeof cmd, IE_STAT_COMPL) ) { printf ( "%s: command failed: timeout\n", device_xname(sc->sc_dev)); return 0; } if ( !(cmd.com.ie_cmd_status & IE_STAT_OK) ) { printf ( "%s: command failed: !IE_STAT_OK\n", device_xname(sc->sc_dev)); return 0; } /* Individual address setup command */ iasetup_cmd.com.ie_cmd_status = 0; iasetup_cmd.com.ie_cmd_cmd = IE_CMD_IASETUP | IE_CMD_LAST; iasetup_cmd.com.ie_cmd_link = 0xffff; bcopy ( CLLADDR(ifp->if_sadl), (void *) &iasetup_cmd.ie_address, sizeof (iasetup_cmd.ie_address) ); if ( command_and_wait(sc, IE_CU_START, &scb, &iasetup_cmd, ptr, sizeof cmd, IE_STAT_COMPL) ) { printf ( "%s: iasetup failed : timeout\n", device_xname(sc->sc_dev)); return 0; } if ( !(cmd.com.ie_cmd_status & IE_STAT_OK) ) { printf ( "%s: iasetup failed : !IE_STAT_OK\n", device_xname(sc->sc_dev)); return 0; } ie_ack ( sc, IE_ST_WHENCE ); /* Run the time-domain refloctometer */ run_tdr ( sc ); ie_ack ( sc, IE_ST_WHENCE ); /* meminit */ ptr = setup_rfa(sc, ptr); ifp->if_flags |= IFF_RUNNING; /* Setup transmit buffers */ for ( n=0; nxmit_cmds[n] = ptr; iezero(sc, ptr, sizeof(struct ie_xmit_cmd) ); ptr += sizeof(struct ie_xmit_cmd); sc->xmit_buffs[n] = ptr; iezero(sc, ptr, sizeof(struct ie_xmit_buf)); ptr += sizeof(struct ie_xmit_buf); } for ( n=0; nxmit_cbuffs[n] = ptr; ptr += IE_TXBUF_SIZE; } sc->xmit_free = NTXBUF; sc->xchead = sc->xctail = 0; { struct ie_xmit_cmd xmcmd; bzero ( &xmcmd, sizeof xmcmd ); xmcmd.ie_xmit_status = IE_STAT_COMPL; host2ie(sc, &xmcmd, sc->xmit_cmds[0], sizeof xmcmd); } start_receiver (sc); return 0; } int iestop(struct ie_softc *sc) { struct ie_sys_ctl_block scb; int s = splnet(); ie2host ( sc, IE_IBASE + IE_SCB_OFF, &scb, sizeof scb ); if ( command_and_wait(sc, IE_RU_DISABLE, &scb, 0, 0, 0, 0) ) printf ( "ie0: abort commands timed out\n" ); (void)splx(s); return(0); } /* * Send a command to the card and await its completion. * Timeout if it's taking too long */ /*CAW*/ static int command_and_wait(struct ie_softc *sc, u_short cmd, struct ie_sys_ctl_block *pscb, void *pcmd, int ocmd, int scmd, int mask) { int i=0; /* Copy the command to the card */ if ( pcmd ) host2ie(sc, pcmd, ocmd, scmd); /* transfer the command to the card */ /* Copy the scb to the card */ if ( pscb ) { pscb->ie_command = cmd; host2ie(sc, pscb, IE_IBASE + IE_SCB_OFF, sizeof *pscb); } else { setpage ( sc, IE_IBASE + IE_SCB_OFF ); PWriteShort ( sc->sc_ram + IE_COFF2POFF(IE_IBASE+IE_SCB_OFF) + (xoffsetof(struct ie_sys_ctl_block, ie_command)), cmd ); } /* Prod the card to act on the newly loaded command */ ieattn(sc); /* Wait for the command to complete */ if ( IE_ACTION_COMMAND(cmd) && pcmd ) { setpage(sc,ocmd); for ( i=4000; --i>=0; ) { if ( ReadShort(sc->sc_ram + IE_COFF2POFF(ocmd) + (xoffsetof(struct ie_config_cmd, ie_config_status))) & mask) break; delay(100); } } else { for ( i=4000; --i>=0; ) { if ( !ReadShort(sc->sc_ram + IE_COFF2POFF(IE_IBASE+IE_SCB_OFF) + (xoffsetof(struct ie_sys_ctl_block, ie_command))) ) break; delay(100); } } /* Update the host structures to reflect the state on the card */ if ( pscb ) ie2host(sc, IE_IBASE + IE_SCB_OFF, pscb, sizeof *pscb ); if ( pcmd ) ie2host(sc, ocmd, pcmd, scmd); return i < 0; } #define READ_MEMBER(sc,type,member,ptr,dest) \ setpage(sc, ptr); \ dest = ReadShort(sc->sc_ram + IE_COFF2POFF(ptr) + \ (xoffsetof(type, member)) ); #define WRITE_MEMBER(sc,type,member,ptr,dest) \ setpage(sc, ptr); \ PWriteShort(sc->sc_ram + IE_COFF2POFF(ptr) + \ (xoffsetof(type, member)), dest ); static inline int ie_buflen(struct ie_softc *sc, int head) { int actual; READ_MEMBER(sc,struct ie_recv_buf_desc, ie_rbd_actual, sc->rbuffs[head], actual ); return(actual & (IE_RXBUF_SIZE | (IE_RXBUF_SIZE-1))) ; } static inline int ie_packet_len(struct ie_softc *sc) { int i; int actual; int head = sc->rbhead; int acc=0; do { READ_MEMBER(sc,struct ie_recv_buf_desc, ie_rbd_actual, sc->rbuffs[sc->rbhead], actual ); if (!(actual&IE_RBD_USED)) { return (-1); } READ_MEMBER(sc,struct ie_recv_buf_desc, ie_rbd_actual, sc->rbuffs[head], i ); i = i & IE_RBD_LAST; acc += ie_buflen(sc, head); head = (head+1) % NRXBUF; } while (!i); return acc; } struct mbuf * ieget(struct ie_softc *sc, int *to_bpf ) { struct mbuf *top, **mp, *m; int head; int resid, totlen, thisrboff, thismboff; int len; struct ether_header eh; totlen = ie_packet_len(sc); if ( totlen > ETHER_MAX_LEN ) { printf ( "ie: Gosh that packet was s-o-o-o big.\n" ); return 0; } if ( totlen<=0 ) return 0; head = sc->rbhead; /* Read the ethernet header */ ie2host ( sc, sc->cbuffs[head], (void *)&eh, sizeof eh ); /* Check if the packet is for us */ resid = totlen; MGETHDR ( m, M_DONTWAIT, MT_DATA ); if ( m==0 ) return 0; m_set_rcvif(m, &sc->sc_ethercom.ec_if); m->m_pkthdr.len = totlen; len = MHLEN; top = 0; mp = ⊤ /* * This loop goes through and allocates mbufs for all the data we will * be copying in. It does not actually do the copying yet. */ while (totlen > 0) { if (top) { MGET(m, M_DONTWAIT, MT_DATA); if (m == 0) { m_freem(top); return 0; } len = MLEN; } if (totlen >= MINCLSIZE) { MCLGET(m, M_DONTWAIT); if (m->m_flags & M_EXT) len = MCLBYTES; } if (mp == &top) { void *newdata = (void *) ALIGN(m->m_data + sizeof(struct ether_header)) - sizeof(struct ether_header); len -= newdata - m->m_data; m->m_data = newdata; } m->m_len = len = min(totlen, len); totlen -= len; *mp = m; mp = &m->m_next; } m = top; thismboff = 0; /* * Copy the Ethernet header into the mbuf chain. */ memcpy(mtod(m, void *), &eh, sizeof(struct ether_header)); thismboff = sizeof(struct ether_header); thisrboff = sizeof(struct ether_header); resid -= sizeof(struct ether_header); /* * Now we take the mbuf chain (hopefully only one mbuf most of the * time) and stuff the data into it. There are no possible failures at * or after this point. */ while (resid > 0) { int thisrblen = ie_buflen(sc, head) - thisrboff, thismblen = m->m_len - thismboff; len = min(thisrblen, thismblen); /* bcopy((void *)(sc->cbuffs[head] + thisrboff), mtod(m, void *) + thismboff, (u_int)len); */ if ( len&1 ) { ie2host(sc, sc->cbuffs[head]+thisrboff, mtod(m, void *) + thismboff, (u_int)len+1); } else { ie2host(sc, sc->cbuffs[head]+thisrboff, mtod(m, void *) + thismboff, (u_int)len); } resid -= len; if (len == thismblen) { m = m->m_next; thismboff = 0; } else thismboff += len; if (len == thisrblen) { head = (head + 1) % NRXBUF; thisrboff = 0; } else thisrboff += len; } return top; } void ie_drop_packet_buffer(struct ie_softc *sc) { int i, actual, last; do { READ_MEMBER(sc,struct ie_recv_buf_desc, ie_rbd_actual, sc->rbuffs[sc->rbhead], actual ); if (!(actual&IE_RBD_USED)) { iereset(sc); return; } i = actual & IE_RBD_LAST; READ_MEMBER(sc,struct ie_recv_buf_desc,ie_rbd_length, sc->rbuffs[sc->rbhead], last ); last |= IE_RBD_LAST; WRITE_MEMBER(sc,struct ie_recv_buf_desc,ie_rbd_length, sc->rbuffs[sc->rbhead], last ); WRITE_MEMBER(sc,struct ie_recv_buf_desc,ie_rbd_actual, sc->rbuffs[sc->rbhead], 0 ); sc->rbhead = ( sc->rbhead + 1 ) % NRXBUF; READ_MEMBER(sc,struct ie_recv_buf_desc,ie_rbd_length, sc->rbuffs[sc->rbtail], last ); last &= ~IE_RBD_LAST; WRITE_MEMBER(sc,struct ie_recv_buf_desc,ie_rbd_length, sc->rbuffs[sc->rbtail], last ); sc->rbtail = ( sc->rbtail + 1 ) % NRXBUF; } while (!i); } void ie_read_frame(struct ie_softc *sc, int num) { int status; struct ie_recv_frame_desc rfd; struct mbuf *m=0; struct ifnet *ifp; int last; ifp = &sc->sc_ethercom.ec_if; ie2host(sc, sc->rframes[num], &rfd, sizeof rfd ); status = rfd.ie_fd_status; /* Advance the RFD list, since we're done with this descriptor */ WRITE_MEMBER(sc,struct ie_recv_frame_desc,ie_fd_status, sc->rframes[num], 0 ); READ_MEMBER(sc,struct ie_recv_frame_desc,ie_fd_last, sc->rframes[num], last ); last |= IE_FD_LAST; WRITE_MEMBER(sc,struct ie_recv_frame_desc,ie_fd_last, sc->rframes[num], last ); READ_MEMBER(sc,struct ie_recv_frame_desc,ie_fd_last, sc->rframes[sc->rftail], last ); last &= ~IE_FD_LAST; WRITE_MEMBER(sc,struct ie_recv_frame_desc,ie_fd_last, sc->rframes[sc->rftail], last ); sc->rftail = ( sc->rftail + 1 ) % NFRAMES; sc->rfhead = ( sc->rfhead + 1 ) % NFRAMES; if ( status & IE_FD_OK ) { m = ieget(sc, 0); ie_drop_packet_buffer(sc); } if ( m==0 ) { if_statinc(ifp, if_ierrors); return; } if_percpuq_enqueue(ifp->if_percpuq, m); } void ierint(struct ie_softc *sc) { int i; int times_thru = 1024; struct ie_sys_ctl_block scb; int status; int safety_catch = 0; i = sc->rfhead; for (;;) { if ( (safety_catch++)>100 ) { printf ( "ie: ierint safety catch tripped\n" ); iereset(sc); return; } READ_MEMBER(sc,struct ie_recv_frame_desc,ie_fd_status, sc->rframes[i],status); if ((status&IE_FD_COMPLETE)&&(status&IE_FD_OK)) { if ( !--times_thru ) { printf ( "IERINT: Uh oh. Nuts, look at this bit!!!\n" ); ie2host ( sc, IE_IBASE + IE_SCB_OFF, &scb, sizeof scb ); sc->sc_ethercom.ec_if.if_ierrors += scb.ie_err_crc + scb.ie_err_align + scb.ie_err_resource + scb.ie_err_overrun; scb.ie_err_crc = scb.ie_err_align = 0; scb.ie_err_resource = scb.ie_err_overrun = 0; host2ie(sc, &scb, IE_SCP_ADDR, sizeof (scb) ); } ie_read_frame(sc, i); } else { ie2host ( sc, IE_IBASE + IE_SCB_OFF, &scb, sizeof scb ); if ( ((status&IE_FD_RNR)!=0) && ((scb.ie_status&IE_RU_READY)==0) ) { WRITE_MEMBER(sc,struct ie_recv_frame_desc, ie_fd_buf_desc, sc->rframes[0], sc->rbuffs[0] ); scb.ie_recv_list = sc->rframes[0]; host2ie(sc, (char *)&scb, IE_IBASE + IE_SCB_OFF, sizeof (scb) ); command_and_wait(sc, IE_RU_START, &scb, 0, 0, 0, 0); } break; } i = (i + 1) % NFRAMES; } } static int in_intr = 0; int ieintr(void *arg) { struct ie_softc *sc = arg; u_short status; int safety_catch = 0; static int safety_net = 0; if (in_intr == 1) panic ( "ie: INTERRUPT REENTERED\n" ); /* Clear the interrrupt */ ie_cli (sc); setpage(sc, IE_IBASE + IE_SCB_OFF ); status = ReadShort ( sc->sc_ram + IE_COFF2POFF(IE_IBASE+IE_SCB_OFF) + (xoffsetof(struct ie_sys_ctl_block, ie_status)) ); status = status & IE_ST_WHENCE; if (status == 0) { in_intr = 0; return(0); } loop: ie_ack(sc, status); if (status & (IE_ST_FR | IE_ST_RNR)) ierint(sc); if (status & IE_ST_CX) ietint(sc); if (status & IE_ST_RNR) { printf ( "ie: receiver not ready\n" ); sc->sc_ethercom.ec_if.if_ierrors++; iereset(sc); } setpage(sc, IE_IBASE + IE_SCB_OFF ); status = ReadShort ( sc->sc_ram + IE_COFF2POFF(IE_IBASE+IE_SCB_OFF) + (xoffsetof(struct ie_sys_ctl_block, ie_status)) ); status = status & IE_ST_WHENCE; ie_cli(sc); if (status == 0) { in_intr = 0; return(0); } /* This is prehaps a little over cautious */ if ( safety_catch++ > 10 ) { printf ( "ie: Interrupt couldn't be cleared\n" ); delay ( 1000 ); ie_cli(sc); if ( safety_net++ > 50 ) { /* printf ( "ie: safety net catches driver, shutting down\n" ); disable_irq ( IRQ_PODULE );*/ } in_intr = 0; return(0); } goto loop; } void iexmit(struct ie_softc *sc) { /* int actual;*/ struct ie_sys_ctl_block scb; struct ie_xmit_cmd xc; struct ie_xmit_buf xb; ie2host(sc, sc->xmit_buffs[sc->xctail], (char *)&xb, sizeof xb ); xb.ie_xmit_flags |= IE_XMIT_LAST; xb.ie_xmit_next = 0xffff; xb.ie_xmit_buf = (void *)sc->xmit_cbuffs[sc->xctail]; host2ie(sc, &xb, sc->xmit_buffs[sc->xctail], sizeof xb ); bzero ( &xc, sizeof xc ); xc.com.ie_cmd_link = 0xffff; xc.com.ie_cmd_cmd = IE_CMD_XMIT | IE_CMD_INTR | IE_CMD_LAST; xc.ie_xmit_status = 0x0000; xc.ie_xmit_desc = sc->xmit_buffs[sc->xctail]; host2ie(sc, (char *)&xc, sc->xmit_cmds[sc->xctail], sizeof xc ); ie2host ( sc, IE_IBASE + IE_SCB_OFF, &scb, sizeof scb ); scb.ie_command_list = sc->xmit_cmds[sc->xctail]; host2ie(sc, (char *)&scb, (IE_IBASE + IE_SCB_OFF), sizeof scb ); command_and_wait(sc, IE_CU_START, &scb, &xc, sc->xmit_cmds[sc->xctail] , sizeof xc, IE_STAT_COMPL); sc->sc_ethercom.ec_if.if_timer = 5; } /* * Start sending all the queued buffers. */ void iestart(struct ifnet *ifp) { struct ie_softc *sc = ifp->if_softc; struct mbuf *m0, *m; u_char *buffer; u_short len; char txbuf[IE_TXBUF_SIZE]; int safety_catch = 0; while (sc->xmit_free != 0) { if ( (safety_catch++)>100 ) { printf ( "ie: iestart safety catch tripped\n" ); iereset(sc); return; } IF_DEQUEUE(&ifp->if_snd, m); if (!m) break; /* TODO: Write directly to the card */ len = 0; /* buffer = sc->xmit_cbuffs[sc->xchead]; */ buffer = txbuf; for (m0 = m; m && (len + m->m_len) < IE_TXBUF_SIZE; m = m->m_next) { memcpy(buffer, mtod(m, void *), m->m_len); buffer += m->m_len; len += m->m_len; } bpf_mtap(ifp, m0, BPF_D_OUT); m_freem(m0); if (len < ETHER_MIN_LEN - ETHER_CRC_LEN) { memset(buffer, 0, ETHER_MIN_LEN - ETHER_CRC_LEN - len); len = ETHER_MIN_LEN - ETHER_CRC_LEN; buffer += ETHER_MIN_LEN - ETHER_CRC_LEN; } /* When we write directly to the card we dont need this */ if (len&1) host2ie(sc, txbuf, sc->xmit_cbuffs[sc->xchead], len+1 ); else host2ie(sc, txbuf, sc->xmit_cbuffs[sc->xchead], len ); /* sc->xmit_buffs[sc->xchead]->ie_xmit_flags = len; */ WRITE_MEMBER(sc,struct ie_xmit_buf, ie_xmit_flags, sc->xmit_buffs[sc->xchead], len) /* Start the first packet transmitting. */ if (sc->xmit_free == NTXBUF) iexmit(sc); sc->xchead = (sc->xchead + 1) % NTXBUF; sc->xmit_free--; } } void ietint(struct ie_softc *sc) { struct ifnet *ifp = &sc->sc_ethercom.ec_if; int status; ifp->if_timer=0; READ_MEMBER(sc,struct ie_xmit_cmd, ie_xmit_status, sc->xmit_cmds[sc->xctail], status ); if (!(status&IE_STAT_COMPL) || (status & IE_STAT_BUSY) ) printf ( "ietint: command still busy!\n" ); if ( status & IE_STAT_OK ) { if_statinc(ifp, if_opackets); if_statadd(ifp, if_collisions, status & IE_XS_MAXCOLL); } else { if_statinc(ifp, if_oerrors); if ( status & IE_STAT_ABORT ) printf ( "ie: send aborted\n" ); if ( status & IE_XS_LATECOLL ) printf ( "ie: late collision\n" ); if ( status & IE_XS_NOCARRIER ) printf ( "ie: no carrier\n" ); if ( status & IE_XS_LOSTCTS ) printf ( "ie: lost CTS\n" ); if ( status & IE_XS_UNDERRUN ) printf ( "ie: DMA underrun\n" ); if ( status & IE_XS_EXCMAX ) printf ( "ie: too many collisions\n" ); if_statadd(ifp, if_collisions, 16); } /* Done with the buffer */ sc->xmit_free++; sc->xctail = (sc->xctail + 1 ) % NTXBUF; /* Start the next packet transmitting, if any */ if ( sc->xmit_free