if_pcn.c revision 188177
1139825Simp/*- 266131Swpaul * Copyright (c) 2000 Berkeley Software Design, Inc. 366131Swpaul * Copyright (c) 1997, 1998, 1999, 2000 466131Swpaul * Bill Paul <wpaul@osd.bsdi.com>. All rights reserved. 566131Swpaul * 666131Swpaul * Redistribution and use in source and binary forms, with or without 766131Swpaul * modification, are permitted provided that the following conditions 866131Swpaul * are met: 966131Swpaul * 1. Redistributions of source code must retain the above copyright 1066131Swpaul * notice, this list of conditions and the following disclaimer. 1166131Swpaul * 2. Redistributions in binary form must reproduce the above copyright 1266131Swpaul * notice, this list of conditions and the following disclaimer in the 1366131Swpaul * documentation and/or other materials provided with the distribution. 1466131Swpaul * 3. All advertising materials mentioning features or use of this software 1566131Swpaul * must display the following acknowledgement: 1666131Swpaul * This product includes software developed by Bill Paul. 1766131Swpaul * 4. Neither the name of the author nor the names of any co-contributors 1866131Swpaul * may be used to endorse or promote products derived from this software 1966131Swpaul * without specific prior written permission. 2066131Swpaul * 2166131Swpaul * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 2266131Swpaul * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2366131Swpaul * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2466131Swpaul * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 2566131Swpaul * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 2666131Swpaul * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 2766131Swpaul * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 2866131Swpaul * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 2966131Swpaul * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 3066131Swpaul * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 3166131Swpaul * THE POSSIBILITY OF SUCH DAMAGE. 3266131Swpaul */ 3366131Swpaul 34122678Sobrien#include <sys/cdefs.h> 35122678Sobrien__FBSDID("$FreeBSD: head/sys/dev/pcn/if_pcn.c 188177 2009-02-05 19:36:14Z imp $"); 36122678Sobrien 3766131Swpaul/* 38134842Sbrueffer * AMD Am79c972 fast ethernet PCI NIC driver. Datasheets are available 3966131Swpaul * from http://www.amd.com. 4066131Swpaul * 4166131Swpaul * The AMD PCnet/PCI controllers are more advanced and functional 4266131Swpaul * versions of the venerable 7990 LANCE. The PCnet/PCI chips retain 4366131Swpaul * backwards compatibility with the LANCE and thus can be made 4466131Swpaul * to work with older LANCE drivers. This is in fact how the 4566131Swpaul * PCnet/PCI chips were supported in FreeBSD originally. The trouble 4666131Swpaul * is that the PCnet/PCI devices offer several performance enhancements 4766131Swpaul * which can't be exploited in LANCE compatibility mode. Chief among 4866131Swpaul * these enhancements is the ability to perform PCI DMA operations 4966131Swpaul * using 32-bit addressing (which eliminates the need for ISA 5066131Swpaul * bounce-buffering), and special receive buffer alignment (which 5166131Swpaul * allows the receive handler to pass packets to the upper protocol 5266131Swpaul * layers without copying on both the x86 and alpha platforms). 5366131Swpaul */ 5466131Swpaul 5566131Swpaul#include <sys/param.h> 5666131Swpaul#include <sys/systm.h> 5766131Swpaul#include <sys/sockio.h> 5866131Swpaul#include <sys/mbuf.h> 5966131Swpaul#include <sys/malloc.h> 6066131Swpaul#include <sys/kernel.h> 61129878Sphk#include <sys/module.h> 6266131Swpaul#include <sys/socket.h> 6366131Swpaul 6466131Swpaul#include <net/if.h> 6566131Swpaul#include <net/if_arp.h> 6666131Swpaul#include <net/ethernet.h> 6766131Swpaul#include <net/if_dl.h> 6866131Swpaul#include <net/if_media.h> 69147256Sbrooks#include <net/if_types.h> 7066131Swpaul 7166131Swpaul#include <net/bpf.h> 7266131Swpaul 7366131Swpaul#include <vm/vm.h> /* for vtophys */ 7466131Swpaul#include <vm/pmap.h> /* for vtophys */ 7566131Swpaul#include <machine/bus.h> 7666131Swpaul#include <machine/resource.h> 7766131Swpaul#include <sys/bus.h> 7866131Swpaul#include <sys/rman.h> 7966131Swpaul 8066131Swpaul#include <dev/mii/mii.h> 8166131Swpaul#include <dev/mii/miivar.h> 8266131Swpaul 83119288Simp#include <dev/pci/pcireg.h> 84119288Simp#include <dev/pci/pcivar.h> 8566131Swpaul 8666131Swpaul#define PCN_USEIOSPACE 8766131Swpaul 88181740Simp#include <dev/pcn/if_pcnreg.h> 8966131Swpaul 90113506SmdoddMODULE_DEPEND(pcn, pci, 1, 1, 1); 91113506SmdoddMODULE_DEPEND(pcn, ether, 1, 1, 1); 9266131SwpaulMODULE_DEPEND(pcn, miibus, 1, 1, 1); 9366131Swpaul 94149584Simp/* "device miibus" required. See GENERIC if you get errors here. */ 9566131Swpaul#include "miibus_if.h" 9666131Swpaul 9766131Swpaul/* 9866131Swpaul * Various supported device vendors/types and their names. 9966131Swpaul */ 100164072Smariusstatic const struct pcn_type pcn_devs[] = { 10166131Swpaul { PCN_VENDORID, PCN_DEVICEID_PCNET, "AMD PCnet/PCI 10/100BaseTX" }, 10266131Swpaul { PCN_VENDORID, PCN_DEVICEID_HOME, "AMD PCnet/Home HomePNA" }, 10366131Swpaul { 0, 0, NULL } 10466131Swpaul}; 10566131Swpaul 106164072Smariusstatic const struct pcn_chipid { 107138354Smdodd u_int32_t id; 108164072Smarius const char *name; 109138354Smdodd} pcn_chipid[] = { 110138354Smdodd { Am79C971, "Am79C971" }, 111138354Smdodd { Am79C972, "Am79C972" }, 112138354Smdodd { Am79C973, "Am79C973" }, 113138354Smdodd { Am79C978, "Am79C978" }, 114138354Smdodd { Am79C975, "Am79C975" }, 115138354Smdodd { Am79C976, "Am79C976" }, 116138354Smdodd { 0, NULL }, 117138354Smdodd}; 118138354Smdodd 119164072Smariusstatic const char *pcn_chipid_name(u_int32_t); 120142407Simpstatic u_int32_t pcn_chip_id(device_t); 121164072Smariusstatic const struct pcn_type *pcn_match(u_int16_t, u_int16_t); 122138354Smdodd 123142407Simpstatic u_int32_t pcn_csr_read(struct pcn_softc *, int); 124142407Simpstatic u_int16_t pcn_csr_read16(struct pcn_softc *, int); 125142407Simpstatic u_int16_t pcn_bcr_read16(struct pcn_softc *, int); 126142407Simpstatic void pcn_csr_write(struct pcn_softc *, int, int); 127142407Simpstatic u_int32_t pcn_bcr_read(struct pcn_softc *, int); 128142407Simpstatic void pcn_bcr_write(struct pcn_softc *, int, int); 12966131Swpaul 130142407Simpstatic int pcn_probe(device_t); 131142407Simpstatic int pcn_attach(device_t); 132142407Simpstatic int pcn_detach(device_t); 13366131Swpaul 134142407Simpstatic int pcn_newbuf(struct pcn_softc *, int, struct mbuf *); 135142407Simpstatic int pcn_encap(struct pcn_softc *, struct mbuf *, u_int32_t *); 136142407Simpstatic void pcn_rxeof(struct pcn_softc *); 137142407Simpstatic void pcn_txeof(struct pcn_softc *); 138142407Simpstatic void pcn_intr(void *); 139142407Simpstatic void pcn_tick(void *); 140142407Simpstatic void pcn_start(struct ifnet *); 141148738Sjhbstatic void pcn_start_locked(struct ifnet *); 142142407Simpstatic int pcn_ioctl(struct ifnet *, u_long, caddr_t); 143142407Simpstatic void pcn_init(void *); 144148738Sjhbstatic void pcn_init_locked(struct pcn_softc *); 145142407Simpstatic void pcn_stop(struct pcn_softc *); 146142407Simpstatic void pcn_watchdog(struct ifnet *); 147188177Simpstatic int pcn_shutdown(device_t); 148142407Simpstatic int pcn_ifmedia_upd(struct ifnet *); 149142407Simpstatic void pcn_ifmedia_sts(struct ifnet *, struct ifmediareq *); 15066131Swpaul 151142407Simpstatic int pcn_miibus_readreg(device_t, int, int); 152142407Simpstatic int pcn_miibus_writereg(device_t, int, int, int); 153142407Simpstatic void pcn_miibus_statchg(device_t); 15466131Swpaul 155142407Simpstatic void pcn_setfilt(struct ifnet *); 156142407Simpstatic void pcn_setmulti(struct pcn_softc *); 157142407Simpstatic void pcn_reset(struct pcn_softc *); 158142407Simpstatic int pcn_list_rx_init(struct pcn_softc *); 159142407Simpstatic int pcn_list_tx_init(struct pcn_softc *); 16066131Swpaul 16166131Swpaul#ifdef PCN_USEIOSPACE 16266131Swpaul#define PCN_RES SYS_RES_IOPORT 16366131Swpaul#define PCN_RID PCN_PCI_LOIO 16466131Swpaul#else 16566131Swpaul#define PCN_RES SYS_RES_MEMORY 16666131Swpaul#define PCN_RID PCN_PCI_LOMEM 16766131Swpaul#endif 16866131Swpaul 16966131Swpaulstatic device_method_t pcn_methods[] = { 17066131Swpaul /* Device interface */ 17166131Swpaul DEVMETHOD(device_probe, pcn_probe), 17266131Swpaul DEVMETHOD(device_attach, pcn_attach), 17366131Swpaul DEVMETHOD(device_detach, pcn_detach), 17466131Swpaul DEVMETHOD(device_shutdown, pcn_shutdown), 17566131Swpaul 17666131Swpaul /* bus interface */ 17766131Swpaul DEVMETHOD(bus_print_child, bus_generic_print_child), 17866131Swpaul DEVMETHOD(bus_driver_added, bus_generic_driver_added), 17966131Swpaul 18066131Swpaul /* MII interface */ 18166131Swpaul DEVMETHOD(miibus_readreg, pcn_miibus_readreg), 18266131Swpaul DEVMETHOD(miibus_writereg, pcn_miibus_writereg), 18366131Swpaul DEVMETHOD(miibus_statchg, pcn_miibus_statchg), 18466131Swpaul 18566131Swpaul { 0, 0 } 18666131Swpaul}; 18766131Swpaul 18866131Swpaulstatic driver_t pcn_driver = { 18966131Swpaul "pcn", 19066131Swpaul pcn_methods, 19166131Swpaul sizeof(struct pcn_softc) 19266131Swpaul}; 19366131Swpaul 19466131Swpaulstatic devclass_t pcn_devclass; 19566131Swpaul 196113506SmdoddDRIVER_MODULE(pcn, pci, pcn_driver, pcn_devclass, 0, 0); 19766131SwpaulDRIVER_MODULE(miibus, pcn, miibus_driver, miibus_devclass, 0, 0); 19866131Swpaul 19966131Swpaul#define PCN_CSR_SETBIT(sc, reg, x) \ 20066131Swpaul pcn_csr_write(sc, reg, pcn_csr_read(sc, reg) | (x)) 20166131Swpaul 20266131Swpaul#define PCN_CSR_CLRBIT(sc, reg, x) \ 20366131Swpaul pcn_csr_write(sc, reg, pcn_csr_read(sc, reg) & ~(x)) 20466131Swpaul 20566131Swpaul#define PCN_BCR_SETBIT(sc, reg, x) \ 20666131Swpaul pcn_bcr_write(sc, reg, pcn_bcr_read(sc, reg) | (x)) 20766131Swpaul 20866131Swpaul#define PCN_BCR_CLRBIT(sc, reg, x) \ 20966131Swpaul pcn_bcr_write(sc, reg, pcn_bcr_read(sc, reg) & ~(x)) 21066131Swpaul 211102335Salfredstatic u_int32_t 212102335Salfredpcn_csr_read(sc, reg) 21366131Swpaul struct pcn_softc *sc; 21466131Swpaul int reg; 21566131Swpaul{ 21666131Swpaul CSR_WRITE_4(sc, PCN_IO32_RAP, reg); 21766131Swpaul return(CSR_READ_4(sc, PCN_IO32_RDP)); 21866131Swpaul} 21966131Swpaul 220102335Salfredstatic u_int16_t 221102335Salfredpcn_csr_read16(sc, reg) 22268837Swpaul struct pcn_softc *sc; 22368837Swpaul int reg; 22468837Swpaul{ 22568837Swpaul CSR_WRITE_2(sc, PCN_IO16_RAP, reg); 22668837Swpaul return(CSR_READ_2(sc, PCN_IO16_RDP)); 22768837Swpaul} 22868837Swpaul 229102335Salfredstatic void 230102335Salfredpcn_csr_write(sc, reg, val) 23166131Swpaul struct pcn_softc *sc; 23266131Swpaul int reg; 233113799Sobrien int val; 23466131Swpaul{ 23566131Swpaul CSR_WRITE_4(sc, PCN_IO32_RAP, reg); 23666131Swpaul CSR_WRITE_4(sc, PCN_IO32_RDP, val); 23766131Swpaul return; 23866131Swpaul} 23966131Swpaul 240102335Salfredstatic u_int32_t 241102335Salfredpcn_bcr_read(sc, reg) 24266131Swpaul struct pcn_softc *sc; 24366131Swpaul int reg; 24466131Swpaul{ 24566131Swpaul CSR_WRITE_4(sc, PCN_IO32_RAP, reg); 24666131Swpaul return(CSR_READ_4(sc, PCN_IO32_BDP)); 24766131Swpaul} 24866131Swpaul 249102335Salfredstatic u_int16_t 250102335Salfredpcn_bcr_read16(sc, reg) 25169067Swpaul struct pcn_softc *sc; 25269067Swpaul int reg; 25369067Swpaul{ 25469067Swpaul CSR_WRITE_2(sc, PCN_IO16_RAP, reg); 25569067Swpaul return(CSR_READ_2(sc, PCN_IO16_BDP)); 25669067Swpaul} 25769067Swpaul 258102335Salfredstatic void 259102335Salfredpcn_bcr_write(sc, reg, val) 26066131Swpaul struct pcn_softc *sc; 26166131Swpaul int reg; 262113799Sobrien int val; 26366131Swpaul{ 26466131Swpaul CSR_WRITE_4(sc, PCN_IO32_RAP, reg); 26566131Swpaul CSR_WRITE_4(sc, PCN_IO32_BDP, val); 26666131Swpaul return; 26766131Swpaul} 26866131Swpaul 269102335Salfredstatic int 270102335Salfredpcn_miibus_readreg(dev, phy, reg) 27166131Swpaul device_t dev; 27266131Swpaul int phy, reg; 27366131Swpaul{ 27466131Swpaul struct pcn_softc *sc; 27566131Swpaul int val; 27666131Swpaul 27766131Swpaul sc = device_get_softc(dev); 27866131Swpaul 279164712Smarius /* 280164712Smarius * At least Am79C971 with DP83840A wedge when isolating the 281164712Smarius * external PHY so we can't allow multiple external PHYs. 282165997Smarius * There are cards that use Am79C971 with both the internal 283165997Smarius * and an external PHY though. 284164712Smarius * For internal PHYs it doesn't really matter whether we can 285164712Smarius * isolate the remaining internal and the external ones in 286164712Smarius * the PHY drivers as the internal PHYs have to be enabled 287164712Smarius * individually in PCN_BCR_PHYSEL, PCN_CSR_MODE, etc. 288165997Smarius * With Am79C97{3,5,8} we don't support switching beetween 289165997Smarius * the internal and external PHYs, yet, so we can't allow 290165997Smarius * multiple PHYs with these either. 291165997Smarius * Am79C97{2,6} actually only support external PHYs (not 292165997Smarius * connectable internal ones respond at the usual addresses, 293165997Smarius * which don't hurt if we let them show up on the bus) and 294165997Smarius * isolating them works. 295164712Smarius */ 296165997Smarius if (((sc->pcn_type == Am79C971 && phy != PCN_PHYAD_10BT) || 297165997Smarius sc->pcn_type == Am79C973 || sc->pcn_type == Am79C975 || 298165997Smarius sc->pcn_type == Am79C978) && sc->pcn_extphyaddr != -1 && 299164712Smarius phy != sc->pcn_extphyaddr) 30066131Swpaul return(0); 30166131Swpaul 30266131Swpaul pcn_bcr_write(sc, PCN_BCR_MIIADDR, reg | (phy << 5)); 30366131Swpaul val = pcn_bcr_read(sc, PCN_BCR_MIIDATA) & 0xFFFF; 30466131Swpaul if (val == 0xFFFF) 30566131Swpaul return(0); 30666208Swpaul 307165997Smarius if (((sc->pcn_type == Am79C971 && phy != PCN_PHYAD_10BT) || 308165997Smarius sc->pcn_type == Am79C973 || sc->pcn_type == Am79C975 || 309165997Smarius sc->pcn_type == Am79C978) && sc->pcn_extphyaddr == -1) 310164712Smarius sc->pcn_extphyaddr = phy; 31166208Swpaul 31266131Swpaul return(val); 31366131Swpaul} 31466131Swpaul 315102335Salfredstatic int 316102335Salfredpcn_miibus_writereg(dev, phy, reg, data) 31766131Swpaul device_t dev; 31866131Swpaul int phy, reg, data; 31966131Swpaul{ 32066131Swpaul struct pcn_softc *sc; 32166131Swpaul 32266131Swpaul sc = device_get_softc(dev); 32366131Swpaul 32466131Swpaul pcn_bcr_write(sc, PCN_BCR_MIIADDR, reg | (phy << 5)); 32566131Swpaul pcn_bcr_write(sc, PCN_BCR_MIIDATA, data); 32666131Swpaul 32766131Swpaul return(0); 32866131Swpaul} 32966131Swpaul 330102335Salfredstatic void 331102335Salfredpcn_miibus_statchg(dev) 33266131Swpaul device_t dev; 33366131Swpaul{ 33466131Swpaul struct pcn_softc *sc; 33566131Swpaul struct mii_data *mii; 33666131Swpaul 33766131Swpaul sc = device_get_softc(dev); 33866131Swpaul mii = device_get_softc(sc->pcn_miibus); 33966131Swpaul 34066131Swpaul if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) { 34166131Swpaul PCN_BCR_SETBIT(sc, PCN_BCR_DUPLEX, PCN_DUPLEX_FDEN); 34266131Swpaul } else { 34366131Swpaul PCN_BCR_CLRBIT(sc, PCN_BCR_DUPLEX, PCN_DUPLEX_FDEN); 34466131Swpaul } 34566131Swpaul 34666131Swpaul return; 34766131Swpaul} 34866131Swpaul 349102335Salfredstatic void 350102335Salfredpcn_setmulti(sc) 35166131Swpaul struct pcn_softc *sc; 35266131Swpaul{ 35366131Swpaul struct ifnet *ifp; 35466131Swpaul struct ifmultiaddr *ifma; 35566131Swpaul u_int32_t h, i; 35666131Swpaul u_int16_t hashes[4] = { 0, 0, 0, 0 }; 35766131Swpaul 358147256Sbrooks ifp = sc->pcn_ifp; 35966131Swpaul 36066131Swpaul PCN_CSR_SETBIT(sc, PCN_CSR_EXTCTL1, PCN_EXTCTL1_SPND); 36166131Swpaul 36266131Swpaul if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 36366131Swpaul for (i = 0; i < 4; i++) 36466131Swpaul pcn_csr_write(sc, PCN_CSR_MAR0 + i, 0xFFFF); 36566131Swpaul PCN_CSR_CLRBIT(sc, PCN_CSR_EXTCTL1, PCN_EXTCTL1_SPND); 36666131Swpaul return; 36766131Swpaul } 36866131Swpaul 36966131Swpaul /* first, zot all the existing hash bits */ 37066131Swpaul for (i = 0; i < 4; i++) 37166131Swpaul pcn_csr_write(sc, PCN_CSR_MAR0 + i, 0); 37266131Swpaul 37366131Swpaul /* now program new ones */ 374148654Srwatson IF_ADDR_LOCK(ifp); 37572084Sphk TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 37666131Swpaul if (ifma->ifma_addr->sa_family != AF_LINK) 37766131Swpaul continue; 378130270Snaddy h = ether_crc32_le(LLADDR((struct sockaddr_dl *) 379130270Snaddy ifma->ifma_addr), ETHER_ADDR_LEN) >> 26; 38066131Swpaul hashes[h >> 4] |= 1 << (h & 0xF); 38166131Swpaul } 382148654Srwatson IF_ADDR_UNLOCK(ifp); 38366131Swpaul 38466131Swpaul for (i = 0; i < 4; i++) 38566131Swpaul pcn_csr_write(sc, PCN_CSR_MAR0 + i, hashes[i]); 38666131Swpaul 38766131Swpaul PCN_CSR_CLRBIT(sc, PCN_CSR_EXTCTL1, PCN_EXTCTL1_SPND); 38866131Swpaul 38966131Swpaul return; 39066131Swpaul} 39166131Swpaul 392102335Salfredstatic void 393102335Salfredpcn_reset(sc) 39466131Swpaul struct pcn_softc *sc; 39566131Swpaul{ 39666131Swpaul /* 39766131Swpaul * Issue a reset by reading from the RESET register. 39866131Swpaul * Note that we don't know if the chip is operating in 39966131Swpaul * 16-bit or 32-bit mode at this point, so we attempt 40066131Swpaul * to reset the chip both ways. If one fails, the other 40166131Swpaul * will succeed. 40266131Swpaul */ 40366131Swpaul CSR_READ_2(sc, PCN_IO16_RESET); 40466131Swpaul CSR_READ_4(sc, PCN_IO32_RESET); 40566131Swpaul 40666131Swpaul /* Wait a little while for the chip to get its brains in order. */ 40766131Swpaul DELAY(1000); 40866131Swpaul 40966131Swpaul /* Select 32-bit (DWIO) mode */ 41066131Swpaul CSR_WRITE_4(sc, PCN_IO32_RDP, 0); 41166131Swpaul 41266131Swpaul /* Select software style 3. */ 41366131Swpaul pcn_bcr_write(sc, PCN_BCR_SSTYLE, PCN_SWSTYLE_PCNETPCI_BURST); 41466131Swpaul 41566131Swpaul return; 41666131Swpaul} 41766131Swpaul 418164072Smariusstatic const char * 419164072Smariuspcn_chipid_name(u_int32_t id) 420138354Smdodd{ 421164072Smarius const struct pcn_chipid *p; 422138354Smdodd 423164072Smarius p = pcn_chipid; 424138354Smdodd while (p->name) { 425138354Smdodd if (id == p->id) 426138354Smdodd return (p->name); 427138354Smdodd p++; 428138354Smdodd } 429138354Smdodd return ("Unknown"); 430138354Smdodd} 431138354Smdodd 432138354Smdoddstatic u_int32_t 433164072Smariuspcn_chip_id(device_t dev) 434138354Smdodd{ 435138354Smdodd struct pcn_softc *sc; 436138354Smdodd u_int32_t chip_id; 437138354Smdodd 438138354Smdodd sc = device_get_softc(dev); 439138354Smdodd /* 440138354Smdodd * Note: we can *NOT* put the chip into 441158614Smarius * 32-bit mode yet. The le(4) driver will only 442138354Smdodd * work in 16-bit mode, and once the chip 443138354Smdodd * goes into 32-bit mode, the only way to 444138354Smdodd * get it out again is with a hardware reset. 445138354Smdodd * So if pcn_probe() is called before the 446158614Smarius * le(4) driver's probe routine, the chip will 447158614Smarius * be locked into 32-bit operation and the 448158614Smarius * le(4) driver will be unable to attach to it. 449138354Smdodd * Note II: if the chip happens to already 450138354Smdodd * be in 32-bit mode, we still need to check 451138354Smdodd * the chip ID, but first we have to detect 452138354Smdodd * 32-bit mode using only 16-bit operations. 453138354Smdodd * The safest way to do this is to read the 454138354Smdodd * PCI subsystem ID from BCR23/24 and compare 455138354Smdodd * that with the value read from PCI config 456138354Smdodd * space. 457138354Smdodd */ 458138354Smdodd chip_id = pcn_bcr_read16(sc, PCN_BCR_PCISUBSYSID); 459138354Smdodd chip_id <<= 16; 460138354Smdodd chip_id |= pcn_bcr_read16(sc, PCN_BCR_PCISUBVENID); 461138354Smdodd /* 462138354Smdodd * Note III: the test for 0x10001000 is a hack to 463138354Smdodd * pacify VMware, who's pseudo-PCnet interface is 464138354Smdodd * broken. Reading the subsystem register from PCI 465138354Smdodd * config space yields 0x00000000 while reading the 466138354Smdodd * same value from I/O space yields 0x10001000. It's 467138354Smdodd * not supposed to be that way. 468138354Smdodd */ 469138354Smdodd if (chip_id == pci_read_config(dev, 470138354Smdodd PCIR_SUBVEND_0, 4) || chip_id == 0x10001000) { 471138354Smdodd /* We're in 16-bit mode. */ 472138354Smdodd chip_id = pcn_csr_read16(sc, PCN_CSR_CHIPID1); 473138354Smdodd chip_id <<= 16; 474138354Smdodd chip_id |= pcn_csr_read16(sc, PCN_CSR_CHIPID0); 475138354Smdodd } else { 476138354Smdodd /* We're in 32-bit mode. */ 477138354Smdodd chip_id = pcn_csr_read(sc, PCN_CSR_CHIPID1); 478138354Smdodd chip_id <<= 16; 479138354Smdodd chip_id |= pcn_csr_read(sc, PCN_CSR_CHIPID0); 480138354Smdodd } 481138354Smdodd 482138354Smdodd return (chip_id); 483138354Smdodd} 484138354Smdodd 485164072Smariusstatic const struct pcn_type * 486164072Smariuspcn_match(u_int16_t vid, u_int16_t did) 487138355Smdodd{ 488164072Smarius const struct pcn_type *t; 489164072Smarius 490138355Smdodd t = pcn_devs; 491164072Smarius while (t->pcn_name != NULL) { 492138355Smdodd if ((vid == t->pcn_vid) && (did == t->pcn_did)) 493138355Smdodd return (t); 494138355Smdodd t++; 495138355Smdodd } 496138355Smdodd return (NULL); 497138355Smdodd} 498138355Smdodd 49966131Swpaul/* 50066131Swpaul * Probe for an AMD chip. Check the PCI vendor and device 50166131Swpaul * IDs against our list and return a device name if we find a match. 50266131Swpaul */ 503102335Salfredstatic int 504102335Salfredpcn_probe(dev) 50566131Swpaul device_t dev; 50666131Swpaul{ 507164072Smarius const struct pcn_type *t; 50866131Swpaul struct pcn_softc *sc; 50966131Swpaul int rid; 51066131Swpaul u_int32_t chip_id; 51166131Swpaul 512138355Smdodd t = pcn_match(pci_get_vendor(dev), pci_get_device(dev)); 513138355Smdodd if (t == NULL) 514138355Smdodd return (ENXIO); 51566131Swpaul sc = device_get_softc(dev); 51666131Swpaul 517138355Smdodd /* 518138355Smdodd * Temporarily map the I/O space so we can read the chip ID register. 519138355Smdodd */ 520138355Smdodd rid = PCN_RID; 521138355Smdodd sc->pcn_res = bus_alloc_resource_any(dev, PCN_RES, &rid, RF_ACTIVE); 522138355Smdodd if (sc->pcn_res == NULL) { 523138355Smdodd device_printf(dev, "couldn't map ports/memory\n"); 524138355Smdodd return(ENXIO); 52566131Swpaul } 526138355Smdodd sc->pcn_btag = rman_get_bustag(sc->pcn_res); 527138355Smdodd sc->pcn_bhandle = rman_get_bushandle(sc->pcn_res); 52866131Swpaul 529138355Smdodd chip_id = pcn_chip_id(dev); 530138355Smdodd 531138355Smdodd bus_release_resource(dev, PCN_RES, PCN_RID, sc->pcn_res); 532138355Smdodd 533138355Smdodd switch((chip_id >> 12) & PART_MASK) { 534138355Smdodd case Am79C971: 535138355Smdodd case Am79C972: 536138355Smdodd case Am79C973: 537138355Smdodd case Am79C975: 538138355Smdodd case Am79C976: 539138355Smdodd case Am79C978: 540138355Smdodd break; 541138355Smdodd default: 542138355Smdodd return(ENXIO); 543138355Smdodd } 544138355Smdodd device_set_desc(dev, t->pcn_name); 545142398Simp return(BUS_PROBE_DEFAULT); 54666131Swpaul} 54766131Swpaul 54866131Swpaul/* 54966131Swpaul * Attach the interface. Allocate softc structures, do ifmedia 55066131Swpaul * setup and ethernet/BPF attach. 55166131Swpaul */ 552102335Salfredstatic int 553102335Salfredpcn_attach(dev) 55466131Swpaul device_t dev; 55566131Swpaul{ 55666131Swpaul u_int32_t eaddr[2]; 55766131Swpaul struct pcn_softc *sc; 558164712Smarius struct mii_data *mii; 559164712Smarius struct mii_softc *miisc; 56066131Swpaul struct ifnet *ifp; 561164072Smarius int error = 0, rid; 56266131Swpaul 56366131Swpaul sc = device_get_softc(dev); 56466131Swpaul 56569583Swpaul /* Initialize our mutex. */ 56693818Sjhb mtx_init(&sc->pcn_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 567148738Sjhb MTX_DEF); 56866131Swpaul /* 56966131Swpaul * Map control/status registers. 57066131Swpaul */ 57172813Swpaul pci_enable_busmaster(dev); 57266131Swpaul 573138354Smdodd /* Retrieve the chip ID */ 574138354Smdodd sc->pcn_type = (pcn_chip_id(dev) >> 12) & PART_MASK; 575138354Smdodd device_printf(dev, "Chip ID %04x (%s)\n", 576138354Smdodd sc->pcn_type, pcn_chipid_name(sc->pcn_type)); 577138354Smdodd 57866131Swpaul rid = PCN_RID; 579127135Snjl sc->pcn_res = bus_alloc_resource_any(dev, PCN_RES, &rid, RF_ACTIVE); 58066131Swpaul 58166131Swpaul if (sc->pcn_res == NULL) { 582164072Smarius device_printf(dev, "couldn't map ports/memory\n"); 58366131Swpaul error = ENXIO; 58466131Swpaul goto fail; 58566131Swpaul } 58666131Swpaul 58766131Swpaul sc->pcn_btag = rman_get_bustag(sc->pcn_res); 58866131Swpaul sc->pcn_bhandle = rman_get_bushandle(sc->pcn_res); 58966131Swpaul 59066131Swpaul /* Allocate interrupt */ 59166131Swpaul rid = 0; 592127135Snjl sc->pcn_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 59366131Swpaul RF_SHAREABLE | RF_ACTIVE); 59466131Swpaul 59566131Swpaul if (sc->pcn_irq == NULL) { 596164072Smarius device_printf(dev, "couldn't map interrupt\n"); 59766131Swpaul error = ENXIO; 59866131Swpaul goto fail; 59966131Swpaul } 60066131Swpaul 60166131Swpaul /* Reset the adapter. */ 60266131Swpaul pcn_reset(sc); 60366131Swpaul 60466131Swpaul /* 60566131Swpaul * Get station address from the EEPROM. 60666131Swpaul */ 60766131Swpaul eaddr[0] = CSR_READ_4(sc, PCN_IO32_APROM00); 60866131Swpaul eaddr[1] = CSR_READ_4(sc, PCN_IO32_APROM01); 60966131Swpaul 610149204Sjhb callout_init_mtx(&sc->pcn_stat_callout, &sc->pcn_mtx, 0); 61166131Swpaul 61266131Swpaul sc->pcn_ldata = contigmalloc(sizeof(struct pcn_list_data), M_DEVBUF, 61366131Swpaul M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0); 61466131Swpaul 61566131Swpaul if (sc->pcn_ldata == NULL) { 616164072Smarius device_printf(dev, "no memory for list buffers!\n"); 61766131Swpaul error = ENXIO; 61866131Swpaul goto fail; 61966131Swpaul } 62066131Swpaul bzero(sc->pcn_ldata, sizeof(struct pcn_list_data)); 62166131Swpaul 622147256Sbrooks ifp = sc->pcn_ifp = if_alloc(IFT_ETHER); 623147256Sbrooks if (ifp == NULL) { 624164072Smarius device_printf(dev, "can not if_alloc()\n"); 625147256Sbrooks error = ENOSPC; 626147256Sbrooks goto fail; 627147256Sbrooks } 62866131Swpaul ifp->if_softc = sc; 629121816Sbrooks if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 630148738Sjhb ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 63166131Swpaul ifp->if_ioctl = pcn_ioctl; 63266131Swpaul ifp->if_start = pcn_start; 63366131Swpaul ifp->if_watchdog = pcn_watchdog; 63466131Swpaul ifp->if_init = pcn_init; 63566131Swpaul ifp->if_snd.ifq_maxlen = PCN_TX_LIST_CNT - 1; 63666131Swpaul 63766131Swpaul /* 63866131Swpaul * Do MII setup. 63966131Swpaul */ 640164712Smarius sc->pcn_extphyaddr = -1; 64166131Swpaul if (mii_phy_probe(dev, &sc->pcn_miibus, 64266131Swpaul pcn_ifmedia_upd, pcn_ifmedia_sts)) { 643164072Smarius device_printf(dev, "MII without any PHY!\n"); 64466131Swpaul error = ENXIO; 64566131Swpaul goto fail; 64666131Swpaul } 647164712Smarius /* 648164712Smarius * Record the media instances of internal PHYs, which map the 649164712Smarius * built-in interfaces to the MII, so we can set the active 650164712Smarius * PHY/port based on the currently selected media. 651164712Smarius */ 652164712Smarius sc->pcn_inst_10bt = -1; 653164712Smarius mii = device_get_softc(sc->pcn_miibus); 654164712Smarius LIST_FOREACH(miisc, &mii->mii_phys, mii_list) { 655164712Smarius switch (miisc->mii_phy) { 656164712Smarius case PCN_PHYAD_10BT: 657164712Smarius sc->pcn_inst_10bt = miisc->mii_inst; 658164712Smarius break; 659164712Smarius /* 660164712Smarius * XXX deal with the Am79C97{3,5} internal 100baseT 661164712Smarius * and the Am79C978 internal HomePNA PHYs. 662164712Smarius */ 663164712Smarius } 664164712Smarius } 66566131Swpaul 66666131Swpaul /* 66766131Swpaul * Call MI attach routine. 66866131Swpaul */ 669106936Ssam ether_ifattach(ifp, (u_int8_t *) eaddr); 67066131Swpaul 671113609Snjl /* Hook interrupt last to avoid having to lock softc */ 672148738Sjhb error = bus_setup_intr(dev, sc->pcn_irq, INTR_TYPE_NET | INTR_MPSAFE, 673166901Spiso NULL, pcn_intr, sc, &sc->pcn_intrhand); 674110472Smdodd 675112872Snjl if (error) { 676164072Smarius device_printf(dev, "couldn't set up irq\n"); 677113609Snjl ether_ifdetach(ifp); 678112872Snjl goto fail; 679112872Snjl } 680110472Smdodd 681112872Snjlfail: 682112872Snjl if (error) 683112872Snjl pcn_detach(dev); 68467087Swpaul 68566131Swpaul return(error); 68666131Swpaul} 68766131Swpaul 688113609Snjl/* 689113609Snjl * Shutdown hardware and free up resources. This can be called any 690113609Snjl * time after the mutex has been initialized. It is called in both 691113609Snjl * the error case in attach and the normal detach case so it needs 692113609Snjl * to be careful about only freeing resources that have actually been 693113609Snjl * allocated. 694113609Snjl */ 695102335Salfredstatic int 696102335Salfredpcn_detach(dev) 69766131Swpaul device_t dev; 69866131Swpaul{ 69966131Swpaul struct pcn_softc *sc; 70066131Swpaul struct ifnet *ifp; 70166131Swpaul 70266131Swpaul sc = device_get_softc(dev); 703147256Sbrooks ifp = sc->pcn_ifp; 70466131Swpaul 705112880Sjhb KASSERT(mtx_initialized(&sc->pcn_mtx), ("pcn mutex not initialized")); 70667087Swpaul 707113609Snjl /* These should only be active if attach succeeded */ 708113812Simp if (device_is_attached(dev)) { 709148738Sjhb PCN_LOCK(sc); 710113609Snjl pcn_reset(sc); 711113609Snjl pcn_stop(sc); 712148738Sjhb PCN_UNLOCK(sc); 713148738Sjhb callout_drain(&sc->pcn_stat_callout); 714112872Snjl ether_ifdetach(ifp); 715150213Sru } 716113609Snjl if (sc->pcn_miibus) 717112872Snjl device_delete_child(dev, sc->pcn_miibus); 718113609Snjl bus_generic_detach(dev); 71966131Swpaul 720112872Snjl if (sc->pcn_intrhand) 721112872Snjl bus_teardown_intr(dev, sc->pcn_irq, sc->pcn_intrhand); 722112872Snjl if (sc->pcn_irq) 723112872Snjl bus_release_resource(dev, SYS_RES_IRQ, 0, sc->pcn_irq); 724112872Snjl if (sc->pcn_res) 725112872Snjl bus_release_resource(dev, PCN_RES, PCN_RID, sc->pcn_res); 72666131Swpaul 727151297Sru if (ifp) 728151297Sru if_free(ifp); 729151297Sru 730112872Snjl if (sc->pcn_ldata) { 731112872Snjl contigfree(sc->pcn_ldata, sizeof(struct pcn_list_data), 732112872Snjl M_DEVBUF); 733112872Snjl } 73466131Swpaul 73567087Swpaul mtx_destroy(&sc->pcn_mtx); 73666131Swpaul 73766131Swpaul return(0); 73866131Swpaul} 73966131Swpaul 74066131Swpaul/* 74166131Swpaul * Initialize the transmit descriptors. 74266131Swpaul */ 743102335Salfredstatic int 744102335Salfredpcn_list_tx_init(sc) 74566131Swpaul struct pcn_softc *sc; 74666131Swpaul{ 74766131Swpaul struct pcn_list_data *ld; 74866131Swpaul struct pcn_ring_data *cd; 74966131Swpaul int i; 75066131Swpaul 75166131Swpaul cd = &sc->pcn_cdata; 75266131Swpaul ld = sc->pcn_ldata; 75366131Swpaul 75466131Swpaul for (i = 0; i < PCN_TX_LIST_CNT; i++) { 75566131Swpaul cd->pcn_tx_chain[i] = NULL; 75666131Swpaul ld->pcn_tx_list[i].pcn_tbaddr = 0; 75766131Swpaul ld->pcn_tx_list[i].pcn_txctl = 0; 75866131Swpaul ld->pcn_tx_list[i].pcn_txstat = 0; 75966131Swpaul } 76066131Swpaul 76166131Swpaul cd->pcn_tx_prod = cd->pcn_tx_cons = cd->pcn_tx_cnt = 0; 76266131Swpaul 76366131Swpaul return(0); 76466131Swpaul} 76566131Swpaul 76666131Swpaul 76766131Swpaul/* 76866131Swpaul * Initialize the RX descriptors and allocate mbufs for them. 76966131Swpaul */ 770102335Salfredstatic int 771102335Salfredpcn_list_rx_init(sc) 77266131Swpaul struct pcn_softc *sc; 77366131Swpaul{ 77466131Swpaul struct pcn_ring_data *cd; 77566131Swpaul int i; 77666131Swpaul 77766131Swpaul cd = &sc->pcn_cdata; 77866131Swpaul 77966131Swpaul for (i = 0; i < PCN_RX_LIST_CNT; i++) { 78066131Swpaul if (pcn_newbuf(sc, i, NULL) == ENOBUFS) 78166131Swpaul return(ENOBUFS); 78266131Swpaul } 78366131Swpaul 78466131Swpaul cd->pcn_rx_prod = 0; 78566131Swpaul 78666131Swpaul return(0); 78766131Swpaul} 78866131Swpaul 78966131Swpaul/* 79066131Swpaul * Initialize an RX descriptor and attach an MBUF cluster. 79166131Swpaul */ 792102335Salfredstatic int 793102335Salfredpcn_newbuf(sc, idx, m) 79466131Swpaul struct pcn_softc *sc; 79566131Swpaul int idx; 79666131Swpaul struct mbuf *m; 79766131Swpaul{ 79866131Swpaul struct mbuf *m_new = NULL; 79966131Swpaul struct pcn_rx_desc *c; 80066131Swpaul 80166131Swpaul c = &sc->pcn_ldata->pcn_rx_list[idx]; 80266131Swpaul 80366131Swpaul if (m == NULL) { 804111119Simp MGETHDR(m_new, M_DONTWAIT, MT_DATA); 80587846Sluigi if (m_new == NULL) 80666131Swpaul return(ENOBUFS); 80766131Swpaul 808111119Simp MCLGET(m_new, M_DONTWAIT); 80966131Swpaul if (!(m_new->m_flags & M_EXT)) { 81066131Swpaul m_freem(m_new); 81166131Swpaul return(ENOBUFS); 81266131Swpaul } 81366131Swpaul m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 81466131Swpaul } else { 81566131Swpaul m_new = m; 81666131Swpaul m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 81766131Swpaul m_new->m_data = m_new->m_ext.ext_buf; 81866131Swpaul } 81966131Swpaul 82066131Swpaul m_adj(m_new, ETHER_ALIGN); 82166131Swpaul 82266131Swpaul sc->pcn_cdata.pcn_rx_chain[idx] = m_new; 82366131Swpaul c->pcn_rbaddr = vtophys(mtod(m_new, caddr_t)); 82466131Swpaul c->pcn_bufsz = (~(PCN_RXLEN) + 1) & PCN_RXLEN_BUFSZ; 82566131Swpaul c->pcn_bufsz |= PCN_RXLEN_MBO; 82666131Swpaul c->pcn_rxstat = PCN_RXSTAT_STP|PCN_RXSTAT_ENP|PCN_RXSTAT_OWN; 82766131Swpaul 82866131Swpaul return(0); 82966131Swpaul} 83066131Swpaul 83166131Swpaul/* 83266131Swpaul * A frame has been uploaded: pass the resulting mbuf chain up to 83366131Swpaul * the higher level protocols. 83466131Swpaul */ 835102335Salfredstatic void 836102335Salfredpcn_rxeof(sc) 83766131Swpaul struct pcn_softc *sc; 83866131Swpaul{ 83966131Swpaul struct mbuf *m; 84066131Swpaul struct ifnet *ifp; 84166131Swpaul struct pcn_rx_desc *cur_rx; 84266131Swpaul int i; 84366131Swpaul 844122689Ssam PCN_LOCK_ASSERT(sc); 845122689Ssam 846147256Sbrooks ifp = sc->pcn_ifp; 84766131Swpaul i = sc->pcn_cdata.pcn_rx_prod; 84866131Swpaul 84966131Swpaul while(PCN_OWN_RXDESC(&sc->pcn_ldata->pcn_rx_list[i])) { 85066131Swpaul cur_rx = &sc->pcn_ldata->pcn_rx_list[i]; 85166131Swpaul m = sc->pcn_cdata.pcn_rx_chain[i]; 85266131Swpaul sc->pcn_cdata.pcn_rx_chain[i] = NULL; 85366131Swpaul 85466131Swpaul /* 85566131Swpaul * If an error occurs, update stats, clear the 85666131Swpaul * status word and leave the mbuf cluster in place: 85766131Swpaul * it should simply get re-used next time this descriptor 85866131Swpaul * comes up in the ring. 85966131Swpaul */ 86066131Swpaul if (cur_rx->pcn_rxstat & PCN_RXSTAT_ERR) { 86166131Swpaul ifp->if_ierrors++; 86266131Swpaul pcn_newbuf(sc, i, m); 86366131Swpaul PCN_INC(i, PCN_RX_LIST_CNT); 86466131Swpaul continue; 86566131Swpaul } 86666131Swpaul 86766592Swpaul if (pcn_newbuf(sc, i, NULL)) { 86866592Swpaul /* Ran out of mbufs; recycle this one. */ 86966592Swpaul pcn_newbuf(sc, i, m); 87066592Swpaul ifp->if_ierrors++; 87166592Swpaul PCN_INC(i, PCN_RX_LIST_CNT); 87266592Swpaul continue; 87366592Swpaul } 87466592Swpaul 87566131Swpaul PCN_INC(i, PCN_RX_LIST_CNT); 87666131Swpaul 87766131Swpaul /* No errors; receive the packet. */ 87866131Swpaul ifp->if_ipackets++; 87966131Swpaul m->m_len = m->m_pkthdr.len = 88066131Swpaul cur_rx->pcn_rxlen - ETHER_CRC_LEN; 88166131Swpaul m->m_pkthdr.rcvif = ifp; 88266131Swpaul 883122689Ssam PCN_UNLOCK(sc); 884106936Ssam (*ifp->if_input)(ifp, m); 885122689Ssam PCN_LOCK(sc); 88666131Swpaul } 88766131Swpaul 88866131Swpaul sc->pcn_cdata.pcn_rx_prod = i; 88966131Swpaul 89066131Swpaul return; 89166131Swpaul} 89266131Swpaul 89366131Swpaul/* 89466131Swpaul * A frame was downloaded to the chip. It's safe for us to clean up 89566131Swpaul * the list buffers. 89666131Swpaul */ 89766131Swpaul 898102335Salfredstatic void 899102335Salfredpcn_txeof(sc) 90066131Swpaul struct pcn_softc *sc; 90166131Swpaul{ 90266131Swpaul struct pcn_tx_desc *cur_tx = NULL; 90366131Swpaul struct ifnet *ifp; 90466131Swpaul u_int32_t idx; 90566131Swpaul 906147256Sbrooks ifp = sc->pcn_ifp; 90766131Swpaul 90866131Swpaul /* 90966131Swpaul * Go through our tx list and free mbufs for those 91066131Swpaul * frames that have been transmitted. 91166131Swpaul */ 91266131Swpaul idx = sc->pcn_cdata.pcn_tx_cons; 91366131Swpaul while (idx != sc->pcn_cdata.pcn_tx_prod) { 91466131Swpaul cur_tx = &sc->pcn_ldata->pcn_tx_list[idx]; 91566131Swpaul 91666131Swpaul if (!PCN_OWN_TXDESC(cur_tx)) 91766131Swpaul break; 91866131Swpaul 91966131Swpaul if (!(cur_tx->pcn_txctl & PCN_TXCTL_ENP)) { 92066131Swpaul sc->pcn_cdata.pcn_tx_cnt--; 92166131Swpaul PCN_INC(idx, PCN_TX_LIST_CNT); 92266131Swpaul continue; 92366131Swpaul } 92466131Swpaul 92566131Swpaul if (cur_tx->pcn_txctl & PCN_TXCTL_ERR) { 92666131Swpaul ifp->if_oerrors++; 92766131Swpaul if (cur_tx->pcn_txstat & PCN_TXSTAT_EXDEF) 92866131Swpaul ifp->if_collisions++; 92966131Swpaul if (cur_tx->pcn_txstat & PCN_TXSTAT_RTRY) 93066131Swpaul ifp->if_collisions++; 93166131Swpaul } 93266131Swpaul 93366131Swpaul ifp->if_collisions += 93466131Swpaul cur_tx->pcn_txstat & PCN_TXSTAT_TRC; 93566131Swpaul 93666131Swpaul ifp->if_opackets++; 93766131Swpaul if (sc->pcn_cdata.pcn_tx_chain[idx] != NULL) { 93866131Swpaul m_freem(sc->pcn_cdata.pcn_tx_chain[idx]); 93966131Swpaul sc->pcn_cdata.pcn_tx_chain[idx] = NULL; 94066131Swpaul } 94166131Swpaul 94266131Swpaul sc->pcn_cdata.pcn_tx_cnt--; 94366131Swpaul PCN_INC(idx, PCN_TX_LIST_CNT); 94466131Swpaul } 94566131Swpaul 94699165Sluigi if (idx != sc->pcn_cdata.pcn_tx_cons) { 94799165Sluigi /* Some buffers have been freed. */ 94899165Sluigi sc->pcn_cdata.pcn_tx_cons = idx; 949148887Srwatson ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 95099165Sluigi } 95199165Sluigi ifp->if_timer = (sc->pcn_cdata.pcn_tx_cnt == 0) ? 0 : 5; 95266131Swpaul 95366131Swpaul return; 95466131Swpaul} 95566131Swpaul 956102335Salfredstatic void 957102335Salfredpcn_tick(xsc) 95866131Swpaul void *xsc; 95966131Swpaul{ 96066131Swpaul struct pcn_softc *sc; 96166131Swpaul struct mii_data *mii; 96266131Swpaul struct ifnet *ifp; 96366131Swpaul 96466131Swpaul sc = xsc; 965147256Sbrooks ifp = sc->pcn_ifp; 966149204Sjhb PCN_LOCK_ASSERT(sc); 96766131Swpaul 96866131Swpaul mii = device_get_softc(sc->pcn_miibus); 96966131Swpaul mii_tick(mii); 97066131Swpaul 97184147Sjlemon /* link just died */ 97266131Swpaul if (sc->pcn_link & !(mii->mii_media_status & IFM_ACTIVE)) 97366131Swpaul sc->pcn_link = 0; 97466131Swpaul 97584147Sjlemon /* link just came up, restart */ 97684147Sjlemon if (!sc->pcn_link && mii->mii_media_status & IFM_ACTIVE && 97784147Sjlemon IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { 97884147Sjlemon sc->pcn_link++; 97984147Sjlemon if (ifp->if_snd.ifq_head != NULL) 980148738Sjhb pcn_start_locked(ifp); 98166131Swpaul } 98266131Swpaul 983148738Sjhb callout_reset(&sc->pcn_stat_callout, hz, pcn_tick, sc); 98466131Swpaul 98566131Swpaul return; 98666131Swpaul} 98766131Swpaul 988102335Salfredstatic void 989102335Salfredpcn_intr(arg) 99066131Swpaul void *arg; 99166131Swpaul{ 99266131Swpaul struct pcn_softc *sc; 99366131Swpaul struct ifnet *ifp; 99466131Swpaul u_int32_t status; 99566131Swpaul 99666131Swpaul sc = arg; 997147256Sbrooks ifp = sc->pcn_ifp; 99866131Swpaul 999148738Sjhb PCN_LOCK(sc); 1000148738Sjhb 1001134842Sbrueffer /* Suppress unwanted interrupts */ 100266131Swpaul if (!(ifp->if_flags & IFF_UP)) { 100366131Swpaul pcn_stop(sc); 1004148738Sjhb PCN_UNLOCK(sc); 100566131Swpaul return; 100666131Swpaul } 100766131Swpaul 100866131Swpaul CSR_WRITE_4(sc, PCN_IO32_RAP, PCN_CSR_CSR); 100966131Swpaul 101066131Swpaul while ((status = CSR_READ_4(sc, PCN_IO32_RDP)) & PCN_CSR_INTR) { 101166131Swpaul CSR_WRITE_4(sc, PCN_IO32_RDP, status); 101266131Swpaul 101366131Swpaul if (status & PCN_CSR_RINT) 101466131Swpaul pcn_rxeof(sc); 101566131Swpaul 101666131Swpaul if (status & PCN_CSR_TINT) 101766131Swpaul pcn_txeof(sc); 101866131Swpaul 101966131Swpaul if (status & PCN_CSR_ERR) { 1020148738Sjhb pcn_init_locked(sc); 102166131Swpaul break; 102266131Swpaul } 102366131Swpaul } 102466131Swpaul 102566131Swpaul if (ifp->if_snd.ifq_head != NULL) 1026148738Sjhb pcn_start_locked(ifp); 102766131Swpaul 1028110567Smdodd PCN_UNLOCK(sc); 102966131Swpaul return; 103066131Swpaul} 103166131Swpaul 103266131Swpaul/* 103366131Swpaul * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 103466131Swpaul * pointers to the fragment pointers. 103566131Swpaul */ 1036102335Salfredstatic int 1037102335Salfredpcn_encap(sc, m_head, txidx) 103866131Swpaul struct pcn_softc *sc; 103966131Swpaul struct mbuf *m_head; 104066131Swpaul u_int32_t *txidx; 104166131Swpaul{ 104266131Swpaul struct pcn_tx_desc *f = NULL; 104366131Swpaul struct mbuf *m; 104466131Swpaul int frag, cur, cnt = 0; 104566131Swpaul 104666131Swpaul /* 104766131Swpaul * Start packing the mbufs in this chain into 104866131Swpaul * the fragment pointers. Stop when we run out 104966131Swpaul * of fragments or hit the end of the mbuf chain. 105066131Swpaul */ 105166131Swpaul m = m_head; 105266131Swpaul cur = frag = *txidx; 105366131Swpaul 105466131Swpaul for (m = m_head; m != NULL; m = m->m_next) { 1055144981Smdodd if (m->m_len == 0) 1056144981Smdodd continue; 1057144981Smdodd 1058144981Smdodd if ((PCN_TX_LIST_CNT - (sc->pcn_cdata.pcn_tx_cnt + cnt)) < 2) 1059144981Smdodd return(ENOBUFS); 1060144981Smdodd f = &sc->pcn_ldata->pcn_tx_list[frag]; 1061144981Smdodd f->pcn_txctl = (~(m->m_len) + 1) & PCN_TXCTL_BUFSZ; 1062144981Smdodd f->pcn_txctl |= PCN_TXCTL_MBO; 1063144981Smdodd f->pcn_tbaddr = vtophys(mtod(m, vm_offset_t)); 1064144981Smdodd if (cnt == 0) 1065144981Smdodd f->pcn_txctl |= PCN_TXCTL_STP; 1066144981Smdodd else 1067144981Smdodd f->pcn_txctl |= PCN_TXCTL_OWN; 1068144981Smdodd cur = frag; 1069144981Smdodd PCN_INC(frag, PCN_TX_LIST_CNT); 1070144981Smdodd cnt++; 107166131Swpaul } 107266131Swpaul 107366131Swpaul if (m != NULL) 107466131Swpaul return(ENOBUFS); 107566131Swpaul 107666131Swpaul sc->pcn_cdata.pcn_tx_chain[cur] = m_head; 107766131Swpaul sc->pcn_ldata->pcn_tx_list[cur].pcn_txctl |= 107866131Swpaul PCN_TXCTL_ENP|PCN_TXCTL_ADD_FCS|PCN_TXCTL_MORE_LTINT; 107966131Swpaul sc->pcn_ldata->pcn_tx_list[*txidx].pcn_txctl |= PCN_TXCTL_OWN; 108066131Swpaul sc->pcn_cdata.pcn_tx_cnt += cnt; 108166131Swpaul *txidx = frag; 108266131Swpaul 108366131Swpaul return(0); 108466131Swpaul} 108566131Swpaul 108666131Swpaul/* 108766131Swpaul * Main transmit routine. To avoid having to do mbuf copies, we put pointers 108866131Swpaul * to the mbuf data regions directly in the transmit lists. We also save a 108966131Swpaul * copy of the pointers since the transmit list fragment pointers are 109066131Swpaul * physical addresses. 109166131Swpaul */ 1092102335Salfredstatic void 1093102335Salfredpcn_start(ifp) 109466131Swpaul struct ifnet *ifp; 109566131Swpaul{ 109666131Swpaul struct pcn_softc *sc; 1097148738Sjhb 1098148738Sjhb sc = ifp->if_softc; 1099148738Sjhb PCN_LOCK(sc); 1100148738Sjhb pcn_start_locked(ifp); 1101148738Sjhb PCN_UNLOCK(sc); 1102148738Sjhb} 1103148738Sjhb 1104148738Sjhbstatic void 1105148738Sjhbpcn_start_locked(ifp) 1106148738Sjhb struct ifnet *ifp; 1107148738Sjhb{ 1108148738Sjhb struct pcn_softc *sc; 110966131Swpaul struct mbuf *m_head = NULL; 111066131Swpaul u_int32_t idx; 111166131Swpaul 111266131Swpaul sc = ifp->if_softc; 111366131Swpaul 1114148738Sjhb PCN_LOCK_ASSERT(sc); 111567087Swpaul 1116148738Sjhb if (!sc->pcn_link) 111766131Swpaul return; 111866131Swpaul 111966131Swpaul idx = sc->pcn_cdata.pcn_tx_prod; 112066131Swpaul 1121148887Srwatson if (ifp->if_drv_flags & IFF_DRV_OACTIVE) 112266131Swpaul return; 112366131Swpaul 112466131Swpaul while(sc->pcn_cdata.pcn_tx_chain[idx] == NULL) { 112566131Swpaul IF_DEQUEUE(&ifp->if_snd, m_head); 112666131Swpaul if (m_head == NULL) 112766131Swpaul break; 112866131Swpaul 112966131Swpaul if (pcn_encap(sc, m_head, &idx)) { 113066131Swpaul IF_PREPEND(&ifp->if_snd, m_head); 1131148887Srwatson ifp->if_drv_flags |= IFF_DRV_OACTIVE; 113266131Swpaul break; 113366131Swpaul } 113466131Swpaul 113566131Swpaul /* 113666131Swpaul * If there's a BPF listener, bounce a copy of this frame 113766131Swpaul * to him. 113866131Swpaul */ 1139106936Ssam BPF_MTAP(ifp, m_head); 114066131Swpaul 114166131Swpaul } 114266131Swpaul 114366131Swpaul /* Transmit */ 114466131Swpaul sc->pcn_cdata.pcn_tx_prod = idx; 114566131Swpaul pcn_csr_write(sc, PCN_CSR_CSR, PCN_CSR_TX|PCN_CSR_INTEN); 114666131Swpaul 114766131Swpaul /* 114866131Swpaul * Set a timeout in case the chip goes out to lunch. 114966131Swpaul */ 115066131Swpaul ifp->if_timer = 5; 115166131Swpaul 115266131Swpaul return; 115366131Swpaul} 115466131Swpaul 1155102335Salfredstatic void 1156102335Salfredpcn_setfilt(ifp) 115768270Swpaul struct ifnet *ifp; 115868270Swpaul{ 115968270Swpaul struct pcn_softc *sc; 116068270Swpaul 116168270Swpaul sc = ifp->if_softc; 116268270Swpaul 116368270Swpaul /* If we want promiscuous mode, set the allframes bit. */ 116468270Swpaul if (ifp->if_flags & IFF_PROMISC) { 116568270Swpaul PCN_CSR_SETBIT(sc, PCN_CSR_MODE, PCN_MODE_PROMISC); 116668270Swpaul } else { 116768270Swpaul PCN_CSR_CLRBIT(sc, PCN_CSR_MODE, PCN_MODE_PROMISC); 116868270Swpaul } 116968270Swpaul 117068270Swpaul /* Set the capture broadcast bit to capture broadcast frames. */ 117168270Swpaul if (ifp->if_flags & IFF_BROADCAST) { 117268270Swpaul PCN_CSR_CLRBIT(sc, PCN_CSR_MODE, PCN_MODE_RXNOBROAD); 117368270Swpaul } else { 117468270Swpaul PCN_CSR_SETBIT(sc, PCN_CSR_MODE, PCN_MODE_RXNOBROAD); 117568270Swpaul } 117668270Swpaul 117768270Swpaul return; 117868270Swpaul} 117968270Swpaul 1180102335Salfredstatic void 1181102335Salfredpcn_init(xsc) 118266131Swpaul void *xsc; 118366131Swpaul{ 118466131Swpaul struct pcn_softc *sc = xsc; 1185148738Sjhb 1186148738Sjhb PCN_LOCK(sc); 1187148738Sjhb pcn_init_locked(sc); 1188148738Sjhb PCN_UNLOCK(sc); 1189148738Sjhb} 1190148738Sjhb 1191148738Sjhbstatic void 1192148738Sjhbpcn_init_locked(sc) 1193148738Sjhb struct pcn_softc *sc; 1194148738Sjhb{ 1195147256Sbrooks struct ifnet *ifp = sc->pcn_ifp; 119666131Swpaul struct mii_data *mii = NULL; 1197164712Smarius struct ifmedia_entry *ife; 119866131Swpaul 1199148738Sjhb PCN_LOCK_ASSERT(sc); 120066131Swpaul 120166131Swpaul /* 120266131Swpaul * Cancel pending I/O and free all RX/TX buffers. 120366131Swpaul */ 120466131Swpaul pcn_stop(sc); 120566131Swpaul pcn_reset(sc); 120666131Swpaul 120766131Swpaul mii = device_get_softc(sc->pcn_miibus); 1208164712Smarius ife = mii->mii_media.ifm_cur; 120966131Swpaul 121066131Swpaul /* Set MAC address */ 121166131Swpaul pcn_csr_write(sc, PCN_CSR_PAR0, 1212152315Sru ((u_int16_t *)IF_LLADDR(sc->pcn_ifp))[0]); 121366131Swpaul pcn_csr_write(sc, PCN_CSR_PAR1, 1214152315Sru ((u_int16_t *)IF_LLADDR(sc->pcn_ifp))[1]); 121566131Swpaul pcn_csr_write(sc, PCN_CSR_PAR2, 1216152315Sru ((u_int16_t *)IF_LLADDR(sc->pcn_ifp))[2]); 121766131Swpaul 121866131Swpaul /* Init circular RX list. */ 121966131Swpaul if (pcn_list_rx_init(sc) == ENOBUFS) { 1220164072Smarius if_printf(ifp, "initialization failed: no " 1221164072Smarius "memory for rx buffers\n"); 122266131Swpaul pcn_stop(sc); 122366131Swpaul return; 122466131Swpaul } 122566131Swpaul 122666131Swpaul /* 122766131Swpaul * Init tx descriptors. 122866131Swpaul */ 122966131Swpaul pcn_list_tx_init(sc); 123066131Swpaul 1231164712Smarius /* Clear PCN_MISC_ASEL so we can set the port via PCN_CSR_MODE. */ 1232164712Smarius PCN_BCR_CLRBIT(sc, PCN_BCR_MISCCFG, PCN_MISC_ASEL); 123366131Swpaul 1234164712Smarius /* 1235164712Smarius * Set up the port based on the currently selected media. 1236164712Smarius * For Am79C978 we've to unconditionally set PCN_PORT_MII and 1237164712Smarius * set the PHY in PCN_BCR_PHYSEL instead. 1238164712Smarius */ 1239164712Smarius if (sc->pcn_type != Am79C978 && 1240164712Smarius IFM_INST(ife->ifm_media) == sc->pcn_inst_10bt) 1241164712Smarius pcn_csr_write(sc, PCN_CSR_MODE, PCN_PORT_10BASET); 1242164712Smarius else 1243164712Smarius pcn_csr_write(sc, PCN_CSR_MODE, PCN_PORT_MII); 1244164712Smarius 124568270Swpaul /* Set up RX filter. */ 124668270Swpaul pcn_setfilt(ifp); 124766131Swpaul 124866131Swpaul /* 124966131Swpaul * Load the multicast filter. 125066131Swpaul */ 125166131Swpaul pcn_setmulti(sc); 125266131Swpaul 125366131Swpaul /* 125466131Swpaul * Load the addresses of the RX and TX lists. 125566131Swpaul */ 125666131Swpaul pcn_csr_write(sc, PCN_CSR_RXADDR0, 125766131Swpaul vtophys(&sc->pcn_ldata->pcn_rx_list[0]) & 0xFFFF); 125866131Swpaul pcn_csr_write(sc, PCN_CSR_RXADDR1, 125966131Swpaul (vtophys(&sc->pcn_ldata->pcn_rx_list[0]) >> 16) & 0xFFFF); 126066131Swpaul pcn_csr_write(sc, PCN_CSR_TXADDR0, 126166131Swpaul vtophys(&sc->pcn_ldata->pcn_tx_list[0]) & 0xFFFF); 126266131Swpaul pcn_csr_write(sc, PCN_CSR_TXADDR1, 126366131Swpaul (vtophys(&sc->pcn_ldata->pcn_tx_list[0]) >> 16) & 0xFFFF); 126466131Swpaul 126566131Swpaul /* Set the RX and TX ring sizes. */ 126666131Swpaul pcn_csr_write(sc, PCN_CSR_RXRINGLEN, (~PCN_RX_LIST_CNT) + 1); 126766131Swpaul pcn_csr_write(sc, PCN_CSR_TXRINGLEN, (~PCN_TX_LIST_CNT) + 1); 126866131Swpaul 126966131Swpaul /* We're not using the initialization block. */ 127066131Swpaul pcn_csr_write(sc, PCN_CSR_IAB1, 0); 127166131Swpaul 127266131Swpaul /* Enable fast suspend mode. */ 127366131Swpaul PCN_CSR_SETBIT(sc, PCN_CSR_EXTCTL2, PCN_EXTCTL2_FASTSPNDE); 127466131Swpaul 127566131Swpaul /* 127666131Swpaul * Enable burst read and write. Also set the no underflow 127766131Swpaul * bit. This will avoid transmit underruns in certain 127866210Swpaul * conditions while still providing decent performance. 127966131Swpaul */ 128066131Swpaul PCN_BCR_SETBIT(sc, PCN_BCR_BUSCTL, PCN_BUSCTL_NOUFLOW| 128166131Swpaul PCN_BUSCTL_BREAD|PCN_BUSCTL_BWRITE); 128266131Swpaul 128366131Swpaul /* Enable graceful recovery from underflow. */ 128466131Swpaul PCN_CSR_SETBIT(sc, PCN_CSR_IMR, PCN_IMR_DXSUFLO); 128566131Swpaul 128666131Swpaul /* Enable auto-padding of short TX frames. */ 128766131Swpaul PCN_CSR_SETBIT(sc, PCN_CSR_TFEAT, PCN_TFEAT_PAD_TX); 128866131Swpaul 128966131Swpaul /* Disable MII autoneg (we handle this ourselves). */ 129077786Swpaul PCN_BCR_SETBIT(sc, PCN_BCR_MIICTL, PCN_MIICTL_DANAS); 129166131Swpaul 129266131Swpaul if (sc->pcn_type == Am79C978) 1293164712Smarius /* XXX support other PHYs? */ 129466131Swpaul pcn_bcr_write(sc, PCN_BCR_PHYSEL, 129566131Swpaul PCN_PHYSEL_PCNET|PCN_PHY_HOMEPNA); 129666131Swpaul 129766131Swpaul /* Enable interrupts and start the controller running. */ 129866131Swpaul pcn_csr_write(sc, PCN_CSR_CSR, PCN_CSR_INTEN|PCN_CSR_START); 129966131Swpaul 130066131Swpaul mii_mediachg(mii); 130166131Swpaul 1302148887Srwatson ifp->if_drv_flags |= IFF_DRV_RUNNING; 1303148887Srwatson ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 130466131Swpaul 1305148738Sjhb callout_reset(&sc->pcn_stat_callout, hz, pcn_tick, sc); 130666131Swpaul 130766131Swpaul return; 130866131Swpaul} 130966131Swpaul 131066131Swpaul/* 131166131Swpaul * Set media options. 131266131Swpaul */ 1313102335Salfredstatic int 1314102335Salfredpcn_ifmedia_upd(ifp) 131566131Swpaul struct ifnet *ifp; 131666131Swpaul{ 131766131Swpaul struct pcn_softc *sc; 131866131Swpaul 131966131Swpaul sc = ifp->if_softc; 132066131Swpaul 1321148738Sjhb PCN_LOCK(sc); 1322164712Smarius 1323164712Smarius /* 1324164712Smarius * At least Am79C971 with DP83840A can wedge when switching 1325164712Smarius * from the internal 10baseT PHY to the external PHY without 1326164712Smarius * issuing pcn_reset(). For setting the port in PCN_CSR_MODE 1327164712Smarius * the PCnet chip has to be powered down or stopped anyway 1328164712Smarius * and although documented otherwise it doesn't take effect 1329164712Smarius * until the next initialization. 1330164712Smarius */ 133166131Swpaul sc->pcn_link = 0; 1332164712Smarius pcn_stop(sc); 1333164712Smarius pcn_reset(sc); 1334164712Smarius pcn_init_locked(sc); 1335164712Smarius if (ifp->if_snd.ifq_head != NULL) 1336164712Smarius pcn_start_locked(ifp); 1337164712Smarius 1338148738Sjhb PCN_UNLOCK(sc); 133966131Swpaul 134066131Swpaul return(0); 134166131Swpaul} 134266131Swpaul 134366131Swpaul/* 134466131Swpaul * Report current media status. 134566131Swpaul */ 1346102335Salfredstatic void 1347102335Salfredpcn_ifmedia_sts(ifp, ifmr) 134866131Swpaul struct ifnet *ifp; 134966131Swpaul struct ifmediareq *ifmr; 135066131Swpaul{ 135166131Swpaul struct pcn_softc *sc; 135266131Swpaul struct mii_data *mii; 135366131Swpaul 135466131Swpaul sc = ifp->if_softc; 135566131Swpaul 135666131Swpaul mii = device_get_softc(sc->pcn_miibus); 1357148738Sjhb PCN_LOCK(sc); 135866131Swpaul mii_pollstat(mii); 135966131Swpaul ifmr->ifm_active = mii->mii_media_active; 136066131Swpaul ifmr->ifm_status = mii->mii_media_status; 1361148738Sjhb PCN_UNLOCK(sc); 136266131Swpaul 136366131Swpaul return; 136466131Swpaul} 136566131Swpaul 1366102335Salfredstatic int 1367102335Salfredpcn_ioctl(ifp, command, data) 136866131Swpaul struct ifnet *ifp; 136966131Swpaul u_long command; 137066131Swpaul caddr_t data; 137166131Swpaul{ 137266131Swpaul struct pcn_softc *sc = ifp->if_softc; 137366131Swpaul struct ifreq *ifr = (struct ifreq *) data; 137466131Swpaul struct mii_data *mii = NULL; 137567087Swpaul int error = 0; 137666131Swpaul 137766131Swpaul switch(command) { 137866131Swpaul case SIOCSIFFLAGS: 1379148738Sjhb PCN_LOCK(sc); 138066131Swpaul if (ifp->if_flags & IFF_UP) { 1381148887Srwatson if (ifp->if_drv_flags & IFF_DRV_RUNNING && 138266131Swpaul ifp->if_flags & IFF_PROMISC && 138366131Swpaul !(sc->pcn_if_flags & IFF_PROMISC)) { 138466131Swpaul PCN_CSR_SETBIT(sc, PCN_CSR_EXTCTL1, 138566131Swpaul PCN_EXTCTL1_SPND); 138668270Swpaul pcn_setfilt(ifp); 138766131Swpaul PCN_CSR_CLRBIT(sc, PCN_CSR_EXTCTL1, 138866131Swpaul PCN_EXTCTL1_SPND); 138966771Swpaul pcn_csr_write(sc, PCN_CSR_CSR, 139066771Swpaul PCN_CSR_INTEN|PCN_CSR_START); 1391148887Srwatson } else if (ifp->if_drv_flags & IFF_DRV_RUNNING && 139266131Swpaul !(ifp->if_flags & IFF_PROMISC) && 139366131Swpaul sc->pcn_if_flags & IFF_PROMISC) { 139466131Swpaul PCN_CSR_SETBIT(sc, PCN_CSR_EXTCTL1, 139566131Swpaul PCN_EXTCTL1_SPND); 139668270Swpaul pcn_setfilt(ifp); 139766131Swpaul PCN_CSR_CLRBIT(sc, PCN_CSR_EXTCTL1, 139866131Swpaul PCN_EXTCTL1_SPND); 139966771Swpaul pcn_csr_write(sc, PCN_CSR_CSR, 140066771Swpaul PCN_CSR_INTEN|PCN_CSR_START); 1401148887Srwatson } else if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 1402148738Sjhb pcn_init_locked(sc); 140366131Swpaul } else { 1404148887Srwatson if (ifp->if_drv_flags & IFF_DRV_RUNNING) 140566131Swpaul pcn_stop(sc); 140666131Swpaul } 140766131Swpaul sc->pcn_if_flags = ifp->if_flags; 1408148738Sjhb PCN_UNLOCK(sc); 140966131Swpaul error = 0; 141066131Swpaul break; 141166131Swpaul case SIOCADDMULTI: 141266131Swpaul case SIOCDELMULTI: 1413148738Sjhb PCN_LOCK(sc); 141466131Swpaul pcn_setmulti(sc); 1415148738Sjhb PCN_UNLOCK(sc); 141666131Swpaul error = 0; 141766131Swpaul break; 141866131Swpaul case SIOCGIFMEDIA: 141966131Swpaul case SIOCSIFMEDIA: 142066131Swpaul mii = device_get_softc(sc->pcn_miibus); 142166131Swpaul error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); 142266131Swpaul break; 142366131Swpaul default: 1424106936Ssam error = ether_ioctl(ifp, command, data); 142566131Swpaul break; 142666131Swpaul } 142766131Swpaul 142866131Swpaul return(error); 142966131Swpaul} 143066131Swpaul 1431102335Salfredstatic void 1432102335Salfredpcn_watchdog(ifp) 143366131Swpaul struct ifnet *ifp; 143466131Swpaul{ 143566131Swpaul struct pcn_softc *sc; 143666131Swpaul 143766131Swpaul sc = ifp->if_softc; 143866131Swpaul 143967087Swpaul PCN_LOCK(sc); 144067087Swpaul 144166131Swpaul ifp->if_oerrors++; 1442164072Smarius if_printf(ifp, "watchdog timeout\n"); 144366131Swpaul 144466131Swpaul pcn_stop(sc); 144566131Swpaul pcn_reset(sc); 1446148738Sjhb pcn_init_locked(sc); 144766131Swpaul 144866131Swpaul if (ifp->if_snd.ifq_head != NULL) 1449186715Sbrueffer pcn_start_locked(ifp); 145066131Swpaul 145167087Swpaul PCN_UNLOCK(sc); 145267087Swpaul 145366131Swpaul return; 145466131Swpaul} 145566131Swpaul 145666131Swpaul/* 145766131Swpaul * Stop the adapter and free any mbufs allocated to the 145866131Swpaul * RX and TX lists. 145966131Swpaul */ 1460102335Salfredstatic void 1461188177Simppcn_stop(struct pcn_softc *sc) 146266131Swpaul{ 146366131Swpaul register int i; 146466131Swpaul struct ifnet *ifp; 146566131Swpaul 1466148738Sjhb PCN_LOCK_ASSERT(sc); 1467147256Sbrooks ifp = sc->pcn_ifp; 146866131Swpaul ifp->if_timer = 0; 146966131Swpaul 1470148738Sjhb callout_stop(&sc->pcn_stat_callout); 1471110495Smdodd 1472110495Smdodd /* Turn off interrupts */ 1473110495Smdodd PCN_CSR_CLRBIT(sc, PCN_CSR_CSR, PCN_CSR_INTEN); 1474110495Smdodd /* Stop adapter */ 147566131Swpaul PCN_CSR_SETBIT(sc, PCN_CSR_CSR, PCN_CSR_STOP); 147666131Swpaul sc->pcn_link = 0; 147766131Swpaul 147866131Swpaul /* 147966131Swpaul * Free data in the RX lists. 148066131Swpaul */ 148166131Swpaul for (i = 0; i < PCN_RX_LIST_CNT; i++) { 148266131Swpaul if (sc->pcn_cdata.pcn_rx_chain[i] != NULL) { 148366131Swpaul m_freem(sc->pcn_cdata.pcn_rx_chain[i]); 148466131Swpaul sc->pcn_cdata.pcn_rx_chain[i] = NULL; 148566131Swpaul } 148666131Swpaul } 148766131Swpaul bzero((char *)&sc->pcn_ldata->pcn_rx_list, 148866131Swpaul sizeof(sc->pcn_ldata->pcn_rx_list)); 148966131Swpaul 149066131Swpaul /* 149166131Swpaul * Free the TX list buffers. 149266131Swpaul */ 149366131Swpaul for (i = 0; i < PCN_TX_LIST_CNT; i++) { 149466131Swpaul if (sc->pcn_cdata.pcn_tx_chain[i] != NULL) { 149566131Swpaul m_freem(sc->pcn_cdata.pcn_tx_chain[i]); 149666131Swpaul sc->pcn_cdata.pcn_tx_chain[i] = NULL; 149766131Swpaul } 149866131Swpaul } 149966131Swpaul 150066131Swpaul bzero((char *)&sc->pcn_ldata->pcn_tx_list, 150166131Swpaul sizeof(sc->pcn_ldata->pcn_tx_list)); 150266131Swpaul 1503148887Srwatson ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 150466131Swpaul 150566131Swpaul return; 150666131Swpaul} 150766131Swpaul 150866131Swpaul/* 150966131Swpaul * Stop all chip I/O so that the kernel's probe routines don't 151066131Swpaul * get confused by errant DMAs when rebooting. 151166131Swpaul */ 1512188177Simpstatic int 1513188177Simppcn_shutdown(device_t dev) 151466131Swpaul{ 151566131Swpaul struct pcn_softc *sc; 151666131Swpaul 151766131Swpaul sc = device_get_softc(dev); 151866131Swpaul 151967087Swpaul PCN_LOCK(sc); 152066131Swpaul pcn_reset(sc); 152166131Swpaul pcn_stop(sc); 152267087Swpaul PCN_UNLOCK(sc); 152366131Swpaul 1524188177Simp return 0; 152566131Swpaul} 1526