/* * AT&T GIS (nee NCR) WaveLAN card: * An Ethernet-like radio transceiver * controlled by an Intel 82586 coprocessor. */ #include #if defined(CONFIG_WAVELAN) #if defined(MODULE) #include #include #endif /* defined(MODULE) */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define STRUCT_CHECK 1 #include "i82586.h" #include "wavelan.h" #ifndef WAVELAN_DEBUG #define WAVELAN_DEBUG 0 #endif /* WAVELAN_DEBUG */ #define nels(a) (sizeof(a) / sizeof(a[0])) #define WATCHDOG_JIFFIES 512 /* TODO: express in HZ. */ typedef struct device device; typedef struct enet_statistics en_stats; typedef struct net_local net_local; typedef struct timer_list timer_list; struct net_local { en_stats stats; unsigned int tx_n_in_use; unsigned char nwid[2]; unsigned short hacr; unsigned short rx_head; unsigned short rx_last; unsigned short tx_first_free; unsigned short tx_first_in_use; unsigned int nresets; unsigned int correct_nwid; unsigned int wrong_nwid; unsigned int promiscuous; timer_list watchdog; device *dev; net_local *prev; net_local *next; }; extern int wavelan_probe(device *); /* See Space.c */ static char *version = "wavelan.c:v7 95/4/8\n"; /* * Entry point forward declarations. */ static int wavelan_probe1(device *, unsigned short); static int wavelan_open(device *); static int wavelan_send_packet(struct sk_buff *, device *); static void wavelan_interrupt(int, struct pt_regs *); static int wavelan_close(device *); static en_stats *wavelan_get_stats(device *); static void wavelan_set_multicast_list(device *, int, void *); /* * Other forward declarations. */ static void wavelan_cu_show_one(device *, net_local *, int, unsigned short); static void wavelan_cu_start(device *); static void wavelan_ru_start(device *); static void wavelan_watchdog(unsigned long); #if 0 static void wavelan_psa_show(psa_t *); static void wavelan_mmc_show(unsigned short); #endif /* 0 */ static void wavelan_scb_show(unsigned short); static void wavelan_ru_show(device *); static void wavelan_cu_show(device *); static void wavelan_dev_show(device *); static void wavelan_local_show(device *); static unsigned int wavelan_debug = WAVELAN_DEBUG; static net_local *first_wavelan = (net_local *)0; static unsigned long wavelan_splhi(void) { unsigned long flags; save_flags(flags); cli(); return flags; } static void wavelan_splx(unsigned long flags) { restore_flags(flags); } static unsigned short hasr_read(unsigned short ioaddr) { return inw(HASR(ioaddr)); } static void hacr_write(unsigned short ioaddr, int hacr) { outw(hacr, HACR(ioaddr)); } static void hacr_write_slow(unsigned short ioaddr, int hacr) { hacr_write(ioaddr, hacr); /* delay might only be needed sometimes */ udelay(1000); } /* * Set the channel attention bit. */ static void set_chan_attn(unsigned short ioaddr, unsigned short current_hacr) { hacr_write(ioaddr, current_hacr | HACR_CA); } /* * Reset, and then set host adaptor into default mode. */ static void wavelan_reset(unsigned short ioaddr) { hacr_write_slow(ioaddr, HACR_RESET); hacr_write(ioaddr, HACR_DEFAULT); } static void wavelan_16_off(unsigned short ioaddr, unsigned short hacr) { hacr &= ~HACR_16BITS; hacr_write(ioaddr, hacr); } static void wavelan_16_on(unsigned short ioaddr, unsigned short hacr) { hacr |= HACR_16BITS; hacr_write(ioaddr, hacr); } static void wavelan_ints_off(device *dev) { unsigned short ioaddr; net_local *lp; unsigned long x; ioaddr = dev->base_addr; lp = (net_local *)dev->priv; x = wavelan_splhi(); lp->hacr &= ~HACR_INTRON; hacr_write(ioaddr, lp->hacr); wavelan_splx(x); } static void wavelan_ints_on(device *dev) { unsigned short ioaddr; net_local *lp; unsigned long x; ioaddr = dev->base_addr; lp = (net_local *)dev->priv; x = wavelan_splhi(); lp->hacr |= HACR_INTRON; hacr_write(ioaddr, lp->hacr); wavelan_splx(x); } /* * Read bytes from the PSA. */ static void psa_read(unsigned short ioaddr, unsigned short hacr, int o, unsigned char *b, int n) { wavelan_16_off(ioaddr, hacr); while (n-- > 0) { outw(o, PIOR2(ioaddr)); o++; *b++ = inb(PIOP2(ioaddr)); } wavelan_16_on(ioaddr, hacr); } /* * Read bytes from the on-board RAM. */ static void obram_read(unsigned short ioaddr, unsigned short o, unsigned char *b, int n) { n = (n + 1) / (sizeof(unsigned short) / sizeof(unsigned char)); outw(o, PIOR1(ioaddr)); insw(PIOP1(ioaddr), (unsigned short *)b, n); } /* * Write bytes to the on-board RAM. */ static void obram_write(unsigned short ioaddr, unsigned short o, unsigned char *b, int n) { n = (n + 1) / (sizeof(unsigned short) / sizeof(unsigned char)); outw(o, PIOR1(ioaddr)); outsw(PIOP1(ioaddr), (unsigned short *)b, n); } /* * Read bytes from the MMC. */ static void mmc_read(unsigned short ioaddr, unsigned short o, unsigned char *b, int n) { while (n-- > 0) { while (inw(HASR(ioaddr)) & HASR_MMC_BUSY) ; outw(o << 1, MMCR(ioaddr)); o++; while (inw(HASR(ioaddr)) & HASR_MMC_BUSY) ; *b++ = (unsigned char)(inw(MMCR(ioaddr)) >> 8); } } /* * Write bytes to the MMC. */ static void mmc_write(unsigned short ioaddr, unsigned short o, unsigned char *b, int n) { while (n-- > 0) { while (inw(HASR(ioaddr)) & HASR_MMC_BUSY) ; outw((unsigned short)(((unsigned short)*b << 8) | (o << 1) | 1), MMCR(ioaddr)); b++; o++; } } /* * Map values from the irq parameter register to irq numbers. */ static int wavelan_map_irq(unsigned short ioaddr, unsigned char irqval) { int irq; static int irqvals[] = { 0, 0, 0, 0x01, 0x02, 0x04, 0, 0x08, 0, 0, 0x10, 0x20, 0x40, 0, 0, 0x80, }; for (irq = 0; irq < nels(irqvals); irq++) { if (irqvals[irq] == (int)irqval) return irq; } return -1; } /* * Initialize the Modem Management Controller. */ static void wavelan_mmc_init(device *dev, psa_t *psa) { unsigned short ioaddr; net_local *lp; mmw_t m; int configured; ioaddr = dev->base_addr; lp = (net_local *)dev->priv; memset(&m, 0x00, sizeof(m)); /* * configured = psa->psa_conf_status & 1; * * For now we use the persistent PSA * information as little as possible, thereby * allowing us to return to the same known state * during a hardware reset. */ configured = 0; /* * Set default modem control parameters. * See NCR document 407-0024326 Rev. A. */ m.mmw_jabber_enable = 0x01; m.mmw_anten_sel = MMW_ANTEN_SEL_ALG_EN; m.mmw_ifs = 0x20; m.mmw_mod_delay = 0x04; m.mmw_jam_time = 0x38; m.mmw_encr_enable = 0; m.mmw_des_io_invert = 0; m.mmw_freeze = 0; m.mmw_decay_prm = 0; m.mmw_decay_updat_prm = 0; if (configured) { /* * Use configuration defaults from parameter storage area. */ if (psa->psa_undefined & 1) m.mmw_loopt_sel = 0x00; else m.mmw_loopt_sel = MMW_LOOPT_SEL_UNDEFINED; m.mmw_thr_pre_set = psa->psa_thr_pre_set & 0x3F; m.mmw_quality_thr = psa->psa_quality_thr & 0x0F; } else { if (lp->promiscuous) m.mmw_loopt_sel = MMW_LOOPT_SEL_UNDEFINED; else m.mmw_loopt_sel = 0x00; /* * 0x04 for AT, * 0x01 for MCA. */ if (psa->psa_comp_number & 1) m.mmw_thr_pre_set = 0x01; else m.mmw_thr_pre_set = 0x04; m.mmw_quality_thr = 0x03; } m.mmw_netw_id_l = lp->nwid[1]; m.mmw_netw_id_h = lp->nwid[0]; mmc_write(ioaddr, 0, (unsigned char *)&m, sizeof(m)); } static void wavelan_ack(device *dev) { unsigned short ioaddr; net_local *lp; unsigned short scb_cs; int i; ioaddr = dev->base_addr; lp = (net_local *)dev->priv; obram_read(ioaddr, scboff(OFFSET_SCB, scb_status), (unsigned char *)&scb_cs, sizeof(scb_cs)); scb_cs &= SCB_ST_INT; if (scb_cs == 0) return; obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&scb_cs, sizeof(scb_cs)); set_chan_attn(ioaddr, lp->hacr); for (i = 1000; i > 0; i--) { obram_read(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&scb_cs, sizeof(scb_cs)); if (scb_cs == 0) break; udelay(1000); } if (i <= 0) printk("%s: wavelan_ack(): board not accepting command.\n", dev->name); } /* * Set channel attention bit and busy wait until command has * completed, then acknowledge the command completion. */ static int wavelan_synchronous_cmd(device *dev, char *str) { unsigned short ioaddr; net_local *lp; unsigned short scb_cmd; ach_t cb; int i; ioaddr = dev->base_addr; lp = (net_local *)dev->priv; scb_cmd = SCB_CMD_CUC & SCB_CMD_CUC_GO; obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&scb_cmd, sizeof(scb_cmd)); set_chan_attn(ioaddr, lp->hacr); for (i = 64; i > 0; i--) { obram_read(ioaddr, OFFSET_CU, (unsigned char *)&cb, sizeof(cb)); if (cb.ac_status & AC_SFLD_C) break; udelay(1000); } if (i <= 0 || !(cb.ac_status & AC_SFLD_OK)) { printk("%s: %s failed; status = 0x%x\n", dev->name, str, cb.ac_status); wavelan_scb_show(ioaddr); return -1; } wavelan_ack(dev); return 0; } static int wavelan_hardware_reset(device *dev) { unsigned short ioaddr; psa_t psa; net_local *lp; scp_t scp; iscp_t iscp; scb_t scb; ach_t cb; int i; ac_cfg_t cfg; ac_ias_t ias; if (wavelan_debug > 0) printk("%s: ->wavelan_hardware_reset(dev=0x%x)\n", dev->name, (unsigned int)dev); ioaddr = dev->base_addr; lp = (net_local *)dev->priv; lp->nresets++; wavelan_reset(ioaddr); lp->hacr = HACR_DEFAULT; /* * Clear the onboard RAM. */ { unsigned char zeroes[512]; memset(&zeroes[0], 0x00, sizeof(zeroes)); for (i = 0; i < I82586_MEMZ; i += sizeof(zeroes)) obram_write(ioaddr, i, &zeroes[0], sizeof(zeroes)); } psa_read(ioaddr, lp->hacr, 0, (unsigned char *)&psa, sizeof(psa)); wavelan_mmc_init(dev, &psa); /* * Construct the command unit structures: * scp, iscp, scb, cb. */ memset(&scp, 0x00, sizeof(scp)); scp.scp_sysbus = SCP_SY_16BBUS; scp.scp_iscpl = OFFSET_ISCP; obram_write(ioaddr, OFFSET_SCP, (unsigned char *)&scp, sizeof(scp)); memset(&iscp, 0x00, sizeof(iscp)); iscp.iscp_busy = 1; iscp.iscp_offset = OFFSET_SCB; obram_write(ioaddr, OFFSET_ISCP, (unsigned char *)&iscp, sizeof(iscp)); memset(&scb, 0x00, sizeof(scb)); scb.scb_command = SCB_CMD_RESET; scb.scb_cbl_offset = OFFSET_CU; scb.scb_rfa_offset = OFFSET_RU; obram_write(ioaddr, OFFSET_SCB, (unsigned char *)&scb, sizeof(scb)); set_chan_attn(ioaddr, lp->hacr); for (i = 1000; i > 0; i--) { obram_read(ioaddr, OFFSET_ISCP, (unsigned char *)&iscp, sizeof(iscp)); if (iscp.iscp_busy == (unsigned short)0) break; udelay(1000); } if (i <= 0) { printk("%s: wavelan_hardware_reset(): iscp_busy timeout.\n", dev->name); if (wavelan_debug > 0) printk("%s: <-wavelan_hardware_reset(): -1\n", dev->name); return -1; } for (i = 15; i > 0; i--) { obram_read(ioaddr, OFFSET_SCB, (unsigned char *)&scb, sizeof(scb)); if (scb.scb_status == (SCB_ST_CX | SCB_ST_CNA)) break; udelay(1000); } if (i <= 0) { printk("%s: wavelan_hardware_reset(): status: expected 0x%02x, got 0x%02x.\n", dev->name, SCB_ST_CX | SCB_ST_CNA, scb.scb_status); if (wavelan_debug > 0) printk("%s: <-wavelan_hardware_reset(): -1\n", dev->name); return -1; } wavelan_ack(dev); memset(&cb, 0x00, sizeof(cb)); cb.ac_command = AC_CFLD_EL | (AC_CFLD_CMD & acmd_diagnose); cb.ac_link = OFFSET_CU; obram_write(ioaddr, OFFSET_CU, (unsigned char *)&cb, sizeof(cb)); if (wavelan_synchronous_cmd(dev, "diag()") == -1) { if (wavelan_debug > 0) printk("%s: <-wavelan_hardware_reset(): -1\n", dev->name); return -1; } obram_read(ioaddr, OFFSET_CU, (unsigned char *)&cb, sizeof(cb)); if (cb.ac_status & AC_SFLD_FAIL) { printk("%s: wavelan_hardware_reset(): i82586 Self Test failed.\n", dev->name); if (wavelan_debug > 0) printk("%s: <-wavelan_hardware_reset(): -1\n", dev->name); return -1; } memset(&cfg, 0x00, sizeof(cfg)); #if 0 /* * The default board configuration. */ cfg.fifolim_bytecnt = 0x080c; cfg.addrlen_mode = 0x2600; cfg.linprio_interframe = 0x7820; /* IFS=120, ACS=2 */ cfg.slot_time = 0xf00c; /* slottime=12 */ cfg.hardware = 0x0008; /* tx even w/o CD */ cfg.min_frame_len = 0x0040; #endif /* 0 */ /* * For Linux we invert AC_CFG_ALOC(..) so as to conform * to the way that net packets reach us from above. * (See also ac_tx_t.) */ cfg.cfg_byte_cnt = AC_CFG_BYTE_CNT(sizeof(ac_cfg_t) - sizeof(ach_t)); cfg.cfg_fifolim = AC_CFG_FIFOLIM(8); cfg.cfg_byte8 = AC_CFG_SAV_BF(0) | AC_CFG_SRDY(0); cfg.cfg_byte9 = AC_CFG_ELPBCK(0) | AC_CFG_ILPBCK(0) | AC_CFG_PRELEN(AC_CFG_PLEN_2) | AC_CFG_ALOC(1) | AC_CFG_ADDRLEN(WAVELAN_ADDR_SIZE); cfg.cfg_byte10 = AC_CFG_BOFMET(0) | AC_CFG_ACR(0) | AC_CFG_LINPRIO(0); cfg.cfg_ifs = 32; cfg.cfg_slotl = 0; cfg.cfg_byte13 = AC_CFG_RETRYNUM(15) | AC_CFG_SLTTMHI(2); cfg.cfg_byte14 = AC_CFG_FLGPAD(0) | AC_CFG_BTSTF(0) | AC_CFG_CRC16(0) | AC_CFG_NCRC(0) | AC_CFG_TNCRS(1) | AC_CFG_MANCH(0) | AC_CFG_BCDIS(0) | AC_CFG_PRM(lp->promiscuous); cfg.cfg_byte15 = AC_CFG_ICDS(0) | AC_CFG_CDTF(0) | AC_CFG_ICSS(0) | AC_CFG_CSTF(0); /* cfg.cfg_min_frm_len = AC_CFG_MNFRM(64); */ cfg.cfg_min_frm_len = AC_CFG_MNFRM(8); cfg.cfg_h.ac_command = AC_CFLD_EL | (AC_CFLD_CMD & acmd_configure); cfg.cfg_h.ac_link = OFFSET_CU; obram_write(ioaddr, OFFSET_CU, (unsigned char *)&cfg, sizeof(cfg)); if (wavelan_synchronous_cmd(dev, "reset()-configure") == -1) { if (wavelan_debug > 0) printk("%s: <-wavelan_hardware_reset(): -1\n", dev->name); return -1; } memset(&ias, 0x00, sizeof(ias)); ias.ias_h.ac_command = AC_CFLD_EL | (AC_CFLD_CMD & acmd_ia_setup); ias.ias_h.ac_link = OFFSET_CU; memcpy(&ias.ias_addr[0], (unsigned char *)&dev->dev_addr[0], sizeof(ias.ias_addr)); obram_write(ioaddr, OFFSET_CU, (unsigned char *)&ias, sizeof(ias)); if (wavelan_synchronous_cmd(dev, "reset()-address") == -1) { if (wavelan_debug > 0) printk("%s: <-wavelan_hardware_reset(): -1\n", dev->name); return -1; } wavelan_ints_on(dev); if (wavelan_debug > 4) wavelan_scb_show(ioaddr); wavelan_ru_start(dev); wavelan_cu_start(dev); if (wavelan_debug > 0) printk("%s: <-wavelan_hardware_reset(): 0\n", dev->name); return 0; } #if STRUCT_CHECK == 1 static char * wavelan_struct_check(void) { #define SC(t,s,n) if (sizeof(t) != s) return n SC(psa_t, PSA_SIZE, "psa_t"); SC(mmw_t, MMW_SIZE, "mmw_t"); SC(mmr_t, MMR_SIZE, "mmr_t"); SC(ha_t, HA_SIZE, "ha_t"); #undef SC return (char *)0; } #endif /* STRUCT_CHECK == 1 */ /* * Check for a network adaptor of this type. * Return '0' iff one exists. * (There seem to be different interpretations of * the initial value of dev->base_addr. * We follow the example in drivers/net/ne.c.) */ int wavelan_probe(device *dev) { int i; int r; short base_addr; static unsigned short iobase[] = { #if 0 Leave out 0x3C0 for now -- seems to clash with some video controllers. Leave out the others too -- we will always use 0x390 and leave 0x300 for the Ethernet device. 0x300, 0x390, 0x3E0, 0x3C0, #endif /* 0 */ 0x390, }; if (wavelan_debug > 0) printk("%s: ->wavelan_probe(dev=0x%x (base_addr=0x%x))\n", dev->name, (unsigned int)dev, (unsigned int)dev->base_addr); #if STRUCT_CHECK == 1 if (wavelan_struct_check() != (char *)0) { printk("%s: structure/compiler botch: \"%s\"\n", dev->name, wavelan_struct_check()); if (wavelan_debug > 0) printk("%s: <-wavelan_probe(): ENODEV\n", dev->name); return ENODEV; } #endif /* STRUCT_CHECK == 1 */ base_addr = dev->base_addr; if (base_addr < 0) { /* * Don't probe at all. */ if (wavelan_debug > 0) printk("%s: <-wavelan_probe(): ENXIO\n", dev->name); return ENXIO; } if (base_addr > 0x100) { /* * Check a single specified location. */ r = wavelan_probe1(dev, base_addr); if (wavelan_debug > 0) printk("%s: <-wavelan_probe(): %d\n", dev->name, r); return r; } for (i = 0; i < nels(iobase); i++) { if (check_region(iobase[i], sizeof(ha_t))) continue; if (wavelan_probe1(dev, iobase[i]) == 0) { if (wavelan_debug > 0) printk("%s: <-wavelan_probe(): 0\n", dev->name); return 0; } } if (wavelan_debug > 0) printk("%s: <-wavelan_probe(): ENODEV\n", dev->name); return ENODEV; } static int wavelan_probe1(device *dev, unsigned short ioaddr) { psa_t psa; int irq; int i; net_local *lp; if (wavelan_debug > 0) printk("%s: ->wavelan_probe1(dev=0x%x, ioaddr=0x%x)\n", dev->name, (unsigned int)dev, ioaddr); wavelan_reset(ioaddr); psa_read(ioaddr, HACR_DEFAULT, 0, (unsigned char *)&psa, sizeof(psa)); /* * Check the first three octets of the MAC address * for the manufacturer's code. */ if ( psa.psa_univ_mac_addr[0] != SA_ADDR0 || psa.psa_univ_mac_addr[1] != SA_ADDR1 || psa.psa_univ_mac_addr[2] != SA_ADDR2 ) { if (wavelan_debug > 0) printk("%s: <-wavelan_probe1(): ENODEV\n", dev->name); return ENODEV; } printk("%s: WaveLAN at %#x,", dev->name, ioaddr); if ((irq = wavelan_map_irq(ioaddr, psa.psa_int_req_no)) == -1) { printk(" could not wavelan_map_irq(0x%x, %d).\n", ioaddr, psa.psa_int_req_no); if (wavelan_debug > 0) printk("%s: <-wavelan_probe1(): EAGAIN\n", dev->name); return EAGAIN; } dev->irq = irq; request_region(ioaddr, sizeof(ha_t), "wavelan"); dev->base_addr = ioaddr; /* * Apparently the third numeric argument to LILO's * `ether=' control line arrives here as `dev->mem_start'. * If it is non-zero we use it instead of the PSA NWID. */ if (dev->mem_start != 0) { psa.psa_nwid[0] = (dev->mem_start >> 8) & 0xFF; psa.psa_nwid[1] = (dev->mem_start >> 0) & 0xFF; } dev->mem_start = 0x0000; dev->mem_end = 0x0000; dev->if_port = 0; memcpy(&dev->dev_addr[0], &psa.psa_univ_mac_addr[0], WAVELAN_ADDR_SIZE); for (i = 0; i < WAVELAN_ADDR_SIZE; i++) printk("%s%02x", (i == 0) ? " " : ":", dev->dev_addr[i]); printk(", IRQ %d", dev->irq); printk(", nwid 0x%02x%02x", psa.psa_nwid[0], psa.psa_nwid[1]); printk(", PC"); switch (psa.psa_comp_number) { case PSA_COMP_PC_AT_915: case PSA_COMP_PC_AT_2400: printk("-AT"); break; case PSA_COMP_PC_MC_915: case PSA_COMP_PC_MC_2400: printk("-MC"); break; case PSA_COMP_PCMCIA_915: printk("MCIA"); break; default: printk("???"); break; } printk(", "); switch (psa.psa_subband) { case PSA_SUBBAND_915: printk("915"); break; case PSA_SUBBAND_2425: printk("2425"); break; case PSA_SUBBAND_2460: printk("2460"); break; case PSA_SUBBAND_2484: printk("2484"); break; case PSA_SUBBAND_2430_5: printk("2430.5"); break; default: printk("???"); break; } printk(" MHz"); printk("\n"); if (wavelan_debug > 0) printk(version); dev->priv = kmalloc(sizeof(net_local), GFP_KERNEL); memset(dev->priv, 0x00, sizeof(net_local)); lp = (net_local *)dev->priv; if (first_wavelan == (net_local *)0) { first_wavelan = lp; lp->prev = lp; lp->next = lp; } else { lp->prev = first_wavelan->prev; lp->next = first_wavelan; first_wavelan->prev->next = lp; first_wavelan->prev = lp; } lp->dev = dev; lp->hacr = HACR_DEFAULT; lp->nwid[0] = psa.psa_nwid[0]; lp->nwid[1] = psa.psa_nwid[1]; lp->watchdog.function = wavelan_watchdog; lp->watchdog.data = (unsigned long)dev; dev->open = wavelan_open; dev->stop = wavelan_close; dev->hard_start_xmit = wavelan_send_packet; dev->get_stats = wavelan_get_stats; dev->set_multicast_list = &wavelan_set_multicast_list; /* * Fill in the fields of the device structure * with ethernet-generic values. */ ether_setup(dev); dev->mtu = WAVELAN_MTU; if (wavelan_debug > 0) printk("%s: <-wavelan_probe1(): 0\n", dev->name); return 0; } /* * Construct the fd and rbd structures. * Start the receive unit. */ static void wavelan_ru_start(device *dev) { unsigned short ioaddr; net_local *lp; unsigned short scb_cs; fd_t fd; rbd_t rbd; unsigned short rx; unsigned short rx_next; int i; ioaddr = dev->base_addr; lp = (net_local *)dev->priv; obram_read(ioaddr, scboff(OFFSET_SCB, scb_status), (unsigned char *)&scb_cs, sizeof(scb_cs)); if ((scb_cs & SCB_ST_RUS) == SCB_ST_RUS_RDY) return; lp->rx_head = OFFSET_RU; for (i = 0, rx = lp->rx_head; i < NRXBLOCKS; i++, rx = rx_next) { rx_next = (i == NRXBLOCKS - 1) ? lp->rx_head : rx + RXBLOCKZ; fd.fd_status = 0; fd.fd_command = (i == NRXBLOCKS - 1) ? FD_COMMAND_EL : 0; fd.fd_link_offset = rx_next; fd.fd_rbd_offset = rx + sizeof(fd); obram_write(ioaddr, rx, (unsigned char *)&fd, sizeof(fd)); rbd.rbd_status = 0; rbd.rbd_next_rbd_offset = I82586NULL; rbd.rbd_bufl = rx + sizeof(fd) + sizeof(rbd); rbd.rbd_bufh = 0; rbd.rbd_el_size = RBD_EL | (RBD_SIZE & MAXDATAZ); obram_write(ioaddr, rx + sizeof(fd), (unsigned char *)&rbd, sizeof(rbd)); lp->rx_last = rx; } obram_write(ioaddr, scboff(OFFSET_SCB, scb_rfa_offset), (unsigned char *)&lp->rx_head, sizeof(lp->rx_head)); scb_cs = SCB_CMD_RUC_GO; obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&scb_cs, sizeof(scb_cs)); set_chan_attn(ioaddr, lp->hacr); for (i = 1000; i > 0; i--) { obram_read(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&scb_cs, sizeof(scb_cs)); if (scb_cs == 0) break; udelay(1000); } if (i <= 0) printk("%s: wavelan_ru_start(): board not accepting command.\n", dev->name); } /* * Initialise the transmit blocks. * Start the command unit executing the NOP * self-loop of the first transmit block. */ static void wavelan_cu_start(device *dev) { unsigned short ioaddr; net_local *lp; int i; unsigned short txblock; unsigned short first_nop; unsigned short scb_cs; ioaddr = dev->base_addr; lp = (net_local *)dev->priv; lp->tx_first_free = OFFSET_CU; lp->tx_first_in_use = I82586NULL; for ( i = 0, txblock = OFFSET_CU; i < NTXBLOCKS; i++, txblock += TXBLOCKZ ) { ac_tx_t tx; ac_nop_t nop; tbd_t tbd; unsigned short tx_addr; unsigned short nop_addr; unsigned short tbd_addr; unsigned short buf_addr; tx_addr = txblock; nop_addr = tx_addr + sizeof(tx); tbd_addr = nop_addr + sizeof(nop); buf_addr = tbd_addr + sizeof(tbd); tx.tx_h.ac_status = 0; tx.tx_h.ac_command = acmd_transmit | AC_CFLD_I; tx.tx_h.ac_link = nop_addr; tx.tx_tbd_offset = tbd_addr; obram_write(ioaddr, tx_addr, (unsigned char *)&tx, sizeof(tx)); nop.nop_h.ac_status = 0; nop.nop_h.ac_command = acmd_nop; nop.nop_h.ac_link = nop_addr; obram_write(ioaddr, nop_addr, (unsigned char *)&nop, sizeof(nop)); tbd.tbd_status = TBD_STATUS_EOF; tbd.tbd_next_bd_offset = I82586NULL; tbd.tbd_bufl = buf_addr; tbd.tbd_bufh = 0; obram_write(ioaddr, tbd_addr, (unsigned char *)&tbd, sizeof(tbd)); } first_nop = OFFSET_CU + (NTXBLOCKS - 1) * TXBLOCKZ + sizeof(ac_tx_t); obram_write(ioaddr, scboff(OFFSET_SCB, scb_cbl_offset), (unsigned char *)&first_nop, sizeof(first_nop)); scb_cs = SCB_CMD_CUC_GO; obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&scb_cs, sizeof(scb_cs)); set_chan_attn(ioaddr, lp->hacr); for (i = 1000; i > 0; i--) { obram_read(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&scb_cs, sizeof(scb_cs)); if (scb_cs == 0) break; udelay(1000); } if (i <= 0) printk("%s: wavelan_cu_start(): board not accepting command.\n", dev->name); lp->tx_n_in_use = 0; dev->tbusy = 0; } static int wavelan_open(device *dev) { unsigned short ioaddr; net_local *lp; unsigned long x; int r; if (wavelan_debug > 0) printk("%s: ->wavelan_open(dev=0x%x)\n", dev->name, (unsigned int)dev); ioaddr = dev->base_addr; lp = (net_local *)dev->priv; if (dev->irq == 0) { if (wavelan_debug > 0) printk("%s: <-wavelan_open(): -ENXIO\n", dev->name); return -ENXIO; } if ( irq2dev_map[dev->irq] != (device *)0 /* This is always true, but avoid the false IRQ. */ || (irq2dev_map[dev->irq] = dev) == (device *)0 || request_irq(dev->irq, &wavelan_interrupt, 0, "WaveLAN") != 0 ) { irq2dev_map[dev->irq] = (device *)0; if (wavelan_debug > 0) printk("%s: <-wavelan_open(): -EAGAIN\n", dev->name); return -EAGAIN; } x = wavelan_splhi(); if ((r = wavelan_hardware_reset(dev)) != -1) { dev->interrupt = 0; dev->start = 1; } wavelan_splx(x); if (r == -1) { free_irq(dev->irq); irq2dev_map[dev->irq] = (device *)0; if (wavelan_debug > 0) printk("%s: <-wavelan_open(): -EAGAIN(2)\n", dev->name); return -EAGAIN; } #if defined(MODULE) MOD_INC_USE_COUNT; #endif /* defined(MODULE) */ if (wavelan_debug > 0) printk("%s: <-wavelan_open(): 0\n", dev->name); return 0; } static void hardware_send_packet(device *dev, void *buf, short length) { unsigned short ioaddr; net_local *lp; unsigned short txblock; unsigned short txpred; unsigned short tx_addr; unsigned short nop_addr; unsigned short tbd_addr; unsigned short buf_addr; ac_tx_t tx; ac_nop_t nop; tbd_t tbd; unsigned long x; ioaddr = dev->base_addr; lp = (net_local *)dev->priv; x = wavelan_splhi(); txblock = lp->tx_first_free; txpred = txblock - TXBLOCKZ; if (txpred < OFFSET_CU) txpred += NTXBLOCKS * TXBLOCKZ; lp->tx_first_free += TXBLOCKZ; if (lp->tx_first_free >= OFFSET_CU + NTXBLOCKS * TXBLOCKZ) lp->tx_first_free -= NTXBLOCKS * TXBLOCKZ; /* if (lp->tx_n_in_use > 0) printk("%c", "0123456789abcdefghijk"[lp->tx_n_in_use]); */ lp->tx_n_in_use++; tx_addr = txblock; nop_addr = tx_addr + sizeof(tx); tbd_addr = nop_addr + sizeof(nop); buf_addr = tbd_addr + sizeof(tbd); /* * Transmit command. */ tx.tx_h.ac_status = 0; obram_write(ioaddr, toff(ac_tx_t, tx_addr, tx_h.ac_status), (unsigned char *)&tx.tx_h.ac_status, sizeof(tx.tx_h.ac_status)); /* * NOP command. */ nop.nop_h.ac_status = 0; obram_write(ioaddr, toff(ac_nop_t, nop_addr, nop_h.ac_status), (unsigned char *)&nop.nop_h.ac_status, sizeof(nop.nop_h.ac_status)); nop.nop_h.ac_link = nop_addr; obram_write(ioaddr, toff(ac_nop_t, nop_addr, nop_h.ac_link), (unsigned char *)&nop.nop_h.ac_link, sizeof(nop.nop_h.ac_link)); /* * Transmit buffer descriptor. */ tbd.tbd_status = TBD_STATUS_EOF | (TBD_STATUS_ACNT & length); tbd.tbd_next_bd_offset = I82586NULL; tbd.tbd_bufl = buf_addr; tbd.tbd_bufh = 0; obram_write(ioaddr, tbd_addr, (unsigned char *)&tbd, sizeof(tbd)); /* * Data. */ obram_write(ioaddr, buf_addr, buf, length); /* * Overwrite the predecessor NOP link * so that it points to this txblock. */ nop_addr = txpred + sizeof(tx); nop.nop_h.ac_status = 0; obram_write(ioaddr, toff(ac_nop_t, nop_addr, nop_h.ac_status), (unsigned char *)&nop.nop_h.ac_status, sizeof(nop.nop_h.ac_status)); nop.nop_h.ac_link = txblock; obram_write(ioaddr, toff(ac_nop_t, nop_addr, nop_h.ac_link), (unsigned char *)&nop.nop_h.ac_link, sizeof(nop.nop_h.ac_link)); if (lp->tx_first_in_use == I82586NULL) lp->tx_first_in_use = txblock; if (lp->tx_n_in_use < NTXBLOCKS - 1) dev->tbusy = 0; dev->trans_start = jiffies; if (lp->watchdog.next == (timer_list *)0) wavelan_watchdog((unsigned long)dev); wavelan_splx(x); if (wavelan_debug > 4) { unsigned char *a; a = (unsigned char *)buf; printk ( "%s: tx: dest %02x:%02x:%02x:%02x:%02x:%02x, length %d, tbd.tbd_bufl 0x%x.\n", dev->name, a[0], a[1], a[2], a[3], a[4], a[5], length, buf_addr ); } } static int wavelan_send_packet(struct sk_buff *skb, device *dev) { unsigned short ioaddr; ioaddr = dev->base_addr; if (dev->tbusy) { /* * If we get here, some higher level * has decided we are broken. */ int tickssofar; tickssofar = jiffies - dev->trans_start; /* * But for the moment, we will rely on wavelan_watchdog() * instead as it allows finer control over exactly when we * make the determination of failure. * if (tickssofar < 5) */ return 1; wavelan_scb_show(ioaddr); wavelan_ru_show(dev); wavelan_cu_show(dev); wavelan_dev_show(dev); wavelan_local_show(dev); printk("%s: transmit timed out -- resetting board.\n", dev->name); (void)wavelan_hardware_reset(dev); } /* * If some higher layer thinks we've missed * a tx-done interrupt we are passed NULL. * Caution: dev_tint() handles the cli()/sti() itself. */ if (skb == (struct sk_buff *)0) { dev_tint(dev); return 0; } /* * Block a timer-based transmit from overlapping. */ if (set_bit(0, (void *)&dev->tbusy) == 0) { short length; unsigned char *buf; length = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN; buf = skb->data; hardware_send_packet(dev, buf, length); } else printk("%s: Transmitter access conflict.\n", dev->name); dev_kfree_skb(skb, FREE_WRITE); return 0; } #if 0 static int addrcmp(unsigned char *a0, unsigned char *a1) { int i; for (i = 0; i < WAVELAN_ADDR_SIZE; i++) { if (a0[i] != a1[i]) return a0[i] - a1[i]; } return 0; } #endif /* 0 */ /* * Transfer as many packets as we can * from the device RAM. * Called by the interrupt handler. */ static void wavelan_receive(device *dev) { unsigned short ioaddr; net_local *lp; int nreaped; ioaddr = dev->base_addr; lp = (net_local *)dev->priv; nreaped = 0; for (;;) { fd_t fd; rbd_t rbd; ushort pkt_len; int sksize; struct sk_buff *skb; obram_read(ioaddr, lp->rx_head, (unsigned char *)&fd, sizeof(fd)); if ((fd.fd_status & FD_STATUS_C) != FD_STATUS_C) break; nreaped++; if ( (fd.fd_status & (FD_STATUS_B | FD_STATUS_OK)) != (FD_STATUS_B | FD_STATUS_OK) ) { /* * Not sure about this one -- it does not seem * to be an error so we will keep quiet about it. if ((fd.fd_status & FD_STATUS_B) != FD_STATUS_B) printk("%s: frame not consumed by RU.\n", dev->name); */ if ((fd.fd_status & FD_STATUS_OK) != FD_STATUS_OK) printk("%s: frame not received successfully.\n", dev->name); } if ((fd.fd_status & (FD_STATUS_S6 | FD_STATUS_S7 | FD_STATUS_S8 | FD_STATUS_S9 | FD_STATUS_S10 | FD_STATUS_S11)) != 0) { lp->stats.rx_errors++; if ((fd.fd_status & FD_STATUS_S6) != 0) printk("%s: no EOF flag.\n", dev->name); if ((fd.fd_status & FD_STATUS_S7) != 0) { lp->stats.rx_length_errors++; printk("%s: frame too short.\n", dev->name); } if ((fd.fd_status & FD_STATUS_S8) != 0) { lp->stats.rx_over_errors++; printk("%s: rx DMA overrun.\n", dev->name); } if ((fd.fd_status & FD_STATUS_S9) != 0) { lp->stats.rx_fifo_errors++; printk("%s: ran out of resources.\n", dev->name); } if ((fd.fd_status & FD_STATUS_S10) != 0) { lp->stats.rx_frame_errors++; printk("%s: alignment error.\n", dev->name); } if ((fd.fd_status & FD_STATUS_S11) != 0) { lp->stats.rx_crc_errors++; printk("%s: CRC error.\n", dev->name); } } if (fd.fd_rbd_offset == I82586NULL) printk("%s: frame has no data.\n", dev->name); else { obram_read(ioaddr, fd.fd_rbd_offset, (unsigned char *)&rbd, sizeof(rbd)); if ((rbd.rbd_status & RBD_STATUS_EOF) != RBD_STATUS_EOF) printk("%s: missing EOF flag.\n", dev->name); if ((rbd.rbd_status & RBD_STATUS_F) != RBD_STATUS_F) printk("%s: missing F flag.\n", dev->name); pkt_len = rbd.rbd_status & RBD_STATUS_ACNT; #if 0 { unsigned char addr[WAVELAN_ADDR_SIZE]; int i; static unsigned char toweraddr[WAVELAN_ADDR_SIZE] = { 0x08, 0x00, 0x0e, 0x20, 0x3e, 0xd3, }; obram_read(ioaddr, rbd.rbd_bufl + sizeof(addr), &addr[0], sizeof(addr)); if ( /* addrcmp(&addr[0], &dev->dev_addr[0]) != 0 && */ addrcmp(&addr[0], toweraddr) != 0 ) { printk("%s: foreign MAC source addr=", dev->name); for (i = 0; i < WAVELAN_ADDR_SIZE; i++) printk("%s%02x", (i == 0) ? "" : ":", addr[i]); printk("\n"); } } #endif /* 0 */ if (wavelan_debug > 5) { unsigned char addr[WAVELAN_ADDR_SIZE]; unsigned short ltype; int i; #if 0 printk("%s: fd_dest=", dev->name); for (i = 0; i < WAVELAN_ADDR_SIZE; i++) printk("%s%02x", (i == 0) ? "" : ":", fd.fd_dest[i]); printk("\n"); printk("%s: fd_src=", dev->name); for (i = 0; i < WAVELAN_ADDR_SIZE; i++) printk("%s%02x", (i == 0) ? "" : ":", fd.fd_src[i]); printk("\n"); printk("%s: fd_length=%d\n", dev->name, fd.fd_length); #endif /* 0 */ obram_read(ioaddr, rbd.rbd_bufl, &addr[0], sizeof(addr)); printk("%s: dest=", dev->name); for (i = 0; i < WAVELAN_ADDR_SIZE; i++) printk("%s%02x", (i == 0) ? "" : ":", addr[i]); printk("\n"); obram_read(ioaddr, rbd.rbd_bufl + sizeof(addr), &addr[0], sizeof(addr)); printk("%s: src=", dev->name); for (i = 0; i < WAVELAN_ADDR_SIZE; i++) printk("%s%02x", (i == 0) ? "" : ":", addr[i]); printk("\n"); obram_read(ioaddr, rbd.rbd_bufl + sizeof(addr) * 2, (unsigned char *)<ype, sizeof(ltype)); printk("%s: ntohs(length/type)=0x%04x\n", dev->name, ntohs(ltype)); } sksize = pkt_len; if ((skb = alloc_skb(sksize, GFP_ATOMIC)) == (struct sk_buff *)0) { printk("%s: could not alloc_skb(%d, GFP_ATOMIC).\n", dev->name, sksize); lp->stats.rx_dropped++; } else { skb->len = pkt_len; skb->dev = dev; obram_read(ioaddr, rbd.rbd_bufl, skb->data, pkt_len); if (wavelan_debug > 5) { int i; int maxi; printk("%s: pkt_len=%d, data=\"", dev->name, pkt_len); if ((maxi = pkt_len) > 16) maxi = 16; for (i = 0; i < maxi; i++) { unsigned char c; c = skb->data[i]; if (c >= ' ' && c <= '~') printk(" %c", skb->data[i]); else printk("%02x", skb->data[i]); } if (maxi < pkt_len) printk(".."); printk("\"\n\n"); } netif_rx(skb); lp->stats.rx_packets++; } } fd.fd_status = 0; obram_write(ioaddr, fdoff(lp->rx_head, fd_status), (unsigned char *)&fd.fd_status, sizeof(fd.fd_status)); fd.fd_command = FD_COMMAND_EL; obram_write(ioaddr, fdoff(lp->rx_head, fd_command), (unsigned char *)&fd.fd_command, sizeof(fd.fd_command)); fd.fd_command = 0; obram_write(ioaddr, fdoff(lp->rx_last, fd_command), (unsigned char *)&fd.fd_command, sizeof(fd.fd_command)); lp->rx_last = lp->rx_head; lp->rx_head = fd.fd_link_offset; } /* if (nreaped > 1) printk("r%d", nreaped); */ } /* * Command completion interrupt. * Reclaim as many freed tx buffers as we can. */ static int wavelan_complete(device *dev, unsigned short ioaddr, net_local *lp) { int nreaped; nreaped = 0; for (;;) { unsigned short tx_status; if (lp->tx_first_in_use == I82586NULL) break; obram_read(ioaddr, acoff(lp->tx_first_in_use, ac_status), (unsigned char *)&tx_status, sizeof(tx_status)); if ((tx_status & AC_SFLD_C) == 0) break; nreaped++; --lp->tx_n_in_use; /* if (lp->tx_n_in_use > 0) printk("%c", "0123456789abcdefghijk"[lp->tx_n_in_use]); */ if (lp->tx_n_in_use <= 0) lp->tx_first_in_use = I82586NULL; else { lp->tx_first_in_use += TXBLOCKZ; if (lp->tx_first_in_use >= OFFSET_CU + NTXBLOCKS * TXBLOCKZ) lp->tx_first_in_use -= NTXBLOCKS * TXBLOCKZ; } if (tx_status & AC_SFLD_OK) { int ncollisions; lp->stats.tx_packets++; ncollisions = tx_status & AC_SFLD_MAXCOL; lp->stats.collisions += ncollisions; /* if (ncollisions > 0) printk("%s: tx completed after %d collisions.\n", dev->name, ncollisions); */ } else { lp->stats.tx_errors++; if (tx_status & AC_SFLD_S10) { lp->stats.tx_carrier_errors++; if (wavelan_debug > 0) printk("%s: tx error: no CS.\n", dev->name); } if (tx_status & AC_SFLD_S9) { lp->stats.tx_carrier_errors++; printk("%s: tx error: lost CTS.\n", dev->name); } if (tx_status & AC_SFLD_S8) { lp->stats.tx_fifo_errors++; printk("%s: tx error: slow DMA.\n", dev->name); } if (tx_status & AC_SFLD_S6) { lp->stats.tx_heartbeat_errors++; if (wavelan_debug > 0) printk("%s: tx error: heart beat.\n", dev->name); } if (tx_status & AC_SFLD_S5) { lp->stats.tx_aborted_errors++; if (wavelan_debug > 0) printk("%s: tx error: too many collisions.\n", dev->name); } } if (wavelan_debug > 5) printk("%s: tx completed, tx_status 0x%04x.\n", dev->name, tx_status); } /* if (nreaped > 1) printk("c%d", nreaped); */ /* * Inform upper layers. */ if (lp->tx_n_in_use < NTXBLOCKS - 1) { dev->tbusy = 0; mark_bh(NET_BH); } return nreaped; } static void wavelan_watchdog(unsigned long a) { device *dev; net_local *lp; unsigned short ioaddr; unsigned long x; unsigned int nreaped; x = wavelan_splhi(); dev = (device *)a; ioaddr = dev->base_addr; lp = (net_local *)dev->priv; if (lp->tx_n_in_use <= 0) { wavelan_splx(x); return; } lp->watchdog.expires = WATCHDOG_JIFFIES; add_timer(&lp->watchdog); if (jiffies - dev->trans_start < WATCHDOG_JIFFIES) { wavelan_splx(x); return; } nreaped = wavelan_complete(dev, ioaddr, lp); printk("%s: warning: wavelan_watchdog(): %d reaped, %d remain.\n", dev->name, nreaped, lp->tx_n_in_use); /* wavelan_scb_show(ioaddr); wavelan_ru_show(dev); wavelan_cu_show(dev); wavelan_dev_show(dev); wavelan_local_show(dev); */ wavelan_splx(x); } static void wavelan_interrupt(int irq, struct pt_regs *regs) { device *dev; unsigned short ioaddr; net_local *lp; unsigned short hasr; unsigned short status; unsigned short ack_cmd; if ((dev = (device *)(irq2dev_map[irq])) == (device *)0) { printk("wavelan_interrupt(): irq %d for unknown device.\n", irq); return; } ioaddr = dev->base_addr; lp = (net_local *)dev->priv; dev->interrupt = 1; if ((hasr = hasr_read(ioaddr)) & HASR_MMC_INTR) { unsigned char dce_status; /* * Interrupt from the modem management controller. * This will clear it -- ignored for now. */ mmc_read(ioaddr, mmroff(0, mmr_dce_status), &dce_status, sizeof(dce_status)); if (wavelan_debug > 0) printk("%s: warning: wavelan_interrupt(): unexpected mmc interrupt: status 0x%04x.\n", dev->name, dce_status); } if ((hasr & HASR_82586_INTR) == 0) { dev->interrupt = 0; if (wavelan_debug > 0) printk("%s: warning: wavelan_interrupt() but (hasr & HASR_82586_INTR) == 0.\n", dev->name); return; } obram_read(ioaddr, scboff(OFFSET_SCB, scb_status), (unsigned char *)&status, sizeof(status)); /* * Acknowledge the interrupt(s). */ ack_cmd = status & SCB_ST_INT; obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&ack_cmd, sizeof(ack_cmd)); set_chan_attn(ioaddr, lp->hacr); if (wavelan_debug > 5) printk("%s: interrupt, status 0x%04x.\n", dev->name, status); if ((status & SCB_ST_CX) == SCB_ST_CX) { /* * Command completed. */ if (wavelan_debug > 5) printk("%s: command completed.\n", dev->name); (void)wavelan_complete(dev, ioaddr, lp); } if ((status & SCB_ST_FR) == SCB_ST_FR) { /* * Frame received. */ if (wavelan_debug > 5) printk("%s: received packet.\n", dev->name); wavelan_receive(dev); } if ( (status & SCB_ST_CNA) == SCB_ST_CNA || (((status & SCB_ST_CUS) != SCB_ST_CUS_ACTV) && dev->start) ) { printk("%s: warning: CU inactive -- restarting.\n", dev->name); (void)wavelan_hardware_reset(dev); } if ( (status & SCB_ST_RNR) == SCB_ST_RNR || (((status & SCB_ST_RUS) != SCB_ST_RUS_RDY) && dev->start) ) { printk("%s: warning: RU not ready -- restarting.\n", dev->name); (void)wavelan_hardware_reset(dev); } dev->interrupt = 0; } static int wavelan_close(device *dev) { unsigned short ioaddr; net_local *lp; unsigned short scb_cmd; if (wavelan_debug > 0) printk("%s: ->wavelan_close(dev=0x%x)\n", dev->name, (unsigned int)dev); ioaddr = dev->base_addr; lp = (net_local *)dev->priv; dev->tbusy = 1; dev->start = 0; /* * Flush the Tx and disable Rx. */ scb_cmd = (SCB_CMD_CUC & SCB_CMD_CUC_SUS) | (SCB_CMD_RUC & SCB_CMD_RUC_SUS); obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&scb_cmd, sizeof(scb_cmd)); set_chan_attn(ioaddr, lp->hacr); wavelan_ints_off(dev); free_irq(dev->irq); irq2dev_map[dev->irq] = (device *)0; /* * Release the ioport-region. */ release_region(ioaddr, sizeof(ha_t)); #if defined(MODULE) MOD_DEC_USE_COUNT; #endif /* defined(MODULE) */ if (wavelan_debug > 0) printk("%s: <-wavelan_close(): 0\n", dev->name); return 0; } /* * Get the current statistics. * This may be called with the card open or closed. */ static en_stats * wavelan_get_stats(device *dev) { net_local *lp; lp = (net_local *)dev->priv; return &lp->stats; } static void wavelan_set_multicast_list(device *dev, int num_addrs, void *addrs) { net_local *lp; unsigned long x; if (wavelan_debug > 0) printk("%s: ->wavelan_set_multicast_list(dev=0x%x, num_addrs=%d, addrs=0x%x)\n", dev->name, (unsigned int)dev, num_addrs, (unsigned int)addrs); lp = (net_local *)dev->priv; switch (num_addrs) { case -1: /* * Promiscuous mode: receive all packets. */ lp->promiscuous = 1; x = wavelan_splhi(); (void)wavelan_hardware_reset(dev); wavelan_splx(x); break; case 0: /* * Normal mode: disable promiscuous mode, * clear multicast list. */ lp->promiscuous = 0; x = wavelan_splhi(); (void)wavelan_hardware_reset(dev); wavelan_splx(x); break; default: /* * Multicast mode: receive normal and * multicast packets and do best-effort filtering. */ break; } if (wavelan_debug > 0) printk("%s: <-wavelan_set_multicast_list()\n", dev->name); } /* * Extra WaveLAN-specific device data. * "cat /proc/net/wavelan" -- see fs/proc/net.c. */ static int sprintf_stats(char *buffer, device *dev) { net_local *lp; unsigned char v; mmr_t m; lp = (net_local *)dev->priv; if (lp == (net_local *)0) return sprintf(buffer, "%6s: No statistics available.\n", dev->name); v = (unsigned char)1; mmc_write(dev->base_addr, mmwoff(0, mmw_freeze), &v, sizeof(v)); mmc_read(dev->base_addr, mmroff(0, mmr_dce_status), &m.mmr_dce_status, sizeof(m.mmr_dce_status)); mmc_read(dev->base_addr, mmroff(0, mmr_correct_nwid_h), &m.mmr_correct_nwid_h, sizeof(m.mmr_correct_nwid_h)); mmc_read(dev->base_addr, mmroff(0, mmr_correct_nwid_l), &m.mmr_correct_nwid_l, sizeof(m.mmr_correct_nwid_l)); mmc_read(dev->base_addr, mmroff(0, mmr_wrong_nwid_h), &m.mmr_wrong_nwid_h, sizeof(m.mmr_wrong_nwid_h)); mmc_read(dev->base_addr, mmroff(0, mmr_wrong_nwid_l), &m.mmr_wrong_nwid_l, sizeof(m.mmr_wrong_nwid_l)); mmc_read(dev->base_addr, mmroff(0, mmr_signal_lvl), &m.mmr_signal_lvl, sizeof(m.mmr_signal_lvl)); mmc_read(dev->base_addr, mmroff(0, mmr_silence_lvl), &m.mmr_silence_lvl, sizeof(m.mmr_silence_lvl)); mmc_read(dev->base_addr, mmroff(0, mmr_sgnl_qual), &m.mmr_sgnl_qual, sizeof(m.mmr_sgnl_qual)); v = (unsigned char)0; mmc_write(dev->base_addr, mmwoff(0, mmw_freeze), &v, sizeof(v)); lp->correct_nwid += (m.mmr_correct_nwid_h << 8) | m.mmr_correct_nwid_l; lp->wrong_nwid += (m.mmr_wrong_nwid_h << 8) | m.mmr_wrong_nwid_l; return sprintf ( buffer, "%6s: %02x %08x %08x %02x %02x %02x %02x %u\n", dev->name, m.mmr_dce_status, lp->correct_nwid, lp->wrong_nwid, m.mmr_signal_lvl, m.mmr_silence_lvl, m.mmr_sgnl_qual, lp->tx_n_in_use, lp->nresets ); } int wavelan_get_info(char *buffer, char **start, off_t offset, int length) { int len; off_t begin; off_t pos; int size; unsigned long x; len = 0; begin = 0; pos = 0; size = sprintf(buffer, "%s", "Iface | dce +nwid -nwid lvl slnc qual ntxq nrst\n"); pos += size; len += size; x = wavelan_splhi(); if (first_wavelan != (net_local *)0) { net_local *lp; lp = first_wavelan; do { size = sprintf_stats(buffer + len, lp->dev); len += size; pos = begin + len; if (pos < offset) { len = 0; begin = pos; } if (pos > offset + length) break; } while ((lp = lp->next) != first_wavelan); } wavelan_splx(x); *start = buffer + (offset - begin); /* Start of wanted data */ len -= (offset - begin); /* Start slop */ if (len > length) len = length; /* Ending slop */ return len; } #if defined(MODULE) char kernel_version[] = UTS_RELEASE; static struct device dev_wavelan = { " " /* "wavelan" */, 0, 0, 0, 0, 0, 0, 0, 0, 0, NULL, wavelan_probe }; int init_module(void) { if (register_netdev(&dev_wavelan) != 0) return -EIO; return 0; } void cleanup_module(void) { if (MOD_IN_USE) printk("wavelan: device busy, remove delayed\n"); else { unregister_netdev(&dev_wavelan); kfree_s(dev_wavelan.priv, sizeof(struct net_local)); dev_wavelan.priv = NULL; } } #endif /* defined(MODULE) */ static void wavelan_cu_show_one(device *dev, net_local *lp, int i, unsigned short p) { unsigned short ioaddr; ac_tx_t actx; ioaddr = dev->base_addr; printk("%d: 0x%x:", i, p); obram_read(ioaddr, p, (unsigned char *)&actx, sizeof(actx)); printk(" status=0x%x,", actx.tx_h.ac_status); printk(" command=0x%x,", actx.tx_h.ac_command); /* { tbd_t tbd; obram_read(ioaddr, actx.tx_tbd_offset, (unsigned char *)&tbd, sizeof(tbd)); printk(" tbd_status=0x%x,", tbd.tbd_status); } */ printk("|"); } #if 0 static void wavelan_psa_show(psa_t *p) { printk("psa:"); printk("psa_io_base_addr_1: 0x%02x,", p->psa_io_base_addr_1); printk("psa_io_base_addr_2: 0x%02x,", p->psa_io_base_addr_2); printk("psa_io_base_addr_3: 0x%02x,", p->psa_io_base_addr_3); printk("psa_io_base_addr_4: 0x%02x,", p->psa_io_base_addr_4); printk("psa_rem_boot_addr_1: 0x%02x,", p->psa_rem_boot_addr_1); printk("psa_rem_boot_addr_2: 0x%02x,", p->psa_rem_boot_addr_2); printk("psa_rem_boot_addr_3: 0x%02x,", p->psa_rem_boot_addr_3); printk("psa_holi_params: 0x%02x,", p->psa_holi_params); printk("psa_int_req_no: %d,", p->psa_int_req_no); printk ( "psa_univ_mac_addr[]: %02x:%02x:%02x:%02x:%02x:%02x,", p->psa_univ_mac_addr[0], p->psa_univ_mac_addr[1], p->psa_univ_mac_addr[2], p->psa_univ_mac_addr[3], p->psa_univ_mac_addr[4], p->psa_univ_mac_addr[5] ); printk ( "psa_local_mac_addr[]: %02x:%02x:%02x:%02x:%02x:%02x,", p->psa_local_mac_addr[0], p->psa_local_mac_addr[1], p->psa_local_mac_addr[2], p->psa_local_mac_addr[3], p->psa_local_mac_addr[4], p->psa_local_mac_addr[5] ); printk("psa_univ_local_sel: %d,", p->psa_univ_local_sel); printk("psa_comp_number: %d,", p->psa_comp_number); printk("psa_thr_pre_set: 0x%02x,", p->psa_thr_pre_set); printk("psa_feature_select/decay_prm: 0x%02x,", p->psa_feature_select); printk("psa_subband/decay_update_prm: %d,", p->psa_subband); printk("psa_quality_thr: 0x%02x,", p->psa_quality_thr); printk("psa_mod_delay: 0x%02x,", p->psa_mod_delay); printk("psa_nwid: 0x%02x%02x,", p->psa_nwid[0], p->psa_nwid[1]); printk("psa_undefined: %d,", p->psa_undefined); printk("psa_encryption_select: %d,", p->psa_encryption_select); printk ( "psa_encryption_key[]: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x,", p->psa_encryption_key[0], p->psa_encryption_key[1], p->psa_encryption_key[2], p->psa_encryption_key[3], p->psa_encryption_key[4], p->psa_encryption_key[5], p->psa_encryption_key[6], p->psa_encryption_key[7] ); printk("psa_databus_width: %d,", p->psa_databus_width); printk("psa_call_code/auto_squelch: 0x%02x,", p->psa_call_code); printk("psa_no_of_retries: %d,", p->psa_no_of_retries); printk("psa_acr: %d,", p->psa_acr); printk("psa_dump_count: %d,", p->psa_dump_count); printk("psa_nwid_prefix: 0x%02x,", p->psa_nwid_prefix); printk("psa_conf_status: %d,", p->psa_conf_status); printk("psa_crc: 0x%02x%02x,", p->psa_crc[0], p->psa_crc[1]); printk("psa_crc_status: 0x%02x,", p->psa_crc_status); printk("\n"); } static void wavelan_mmc_show(unsigned short ioaddr) { mmr_t m; mmc_read(ioaddr, 0, (unsigned char *)&m, sizeof(m)); printk("mmr:"); printk(" des_status: 0x%x", m.mmr_des_status); printk(" des_avail: 0x%x", m.mmr_des_avail); printk(" des_io_invert: 0x%x", m.mmr_des_io_invert); printk ( " dce_status: 0x%x[%s%s%s%s]", m.mmr_dce_status & 0x0F, (m.mmr_dce_status & MMR_DCE_STATUS_ENERG_DET) ? "energy detected," : "", (m.mmr_dce_status & MMR_DCE_STATUS_LOOPT_IND) ? "loop test indicated," : "", (m.mmr_dce_status & MMR_DCE_STATUS_XMTITR_IND) ? "transmitter on," : "", (m.mmr_dce_status & MMR_DCE_STATUS_JBR_EXPIRED) ? "jabber timer expired," : "" ); printk(" correct_nwid: %d", m.mmr_correct_nwid_h << 8 | m.mmr_correct_nwid_l); printk(" wrong_nwid: %d", (m.mmr_wrong_nwid_h << 8) | m.mmr_wrong_nwid_l); printk(" thr_pre_set: 0x%x", m.mmr_thr_pre_set); printk(" signal_lvl: %d", m.mmr_signal_lvl); printk(" silence_lvl: %d", m.mmr_silence_lvl); printk(" sgnl_qual: 0x%x", m.mmr_sgnl_qual); printk(" netw_id_l: %x", m.mmr_netw_id_l); printk("\n"); } #endif /* 0 */ static void wavelan_scb_show(unsigned short ioaddr) { scb_t scb; obram_read(ioaddr, OFFSET_SCB, (unsigned char *)&scb, sizeof(scb)); printk("scb:"); printk(" status:"); printk ( " stat 0x%x[%s%s%s%s]", (scb.scb_status & (SCB_ST_CX | SCB_ST_FR | SCB_ST_CNA | SCB_ST_RNR)) >> 12, (scb.scb_status & SCB_ST_CX) ? "cmd completion interrupt," : "", (scb.scb_status & SCB_ST_FR) ? "frame received," : "", (scb.scb_status & SCB_ST_CNA) ? "cmd unit not active," : "", (scb.scb_status & SCB_ST_RNR) ? "rcv unit not ready," : "" ); printk ( " cus 0x%x[%s%s%s]", (scb.scb_status & SCB_ST_CUS) >> 8, ((scb.scb_status & SCB_ST_CUS) == SCB_ST_CUS_IDLE) ? "idle" : "", ((scb.scb_status & SCB_ST_CUS) == SCB_ST_CUS_SUSP) ? "suspended" : "", ((scb.scb_status & SCB_ST_CUS) == SCB_ST_CUS_ACTV) ? "active" : "" ); printk ( " rus 0x%x[%s%s%s%s]", (scb.scb_status & SCB_ST_RUS) >> 4, ((scb.scb_status & SCB_ST_RUS) == SCB_ST_RUS_IDLE) ? "idle" : "", ((scb.scb_status & SCB_ST_RUS) == SCB_ST_RUS_SUSP) ? "suspended" : "", ((scb.scb_status & SCB_ST_RUS) == SCB_ST_RUS_NRES) ? "no resources" : "", ((scb.scb_status & SCB_ST_RUS) == SCB_ST_RUS_RDY) ? "ready" : "" ); printk(" command:"); printk ( " ack 0x%x[%s%s%s%s]", (scb.scb_command & (SCB_CMD_ACK_CX | SCB_CMD_ACK_FR | SCB_CMD_ACK_CNA | SCB_CMD_ACK_RNR)) >> 12, (scb.scb_command & SCB_CMD_ACK_CX) ? "ack cmd completion," : "", (scb.scb_command & SCB_CMD_ACK_FR) ? "ack frame received," : "", (scb.scb_command & SCB_CMD_ACK_CNA) ? "ack CU not active," : "", (scb.scb_command & SCB_CMD_ACK_RNR) ? "ack RU not ready," : "" ); printk ( " cuc 0x%x[%s%s%s%s%s]", (scb.scb_command & SCB_CMD_CUC) >> 8, ((scb.scb_command & SCB_CMD_CUC) == SCB_CMD_CUC_NOP) ? "nop" : "", ((scb.scb_command & SCB_CMD_CUC) == SCB_CMD_CUC_GO) ? "start cbl_offset" : "", ((scb.scb_command & SCB_CMD_CUC) == SCB_CMD_CUC_RES) ? "resume execution" : "", ((scb.scb_command & SCB_CMD_CUC) == SCB_CMD_CUC_SUS) ? "suspend execution" : "", ((scb.scb_command & SCB_CMD_CUC) == SCB_CMD_CUC_ABT) ? "abort execution" : "" ); printk ( " ruc 0x%x[%s%s%s%s%s]", (scb.scb_command & SCB_CMD_RUC) >> 4, ((scb.scb_command & SCB_CMD_RUC) == SCB_CMD_RUC_NOP) ? "nop" : "", ((scb.scb_command & SCB_CMD_RUC) == SCB_CMD_RUC_GO) ? "start rfa_offset" : "", ((scb.scb_command & SCB_CMD_RUC) == SCB_CMD_RUC_RES) ? "resume reception" : "", ((scb.scb_command & SCB_CMD_RUC) == SCB_CMD_RUC_SUS) ? "suspend reception" : "", ((scb.scb_command & SCB_CMD_RUC) == SCB_CMD_RUC_ABT) ? "abort reception" : "" ); printk(" cbl_offset 0x%x", scb.scb_cbl_offset); printk(" rfa_offset 0x%x", scb.scb_rfa_offset); printk(" crcerrs %d", scb.scb_crcerrs); printk(" alnerrs %d", scb.scb_alnerrs); printk(" rscerrs %d", scb.scb_rscerrs); printk(" ovrnerrs %d", scb.scb_ovrnerrs); printk("\n"); } static void wavelan_ru_show(device *dev) { net_local *lp; lp = (net_local *)dev->priv; printk("ru:"); /* * Not implemented yet... */ printk("\n"); } static void wavelan_cu_show(device *dev) { net_local *lp; unsigned int i; unsigned short p; lp = (net_local *)dev->priv; printk("cu:"); printk("\n"); for (i = 0, p = lp->tx_first_in_use; i < NTXBLOCKS; i++) { wavelan_cu_show_one(dev, lp, i, p); p += TXBLOCKZ; if (p >= OFFSET_CU + NTXBLOCKS * TXBLOCKZ) p -= NTXBLOCKS * TXBLOCKZ; } } static void wavelan_dev_show(device *dev) { printk("dev:"); printk(" start=%d,", dev->start); printk(" tbusy=%d,", dev->tbusy); printk(" interrupt=%d,", dev->interrupt); printk(" trans_start=%ld,", dev->trans_start); printk(" flags=0x%x,", dev->flags); printk("\n"); } static void wavelan_local_show(device *dev) { net_local *lp; lp = (net_local *)dev->priv; printk("local:"); printk(" tx_n_in_use=%d,", lp->tx_n_in_use); printk(" hacr=0x%x,", lp->hacr); printk(" rx_head=0x%x,", lp->rx_head); printk(" rx_last=0x%x,", lp->rx_last); printk(" tx_first_free=0x%x,", lp->tx_first_free); printk(" tx_first_in_use=0x%x,", lp->tx_first_in_use); printk("\n"); } /* * This software may only be used and distributed * according to the terms of the GNU Public License. * * This software was developed as a component of the * Linux operating system. * It is based on other device drivers and information * either written or supplied by: * Ajay Bakre (bakre@paul.rutgers.edu), * Donald Becker (becker@cesdis.gsfc.nasa.gov), * Loeke Brederveld (Loeke.Brederveld@Utrecht.NCR.com), * Anders Klemets (klemets@it.kth.se), * Vladimir V. Kolpakov (w@stier.koenig.ru), * Marc Meertens (Marc.Meertens@Utrecht.NCR.com), * Pauline Middelink (middelin@polyware.iaf.nl), * Robert Morris (rtm@das.harvard.edu), * Girish Welling (welling@paul.rutgers.edu), * * Thanks go also to: * James Ashton (jaa101@syseng.anu.edu.au), * Alan Cox (iialan@iiit.swan.ac.uk), * Allan Creighton (allanc@cs.usyd.edu.au), * Matthew Geier (matthew@cs.usyd.edu.au), * Remo di Giovanni (remo@cs.usyd.edu.au), * Eckhard Grah (grah@wrcs1.urz.uni-wuppertal.de), * Vipul Gupta (vgupta@cs.binghamton.edu), * Mark Hagan (mhagan@wtcpost.daytonoh.NCR.COM), * Tim Nicholson (tim@cs.usyd.edu.au), * Ian Parkin (ian@cs.usyd.edu.au), * John Rosenberg (johnr@cs.usyd.edu.au), * George Rossi (george@phm.gov.au), * Arthur Scott (arthur@cs.usyd.edu.au), * Peter Storey, * for their assistance and advice. * * Please send bug reports, updates, comments to: * * Bruce Janson Email: bruce@cs.usyd.edu.au * Basser Department of Computer Science Phone: +61-2-351-3423 * University of Sydney, N.S.W., 2006, AUSTRALIA Fax: +61-2-351-3838 */ #endif /* defined(CONFIG_WAVELAN) */