/* $Id: lmc_media.c,v 1.13 2000/04/11 05:25:26 asj Exp $ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* Processor type for cache alignment. */ #include #include #include #include "lmc.h" #include "lmc_var.h" #include "lmc_ioctl.h" #include "lmc_debug.h" #define CONFIG_LMC_IGNORE_HARDWARE_HANDSHAKE 1 /* * Copyright (c) 1997-2000 LAN Media Corporation (LMC) * All rights reserved. www.lanmedia.com * * This code is written by: * Andrew Stanley-Jones (asj@cban.com) * Rob Braun (bbraun@vix.com), * Michael Graff (explorer@vix.com) and * Matt Thomas (matt@3am-software.com). * * This software may be used and distributed according to the terms * of the GNU General Public License version 2, incorporated herein by reference. */ /* * protocol independent method. */ static void lmc_set_protocol (lmc_softc_t * const, lmc_ctl_t *); /* * media independent methods to check on media status, link, light LEDs, * etc. */ static void lmc_ds3_init (lmc_softc_t * const); static void lmc_ds3_default (lmc_softc_t * const); static void lmc_ds3_set_status (lmc_softc_t * const, lmc_ctl_t *); static void lmc_ds3_set_100ft (lmc_softc_t * const, int); static int lmc_ds3_get_link_status (lmc_softc_t * const); static void lmc_ds3_set_crc_length (lmc_softc_t * const, int); static void lmc_ds3_set_scram (lmc_softc_t * const, int); static void lmc_ds3_watchdog (lmc_softc_t * const); static void lmc_hssi_init (lmc_softc_t * const); static void lmc_hssi_default (lmc_softc_t * const); static void lmc_hssi_set_status (lmc_softc_t * const, lmc_ctl_t *); static void lmc_hssi_set_clock (lmc_softc_t * const, int); static int lmc_hssi_get_link_status (lmc_softc_t * const); static void lmc_hssi_set_link_status (lmc_softc_t * const, int); static void lmc_hssi_set_crc_length (lmc_softc_t * const, int); static void lmc_hssi_watchdog (lmc_softc_t * const); static void lmc_ssi_init (lmc_softc_t * const); static void lmc_ssi_default (lmc_softc_t * const); static void lmc_ssi_set_status (lmc_softc_t * const, lmc_ctl_t *); static void lmc_ssi_set_clock (lmc_softc_t * const, int); static void lmc_ssi_set_speed (lmc_softc_t * const, lmc_ctl_t *); static int lmc_ssi_get_link_status (lmc_softc_t * const); static void lmc_ssi_set_link_status (lmc_softc_t * const, int); static void lmc_ssi_set_crc_length (lmc_softc_t * const, int); static void lmc_ssi_watchdog (lmc_softc_t * const); static void lmc_t1_init (lmc_softc_t * const); static void lmc_t1_default (lmc_softc_t * const); static void lmc_t1_set_status (lmc_softc_t * const, lmc_ctl_t *); static int lmc_t1_get_link_status (lmc_softc_t * const); static void lmc_t1_set_circuit_type (lmc_softc_t * const, int); static void lmc_t1_set_crc_length (lmc_softc_t * const, int); static void lmc_t1_set_clock (lmc_softc_t * const, int); static void lmc_t1_watchdog (lmc_softc_t * const); static void lmc_dummy_set_1 (lmc_softc_t * const, int); static void lmc_dummy_set2_1 (lmc_softc_t * const, lmc_ctl_t *); static inline void write_av9110_bit (lmc_softc_t *, int); static void write_av9110 (lmc_softc_t *, u_int32_t, u_int32_t, u_int32_t, u_int32_t, u_int32_t); lmc_media_t lmc_ds3_media = { lmc_ds3_init, /* special media init stuff */ lmc_ds3_default, /* reset to default state */ lmc_ds3_set_status, /* reset status to state provided */ lmc_dummy_set_1, /* set clock source */ lmc_dummy_set2_1, /* set line speed */ lmc_ds3_set_100ft, /* set cable length */ lmc_ds3_set_scram, /* set scrambler */ lmc_ds3_get_link_status, /* get link status */ lmc_dummy_set_1, /* set link status */ lmc_ds3_set_crc_length, /* set CRC length */ lmc_dummy_set_1, /* set T1 or E1 circuit type */ lmc_ds3_watchdog }; lmc_media_t lmc_hssi_media = { lmc_hssi_init, /* special media init stuff */ lmc_hssi_default, /* reset to default state */ lmc_hssi_set_status, /* reset status to state provided */ lmc_hssi_set_clock, /* set clock source */ lmc_dummy_set2_1, /* set line speed */ lmc_dummy_set_1, /* set cable length */ lmc_dummy_set_1, /* set scrambler */ lmc_hssi_get_link_status, /* get link status */ lmc_hssi_set_link_status, /* set link status */ lmc_hssi_set_crc_length, /* set CRC length */ lmc_dummy_set_1, /* set T1 or E1 circuit type */ lmc_hssi_watchdog }; lmc_media_t lmc_ssi_media = { lmc_ssi_init, /* special media init stuff */ lmc_ssi_default, /* reset to default state */ lmc_ssi_set_status, /* reset status to state provided */ lmc_ssi_set_clock, /* set clock source */ lmc_ssi_set_speed, /* set line speed */ lmc_dummy_set_1, /* set cable length */ lmc_dummy_set_1, /* set scrambler */ lmc_ssi_get_link_status, /* get link status */ lmc_ssi_set_link_status, /* set link status */ lmc_ssi_set_crc_length, /* set CRC length */ lmc_dummy_set_1, /* set T1 or E1 circuit type */ lmc_ssi_watchdog }; lmc_media_t lmc_t1_media = { lmc_t1_init, /* special media init stuff */ lmc_t1_default, /* reset to default state */ lmc_t1_set_status, /* reset status to state provided */ lmc_t1_set_clock, /* set clock source */ lmc_dummy_set2_1, /* set line speed */ lmc_dummy_set_1, /* set cable length */ lmc_dummy_set_1, /* set scrambler */ lmc_t1_get_link_status, /* get link status */ lmc_dummy_set_1, /* set link status */ lmc_t1_set_crc_length, /* set CRC length */ lmc_t1_set_circuit_type, /* set T1 or E1 circuit type */ lmc_t1_watchdog }; static void lmc_dummy_set_1 (lmc_softc_t * const sc, int a) { } static void lmc_dummy_set2_1 (lmc_softc_t * const sc, lmc_ctl_t * a) { } /* * HSSI methods */ static void lmc_hssi_init (lmc_softc_t * const sc) { sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC5200; lmc_gpio_mkoutput (sc, LMC_GEP_HSSI_CLOCK); } static void lmc_hssi_default (lmc_softc_t * const sc) { sc->lmc_miireg16 = LMC_MII16_LED_ALL; sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN); sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT); sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16); } /* * Given a user provided state, set ourselves up to match it. This will * always reset the card if needed. */ static void lmc_hssi_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl) { if (ctl == NULL) { sc->lmc_media->set_clock_source (sc, sc->ictl.clock_source); lmc_set_protocol (sc, NULL); return; } /* * check for change in clock source */ if (ctl->clock_source && !sc->ictl.clock_source) { sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_INT); sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_INT; } else if (!ctl->clock_source && sc->ictl.clock_source) { sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_EXT; sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT); } lmc_set_protocol (sc, ctl); } /* * 1 == internal, 0 == external */ static void lmc_hssi_set_clock (lmc_softc_t * const sc, int ie) { int old; old = sc->ictl.clock_source; if (ie == LMC_CTL_CLOCK_SOURCE_EXT) { sc->lmc_gpio |= LMC_GEP_HSSI_CLOCK; LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT; if(old != ie) printk (LMC_PRINTF_FMT ": clock external\n", LMC_PRINTF_ARGS); } else { sc->lmc_gpio &= ~(LMC_GEP_HSSI_CLOCK); LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT; if(old != ie) printk (LMC_PRINTF_FMT ": clock internal\n", LMC_PRINTF_ARGS); } } /* * return hardware link status. * 0 == link is down, 1 == link is up. */ static int lmc_hssi_get_link_status (lmc_softc_t * const sc) { /* * We're using the same code as SSI since * they're practically the same */ return lmc_ssi_get_link_status(sc); } static void lmc_hssi_set_link_status (lmc_softc_t * const sc, int state) { if (state == LMC_LINK_UP) sc->lmc_miireg16 |= LMC_MII16_HSSI_TA; else sc->lmc_miireg16 &= ~LMC_MII16_HSSI_TA; lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); } /* * 0 == 16bit, 1 == 32bit */ static void lmc_hssi_set_crc_length (lmc_softc_t * const sc, int state) { if (state == LMC_CTL_CRC_LENGTH_32) { /* 32 bit */ sc->lmc_miireg16 |= LMC_MII16_HSSI_CRC; sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32; } else { /* 16 bit */ sc->lmc_miireg16 &= ~LMC_MII16_HSSI_CRC; sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16; } lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); } static void lmc_hssi_watchdog (lmc_softc_t * const sc) { /* HSSI is blank */ } /* * DS3 methods */ /* * Set cable length */ static void lmc_ds3_set_100ft (lmc_softc_t * const sc, int ie) { if (ie == LMC_CTL_CABLE_LENGTH_GT_100FT) { sc->lmc_miireg16 &= ~LMC_MII16_DS3_ZERO; sc->ictl.cable_length = LMC_CTL_CABLE_LENGTH_GT_100FT; } else if (ie == LMC_CTL_CABLE_LENGTH_LT_100FT) { sc->lmc_miireg16 |= LMC_MII16_DS3_ZERO; sc->ictl.cable_length = LMC_CTL_CABLE_LENGTH_LT_100FT; } lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); } static void lmc_ds3_default (lmc_softc_t * const sc) { sc->lmc_miireg16 = LMC_MII16_LED_ALL; sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN); sc->lmc_media->set_cable_length (sc, LMC_CTL_CABLE_LENGTH_LT_100FT); sc->lmc_media->set_scrambler (sc, LMC_CTL_OFF); sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16); } /* * Given a user provided state, set ourselves up to match it. This will * always reset the card if needed. */ static void lmc_ds3_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl) { if (ctl == NULL) { sc->lmc_media->set_cable_length (sc, sc->ictl.cable_length); sc->lmc_media->set_scrambler (sc, sc->ictl.scrambler_onoff); lmc_set_protocol (sc, NULL); return; } /* * check for change in cable length setting */ if (ctl->cable_length && !sc->ictl.cable_length) lmc_ds3_set_100ft (sc, LMC_CTL_CABLE_LENGTH_GT_100FT); else if (!ctl->cable_length && sc->ictl.cable_length) lmc_ds3_set_100ft (sc, LMC_CTL_CABLE_LENGTH_LT_100FT); /* * Check for change in scrambler setting (requires reset) */ if (ctl->scrambler_onoff && !sc->ictl.scrambler_onoff) lmc_ds3_set_scram (sc, LMC_CTL_ON); else if (!ctl->scrambler_onoff && sc->ictl.scrambler_onoff) lmc_ds3_set_scram (sc, LMC_CTL_OFF); lmc_set_protocol (sc, ctl); } static void lmc_ds3_init (lmc_softc_t * const sc) { int i; sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC5245; /* writes zeros everywhere */ for (i = 0; i < 21; i++) { lmc_mii_writereg (sc, 0, 17, i); lmc_mii_writereg (sc, 0, 18, 0); } /* set some essential bits */ lmc_mii_writereg (sc, 0, 17, 1); lmc_mii_writereg (sc, 0, 18, 0x25); /* ser, xtx */ lmc_mii_writereg (sc, 0, 17, 5); lmc_mii_writereg (sc, 0, 18, 0x80); /* emode */ lmc_mii_writereg (sc, 0, 17, 14); lmc_mii_writereg (sc, 0, 18, 0x30); /* rcgen, tcgen */ /* clear counters and latched bits */ for (i = 0; i < 21; i++) { lmc_mii_writereg (sc, 0, 17, i); lmc_mii_readreg (sc, 0, 18); } } /* * 1 == DS3 payload scrambled, 0 == not scrambled */ static void lmc_ds3_set_scram (lmc_softc_t * const sc, int ie) { if (ie == LMC_CTL_ON) { sc->lmc_miireg16 |= LMC_MII16_DS3_SCRAM; sc->ictl.scrambler_onoff = LMC_CTL_ON; } else { sc->lmc_miireg16 &= ~LMC_MII16_DS3_SCRAM; sc->ictl.scrambler_onoff = LMC_CTL_OFF; } lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); } /* * return hardware link status. * 0 == link is down, 1 == link is up. */ static int lmc_ds3_get_link_status (lmc_softc_t * const sc) { u16 link_status, link_status_11; int ret = 1; lmc_mii_writereg (sc, 0, 17, 7); link_status = lmc_mii_readreg (sc, 0, 18); /* LMC5245 (DS3) & LMC1200 (DS1) LED definitions * led0 yellow = far-end adapter is in Red alarm condition * led1 blue = received an Alarm Indication signal * (upstream failure) * led2 Green = power to adapter, Gate Array loaded & driver * attached * led3 red = Loss of Signal (LOS) or out of frame (OOF) * conditions detected on T3 receive signal */ lmc_led_on(sc, LMC_DS3_LED2); if ((link_status & LMC_FRAMER_REG0_DLOS) || (link_status & LMC_FRAMER_REG0_OOFS)){ ret = 0; if(sc->last_led_err[3] != 1){ u16 r1; lmc_mii_writereg (sc, 0, 17, 01); /* Turn on Xbit error as our cisco does */ r1 = lmc_mii_readreg (sc, 0, 18); r1 &= 0xfe; lmc_mii_writereg(sc, 0, 18, r1); printk(KERN_WARNING "%s: Red Alarm - Loss of Signal or Loss of Framing\n", sc->name); } lmc_led_on(sc, LMC_DS3_LED3); /* turn on red LED */ sc->last_led_err[3] = 1; } else { lmc_led_off(sc, LMC_DS3_LED3); /* turn on red LED */ if(sc->last_led_err[3] == 1){ u16 r1; lmc_mii_writereg (sc, 0, 17, 01); /* Turn off Xbit error */ r1 = lmc_mii_readreg (sc, 0, 18); r1 |= 0x01; lmc_mii_writereg(sc, 0, 18, r1); } sc->last_led_err[3] = 0; } lmc_mii_writereg(sc, 0, 17, 0x10); link_status_11 = lmc_mii_readreg(sc, 0, 18); if((link_status & LMC_FRAMER_REG0_AIS) || (link_status_11 & LMC_FRAMER_REG10_XBIT)) { ret = 0; if(sc->last_led_err[0] != 1){ printk(KERN_WARNING "%s: AIS Alarm or XBit Error\n", sc->name); printk(KERN_WARNING "%s: Remote end has loss of signal or framing\n", sc->name); } lmc_led_on(sc, LMC_DS3_LED0); sc->last_led_err[0] = 1; } else { lmc_led_off(sc, LMC_DS3_LED0); sc->last_led_err[0] = 0; } lmc_mii_writereg (sc, 0, 17, 9); link_status = lmc_mii_readreg (sc, 0, 18); if(link_status & LMC_FRAMER_REG9_RBLUE){ ret = 0; if(sc->last_led_err[1] != 1){ printk(KERN_WARNING "%s: Blue Alarm - Receiving all 1's\n", sc->name); } lmc_led_on(sc, LMC_DS3_LED1); sc->last_led_err[1] = 1; } else { lmc_led_off(sc, LMC_DS3_LED1); sc->last_led_err[1] = 0; } return ret; } /* * 0 == 16bit, 1 == 32bit */ static void lmc_ds3_set_crc_length (lmc_softc_t * const sc, int state) { if (state == LMC_CTL_CRC_LENGTH_32) { /* 32 bit */ sc->lmc_miireg16 |= LMC_MII16_DS3_CRC; sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32; } else { /* 16 bit */ sc->lmc_miireg16 &= ~LMC_MII16_DS3_CRC; sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16; } lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); } static void lmc_ds3_watchdog (lmc_softc_t * const sc) { } /* * SSI methods */ static void lmc_ssi_init(lmc_softc_t * const sc) { u16 mii17; int cable; sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC1000; mii17 = lmc_mii_readreg(sc, 0, 17); cable = (mii17 & LMC_MII17_SSI_CABLE_MASK) >> LMC_MII17_SSI_CABLE_SHIFT; sc->ictl.cable_type = cable; lmc_gpio_mkoutput(sc, LMC_GEP_SSI_TXCLOCK); } static void lmc_ssi_default (lmc_softc_t * const sc) { sc->lmc_miireg16 = LMC_MII16_LED_ALL; /* * make TXCLOCK always be an output */ lmc_gpio_mkoutput (sc, LMC_GEP_SSI_TXCLOCK); sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN); sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT); sc->lmc_media->set_speed (sc, NULL); sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16); } /* * Given a user provided state, set ourselves up to match it. This will * always reset the card if needed. */ static void lmc_ssi_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl) { if (ctl == NULL) { sc->lmc_media->set_clock_source (sc, sc->ictl.clock_source); sc->lmc_media->set_speed (sc, &sc->ictl); lmc_set_protocol (sc, NULL); return; } /* * check for change in clock source */ if (ctl->clock_source == LMC_CTL_CLOCK_SOURCE_INT && sc->ictl.clock_source == LMC_CTL_CLOCK_SOURCE_EXT) { sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_INT); sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_INT; } else if (ctl->clock_source == LMC_CTL_CLOCK_SOURCE_EXT && sc->ictl.clock_source == LMC_CTL_CLOCK_SOURCE_INT) { sc->lmc_media->set_clock_source (sc, LMC_CTL_CLOCK_SOURCE_EXT); sc->lmc_timing = LMC_CTL_CLOCK_SOURCE_EXT; } if (ctl->clock_rate != sc->ictl.clock_rate) sc->lmc_media->set_speed (sc, ctl); lmc_set_protocol (sc, ctl); } /* * 1 == internal, 0 == external */ static void lmc_ssi_set_clock (lmc_softc_t * const sc, int ie) { int old; old = ie; if (ie == LMC_CTL_CLOCK_SOURCE_EXT) { sc->lmc_gpio &= ~(LMC_GEP_SSI_TXCLOCK); LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT; if(ie != old) printk (LMC_PRINTF_FMT ": clock external\n", LMC_PRINTF_ARGS); } else { sc->lmc_gpio |= LMC_GEP_SSI_TXCLOCK; LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT; if(ie != old) printk (LMC_PRINTF_FMT ": clock internal\n", LMC_PRINTF_ARGS); } } static void lmc_ssi_set_speed (lmc_softc_t * const sc, lmc_ctl_t * ctl) { lmc_ctl_t *ictl = &sc->ictl; lmc_av9110_t *av; /* original settings for clock rate of: * 100 Khz (8,25,0,0,2) were incorrect * they should have been 80,125,1,3,3 * There are 17 param combinations to produce this freq. * For 1.5 Mhz use 120,100,1,1,2 (226 param. combinations) */ if (ctl == NULL) { av = &ictl->cardspec.ssi; ictl->clock_rate = 1500000; av->f = ictl->clock_rate; av->n = 120; av->m = 100; av->v = 1; av->x = 1; av->r = 2; write_av9110 (sc, av->n, av->m, av->v, av->x, av->r); return; } av = &ctl->cardspec.ssi; if (av->f == 0) return; ictl->clock_rate = av->f; /* really, this is the rate we are */ ictl->cardspec.ssi = *av; write_av9110 (sc, av->n, av->m, av->v, av->x, av->r); } /* * return hardware link status. * 0 == link is down, 1 == link is up. */ static int lmc_ssi_get_link_status (lmc_softc_t * const sc) { u16 link_status; u_int32_t ticks; int ret = 1; int hw_hdsk = 1; /* * missing CTS? Hmm. If we require CTS on, we may never get the * link to come up, so omit it in this test. * * Also, it seems that with a loopback cable, DCD isn't asserted, * so just check for things like this: * DSR _must_ be asserted. * One of DCD or CTS must be asserted. */ /* LMC 1000 (SSI) LED definitions * led0 Green = power to adapter, Gate Array loaded & * driver attached * led1 Green = DSR and DTR and RTS and CTS are set * led2 Green = Cable detected * led3 red = No timing is available from the * cable or the on-board frequency * generator. */ link_status = lmc_mii_readreg (sc, 0, 16); /* Is the transmit clock still available */ ticks = LMC_CSR_READ (sc, csr_gp_timer); ticks = 0x0000ffff - (ticks & 0x0000ffff); lmc_led_on (sc, LMC_MII16_LED0); /* ====== transmit clock determination ===== */ if (sc->lmc_timing == LMC_CTL_CLOCK_SOURCE_INT) { lmc_led_off(sc, LMC_MII16_LED3); } else if (ticks == 0 ) { /* no clock found ? */ ret = 0; if (sc->last_led_err[3] != 1) { sc->extra_stats.tx_lossOfClockCnt++; printk(KERN_WARNING "%s: Lost Clock, Link Down\n", sc->name); } sc->last_led_err[3] = 1; lmc_led_on (sc, LMC_MII16_LED3); /* turn ON red LED */ } else { if(sc->last_led_err[3] == 1) printk(KERN_WARNING "%s: Clock Returned\n", sc->name); sc->last_led_err[3] = 0; lmc_led_off (sc, LMC_MII16_LED3); /* turn OFF red LED */ } if ((link_status & LMC_MII16_SSI_DSR) == 0) { /* Also HSSI CA */ ret = 0; hw_hdsk = 0; } #ifdef CONFIG_LMC_IGNORE_HARDWARE_HANDSHAKE if ((link_status & (LMC_MII16_SSI_CTS | LMC_MII16_SSI_DCD)) == 0){ ret = 0; hw_hdsk = 0; } #endif if(hw_hdsk == 0){ if(sc->last_led_err[1] != 1) printk(KERN_WARNING "%s: DSR not asserted\n", sc->name); sc->last_led_err[1] = 1; lmc_led_off(sc, LMC_MII16_LED1); } else { if(sc->last_led_err[1] != 0) printk(KERN_WARNING "%s: DSR now asserted\n", sc->name); sc->last_led_err[1] = 0; lmc_led_on(sc, LMC_MII16_LED1); } if(ret == 1) { lmc_led_on(sc, LMC_MII16_LED2); /* Over all good status? */ } return ret; } static void lmc_ssi_set_link_status (lmc_softc_t * const sc, int state) { if (state == LMC_LINK_UP) { sc->lmc_miireg16 |= (LMC_MII16_SSI_DTR | LMC_MII16_SSI_RTS); printk (LMC_PRINTF_FMT ": asserting DTR and RTS\n", LMC_PRINTF_ARGS); } else { sc->lmc_miireg16 &= ~(LMC_MII16_SSI_DTR | LMC_MII16_SSI_RTS); printk (LMC_PRINTF_FMT ": deasserting DTR and RTS\n", LMC_PRINTF_ARGS); } lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); } /* * 0 == 16bit, 1 == 32bit */ static void lmc_ssi_set_crc_length (lmc_softc_t * const sc, int state) { if (state == LMC_CTL_CRC_LENGTH_32) { /* 32 bit */ sc->lmc_miireg16 |= LMC_MII16_SSI_CRC; sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32; sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_4; } else { /* 16 bit */ sc->lmc_miireg16 &= ~LMC_MII16_SSI_CRC; sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16; sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_2; } lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); } /* * These are bits to program the ssi frequency generator */ static inline void write_av9110_bit (lmc_softc_t * sc, int c) { /* * set the data bit as we need it. */ sc->lmc_gpio &= ~(LMC_GEP_CLK); if (c & 0x01) sc->lmc_gpio |= LMC_GEP_DATA; else sc->lmc_gpio &= ~(LMC_GEP_DATA); LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); /* * set the clock to high */ sc->lmc_gpio |= LMC_GEP_CLK; LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); /* * set the clock to low again. */ sc->lmc_gpio &= ~(LMC_GEP_CLK); LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); } static void write_av9110 (lmc_softc_t * sc, u_int32_t n, u_int32_t m, u_int32_t v, u_int32_t x, u_int32_t r) { int i; #if 0 printk (LMC_PRINTF_FMT ": speed %u, %d %d %d %d %d\n", LMC_PRINTF_ARGS, sc->ictl.clock_rate, n, m, v, x, r); #endif sc->lmc_gpio |= LMC_GEP_SSI_GENERATOR; sc->lmc_gpio &= ~(LMC_GEP_DATA | LMC_GEP_CLK); LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); /* * Set the TXCLOCK, GENERATOR, SERIAL, and SERIALCLK * as outputs. */ lmc_gpio_mkoutput (sc, (LMC_GEP_DATA | LMC_GEP_CLK | LMC_GEP_SSI_GENERATOR)); sc->lmc_gpio &= ~(LMC_GEP_SSI_GENERATOR); LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); /* * a shifting we will go... */ for (i = 0; i < 7; i++) write_av9110_bit (sc, n >> i); for (i = 0; i < 7; i++) write_av9110_bit (sc, m >> i); for (i = 0; i < 1; i++) write_av9110_bit (sc, v >> i); for (i = 0; i < 2; i++) write_av9110_bit (sc, x >> i); for (i = 0; i < 2; i++) write_av9110_bit (sc, r >> i); for (i = 0; i < 5; i++) write_av9110_bit (sc, 0x17 >> i); /* * stop driving serial-related signals */ lmc_gpio_mkinput (sc, (LMC_GEP_DATA | LMC_GEP_CLK | LMC_GEP_SSI_GENERATOR)); } static void lmc_ssi_watchdog(lmc_softc_t * const sc) { u16 mii17 = lmc_mii_readreg(sc, 0, 17); if (((mii17 >> 3) & 7) == 7) lmc_led_off(sc, LMC_MII16_LED2); else lmc_led_on(sc, LMC_MII16_LED2); } /* * T1 methods */ /* * The framer regs are multiplexed through MII regs 17 & 18 * write the register address to MII reg 17 and the * data to MII reg 18. */ static void lmc_t1_write (lmc_softc_t * const sc, int a, int d) { lmc_mii_writereg (sc, 0, 17, a); lmc_mii_writereg (sc, 0, 18, d); } /* Save a warning static int lmc_t1_read (lmc_softc_t * const sc, int a) { lmc_mii_writereg (sc, 0, 17, a); return lmc_mii_readreg (sc, 0, 18); } */ static void lmc_t1_init (lmc_softc_t * const sc) { u16 mii16; int i; sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC1200; mii16 = lmc_mii_readreg (sc, 0, 16); /* reset 8370 */ mii16 &= ~LMC_MII16_T1_RST; lmc_mii_writereg (sc, 0, 16, mii16 | LMC_MII16_T1_RST); lmc_mii_writereg (sc, 0, 16, mii16); /* set T1 or E1 line. Uses sc->lmcmii16 reg in function so update it */ sc->lmc_miireg16 = mii16; lmc_t1_set_circuit_type(sc, LMC_CTL_CIRCUIT_TYPE_T1); mii16 = sc->lmc_miireg16; lmc_t1_write (sc, 0x01, 0x1B); /* CR0 - primary control */ lmc_t1_write (sc, 0x02, 0x42); /* JAT_CR - jitter atten config */ lmc_t1_write (sc, 0x14, 0x00); /* LOOP - loopback config */ lmc_t1_write (sc, 0x15, 0x00); /* DL3_TS - external data link timeslot */ lmc_t1_write (sc, 0x18, 0xFF); /* PIO - programmable I/O */ lmc_t1_write (sc, 0x19, 0x30); /* POE - programmable OE */ lmc_t1_write (sc, 0x1A, 0x0F); /* CMUX - clock input mux */ lmc_t1_write (sc, 0x20, 0x41); /* LIU_CR - RX LIU config */ lmc_t1_write (sc, 0x22, 0x76); /* RLIU_CR - RX LIU config */ lmc_t1_write (sc, 0x40, 0x03); /* RCR0 - RX config */ lmc_t1_write (sc, 0x45, 0x00); /* RALM - RX alarm config */ lmc_t1_write (sc, 0x46, 0x05); /* LATCH - RX alarm/err/cntr latch */ lmc_t1_write (sc, 0x68, 0x40); /* TLIU_CR - TX LIU config */ lmc_t1_write (sc, 0x70, 0x0D); /* TCR0 - TX framer config */ lmc_t1_write (sc, 0x71, 0x05); /* TCR1 - TX config */ lmc_t1_write (sc, 0x72, 0x0B); /* TFRM - TX frame format */ lmc_t1_write (sc, 0x73, 0x00); /* TERROR - TX error insert */ lmc_t1_write (sc, 0x74, 0x00); /* TMAN - TX manual Sa/FEBE config */ lmc_t1_write (sc, 0x75, 0x00); /* TALM - TX alarm signal config */ lmc_t1_write (sc, 0x76, 0x00); /* TPATT - TX test pattern config */ lmc_t1_write (sc, 0x77, 0x00); /* TLB - TX inband loopback config */ lmc_t1_write (sc, 0x90, 0x05); /* CLAD_CR - clock rate adapter config */ lmc_t1_write (sc, 0x91, 0x05); /* CSEL - clad freq sel */ lmc_t1_write (sc, 0xA6, 0x00); /* DL1_CTL - DL1 control */ lmc_t1_write (sc, 0xB1, 0x00); /* DL2_CTL - DL2 control */ lmc_t1_write (sc, 0xD0, 0x47); /* SBI_CR - sys bus iface config */ lmc_t1_write (sc, 0xD1, 0x70); /* RSB_CR - RX sys bus config */ lmc_t1_write (sc, 0xD4, 0x30); /* TSB_CR - TX sys bus config */ for (i = 0; i < 32; i++) { lmc_t1_write (sc, 0x0E0 + i, 0x00); /* SBCn - sys bus per-channel ctl */ lmc_t1_write (sc, 0x100 + i, 0x00); /* TPCn - TX per-channel ctl */ lmc_t1_write (sc, 0x180 + i, 0x00); /* RPCn - RX per-channel ctl */ } for (i = 1; i < 25; i++) { lmc_t1_write (sc, 0x0E0 + i, 0x0D); /* SBCn - sys bus per-channel ctl */ } mii16 |= LMC_MII16_T1_XOE; lmc_mii_writereg (sc, 0, 16, mii16); sc->lmc_miireg16 = mii16; } static void lmc_t1_default (lmc_softc_t * const sc) { sc->lmc_miireg16 = LMC_MII16_LED_ALL; sc->lmc_media->set_link_status (sc, LMC_LINK_DOWN); sc->lmc_media->set_circuit_type (sc, LMC_CTL_CIRCUIT_TYPE_T1); sc->lmc_media->set_crc_length (sc, LMC_CTL_CRC_LENGTH_16); /* Right now we can only clock from out internal source */ sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT; } /* * Given a user provided state, set ourselves up to match it. This will * always reset the card if needed. */ static void lmc_t1_set_status (lmc_softc_t * const sc, lmc_ctl_t * ctl) { if (ctl == NULL) { sc->lmc_media->set_circuit_type (sc, sc->ictl.circuit_type); lmc_set_protocol (sc, NULL); return; } /* * check for change in circuit type */ if (ctl->circuit_type == LMC_CTL_CIRCUIT_TYPE_T1 && sc->ictl.circuit_type == LMC_CTL_CIRCUIT_TYPE_E1) sc->lmc_media->set_circuit_type (sc, LMC_CTL_CIRCUIT_TYPE_E1); else if (ctl->circuit_type == LMC_CTL_CIRCUIT_TYPE_E1 && sc->ictl.circuit_type == LMC_CTL_CIRCUIT_TYPE_T1) sc->lmc_media->set_circuit_type (sc, LMC_CTL_CIRCUIT_TYPE_T1); lmc_set_protocol (sc, ctl); } /* * return hardware link status. * 0 == link is down, 1 == link is up. */ static int lmc_t1_get_link_status (lmc_softc_t * const sc) { u16 link_status; int ret = 1; /* LMC5245 (DS3) & LMC1200 (DS1) LED definitions * led0 yellow = far-end adapter is in Red alarm condition * led1 blue = received an Alarm Indication signal * (upstream failure) * led2 Green = power to adapter, Gate Array loaded & driver * attached * led3 red = Loss of Signal (LOS) or out of frame (OOF) * conditions detected on T3 receive signal */ lmc_trace(sc->lmc_device, "lmc_t1_get_link_status in"); lmc_led_on(sc, LMC_DS3_LED2); lmc_mii_writereg (sc, 0, 17, T1FRAMER_ALARM1_STATUS); link_status = lmc_mii_readreg (sc, 0, 18); if (link_status & T1F_RAIS) { /* turn on blue LED */ ret = 0; if(sc->last_led_err[1] != 1){ printk(KERN_WARNING "%s: Receive AIS/Blue Alarm. Far end in RED alarm\n", sc->name); } lmc_led_on(sc, LMC_DS3_LED1); sc->last_led_err[1] = 1; } else { if(sc->last_led_err[1] != 0){ printk(KERN_WARNING "%s: End AIS/Blue Alarm\n", sc->name); } lmc_led_off (sc, LMC_DS3_LED1); sc->last_led_err[1] = 0; } /* * Yellow Alarm is nasty evil stuff, looks at data patterns * inside the channel and confuses it with HDLC framing * ignore all yellow alarms. * * Do listen to MultiFrame Yellow alarm which while implemented * different ways isn't in the channel and hence somewhat * more reliable */ if (link_status & T1F_RMYEL) { ret = 0; if(sc->last_led_err[0] != 1){ printk(KERN_WARNING "%s: Receive Yellow AIS Alarm\n", sc->name); } lmc_led_on(sc, LMC_DS3_LED0); sc->last_led_err[0] = 1; } else { if(sc->last_led_err[0] != 0){ printk(KERN_WARNING "%s: End of Yellow AIS Alarm\n", sc->name); } lmc_led_off(sc, LMC_DS3_LED0); sc->last_led_err[0] = 0; } /* * Loss of signal and los of frame * Use the green bit to identify which one lit the led */ if(link_status & T1F_RLOF){ ret = 0; if(sc->last_led_err[3] != 1){ printk(KERN_WARNING "%s: Local Red Alarm: Loss of Framing\n", sc->name); } lmc_led_on(sc, LMC_DS3_LED3); sc->last_led_err[3] = 1; } else { if(sc->last_led_err[3] != 0){ printk(KERN_WARNING "%s: End Red Alarm (LOF)\n", sc->name); } if( ! (link_status & T1F_RLOS)) lmc_led_off(sc, LMC_DS3_LED3); sc->last_led_err[3] = 0; } if(link_status & T1F_RLOS){ ret = 0; if(sc->last_led_err[2] != 1){ printk(KERN_WARNING "%s: Local Red Alarm: Loss of Signal\n", sc->name); } lmc_led_on(sc, LMC_DS3_LED3); sc->last_led_err[2] = 1; } else { if(sc->last_led_err[2] != 0){ printk(KERN_WARNING "%s: End Red Alarm (LOS)\n", sc->name); } if( ! (link_status & T1F_RLOF)) lmc_led_off(sc, LMC_DS3_LED3); sc->last_led_err[2] = 0; } sc->lmc_xinfo.t1_alarm1_status = link_status; lmc_mii_writereg (sc, 0, 17, T1FRAMER_ALARM2_STATUS); sc->lmc_xinfo.t1_alarm2_status = lmc_mii_readreg (sc, 0, 18); lmc_trace(sc->lmc_device, "lmc_t1_get_link_status out"); return ret; } /* * 1 == T1 Circuit Type , 0 == E1 Circuit Type */ static void lmc_t1_set_circuit_type (lmc_softc_t * const sc, int ie) { if (ie == LMC_CTL_CIRCUIT_TYPE_T1) { sc->lmc_miireg16 |= LMC_MII16_T1_Z; sc->ictl.circuit_type = LMC_CTL_CIRCUIT_TYPE_T1; printk(KERN_INFO "%s: In T1 Mode\n", sc->name); } else { sc->lmc_miireg16 &= ~LMC_MII16_T1_Z; sc->ictl.circuit_type = LMC_CTL_CIRCUIT_TYPE_E1; printk(KERN_INFO "%s: In E1 Mode\n", sc->name); } lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); } /* * 0 == 16bit, 1 == 32bit */ static void lmc_t1_set_crc_length (lmc_softc_t * const sc, int state) { if (state == LMC_CTL_CRC_LENGTH_32) { /* 32 bit */ sc->lmc_miireg16 |= LMC_MII16_T1_CRC; sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32; sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_4; } else { /* 16 bit */ sc->lmc_miireg16 &= ~LMC_MII16_T1_CRC; sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16; sc->lmc_crcSize = LMC_CTL_CRC_BYTESIZE_2; } lmc_mii_writereg (sc, 0, 16, sc->lmc_miireg16); } /* * 1 == internal, 0 == external */ static void lmc_t1_set_clock (lmc_softc_t * const sc, int ie) { int old; old = ie; if (ie == LMC_CTL_CLOCK_SOURCE_EXT) { sc->lmc_gpio &= ~(LMC_GEP_SSI_TXCLOCK); LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT; if(old != ie) printk (LMC_PRINTF_FMT ": clock external\n", LMC_PRINTF_ARGS); } else { sc->lmc_gpio |= LMC_GEP_SSI_TXCLOCK; LMC_CSR_WRITE (sc, csr_gp, sc->lmc_gpio); sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT; if(old != ie) printk (LMC_PRINTF_FMT ": clock internal\n", LMC_PRINTF_ARGS); } } static void lmc_t1_watchdog (lmc_softc_t * const sc) { } static void lmc_set_protocol (lmc_softc_t * const sc, lmc_ctl_t * ctl) { if (!ctl) sc->ictl.keepalive_onoff = LMC_CTL_ON; }