/****************************************************************************** * * (C)Copyright 1998,1999 SysKonnect, * a business unit of Schneider & Koch & Co. Datensysteme GmbH. * * See the file "skfddi.c" for further information. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * The information in this file is provided "AS IS" without warranty. * ******************************************************************************/ /* * FBI board dependent Driver for SMT and LLC */ #include "h/types.h" #include "h/fddi.h" #include "h/smc.h" #include "h/supern_2.h" #include "h/skfbiinc.h" #include <linux/bitrev.h> #ifndef lint static const char ID_sccs[] = "@(#)drvfbi.c 1.63 99/02/11 (C) SK " ; #endif /* * PCM active state */ #define PC8_ACTIVE 8 #define LED_Y_ON 0x11 /* Used for ring up/down indication */ #define LED_Y_OFF 0x10 #define MS2BCLK(x) ((x)*12500L) /* * valid configuration values are: */ /* * xPOS_ID:xxxx * | \ / * | \/ * | --------------------- the patched POS_ID of the Adapter * | xxxx = (Vendor ID low byte, * | Vendor ID high byte, * | Device ID low byte, * | Device ID high byte) * +------------------------------ the patched oem_id must be * 'S' for SK or 'I' for IBM * this is a short id for the driver. */ #ifndef MULT_OEM #ifndef OEM_CONCEPT const u_char oem_id[] = "xPOS_ID:xxxx" ; #else /* OEM_CONCEPT */ const u_char oem_id[] = OEM_ID ; #endif /* OEM_CONCEPT */ #define ID_BYTE0 8 #define OEMID(smc,i) oem_id[ID_BYTE0 + i] #else /* MULT_OEM */ const struct s_oem_ids oem_ids[] = { #include "oemids.h" {0} }; #define OEMID(smc,i) smc->hw.oem_id->oi_id[i] #endif /* MULT_OEM */ /* Prototypes of external functions */ #ifdef AIX extern int AIX_vpdReadByte() ; #endif /* Prototype of a local function. */ static void smt_stop_watchdog(struct s_smc *smc); /* * FDDI card reset */ static void card_start(struct s_smc *smc) { int i ; #ifdef PCI u_char rev_id ; u_short word; #endif smt_stop_watchdog(smc) ; #ifdef PCI /* * make sure no transfer activity is pending */ outpw(FM_A(FM_MDREG1),FM_MINIT) ; outp(ADDR(B0_CTRL), CTRL_HPI_SET) ; hwt_wait_time(smc,hwt_quick_read(smc),MS2BCLK(10)) ; /* * now reset everything */ outp(ADDR(B0_CTRL),CTRL_RST_SET) ; /* reset for all chips */ i = (int) inp(ADDR(B0_CTRL)) ; /* do dummy read */ SK_UNUSED(i) ; /* Make LINT happy. */ outp(ADDR(B0_CTRL), CTRL_RST_CLR) ; /* * Reset all bits in the PCI STATUS register */ outp(ADDR(B0_TST_CTRL), TST_CFG_WRITE_ON) ; /* enable for writes */ word = inpw(PCI_C(PCI_STATUS)) ; outpw(PCI_C(PCI_STATUS), word | PCI_ERRBITS) ; outp(ADDR(B0_TST_CTRL), TST_CFG_WRITE_OFF) ; /* disable writes */ /* * Release the reset of all the State machines * Release Master_Reset * Release HPI_SM_Reset */ outp(ADDR(B0_CTRL), CTRL_MRST_CLR|CTRL_HPI_CLR) ; /* * determine the adapter type * Note: Do it here, because some drivers may call card_start() once * at very first before any other initialization functions is * executed. */ rev_id = inp(PCI_C(PCI_REV_ID)) ; if ((rev_id & 0xf0) == SK_ML_ID_1 || (rev_id & 0xf0) == SK_ML_ID_2) { smc->hw.hw_is_64bit = TRUE ; } else { smc->hw.hw_is_64bit = FALSE ; } /* * Watermark initialization */ if (!smc->hw.hw_is_64bit) { outpd(ADDR(B4_R1_F), RX_WATERMARK) ; outpd(ADDR(B5_XA_F), TX_WATERMARK) ; outpd(ADDR(B5_XS_F), TX_WATERMARK) ; } outp(ADDR(B0_CTRL),CTRL_RST_CLR) ; /* clear the reset chips */ outp(ADDR(B0_LED),LED_GA_OFF|LED_MY_ON|LED_GB_OFF) ; /* ye LED on */ /* init the timer value for the watch dog 2,5 minutes */ outpd(ADDR(B2_WDOG_INI),0x6FC23AC0) ; /* initialize the ISR mask */ smc->hw.is_imask = ISR_MASK ; smc->hw.hw_state = STOPPED ; #endif GET_PAGE(0) ; /* necessary for BOOT */ } void card_stop(struct s_smc *smc) { smt_stop_watchdog(smc) ; smc->hw.mac_ring_is_up = 0 ; /* ring down */ #ifdef PCI /* * make sure no transfer activity is pending */ outpw(FM_A(FM_MDREG1),FM_MINIT) ; outp(ADDR(B0_CTRL), CTRL_HPI_SET) ; hwt_wait_time(smc,hwt_quick_read(smc),MS2BCLK(10)) ; /* * now reset everything */ outp(ADDR(B0_CTRL),CTRL_RST_SET) ; /* reset for all chips */ outp(ADDR(B0_CTRL),CTRL_RST_CLR) ; /* reset for all chips */ outp(ADDR(B0_LED),LED_GA_OFF|LED_MY_OFF|LED_GB_OFF) ; /* all LEDs off */ smc->hw.hw_state = STOPPED ; #endif } /*--------------------------- ISR handling ----------------------------------*/ void mac1_irq(struct s_smc *smc, u_short stu, u_short stl) { int restart_tx = 0 ; again: /* * parity error: note encoding error is not possible in tag mode */ if (stl & (FM_SPCEPDS | /* parity err. syn.q.*/ FM_SPCEPDA0 | /* parity err. a.q.0 */ FM_SPCEPDA1)) { /* parity err. a.q.1 */ SMT_PANIC(smc,SMT_E0134, SMT_E0134_MSG) ; } /* * buffer underrun: can only occur if a tx threshold is specified */ if (stl & (FM_STBURS | /* tx buffer underrun syn.q.*/ FM_STBURA0 | /* tx buffer underrun a.q.0 */ FM_STBURA1)) { /* tx buffer underrun a.q.2 */ SMT_PANIC(smc,SMT_E0133, SMT_E0133_MSG) ; } if ( (stu & (FM_SXMTABT | /* transmit abort */ FM_STXABRS | /* syn. tx abort */ FM_STXABRA0)) || /* asyn. tx abort */ (stl & (FM_SQLCKS | /* lock for syn. q. */ FM_SQLCKA0)) ) { /* lock for asyn. q. */ formac_tx_restart(smc) ; /* init tx */ restart_tx = 1 ; stu = inpw(FM_A(FM_ST1U)) ; stl = inpw(FM_A(FM_ST1L)) ; stu &= ~ (FM_STECFRMA0 | FM_STEFRMA0 | FM_STEFRMS) ; if (stu || stl) goto again ; } if (stu & (FM_STEFRMA0 | /* end of asyn tx */ FM_STEFRMS)) { /* end of sync tx */ restart_tx = 1 ; } if (restart_tx) llc_restart_tx(smc) ; } /* * interrupt source= plc1 * this function is called in nwfbisr.asm */ void plc1_irq(struct s_smc *smc) { u_short st = inpw(PLC(PB,PL_INTR_EVENT)) ; plc_irq(smc,PB,st) ; } /* * interrupt source= plc2 * this function is called in nwfbisr.asm */ void plc2_irq(struct s_smc *smc) { u_short st = inpw(PLC(PA,PL_INTR_EVENT)) ; plc_irq(smc,PA,st) ; } /* * interrupt source= timer */ void timer_irq(struct s_smc *smc) { hwt_restart(smc); smc->hw.t_stop = smc->hw.t_start; smt_timer_done(smc) ; } /* * return S-port (PA or PB) */ int pcm_get_s_port(struct s_smc *smc) { SK_UNUSED(smc) ; return(PS) ; } /* * Station Label = "FDDI-XYZ" where * * X = connector type * Y = PMD type * Z = port type */ #define STATION_LABEL_CONNECTOR_OFFSET 5 #define STATION_LABEL_PMD_OFFSET 6 #define STATION_LABEL_PORT_OFFSET 7 void read_address(struct s_smc *smc, u_char *mac_addr) { char ConnectorType ; char PmdType ; int i ; #ifdef PCI for (i = 0; i < 6; i++) { /* read mac address from board */ smc->hw.fddi_phys_addr.a[i] = bitrev8(inp(ADDR(B2_MAC_0+i))); } #endif ConnectorType = inp(ADDR(B2_CONN_TYP)) ; PmdType = inp(ADDR(B2_PMD_TYP)) ; smc->y[PA].pmd_type[PMD_SK_CONN] = smc->y[PB].pmd_type[PMD_SK_CONN] = ConnectorType ; smc->y[PA].pmd_type[PMD_SK_PMD ] = smc->y[PB].pmd_type[PMD_SK_PMD ] = PmdType ; if (mac_addr) { for (i = 0; i < 6 ;i++) { smc->hw.fddi_canon_addr.a[i] = mac_addr[i] ; smc->hw.fddi_home_addr.a[i] = bitrev8(mac_addr[i]); } return ; } smc->hw.fddi_home_addr = smc->hw.fddi_phys_addr ; for (i = 0; i < 6 ;i++) { smc->hw.fddi_canon_addr.a[i] = bitrev8(smc->hw.fddi_phys_addr.a[i]); } } /* * FDDI card soft reset */ void init_board(struct s_smc *smc, u_char *mac_addr) { card_start(smc) ; read_address(smc,mac_addr) ; if (!(inp(ADDR(B0_DAS)) & DAS_AVAIL)) smc->s.sas = SMT_SAS ; /* Single att. station */ else smc->s.sas = SMT_DAS ; /* Dual att. station */ if (!(inp(ADDR(B0_DAS)) & DAS_BYP_ST)) smc->mib.fddiSMTBypassPresent = 0 ; /* without opt. bypass */ else smc->mib.fddiSMTBypassPresent = 1 ; /* with opt. bypass */ } /* * insert or deinsert optical bypass (called by ECM) */ void sm_pm_bypass_req(struct s_smc *smc, int mode) { DB_ECMN(1,"ECM : sm_pm_bypass_req(%s)\n",(mode == BP_INSERT) ? "BP_INSERT" : "BP_DEINSERT",0) ; if (smc->s.sas != SMT_DAS) return ; #ifdef PCI switch(mode) { case BP_INSERT : outp(ADDR(B0_DAS),DAS_BYP_INS) ; /* insert station */ break ; case BP_DEINSERT : outp(ADDR(B0_DAS),DAS_BYP_RMV) ; /* bypass station */ break ; } #endif } /* * check if bypass connected */ int sm_pm_bypass_present(struct s_smc *smc) { return( (inp(ADDR(B0_DAS)) & DAS_BYP_ST) ? TRUE: FALSE) ; } void plc_clear_irq(struct s_smc *smc, int p) { SK_UNUSED(p) ; SK_UNUSED(smc) ; } /* * led_indication called by rmt_indication() and * pcm_state_change() * * Input: * smc: SMT context * led_event: * 0 Only switch green LEDs according to their respective PCM state * LED_Y_OFF just switch yellow LED off * LED_Y_ON just switch yello LED on */ static void led_indication(struct s_smc *smc, int led_event) { /* use smc->hw.mac_ring_is_up == TRUE * as indication for Ring Operational */ u_short led_state ; struct s_phy *phy ; struct fddi_mib_p *mib_a ; struct fddi_mib_p *mib_b ; phy = &smc->y[PA] ; mib_a = phy->mib ; phy = &smc->y[PB] ; mib_b = phy->mib ; #ifdef PCI led_state = 0 ; /* Ring up = yellow led OFF*/ if (led_event == LED_Y_ON) { led_state |= LED_MY_ON ; } else if (led_event == LED_Y_OFF) { led_state |= LED_MY_OFF ; } else { /* PCM state changed */ /* Link at Port A/S = green led A ON */ if (mib_a->fddiPORTPCMState == PC8_ACTIVE) { led_state |= LED_GA_ON ; } else { led_state |= LED_GA_OFF ; } /* Link at Port B = green led B ON */ if (mib_b->fddiPORTPCMState == PC8_ACTIVE) { led_state |= LED_GB_ON ; } else { led_state |= LED_GB_OFF ; } } outp(ADDR(B0_LED), led_state) ; #endif /* PCI */ } void pcm_state_change(struct s_smc *smc, int plc, int p_state) { /* * the current implementation of pcm_state_change() in the driver * parts must be renamed to drv_pcm_state_change() which will be called * now after led_indication. */ DRV_PCM_STATE_CHANGE(smc,plc,p_state) ; led_indication(smc,0) ; } void rmt_indication(struct s_smc *smc, int i) { /* Call a driver special function if defined */ DRV_RMT_INDICATION(smc,i) ; led_indication(smc, i ? LED_Y_OFF : LED_Y_ON) ; } /* * llc_recover_tx called by init_tx (fplus.c) */ void llc_recover_tx(struct s_smc *smc) { #ifdef LOAD_GEN extern int load_gen_flag ; load_gen_flag = 0 ; #endif #ifndef SYNC smc->hw.n_a_send= 0 ; #else SK_UNUSED(smc) ; #endif } #ifdef MULT_OEM static int is_equal_num(char comp1[], char comp2[], int num) { int i ; for (i = 0 ; i < num ; i++) { if (comp1[i] != comp2[i]) return (0) ; } return (1) ; } /* is_equal_num */ /* * set the OEM ID defaults, and test the contents of the OEM data base * The default OEM is the first ACTIVE entry in the OEM data base * * returns: 0 success * 1 error in data base * 2 data base empty * 3 no active entry */ int set_oi_id_def(struct s_smc *smc) { int sel_id ; int i ; int act_entries ; i = 0 ; sel_id = -1 ; act_entries = FALSE ; smc->hw.oem_id = 0 ; smc->hw.oem_min_status = OI_STAT_ACTIVE ; /* check OEM data base */ while (oem_ids[i].oi_status) { switch (oem_ids[i].oi_status) { case OI_STAT_ACTIVE: act_entries = TRUE ; /* we have active IDs */ if (sel_id == -1) sel_id = i ; /* save the first active ID */ case OI_STAT_VALID: case OI_STAT_PRESENT: i++ ; break ; /* entry ok */ default: return (1) ; /* invalid oi_status */ } } if (i == 0) return (2) ; if (!act_entries) return (3) ; /* ok, we have a valid OEM data base with an active entry */ smc->hw.oem_id = (struct s_oem_ids *) &oem_ids[sel_id] ; return (0) ; } #endif /* MULT_OEM */ void driver_get_bia(struct s_smc *smc, struct fddi_addr *bia_addr) { int i ; for (i = 0 ; i < 6 ; i++) bia_addr->a[i] = bitrev8(smc->hw.fddi_phys_addr.a[i]); } void smt_start_watchdog(struct s_smc *smc) { SK_UNUSED(smc) ; /* Make LINT happy. */ #ifndef DEBUG #ifdef PCI if (smc->hw.wdog_used) { outpw(ADDR(B2_WDOG_CRTL),TIM_START) ; /* Start timer. */ } #endif #endif /* DEBUG */ } static void smt_stop_watchdog(struct s_smc *smc) { SK_UNUSED(smc) ; /* Make LINT happy. */ #ifndef DEBUG #ifdef PCI if (smc->hw.wdog_used) { outpw(ADDR(B2_WDOG_CRTL),TIM_STOP) ; /* Stop timer. */ } #endif #endif /* DEBUG */ } #ifdef PCI void mac_do_pci_fix(struct s_smc *smc) { SK_UNUSED(smc) ; } #endif /* PCI */