/* * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * *--------------------------------------------------------------------------- * * i4b_isic.c - global isic stuff * ============================== * * $Id: isic.c,v 1.18 2002/05/21 10:31:12 martin Exp $ * * last edit-date: [Fri Jan 5 11:36:10 2001] * *---------------------------------------------------------------------------*/ #include __KERNEL_RCSID(0, "$NetBSD: isic.c,v 1.18 2002/05/21 10:31:12 martin Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include isdn_link_t *isic_ret_linktab(void*, int channel); void isic_set_link(void*, int channel, const struct isdn_l4_driver_functions *l4_driver, void *l4_driver_softc); void n_connect_request(struct call_desc *cd); void n_connect_response(struct call_desc *cd, int response, int cause); void n_disconnect_request(struct call_desc *cd, int cause); void n_alert_request(struct call_desc *cd); void n_mgmt_command(struct isdn_l3_driver *drv, int cmd, void *parm); const struct isdn_l3_driver_functions isic_l3_driver = { isic_ret_linktab, isic_set_link, n_connect_request, n_connect_response, n_disconnect_request, n_alert_request, NULL, NULL, n_mgmt_command }; /*---------------------------------------------------------------------------* * isic - device driver interrupt routine *---------------------------------------------------------------------------*/ int isicintr(void *arg) { struct isic_softc *sc = arg; /* could this be an interrupt for us? */ if (sc->sc_intr_valid == ISIC_INTR_DYING) return 0; /* do not touch removed hardware */ if(sc->sc_ipac == 0) /* HSCX/ISAC interupt routine */ { u_char was_hscx_irq = 0; u_char was_isac_irq = 0; register u_char hscx_irq_stat; register u_char isac_irq_stat; for(;;) { /* get hscx irq status from hscx b ista */ hscx_irq_stat = HSCX_READ(HSCX_CH_B, H_ISTA) & ~HSCX_B_IMASK; /* get isac irq status */ isac_irq_stat = ISAC_READ(I_ISTA); /* do as long as there are pending irqs in the chips */ if(!hscx_irq_stat && !isac_irq_stat) break; if(hscx_irq_stat & (HSCX_ISTA_RME | HSCX_ISTA_RPF | HSCX_ISTA_RSC | HSCX_ISTA_XPR | HSCX_ISTA_TIN | HSCX_ISTA_EXB)) { isic_hscx_irq(sc, hscx_irq_stat, HSCX_CH_B, hscx_irq_stat & HSCX_ISTA_EXB); was_hscx_irq = 1; } if(hscx_irq_stat & (HSCX_ISTA_ICA | HSCX_ISTA_EXA)) { isic_hscx_irq(sc, HSCX_READ(HSCX_CH_A, H_ISTA) & ~HSCX_A_IMASK, HSCX_CH_A, hscx_irq_stat & HSCX_ISTA_EXA); was_hscx_irq = 1; } if(isac_irq_stat) { /* isac handler */ isic_isac_irq(sc, isac_irq_stat); was_isac_irq = 1; } } HSCX_WRITE(0, H_MASK, 0xff); ISAC_WRITE(I_MASK, 0xff); HSCX_WRITE(1, H_MASK, 0xff); if (sc->clearirq) { DELAY(80); sc->clearirq(sc); } else DELAY(100); HSCX_WRITE(0, H_MASK, HSCX_A_IMASK); ISAC_WRITE(I_MASK, ISAC_IMASK); HSCX_WRITE(1, H_MASK, HSCX_B_IMASK); return(was_hscx_irq || was_isac_irq); } else /* IPAC interrupt routine */ { register u_char ipac_irq_stat; register u_char was_ipac_irq = 0; for(;;) { /* get global irq status */ ipac_irq_stat = (IPAC_READ(IPAC_ISTA)) & 0x3f; /* check hscx a */ if(ipac_irq_stat & (IPAC_ISTA_ICA | IPAC_ISTA_EXA)) { /* HSCX A interrupt */ isic_hscx_irq(sc, HSCX_READ(HSCX_CH_A, H_ISTA), HSCX_CH_A, ipac_irq_stat & IPAC_ISTA_EXA); was_ipac_irq = 1; } if(ipac_irq_stat & (IPAC_ISTA_ICB | IPAC_ISTA_EXB)) { /* HSCX B interrupt */ isic_hscx_irq(sc, HSCX_READ(HSCX_CH_B, H_ISTA), HSCX_CH_B, ipac_irq_stat & IPAC_ISTA_EXB); was_ipac_irq = 1; } if(ipac_irq_stat & IPAC_ISTA_ICD) { /* ISAC interrupt, Obey ISAC-IPAC differences */ u_int8_t isac_ista = ISAC_READ(I_ISTA); if (isac_ista & 0xfe) isic_isac_irq(sc, isac_ista & 0xfe); if (isac_ista & 0x01) /* unexpected */ printf("%s: unexpected ipac timer2 irq\n", sc->sc_dev.dv_xname); was_ipac_irq = 1; } if(ipac_irq_stat & IPAC_ISTA_EXD) { /* ISAC EXI interrupt */ isic_isac_irq(sc, ISAC_ISTA_EXI); was_ipac_irq = 1; } /* do as long as there are pending irqs in the chip */ if(!ipac_irq_stat) break; } #if 0 /* * This seems not to be necessary on IPACs - no idea why * it is here - but due to limit range of test cards, leave * it in for now, in case we have to resurrect it. */ IPAC_WRITE(IPAC_MASK, 0xff); DELAY(50); IPAC_WRITE(IPAC_MASK, 0xc0); #endif return(was_ipac_irq); } } int isic_attach_bri(struct isic_softc *sc, const char *cardname, const struct isdn_layer1_bri_driver *dchan_driver) { struct isdn_l3_driver * drv; drv = isdn_attach_bri(sc->sc_dev.dv_xname, cardname, &sc->sc_l2, &isic_l3_driver); sc->sc_l3token = drv; sc->sc_l2.driver = dchan_driver; sc->sc_l2.l1_token = sc; sc->sc_l2.drv = drv; isdn_layer2_status_ind(&sc->sc_l2, drv, STI_ATTACH, 1); isdn_bri_ready(drv->bri); return 1; } int isic_detach_bri(struct isic_softc *sc) { isdn_layer2_status_ind(&sc->sc_l2, sc->sc_l3token, STI_ATTACH, 0); isdn_detach_bri(sc->sc_l3token); sc->sc_l3token = NULL; return 1; }