/* $NetBSD: pcc.c,v 1.13 2000/03/18 22:33:03 scw Exp $ */ /*- * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe and Steve C. Woodford. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /* * Copyright (c) 1995 Charles D. Cranor * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Charles D. Cranor. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. */ /* * peripheral channel controller */ #include #include #include #include #include #include #include #include #include #include /* * Autoconfiguration stuff for the PCC chip on mvme147 */ void pccattach __P((struct device *, struct device *, void *)); int pccmatch __P((struct device *, struct cfdata *, void *)); int pccprint __P((void *, const char *)); struct cfattach pcc_ca = { sizeof(struct pcc_softc), pccmatch, pccattach }; extern struct cfdriver pcc_cd; static int pccintr __P((void *)); /* * Structure used to describe a device for autoconfiguration purposes. */ struct pcc_device { char *pcc_name; /* name of device (e.g. "clock") */ bus_addr_t pcc_offset; /* offset from PCC base */ }; /* * Devices that live on the PCC, attached in this order. */ static struct pcc_device pcc_devices[] = { {"clock", PCC_RTC_OFF}, {"nvram", PCC_NVRAM_OFF}, {"zsc", PCC_ZS0_OFF}, {"zsc", PCC_ZS1_OFF}, {"le", PCC_LE_OFF}, {"wdsc", PCC_WDSC_OFF}, {"lpt", PCC_LPT_OFF}, {"vmepcc", PCC_VME_OFF}, {NULL, 0}, }; static int pcc_vec2intctrl[] = { PCCREG_ACFAIL_INTR_CTRL,/* PCCV_ACFAIL */ PCCREG_BUSERR_INTR_CTRL,/* PCCV_BERR */ PCCREG_ABORT_INTR_CTRL, /* PCCV_ABORT */ PCCREG_SERIAL_INTR_CTRL,/* PCCV_ZS */ PCCREG_LANCE_INTR_CTRL, /* PCCV_LE */ PCCREG_SCSI_INTR_CTRL, /* PCCV_SCSI */ PCCREG_DMA_INTR_CTRL, /* PCCV_DMA */ PCCREG_PRNT_INTR_CTRL, /* PCCV_PRINTER */ PCCREG_TMR1_INTR_CTRL, /* PCCV_TIMER1 */ PCCREG_TMR2_INTR_CTRL, /* PCCV_TIMER2 */ PCCREG_SOFT1_INTR_CTRL, /* PCCV_SOFT1 */ PCCREG_SOFT2_INTR_CTRL /* PCCV_SOFT2 */ }; struct pcc_softc *sys_pcc; /* ARGSUSED */ int pccmatch(parent, cf, args) struct device *parent; struct cfdata *cf; void *args; { struct mainbus_attach_args *ma; ma = args; /* Only attach one PCC. */ if (sys_pcc) return (0); return (strcmp(ma->ma_name, pcc_cd.cd_name) == 0); } /* ARGSUSED */ void pccattach(parent, self, args) struct device *parent; struct device *self; void *args; { struct mainbus_attach_args *ma; struct pcc_attach_args npa; struct pcc_softc *sc; u_int8_t reg; int i; ma = args; sc = sys_pcc = (struct pcc_softc *) self; /* Get a handle to the PCC's registers. */ sc->sc_bust = ma->ma_bust; bus_space_map(sc->sc_bust, PCC_REG_OFF + ma->ma_offset, PCCREG_SIZE, 0, &sc->sc_bush); /* Tell the chip the base interrupt vector */ pcc_reg_write(sc, PCCREG_VECTOR_BASE, PCC_VECBASE); printf(": Peripheral Channel Controller, " "rev %d, vecbase 0x%x\n", pcc_reg_read(sc, PCCREG_REVISION), pcc_reg_read(sc, PCCREG_VECTOR_BASE)); /* Hook up interrupt handler for abort button, and enable it */ pccintr_establish(PCCV_ABORT, pccintr, 7, NULL); pcc_reg_write(sc, PCCREG_ABORT_INTR_CTRL, PCC_ABORT_IEN | PCC_ABORT_ACK); /* Make sure the global interrupt line is hot. */ reg = pcc_reg_read(sc, PCCREG_GENERAL_CONTROL) | PCC_GENCR_IEN; pcc_reg_write(sc, PCCREG_GENERAL_CONTROL, reg); /* * Attach configured children. */ for (i = 0; pcc_devices[i].pcc_name != NULL; ++i) { /* * Note that IPL is filled in by match function. */ npa.pa_name = pcc_devices[i].pcc_name; npa.pa_ipl = -1; npa.pa_dmat = ma->ma_dmat; npa.pa_bust = ma->ma_bust; npa.pa_offset = pcc_devices[i].pcc_offset + ma->ma_offset; /* Attach the device if configured. */ (void) config_found(self, &npa, pccprint); } } int pccprint(aux, cp) void *aux; const char *cp; { struct pcc_attach_args *pa; pa = aux; if (cp) printf("%s at %s", pa->pa_name, cp); printf(" offset 0x%lx", pa->pa_offset); if (pa->pa_ipl != -1) printf(" ipl %d", pa->pa_ipl); return (UNCONF); } /* * pccintr_establish: establish pcc interrupt */ void pccintr_establish(pccvec, hand, lvl, arg) int pccvec; int (*hand) __P((void *)), lvl; void *arg; { #ifdef DEBUG if (pccvec < 0 || pccvec >= PCC_NVEC) { printf("pcc: illegal vector offset: 0x%x\n", pccvec); panic("pccintr_establish"); } if (lvl < 1 || lvl > 7) { printf("pcc: illegal interrupt level: %d\n", lvl); panic("pccintr_establish"); } #endif isrlink_vectored(hand, arg, lvl, pccvec + PCC_VECBASE); } void pccintr_disestablish(pccvec) int pccvec; { #ifdef DEBUG if (pccvec < 0 || pccvec >= PCC_NVEC) { printf("pcc: illegal vector offset: 0x%x\n", pccvec); panic("pccintr_disestablish"); } #endif /* Disable the interrupt */ pcc_reg_write(sys_pcc, pcc_vec2intctrl[pccvec], PCC_ICLEAR); isrunlink_vectored(pccvec + PCC_VECBASE); } /* * Handle NMI from abort switch. */ static int pccintr(frame) void *frame; { /* XXX wait until button pops out */ pcc_reg_write(sys_pcc, PCCREG_ABORT_INTR_CTRL, PCC_ABORT_IEN | PCC_ABORT_ACK); return (nmihand(frame)); }