/* $OpenBSD: frodo.c,v 1.13 2010/09/20 06:33:47 matthew Exp $ */ /* $NetBSD: frodo.c,v 1.5 1999/07/31 21:15:20 thorpej Exp $ */ /*- * Copyright (c) 1997, 1998, 1999 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe. * * 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 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) 1997 Michael Smith. 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. */ /* * Support for the "Frodo" (a.k.a. "Apollo Utility") chip found * in HP Apollo 9000/4xx workstations, as well as HP 9000/362 and 9000/382. */ #include #include #include #include #include #include #include #include #include #include #include #include #include "isabr.h" #if NISABR > 0 #include #include #include #endif struct frodo_softc { struct device sc_dev; /* generic device glue */ volatile u_int8_t *sc_regs; /* register base */ struct isr *sc_intr[FRODO_NINTR]; /* interrupt handlers */ struct isr sc_isr; /* main interrupt handler */ u_int sc_refcnt; /* number of interrupt refs */ }; int frodomatch(struct device *, void *, void *); void frodoattach(struct device *, struct device *, void *); int frodoprint(void *, const char *); int frodosubmatch(struct device *, void *, void *); int frodointr(void *); void frodo_imask(struct frodo_softc *, u_int16_t, u_int16_t); int frodo_isa_exists(void); void frodo_state(struct frodo_softc *); struct cfattach frodo_ca = { sizeof(struct frodo_softc), frodomatch, frodoattach }; struct cfdriver frodo_cd = { NULL, "frodo", DV_DULL }; struct frodo_attach_args frodo_subdevs[] = { { "dnkbd", NULL, FRODO_APCI_OFFSET(0), FRODO_INTR_APCI0 }, { "apci", NULL, FRODO_APCI_OFFSET(1), FRODO_INTR_APCI1 }, { "apci", NULL, FRODO_APCI_OFFSET(2), FRODO_INTR_APCI2 }, { "apci", NULL, FRODO_APCI_OFFSET(3), FRODO_INTR_APCI3 }, { NULL, NULL, 0, 0 }, }; #define FRODO_IPL 5 int frodomatch(parent, match, aux) struct device *parent; void *match, *aux; { struct intio_attach_args *ia = aux; caddr_t va; static int frodo_matched = 0; /* only allow one instance */ if (frodo_matched) return (0); /* only specific workstations can have this */ switch (machineid) { case HP_362: case HP_382: case HP_400: case HP_425: case HP_433: break; default: return (0); } /* make sure the hardware is there in any case */ va = (caddr_t)IIOV(FRODO_BASE); if (badaddr(va)) return (0); frodo_matched = 1; ia->ia_addr = (caddr_t)FRODO_BASE; return (1); } void frodoattach(parent, self, aux) struct device *parent, *self; void *aux; { struct frodo_softc *sc = (struct frodo_softc *)self; struct intio_attach_args *ia = aux; int i; sc->sc_regs = (volatile u_int8_t *)IIOV(ia->ia_addr); printf(" ipl %d", FRODO_IPL); if ((FRODO_READ(sc, FRODO_IISR) & FRODO_IISR_SERVICE) == 0) printf(": service mode enabled"); printf("\n"); /* Clear all of the interrupt handlers. */ bzero(sc->sc_intr, sizeof(sc->sc_intr)); /* * Disable all of the interrupt lines; we reenable them * as subdevices attach. */ frodo_imask(sc, 0, 0xffff); /* Clear any pending interrupts. */ FRODO_WRITE(sc, FRODO_PIC_PU, 0xff); FRODO_WRITE(sc, FRODO_PIC_PL, 0xff); /* Set interrupt polarities... */ FRODO_WRITE(sc, FRODO_PIO_IPR, 0x10); /* ...and configure 1-5 for edge triggering. */ FRODO_WRITE(sc, FRODO_PIO_IELR, 0xc1); /* Initialize IVR high half to zero so we don't need to mask it later */ FRODO_WRITE(sc, FRODO_PIC_IVR, 0x00); /* Mask ISA interrupts until an ISA interrupt handler is registered. */ FRODO_WRITE(sc, FRODO_PIO_ISA_CONTROL, 0x80); /* * We defer hooking up our interrupt handler until * a subdevice hooks up theirs. */ sc->sc_refcnt = 0; /* ... and attach subdevices. */ for (i = 0; frodo_subdevs[i].fa_name != NULL; i++) { /* * Skip the first serial port if we're not a 425e; * it's mapped to the DCA at select code 9 on all * other models. */ if (frodo_subdevs[i].fa_offset == FRODO_APCI_OFFSET(1) && mmuid != MMUID_425_E) continue; frodo_subdevs[i].fa_tag = ia->ia_tag; config_found_sm(self, &frodo_subdevs[i], frodoprint, frodosubmatch); } #if NISABR > 0 /* * Only attempt to attach the isa bridge if it exists on this * machine. */ if (frodo_isa_exists()) { struct frodo_attach_args fa; fa.fa_name = "isabr"; fa.fa_tag = ia->ia_tag; fa.fa_offset = fa.fa_line = 0; config_found_sm(self, &fa, frodoprint, frodosubmatch); } #endif } int frodosubmatch(parent, match, aux) struct device *parent; void *match, *aux; { struct cfdata *cf = match; struct frodo_attach_args *fa = aux; if (cf->frodocf_offset != FRODO_UNKNOWN_OFFSET && cf->frodocf_offset != fa->fa_offset) return (0); return ((*cf->cf_attach->ca_match)(parent, cf, aux)); } int frodoprint(aux, pnp) void *aux; const char *pnp; { struct frodo_attach_args *fa = aux; if (pnp) printf("%s at %s", fa->fa_name, pnp); printf(" offset 0x%x", fa->fa_offset); return (UNCONF); } int frodo_intr_establish(struct device *frdev, int line, struct isr *isr, const char *name) { struct frodo_softc *sc = (struct frodo_softc *)frdev; int priority = isr->isr_priority; if (line <= 0 || line >= FRODO_NINTR) { panic("%s: bad interrupt line %d", sc->sc_dev.dv_xname, line); } if (sc->sc_intr[line] != NULL) { #ifdef DEBUG printf("%s: interrupt line %d already used\n", sc->sc_dev.dv_xname, line); #endif return (EPERM); } /* * If this is the first one, establish the frodo * interrupt handler. If not, reestablish at a * higher priority if necessary. */ if (sc->sc_isr.isr_priority < priority) { if (sc->sc_refcnt != 0) intr_disestablish(&sc->sc_isr); sc->sc_isr.isr_func = frodointr; sc->sc_isr.isr_arg = sc; sc->sc_isr.isr_ipl = FRODO_IPL; sc->sc_isr.isr_priority = priority; intr_establish(&sc->sc_isr, sc->sc_dev.dv_xname); } sc->sc_refcnt++; /* Install the handler. */ isr->isr_ipl = sc->sc_isr.isr_ipl; evcount_attach(&isr->isr_count, name, &isr->isr_ipl); sc->sc_intr[line] = isr; /* Enable the interrupt line. */ frodo_imask(sc, FRODO_INTR_BIT(line), 0); #if NISABR > 0 /* Unmask ISA interrupts if necessary. */ if (FRODO_INTR_ISA(line)) FRODO_WRITE(sc, FRODO_PIO_ISA_CONTROL, 0x00); #endif return (0); } void frodo_intr_disestablish(frdev, line) struct device *frdev; int line; { struct frodo_softc *sc = (struct frodo_softc *)frdev; int newpri; #ifdef DIAGNOSTIC if (sc->sc_intr[line] == NULL) { printf("%s(%s): no handler for line %d", sc->sc_dev.dv_xname, __func__, line); return; } #endif sc->sc_intr[line] = NULL; frodo_imask(sc, 0, FRODO_INTR_BIT(line)); #if NISABR > 0 /* Mask ISA interrupts if necessary. */ if (FRODO_INTR_ISA(line)) { if (sc->sc_intr[FRODO_INTR_ILOW] == NULL && sc->sc_intr[FRODO_INTR_IMID] == NULL && sc->sc_intr[FRODO_INTR_IHI] == NULL) FRODO_WRITE(sc, FRODO_PIO_ISA_CONTROL, 0x80); } #endif /* If this was the last, unhook ourselves. */ if (sc->sc_refcnt-- == 1) { intr_disestablish(&sc->sc_isr); return; } /* Lower our priority, if appropriate. */ for (newpri = 0, line = 0; line < FRODO_NINTR; line++) if (sc->sc_intr[line] != NULL && sc->sc_intr[line]->isr_priority > newpri) newpri = sc->sc_intr[line]->isr_priority; if (newpri != sc->sc_isr.isr_priority) { intr_disestablish(&sc->sc_isr); sc->sc_isr.isr_func = frodointr; sc->sc_isr.isr_arg = sc; sc->sc_isr.isr_ipl = FRODO_IPL; sc->sc_isr.isr_priority = newpri; intr_establish(&sc->sc_isr, sc->sc_dev.dv_xname); } } int frodointr(arg) void *arg; { struct frodo_softc *sc = arg; struct isr *fisr; int pending, line, rc = 0; #ifdef DEBUG frodo_state(sc); #endif /* Any interrupts pending? */ while ((pending = FRODO_GETPEND(sc)) != 0) { rc++; /* * Get pending interrupt; this also clears it for us. */ line = FRODO_READ(sc, FRODO_PIC_ACK) /* & 0x0f */; fisr = sc->sc_intr[line]; if (fisr == NULL) { printf("%s: unhandled interrupt on line %d\n", sc->sc_dev.dv_xname, line); #ifdef DEBUG /* Disable interrupt source */ frodo_imask(sc, 0, FRODO_INTR_BIT(line)); #endif } else { if ((*fisr->isr_func)(fisr->isr_arg) != 0) { fisr->isr_count.ec_count++; } else { printf("%s: spurious interrupt on line %d\n", sc->sc_dev.dv_xname, line); } } if (rc > 100) panic("frodointr: looping, pending %x line %d fisr %p", pending, line, fisr); #ifdef DEBUG frodo_state(sc); #endif } return (rc); } void frodo_imask(sc, set, clear) struct frodo_softc *sc; u_int16_t set, clear; { u_int16_t imask; imask = FRODO_GETMASK(sc); imask |= set; imask &= ~clear; FRODO_SETMASK(sc, imask); } #ifdef DEBUG void frodo_state(struct frodo_softc *sc) { int i; printf("%s state:", sc->sc_dev.dv_xname); for (i = 0xc0; i < 0x100; i += 4) { printf(" %02x", FRODO_READ(sc, i)); if (i == 0xcc || i == 0xdc || i == 0xec) printf(" /"); } printf("\n"); } #endif #if NISABR > 0 int frodo_isa_exists() { vaddr_t va; int rv; va = uvm_km_valloc(kernel_map, PAGE_SIZE); if (va == NULL) return (0); /* * Check that the iomem space answers probes */ pmap_kenter_cache(va, ISABR_IOMEM_BASE, PG_RW | PG_CI); pmap_update(pmap_kernel()); rv = badbaddr((caddr_t)va); pmap_kremove(va, PAGE_SIZE); pmap_update(pmap_kernel()); /* * Check that the ioport space answers probes */ pmap_kenter_cache(va, ISABR_IOPORT_BASE, PG_RW | PG_CI); pmap_update(pmap_kernel()); rv |= badbaddr((caddr_t)va); pmap_kremove(va, PAGE_SIZE); pmap_update(pmap_kernel()); uvm_km_free(kernel_map, va, PAGE_SIZE); return (!rv); } #endif