/* $NetBSD: frodo.c,v 1.32 2014/04/30 15:53:09 tsutsui 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 9000/382 controllers. */ #include __KERNEL_RCSID(0, "$NetBSD: frodo.c,v 1.32 2014/04/30 15:53:09 tsutsui Exp $"); #define _HP300_INTR_H_PRIVATE #include #include #include #include #include #include #include #include #include #include #include #include /* * Description of a Frodo interrupt handler. */ struct frodo_interhand { int (*ih_fn)(void *); void *ih_arg; int ih_priority; }; struct frodo_softc { device_t sc_dev; /* generic device glue */ volatile uint8_t *sc_regs; /* register base */ struct frodo_interhand sc_intr[FRODO_NINTR]; /* interrupt handlers */ int sc_ipl; void *sc_ih; /* out interrupt cookie */ int sc_refcnt; /* number of interrupt refs */ struct bus_space_tag sc_tag; /* bus space tag */ }; static int frodomatch(device_t, cfdata_t, void *); static void frodoattach(device_t, device_t, void *); static int frodoprint(void *, const char *); static int frodosubmatch(device_t, cfdata_t, const int *, void *); static int frodointr(void *); static void frodo_imask(struct frodo_softc *, uint16_t, uint16_t); CFATTACH_DECL_NEW(frodo, sizeof(struct frodo_softc), frodomatch, frodoattach, NULL, NULL); static const struct frodo_device frodo_subdevs[] = { { "dnkbd", FRODO_APCI_OFFSET(0), FRODO_INTR_APCI0 }, { "com", FRODO_APCI_OFFSET(1), FRODO_INTR_APCI1 }, { "com", FRODO_APCI_OFFSET(2), FRODO_INTR_APCI2 }, { "com", FRODO_APCI_OFFSET(3), FRODO_INTR_APCI3 }, { "mcclock", FRODO_CALENDAR, FRODO_INTR_CALENDAR }, { NULL, 0, 0 } }; static int frodomatch(device_t parent, cfdata_t cf, void *aux) { struct intio_attach_args *ia = aux; static int frodo_matched = 0; /* only allow one instance */ if (frodo_matched) return 0; if (strcmp(ia->ia_modname, "frodo") != 0) return 0; if (badaddr((void *)ia->ia_addr)) return 0; frodo_matched = 1; return 1; } static void frodoattach(device_t parent, device_t self, void *aux) { struct frodo_softc *sc = device_private(self); struct intio_attach_args *ia = aux; bus_space_tag_t bst = &sc->sc_tag; const struct frodo_device *fd; struct frodo_attach_args fa; sc->sc_dev = self; sc->sc_regs = (volatile uint8_t *)ia->ia_addr; sc->sc_ipl = ia->ia_ipl; if ((FRODO_READ(sc, FRODO_IISR) & FRODO_IISR_SERVICE) == 0) aprint_error(": service mode enabled"); aprint_normal("\n"); /* Initialize bus_space_tag_t for frodo */ frodo_init_bus_space(bst); /* Clear all of the interrupt handlers. */ memset(sc->sc_intr, 0, sizeof(sc->sc_intr)); sc->sc_refcnt = 0; /* * 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 for edge triggering. */ FRODO_WRITE(sc, FRODO_PIO_IELR, 0xcf); /* * We defer hooking up our interrupt handler until * a subdevice hooks up theirs. */ sc->sc_ih = NULL; /* ... and attach subdevices. */ for (fd = frodo_subdevs; fd->fd_name != NULL; fd++) { /* * 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 (fd->fd_offset == FRODO_APCI_OFFSET(1) && mmuid != MMUID_425_E) continue; /* * The mcclock is available only on a 425e. */ if (fd->fd_offset == FRODO_CALENDAR && mmuid != MMUID_425_E) continue; fa.fa_name = fd->fd_name; fa.fa_bst = bst; fa.fa_base = ia->ia_iobase; fa.fa_offset = fd->fd_offset; fa.fa_line = fd->fd_line; config_found_sm_loc(self, "frodo", NULL, &fa, frodoprint, frodosubmatch); } } static int frodosubmatch(device_t parent, cfdata_t cf, const int *ldesc, void *aux) { struct frodo_attach_args *fa = aux; if (cf->frodocf_offset != FRODO_UNKNOWN_OFFSET && cf->frodocf_offset != fa->fa_offset) return 0; return config_match(parent, cf, aux); } static int frodoprint(void *aux, const char *pnp) { struct frodo_attach_args *fa = aux; if (pnp) aprint_normal("%s at %s", fa->fa_name, pnp); aprint_normal(" offset 0x%x", fa->fa_offset); return UNCONF; } void frodo_intr_establish(device_t frdev, int (*func)(void *), void *arg, int line, int priority) { struct frodo_softc *sc = device_private(frdev); struct hp300_intrhand *ih = sc->sc_ih; if (line < 0 || line >= FRODO_NINTR) { aprint_error_dev(frdev, "bad interrupt line %d\n", line); goto lose; } if (sc->sc_intr[line].ih_fn != NULL) { aprint_error_dev(frdev, "interrupt line %d already used\n", line); goto lose; } /* Install the handler. */ sc->sc_intr[line].ih_fn = func; sc->sc_intr[line].ih_arg = arg; sc->sc_intr[line].ih_priority = priority; /* * If this is the first one, establish the frodo * interrupt handler. If not, reestablish at a * higher priority if necessary. */ if (ih == NULL || ih->ih_priority < priority) { if (ih != NULL) intr_disestablish(ih); sc->sc_ih = intr_establish(frodointr, sc, sc->sc_ipl, priority); } sc->sc_refcnt++; /* Enable the interrupt line. */ frodo_imask(sc, (1 << line), 0); return; lose: panic("frodo_intr_establish"); } void frodo_intr_disestablish(device_t frdev, int line) { struct frodo_softc *sc = device_private(frdev); struct hp300_intrhand *ih = sc->sc_ih; int newpri; if (sc->sc_intr[line].ih_fn == NULL) { printf("%s: no handler for line %d\n", device_xname(sc->sc_dev), line); panic("frodo_intr_disestablish"); } sc->sc_intr[line].ih_fn = NULL; frodo_imask(sc, 0, (1 << line)); /* If this was the last, unhook ourselves. */ if (sc->sc_refcnt-- == 1) { intr_disestablish(ih); return; } /* Lower our priority, if appropriate. */ for (newpri = 0, line = 0; line < FRODO_NINTR; line++) if (sc->sc_intr[line].ih_fn != NULL && sc->sc_intr[line].ih_priority > newpri) newpri = sc->sc_intr[line].ih_priority; if (newpri != ih->ih_priority) { intr_disestablish(ih); sc->sc_ih = intr_establish(frodointr, sc, sc->sc_ipl, newpri); } } static int frodointr(void *arg) { struct frodo_softc *sc = arg; struct frodo_interhand *fih; int line, taken = 0; /* Any interrupts pending? */ if (FRODO_GETPEND(sc) == 0) return 0; do { /* * Get pending interrupt; this also clears it for us. */ line = FRODO_IPEND(sc); fih = &sc->sc_intr[line]; if (fih->ih_fn == NULL || (*fih->ih_fn)(fih->ih_arg) == 0) printf("%s: spurious interrupt on line %d\n", device_xname(sc->sc_dev), line); if (taken++ > 100) panic("frodointr: looping!"); } while (FRODO_GETPEND(sc) != 0); return 1; } static void frodo_imask(struct frodo_softc *sc, uint16_t set, uint16_t clear) { uint16_t imask; imask = FRODO_GETMASK(sc); imask |= set; imask &= ~clear; FRODO_SETMASK(sc, imask); } /* * frodo chip specific bus_space(9) support functions. */ static uint8_t frodo_bus_space_read_sparse_1(bus_space_tag_t, bus_space_handle_t, bus_size_t); static void frodo_bus_space_write_sparse_1(bus_space_tag_t, bus_space_handle_t, bus_size_t, uint8_t); static void frodo_bus_space_read_multi_sparse_1(bus_space_tag_t, bus_space_handle_t, bus_size_t, uint8_t *, bus_size_t); static void frodo_bus_space_write_multi_sparse_1(bus_space_tag_t, bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t); static void frodo_bus_space_read_region_sparse_1(bus_space_tag_t, bus_space_handle_t, bus_size_t, uint8_t *, bus_size_t); static void frodo_bus_space_write_region_sparse_1(bus_space_tag_t, bus_space_handle_t, bus_size_t, const uint8_t *, bus_size_t); static void frodo_bus_space_set_multi_sparse_1(bus_space_tag_t, bus_space_handle_t, bus_size_t, uint8_t, bus_size_t); static void frodo_bus_space_set_region_sparse_1(bus_space_tag_t, bus_space_handle_t, bus_size_t, uint8_t, bus_size_t); /* * frodo_init_bus_space(): * Initialize bus_space functions in bus_space_tag_t * for frodo devices which have sparse address space. */ void frodo_init_bus_space(bus_space_tag_t bst) { memset(bst, 0, sizeof(struct bus_space_tag)); bst->bustype = HP300_BUS_SPACE_INTIO; bst->bsr1 = frodo_bus_space_read_sparse_1; bst->bsw1 = frodo_bus_space_write_sparse_1; bst->bsrm1 = frodo_bus_space_read_multi_sparse_1; bst->bswm1 = frodo_bus_space_write_multi_sparse_1; bst->bsrr1 = frodo_bus_space_read_region_sparse_1; bst->bswr1 = frodo_bus_space_write_region_sparse_1; bst->bssm1 = frodo_bus_space_set_multi_sparse_1; bst->bssr1 = frodo_bus_space_set_region_sparse_1; } static uint8_t frodo_bus_space_read_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t offset) { return *(volatile uint8_t *)(bsh + (offset << 2)); } static void frodo_bus_space_write_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t offset, uint8_t val) { *(volatile uint8_t *)(bsh + (offset << 2)) = val; } static void frodo_bus_space_read_multi_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t offset, uint8_t *addr, bus_size_t len) { __asm volatile ( " movl %0,%%a0 ;\n" " movl %1,%%a1 ;\n" " movl %2,%%d0 ;\n" "1: movb %%a0@,%%a1@+ ;\n" " subql #1,%%d0 ;\n" " jne 1b" : : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) : "%a0","%a1","%d0"); } static void frodo_bus_space_write_multi_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t offset, const uint8_t *addr, bus_size_t len) { __asm volatile ( " movl %0,%%a0 ;\n" " movl %1,%%a1 ;\n" " movl %2,%%d0 ;\n" "1: movb %%a1@+,%%a0@ ;\n" " subql #1,%%d0 ;\n" " jne 1b" : : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) : "%a0","%a1","%d0"); } static void frodo_bus_space_read_region_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t offset, uint8_t *addr, bus_size_t len) { __asm volatile ( " movl %0,%%a0 ;\n" " movl %1,%%a1 ;\n" " movl %2,%%d0 ;\n" "1: movb %%a0@,%%a1@+ ;\n" " addql #4,%%a0 ;\n" " subql #1,%%d0 ;\n" " jne 1b" : : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) : "%a0","%a1","%d0"); } static void frodo_bus_space_write_region_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t offset, const uint8_t *addr, bus_size_t len) { __asm volatile ( " movl %0,%%a0 ;\n" " movl %1,%%a1 ;\n" " movl %2,%%d0 ;\n" "1: movb %%a1@+,%%a0@ ;\n" " addql #4,%%a0 ;\n" " subql #1,%%d0 ;\n" " jne 1b" : : "r" (bsh + (offset << 2)), "g" (addr), "g" (len) : "%a0","%a1","%d0"); } static void frodo_bus_space_set_multi_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t offset, uint8_t val, bus_size_t count) { __asm volatile ( " movl %0,%%a0 ;\n" " movl %1,%%d1 ;\n" " movl %2,%%d0 ;\n" "1: movb %%d1,%%a0@ ;\n" " subql #1,%%d0 ;\n" " jne 1b" : : "r" (bsh + (offset << 2)), "g" (val), "g" (count) : "%a0","%d0","%d1"); } static void frodo_bus_space_set_region_sparse_1(bus_space_tag_t bst, bus_space_handle_t bsh, bus_size_t offset, uint8_t val, bus_size_t count) { __asm volatile ( " movl %0,%%a0 ;\n" " movl %1,%%d1 ;\n" " movl %2,%%d0 ;\n" "1: movb %%d1,%%a0@ ;\n" " addql #4,%%a0 ;\n" " subql #1,%%d0 ;\n" " jne 1b" : : "r" (bsh + (offset << 2)), "g" (val), "g" (count) : "%a0","%d0","%d1"); }