/* $OpenBSD: ioasic.c,v 1.19 2022/03/13 08:04:13 mpi Exp $ */ /* $NetBSD: ioasic.c,v 1.34 2000/07/18 06:10:06 thorpej Exp $ */ /*- * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center. * * 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) 1994, 1995, 1996 Carnegie-Mellon University. * All rights reserved. * * Author: Keith Bostic, Chris G. Demetriou * * Permission to use, copy, modify and distribute this software and * its documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef DEC_3000_300 #include #endif /* Definition of the driver for autoconfig. */ int ioasicmatch(struct device *, void *, void *); void ioasicattach(struct device *, struct device *, void *); const struct cfattach ioasic_ca = { sizeof(struct ioasic_softc), ioasicmatch, ioasicattach, }; struct cfdriver ioasic_cd = { NULL, "ioasic", DV_DULL, }; int ioasic_intr(void *); int ioasic_intrnull(void *); void ioasic_led_blink(void *); #define C(x) ((void *)(u_long)(x)) #define KV(x) (ALPHA_PHYS_TO_K0SEG(x)) #define IOASIC_DEV_LANCE 0 #define IOASIC_DEV_SCC0 1 #define IOASIC_DEV_SCC1 2 #define IOASIC_DEV_ISDN 3 #define IOASIC_DEV_BOGUS -1 #define IOASIC_NCOOKIES 4 struct ioasic_dev ioasic_devs[] = { { "PMAD-BA ", IOASIC_SLOT_3_START, C(IOASIC_DEV_LANCE), IOASIC_INTR_LANCE, }, { "z8530 ", IOASIC_SLOT_4_START, C(IOASIC_DEV_SCC0), IOASIC_INTR_SCC_0, }, { "z8530 ", IOASIC_SLOT_6_START, C(IOASIC_DEV_SCC1), IOASIC_INTR_SCC_1, }, { "TOY_RTC ", IOASIC_SLOT_8_START, C(IOASIC_DEV_BOGUS), 0, }, { "AMD79c30", IOASIC_SLOT_9_START, C(IOASIC_DEV_ISDN), IOASIC_INTR_ISDN_TXLOAD | IOASIC_INTR_ISDN_RXLOAD, }, }; int ioasic_ndevs = sizeof(ioasic_devs) / sizeof(ioasic_devs[0]); struct ioasicintr { int (*iai_func)(void *); void *iai_arg; struct evcount iai_count; } ioasicintrs[IOASIC_NCOOKIES]; tc_addr_t ioasic_base; /* XXX XXX XXX */ /* There can be only one. */ int ioasicfound; int ioasicmatch(parent, cfdata, aux) struct device *parent; void *cfdata, *aux; { struct tc_attach_args *ta = aux; /* Make sure that we're looking for this type of device. */ if (strncmp("FLAMG-IO", ta->ta_modname, TC_ROM_LLEN)) return (0); /* Check that it can actually exist. */ if ((cputype != ST_DEC_3000_500) && (cputype != ST_DEC_3000_300)) panic("ioasicmatch: how did we get here?"); if (ioasicfound) return (0); return (1); } void ioasicattach(parent, self, aux) struct device *parent, *self; void *aux; { struct ioasic_softc *sc = (struct ioasic_softc *)self; struct tc_attach_args *ta = aux; #ifdef DEC_3000_300 u_long ssr; #endif u_long i, imsk; ioasicfound = 1; sc->sc_bst = ta->ta_memt; if (bus_space_map(ta->ta_memt, ta->ta_addr, 0x400000, 0, &sc->sc_bsh)) { printf("%s: unable to map device\n", sc->sc_dv.dv_xname); return; } sc->sc_dmat = ta->ta_dmat; ioasic_base = sc->sc_base = ta->ta_addr; /* XXX XXX XXX */ #ifdef DEC_3000_300 if (cputype == ST_DEC_3000_300) { ssr = bus_space_read_4(sc->sc_bst, sc->sc_bsh, IOASIC_CSR); ssr |= IOASIC_CSR_FASTMODE; bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_CSR, ssr); printf(": slow mode\n"); } else #endif printf(": fast mode\n"); /* * Turn off all device interrupt bits. * (This does _not_ include 3000/300 TC option slot bits). */ imsk = bus_space_read_4(sc->sc_bst, sc->sc_bsh, IOASIC_IMSK); for (i = 0; i < ioasic_ndevs; i++) imsk &= ~ioasic_devs[i].iad_intrbits; bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_IMSK, imsk); /* * Set up interrupt handlers. */ for (i = 0; i < IOASIC_NCOOKIES; i++) { ioasicintrs[i].iai_func = ioasic_intrnull; ioasicintrs[i].iai_arg = (void *)i; } tc_intr_establish(parent, ta->ta_cookie, IPL_NONE, ioasic_intr, sc, NULL); /* * Try to configure each device. */ ioasic_attach_devs(sc, ioasic_devs, ioasic_ndevs); ioasic_led_blink(NULL); } void ioasic_intr_establish(ioa, cookie, level, func, arg, name) struct device *ioa; void *cookie, *arg; int level; int (*func)(void *); const char *name; { struct ioasic_softc *sc = (void *)ioasic_cd.cd_devs[0]; u_long dev, i, imsk; dev = (u_long)cookie; #ifdef DIAGNOSTIC /* XXX check cookie. */ #endif if (ioasicintrs[dev].iai_func != ioasic_intrnull) panic("ioasic_intr_establish: cookie %lu twice", dev); ioasicintrs[dev].iai_func = func; ioasicintrs[dev].iai_arg = arg; evcount_attach(&ioasicintrs[dev].iai_count, name, NULL); /* Enable interrupts for the device. */ for (i = 0; i < ioasic_ndevs; i++) if (ioasic_devs[i].iad_cookie == cookie) break; if (i == ioasic_ndevs) panic("ioasic_intr_establish: invalid cookie."); imsk = bus_space_read_4(sc->sc_bst, sc->sc_bsh, IOASIC_IMSK); imsk |= ioasic_devs[i].iad_intrbits; bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_IMSK, imsk); } void ioasic_intr_disestablish(ioa, cookie) struct device *ioa; void *cookie; { struct ioasic_softc *sc = (void *)ioasic_cd.cd_devs[0]; u_long dev, i, imsk; dev = (u_long)cookie; #ifdef DIAGNOSTIC /* XXX check cookie. */ #endif if (ioasicintrs[dev].iai_func == ioasic_intrnull) panic("ioasic_intr_disestablish: cookie %lu missing intr", dev); /* Enable interrupts for the device. */ for (i = 0; i < ioasic_ndevs; i++) if (ioasic_devs[i].iad_cookie == cookie) break; if (i == ioasic_ndevs) panic("ioasic_intr_disestablish: invalid cookie."); imsk = bus_space_read_4(sc->sc_bst, sc->sc_bsh, IOASIC_IMSK); imsk &= ~ioasic_devs[i].iad_intrbits; bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_IMSK, imsk); ioasicintrs[dev].iai_func = ioasic_intrnull; ioasicintrs[dev].iai_arg = (void *)dev; evcount_detach(&ioasicintrs[dev].iai_count); } int ioasic_intrnull(val) void *val; { panic("ioasic_intrnull: uncaught IOASIC intr for cookie %ld", (u_long)val); } /* * ASIC interrupt handler. */ int ioasic_intr(val) void *val; { register struct ioasic_softc *sc = val; register int ifound; int gifound; u_int32_t sir, osir; gifound = 0; do { ifound = 0; tc_syncbus(); osir = sir = bus_space_read_4(sc->sc_bst, sc->sc_bsh, IOASIC_INTR); /* XXX DUPLICATION OF INTERRUPT BIT INFORMATION... */ #define CHECKINTR(slot, bits, clear) \ if (sir & (bits)) { \ ifound = 1; \ ioasicintrs[slot].iai_count.ec_count++; \ (*ioasicintrs[slot].iai_func) \ (ioasicintrs[slot].iai_arg); \ if (clear) \ sir &= ~(bits); \ } CHECKINTR(IOASIC_DEV_SCC0, IOASIC_INTR_SCC_0, 0); CHECKINTR(IOASIC_DEV_SCC1, IOASIC_INTR_SCC_1, 0); CHECKINTR(IOASIC_DEV_LANCE, IOASIC_INTR_LANCE, 0); CHECKINTR(IOASIC_DEV_ISDN, IOASIC_INTR_ISDN_TXLOAD | IOASIC_INTR_ISDN_RXLOAD | IOASIC_INTR_ISDN_OVRUN, 1); if (sir != osir) bus_space_write_4(sc->sc_bst, sc->sc_bsh, IOASIC_INTR, sir); gifound |= ifound; } while (ifound); return (gifound); } /* * Blink leds */ struct { int patpos; struct timeout tmo; } led_blink_state; static const uint8_t led_pattern8[] = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02 }; void ioasic_led_blink(void *unused) { extern int alpha_led_blink; /* machdep.c */ vaddr_t rw_csr; u_int32_t pattern; int display_loadavg; if (alpha_led_blink == 0) { pattern = 0; /* all clear */ led_blink_state.patpos = 0; } else { #ifdef DEC_3000_300 if (cputype == ST_DEC_3000_300) display_loadavg = 0; else #endif switch (hwrpb->rpb_variation & SV_ST_MASK) { case SV_ST_FLAMINGO: case SV_ST_HOTPINK: case SV_ST_FLAMINGOPLUS: case SV_ST_ULTRA: case SV_ST_FLAMINGO45: /* 500/800/900, 2 7-segment display, display loadavg */ display_loadavg = 1; break; case SV_ST_SANDPIPER: case SV_ST_SANDPLUS: case SV_ST_SANDPIPER45: default: /* 400/600/700, 8 leds, display moving pattern */ display_loadavg = 0; break; } if (display_loadavg) pattern = averunnable.ldavg[0] >> FSHIFT; else { pattern = led_pattern8[led_blink_state.patpos]; led_blink_state.patpos = (led_blink_state.patpos + 1) % sizeof(led_pattern8); } } /* * The low 8 bits, controlling the leds, are read-only in the * CSR register, but read-write in its image at CSR + 4. * * On model 300, however, the internal 8 leds are at a different * address, but the (better visible) power supply led is actually * bit 5 in CSR (active low). */ #ifdef DEC_3000_300 if (cputype == ST_DEC_3000_300) { rw_csr = KV(0x1a0000000 + IOASIC_CSR + 4); *(volatile uint32_t *)TC_3000_300_LED = (*(volatile uint32_t *)TC_3000_300_LED & ~(0xff << 16)) | (pattern << 16); /* * Blink the power supply led 8x slower. This relies * on led_pattern8[] being a < 16 element array. */ *(volatile uint32_t *)rw_csr = (*(volatile uint32_t *)rw_csr & ~(1 << 5)) ^ ((led_blink_state.patpos >> 3) << 5); } else #endif { rw_csr = KV(0x1e0000000 + IOASIC_CSR + 4); *(volatile uint32_t *)rw_csr = (*(volatile uint32_t *)rw_csr & ~0xff) | pattern; } if (alpha_led_blink != 0) { timeout_set(&led_blink_state.tmo, ioasic_led_blink, NULL); timeout_add(&led_blink_state.tmo, (((averunnable.ldavg[0] + FSCALE) * hz) >> (FSHIFT + 3))); } }