/* $NetBSD: ioc.c,v 1.11 2015/02/18 16:47:58 macallan Exp $ */ /* * Copyright (c) 2003 Christopher Sekiya * 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 for the * NetBSD Project. See http://www.NetBSD.org/ for * information about NetBSD. * 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. */ /* * ip20/22/24 I/O Controller (IOC) */ #include __KERNEL_RCSID(0, "$NetBSD: ioc.c,v 1.11 2015/02/18 16:47:58 macallan Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "locators.h" struct ioc_softc { bus_space_tag_t sc_iot; bus_space_handle_t sc_ioh; }; static int ioc_match(device_t, cfdata_t, void *); static void ioc_attach(device_t, device_t, void *); #if defined(notyet) static int ioc_print(void *, const char *); static int ioc_search(device_t, cfdata_t, const int *, void *); #endif CFATTACH_DECL_NEW(ioc, sizeof(struct ioc_softc), ioc_match, ioc_attach, NULL, NULL); #if defined(BLINK) static callout_t ioc_blink_ch; static void ioc_blink(void *); #endif static int ioc_match(device_t parent, cfdata_t match, void *aux) { if (mach_type == MACH_SGI_IP22) return 1; return 0; } static void ioc_attach(device_t parent, device_t self, void *aux) { struct ioc_softc *sc = device_private(self); struct mainbus_attach_args *maa = aux; u_int32_t sysid; #ifdef BLINK callout_init(&ioc_blink_ch, 0); #endif sc->sc_iot = normal_memt; if (bus_space_map(sc->sc_iot, maa->ma_addr, 0x100, BUS_SPACE_MAP_LINEAR, &sc->sc_ioh)) panic("ioc_attach: could not allocate memory\n"); sysid = bus_space_read_4(sc->sc_iot, sc->sc_ioh, IOC_SYSID) & 0x01; if (sysid) mach_subtype = MACH_SGI_IP22_FULLHOUSE; else mach_subtype = MACH_SGI_IP22_GUINNESS; aprint_normal(": rev %d, machine %s, board rev %d\n", ((sysid & IOC_SYSID_CHIPREV) >> IOC_SYSID_CHIPREV_SHIFT), (sysid & IOC_SYSID_SYSTYPE) ? "Indigo2 (Fullhouse)" : "Indy (Guinness)", ((sysid & IOC_SYSID_BOARDREV) >> IOC_SYSID_BOARDREV_SHIFT)); /* Reset IOC */ bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_RESET, IOC_RESET_PARALLEL | IOC_RESET_PCKBC | IOC_RESET_EISA | IOC_RESET_ISDN | IOC_RESET_LED_GREEN ); /* * Set the 10BaseT port to use UTP cable, set autoselect mode for * the ethernet interface (AUI vs. TP), set the two serial ports * to PC mode. */ bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_WRITE, IOC_WRITE_ENET_AUTO | IOC_WRITE_ENET_UTP | IOC_WRITE_PC_UART2 | IOC_WRITE_PC_UART1); /* XXX: the firmware should have taken care of this already */ #if 0 if (mach_subtype == MACH_SGI_IP22_GUINNESS) { bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_GCSEL, 0xff); bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_GCREG, 0xff); } #endif #if defined(BLINK) ioc_blink(sc); #endif #if defined(notyet) /* * pckbc, zstty, and lpt should attach under the IOC. This begs the * question of how we sort things out with ip20, which has no IOC. * For now, we pretend that everything attaches at HPC and ignore * the IOC. */ config_search_ia(ioc_search, self, "ioc", NULL); #endif } #if defined(notyet) static int ioc_print(void *aux, const char *pnp) { struct ioc_attach_args *iaa = aux; if (pnp != 0) return QUIET; if (iaa->iaa_offset != IOCCF_OFFSET_DEFAULT) aprint_normal(" offset 0x%lx", iaa->iaa_offset); if (iaa->iaa_intr != IOCCF_INTR_DEFAULT) aprint_normal(" intr %d", iaa->iaa_intr); return UNCONF; } static int ioc_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux) { struct ioc_softc *sc = device_private(parent); struct ioc_attach_args iaa; int tryagain; do { iaa.iaa_offset = cf->cf_loc[IOCCF_OFFSET]; iaa.iaa_intr = cf->cf_loc[IOCCF_INTR]; iaa.iaa_st = normal_memt; iaa.iaa_sh = sc->sc_ioh; /* XXX */ tryagain = 0; if (config_match(parent, cf, &iaa) > 0) { config_attach(parent, cf, &iaa, ioc_print); tryagain = (cf->cf_fstate == FSTATE_STAR); } } while (tryagain); return 0; } #endif #if defined(BLINK) static void ioc_blink(void *self) { struct ioc_softc *sc = device_private(self); register int s; int value; s = splhigh(); /* This is a bit odd. To strobe the green LED, we have to toggle the red control bit. */ value = bus_space_read_4(sc->sc_iot, sc->sc_ioh, IOC_RESET) & 0xff; value ^= IOC_RESET_LED_RED; bus_space_write_4(sc->sc_iot, sc->sc_ioh, IOC_RESET, value); splx(s); /* * Blink rate is: * full cycle every second if completely idle (loadav = 0) * full cycle every 2 seconds if loadav = 1 * full cycle every 3 seconds if loadav = 2 * etc. */ s = (((averunnable.ldavg[0] + FSCALE) * hz) >> (FSHIFT + 1)); callout_reset(&ioc_blink_ch, s, ioc_blink, sc); } #endif