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/*- * Copyright (c) 2004 Jason L. Wright (jason@thought.net) * Copyright (c) 2005 Marius Strobl <marius@FreeBSD.org> * 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 ``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. * * from: OpenBSD: clkbrd.c,v 1.5 2004/10/01 18:18:49 jason Exp */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/sparc64/fhc/clkbrd.c 157225 2006-03-28 19:46:48Z marius $"); #include <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/module.h> #include <sys/resource.h> #include <sys/rman.h> #include <dev/led/led.h> #include <dev/ofw/ofw_bus.h> #include <machine/bus.h> #include <machine/resource.h> #include <sparc64/fhc/clkbrdreg.h> #define CLKBRD_NREG 3 #define CLKBRD_CF 0 #define CLKBRD_CLK 1 #define CLKBRD_CLKVER 2 struct clkbrd_softc { struct device *sc_dev; struct resource *sc_res[CLKBRD_NREG]; int sc_rid[CLKBRD_NREG]; bus_space_tag_t sc_bt[CLKBRD_NREG]; bus_space_handle_t sc_bh[CLKBRD_NREG]; uint8_t sc_clk_ctrl; struct cdev *sc_led_dev; int sc_flags; #define CLKBRD_HAS_CLKVER (1 << 0) }; static devclass_t clkbrd_devclass; static device_probe_t clkbrd_probe; static device_attach_t clkbrd_attach; static device_detach_t clkbrd_detach; static void clkbrd_free_resources(struct clkbrd_softc *); static void clkbrd_led_func(void *, int); static device_method_t clkbrd_methods[] = { /* Device interface */ DEVMETHOD(device_probe, clkbrd_probe), DEVMETHOD(device_attach, clkbrd_attach), DEVMETHOD(device_detach, clkbrd_detach), { 0, 0 } }; static driver_t clkbrd_driver = { "clkbrd", clkbrd_methods, sizeof(struct clkbrd_softc), }; DRIVER_MODULE(clkbrd, fhc, clkbrd_driver, clkbrd_devclass, 0, 0); static int clkbrd_probe(device_t dev) { if (strcmp(ofw_bus_get_name(dev), "clock-board") == 0) { device_set_desc(dev, "Clock Board"); return (0); } return (ENXIO); } static int clkbrd_attach(device_t dev) { struct clkbrd_softc *sc; int i, slots; uint8_t r; sc = device_get_softc(dev); sc->sc_dev = dev; for (i = CLKBRD_CF; i <= CLKBRD_CLKVER; i++) { sc->sc_rid[i] = i; sc->sc_res[i] = bus_alloc_resource_any(sc->sc_dev, SYS_RES_MEMORY, &sc->sc_rid[i], RF_ACTIVE); if (sc->sc_res[i] == NULL) { if (i != CLKBRD_CLKVER) { device_printf(sc->sc_dev, "could not allocate resource %d\n", i); goto fail; } continue; } sc->sc_bt[i] = rman_get_bustag(sc->sc_res[i]); sc->sc_bh[i] = rman_get_bushandle(sc->sc_res[i]); if (i == CLKBRD_CLKVER) sc->sc_flags |= CLKBRD_HAS_CLKVER; } slots = 4; r = bus_space_read_1(sc->sc_bt[CLKBRD_CLK], sc->sc_bh[CLKBRD_CLK], CLK_STS1); switch (r & CLK_STS1_SLOTS_MASK) { case CLK_STS1_SLOTS_16: slots = 16; break; case CLK_STS1_SLOTS_8: slots = 8; break; case CLK_STS1_SLOTS_4: if (sc->sc_flags & CLKBRD_HAS_CLKVER) { r = bus_space_read_1(sc->sc_bt[CLKBRD_CLKVER], sc->sc_bh[CLKBRD_CLKVER], CLKVER_SLOTS); if (r != 0 && (r & CLKVER_SLOTS_MASK) == CLKVER_SLOTS_PLUS) slots = 5; } } device_printf(sc->sc_dev, "Sun Enterprise Exx00 machine: %d slots\n", slots); sc->sc_clk_ctrl = bus_space_read_1(sc->sc_bt[CLKBRD_CLK], sc->sc_bh[CLKBRD_CLK], CLK_CTRL); sc->sc_led_dev = led_create(clkbrd_led_func, sc, "clockboard"); return (0); fail: clkbrd_free_resources(sc); return (ENXIO); } static int clkbrd_detach(device_t dev) { struct clkbrd_softc *sc; sc = device_get_softc(dev); led_destroy(sc->sc_led_dev); bus_space_write_1(sc->sc_bt[CLKBRD_CLK], sc->sc_bh[CLKBRD_CLK], CLK_CTRL, sc->sc_clk_ctrl); bus_space_read_1(sc->sc_bt[CLKBRD_CLK], sc->sc_bh[CLKBRD_CLK], CLK_CTRL); clkbrd_free_resources(sc); return (0); } static void clkbrd_free_resources(struct clkbrd_softc *sc) { int i; for (i = CLKBRD_CF; i <= CLKBRD_CLKVER; i++) if (sc->sc_res[i] != NULL) bus_release_resource(sc->sc_dev, SYS_RES_MEMORY, sc->sc_rid[i], sc->sc_res[i]); } static void clkbrd_led_func(void *arg, int onoff) { struct clkbrd_softc *sc; uint8_t r; sc = (struct clkbrd_softc *)arg; r = bus_space_read_1(sc->sc_bt[CLKBRD_CLK], sc->sc_bh[CLKBRD_CLK], CLK_CTRL); if (onoff) r |= CLK_CTRL_RLED; else r &= ~CLK_CTRL_RLED; bus_space_write_1(sc->sc_bt[CLKBRD_CLK], sc->sc_bh[CLKBRD_CLK], CLK_CTRL, r); bus_space_read_1(sc->sc_bt[CLKBRD_CLK], sc->sc_bh[CLKBRD_CLK], CLK_CTRL); }