Current Path : /sys/dev/fdt/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/dev/fdt/simplebus.c |
/*- * Copyright (c) 2009-2010 The FreeBSD Foundation * All rights reserved. * * This software was developed by Semihalf under sponsorship from * the FreeBSD Foundation. * * 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. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD: release/9.1.0/sys/dev/fdt/simplebus.c 209904 2010-07-11 20:30:59Z raj $"); #include "opt_platform.h" #include <sys/param.h> #include <sys/systm.h> #include <sys/ktr.h> #include <sys/kernel.h> #include <sys/module.h> #include <sys/bus.h> #include <sys/rman.h> #include <sys/malloc.h> #include <machine/fdt.h> #include <dev/ofw/ofw_bus.h> #include <dev/ofw/ofw_bus_subr.h> #include <dev/ofw/openfirm.h> #include "fdt_common.h" #include "ofw_bus_if.h" #define DEBUG #undef DEBUG #ifdef DEBUG #define debugf(fmt, args...) do { printf("%s(): ", __func__); \ printf(fmt,##args); } while (0) #else #define debugf(fmt, args...) #endif static MALLOC_DEFINE(M_SIMPLEBUS, "simplebus", "simplebus devices information"); struct simplebus_softc { int sc_addr_cells; int sc_size_cells; u_long sc_start_pa; u_long sc_start_va; u_long sc_size; }; struct simplebus_devinfo { struct ofw_bus_devinfo di_ofw; struct resource_list di_res; /* Interrupts sense-level info for this device */ struct fdt_sense_level di_intr_sl[DI_MAX_INTR_NUM]; }; /* * Prototypes. */ static int simplebus_probe(device_t); static int simplebus_attach(device_t); static int simplebus_print_child(device_t, device_t); static int simplebus_setup_intr(device_t, device_t, struct resource *, int, driver_filter_t *, driver_intr_t *, void *, void **); static struct resource *simplebus_alloc_resource(device_t, device_t, int, int *, u_long, u_long, u_long, u_int); static struct resource_list *simplebus_get_resource_list(device_t, device_t); static ofw_bus_get_devinfo_t simplebus_get_devinfo; /* * Bus interface definition. */ static device_method_t simplebus_methods[] = { /* Device interface */ DEVMETHOD(device_probe, simplebus_probe), DEVMETHOD(device_attach, simplebus_attach), DEVMETHOD(device_detach, bus_generic_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD(device_suspend, bus_generic_suspend), DEVMETHOD(device_resume, bus_generic_resume), /* Bus interface */ DEVMETHOD(bus_print_child, simplebus_print_child), DEVMETHOD(bus_alloc_resource, simplebus_alloc_resource), DEVMETHOD(bus_release_resource, bus_generic_release_resource), DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), DEVMETHOD(bus_setup_intr, simplebus_setup_intr), DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), DEVMETHOD(bus_get_resource_list, simplebus_get_resource_list), /* OFW bus interface */ DEVMETHOD(ofw_bus_get_devinfo, simplebus_get_devinfo), DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat), DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model), DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name), DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node), DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type), { 0, 0 } }; static driver_t simplebus_driver = { "simplebus", simplebus_methods, sizeof(struct simplebus_softc) }; devclass_t simplebus_devclass; DRIVER_MODULE(simplebus, fdtbus, simplebus_driver, simplebus_devclass, 0, 0); static int simplebus_probe(device_t dev) { if (!ofw_bus_is_compatible_strict(dev, "simple-bus")) return (ENXIO); device_set_desc(dev, "Flattened device tree simple bus"); return (BUS_PROBE_DEFAULT); } static int simplebus_attach(device_t dev) { device_t dev_child; struct simplebus_devinfo *di; struct simplebus_softc *sc; phandle_t dt_node, dt_child; sc = device_get_softc(dev); sc->sc_start_pa = fdt_immr_pa; sc->sc_start_va = fdt_immr_va; sc->sc_size = fdt_immr_size; /* * Walk simple-bus and add direct subordinates as our children. */ dt_node = ofw_bus_get_node(dev); for (dt_child = OF_child(dt_node); dt_child != 0; dt_child = OF_peer(dt_child)) { /* Check and process 'status' property. */ if (!(fdt_is_enabled(dt_child))) continue; if (!(fdt_pm_is_enabled(dt_child))) continue; di = malloc(sizeof(*di), M_SIMPLEBUS, M_WAITOK | M_ZERO); if (ofw_bus_gen_setup_devinfo(&di->di_ofw, dt_child) != 0) { free(di, M_SIMPLEBUS); device_printf(dev, "could not set up devinfo\n"); continue; } resource_list_init(&di->di_res); if (fdt_reg_to_rl(dt_child, &di->di_res, sc->sc_start_va)) { device_printf(dev, "%s: could not process 'reg' " "property\n", di->di_ofw.obd_name); ofw_bus_gen_destroy_devinfo(&di->di_ofw); free(di, M_SIMPLEBUS); continue; } if (fdt_intr_to_rl(dt_child, &di->di_res, di->di_intr_sl)) { device_printf(dev, "%s: could not process " "'interrupts' property\n", di->di_ofw.obd_name); resource_list_free(&di->di_res); ofw_bus_gen_destroy_devinfo(&di->di_ofw); free(di, M_SIMPLEBUS); continue; } /* Add newbus device for this FDT node */ dev_child = device_add_child(dev, NULL, -1); if (dev_child == NULL) { device_printf(dev, "could not add child: %s\n", di->di_ofw.obd_name); resource_list_free(&di->di_res); ofw_bus_gen_destroy_devinfo(&di->di_ofw); free(di, M_SIMPLEBUS); continue; } #ifdef DEBUG device_printf(dev, "added child: %s\n\n", di->di_ofw.obd_name); #endif device_set_ivars(dev_child, di); } return (bus_generic_attach(dev)); } static int simplebus_print_child(device_t dev, device_t child) { struct simplebus_devinfo *di; struct resource_list *rl; int rv; di = device_get_ivars(child); rl = &di->di_res; rv = 0; rv += bus_print_child_header(dev, child); rv += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx"); rv += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); rv += bus_print_child_footer(dev, child); return (rv); } static struct resource * simplebus_alloc_resource(device_t bus, device_t child, int type, int *rid, u_long start, u_long end, u_long count, u_int flags) { struct simplebus_devinfo *di; struct resource_list_entry *rle; /* * Request for the default allocation with a given rid: use resource * list stored in the local device info. */ if ((start == 0UL) && (end == ~0UL)) { if ((di = device_get_ivars(child)) == NULL) return (NULL); if (type == SYS_RES_IOPORT) type = SYS_RES_MEMORY; rle = resource_list_find(&di->di_res, type, *rid); if (rle == NULL) { device_printf(bus, "no default resources for " "rid = %d, type = %d\n", *rid, type); return (NULL); } start = rle->start; end = rle->end; count = rle->count; } return (bus_generic_alloc_resource(bus, child, type, rid, start, end, count, flags)); } static struct resource_list * simplebus_get_resource_list(device_t bus, device_t child) { struct simplebus_devinfo *di; di = device_get_ivars(child); return (&di->di_res); } static int simplebus_setup_intr(device_t bus, device_t child, struct resource *res, int flags, driver_filter_t *filter, driver_intr_t *ihand, void *arg, void **cookiep) { struct simplebus_devinfo *di; enum intr_trigger trig; enum intr_polarity pol; int irq, rid; if (res == NULL) panic("simplebus_setup_intr: NULL irq resource!"); rid = rman_get_rid(res); if (rid > DI_MAX_INTR_NUM) { device_printf(child, "rid out of range rid = %d\n", rid); return (ERANGE); } irq = rman_get_start(res); if ((di = device_get_ivars(child)) == NULL) { device_printf(child, "could not retrieve devinfo\n"); return (ENXIO); } trig = di->di_intr_sl[rid].trig; pol = di->di_intr_sl[rid].pol; debugf("intr config: irq = %d, trig = %d, pol = %d\n", irq, trig, pol); #if defined(__powerpc__) int err; err = powerpc_config_intr(irq, trig, pol); if (err) return (err); #endif return (bus_generic_setup_intr(bus, child, res, flags, filter, ihand, arg, cookiep)); } static const struct ofw_bus_devinfo * simplebus_get_devinfo(device_t bus, device_t child) { struct simplebus_devinfo *di; di = device_get_ivars(child); return (&di->di_ofw); }