diff options
Diffstat (limited to 'sys/powerpc/aim/nexus.c')
| -rw-r--r-- | sys/powerpc/aim/nexus.c | 418 |
1 files changed, 0 insertions, 418 deletions
diff --git a/sys/powerpc/aim/nexus.c b/sys/powerpc/aim/nexus.c deleted file mode 100644 index 277e58c..0000000 --- a/sys/powerpc/aim/nexus.c +++ /dev/null @@ -1,418 +0,0 @@ -/*- - * Copyright 1998 Massachusetts Institute of Technology - * - * Permission to use, copy, modify, and distribute this software and - * its documentation for any purpose and without fee is hereby - * granted, provided that both the above copyright notice and this - * permission notice appear in all copies, that both the above - * copyright notice and this permission notice appear in all - * supporting documentation, and that the name of M.I.T. not be used - * in advertising or publicity pertaining to distribution of the - * software without specific, written prior permission. M.I.T. makes - * no representations about the suitability of this software for any - * purpose. It is provided "as is" without express or implied - * warranty. - * - * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS - * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, - * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT - * SHALL M.I.T. 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 2001 by Thomas Moestl <tmm@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 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. - * - * from: FreeBSD: src/sys/i386/i386/nexus.c,v 1.43 2001/02/09 - * - * $FreeBSD$ - */ -#include "opt_psim.h" - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/module.h> -#include <sys/bus.h> -#include <sys/cons.h> -#include <sys/kernel.h> -#include <sys/malloc.h> - -#include <dev/ofw/openfirm.h> - -#include <machine/bus.h> -#include <machine/frame.h> -#include <machine/intr_machdep.h> -#include <machine/nexusvar.h> -#include <machine/resource.h> - -#include <sys/rman.h> - -#include "pic_if.h" - -/* - * The nexus (which is a pseudo-bus actually) iterates over the nodes that - * exist in Open Firmware and adds them as devices to this bus so that drivers - * can be attached to them. - * - * Maybe this code should get into dev/ofw to some extent, as some of it should - * work for all Open Firmware based machines... - */ - -static MALLOC_DEFINE(M_NEXUS, "nexus", "nexus device information"); - -struct nexus_devinfo { - phandle_t ndi_node; - /* Some common properties. */ - const char *ndi_name; - const char *ndi_device_type; - const char *ndi_compatible; -}; - -struct nexus_softc { - device_t sc_pic; -}; - -/* - * Device interface - */ -static int nexus_probe(device_t); -static void nexus_probe_nomatch(device_t, device_t); - -/* - * Bus interface - */ -static device_t nexus_add_child(device_t, int, const char *, int); -static int nexus_read_ivar(device_t, device_t, int, uintptr_t *); -static int nexus_write_ivar(device_t, device_t, int, uintptr_t); -static int nexus_setup_intr(device_t, device_t, struct resource *, int, - driver_intr_t *, void *, void **); -static int nexus_teardown_intr(device_t, device_t, struct resource *, - void *); -static struct resource *nexus_alloc_resource(device_t, device_t, int, int *, - u_long, u_long, u_long, u_int); -static int nexus_activate_resource(device_t, device_t, int, int, - struct resource *); -static int nexus_deactivate_resource(device_t, device_t, int, int, - struct resource *); -static int nexus_release_resource(device_t, device_t, int, int, - struct resource *); - -/* - * Local routines - */ -static device_t nexus_device_from_node(device_t, phandle_t); - -static device_method_t nexus_methods[] = { - /* Device interface */ - DEVMETHOD(device_probe, nexus_probe), - DEVMETHOD(device_attach, bus_generic_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. Resource management is business of the children... */ - DEVMETHOD(bus_add_child, nexus_add_child), - DEVMETHOD(bus_print_child, bus_generic_print_child), - DEVMETHOD(bus_probe_nomatch, nexus_probe_nomatch), - DEVMETHOD(bus_read_ivar, nexus_read_ivar), - DEVMETHOD(bus_write_ivar, nexus_write_ivar), - DEVMETHOD(bus_setup_intr, nexus_setup_intr), - DEVMETHOD(bus_teardown_intr, nexus_teardown_intr), - DEVMETHOD(bus_alloc_resource, nexus_alloc_resource), - DEVMETHOD(bus_activate_resource, nexus_activate_resource), - DEVMETHOD(bus_deactivate_resource, nexus_deactivate_resource), - DEVMETHOD(bus_release_resource, nexus_release_resource), - - { 0, 0 } -}; - -static driver_t nexus_driver = { - "nexus", - nexus_methods, - sizeof(struct nexus_softc), -}; - -static devclass_t nexus_devclass; - -DRIVER_MODULE(nexus, root, nexus_driver, nexus_devclass, 0, 0); - -static int -nexus_probe(device_t dev) -{ - phandle_t root; - phandle_t child; - struct nexus_softc *sc; - - if ((root = OF_peer(0)) == -1) - panic("nexus_probe: OF_peer failed."); - - sc = device_get_softc(dev); - - /* - * Allow devices to identify - */ - bus_generic_probe(dev); - - /* - * Now walk the OFW tree to locate top-level devices - */ - for (child = OF_child(root); child != 0; child = OF_peer(child)) { - if (child == -1) - panic("nexus_probe(): OF_child failed."); - (void)nexus_device_from_node(dev, child); - - } - device_set_desc(dev, "Open Firmware Nexus device"); - return (0); -} - -static void -nexus_probe_nomatch(device_t dev, device_t child) -{ - char *name, *type; - - if (BUS_READ_IVAR(dev, child, NEXUS_IVAR_NAME, - (uintptr_t *)&name) != 0 || - BUS_READ_IVAR(dev, child, NEXUS_IVAR_DEVICE_TYPE, - (uintptr_t *)&type) != 0) - return; - - if (type == NULL) - type = "(unknown)"; - - if (bootverbose) - device_printf(dev, "<%s>, type %s (no driver attached)\n", - name, type); -} - -static device_t -nexus_add_child(device_t dev, int order, const char *name, int unit) -{ - device_t child; - struct nexus_devinfo *dinfo; - - child = device_add_child_ordered(dev, order, name, unit); - if (child == NULL) - return (NULL); - - dinfo = malloc(sizeof(struct nexus_devinfo), M_NEXUS, M_NOWAIT|M_ZERO); - if (dinfo == NULL) - return (NULL); - - dinfo->ndi_node = -1; - dinfo->ndi_name = name; - device_set_ivars(child, dinfo); - - return (child); -} - - -static int -nexus_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) -{ - struct nexus_devinfo *dinfo; - - if ((dinfo = device_get_ivars(child)) == 0) - return (ENOENT); - switch (which) { - case NEXUS_IVAR_NODE: - *result = dinfo->ndi_node; - break; - case NEXUS_IVAR_NAME: - *result = (uintptr_t)dinfo->ndi_name; - break; - case NEXUS_IVAR_DEVICE_TYPE: - *result = (uintptr_t)dinfo->ndi_device_type; - break; - case NEXUS_IVAR_COMPATIBLE: - *result = (uintptr_t)dinfo->ndi_compatible; - break; - default: - return (ENOENT); - } - return 0; -} - -static int -nexus_write_ivar(device_t dev, device_t child, int which, uintptr_t value) -{ - struct nexus_devinfo *dinfo; - - if ((dinfo = device_get_ivars(child)) == 0) - return (ENOENT); - - switch (which) { - case NEXUS_IVAR_NAME: - return (EINVAL); - - /* Identified devices may want to set these */ - case NEXUS_IVAR_NODE: - dinfo->ndi_node = (phandle_t)value; - break; - - case NEXUS_IVAR_DEVICE_TYPE: - dinfo->ndi_device_type = (char *)value; - break; - - default: - return (ENOENT); - } - return 0; -} - -static int -nexus_setup_intr(device_t dev, device_t child, struct resource *res, int flags, - driver_intr_t *intr, void *arg, void **cookiep) -{ - struct nexus_softc *sc; - - sc = device_get_softc(dev); - - if (device_get_state(sc->sc_pic) != DS_ATTACHED) - panic("nexus_setup_intr: no pic attached\n"); - - return (PIC_SETUP_INTR(sc->sc_pic, child, res, flags, intr, arg, - cookiep)); -} - -static int -nexus_teardown_intr(device_t dev, device_t child, struct resource *res, - void *ih) -{ - struct nexus_softc *sc; - - sc = device_get_softc(dev); - - if (device_get_state(sc->sc_pic) != DS_ATTACHED) - panic("nexus_teardown_intr: no pic attached\n"); - - return (PIC_TEARDOWN_INTR(sc->sc_pic, child, res, ih)); -} - -/* - * Allocate resources at the behest of a child. This only handles interrupts, - * since I/O resources are handled by child busses. - */ -static struct resource * -nexus_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 nexus_softc *sc; - struct resource *rv; - - sc = device_get_softc(bus); - - if (type != SYS_RES_IRQ) { - device_printf(bus, "unknown resource request from %s\n", - device_get_nameunit(child)); - return (NULL); - } - - if (device_get_state(sc->sc_pic) != DS_ATTACHED) - panic("nexus_alloc_resource: no pic attached\n"); - - rv = PIC_ALLOCATE_INTR(sc->sc_pic, child, rid, start, flags); - - return (rv); -} - -static int -nexus_activate_resource(device_t bus, device_t child, int type, int rid, - struct resource *res) -{ - - /* Not much to be done yet... */ - return (rman_activate_resource(res)); -} - -static int -nexus_deactivate_resource(device_t bus, device_t child, int type, int rid, - struct resource *res) -{ - - /* Not much to be done yet... */ - return (rman_deactivate_resource(res)); -} - -static int -nexus_release_resource(device_t bus, device_t child, int type, int rid, - struct resource *res) -{ - struct nexus_softc *sc; - - sc = device_get_softc(bus); - - if (type != SYS_RES_IRQ) { - device_printf(bus, "unknown resource request from %s\n", - device_get_nameunit(child)); - return (EINVAL); - } - - if (device_get_state(sc->sc_pic) != DS_ATTACHED) - panic("nexus_release_resource: no pic attached\n"); - - return (PIC_RELEASE_INTR(sc->sc_pic, child, rid, res)); -} - -static device_t -nexus_device_from_node(device_t parent, phandle_t node) -{ - device_t cdev; - struct nexus_devinfo *dinfo; - char *name, *type, *compatible; - - OF_getprop_alloc(node, "name", 1, (void **)&name); - OF_getprop_alloc(node, "device_type", 1, (void **)&type); - OF_getprop_alloc(node, "compatible", 1, (void **)&compatible); - cdev = device_add_child(parent, NULL, -1); - if (cdev != NULL) { - dinfo = malloc(sizeof(*dinfo), M_NEXUS, M_WAITOK); - dinfo->ndi_node = node; - dinfo->ndi_name = name; - dinfo->ndi_device_type = type; - dinfo->ndi_compatible = compatible; - device_set_ivars(cdev, dinfo); - } else - free(name, M_OFWPROP); - - return (cdev); -} - -int -nexus_install_intcntlr(device_t dev) -{ - struct nexus_softc *sc; - - sc = device_get_softc(device_get_parent(dev)); - sc->sc_pic = dev; - - return (0); -} |
