b67d11bbcc
constraints on the rman and reject attempts to manage a region that is out of range. - Fix various places that set rm_end incorrectly (to ~0 or ~0u instead of ~0ul). - To preserve existing behavior, change rman_init() to set rm_start and rm_end to allow managing the full range (0 to ~0ul) if they are not set by the caller when rman_init() is called.
666 lines
16 KiB
C
666 lines
16 KiB
C
/*-
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* Copyright (c) 2009-2010 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Semihalf under sponsorship from
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* the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/ktr.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <sys/malloc.h>
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#include <machine/fdt.h>
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#include <dev/ofw/openfirm.h>
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#include "fdt_common.h"
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#include "ofw_bus_if.h"
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#define DEBUG
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#undef DEBUG
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#ifdef DEBUG
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#define debugf(fmt, args...) do { printf("%s(): ", __func__); \
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printf(fmt,##args); } while (0)
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#else
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#define debugf(fmt, args...)
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#endif
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static MALLOC_DEFINE(M_FDTBUS, "fdtbus", "FDTbus devices information");
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struct fdtbus_devinfo {
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phandle_t di_node;
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char *di_name;
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char *di_type;
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char *di_compat;
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struct resource_list di_res;
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/* Interrupts sense-level info for this device */
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struct fdt_sense_level di_intr_sl[DI_MAX_INTR_NUM];
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};
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struct fdtbus_softc {
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struct rman sc_irq;
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struct rman sc_mem;
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};
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/*
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* Prototypes.
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*/
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static void fdtbus_identify(driver_t *, device_t);
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static int fdtbus_probe(device_t);
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static int fdtbus_attach(device_t);
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static int fdtbus_print_child(device_t, device_t);
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static struct resource *fdtbus_alloc_resource(device_t, device_t, int,
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int *, u_long, u_long, u_long, u_int);
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static int fdtbus_release_resource(device_t, device_t, int, int,
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struct resource *);
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static int fdtbus_activate_resource(device_t, device_t, int, int,
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struct resource *);
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static int fdtbus_deactivate_resource(device_t, device_t, int, int,
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struct resource *);
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static int fdtbus_setup_intr(device_t, device_t, struct resource *, int,
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driver_filter_t *, driver_intr_t *, void *, void **);
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static int fdtbus_teardown_intr(device_t, device_t, struct resource *,
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void *);
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static const char *fdtbus_ofw_get_name(device_t, device_t);
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static phandle_t fdtbus_ofw_get_node(device_t, device_t);
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static const char *fdtbus_ofw_get_type(device_t, device_t);
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static const char *fdtbus_ofw_get_compat(device_t, device_t);
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/*
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* Local routines.
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*/
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static void newbus_device_from_fdt_node(device_t, phandle_t);
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/*
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* Bus interface definition.
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*/
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static device_method_t fdtbus_methods[] = {
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/* Device interface */
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DEVMETHOD(device_identify, fdtbus_identify),
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DEVMETHOD(device_probe, fdtbus_probe),
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DEVMETHOD(device_attach, fdtbus_attach),
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DEVMETHOD(device_detach, bus_generic_detach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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/* Bus interface */
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DEVMETHOD(bus_print_child, fdtbus_print_child),
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DEVMETHOD(bus_alloc_resource, fdtbus_alloc_resource),
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DEVMETHOD(bus_release_resource, fdtbus_release_resource),
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DEVMETHOD(bus_activate_resource, fdtbus_activate_resource),
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DEVMETHOD(bus_deactivate_resource, fdtbus_deactivate_resource),
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DEVMETHOD(bus_setup_intr, fdtbus_setup_intr),
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DEVMETHOD(bus_teardown_intr, fdtbus_teardown_intr),
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/* OFW bus interface */
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DEVMETHOD(ofw_bus_get_node, fdtbus_ofw_get_node),
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DEVMETHOD(ofw_bus_get_name, fdtbus_ofw_get_name),
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DEVMETHOD(ofw_bus_get_type, fdtbus_ofw_get_type),
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DEVMETHOD(ofw_bus_get_compat, fdtbus_ofw_get_compat),
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{ 0, 0 }
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};
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static driver_t fdtbus_driver = {
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"fdtbus",
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fdtbus_methods,
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sizeof(struct fdtbus_softc)
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};
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devclass_t fdtbus_devclass;
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DRIVER_MODULE(fdtbus, nexus, fdtbus_driver, fdtbus_devclass, 0, 0);
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static void
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fdtbus_identify(driver_t *driver, device_t parent)
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{
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debugf("%s(driver=%p, parent=%p)\n", __func__, driver, parent);
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if (device_find_child(parent, "fdtbus", -1) == NULL)
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BUS_ADD_CHILD(parent, 0, "fdtbus", -1);
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}
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static int
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fdtbus_probe(device_t dev)
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{
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debugf("%s(dev=%p); pass=%u\n", __func__, dev, bus_current_pass);
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device_set_desc(dev, "FDT main bus");
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if (!bootverbose)
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device_quiet(dev);
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return (BUS_PROBE_DEFAULT);
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}
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static int
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fdtbus_attach(device_t dev)
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{
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phandle_t root;
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phandle_t child;
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struct fdtbus_softc *sc;
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u_long start, end;
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int error;
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if ((root = OF_peer(0)) == 0)
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panic("fdtbus_attach: no root node.");
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sc = device_get_softc(dev);
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/*
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* IRQ rman.
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*/
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start = 0;
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end = FDT_INTR_MAX - 1;
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sc->sc_irq.rm_start = start;
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sc->sc_irq.rm_end = end;
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sc->sc_irq.rm_type = RMAN_ARRAY;
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sc->sc_irq.rm_descr = "Interrupt request lines";
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if ((error = rman_init(&sc->sc_irq)) != 0) {
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device_printf(dev, "could not init IRQ rman, error = %d\n",
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error);
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return (error);
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}
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if ((error = rman_manage_region(&sc->sc_irq, start, end)) != 0) {
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device_printf(dev, "could not manage IRQ region, error = %d\n",
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error);
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return (error);
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}
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/*
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* Mem-mapped I/O space rman.
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*/
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start = 0;
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end = ~0ul;
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sc->sc_mem.rm_start = start;
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sc->sc_mem.rm_end = end;
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sc->sc_mem.rm_type = RMAN_ARRAY;
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sc->sc_mem.rm_descr = "I/O memory";
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if ((error = rman_init(&sc->sc_mem)) != 0) {
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device_printf(dev, "could not init I/O mem rman, error = %d\n",
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error);
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return (error);
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}
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if ((error = rman_manage_region(&sc->sc_mem, start, end)) != 0) {
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device_printf(dev, "could not manage I/O mem region, "
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"error = %d\n", error);
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return (error);
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}
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/*
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* Walk the FDT root node and add top-level devices as our children.
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*/
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for (child = OF_child(root); child != 0; child = OF_peer(child)) {
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/* Check and process 'status' property. */
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if (!(fdt_is_enabled(child)))
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continue;
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newbus_device_from_fdt_node(dev, child);
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}
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return (bus_generic_attach(dev));
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}
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static int
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fdtbus_print_child(device_t dev, device_t child)
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{
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struct fdtbus_devinfo *di;
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struct resource_list *rl;
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int rv;
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di = device_get_ivars(child);
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rl = &di->di_res;
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rv = 0;
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rv += bus_print_child_header(dev, child);
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rv += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
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rv += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
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rv += bus_print_child_footer(dev, child);
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return (rv);
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}
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static void
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newbus_device_destroy(device_t dev)
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{
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struct fdtbus_devinfo *di;
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di = device_get_ivars(dev);
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free(di->di_name, M_OFWPROP);
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free(di->di_type, M_OFWPROP);
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free(di->di_compat, M_OFWPROP);
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resource_list_free(&di->di_res);
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free(di, M_FDTBUS);
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}
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static device_t
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newbus_device_create(device_t dev_par, phandle_t node, char *name, char *type,
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char *compat)
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{
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device_t child;
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struct fdtbus_devinfo *di;
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child = device_add_child(dev_par, NULL, -1);
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if (child == NULL) {
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free(name, M_OFWPROP);
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free(type, M_OFWPROP);
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free(compat, M_OFWPROP);
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return (NULL);
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}
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di = malloc(sizeof(*di), M_FDTBUS, M_WAITOK);
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di->di_node = node;
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di->di_name = name;
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di->di_type = type;
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di->di_compat = compat;
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resource_list_init(&di->di_res);
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if (fdt_reg_to_rl(node, &di->di_res, fdt_immr_va)) {
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device_printf(child, "could not process 'reg' property\n");
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newbus_device_destroy(child);
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child = NULL;
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goto out;
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}
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if (fdt_intr_to_rl(node, &di->di_res, di->di_intr_sl)) {
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device_printf(child, "could not process 'interrupts' "
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"property\n");
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newbus_device_destroy(child);
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child = NULL;
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goto out;
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}
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device_set_ivars(child, di);
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debugf("added child name='%s', node=%p\n", name, (void *)node);
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out:
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return (child);
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}
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static device_t
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newbus_pci_create(device_t dev_par, phandle_t dt_node, u_long par_base,
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u_long par_size)
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{
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pcell_t reg[3 + 2];
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device_t dev_child;
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u_long start, end, count;
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struct fdtbus_devinfo *di;
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char *name, *type, *compat;
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int len;
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OF_getprop_alloc(dt_node, "device_type", 1, (void **)&type);
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if (!(type != NULL && strcmp(type, "pci") == 0)) {
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/* Only process 'pci' subnodes. */
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free(type, M_OFWPROP);
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return (NULL);
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}
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OF_getprop_alloc(dt_node, "name", 1, (void **)&name);
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OF_getprop_alloc(OF_parent(dt_node), "compatible", 1,
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(void **)&compat);
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dev_child = device_add_child(dev_par, NULL, -1);
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if (dev_child == NULL) {
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free(name, M_OFWPROP);
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free(type, M_OFWPROP);
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free(compat, M_OFWPROP);
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return (NULL);
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}
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di = malloc(sizeof(*di), M_FDTBUS, M_WAITOK);
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di->di_node = dt_node;
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di->di_name = name;
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di->di_type = type;
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di->di_compat = compat;
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resource_list_init(&di->di_res);
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/*
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* Produce and set SYS_RES_MEMORY resources.
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*/
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start = 0;
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count = 0;
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len = OF_getprop(dt_node, "reg", ®, sizeof(reg));
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if (len > 0) {
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if (fdt_data_verify((void *)®[1], 2) != 0) {
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device_printf(dev_child, "'reg' address value out of "
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"range\n");
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newbus_device_destroy(dev_child);
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dev_child = NULL;
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goto out;
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}
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start = fdt_data_get((void *)®[1], 2);
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if (fdt_data_verify((void *)®[3], 2) != 0) {
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device_printf(dev_child, "'reg' size value out of "
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"range\n");
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newbus_device_destroy(dev_child);
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dev_child = NULL;
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goto out;
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}
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count = fdt_data_get((void *)®[3], 2);
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}
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/* Calculate address range relative to base. */
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par_base &= 0x000ffffful;
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start &= 0x000ffffful;
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start += par_base + fdt_immr_va;
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if (count == 0)
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count = par_size;
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end = start + count - 1;
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debugf("start = 0x%08lx, end = 0x%08lx, count = 0x%08lx\n",
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start, end, count);
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if (count > par_size) {
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device_printf(dev_child, "'reg' size value out of range\n");
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newbus_device_destroy(dev_child);
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dev_child = NULL;
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goto out;
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}
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resource_list_add(&di->di_res, SYS_RES_MEMORY, 0, start, end, count);
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/*
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* Set SYS_RES_IRQ resources.
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*/
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if (fdt_intr_to_rl(OF_parent(dt_node), &di->di_res, di->di_intr_sl)) {
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device_printf(dev_child, "could not process 'interrupts' "
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"property\n");
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newbus_device_destroy(dev_child);
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dev_child = NULL;
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goto out;
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}
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device_set_ivars(dev_child, di);
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debugf("added child name='%s', node=%p\n", name,
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(void *)dt_node);
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out:
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return (dev_child);
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}
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static void
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pci_from_fdt_node(device_t dev_par, phandle_t dt_node, char *name,
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char *type, char *compat)
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{
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u_long reg_base, reg_size;
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phandle_t dt_child;
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/*
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* Retrieve 'reg' property.
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*/
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if (fdt_regsize(dt_node, ®_base, ®_size) != 0) {
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device_printf(dev_par, "could not retrieve 'reg' prop\n");
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return;
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}
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/*
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* Walk the PCI node and instantiate newbus devices representing
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* logical resources (bridges / ports).
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*/
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for (dt_child = OF_child(dt_node); dt_child != 0;
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dt_child = OF_peer(dt_child)) {
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if (!(fdt_is_enabled(dt_child)))
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continue;
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newbus_pci_create(dev_par, dt_child, reg_base, reg_size);
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}
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}
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/*
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* These FDT nodes do not need a corresponding newbus device object.
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*/
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static char *fdt_devices_skip[] = {
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"aliases",
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"chosen",
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"memory",
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NULL
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};
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static void
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newbus_device_from_fdt_node(device_t dev_par, phandle_t node)
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{
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char *name, *type, *compat;
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device_t child;
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int i;
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OF_getprop_alloc(node, "name", 1, (void **)&name);
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OF_getprop_alloc(node, "device_type", 1, (void **)&type);
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OF_getprop_alloc(node, "compatible", 1, (void **)&compat);
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for (i = 0; fdt_devices_skip[i] != NULL; i++)
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if (name != NULL && strcmp(name, fdt_devices_skip[i]) == 0) {
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debugf("skipping instantiating FDT device='%s'\n",
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name);
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return;
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}
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child = newbus_device_create(dev_par, node, name, type, compat);
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if (type != NULL && strcmp(type, "pci") == 0)
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pci_from_fdt_node(child, node, name, type, compat);
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}
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static struct resource *
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fdtbus_alloc_resource(device_t bus, device_t child, int type, int *rid,
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u_long start, u_long end, u_long count, u_int flags)
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{
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struct fdtbus_softc *sc;
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struct resource *res;
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struct rman *rm;
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struct fdtbus_devinfo *di;
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struct resource_list_entry *rle;
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int needactivate;
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/*
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* Request for the default allocation with a given rid: use resource
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* list stored in the local device info.
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*/
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if ((start == 0UL) && (end == ~0UL)) {
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|
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;
|
|
}
|
|
|
|
sc = device_get_softc(bus);
|
|
|
|
needactivate = flags & RF_ACTIVE;
|
|
flags &= ~RF_ACTIVE;
|
|
|
|
switch (type) {
|
|
case SYS_RES_IRQ:
|
|
rm = &sc->sc_irq;
|
|
break;
|
|
|
|
case SYS_RES_IOPORT:
|
|
case SYS_RES_MEMORY:
|
|
rm = &sc->sc_mem;
|
|
break;
|
|
|
|
default:
|
|
return (NULL);
|
|
}
|
|
|
|
res = rman_reserve_resource(rm, start, end, count, flags, child);
|
|
if (res == NULL) {
|
|
device_printf(bus, "failed to reserve resource %#lx - %#lx "
|
|
"(%#lx)\n", start, end, count);
|
|
return (NULL);
|
|
}
|
|
|
|
rman_set_rid(res, *rid);
|
|
|
|
if (type == SYS_RES_IOPORT || type == SYS_RES_MEMORY) {
|
|
/* XXX endianess should be set based on SOC node */
|
|
rman_set_bustag(res, fdtbus_bs_tag);
|
|
rman_set_bushandle(res, rman_get_start(res));
|
|
}
|
|
|
|
if (needactivate)
|
|
if (bus_activate_resource(child, type, *rid, res)) {
|
|
device_printf(child, "resource activation failed\n");
|
|
rman_release_resource(res);
|
|
return (NULL);
|
|
}
|
|
|
|
return (res);
|
|
}
|
|
|
|
static int
|
|
fdtbus_release_resource(device_t bus, device_t child, int type, int rid,
|
|
struct resource *res)
|
|
{
|
|
int err;
|
|
|
|
if (rman_get_flags(res) & RF_ACTIVE) {
|
|
err = bus_deactivate_resource(child, type, rid, res);
|
|
if (err)
|
|
return (err);
|
|
}
|
|
|
|
return (rman_release_resource(res));
|
|
}
|
|
|
|
static int
|
|
fdtbus_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)
|
|
{
|
|
int err;
|
|
|
|
*cookiep = 0;
|
|
if ((rman_get_flags(res) & RF_SHAREABLE) == 0)
|
|
flags |= INTR_EXCL;
|
|
|
|
err = rman_activate_resource(res);
|
|
if (err)
|
|
return (err);
|
|
|
|
#if defined(__powerpc__)
|
|
err = powerpc_setup_intr(device_get_nameunit(child),
|
|
rman_get_start(res), filter, ihand, arg, flags, cookiep);
|
|
#elif defined(__arm__)
|
|
arm_setup_irqhandler(device_get_nameunit(child),
|
|
filter, ihand, arg, rman_get_start(res), flags, cookiep);
|
|
arm_unmask_irq(rman_get_start(res));
|
|
err = 0;
|
|
#endif
|
|
|
|
return (err);
|
|
}
|
|
|
|
static int
|
|
fdtbus_activate_resource(device_t bus, device_t child, int type, int rid,
|
|
struct resource *res)
|
|
{
|
|
|
|
return (rman_activate_resource(res));
|
|
}
|
|
|
|
static int
|
|
fdtbus_deactivate_resource(device_t bus, device_t child, int type, int rid,
|
|
struct resource *res)
|
|
{
|
|
|
|
return (rman_deactivate_resource(res));
|
|
}
|
|
|
|
|
|
static int
|
|
fdtbus_teardown_intr(device_t bus, device_t child, struct resource *res,
|
|
void *cookie)
|
|
{
|
|
|
|
#if defined(__powerpc__)
|
|
return (powerpc_teardown_intr(cookie));
|
|
#elif defined(__arm__)
|
|
return (arm_remove_irqhandler(rman_get_start(res), cookie));
|
|
#endif
|
|
}
|
|
|
|
static const char *
|
|
fdtbus_ofw_get_name(device_t bus, device_t dev)
|
|
{
|
|
struct fdtbus_devinfo *di;
|
|
|
|
return ((di = device_get_ivars(dev)) == NULL ? NULL : di->di_name);
|
|
}
|
|
|
|
static phandle_t
|
|
fdtbus_ofw_get_node(device_t bus, device_t dev)
|
|
{
|
|
struct fdtbus_devinfo *di;
|
|
|
|
return ((di = device_get_ivars(dev)) == NULL ? 0 : di->di_node);
|
|
}
|
|
|
|
static const char *
|
|
fdtbus_ofw_get_type(device_t bus, device_t dev)
|
|
{
|
|
struct fdtbus_devinfo *di;
|
|
|
|
return ((di = device_get_ivars(dev)) == NULL ? NULL : di->di_type);
|
|
}
|
|
|
|
static const char *
|
|
fdtbus_ofw_get_compat(device_t bus, device_t dev)
|
|
{
|
|
struct fdtbus_devinfo *di;
|
|
|
|
return ((di = device_get_ivars(dev)) == NULL ? NULL : di->di_compat);
|
|
}
|
|
|
|
|