svn commit: r256901 - head/sys/powerpc/powerpc
Nathan Whitehorn
nwhitehorn at FreeBSD.org
Tue Oct 22 14:11:16 UTC 2013
Author: nwhitehorn
Date: Tue Oct 22 14:11:16 2013
New Revision: 256901
URL: http://svnweb.freebsd.org/changeset/base/256901
Log:
Catch up on 6 years of improvements in Open Firmware nexus devices by
importing the sparc64 one. At least 90% of this code is MI and will be
moved into /sys/dev/ofw at some point in the future.
Modified:
head/sys/powerpc/powerpc/nexus.c
Modified: head/sys/powerpc/powerpc/nexus.c
==============================================================================
--- head/sys/powerpc/powerpc/nexus.c Tue Oct 22 14:10:00 2013 (r256900)
+++ head/sys/powerpc/powerpc/nexus.c Tue Oct 22 14:11:16 2013 (r256901)
@@ -1,5 +1,8 @@
/*-
* Copyright 1998 Massachusetts Institute of Technology
+ * Copyright 2001 by Thomas Moestl <tmm at FreeBSD.org>.
+ * Copyright 2006 by Marius Strobl <marius at FreeBSD.org>.
+ * All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby
@@ -25,30 +28,6 @@
* 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 at 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
*/
@@ -58,81 +37,71 @@ __FBSDID("$FreeBSD$");
#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 <sys/module.h>
+#include <sys/pcpu.h>
+#include <sys/rman.h>
+
+#include <vm/vm.h>
+#include <vm/pmap.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/ofw/openfirm.h>
#include <machine/bus.h>
-#include <machine/frame.h>
#include <machine/intr_machdep.h>
#include <machine/resource.h>
-#include <sys/rman.h>
-
-#include "ofw_bus_if.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.
+ * hang from the Open Firmware root node and adds them as devices to this bus
+ * (except some special nodes which are excluded) so that drivers can be
+ * attached to them.
+ *
+ * Additionally, interrupt setup/teardown and some resource management are
+ * done at this level.
*
* 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 {
- struct ofw_bus_devinfo ndi_ofwinfo;
+ struct ofw_bus_devinfo ndi_obdinfo;
+ struct resource_list ndi_rl;
};
struct nexus_softc {
- struct rman sc_rman;
+ uint32_t acells, scells;
+ struct rman sc_intr_rman;
+ struct rman sc_mem_rman;
};
-/*
- * Device interface
- */
-static int nexus_probe(device_t);
-static int nexus_attach(device_t);
-
-/*
- * Bus interface
- */
-static device_t nexus_add_child(device_t, u_int, const char *, int);
-static void nexus_probe_nomatch(device_t, device_t);
+static device_probe_t nexus_probe;
+static device_attach_t nexus_attach;
+static bus_print_child_t nexus_print_child;
+static bus_add_child_t nexus_add_child;
+static bus_probe_nomatch_t nexus_probe_nomatch;
+static bus_setup_intr_t nexus_setup_intr;
+static bus_teardown_intr_t nexus_teardown_intr;
+static bus_alloc_resource_t nexus_alloc_resource;
+static bus_activate_resource_t nexus_activate_resource;
+static bus_deactivate_resource_t nexus_deactivate_resource;
+static bus_adjust_resource_t nexus_adjust_resource;
+static bus_release_resource_t nexus_release_resource;
+static bus_get_resource_list_t nexus_get_resource_list;
#ifdef SMP
-static int nexus_bind_intr(device_t dev, device_t child,
- struct resource *irq, int cpu);
+static bus_bind_intr_t nexus_bind_intr;
#endif
-static int nexus_config_intr(device_t dev, int irq, enum intr_trigger trig,
- enum intr_polarity pol);
-static int nexus_setup_intr(device_t, device_t, struct resource *, int,
- driver_filter_t *, 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 *);
-static const struct ofw_bus_devinfo *nexus_get_devinfo(device_t dev,
- device_t child);
+static bus_config_intr_t nexus_config_intr;
+static ofw_bus_get_devinfo_t nexus_get_devinfo;
-/*
- * Local routines
- */
-static device_t nexus_device_from_node(device_t, phandle_t);
+static int nexus_inlist(const char *, const char *const *);
+static struct nexus_devinfo * nexus_setup_dinfo(device_t, phandle_t);
+static void nexus_destroy_dinfo(struct nexus_devinfo *);
+static int nexus_print_res(struct nexus_devinfo *);
static device_method_t nexus_methods[] = {
/* Device interface */
@@ -143,22 +112,29 @@ static device_method_t nexus_methods[] =
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
- /* Bus interface. Resource management is business of the children... */
+ /* Bus interface */
+ DEVMETHOD(bus_print_child, nexus_print_child),
+ DEVMETHOD(bus_probe_nomatch, nexus_probe_nomatch),
+ DEVMETHOD(bus_read_ivar, bus_generic_read_ivar),
+ DEVMETHOD(bus_write_ivar, bus_generic_write_ivar),
DEVMETHOD(bus_add_child, nexus_add_child),
DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str),
- DEVMETHOD(bus_probe_nomatch, nexus_probe_nomatch),
+ DEVMETHOD(bus_alloc_resource, nexus_alloc_resource),
+ DEVMETHOD(bus_activate_resource, nexus_activate_resource),
+ DEVMETHOD(bus_deactivate_resource, nexus_deactivate_resource),
+ DEVMETHOD(bus_adjust_resource, nexus_adjust_resource),
+ DEVMETHOD(bus_release_resource, nexus_release_resource),
DEVMETHOD(bus_setup_intr, nexus_setup_intr),
DEVMETHOD(bus_teardown_intr, nexus_teardown_intr),
+ DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
+ DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
+ DEVMETHOD(bus_get_resource_list, nexus_get_resource_list),
#ifdef SMP
DEVMETHOD(bus_bind_intr, nexus_bind_intr),
#endif
DEVMETHOD(bus_config_intr, nexus_config_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),
- /* OFW bus interface */
+ /* ofw_bus interface */
DEVMETHOD(ofw_bus_get_devinfo, nexus_get_devinfo),
DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
@@ -169,21 +145,64 @@ static device_method_t nexus_methods[] =
DEVMETHOD_END
};
-static driver_t nexus_driver = {
- "nexus",
- nexus_methods,
- sizeof(struct nexus_softc),
-};
-
static devclass_t nexus_devclass;
+DEFINE_CLASS_0(nexus, nexus_driver, nexus_methods, sizeof(struct nexus_softc));
EARLY_DRIVER_MODULE(nexus, root, nexus_driver, nexus_devclass, 0, 0,
BUS_PASS_BUS);
+MODULE_VERSION(nexus, 1);
+
+static const char *const nexus_excl_name[] = {
+ "FJSV,system",
+ "aliases",
+ "associations",
+ "chosen",
+ "cmp",
+ "counter-timer", /* No separate device; handled by psycho/sbus */
+ "failsafe",
+ "memory",
+ "openprom",
+ "options",
+ "packages",
+ "physical-memory",
+ "rsc",
+ "sgcn",
+ "todsg",
+ "virtual-memory",
+ NULL
+};
+
+static const char *const nexus_excl_type[] = {
+ "core",
+ "cpu",
+ NULL
+};
+
+extern struct bus_space_tag nexus_bustag;
+extern struct bus_dma_tag nexus_dmatag;
+
+static int
+nexus_inlist(const char *name, const char *const *list)
+{
+ int i;
+
+ if (name == NULL)
+ return (0);
+ for (i = 0; list[i] != NULL; i++)
+ if (strcmp(name, list[i]) == 0)
+ return (1);
+ return (0);
+}
+
+#define NEXUS_EXCLUDED(name, type) \
+ (nexus_inlist((name), nexus_excl_name) || \
+ ((type) != NULL && nexus_inlist((type), nexus_excl_type)))
static int
nexus_probe(device_t dev)
{
- bus_generic_probe(dev);
+
+ /* Nexus does always match. */
device_set_desc(dev, "Open Firmware Nexus device");
return (0);
}
@@ -191,225 +210,424 @@ nexus_probe(device_t dev)
static int
nexus_attach(device_t dev)
{
- phandle_t root;
- phandle_t child;
- struct nexus_softc *sc;
- u_long start, end;
+ struct nexus_devinfo *ndi;
+ struct nexus_softc *sc;
+ device_t cdev;
+ phandle_t node;
sc = device_get_softc(dev);
- start = 0;
- end = ~0;
+ if (strcmp(device_get_name(device_get_parent(dev)), "root") == 0) {
+ node = OF_peer(0);
- sc->sc_rman.rm_start = start;
- sc->sc_rman.rm_end = end;
- sc->sc_rman.rm_type = RMAN_ARRAY;
- sc->sc_rman.rm_descr = "Interrupt request lines";
- if (rman_init(&sc->sc_rman) ||
- rman_manage_region(&sc->sc_rman, start, end))
- panic("nexus_probe IRQ rman");
+ sc->sc_intr_rman.rm_type = RMAN_ARRAY;
+ sc->sc_intr_rman.rm_descr = "Interrupts";
+ sc->sc_mem_rman.rm_type = RMAN_ARRAY;
+ sc->sc_mem_rman.rm_descr = "Device Memory";
+ if (rman_init(&sc->sc_intr_rman) != 0 ||
+ rman_init(&sc->sc_mem_rman) != 0 ||
+ rman_manage_region(&sc->sc_intr_rman, 0, ~0) != 0 ||
+ rman_manage_region(&sc->sc_mem_rman, 0, BUS_SPACE_MAXADDR)
+ != 0)
+ panic("%s: failed to set up rmans.", __func__);
+ } else
+ node = ofw_bus_get_node(dev);
- if ((root = OF_peer(0)) == 0)
+ /*
+ * Allow devices to identify.
+ */
+ bus_generic_probe(dev);
+
+ /*
+ * If no Open Firmware, bail early
+ */
+ if (node == -1)
return (bus_generic_attach(dev));
-
+
/*
- * Now walk the OFW tree to locate top-level devices
+ * Some important numbers
*/
- 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);
+ sc->acells = 2;
+ OF_getprop(node, "#address-cells", &sc->acells, sizeof(sc->acells));
+ sc->scells = 1;
+ OF_getprop(node, "#size-cells", &sc->scells, sizeof(sc->scells));
+ /*
+ * Now walk the OFW tree and attach top-level devices.
+ */
+ for (node = OF_child(node); node > 0; node = OF_peer(node)) {
+ if ((ndi = nexus_setup_dinfo(dev, node)) == NULL)
+ continue;
+ cdev = device_add_child(dev, NULL, -1);
+ if (cdev == NULL) {
+ device_printf(dev, "<%s>: device_add_child failed\n",
+ ndi->ndi_obdinfo.obd_name);
+ nexus_destroy_dinfo(ndi);
+ continue;
+ }
+ device_set_ivars(cdev, ndi);
}
-
return (bus_generic_attach(dev));
}
-static void
-nexus_probe_nomatch(device_t dev, device_t child)
+static device_t
+nexus_add_child(device_t dev, u_int order, const char *name, int unit)
{
- const char *name, *type;
+ device_t cdev;
+ struct nexus_devinfo *ndi;
- name = ofw_bus_get_name(child);
- type = ofw_bus_get_type(child);
+ cdev = device_add_child_ordered(dev, order, name, unit);
+ if (cdev == NULL)
+ return (NULL);
- if (name == NULL)
- name = "unknown";
- if (type == NULL)
- type = "(unknown)";
-
- if (bootverbose)
- device_printf(dev, "<%s>, type %s (no driver attached)\n",
- name, type);
+ ndi = malloc(sizeof(*ndi), M_DEVBUF, M_WAITOK | M_ZERO);
+ ndi->ndi_obdinfo.obd_node = -1;
+ resource_list_init(&ndi->ndi_rl);
+ device_set_ivars(cdev, ndi);
+
+ return (cdev);
}
-static device_t
-nexus_add_child(device_t dev, u_int order, const char *name, int unit)
+static int
+nexus_print_child(device_t bus, device_t child)
{
- device_t child;
- struct nexus_devinfo *dinfo;
+ int rv;
- child = device_add_child_ordered(dev, order, name, unit);
- if (child == NULL)
- return (NULL);
+ rv = bus_print_child_header(bus, child);
+ rv += nexus_print_res(device_get_ivars(child));
+ rv += bus_print_child_footer(bus, child);
+ return (rv);
+}
- dinfo = malloc(sizeof(struct nexus_devinfo), M_NEXUS, M_NOWAIT|M_ZERO);
- if (dinfo == NULL)
- return (NULL);
+static void
+nexus_probe_nomatch(device_t bus, device_t child)
+{
+ const char *name, *type;
- dinfo->ndi_ofwinfo.obd_node = -1;
- dinfo->ndi_ofwinfo.obd_name = NULL;
- dinfo->ndi_ofwinfo.obd_compat = NULL;
- dinfo->ndi_ofwinfo.obd_type = NULL;
- dinfo->ndi_ofwinfo.obd_model = NULL;
+ if (!bootverbose)
+ return;
- device_set_ivars(child, dinfo);
+ name = ofw_bus_get_name(child);
+ type = ofw_bus_get_type(child);
- return (child);
+ device_printf(bus, "<%s>",
+ name != NULL ? name : "unknown");
+ nexus_print_res(device_get_ivars(child));
+ printf(" type %s (no driver attached)\n",
+ type != NULL ? type : "unknown");
}
static int
-nexus_setup_intr(device_t dev, device_t child, struct resource *res, int flags,
- driver_filter_t *filter, driver_intr_t *ihand, void *arg, void **cookiep)
+nexus_setup_intr(device_t bus __unused, device_t child, struct resource *r,
+ int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg,
+ void **cookiep)
{
- int error;
+ int error;
- /* somebody tried to setup an irq that failed to allocate! */
- if (res == NULL)
- panic("nexus_setup_intr: NULL irq resource!");
+ if (r == NULL)
+ panic("%s: NULL interrupt resource!", __func__);
- *cookiep = 0;
- if ((rman_get_flags(res) & RF_SHAREABLE) == 0)
+ if ((rman_get_flags(r) & RF_SHAREABLE) == 0)
flags |= INTR_EXCL;
- /*
- * We depend here on rman_activate_resource() being idempotent.
- */
- error = rman_activate_resource(res);
+ /* We depend here on rman_activate_resource() being idempotent. */
+ error = rman_activate_resource(r);
if (error)
return (error);
error = powerpc_setup_intr(device_get_nameunit(child),
- rman_get_start(res), filter, ihand, arg, flags, cookiep);
+ rman_get_start(r), filt, intr, arg, flags, cookiep);
return (error);
}
static int
-nexus_teardown_intr(device_t dev, device_t child, struct resource *res,
- void *cookie)
+nexus_teardown_intr(device_t bus __unused, device_t child __unused,
+ struct resource *r, void *ih)
{
+
+ if (r == NULL)
+ return (EINVAL);
- return (powerpc_teardown_intr(cookie));
+ return (powerpc_teardown_intr(ih));
}
#ifdef SMP
static int
-nexus_bind_intr(device_t dev, device_t child, struct resource *irq, int cpu)
+nexus_bind_intr(device_t bus __unused, device_t child __unused,
+ struct resource *r, int cpu)
{
- return (powerpc_bind_intr(rman_get_start(irq), cpu));
+ return (powerpc_bind_intr(rman_get_start(r), cpu));
}
#endif
-
+
static int
nexus_config_intr(device_t dev, int irq, enum intr_trigger trig,
enum intr_polarity pol)
{
+
+ return (powerpc_config_intr(irq, trig, pol));
+}
- return (powerpc_config_intr(irq, trig, pol));
-}
-
-/*
- * 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 rman *rm;
struct resource *rv;
+ struct resource_list_entry *rle;
+ device_t nexus;
+ int isdefault, passthrough;
+
+ isdefault = (start == 0UL && end == ~0UL);
+ passthrough = (device_get_parent(child) != bus);
+ nexus = bus;
+ while (strcmp(device_get_name(device_get_parent(nexus)), "root") != 0)
+ nexus = device_get_parent(nexus);
+ sc = device_get_softc(nexus);
+ rle = NULL;
+
+ if (!passthrough && isdefault) {
+ rle = resource_list_find(BUS_GET_RESOURCE_LIST(bus, child),
+ type, *rid);
+ if (rle == NULL)
+ return (NULL);
+ if (rle->res != NULL)
+ panic("%s: resource entry is busy", __func__);
+ start = rle->start;
+ count = ulmax(count, rle->count);
+ end = ulmax(rle->end, start + count - 1);
+ }
- if (type != SYS_RES_IRQ) {
- device_printf(bus, "unknown resource request from %s\n",
- device_get_nameunit(child));
+ switch (type) {
+ case SYS_RES_IRQ:
+ rm = &sc->sc_intr_rman;
+ break;
+ case SYS_RES_MEMORY:
+ rm = &sc->sc_mem_rman;
+ break;
+ default:
return (NULL);
}
- if (count == 0 || start + count - 1 != end) {
- device_printf(bus, "invalid IRQ allocation from %s\n",
- device_get_nameunit(child));
+ rv = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
+ child);
+ if (rv == NULL)
return (NULL);
- }
+ rman_set_rid(rv, *rid);
- sc = device_get_softc(bus);
+ if ((flags & RF_ACTIVE) != 0 && bus_activate_resource(child, type,
+ *rid, rv) != 0) {
+ rman_release_resource(rv);
+ return (NULL);
+ }
- rv = rman_reserve_resource(&sc->sc_rman, start, end, count,
- flags, child);
- if (rv == NULL) {
- device_printf(bus, "IRQ allocation failed for %s\n",
- device_get_nameunit(child));
- } else
- rman_set_rid(rv, *rid);
+ if (!passthrough && rle != NULL) {
+ rle->res = rv;
+ rle->start = rman_get_start(rv);
+ rle->end = rman_get_end(rv);
+ rle->count = rle->end - rle->start + 1;
+ }
return (rv);
}
static int
-nexus_activate_resource(device_t bus, device_t child, int type, int rid,
- struct resource *res)
+nexus_activate_resource(device_t bus __unused, device_t child __unused,
+ int type, int rid __unused, struct resource *r)
{
- /* Not much to be done yet... */
- return (rman_activate_resource(res));
+ if (type == SYS_RES_MEMORY) {
+ vm_offset_t start;
+ void *p;
+
+ start = (vm_offset_t) rman_get_start(r);
+ if (bootverbose)
+ printf("nexus mapdev: start %zx, len %ld\n", start,
+ rman_get_size(r));
+
+ p = pmap_mapdev(start, (vm_size_t) rman_get_size(r));
+ if (p == NULL)
+ return (ENOMEM);
+ rman_set_virtual(r, p);
+ rman_set_bustag(r, &bs_be_tag);
+ rman_set_bushandle(r, (u_long)p);
+ }
+ return (rman_activate_resource(r));
}
static int
-nexus_deactivate_resource(device_t bus, device_t child, int type, int rid,
- struct resource *res)
+nexus_deactivate_resource(device_t bus __unused, device_t child __unused,
+ int type __unused, int rid __unused, struct resource *r)
{
- /* Not much to be done yet... */
- return (rman_deactivate_resource(res));
+ /*
+ * If this is a memory resource, unmap it.
+ */
+ if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) {
+ bus_size_t psize;
+
+ psize = rman_get_size(r);
+ pmap_unmapdev((vm_offset_t)rman_get_virtual(r), psize);
+ }
+
+ return (rman_deactivate_resource(r));
}
static int
-nexus_release_resource(device_t bus, device_t child, int type, int rid,
- struct resource *res)
+nexus_adjust_resource(device_t bus, device_t child __unused, int type,
+ struct resource *r, u_long start, u_long end)
{
+ struct nexus_softc *sc;
+ struct rman *rm;
+ device_t nexus;
- if (type != SYS_RES_IRQ) {
- device_printf(bus, "unknown resource request from %s\n",
- device_get_nameunit(child));
+ nexus = bus;
+ while (strcmp(device_get_name(device_get_parent(nexus)), "root") != 0)
+ nexus = device_get_parent(nexus);
+ sc = device_get_softc(nexus);
+ switch (type) {
+ case SYS_RES_IRQ:
+ rm = &sc->sc_intr_rman;
+ break;
+ case SYS_RES_MEMORY:
+ rm = &sc->sc_mem_rman;
+ break;
+ default:
return (EINVAL);
}
-
- return (rman_release_resource(res));
+ if (rm == NULL)
+ return (ENXIO);
+ if (rman_is_region_manager(r, rm) == 0)
+ return (EINVAL);
+ return (rman_adjust_resource(r, start, end));
}
-static device_t
-nexus_device_from_node(device_t parent, phandle_t node)
+static int
+nexus_release_resource(device_t bus __unused, device_t child, int type,
+ int rid, struct resource *r)
{
- device_t cdev;
- struct nexus_devinfo *dinfo;
+ int error;
- cdev = device_add_child(parent, NULL, -1);
- if (cdev != NULL) {
- dinfo = malloc(sizeof(*dinfo), M_NEXUS, M_WAITOK);
- ofw_bus_gen_setup_devinfo(&dinfo->ndi_ofwinfo, node);
- device_set_ivars(cdev, dinfo);
+ if ((rman_get_flags(r) & RF_ACTIVE) != 0) {
+ error = bus_deactivate_resource(child, type, rid, r);
+ if (error)
+ return (error);
}
+ return (rman_release_resource(r));
+}
- return (cdev);
+static struct resource_list *
+nexus_get_resource_list(device_t bus __unused, device_t child)
+{
+ struct nexus_devinfo *ndi;
+
+ ndi = device_get_ivars(child);
+ return (&ndi->ndi_rl);
}
static const struct ofw_bus_devinfo *
-nexus_get_devinfo(device_t dev, device_t child)
+nexus_get_devinfo(device_t bus __unused, device_t child)
+{
+ struct nexus_devinfo *ndi;
+
+ ndi = device_get_ivars(child);
+ return (&ndi->ndi_obdinfo);
+}
+
+static struct nexus_devinfo *
+nexus_setup_dinfo(device_t dev, phandle_t node)
{
- struct nexus_devinfo *dinfo;
+ struct nexus_softc *sc;
+ struct nexus_devinfo *ndi;
+ uint32_t *reg, *intr, icells;
+ uint64_t phys, size;
+ phandle_t iparent;
+ int i, j;
+ int nintr;
+ int nreg;
- dinfo = device_get_ivars(child);
- return (&dinfo->ndi_ofwinfo);
+ sc = device_get_softc(dev);
+
+ ndi = malloc(sizeof(*ndi), M_DEVBUF, M_WAITOK | M_ZERO);
+ if (ofw_bus_gen_setup_devinfo(&ndi->ndi_obdinfo, node) != 0) {
+ free(ndi, M_DEVBUF);
+ return (NULL);
+ }
+ if (NEXUS_EXCLUDED(ndi->ndi_obdinfo.obd_name,
+ ndi->ndi_obdinfo.obd_type)) {
+ ofw_bus_gen_destroy_devinfo(&ndi->ndi_obdinfo);
+ free(ndi, M_DEVBUF);
+ return (NULL);
+ }
+
+ resource_list_init(&ndi->ndi_rl);
+ nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)®);
+ if (nreg == -1)
+ nreg = 0;
+
+ for (i = 0; i < nreg; i += sc->acells + sc->scells) {
+ phys = size = 0;
+ for (j = 0; j < sc->acells; j++) {
+ phys <<= 32;
+ phys |= reg[i + j];
+ }
+ for (j = 0; j < sc->scells; j++) {
+ size <<= 32;
+ size |= reg[i + sc->acells + j];
+ }
+ /* Skip the dummy reg property of glue devices like ssm(4). */
+ if (size != 0)
+ resource_list_add(&ndi->ndi_rl, SYS_RES_MEMORY, i,
+ phys, phys + size - 1, size);
+ }
+ free(reg, M_OFWPROP);
+
+ nintr = OF_getprop_alloc(node, "interrupts", sizeof(*intr),
+ (void **)&intr);
+ if (nintr > 0) {
+ iparent = 0;
+ OF_searchprop(node, "interrupt-parent", &iparent,
+ sizeof(iparent));
+ OF_searchprop(iparent, "#interrupt-cells", &icells,
+ sizeof(icells));
+ for (i = 0; i < nintr; i+= icells) {
+ intr[i] = MAP_IRQ(iparent, intr[i]);
+ resource_list_add(&ndi->ndi_rl, SYS_RES_IRQ, i, intr[i],
+ intr[i], 1);
+ if (icells > 1) {
+ powerpc_config_intr(intr[i], (intr[i+1] & 1) ?
+ INTR_TRIGGER_LEVEL : INTR_TRIGGER_EDGE,
+ INTR_POLARITY_LOW);
+ }
+ }
+ free(intr, M_OFWPROP);
+ }
+
+ return (ndi);
+}
+
+static void
+nexus_destroy_dinfo(struct nexus_devinfo *ndi)
+{
+
+ resource_list_free(&ndi->ndi_rl);
+ ofw_bus_gen_destroy_devinfo(&ndi->ndi_obdinfo);
+ free(ndi, M_DEVBUF);
+}
+
+static int
+nexus_print_res(struct nexus_devinfo *ndi)
+{
+ int rv;
+
+ rv = 0;
+ rv += resource_list_print_type(&ndi->ndi_rl, "mem", SYS_RES_MEMORY,
+ "%#lx");
+ rv += resource_list_print_type(&ndi->ndi_rl, "irq", SYS_RES_IRQ,
+ "%ld");
+ return (rv);
}
More information about the svn-src-all
mailing list