1252c9346c
OF_getprop_alloc takes element size argument and returns number of elements in the property. There are valid use cases for such behavior but mostly API consumers pass 1 as element size to get string properties. What API users would expect from OF_getprop_alloc is to be a combination of malloc + OF_getprop with the same semantic of return value. This patch modifies API signature to match these expectations. For the valid use cases with element size != 1 and to reduce modification scope new OF_getprop_alloc_multi function has been introduced that behaves the same way OF_getprop_alloc behaved prior to this patch. Reviewed by: ian, manu Differential Revision: https://reviews.freebsd.org/D14850
418 lines
12 KiB
C
418 lines
12 KiB
C
/* $OpenBSD: dma_sbus.c,v 1.16 2008/06/26 05:42:18 ray Exp $ */
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/* $NetBSD: dma_sbus.c,v 1.32 2008/04/28 20:23:57 martin Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-NetBSD AND BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Paul Kranenburg.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1994 Peter Galbavy. All rights reserved.
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* Copyright (c) 2005 Marius Strobl <marius@FreeBSD.org>. All rights reserved.
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 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/bus.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/rman.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <dev/ofw/openfirm.h>
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#include <machine/bus.h>
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#include <machine/bus_common.h>
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#include <machine/resource.h>
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#include <sparc64/sbus/lsi64854reg.h>
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#include <sparc64/sbus/lsi64854var.h>
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#include <sparc64/sbus/ofw_sbus.h>
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#include <sparc64/sbus/sbusreg.h>
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#include <sparc64/sbus/sbusvar.h>
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struct dma_devinfo {
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struct ofw_bus_devinfo ddi_obdinfo;
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struct resource_list ddi_rl;
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};
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struct dma_softc {
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struct lsi64854_softc sc_lsi64854; /* base device */
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int sc_ign;
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int sc_slot;
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};
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static devclass_t dma_devclass;
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static device_probe_t dma_probe;
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static device_attach_t dma_attach;
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static bus_print_child_t dma_print_child;
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static bus_probe_nomatch_t dma_probe_nomatch;
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static bus_get_resource_list_t dma_get_resource_list;
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static ofw_bus_get_devinfo_t dma_get_devinfo;
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static struct dma_devinfo *dma_setup_dinfo(device_t, struct dma_softc *,
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phandle_t);
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static void dma_destroy_dinfo(struct dma_devinfo *);
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static int dma_print_res(struct dma_devinfo *);
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static device_method_t dma_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, dma_probe),
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DEVMETHOD(device_attach, dma_attach),
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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, dma_print_child),
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DEVMETHOD(bus_probe_nomatch, dma_probe_nomatch),
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DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource),
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DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
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DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
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DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource),
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DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
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DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
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DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
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DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
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DEVMETHOD(bus_get_resource_list, dma_get_resource_list),
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DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str),
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/* ofw_bus interface */
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DEVMETHOD(ofw_bus_get_devinfo, dma_get_devinfo),
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DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
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DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
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DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
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DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
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DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
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DEVMETHOD_END
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};
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static driver_t dma_driver = {
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"dma",
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dma_methods,
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sizeof(struct dma_softc),
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};
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/*
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* The probe order is handled by sbus(4) as we don't want the variants
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* with children to be attached earlier than the stand-alone controllers
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* in order to generally preserve the OFW device tree order.
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*/
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EARLY_DRIVER_MODULE(dma, sbus, dma_driver, dma_devclass, 0, 0,
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BUS_PASS_DEFAULT);
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MODULE_DEPEND(dma, sbus, 1, 1, 1);
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MODULE_VERSION(dma, 1);
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static int
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dma_probe(device_t dev)
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{
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const char *name;
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name = ofw_bus_get_name(dev);
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if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0 ||
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strcmp(name, "ledma") == 0) {
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device_set_desc_copy(dev, name);
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return (0);
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}
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return (ENXIO);
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}
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static int
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dma_attach(device_t dev)
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{
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struct dma_softc *dsc;
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struct lsi64854_softc *lsc;
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struct dma_devinfo *ddi;
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device_t cdev;
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const char *name;
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char *cabletype;
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uint32_t csr;
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phandle_t child, node;
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int error, i;
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dsc = device_get_softc(dev);
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lsc = &dsc->sc_lsi64854;
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name = ofw_bus_get_name(dev);
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node = ofw_bus_get_node(dev);
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dsc->sc_ign = sbus_get_ign(dev);
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dsc->sc_slot = sbus_get_slot(dev);
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i = 0;
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lsc->sc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i,
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RF_ACTIVE);
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if (lsc->sc_res == NULL) {
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device_printf(dev, "cannot allocate resources\n");
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return (ENXIO);
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}
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if (strcmp(name, "espdma") == 0 || strcmp(name, "dma") == 0)
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lsc->sc_channel = L64854_CHANNEL_SCSI;
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else if (strcmp(name, "ledma") == 0) {
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/*
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* Check to see which cable type is currently active and
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* set the appropriate bit in the ledma csr so that it
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* gets used. If we didn't netboot, the PROM won't have
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* the "cable-selection" property; default to TP and then
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* the user can change it via a "media" option to ifconfig.
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*/
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csr = L64854_GCSR(lsc);
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if ((OF_getprop_alloc(node, "cable-selection",
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(void **)&cabletype)) == -1) {
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/* assume TP if nothing there */
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csr |= E_TP_AUI;
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} else {
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if (strcmp(cabletype, "aui") == 0)
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csr &= ~E_TP_AUI;
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else
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csr |= E_TP_AUI;
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OF_prop_free(cabletype);
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}
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L64854_SCSR(lsc, csr);
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DELAY(20000); /* manual says we need a 20ms delay */
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lsc->sc_channel = L64854_CHANNEL_ENET;
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} else {
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device_printf(dev, "unsupported DMA channel\n");
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error = ENXIO;
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goto fail_lres;
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}
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error = bus_dma_tag_create(
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bus_get_dma_tag(dev), /* parent */
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1, 0, /* alignment, boundary */
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BUS_SPACE_MAXADDR, /* lowaddr */
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BUS_SPACE_MAXADDR, /* highaddr */
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NULL, NULL, /* filter, filterarg */
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BUS_SPACE_MAXSIZE, /* maxsize */
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BUS_SPACE_UNRESTRICTED, /* nsegments */
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BUS_SPACE_MAXSIZE, /* maxsegsize */
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0, /* flags */
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NULL, NULL, /* no locking */
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&lsc->sc_parent_dmat);
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if (error != 0) {
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device_printf(dev, "cannot allocate parent DMA tag\n");
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goto fail_lres;
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}
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i = sbus_get_burstsz(dev);
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lsc->sc_burst = (i & SBUS_BURST_32) ? 32 :
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(i & SBUS_BURST_16) ? 16 : 0;
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lsc->sc_dev = dev;
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/* Attach children. */
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i = 0;
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for (child = OF_child(node); child != 0; child = OF_peer(child)) {
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if ((ddi = dma_setup_dinfo(dev, dsc, child)) == NULL)
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continue;
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if (i != 0) {
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device_printf(dev,
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"<%s>: only one child per DMA channel supported\n",
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ddi->ddi_obdinfo.obd_name);
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dma_destroy_dinfo(ddi);
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continue;
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}
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if ((cdev = device_add_child(dev, NULL, -1)) == NULL) {
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device_printf(dev, "<%s>: device_add_child failed\n",
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ddi->ddi_obdinfo.obd_name);
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dma_destroy_dinfo(ddi);
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continue;
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}
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device_set_ivars(cdev, ddi);
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i++;
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}
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return (bus_generic_attach(dev));
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fail_lres:
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bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(lsc->sc_res),
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lsc->sc_res);
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return (error);
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}
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static struct dma_devinfo *
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dma_setup_dinfo(device_t dev, struct dma_softc *dsc, phandle_t node)
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{
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struct dma_devinfo *ddi;
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struct sbus_regs *reg;
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uint32_t base, iv, *intr;
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int i, nreg, nintr, slot, rslot;
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ddi = malloc(sizeof(*ddi), M_DEVBUF, M_WAITOK | M_ZERO);
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if (ofw_bus_gen_setup_devinfo(&ddi->ddi_obdinfo, node) != 0) {
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free(ddi, M_DEVBUF);
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return (NULL);
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}
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resource_list_init(&ddi->ddi_rl);
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slot = -1;
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nreg = OF_getprop_alloc_multi(node, "reg", sizeof(*reg), (void **)®);
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if (nreg == -1) {
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device_printf(dev, "<%s>: incomplete\n",
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ddi->ddi_obdinfo.obd_name);
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goto fail;
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}
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for (i = 0; i < nreg; i++) {
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base = reg[i].sbr_offset;
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if (SBUS_ABS(base)) {
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rslot = SBUS_ABS_TO_SLOT(base);
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base = SBUS_ABS_TO_OFFSET(base);
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} else
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rslot = reg[i].sbr_slot;
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if (slot != -1 && slot != rslot) {
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device_printf(dev, "<%s>: multiple slots\n",
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ddi->ddi_obdinfo.obd_name);
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OF_prop_free(reg);
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goto fail;
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}
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slot = rslot;
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resource_list_add(&ddi->ddi_rl, SYS_RES_MEMORY, i, base,
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base + reg[i].sbr_size, reg[i].sbr_size);
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}
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OF_prop_free(reg);
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if (slot != dsc->sc_slot) {
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device_printf(dev, "<%s>: parent and child slot do not match\n",
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ddi->ddi_obdinfo.obd_name);
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goto fail;
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}
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/*
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* The `interrupts' property contains the SBus interrupt level.
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*/
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nintr = OF_getprop_alloc_multi(node, "interrupts", sizeof(*intr),
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(void **)&intr);
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if (nintr != -1) {
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for (i = 0; i < nintr; i++) {
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iv = intr[i];
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/*
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* SBus card devices need the slot number encoded into
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* the vector as this is generally not done.
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*/
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if ((iv & INTMAP_OBIO_MASK) == 0)
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iv |= slot << 3;
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/* Set the IGN as appropriate. */
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iv |= dsc->sc_ign << INTMAP_IGN_SHIFT;
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resource_list_add(&ddi->ddi_rl, SYS_RES_IRQ, i,
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iv, iv, 1);
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}
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OF_prop_free(intr);
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}
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return (ddi);
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fail:
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dma_destroy_dinfo(ddi);
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return (NULL);
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}
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static void
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dma_destroy_dinfo(struct dma_devinfo *dinfo)
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{
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resource_list_free(&dinfo->ddi_rl);
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ofw_bus_gen_destroy_devinfo(&dinfo->ddi_obdinfo);
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free(dinfo, M_DEVBUF);
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}
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static int
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dma_print_child(device_t dev, device_t child)
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{
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int rv;
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rv = bus_print_child_header(dev, child);
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rv += dma_print_res(device_get_ivars(child));
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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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dma_probe_nomatch(device_t dev, device_t child)
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{
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const char *type;
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device_printf(dev, "<%s>", ofw_bus_get_name(child));
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dma_print_res(device_get_ivars(child));
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type = ofw_bus_get_type(child);
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printf(" type %s (no driver attached)\n",
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type != NULL ? type : "unknown");
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}
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static struct resource_list *
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dma_get_resource_list(device_t dev, device_t child)
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{
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struct dma_devinfo *ddi;
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ddi = device_get_ivars(child);
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return (&ddi->ddi_rl);
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}
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static const struct ofw_bus_devinfo *
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dma_get_devinfo(device_t bus, device_t child)
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{
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struct dma_devinfo *ddi;
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ddi = device_get_ivars(child);
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return (&ddi->ddi_obdinfo);
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}
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static int
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dma_print_res(struct dma_devinfo *ddi)
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{
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int rv;
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rv = 0;
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rv += resource_list_print_type(&ddi->ddi_rl, "mem", SYS_RES_MEMORY,
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"%#jx");
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rv += resource_list_print_type(&ddi->ddi_rl, "irq", SYS_RES_IRQ, "%jd");
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return (rv);
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}
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