1bba41a506
is that the JBus to EBus bridges share the interrupt controller of a sibling JBus to PCIe bridge (at least as far as the OFW device tree is concerned, in reality they are part of the same chip) so we have to probe and attach the latter first. That happens to be also the case due to the fact that the JBus to PCIe bridges appear first in the OFW device tree but it doesn't hurt to ensure the right order.
422 lines
13 KiB
C
422 lines
13 KiB
C
/* $OpenBSD: dma_sbus.c,v 1.12 2005/03/03 01:41:45 miod Exp $ */
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/* $NetBSD: dma_sbus.c,v 1.5 2000/07/09 20:57:42 pk Exp $ */
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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_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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KOBJMETHOD_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", 1,
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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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free(cabletype, M_OFWPROP);
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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_32BIT, /* maxsize */
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0, /* nsegments */
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BUS_SPACE_MAXSIZE_32BIT, /* 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(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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free(reg, M_OFWPROP);
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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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free(reg, M_OFWPROP);
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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(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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free(intr, M_OFWPROP);
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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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"%#lx");
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rv += resource_list_print_type(&ddi->ddi_rl, "irq", SYS_RES_IRQ, "%ld");
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return (rv);
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}
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