249 lines
9.0 KiB
C
249 lines
9.0 KiB
C
/* $NetBSD: omap_tipb.c,v 1.6 2013/10/02 16:48:26 matt Exp $ */
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/*
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* Autoconfiguration support for the Texas Instruments OMAP TIPB.
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* Based on arm/xscale/pxa2x0.c which in turn was derived from
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* arm/sa11x0/sa11x0.c. The code to do the early attach was initially derived
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* from arch/sparc/dev/obio.c.
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*
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* Copyright (c) 2002, 2005 Genetec Corporation. All rights reserved.
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* Written by Hiroyuki Bessho for Genetec Corporation.
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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 for the NetBSD Project by
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* Genetec Corporation.
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* 4. The name of Genetec Corporation may not be used to endorse or
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* promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
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* 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 GENETEC CORPORATION
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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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* Copyright (c) 1997, 1998, 2001, 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 IWAMOTO Toshihiro, Ichiro FUKUHARA and 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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* Copyright (c) 1999
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* Shin Takemura and PocketBSD Project. 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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* 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 PocketBSD project
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* and its contributors.
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* 4. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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__KERNEL_RCSID(0, "$NetBSD: omap_tipb.c,v 1.6 2013/10/02 16:48:26 matt Exp $");
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#include "locators.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/kernel.h>
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#include <sys/reboot.h>
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#include <machine/cpu.h>
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#include <sys/bus.h>
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#include <arm/cpufunc.h>
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#include <arm/mainbus/mainbus.h>
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/*
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* XXX. Do we really need this ? #include <arm/omap/omap_reg.h>
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* Atleast commenting this makes it more generic.
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*/
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#include <arm/omap/omap_tipb.h>
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struct tipb_softc {
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device_t sc_dev;
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bus_dma_tag_t sc_dmac;
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};
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/* prototypes */
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static int tipb_match(device_t, cfdata_t, void *);
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static void tipb_attach(device_t, device_t, void *);
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static int tipb_search(device_t, cfdata_t, const int *, void *);
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static int tipb_print(void *, const char *);
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/* attach structures */
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CFATTACH_DECL_NEW(tipb, sizeof(struct tipb_softc),
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tipb_match, tipb_attach, NULL, NULL);
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static int tipb_attached;
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/*
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* There are some devices that need to be set up before all the others. The
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* earlies array contains their names. tipb_attach() and tipb_search() work
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* together to attach these devices in the order they appear in this array
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* before any other TIPB devices are attached.
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*/
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static const char * const earlies[] = {
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OMAP_INTC_DEVICE,
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"omapmputmr",
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NULL
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};
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static int
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tipb_match(device_t parent, cfdata_t match, void *aux)
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{
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if (tipb_attached)
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return 0;
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return 1;
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}
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static void
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tipb_attach(device_t parent, device_t self, void *aux)
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{
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struct tipb_softc *sc = device_private(self);
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tipb_attached = 1;
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#if NOMAPDMAC > 0
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#error DMA not implemented
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sc->sc_dmac = &omap_bus_dma_tag;
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#else
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sc->sc_dmac = NULL;
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#endif
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aprint_normal(": Texas Instruments Peripheral Bus\n");
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aprint_naive("\n");
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/*
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* There are some devices that need to be set up before all the
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* others. The earlies array contains their names. Find them and
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* attach them in the order they appear in the array.
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*/
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const char *const *earlyp;
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for (earlyp = earlies; *earlyp != NULL; earlyp++)
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/*
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* The bus search function is passed an aux argument that
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* "describes the device that has been found". The type of it
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* is void *. However, I want to pass a constant string, so
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* use __UNCONST to convince the compiler that this is ok.
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*/
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config_search_ia(tipb_search, self, "tipb",
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__UNCONST(*earlyp));
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/*
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* Attach all other devices
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*/
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config_search_ia(tipb_search, self, "tipb", NULL);
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}
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static int
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tipb_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
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{
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struct tipb_softc *sc = device_private(parent);
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struct tipb_attach_args aa;
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const char *const name = (const char *const)aux;
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/* Check whether we're looking for a specifically named device */
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if (name != NULL && strcmp(name, cf->cf_name) != 0)
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return (0);
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switch (cf->cf_loc[TIPBCF_MULT]) {
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case 1:
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aa.tipb_iot = &omap_bs_tag;
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break;
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case 2:
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aa.tipb_iot = &omap_a2x_bs_tag;
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break;
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case 4:
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aa.tipb_iot = &omap_a4x_bs_tag;
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break;
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default:
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panic("Unsupported TIPB multiplier.");
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break;
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}
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aa.tipb_dmac = sc->sc_dmac;
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aa.tipb_addr = cf->cf_loc[TIPBCF_ADDR];
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aa.tipb_size = cf->cf_loc[TIPBCF_SIZE];
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aa.tipb_intr = cf->cf_loc[TIPBCF_INTR];
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aa.tipb_mult = cf->cf_loc[TIPBCF_MULT];
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if (config_match(parent, cf, &aa))
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config_attach(parent, cf, &aa, tipb_print);
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return 0;
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}
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static int
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tipb_print(void *aux, const char *name)
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{
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struct tipb_attach_args *sa = (struct tipb_attach_args*)aux;
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if (sa->tipb_addr != TIPBCF_ADDR_DEFAULT) {
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aprint_normal(" addr 0x%08lx", sa->tipb_addr);
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if (sa->tipb_size > TIPBCF_SIZE_DEFAULT)
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aprint_normal("-0x%08lx", sa->tipb_addr + sa->tipb_size-1);
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}
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if (sa->tipb_intr != TIPBCF_INTR_DEFAULT)
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aprint_normal(" intr %d", sa->tipb_intr);
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return (UNCONF);
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}
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