470 lines
14 KiB
C
470 lines
14 KiB
C
/* $Id: omap2_obio.c,v 1.22 2015/04/14 18:37:43 bouyer Exp $ */
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/* adapted from: */
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/* $NetBSD: omap2_obio.c,v 1.22 2015/04/14 18:37:43 bouyer Exp $ */
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/*
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* Autoconfiguration support for the Texas Instruments OMAP "On Board" I/O.
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*
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* Based on arm/omap/omap_emifs.c which in turn was derived
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* Based on arm/xscale/pxa2x0.c which in turn was derived
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* from arm/sa11x0/sa11x0.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 "opt_omap.h"
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: omap2_obio.c,v 1.22 2015/04/14 18:37:43 bouyer Exp $");
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#include "locators.h"
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#include "obio.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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#include <arm/omap/omap_var.h>
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#include <arm/omap/omap2_obioreg.h>
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#include <arm/omap/omap2_obiovar.h>
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typedef struct {
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boolean_t cs_valid;
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ulong cs_addr;
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ulong cs_size;
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} obio_csconfig_t;
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/* global containing the base system frequency */
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#ifdef OMAP_MPU_TIMER_CLOCK_FREQ
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u_int omap_sys_clk = OMAP_MPU_TIMER_CLOCK_FREQ;
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#else
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u_int omap_sys_clk;
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#endif
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/* prototypes */
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static int obio_match(device_t, cfdata_t, void *);
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static void obio_attach(device_t, device_t, void *);
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static int obio_search(device_t, cfdata_t, const int *, void *);
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static int obio_find(device_t, cfdata_t, const int *, void *);
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static int obio_print(void *, const char *);
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static void obio_attach_critical(struct obio_softc *);
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/* attach structures */
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CFATTACH_DECL_NEW(obio, sizeof(struct obio_softc),
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obio_match, obio_attach, NULL, NULL);
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static uint8_t obio_attached;
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static int
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obio_match(device_t parent, cfdata_t match, void *aux)
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{
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struct mainbus_attach_args *mb = aux;
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#ifdef OMAP2_OBIO_0_BASE
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if (mb->mb_iobase == OMAP2_OBIO_0_BASE
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&& mb->mb_iosize == OMAP2_OBIO_0_SIZE
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&& (obio_attached & 1) == 0)
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return 1;
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#endif
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#ifdef OMAP2_OBIO_1_BASE
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if (mb->mb_iobase == OMAP2_OBIO_1_BASE
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&& mb->mb_iosize == OMAP2_OBIO_1_SIZE
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&& (obio_attached & 2) == 0)
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return 1;
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#endif
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#ifdef OMAP2_OBIO_2_BASE
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if (mb->mb_iobase == OMAP2_OBIO_2_BASE
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&& mb->mb_iosize == OMAP2_OBIO_2_SIZE
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&& (obio_attached & 4) == 0)
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return 1;
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#endif
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#ifdef OMAP2_OBIO_3_BASE
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if (mb->mb_iobase == OMAP2_OBIO_3_BASE
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&& mb->mb_iosize == OMAP2_OBIO_3_SIZE
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&& (obio_attached & 8) == 0)
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return 1;
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#endif
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#ifdef TI_AM335X
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if (obio_attached == 0)
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return 1;
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#endif
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return 0;
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}
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static void
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obio_attach1(device_t self)
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{
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/*
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* Attach the rest of our devices
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*/
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config_search_ia(obio_search, self, "obio", NULL);
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}
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static void
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obio_attach(device_t parent, device_t self, void *aux)
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{
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struct obio_softc *sc = device_private(self);
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struct mainbus_attach_args *mb = (struct mainbus_attach_args *)aux;
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sc->sc_dev = self;
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sc->sc_iot = &omap_bs_tag;
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aprint_normal(": On-Board IO\n");
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sc->sc_ioh = 0;
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sc->sc_dmat = &omap_bus_dma_tag;
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sc->sc_base = mb->mb_iobase;
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sc->sc_size = mb->mb_iosize;
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#ifdef OMAP2_OBIO_0_BASE
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if (mb->mb_iobase == OMAP2_OBIO_0_BASE)
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obio_attached |= 1;
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#endif
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#ifdef OMAP2_OBIO_1_BASE
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else if (mb->mb_iobase == OMAP2_OBIO_1_BASE)
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obio_attached |= 2;
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#endif
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#ifdef OMAP2_OBIO_2_BASE
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else if (mb->mb_iobase == OMAP2_OBIO_2_BASE)
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obio_attached |= 4;
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#endif
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#ifdef OMAP2_OBIO_3_BASE
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else if (mb->mb_iobase == OMAP2_OBIO_3_BASE)
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obio_attached |= 8;
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#endif
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#ifdef TI_AM335X
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obio_attached = 1;
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#endif
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/*
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* Attach critical devices first.
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*/
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obio_attach_critical(sc);
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/*
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* Attach the rest of our devices once all obio devices
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* have attached.
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*/
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config_defer(self, obio_attach1);
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}
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static int
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obio_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
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{
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struct obio_softc * const sc = device_private(parent);
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struct obio_attach_args oa;
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/* Set up the attach args. */
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if (cf->cf_loc[OBIOCF_NOBYTEACC] == 1) {
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if (cf->cf_loc[OBIOCF_MULT] == 1)
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oa.obio_iot = &nobyteacc_bs_tag;
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else
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panic("nobyteacc specified for device with "
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"non-byte multiplier\n");
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} else {
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switch (cf->cf_loc[OBIOCF_MULT]) {
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case 1:
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oa.obio_iot = &omap_bs_tag;
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break;
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case 2:
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oa.obio_iot = &omap_a2x_bs_tag;
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break;
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case 4:
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oa.obio_iot = &omap_a4x_bs_tag;
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break;
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default:
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panic("Unsupported EMIFS multiplier.");
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break;
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}
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}
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oa.obio_dmat = sc->sc_dmat;
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oa.obio_addr = cf->cf_loc[OBIOCF_ADDR];
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oa.obio_size = cf->cf_loc[OBIOCF_SIZE];
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oa.obio_intr = cf->cf_loc[OBIOCF_INTR];
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oa.obio_intrbase = cf->cf_loc[OBIOCF_INTRBASE];
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oa.obio_edmabase = cf->cf_loc[OBIOCF_EDMABASE];
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#if defined(OMAP2)
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if ((oa.obio_addr >= sc->sc_base)
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&& (oa.obio_addr < (sc->sc_base + sc->sc_size))) {
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/* XXX
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* if size was specified, then check it too
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* otherwise just assume it is OK
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*/
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if ((oa.obio_size != OBIOCF_SIZE_DEFAULT)
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&& ((oa.obio_addr + oa.obio_size)
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>= (sc->sc_base + sc->sc_size)))
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return 1; /* NG */
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if (config_match(parent, cf, &oa)) {
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config_attach(parent, cf, &oa, obio_print);
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return 0; /* love it */
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}
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}
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#endif
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return UNCONF; /* NG */
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}
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static int
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obio_find(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
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{
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struct obio_attach_args * const oa = aux;
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if (oa->obio_addr != OBIOCF_ADDR_DEFAULT
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&& oa->obio_addr != cf->cf_loc[OBIOCF_ADDR])
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return 0;
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if (oa->obio_size != OBIOCF_SIZE_DEFAULT
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&& oa->obio_size != cf->cf_loc[OBIOCF_SIZE])
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return 0;
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if (oa->obio_intr != OBIOCF_INTR_DEFAULT
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&& oa->obio_intr != cf->cf_loc[OBIOCF_INTR])
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return 0;
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if (oa->obio_intrbase != OBIOCF_INTRBASE_DEFAULT
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&& oa->obio_intrbase != cf->cf_loc[OBIOCF_INTRBASE])
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return 0;
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/* Set up the attach args. */
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if (cf->cf_loc[OBIOCF_NOBYTEACC] == 1) {
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if (cf->cf_loc[OBIOCF_MULT] == 1)
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oa->obio_iot = &nobyteacc_bs_tag;
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else
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panic("nobyteacc specified for device with "
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"non-byte multiplier\n");
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} else {
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switch (cf->cf_loc[OBIOCF_MULT]) {
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case 1:
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oa->obio_iot = &omap_bs_tag;
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break;
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case 2:
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oa->obio_iot = &omap_a2x_bs_tag;
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break;
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case 4:
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oa->obio_iot = &omap_a4x_bs_tag;
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break;
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default:
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panic("Unsupported EMIFS multiplier.");
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break;
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}
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}
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oa->obio_addr = cf->cf_loc[OBIOCF_ADDR];
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oa->obio_size = cf->cf_loc[OBIOCF_SIZE];
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oa->obio_intr = cf->cf_loc[OBIOCF_INTR];
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oa->obio_intrbase = cf->cf_loc[OBIOCF_INTRBASE];
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oa->obio_edmabase = cf->cf_loc[OBIOCF_EDMABASE];
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return config_match(parent, cf, oa);
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}
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#if 0 && NOMAP2ICU == 0
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#error no avic present in config file
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#endif
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static const struct {
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const char *name;
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bus_addr_t addr;
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bool required;
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} critical_devs[] = {
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#if defined(OMAP_2430) || defined(OMAP_2420)
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{ .name = "avic", .addr = INTC_BASE, .required = true },
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#endif
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#if defined(OMAP_3430)
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{ .name = "avic", .addr = INTC_BASE_3430, .required = true },
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#endif
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#if defined(OMAP_3530)
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{ .name = "avic", .addr = INTC_BASE_3530, .required = true },
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#endif
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{ .name = "gpio1", .addr = GPIO1_BASE, .required = false },
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{ .name = "gpio2", .addr = GPIO2_BASE, .required = false },
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{ .name = "gpio3", .addr = GPIO3_BASE, .required = false },
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#if defined(GPIO4_BASE)
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{ .name = "gpio4", .addr = GPIO4_BASE, .required = false },
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#endif
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#if defined(GPIO5_BASE)
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{ .name = "gpio5", .addr = GPIO5_BASE, .required = false },
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#endif
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#if defined(GPIO6_BASE)
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{ .name = "gpio6", .addr = GPIO6_BASE, .required = false },
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#endif
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#if defined(GPIO7_BASE)
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{ .name = "gpio7", .addr = GPIO7_BASE, .required = false },
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#endif
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#if defined(GPIO8_BASE)
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{ .name = "gpio8", .addr = GPIO8_BASE, .required = false },
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#endif
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#if 0
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{ .name = "dmac", .addr = DMAC_BASE, .required = true },
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#endif
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#if defined(TI_AM335X)
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{ .name = "omapicu", .addr = 0x48200000, .required = true },
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{ .name = "prcm", .addr = 0x44e00000, .required = true },
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{ .name = "sitaracm", .addr = 0x44e10000, .required = true },
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{ .name = "edma", .addr = 0x49000000, .required = false },
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#endif
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#if defined(OMAP_3530)
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{ .name = "omapdma", .addr = OMAP3530_SDMA_BASE, .required = true },
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#endif
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};
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static void
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obio_attach_critical(struct obio_softc *sc)
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{
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struct obio_attach_args oa;
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cfdata_t cf;
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size_t i;
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for (i = 0; i < __arraycount(critical_devs); i++) {
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oa.obio_iot = sc->sc_iot;
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#ifdef NOTYET
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oa.obio_dmat = sc->sc_dmat;
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#endif
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oa.obio_addr = critical_devs[i].addr;
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oa.obio_size = OBIOCF_SIZE_DEFAULT;
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oa.obio_intr = OBIOCF_INTR_DEFAULT;
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oa.obio_intrbase = OBIOCF_INTRBASE_DEFAULT;
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if (oa.obio_addr != OBIOCF_ADDR_DEFAULT
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&& (oa.obio_addr < sc->sc_base
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|| oa.obio_addr >= sc->sc_base + sc->sc_size))
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continue;
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cf = config_search_ia(obio_find, sc->sc_dev, "obio", &oa);
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if (cf == NULL) {
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if (critical_devs[i].required)
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panic(
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"obio_attach_critical: failed to find %s!",
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critical_devs[i].name);
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continue;
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}
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if (oa.obio_size == OBIOCF_SIZE_DEFAULT)
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oa.obio_size = cf->cf_loc[OBIOCF_SIZE];
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if (oa.obio_intr == OBIOCF_INTR_DEFAULT)
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oa.obio_intr = cf->cf_loc[OBIOCF_INTR];
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if (oa.obio_intrbase == OBIOCF_INTRBASE_DEFAULT)
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oa.obio_intrbase = cf->cf_loc[OBIOCF_INTRBASE];
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config_attach(sc->sc_dev, cf, &oa, obio_print);
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}
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}
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static int
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obio_print(void *aux, const char *name)
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{
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struct obio_attach_args *oa = (struct obio_attach_args*)aux;
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if (oa->obio_addr != OBIOCF_ADDR_DEFAULT) {
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aprint_normal(" addr 0x%08lx", oa->obio_addr);
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if (oa->obio_size != OBIOCF_SIZE_DEFAULT)
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aprint_normal("-0x%08lx",
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oa->obio_addr + oa->obio_size-1);
|
|
}
|
|
if (oa->obio_intr != OBIOCF_INTR_DEFAULT)
|
|
aprint_normal(" intr %d", oa->obio_intr);
|
|
if (oa->obio_intrbase != OBIOCF_INTRBASE_DEFAULT)
|
|
aprint_normal(" intrbase %d", oa->obio_intrbase);
|
|
|
|
return UNCONF;
|
|
}
|