/*
* Autoconfiguration support for the Texas Instruments OMAP TIPB.
* Based on arm/xscale/pxa2x0.c which in turn was derived from
* arm/sa11x0/sa11x0.c. The code to do the early attach was initially derived
* from arch/sparc/dev/obio.c.
*
* Copyright (c) 2002, 2005 Genetec Corporation. All rights reserved.
* Written by Hiroyuki Bessho for Genetec Corporation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Genetec Corporation.
* 4. The name of Genetec Corporation may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GENETEC CORPORATION
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Copyright (c) 1997, 1998, 2001, The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by IWAMOTO Toshihiro, Ichiro FUKUHARA and Paul Kranenburg.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Copyright (c) 1999
* Shin Takemura and PocketBSD Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the PocketBSD project
* and its contributors.
* 4. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: omapl1x_tipb.c,v 1.1 2013/10/02 16:48:26 matt Exp $");
#include "locators.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/reboot.h>
#include <sys/bus.h>
#include <machine/cpu.h>
#include <arm/cpufunc.h>
#include <arm/mainbus/mainbus.h>
/*
* XXX. Do we really need this ? #include <arm/omap/omap_reg.h>
* Atleast commenting this makes it more generic.
*/
#include <arm/omap/omap_tipb.h>
#include <arm/omap/omap_var.h>
struct tipb_softc {
struct device sc_dev;
bus_dma_tag_t sc_dmac;
};
/* prototypes */
static int tipb_match(struct device *, struct cfdata *, void *);
static void tipb_attach(struct device *, struct device *, void *);
static int tipb_search(struct device *, struct cfdata *,
const int *, void *);
static int tipb_print(void *, const char *);
/* attach structures */
CFATTACH_DECL_NEW(tipb, sizeof(struct tipb_softc),
tipb_match, tipb_attach, NULL, NULL);
static int tipb_attached;
extern struct arm32_bus_dma_tag omapl1x_bus_dma_tag;
/*
* There are some devices that need to be set up before all the others. The
* earlies array contains their names. tipb_attach() and tipb_search() work
* together to attach these devices in the order they appear in this array
* before any other TIPB devices are attached.
*/
static const char * const earlies[] = {
OMAP_INTC_DEVICE,
"omapl1xtimer",
"omapl1xpsc",
NULL
};
static int
tipb_match(struct device *parent, struct cfdata *match, void *aux)
{
if (tipb_attached)
return 0;
return 1;
}
static void
tipb_attach(struct device *parent, struct device *self, void *aux)
{
struct tipb_softc *sc = (struct tipb_softc *)self;
tipb_attached = 1;
#if NOMAPDMAC > 0
#error DMA not implemented
sc->sc_dmac = &omap_bus_dma_tag;
#else
sc->sc_dmac = omap_bus_dma_init(&omapl1x_bus_dma_tag);
#endif
aprint_normal(": OMAP L1X Texas Instruments Peripheral Bus\n");
aprint_naive("\n");
/*
* There are some devices that need to be set up before all the
* others. The earlies array contains their names. Find them and
* attach them in the order they appear in the array.
*/
const char *const *earlyp;
for (earlyp = earlies; *earlyp != NULL; earlyp++)
/*
* The bus search function is passed an aux argument that
* "describes the device that has been found". The type of it
* is void *. However, I want to pass a constant string, so
* use __UNCONST to convince the compiler that this is ok.
*/
config_search_ia(tipb_search, self, "tipb",
__UNCONST(*earlyp));
/*
* Attach all other devices
*/
config_search_ia(tipb_search, self, "tipb", NULL);
}
static int
tipb_search(struct device *parent, struct cfdata *cf,
const int *ldesc, void *aux)
{
struct tipb_softc *sc = (struct tipb_softc *)parent;
struct tipb_attach_args aa;
const char *const name = (const char *const)aux;
/* Check whether we're looking for a specifically named device */
if (name != NULL && strcmp(name, cf->cf_name) != 0)
return (0);
switch (cf->cf_loc[TIPBCF_MULT]) {
case 1:
aa.tipb_iot = &omap_bs_tag;
break;
case 2:
aa.tipb_iot = &omap_a2x_bs_tag;
break;
case 4:
aa.tipb_iot = &omap_a4x_bs_tag;
break;
default:
panic("Unsupported TIPB multiplier.");
break;
}
aa.tipb_dmac = sc->sc_dmac;
aa.tipb_addr = cf->cf_loc[TIPBCF_ADDR];
aa.tipb_size = cf->cf_loc[TIPBCF_SIZE];
aa.tipb_intr = cf->cf_loc[TIPBCF_INTR];
aa.tipb_mult = cf->cf_loc[TIPBCF_MULT];
if (config_match(parent, cf, &aa))
config_attach(parent, cf, &aa, tipb_print);
return 0;
}
static int
tipb_print(void *aux, const char *name)
{
struct tipb_attach_args *sa = (struct tipb_attach_args*)aux;
if (sa->tipb_addr != TIPBCF_ADDR_DEFAULT) {
aprint_normal(" addr 0x%08lx", sa->tipb_addr);
if (sa->tipb_size > TIPBCF_SIZE_DEFAULT)
aprint_normal("-0x%08lx", sa->tipb_addr + sa->tipb_size-1);
}
if (sa->tipb_intr != TIPBCF_INTR_DEFAULT)
aprint_normal(" intr %d", sa->tipb_intr);
return (UNCONF);
}