313 lines
10 KiB
C
313 lines
10 KiB
C
/* $NetBSD: imx31_ahb.c,v 1.3 2008/05/02 22:00:29 martin Exp $ */
|
|
|
|
/*
|
|
* 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.
|
|
*
|
|
*
|
|
* Autoconfiguration support for the Intel PXA2[15]0 application
|
|
* processor. This code is derived from arm/sa11x0/sa11x0.c
|
|
*/
|
|
|
|
/*-
|
|
* Copyright (c) 2001, The NetBSD Foundation, Inc. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by IWAMOTO Toshihiro and Ichiro FUKUHARA.
|
|
*
|
|
* 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, "$Id: imx31_ahb.c,v 1.3 2008/05/02 22:00:29 martin Exp $");
|
|
|
|
#include "locators.h"
|
|
#include "avic.h"
|
|
#include "imxgpio.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/device.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/reboot.h>
|
|
|
|
#include <machine/cpu.h>
|
|
#include <machine/bus.h>
|
|
|
|
#include <arm/cpufunc.h>
|
|
#include <arm/mainbus/mainbus.h>
|
|
|
|
#include <machine/intr.h>
|
|
|
|
#include <arm/imx/imx31reg.h>
|
|
#include <arm/imx/imx31var.h>
|
|
|
|
struct ahb_softc {
|
|
struct device sc_dev;
|
|
bus_dma_tag_t sc_dmat;
|
|
bus_space_tag_t sc_memt;
|
|
bus_space_handle_t sc_memh;
|
|
};
|
|
|
|
/* prototypes */
|
|
static int ahb_match(device_t, cfdata_t, void *);
|
|
static void ahb_attach(device_t, device_t, void *);
|
|
static int ahb_search(device_t, cfdata_t, const int *, void *);
|
|
static void ahb_attach_critical(struct ahb_softc *);
|
|
static int ahbbus_print(void *, const char *);
|
|
|
|
/* attach structures */
|
|
CFATTACH_DECL(ahb, sizeof(struct ahb_softc),
|
|
ahb_match, ahb_attach, NULL, NULL);
|
|
|
|
static struct ahb_softc *ahb_sc;
|
|
|
|
static int
|
|
ahb_match(device_t parent, cfdata_t match, void *aux)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
ahb_attach(device_t parent, device_t self, void *aux)
|
|
{
|
|
struct ahb_softc *sc = (struct ahb_softc *)self;
|
|
extern struct bus_space imx31_bs_tag;
|
|
struct ahb_attach_args ahba;
|
|
|
|
ahb_sc = sc;
|
|
sc->sc_memt = &imx31_bs_tag;
|
|
#if NBUS_DMA_GENERIC > 0
|
|
sc->sc_dmat = &imx31_bus_dma_tag;
|
|
#else
|
|
sc->sc_dmat = 0;
|
|
#endif
|
|
|
|
aprint_normal(": AHB-Lite 2.v6 bus interface\n");
|
|
|
|
/*
|
|
* Attach critical devices
|
|
*/
|
|
ahb_attach_critical(sc);
|
|
|
|
/*
|
|
* Attach all other devices
|
|
*/
|
|
ahba.ahba_name = "ahb";
|
|
ahba.ahba_memt = sc->sc_memt;
|
|
ahba.ahba_dmat = sc->sc_dmat;
|
|
config_search_ia(ahb_search, self, "ahb", &ahba);
|
|
}
|
|
|
|
static int
|
|
ahb_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
|
|
{
|
|
struct ahb_attach_args * const ahba = aux;
|
|
|
|
ahba->ahba_addr = cf->cf_loc[AHBCF_ADDR];
|
|
ahba->ahba_size = cf->cf_loc[AHBCF_SIZE];
|
|
ahba->ahba_intr = cf->cf_loc[AHBCF_INTR];
|
|
ahba->ahba_irqbase = cf->cf_loc[AHBCF_IRQBASE];
|
|
|
|
if (config_match(parent, cf, ahba))
|
|
config_attach(parent, cf, ahba, ahbbus_print);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
ahb_find(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
|
|
{
|
|
struct ahb_attach_args * const ahba = aux;
|
|
struct ahb_attach_args ahba0;
|
|
|
|
if (strcmp(ahba->ahba_name, "ahb"))
|
|
return 0;
|
|
if (ahba->ahba_addr != AHBCF_ADDR_DEFAULT
|
|
&& ahba->ahba_addr != cf->cf_loc[AHBCF_ADDR])
|
|
return 0;
|
|
if (ahba->ahba_size != AHBCF_SIZE_DEFAULT
|
|
&& ahba->ahba_size != cf->cf_loc[AHBCF_SIZE])
|
|
return 0;
|
|
if (ahba->ahba_intr != AHBCF_INTR_DEFAULT
|
|
&& ahba->ahba_intr != cf->cf_loc[AHBCF_INTR])
|
|
return 0;
|
|
if (ahba->ahba_irqbase != AHBCF_IRQBASE_DEFAULT
|
|
&& ahba->ahba_irqbase != cf->cf_loc[AHBCF_IRQBASE])
|
|
return 0;
|
|
|
|
ahba0 = *ahba;
|
|
ahba0.ahba_addr = cf->cf_loc[AHBCF_ADDR];
|
|
ahba0.ahba_size = cf->cf_loc[AHBCF_SIZE];
|
|
ahba0.ahba_intr = cf->cf_loc[AHBCF_INTR];
|
|
ahba0.ahba_irqbase = cf->cf_loc[AHBCF_IRQBASE];
|
|
|
|
return config_match(parent, cf, &ahba0);
|
|
}
|
|
|
|
#if NAVIC == 0
|
|
#error no avic present in config file
|
|
#endif
|
|
|
|
static const struct {
|
|
const char *name;
|
|
bus_addr_t addr;
|
|
bool required;
|
|
} critical_devs[] = {
|
|
{ .name = "avic", .addr = INTC_BASE, .required = true },
|
|
{ .name = "gpio1", .addr = GPIO1_BASE, .required = false },
|
|
{ .name = "gpio2", .addr = GPIO2_BASE, .required = false },
|
|
{ .name = "gpio3", .addr = GPIO3_BASE, .required = false },
|
|
#if 0
|
|
{ .name = "dmac", .addr = DMAC_BASE, .required = true },
|
|
#endif
|
|
};
|
|
|
|
static void
|
|
ahb_attach_critical(struct ahb_softc *sc)
|
|
{
|
|
struct ahb_attach_args ahba;
|
|
cfdata_t cf;
|
|
size_t i;
|
|
|
|
for (i = 0; i < __arraycount(critical_devs); i++) {
|
|
ahba.ahba_name = "ahb";
|
|
ahba.ahba_memt = sc->sc_memt;
|
|
ahba.ahba_dmat = sc->sc_dmat;
|
|
|
|
ahba.ahba_addr = critical_devs[i].addr;
|
|
ahba.ahba_size = AHBCF_SIZE_DEFAULT;
|
|
ahba.ahba_intr = AHBCF_INTR_DEFAULT;
|
|
ahba.ahba_irqbase = AHBCF_IRQBASE_DEFAULT;
|
|
|
|
cf = config_search_ia(ahb_find, &sc->sc_dev, "ahb", &ahba);
|
|
if (cf == NULL && critical_devs[i].required)
|
|
panic("ahb_attach_critical: failed to find %s!",
|
|
critical_devs[i].name);
|
|
|
|
ahba.ahba_addr = cf->cf_loc[AHBCF_ADDR];
|
|
ahba.ahba_size = cf->cf_loc[AHBCF_SIZE];
|
|
ahba.ahba_intr = cf->cf_loc[AHBCF_INTR];
|
|
ahba.ahba_irqbase = cf->cf_loc[AHBCF_IRQBASE];
|
|
config_attach(&sc->sc_dev, cf, &ahba, ahbbus_print);
|
|
}
|
|
}
|
|
|
|
static int
|
|
ahbbus_print(void *aux, const char *name)
|
|
{
|
|
struct ahb_attach_args *ahba = (struct ahb_attach_args*)aux;
|
|
|
|
if (ahba->ahba_addr != AHBCF_ADDR_DEFAULT) {
|
|
aprint_normal(" addr 0x%lx", ahba->ahba_addr);
|
|
if (ahba->ahba_size > AHBCF_SIZE_DEFAULT)
|
|
aprint_normal("-0x%lx",
|
|
ahba->ahba_addr + ahba->ahba_size-1);
|
|
}
|
|
if (ahba->ahba_intr != AHBCF_INTR_DEFAULT)
|
|
aprint_normal(" intr %d", ahba->ahba_intr);
|
|
if (ahba->ahba_irqbase != AHBCF_IRQBASE_DEFAULT)
|
|
aprint_normal(" irqbase %d", ahba->ahba_irqbase);
|
|
|
|
return (UNCONF);
|
|
}
|
|
|
|
static inline uint32_t
|
|
read_clock_counter_xsc1(void)
|
|
{
|
|
uint32_t x;
|
|
__asm volatile("mrc p14, 0, %0, c1, c0, 0" : "=r" (x) );
|
|
|
|
return x;
|
|
}
|
|
|
|
static inline uint32_t
|
|
read_clock_counter_xsc2(void)
|
|
{
|
|
uint32_t x;
|
|
__asm volatile("mrc p14, 0, %0, c1, c1, 0" : "=r" (x) );
|
|
|
|
return x;
|
|
}
|
|
|