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/*-
* Copyright (c) 2010 Aleksandr Rybalko.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/interrupt.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/rman.h>
#include <sys/malloc.h>
#include <machine/bus.h>
#include <mips/rt305x/rt305xreg.h>
#include <mips/rt305x/rt305x_sysctlvar.h>
static int rt305x_sysctl_probe(device_t);
static int rt305x_sysctl_attach(device_t);
static int rt305x_sysctl_detach(device_t);
static struct rt305x_sysctl_softc *rt305x_sysctl_softc = NULL;
static void
rt305x_sysctl_dump_config(device_t dev)
{
uint32_t val;
#define DUMPREG(r) \
val = rt305x_sysctl_get(r); printf(" " #r "=%#08x\n", val)
val = rt305x_sysctl_get(SYSCTL_CHIPID0_3);
printf("\tChip ID: \"%c%c%c%c",
(val >> 0 ) & 0xff,
(val >> 8 ) & 0xff,
(val >> 16) & 0xff,
(val >> 24) & 0xff);
val = rt305x_sysctl_get(SYSCTL_CHIPID4_7);
printf("%c%c%c%c\"\n",
(val >> 0 ) & 0xff,
(val >> 8 ) & 0xff,
(val >> 16) & 0xff,
(val >> 24) & 0xff);
DUMPREG(SYSCTL_SYSCFG);
if ( val & SYSCTL_SYSCFG_INIC_EE_SDRAM)
printf("\tGet SDRAM config from EEPROM\n");
if ( val & SYSCTL_SYSCFG_INIC_8MB_SDRAM)
printf("\tBootstrap flag is set\n");
printf("\tGE0 mode %u\n",
((val & SYSCTL_SYSCFG_GE0_MODE_MASK) >>
SYSCTL_SYSCFG_GE0_MODE_SHIFT));
if ( val & SYSCTL_SYSCFG_BOOT_ADDR_1F00)
printf("\tBoot from 0x1f000000\n");
if ( val & SYSCTL_SYSCFG_BYPASS_PLL)
printf("\tBypass PLL\n");
if ( val & SYSCTL_SYSCFG_BIG_ENDIAN)
printf("\tBig Endian\n");
if ( val & SYSCTL_SYSCFG_CPU_CLK_SEL_384MHZ)
printf("\tClock is 384MHz\n");
printf("\tBoot from %u\n",
((val & SYSCTL_SYSCFG_BOOT_FROM_MASK) >>
SYSCTL_SYSCFG_BOOT_FROM_SHIFT));
printf("\tBootstrap test code %u\n",
((val & SYSCTL_SYSCFG_TEST_CODE_MASK) >>
SYSCTL_SYSCFG_TEST_CODE_SHIFT));
printf("\tSRAM_CS mode %u\n",
((val & SYSCTL_SYSCFG_SRAM_CS_MODE_MASK) >>
SYSCTL_SYSCFG_SRAM_CS_MODE_SHIFT));
printf("\t%umA SDRAM_CLK driving\n",
(val & SYSCTL_SYSCFG_SDRAM_CLK_DRV)?12:8);
DUMPREG(SYSCTL_CLKCFG0);
printf("\tSDRAM_CLK_SKEW %uns\n", (val >> 30) & 0x03);
DUMPREG(SYSCTL_CLKCFG1);
if ( val & SYSCTL_CLKCFG1_PBUS_DIV_CLK_BY2)
printf("\tPbus clock is 1/2 of System clock\n");
if ( val & SYSCTL_CLKCFG1_OTG_CLK_EN)
printf("\tUSB OTG clock is enabled\n");
if ( val & SYSCTL_CLKCFG1_I2S_CLK_EN)
printf("\tI2S clock is enabled\n");
printf("\tI2S clock is %s\n",
(val & SYSCTL_CLKCFG1_I2S_CLK_SEL_EXT)?
"external":"internal 15.625MHz");
printf("\tI2S clock divider %u\n",
((val & SYSCTL_CLKCFG1_I2S_CLK_DIV_MASK) >>
SYSCTL_CLKCFG1_I2S_CLK_DIV_SHIFT));
if ( val & SYSCTL_CLKCFG1_PCM_CLK_EN)
printf("\tPCM clock is enabled\n");
printf("\tPCM clock is %s\n",
(val & SYSCTL_CLKCFG1_PCM_CLK_SEL_EXT)?
"external":"internal 15.625MHz");
printf("\tPCM clock divider %u\n",
((val & SYSCTL_CLKCFG1_PCM_CLK_DIV_MASK) >>
SYSCTL_CLKCFG1_PCM_CLK_DIV_SHIFT));
DUMPREG(SYSCTL_GPIOMODE);
#undef DUMPREG
return;
}
static int
rt305x_sysctl_probe(device_t dev)
{
device_set_desc(dev, "RT305X System Control driver");
return (0);
}
static int
rt305x_sysctl_attach(device_t dev)
{
struct rt305x_sysctl_softc *sc = device_get_softc(dev);
int error = 0;
KASSERT((device_get_unit(dev) == 0),
("rt305x_sysctl: Only one sysctl module supported"));
if (rt305x_sysctl_softc != NULL)
return (ENXIO);
rt305x_sysctl_softc = sc;
/* Map control/status registers. */
sc->mem_rid = 0;
sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&sc->mem_rid, RF_ACTIVE);
if (sc->mem_res == NULL) {
device_printf(dev, "couldn't map memory\n");
error = ENXIO;
rt305x_sysctl_detach(dev);
return(error);
}
#ifdef notyet
sc->irq_rid = 0;
if ((sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&sc->irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) {
device_printf(dev, "unable to allocate IRQ resource\n");
return (ENXIO);
}
if ((bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC,
rt305x_sysctl_intr, NULL, sc, &sc->sysctl_ih))) {
device_printf(dev,
"WARNING: unable to register interrupt handler\n");
return (ENXIO);
}
#endif
rt305x_sysctl_dump_config(dev);
return (bus_generic_attach(dev));
}
static int
rt305x_sysctl_detach(device_t dev)
{
struct rt305x_sysctl_softc *sc = device_get_softc(dev);
bus_generic_detach(dev);
if (sc->mem_res)
bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid,
sc->mem_res);
#ifdef notyet
if (sc->irq_res)
bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid,
sc->irq_res);
#endif
return(0);
}
#ifdef notyet
static int
rt305x_sysctl_intr(void *arg)
{
return (FILTER_HANDLED);
}
#endif
uint32_t
rt305x_sysctl_get(uint32_t reg)
{
struct rt305x_sysctl_softc *sc = rt305x_sysctl_softc;
return (bus_read_4(sc->mem_res, reg));
}
void
rt305x_sysctl_set(uint32_t reg, uint32_t val)
{
struct rt305x_sysctl_softc *sc = rt305x_sysctl_softc;
bus_write_4(sc->mem_res, reg, val);
return;
}
static device_method_t rt305x_sysctl_methods[] = {
DEVMETHOD(device_probe, rt305x_sysctl_probe),
DEVMETHOD(device_attach, rt305x_sysctl_attach),
DEVMETHOD(device_detach, rt305x_sysctl_detach),
{0, 0},
};
static driver_t rt305x_sysctl_driver = {
"rt305x_sysctl",
rt305x_sysctl_methods,
sizeof(struct rt305x_sysctl_softc),
};
static devclass_t rt305x_sysctl_devclass;
DRIVER_MODULE(rt305x_sysctl, obio, rt305x_sysctl_driver, rt305x_sysctl_devclass, 0, 0);
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