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author | imp <imp@FreeBSD.org> | 2006-02-17 22:23:36 +0000 |
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committer | imp <imp@FreeBSD.org> | 2006-02-17 22:23:36 +0000 |
commit | a2ac42b55a04d1ecedbc0b89999330e65d5c2368 (patch) | |
tree | 6e3a7913ec75bbc7df9c5e09f22bfb14b14c54ff | |
parent | d0ed011fe8d1a5e4bb7e83fe89968dbc94ede197 (diff) | |
download | FreeBSD-src-a2ac42b55a04d1ecedbc0b89999330e65d5c2368.zip FreeBSD-src-a2ac42b55a04d1ecedbc0b89999330e65d5c2368.tar.gz |
This file was obsolete when committed. Catchup and delete it.
-rw-r--r-- | sys/arm/at91/at91st.c | 215 |
1 files changed, 0 insertions, 215 deletions
diff --git a/sys/arm/at91/at91st.c b/sys/arm/at91/at91st.c deleted file mode 100644 index a744222..0000000 --- a/sys/arm/at91/at91st.c +++ /dev/null @@ -1,215 +0,0 @@ -/*- - * Copyright (c) 2005 Olivier Houchard. 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 ``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 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/kernel.h> -#include <sys/module.h> -#include <sys/time.h> -#include <sys/bus.h> -#include <sys/resource.h> -#include <sys/rman.h> -#include <sys/timetc.h> - -#include <machine/bus.h> -#include <machine/cpu.h> -#include <machine/cpufunc.h> -#include <machine/resource.h> -#include <machine/frame.h> -#include <machine/intr.h> -#include <arm/at91/at91rm92reg.h> -#include <arm/at91/at91streg.h> -#include <arm/at91/at91var.h> - -static struct at91st_softc { - bus_space_tag_t sc_st; - bus_space_handle_t sc_sh; - device_t dev; -} *timer_softc; - -#define RD4(off) \ - bus_space_read_4(timer_softc->sc_st, timer_softc->sc_sh, (off)) -#define WR4(off, val) \ - bus_space_write_4(timer_softc->sc_st, timer_softc->sc_sh, (off), (val)) - -static inline int -st_crtr(void) -{ - int cur1, cur2; - do { - cur1 = RD4(ST_CRTR); - cur2 = RD4(ST_CRTR); - } while (cur1 != cur2); - return (cur1); -} - -static unsigned at91st_get_timecount(struct timecounter *tc); - -static struct timecounter at91st_timecounter = { - at91st_get_timecount, /* get_timecount */ - NULL, /* no poll_pps */ - 0xfffffu, /* counter_mask */ - 32768, /* frequency */ - "AT91RM9200 timer", /* name */ - 0 /* quality */ -}; - -static int -at91st_probe(device_t dev) -{ - - device_set_desc(dev, "ST"); - return (0); -} - -static int -at91st_attach(device_t dev) -{ - struct at91_softc *sc = device_get_softc(device_get_parent(dev)); - - timer_softc = device_get_softc(dev); - timer_softc->sc_st = sc->sc_st; - timer_softc->dev = dev; - if (bus_space_subregion(sc->sc_st, sc->sc_sh, AT91RM92_ST_BASE, - AT91RM92_ST_SIZE, &timer_softc->sc_sh) != 0) - panic("couldn't subregion timer registers"); - /* - * Real time counter increments every clock cycle, need to set before - * initializing clocks so that DELAY works. - */ - WR4(ST_RTMR, 1); - - return (0); -} - -static device_method_t at91st_methods[] = { - DEVMETHOD(device_probe, at91st_probe), - DEVMETHOD(device_attach, at91st_attach), - {0, 0}, -}; - -static driver_t at91st_driver = { - "at91_st", - at91st_methods, - sizeof(struct at91st_softc), -}; -static devclass_t at91st_devclass; - -DRIVER_MODULE(at91_st, atmelarm, at91st_driver, at91st_devclass, 0, 0); - -static unsigned -at91st_get_timecount(struct timecounter *tc) -{ - return (st_crtr()); -} - -static void -clock_intr(void *arg) -{ - struct trapframe *fp = arg; - - /* The interrupt is shared, so we have to make sure it's for us. */ - if (RD4(ST_SR) & ST_SR_PITS) - hardclock(TRAPF_USERMODE(fp), TRAPF_PC(fp)); -} - -void -cpu_initclocks(void) -{ - int rel_value; - struct resource *irq; - int rid = 0; - void *ih; - device_t dev = timer_softc->dev; - - if (32768 % hz) { - printf("Cannot get %d Hz clock; using 128Hz\n", hz); - hz = 128; - } - rel_value = 32768 / hz; - /* Disable all interrupts. */ - WR4(ST_IDR, 0xffffffff); - /* The system timer shares the system irq (1) */ - irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 1, 1, 1, - RF_ACTIVE | RF_SHAREABLE); - if (!irq) - panic("Unable to allocate irq for the system timer"); - else - bus_setup_intr(dev, irq, INTR_TYPE_CLK | INTR_FAST, - clock_intr, NULL, &ih); - - WR4(ST_PIMR, rel_value); - - /* Enable PITS interrupts. */ - WR4(ST_IER, ST_SR_PITS); - tc_init(&at91st_timecounter); -} - -void -DELAY(int n) -{ - uint32_t start, end, cur; - - start = st_crtr(); - n = (n * 1000000) / 32768; - if (n <= 0) - n = 1; - end = (start + n) & ST_CRTR_MASK; - cur = start; - if (start > end) { - while (cur >= start || cur < end) - cur = st_crtr(); - } else { - while (cur < end) - cur = st_crtr(); - } -} - -void -cpu_reset(void) -{ - /* - * Reset the CPU by programmig the watchdog timer to reset the - * CPU after 128 'slow' clocks, or about ~4ms. Loop until - * the reset happens for safety. - */ - WR4(ST_WDMR, ST_WDMR_RSTEN | 2); - WR4(ST_CR, ST_CR_WDRST); - while (1) - continue; -} - -void -cpu_startprofclock(void) -{ -} - -void -cpu_stopprofclock(void) -{ -} - |