Differential D26976 Diff 79613 sys/arm/arm/generic_timer.c

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sys/arm/arm/generic_timer.c

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#include <machine/cpu.h>		#include <machine/cpu.h>
#include <machine/intr.h>		#include <machine/intr.h>
#include <machine/md_var.h>		#include <machine/md_var.h>

#if defined(__arm__)		#if defined(__arm__)
#include <machine/machdep.h> /* For arm_set_delay */		#include <machine/machdep.h> /* For arm_set_delay */
#endif		#endif

		#if defined(__aarch64__)
		#include <machine/vmm.h> /* For virt_enabled() */
		#endif

#ifdef FDT		#ifdef FDT
#include <dev/ofw/openfirm.h>		#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h>		#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>		#include <dev/ofw/ofw_bus_subr.h>
#endif		#endif

#ifdef DEV_ACPI		#ifdef DEV_ACPI
#include <contrib/dev/acpica/include/acpi.h>		#include <contrib/dev/acpica/include/acpi.h>
#include <dev/acpica/acpivar.h>		#include <dev/acpica/acpivar.h>
#endif		#endif

		#include "generic_timer.h"

#define GT_CTRL_ENABLE (1 << 0)		#define GT_CTRL_ENABLE (1 << 0)
#define GT_CTRL_INT_MASK (1 << 1)		#define GT_CTRL_INT_MASK (1 << 1)
#define GT_CTRL_INT_STAT (1 << 2)		#define GT_CTRL_INT_STAT (1 << 2)
#define GT_REG_CTRL 0		#define GT_REG_CTRL 0
#define GT_REG_TVAL 1		#define GT_REG_TVAL 1

#define GT_CNTKCTL_PL0PTEN (1 << 9) /* PL0 Physical timer reg access */		#define GT_CNTKCTL_PL0PTEN (1 << 9) /* PL0 Physical timer reg access */
#define GT_CNTKCTL_PL0VTEN (1 << 8) /* PL0 Virtual timer reg access */		#define GT_CNTKCTL_PL0VTEN (1 << 8) /* PL0 Virtual timer reg access */
Show All 33 Lines	static struct timecounter arm_tmr_timecount = {
.tc_get_timecount = arm_tmr_get_timecount,		.tc_get_timecount = arm_tmr_get_timecount,
.tc_poll_pps = NULL,		.tc_poll_pps = NULL,
.tc_counter_mask = ~0u,		.tc_counter_mask = ~0u,
.tc_frequency = 0,		.tc_frequency = 0,
.tc_quality = 1000,		.tc_quality = 1000,
.tc_fill_vdso_timehands = arm_tmr_fill_vdso_timehands,		.tc_fill_vdso_timehands = arm_tmr_fill_vdso_timehands,
};		};

		static device_t arm_tmr_dev;

#ifdef __arm__		#ifdef __arm__
#define get_el0(x) cp15_## x ##_get()		#define get_el0(x) cp15_## x ##_get()
#define get_el1(x) cp15_## x ##_get()		#define get_el1(x) cp15_## x ##_get()
#define set_el0(x, val) cp15_## x ##_set(val)		#define set_el0(x, val) cp15_## x ##_set(val)
#define set_el1(x, val) cp15_## x ##_set(val)		#define set_el1(x, val) cp15_## x ##_set(val)
#else /* __aarch64__ */		#else /* __aarch64__ */
#define get_el0(x) READ_SPECIALREG(x ##_el0)		#define get_el0(x) READ_SPECIALREG(x ##_el0)
#define get_el1(x) READ_SPECIALREG(x ##_el1)		#define get_el1(x) READ_SPECIALREG(x ##_el1)
▲ Show 20 Lines • Show All 175 Lines • ▼ Show 20 Lines	arm_tmr_intr(void *arg)
}		}

if (sc->et.et_active)		if (sc->et.et_active)
sc->et.et_event_cb(&sc->et, sc->et.et_arg);		sc->et.et_event_cb(&sc->et, sc->et.et_arg);

return (FILTER_HANDLED);		return (FILTER_HANDLED);
}		}

		int
		arm_tmr_setup_intr(int gt_type, driver_filter_t filter, driver_intr_t handler,
		void *arg)
		{
		if (gt_type != GT_PHYS_SECURE &&
		gt_type != GT_PHYS_NONSECURE &&
		gt_type != GT_VIRT &&
		gt_type != GT_HYP)
		return (ENXIO);

		if (arm_tmr_sc->res[gt_type] == NULL)
		return (ENXIO);

		return (bus_setup_intr(arm_tmr_dev, arm_tmr_sc->res[gt_type],
		INTR_TYPE_CLK, filter, handler, arg, &arm_tmr_sc->ihl[gt_type]));
		}

		int
		arm_tmr_teardown_intr(int gt_type)
		{
		if (gt_type != GT_PHYS_SECURE &&
		gt_type != GT_PHYS_NONSECURE &&
		gt_type != GT_VIRT &&
		gt_type != GT_HYP)
		return (ENXIO);

		if (arm_tmr_sc->res[gt_type] == NULL)
		return (ENXIO);

		return (bus_teardown_intr(arm_tmr_dev, arm_tmr_sc->res[gt_type],
		arm_tmr_sc->ihl[gt_type]));
		}

#ifdef FDT		#ifdef FDT
static int		static int
arm_tmr_fdt_probe(device_t dev)		arm_tmr_fdt_probe(device_t dev)
{		{

if (!ofw_bus_status_okay(dev))		if (!ofw_bus_status_okay(dev))
return (ENXIO);		return (ENXIO);

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#endif		#endif
/* Otherwise set up the secure and non-secure physical timers. */		/* Otherwise set up the secure and non-secure physical timers. */
{		{
sc->physical = true;		sc->physical = true;
first_timer = 0;		first_timer = 0;
last_timer = 1;		last_timer = 1;
}		}

		#ifdef __aarch64__
		sc->physical \|= virt_enabled();
		#endif

arm_tmr_sc = sc;		arm_tmr_sc = sc;

/* Setup secure, non-secure and virtual IRQs handler */		/* Setup secure, non-secure and virtual IRQs handler */
for (i = first_timer; i <= last_timer; i++) {		for (i = GT_PHYS_SECURE; i <= GT_VIRT; i++) {
/* If we do not have the interrupt, skip it. */		/* If we do not have the interrupt, skip it. */
if (sc->res[i] == NULL)		if (sc->res[i] == NULL)
continue;		continue;
		#if defined(__aarch64__)
		if (i == 2 && virt_enabled()) {
		/*
		* Do not install an interrupt handler for the virtual
		* timer. This will be used by the VM.
		*/
		continue;
		}
		#endif
error = bus_setup_intr(dev, sc->res[i], INTR_TYPE_CLK,		error = bus_setup_intr(dev, sc->res[i], INTR_TYPE_CLK,
arm_tmr_intr, NULL, sc, &sc->ihl[i]);		arm_tmr_intr, NULL, sc, &sc->ihl[i]);
if (error) {		if (error) {
device_printf(dev, "Unable to alloc int resource.\n");		device_printf(dev, "Unable to alloc int resource.\n");
return (ENXIO);		return (ENXIO);
}		}
}		}

/* Disable the virtual timer until we are ready */		/* Disable the virtual timer until we are ready */
if (sc->res[2] != NULL)		if (sc->res[2] != NULL)
arm_tmr_disable(false);		arm_tmr_disable(false);
/* And the physical */		/* And the physical */
if (sc->physical)		if (sc->physical)
arm_tmr_disable(true);		arm_tmr_disable(true);

arm_tmr_timecount.tc_frequency = sc->clkfreq;		arm_tmr_timecount.tc_frequency = sc->clkfreq;
Show All 9 Lines	#endif
sc->et.et_start = arm_tmr_start;		sc->et.et_start = arm_tmr_start;
sc->et.et_stop = arm_tmr_stop;		sc->et.et_stop = arm_tmr_stop;
sc->et.et_priv = sc;		sc->et.et_priv = sc;
et_register(&sc->et);		et_register(&sc->et);

#if defined(__arm__)		#if defined(__arm__)
arm_set_delay(arm_tmr_do_delay, sc);		arm_set_delay(arm_tmr_do_delay, sc);
#endif		#endif

		arm_tmr_dev = dev;

return (0);		return (0);
}		}

#ifdef FDT		#ifdef FDT
static device_method_t arm_tmr_fdt_methods[] = {		static device_method_t arm_tmr_fdt_methods[] = {
DEVMETHOD(device_probe, arm_tmr_fdt_probe),		DEVMETHOD(device_probe, arm_tmr_fdt_probe),
DEVMETHOD(device_attach, arm_tmr_attach),		DEVMETHOD(device_attach, arm_tmr_attach),
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