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freebsd-dev/sys/arm/allwinner/a10_timer.c

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Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
/*-
Switch to my freebsd.org emal address in copyright. Approved by: stas (mentor)
2014-03-25 08:31:47 +00:00
* Copyright (c) 2012 Ganbold Tsagaankhuu <ganbold@freebsd.org>
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
Fix license to follow standard license template Reviewed by: joel
2013-01-15 09:31:13 +00:00
* 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.
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
*
* 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
Fix formatting of license according to share/examples/etc/bsd-style-copyright Reviewed by: joel
2013-01-15 09:39:11 +00:00
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
* 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/kernel.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/rman.h>
#include <sys/timeet.h>
#include <sys/timetc.h>
#include <sys/watchdog.h>
#include <machine/bus.h>
#include <machine/intr.h>
Add a MULTIDELAY option to allow the ARM kernel to have multiple DELAY implementations. Early in the boot the kernel will use an approximate, however after the timer has been probed it will switch to a more accurate implementation. Reviewed by: manu Sponsored by: ABT Systems Ltd Differential Revision: https://reviews.freebsd.org/D5762
2016-04-30 17:27:33 +00:00
#include <machine/machdep.h>
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
#include <dev/extres/clk/clk.h>
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
#if defined(__aarch64__)
#include "opt_soc.h"
#else
Rename allwinner_machdep.{c.h} to aw_machdep.{c.h} as all allwinner source files are name aw_*
2016-08-17 21:44:02 +00:00
#include <arm/allwinner/aw_machdep.h>
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
#endif
Bring initial support for Allwinner A20 SoC (Cubieboard2). Add support for A20 timer. Correct interrupt offset depending from chip. Add basic code for CPU configuration module. For now, add kernel config and dts file (only FDT blob related problem needs to be solved later in order to have one kernel for both cubieboard1 and 2). Approved by: ray@
2013-08-07 11:07:56 +00:00
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
/**
* Timer registers addr
*
*/
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
#define TIMER_IRQ_EN_REG 0x00
#define TIMER_IRQ_ENABLE(x) (1 << x)
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
#define TIMER_IRQ_STA_REG 0x04
#define TIMER_IRQ_PENDING(x) (1 << x)
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
/*
* On A10, A13, A20 and A31/A31s 6 timers are available
*/
#define TIMER_CTRL_REG(x) (0x10 + 0x10 * x)
#define TIMER_CTRL_START (1 << 0)
#define TIMER_CTRL_AUTORELOAD (1 << 1)
#define TIMER_CTRL_CLKSRC_MASK (3 << 2)
#define TIMER_CTRL_OSC24M (1 << 2)
#define TIMER_CTRL_PRESCALAR_MASK (0x7 << 4)
#define TIMER_CTRL_PRESCALAR(x) ((x - 1) << 4)
#define TIMER_CTRL_MODE_MASK (1 << 7)
#define TIMER_CTRL_MODE_SINGLE (1 << 7)
#define TIMER_CTRL_MODE_CONTINUOUS (0 << 7)
#define TIMER_INTV_REG(x) (0x14 + 0x10 * x)
#define TIMER_CURV_REG(x) (0x18 + 0x10 * x)
/* 64 bit counter, available in A10 and A13 */
#define CNT64_CTRL_REG 0xa0
#define CNT64_CTRL_RL_EN 0x02 /* read latch enable */
#define CNT64_LO_REG 0xa4
#define CNT64_HI_REG 0xa8
#define SYS_TIMER_CLKSRC 24000000 /* clock source */
enum a10_timer_type {
A10_TIMER = 1,
A23_TIMER,
};
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
struct a10_timer_softc {
device_t sc_dev;
struct resource *res[2];
void *sc_ih; /* interrupt handler */
uint32_t sc_period;
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
uint64_t timer0_freq;
struct eventtimer et;
enum a10_timer_type type;
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
};
#define timer_read_4(sc, reg) \
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
bus_read_4(sc->res[A10_TIMER_MEMRES], reg)
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
#define timer_write_4(sc, reg, val) \
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
bus_write_4(sc->res[A10_TIMER_MEMRES], reg, val)
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
static u_int a10_timer_get_timecount(struct timecounter *);
static int a10_timer_timer_start(struct eventtimer *,
MFcalloutng: Switch eventtimers(9) from using struct bintime to sbintime_t. Even before this not a single driver really supported full dynamic range of struct bintime even in theory, not speaking about practical inexpediency. This change legitimates the status quo and cleans up the code.
2013-02-28 13:46:03 +00:00
sbintime_t first, sbintime_t period);
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
static int a10_timer_timer_stop(struct eventtimer *);
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
static uint64_t timer_read_counter64(struct a10_timer_softc *sc);
static void a10_timer_eventtimer_setup(struct a10_timer_softc *sc);
static void a23_timer_timecounter_setup(struct a10_timer_softc *sc);
static u_int a23_timer_get_timecount(struct timecounter *tc);
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
static int a10_timer_irq(void *);
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
static int a10_timer_probe(device_t);
static int a10_timer_attach(device_t);
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
#if defined(__arm__)
Add a MULTIDELAY option to allow the ARM kernel to have multiple DELAY implementations. Early in the boot the kernel will use an approximate, however after the timer has been probed it will switch to a more accurate implementation. Reviewed by: manu Sponsored by: ABT Systems Ltd Differential Revision: https://reviews.freebsd.org/D5762
2016-04-30 17:27:33 +00:00
static delay_func a10_timer_delay;
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
#endif
Add a MULTIDELAY option to allow the ARM kernel to have multiple DELAY implementations. Early in the boot the kernel will use an approximate, however after the timer has been probed it will switch to a more accurate implementation. Reviewed by: manu Sponsored by: ABT Systems Ltd Differential Revision: https://reviews.freebsd.org/D5762
2016-04-30 17:27:33 +00:00
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
static struct timecounter a10_timer_timecounter = {
.tc_name = "a10_timer timer0",
.tc_get_timecount = a10_timer_get_timecount,
.tc_counter_mask = ~0u,
.tc_frequency = 0,
.tc_quality = 1000,
};
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
static struct timecounter a23_timer_timecounter = {
.tc_name = "a10_timer timer0",
.tc_get_timecount = a23_timer_get_timecount,
.tc_counter_mask = ~0u,
.tc_frequency = 0,
/* We want it to be selected over the arm generic timecounter */
.tc_quality = 2000,
};
#define A10_TIMER_MEMRES 0
#define A10_TIMER_IRQRES 1
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
static struct resource_spec a10_timer_spec[] = {
{ SYS_RES_MEMORY, 0, RF_ACTIVE },
{ SYS_RES_IRQ, 0, RF_ACTIVE },
{ -1, 0 }
};
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
static struct ofw_compat_data compat_data[] = {
{"allwinner,sun4i-a10-timer", A10_TIMER},
{"allwinner,sun8i-a23-timer", A23_TIMER},
{NULL, 0},
};
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
static int
a10_timer_probe(device_t dev)
{
Bring initial support for Allwinner A20 SoC (Cubieboard2). Add support for A20 timer. Correct interrupt offset depending from chip. Add basic code for CPU configuration module. For now, add kernel config and dts file (only FDT blob related problem needs to be solved later in order to have one kernel for both cubieboard1 and 2). Approved by: ray@
2013-08-07 11:07:56 +00:00
struct a10_timer_softc *sc;
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
#if defined(__arm__)
Update of the Allwinner drivers to: * Use the Linux compat string * Use EARLY_DRIVER_MODULE to attach at the right time * Add a generic A10 kernel config file * A20 now use generic_timer * Add two new dts files for Olimex boards * Update our custom DTS file for A10 and A20 to use the same compatible property names as the vendor ones. Submitted by: Emmanuel Vadot <manu@bidouilliste.com> Differential Revision: https://reviews.freebsd.org/D4792
2016-02-10 09:19:29 +00:00
u_int soc_family;
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
#endif
Bring initial support for Allwinner A20 SoC (Cubieboard2). Add support for A20 timer. Correct interrupt offset depending from chip. Add basic code for CPU configuration module. For now, add kernel config and dts file (only FDT blob related problem needs to be solved later in order to have one kernel for both cubieboard1 and 2). Approved by: ray@
2013-08-07 11:07:56 +00:00
sc = device_get_softc(dev);
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
Update of the Allwinner drivers to: * Use the Linux compat string * Use EARLY_DRIVER_MODULE to attach at the right time * Add a generic A10 kernel config file * A20 now use generic_timer * Add two new dts files for Olimex boards * Update our custom DTS file for A10 and A20 to use the same compatible property names as the vendor ones. Submitted by: Emmanuel Vadot <manu@bidouilliste.com> Differential Revision: https://reviews.freebsd.org/D4792
2016-02-10 09:19:29 +00:00
return (ENXIO);
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
#if defined(__arm__)
/* For SoC >= A10 we have the ARM Timecounter/Eventtimer */
Update of the Allwinner drivers to: * Use the Linux compat string * Use EARLY_DRIVER_MODULE to attach at the right time * Add a generic A10 kernel config file * A20 now use generic_timer * Add two new dts files for Olimex boards * Update our custom DTS file for A10 and A20 to use the same compatible property names as the vendor ones. Submitted by: Emmanuel Vadot <manu@bidouilliste.com> Differential Revision: https://reviews.freebsd.org/D4792
2016-02-10 09:19:29 +00:00
soc_family = allwinner_soc_family();
if (soc_family != ALLWINNERSOC_SUN4I &&
soc_family != ALLWINNERSOC_SUN5I)
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
return (ENXIO);
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
#endif
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
device_set_desc(dev, "Allwinner timer");
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
return (BUS_PROBE_DEFAULT);
}
static int
a10_timer_attach(device_t dev)
{
struct a10_timer_softc *sc;
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
clk_t clk;
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
int err;
sc = device_get_softc(dev);
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
sc->type = ofw_bus_search_compatible(dev, compat_data)->ocd_data;
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
if (bus_alloc_resources(dev, a10_timer_spec, sc->res)) {
device_printf(dev, "could not allocate resources\n");
return (ENXIO);
}
sc->sc_dev = dev;
/* Setup and enable the timer interrupt */
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
err = bus_setup_intr(dev, sc->res[A10_TIMER_IRQRES], INTR_TYPE_CLK,
a10_timer_irq, NULL, sc, &sc->sc_ih);
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
if (err != 0) {
bus_release_resources(dev, a10_timer_spec, sc->res);
device_printf(dev, "Unable to setup the clock irq handler, "
"err = %d\n", err);
return (ENXIO);
}
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
if (clk_get_by_ofw_index(dev, 0, 0, &clk) != 0)
sc->timer0_freq = SYS_TIMER_CLKSRC;
else {
if (clk_get_freq(clk, &sc->timer0_freq) != 0) {
device_printf(dev, "Cannot get clock source frequency\n");
return (ENXIO);
}
}
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
#if defined(__arm__)
a10_timer_eventtimer_setup(sc);
arm_set_delay(a10_timer_delay, sc);
a10_timer_timecounter.tc_priv = sc;
a10_timer_timecounter.tc_frequency = sc->timer0_freq;
tc_init(&a10_timer_timecounter);
#elif defined(__aarch64__)
a23_timer_timecounter_setup(sc);
#endif
if (bootverbose) {
device_printf(sc->sc_dev, "clock: hz=%d stathz = %d\n", hz, stathz);
device_printf(sc->sc_dev, "event timer clock frequency %ju\n",
sc->timer0_freq);
device_printf(sc->sc_dev, "timecounter clock frequency %jd\n",
a10_timer_timecounter.tc_frequency);
}
return (0);
}
static int
a10_timer_irq(void *arg)
{
struct a10_timer_softc *sc;
uint32_t val;
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
sc = (struct a10_timer_softc *)arg;
/* Clear interrupt pending bit. */
timer_write_4(sc, TIMER_IRQ_STA_REG, TIMER_IRQ_PENDING(0));
val = timer_read_4(sc, TIMER_CTRL_REG(0));
/*
* Disabled autoreload and sc_period > 0 means
* timer_start was called with non NULL first value.
* Now we will set periodic timer with the given period
* value.
*/
if ((val & (1<<1)) == 0 && sc->sc_period > 0) {
/* Update timer */
timer_write_4(sc, TIMER_CURV_REG(0), sc->sc_period);
/* Make periodic and enable */
val |= TIMER_CTRL_AUTORELOAD | TIMER_CTRL_START;
timer_write_4(sc, TIMER_CTRL_REG(0), val);
}
if (sc->et.et_active)
sc->et.et_event_cb(&sc->et, sc->et.et_arg);
return (FILTER_HANDLED);
}
/*
* Event timer function for A10 and A13
*/
static void
a10_timer_eventtimer_setup(struct a10_timer_softc *sc)
{
uint32_t val;
/* Set clock source to OSC24M, 1 pre-division, continuous mode */
val = timer_read_4(sc, TIMER_CTRL_REG(0));
val &= ~TIMER_CTRL_PRESCALAR_MASK | ~TIMER_CTRL_MODE_MASK | ~TIMER_CTRL_CLKSRC_MASK;
val |= TIMER_CTRL_PRESCALAR(1) | TIMER_CTRL_OSC24M;
timer_write_4(sc, TIMER_CTRL_REG(0), val);
/* Enable timer0 */
val = timer_read_4(sc, TIMER_IRQ_EN_REG);
val |= TIMER_IRQ_ENABLE(0);
timer_write_4(sc, TIMER_IRQ_EN_REG, val);
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
/* Set desired frequency in event timer and timecounter */
sc->et.et_frequency = sc->timer0_freq;
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
sc->et.et_name = "a10_timer Eventtimer";
sc->et.et_flags = ET_FLAGS_ONESHOT | ET_FLAGS_PERIODIC;
sc->et.et_quality = 1000;
MFcalloutng: Switch eventtimers(9) from using struct bintime to sbintime_t. Even before this not a single driver really supported full dynamic range of struct bintime even in theory, not speaking about practical inexpediency. This change legitimates the status quo and cleans up the code.
2013-02-28 13:46:03 +00:00
sc->et.et_min_period = (0x00000005LLU << 32) / sc->et.et_frequency;
sc->et.et_max_period = (0xfffffffeLLU << 32) / sc->et.et_frequency;
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
sc->et.et_start = a10_timer_timer_start;
sc->et.et_stop = a10_timer_timer_stop;
sc->et.et_priv = sc;
et_register(&sc->et);
}
static int
MFcalloutng: Switch eventtimers(9) from using struct bintime to sbintime_t. Even before this not a single driver really supported full dynamic range of struct bintime even in theory, not speaking about practical inexpediency. This change legitimates the status quo and cleans up the code.
2013-02-28 13:46:03 +00:00
a10_timer_timer_start(struct eventtimer *et, sbintime_t first,
sbintime_t period)
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
{
struct a10_timer_softc *sc;
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
uint32_t count;
uint32_t val;
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
sc = (struct a10_timer_softc *)et->et_priv;
MFcalloutng: Switch eventtimers(9) from using struct bintime to sbintime_t. Even before this not a single driver really supported full dynamic range of struct bintime even in theory, not speaking about practical inexpediency. This change legitimates the status quo and cleans up the code.
2013-02-28 13:46:03 +00:00
if (period != 0)
sc->sc_period = ((uint32_t)et->et_frequency * period) >> 32;
else
sc->sc_period = 0;
if (first != 0)
count = ((uint32_t)et->et_frequency * first) >> 32;
else
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
count = sc->sc_period;
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
/* Update timer values */
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
timer_write_4(sc, TIMER_INTV_REG(0), sc->sc_period);
timer_write_4(sc, TIMER_CURV_REG(0), count);
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
val = timer_read_4(sc, TIMER_CTRL_REG(0));
MFcalloutng: Switch eventtimers(9) from using struct bintime to sbintime_t. Even before this not a single driver really supported full dynamic range of struct bintime even in theory, not speaking about practical inexpediency. This change legitimates the status quo and cleans up the code.
2013-02-28 13:46:03 +00:00
if (period != 0) {
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
/* periodic */
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
val |= TIMER_CTRL_AUTORELOAD;
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
} else {
/* oneshot */
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
val &= ~TIMER_CTRL_AUTORELOAD;
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
}
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
/* Enable timer0 */
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
val |= TIMER_IRQ_ENABLE(0);
timer_write_4(sc, TIMER_CTRL_REG(0), val);
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
return (0);
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
}
static int
a10_timer_timer_stop(struct eventtimer *et)
{
struct a10_timer_softc *sc;
uint32_t val;
sc = (struct a10_timer_softc *)et->et_priv;
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
/* Disable timer0 */
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
val = timer_read_4(sc, TIMER_CTRL_REG(0));
val &= ~TIMER_CTRL_START;
timer_write_4(sc, TIMER_CTRL_REG(0), val);
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
sc->sc_period = 0;
return (0);
}
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
/*
* Timecounter functions for A23 and above
*/
static void
a23_timer_timecounter_setup(struct a10_timer_softc *sc)
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
{
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
uint32_t val;
/* Set clock source to OSC24M, 1 pre-division, continuous mode */
val = timer_read_4(sc, TIMER_CTRL_REG(0));
val &= ~TIMER_CTRL_PRESCALAR_MASK | ~TIMER_CTRL_MODE_MASK | ~TIMER_CTRL_CLKSRC_MASK;
val |= TIMER_CTRL_PRESCALAR(1) | TIMER_CTRL_OSC24M;
timer_write_4(sc, TIMER_CTRL_REG(0), val);
/* Set reload value */
timer_write_4(sc, TIMER_INTV_REG(0), ~0);
val = timer_read_4(sc, TIMER_INTV_REG(0));
/* Enable timer0 */
val = timer_read_4(sc, TIMER_CTRL_REG(0));
val |= TIMER_CTRL_AUTORELOAD | TIMER_CTRL_START;
timer_write_4(sc, TIMER_CTRL_REG(0), val);
val = timer_read_4(sc, TIMER_CURV_REG(0));
a23_timer_timecounter.tc_priv = sc;
a23_timer_timecounter.tc_frequency = sc->timer0_freq;
tc_init(&a23_timer_timecounter);
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
}
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
static u_int
a23_timer_get_timecount(struct timecounter *tc)
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
{
struct a10_timer_softc *sc;
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
uint32_t val;
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
sc = (struct a10_timer_softc *)tc->tc_priv;
if (sc == NULL)
return (0);
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
val = timer_read_4(sc, TIMER_CURV_REG(0));
/* Counter count backwards */
return (~0u - val);
}
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
/*
* Timecounter functions for A10 and A13, using the 64 bits counter
*/
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
static uint64_t
timer_read_counter64(struct a10_timer_softc *sc)
{
uint32_t lo, hi;
Fix timer to support oneshot and periodic mode Use 64 bit high and low counter for timecounter and delay Reviewed by: mav@, ian@ Approved by: gonzo@
2013-01-24 09:36:50 +00:00
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
/* Latch counter, wait for it to be ready to read. */
timer_write_4(sc, CNT64_CTRL_REG, CNT64_CTRL_RL_EN);
while (timer_read_4(sc, CNT64_CTRL_REG) & CNT64_CTRL_RL_EN)
continue;
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
hi = timer_read_4(sc, CNT64_HI_REG);
lo = timer_read_4(sc, CNT64_LO_REG);
return (((uint64_t)hi << 32) | lo);
}
#if defined(__arm__)
static void
a10_timer_delay(int usec, void *arg)
{
struct a10_timer_softc *sc = arg;
uint64_t end, now;
now = timer_read_counter64(sc);
end = now + (sc->timer0_freq / 1000000) * (usec + 1);
while (now < end)
now = timer_read_counter64(sc);
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
}
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
#endif
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
static u_int
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
a10_timer_get_timecount(struct timecounter *tc)
{
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
if (tc->tc_priv == NULL)
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
return (0);
a10_timer: Update the driver so we can use it on other SoC a10_timer is currently use in UP allwinner SoC (A10 and A13). Those don't have the generic arm timer. The arm generic timecounter is broken in the A64 SoC, some attempts have been made to fix the glitch but users still reported some minor ones. Since the A64 (and all Allwinner SoC) still have this timer controller, rework the driver so we can use it in any SoC. Since it doesn't have the 64 bits counter on all SoC, use one of the generic 32 bits counter as the timecounter source. PR: 229644
2018-08-23 18:46:05 +00:00
return ((u_int)timer_read_counter64(tc->tc_priv));
Initial support for Allwinner A10 SoC (Cubieboard) Add simple console driver Add interrupt handling and timer codes Add kernel config file Add dts file Approved by: gonzo
2013-01-15 08:26:16 +00:00
}
static device_method_t a10_timer_methods[] = {
DEVMETHOD(device_probe, a10_timer_probe),
DEVMETHOD(device_attach, a10_timer_attach),
DEVMETHOD_END
};
static driver_t a10_timer_driver = {
"a10_timer",
a10_timer_methods,
sizeof(struct a10_timer_softc),
};
static devclass_t a10_timer_devclass;
Update of the Allwinner drivers to: * Use the Linux compat string * Use EARLY_DRIVER_MODULE to attach at the right time * Add a generic A10 kernel config file * A20 now use generic_timer * Add two new dts files for Olimex boards * Update our custom DTS file for A10 and A20 to use the same compatible property names as the vendor ones. Submitted by: Emmanuel Vadot <manu@bidouilliste.com> Differential Revision: https://reviews.freebsd.org/D4792
2016-02-10 09:19:29 +00:00
EARLY_DRIVER_MODULE(a10_timer, simplebus, a10_timer_driver, a10_timer_devclass, 0, 0,
BUS_PASS_TIMER + BUS_PASS_ORDER_MIDDLE);
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