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hw/timer: Add value matching support to aspeed_timer

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Value matching allows Linux to boot with CONFIG_NO_HZ_IDLE=y on the
palmetto-bmc machine. Two match registers are provided for each timer.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Message-id: 1465974248-20434-1-git-send-email-andrew@aj.id.au
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Andrew Jeffery 2016-06-17 15:23:48 +01:00 • committed by Peter Maydell
parent 3b1a222501
commit 1d3e65aa7a
2 changed files with 104 additions and 39 deletions
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5
include/hw/timer/aspeed_timer.h
View file

@ -22,7 +22,7 @@
#ifndef ASPEED_TIMER_H
#define ASPEED_TIMER_H
#include "hw/ptimer.h"
#include "qemu/timer.h"
#define ASPEED_TIMER(obj) \
OBJECT_CHECK(AspeedTimerCtrlState, (obj), TYPE_ASPEED_TIMER);
@ -33,15 +33,16 @@ typedef struct AspeedTimer {
qemu_irq irq;
uint8_t id;
QEMUTimer timer;
/**
* Track the line level as the ASPEED timers implement edge triggered
* interrupts, signalling with both the rising and falling edge.
*/
int32_t level;
ptimer_state *timer;
uint32_t reload;
uint32_t match[2];
uint64_t start;
} AspeedTimer;
typedef struct AspeedTimerCtrlState {