226fb5aaff
Current ARM MPTimer implementation uses QEMUTimer for the actual timer, this implementation isn't complete and mostly tries to duplicate of what generic ptimer is already doing fine. Conversion to ptimer brings the following benefits and fixes: - Simple timer pausing implementation - Fixes counter value preservation after stopping the timer - Properly handles prescaler != 0 / counter = 0 / load = 0 cases - Code simplification and reduction Bump VMSD to version 3, since VMState is changed and is not compatible with the previous implementation. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Message-id: 37f378c33bb5a28d5cd71167a6bd5bff5e59cbc3.1475421224.git.digetx@gmail.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/*
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* Private peripheral timer/watchdog blocks for ARM 11MPCore and A9MP
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*
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* Copyright (c) 2006-2007 CodeSourcery.
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* Copyright (c) 2011 Linaro Limited
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* Written by Paul Brook, Peter Maydell
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef HW_TIMER_ARM_MPTIMER_H
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#define HW_TIMER_ARM_MPTIMER_H
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#include "hw/sysbus.h"
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#define ARM_MPTIMER_MAX_CPUS 4
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/* State of a single timer or watchdog block */
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typedef struct {
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uint32_t control;
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uint32_t status;
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struct ptimer_state *timer;
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qemu_irq irq;
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MemoryRegion iomem;
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} TimerBlock;
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#define TYPE_ARM_MPTIMER "arm_mptimer"
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#define ARM_MPTIMER(obj) \
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OBJECT_CHECK(ARMMPTimerState, (obj), TYPE_ARM_MPTIMER)
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typedef struct {
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/*< private >*/
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SysBusDevice parent_obj;
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/*< public >*/
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uint32_t num_cpu;
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TimerBlock timerblock[ARM_MPTIMER_MAX_CPUS];
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MemoryRegion iomem;
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} ARMMPTimerState;
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#endif
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