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This device exposes three parameters: - frequency (uint32) : The system frequency - irq-line (uint32) : IRQ line number for the first timer (others use irq-line + 1, irq-line + 2...) - nr-timers (uint32) : Number of timers Emulation of GrLib devices is base on the GRLIB IP Core User's Manual: http://www.gaisler.com/products/grlib/grip.pdf Signed-off-by: Fabien Chouteau <[email protected]> Signed-off-by: Blue Swirl <[email protected]>
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/* | ||
* QEMU GRLIB Components | ||
* | ||
* Copyright (c) 2010-2011 AdaCore | ||
* | ||
* Permission is hereby granted, free of charge, to any person obtaining a copy | ||
* of this software and associated documentation files (the "Software"), to deal | ||
* in the Software without restriction, including without limitation the rights | ||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
* copies of the Software, and to permit persons to whom the Software is | ||
* furnished to do so, subject to the following conditions: | ||
* | ||
* The above copyright notice and this permission notice shall be included in | ||
* all copies or substantial portions of the Software. | ||
* | ||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | ||
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
* THE SOFTWARE. | ||
*/ | ||
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#ifndef _GRLIB_H_ | ||
#define _GRLIB_H_ | ||
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#include "qdev.h" | ||
#include "sysbus.h" | ||
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/* Emulation of GrLib device is base on the GRLIB IP Core User's Manual: | ||
* http://www.gaisler.com/products/grlib/grip.pdf | ||
*/ | ||
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/* GPTimer */ | ||
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static inline | ||
DeviceState *grlib_gptimer_create(target_phys_addr_t base, | ||
uint32_t nr_timers, | ||
uint32_t freq, | ||
qemu_irq *cpu_irqs, | ||
int base_irq) | ||
{ | ||
DeviceState *dev; | ||
int i; | ||
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dev = qdev_create(NULL, "grlib,gptimer"); | ||
qdev_prop_set_uint32(dev, "nr-timers", nr_timers); | ||
qdev_prop_set_uint32(dev, "frequency", freq); | ||
qdev_prop_set_uint32(dev, "irq-line", base_irq); | ||
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if (qdev_init(dev)) { | ||
return NULL; | ||
} | ||
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sysbus_mmio_map(sysbus_from_qdev(dev), 0, base); | ||
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for (i = 0; i < nr_timers; i++) { | ||
sysbus_connect_irq(sysbus_from_qdev(dev), i, cpu_irqs[base_irq + i]); | ||
} | ||
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return dev; | ||
} | ||
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#endif /* ! _GRLIB_H_ */ |
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