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authorFabien Chouteau <chouteau@adacore.com>2011-01-24 12:56:52 +0100
committerBlue Swirl <blauwirbel@gmail.com>2011-01-24 20:54:33 +0000
commit0f3a4a01ebafe93055069418c9d65cc7b1493b41 (patch)
treedc5668beb485753bc3695fb3c97a910d68d40b6a /hw/grlib.h
parentb835e919f022d768abdf00e8dc94f1a23fdcab15 (diff)
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SPARC: Emulation of GRLIB GPTimer
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 <chouteau@adacore.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'hw/grlib.h')
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1 files changed, 65 insertions, 0 deletions
diff --git a/hw/grlib.h b/hw/grlib.h
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+++ b/hw/grlib.h
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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.
+ */
+
+#ifndef _GRLIB_H_
+#define _GRLIB_H_
+
+#include "qdev.h"
+#include "sysbus.h"
+
+/* Emulation of GrLib device is base on the GRLIB IP Core User's Manual:
+ * http://www.gaisler.com/products/grlib/grip.pdf
+ */
+
+/* GPTimer */
+
+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;
+
+ 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);
+
+ if (qdev_init(dev)) {
+ return NULL;
+ }
+
+ sysbus_mmio_map(sysbus_from_qdev(dev), 0, base);
+
+ for (i = 0; i < nr_timers; i++) {
+ sysbus_connect_irq(sysbus_from_qdev(dev), i, cpu_irqs[base_irq + i]);
+ }
+
+ return dev;
+}
+
+#endif /* ! _GRLIB_H_ */