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[PATCH rc3 18/30] hw/misc: Add Atmel power device
From: |
Aleksandar Markovic |
Subject: |
[PATCH rc3 18/30] hw/misc: Add Atmel power device |
Date: |
Sun, 26 Jan 2020 23:54:59 +0100 |
From: Michael Rolnik <address@hidden>
This is a simple device of just one register, whenver this register is
written it calls qemu_set_irq function for each of 8 bits/IRQs..
It is used to implement AVR Power Reduction
Signed-off-by: Michael Rolnik <address@hidden>
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
[rth: Squash include fix and file rename from f4bug, which was:]
Suggested-by: Aleksandar Markovic <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
Signed-off-by: Aleksandar Markovic <address@hidden>
---
hw/misc/Kconfig | 3 ++
hw/misc/Makefile.objs | 2 +
hw/misc/atmel_power.c | 112 ++++++++++++++++++++++++++++++++++++++++++
include/hw/misc/atmel_power.h | 46 +++++++++++++++++
4 files changed, 163 insertions(+)
create mode 100644 hw/misc/atmel_power.c
create mode 100644 include/hw/misc/atmel_power.h
diff --git a/hw/misc/Kconfig b/hw/misc/Kconfig
index bdd77d8..3a3c32e 100644
--- a/hw/misc/Kconfig
+++ b/hw/misc/Kconfig
@@ -131,4 +131,7 @@ config MAC_VIA
select MOS6522
select ADB
+config ATMEL_POWER
+ bool
+
source macio/Kconfig
diff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs
index da993f4..e605964 100644
--- a/hw/misc/Makefile.objs
+++ b/hw/misc/Makefile.objs
@@ -85,3 +85,5 @@ common-obj-$(CONFIG_NRF51_SOC) += nrf51_rng.o
obj-$(CONFIG_MAC_VIA) += mac_via.o
common-obj-$(CONFIG_GRLIB) += grlib_ahb_apb_pnp.o
+
+obj-$(CONFIG_ATMEL_POWER) += atmel_power.o
diff --git a/hw/misc/atmel_power.c b/hw/misc/atmel_power.c
new file mode 100644
index 0000000..adab729
--- /dev/null
+++ b/hw/misc/atmel_power.c
@@ -0,0 +1,112 @@
+/*
+ * Atmel AVR Power Reduction Management
+ *
+ * Copyright (c) 2019 Michael Rolnik
+ *
+ * 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.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/misc/atmel_power.h"
+#include "qemu/log.h"
+#include "hw/qdev-properties.h"
+#include "hw/irq.h"
+
+#define DB_PRINT(fmt, args...) /* Nothing */
+/*#define DB_PRINT(fmt, args...) printf("%s: " fmt "\n", __func__, ## args)*/
+
+static void avr_mask_reset(DeviceState *dev)
+{
+ AVRMaskState *s = AVR_MASK(dev);
+
+ s->val = 0x00;
+
+ for (int i = 0; i < 8; i++) {
+ qemu_set_irq(s->irq[i], 0);
+ }
+}
+
+static uint64_t avr_mask_read(void *opaque, hwaddr offset, unsigned size)
+{
+ assert(size == 1);
+ assert(offset == 0);
+ AVRMaskState *s = opaque;
+
+ return (uint64_t)s->val;
+}
+
+static void avr_mask_write(void *opaque, hwaddr offset,
+ uint64_t val64, unsigned size)
+{
+ assert(size == 1);
+ assert(offset == 0);
+ AVRMaskState *s = opaque;
+ uint8_t val8 = val64;
+
+ DB_PRINT("write %d to offset %d", val8, (uint8_t)offset);
+
+ s->val = val8;
+ for (int i = 0; i < 8; i++) {
+ qemu_set_irq(s->irq[i], (val8 & (1 << i)) != 0);
+ }
+}
+
+static const MemoryRegionOps avr_mask_ops = {
+ .read = avr_mask_read,
+ .write = avr_mask_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .impl = {.max_access_size = 1}
+};
+
+static void avr_mask_init(Object *dev)
+{
+ AVRMaskState *s = AVR_MASK(dev);
+ SysBusDevice *busdev = SYS_BUS_DEVICE(dev);
+
+ memory_region_init_io(&s->iomem, dev, &avr_mask_ops, s, TYPE_AVR_MASK,
+ 0x01);
+ sysbus_init_mmio(busdev, &s->iomem);
+
+ for (int i = 0; i < 8; i++) {
+ sysbus_init_irq(busdev, &s->irq[i]);
+ }
+ s->val = 0x00;
+}
+
+static void avr_mask_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->reset = avr_mask_reset;
+}
+
+static const TypeInfo avr_mask_info = {
+ .name = TYPE_AVR_MASK,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(AVRMaskState),
+ .class_init = avr_mask_class_init,
+ .instance_init = avr_mask_init,
+};
+
+static void avr_mask_register_types(void)
+{
+ type_register_static(&avr_mask_info);
+}
+
+type_init(avr_mask_register_types)
diff --git a/include/hw/misc/atmel_power.h b/include/hw/misc/atmel_power.h
new file mode 100644
index 0000000..5366e96
--- /dev/null
+++ b/include/hw/misc/atmel_power.h
@@ -0,0 +1,46 @@
+/*
+ * Atmel AVR Power Reduction Management
+ *
+ * Copyright (c) 2019 Michael Rolnik
+ *
+ * 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 HW_MISC_ATMEL_POWER_H
+#define HW_MISC_ATMEL_POWER_H
+
+#include "hw/sysbus.h"
+#include "hw/hw.h"
+
+
+#define TYPE_AVR_MASK "atmel-power"
+#define AVR_MASK(obj) OBJECT_CHECK(AVRMaskState, (obj), TYPE_AVR_MASK)
+
+typedef struct {
+ /* <private> */
+ SysBusDevice parent_obj;
+
+ /* <public> */
+ MemoryRegion iomem;
+
+ uint8_t val;
+ qemu_irq irq[8];
+} AVRMaskState;
+
+#endif /* HW_MISC_ATMEL_POWER_H */
--
2.7.4
- [PATCH rc3 14/30] target/avr: Add instruction translation - CPU main translation function, (continued)
- [PATCH rc3 14/30] target/avr: Add instruction translation - CPU main translation function, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 09/30] target/avr: Add instruction translation - Arithmetic and Logic Instructions, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 10/30] target/avr: Add instruction translation - Branch Instructions, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 03/30] target/avr: Add migration support, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 04/30] target/avr: Add GDB support, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 02/30] target/avr: Introduce AVR CPU class object, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 11/30] target/avr: Add instruction translation - Data Transfer Instructions, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 13/30] target/avr: Add instruction translation - MCU Control Instructions, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 21/30] target/avr: Add machine none test, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 18/30] hw/misc: Add Atmel power device,
Aleksandar Markovic <=
- [PATCH rc3 24/30] hw/avr: Add helper to load raw/ELF firmware binaries, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 22/30] target/avr: Update MAINTAINERS file, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 28/30] tests/boot-serial-test: Test some Arduino boards (AVR based), Aleksandar Markovic, 2020/01/26
- [PATCH rc3 27/30] target/avr: Update build system, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 29/30] tests/acceptance: Test the Arduino MEGA2560 board, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 20/30] target/avr: Register AVR support with the rest of QEMU, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 15/30] target/avr: Add instruction disassembly function, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 30/30] .travis.yml: Run the AVR acceptance tests, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 19/30] target/avr: Add section about AVR into QEMU documentation, Aleksandar Markovic, 2020/01/26