hw/misc: Add the STM32F4xx EXTI device

Signed-off-by: Alistair Francis <alistair@alistair23.me>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: ef941d59fd8658589d34ed432e1d6dfdcf7fb1d0.1576658572.git.alistair@alistair23.me
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 60 insertions, 0 deletions

diff --git a/include/hw/misc/stm32f4xx_exti.h b/include/hw/misc/stm32f4xx_exti.h
new file mode 100644
index 0000000000..707036a41b
--- /dev/null
+++ b/include/hw/misc/stm32f4xx_exti.h
@@ -0,0 +1,60 @@
+/*
+ * STM32F4XX EXTI
+ *
+ * Copyright (c) 2014 Alistair Francis <alistair@alistair23.me>
+ *
+ * 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_STM_EXTI_H
+#define HW_STM_EXTI_H
+
+#include "hw/sysbus.h"
+#include "hw/hw.h"
+
+#define EXTI_IMR   0x00
+#define EXTI_EMR   0x04
+#define EXTI_RTSR  0x08
+#define EXTI_FTSR  0x0C
+#define EXTI_SWIER 0x10
+#define EXTI_PR    0x14
+
+#define TYPE_STM32F4XX_EXTI "stm32f4xx-exti"
+#define STM32F4XX_EXTI(obj) \
+    OBJECT_CHECK(STM32F4xxExtiState, (obj), TYPE_STM32F4XX_EXTI)
+
+#define NUM_GPIO_EVENT_IN_LINES 16
+#define NUM_INTERRUPT_OUT_LINES 16
+
+typedef struct {
+    SysBusDevice parent_obj;
+
+    MemoryRegion mmio;
+
+    uint32_t exti_imr;
+    uint32_t exti_emr;
+    uint32_t exti_rtsr;
+    uint32_t exti_ftsr;
+    uint32_t exti_swier;
+    uint32_t exti_pr;
+
+    qemu_irq irq[NUM_INTERRUPT_OUT_LINES];
+} STM32F4xxExtiState;
+
+#endif