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[Qemu-devel] [PATCH 03/11] Goldfish: Added an interrupt device.
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From: |
Patrick Jackson |
|
Subject: |
[Qemu-devel] [PATCH 03/11] Goldfish: Added an interrupt device. |
|
Date: |
Mon, 22 Aug 2011 05:38:52 -0400 |
---
Makefile.target | 2 +-
hw/android_arm.c | 5 ++
hw/goldfish_device.h | 1 +
hw/goldfish_interrupt.c | 182 +++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 189 insertions(+), 1 deletions(-)
create mode 100644 hw/goldfish_interrupt.c
diff --git a/Makefile.target b/Makefile.target
index eea7e8b..c251b99 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -360,7 +360,7 @@ obj-arm-y += syborg_virtio.o
obj-arm-y += vexpress.o
obj-arm-y += strongarm.o
obj-arm-y += collie.o
-obj-arm-y += android_arm.o goldfish_device.o
+obj-arm-y += android_arm.o goldfish_device.o goldfish_interrupt.o
obj-sh4-y = shix.o r2d.o sh7750.o sh7750_regnames.o tc58128.o
obj-sh4-y += sh_timer.o sh_serial.o sh_intc.o sh_pci.o sm501.o
diff --git a/hw/android_arm.c b/hw/android_arm.c
index a6ba12c..aaa0b26 100644
--- a/hw/android_arm.c
+++ b/hw/android_arm.c
@@ -14,6 +14,7 @@
#include "devices.h"
#include "net.h"
#include "sysemu.h"
+#include "goldfish_device.h"
#include "audio/audio.h"
#include "arm-misc.h"
#include "console.h"
@@ -38,6 +39,7 @@ static void android_arm_init_(ram_addr_t ram_size,
CPUState *env;
qemu_irq *cpu_pic;
ram_addr_t ram_offset;
+ DeviceState *gf_int;
if (!cpu_model)
cpu_model = "arm926";
@@ -48,6 +50,9 @@ static void android_arm_init_(ram_addr_t ram_size,
cpu_register_physical_memory(0, ram_size, ram_offset | IO_MEM_RAM);
cpu_pic = arm_pic_init_cpu(env);
+ GoldfishBus *gbus = goldfish_bus_init(0xff001000, 1);
+ gf_int = goldfish_int_create(gbus, 0xff000000, cpu_pic[ARM_PIC_CPU_IRQ], cpu_pic[ARM_PIC_CPU_FIQ]);
+ goldfish_device_init(gf_int, 0xff010000, 10);
info.ram_size = ram_size;
info.kernel_filename = kernel_filename;
diff --git a/hw/goldfish_device.h b/hw/goldfish_device.h
index 3d13cc0..cee6abc 100644
--- a/hw/goldfish_device.h
+++ b/hw/goldfish_device.h
@@ -42,6 +42,7 @@ typedef struct GoldfishBus {
/* QDEV device creation */
GoldfishBus *goldfish_bus_init(uint32_t base, uint32_t irq);
+DeviceState *goldfish_int_create(GoldfishBus *gbus, uint32_t base, qemu_irq parent_irq, qemu_irq parent_fiq);
/* Global functions provided by Goldfish devices */
void goldfish_bus_register_withprop(GoldfishDeviceInfo *info);
diff --git a/hw/goldfish_interrupt.c b/hw/goldfish_interrupt.c
new file mode 100644
index 0000000..e46e661
--- /dev/null
+++ b/hw/goldfish_interrupt.c
@@ -0,0 +1,182 @@
+/* Copyright (C) 2007-2008 The Android Open Source Project
+**
+** This software is licensed under the terms of the GNU General Public
+** License version 2, as published by the Free Software Foundation, and
+** may be copied, distributed, and modified under those terms.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+** GNU General Public License for more details.
+*/
+#include "hw.h"
+#include "arm-misc.h"
+#include "goldfish_device.h"
+#include "irq.h"
+
+enum {
+ INTERRUPT_STATUS = 0x00, // number of pending interrupts
+ INTERRUPT_NUMBER = 0x04,
+ INTERRUPT_DISABLE_ALL = 0x08,
+ INTERRUPT_DISABLE = 0x0c,
+ INTERRUPT_ENABLE = 0x10
+};
+
+typedef struct GoldfishInterruptDevice {
+ GoldfishDevice dev;
+ uint32_t level;
+ uint32_t pending_count;
+ uint32_t irq_enabled;
+ uint32_t fiq_enabled;
+ qemu_irq parent_irq;
+ qemu_irq parent_fiq;
+} GoldfishInterruptDevice;
+
+static void goldfish_int_update(GoldfishInterruptDevice *s)
+{
+ uint32_t flags;
+
+ flags = (s->level & s->irq_enabled);
+ qemu_set_irq(s->parent_irq, flags != 0);
+
+ flags = (s->level & s->fiq_enabled);
+ qemu_set_irq(s->parent_fiq, flags != 0);
+}
+
+static void goldfish_int_set_irq(void *opaque, int irq, int level)
+{
+ GoldfishInterruptDevice *s = (GoldfishInterruptDevice *)opaque;
+ uint32_t mask = (1U << irq);
+
+ if(level) {
+ if(!(s->level & mask)) {
+ if(s->irq_enabled & mask)
+ s->pending_count++;
+ s->level |= mask;
+ }
+ }
+ else {
+ if(s->level & mask) {
+ if(s->irq_enabled & mask)
+ s->pending_count--;
+ s->level &= ~mask;
+ }
+ }
+ goldfish_int_update(s);
+}
+
+static uint32_t goldfish_int_read(void *opaque, target_phys_addr_t offset)
+{
+ GoldfishInterruptDevice *s = (GoldfishInterruptDevice *)opaque;
+
+ switch (offset) {
+ case INTERRUPT_STATUS: /* IRQ_STATUS */
+ return s->pending_count;
+ case INTERRUPT_NUMBER: {
+ int i;
+ uint32_t pending = s->level & s->irq_enabled;
+ for(i = 0; i < 32; i++) {
+ if(pending & (1U << i))
+ return i;
+ }
+ return 0;
+ }
+ default:
+ cpu_abort (cpu_single_env, "goldfish_int_read: Bad offset %x\n", offset);
+ return 0;
+ }
+}
+
+static void goldfish_int_write(void *opaque, target_phys_addr_t offset, uint32_t value)
+{
+ GoldfishInterruptDevice *s = (GoldfishInterruptDevice *)opaque;
+ uint32_t mask = (1U << value);
+
+ switch (offset) {
+ case INTERRUPT_DISABLE_ALL:
+ s->pending_count = 0;
+ s->level = 0;
+ break;
+
+ case INTERRUPT_DISABLE:
+ if(s->irq_enabled & mask) {
+ if(s->level & mask)
+ s->pending_count--;
+ s->irq_enabled &= ~mask;
+ }
+ break;
+ case INTERRUPT_ENABLE:
+ if(!(s->irq_enabled & mask)) {
+ s->irq_enabled |= mask;
+ if(s->level & mask)
+ s->pending_count++;
+ }
+ break;
+
+ default:
+ cpu_abort (cpu_single_env, "goldfish_int_write: Bad offset %x\n", offset);
+ return;
+ }
+ goldfish_int_update(s);
+}
+
+static CPUReadMemoryFunc *goldfish_int_readfn[] = {
+ goldfish_int_read,
+ goldfish_int_read,
+ goldfish_int_read
+};
+
+static CPUWriteMemoryFunc *goldfish_int_writefn[] = {
+ goldfish_int_write,
+ goldfish_int_write,
+ goldfish_int_write
+};
+
+static int goldfish_int_init(GoldfishDevice *dev)
+{
+ GoldfishInterruptDevice *idev = (GoldfishInterruptDevice *)dev;
+
+ qdev_init_gpio_in(&idev->dev.qdev, goldfish_int_set_irq, 32);
+
+ return 0;
+}
+
+DeviceState *goldfish_int_create(GoldfishBus *gbus, uint32_t base, qemu_irq parent_irq, qemu_irq parent_fiq)
+{
+ DeviceState *dev;
+ GoldfishDevice *gdev;
+ GoldfishInterruptDevice *idev;
+ char *name = (char *)"goldfish_int";
+
+ dev = qdev_create(&gbus->bus, name);
+ qdev_prop_set_string(dev, "name", name);
+ qdev_prop_set_uint32(dev, "base", base);
+ qdev_init_nofail(dev);
+ gdev = (GoldfishDevice *)dev;
+ idev = DO_UPCAST(GoldfishInterruptDevice, dev, gdev);
+ idev->parent_irq = parent_irq;
+ idev->parent_fiq = parent_fiq;
+
+ return dev;
+}
+
+static GoldfishDeviceInfo goldfish_int_info = {
+ .init = goldfish_int_init,
+ .readfn = goldfish_int_readfn,
+ .writefn = goldfish_int_writefn,
+ .qdev.size = sizeof(GoldfishInterruptDevice),
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_UINT32("id", GoldfishDevice, id, -1),
+ DEFINE_PROP_UINT32("base", GoldfishDevice, base, 0),
+ DEFINE_PROP_UINT32("size", GoldfishDevice, size, 0x1000),
+ DEFINE_PROP_STRING("name", GoldfishDevice, name),
+ DEFINE_PROP_END_OF_LIST(),
+ },
+};
+
+static void goldfish_int_register(void)
+{
+ goldfish_bus_register_withprop(&goldfish_int_info);
+}
+device_init(goldfish_int_register);
--
1.7.4.1
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