Add qemu 2.4.0

[kvmfornfv.git] / qemu / hw / input / pl050.c

diff --git a/qemu/hw/input/pl050.c b/qemu/hw/input/pl050.c
new file mode 100644 (file)
index 0000000..c1b08d5
--- /dev/null
+++ b/qemu/hw/input/pl050.c
@@ -0,0 +1,205 @@
+/*
+ * Arm PrimeCell PL050 Keyboard / Mouse Interface
+ *
+ * Copyright (c) 2006-2007 CodeSourcery.
+ * Written by Paul Brook
+ *
+ * This code is licensed under the GPL.
+ */
+
+#include "hw/sysbus.h"
+#include "hw/input/ps2.h"
+
+#define TYPE_PL050 "pl050"
+#define PL050(obj) OBJECT_CHECK(PL050State, (obj), TYPE_PL050)
+
+typedef struct PL050State {
+    SysBusDevice parent_obj;
+
+    MemoryRegion iomem;
+    void *dev;
+    uint32_t cr;
+    uint32_t clk;
+    uint32_t last;
+    int pending;
+    qemu_irq irq;
+    bool is_mouse;
+} PL050State;
+
+static const VMStateDescription vmstate_pl050 = {
+    .name = "pl050",
+    .version_id = 2,
+    .minimum_version_id = 2,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT32(cr, PL050State),
+        VMSTATE_UINT32(clk, PL050State),
+        VMSTATE_UINT32(last, PL050State),
+        VMSTATE_INT32(pending, PL050State),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+#define PL050_TXEMPTY         (1 << 6)
+#define PL050_TXBUSY          (1 << 5)
+#define PL050_RXFULL          (1 << 4)
+#define PL050_RXBUSY          (1 << 3)
+#define PL050_RXPARITY        (1 << 2)
+#define PL050_KMIC            (1 << 1)
+#define PL050_KMID            (1 << 0)
+
+static const unsigned char pl050_id[] =
+{ 0x50, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
+
+static void pl050_update(void *opaque, int level)
+{
+    PL050State *s = (PL050State *)opaque;
+    int raise;
+
+    s->pending = level;
+    raise = (s->pending && (s->cr & 0x10) != 0)
+            || (s->cr & 0x08) != 0;
+    qemu_set_irq(s->irq, raise);
+}
+
+static uint64_t pl050_read(void *opaque, hwaddr offset,
+                           unsigned size)
+{
+    PL050State *s = (PL050State *)opaque;
+    if (offset >= 0xfe0 && offset < 0x1000)
+        return pl050_id[(offset - 0xfe0) >> 2];
+
+    switch (offset >> 2) {
+    case 0: /* KMICR */
+        return s->cr;
+    case 1: /* KMISTAT */
+        {
+            uint8_t val;
+            uint32_t stat;
+
+            val = s->last;
+            val = val ^ (val >> 4);
+            val = val ^ (val >> 2);
+            val = (val ^ (val >> 1)) & 1;
+
+            stat = PL050_TXEMPTY;
+            if (val)
+                stat |= PL050_RXPARITY;
+            if (s->pending)
+                stat |= PL050_RXFULL;
+
+            return stat;
+        }
+    case 2: /* KMIDATA */
+        if (s->pending)
+            s->last = ps2_read_data(s->dev);
+        return s->last;
+    case 3: /* KMICLKDIV */
+        return s->clk;
+    case 4: /* KMIIR */
+        return s->pending | 2;
+    default:
+        qemu_log_mask(LOG_GUEST_ERROR,
+                      "pl050_read: Bad offset %x\n", (int)offset);
+        return 0;
+    }
+}
+
+static void pl050_write(void *opaque, hwaddr offset,
+                        uint64_t value, unsigned size)
+{
+    PL050State *s = (PL050State *)opaque;
+    switch (offset >> 2) {
+    case 0: /* KMICR */
+        s->cr = value;
+        pl050_update(s, s->pending);
+        /* ??? Need to implement the enable/disable bit.  */
+        break;
+    case 2: /* KMIDATA */
+        /* ??? This should toggle the TX interrupt line.  */
+        /* ??? This means kbd/mouse can block each other.  */
+        if (s->is_mouse) {
+            ps2_write_mouse(s->dev, value);
+        } else {
+            ps2_write_keyboard(s->dev, value);
+        }
+        break;
+    case 3: /* KMICLKDIV */
+        s->clk = value;
+        return;
+    default:
+        qemu_log_mask(LOG_GUEST_ERROR,
+                      "pl050_write: Bad offset %x\n", (int)offset);
+    }
+}
+static const MemoryRegionOps pl050_ops = {
+    .read = pl050_read,
+    .write = pl050_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static int pl050_initfn(SysBusDevice *dev)
+{
+    PL050State *s = PL050(dev);
+
+    memory_region_init_io(&s->iomem, OBJECT(s), &pl050_ops, s, "pl050", 0x1000);
+    sysbus_init_mmio(dev, &s->iomem);
+    sysbus_init_irq(dev, &s->irq);
+    if (s->is_mouse) {
+        s->dev = ps2_mouse_init(pl050_update, s);
+    } else {
+        s->dev = ps2_kbd_init(pl050_update, s);
+    }
+    return 0;
+}
+
+static void pl050_keyboard_init(Object *obj)
+{
+    PL050State *s = PL050(obj);
+
+    s->is_mouse = false;
+}
+
+static void pl050_mouse_init(Object *obj)
+{
+    PL050State *s = PL050(obj);
+
+    s->is_mouse = true;
+}
+
+static const TypeInfo pl050_kbd_info = {
+    .name          = "pl050_keyboard",
+    .parent        = TYPE_PL050,
+    .instance_init = pl050_keyboard_init,
+};
+
+static const TypeInfo pl050_mouse_info = {
+    .name          = "pl050_mouse",
+    .parent        = TYPE_PL050,
+    .instance_init = pl050_mouse_init,
+};
+
+static void pl050_class_init(ObjectClass *oc, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(oc);
+    SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(oc);
+
+    sdc->init = pl050_initfn;
+    dc->vmsd = &vmstate_pl050;
+}
+
+static const TypeInfo pl050_type_info = {
+    .name          = TYPE_PL050,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(PL050State),
+    .abstract      = true,
+    .class_init    = pl050_class_init,
+};
+
+static void pl050_register_types(void)
+{
+    type_register_static(&pl050_type_info);
+    type_register_static(&pl050_kbd_info);
+    type_register_static(&pl050_mouse_info);
+}
+
+type_init(pl050_register_types)