Add qemu 2.4.0

[kvmfornfv.git] / qemu / hw / audio / cs4231.c

diff --git a/qemu/hw/audio/cs4231.c b/qemu/hw/audio/cs4231.c
new file mode 100644 (file)
index 0000000..6325a8c
--- /dev/null
+++ b/qemu/hw/audio/cs4231.c
@@ -0,0 +1,186 @@
+/*
+ * QEMU Crystal CS4231 audio chip emulation
+ *
+ * Copyright (c) 2006 Fabrice Bellard
+ *
+ * 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 "hw/sysbus.h"
+#include "trace.h"
+
+/*
+ * In addition to Crystal CS4231 there is a DMA controller on Sparc.
+ */
+#define CS_SIZE 0x40
+#define CS_REGS 16
+#define CS_DREGS 32
+#define CS_MAXDREG (CS_DREGS - 1)
+
+#define TYPE_CS4231 "SUNW,CS4231"
+#define CS4231(obj) \
+    OBJECT_CHECK(CSState, (obj), TYPE_CS4231)
+
+typedef struct CSState {
+    SysBusDevice parent_obj;
+
+    MemoryRegion iomem;
+    qemu_irq irq;
+    uint32_t regs[CS_REGS];
+    uint8_t dregs[CS_DREGS];
+} CSState;
+
+#define CS_RAP(s) ((s)->regs[0] & CS_MAXDREG)
+#define CS_VER 0xa0
+#define CS_CDC_VER 0x8a
+
+static void cs_reset(DeviceState *d)
+{
+    CSState *s = CS4231(d);
+
+    memset(s->regs, 0, CS_REGS * 4);
+    memset(s->dregs, 0, CS_DREGS);
+    s->dregs[12] = CS_CDC_VER;
+    s->dregs[25] = CS_VER;
+}
+
+static uint64_t cs_mem_read(void *opaque, hwaddr addr,
+                            unsigned size)
+{
+    CSState *s = opaque;
+    uint32_t saddr, ret;
+
+    saddr = addr >> 2;
+    switch (saddr) {
+    case 1:
+        switch (CS_RAP(s)) {
+        case 3: // Write only
+            ret = 0;
+            break;
+        default:
+            ret = s->dregs[CS_RAP(s)];
+            break;
+        }
+        trace_cs4231_mem_readl_dreg(CS_RAP(s), ret);
+        break;
+    default:
+        ret = s->regs[saddr];
+        trace_cs4231_mem_readl_reg(saddr, ret);
+        break;
+    }
+    return ret;
+}
+
+static void cs_mem_write(void *opaque, hwaddr addr,
+                         uint64_t val, unsigned size)
+{
+    CSState *s = opaque;
+    uint32_t saddr;
+
+    saddr = addr >> 2;
+    trace_cs4231_mem_writel_reg(saddr, s->regs[saddr], val);
+    switch (saddr) {
+    case 1:
+        trace_cs4231_mem_writel_dreg(CS_RAP(s), s->dregs[CS_RAP(s)], val);
+        switch(CS_RAP(s)) {
+        case 11:
+        case 25: // Read only
+            break;
+        case 12:
+            val &= 0x40;
+            val |= CS_CDC_VER; // Codec version
+            s->dregs[CS_RAP(s)] = val;
+            break;
+        default:
+            s->dregs[CS_RAP(s)] = val;
+            break;
+        }
+        break;
+    case 2: // Read only
+        break;
+    case 4:
+        if (val & 1) {
+            cs_reset(DEVICE(s));
+        }
+        val &= 0x7f;
+        s->regs[saddr] = val;
+        break;
+    default:
+        s->regs[saddr] = val;
+        break;
+    }
+}
+
+static const MemoryRegionOps cs_mem_ops = {
+    .read = cs_mem_read,
+    .write = cs_mem_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+};
+
+static const VMStateDescription vmstate_cs4231 = {
+    .name ="cs4231",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT32_ARRAY(regs, CSState, CS_REGS),
+        VMSTATE_UINT8_ARRAY(dregs, CSState, CS_DREGS),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static int cs4231_init1(SysBusDevice *dev)
+{
+    CSState *s = CS4231(dev);
+
+    memory_region_init_io(&s->iomem, OBJECT(s), &cs_mem_ops, s, "cs4321",
+                          CS_SIZE);
+    sysbus_init_mmio(dev, &s->iomem);
+    sysbus_init_irq(dev, &s->irq);
+
+    return 0;
+}
+
+static Property cs4231_properties[] = {
+    {.name = NULL},
+};
+
+static void cs4231_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+    k->init = cs4231_init1;
+    dc->reset = cs_reset;
+    dc->vmsd = &vmstate_cs4231;
+    dc->props = cs4231_properties;
+}
+
+static const TypeInfo cs4231_info = {
+    .name          = TYPE_CS4231,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(CSState),
+    .class_init    = cs4231_class_init,
+};
+
+static void cs4231_register_types(void)
+{
+    type_register_static(&cs4231_info);
+}
+
+type_init(cs4231_register_types)