2 * QEMU Crystal CS4231 audio chip emulation
4 * Copyright (c) 2006 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 #include "qemu/osdep.h"
26 #include "hw/sysbus.h"
30 * In addition to Crystal CS4231 there is a DMA controller on Sparc.
35 #define CS_MAXDREG (CS_DREGS - 1)
37 #define TYPE_CS4231 "SUNW,CS4231"
39 OBJECT_CHECK(CSState, (obj), TYPE_CS4231)
41 typedef struct CSState {
42 SysBusDevice parent_obj;
46 uint32_t regs[CS_REGS];
47 uint8_t dregs[CS_DREGS];
50 #define CS_RAP(s) ((s)->regs[0] & CS_MAXDREG)
52 #define CS_CDC_VER 0x8a
54 static void cs_reset(DeviceState *d)
56 CSState *s = CS4231(d);
58 memset(s->regs, 0, CS_REGS * 4);
59 memset(s->dregs, 0, CS_DREGS);
60 s->dregs[12] = CS_CDC_VER;
61 s->dregs[25] = CS_VER;
64 static uint64_t cs_mem_read(void *opaque, hwaddr addr,
78 ret = s->dregs[CS_RAP(s)];
81 trace_cs4231_mem_readl_dreg(CS_RAP(s), ret);
85 trace_cs4231_mem_readl_reg(saddr, ret);
91 static void cs_mem_write(void *opaque, hwaddr addr,
92 uint64_t val, unsigned size)
98 trace_cs4231_mem_writel_reg(saddr, s->regs[saddr], val);
101 trace_cs4231_mem_writel_dreg(CS_RAP(s), s->dregs[CS_RAP(s)], val);
104 case 25: // Read only
108 val |= CS_CDC_VER; // Codec version
109 s->dregs[CS_RAP(s)] = val;
112 s->dregs[CS_RAP(s)] = val;
123 s->regs[saddr] = val;
126 s->regs[saddr] = val;
131 static const MemoryRegionOps cs_mem_ops = {
133 .write = cs_mem_write,
134 .endianness = DEVICE_NATIVE_ENDIAN,
137 static const VMStateDescription vmstate_cs4231 = {
140 .minimum_version_id = 1,
141 .fields = (VMStateField[]) {
142 VMSTATE_UINT32_ARRAY(regs, CSState, CS_REGS),
143 VMSTATE_UINT8_ARRAY(dregs, CSState, CS_DREGS),
144 VMSTATE_END_OF_LIST()
148 static void cs4231_init(Object *obj)
150 CSState *s = CS4231(obj);
151 SysBusDevice *dev = SYS_BUS_DEVICE(obj);
153 memory_region_init_io(&s->iomem, obj, &cs_mem_ops, s, "cs4321",
155 sysbus_init_mmio(dev, &s->iomem);
156 sysbus_init_irq(dev, &s->irq);
159 static Property cs4231_properties[] = {
163 static void cs4231_class_init(ObjectClass *klass, void *data)
165 DeviceClass *dc = DEVICE_CLASS(klass);
167 dc->reset = cs_reset;
168 dc->vmsd = &vmstate_cs4231;
169 dc->props = cs4231_properties;
172 static const TypeInfo cs4231_info = {
174 .parent = TYPE_SYS_BUS_DEVICE,
175 .instance_size = sizeof(CSState),
176 .instance_init = cs4231_init,
177 .class_init = cs4231_class_init,
180 static void cs4231_register_types(void)
182 type_register_static(&cs4231_info);
185 type_init(cs4231_register_types)