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
31 * In addition to Crystal CS4231 there is a DMA controller on Sparc.
36 #define CS_MAXDREG (CS_DREGS - 1)
38 typedef struct CSState {
41 uint32_t regs[CS_REGS];
42 uint8_t dregs[CS_DREGS];
45 #define CS_RAP(s) ((s)->regs[0] & CS_MAXDREG)
47 #define CS_CDC_VER 0x8a
50 #define DPRINTF(fmt, ...) \
51 do { printf("CS: " fmt , ## __VA_ARGS__); } while (0)
53 #define DPRINTF(fmt, ...)
56 static void cs_reset(DeviceState *d)
58 CSState *s = container_of(d, CSState, busdev.qdev);
60 memset(s->regs, 0, CS_REGS * 4);
61 memset(s->dregs, 0, CS_DREGS);
62 s->dregs[12] = CS_CDC_VER;
63 s->dregs[25] = CS_VER;
66 static uint32_t cs_mem_readl(void *opaque, target_phys_addr_t addr)
79 ret = s->dregs[CS_RAP(s)];
82 DPRINTF("read dreg[%d]: 0x%8.8x\n", CS_RAP(s), ret);
86 DPRINTF("read reg[%d]: 0x%8.8x\n", saddr, ret);
92 static void cs_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
98 DPRINTF("write reg[%d]: 0x%8.8x -> 0x%8.8x\n", saddr, s->regs[saddr], val);
101 DPRINTF("write dreg[%d]: 0x%2.2x -> 0x%2.2x\n", CS_RAP(s),
102 s->dregs[CS_RAP(s)], val);
105 case 25: // Read only
109 val |= CS_CDC_VER; // Codec version
110 s->dregs[CS_RAP(s)] = val;
113 s->dregs[CS_RAP(s)] = val;
121 cs_reset(&s->busdev.qdev);
124 s->regs[saddr] = val;
127 s->regs[saddr] = val;
132 static CPUReadMemoryFunc * const cs_mem_read[3] = {
138 static CPUWriteMemoryFunc * const cs_mem_write[3] = {
144 static const VMStateDescription vmstate_cs4231 = {
147 .minimum_version_id = 1,
148 .minimum_version_id_old = 1,
149 .fields = (VMStateField []) {
150 VMSTATE_UINT32_ARRAY(regs, CSState, CS_REGS),
151 VMSTATE_UINT8_ARRAY(dregs, CSState, CS_DREGS),
152 VMSTATE_END_OF_LIST()
156 static int cs4231_init1(SysBusDevice *dev)
159 CSState *s = FROM_SYSBUS(CSState, dev);
161 io = cpu_register_io_memory(cs_mem_read, cs_mem_write, s);
162 sysbus_init_mmio(dev, CS_SIZE, io);
163 sysbus_init_irq(dev, &s->irq);
165 cs_reset(&s->busdev.qdev);
169 static SysBusDeviceInfo cs4231_info = {
170 .init = cs4231_init1,
171 .qdev.name = "SUNW,CS4231",
172 .qdev.size = sizeof(CSState),
173 .qdev.vmsd = &vmstate_cs4231,
174 .qdev.reset = cs_reset,
175 .qdev.props = (Property[]) {
180 static void cs4231_register_devices(void)
182 sysbus_register_withprop(&cs4231_info);
185 device_init(cs4231_register_devices)