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.
33 #define CS_MAXADDR 0x3f
34 #define CS_SIZE (CS_MAXADDR + 1)
37 #define CS_MAXDREG (CS_DREGS - 1)
39 typedef struct CSState {
40 uint32_t regs[CS_REGS];
41 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, args...) \
51 do { printf("CS: " fmt , ##args); } while (0)
53 #define DPRINTF(fmt, args...)
56 static void cs_reset(void *opaque)
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)
71 saddr = (addr & CS_MAXADDR) >> 2;
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)
97 saddr = (addr & CS_MAXADDR) >> 2;
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), 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;
122 s->regs[saddr] = val;
125 s->regs[saddr] = val;
130 static CPUReadMemoryFunc *cs_mem_read[3] = {
136 static CPUWriteMemoryFunc *cs_mem_write[3] = {
142 static void cs_save(QEMUFile *f, void *opaque)
147 for (i = 0; i < CS_REGS; i++)
148 qemu_put_be32s(f, &s->regs[i]);
150 qemu_put_buffer(f, s->dregs, CS_DREGS);
153 static int cs_load(QEMUFile *f, void *opaque, int version_id)
161 for (i = 0; i < CS_REGS; i++)
162 qemu_get_be32s(f, &s->regs[i]);
164 qemu_get_buffer(f, s->dregs, CS_DREGS);
168 void cs_init(target_phys_addr_t base, int irq, void *intctl)
173 s = qemu_mallocz(sizeof(CSState));
177 cs_io_memory = cpu_register_io_memory(0, cs_mem_read, cs_mem_write, s);
178 cpu_register_physical_memory(base, CS_SIZE, cs_io_memory);
179 register_savevm("cs4231", base, 1, cs_save, cs_load, s);
180 qemu_register_reset(cs_reset, s);