Revision d46ccfce
| b/hw/milkymist-pfpu.c | ||
|---|---|---|
| 118 | 118 |
|
| 119 | 119 |
struct MilkymistPFPUState {
|
| 120 | 120 |
SysBusDevice busdev; |
| 121 |
MemoryRegion regs_region; |
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CharDriverState *chr; |
| 122 | 123 |
qemu_irq irq; |
| 123 | 124 |
|
| ... | ... | |
| 379 | 380 |
return (512 * s->regs[R_CODEPAGE]) + addr - MICROCODE_BEGIN; |
| 380 | 381 |
} |
| 381 | 382 |
|
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static uint32_t pfpu_read(void *opaque, target_phys_addr_t addr) |
|
| 383 |
static uint64_t pfpu_read(void *opaque, target_phys_addr_t addr, |
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unsigned size) |
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{
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MilkymistPFPUState *s = opaque; |
| 385 | 387 |
uint32_t r = 0; |
| ... | ... | |
| 418 | 420 |
return r; |
| 419 | 421 |
} |
| 420 | 422 |
|
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static void |
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pfpu_write(void *opaque, target_phys_addr_t addr, uint32_t value)
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static void pfpu_write(void *opaque, target_phys_addr_t addr, uint64_t value,
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unsigned size)
|
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{
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MilkymistPFPUState *s = opaque; |
| 425 | 427 |
|
| ... | ... | |
| 459 | 461 |
} |
| 460 | 462 |
} |
| 461 | 463 |
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static CPUReadMemoryFunc * const pfpu_read_fn[] = {
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NULL, |
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NULL, |
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&pfpu_read, |
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}; |
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static CPUWriteMemoryFunc * const pfpu_write_fn[] = {
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NULL, |
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NULL, |
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&pfpu_write, |
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static const MemoryRegionOps pfpu_mmio_ops = {
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.read = pfpu_read, |
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.write = pfpu_write, |
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.valid = {
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.min_access_size = 4, |
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.max_access_size = 4, |
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}, |
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.endianness = DEVICE_NATIVE_ENDIAN, |
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| 472 | 472 |
}; |
| 473 | 473 |
|
| 474 | 474 |
static void milkymist_pfpu_reset(DeviceState *d) |
| ... | ... | |
| 494 | 494 |
static int milkymist_pfpu_init(SysBusDevice *dev) |
| 495 | 495 |
{
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| 496 | 496 |
MilkymistPFPUState *s = FROM_SYSBUS(typeof(*s), dev); |
| 497 |
int pfpu_regs; |
|
| 498 | 497 |
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| 499 | 498 |
sysbus_init_irq(dev, &s->irq); |
| 500 | 499 |
|
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pfpu_regs = cpu_register_io_memory(pfpu_read_fn, pfpu_write_fn, s,
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DEVICE_NATIVE_ENDIAN);
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sysbus_init_mmio(dev, MICROCODE_END * 4, pfpu_regs);
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memory_region_init_io(&s->regs_region, &pfpu_mmio_ops, s,
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"milkymist-pfpu", MICROCODE_END * 4);
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sysbus_init_mmio_region(dev, &s->regs_region);
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| 504 | 503 |
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| 505 | 504 |
return 0; |
| 506 | 505 |
} |
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