diff options
Diffstat (limited to 'hw/ide')
| -rw-r--r-- | hw/ide/macio.c | 181 |
1 files changed, 75 insertions, 106 deletions
diff --git a/hw/ide/macio.c b/hw/ide/macio.c index db5db39..18ae952 100644 --- a/hw/ide/macio.c +++ b/hw/ide/macio.c @@ -255,131 +255,100 @@ static void pmac_ide_flush(DBDMA_io *io) } /* PowerMac IDE memory IO */ -static void pmac_ide_writeb (void *opaque, - hwaddr addr, uint32_t val) +static uint64_t pmac_ide_read(void *opaque, hwaddr addr, unsigned size) { MACIOIDEState *d = opaque; - - addr = (addr & 0xFFF) >> 4; - switch (addr) { - case 1 ... 7: - ide_ioport_write(&d->bus, addr, val); - break; - case 8: - case 22: - ide_cmd_write(&d->bus, 0, val); + uint64_t retval = 0xffffffff; + int reg = addr >> 4; + + switch (reg) { + case 0x0: + if (size == 2) { + retval = ide_data_readw(&d->bus, 0); + } else if (size == 4) { + retval = ide_data_readl(&d->bus, 0); + } break; - default: + case 0x1 ... 0x7: + if (size == 1) { + retval = ide_ioport_read(&d->bus, reg); + } break; - } -} - -static uint32_t pmac_ide_readb (void *opaque,hwaddr addr) -{ - uint8_t retval; - MACIOIDEState *d = opaque; - - addr = (addr & 0xFFF) >> 4; - switch (addr) { - case 1 ... 7: - retval = ide_ioport_read(&d->bus, addr); + case 0x8: + case 0x16: + if (size == 1) { + retval = ide_status_read(&d->bus, 0); + } break; - case 8: - case 22: - retval = ide_status_read(&d->bus, 0); + case 0x20: + if (size == 4) { + retval = d->timing_reg; + } break; - default: - retval = 0xFF; + case 0x30: + /* This is an interrupt state register that only exists + * in the KeyLargo and later variants. Bit 0x8000_0000 + * latches the DMA interrupt and has to be written to + * clear. Bit 0x4000_0000 is an image of the disk + * interrupt. MacOS X relies on this and will hang if + * we don't provide at least the disk interrupt + */ + if (size == 4) { + retval = d->irq_reg; + } break; } - return retval; -} -static void pmac_ide_writew (void *opaque, - hwaddr addr, uint32_t val) -{ - MACIOIDEState *d = opaque; - - addr = (addr & 0xFFF) >> 4; - val = bswap16(val); - if (addr == 0) { - ide_data_writew(&d->bus, 0, val); - } -} - -static uint32_t pmac_ide_readw (void *opaque,hwaddr addr) -{ - uint16_t retval; - MACIOIDEState *d = opaque; - - addr = (addr & 0xFFF) >> 4; - if (addr == 0) { - retval = ide_data_readw(&d->bus, 0); - } else { - retval = 0xFFFF; - } - retval = bswap16(retval); return retval; } -static void pmac_ide_writel (void *opaque, - hwaddr addr, uint32_t val) -{ - MACIOIDEState *d = opaque; - addr = (addr & 0xFFF) >> 4; - val = bswap32(val); - if (addr == 0) { - ide_data_writel(&d->bus, 0, val); - } else if (addr == 0x20) { - d->timing_reg = val; - } else if (addr == 0x30) { - if (val & 0x80000000u) { - d->irq_reg &= 0x7fffffff; - } - } -} - -static uint32_t pmac_ide_readl (void *opaque,hwaddr addr) +static void pmac_ide_write(void *opaque, hwaddr addr, uint64_t val, + unsigned size) { - uint32_t retval; MACIOIDEState *d = opaque; - - addr = (addr & 0xFFF) >> 4; - if (addr == 0) { - retval = ide_data_readl(&d->bus, 0); - } else if (addr == 0x20) { - retval = d->timing_reg; - } else if (addr == 0x30) { - /* This is an interrupt state register that only exists - * in the KeyLargo and later variants. Bit 0x8000_0000 - * latches the DMA interrupt and has to be written to - * clear. Bit 0x4000_0000 is an image of the disk - * interrupt. MacOS X relies on this and will hang if - * we don't provide at least the disk interrupt - */ - retval = d->irq_reg; - } else { - retval = 0xFFFFFFFF; + int reg = addr >> 4; + + switch (reg) { + case 0x0: + if (size == 2) { + ide_data_writew(&d->bus, 0, val); + } else if (size == 4) { + ide_data_writel(&d->bus, 0, val); + } + break; + case 0x1 ... 0x7: + if (size == 1) { + ide_ioport_write(&d->bus, reg, val); + } + break; + case 0x8: + case 0x16: + if (size == 1) { + ide_cmd_write(&d->bus, 0, val); + } + break; + case 0x20: + if (size == 4) { + d->timing_reg = val; + } + break; + case 0x30: + if (size == 4) { + if (val & 0x80000000u) { + d->irq_reg &= 0x7fffffff; + } + } + break; } - retval = bswap32(retval); - return retval; } static const MemoryRegionOps pmac_ide_ops = { - .old_mmio = { - .write = { - pmac_ide_writeb, - pmac_ide_writew, - pmac_ide_writel, - }, - .read = { - pmac_ide_readb, - pmac_ide_readw, - pmac_ide_readl, - }, - }, - .endianness = DEVICE_NATIVE_ENDIAN, + .read = pmac_ide_read, + .write = pmac_ide_write, + .valid.min_access_size = 1, + .valid.max_access_size = 4, + .endianness = DEVICE_LITTLE_ENDIAN, }; static const VMStateDescription vmstate_pmac = { |