diff options
| -rw-r--r-- | hw/m68k/q800.c | 100 | ||||
| -rw-r--r-- | include/hw/m68k/q800.h | 1 |
2 files changed, 82 insertions, 19 deletions
diff --git a/hw/m68k/q800.c b/hw/m68k/q800.c index 359bdf3443..51b8d8ec3c 100644 --- a/hw/m68k/q800.c +++ b/hw/m68k/q800.c @@ -59,6 +59,7 @@ #define IO_BASE 0x50000000 #define IO_SLICE 0x00040000 +#define IO_SLICE_MASK (IO_SLICE - 1) #define IO_SIZE 0x04000000 #define VIA_BASE (IO_BASE + 0x00000) @@ -127,6 +128,68 @@ static uint8_t fake_mac_rom[] = { 0x60, 0xFE /* bras [self] */ }; +static MemTxResult macio_alias_read(void *opaque, hwaddr addr, uint64_t *data, + unsigned size, MemTxAttrs attrs) +{ + MemTxResult r; + uint32_t val; + + addr &= IO_SLICE_MASK; + addr |= IO_BASE; + + switch (size) { + case 4: + val = address_space_ldl_be(&address_space_memory, addr, attrs, &r); + break; + case 2: + val = address_space_lduw_be(&address_space_memory, addr, attrs, &r); + break; + case 1: + val = address_space_ldub(&address_space_memory, addr, attrs, &r); + break; + default: + g_assert_not_reached(); + } + + *data = val; + return r; +} + +static MemTxResult macio_alias_write(void *opaque, hwaddr addr, uint64_t value, + unsigned size, MemTxAttrs attrs) +{ + MemTxResult r; + + addr &= IO_SLICE_MASK; + addr |= IO_BASE; + + switch (size) { + case 4: + address_space_stl_be(&address_space_memory, addr, value, attrs, &r); + break; + case 2: + address_space_stw_be(&address_space_memory, addr, value, attrs, &r); + break; + case 1: + address_space_stb(&address_space_memory, addr, value, attrs, &r); + break; + default: + g_assert_not_reached(); + } + + return r; +} + +static const MemoryRegionOps macio_alias_ops = { + .read_with_attrs = macio_alias_read, + .write_with_attrs = macio_alias_write, + .endianness = DEVICE_BIG_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 4, + }, +}; + static void q800_machine_init(MachineState *machine) { Q800MachineState *m = Q800_MACHINE(machine); @@ -137,10 +200,8 @@ static void q800_machine_init(MachineState *machine) int bios_size; ram_addr_t initrd_base; int32_t initrd_size; - MemoryRegion *io; MemoryRegion *dp8393x_prom = g_new(MemoryRegion, 1); uint8_t *prom; - const int io_slice_nb = (IO_SIZE / IO_SLICE) - 1; int i, checksum; MacFbMode *macfb_mode; ram_addr_t ram_size = machine->ram_size; @@ -187,16 +248,10 @@ static void q800_machine_init(MachineState *machine) * Memory from IO_BASE to IO_BASE + IO_SLICE is repeated * from IO_BASE + IO_SLICE to IO_BASE + IO_SIZE */ - io = g_new(MemoryRegion, io_slice_nb); - for (i = 0; i < io_slice_nb; i++) { - char *name = g_strdup_printf("mac_m68k.io[%d]", i + 1); - - memory_region_init_alias(&io[i], NULL, name, get_system_memory(), - IO_BASE, IO_SLICE); - memory_region_add_subregion(get_system_memory(), - IO_BASE + (i + 1) * IO_SLICE, &io[i]); - g_free(name); - } + memory_region_init_io(&m->macio_alias, OBJECT(machine), &macio_alias_ops, + &m->macio, "mac-io.alias", IO_SIZE - IO_SLICE); + memory_region_add_subregion(get_system_memory(), IO_BASE + IO_SLICE, + &m->macio_alias); /* IRQ Glue */ object_initialize_child(OBJECT(machine), "glue", &m->glue, TYPE_GLUE); @@ -212,7 +267,8 @@ static void q800_machine_init(MachineState *machine) } sysbus = SYS_BUS_DEVICE(via1_dev); sysbus_realize_and_unref(sysbus, &error_fatal); - sysbus_mmio_map(sysbus, 1, VIA_BASE); + memory_region_add_subregion(&m->macio, VIA_BASE - IO_BASE, + sysbus_mmio_get_region(sysbus, 1)); sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(DEVICE(&m->glue), GLUE_IRQ_IN_VIA1)); /* A/UX mode */ @@ -230,7 +286,8 @@ static void q800_machine_init(MachineState *machine) via2_dev = qdev_new(TYPE_MOS6522_Q800_VIA2); sysbus = SYS_BUS_DEVICE(via2_dev); sysbus_realize_and_unref(sysbus, &error_fatal); - sysbus_mmio_map(sysbus, 1, VIA_BASE + VIA_SIZE); + memory_region_add_subregion(&m->macio, VIA_BASE - IO_BASE + VIA_SIZE, + sysbus_mmio_get_region(sysbus, 1)); sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(DEVICE(&m->glue), GLUE_IRQ_IN_VIA2)); @@ -264,7 +321,8 @@ static void q800_machine_init(MachineState *machine) OBJECT(get_system_memory()), &error_abort); sysbus = SYS_BUS_DEVICE(dev); sysbus_realize_and_unref(sysbus, &error_fatal); - sysbus_mmio_map(sysbus, 0, SONIC_BASE); + memory_region_add_subregion(&m->macio, SONIC_BASE - IO_BASE, + sysbus_mmio_get_region(sysbus, 0)); sysbus_connect_irq(sysbus, 0, qdev_get_gpio_in(DEVICE(&m->glue), GLUE_IRQ_IN_SONIC)); @@ -305,7 +363,8 @@ static void q800_machine_init(MachineState *machine) qdev_connect_gpio_out(escc_orgate, 0, qdev_get_gpio_in(DEVICE(&m->glue), GLUE_IRQ_IN_ESCC)); - sysbus_mmio_map(sysbus, 0, SCC_BASE); + memory_region_add_subregion(&m->macio, SCC_BASE - IO_BASE, + sysbus_mmio_get_region(sysbus, 0)); /* SCSI */ @@ -325,8 +384,10 @@ static void q800_machine_init(MachineState *machine) VIA2_IRQ_SCSI_BIT))); sysbus_connect_irq(sysbus, 1, qemu_irq_invert(qdev_get_gpio_in(via2_dev, VIA2_IRQ_SCSI_DATA_BIT))); - sysbus_mmio_map(sysbus, 0, ESP_BASE); - sysbus_mmio_map(sysbus, 1, ESP_PDMA); + memory_region_add_subregion(&m->macio, ESP_BASE - IO_BASE, + sysbus_mmio_get_region(sysbus, 0)); + memory_region_add_subregion(&m->macio, ESP_PDMA - IO_BASE, + sysbus_mmio_get_region(sysbus, 1)); scsi_bus_legacy_handle_cmdline(&esp->bus); @@ -334,7 +395,8 @@ static void q800_machine_init(MachineState *machine) dev = qdev_new(TYPE_SWIM); sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); - sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, SWIM_BASE); + memory_region_add_subregion(&m->macio, SWIM_BASE - IO_BASE, + sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0)); /* NuBus */ diff --git a/include/hw/m68k/q800.h b/include/hw/m68k/q800.h index 17067dfad7..1ed38bf0b1 100644 --- a/include/hw/m68k/q800.h +++ b/include/hw/m68k/q800.h @@ -40,6 +40,7 @@ struct Q800MachineState { MemoryRegion rom; GLUEState glue; MemoryRegion macio; + MemoryRegion macio_alias; }; #define TYPE_Q800_MACHINE MACHINE_TYPE_NAME("q800") |