diff options
Diffstat (limited to 'qemu/hw/isa/pc87312.c')
| -rw-r--r-- | qemu/hw/isa/pc87312.c | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/qemu/hw/isa/pc87312.c b/qemu/hw/isa/pc87312.c new file mode 100644 index 000000000..3b1fcec53 --- /dev/null +++ b/qemu/hw/isa/pc87312.c @@ -0,0 +1,402 @@ +/* + * QEMU National Semiconductor PC87312 (Super I/O) + * + * Copyright (c) 2010-2012 Herve Poussineau + * Copyright (c) 2011-2012 Andreas Färber + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "hw/isa/pc87312.h" +#include "qemu/error-report.h" +#include "sysemu/block-backend.h" +#include "sysemu/blockdev.h" +#include "sysemu/sysemu.h" +#include "sysemu/char.h" +#include "trace.h" + + +#define REG_FER 0 +#define REG_FAR 1 +#define REG_PTR 2 + +#define FER_PARALLEL_EN 0x01 +#define FER_UART1_EN 0x02 +#define FER_UART2_EN 0x04 +#define FER_FDC_EN 0x08 +#define FER_FDC_4 0x10 +#define FER_FDC_ADDR 0x20 +#define FER_IDE_EN 0x40 +#define FER_IDE_ADDR 0x80 + +#define FAR_PARALLEL_ADDR 0x03 +#define FAR_UART1_ADDR 0x0C +#define FAR_UART2_ADDR 0x30 +#define FAR_UART_3_4 0xC0 + +#define PTR_POWER_DOWN 0x01 +#define PTR_CLOCK_DOWN 0x02 +#define PTR_PWDN 0x04 +#define PTR_IRQ_5_7 0x08 +#define PTR_UART1_TEST 0x10 +#define PTR_UART2_TEST 0x20 +#define PTR_LOCK_CONF 0x40 +#define PTR_EPP_MODE 0x80 + + +/* Parallel port */ + +static inline bool is_parallel_enabled(PC87312State *s) +{ + return s->regs[REG_FER] & FER_PARALLEL_EN; +} + +static const uint32_t parallel_base[] = { 0x378, 0x3bc, 0x278, 0x00 }; + +static inline uint32_t get_parallel_iobase(PC87312State *s) +{ + return parallel_base[s->regs[REG_FAR] & FAR_PARALLEL_ADDR]; +} + +static const uint32_t parallel_irq[] = { 5, 7, 5, 0 }; + +static inline uint32_t get_parallel_irq(PC87312State *s) +{ + int idx; + idx = (s->regs[REG_FAR] & FAR_PARALLEL_ADDR); + if (idx == 0) { + return (s->regs[REG_PTR] & PTR_IRQ_5_7) ? 7 : 5; + } else { + return parallel_irq[idx]; + } +} + + +/* UARTs */ + +static const uint32_t uart_base[2][4] = { + { 0x3e8, 0x338, 0x2e8, 0x220 }, + { 0x2e8, 0x238, 0x2e0, 0x228 } +}; + +static inline uint32_t get_uart_iobase(PC87312State *s, int i) +{ + int idx; + idx = (s->regs[REG_FAR] >> (2 * i + 2)) & 0x3; + if (idx == 0) { + return 0x3f8; + } else if (idx == 1) { + return 0x2f8; + } else { + return uart_base[idx & 1][(s->regs[REG_FAR] & FAR_UART_3_4) >> 6]; + } +} + +static inline uint32_t get_uart_irq(PC87312State *s, int i) +{ + int idx; + idx = (s->regs[REG_FAR] >> (2 * i + 2)) & 0x3; + return (idx & 1) ? 3 : 4; +} + +static inline bool is_uart_enabled(PC87312State *s, int i) +{ + return s->regs[REG_FER] & (FER_UART1_EN << i); +} + + +/* Floppy controller */ + +static inline bool is_fdc_enabled(PC87312State *s) +{ + return s->regs[REG_FER] & FER_FDC_EN; +} + +static inline uint32_t get_fdc_iobase(PC87312State *s) +{ + return (s->regs[REG_FER] & FER_FDC_ADDR) ? 0x370 : 0x3f0; +} + + +/* IDE controller */ + +static inline bool is_ide_enabled(PC87312State *s) +{ + return s->regs[REG_FER] & FER_IDE_EN; +} + +static inline uint32_t get_ide_iobase(PC87312State *s) +{ + return (s->regs[REG_FER] & FER_IDE_ADDR) ? 0x170 : 0x1f0; +} + + +static void reconfigure_devices(PC87312State *s) +{ + error_report("pc87312: unsupported device reconfiguration (%02x %02x %02x)", + s->regs[REG_FER], s->regs[REG_FAR], s->regs[REG_PTR]); +} + +static void pc87312_soft_reset(PC87312State *s) +{ + static const uint8_t fer_init[] = { + 0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4f, 0x4b, 0x4b, + 0x4b, 0x4b, 0x4b, 0x4b, 0x0f, 0x0f, 0x0f, 0x0f, + 0x49, 0x49, 0x49, 0x49, 0x07, 0x07, 0x07, 0x07, + 0x47, 0x47, 0x47, 0x47, 0x47, 0x47, 0x08, 0x00, + }; + static const uint8_t far_init[] = { + 0x10, 0x11, 0x11, 0x39, 0x24, 0x38, 0x00, 0x01, + 0x01, 0x09, 0x08, 0x08, 0x10, 0x11, 0x39, 0x24, + 0x00, 0x01, 0x01, 0x00, 0x10, 0x11, 0x39, 0x24, + 0x10, 0x11, 0x11, 0x39, 0x24, 0x38, 0x10, 0x10, + }; + static const uint8_t ptr_init[] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, + }; + + s->read_id_step = 0; + s->selected_index = REG_FER; + + s->regs[REG_FER] = fer_init[s->config & 0x1f]; + s->regs[REG_FAR] = far_init[s->config & 0x1f]; + s->regs[REG_PTR] = ptr_init[s->config & 0x1f]; +} + +static void pc87312_hard_reset(PC87312State *s) +{ + pc87312_soft_reset(s); +} + +static void pc87312_io_write(void *opaque, hwaddr addr, uint64_t val, + unsigned int size) +{ + PC87312State *s = opaque; + + trace_pc87312_io_write(addr, val); + + if ((addr & 1) == 0) { + /* Index register */ + s->read_id_step = 2; + s->selected_index = val; + } else { + /* Data register */ + if (s->selected_index < 3) { + s->regs[s->selected_index] = val; + reconfigure_devices(s); + } + } +} + +static uint64_t pc87312_io_read(void *opaque, hwaddr addr, unsigned int size) +{ + PC87312State *s = opaque; + uint32_t val; + + if ((addr & 1) == 0) { + /* Index register */ + if (s->read_id_step++ == 0) { + val = 0x88; + } else if (s->read_id_step++ == 1) { + val = 0; + } else { + val = s->selected_index; + } + } else { + /* Data register */ + if (s->selected_index < 3) { + val = s->regs[s->selected_index]; + } else { + /* Invalid selected index */ + val = 0; + } + } + + trace_pc87312_io_read(addr, val); + return val; +} + +static const MemoryRegionOps pc87312_io_ops = { + .read = pc87312_io_read, + .write = pc87312_io_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 1, + }, +}; + +static int pc87312_post_load(void *opaque, int version_id) +{ + PC87312State *s = opaque; + + reconfigure_devices(s); + return 0; +} + +static void pc87312_reset(DeviceState *d) +{ + PC87312State *s = PC87312(d); + + pc87312_soft_reset(s); +} + +static void pc87312_realize(DeviceState *dev, Error **errp) +{ + PC87312State *s; + DeviceState *d; + ISADevice *isa; + ISABus *bus; + CharDriverState *chr; + DriveInfo *drive; + char name[5]; + int i; + + s = PC87312(dev); + isa = ISA_DEVICE(dev); + bus = isa_bus_from_device(isa); + isa_register_ioport(isa, &s->io, s->iobase); + pc87312_hard_reset(s); + + if (is_parallel_enabled(s)) { + /* FIXME use a qdev chardev prop instead of parallel_hds[] */ + chr = parallel_hds[0]; + if (chr == NULL) { + chr = qemu_chr_new("par0", "null", NULL); + } + isa = isa_create(bus, "isa-parallel"); + d = DEVICE(isa); + qdev_prop_set_uint32(d, "index", 0); + qdev_prop_set_uint32(d, "iobase", get_parallel_iobase(s)); + qdev_prop_set_uint32(d, "irq", get_parallel_irq(s)); + qdev_prop_set_chr(d, "chardev", chr); + qdev_init_nofail(d); + s->parallel.dev = isa; + trace_pc87312_info_parallel(get_parallel_iobase(s), + get_parallel_irq(s)); + } + + for (i = 0; i < 2; i++) { + if (is_uart_enabled(s, i)) { + /* FIXME use a qdev chardev prop instead of serial_hds[] */ + chr = serial_hds[i]; + if (chr == NULL) { + snprintf(name, sizeof(name), "ser%d", i); + chr = qemu_chr_new(name, "null", NULL); + } + isa = isa_create(bus, "isa-serial"); + d = DEVICE(isa); + qdev_prop_set_uint32(d, "index", i); + qdev_prop_set_uint32(d, "iobase", get_uart_iobase(s, i)); + qdev_prop_set_uint32(d, "irq", get_uart_irq(s, i)); + qdev_prop_set_chr(d, "chardev", chr); + qdev_init_nofail(d); + s->uart[i].dev = isa; + trace_pc87312_info_serial(i, get_uart_iobase(s, i), + get_uart_irq(s, i)); + } + } + + if (is_fdc_enabled(s)) { + isa = isa_create(bus, "isa-fdc"); + d = DEVICE(isa); + qdev_prop_set_uint32(d, "iobase", get_fdc_iobase(s)); + qdev_prop_set_uint32(d, "irq", 6); + /* FIXME use a qdev drive property instead of drive_get() */ + drive = drive_get(IF_FLOPPY, 0, 0); + if (drive != NULL) { + qdev_prop_set_drive_nofail(d, "driveA", + blk_by_legacy_dinfo(drive)); + } + /* FIXME use a qdev drive property instead of drive_get() */ + drive = drive_get(IF_FLOPPY, 0, 1); + if (drive != NULL) { + qdev_prop_set_drive_nofail(d, "driveB", + blk_by_legacy_dinfo(drive)); + } + qdev_init_nofail(d); + s->fdc.dev = isa; + trace_pc87312_info_floppy(get_fdc_iobase(s)); + } + + if (is_ide_enabled(s)) { + isa = isa_create(bus, "isa-ide"); + d = DEVICE(isa); + qdev_prop_set_uint32(d, "iobase", get_ide_iobase(s)); + qdev_prop_set_uint32(d, "iobase2", get_ide_iobase(s) + 0x206); + qdev_prop_set_uint32(d, "irq", 14); + qdev_init_nofail(d); + s->ide.dev = isa; + trace_pc87312_info_ide(get_ide_iobase(s)); + } +} + +static void pc87312_initfn(Object *obj) +{ + PC87312State *s = PC87312(obj); + + memory_region_init_io(&s->io, obj, &pc87312_io_ops, s, "pc87312", 2); +} + +static const VMStateDescription vmstate_pc87312 = { + .name = "pc87312", + .version_id = 1, + .minimum_version_id = 1, + .post_load = pc87312_post_load, + .fields = (VMStateField[]) { + VMSTATE_UINT8(read_id_step, PC87312State), + VMSTATE_UINT8(selected_index, PC87312State), + VMSTATE_UINT8_ARRAY(regs, PC87312State, 3), + VMSTATE_END_OF_LIST() + } +}; + +static Property pc87312_properties[] = { + DEFINE_PROP_UINT32("iobase", PC87312State, iobase, 0x398), + DEFINE_PROP_UINT8("config", PC87312State, config, 1), + DEFINE_PROP_END_OF_LIST() +}; + +static void pc87312_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->realize = pc87312_realize; + dc->reset = pc87312_reset; + dc->vmsd = &vmstate_pc87312; + dc->props = pc87312_properties; +} + +static const TypeInfo pc87312_type_info = { + .name = TYPE_PC87312, + .parent = TYPE_ISA_DEVICE, + .instance_size = sizeof(PC87312State), + .instance_init = pc87312_initfn, + .class_init = pc87312_class_init, +}; + +static void pc87312_register_types(void) +{ + type_register_static(&pc87312_type_info); +} + +type_init(pc87312_register_types) |