/* * 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 "qemu/osdep.h" #include "hw/isa/pc87312.h" #include "hw/qdev-properties.h" #include "migration/vmstate.h" #include "qapi/error.h" #include "qemu/error-report.h" #include "qemu/module.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 bool is_parallel_enabled(ISASuperIODevice *sio, uint8_t index) { PC87312State *s = PC87312(sio); return index ? false : s->regs[REG_FER] & FER_PARALLEL_EN; } static const uint16_t parallel_base[] = { 0x378, 0x3bc, 0x278, 0x00 }; static uint16_t get_parallel_iobase(ISASuperIODevice *sio, uint8_t index) { PC87312State *s = PC87312(sio); return parallel_base[s->regs[REG_FAR] & FAR_PARALLEL_ADDR]; } static const unsigned int parallel_irq[] = { 5, 7, 5, 0 }; static unsigned int get_parallel_irq(ISASuperIODevice *sio, uint8_t index) { PC87312State *s = PC87312(sio); 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 uint16_t uart_base[2][4] = { { 0x3e8, 0x338, 0x2e8, 0x220 }, { 0x2e8, 0x238, 0x2e0, 0x228 } }; static uint16_t get_uart_iobase(ISASuperIODevice *sio, uint8_t i) { PC87312State *s = PC87312(sio); 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 unsigned int get_uart_irq(ISASuperIODevice *sio, uint8_t i) { PC87312State *s = PC87312(sio); int idx; idx = (s->regs[REG_FAR] >> (2 * i + 2)) & 0x3; return (idx & 1) ? 3 : 4; } static bool is_uart_enabled(ISASuperIODevice *sio, uint8_t i) { PC87312State *s = PC87312(sio); return s->regs[REG_FER] & (FER_UART1_EN << i); } /* Floppy controller */ static bool is_fdc_enabled(ISASuperIODevice *sio, uint8_t index) { PC87312State *s = PC87312(sio); assert(!index); return s->regs[REG_FER] & FER_FDC_EN; } static uint16_t get_fdc_iobase(ISASuperIODevice *sio, uint8_t index) { PC87312State *s = PC87312(sio); assert(!index); return (s->regs[REG_FER] & FER_FDC_ADDR) ? 0x370 : 0x3f0; } static unsigned int get_fdc_irq(ISASuperIODevice *sio, uint8_t index) { assert(!index); return 6; } /* IDE controller */ static bool is_ide_enabled(ISASuperIODevice *sio, uint8_t index) { PC87312State *s = PC87312(sio); return s->regs[REG_FER] & FER_IDE_EN; } static uint16_t get_ide_iobase(ISASuperIODevice *sio, uint8_t index) { PC87312State *s = PC87312(sio); if (index == 1) { return get_ide_iobase(sio, 0) + 0x206; } return (s->regs[REG_FER] & FER_IDE_ADDR) ? 0x170 : 0x1f0; } static unsigned int get_ide_irq(ISASuperIODevice *sio, uint8_t index) { assert(index == 0); return 14; } 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; ISADevice *isa; Error *local_err = NULL; s = PC87312(dev); isa = ISA_DEVICE(dev); isa_register_ioport(isa, &s->io, s->iobase); pc87312_hard_reset(s); ISA_SUPERIO_GET_CLASS(dev)->parent_realize(dev, &local_err); if (local_err) { error_propagate(errp, local_err); return; } } 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 = (const 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_UINT16("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); ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass); device_class_set_legacy_reset(dc, pc87312_reset); dc->vmsd = &vmstate_pc87312; device_class_set_parent_realize(dc, pc87312_realize, &sc->parent_realize); device_class_set_props(dc, pc87312_properties); sc->parallel = (ISASuperIOFuncs){ .count = 1, .is_enabled = is_parallel_enabled, .get_iobase = get_parallel_iobase, .get_irq = get_parallel_irq, }; sc->serial = (ISASuperIOFuncs){ .count = 2, .is_enabled = is_uart_enabled, .get_iobase = get_uart_iobase, .get_irq = get_uart_irq, }; sc->floppy = (ISASuperIOFuncs){ .count = 1, .is_enabled = is_fdc_enabled, .get_iobase = get_fdc_iobase, .get_irq = get_fdc_irq, }; sc->ide = (ISASuperIOFuncs){ .count = 1, .is_enabled = is_ide_enabled, .get_iobase = get_ide_iobase, .get_irq = get_ide_irq, }; } static const TypeInfo pc87312_type_info = { .name = TYPE_PC87312, .parent = TYPE_ISA_SUPERIO, .instance_size = sizeof(PC87312State), .instance_init = pc87312_initfn, .class_init = pc87312_class_init, /* FIXME use a qdev drive property instead of drive_get() */ }; static void pc87312_register_types(void) { type_register_static(&pc87312_type_info); } type_init(pc87312_register_types)