| /* |
| * QEMU VMPort emulation |
| * |
| * Copyright (C) 2007 Hervé Poussineau |
| * |
| * 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.h" |
| #include "isa.h" |
| #include "pc.h" |
| #include "kvm.h" |
| #include "qdev.h" |
| |
| //#define VMPORT_DEBUG |
| |
| #define VMPORT_CMD_GETVERSION 0x0a |
| #define VMPORT_CMD_GETRAMSIZE 0x14 |
| |
| #define VMPORT_ENTRIES 0x2c |
| #define VMPORT_MAGIC 0x564D5868 |
| |
| typedef struct _VMPortState |
| { |
| ISADevice dev; |
| MemoryRegion io; |
| IOPortReadFunc *func[VMPORT_ENTRIES]; |
| void *opaque[VMPORT_ENTRIES]; |
| } VMPortState; |
| |
| static VMPortState *port_state; |
| |
| void vmport_register(unsigned char command, IOPortReadFunc *func, void *opaque) |
| { |
| if (command >= VMPORT_ENTRIES) |
| return; |
| |
| port_state->func[command] = func; |
| port_state->opaque[command] = opaque; |
| } |
| |
| static uint32_t vmport_ioport_read(void *opaque, uint32_t addr) |
| { |
| VMPortState *s = opaque; |
| CPUState *env = cpu_single_env; |
| unsigned char command; |
| uint32_t eax; |
| |
| cpu_synchronize_state(env); |
| |
| eax = env->regs[R_EAX]; |
| if (eax != VMPORT_MAGIC) |
| return eax; |
| |
| command = env->regs[R_ECX]; |
| if (command >= VMPORT_ENTRIES) |
| return eax; |
| if (!s->func[command]) |
| { |
| #ifdef VMPORT_DEBUG |
| fprintf(stderr, "vmport: unknown command %x\n", command); |
| #endif |
| return eax; |
| } |
| |
| return s->func[command](s->opaque[command], addr); |
| } |
| |
| static void vmport_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
| { |
| CPUState *env = cpu_single_env; |
| |
| env->regs[R_EAX] = vmport_ioport_read(opaque, addr); |
| } |
| |
| static uint32_t vmport_cmd_get_version(void *opaque, uint32_t addr) |
| { |
| CPUState *env = cpu_single_env; |
| env->regs[R_EBX] = VMPORT_MAGIC; |
| return 6; |
| } |
| |
| static uint32_t vmport_cmd_ram_size(void *opaque, uint32_t addr) |
| { |
| CPUState *env = cpu_single_env; |
| env->regs[R_EBX] = 0x1177; |
| return ram_size; |
| } |
| |
| /* vmmouse helpers */ |
| void vmmouse_get_data(uint32_t *data) |
| { |
| CPUState *env = cpu_single_env; |
| |
| data[0] = env->regs[R_EAX]; data[1] = env->regs[R_EBX]; |
| data[2] = env->regs[R_ECX]; data[3] = env->regs[R_EDX]; |
| data[4] = env->regs[R_ESI]; data[5] = env->regs[R_EDI]; |
| } |
| |
| void vmmouse_set_data(const uint32_t *data) |
| { |
| CPUState *env = cpu_single_env; |
| |
| env->regs[R_EAX] = data[0]; env->regs[R_EBX] = data[1]; |
| env->regs[R_ECX] = data[2]; env->regs[R_EDX] = data[3]; |
| env->regs[R_ESI] = data[4]; env->regs[R_EDI] = data[5]; |
| } |
| |
| static const MemoryRegionPortio vmport_portio[] = { |
| {0, 1, 4, .read = vmport_ioport_read, .write = vmport_ioport_write }, |
| PORTIO_END_OF_LIST(), |
| }; |
| |
| static const MemoryRegionOps vmport_ops = { |
| .old_portio = vmport_portio |
| }; |
| |
| static int vmport_initfn(ISADevice *dev) |
| { |
| VMPortState *s = DO_UPCAST(VMPortState, dev, dev); |
| |
| memory_region_init_io(&s->io, &vmport_ops, s, "vmport", 1); |
| isa_register_ioport(dev, &s->io, 0x5658); |
| |
| port_state = s; |
| /* Register some generic port commands */ |
| vmport_register(VMPORT_CMD_GETVERSION, vmport_cmd_get_version, NULL); |
| vmport_register(VMPORT_CMD_GETRAMSIZE, vmport_cmd_ram_size, NULL); |
| return 0; |
| } |
| |
| static void vmport_class_initfn(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| ISADeviceClass *ic = ISA_DEVICE_CLASS(klass); |
| ic->init = vmport_initfn; |
| dc->no_user = 1; |
| } |
| |
| static TypeInfo vmport_info = { |
| .name = "vmport", |
| .parent = TYPE_ISA_DEVICE, |
| .instance_size = sizeof(VMPortState), |
| .class_init = vmport_class_initfn, |
| }; |
| |
| static void vmport_dev_register(void) |
| { |
| type_register_static(&vmport_info); |
| } |
| device_init(vmport_dev_register) |