/* * QEMU VMPort emulation * * Copyright (C) 2007 Herv� 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; 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 int vmport_initfn(ISADevice *dev) { VMPortState *s = DO_UPCAST(VMPortState, dev, dev); register_ioport_read(0x5658, 1, 4, vmport_ioport_read, s); register_ioport_write(0x5658, 1, 4, vmport_ioport_write, s); isa_init_ioport(dev, 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 ISADeviceInfo vmport_info = { .qdev.name = "vmport", .qdev.size = sizeof(VMPortState), .qdev.no_user = 1, .init = vmport_initfn, }; static void vmport_dev_register(void) { isa_qdev_register(&vmport_info); } device_init(vmport_dev_register)