2007-08-26 19:48:12 +02:00
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/*
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* QEMU VMPort emulation
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*
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* Copyright (C) 2007 Herv<EFBFBD> Poussineau
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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2007-11-17 18:14:51 +01:00
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#include "hw.h"
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#include "isa.h"
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#include "pc.h"
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#include "sysemu.h"
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2010-02-03 21:16:41 +01:00
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#include "kvm.h"
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2011-02-05 15:34:41 +01:00
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#include "qdev.h"
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2007-08-26 19:48:12 +02:00
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2008-08-19 21:13:06 +02:00
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//#define VMPORT_DEBUG
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2007-08-26 19:48:12 +02:00
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#define VMPORT_CMD_GETVERSION 0x0a
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#define VMPORT_CMD_GETRAMSIZE 0x14
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#define VMPORT_ENTRIES 0x2c
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#define VMPORT_MAGIC 0x564D5868
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typedef struct _VMPortState
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{
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2011-02-05 15:34:41 +01:00
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ISADevice dev;
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2007-08-26 19:48:12 +02:00
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IOPortReadFunc *func[VMPORT_ENTRIES];
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void *opaque[VMPORT_ENTRIES];
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} VMPortState;
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static VMPortState port_state;
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void vmport_register(unsigned char command, IOPortReadFunc *func, void *opaque)
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{
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if (command >= VMPORT_ENTRIES)
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return;
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port_state.func[command] = func;
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port_state.opaque[command] = opaque;
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}
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static uint32_t vmport_ioport_read(void *opaque, uint32_t addr)
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{
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VMPortState *s = opaque;
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2008-04-07 21:47:25 +02:00
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CPUState *env = cpu_single_env;
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2007-08-26 19:48:12 +02:00
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unsigned char command;
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2007-10-09 05:19:01 +02:00
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uint32_t eax;
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2007-08-26 19:48:12 +02:00
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2010-02-03 21:16:41 +01:00
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cpu_synchronize_state(env);
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2008-04-07 21:47:25 +02:00
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eax = env->regs[R_EAX];
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2007-08-26 19:48:12 +02:00
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if (eax != VMPORT_MAGIC)
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return eax;
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2008-04-07 21:47:25 +02:00
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command = env->regs[R_ECX];
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2007-08-26 19:48:12 +02:00
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if (command >= VMPORT_ENTRIES)
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return eax;
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if (!s->func[command])
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{
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2008-08-19 21:13:06 +02:00
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#ifdef VMPORT_DEBUG
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fprintf(stderr, "vmport: unknown command %x\n", command);
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#endif
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2007-08-26 19:48:12 +02:00
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return eax;
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}
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return s->func[command](s->opaque[command], addr);
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}
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2008-07-28 20:58:02 +02:00
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static void vmport_ioport_write(void *opaque, uint32_t addr, uint32_t val)
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{
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CPUState *env = cpu_single_env;
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env->regs[R_EAX] = vmport_ioport_read(opaque, addr);
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}
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2007-08-26 19:48:12 +02:00
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static uint32_t vmport_cmd_get_version(void *opaque, uint32_t addr)
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{
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2008-04-07 21:47:25 +02:00
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CPUState *env = cpu_single_env;
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2007-08-26 19:48:12 +02:00
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env->regs[R_EBX] = VMPORT_MAGIC;
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return 6;
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}
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static uint32_t vmport_cmd_ram_size(void *opaque, uint32_t addr)
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{
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2008-04-07 21:47:25 +02:00
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CPUState *env = cpu_single_env;
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2007-08-26 19:48:12 +02:00
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env->regs[R_EBX] = 0x1177;
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return ram_size;
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}
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2011-02-05 15:34:52 +01:00
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/* vmmouse helpers */
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void vmmouse_get_data(uint32_t *data)
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{
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CPUState *env = cpu_single_env;
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data[0] = env->regs[R_EAX]; data[1] = env->regs[R_EBX];
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data[2] = env->regs[R_ECX]; data[3] = env->regs[R_EDX];
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data[4] = env->regs[R_ESI]; data[5] = env->regs[R_EDI];
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}
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void vmmouse_set_data(const uint32_t *data)
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{
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CPUState *env = cpu_single_env;
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env->regs[R_EAX] = data[0]; env->regs[R_EBX] = data[1];
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env->regs[R_ECX] = data[2]; env->regs[R_EDX] = data[3];
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env->regs[R_ESI] = data[4]; env->regs[R_EDI] = data[5];
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}
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2011-02-05 15:34:41 +01:00
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static int vmport_initfn(ISADevice *dev)
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2007-08-26 19:48:12 +02:00
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{
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2011-02-05 15:34:41 +01:00
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VMPortState *s = DO_UPCAST(VMPortState, dev, dev);
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2007-08-26 19:48:12 +02:00
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2011-02-05 15:34:41 +01:00
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register_ioport_read(0x5658, 1, 4, vmport_ioport_read, &s);
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register_ioport_write(0x5658, 1, 4, vmport_ioport_write, &s);
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isa_init_ioport(dev, 0x5658);
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2007-08-26 19:48:12 +02:00
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/* Register some generic port commands */
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2008-04-07 21:47:25 +02:00
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vmport_register(VMPORT_CMD_GETVERSION, vmport_cmd_get_version, NULL);
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vmport_register(VMPORT_CMD_GETRAMSIZE, vmport_cmd_ram_size, NULL);
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2011-02-05 15:34:41 +01:00
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return 0;
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2007-08-26 19:48:12 +02:00
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}
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2011-02-05 15:34:41 +01:00
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static ISADeviceInfo vmport_info = {
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.qdev.name = "vmport",
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.qdev.size = sizeof(VMPortState),
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.qdev.no_user = 1,
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.init = vmport_initfn,
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};
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static void vmport_dev_register(void)
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{
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isa_qdev_register(&vmport_info);
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}
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device_init(vmport_dev_register)
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