mirror of
https://gitlab.com/qemu-project/qemu
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510 lines
12 KiB
C
510 lines
12 KiB
C
/*
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* QEMU System Emulator
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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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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#include <stdint.h>
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#include <stdarg.h>
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#ifndef _WIN32
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#include <sys/types.h>
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#include <sys/mman.h>
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#endif
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#include "config.h"
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#include "monitor.h"
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#include "sysemu.h"
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#include "arch_init.h"
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#include "audio/audio.h"
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#include "hw/pc.h"
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#include "hw/pci.h"
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#include "hw/audiodev.h"
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#include "kvm.h"
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#include "migration.h"
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#include "net.h"
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#include "gdbstub.h"
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#include "hw/smbios.h"
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#ifdef TARGET_SPARC
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int graphic_width = 1024;
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int graphic_height = 768;
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int graphic_depth = 8;
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#else
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int graphic_width = 800;
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int graphic_height = 600;
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int graphic_depth = 15;
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#endif
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const char arch_config_name[] = CONFIG_QEMU_CONFDIR "/target-" TARGET_ARCH ".conf";
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#if defined(TARGET_ALPHA)
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#define QEMU_ARCH QEMU_ARCH_ALPHA
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#elif defined(TARGET_ARM)
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#define QEMU_ARCH QEMU_ARCH_ARM
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#elif defined(TARGET_CRIS)
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#define QEMU_ARCH QEMU_ARCH_CRIS
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#elif defined(TARGET_I386)
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#define QEMU_ARCH QEMU_ARCH_I386
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#elif defined(TARGET_M68K)
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#define QEMU_ARCH QEMU_ARCH_M68K
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#elif defined(TARGET_MICROBLAZE)
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#define QEMU_ARCH QEMU_ARCH_MICROBLAZE
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#elif defined(TARGET_MIPS)
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#define QEMU_ARCH QEMU_ARCH_MIPS
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#elif defined(TARGET_PPC)
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#define QEMU_ARCH QEMU_ARCH_PPC
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#elif defined(TARGET_S390X)
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#define QEMU_ARCH QEMU_ARCH_S390X
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#elif defined(TARGET_SH4)
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#define QEMU_ARCH QEMU_ARCH_SH4
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#elif defined(TARGET_SPARC)
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#define QEMU_ARCH QEMU_ARCH_SPARC
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#endif
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const uint32_t arch_type = QEMU_ARCH;
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/***********************************************************/
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/* ram save/restore */
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#define RAM_SAVE_FLAG_FULL 0x01 /* Obsolete, not used anymore */
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#define RAM_SAVE_FLAG_COMPRESS 0x02
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#define RAM_SAVE_FLAG_MEM_SIZE 0x04
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#define RAM_SAVE_FLAG_PAGE 0x08
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#define RAM_SAVE_FLAG_EOS 0x10
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static int is_dup_page(uint8_t *page, uint8_t ch)
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{
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uint32_t val = ch << 24 | ch << 16 | ch << 8 | ch;
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uint32_t *array = (uint32_t *)page;
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int i;
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for (i = 0; i < (TARGET_PAGE_SIZE / 4); i++) {
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if (array[i] != val) {
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return 0;
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}
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}
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return 1;
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}
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static int ram_save_block(QEMUFile *f)
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{
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static ram_addr_t current_addr = 0;
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ram_addr_t saved_addr = current_addr;
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ram_addr_t addr = 0;
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int found = 0;
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while (addr < last_ram_offset) {
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if (cpu_physical_memory_get_dirty(current_addr, MIGRATION_DIRTY_FLAG)) {
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uint8_t *p;
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cpu_physical_memory_reset_dirty(current_addr,
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current_addr + TARGET_PAGE_SIZE,
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MIGRATION_DIRTY_FLAG);
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p = qemu_get_ram_ptr(current_addr);
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if (is_dup_page(p, *p)) {
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qemu_put_be64(f, current_addr | RAM_SAVE_FLAG_COMPRESS);
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qemu_put_byte(f, *p);
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} else {
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qemu_put_be64(f, current_addr | RAM_SAVE_FLAG_PAGE);
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qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
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}
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found = 1;
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break;
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}
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addr += TARGET_PAGE_SIZE;
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current_addr = (saved_addr + addr) % last_ram_offset;
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}
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return found;
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}
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static uint64_t bytes_transferred;
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static ram_addr_t ram_save_remaining(void)
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{
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ram_addr_t addr;
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ram_addr_t count = 0;
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for (addr = 0; addr < last_ram_offset; addr += TARGET_PAGE_SIZE) {
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if (cpu_physical_memory_get_dirty(addr, MIGRATION_DIRTY_FLAG)) {
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count++;
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}
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}
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return count;
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}
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uint64_t ram_bytes_remaining(void)
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{
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return ram_save_remaining() * TARGET_PAGE_SIZE;
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}
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uint64_t ram_bytes_transferred(void)
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{
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return bytes_transferred;
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}
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uint64_t ram_bytes_total(void)
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{
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return last_ram_offset;
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}
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int ram_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque)
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{
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ram_addr_t addr;
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uint64_t bytes_transferred_last;
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double bwidth = 0;
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uint64_t expected_time = 0;
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if (stage < 0) {
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cpu_physical_memory_set_dirty_tracking(0);
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return 0;
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}
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if (cpu_physical_sync_dirty_bitmap(0, TARGET_PHYS_ADDR_MAX) != 0) {
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qemu_file_set_error(f);
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return 0;
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}
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if (stage == 1) {
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bytes_transferred = 0;
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/* Make sure all dirty bits are set */
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for (addr = 0; addr < last_ram_offset; addr += TARGET_PAGE_SIZE) {
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if (!cpu_physical_memory_get_dirty(addr, MIGRATION_DIRTY_FLAG)) {
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cpu_physical_memory_set_dirty(addr);
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}
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}
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/* Enable dirty memory tracking */
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cpu_physical_memory_set_dirty_tracking(1);
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qemu_put_be64(f, last_ram_offset | RAM_SAVE_FLAG_MEM_SIZE);
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}
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bytes_transferred_last = bytes_transferred;
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bwidth = qemu_get_clock_ns(rt_clock);
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while (!qemu_file_rate_limit(f)) {
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int ret;
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ret = ram_save_block(f);
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bytes_transferred += ret * TARGET_PAGE_SIZE;
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if (ret == 0) { /* no more blocks */
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break;
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}
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}
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bwidth = qemu_get_clock_ns(rt_clock) - bwidth;
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bwidth = (bytes_transferred - bytes_transferred_last) / bwidth;
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/* if we haven't transferred anything this round, force expected_time to a
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* a very high value, but without crashing */
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if (bwidth == 0) {
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bwidth = 0.000001;
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}
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/* try transferring iterative blocks of memory */
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if (stage == 3) {
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/* flush all remaining blocks regardless of rate limiting */
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while (ram_save_block(f) != 0) {
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bytes_transferred += TARGET_PAGE_SIZE;
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}
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cpu_physical_memory_set_dirty_tracking(0);
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}
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qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
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expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
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return (stage == 2) && (expected_time <= migrate_max_downtime());
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}
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int ram_load(QEMUFile *f, void *opaque, int version_id)
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{
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ram_addr_t addr;
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int flags;
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if (version_id != 3) {
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return -EINVAL;
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}
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do {
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addr = qemu_get_be64(f);
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flags = addr & ~TARGET_PAGE_MASK;
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addr &= TARGET_PAGE_MASK;
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if (flags & RAM_SAVE_FLAG_MEM_SIZE) {
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if (addr != last_ram_offset) {
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return -EINVAL;
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}
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}
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if (flags & RAM_SAVE_FLAG_COMPRESS) {
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uint8_t ch = qemu_get_byte(f);
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memset(qemu_get_ram_ptr(addr), ch, TARGET_PAGE_SIZE);
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#ifndef _WIN32
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if (ch == 0 &&
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(!kvm_enabled() || kvm_has_sync_mmu())) {
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madvise(qemu_get_ram_ptr(addr), TARGET_PAGE_SIZE,
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MADV_DONTNEED);
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}
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#endif
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} else if (flags & RAM_SAVE_FLAG_PAGE) {
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qemu_get_buffer(f, qemu_get_ram_ptr(addr), TARGET_PAGE_SIZE);
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}
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if (qemu_file_has_error(f)) {
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return -EIO;
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}
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} while (!(flags & RAM_SAVE_FLAG_EOS));
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return 0;
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}
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void qemu_service_io(void)
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{
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qemu_notify_event();
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}
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#ifdef HAS_AUDIO
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struct soundhw soundhw[] = {
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#ifdef HAS_AUDIO_CHOICE
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#if defined(TARGET_I386) || defined(TARGET_MIPS)
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{
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"pcspk",
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"PC speaker",
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0,
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1,
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{ .init_isa = pcspk_audio_init }
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},
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#endif
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#ifdef CONFIG_SB16
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{
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"sb16",
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"Creative Sound Blaster 16",
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0,
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1,
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{ .init_isa = SB16_init }
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},
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#endif
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#ifdef CONFIG_CS4231A
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{
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"cs4231a",
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"CS4231A",
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0,
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1,
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{ .init_isa = cs4231a_init }
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},
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#endif
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#ifdef CONFIG_ADLIB
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{
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"adlib",
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#ifdef HAS_YMF262
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"Yamaha YMF262 (OPL3)",
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#else
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"Yamaha YM3812 (OPL2)",
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#endif
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0,
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1,
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{ .init_isa = Adlib_init }
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},
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#endif
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#ifdef CONFIG_GUS
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{
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"gus",
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"Gravis Ultrasound GF1",
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0,
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1,
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{ .init_isa = GUS_init }
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},
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#endif
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#ifdef CONFIG_AC97
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{
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"ac97",
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"Intel 82801AA AC97 Audio",
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0,
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0,
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{ .init_pci = ac97_init }
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},
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#endif
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#ifdef CONFIG_ES1370
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{
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"es1370",
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"ENSONIQ AudioPCI ES1370",
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0,
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0,
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{ .init_pci = es1370_init }
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},
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#endif
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#endif /* HAS_AUDIO_CHOICE */
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{ NULL, NULL, 0, 0, { NULL } }
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};
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void select_soundhw(const char *optarg)
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{
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struct soundhw *c;
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if (*optarg == '?') {
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show_valid_cards:
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printf("Valid sound card names (comma separated):\n");
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for (c = soundhw; c->name; ++c) {
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printf ("%-11s %s\n", c->name, c->descr);
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}
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printf("\n-soundhw all will enable all of the above\n");
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exit(*optarg != '?');
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}
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else {
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size_t l;
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const char *p;
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char *e;
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int bad_card = 0;
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if (!strcmp(optarg, "all")) {
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for (c = soundhw; c->name; ++c) {
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c->enabled = 1;
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}
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return;
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}
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p = optarg;
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while (*p) {
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e = strchr(p, ',');
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l = !e ? strlen(p) : (size_t) (e - p);
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for (c = soundhw; c->name; ++c) {
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if (!strncmp(c->name, p, l) && !c->name[l]) {
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c->enabled = 1;
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break;
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}
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}
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if (!c->name) {
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if (l > 80) {
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fprintf(stderr,
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"Unknown sound card name (too big to show)\n");
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}
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else {
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fprintf(stderr, "Unknown sound card name `%.*s'\n",
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(int) l, p);
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}
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bad_card = 1;
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}
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p += l + (e != NULL);
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}
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if (bad_card) {
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goto show_valid_cards;
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}
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}
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}
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#else
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void select_soundhw(const char *optarg)
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{
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}
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#endif
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int qemu_uuid_parse(const char *str, uint8_t *uuid)
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{
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int ret;
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if (strlen(str) != 36) {
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return -1;
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}
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ret = sscanf(str, UUID_FMT, &uuid[0], &uuid[1], &uuid[2], &uuid[3],
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&uuid[4], &uuid[5], &uuid[6], &uuid[7], &uuid[8], &uuid[9],
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&uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14],
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&uuid[15]);
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if (ret != 16) {
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return -1;
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}
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#ifdef TARGET_I386
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smbios_add_field(1, offsetof(struct smbios_type_1, uuid), 16, uuid);
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#endif
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return 0;
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}
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void do_acpitable_option(const char *optarg)
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{
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#ifdef TARGET_I386
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if (acpi_table_add(optarg) < 0) {
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fprintf(stderr, "Wrong acpi table provided\n");
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exit(1);
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}
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#endif
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}
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void do_smbios_option(const char *optarg)
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{
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#ifdef TARGET_I386
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if (smbios_entry_add(optarg) < 0) {
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fprintf(stderr, "Wrong smbios provided\n");
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exit(1);
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}
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#endif
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}
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void cpudef_init(void)
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{
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#if defined(cpudef_setup)
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cpudef_setup(); /* parse cpu definitions in target config file */
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#endif
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}
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int audio_available(void)
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{
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#ifdef HAS_AUDIO
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return 1;
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#else
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return 0;
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#endif
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}
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int kvm_available(void)
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{
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#ifdef CONFIG_KVM
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return 1;
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#else
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return 0;
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#endif
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}
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int xen_available(void)
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{
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#ifdef CONFIG_XEN
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return 1;
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#else
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return 0;
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#endif
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}
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