Add missing files to KVM commit.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5629 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/kvm-all.c b/kvm-all.c
new file mode 100644
index 0000000..c3a46e2
--- /dev/null
+++ b/kvm-all.c
@@ -0,0 +1,374 @@
+/*
+ * QEMU KVM support
+ *
+ * Copyright IBM, Corp. 2008
+ *
+ * Authors:
+ * Anthony Liguori <aliguori@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+
+#include <linux/kvm.h>
+
+#include "qemu-common.h"
+#include "sysemu.h"
+#include "kvm.h"
+
+//#define DEBUG_KVM
+
+#ifdef DEBUG_KVM
+#define dprintf(fmt, ...) \
+ do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
+#else
+#define dprintf(fmt, ...) \
+ do { } while (0)
+#endif
+
+typedef struct kvm_userspace_memory_region KVMSlot;
+
+int kvm_allowed = 0;
+
+struct KVMState
+{
+ KVMSlot slots[32];
+ int fd;
+ int vmfd;
+};
+
+static KVMState *kvm_state;
+
+static KVMSlot *kvm_alloc_slot(KVMState *s)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
+ if (s->slots[i].memory_size == 0)
+ return &s->slots[i];
+ }
+
+ return NULL;
+}
+
+static KVMSlot *kvm_lookup_slot(KVMState *s, target_phys_addr_t start_addr)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(s->slots); i++) {
+ KVMSlot *mem = &s->slots[i];
+
+ if (start_addr >= mem->guest_phys_addr &&
+ start_addr < (mem->guest_phys_addr + mem->memory_size))
+ return mem;
+ }
+
+ return NULL;
+}
+
+int kvm_init_vcpu(CPUState *env)
+{
+ KVMState *s = kvm_state;
+ long mmap_size;
+ int ret;
+
+ dprintf("kvm_init_vcpu\n");
+
+ ret = kvm_vm_ioctl(s, KVM_CREATE_VCPU,
+ (void *)(unsigned long)env->cpu_index);
+ if (ret < 0) {
+ dprintf("kvm_create_vcpu failed\n");
+ goto err;
+ }
+
+ env->kvm_fd = ret;
+ env->kvm_state = s;
+
+ mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
+ if (mmap_size < 0) {
+ dprintf("KVM_GET_VCPU_MMAP_SIZE failed\n");
+ goto err;
+ }
+
+ env->kvm_run = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_SHARED,
+ env->kvm_fd, 0);
+ if (env->kvm_run == MAP_FAILED) {
+ ret = -errno;
+ dprintf("mmap'ing vcpu state failed\n");
+ goto err;
+ }
+
+ ret = kvm_arch_init_vcpu(env);
+
+err:
+ return ret;
+}
+
+int kvm_init(int smp_cpus)
+{
+ KVMState *s;
+ int ret;
+ int i;
+
+ if (smp_cpus > 1)
+ return -EINVAL;
+
+ s = qemu_mallocz(sizeof(KVMState));
+ if (s == NULL)
+ return -ENOMEM;
+
+ for (i = 0; i < ARRAY_SIZE(s->slots); i++)
+ s->slots[i].slot = i;
+
+ s->vmfd = -1;
+ s->fd = open("/dev/kvm", O_RDWR);
+ if (s->fd == -1) {
+ fprintf(stderr, "Could not access KVM kernel module: %m\n");
+ ret = -errno;
+ goto err;
+ }
+
+ ret = kvm_ioctl(s, KVM_GET_API_VERSION, 0);
+ if (ret < KVM_API_VERSION) {
+ if (ret > 0)
+ ret = -EINVAL;
+ fprintf(stderr, "kvm version too old\n");
+ goto err;
+ }
+
+ if (ret > KVM_API_VERSION) {
+ ret = -EINVAL;
+ fprintf(stderr, "kvm version not supported\n");
+ goto err;
+ }
+
+ s->vmfd = kvm_ioctl(s, KVM_CREATE_VM, 0);
+ if (s->vmfd < 0)
+ goto err;
+
+ /* initially, KVM allocated its own memory and we had to jump through
+ * hooks to make phys_ram_base point to this. Modern versions of KVM
+ * just use a user allocated buffer so we can use phys_ram_base
+ * unmodified. Make sure we have a sufficiently modern version of KVM.
+ */
+ ret = kvm_ioctl(s, KVM_CHECK_EXTENSION, (void *)KVM_CAP_USER_MEMORY);
+ if (ret <= 0) {
+ if (ret == 0)
+ ret = -EINVAL;
+ fprintf(stderr, "kvm does not support KVM_CAP_USER_MEMORY\n");
+ goto err;
+ }
+
+ ret = kvm_arch_init(s, smp_cpus);
+ if (ret < 0)
+ goto err;
+
+ kvm_state = s;
+
+ return 0;
+
+err:
+ if (s) {
+ if (s->vmfd != -1)
+ close(s->vmfd);
+ if (s->fd != -1)
+ close(s->fd);
+ }
+ qemu_free(s);
+
+ return ret;
+}
+
+static int kvm_handle_io(CPUState *env, uint16_t port, void *data,
+ int direction, int size, uint32_t count)
+{
+ int i;
+ uint8_t *ptr = data;
+
+ for (i = 0; i < count; i++) {
+ if (direction == KVM_EXIT_IO_IN) {
+ switch (size) {
+ case 1:
+ stb_p(ptr, cpu_inb(env, port));
+ break;
+ case 2:
+ stw_p(ptr, cpu_inw(env, port));
+ break;
+ case 4:
+ stl_p(ptr, cpu_inl(env, port));
+ break;
+ }
+ } else {
+ switch (size) {
+ case 1:
+ cpu_outb(env, port, ldub_p(ptr));
+ break;
+ case 2:
+ cpu_outw(env, port, lduw_p(ptr));
+ break;
+ case 4:
+ cpu_outl(env, port, ldl_p(ptr));
+ break;
+ }
+ }
+
+ ptr += size;
+ }
+
+ return 1;
+}
+
+int kvm_cpu_exec(CPUState *env)
+{
+ struct kvm_run *run = env->kvm_run;
+ int ret;
+
+ dprintf("kvm_cpu_exec()\n");
+
+ do {
+ kvm_arch_pre_run(env, run);
+
+ if ((env->interrupt_request & CPU_INTERRUPT_EXIT)) {
+ dprintf("interrupt exit requested\n");
+ ret = 0;
+ break;
+ }
+
+ ret = kvm_vcpu_ioctl(env, KVM_RUN, 0);
+ kvm_arch_post_run(env, run);
+
+ if (ret == -EINTR || ret == -EAGAIN) {
+ dprintf("io window exit\n");
+ ret = 0;
+ break;
+ }
+
+ if (ret < 0) {
+ dprintf("kvm run failed %s\n", strerror(-ret));
+ abort();
+ }
+
+ ret = 0; /* exit loop */
+ switch (run->exit_reason) {
+ case KVM_EXIT_IO:
+ dprintf("handle_io\n");
+ ret = kvm_handle_io(env, run->io.port,
+ (uint8_t *)run + run->io.data_offset,
+ run->io.direction,
+ run->io.size,
+ run->io.count);
+ break;
+ case KVM_EXIT_MMIO:
+ dprintf("handle_mmio\n");
+ cpu_physical_memory_rw(run->mmio.phys_addr,
+ run->mmio.data,
+ run->mmio.len,
+ run->mmio.is_write);
+ ret = 1;
+ break;
+ case KVM_EXIT_IRQ_WINDOW_OPEN:
+ dprintf("irq_window_open\n");
+ break;
+ case KVM_EXIT_SHUTDOWN:
+ dprintf("shutdown\n");
+ qemu_system_reset_request();
+ ret = 1;
+ break;
+ case KVM_EXIT_UNKNOWN:
+ dprintf("kvm_exit_unknown\n");
+ break;
+ case KVM_EXIT_FAIL_ENTRY:
+ dprintf("kvm_exit_fail_entry\n");
+ break;
+ case KVM_EXIT_EXCEPTION:
+ dprintf("kvm_exit_exception\n");
+ break;
+ case KVM_EXIT_DEBUG:
+ dprintf("kvm_exit_debug\n");
+ break;
+ default:
+ dprintf("kvm_arch_handle_exit\n");
+ ret = kvm_arch_handle_exit(env, run);
+ break;
+ }
+ } while (ret > 0);
+
+ return ret;
+}
+
+void kvm_set_phys_mem(target_phys_addr_t start_addr,
+ ram_addr_t size,
+ ram_addr_t phys_offset)
+{
+ KVMState *s = kvm_state;
+ ram_addr_t flags = phys_offset & ~TARGET_PAGE_MASK;
+ KVMSlot *mem;
+
+ /* KVM does not support read-only slots */
+ phys_offset &= ~IO_MEM_ROM;
+
+ mem = kvm_lookup_slot(s, start_addr);
+ if (mem) {
+ if (flags == IO_MEM_UNASSIGNED) {
+ mem->memory_size = 0;
+ mem->guest_phys_addr = start_addr;
+ mem->userspace_addr = 0;
+ mem->flags = 0;
+
+ kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, mem);
+ } else if (start_addr >= mem->guest_phys_addr &&
+ (start_addr + size) <= (mem->guest_phys_addr + mem->memory_size))
+ return;
+ }
+
+ /* KVM does not need to know about this memory */
+ if (flags >= IO_MEM_UNASSIGNED)
+ return;
+
+ mem = kvm_alloc_slot(s);
+ mem->memory_size = size;
+ mem->guest_phys_addr = start_addr;
+ mem->userspace_addr = (unsigned long)(phys_ram_base + phys_offset);
+ mem->flags = 0;
+
+ kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, mem);
+ /* FIXME deal with errors */
+}
+
+int kvm_ioctl(KVMState *s, int type, void *data)
+{
+ int ret;
+
+ ret = ioctl(s->fd, type, data);
+ if (ret == -1)
+ ret = -errno;
+
+ return ret;
+}
+
+int kvm_vm_ioctl(KVMState *s, int type, void *data)
+{
+ int ret;
+
+ ret = ioctl(s->vmfd, type, data);
+ if (ret == -1)
+ ret = -errno;
+
+ return ret;
+}
+
+int kvm_vcpu_ioctl(CPUState *env, int type, void *data)
+{
+ int ret;
+
+ ret = ioctl(env->kvm_fd, type, data);
+ if (ret == -1)
+ ret = -errno;
+
+ return ret;
+}