diff options
Diffstat (limited to 'target/i386/hax/hax-posix.c')
| -rw-r--r-- | target/i386/hax/hax-posix.c | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/target/i386/hax/hax-posix.c b/target/i386/hax/hax-posix.c new file mode 100644 index 0000000000..735a749d4b --- /dev/null +++ b/target/i386/hax/hax-posix.c @@ -0,0 +1,305 @@ +/* + * QEMU HAXM support + * + * Copyright (c) 2011 Intel Corporation + * Written by: + * Jiang Yunhong<yunhong.jiang@intel.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. + * + */ + +/* HAX module interface - darwin version */ +#include "qemu/osdep.h" +#include <sys/ioctl.h> + +#include "sysemu/cpus.h" +#include "hax-cpus.h" + +hax_fd hax_mod_open(void) +{ + int fd = open("/dev/HAX", O_RDWR); + if (fd == -1) { + fprintf(stderr, "Failed to open the hax module\n"); + } + + qemu_set_cloexec(fd); + + return fd; +} + +int hax_populate_ram(uint64_t va, uint64_t size) +{ + int ret; + + if (!hax_global.vm || !hax_global.vm->fd) { + fprintf(stderr, "Allocate memory before vm create?\n"); + return -EINVAL; + } + + if (hax_global.supports_64bit_ramblock) { + struct hax_ramblock_info ramblock = { + .start_va = va, + .size = size, + .reserved = 0 + }; + + ret = ioctl(hax_global.vm->fd, HAX_VM_IOCTL_ADD_RAMBLOCK, &ramblock); + } else { + struct hax_alloc_ram_info info = { + .size = (uint32_t)size, + .pad = 0, + .va = va + }; + + ret = ioctl(hax_global.vm->fd, HAX_VM_IOCTL_ALLOC_RAM, &info); + } + if (ret < 0) { + fprintf(stderr, "Failed to register RAM block: ret=%d, va=0x%" PRIx64 + ", size=0x%" PRIx64 ", method=%s\n", ret, va, size, + hax_global.supports_64bit_ramblock ? "new" : "legacy"); + return ret; + } + return 0; +} + +int hax_set_ram(uint64_t start_pa, uint32_t size, uint64_t host_va, int flags) +{ + struct hax_set_ram_info info; + int ret; + + info.pa_start = start_pa; + info.size = size; + info.va = host_va; + info.flags = (uint8_t) flags; + + ret = ioctl(hax_global.vm->fd, HAX_VM_IOCTL_SET_RAM, &info); + if (ret < 0) { + return -errno; + } + return 0; +} + +int hax_capability(struct hax_state *hax, struct hax_capabilityinfo *cap) +{ + int ret; + + ret = ioctl(hax->fd, HAX_IOCTL_CAPABILITY, cap); + if (ret == -1) { + fprintf(stderr, "Failed to get HAX capability\n"); + return -errno; + } + + return 0; +} + +int hax_mod_version(struct hax_state *hax, struct hax_module_version *version) +{ + int ret; + + ret = ioctl(hax->fd, HAX_IOCTL_VERSION, version); + if (ret == -1) { + fprintf(stderr, "Failed to get HAX version\n"); + return -errno; + } + + return 0; +} + +static char *hax_vm_devfs_string(int vm_id) +{ + return g_strdup_printf("/dev/hax_vm/vm%02d", vm_id); +} + +static char *hax_vcpu_devfs_string(int vm_id, int vcpu_id) +{ + return g_strdup_printf("/dev/hax_vm%02d/vcpu%02d", vm_id, vcpu_id); +} + +int hax_host_create_vm(struct hax_state *hax, int *vmid) +{ + int ret; + int vm_id = 0; + + if (hax_invalid_fd(hax->fd)) { + return -EINVAL; + } + + if (hax->vm) { + return 0; + } + + ret = ioctl(hax->fd, HAX_IOCTL_CREATE_VM, &vm_id); + *vmid = vm_id; + return ret; +} + +hax_fd hax_host_open_vm(struct hax_state *hax, int vm_id) +{ + hax_fd fd; + char *vm_name = NULL; + + vm_name = hax_vm_devfs_string(vm_id); + if (!vm_name) { + return -1; + } + + fd = open(vm_name, O_RDWR); + g_free(vm_name); + + qemu_set_cloexec(fd); + + return fd; +} + +int hax_notify_qemu_version(hax_fd vm_fd, struct hax_qemu_version *qversion) +{ + int ret; + + if (hax_invalid_fd(vm_fd)) { + return -EINVAL; + } + + ret = ioctl(vm_fd, HAX_VM_IOCTL_NOTIFY_QEMU_VERSION, qversion); + + if (ret < 0) { + fprintf(stderr, "Failed to notify qemu API version\n"); + return ret; + } + return 0; +} + +/* Simply assume the size should be bigger than the hax_tunnel, + * since the hax_tunnel can be extended later with compatibility considered + */ +int hax_host_create_vcpu(hax_fd vm_fd, int vcpuid) +{ + int ret; + + ret = ioctl(vm_fd, HAX_VM_IOCTL_VCPU_CREATE, &vcpuid); + if (ret < 0) { + fprintf(stderr, "Failed to create vcpu %x\n", vcpuid); + } + + return ret; +} + +hax_fd hax_host_open_vcpu(int vmid, int vcpuid) +{ + char *devfs_path = NULL; + hax_fd fd; + + devfs_path = hax_vcpu_devfs_string(vmid, vcpuid); + if (!devfs_path) { + fprintf(stderr, "Failed to get the devfs\n"); + return -EINVAL; + } + + fd = open(devfs_path, O_RDWR); + g_free(devfs_path); + if (fd < 0) { + fprintf(stderr, "Failed to open the vcpu devfs\n"); + } + qemu_set_cloexec(fd); + return fd; +} + +int hax_host_setup_vcpu_channel(struct hax_vcpu_state *vcpu) +{ + int ret; + struct hax_tunnel_info info; + + ret = ioctl(vcpu->fd, HAX_VCPU_IOCTL_SETUP_TUNNEL, &info); + if (ret) { + fprintf(stderr, "Failed to setup the hax tunnel\n"); + return ret; + } + + if (!valid_hax_tunnel_size(info.size)) { + fprintf(stderr, "Invalid hax tunnel size %x\n", info.size); + ret = -EINVAL; + return ret; + } + + vcpu->tunnel = (struct hax_tunnel *) (intptr_t) (info.va); + vcpu->iobuf = (unsigned char *) (intptr_t) (info.io_va); + return 0; +} + +int hax_vcpu_run(struct hax_vcpu_state *vcpu) +{ + return ioctl(vcpu->fd, HAX_VCPU_IOCTL_RUN, NULL); +} + +int hax_sync_fpu(CPUArchState *env, struct fx_layout *fl, int set) +{ + int ret, fd; + + fd = hax_vcpu_get_fd(env); + if (fd <= 0) { + return -1; + } + + if (set) { + ret = ioctl(fd, HAX_VCPU_IOCTL_SET_FPU, fl); + } else { + ret = ioctl(fd, HAX_VCPU_IOCTL_GET_FPU, fl); + } + return ret; +} + +int hax_sync_msr(CPUArchState *env, struct hax_msr_data *msrs, int set) +{ + int ret, fd; + + fd = hax_vcpu_get_fd(env); + if (fd <= 0) { + return -1; + } + if (set) { + ret = ioctl(fd, HAX_VCPU_IOCTL_SET_MSRS, msrs); + } else { + ret = ioctl(fd, HAX_VCPU_IOCTL_GET_MSRS, msrs); + } + return ret; +} + +int hax_sync_vcpu_state(CPUArchState *env, struct vcpu_state_t *state, int set) +{ + int ret, fd; + + fd = hax_vcpu_get_fd(env); + if (fd <= 0) { + return -1; + } + + if (set) { + ret = ioctl(fd, HAX_VCPU_SET_REGS, state); + } else { + ret = ioctl(fd, HAX_VCPU_GET_REGS, state); + } + return ret; +} + +int hax_inject_interrupt(CPUArchState *env, int vector) +{ + int fd; + + fd = hax_vcpu_get_fd(env); + if (fd <= 0) { + return -1; + } + + return ioctl(fd, HAX_VCPU_IOCTL_INTERRUPT, &vector); +} + +void hax_kick_vcpu_thread(CPUState *cpu) +{ + /* + * FIXME: race condition with the exit_request check in + * hax_vcpu_hax_exec + */ + cpu->exit_request = 1; + cpus_kick_thread(cpu); +} |