in acrn/hsm.c [107:413]
static long acrn_dev_ioctl(struct file *filp, unsigned int cmd,
unsigned long ioctl_param)
{
struct acrn_vm *vm = filp->private_data;
struct acrn_vm_creation *vm_param;
struct acrn_vcpu_regs *cpu_regs;
struct acrn_ioreq_notify notify;
struct acrn_ptdev_irq *irq_info;
struct acrn_ioeventfd ioeventfd;
struct acrn_vm_memmap memmap;
struct acrn_mmiodev *mmiodev;
struct acrn_msi_entry *msi;
struct acrn_pcidev *pcidev;
struct acrn_irqfd irqfd;
struct acrn_vdev *vdev;
struct page *page;
u64 cstate_cmd;
int i, ret = 0;
if (vm->vmid == ACRN_INVALID_VMID && cmd != ACRN_IOCTL_CREATE_VM) {
dev_dbg(acrn_dev.this_device,
"ioctl 0x%x: Invalid VM state!\n", cmd);
return -EINVAL;
}
switch (cmd) {
case ACRN_IOCTL_CREATE_VM:
vm_param = memdup_user((void __user *)ioctl_param,
sizeof(struct acrn_vm_creation));
if (IS_ERR(vm_param))
return PTR_ERR(vm_param);
if ((vm_param->reserved0 | vm_param->reserved1) != 0)
return -EINVAL;
vm = acrn_vm_create(vm, vm_param);
if (!vm) {
ret = -EINVAL;
kfree(vm_param);
break;
}
if (copy_to_user((void __user *)ioctl_param, vm_param,
sizeof(struct acrn_vm_creation))) {
acrn_vm_destroy(vm);
ret = -EFAULT;
}
kfree(vm_param);
break;
case ACRN_IOCTL_START_VM:
ret = hcall_start_vm(vm->vmid);
if (ret < 0)
dev_dbg(acrn_dev.this_device,
"Failed to start VM %u!\n", vm->vmid);
break;
case ACRN_IOCTL_PAUSE_VM:
ret = hcall_pause_vm(vm->vmid);
if (ret < 0)
dev_dbg(acrn_dev.this_device,
"Failed to pause VM %u!\n", vm->vmid);
break;
case ACRN_IOCTL_RESET_VM:
ret = hcall_reset_vm(vm->vmid);
if (ret < 0)
dev_dbg(acrn_dev.this_device,
"Failed to restart VM %u!\n", vm->vmid);
break;
case ACRN_IOCTL_DESTROY_VM:
ret = acrn_vm_destroy(vm);
break;
case ACRN_IOCTL_SET_VCPU_REGS:
cpu_regs = memdup_user((void __user *)ioctl_param,
sizeof(struct acrn_vcpu_regs));
if (IS_ERR(cpu_regs))
return PTR_ERR(cpu_regs);
for (i = 0; i < ARRAY_SIZE(cpu_regs->reserved); i++)
if (cpu_regs->reserved[i])
return -EINVAL;
for (i = 0; i < ARRAY_SIZE(cpu_regs->vcpu_regs.reserved_32); i++)
if (cpu_regs->vcpu_regs.reserved_32[i])
return -EINVAL;
for (i = 0; i < ARRAY_SIZE(cpu_regs->vcpu_regs.reserved_64); i++)
if (cpu_regs->vcpu_regs.reserved_64[i])
return -EINVAL;
for (i = 0; i < ARRAY_SIZE(cpu_regs->vcpu_regs.gdt.reserved); i++)
if (cpu_regs->vcpu_regs.gdt.reserved[i] |
cpu_regs->vcpu_regs.idt.reserved[i])
return -EINVAL;
ret = hcall_set_vcpu_regs(vm->vmid, virt_to_phys(cpu_regs));
if (ret < 0)
dev_dbg(acrn_dev.this_device,
"Failed to set regs state of VM%u!\n",
vm->vmid);
kfree(cpu_regs);
break;
case ACRN_IOCTL_SET_MEMSEG:
if (copy_from_user(&memmap, (void __user *)ioctl_param,
sizeof(memmap)))
return -EFAULT;
ret = acrn_vm_memseg_map(vm, &memmap);
break;
case ACRN_IOCTL_UNSET_MEMSEG:
if (copy_from_user(&memmap, (void __user *)ioctl_param,
sizeof(memmap)))
return -EFAULT;
ret = acrn_vm_memseg_unmap(vm, &memmap);
break;
case ACRN_IOCTL_ASSIGN_MMIODEV:
mmiodev = memdup_user((void __user *)ioctl_param,
sizeof(struct acrn_mmiodev));
if (IS_ERR(mmiodev))
return PTR_ERR(mmiodev);
ret = hcall_assign_mmiodev(vm->vmid, virt_to_phys(mmiodev));
if (ret < 0)
dev_dbg(acrn_dev.this_device,
"Failed to assign MMIO device!\n");
kfree(mmiodev);
break;
case ACRN_IOCTL_DEASSIGN_MMIODEV:
mmiodev = memdup_user((void __user *)ioctl_param,
sizeof(struct acrn_mmiodev));
if (IS_ERR(mmiodev))
return PTR_ERR(mmiodev);
ret = hcall_deassign_mmiodev(vm->vmid, virt_to_phys(mmiodev));
if (ret < 0)
dev_dbg(acrn_dev.this_device,
"Failed to deassign MMIO device!\n");
kfree(mmiodev);
break;
case ACRN_IOCTL_ASSIGN_PCIDEV:
pcidev = memdup_user((void __user *)ioctl_param,
sizeof(struct acrn_pcidev));
if (IS_ERR(pcidev))
return PTR_ERR(pcidev);
ret = hcall_assign_pcidev(vm->vmid, virt_to_phys(pcidev));
if (ret < 0)
dev_dbg(acrn_dev.this_device,
"Failed to assign pci device!\n");
kfree(pcidev);
break;
case ACRN_IOCTL_DEASSIGN_PCIDEV:
pcidev = memdup_user((void __user *)ioctl_param,
sizeof(struct acrn_pcidev));
if (IS_ERR(pcidev))
return PTR_ERR(pcidev);
ret = hcall_deassign_pcidev(vm->vmid, virt_to_phys(pcidev));
if (ret < 0)
dev_dbg(acrn_dev.this_device,
"Failed to deassign pci device!\n");
kfree(pcidev);
break;
case ACRN_IOCTL_CREATE_VDEV:
vdev = memdup_user((void __user *)ioctl_param,
sizeof(struct acrn_vdev));
if (IS_ERR(vdev))
return PTR_ERR(vdev);
ret = hcall_create_vdev(vm->vmid, virt_to_phys(vdev));
if (ret < 0)
dev_dbg(acrn_dev.this_device,
"Failed to create virtual device!\n");
kfree(vdev);
break;
case ACRN_IOCTL_DESTROY_VDEV:
vdev = memdup_user((void __user *)ioctl_param,
sizeof(struct acrn_vdev));
if (IS_ERR(vdev))
return PTR_ERR(vdev);
ret = hcall_destroy_vdev(vm->vmid, virt_to_phys(vdev));
if (ret < 0)
dev_dbg(acrn_dev.this_device,
"Failed to destroy virtual device!\n");
kfree(vdev);
break;
case ACRN_IOCTL_SET_PTDEV_INTR:
irq_info = memdup_user((void __user *)ioctl_param,
sizeof(struct acrn_ptdev_irq));
if (IS_ERR(irq_info))
return PTR_ERR(irq_info);
ret = hcall_set_ptdev_intr(vm->vmid, virt_to_phys(irq_info));
if (ret < 0)
dev_dbg(acrn_dev.this_device,
"Failed to configure intr for ptdev!\n");
kfree(irq_info);
break;
case ACRN_IOCTL_RESET_PTDEV_INTR:
irq_info = memdup_user((void __user *)ioctl_param,
sizeof(struct acrn_ptdev_irq));
if (IS_ERR(irq_info))
return PTR_ERR(irq_info);
ret = hcall_reset_ptdev_intr(vm->vmid, virt_to_phys(irq_info));
if (ret < 0)
dev_dbg(acrn_dev.this_device,
"Failed to reset intr for ptdev!\n");
kfree(irq_info);
break;
case ACRN_IOCTL_SET_IRQLINE:
ret = hcall_set_irqline(vm->vmid, ioctl_param);
if (ret < 0)
dev_dbg(acrn_dev.this_device,
"Failed to set interrupt line!\n");
break;
case ACRN_IOCTL_INJECT_MSI:
msi = memdup_user((void __user *)ioctl_param,
sizeof(struct acrn_msi_entry));
if (IS_ERR(msi))
return PTR_ERR(msi);
ret = hcall_inject_msi(vm->vmid, virt_to_phys(msi));
if (ret < 0)
dev_dbg(acrn_dev.this_device,
"Failed to inject MSI!\n");
kfree(msi);
break;
case ACRN_IOCTL_VM_INTR_MONITOR:
ret = pin_user_pages_fast(ioctl_param, 1,
FOLL_WRITE | FOLL_LONGTERM, &page);
if (unlikely(ret != 1)) {
dev_dbg(acrn_dev.this_device,
"Failed to pin intr hdr buffer!\n");
return -EFAULT;
}
ret = hcall_vm_intr_monitor(vm->vmid, page_to_phys(page));
if (ret < 0) {
unpin_user_page(page);
dev_dbg(acrn_dev.this_device,
"Failed to monitor intr data!\n");
return ret;
}
if (vm->monitor_page)
unpin_user_page(vm->monitor_page);
vm->monitor_page = page;
break;
case ACRN_IOCTL_CREATE_IOREQ_CLIENT:
if (vm->default_client)
return -EEXIST;
if (!acrn_ioreq_client_create(vm, NULL, NULL, true, "acrndm"))
ret = -EINVAL;
break;
case ACRN_IOCTL_DESTROY_IOREQ_CLIENT:
if (vm->default_client)
acrn_ioreq_client_destroy(vm->default_client);
break;
case ACRN_IOCTL_ATTACH_IOREQ_CLIENT:
if (vm->default_client)
ret = acrn_ioreq_client_wait(vm->default_client);
else
ret = -ENODEV;
break;
case ACRN_IOCTL_NOTIFY_REQUEST_FINISH:
if (copy_from_user(¬ify, (void __user *)ioctl_param,
sizeof(struct acrn_ioreq_notify)))
return -EFAULT;
if (notify.reserved != 0)
return -EINVAL;
ret = acrn_ioreq_request_default_complete(vm, notify.vcpu);
break;
case ACRN_IOCTL_CLEAR_VM_IOREQ:
acrn_ioreq_request_clear(vm);
break;
case ACRN_IOCTL_PM_GET_CPU_STATE:
if (copy_from_user(&cstate_cmd, (void __user *)ioctl_param,
sizeof(cstate_cmd)))
return -EFAULT;
ret = pmcmd_ioctl(cstate_cmd, (void __user *)ioctl_param);
break;
case ACRN_IOCTL_IOEVENTFD:
if (copy_from_user(&ioeventfd, (void __user *)ioctl_param,
sizeof(ioeventfd)))
return -EFAULT;
if (ioeventfd.reserved != 0)
return -EINVAL;
ret = acrn_ioeventfd_config(vm, &ioeventfd);
break;
case ACRN_IOCTL_IRQFD:
if (copy_from_user(&irqfd, (void __user *)ioctl_param,
sizeof(irqfd)))
return -EFAULT;
ret = acrn_irqfd_config(vm, &irqfd);
break;
default:
dev_dbg(acrn_dev.this_device, "Unknown IOCTL 0x%x!\n", cmd);
ret = -ENOTTY;
}
return ret;
}