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HV: pci-vuart support create vdev hcall

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Add cteate method for vmcs9900 vdev in hypercalls.

The destroy method of ivshmem is also suitable for other emulated vdev,
move it into hcall_destroy_vdev() for all emulated vdevs

Tracked-On: #5394
Signed-off-by: Tao Yuhong <yuhong.tao@intel.com>
Reviewed-by: Wang, Yu1 <yu1.wang@intel.com>
This commit is contained in:
Tao Yuhong
2020-10-23 17:43:45 -04:00
committed by wenlingz
parent a371815462
commit 996e8f680c
6 changed files with 76 additions and 27 deletions
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33
hypervisor/common/hypercall.c
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@@ -21,19 +21,21 @@
#include <ioapic.h>
#include <mmio_dev.h>
#include <ivshmem.h>
#include <vmcs9900.h>
#define DBG_LEVEL_HYCALL 6U
typedef int32_t (*emul_dev_op) (struct acrn_vm *vm, struct acrn_emul_dev *dev);
typedef int32_t (*emul_dev_create) (struct acrn_vm *vm, struct acrn_emul_dev *dev);
typedef int32_t (*emul_dev_destroy) (struct pci_vdev *vdev);
struct emul_dev_ops {
/*
* The low 32 bits represent the vendor id and device id of PCI device,
* and the high 32 bits represent the device number of the legacy device
*/
uint64_t dev_id;
emul_dev_op create;
emul_dev_op destroy;
/* TODO: to re-use vdev_init/vdev_deinit directly in hypercall */
emul_dev_create create;
emul_dev_destroy destroy;
};
static struct emul_dev_ops emul_dev_ops_tbl[] = {
@@ -42,6 +44,7 @@ static struct emul_dev_ops emul_dev_ops_tbl[] = {
#else
{(IVSHMEM_VENDOR_ID | (IVSHMEM_DEVICE_ID << 16U)), NULL, NULL},
#endif
{(MCS9900_VENDOR | (MCS9900_DEV << 16U)), create_vmcs9900_vdev, destroy_vmcs9900_vdev},
};
bool is_hypercall_from_ring0(void)
@@ -1216,16 +1219,30 @@ int32_t hcall_destroy_vdev(struct acrn_vm *vm, struct acrn_vm *target_vm, __unus
{
int32_t ret = -EINVAL;
struct acrn_emul_dev dev;
struct pci_vdev *vdev;
struct emul_dev_ops *op;
union pci_bdf bdf;
/* We should only destroy a device to a post-launched VM at creating or pausing time for safety, not runtime or other cases*/
if (is_created_vm(target_vm) || is_paused_vm(target_vm)) {
if (copy_from_gpa(vm, &dev, param2, sizeof(dev)) == 0) {
op = find_emul_dev_ops(&dev);
if ((op != NULL) && (op->destroy != NULL)) {
ret = op->destroy(target_vm, &dev);
op = find_emul_dev_ops(&dev);
if (op != NULL) {
bdf.value = (uint16_t) dev.slot;
vdev = pci_find_vdev(&vm->vpci, bdf);
if (vdev != NULL) {
vdev->pci_dev_config->vbdf.value = UNASSIGNED_VBDF;
if (op->destroy != NULL) {
ret = op->destroy(vdev);
} else {
ret = 0;
}
} else {
pr_warn("%s, failed to destroy emulated device %x:%x.%x\n",
__func__, bdf.bits.b, bdf.bits.d, bdf.bits.f);
}
}
}
}
} else {
pr_err("%s, vm[%d] is not a postlaunched VM, or not in CREATED/PAUSED status to destroy a vdev\n", __func__, target_vm->vm_id);
}