#define PAGE_SIZE 4096
-#define BALLOON_START_HCALL 0xba00 // size in rax
-#define BALLOON_QUERY_HCALL 0xba01 // req_pgs in rcx, alloc_pgs in rdx
struct balloon_config {
uint32_t requested_pages;
}
-static int handle_kick(struct vm_device * dev) {
+static int handle_kick(struct guest_info * core, struct vm_device * dev) {
struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)dev->private_data;
struct virtio_queue * q = virtio->cur_queue;
addr_t page_addr;
tmp_desc = &(q->desc[desc_idx]);
- PrintDebug("Header Descriptor (ptr=%p) gpa=%p, len=%d, flags=%x, next=%d\n", tmp_desc,
- (void *)(tmp_desc->addr_gpa), tmp_desc->length,
+ PrintDebug("Header Descriptor (ptr=%p) gpa=%p, len=%d, flags=%x, next=%d\n",
+ tmp_desc,
+ (void *)(addr_t)(tmp_desc->addr_gpa), tmp_desc->length,
tmp_desc->flags, tmp_desc->next);
- if (guest_pa_to_host_va(dev->vm, tmp_desc->addr_gpa, (addr_t *)&(page_addr)) == -1) {
+ if (v3_gpa_to_hva(core, tmp_desc->addr_gpa, (addr_t *)&(page_addr)) == -1) {
PrintError("Could not translate block header address\n");
return -1;
}
return 0;
}
-static int virtio_io_write(uint16_t port, void * src, uint_t length, void * private_data) {
+static int virtio_io_write(struct guest_info * core, uint16_t port, void * src, uint_t length, void * private_data) {
struct vm_device * dev = (struct vm_device *)private_data;
struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)dev->private_data;
int port_idx = port % virtio->io_range_size;
// round up to next page boundary.
virtio->cur_queue->ring_used_addr = (virtio->cur_queue->ring_used_addr + 0xfff) & ~0xfff;
- if (guest_pa_to_host_va(dev->vm, virtio->cur_queue->ring_desc_addr, (addr_t *)&(virtio->cur_queue->desc)) == -1) {
+ if (v3_gpa_to_hva(core, virtio->cur_queue->ring_desc_addr, (addr_t *)&(virtio->cur_queue->desc)) == -1) {
PrintError("Could not translate ring descriptor address\n");
return -1;
}
- if (guest_pa_to_host_va(dev->vm, virtio->cur_queue->ring_avail_addr, (addr_t *)&(virtio->cur_queue->avail)) == -1) {
+ if (v3_gpa_to_hva(core, virtio->cur_queue->ring_avail_addr, (addr_t *)&(virtio->cur_queue->avail)) == -1) {
PrintError("Could not translate ring available address\n");
return -1;
}
- if (guest_pa_to_host_va(dev->vm, virtio->cur_queue->ring_used_addr, (addr_t *)&(virtio->cur_queue->used)) == -1) {
+ if (v3_gpa_to_hva(core, virtio->cur_queue->ring_used_addr, (addr_t *)&(virtio->cur_queue->used)) == -1) {
PrintError("Could not translate ring used address\n");
return -1;
}
break;
case VRING_Q_NOTIFY_PORT:
PrintDebug("Handling Kick\n");
- if (handle_kick(dev) == -1) {
+ if (handle_kick(core, dev) == -1) {
PrintError("Could not handle Balloon Notification\n");
return -1;
}
}
-static int virtio_io_read(uint16_t port, void * dst, uint_t length, void * private_data) {
+static int virtio_io_read(struct guest_info * core, uint16_t port, void * dst, uint_t length, void * private_data) {
struct vm_device * dev = (struct vm_device *)private_data;
struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)dev->private_data;
int port_idx = port % virtio->io_range_size;
-static int virtio_init(struct guest_info * vm, void * cfg_data) {
- struct vm_device * pci_bus = v3_find_dev(vm, (char *)cfg_data);
+static int virtio_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
+ struct vm_device * pci_bus = v3_find_dev(vm, v3_cfg_val(cfg, "bus"));
struct virtio_balloon_state * virtio_state = NULL;
struct pci_device * pci_dev = NULL;
+ char * dev_id = v3_cfg_val(cfg, "ID");
PrintDebug("Initializing VIRTIO Balloon device\n");
memset(virtio_state, 0, sizeof(struct virtio_balloon_state));
- struct vm_device * dev = v3_allocate_device("LNX_VIRTIO_BALLOON", &dev_ops, virtio_state);
+ struct vm_device * dev = v3_allocate_device(dev_id, &dev_ops, virtio_state);
if (v3_attach_device(vm, dev) == -1) {
- PrintError("Could not attach device %s\n", "LNX_VIRTIO_BALLOON");
+ PrintError("Could not attach device %s\n", dev_id);
return -1;
}