X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fdevices%2Flnx_virtio_balloon.c;h=e936f9e8be95205d1fd1b93e9ed87f98e1449d09;hb=8a3dbb70c29175bad79764a0b2f3961b98138bb2;hp=c5b621e635316e57f8cafd7506d7aa6b5496036d;hpb=e4bc6022970d0f8252e1f2ac512f7d977b40e51b;p=palacios.git

diff --git a/palacios/src/devices/lnx_virtio_balloon.c b/palacios/src/devices/lnx_virtio_balloon.c
index c5b621e..e936f9e 100644
--- a/palacios/src/devices/lnx_virtio_balloon.c
+++ b/palacios/src/devices/lnx_virtio_balloon.c
@@ -31,8 +31,6 @@
 
 #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;
@@ -79,12 +77,9 @@ struct virtio_balloon_state {
 };
 
 
-static int virtio_free(struct vm_device * dev) {
-    return -1;
-}
 
-static int virtio_reset(struct vm_device * dev) {
-    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)dev->private_data;
+
+static int virtio_reset(struct virtio_balloon_state * virtio) {
 
     memset(virtio->queue, 0, sizeof(struct virtio_queue) * 2);
 
@@ -121,8 +116,7 @@ static int get_desc_count(struct virtio_queue * q, int index) {
 }
 
 
-static int handle_kick(struct guest_info * core, struct vm_device * dev) {
-    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)dev->private_data;    
+static int handle_kick(struct guest_info * core, struct virtio_balloon_state * virtio) {
     struct virtio_queue * q = virtio->cur_queue;
 
     PrintDebug("VIRTIO BALLOON KICK: cur_index=%d (mod=%d), avail_index=%d\n", 
@@ -148,13 +142,13 @@ static int handle_kick(struct guest_info * core, struct vm_device * dev) {
 		       tmp_desc->flags, tmp_desc->next);
 	
 
-	    if (guest_pa_to_host_va(core, 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;
 	    }
 
 	    /* 	    
-	       if (handle_balloon_op(dev, tmp_desc, buf_desc, status_desc) == -1) {
+	       if (handle_balloon_op(virtio, tmp_desc, buf_desc, status_desc) == -1) {
 	       PrintError("Error handling balloon operation\n");
 	       return -1;
 	       }
@@ -186,8 +180,7 @@ static int handle_kick(struct guest_info * core, struct vm_device * dev) {
 }
 
 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;
+    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)private_data;
     int port_idx = port % virtio->io_range_size;
 
 
@@ -223,19 +216,19 @@ static int virtio_io_write(struct guest_info * core, uint16_t port, void * src,
 		// 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(core, 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(core, 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(core, 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;
 		}
@@ -267,7 +260,7 @@ static int virtio_io_write(struct guest_info * core, uint16_t port, void * src,
 	    break;
 	case VRING_Q_NOTIFY_PORT:
 	    PrintDebug("Handling Kick\n");
-	    if (handle_kick(core, dev) == -1) {
+	    if (handle_kick(core, virtio) == -1) {
 		PrintError("Could not handle Balloon Notification\n");
 		return -1;
 	    }
@@ -277,7 +270,7 @@ static int virtio_io_write(struct guest_info * core, uint16_t port, void * src,
 
 	    if (virtio->virtio_cfg.status == 0) {
 		PrintDebug("Resetting device\n");
-		virtio_reset(dev);
+		virtio_reset(virtio);
 	    }
 
 	    break;
@@ -295,8 +288,7 @@ static int virtio_io_write(struct guest_info * core, uint16_t port, void * src,
 
 
 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;
+    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)private_data;
     int port_idx = port % virtio->io_range_size;
 
 
@@ -367,19 +359,22 @@ static int virtio_io_read(struct guest_info * core, uint16_t port, void * dst, u
 }
 
 
+static int virtio_free(struct virtio_balloon_state * virtio) {
+
+    // unregister from PCI
+
+    V3_Free(virtio);
+    return 0;
+}
 
 
 static struct v3_device_ops dev_ops = {
-    .free = virtio_free,
-    .reset = NULL,
-    .start = NULL,
-    .stop = NULL,
-};
+    .free = (int (*)(void *))virtio_free,
 
+};
 
-static int set_size(struct vm_device * dev, addr_t size) {
-    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)dev->private_data;
 
+static int set_size(struct virtio_balloon_state * virtio, addr_t size) {
     virtio->balloon_cfg.requested_pages = size / PAGE_SIZE; // number of pages
 
     PrintDebug("Requesting %d pages\n", virtio->balloon_cfg.requested_pages);
@@ -392,18 +387,17 @@ static int set_size(struct vm_device * dev, addr_t size) {
 
 
 static int handle_hcall(struct guest_info * info, uint_t hcall_id, void * priv_data) {
-    struct vm_device * dev = (struct vm_device *)priv_data;
+    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)priv_data;
     int tgt_size = info->vm_regs.rcx;
 
     
-    return set_size(dev, tgt_size);
+    return set_size(virtio, tgt_size);
 }
 
 
 
 static int handle_query_hcall(struct guest_info * info, uint_t hcall_id, void * priv_data) {
-    struct vm_device * dev = (struct vm_device *)priv_data;
-    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)dev->private_data;
+    struct virtio_balloon_state * virtio = (struct virtio_balloon_state *)priv_data;
     
     info->vm_regs.rcx = virtio->balloon_cfg.requested_pages;
     info->vm_regs.rdx = virtio->balloon_cfg.allocated_pages;
@@ -420,7 +414,7 @@ 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 * name = v3_cfg_val(cfg, "name");
+    char * dev_id = v3_cfg_val(cfg, "ID");
 
     PrintDebug("Initializing VIRTIO Balloon device\n");
 
@@ -430,19 +424,18 @@ static int virtio_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
     }
 
     
-    virtio_state  = (struct virtio_balloon_state *)V3_Malloc(sizeof(struct virtio_balloon_state));
+    virtio_state = (struct virtio_balloon_state *)V3_Malloc(sizeof(struct virtio_balloon_state));
     memset(virtio_state, 0, sizeof(struct virtio_balloon_state));
 
 
-    struct vm_device * dev = v3_allocate_device(name, &dev_ops, virtio_state);
-    if (v3_attach_device(vm, dev) == -1) {
-	PrintError("Could not attach device %s\n", name);
+    struct vm_device * dev = v3_add_device(vm, dev_id, &dev_ops, virtio_state);
+
+    if (dev == NULL) {
+	PrintError("Could not attach device %s\n", dev_id);
+	V3_Free(virtio_state);
 	return -1;
     }
 
-
-
-
     // PCI initialization
     {
 	struct v3_pci_bar bars[6];
@@ -477,16 +470,17 @@ static int virtio_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
 
 	bars[0].io_read = virtio_io_read;
 	bars[0].io_write = virtio_io_write;
-	bars[0].private_data = dev;
+	bars[0].private_data = virtio_state;
 	
 
 	pci_dev = v3_pci_register_device(pci_bus, PCI_STD_DEVICE, 
 					 0, PCI_AUTO_DEV_NUM, 0,
 					 "LNX_VIRTIO_BALLOON", bars,
-					 NULL, NULL, NULL, dev);
+					 NULL, NULL, NULL, virtio_state);
 
 	if (!pci_dev) {
 	    PrintError("Could not register PCI Device\n");
+	    v3_remove_device(dev);
 	    return -1;
 	}
 	
@@ -510,10 +504,10 @@ static int virtio_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
 	virtio_state->pci_bus = pci_bus;
     }
 
-    virtio_reset(dev);
+    virtio_reset(virtio_state);
 
-    v3_register_hypercall(vm, BALLOON_START_HCALL, handle_hcall, dev);
-    v3_register_hypercall(vm, BALLOON_QUERY_HCALL, handle_query_hcall, dev);
+    v3_register_hypercall(vm, BALLOON_START_HCALL, handle_hcall, virtio_state);
+    v3_register_hypercall(vm, BALLOON_QUERY_HCALL, handle_query_hcall, virtio_state);
 
     return 0;
 }