Changeset deac215e in mainline for uspace/drv/infrastructure/rootvirt/rootvirt.c

Timestamp:

2011-09-03T13:37:16Z (13 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

8ff0bd2, a9abe5fc

Parents:

b29bb09

Message:

rootvirt removal support.

File:

• uspace/drv/infrastructure/rootvirt/rootvirt.c (modified) (7 diffs)

uspace/drv/infrastructure/rootvirt/rootvirt.c

@@ -63 +63 @@
 
 static int rootvirt_add_device(ddf_dev_t *dev);
+static int rootvirt_dev_remove(ddf_dev_t *dev);
 static int rootvirt_fun_online(ddf_fun_t *fun);
 static int rootvirt_fun_offline(ddf_fun_t *fun);
@@ -68 +69 @@
 static driver_ops_t rootvirt_ops = {
         .add_device = &rootvirt_add_device,
+        .dev_remove = &rootvirt_dev_remove,
         .fun_online = &rootvirt_fun_online,
         .fun_offline = &rootvirt_fun_offline
@@ -77 +79 @@
 };
 
+/* Device soft state */
+typedef struct {
+        ddf_dev_t *dev;
+        list_t functions;
+} rootvirt_t;
+
+/* Function soft state */
+typedef struct {
+        ddf_fun_t *fun;
+        link_t dev_link;
+} rootvirt_fun_t;
+
+static int instances = 0;
+
+
 /** Add function to the virtual device.
  *
@@ -83 +100 @@
  * @return              EOK on success or negative error code.
  */
-static int rootvirt_add_fun(ddf_dev_t *vdev, virtual_function_t *vfun)
-{
+static int rootvirt_add_fun(rootvirt_t *rootvirt, virtual_function_t *vfun)
+{
+        ddf_dev_t *vdev = rootvirt->dev;
         ddf_fun_t *fun;
+        rootvirt_fun_t *rvfun;
         int rc;
 
@@ -97 +116 @@
         }
 
+        rvfun = ddf_fun_data_alloc(fun, sizeof(rootvirt_fun_t));
+        if (rvfun == NULL) {
+                ddf_msg(LVL_ERROR, "Failed allocating soft state for %s.",
+                    vfun->name);
+                ddf_fun_destroy(fun);
+                return ENOMEM;
+        }
+
+        rvfun->fun = fun;
+
         rc = ddf_fun_add_match_id(fun, vfun->match_id, 10);
         if (rc != EOK) {
@@ -113 +142 @@
         }
 
+        list_append(&rvfun->dev_link, &rootvirt->functions);
+
         ddf_msg(LVL_NOTE, "Registered child device `%s'", vfun->name);
         return EOK;
 }
 
+static int rootvirt_fun_remove(rootvirt_fun_t *rvfun)
+{
+        int rc;
+        const char *name = rvfun->fun->name;
+
+        ddf_msg(LVL_DEBUG, "rootvirt_fun_remove('%s')", name);
+        rc = ddf_fun_offline(rvfun->fun);
+        if (rc != EOK) {
+                ddf_msg(LVL_ERROR, "Error offlining function '%s'.", name);
+                return rc;
+        }
+
+        rc = ddf_fun_unbind(rvfun->fun);
+        if (rc != EOK) {
+                ddf_msg(LVL_ERROR, "Failed unbinding function '%s'.", name);
+                return rc;
+        }
+
+        list_remove(&rvfun->dev_link);
+        ddf_fun_destroy(rvfun->fun);
+        return EOK;
+}
+
+
 static int rootvirt_add_device(ddf_dev_t *dev)
 {
-        static int instances = 0;
+        rootvirt_t *rootvirt;
 
         /*
          * Allow only single instance of root virtual device.
          */
-        instances++;
-        if (instances > 1) {
+        if (++instances > 1) {
                 return ELIMIT;
         }
 
         ddf_msg(LVL_DEBUG, "add_device(handle=%d)", (int)dev->handle);
+
+        rootvirt = ddf_dev_data_alloc(dev, sizeof(rootvirt_t));
+        if (rootvirt == NULL)
+                return ENOMEM;
+
+        rootvirt->dev = dev;
+        list_initialize(&rootvirt->functions);
 
         /*
@@ -137 +198 @@
         virtual_function_t *vfun = virtual_functions;
         while (vfun->name != NULL) {
-                (void) rootvirt_add_fun(dev, vfun);
+                (void) rootvirt_add_fun(rootvirt, vfun);
                 vfun++;
         }
 
+        return EOK;
+}
+
+static int rootvirt_dev_remove(ddf_dev_t *dev)
+{
+        rootvirt_t *rootvirt = (rootvirt_t *)dev->driver_data;
+        int rc;
+
+        while (!list_empty(&rootvirt->functions)) {
+                rootvirt_fun_t *rvfun = list_get_instance(
+                    list_first(&rootvirt->functions), rootvirt_fun_t,
+                        dev_link);
+
+                rc = rootvirt_fun_remove(rvfun);
+                if (rc != EOK)
+                        return rc;
+        }
+
+        --instances;
         return EOK;
 }