Changes in uspace/lib/drv/generic/driver.c [b454a22:8820544] in mainline

File:

• uspace/lib/drv/generic/driver.c (modified) (12 diffs)

uspace/lib/drv/generic/driver.c

@@ -49 +49 @@
 #include <str_error.h>
 #include <ctype.h>
+#include <errno.h>
 #include <inttypes.h>
 #include <devman.h>
+
+#include <ipc/driver.h>
 
 #include "dev_iface.h"
@@ -120 +123 @@
         devman_handle_t parent_fun_handle = IPC_GET_ARG2(*icall);
         
-        char *dev_name = NULL;
-        int rc = async_data_write_accept((void **) &dev_name, true, 0, 0, 0, 0);
-        if (rc != EOK) {
-                async_answer_0(iid, rc);
-                return;
-        }
-
         ddf_dev_t *dev = create_device();
-        if (!dev) {
-                free(dev_name);
-                async_answer_0(iid, ENOMEM);
-                return;
-        }
-
+        
         /* Add one reference that will be dropped by driver_dev_remove() */
         dev_add_ref(dev);
         dev->handle = dev_handle;
+        
+        char *dev_name = NULL;
+        async_data_write_accept((void **) &dev_name, true, 0, 0, 0, 0);
         dev->name = dev_name;
         
@@ -284 +278 @@
 }
 
-static void driver_connection_devman(ipc_callid_t iid, ipc_call_t *icall,
-    void *arg)
+static void driver_connection_devman(ipc_callid_t iid, ipc_call_t *icall)
 {
         /* Accept connection */
@@ -335 +328 @@
         fibril_mutex_lock(&functions_mutex);
         ddf_fun_t *fun = driver_get_function(handle);
-        if (fun != NULL)
-                fun_add_ref(fun);
         fibril_mutex_unlock(&functions_mutex);
+        /* XXX Need a lock on fun */
         
         if (fun == NULL) {
@@ -349 +341 @@
                 /* Driver has a custom connection handler. */
                 (*fun->conn_handler)(iid, icall, (void *)fun);
-                fun_del_ref(fun);
                 return;
         }
@@ -364 +355 @@
         
         async_answer_0(iid, ret);
-        if (ret != EOK) {
-                fun_del_ref(fun);
+        if (ret != EOK)
                 return;
-        }
         
         while (true) {
@@ -380 +369 @@
                                 (*fun->ops->close)(fun);
                         async_answer_0(callid, EOK);
-                        fun_del_ref(fun);
                         return;
                 }
@@ -448 +436 @@
 }
 
-static void driver_connection_driver(ipc_callid_t iid, ipc_call_t *icall,
-    void *arg)
+static void driver_connection_driver(ipc_callid_t iid, ipc_call_t *icall)
 {
         driver_connection_gen(iid, icall, true);
 }
 
-static void driver_connection_client(ipc_callid_t iid, ipc_call_t *icall,
-    void *arg)
+static void driver_connection_client(ipc_callid_t iid, ipc_call_t *icall)
 {
         driver_connection_gen(iid, icall, false);
+}
+
+/** Function for handling connections to device driver. */
+static void driver_connection(ipc_callid_t iid, ipc_call_t *icall, void *arg)
+{
+        sysarg_t conn_type;
+
+        if (iid == 0) {
+                /* Callback connection from devman */
+                /* XXX Use separate handler for this type of connection */
+                conn_type = DRIVER_DEVMAN;
+        } else {
+                conn_type = IPC_GET_ARG1(*icall);
+        }
+
+        /* Select interface */
+        switch (conn_type) {
+        case DRIVER_DEVMAN:
+                /* Handle request from device manager */
+                driver_connection_devman(iid, icall);
+                break;
+        case DRIVER_DRIVER:
+                /* Handle request from drivers of child devices */
+                driver_connection_driver(iid, icall);
+                break;
+        case DRIVER_CLIENT:
+                /* Handle request from client applications */
+                driver_connection_client(iid, icall);
+                break;
+        default:
+                /* No such interface */
+                async_answer_0(iid, ENOENT);
+        }
 }
 
@@ -503 +522 @@
         if (dev->driver_data != NULL)
                 free(dev->driver_data);
-        if (dev->name)
-                free(dev->name);
         free(dev);
 }
@@ -603 +620 @@
  * The session will be automatically closed when @a dev is destroyed.
  *
- * @param dev Device
- *
- * @return New session or NULL if session could not be created
- *
- */
-async_sess_t *ddf_dev_parent_sess_create(ddf_dev_t *dev)
+ * @param dev   Device
+ * @param mgmt  Exchange management style
+ * @return      New session or NULL if session could not be created
+ */
+async_sess_t *ddf_dev_parent_sess_create(ddf_dev_t *dev, exch_mgmt_t mgmt)
 {
         assert(dev->parent_sess == NULL);
-        dev->parent_sess = devman_parent_device_connect(dev->handle,
+        dev->parent_sess = devman_parent_device_connect(mgmt, dev->handle,
             IPC_FLAG_BLOCKING);
 
@@ -900 +916 @@
  * This allows handling connections the non-devman way.
  */
-void ddf_fun_set_conn_handler(ddf_fun_t *fun, async_port_handler_t conn)
+void ddf_fun_set_conn_handler(ddf_fun_t *fun, async_client_conn_t conn)
 {
         assert(fun->ops == NULL);
@@ -939 +955 @@
          * incoming connections.
          */
-        port_id_t port;
-        int rc = async_create_port(INTERFACE_DDF_DRIVER, driver_connection_driver,
-            NULL, &port);
-        if (rc != EOK)
-                return rc;
-        
-        rc = async_create_port(INTERFACE_DDF_DEVMAN, driver_connection_devman,
-            NULL, &port);
-        if (rc != EOK)
-                return rc;
-        
-        async_set_fallback_port_handler(driver_connection_client, NULL);
-        
-        rc = devman_driver_register(driver->name);
+        async_set_client_connection(driver_connection);
+        int rc = devman_driver_register(driver->name);
         if (rc != EOK) {
                 printf("Error: Failed to register driver with device manager "
-                    "(%s).\n", (rc == EEXIST) ? "driver already started" :
+                    "(%s).\n", (rc == EEXISTS) ? "driver already started" :
                     str_error(rc));