Changeset b252e87 in mainline for uspace/lib/ddev/src

Timestamp:

2020-02-11T11:17:22Z (5 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

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

Children:

e1f2079

Parents:

b43edabe

git-author:

Jiri Svoboda <jiri@…> (2020-02-10 20:17:06)

git-committer:

Jiri Svoboda <jiri@…> (2020-02-11 11:17:22)

Message:

Add method for getting display device information

Location:

uspace/lib/ddev/src

Files:

• ddev.c (modified) (1 diff)
• ddev_srv.c (modified) (2 diffs)
• info.c (added)

uspace/lib/ddev/src/ddev.c

@@ -111 +111 @@
 }
 
+/** Get display device information.
+ *
+ * @param ddev Display device
+ * @param info Place to store information
+ */
+errno_t ddev_get_info(ddev_t *ddev, ddev_info_t *info)
+{
+        async_exch_t *exch;
+        errno_t retval;
+        ipc_call_t answer;
+
+        exch = async_exchange_begin(ddev->sess);
+        aid_t req = async_send_0(exch, DDEV_GET_INFO, &answer);
+
+        errno_t rc = async_data_read_start(exch, info, sizeof(ddev_info_t));
+        async_exchange_end(exch);
+        if (rc != EOK) {
+                async_forget(req);
+                return rc;
+        }
+
+        async_wait_for(req, &retval);
+        if (retval != EOK)
+                return rc;
+
+        return EOK;
+}
+
 /** @}
  */

uspace/lib/ddev/src/ddev_srv.c

@@ -70 +70 @@
 }
 
+/** Get display device information */
+static void ddev_get_info_srv(ddev_srv_t *srv, ipc_call_t *icall)
+{
+        ddev_info_t info;
+        errno_t rc;
+
+        printf("ddev_get_info_srv\n");
+
+        ipc_call_t call;
+        size_t size;
+        if (!async_data_read_receive(&call, &size)) {
+                async_answer_0(&call, EREFUSED);
+                async_answer_0(icall, EREFUSED);
+                return;
+        }
+
+        if (size != sizeof(ddev_info_t)) {
+                async_answer_0(&call, EINVAL);
+                async_answer_0(icall, EINVAL);
+                return;
+        }
+
+        if (srv->ops->get_info == NULL) {
+                printf("get_info is NULL -> ENOTSUP\n");
+                async_answer_0(&call, ENOTSUP);
+                async_answer_0(icall, ENOTSUP);
+                return;
+        }
+
+        rc = srv->ops->get_info(srv->arg, &info);
+        if (rc != EOK) {
+                async_answer_0(&call, rc);
+                async_answer_0(icall, rc);
+                return;
+        }
+
+        rc = async_data_read_finalize(&call, &info, sizeof(ddev_info_t));
+        if (rc != EOK) {
+                async_answer_0(icall, rc);
+                return;
+        }
+
+        async_answer_0(icall, EOK);
+}
+
 void ddev_conn(ipc_call_t *icall, ddev_srv_t *srv)
 {
@@ -92 +137 @@
                 case DDEV_GET_GC:
                         ddev_get_gc_srv(srv, &call);
+                        break;
+                case DDEV_GET_INFO:
+                        ddev_get_info_srv(srv, &call);
                         break;
                 default: