Changes in uspace/drv/bus/usb/xhci/commands.h [e2172284:ae3a941] in mainline

File:

• uspace/drv/bus/usb/xhci/commands.h (modified) (1 diff)

uspace/drv/bus/usb/xhci/commands.h

@@ -144 +144 @@
 extern errno_t xhci_cmd_async_fini(xhci_hc_t *, xhci_cmd_t *);
 
+static inline errno_t xhci_cmd_sync_inline_wrapper(xhci_hc_t *hc, xhci_cmd_t cmd)
+{
+        /* Poor man's xhci_cmd_init (everything else is zeroed) */
+        link_initialize(&cmd._header.link);
+        fibril_mutex_initialize(&cmd._header.completed_mtx);
+        fibril_condvar_initialize(&cmd._header.completed_cv);
+
+        /* Issue the command */
+        const errno_t err = xhci_cmd_sync(hc, &cmd);
+        xhci_cmd_fini(&cmd);
+
+        return err;
+}
+
+/** The inline macro expects:
+ *    - hc      - HC to schedule command on (xhci_hc_t *).
+ *    - command - Member of `xhci_cmd_type_t` without the "XHCI_CMD_" prefix.
+ *    - VA_ARGS - (optional) Command arguments in struct initialization notation.
+ *
+ *  The return code and semantics matches those of `xhci_cmd_sync_fini`.
+ *
+ *  Example:
+ *    errno_t err = xhci_cmd_sync_inline(hc, DISABLE_SLOT, .slot_id = 42);
+ */
+
+#define xhci_cmd_sync_inline(hc, command, ...) \
+        xhci_cmd_sync_inline_wrapper(hc, \
+        (xhci_cmd_t) { ._header.cmd = XHCI_CMD_##command, ##__VA_ARGS__ })
+
 #endif