caif: Add debug connection type for CAIF.

Added new CAIF protocol type CAIFPROTO_DEBUG for accessing
CAIF debug on the ST Ericsson modems.

There are two debug servers on the modem, one for radio related
debug (CAIF_RADIO_DEBUG_SERVICE) and the other for
communication/application related debug (CAIF_COM_DEBUG_SERVICE).

The debug connection can contain trace debug printouts or
interactive debug used for debugging and test.

Debug connections can be of type STREAM or SEQPACKET.

Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 34 insertions, 0 deletions

diff --git a/include/linux/caif/caif_socket.h b/include/linux/caif/caif_socket.h
index 2a61eb1beb85..d9cb19b7cff7 100644
--- a/include/linux/caif/caif_socket.h
+++ b/include/linux/caif/caif_socket.h
@@ -62,6 +62,7 @@ enum caif_channel_priority {
  * @CAIFPROTO_DATAGRAM_LOOP:    Datagram loopback channel, used for testing.
  * @CAIFPROTO_UTIL:             Utility (Psock) channel.
  * @CAIFPROTO_RFM:              Remote File Manager
+ * @CAIFPROTO_DEBUG:            Debug link
  *
  * This enum defines the CAIF Channel type to be used. This defines
  * the service to connect to on the modem.
@@ -72,6 +73,7 @@ enum caif_protocol_type {
         CAIFPROTO_DATAGRAM_LOOP,
         CAIFPROTO_UTIL,
         CAIFPROTO_RFM,
+        CAIFPROTO_DEBUG,
         _CAIFPROTO_MAX
 };
 #define CAIFPROTO_MAX _CAIFPROTO_MAX
@@ -83,6 +85,28 @@ enum caif_protocol_type {
 enum caif_at_type {
         CAIF_ATTYPE_PLAIN = 2
 };
+ /**
+ * enum caif_debug_type - Content selection for debug connection
+ * @CAIF_DEBUG_TRACE_INTERACTIVE: Connection will contain
+ *                              both trace and interactive debug.
+ * @CAIF_DEBUG_TRACE:           Connection contains trace only.
+ * @CAIF_DEBUG_INTERACTIVE:     Connection to interactive debug.
+ */
+enum caif_debug_type {
+        CAIF_DEBUG_TRACE_INTERACTIVE = 0,
+        CAIF_DEBUG_TRACE,
+        CAIF_DEBUG_INTERACTIVE,
+};
+
+/**
+ * enum caif_debug_service - Debug Service Endpoint
+ * @CAIF_RADIO_DEBUG_SERVICE:   Debug service on the Radio sub-system
+ * @CAIF_APP_DEBUG_SERVICE:     Debug for the applications sub-system
+ */
+enum caif_debug_service {
+        CAIF_RADIO_DEBUG_SERVICE = 1,
+        CAIF_APP_DEBUG_SERVICE
+};
 
 /**
  * struct sockaddr_caif - the sockaddr structure for CAIF sockets.
@@ -109,6 +133,12 @@ enum caif_at_type {
  *
  * @u.rfm.volume:            Volume to mount.
  *
+ * @u.dbg:                    Applies when family = CAIFPROTO_DEBUG.
+ *
+ * @u.dbg.type:                      Type of debug connection to set up
+ *                            (caif_debug_type).
+ *
+ * @u.dbg.service:            Service sub-system to connect (caif_debug_service
  * Description:
  * This structure holds the connect parameters used for setting up a
  * CAIF Channel. It defines the service to connect to on the modem.
@@ -130,6 +160,10 @@ struct sockaddr_caif {
                         __u32 connection_id;
                         char      volume[16];
                 } rfm;                          /* CAIFPROTO_RFM */
+                struct {
+                        __u8  type;             /* type:enum caif_debug_type */
+                        __u8  service;          /* service:caif_debug_service */
+                } dbg;                          /* CAIFPROTO_DEBUG */
         } u;
 };