From cb330f4bf1f519032ee50d60f473c28df7b772d8 Mon Sep 17 00:00:00 2001
From: Nikhil Potade <nikhil.potade@linux.intel.com>
Date: Tue, 19 Feb 2019 14:16:20 +0800
Subject: [PATCH] Smbus changes for libmctp

---
 CMakeLists.txt |  6 ++++--
 core.c         |  2 ++
 libmctp.h      | 40 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 46 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a5b1042..249b12b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,8 +2,9 @@ cmake_minimum_required (VERSION 3.5 FATAL_ERROR)
 
 add_definitions (-DMCTP_LOG_STDERR)
 add_definitions (-DMCTP_FILEIO)
+add_definitions (-DMCTP_DEFAULT_ALLOC)
 
-add_library (libmctp STATIC alloc.c core.c log.c libmctp.h serial.c)
+add_library (libmctp STATIC alloc.c core.c log.c libmctp.h serial.c smbus.c crc32c.c)
 
 target_include_directories (libmctp PUBLIC
                             $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
@@ -18,5 +19,6 @@ add_executable (test_seq tests/test_seq.c tests/test-utils.c)
 target_link_libraries (test_seq libmctp)
 
 install (TARGETS libmctp DESTINATION lib)
-install (FILES libmctp.h DESTINATION include)
+install (FILES libmctp.h libmctp-smbus.h libmctp-serial.h crc32c.h DESTINATION
+       include)
 
diff --git a/core.c b/core.c
index b855ced..8be7407 100644
--- a/core.c
+++ b/core.c
@@ -17,6 +17,7 @@
 
 /* Internal data structures */
 
+/* clang-format off */
 struct mctp_bus {
 	mctp_eid_t		eid;
 	struct mctp_binding	*binding;
@@ -50,6 +51,7 @@ struct mctp {
 	 */
 	struct mctp_msg_ctx	msg_ctxs[16];
 };
+/* clang-format on */
 
 #ifndef BUILD_ASSERT
 #define BUILD_ASSERT(x) \
diff --git a/libmctp.h b/libmctp.h
index f0633e3..cec7c00 100644
--- a/libmctp.h
+++ b/libmctp.h
@@ -15,6 +15,7 @@ extern "C" {
 typedef uint8_t mctp_eid_t;
 
 /* MCTP packet definitions */
+/* clang-format off */
 struct mctp_hdr {
 	uint8_t	ver;
 	uint8_t	dest;
@@ -30,12 +31,47 @@ struct mctp_hdr {
 #define MCTP_HDR_SEQ_MASK	(0x3)
 #define MCTP_HDR_TAG_SHIFT	(0)
 #define MCTP_HDR_TAG_MASK	(0x7)
+/* clang-format on */
 
 /* Maximum size of *payload* data in a MCTP packet
  * @todo: dynamic sixing based on channel implementation.
  */
 #define MCTP_MTU	64
 
+#define MCTP_CONTROL_MESSAGE_TYPE	0x00
+
+enum MCTP_COMMAND_CODE {
+	MCTP_COMMAND_CODE_SET_EID			= 0x01,
+	MCTP_COMMAND_CODE_GET_EID			= 0x02,
+	MCTP_COMMAND_CODE_GET_ENDPOINT_UUID		= 0x03,
+	MCTP_COMMAND_CODE_GET_MCTP_VERSION_SUPPORT	= 0x04,
+	MCTP_COMMAND_CODE_GET_MESSAGE_TYPE_SUPPORT	= 0x05,
+	MCTP_COMMAND_CODE_GET_VENDOR_DEFINED_MSG_SUPPORT= 0x06,
+	MCTP_COMMAND_CODE_RESOLVE_ENDPOINT_ID		= 0x07,
+	MCTP_COMMAND_CODE_ALLOCATE_ENDPOINT_IDS		= 0x08,
+	MCTP_COMMAND_CODE_ROUTING_INFORMATION_UPDATE	= 0x09,
+	MCTP_COMMAND_CODE_GET_ROUTING_TABLE_ENTRIES	= 0x0A,
+	MCTP_COMMAND_CODE_PREPARE_FOR_ENDPOINT_DISCOVERY= 0x0B,
+	MCTP_COMMAND_CODE_ENDPOINT_DISCOVERY		= 0x0C,
+	MCTP_COMMAND_CODE_DISCOVERY_NOTIFY		= 0x0D,
+	MCTP_COMMAND_CODE_GET_NETWORK_ID		= 0x0E,
+	MCTP_COMMAND_CODE_QUERY_HOP			= 0x0F,
+	MCTP_COMMAND_CODE_RESOLVE_UUID			= 0x10,
+	MCTP_COMMAND_CODE_QUERY_RATE_LIMIT		= 0x11,
+	MCTP_COMMAND_CODE_REQUEST_TX_RATE_LIMIT		= 0x12,
+	MCTP_COMMAND_CODE_UPDATE_RATE_LIMIT		= 0x13,
+	MCTP_COMMAND_CODE_QUERY_SUPPORTED_INTERFACES	= 0x14
+};
+
+enum MCTP_CONTROL_MSG_COMPLETION_CODE {
+	MCTP_CONTROL_MSG_STATUS_SUCCESS			= 0x00,
+	MCTP_CONTROL_MSG_STATUS_ERROR			= 0x01,
+	MCTP_CONTROL_MSG_STATUS_ERROR_INVALID_DATA	= 0x02,
+	MCTP_CONTROL_MSG_STATUS_ERROR_INVALID_LENGTH	= 0x03,
+	MCTP_CONTROL_MSG_STATUS_ERROR_NOT_READY		= 0x04,
+	MCTP_CONTROL_MSG_STATUS_ERROR_UNSUPPORTED_CMD	= 0x05
+};
+
 /* packet buffers */
 
 /* Allow a little space before the MCTP header in the packet, for bindings that
@@ -46,12 +82,14 @@ struct mctp_hdr {
 #define MCTP_PKTBUF_SIZE	(MCTP_PKTBUF_BINDING_PAD + \
 		(sizeof(struct mctp_hdr) + MCTP_MTU))
 
+/* clang-format off */
 struct mctp_pktbuf {
 	unsigned char	data[MCTP_PKTBUF_SIZE];
 	uint8_t		start, end;
 	uint8_t		mctp_hdr_off;
 	struct mctp_pktbuf *next;
 };
+/* clang-format on */
 
 struct mctp_pktbuf *mctp_pktbuf_alloc(uint8_t len);
 void mctp_pktbuf_free(struct mctp_pktbuf *pkt);
@@ -85,6 +123,7 @@ int mctp_message_tx(struct mctp *mctp, mctp_eid_t eid,
 		void *msg, size_t msg_len);
 
 /* hardware bindings */
+/* clang-format off */
 struct mctp_binding {
 	const char	*name;
 	uint8_t		version;
@@ -93,6 +132,7 @@ struct mctp_binding {
 	int		(*tx)(struct mctp_binding *binding,
 				struct mctp_pktbuf *pkt);
 };
+/* clang-format on */
 
 void mctp_binding_set_tx_enabled(struct mctp_binding *binding, bool enable);
 
-- 
2.17.1