[RFC PATCH v2 07/20] cxl: Add Set Feature command support for user submission

[Dave Jiang <dave.jiang@intel.com>]

Add enumeration of Set Feature mailbox command for the kernel to recognize
the command being passed in from user space.

CXL spec r3.1 8.2.9.6.3 Set Feature (Opcode 0502h)

The feature requested is identified by specific UUID.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
---
 drivers/cxl/core/mbox.c      | 1 +
 include/uapi/linux/cxl_mem.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c
index 4b9abf9a5b2b..739444d34130 100644
--- a/drivers/cxl/core/mbox.c
+++ b/drivers/cxl/core/mbox.c
@@ -69,6 +69,7 @@ static struct cxl_mem_command cxl_mem_commands[CXL_MEM_COMMAND_ID_MAX] = {
 	CXL_CMD(GET_TIMESTAMP, 0, 0x8, 0),
 	CXL_CMD(GET_SUPPORTED_FEATURES, 0x8, CXL_VARIABLE_PAYLOAD, 0),
 	CXL_CMD(GET_FEATURE, 0x15, CXL_VARIABLE_PAYLOAD, 0),
+	CXL_CMD(SET_FEATURE, CXL_VARIABLE_PAYLOAD, 0, 0),
 };
 
 /*
diff --git a/include/uapi/linux/cxl_mem.h b/include/uapi/linux/cxl_mem.h
index 90dcb9723997..469dd481795f 100644
--- a/include/uapi/linux/cxl_mem.h
+++ b/include/uapi/linux/cxl_mem.h
@@ -52,6 +52,7 @@
 	___C(GET_SUP_LOG_SUBLIST, "Get Supported Logs Sub-List"),	  \
 	___C(GET_SUPPORTED_FEATURES, "Get Supported Features"),		  \
 	___C(GET_FEATURE, "Get Feature"),				  \
+	___C(SET_FEATURE, "Set Feature"),				  \
 	___C(MAX, "invalid / last command")
 
 #define ___C(a, b) CXL_MEM_COMMAND_ID_##a
-- 
2.47.0