Merge remote-tracking branch 'cxl/for-6.10/add-log-mbox-cmds' into cxl-for-next

Add CXL log related mailbox commands
- Add Get Log Capabilities command
- Add Get Supported Log Sub-List Commands command
- Add Clear Log command

Author: davejiang

drivers/cxl/core/mbox.c

@@ -56,6 +56,9 @@ static struct cxl_mem_command cxl_mem_commands[CXL_MEM_COMMAND_ID_MAX] = {
 	CXL_CMD(GET_LSA, 0x8, CXL_VARIABLE_PAYLOAD, 0),
 	CXL_CMD(GET_HEALTH_INFO, 0, 0x12, 0),
 	CXL_CMD(GET_LOG, 0x18, CXL_VARIABLE_PAYLOAD, CXL_CMD_FLAG_FORCE_ENABLE),
+	CXL_CMD(GET_LOG_CAPS, 0x10, 0x4, 0),
+	CXL_CMD(CLEAR_LOG, 0x10, 0, 0),
+	CXL_CMD(GET_SUP_LOG_SUBLIST, 0x2, CXL_VARIABLE_PAYLOAD, 0),
 	CXL_CMD(SET_PARTITION_INFO, 0x0a, 0, 0),
 	CXL_CMD(SET_LSA, CXL_VARIABLE_PAYLOAD, 0, 0),
 	CXL_CMD(GET_ALERT_CONFIG, 0, 0x10, 0),
@@ -331,6 +334,15 @@ static bool cxl_payload_from_user_allowed(u16 opcode, void *payload_in)
 			return false;
 		break;
 	}
+	case CXL_MBOX_OP_CLEAR_LOG: {
+		const uuid_t *uuid = (uuid_t *)payload_in;
+
+		/*
+		 * Restrict the ‘Clear log’ action to only apply to
+		 * Vendor debug logs.
+		 */
+		return uuid_equal(uuid, &DEFINE_CXL_VENDOR_DEBUG_UUID);
+	}
 	default:
 		break;
 	}

drivers/cxl/cxlmem.h

@@ -527,6 +527,9 @@ enum cxl_opcode {
 	CXL_MBOX_OP_SET_TIMESTAMP	= 0x0301,
 	CXL_MBOX_OP_GET_SUPPORTED_LOGS	= 0x0400,
 	CXL_MBOX_OP_GET_LOG		= 0x0401,
+	CXL_MBOX_OP_GET_LOG_CAPS	= 0x0402,
+	CXL_MBOX_OP_CLEAR_LOG           = 0x0403,
+	CXL_MBOX_OP_GET_SUP_LOG_SUBLIST = 0x0405,
 	CXL_MBOX_OP_IDENTIFY		= 0x4000,
 	CXL_MBOX_OP_GET_PARTITION_INFO	= 0x4100,
 	CXL_MBOX_OP_SET_PARTITION_INFO	= 0x4101,

include/uapi/linux/cxl_mem.h

@@ -47,6 +47,9 @@
 	___DEPRECATED(SCAN_MEDIA, "Scan Media"),                          \
 	___DEPRECATED(GET_SCAN_MEDIA, "Get Scan Media Results"),          \
 	___C(GET_TIMESTAMP, "Get Timestamp"),                             \
+	___C(GET_LOG_CAPS, "Get Log Capabilities"),			  \
+	___C(CLEAR_LOG, "Clear Log"),					  \
+	___C(GET_SUP_LOG_SUBLIST, "Get Supported Logs Sub-List"),	  \
 	___C(MAX, "invalid / last command")
 
 #define ___C(a, b) CXL_MEM_COMMAND_ID_##a