1 files changed, 59 insertions, 0 deletions
diff --git a/arch/s390/include/asm/clp.h b/arch/s390/include/asm/clp.h
new file mode 100644
index 000000000..10919eeb7
--- /dev/null
+++ b/arch/s390/include/asm/clp.h
@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_S390_CLP_H
+#define _ASM_S390_CLP_H
+
+/* CLP common request & response block size */
+#define CLP_BLK_SIZE			PAGE_SIZE
+
+/* Call Logical Processor - Command Code */
+#define CLP_SLPC		0x0001
+
+#define CLP_LPS_BASE	0
+#define CLP_LPS_PCI	2
+
+struct clp_req_hdr {
+	u16 len;
+	u16 cmd;
+	u32 fmt		: 4;
+	u32 reserved1	: 28;
+	u64 reserved2;
+} __packed;
+
+struct clp_rsp_hdr {
+	u16 len;
+	u16 rsp;
+	u32 fmt		: 4;
+	u32 reserved1	: 28;
+	u64 reserved2;
+} __packed;
+
+/* CLP Response Codes */
+#define CLP_RC_OK			0x0010	/* Command request successfully */
+#define CLP_RC_CMD			0x0020	/* Command code not recognized */
+#define CLP_RC_PERM			0x0030	/* Command not authorized */
+#define CLP_RC_FMT			0x0040	/* Invalid command request format */
+#define CLP_RC_LEN			0x0050	/* Invalid command request length */
+#define CLP_RC_8K			0x0060	/* Command requires 8K LPCB */
+#define CLP_RC_RESNOT0			0x0070	/* Reserved field not zero */
+#define CLP_RC_NODATA			0x0080	/* No data available */
+#define CLP_RC_FC_UNKNOWN		0x0100	/* Function code not recognized */
+
+/* Store logical-processor characteristics request */
+struct clp_req_slpc {
+	struct clp_req_hdr hdr;
+} __packed;
+
+struct clp_rsp_slpc {
+	struct clp_rsp_hdr hdr;
+	u32 reserved2[4];
+	u32 lpif[8];
+	u32 reserved3[8];
+	u32 lpic[8];
+} __packed;
+
+struct clp_req_rsp_slpc {
+	struct clp_req_slpc request;
+	struct clp_rsp_slpc response;
+} __packed;
+
+#endif