1 files changed, 351 insertions, 0 deletions
diff --git a/arch/s390/include/asm/diag.h b/arch/s390/include/asm/diag.h
new file mode 100644
index 000000000..bed804137
--- /dev/null
+++ b/arch/s390/include/asm/diag.h
@@ -0,0 +1,351 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * s390 diagnose functions
+ *
+ * Copyright IBM Corp. 2007
+ * Author(s): Michael Holzheu <holzheu@de.ibm.com>
+ */
+
+#ifndef _ASM_S390_DIAG_H
+#define _ASM_S390_DIAG_H
+
+#include <linux/if_ether.h>
+#include <linux/percpu.h>
+#include <asm/asm-extable.h>
+#include <asm/cio.h>
+
+enum diag_stat_enum {
+	DIAG_STAT_X008,
+	DIAG_STAT_X00C,
+	DIAG_STAT_X010,
+	DIAG_STAT_X014,
+	DIAG_STAT_X044,
+	DIAG_STAT_X064,
+	DIAG_STAT_X08C,
+	DIAG_STAT_X09C,
+	DIAG_STAT_X0DC,
+	DIAG_STAT_X204,
+	DIAG_STAT_X210,
+	DIAG_STAT_X224,
+	DIAG_STAT_X250,
+	DIAG_STAT_X258,
+	DIAG_STAT_X26C,
+	DIAG_STAT_X288,
+	DIAG_STAT_X2C4,
+	DIAG_STAT_X2FC,
+	DIAG_STAT_X304,
+	DIAG_STAT_X308,
+	DIAG_STAT_X318,
+	DIAG_STAT_X320,
+	DIAG_STAT_X500,
+	NR_DIAG_STAT
+};
+
+void diag_stat_inc(enum diag_stat_enum nr);
+void diag_stat_inc_norecursion(enum diag_stat_enum nr);
+
+/*
+ * Diagnose 10: Release page range
+ */
+static inline void diag10_range(unsigned long start_pfn, unsigned long num_pfn)
+{
+	unsigned long start_addr, end_addr;
+
+	start_addr = pfn_to_phys(start_pfn);
+	end_addr = pfn_to_phys(start_pfn + num_pfn - 1);
+
+	diag_stat_inc(DIAG_STAT_X010);
+	asm volatile(
+		"0:	diag	%0,%1,0x10\n"
+		"1:	nopr	%%r7\n"
+		EX_TABLE(0b, 1b)
+		EX_TABLE(1b, 1b)
+		: : "a" (start_addr), "a" (end_addr));
+}
+
+/*
+ * Diagnose 14: Input spool file manipulation
+ */
+extern int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode);
+
+/*
+ * Diagnose 210: Get information about a virtual device
+ */
+struct diag210 {
+	u16 vrdcdvno;	/* device number (input) */
+	u16 vrdclen;	/* data block length (input) */
+	u8 vrdcvcla;	/* virtual device class (output) */
+	u8 vrdcvtyp;	/* virtual device type (output) */
+	u8 vrdcvsta;	/* virtual device status (output) */
+	u8 vrdcvfla;	/* virtual device flags (output) */
+	u8 vrdcrccl;	/* real device class (output) */
+	u8 vrdccrty;	/* real device type (output) */
+	u8 vrdccrmd;	/* real device model (output) */
+	u8 vrdccrft;	/* real device feature (output) */
+} __packed __aligned(4);
+
+extern int diag210(struct diag210 *addr);
+
+struct diag8c {
+	u8 flags;
+	u8 num_partitions;
+	u16 width;
+	u16 height;
+	u8 data[];
+} __packed __aligned(4);
+
+extern int diag8c(struct diag8c *out, struct ccw_dev_id *devno);
+
+/* bit is set in flags, when physical cpu info is included in diag 204 data */
+#define DIAG204_LPAR_PHYS_FLG 0x80
+#define DIAG204_LPAR_NAME_LEN 8		/* lpar name len in diag 204 data */
+#define DIAG204_CPU_NAME_LEN 16		/* type name len of cpus in diag224 name table */
+
+/* diag 204 subcodes */
+enum diag204_sc {
+	DIAG204_SUBC_STIB4 = 4,
+	DIAG204_SUBC_RSI = 5,
+	DIAG204_SUBC_STIB6 = 6,
+	DIAG204_SUBC_STIB7 = 7
+};
+
+#define DIAG204_SUBCODE_MASK 0xffff
+
+/* The two available diag 204 data formats */
+enum diag204_format {
+	DIAG204_INFO_SIMPLE = 0,
+	DIAG204_INFO_EXT = 0x00010000
+};
+
+enum diag204_cpu_flags {
+	DIAG204_CPU_ONLINE = 0x20,
+	DIAG204_CPU_CAPPED = 0x40,
+};
+
+struct diag204_info_blk_hdr {
+	__u8  npar;
+	__u8  flags;
+	__u16 tslice;
+	__u16 phys_cpus;
+	__u16 this_part;
+	__u64 curtod;
+} __packed;
+
+struct diag204_x_info_blk_hdr {
+	__u8  npar;
+	__u8  flags;
+	__u16 tslice;
+	__u16 phys_cpus;
+	__u16 this_part;
+	__u64 curtod1;
+	__u64 curtod2;
+	char reserved[40];
+} __packed;
+
+struct diag204_part_hdr {
+	__u8 pn;
+	__u8 cpus;
+	char reserved[6];
+	char part_name[DIAG204_LPAR_NAME_LEN];
+} __packed;
+
+struct diag204_x_part_hdr {
+	__u8  pn;
+	__u8  cpus;
+	__u8  rcpus;
+	__u8  pflag;
+	__u32 mlu;
+	char  part_name[DIAG204_LPAR_NAME_LEN];
+	char  lpc_name[8];
+	char  os_name[8];
+	__u64 online_cs;
+	__u64 online_es;
+	__u8  upid;
+	__u8  reserved:3;
+	__u8  mtid:5;
+	char  reserved1[2];
+	__u32 group_mlu;
+	char  group_name[8];
+	char  hardware_group_name[8];
+	char  reserved2[24];
+} __packed;
+
+struct diag204_cpu_info {
+	__u16 cpu_addr;
+	char  reserved1[2];
+	__u8  ctidx;
+	__u8  cflag;
+	__u16 weight;
+	__u64 acc_time;
+	__u64 lp_time;
+} __packed;
+
+struct diag204_x_cpu_info {
+	__u16 cpu_addr;
+	char  reserved1[2];
+	__u8  ctidx;
+	__u8  cflag;
+	__u16 weight;
+	__u64 acc_time;
+	__u64 lp_time;
+	__u16 min_weight;
+	__u16 cur_weight;
+	__u16 max_weight;
+	char  reseved2[2];
+	__u64 online_time;
+	__u64 wait_time;
+	__u32 pma_weight;
+	__u32 polar_weight;
+	__u32 cpu_type_cap;
+	__u32 group_cpu_type_cap;
+	char  reserved3[32];
+} __packed;
+
+struct diag204_phys_hdr {
+	char reserved1[1];
+	__u8 cpus;
+	char reserved2[6];
+	char mgm_name[8];
+} __packed;
+
+struct diag204_x_phys_hdr {
+	char reserved1[1];
+	__u8 cpus;
+	char reserved2[6];
+	char mgm_name[8];
+	char reserved3[80];
+} __packed;
+
+struct diag204_phys_cpu {
+	__u16 cpu_addr;
+	char  reserved1[2];
+	__u8  ctidx;
+	char  reserved2[3];
+	__u64 mgm_time;
+	char  reserved3[8];
+} __packed;
+
+struct diag204_x_phys_cpu {
+	__u16 cpu_addr;
+	char  reserved1[2];
+	__u8  ctidx;
+	char  reserved2[1];
+	__u16 weight;
+	__u64 mgm_time;
+	char  reserved3[80];
+} __packed;
+
+struct diag204_x_part_block {
+	struct diag204_x_part_hdr hdr;
+	struct diag204_x_cpu_info cpus[];
+} __packed;
+
+struct diag204_x_phys_block {
+	struct diag204_x_phys_hdr hdr;
+	struct diag204_x_phys_cpu cpus[];
+} __packed;
+
+enum diag26c_sc {
+	DIAG26C_PORT_VNIC    = 0x00000024,
+	DIAG26C_MAC_SERVICES = 0x00000030
+};
+
+enum diag26c_version {
+	DIAG26C_VERSION2	 = 0x00000002,	/* z/VM 5.4.0 */
+	DIAG26C_VERSION6_VM65918 = 0x00020006	/* z/VM 6.4.0 + VM65918 */
+};
+
+#define DIAG26C_VNIC_INFO	0x0002
+struct diag26c_vnic_req {
+	u32	resp_buf_len;
+	u32	resp_version;
+	u16	req_format;
+	u16	vlan_id;
+	u64	sys_name;
+	u8	res[2];
+	u16	devno;
+} __packed __aligned(8);
+
+#define VNIC_INFO_PROT_L3	1
+#define VNIC_INFO_PROT_L2	2
+/* Note: this is the bare minimum, use it for uninitialized VNICs only. */
+struct diag26c_vnic_resp {
+	u32	version;
+	u32	entry_cnt;
+	/* VNIC info: */
+	u32	next_entry;
+	u64	owner;
+	u16	devno;
+	u8	status;
+	u8	type;
+	u64	lan_owner;
+	u64	lan_name;
+	u64	port_name;
+	u8	port_type;
+	u8	ext_status:6;
+	u8	protocol:2;
+	u16	base_devno;
+	u32	port_num;
+	u32	ifindex;
+	u32	maxinfo;
+	u32	dev_count;
+	/* 3x device info: */
+	u8	dev_info1[28];
+	u8	dev_info2[28];
+	u8	dev_info3[28];
+} __packed __aligned(8);
+
+#define DIAG26C_GET_MAC	0x0000
+struct diag26c_mac_req {
+	u32	resp_buf_len;
+	u32	resp_version;
+	u16	op_code;
+	u16	devno;
+	u8	res[4];
+};
+
+struct diag26c_mac_resp {
+	u32	version;
+	u8	mac[ETH_ALEN];
+	u8	res[2];
+} __aligned(8);
+
+#define CPNC_LINUX		0x4
+union diag318_info {
+	unsigned long val;
+	struct {
+		unsigned long cpnc : 8;
+		unsigned long cpvc : 56;
+	};
+};
+
+int diag204(unsigned long subcode, unsigned long size, void *addr);
+int diag224(void *ptr);
+int diag26c(void *req, void *resp, enum diag26c_sc subcode);
+
+struct hypfs_diag0c_entry;
+
+/*
+ * This structure must contain only pointers/references into
+ * the AMODE31 text section.
+ */
+struct diag_ops {
+	int (*diag210)(struct diag210 *addr);
+	int (*diag26c)(void *req, void *resp, enum diag26c_sc subcode);
+	int (*diag14)(unsigned long rx, unsigned long ry1, unsigned long subcode);
+	int (*diag8c)(struct diag8c *addr, struct ccw_dev_id *devno, size_t len);
+	void (*diag0c)(struct hypfs_diag0c_entry *entry);
+	void (*diag308_reset)(void);
+};
+
+extern struct diag_ops diag_amode31_ops;
+extern struct diag210 *__diag210_tmp_amode31;
+
+int _diag210_amode31(struct diag210 *addr);
+int _diag26c_amode31(void *req, void *resp, enum diag26c_sc subcode);
+int _diag14_amode31(unsigned long rx, unsigned long ry1, unsigned long subcode);
+void _diag0c_amode31(struct hypfs_diag0c_entry *entry);
+void _diag308_reset_amode31(void);
+int _diag8c_amode31(struct diag8c *addr, struct ccw_dev_id *devno, size_t len);
+
+#endif /* _ASM_S390_DIAG_H */