/* SPDX-License-Identifier: GPL-2.0 */
/*
 * s390 diagnose functions
 *
 * Copyright IBM Corp. 2007
 * Author(s): Michael Holzheu <[email protected]>
 */

#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/sclp.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_X310,
	DIAG_STAT_X318,
	DIAG_STAT_X320,
	DIAG_STAT_X324,
	DIAG_STAT_X49C,
	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);

struct hypfs_diag0c_entry;

/*
 * Diagnose 0c: Pseudo Timer
 */
void diag0c(struct hypfs_diag0c_entry *data);

/*
 * 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
#define DIAG204_BIF_BIT 0x80000000
#define DIAG204_BUSY_WAIT (HZ / 10)

/* 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;
	};
};

static inline bool diag204_has_bif(void)
{
	return sclp.has_diag204_bif;
}

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)(unsigned long rx, unsigned long rx1, 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)(unsigned long rx);
	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(unsigned long rx, unsigned long rx1, enum diag26c_sc subcode);
int _diag14_amode31(unsigned long rx, unsigned long ry1, unsigned long subcode);
void _diag0c_amode31(unsigned long rx);
void _diag308_reset_amode31(void);
int _diag8c_amode31(struct diag8c *addr, struct ccw_dev_id *devno, size_t len);

/* diag 49c subcodes */
enum diag49c_sc {
	DIAG49C_SUBC_ACK = 0,
	DIAG49C_SUBC_REG = 1
};

int diag49c(unsigned long subcode);

#endif /* _ASM_S390_DIAG_H */