[mirror_ubuntu-bionic-kernel.git] / drivers / s390 / cio / chsc.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef S390_CHSC_H
#define S390_CHSC_H

#include <linux/types.h>
#include <linux/device.h>
#include <asm/css_chars.h>
#include <asm/chpid.h>
#include <asm/chsc.h>
#include <asm/schid.h>
#include <asm/qdio.h>

#define CHSC_SDA_OC_MSS   0x2

#define NR_MEASUREMENT_CHARS 5
struct cmg_chars {
	u32 values[NR_MEASUREMENT_CHARS];
} __attribute__ ((packed));

#define NR_MEASUREMENT_ENTRIES 8
struct cmg_entry {
	u32 values[NR_MEASUREMENT_ENTRIES];
} __attribute__ ((packed));

struct channel_path_desc_fmt1 {
	u8 flags;
	u8 lsn;
	u8 desc;
	u8 chpid;
	u32:24;
	u8 chpp;
	u32 unused[2];
	u16 chid;
	u32:16;
	u16 mdc;
	u16:13;
	u8 r:1;
	u8 s:1;
	u8 f:1;
	u32 zeros[2];
} __attribute__ ((packed));

struct channel_path;

struct css_chsc_char {
	u64 res;
	u64 : 20;
	u32 secm : 1; /* bit 84 */
	u32 : 1;
	u32 scmc : 1; /* bit 86 */
	u32 : 20;
	u32 scssc : 1;  /* bit 107 */
	u32 scsscf : 1; /* bit 108 */
	u32:7;
	u32 pnso:1; /* bit 116 */
	u32:11;
}__attribute__((packed));

extern struct css_chsc_char css_chsc_characteristics;

struct chsc_ssd_info {
	u8 path_mask;
	u8 fla_valid_mask;
	struct chp_id chpid[8];
	u16 fla[8];
};

struct chsc_ssqd_area {
	struct chsc_header request;
	u16:10;
	u8 ssid:2;
	u8 fmt:4;
	u16 first_sch;
	u16:16;
	u16 last_sch;
	u32:32;
	struct chsc_header response;
	u32:32;
	struct qdio_ssqd_desc qdio_ssqd;
} __packed;

struct chsc_scssc_area {
	struct chsc_header request;
	u16 operation_code;
	u16:16;
	u32:32;
	u32:32;
	u64 summary_indicator_addr;
	u64 subchannel_indicator_addr;
	u32 ks:4;
	u32 kc:4;
	u32:21;
	u32 isc:3;
	u32 word_with_d_bit;
	u32:32;
	struct subchannel_id schid;
	u32 reserved[1004];
	struct chsc_header response;
	u32:32;
} __packed;

struct chsc_scpd {
	struct chsc_header request;
	u32:2;
	u32 m:1;
	u32 c:1;
	u32 fmt:4;
	u32 cssid:8;
	u32:4;
	u32 rfmt:4;
	u32 first_chpid:8;
	u32:24;
	u32 last_chpid:8;
	u32 zeroes1;
	struct chsc_header response;
	u32:32;
	u8 data[0];
} __packed;

struct chsc_sda_area {
	struct chsc_header request;
	u8 :4;
	u8 format:4;
	u8 :8;
	u16 operation_code;
	u32 :32;
	u32 :32;
	u32 operation_data_area[252];
	struct chsc_header response;
	u32 :4;
	u32 format2:4;
	u32 :24;
} __packed __aligned(PAGE_SIZE);

extern int chsc_get_ssd_info(struct subchannel_id schid,
			     struct chsc_ssd_info *ssd);
extern int chsc_determine_css_characteristics(void);
extern int chsc_init(void);
extern void chsc_init_cleanup(void);

int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code);
extern int chsc_enable_facility(int);
struct channel_subsystem;
extern int chsc_secm(struct channel_subsystem *, int);
int __chsc_do_secm(struct channel_subsystem *css, int enable);

int chsc_chp_vary(struct chp_id chpid, int on);
int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
				     int c, int m, void *page);
int chsc_determine_base_channel_path_desc(struct chp_id chpid,
					  struct channel_path_desc *desc);
int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid,
					  struct channel_path_desc_fmt1 *desc);
void chsc_chp_online(struct chp_id chpid);
void chsc_chp_offline(struct chp_id chpid);
int chsc_get_channel_measurement_chars(struct channel_path *chp);
int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd);
int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
	      u64 summary_indicator_addr, u64 subchannel_indicator_addr);
int chsc_error_from_response(int response);

int chsc_siosl(struct subchannel_id schid);

/* Functions and definitions to query storage-class memory. */
struct sale {
	u64 sa;
	u32 p:4;
	u32 op_state:4;
	u32 data_state:4;
	u32 rank:4;
	u32 r:1;
	u32:7;
	u32 rid:8;
	u32:32;
} __packed;

struct chsc_scm_info {
	struct chsc_header request;
	u32:32;
	u64 reqtok;
	u32 reserved1[4];
	struct chsc_header response;
	u64:56;
	u8 rq;
	u32 mbc;
	u64 msa;
	u16 is;
	u16 mmc;
	u32 mci;
	u64 nr_scm_ini;
	u64 nr_scm_unini;
	u32 reserved2[10];
	u64 restok;
	struct sale scmal[248];
} __packed;

int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token);

struct chsc_brinfo_resume_token {
	u64 t1;
	u64 t2;
} __packed;

struct chsc_brinfo_naihdr {
	struct chsc_brinfo_resume_token resume_token;
	u32:32;
	u32 instance;
	u32:24;
	u8 naids;
	u32 reserved[3];
} __packed;

struct chsc_pnso_area {
	struct chsc_header request;
	u8:2;
	u8 m:1;
	u8:5;
	u8:2;
	u8 ssid:2;
	u8 fmt:4;
	u16 sch;
	u8:8;
	u8 cssid;
	u16:16;
	u8 oc;
	u32:24;
	struct chsc_brinfo_resume_token resume_token;
	u32 n:1;
	u32:31;
	u32 reserved[3];
	struct chsc_header response;
	u32:32;
	struct chsc_brinfo_naihdr naihdr;
	union {
		struct qdio_brinfo_entry_l3_ipv6 l3_ipv6[0];
		struct qdio_brinfo_entry_l3_ipv4 l3_ipv4[0];
		struct qdio_brinfo_entry_l2	 l2[0];
	} entries;
} __packed;

int chsc_pnso_brinfo(struct subchannel_id schid,
		struct chsc_pnso_area *brinfo_area,
		struct chsc_brinfo_resume_token resume_token,
		int cnc);

int __init chsc_get_cssid(int idx);

#ifdef CONFIG_SCM_BUS
int scm_update_information(void);
int scm_process_availability_information(void);
#else /* CONFIG_SCM_BUS */
static inline int scm_update_information(void) { return 0; }
static inline int scm_process_availability_information(void) { return 0; }
#endif /* CONFIG_SCM_BUS */


#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef S390_CHSC_H
	3	#define S390_CHSC_H
	4
f86635fa PO	5	#include <linux/types.h>
f86635fa PO	6	#include <linux/device.h>
382b7366	7	#include <asm/css_chars.h>
e5854a58	8	#include <asm/chpid.h>
9d92a7e1 CH	9	#include <asm/chsc.h>
9d92a7e1 CH	10	#include <asm/schid.h>
da5b6cb1	11	#include <asm/qdio.h>
f86635fa	12
fb6958a5 CH	13	#define CHSC_SDA_OC_MSS 0x2
fb6958a5 CH	14
495a5b45 CH	15	#define NR_MEASUREMENT_CHARS 5
	16	struct cmg_chars {
	17	u32 values[NR_MEASUREMENT_CHARS];
0f008aa3	18	} __attribute__ ((packed));
495a5b45 CH	19
	20	#define NR_MEASUREMENT_ENTRIES 8
	21	struct cmg_entry {
	22	u32 values[NR_MEASUREMENT_ENTRIES];
0f008aa3	23	} __attribute__ ((packed));
495a5b45	24
ce322ccd SO	25	struct channel_path_desc_fmt1 {
	26	u8 flags;
	27	u8 lsn;
	28	u8 desc;
	29	u8 chpid;
	30	u32:24;
	31	u8 chpp;
ba54229d PO	32	u32 unused[2];
	33	u16 chid;
	34	u32:16;
ce322ccd SO	35	u16 mdc;
	36	u16:13;
	37	u8 r:1;
	38	u8 s:1;
	39	u8 f:1;
	40	u32 zeros[2];
	41	} __attribute__ ((packed));
	42
e6b6e10a	43	struct channel_path;
1da177e4	44
1da177e4 LT	45	struct css_chsc_char {
1da177e4 LT	46	u64 res;
495a5b45 CH	47	u64 : 20;
	48	u32 secm : 1; /* bit 84 */
	49	u32 : 1;
	50	u32 scmc : 1; /* bit 86 */
	51	u32 : 20;
1da177e4 LT	52	u32 scssc : 1; /* bit 107 */
1da177e4 LT	53	u32 scsscf : 1; /* bit 108 */
1c59a861 EC	54	u32:7;
	55	u32 pnso:1; /* bit 116 */
	56	u32:11;
1da177e4 LT	57	}__attribute__((packed));
1da177e4 LT	58
1da177e4 LT	59	extern struct css_chsc_char css_chsc_characteristics;
1da177e4 LT	60
7ad6a249 PO	61	struct chsc_ssd_info {
	62	u8 path_mask;
	63	u8 fla_valid_mask;
	64	struct chp_id chpid[8];
	65	u16 fla[8];
	66	};
906c9768	67
da5b6cb1 SO	68	struct chsc_ssqd_area {
	69	struct chsc_header request;
	70	u16:10;
	71	u8 ssid:2;
	72	u8 fmt:4;
	73	u16 first_sch;
	74	u16:16;
	75	u16 last_sch;
	76	u32:32;
	77	struct chsc_header response;
	78	u32:32;
	79	struct qdio_ssqd_desc qdio_ssqd;
	80	} __packed;
	81
ca4ba153 SO	82	struct chsc_scssc_area {
	83	struct chsc_header request;
	84	u16 operation_code;
	85	u16:16;
	86	u32:32;
	87	u32:32;
	88	u64 summary_indicator_addr;
	89	u64 subchannel_indicator_addr;
	90	u32 ks:4;
	91	u32 kc:4;
	92	u32:21;
	93	u32 isc:3;
	94	u32 word_with_d_bit;
	95	u32:32;
	96	struct subchannel_id schid;
	97	u32 reserved[1004];
	98	struct chsc_header response;
	99	u32:32;
	100	} __packed;
	101
906c9768 SO	102	struct chsc_scpd {
	103	struct chsc_header request;
	104	u32:2;
	105	u32 m:1;
	106	u32 c:1;
	107	u32 fmt:4;
	108	u32 cssid:8;
	109	u32:4;
	110	u32 rfmt:4;
	111	u32 first_chpid:8;
	112	u32:24;
	113	u32 last_chpid:8;
	114	u32 zeroes1;
	115	struct chsc_header response;
687cb7f2 SO	116	u32:32;
	117	u8 data[0];
	118	} __packed;
906c9768	119
18e22a17 SO	120	struct chsc_sda_area {
	121	struct chsc_header request;
	122	u8 :4;
	123	u8 format:4;
	124	u8 :8;
	125	u16 operation_code;
	126	u32 :32;
	127	u32 :32;
	128	u32 operation_data_area[252];
	129	struct chsc_header response;
	130	u32 :4;
	131	u32 format2:4;
	132	u32 :24;
	133	} __packed __aligned(PAGE_SIZE);
906c9768	134
7ad6a249 PO	135	extern int chsc_get_ssd_info(struct subchannel_id schid,
7ad6a249 PO	136	struct chsc_ssd_info *ssd);
1da177e4	137	extern int chsc_determine_css_characteristics(void);
34aec07c SO	138	extern int chsc_init(void);
34aec07c SO	139	extern void chsc_init_cleanup(void);
1da177e4	140
18e22a17	141	int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code);
fb6958a5	142	extern int chsc_enable_facility(int);
495a5b45 CH	143	struct channel_subsystem;
495a5b45 CH	144	extern int chsc_secm(struct channel_subsystem *, int);
34196f82	145	int __chsc_do_secm(struct channel_subsystem *css, int enable);
fb6958a5	146
e6b6e10a	147	int chsc_chp_vary(struct chp_id chpid, int on);
9d92a7e1	148	int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
906c9768	149	int c, int m, void *page);
9d92a7e1 CH	150	int chsc_determine_base_channel_path_desc(struct chp_id chpid,
9d92a7e1 CH	151	struct channel_path_desc *desc);
ce322ccd SO	152	int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid,
ce322ccd SO	153	struct channel_path_desc_fmt1 *desc);
83b3370c	154	void chsc_chp_online(struct chp_id chpid);
e6b6e10a PO	155	void chsc_chp_offline(struct chp_id chpid);
e6b6e10a PO	156	int chsc_get_channel_measurement_chars(struct channel_path *chp);
da5b6cb1	157	int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd);
ca4ba153 SO	158	int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
ca4ba153 SO	159	u64 summary_indicator_addr, u64 subchannel_indicator_addr);
dae39843 CH	160	int chsc_error_from_response(int response);
dae39843 CH	161
fd0457a6 ME	162	int chsc_siosl(struct subchannel_id schid);
fd0457a6 ME	163
184b08af SO	164	/* Functions and definitions to query storage-class memory. */
	165	struct sale {
	166	u64 sa;
	167	u32 p:4;
	168	u32 op_state:4;
	169	u32 data_state:4;
	170	u32 rank:4;
	171	u32 r:1;
	172	u32:7;
	173	u32 rid:8;
	174	u32:32;
	175	} __packed;
	176
	177	struct chsc_scm_info {
	178	struct chsc_header request;
	179	u32:32;
	180	u64 reqtok;
	181	u32 reserved1[4];
	182	struct chsc_header response;
	183	u64:56;
	184	u8 rq;
	185	u32 mbc;
	186	u64 msa;
	187	u16 is;
	188	u16 mmc;
	189	u32 mci;
	190	u64 nr_scm_ini;
	191	u64 nr_scm_unini;
	192	u32 reserved2[10];
	193	u64 restok;
	194	struct sale scmal[248];
	195	} __packed;
	196
	197	int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token);
	198
1c59a861 EC	199	struct chsc_brinfo_resume_token {
	200	u64 t1;
	201	u64 t2;
	202	} __packed;
	203
	204	struct chsc_brinfo_naihdr {
	205	struct chsc_brinfo_resume_token resume_token;
	206	u32:32;
	207	u32 instance;
	208	u32:24;
	209	u8 naids;
	210	u32 reserved[3];
	211	} __packed;
	212
	213	struct chsc_pnso_area {
	214	struct chsc_header request;
	215	u8:2;
	216	u8 m:1;
	217	u8:5;
	218	u8:2;
	219	u8 ssid:2;
	220	u8 fmt:4;
	221	u16 sch;
	222	u8:8;
	223	u8 cssid;
	224	u16:16;
	225	u8 oc;
	226	u32:24;
	227	struct chsc_brinfo_resume_token resume_token;
	228	u32 n:1;
	229	u32:31;
	230	u32 reserved[3];
	231	struct chsc_header response;
	232	u32:32;
	233	struct chsc_brinfo_naihdr naihdr;
	234	union {
	235	struct qdio_brinfo_entry_l3_ipv6 l3_ipv6[0];
	236	struct qdio_brinfo_entry_l3_ipv4 l3_ipv4[0];
	237	struct qdio_brinfo_entry_l2 l2[0];
	238	} entries;
	239	} __packed;
	240
	241	int chsc_pnso_brinfo(struct subchannel_id schid,
	242	struct chsc_pnso_area *brinfo_area,
	243	struct chsc_brinfo_resume_token resume_token,
	244	int cnc);
	245
e2e0de9b SO	246	int __init chsc_get_cssid(int idx);
e2e0de9b SO	247
40ff4cc0 SO	248	#ifdef CONFIG_SCM_BUS
40ff4cc0 SO	249	int scm_update_information(void);
aebfa669	250	int scm_process_availability_information(void);
40ff4cc0	251	#else /* CONFIG_SCM_BUS */
58fece78	252	static inline int scm_update_information(void) { return 0; }
aebfa669	253	static inline int scm_process_availability_information(void) { return 0; }
40ff4cc0 SO	254	#endif /* CONFIG_SCM_BUS */
	255
	256
1da177e4	257	#endif