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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef S390_CHSC_H
2#define S390_CHSC_H
3
Peter Oberparleiterf86635f2007-04-27 16:01:26 +02004#include <linux/types.h>
5#include <linux/device.h>
Sebastian Ott382b7362012-08-28 16:43:36 +02006#include <asm/css_chars.h>
Peter Oberparleitere5854a52007-04-27 16:01:31 +02007#include <asm/chpid.h>
Cornelia Huck9d92a7e2008-07-14 09:59:05 +02008#include <asm/chsc.h>
9#include <asm/schid.h>
Peter Oberparleiterf86635f2007-04-27 16:01:26 +020010
Cornelia Huckfb6958a2006-01-06 00:19:25 -080011#define CHSC_SDA_OC_MSS 0x2
12
Linus Torvalds1da177e2005-04-16 15:20:36 -070013struct chsc_header {
14 u16 length;
15 u16 code;
Peter Oberparleiter0f008aa2007-02-05 21:17:40 +010016} __attribute__ ((packed));
Linus Torvalds1da177e2005-04-16 15:20:36 -070017
Cornelia Huck495a5b42006-03-24 03:15:14 -080018#define NR_MEASUREMENT_CHARS 5
19struct cmg_chars {
20 u32 values[NR_MEASUREMENT_CHARS];
Peter Oberparleiter0f008aa2007-02-05 21:17:40 +010021} __attribute__ ((packed));
Cornelia Huck495a5b42006-03-24 03:15:14 -080022
23#define NR_MEASUREMENT_ENTRIES 8
24struct cmg_entry {
25 u32 values[NR_MEASUREMENT_ENTRIES];
Peter Oberparleiter0f008aa2007-02-05 21:17:40 +010026} __attribute__ ((packed));
Cornelia Huck495a5b42006-03-24 03:15:14 -080027
Linus Torvalds1da177e2005-04-16 15:20:36 -070028struct channel_path_desc {
29 u8 flags;
30 u8 lsn;
31 u8 desc;
32 u8 chpid;
33 u8 swla;
34 u8 zeroes;
35 u8 chla;
36 u8 chpp;
Peter Oberparleiter0f008aa2007-02-05 21:17:40 +010037} __attribute__ ((packed));
Linus Torvalds1da177e2005-04-16 15:20:36 -070038
Sebastian Ottce322cc2011-01-05 12:47:56 +010039struct channel_path_desc_fmt1 {
40 u8 flags;
41 u8 lsn;
42 u8 desc;
43 u8 chpid;
44 u32:24;
45 u8 chpp;
46 u32 unused[3];
47 u16 mdc;
48 u16:13;
49 u8 r:1;
50 u8 s:1;
51 u8 f:1;
52 u32 zeros[2];
53} __attribute__ ((packed));
54
Peter Oberparleitere6b6e102007-04-27 16:01:28 +020055struct channel_path;
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
Linus Torvalds1da177e2005-04-16 15:20:36 -070057struct css_chsc_char {
58 u64 res;
Cornelia Huck495a5b42006-03-24 03:15:14 -080059 u64 : 20;
60 u32 secm : 1; /* bit 84 */
61 u32 : 1;
62 u32 scmc : 1; /* bit 86 */
63 u32 : 20;
Linus Torvalds1da177e2005-04-16 15:20:36 -070064 u32 scssc : 1; /* bit 107 */
65 u32 scsscf : 1; /* bit 108 */
66 u32 : 19;
67}__attribute__((packed));
68
Linus Torvalds1da177e2005-04-16 15:20:36 -070069extern struct css_chsc_char css_chsc_characteristics;
70
Peter Oberparleiter7ad6a242007-04-27 16:01:35 +020071struct chsc_ssd_info {
72 u8 path_mask;
73 u8 fla_valid_mask;
74 struct chp_id chpid[8];
75 u16 fla[8];
76};
Sebastian Ott906c9762010-10-25 16:10:30 +020077
78struct chsc_scpd {
79 struct chsc_header request;
80 u32:2;
81 u32 m:1;
82 u32 c:1;
83 u32 fmt:4;
84 u32 cssid:8;
85 u32:4;
86 u32 rfmt:4;
87 u32 first_chpid:8;
88 u32:24;
89 u32 last_chpid:8;
90 u32 zeroes1;
91 struct chsc_header response;
92 u8 data[PAGE_SIZE - 20];
93} __attribute__ ((packed));
94
95
Peter Oberparleiter7ad6a242007-04-27 16:01:35 +020096extern int chsc_get_ssd_info(struct subchannel_id schid,
97 struct chsc_ssd_info *ssd);
Linus Torvalds1da177e2005-04-16 15:20:36 -070098extern int chsc_determine_css_characteristics(void);
Sebastian Ott34aec072010-10-25 16:10:28 +020099extern int chsc_init(void);
100extern void chsc_init_cleanup(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101
Cornelia Huckfb6958a2006-01-06 00:19:25 -0800102extern int chsc_enable_facility(int);
Cornelia Huck495a5b42006-03-24 03:15:14 -0800103struct channel_subsystem;
104extern int chsc_secm(struct channel_subsystem *, int);
Sebastian Ott34196f82010-10-25 16:10:29 +0200105int __chsc_do_secm(struct channel_subsystem *css, int enable);
Cornelia Huckfb6958a2006-01-06 00:19:25 -0800106
Peter Oberparleitere6b6e102007-04-27 16:01:28 +0200107int chsc_chp_vary(struct chp_id chpid, int on);
Cornelia Huck9d92a7e2008-07-14 09:59:05 +0200108int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
Sebastian Ott906c9762010-10-25 16:10:30 +0200109 int c, int m, void *page);
Cornelia Huck9d92a7e2008-07-14 09:59:05 +0200110int chsc_determine_base_channel_path_desc(struct chp_id chpid,
111 struct channel_path_desc *desc);
Sebastian Ottce322cc2011-01-05 12:47:56 +0100112int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid,
113 struct channel_path_desc_fmt1 *desc);
Peter Oberparleiter83b33702007-04-27 16:01:34 +0200114void chsc_chp_online(struct chp_id chpid);
Peter Oberparleitere6b6e102007-04-27 16:01:28 +0200115void chsc_chp_offline(struct chp_id chpid);
116int chsc_get_channel_measurement_chars(struct channel_path *chp);
Cornelia Hucka28c6942006-01-06 00:19:23 -0800117
Cornelia Huckdae39842008-07-17 17:16:47 +0200118int chsc_error_from_response(int response);
119
Michael Ernstfd0457a2010-08-09 18:12:50 +0200120int chsc_siosl(struct subchannel_id schid);
121
Sebastian Ott184b08a2012-08-28 16:45:42 +0200122/* Functions and definitions to query storage-class memory. */
123struct sale {
124 u64 sa;
125 u32 p:4;
126 u32 op_state:4;
127 u32 data_state:4;
128 u32 rank:4;
129 u32 r:1;
130 u32:7;
131 u32 rid:8;
132 u32:32;
133} __packed;
134
135struct chsc_scm_info {
136 struct chsc_header request;
137 u32:32;
138 u64 reqtok;
139 u32 reserved1[4];
140 struct chsc_header response;
141 u64:56;
142 u8 rq;
143 u32 mbc;
144 u64 msa;
145 u16 is;
146 u16 mmc;
147 u32 mci;
148 u64 nr_scm_ini;
149 u64 nr_scm_unini;
150 u32 reserved2[10];
151 u64 restok;
152 struct sale scmal[248];
153} __packed;
154
155int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token);
156
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157#endif