cio.h (4e73e0eb633f8a1b5cbf20e7f42c6dbfec1d1ca7) cio.h (62733e5a5a480a893e56fa6133ae90904d857bc4)
1/*
2 * include/asm-s390/cio.h
3 * include/asm-s390x/cio.h
4 *
5 * Common interface for I/O on S/390
6 */
7#ifndef _ASM_S390_CIO_H_
8#define _ASM_S390_CIO_H_
9
10#include <linux/spinlock.h>
11#include <asm/types.h>
12
13#ifdef __KERNEL__
14
15#define LPM_ANYPATH 0xff
16#define __MAX_CSSID 0
17
1/*
2 * include/asm-s390/cio.h
3 * include/asm-s390x/cio.h
4 *
5 * Common interface for I/O on S/390
6 */
7#ifndef _ASM_S390_CIO_H_
8#define _ASM_S390_CIO_H_
9
10#include <linux/spinlock.h>
11#include <asm/types.h>
12
13#ifdef __KERNEL__
14
15#define LPM_ANYPATH 0xff
16#define __MAX_CSSID 0
17
18/**
19 * struct cmd_scsw - command-mode subchannel status word
20 * @key: subchannel key
21 * @sctl: suspend control
22 * @eswf: esw format
23 * @cc: deferred condition code
24 * @fmt: format
25 * @pfch: prefetch
26 * @isic: initial-status interruption control
27 * @alcc: address-limit checking control
28 * @ssi: suppress-suspended interruption
29 * @zcc: zero condition code
30 * @ectl: extended control
31 * @pno: path not operational
32 * @res: reserved
33 * @fctl: function control
34 * @actl: activity control
35 * @stctl: status control
36 * @cpa: channel program address
37 * @dstat: device status
38 * @cstat: subchannel status
39 * @count: residual count
40 */
41struct cmd_scsw {
42 __u32 key : 4;
43 __u32 sctl : 1;
44 __u32 eswf : 1;
45 __u32 cc : 2;
46 __u32 fmt : 1;
47 __u32 pfch : 1;
48 __u32 isic : 1;
49 __u32 alcc : 1;
50 __u32 ssi : 1;
51 __u32 zcc : 1;
52 __u32 ectl : 1;
53 __u32 pno : 1;
54 __u32 res : 1;
55 __u32 fctl : 3;
56 __u32 actl : 7;
57 __u32 stctl : 5;
58 __u32 cpa;
59 __u32 dstat : 8;
60 __u32 cstat : 8;
61 __u32 count : 16;
62} __attribute__ ((packed));
18#include <asm/scsw.h>
63
64/**
19
20/**
65 * struct tm_scsw - transport-mode subchannel status word
66 * @key: subchannel key
67 * @eswf: esw format
68 * @cc: deferred condition code
69 * @fmt: format
70 * @x: IRB-format control
71 * @q: interrogate-complete
72 * @ectl: extended control
73 * @pno: path not operational
74 * @fctl: function control
75 * @actl: activity control
76 * @stctl: status control
77 * @tcw: TCW address
78 * @dstat: device status
79 * @cstat: subchannel status
80 * @fcxs: FCX status
81 * @schxs: subchannel-extended status
82 */
83struct tm_scsw {
84 u32 key:4;
85 u32 :1;
86 u32 eswf:1;
87 u32 cc:2;
88 u32 fmt:3;
89 u32 x:1;
90 u32 q:1;
91 u32 :1;
92 u32 ectl:1;
93 u32 pno:1;
94 u32 :1;
95 u32 fctl:3;
96 u32 actl:7;
97 u32 stctl:5;
98 u32 tcw;
99 u32 dstat:8;
100 u32 cstat:8;
101 u32 fcxs:8;
102 u32 schxs:8;
103} __attribute__ ((packed));
104
105/**
106 * union scsw - subchannel status word
107 * @cmd: command-mode SCSW
108 * @tm: transport-mode SCSW
109 */
110union scsw {
111 struct cmd_scsw cmd;
112 struct tm_scsw tm;
113} __attribute__ ((packed));
114
115int scsw_is_tm(union scsw *scsw);
116u32 scsw_key(union scsw *scsw);
117u32 scsw_eswf(union scsw *scsw);
118u32 scsw_cc(union scsw *scsw);
119u32 scsw_ectl(union scsw *scsw);
120u32 scsw_pno(union scsw *scsw);
121u32 scsw_fctl(union scsw *scsw);
122u32 scsw_actl(union scsw *scsw);
123u32 scsw_stctl(union scsw *scsw);
124u32 scsw_dstat(union scsw *scsw);
125u32 scsw_cstat(union scsw *scsw);
126int scsw_is_solicited(union scsw *scsw);
127int scsw_is_valid_key(union scsw *scsw);
128int scsw_is_valid_eswf(union scsw *scsw);
129int scsw_is_valid_cc(union scsw *scsw);
130int scsw_is_valid_ectl(union scsw *scsw);
131int scsw_is_valid_pno(union scsw *scsw);
132int scsw_is_valid_fctl(union scsw *scsw);
133int scsw_is_valid_actl(union scsw *scsw);
134int scsw_is_valid_stctl(union scsw *scsw);
135int scsw_is_valid_dstat(union scsw *scsw);
136int scsw_is_valid_cstat(union scsw *scsw);
137int scsw_cmd_is_valid_key(union scsw *scsw);
138int scsw_cmd_is_valid_sctl(union scsw *scsw);
139int scsw_cmd_is_valid_eswf(union scsw *scsw);
140int scsw_cmd_is_valid_cc(union scsw *scsw);
141int scsw_cmd_is_valid_fmt(union scsw *scsw);
142int scsw_cmd_is_valid_pfch(union scsw *scsw);
143int scsw_cmd_is_valid_isic(union scsw *scsw);
144int scsw_cmd_is_valid_alcc(union scsw *scsw);
145int scsw_cmd_is_valid_ssi(union scsw *scsw);
146int scsw_cmd_is_valid_zcc(union scsw *scsw);
147int scsw_cmd_is_valid_ectl(union scsw *scsw);
148int scsw_cmd_is_valid_pno(union scsw *scsw);
149int scsw_cmd_is_valid_fctl(union scsw *scsw);
150int scsw_cmd_is_valid_actl(union scsw *scsw);
151int scsw_cmd_is_valid_stctl(union scsw *scsw);
152int scsw_cmd_is_valid_dstat(union scsw *scsw);
153int scsw_cmd_is_valid_cstat(union scsw *scsw);
154int scsw_cmd_is_solicited(union scsw *scsw);
155int scsw_tm_is_valid_key(union scsw *scsw);
156int scsw_tm_is_valid_eswf(union scsw *scsw);
157int scsw_tm_is_valid_cc(union scsw *scsw);
158int scsw_tm_is_valid_fmt(union scsw *scsw);
159int scsw_tm_is_valid_x(union scsw *scsw);
160int scsw_tm_is_valid_q(union scsw *scsw);
161int scsw_tm_is_valid_ectl(union scsw *scsw);
162int scsw_tm_is_valid_pno(union scsw *scsw);
163int scsw_tm_is_valid_fctl(union scsw *scsw);
164int scsw_tm_is_valid_actl(union scsw *scsw);
165int scsw_tm_is_valid_stctl(union scsw *scsw);
166int scsw_tm_is_valid_dstat(union scsw *scsw);
167int scsw_tm_is_valid_cstat(union scsw *scsw);
168int scsw_tm_is_valid_fcxs(union scsw *scsw);
169int scsw_tm_is_valid_schxs(union scsw *scsw);
170int scsw_tm_is_solicited(union scsw *scsw);
171
172#define SCSW_FCTL_CLEAR_FUNC 0x1
173#define SCSW_FCTL_HALT_FUNC 0x2
174#define SCSW_FCTL_START_FUNC 0x4
175
176#define SCSW_ACTL_SUSPENDED 0x1
177#define SCSW_ACTL_DEVACT 0x2
178#define SCSW_ACTL_SCHACT 0x4
179#define SCSW_ACTL_CLEAR_PEND 0x8
180#define SCSW_ACTL_HALT_PEND 0x10
181#define SCSW_ACTL_START_PEND 0x20
182#define SCSW_ACTL_RESUME_PEND 0x40
183
184#define SCSW_STCTL_STATUS_PEND 0x1
185#define SCSW_STCTL_SEC_STATUS 0x2
186#define SCSW_STCTL_PRIM_STATUS 0x4
187#define SCSW_STCTL_INTER_STATUS 0x8
188#define SCSW_STCTL_ALERT_STATUS 0x10
189
190#define DEV_STAT_ATTENTION 0x80
191#define DEV_STAT_STAT_MOD 0x40
192#define DEV_STAT_CU_END 0x20
193#define DEV_STAT_BUSY 0x10
194#define DEV_STAT_CHN_END 0x08
195#define DEV_STAT_DEV_END 0x04
196#define DEV_STAT_UNIT_CHECK 0x02
197#define DEV_STAT_UNIT_EXCEP 0x01
198
199#define SCHN_STAT_PCI 0x80
200#define SCHN_STAT_INCORR_LEN 0x40
201#define SCHN_STAT_PROG_CHECK 0x20
202#define SCHN_STAT_PROT_CHECK 0x10
203#define SCHN_STAT_CHN_DATA_CHK 0x08
204#define SCHN_STAT_CHN_CTRL_CHK 0x04
205#define SCHN_STAT_INTF_CTRL_CHK 0x02
206#define SCHN_STAT_CHAIN_CHECK 0x01
207
208/*
209 * architectured values for first sense byte
210 */
211#define SNS0_CMD_REJECT 0x80
212#define SNS_CMD_REJECT SNS0_CMD_REJEC
213#define SNS0_INTERVENTION_REQ 0x40
214#define SNS0_BUS_OUT_CHECK 0x20
215#define SNS0_EQUIPMENT_CHECK 0x10
216#define SNS0_DATA_CHECK 0x08
217#define SNS0_OVERRUN 0x04
218#define SNS0_INCOMPL_DOMAIN 0x01
219
220/*
221 * architectured values for second sense byte
222 */
223#define SNS1_PERM_ERR 0x80
224#define SNS1_INV_TRACK_FORMAT 0x40
225#define SNS1_EOC 0x20
226#define SNS1_MESSAGE_TO_OPER 0x10
227#define SNS1_NO_REC_FOUND 0x08
228#define SNS1_FILE_PROTECTED 0x04
229#define SNS1_WRITE_INHIBITED 0x02
230#define SNS1_INPRECISE_END 0x01
231
232/*
233 * architectured values for third sense byte
234 */
235#define SNS2_REQ_INH_WRITE 0x80
236#define SNS2_CORRECTABLE 0x40
237#define SNS2_FIRST_LOG_ERR 0x20
238#define SNS2_ENV_DATA_PRESENT 0x10
239#define SNS2_INPRECISE_END 0x04
240
241/**
242 * struct ccw1 - channel command word
243 * @cmd_code: command code
244 * @flags: flags, like IDA adressing, etc.
245 * @count: byte count
246 * @cda: data address
247 *
248 * The ccw is the basic structure to build channel programs that perform
249 * operations with the device or the control unit. Only Format-1 channel

--- 267 unchanged lines hidden --- 		21 * struct ccw1 - channel command word
22 * @cmd_code: command code
23 * @flags: flags, like IDA adressing, etc.
24 * @count: byte count
25 * @cda: data address
26 *
27 * The ccw is the basic structure to build channel programs that perform
28 * operations with the device or the control unit. Only Format-1 channel

--- 267 unchanged lines hidden ---