xref: /qemu/include/hw/s390x/ioinst.h (revision 2df59b73)
1 /*
2  * S/390 channel I/O instructions
3  *
4  * Copyright 2012 IBM Corp.
5  * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
6  *
7  * This work is licensed under the terms of the GNU GPL, version 2 or (at
8  * your option) any later version. See the COPYING file in the top-level
9  * directory.
10 */
11 
12 #ifndef S390X_IOINST_H
13 #define S390X_IOINST_H
14 
15 /*
16  * Channel I/O related definitions, as defined in the Principles
17  * Of Operation (and taken from the Linux implementation).
18  */
19 
20 /* subchannel status word (command mode only) */
21 typedef struct SCSW {
22     uint16_t flags;
23     uint16_t ctrl;
24     uint32_t cpa;
25     uint8_t dstat;
26     uint8_t cstat;
27     uint16_t count;
28 } SCSW;
29 QEMU_BUILD_BUG_MSG(sizeof(SCSW) != 12, "size of SCSW is wrong");
30 
31 #define SCSW_FLAGS_MASK_KEY 0xf000
32 #define SCSW_FLAGS_MASK_SCTL 0x0800
33 #define SCSW_FLAGS_MASK_ESWF 0x0400
34 #define SCSW_FLAGS_MASK_CC 0x0300
35 #define SCSW_FLAGS_MASK_FMT 0x0080
36 #define SCSW_FLAGS_MASK_PFCH 0x0040
37 #define SCSW_FLAGS_MASK_ISIC 0x0020
38 #define SCSW_FLAGS_MASK_ALCC 0x0010
39 #define SCSW_FLAGS_MASK_SSI 0x0008
40 #define SCSW_FLAGS_MASK_ZCC 0x0004
41 #define SCSW_FLAGS_MASK_ECTL 0x0002
42 #define SCSW_FLAGS_MASK_PNO 0x0001
43 
44 #define SCSW_CTRL_MASK_FCTL 0x7000
45 #define SCSW_CTRL_MASK_ACTL 0x0fe0
46 #define SCSW_CTRL_MASK_STCTL 0x001f
47 
48 #define SCSW_FCTL_CLEAR_FUNC 0x1000
49 #define SCSW_FCTL_HALT_FUNC 0x2000
50 #define SCSW_FCTL_START_FUNC 0x4000
51 
52 #define SCSW_ACTL_SUSP 0x0020
53 #define SCSW_ACTL_DEVICE_ACTIVE 0x0040
54 #define SCSW_ACTL_SUBCH_ACTIVE 0x0080
55 #define SCSW_ACTL_CLEAR_PEND 0x0100
56 #define SCSW_ACTL_HALT_PEND  0x0200
57 #define SCSW_ACTL_START_PEND 0x0400
58 #define SCSW_ACTL_RESUME_PEND 0x0800
59 
60 #define SCSW_STCTL_STATUS_PEND 0x0001
61 #define SCSW_STCTL_SECONDARY 0x0002
62 #define SCSW_STCTL_PRIMARY 0x0004
63 #define SCSW_STCTL_INTERMEDIATE 0x0008
64 #define SCSW_STCTL_ALERT 0x0010
65 
66 #define SCSW_DSTAT_ATTENTION     0x80
67 #define SCSW_DSTAT_STAT_MOD      0x40
68 #define SCSW_DSTAT_CU_END        0x20
69 #define SCSW_DSTAT_BUSY          0x10
70 #define SCSW_DSTAT_CHANNEL_END   0x08
71 #define SCSW_DSTAT_DEVICE_END    0x04
72 #define SCSW_DSTAT_UNIT_CHECK    0x02
73 #define SCSW_DSTAT_UNIT_EXCEP    0x01
74 
75 #define SCSW_CSTAT_PCI           0x80
76 #define SCSW_CSTAT_INCORR_LEN    0x40
77 #define SCSW_CSTAT_PROG_CHECK    0x20
78 #define SCSW_CSTAT_PROT_CHECK    0x10
79 #define SCSW_CSTAT_DATA_CHECK    0x08
80 #define SCSW_CSTAT_CHN_CTRL_CHK  0x04
81 #define SCSW_CSTAT_INTF_CTRL_CHK 0x02
82 #define SCSW_CSTAT_CHAIN_CHECK   0x01
83 
84 /* path management control word */
85 typedef struct PMCW {
86     uint32_t intparm;
87     uint16_t flags;
88     uint16_t devno;
89     uint8_t  lpm;
90     uint8_t  pnom;
91     uint8_t  lpum;
92     uint8_t  pim;
93     uint16_t mbi;
94     uint8_t  pom;
95     uint8_t  pam;
96     uint8_t  chpid[8];
97     uint32_t chars;
98 } PMCW;
99 QEMU_BUILD_BUG_MSG(sizeof(PMCW) != 28, "size of PMCW is wrong");
100 
101 #define PMCW_FLAGS_MASK_QF 0x8000
102 #define PMCW_FLAGS_MASK_W 0x4000
103 #define PMCW_FLAGS_MASK_ISC 0x3800
104 #define PMCW_FLAGS_MASK_ENA 0x0080
105 #define PMCW_FLAGS_MASK_LM 0x0060
106 #define PMCW_FLAGS_MASK_MME 0x0018
107 #define PMCW_FLAGS_MASK_MP 0x0004
108 #define PMCW_FLAGS_MASK_TF 0x0002
109 #define PMCW_FLAGS_MASK_DNV 0x0001
110 #define PMCW_FLAGS_MASK_INVALID 0xc300
111 
112 #define PMCW_CHARS_MASK_ST 0x00e00000
113 #define PMCW_CHARS_MASK_MBFC 0x00000004
114 #define PMCW_CHARS_MASK_XMWME 0x00000002
115 #define PMCW_CHARS_MASK_CSENSE 0x00000001
116 #define PMCW_CHARS_MASK_INVALID 0xff1ffff8
117 
118 /* subchannel information block */
119 typedef struct SCHIB {
120     PMCW pmcw;
121     SCSW scsw;
122     uint64_t mba;
123     uint8_t mda[4];
124 } QEMU_PACKED SCHIB;
125 
126 /* format-0 extended-status word */
127 typedef struct ESW {
128     uint32_t word0;      /* subchannel logout for format 0 */
129     uint32_t erw;
130     uint64_t word2;     /* failing-storage address for format 0 */
131     uint32_t word4;     /* secondary-CCW address for format 0 */
132 } QEMU_PACKED ESW;
133 
134 #define ESW_ERW_SENSE 0x01000000
135 
136 /* interruption response block */
137 typedef struct IRB {
138     SCSW scsw;
139     ESW esw;
140     uint32_t ecw[8];
141     uint32_t emw[8];
142 } IRB;
143 QEMU_BUILD_BUG_MSG(sizeof(IRB) != 96, "size of IRB is wrong");
144 
145 /* operation request block */
146 typedef struct ORB {
147     uint32_t intparm;
148     uint16_t ctrl0;
149     uint8_t lpm;
150     uint8_t ctrl1;
151     uint32_t cpa;
152 } ORB;
153 QEMU_BUILD_BUG_MSG(sizeof(ORB) != 12, "size of ORB is wrong");
154 
155 #define ORB_CTRL0_MASK_KEY 0xf000
156 #define ORB_CTRL0_MASK_SPND 0x0800
157 #define ORB_CTRL0_MASK_STR 0x0400
158 #define ORB_CTRL0_MASK_MOD 0x0200
159 #define ORB_CTRL0_MASK_SYNC 0x0100
160 #define ORB_CTRL0_MASK_FMT 0x0080
161 #define ORB_CTRL0_MASK_PFCH 0x0040
162 #define ORB_CTRL0_MASK_ISIC 0x0020
163 #define ORB_CTRL0_MASK_ALCC 0x0010
164 #define ORB_CTRL0_MASK_SSIC 0x0008
165 #define ORB_CTRL0_MASK_C64 0x0002
166 #define ORB_CTRL0_MASK_I2K 0x0001
167 #define ORB_CTRL0_MASK_INVALID 0x0004
168 
169 #define ORB_CTRL1_MASK_ILS 0x80
170 #define ORB_CTRL1_MASK_MIDAW 0x40
171 #define ORB_CTRL1_MASK_ORBX 0x01
172 #define ORB_CTRL1_MASK_INVALID 0x3e
173 
174 /* channel command word (type 0) */
175 typedef struct CCW0 {
176         uint8_t cmd_code;
177         uint8_t cda0;
178         uint16_t cda1;
179         uint8_t flags;
180         uint8_t reserved;
181         uint16_t count;
182 } CCW0;
183 QEMU_BUILD_BUG_MSG(sizeof(CCW0) != 8, "size of CCW0 is wrong");
184 
185 /* channel command word (type 1) */
186 typedef struct CCW1 {
187     uint8_t cmd_code;
188     uint8_t flags;
189     uint16_t count;
190     uint32_t cda;
191 } CCW1;
192 QEMU_BUILD_BUG_MSG(sizeof(CCW1) != 8, "size of CCW1 is wrong");
193 
194 #define CCW_FLAG_DC              0x80
195 #define CCW_FLAG_CC              0x40
196 #define CCW_FLAG_SLI             0x20
197 #define CCW_FLAG_SKIP            0x10
198 #define CCW_FLAG_PCI             0x08
199 #define CCW_FLAG_IDA             0x04
200 #define CCW_FLAG_SUSPEND         0x02
201 #define CCW_FLAG_MIDA            0x01
202 
203 #define CCW_CMD_NOOP             0x03
204 #define CCW_CMD_BASIC_SENSE      0x04
205 #define CCW_CMD_TIC              0x08
206 #define CCW_CMD_SENSE_ID         0xe4
207 
208 typedef struct CRW {
209     uint16_t flags;
210     uint16_t rsid;
211 } CRW;
212 QEMU_BUILD_BUG_MSG(sizeof(CRW) != 4, "size of CRW is wrong");
213 
214 #define CRW_FLAGS_MASK_S 0x4000
215 #define CRW_FLAGS_MASK_R 0x2000
216 #define CRW_FLAGS_MASK_C 0x1000
217 #define CRW_FLAGS_MASK_RSC 0x0f00
218 #define CRW_FLAGS_MASK_A 0x0080
219 #define CRW_FLAGS_MASK_ERC 0x003f
220 
221 #define CRW_ERC_EVENT    0x00 /* event information pending */
222 #define CRW_ERC_AVAIL    0x01 /* available */
223 #define CRW_ERC_INIT     0x02 /* initialized */
224 #define CRW_ERC_TERROR   0x03 /* temporary error */
225 #define CRW_ERC_IPI      0x04 /* installed parm initialized */
226 #define CRW_ERC_TERM     0x05 /* terminal */
227 #define CRW_ERC_PERRN    0x06 /* perm. error, facility not init */
228 #define CRW_ERC_PERRI    0x07 /* perm. error, facility init */
229 #define CRW_ERC_PMOD     0x08 /* installed parameters modified */
230 #define CRW_ERC_IPR      0x0A /* installed parameters restored */
231 
232 #define CRW_RSC_SUBCH 0x3
233 #define CRW_RSC_CHP   0x4
234 #define CRW_RSC_CSS   0xb
235 
236 /* I/O interruption code */
237 typedef struct IOIntCode {
238     uint32_t subsys_id;
239     uint32_t intparm;
240     uint32_t interrupt_id;
241 } QEMU_PACKED IOIntCode;
242 
243 /* schid disintegration */
244 #define IOINST_SCHID_ONE(_schid)   ((_schid & 0x00010000) >> 16)
245 #define IOINST_SCHID_M(_schid)     ((_schid & 0x00080000) >> 19)
246 #define IOINST_SCHID_CSSID(_schid) ((_schid & 0xff000000) >> 24)
247 #define IOINST_SCHID_SSID(_schid)  ((_schid & 0x00060000) >> 17)
248 #define IOINST_SCHID_NR(_schid)    (_schid & 0x0000ffff)
249 
250 #define IO_INT_WORD_ISC(_int_word) ((_int_word & 0x38000000) >> 27)
251 #define ISC_TO_ISC_BITS(_isc)      ((0x80 >> _isc) << 24)
252 
253 #define IO_INT_WORD_AI 0x80000000
254 
255 int ioinst_disassemble_sch_ident(uint32_t value, int *m, int *cssid, int *ssid,
256                                  int *schid);
257 
258 #endif
259