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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 | 2 | /* |
7441b062 | 3 | * Copyright IBM Corp. 1999,2012 |
1da177e4 | 4 | * |
62b74942 MH |
5 | * Author(s): Martin Peschke <mpeschke@de.ibm.com> |
6 | * Martin Schwidefsky <schwidefsky@de.ibm.com> | |
1da177e4 LT |
7 | */ |
8 | ||
9 | #ifndef __SCLP_H__ | |
10 | #define __SCLP_H__ | |
11 | ||
12 | #include <linux/types.h> | |
13 | #include <linux/list.h> | |
ab14de6c | 14 | #include <asm/sclp.h> |
1da177e4 LT |
15 | #include <asm/ebcdic.h> |
16 | ||
17 | /* maximum number of pages concerning our own memory management */ | |
18 | #define MAX_KMEM_PAGES (sizeof(unsigned long) << 3) | |
25b41a7b | 19 | #define SCLP_CONSOLE_PAGES 6 |
1da177e4 | 20 | |
3fa7ee88 SO |
21 | #define SCLP_EVTYP_MASK(T) (1U << (32 - (T))) |
22 | ||
6d4740c8 SH |
23 | #define EVTYP_OPCMD 0x01 |
24 | #define EVTYP_MSG 0x02 | |
3fa7ee88 | 25 | #define EVTYP_CONFMGMDATA 0x04 |
8f933b10 | 26 | #define EVTYP_DIAG_TEST 0x07 |
6d4740c8 SH |
27 | #define EVTYP_STATECHANGE 0x08 |
28 | #define EVTYP_PMSGCMD 0x09 | |
3fa7ee88 SO |
29 | #define EVTYP_ASYNC 0x0A |
30 | #define EVTYP_CTLPROGIDENT 0x0B | |
12283a40 | 31 | #define EVTYP_ERRNOTIFY 0x18 |
6d4740c8 SH |
32 | #define EVTYP_VT220MSG 0x1A |
33 | #define EVTYP_SDIAS 0x1C | |
3fa7ee88 | 34 | #define EVTYP_SIGQUIESCE 0x1D |
7eb9d5be | 35 | #define EVTYP_OCF 0x1E |
6d4740c8 | 36 | |
3fa7ee88 SO |
37 | #define EVTYP_OPCMD_MASK SCLP_EVTYP_MASK(EVTYP_OPCMD) |
38 | #define EVTYP_MSG_MASK SCLP_EVTYP_MASK(EVTYP_MSG) | |
39 | #define EVTYP_CONFMGMDATA_MASK SCLP_EVTYP_MASK(EVTYP_CONFMGMDATA) | |
40 | #define EVTYP_DIAG_TEST_MASK SCLP_EVTYP_MASK(EVTYP_DIAG_TEST) | |
41 | #define EVTYP_STATECHANGE_MASK SCLP_EVTYP_MASK(EVTYP_STATECHANGE) | |
42 | #define EVTYP_PMSGCMD_MASK SCLP_EVTYP_MASK(EVTYP_PMSGCMD) | |
43 | #define EVTYP_ASYNC_MASK SCLP_EVTYP_MASK(EVTYP_ASYNC) | |
44 | #define EVTYP_CTLPROGIDENT_MASK SCLP_EVTYP_MASK(EVTYP_CTLPROGIDENT) | |
45 | #define EVTYP_ERRNOTIFY_MASK SCLP_EVTYP_MASK(EVTYP_ERRNOTIFY) | |
46 | #define EVTYP_VT220MSG_MASK SCLP_EVTYP_MASK(EVTYP_VT220MSG) | |
47 | #define EVTYP_SDIAS_MASK SCLP_EVTYP_MASK(EVTYP_SDIAS) | |
48 | #define EVTYP_SIGQUIESCE_MASK SCLP_EVTYP_MASK(EVTYP_SIGQUIESCE) | |
49 | #define EVTYP_OCF_MASK SCLP_EVTYP_MASK(EVTYP_OCF) | |
6d4740c8 SH |
50 | |
51 | #define GNRLMSGFLGS_DOM 0x8000 | |
52 | #define GNRLMSGFLGS_SNDALRM 0x4000 | |
53 | #define GNRLMSGFLGS_HOLDMSG 0x2000 | |
54 | ||
55 | #define LNTPFLGS_CNTLTEXT 0x8000 | |
56 | #define LNTPFLGS_LABELTEXT 0x4000 | |
57 | #define LNTPFLGS_DATATEXT 0x2000 | |
58 | #define LNTPFLGS_ENDTEXT 0x1000 | |
59 | #define LNTPFLGS_PROMPTTEXT 0x0800 | |
1da177e4 LT |
60 | |
61 | typedef unsigned int sclp_cmdw_t; | |
62 | ||
af51160e | 63 | #define SCLP_CMDW_READ_CPU_INFO 0x00010001 |
ab14de6c HC |
64 | #define SCLP_CMDW_READ_EVENT_DATA 0x00770005 |
65 | #define SCLP_CMDW_WRITE_EVENT_DATA 0x00760005 | |
66 | #define SCLP_CMDW_WRITE_EVENT_MASK 0x00780005 | |
1da177e4 LT |
67 | |
68 | #define GDS_ID_MDSMU 0x1310 | |
6d4740c8 SH |
69 | #define GDS_ID_MDSROUTEINFO 0x1311 |
70 | #define GDS_ID_AGUNWRKCORR 0x1549 | |
71 | #define GDS_ID_SNACONDREPORT 0x1532 | |
1da177e4 | 72 | #define GDS_ID_CPMSU 0x1212 |
6d4740c8 SH |
73 | #define GDS_ID_ROUTTARGINSTR 0x154D |
74 | #define GDS_ID_OPREQ 0x8070 | |
75 | #define GDS_ID_TEXTCMD 0x1320 | |
1da177e4 | 76 | |
6d4740c8 | 77 | #define GDS_KEY_SELFDEFTEXTMSG 0x31 |
1da177e4 | 78 | |
62b74942 MH |
79 | enum sclp_pm_event { |
80 | SCLP_PM_EVENT_FREEZE, | |
81 | SCLP_PM_EVENT_THAW, | |
82 | SCLP_PM_EVENT_RESTORE, | |
83 | }; | |
84 | ||
85 | #define SCLP_PANIC_PRIO 1 | |
86 | #define SCLP_PANIC_PRIO_CLIENT 0 | |
87 | ||
1da177e4 LT |
88 | typedef u32 sccb_mask_t; /* ATTENTION: assumes 32bit mask !!! */ |
89 | ||
05dd2530 HC |
90 | struct sccb_header { |
91 | u16 length; | |
92 | u8 function_code; | |
93 | u8 control_mask[3]; | |
94 | u16 response_code; | |
95 | } __attribute__((packed)); | |
96 | ||
cd183459 HG |
97 | struct init_sccb { |
98 | struct sccb_header header; | |
99 | u16 _reserved; | |
100 | u16 mask_length; | |
101 | sccb_mask_t receive_mask; | |
102 | sccb_mask_t send_mask; | |
103 | sccb_mask_t sclp_receive_mask; | |
104 | sccb_mask_t sclp_send_mask; | |
105 | } __attribute__((packed)); | |
106 | ||
af51160e HC |
107 | struct read_cpu_info_sccb { |
108 | struct sccb_header header; | |
109 | u16 nr_configured; | |
110 | u16 offset_configured; | |
111 | u16 nr_standby; | |
112 | u16 offset_standby; | |
113 | u8 reserved[4096 - 16]; | |
114 | } __attribute__((packed, aligned(PAGE_SIZE))); | |
115 | ||
116 | static inline void sclp_fill_core_info(struct sclp_core_info *info, | |
117 | struct read_cpu_info_sccb *sccb) | |
118 | { | |
119 | char *page = (char *) sccb; | |
120 | ||
121 | memset(info, 0, sizeof(*info)); | |
122 | info->configured = sccb->nr_configured; | |
123 | info->standby = sccb->nr_standby; | |
124 | info->combined = sccb->nr_configured + sccb->nr_standby; | |
125 | memcpy(&info->core, page + sccb->offset_configured, | |
126 | info->combined * sizeof(struct sclp_core_entry)); | |
127 | } | |
128 | ||
78335a30 DH |
129 | #define SCLP_HAS_CHP_INFO (sclp.facilities & 0x8000000000000000ULL) |
130 | #define SCLP_HAS_CHP_RECONFIG (sclp.facilities & 0x2000000000000000ULL) | |
131 | #define SCLP_HAS_CPU_INFO (sclp.facilities & 0x0800000000000000ULL) | |
132 | #define SCLP_HAS_CPU_RECONFIG (sclp.facilities & 0x0400000000000000ULL) | |
133 | #define SCLP_HAS_PCI_RECONFIG (sclp.facilities & 0x0000000040000000ULL) | |
83119ad4 | 134 | |
c114728a | 135 | |
1da177e4 LT |
136 | struct gds_subvector { |
137 | u8 length; | |
138 | u8 key; | |
139 | } __attribute__((packed)); | |
140 | ||
141 | struct gds_vector { | |
142 | u16 length; | |
143 | u16 gds_id; | |
144 | } __attribute__((packed)); | |
145 | ||
146 | struct evbuf_header { | |
147 | u16 length; | |
148 | u8 type; | |
149 | u8 flags; | |
150 | u16 _reserved; | |
151 | } __attribute__((packed)); | |
152 | ||
153 | struct sclp_req { | |
154 | struct list_head list; /* list_head for request queueing. */ | |
155 | sclp_cmdw_t command; /* sclp command to execute */ | |
156 | void *sccb; /* pointer to the sccb to execute */ | |
157 | char status; /* status of this request */ | |
158 | int start_count; /* number of SVCs done for this req */ | |
159 | /* Callback that is called after reaching final status. */ | |
160 | void (*callback)(struct sclp_req *, void *data); | |
161 | void *callback_data; | |
9f0128f9 GS |
162 | int queue_timeout; /* request queue timeout (sec), set by |
163 | caller of sclp_add_request(), if | |
164 | needed */ | |
165 | /* Internal fields */ | |
166 | unsigned long queue_expires; /* request queue timeout (jiffies) */ | |
1da177e4 LT |
167 | }; |
168 | ||
169 | #define SCLP_REQ_FILLED 0x00 /* request is ready to be processed */ | |
170 | #define SCLP_REQ_QUEUED 0x01 /* request is queued to be processed */ | |
171 | #define SCLP_REQ_RUNNING 0x02 /* request is currently running */ | |
172 | #define SCLP_REQ_DONE 0x03 /* request is completed successfully */ | |
173 | #define SCLP_REQ_FAILED 0x05 /* request is finally failed */ | |
9f0128f9 GS |
174 | #define SCLP_REQ_QUEUED_TIMEOUT 0x06 /* request on queue timed out */ |
175 | ||
176 | #define SCLP_QUEUE_INTERVAL 5 /* timeout interval for request queue */ | |
1da177e4 LT |
177 | |
178 | /* function pointers that a high level driver has to use for registration */ | |
179 | /* of some routines it wants to be called from the low level driver */ | |
180 | struct sclp_register { | |
181 | struct list_head list; | |
d082d3ce | 182 | /* User wants to receive: */ |
1da177e4 | 183 | sccb_mask_t receive_mask; |
d082d3ce | 184 | /* User wants to send: */ |
1da177e4 | 185 | sccb_mask_t send_mask; |
d082d3ce | 186 | /* H/W can receive: */ |
1da177e4 | 187 | sccb_mask_t sclp_receive_mask; |
d082d3ce | 188 | /* H/W can send: */ |
1da177e4 LT |
189 | sccb_mask_t sclp_send_mask; |
190 | /* called if event type availability changes */ | |
191 | void (*state_change_fn)(struct sclp_register *); | |
192 | /* called for events in cp_receive_mask/sclp_receive_mask */ | |
193 | void (*receiver_fn)(struct evbuf_header *); | |
62b74942 MH |
194 | /* called for power management events */ |
195 | void (*pm_event_fn)(struct sclp_register *, enum sclp_pm_event); | |
196 | /* pm event posted flag */ | |
197 | int pm_event_posted; | |
1da177e4 LT |
198 | }; |
199 | ||
200 | /* externals from sclp.c */ | |
201 | int sclp_add_request(struct sclp_req *req); | |
202 | void sclp_sync_wait(void); | |
203 | int sclp_register(struct sclp_register *reg); | |
204 | void sclp_unregister(struct sclp_register *reg); | |
205 | int sclp_remove_processed(struct sccb_header *sccb); | |
206 | int sclp_deactivate(void); | |
207 | int sclp_reactivate(void); | |
d475f942 | 208 | int sclp_sync_request(sclp_cmdw_t command, void *sccb); |
9f0128f9 | 209 | int sclp_sync_request_timeout(sclp_cmdw_t command, void *sccb, int timeout); |
1da177e4 | 210 | |
763968e2 HC |
211 | int sclp_sdias_init(void); |
212 | void sclp_sdias_exit(void); | |
213 | ||
76fdf141 HC |
214 | enum { |
215 | sclp_init_state_uninitialized, | |
216 | sclp_init_state_initializing, | |
217 | sclp_init_state_initialized | |
218 | }; | |
219 | ||
220 | extern int sclp_init_state; | |
25b41a7b MS |
221 | extern int sclp_console_pages; |
222 | extern int sclp_console_drop; | |
223 | extern unsigned long sclp_console_full; | |
224 | ||
d5ab7a34 HC |
225 | extern char sclp_early_sccb[PAGE_SIZE]; |
226 | ||
227 | void sclp_early_wait_irq(void); | |
d5ab7a34 HC |
228 | int sclp_early_cmd(sclp_cmdw_t cmd, void *sccb); |
229 | unsigned int sclp_early_con_check_linemode(struct init_sccb *sccb); | |
230 | int sclp_early_set_event_mask(struct init_sccb *sccb, | |
231 | unsigned long receive_mask, | |
232 | unsigned long send_mask); | |
233 | ||
1da177e4 LT |
234 | /* useful inlines */ |
235 | ||
d5ab7a34 HC |
236 | /* Perform service call. Return 0 on success, non-zero otherwise. */ |
237 | static inline int sclp_service_call(sclp_cmdw_t command, void *sccb) | |
238 | { | |
239 | int cc = 4; /* Initialize for program check handling */ | |
240 | ||
241 | asm volatile( | |
242 | "0: .insn rre,0xb2200000,%1,%2\n" /* servc %1,%2 */ | |
243 | "1: ipm %0\n" | |
244 | " srl %0,28\n" | |
245 | "2:\n" | |
246 | EX_TABLE(0b, 2b) | |
247 | EX_TABLE(1b, 2b) | |
248 | : "+&d" (cc) : "d" (command), "a" ((unsigned long)sccb) | |
249 | : "cc", "memory"); | |
250 | if (cc == 4) | |
251 | return -EINVAL; | |
252 | if (cc == 3) | |
253 | return -EIO; | |
254 | if (cc == 2) | |
255 | return -EBUSY; | |
256 | return 0; | |
257 | } | |
258 | ||
1da177e4 LT |
259 | /* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */ |
260 | /* translate single character from ASCII to EBCDIC */ | |
261 | static inline unsigned char | |
262 | sclp_ascebc(unsigned char ch) | |
263 | { | |
264 | return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch]; | |
265 | } | |
266 | ||
267 | /* translate string from EBCDIC to ASCII */ | |
268 | static inline void | |
269 | sclp_ebcasc_str(unsigned char *str, int nr) | |
270 | { | |
271 | (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr); | |
272 | } | |
273 | ||
274 | /* translate string from ASCII to EBCDIC */ | |
275 | static inline void | |
276 | sclp_ascebc_str(unsigned char *str, int nr) | |
277 | { | |
278 | (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr); | |
279 | } | |
280 | ||
30c2df51 MS |
281 | static inline struct gds_vector * |
282 | sclp_find_gds_vector(void *start, void *end, u16 id) | |
283 | { | |
284 | struct gds_vector *v; | |
285 | ||
286 | for (v = start; (void *) v < end; v = (void *) v + v->length) | |
287 | if (v->gds_id == id) | |
288 | return v; | |
289 | return NULL; | |
290 | } | |
291 | ||
292 | static inline struct gds_subvector * | |
293 | sclp_find_gds_subvector(void *start, void *end, u8 key) | |
294 | { | |
295 | struct gds_subvector *sv; | |
296 | ||
297 | for (sv = start; (void *) sv < end; sv = (void *) sv + sv->length) | |
298 | if (sv->key == key) | |
299 | return sv; | |
300 | return NULL; | |
301 | } | |
302 | ||
1da177e4 | 303 | #endif /* __SCLP_H__ */ |