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9#ifndef __SCLP_H__
10#define __SCLP_H__
11
12#include <linux/types.h>
13#include <linux/list.h>
14#include <asm/sclp.h>
15#include <asm/ebcdic.h>
16
17
18#define MAX_KMEM_PAGES (sizeof(unsigned long) << 3)
19#define SCLP_CONSOLE_PAGES 6
20
21#define SCLP_EVTYP_MASK(T) (1UL << (sizeof(sccb_mask_t) * BITS_PER_BYTE - (T)))
22
23#define EVTYP_OPCMD 0x01
24#define EVTYP_MSG 0x02
25#define EVTYP_CONFMGMDATA 0x04
26#define EVTYP_DIAG_TEST 0x07
27#define EVTYP_STATECHANGE 0x08
28#define EVTYP_PMSGCMD 0x09
29#define EVTYP_ASYNC 0x0A
30#define EVTYP_CTLPROGIDENT 0x0B
31#define EVTYP_STORE_DATA 0x0C
32#define EVTYP_ERRNOTIFY 0x18
33#define EVTYP_VT220MSG 0x1A
34#define EVTYP_SDIAS 0x1C
35#define EVTYP_SIGQUIESCE 0x1D
36#define EVTYP_OCF 0x1E
37
38#define EVTYP_OPCMD_MASK SCLP_EVTYP_MASK(EVTYP_OPCMD)
39#define EVTYP_MSG_MASK SCLP_EVTYP_MASK(EVTYP_MSG)
40#define EVTYP_CONFMGMDATA_MASK SCLP_EVTYP_MASK(EVTYP_CONFMGMDATA)
41#define EVTYP_DIAG_TEST_MASK SCLP_EVTYP_MASK(EVTYP_DIAG_TEST)
42#define EVTYP_STATECHANGE_MASK SCLP_EVTYP_MASK(EVTYP_STATECHANGE)
43#define EVTYP_PMSGCMD_MASK SCLP_EVTYP_MASK(EVTYP_PMSGCMD)
44#define EVTYP_ASYNC_MASK SCLP_EVTYP_MASK(EVTYP_ASYNC)
45#define EVTYP_CTLPROGIDENT_MASK SCLP_EVTYP_MASK(EVTYP_CTLPROGIDENT)
46#define EVTYP_STORE_DATA_MASK SCLP_EVTYP_MASK(EVTYP_STORE_DATA)
47#define EVTYP_ERRNOTIFY_MASK SCLP_EVTYP_MASK(EVTYP_ERRNOTIFY)
48#define EVTYP_VT220MSG_MASK SCLP_EVTYP_MASK(EVTYP_VT220MSG)
49#define EVTYP_SDIAS_MASK SCLP_EVTYP_MASK(EVTYP_SDIAS)
50#define EVTYP_SIGQUIESCE_MASK SCLP_EVTYP_MASK(EVTYP_SIGQUIESCE)
51#define EVTYP_OCF_MASK SCLP_EVTYP_MASK(EVTYP_OCF)
52
53#define GNRLMSGFLGS_DOM 0x8000
54#define GNRLMSGFLGS_SNDALRM 0x4000
55#define GNRLMSGFLGS_HOLDMSG 0x2000
56
57#define LNTPFLGS_CNTLTEXT 0x8000
58#define LNTPFLGS_LABELTEXT 0x4000
59#define LNTPFLGS_DATATEXT 0x2000
60#define LNTPFLGS_ENDTEXT 0x1000
61#define LNTPFLGS_PROMPTTEXT 0x0800
62
63typedef unsigned int sclp_cmdw_t;
64
65#define SCLP_CMDW_READ_CPU_INFO 0x00010001
66#define SCLP_CMDW_READ_SCP_INFO 0x00020001
67#define SCLP_CMDW_READ_STORAGE_INFO 0x00040001
68#define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001
69#define SCLP_CMDW_READ_EVENT_DATA 0x00770005
70#define SCLP_CMDW_WRITE_EVENT_DATA 0x00760005
71#define SCLP_CMDW_WRITE_EVENT_MASK 0x00780005
72
73#define GDS_ID_MDSMU 0x1310
74#define GDS_ID_MDSROUTEINFO 0x1311
75#define GDS_ID_AGUNWRKCORR 0x1549
76#define GDS_ID_SNACONDREPORT 0x1532
77#define GDS_ID_CPMSU 0x1212
78#define GDS_ID_ROUTTARGINSTR 0x154D
79#define GDS_ID_OPREQ 0x8070
80#define GDS_ID_TEXTCMD 0x1320
81
82#define GDS_KEY_SELFDEFTEXTMSG 0x31
83
84enum sclp_pm_event {
85 SCLP_PM_EVENT_FREEZE,
86 SCLP_PM_EVENT_THAW,
87 SCLP_PM_EVENT_RESTORE,
88};
89
90#define SCLP_PANIC_PRIO 1
91#define SCLP_PANIC_PRIO_CLIENT 0
92
93typedef u64 sccb_mask_t;
94
95struct sccb_header {
96 u16 length;
97 u8 function_code;
98 u8 control_mask[3];
99 u16 response_code;
100} __attribute__((packed));
101
102struct init_sccb {
103 struct sccb_header header;
104 u16 _reserved;
105 u16 mask_length;
106 u8 masks[4 * 1021];
107
108
109
110
111
112
113} __attribute__((packed));
114
115#define SCLP_MASK_SIZE_COMPAT 4
116
117static inline sccb_mask_t sccb_get_mask(u8 *masks, size_t len, int i)
118{
119 sccb_mask_t res = 0;
120
121 memcpy(&res, masks + i * len, min(sizeof(res), len));
122 return res;
123}
124
125static inline void sccb_set_mask(u8 *masks, size_t len, int i, sccb_mask_t val)
126{
127 memset(masks + i * len, 0, len);
128 memcpy(masks + i * len, &val, min(sizeof(val), len));
129}
130
131#define sccb_get_generic_mask(sccb, i) \
132({ \
133 __typeof__(sccb) __sccb = sccb; \
134 \
135 sccb_get_mask(__sccb->masks, __sccb->mask_length, i); \
136})
137#define sccb_get_recv_mask(sccb) sccb_get_generic_mask(sccb, 0)
138#define sccb_get_send_mask(sccb) sccb_get_generic_mask(sccb, 1)
139#define sccb_get_sclp_recv_mask(sccb) sccb_get_generic_mask(sccb, 2)
140#define sccb_get_sclp_send_mask(sccb) sccb_get_generic_mask(sccb, 3)
141
142#define sccb_set_generic_mask(sccb, i, val) \
143({ \
144 __typeof__(sccb) __sccb = sccb; \
145 \
146 sccb_set_mask(__sccb->masks, __sccb->mask_length, i, val); \
147})
148#define sccb_set_recv_mask(sccb, val) sccb_set_generic_mask(sccb, 0, val)
149#define sccb_set_send_mask(sccb, val) sccb_set_generic_mask(sccb, 1, val)
150#define sccb_set_sclp_recv_mask(sccb, val) sccb_set_generic_mask(sccb, 2, val)
151#define sccb_set_sclp_send_mask(sccb, val) sccb_set_generic_mask(sccb, 3, val)
152
153struct read_cpu_info_sccb {
154 struct sccb_header header;
155 u16 nr_configured;
156 u16 offset_configured;
157 u16 nr_standby;
158 u16 offset_standby;
159 u8 reserved[4096 - 16];
160} __attribute__((packed, aligned(PAGE_SIZE)));
161
162struct read_info_sccb {
163 struct sccb_header header;
164 u16 rnmax;
165 u8 rnsize;
166 u8 _pad_11[16 - 11];
167 u16 ncpurl;
168 u16 cpuoff;
169 u8 _pad_20[24 - 20];
170 u8 loadparm[8];
171 u8 _pad_32[42 - 32];
172 u8 fac42;
173 u8 fac43;
174 u8 _pad_44[48 - 44];
175 u64 facilities;
176 u8 _pad_56[66 - 56];
177 u8 fac66;
178 u8 _pad_67[76 - 67];
179 u32 ibc;
180 u8 _pad80[84 - 80];
181 u8 fac84;
182 u8 fac85;
183 u8 _pad_86[91 - 86];
184 u8 fac91;
185 u8 _pad_92[98 - 92];
186 u8 fac98;
187 u8 hamaxpow;
188 u32 rnsize2;
189 u64 rnmax2;
190 u32 hsa_size;
191 u8 fac116;
192 u8 fac117;
193 u8 fac118;
194 u8 fac119;
195 u16 hcpua;
196 u8 _pad_122[124 - 122];
197 u32 hmfai;
198 u8 _pad_128[134 - 128];
199 u8 byte_134;
200 u8 _pad_135[4096 - 135];
201} __packed __aligned(PAGE_SIZE);
202
203struct read_storage_sccb {
204 struct sccb_header header;
205 u16 max_id;
206 u16 assigned;
207 u16 standby;
208 u16 :16;
209 u32 entries[0];
210} __packed;
211
212static inline void sclp_fill_core_info(struct sclp_core_info *info,
213 struct read_cpu_info_sccb *sccb)
214{
215 char *page = (char *) sccb;
216
217 memset(info, 0, sizeof(*info));
218 info->configured = sccb->nr_configured;
219 info->standby = sccb->nr_standby;
220 info->combined = sccb->nr_configured + sccb->nr_standby;
221 memcpy(&info->core, page + sccb->offset_configured,
222 info->combined * sizeof(struct sclp_core_entry));
223}
224
225#define SCLP_HAS_CHP_INFO (sclp.facilities & 0x8000000000000000ULL)
226#define SCLP_HAS_CHP_RECONFIG (sclp.facilities & 0x2000000000000000ULL)
227#define SCLP_HAS_CPU_INFO (sclp.facilities & 0x0800000000000000ULL)
228#define SCLP_HAS_CPU_RECONFIG (sclp.facilities & 0x0400000000000000ULL)
229#define SCLP_HAS_PCI_RECONFIG (sclp.facilities & 0x0000000040000000ULL)
230
231
232struct gds_subvector {
233 u8 length;
234 u8 key;
235} __attribute__((packed));
236
237struct gds_vector {
238 u16 length;
239 u16 gds_id;
240} __attribute__((packed));
241
242struct evbuf_header {
243 u16 length;
244 u8 type;
245 u8 flags;
246 u16 _reserved;
247} __attribute__((packed));
248
249struct sclp_req {
250 struct list_head list;
251 sclp_cmdw_t command;
252 void *sccb;
253 char status;
254 int start_count;
255
256 void (*callback)(struct sclp_req *, void *data);
257 void *callback_data;
258 int queue_timeout;
259
260
261
262 unsigned long queue_expires;
263};
264
265#define SCLP_REQ_FILLED 0x00
266#define SCLP_REQ_QUEUED 0x01
267#define SCLP_REQ_RUNNING 0x02
268#define SCLP_REQ_DONE 0x03
269#define SCLP_REQ_FAILED 0x05
270#define SCLP_REQ_QUEUED_TIMEOUT 0x06
271
272#define SCLP_QUEUE_INTERVAL 5
273
274
275
276struct sclp_register {
277 struct list_head list;
278
279 sccb_mask_t receive_mask;
280
281 sccb_mask_t send_mask;
282
283 sccb_mask_t sclp_receive_mask;
284
285 sccb_mask_t sclp_send_mask;
286
287 void (*state_change_fn)(struct sclp_register *);
288
289 void (*receiver_fn)(struct evbuf_header *);
290
291 void (*pm_event_fn)(struct sclp_register *, enum sclp_pm_event);
292
293 int pm_event_posted;
294};
295
296
297int sclp_add_request(struct sclp_req *req);
298void sclp_sync_wait(void);
299int sclp_register(struct sclp_register *reg);
300void sclp_unregister(struct sclp_register *reg);
301int sclp_remove_processed(struct sccb_header *sccb);
302int sclp_deactivate(void);
303int sclp_reactivate(void);
304int sclp_sync_request(sclp_cmdw_t command, void *sccb);
305int sclp_sync_request_timeout(sclp_cmdw_t command, void *sccb, int timeout);
306
307int sclp_sdias_init(void);
308void sclp_sdias_exit(void);
309
310enum {
311 sclp_init_state_uninitialized,
312 sclp_init_state_initializing,
313 sclp_init_state_initialized
314};
315
316extern int sclp_init_state;
317extern int sclp_console_pages;
318extern int sclp_console_drop;
319extern unsigned long sclp_console_full;
320extern bool sclp_mask_compat_mode;
321
322extern char sclp_early_sccb[PAGE_SIZE];
323
324void sclp_early_wait_irq(void);
325int sclp_early_cmd(sclp_cmdw_t cmd, void *sccb);
326unsigned int sclp_early_con_check_linemode(struct init_sccb *sccb);
327unsigned int sclp_early_con_check_vt220(struct init_sccb *sccb);
328int sclp_early_set_event_mask(struct init_sccb *sccb,
329 sccb_mask_t receive_mask,
330 sccb_mask_t send_mask);
331int sclp_early_get_info(struct read_info_sccb *info);
332
333
334
335
336static inline int sclp_service_call(sclp_cmdw_t command, void *sccb)
337{
338 int cc = 4;
339
340 asm volatile(
341 "0: .insn rre,0xb2200000,%1,%2\n"
342 "1: ipm %0\n"
343 " srl %0,28\n"
344 "2:\n"
345 EX_TABLE(0b, 2b)
346 EX_TABLE(1b, 2b)
347 : "+&d" (cc) : "d" (command), "a" ((unsigned long)sccb)
348 : "cc", "memory");
349 if (cc == 4)
350 return -EINVAL;
351 if (cc == 3)
352 return -EIO;
353 if (cc == 2)
354 return -EBUSY;
355 return 0;
356}
357
358
359
360static inline unsigned char
361sclp_ascebc(unsigned char ch)
362{
363 return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch];
364}
365
366
367static inline void
368sclp_ebcasc_str(unsigned char *str, int nr)
369{
370 (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr);
371}
372
373
374static inline void
375sclp_ascebc_str(unsigned char *str, int nr)
376{
377 (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr);
378}
379
380static inline struct gds_vector *
381sclp_find_gds_vector(void *start, void *end, u16 id)
382{
383 struct gds_vector *v;
384
385 for (v = start; (void *) v < end; v = (void *) v + v->length)
386 if (v->gds_id == id)
387 return v;
388 return NULL;
389}
390
391static inline struct gds_subvector *
392sclp_find_gds_subvector(void *start, void *end, u8 key)
393{
394 struct gds_subvector *sv;
395
396 for (sv = start; (void *) sv < end; sv = (void *) sv + sv->length)
397 if (sv->key == key)
398 return sv;
399 return NULL;
400}
401
402#endif
403