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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
84typedef u64 sccb_mask_t;
85
86struct sccb_header {
87 u16 length;
88 u8 function_code;
89 u8 control_mask[3];
90 u16 response_code;
91} __attribute__((packed));
92
93struct init_sccb {
94 struct sccb_header header;
95 u16 _reserved;
96 u16 mask_length;
97 u8 masks[4 * 1021];
98
99
100
101
102
103
104} __attribute__((packed));
105
106#define SCLP_MASK_SIZE_COMPAT 4
107
108static inline sccb_mask_t sccb_get_mask(u8 *masks, size_t len, int i)
109{
110 sccb_mask_t res = 0;
111
112 memcpy(&res, masks + i * len, min(sizeof(res), len));
113 return res;
114}
115
116static inline void sccb_set_mask(u8 *masks, size_t len, int i, sccb_mask_t val)
117{
118 memset(masks + i * len, 0, len);
119 memcpy(masks + i * len, &val, min(sizeof(val), len));
120}
121
122#define sccb_get_generic_mask(sccb, i) \
123({ \
124 __typeof__(sccb) __sccb = sccb; \
125 \
126 sccb_get_mask(__sccb->masks, __sccb->mask_length, i); \
127})
128#define sccb_get_recv_mask(sccb) sccb_get_generic_mask(sccb, 0)
129#define sccb_get_send_mask(sccb) sccb_get_generic_mask(sccb, 1)
130#define sccb_get_sclp_recv_mask(sccb) sccb_get_generic_mask(sccb, 2)
131#define sccb_get_sclp_send_mask(sccb) sccb_get_generic_mask(sccb, 3)
132
133#define sccb_set_generic_mask(sccb, i, val) \
134({ \
135 __typeof__(sccb) __sccb = sccb; \
136 \
137 sccb_set_mask(__sccb->masks, __sccb->mask_length, i, val); \
138})
139#define sccb_set_recv_mask(sccb, val) sccb_set_generic_mask(sccb, 0, val)
140#define sccb_set_send_mask(sccb, val) sccb_set_generic_mask(sccb, 1, val)
141#define sccb_set_sclp_recv_mask(sccb, val) sccb_set_generic_mask(sccb, 2, val)
142#define sccb_set_sclp_send_mask(sccb, val) sccb_set_generic_mask(sccb, 3, val)
143
144struct read_cpu_info_sccb {
145 struct sccb_header header;
146 u16 nr_configured;
147 u16 offset_configured;
148 u16 nr_standby;
149 u16 offset_standby;
150
151
152
153
154 u8 reserved[];
155} __attribute__((packed, aligned(PAGE_SIZE)));
156
157struct read_info_sccb {
158 struct sccb_header header;
159 u16 rnmax;
160 u8 rnsize;
161 u8 _pad_11[16 - 11];
162 u16 ncpurl;
163 u16 cpuoff;
164 u8 _pad_20[24 - 20];
165 u8 loadparm[8];
166 u8 _pad_32[42 - 32];
167 u8 fac42;
168 u8 fac43;
169 u8 _pad_44[48 - 44];
170 u64 facilities;
171 u8 _pad_56[66 - 56];
172 u8 fac66;
173 u8 _pad_67[76 - 67];
174 u32 ibc;
175 u8 _pad80[84 - 80];
176 u8 fac84;
177 u8 fac85;
178 u8 _pad_86[91 - 86];
179 u8 fac91;
180 u8 _pad_92[98 - 92];
181 u8 fac98;
182 u8 hamaxpow;
183 u32 rnsize2;
184 u64 rnmax2;
185 u32 hsa_size;
186 u8 fac116;
187 u8 fac117;
188 u8 fac118;
189 u8 fac119;
190 u16 hcpua;
191 u8 _pad_122[124 - 122];
192 u32 hmfai;
193 u8 _pad_128[134 - 128];
194 u8 byte_134;
195 u8 cpudirq;
196 u16 cbl;
197 u8 _pad_138[EXT_SCCB_READ_SCP - 138];
198} __packed __aligned(PAGE_SIZE);
199
200struct read_storage_sccb {
201 struct sccb_header header;
202 u16 max_id;
203 u16 assigned;
204 u16 standby;
205 u16 :16;
206 u32 entries[0];
207} __packed;
208
209static inline void sclp_fill_core_info(struct sclp_core_info *info,
210 struct read_cpu_info_sccb *sccb)
211{
212 char *page = (char *) sccb;
213
214 memset(info, 0, sizeof(*info));
215 info->configured = sccb->nr_configured;
216 info->standby = sccb->nr_standby;
217 info->combined = sccb->nr_configured + sccb->nr_standby;
218 memcpy(&info->core, page + sccb->offset_configured,
219 info->combined * sizeof(struct sclp_core_entry));
220}
221
222#define SCLP_HAS_CHP_INFO (sclp.facilities & 0x8000000000000000ULL)
223#define SCLP_HAS_CHP_RECONFIG (sclp.facilities & 0x2000000000000000ULL)
224#define SCLP_HAS_CPU_INFO (sclp.facilities & 0x0800000000000000ULL)
225#define SCLP_HAS_CPU_RECONFIG (sclp.facilities & 0x0400000000000000ULL)
226#define SCLP_HAS_PCI_RECONFIG (sclp.facilities & 0x0000000040000000ULL)
227#define SCLP_HAS_AP_RECONFIG (sclp.facilities & 0x0000000100000000ULL)
228
229struct gds_subvector {
230 u8 length;
231 u8 key;
232} __attribute__((packed));
233
234struct gds_vector {
235 u16 length;
236 u16 gds_id;
237} __attribute__((packed));
238
239struct evbuf_header {
240 u16 length;
241 u8 type;
242 u8 flags;
243 u16 _reserved;
244} __attribute__((packed));
245
246struct sclp_req {
247 struct list_head list;
248 sclp_cmdw_t command;
249 void *sccb;
250 char status;
251 int start_count;
252
253 void (*callback)(struct sclp_req *, void *data);
254 void *callback_data;
255 int queue_timeout;
256
257
258
259 unsigned long queue_expires;
260};
261
262#define SCLP_REQ_FILLED 0x00
263#define SCLP_REQ_QUEUED 0x01
264#define SCLP_REQ_RUNNING 0x02
265#define SCLP_REQ_DONE 0x03
266#define SCLP_REQ_FAILED 0x05
267#define SCLP_REQ_QUEUED_TIMEOUT 0x06
268
269#define SCLP_QUEUE_INTERVAL 5
270
271
272
273struct sclp_register {
274 struct list_head list;
275
276 sccb_mask_t receive_mask;
277
278 sccb_mask_t send_mask;
279
280 sccb_mask_t sclp_receive_mask;
281
282 sccb_mask_t sclp_send_mask;
283
284 void (*state_change_fn)(struct sclp_register *);
285
286 void (*receiver_fn)(struct evbuf_header *);
287};
288
289
290int sclp_add_request(struct sclp_req *req);
291void sclp_sync_wait(void);
292int sclp_register(struct sclp_register *reg);
293void sclp_unregister(struct sclp_register *reg);
294int sclp_remove_processed(struct sccb_header *sccb);
295int sclp_deactivate(void);
296int sclp_reactivate(void);
297int sclp_sync_request(sclp_cmdw_t command, void *sccb);
298int sclp_sync_request_timeout(sclp_cmdw_t command, void *sccb, int timeout);
299int sclp_sdias_init(void);
300
301enum {
302 sclp_init_state_uninitialized,
303 sclp_init_state_initializing,
304 sclp_init_state_initialized
305};
306
307extern int sclp_init_state;
308extern int sclp_console_pages;
309extern int sclp_console_drop;
310extern unsigned long sclp_console_full;
311extern bool sclp_mask_compat_mode;
312
313void sclp_early_wait_irq(void);
314int sclp_early_cmd(sclp_cmdw_t cmd, void *sccb);
315unsigned int sclp_early_con_check_linemode(struct init_sccb *sccb);
316unsigned int sclp_early_con_check_vt220(struct init_sccb *sccb);
317int sclp_early_set_event_mask(struct init_sccb *sccb,
318 sccb_mask_t receive_mask,
319 sccb_mask_t send_mask);
320struct read_info_sccb * __init sclp_early_get_info(void);
321
322
323
324
325static inline int sclp_service_call(sclp_cmdw_t command, void *sccb)
326{
327 int cc = 4;
328
329 asm volatile(
330 "0: .insn rre,0xb2200000,%1,%2\n"
331 "1: ipm %0\n"
332 " srl %0,28\n"
333 "2:\n"
334 EX_TABLE(0b, 2b)
335 EX_TABLE(1b, 2b)
336 : "+&d" (cc) : "d" (command), "a" ((unsigned long)sccb)
337 : "cc", "memory");
338 if (cc == 4)
339 return -EINVAL;
340 if (cc == 3)
341 return -EIO;
342 if (cc == 2)
343 return -EBUSY;
344 return 0;
345}
346
347
348
349static inline unsigned char
350sclp_ascebc(unsigned char ch)
351{
352 return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch];
353}
354
355
356static inline void
357sclp_ebcasc_str(char *str, int nr)
358{
359 (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr);
360}
361
362
363static inline void
364sclp_ascebc_str(char *str, int nr)
365{
366 (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr);
367}
368
369static inline struct gds_vector *
370sclp_find_gds_vector(void *start, void *end, u16 id)
371{
372 struct gds_vector *v;
373
374 for (v = start; (void *) v < end; v = (void *) v + v->length)
375 if (v->gds_id == id)
376 return v;
377 return NULL;
378}
379
380static inline struct gds_subvector *
381sclp_find_gds_subvector(void *start, void *end, u8 key)
382{
383 struct gds_subvector *sv;
384
385 for (sv = start; (void *) sv < end; sv = (void *) sv + sv->length)
386 if (sv->key == key)
387 return sv;
388 return NULL;
389}
390
391#endif
392