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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_EVENT_DATA 0x00770005
67#define SCLP_CMDW_WRITE_EVENT_DATA 0x00760005
68#define SCLP_CMDW_WRITE_EVENT_MASK 0x00780005
69
70#define GDS_ID_MDSMU 0x1310
71#define GDS_ID_MDSROUTEINFO 0x1311
72#define GDS_ID_AGUNWRKCORR 0x1549
73#define GDS_ID_SNACONDREPORT 0x1532
74#define GDS_ID_CPMSU 0x1212
75#define GDS_ID_ROUTTARGINSTR 0x154D
76#define GDS_ID_OPREQ 0x8070
77#define GDS_ID_TEXTCMD 0x1320
78
79#define GDS_KEY_SELFDEFTEXTMSG 0x31
80
81enum sclp_pm_event {
82 SCLP_PM_EVENT_FREEZE,
83 SCLP_PM_EVENT_THAW,
84 SCLP_PM_EVENT_RESTORE,
85};
86
87#define SCLP_PANIC_PRIO 1
88#define SCLP_PANIC_PRIO_CLIENT 0
89
90typedef u64 sccb_mask_t;
91
92struct sccb_header {
93 u16 length;
94 u8 function_code;
95 u8 control_mask[3];
96 u16 response_code;
97} __attribute__((packed));
98
99struct init_sccb {
100 struct sccb_header header;
101 u16 _reserved;
102 u16 mask_length;
103 u8 masks[4 * 1021];
104
105
106
107
108
109
110} __attribute__((packed));
111
112#define SCLP_MASK_SIZE_COMPAT 4
113
114static inline sccb_mask_t sccb_get_mask(u8 *masks, size_t len, int i)
115{
116 sccb_mask_t res = 0;
117
118 memcpy(&res, masks + i * len, min(sizeof(res), len));
119 return res;
120}
121
122static inline void sccb_set_mask(u8 *masks, size_t len, int i, sccb_mask_t val)
123{
124 memset(masks + i * len, 0, len);
125 memcpy(masks + i * len, &val, min(sizeof(val), len));
126}
127
128#define sccb_get_generic_mask(sccb, i) \
129({ \
130 __typeof__(sccb) __sccb = sccb; \
131 \
132 sccb_get_mask(__sccb->masks, __sccb->mask_length, i); \
133})
134#define sccb_get_recv_mask(sccb) sccb_get_generic_mask(sccb, 0)
135#define sccb_get_send_mask(sccb) sccb_get_generic_mask(sccb, 1)
136#define sccb_get_sclp_recv_mask(sccb) sccb_get_generic_mask(sccb, 2)
137#define sccb_get_sclp_send_mask(sccb) sccb_get_generic_mask(sccb, 3)
138
139#define sccb_set_generic_mask(sccb, i, val) \
140({ \
141 __typeof__(sccb) __sccb = sccb; \
142 \
143 sccb_set_mask(__sccb->masks, __sccb->mask_length, i, val); \
144})
145#define sccb_set_recv_mask(sccb, val) sccb_set_generic_mask(sccb, 0, val)
146#define sccb_set_send_mask(sccb, val) sccb_set_generic_mask(sccb, 1, val)
147#define sccb_set_sclp_recv_mask(sccb, val) sccb_set_generic_mask(sccb, 2, val)
148#define sccb_set_sclp_send_mask(sccb, val) sccb_set_generic_mask(sccb, 3, val)
149
150struct read_cpu_info_sccb {
151 struct sccb_header header;
152 u16 nr_configured;
153 u16 offset_configured;
154 u16 nr_standby;
155 u16 offset_standby;
156 u8 reserved[4096 - 16];
157} __attribute__((packed, aligned(PAGE_SIZE)));
158
159static inline void sclp_fill_core_info(struct sclp_core_info *info,
160 struct read_cpu_info_sccb *sccb)
161{
162 char *page = (char *) sccb;
163
164 memset(info, 0, sizeof(*info));
165 info->configured = sccb->nr_configured;
166 info->standby = sccb->nr_standby;
167 info->combined = sccb->nr_configured + sccb->nr_standby;
168 memcpy(&info->core, page + sccb->offset_configured,
169 info->combined * sizeof(struct sclp_core_entry));
170}
171
172#define SCLP_HAS_CHP_INFO (sclp.facilities & 0x8000000000000000ULL)
173#define SCLP_HAS_CHP_RECONFIG (sclp.facilities & 0x2000000000000000ULL)
174#define SCLP_HAS_CPU_INFO (sclp.facilities & 0x0800000000000000ULL)
175#define SCLP_HAS_CPU_RECONFIG (sclp.facilities & 0x0400000000000000ULL)
176#define SCLP_HAS_PCI_RECONFIG (sclp.facilities & 0x0000000040000000ULL)
177
178
179struct gds_subvector {
180 u8 length;
181 u8 key;
182} __attribute__((packed));
183
184struct gds_vector {
185 u16 length;
186 u16 gds_id;
187} __attribute__((packed));
188
189struct evbuf_header {
190 u16 length;
191 u8 type;
192 u8 flags;
193 u16 _reserved;
194} __attribute__((packed));
195
196struct sclp_req {
197 struct list_head list;
198 sclp_cmdw_t command;
199 void *sccb;
200 char status;
201 int start_count;
202
203 void (*callback)(struct sclp_req *, void *data);
204 void *callback_data;
205 int queue_timeout;
206
207
208
209 unsigned long queue_expires;
210};
211
212#define SCLP_REQ_FILLED 0x00
213#define SCLP_REQ_QUEUED 0x01
214#define SCLP_REQ_RUNNING 0x02
215#define SCLP_REQ_DONE 0x03
216#define SCLP_REQ_FAILED 0x05
217#define SCLP_REQ_QUEUED_TIMEOUT 0x06
218
219#define SCLP_QUEUE_INTERVAL 5
220
221
222
223struct sclp_register {
224 struct list_head list;
225
226 sccb_mask_t receive_mask;
227
228 sccb_mask_t send_mask;
229
230 sccb_mask_t sclp_receive_mask;
231
232 sccb_mask_t sclp_send_mask;
233
234 void (*state_change_fn)(struct sclp_register *);
235
236 void (*receiver_fn)(struct evbuf_header *);
237
238 void (*pm_event_fn)(struct sclp_register *, enum sclp_pm_event);
239
240 int pm_event_posted;
241};
242
243
244int sclp_add_request(struct sclp_req *req);
245void sclp_sync_wait(void);
246int sclp_register(struct sclp_register *reg);
247void sclp_unregister(struct sclp_register *reg);
248int sclp_remove_processed(struct sccb_header *sccb);
249int sclp_deactivate(void);
250int sclp_reactivate(void);
251int sclp_sync_request(sclp_cmdw_t command, void *sccb);
252int sclp_sync_request_timeout(sclp_cmdw_t command, void *sccb, int timeout);
253
254int sclp_sdias_init(void);
255void sclp_sdias_exit(void);
256
257enum {
258 sclp_init_state_uninitialized,
259 sclp_init_state_initializing,
260 sclp_init_state_initialized
261};
262
263extern int sclp_init_state;
264extern int sclp_console_pages;
265extern int sclp_console_drop;
266extern unsigned long sclp_console_full;
267extern bool sclp_mask_compat_mode;
268
269extern char sclp_early_sccb[PAGE_SIZE];
270
271void sclp_early_wait_irq(void);
272int sclp_early_cmd(sclp_cmdw_t cmd, void *sccb);
273unsigned int sclp_early_con_check_linemode(struct init_sccb *sccb);
274unsigned int sclp_early_con_check_vt220(struct init_sccb *sccb);
275int sclp_early_set_event_mask(struct init_sccb *sccb,
276 sccb_mask_t receive_mask,
277 sccb_mask_t send_mask);
278
279
280
281
282static inline int sclp_service_call(sclp_cmdw_t command, void *sccb)
283{
284 int cc = 4;
285
286 asm volatile(
287 "0: .insn rre,0xb2200000,%1,%2\n"
288 "1: ipm %0\n"
289 " srl %0,28\n"
290 "2:\n"
291 EX_TABLE(0b, 2b)
292 EX_TABLE(1b, 2b)
293 : "+&d" (cc) : "d" (command), "a" ((unsigned long)sccb)
294 : "cc", "memory");
295 if (cc == 4)
296 return -EINVAL;
297 if (cc == 3)
298 return -EIO;
299 if (cc == 2)
300 return -EBUSY;
301 return 0;
302}
303
304
305
306static inline unsigned char
307sclp_ascebc(unsigned char ch)
308{
309 return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch];
310}
311
312
313static inline void
314sclp_ebcasc_str(unsigned char *str, int nr)
315{
316 (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr);
317}
318
319
320static inline void
321sclp_ascebc_str(unsigned char *str, int nr)
322{
323 (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr);
324}
325
326static inline struct gds_vector *
327sclp_find_gds_vector(void *start, void *end, u16 id)
328{
329 struct gds_vector *v;
330
331 for (v = start; (void *) v < end; v = (void *) v + v->length)
332 if (v->gds_id == id)
333 return v;
334 return NULL;
335}
336
337static inline struct gds_subvector *
338sclp_find_gds_subvector(void *start, void *end, u8 key)
339{
340 struct gds_subvector *sv;
341
342 for (sv = start; (void *) sv < end; sv = (void *) sv + sv->length)
343 if (sv->key == key)
344 return sv;
345 return NULL;
346}
347
348#endif
349
