tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright IBM Corp. 1999,2012
3 *
4 * Author(s): Martin Peschke <mpeschke@de.ibm.com>
5 * Martin Schwidefsky <schwidefsky@de.ibm.com>
6 */
7
8#ifndef __SCLP_H__
9#define __SCLP_H__
10
11#include <linux/types.h>
12#include <linux/list.h>
13#include <asm/sclp.h>
14#include <asm/ebcdic.h>
15
16/* maximum number of pages concerning our own memory management */
17#define MAX_KMEM_PAGES (sizeof(unsigned long) << 3)
18#define SCLP_CONSOLE_PAGES 6
19
20#define EVTYP_OPCMD 0x01
21#define EVTYP_MSG 0x02
22#define EVTYP_DIAG_TEST 0x07
23#define EVTYP_STATECHANGE 0x08
24#define EVTYP_PMSGCMD 0x09
25#define EVTYP_CNTLPROGOPCMD 0x20
26#define EVTYP_CNTLPROGIDENT 0x0B
27#define EVTYP_SIGQUIESCE 0x1D
28#define EVTYP_VT220MSG 0x1A
29#define EVTYP_CONFMGMDATA 0x04
30#define EVTYP_SDIAS 0x1C
31#define EVTYP_ASYNC 0x0A
32#define EVTYP_OCF 0x1E
33
34#define EVTYP_OPCMD_MASK 0x80000000
35#define EVTYP_MSG_MASK 0x40000000
36#define EVTYP_DIAG_TEST_MASK 0x02000000
37#define EVTYP_STATECHANGE_MASK 0x01000000
38#define EVTYP_PMSGCMD_MASK 0x00800000
39#define EVTYP_CTLPROGOPCMD_MASK 0x00000001
40#define EVTYP_CTLPROGIDENT_MASK 0x00200000
41#define EVTYP_SIGQUIESCE_MASK 0x00000008
42#define EVTYP_VT220MSG_MASK 0x00000040
43#define EVTYP_CONFMGMDATA_MASK 0x10000000
44#define EVTYP_SDIAS_MASK 0x00000010
45#define EVTYP_ASYNC_MASK 0x00400000
46#define EVTYP_OCF_MASK 0x00000004
47
48#define GNRLMSGFLGS_DOM 0x8000
49#define GNRLMSGFLGS_SNDALRM 0x4000
50#define GNRLMSGFLGS_HOLDMSG 0x2000
51
52#define LNTPFLGS_CNTLTEXT 0x8000
53#define LNTPFLGS_LABELTEXT 0x4000
54#define LNTPFLGS_DATATEXT 0x2000
55#define LNTPFLGS_ENDTEXT 0x1000
56#define LNTPFLGS_PROMPTTEXT 0x0800
57
58typedef unsigned int sclp_cmdw_t;
59
60#define SCLP_CMDW_READ_EVENT_DATA 0x00770005
61#define SCLP_CMDW_WRITE_EVENT_DATA 0x00760005
62#define SCLP_CMDW_WRITE_EVENT_MASK 0x00780005
63
64#define GDS_ID_MDSMU 0x1310
65#define GDS_ID_MDSROUTEINFO 0x1311
66#define GDS_ID_AGUNWRKCORR 0x1549
67#define GDS_ID_SNACONDREPORT 0x1532
68#define GDS_ID_CPMSU 0x1212
69#define GDS_ID_ROUTTARGINSTR 0x154D
70#define GDS_ID_OPREQ 0x8070
71#define GDS_ID_TEXTCMD 0x1320
72
73#define GDS_KEY_SELFDEFTEXTMSG 0x31
74
75enum sclp_pm_event {
76 SCLP_PM_EVENT_FREEZE,
77 SCLP_PM_EVENT_THAW,
78 SCLP_PM_EVENT_RESTORE,
79};
80
81#define SCLP_PANIC_PRIO 1
82#define SCLP_PANIC_PRIO_CLIENT 0
83
84typedef u32 sccb_mask_t; /* ATTENTION: assumes 32bit mask !!! */
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 sccb_mask_t receive_mask;
98 sccb_mask_t send_mask;
99 sccb_mask_t sclp_receive_mask;
100 sccb_mask_t sclp_send_mask;
101} __attribute__((packed));
102
103#define SCLP_HAS_CHP_INFO (sclp.facilities & 0x8000000000000000ULL)
104#define SCLP_HAS_CHP_RECONFIG (sclp.facilities & 0x2000000000000000ULL)
105#define SCLP_HAS_CPU_INFO (sclp.facilities & 0x0800000000000000ULL)
106#define SCLP_HAS_CPU_RECONFIG (sclp.facilities & 0x0400000000000000ULL)
107#define SCLP_HAS_PCI_RECONFIG (sclp.facilities & 0x0000000040000000ULL)
108
109
110struct gds_subvector {
111 u8 length;
112 u8 key;
113} __attribute__((packed));
114
115struct gds_vector {
116 u16 length;
117 u16 gds_id;
118} __attribute__((packed));
119
120struct evbuf_header {
121 u16 length;
122 u8 type;
123 u8 flags;
124 u16 _reserved;
125} __attribute__((packed));
126
127struct sclp_req {
128 struct list_head list; /* list_head for request queueing. */
129 sclp_cmdw_t command; /* sclp command to execute */
130 void *sccb; /* pointer to the sccb to execute */
131 char status; /* status of this request */
132 int start_count; /* number of SVCs done for this req */
133 /* Callback that is called after reaching final status. */
134 void (*callback)(struct sclp_req *, void *data);
135 void *callback_data;
136 int queue_timeout; /* request queue timeout (sec), set by
137 caller of sclp_add_request(), if
138 needed */
139 /* Internal fields */
140 unsigned long queue_expires; /* request queue timeout (jiffies) */
141};
142
143#define SCLP_REQ_FILLED 0x00 /* request is ready to be processed */
144#define SCLP_REQ_QUEUED 0x01 /* request is queued to be processed */
145#define SCLP_REQ_RUNNING 0x02 /* request is currently running */
146#define SCLP_REQ_DONE 0x03 /* request is completed successfully */
147#define SCLP_REQ_FAILED 0x05 /* request is finally failed */
148#define SCLP_REQ_QUEUED_TIMEOUT 0x06 /* request on queue timed out */
149
150#define SCLP_QUEUE_INTERVAL 5 /* timeout interval for request queue */
151
152/* function pointers that a high level driver has to use for registration */
153/* of some routines it wants to be called from the low level driver */
154struct sclp_register {
155 struct list_head list;
156 /* User wants to receive: */
157 sccb_mask_t receive_mask;
158 /* User wants to send: */
159 sccb_mask_t send_mask;
160 /* H/W can receive: */
161 sccb_mask_t sclp_receive_mask;
162 /* H/W can send: */
163 sccb_mask_t sclp_send_mask;
164 /* called if event type availability changes */
165 void (*state_change_fn)(struct sclp_register *);
166 /* called for events in cp_receive_mask/sclp_receive_mask */
167 void (*receiver_fn)(struct evbuf_header *);
168 /* called for power management events */
169 void (*pm_event_fn)(struct sclp_register *, enum sclp_pm_event);
170 /* pm event posted flag */
171 int pm_event_posted;
172};
173
174/* externals from sclp.c */
175int sclp_add_request(struct sclp_req *req);
176void sclp_sync_wait(void);
177int sclp_register(struct sclp_register *reg);
178void sclp_unregister(struct sclp_register *reg);
179int sclp_remove_processed(struct sccb_header *sccb);
180int sclp_deactivate(void);
181int sclp_reactivate(void);
182int sclp_service_call(sclp_cmdw_t command, void *sccb);
183int sclp_sync_request(sclp_cmdw_t command, void *sccb);
184int sclp_sync_request_timeout(sclp_cmdw_t command, void *sccb, int timeout);
185
186int sclp_sdias_init(void);
187void sclp_sdias_exit(void);
188
189extern int sclp_console_pages;
190extern int sclp_console_drop;
191extern unsigned long sclp_console_full;
192
193/* useful inlines */
194
195/* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */
196/* translate single character from ASCII to EBCDIC */
197static inline unsigned char
198sclp_ascebc(unsigned char ch)
199{
200 return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch];
201}
202
203/* translate string from EBCDIC to ASCII */
204static inline void
205sclp_ebcasc_str(unsigned char *str, int nr)
206{
207 (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr);
208}
209
210/* translate string from ASCII to EBCDIC */
211static inline void
212sclp_ascebc_str(unsigned char *str, int nr)
213{
214 (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr);
215}
216
217static inline struct gds_vector *
218sclp_find_gds_vector(void *start, void *end, u16 id)
219{
220 struct gds_vector *v;
221
222 for (v = start; (void *) v < end; v = (void *) v + v->length)
223 if (v->gds_id == id)
224 return v;
225 return NULL;
226}
227
228static inline struct gds_subvector *
229sclp_find_gds_subvector(void *start, void *end, u8 key)
230{
231 struct gds_subvector *sv;
232
233 for (sv = start; (void *) sv < end; sv = (void *) sv + sv->length)
234 if (sv->key == key)
235 return sv;
236 return NULL;
237}
238
239#endif /* __SCLP_H__ */