1#ifndef S390_CIO_H
2#define S390_CIO_H
3
4#include <linux/mutex.h>
5#include <linux/device.h>
6#include <linux/mod_devicetable.h>
7#include <asm/chpid.h>
8#include <asm/cio.h>
9#include <asm/fcx.h>
10#include <asm/schid.h>
11#include "chsc.h"
12
13
14
15
16struct pmcw {
17 u32 intparm;
18 u32 qf : 1;
19 u32 w : 1;
20 u32 isc : 3;
21 u32 res5 : 3;
22 u32 ena : 1;
23 u32 lm : 2;
24 u32 mme : 2;
25 u32 mp : 1;
26 u32 tf : 1;
27 u32 dnv : 1;
28 u32 dev : 16;
29 u8 lpm;
30 u8 pnom;
31 u8 lpum;
32 u8 pim;
33 u16 mbi;
34 u8 pom;
35 u8 pam;
36 u8 chpid[8];
37 u32 unused1 : 8;
38 u32 st : 3;
39 u32 unused2 : 18;
40 u32 mbfc : 1;
41 u32 xmwme : 1;
42 u32 csense : 1;
43
44
45
46} __attribute__ ((packed));
47
48
49struct tpi_info {
50 struct subchannel_id schid;
51 u32 intparm;
52 u32 adapter_IO:1;
53 u32 :1;
54 u32 isc:3;
55 u32 :27;
56 u32 type:3;
57 u32 :12;
58} __packed __aligned(4);
59
60
61struct schib_config {
62 u64 mba;
63 u32 intparm;
64 u16 mbi;
65 u32 isc:3;
66 u32 ena:1;
67 u32 mme:2;
68 u32 mp:1;
69 u32 csense:1;
70 u32 mbfc:1;
71} __attribute__ ((packed));
72
73
74
75
76struct schib {
77 struct pmcw pmcw;
78 union scsw scsw;
79 __u64 mba;
80 __u8 mda[4];
81} __attribute__ ((packed,aligned(4)));
82
83
84
85
86
87enum sch_todo {
88 SCH_TODO_NOTHING,
89 SCH_TODO_EVAL,
90 SCH_TODO_UNREG,
91};
92
93
94struct subchannel {
95 struct subchannel_id schid;
96 spinlock_t *lock;
97 struct mutex reg_mutex;
98 enum {
99 SUBCHANNEL_TYPE_IO = 0,
100 SUBCHANNEL_TYPE_CHSC = 1,
101 SUBCHANNEL_TYPE_MSG = 2,
102 SUBCHANNEL_TYPE_ADM = 3,
103 } st;
104 __u8 vpm;
105 __u8 lpm;
106 __u8 opm;
107 struct schib schib;
108 int isc;
109 struct chsc_ssd_info ssd_info;
110 struct device dev;
111 struct css_driver *driver;
112 enum sch_todo todo;
113 struct work_struct todo_work;
114 struct schib_config config;
115} __attribute__ ((aligned(8)));
116
117DECLARE_PER_CPU(struct irb, cio_irb);
118
119#define to_subchannel(n) container_of(n, struct subchannel, dev)
120
121extern int cio_validate_subchannel (struct subchannel *, struct subchannel_id);
122extern int cio_enable_subchannel(struct subchannel *, u32);
123extern int cio_disable_subchannel (struct subchannel *);
124extern int cio_cancel (struct subchannel *);
125extern int cio_clear (struct subchannel *);
126extern int cio_resume (struct subchannel *);
127extern int cio_halt (struct subchannel *);
128extern int cio_start (struct subchannel *, struct ccw1 *, __u8);
129extern int cio_start_key (struct subchannel *, struct ccw1 *, __u8, __u8);
130extern int cio_set_options (struct subchannel *, int);
131extern int cio_update_schib(struct subchannel *sch);
132extern int cio_commit_config(struct subchannel *sch);
133
134int cio_tm_start_key(struct subchannel *sch, struct tcw *tcw, u8 lpm, u8 key);
135int cio_tm_intrg(struct subchannel *sch);
136
137
138#ifdef CONFIG_CCW_CONSOLE
139extern struct subchannel *cio_probe_console(void);
140extern int cio_is_console(struct subchannel_id);
141extern void cio_register_early_subchannels(void);
142extern void cio_tsch(struct subchannel *sch);
143#else
144#define cio_is_console(schid) 0
145static inline void cio_register_early_subchannels(void) {}
146#endif
147
148#endif
149