1
2#ifndef S390_CIO_H
3#define S390_CIO_H
4
5#include <linux/mutex.h>
6#include <linux/device.h>
7#include <linux/mod_devicetable.h>
8#include <asm/chpid.h>
9#include <asm/cio.h>
10#include <asm/fcx.h>
11#include <asm/schid.h>
12#include "chsc.h"
13
14
15
16
17struct pmcw {
18 u32 intparm;
19 u32 qf : 1;
20 u32 w : 1;
21 u32 isc : 3;
22 u32 res5 : 3;
23 u32 ena : 1;
24 u32 lm : 2;
25 u32 mme : 2;
26 u32 mp : 1;
27 u32 tf : 1;
28 u32 dnv : 1;
29 u32 dev : 16;
30 u8 lpm;
31 u8 pnom;
32 u8 lpum;
33 u8 pim;
34 u16 mbi;
35 u8 pom;
36 u8 pam;
37 u8 chpid[8];
38 u32 unused1 : 8;
39 u32 st : 3;
40 u32 unused2 : 18;
41 u32 mbfc : 1;
42 u32 xmwme : 1;
43 u32 csense : 1;
44
45
46
47} __attribute__ ((packed));
48
49
50struct tpi_info {
51 struct subchannel_id schid;
52 u32 intparm;
53 u32 adapter_IO:1;
54 u32 :1;
55 u32 isc:3;
56 u32 :27;
57 u32 type:3;
58 u32 :12;
59} __packed __aligned(4);
60
61
62struct schib_config {
63 u64 mba;
64 u32 intparm;
65 u16 mbi;
66 u32 isc:3;
67 u32 ena:1;
68 u32 mme:2;
69 u32 mp:1;
70 u32 csense:1;
71 u32 mbfc:1;
72} __attribute__ ((packed));
73
74
75
76
77struct schib {
78 struct pmcw pmcw;
79 union scsw scsw;
80 __u64 mba;
81 __u8 mda[4];
82} __attribute__ ((packed,aligned(4)));
83
84
85
86
87
88enum sch_todo {
89 SCH_TODO_NOTHING,
90 SCH_TODO_EVAL,
91 SCH_TODO_UNREG,
92};
93
94
95struct subchannel {
96 struct subchannel_id schid;
97 spinlock_t *lock;
98 struct mutex reg_mutex;
99 enum {
100 SUBCHANNEL_TYPE_IO = 0,
101 SUBCHANNEL_TYPE_CHSC = 1,
102 SUBCHANNEL_TYPE_MSG = 2,
103 SUBCHANNEL_TYPE_ADM = 3,
104 } st;
105 __u8 vpm;
106 __u8 lpm;
107 __u8 opm;
108 struct schib schib;
109 int isc;
110 struct chsc_ssd_info ssd_info;
111 struct device dev;
112 struct css_driver *driver;
113 enum sch_todo todo;
114 struct work_struct todo_work;
115 struct schib_config config;
116} __attribute__ ((aligned(8)));
117
118DECLARE_PER_CPU(struct irb, cio_irb);
119
120#define to_subchannel(n) container_of(n, struct subchannel, dev)
121
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_cancel_halt_clear(struct subchannel *, int *);
127extern int cio_resume (struct subchannel *);
128extern int cio_halt (struct subchannel *);
129extern int cio_start (struct subchannel *, struct ccw1 *, __u8);
130extern int cio_start_key (struct subchannel *, struct ccw1 *, __u8, __u8);
131extern int cio_set_options (struct subchannel *, int);
132extern int cio_update_schib(struct subchannel *sch);
133extern int cio_commit_config(struct subchannel *sch);
134
135int cio_tm_start_key(struct subchannel *sch, struct tcw *tcw, u8 lpm, u8 key);
136int cio_tm_intrg(struct subchannel *sch);
137
138
139#ifdef CONFIG_CCW_CONSOLE
140extern struct subchannel *cio_probe_console(void);
141extern int cio_is_console(struct subchannel_id);
142extern void cio_register_early_subchannels(void);
143extern void cio_tsch(struct subchannel *sch);
144#else
145#define cio_is_console(schid) 0
146static inline void cio_register_early_subchannels(void) {}
147#endif
148
149#endif
150