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 schib_config {
50 u64 mba;
51 u32 intparm;
52 u16 mbi;
53 u32 isc:3;
54 u32 ena:1;
55 u32 mme:2;
56 u32 mp:1;
57 u32 csense:1;
58 u32 mbfc:1;
59} __attribute__ ((packed));
60
61
62
63
64struct schib {
65 struct pmcw pmcw;
66 union scsw scsw;
67 __u64 mba;
68 __u8 mda[4];
69} __attribute__ ((packed,aligned(4)));
70
71enum sch_todo {
72 SCH_TODO_NOTHING,
73 SCH_TODO_UNREG,
74};
75
76
77struct subchannel {
78 struct subchannel_id schid;
79 spinlock_t *lock;
80 struct mutex reg_mutex;
81 enum {
82 SUBCHANNEL_TYPE_IO = 0,
83 SUBCHANNEL_TYPE_CHSC = 1,
84 SUBCHANNEL_TYPE_MSG = 2,
85 SUBCHANNEL_TYPE_ADM = 3,
86 } st;
87
88 struct {
89 unsigned int suspend:1;
90 unsigned int prefetch:1;
91 unsigned int inter:1;
92 } __attribute__ ((packed)) options;
93
94 __u8 vpm;
95 __u8 lpm;
96 __u8 opm;
97 struct schib schib;
98 int isc;
99 struct chsc_ssd_info ssd_info;
100 struct device dev;
101 struct css_driver *driver;
102 void *private;
103 enum sch_todo todo;
104 struct work_struct todo_work;
105 struct schib_config config;
106} __attribute__ ((aligned(8)));
107
108#define IO_INTERRUPT_TYPE 0
109
110#define to_subchannel(n) container_of(n, struct subchannel, dev)
111
112extern int cio_validate_subchannel (struct subchannel *, struct subchannel_id);
113extern int cio_enable_subchannel(struct subchannel *, u32);
114extern int cio_disable_subchannel (struct subchannel *);
115extern int cio_cancel (struct subchannel *);
116extern int cio_clear (struct subchannel *);
117extern int cio_resume (struct subchannel *);
118extern int cio_halt (struct subchannel *);
119extern int cio_start (struct subchannel *, struct ccw1 *, __u8);
120extern int cio_start_key (struct subchannel *, struct ccw1 *, __u8, __u8);
121extern int cio_cancel (struct subchannel *);
122extern int cio_set_options (struct subchannel *, int);
123extern int cio_get_options (struct subchannel *);
124extern int cio_update_schib(struct subchannel *sch);
125extern int cio_commit_config(struct subchannel *sch);
126
127int cio_tm_start_key(struct subchannel *sch, struct tcw *tcw, u8 lpm, u8 key);
128int cio_tm_intrg(struct subchannel *sch);
129
130int cio_create_sch_lock(struct subchannel *);
131void do_adapter_IO(u8 isc);
132void do_IRQ(struct pt_regs *);
133
134
135#ifdef CONFIG_CCW_CONSOLE
136extern struct subchannel *cio_probe_console(void);
137extern void cio_release_console(void);
138extern int cio_is_console(struct subchannel_id);
139extern struct subchannel *cio_get_console_subchannel(void);
140extern spinlock_t * cio_get_console_lock(void);
141extern void *cio_get_console_priv(void);
142#else
143#define cio_is_console(schid) 0
144#define cio_get_console_subchannel() NULL
145#define cio_get_console_lock() NULL
146#define cio_get_console_priv() NULL
147#endif
148
149#endif
150