chp.h revision e5854a5839fa426a7873f038080f63587de5f1f1 
1/*
2 *  drivers/s390/cio/chp.h
3 *
4 *    Copyright IBM Corp. 2007
5 *    Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
6 */
7
8#ifndef S390_CHP_H
9#define S390_CHP_H S390_CHP_H
10
11#include <linux/types.h>
12#include <linux/device.h>
13#include <asm/chpid.h>
14#include "chsc.h"
15
16#define CHP_STATUS_STANDBY		0
17#define CHP_STATUS_CONFIGURED		1
18#define CHP_STATUS_RESERVED		2
19#define CHP_STATUS_NOT_RECOGNIZED	3
20
21static inline int chp_test_bit(u8 *bitmap, int num)
22{
23	int byte = num >> 3;
24	int mask = 128 >> (num & 7);
25
26	return (bitmap[byte] & mask) ? 1 : 0;
27}
28
29
30struct channel_path {
31	struct chp_id chpid;
32	int state;
33	struct channel_path_desc desc;
34	/* Channel-measurement related stuff: */
35	int cmg;
36	int shared;
37	void *cmg_chars;
38	struct device dev;
39};
40
41int chp_get_status(struct chp_id chpid);
42u8 chp_get_sch_opm(struct subchannel *sch);
43int chp_is_registered(struct chp_id chpid);
44void *chp_get_chp_desc(struct chp_id chpid);
45int chp_process_crw(int id, int available);
46void chp_remove_cmg_attr(struct channel_path *chp);
47int chp_add_cmg_attr(struct channel_path *chp);
48int chp_new(struct chp_id chpid);
49void chp_cfg_schedule(struct chp_id chpid, int configure);
50void chp_cfg_cancel_deconfigure(struct chp_id chpid);
51int chp_info_get_status(struct chp_id chpid);
52
53#endif /* S390_CHP_H */
54