chp.h revision 0ae7a7b250bdf7ee87c8346164ef3c47fb79dfbd 
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#include "css.h"
16
17#define CHP_STATUS_STANDBY		0
18#define CHP_STATUS_CONFIGURED		1
19#define CHP_STATUS_RESERVED		2
20#define CHP_STATUS_NOT_RECOGNIZED	3
21
22static inline int chp_test_bit(u8 *bitmap, int num)
23{
24	int byte = num >> 3;
25	int mask = 128 >> (num & 7);
26
27	return (bitmap[byte] & mask) ? 1 : 0;
28}
29
30
31struct channel_path {
32	struct chp_id chpid;
33	int state;
34	struct channel_path_desc desc;
35	/* Channel-measurement related stuff: */
36	int cmg;
37	int shared;
38	void *cmg_chars;
39	struct device dev;
40};
41
42int chp_get_status(struct chp_id chpid);
43u8 chp_get_sch_opm(struct subchannel *sch);
44int chp_is_registered(struct chp_id chpid);
45void *chp_get_chp_desc(struct chp_id chpid);
46void chp_process_crw(int id, int available);
47void chp_remove_cmg_attr(struct channel_path *chp);
48int chp_add_cmg_attr(struct channel_path *chp);
49int chp_new(struct chp_id chpid);
50void chp_cfg_schedule(struct chp_id chpid, int configure);
51void chp_cfg_cancel_deconfigure(struct chp_id chpid);
52int chp_info_get_status(struct chp_id chpid);
53
54#endif /* S390_CHP_H */
55