78 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * Copyright IBM Corp. 2007, 20104 * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>5 */6 7#ifndef S390_CHP_H8#define S390_CHP_H9 10#include <linux/types.h>11#include <linux/device.h>12#include <linux/mutex.h>13#include <asm/chpid.h>14#include "chsc.h"15#include "css.h"16 17#define CHP_STATUS_STANDBY 018#define CHP_STATUS_CONFIGURED 119#define CHP_STATUS_RESERVED 220#define CHP_STATUS_NOT_RECOGNIZED 321 22#define CHP_ONLINE 023#define CHP_OFFLINE 124#define CHP_VARY_ON 225#define CHP_VARY_OFF 326#define CHP_FCES_EVENT 427 28struct chp_link {29 struct chp_id chpid;30 u32 fla_mask;31 u16 fla;32};33 34static inline int chp_test_bit(u8 *bitmap, int num)35{36 int byte = num >> 3;37 int mask = 128 >> (num & 7);38 39 return (bitmap[byte] & mask) ? 1 : 0;40}41 42 43struct channel_path {44 struct device dev;45 struct chp_id chpid;46 struct mutex lock; /* Serialize access to below members. */47 int state;48 struct channel_path_desc_fmt0 desc;49 struct channel_path_desc_fmt1 desc_fmt1;50 struct channel_path_desc_fmt3 desc_fmt3;51 /* Channel-measurement related stuff: */52 int cmg;53 int shared;54 int extended;55 unsigned long speed;56 struct cmg_chars cmg_chars;57};58 59/* Return channel_path struct for given chpid. */60static inline struct channel_path *chpid_to_chp(struct chp_id chpid)61{62 return css_by_id(chpid.cssid)->chps[chpid.id];63}64 65int chp_get_status(struct chp_id chpid);66u8 chp_get_sch_opm(struct subchannel *sch);67int chp_is_registered(struct chp_id chpid);68struct channel_path_desc_fmt0 *chp_get_chp_desc(struct chp_id chpid);69void chp_remove_cmg_attr(struct channel_path *chp);70int chp_add_cmg_attr(struct channel_path *chp);71int chp_update_desc(struct channel_path *chp);72int chp_new(struct chp_id chpid);73void chp_cfg_schedule(struct chp_id chpid, int configure);74void chp_cfg_cancel_deconfigure(struct chp_id chpid);75int chp_info_get_status(struct chp_id chpid);76int chp_ssd_get_mask(struct chsc_ssd_info *, struct chp_link *);77#endif /* S390_CHP_H */78