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75 lines
1.9 KiB
75 lines
1.9 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright IBM Corp. 2007, 2010 |
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* Author(s): Peter Oberparleiter <[email protected]> |
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*/ |
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#ifndef S390_CHP_H |
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#define S390_CHP_H |
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#include <linux/types.h> |
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#include <linux/device.h> |
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#include <linux/mutex.h> |
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#include <asm/chpid.h> |
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#include "chsc.h" |
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#include "css.h" |
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#define CHP_STATUS_STANDBY 0 |
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#define CHP_STATUS_CONFIGURED 1 |
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#define CHP_STATUS_RESERVED 2 |
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#define CHP_STATUS_NOT_RECOGNIZED 3 |
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#define CHP_ONLINE 0 |
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#define CHP_OFFLINE 1 |
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#define CHP_VARY_ON 2 |
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#define CHP_VARY_OFF 3 |
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#define CHP_FCES_EVENT 4 |
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struct chp_link { |
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struct chp_id chpid; |
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u32 fla_mask; |
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u16 fla; |
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}; |
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static inline int chp_test_bit(u8 *bitmap, int num) |
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{ |
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int byte = num >> 3; |
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int mask = 128 >> (num & 7); |
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return (bitmap[byte] & mask) ? 1 : 0; |
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} |
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struct channel_path { |
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struct device dev; |
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struct chp_id chpid; |
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struct mutex lock; /* Serialize access to below members. */ |
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int state; |
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struct channel_path_desc_fmt0 desc; |
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struct channel_path_desc_fmt1 desc_fmt1; |
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struct channel_path_desc_fmt3 desc_fmt3; |
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/* Channel-measurement related stuff: */ |
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int cmg; |
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int shared; |
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struct cmg_chars cmg_chars; |
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}; |
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/* Return channel_path struct for given chpid. */ |
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static inline struct channel_path *chpid_to_chp(struct chp_id chpid) |
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{ |
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return css_by_id(chpid.cssid)->chps[chpid.id]; |
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} |
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int chp_get_status(struct chp_id chpid); |
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u8 chp_get_sch_opm(struct subchannel *sch); |
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int chp_is_registered(struct chp_id chpid); |
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struct channel_path_desc_fmt0 *chp_get_chp_desc(struct chp_id chpid); |
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void chp_remove_cmg_attr(struct channel_path *chp); |
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int chp_add_cmg_attr(struct channel_path *chp); |
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int chp_update_desc(struct channel_path *chp); |
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int chp_new(struct chp_id chpid); |
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void chp_cfg_schedule(struct chp_id chpid, int configure); |
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void chp_cfg_cancel_deconfigure(struct chp_id chpid); |
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int chp_info_get_status(struct chp_id chpid); |
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int chp_ssd_get_mask(struct chsc_ssd_info *, struct chp_link *); |
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#endif /* S390_CHP_H */
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