chsc.h 2.0 KB
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#ifndef S390_CHSC_H
#define S390_CHSC_H

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#include <linux/types.h>
#include <linux/device.h>
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#include <asm/chpid.h>
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#include <asm/chsc.h>
#include <asm/schid.h>
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#define CHSC_SDA_OC_MSS   0x2

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struct chsc_header {
	u16 length;
	u16 code;
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} __attribute__ ((packed));
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#define NR_MEASUREMENT_CHARS 5
struct cmg_chars {
	u32 values[NR_MEASUREMENT_CHARS];
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} __attribute__ ((packed));
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#define NR_MEASUREMENT_ENTRIES 8
struct cmg_entry {
	u32 values[NR_MEASUREMENT_ENTRIES];
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} __attribute__ ((packed));
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struct channel_path_desc {
	u8 flags;
	u8 lsn;
	u8 desc;
	u8 chpid;
	u8 swla;
	u8 zeroes;
	u8 chla;
	u8 chpp;
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} __attribute__ ((packed));
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struct channel_path;
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struct css_chsc_char {
	u64 res;
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	u64 : 20;
	u32 secm : 1; /* bit 84 */
	u32 : 1;
	u32 scmc : 1; /* bit 86 */
	u32 : 20;
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	u32 scssc : 1;  /* bit 107 */
	u32 scsscf : 1; /* bit 108 */
	u32 : 19;
}__attribute__((packed));

extern struct css_chsc_char css_chsc_characteristics;

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struct chsc_ssd_info {
	u8 path_mask;
	u8 fla_valid_mask;
	struct chp_id chpid[8];
	u16 fla[8];
};
extern int chsc_get_ssd_info(struct subchannel_id schid,
			     struct chsc_ssd_info *ssd);
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extern int chsc_determine_css_characteristics(void);
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extern int chsc_alloc_sei_area(void);
extern void chsc_free_sei_area(void);
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extern int chsc_enable_facility(int);
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struct channel_subsystem;
extern int chsc_secm(struct channel_subsystem *, int);
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int __chsc_do_secm(struct channel_subsystem *css, int enable, void *page);
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int chsc_chp_vary(struct chp_id chpid, int on);
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int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
				     int c, int m,
				     struct chsc_response_struct *resp);
int chsc_determine_base_channel_path_desc(struct chp_id chpid,
					  struct channel_path_desc *desc);
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void chsc_chp_online(struct chp_id chpid);
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void chsc_chp_offline(struct chp_id chpid);
int chsc_get_channel_measurement_chars(struct channel_path *chp);
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int chsc_error_from_response(int response);

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int chsc_siosl(struct subchannel_id schid);

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#endif
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