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tunedasd: move tunedasd ioctls to libdasd

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Move all DASD IOCTLs to libdasd and adapt all affected
users accordingly.

Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Stefan Haberland
2022-11-10 16:11:09 +01:00
committed by Jan Höppner
parent f654b971d0
commit 4e28047eb4
3 changed files with 252 additions and 218 deletions
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include/lib/dasd_base.h
+73
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@@ -187,6 +187,61 @@ typedef struct format_check_t {
#define DASD_FMT_ERR_RECORD_ID 4
#define DASD_FMT_ERR_KEY_LENGTH 5
/*
* struct profile_info_t
* holds the profiling information
*/
typedef struct dasd_profile_info_t {
unsigned int dasd_io_reqs; /* # of requests processed at all */
unsigned int dasd_io_sects; /* # of sectors processed at all */
unsigned int dasd_io_secs[32]; /* request's sizes */
unsigned int dasd_io_times[32]; /* requests's times */
unsigned int dasd_io_timps[32]; /* requests's times per sector */
unsigned int dasd_io_time1[32]; /* time from build to start */
unsigned int dasd_io_time2[32]; /* time from start to irq */
unsigned int dasd_io_time2ps[32]; /* time from start to irq */
unsigned int dasd_io_time3[32]; /* time from irq to end */
unsigned int dasd_io_nr_req[32]; /* # of requests in chanq */
} dasd_profile_info_t;
/*
* struct attrib_data_t
* represents the operation (cache) bits for the device.
* Used in DE to influence caching of the DASD.
*/
typedef struct attrib_data_t {
unsigned char operation : 3; /* cache operation mode */
unsigned char reserved : 5;
unsigned short nr_cyl; /* no of cyliners for read ahaed */
unsigned char reserved2[29]; /* for future use */
} __attribute__((packed)) attrib_data_t;
/* definition of operation (cache) bits within attributes of DE */
#define DASD_NORMAL_CACHE 0x0
#define DASD_BYPASS_CACHE 0x1
#define DASD_INHIBIT_LOAD 0x2
#define DASD_SEQ_ACCESS 0x3
#define DASD_SEQ_PRESTAGE 0x4
#define DASD_REC_ACCESS 0x5
/*
* Data returned by Sense Path Group ID (SNID)
*/
struct dasd_snid_data {
struct {
__u8 group : 2;
__u8 reserve : 2;
__u8 mode : 1;
__u8 res : 3;
} __attribute__((packed)) path_state;
__u8 pgid[11];
} __attribute__((packed));
struct dasd_snid_ioctl_data {
struct dasd_snid_data data;
__u8 path_mask;
} __attribute__((packed));
#ifndef __linux__
/* definition from hdreg.h */
struct hd_geometry {
@@ -207,12 +262,24 @@ struct hd_geometry {
#define BIODASDRSRV _IO(DASD_IOCTL_LETTER, 2)
/* Release the device for the current LPAR */
#define BIODASDRLSE _IO(DASD_IOCTL_LETTER, 3)
/* Unconditional reserve the device for the current LPAR */
#define BIODASDSLCK _IO(DASD_IOCTL_LETTER, 4)
/* reset profiling information of a device */
#define BIODASDPRRST _IO(DASD_IOCTL_LETTER, 5)
/* retrieve profiling information of a device */
#define BIODASDPRRD _IOR(DASD_IOCTL_LETTER, 2, dasd_profile_info_t)
/* Get information on a dasd device (enhanced) */
#define BIODASDINFO2 _IOR(DASD_IOCTL_LETTER, 3, dasd_information2_t)
/* Get Attributes (cache operations) */
#define BIODASDGATTR _IOR(DASD_IOCTL_LETTER, 5, attrib_data_t)
/* #define BIODASDFORMAT _IOW(IOCTL_LETTER,0,format_data_t) , deprecated */
#define BIODASDFMT _IOW(DASD_IOCTL_LETTER, 1, format_data_t)
/* Set Attributes (cache operations) */
#define BIODASDSATTR _IOW(DASD_IOCTL_LETTER, 2, attrib_data_t)
/* Release Allocated Space */
#define BIODASDRAS _IOW(DASD_IOCTL_LETTER, 3, format_data_t)
/* Get Sense Path Group ID (SNID) data */
#define BIODASDSNID _IOWR(DASD_IOCTL_LETTER, 1, struct dasd_snid_ioctl_data)
/* Check device format according to format_data_t */
#define BIODASDCHECKFMT _IOWR(DASD_IOCTL_LETTER, 2, format_check_t)
@@ -245,5 +312,11 @@ int dasd_is_ro(const char *device, bool *ro);
int dasd_reread_partition_table(const char *device, int ntries);
int dasd_disk_reserve(const char *device);
int dasd_disk_release(const char *device);
int dasd_slock(const char *device);
int dasd_get_cache(const char *device, attrib_data_t *attrib_data);
int dasd_set_cache(const char *device, attrib_data_t *attrib_data);
int dasd_query_reserve(const char *device);
int dasd_profile(const char *device, dasd_profile_info_t *dasd_profile_info);
int dasd_reset_profile(const char *device);
#endif /* LIB_DASD_BASE_H */