diff options
Diffstat (limited to 'drivers/s390/block/dasd_int.h')
| -rw-r--r-- | drivers/s390/block/dasd_int.h | 341 |
1 files changed, 276 insertions, 65 deletions
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h index de6b96036aa4..81cfb5c89681 100644 --- a/drivers/s390/block/dasd_int.h +++ b/drivers/s390/block/dasd_int.h @@ -47,7 +47,6 @@ #include <linux/module.h> #include <linux/wait.h> #include <linux/blkdev.h> -#include <linux/genhd.h> #include <linux/hdreg.h> #include <linux/interrupt.h> #include <linux/log2.h> @@ -114,9 +113,6 @@ do { \ __dev_id.ssid, __dev_id.devno, d_data); \ } while (0) -/* limit size for an errorstring */ -#define ERRORLENGTH 30 - /* definition of dbf debug levels */ #define DBF_EMERG 0 /* system is unusable */ #define DBF_ALERT 1 /* action must be taken immediately */ @@ -127,32 +123,6 @@ do { \ #define DBF_INFO 6 /* informational */ #define DBF_DEBUG 6 /* debug-level messages */ -/* messages to be written via klogd and dbf */ -#define DEV_MESSAGE(d_loglevel,d_device,d_string,d_args...)\ -do { \ - printk(d_loglevel PRINTK_HEADER " %s: " d_string "\n", \ - dev_name(&d_device->cdev->dev), d_args); \ - DBF_DEV_EVENT(DBF_ALERT, d_device, d_string, d_args); \ -} while(0) - -#define MESSAGE(d_loglevel,d_string,d_args...)\ -do { \ - printk(d_loglevel PRINTK_HEADER " " d_string "\n", d_args); \ - DBF_EVENT(DBF_ALERT, d_string, d_args); \ -} while(0) - -/* messages to be written via klogd only */ -#define DEV_MESSAGE_LOG(d_loglevel,d_device,d_string,d_args...)\ -do { \ - printk(d_loglevel PRINTK_HEADER " %s: " d_string "\n", \ - dev_name(&d_device->cdev->dev), d_args); \ -} while(0) - -#define MESSAGE_LOG(d_loglevel,d_string,d_args...)\ -do { \ - printk(d_loglevel PRINTK_HEADER " " d_string "\n", d_args); \ -} while(0) - /* Macro to calculate number of blocks per page */ #define BLOCKS_PER_PAGE(blksize) (PAGE_SIZE / blksize) @@ -187,6 +157,8 @@ struct dasd_ccw_req { void (*callback)(struct dasd_ccw_req *, void *data); void *callback_data; + unsigned int proc_bytes; /* bytes for partial completion */ + unsigned int trkcount; /* count formatted tracks */ }; /* @@ -224,7 +196,7 @@ struct dasd_ccw_req { * The following flags are used to suppress output of certain errors. */ #define DASD_CQR_SUPPRESS_NRF 4 /* Suppress 'No Record Found' error */ -#define DASD_CQR_SUPPRESS_FP 5 /* Suppress 'File Protected' error*/ +#define DASD_CQR_SUPPRESS_IT 5 /* Suppress 'Invalid Track' error*/ #define DASD_CQR_SUPPRESS_IL 6 /* Suppress 'Incorrect Length' error */ #define DASD_CQR_SUPPRESS_CR 7 /* Suppress 'Command Reject' error */ @@ -258,6 +230,59 @@ struct dasd_uid { char vduit[33]; }; +#define DASD_UID_STRLEN ( /* vendor */ 3 + 1 + /* serial */ 14 + 1 + \ + /* SSID */ 4 + 1 + /* unit addr */ 2 + 1 + \ + /* vduit */ 32 + 1) + +/* + * PPRC Status data + */ +struct dasd_pprc_header { + __u8 entries; /* 0 Number of device entries */ + __u8 unused; /* 1 unused */ + __u16 entry_length; /* 2-3 Length of device entry */ + __u32 unused2; /* 4-7 unused */ +} __packed; + +struct dasd_pprc_dev_info { + __u8 state; /* 0 Copy State */ + __u8 flags; /* 1 Flags */ + __u8 reserved1[2]; /* 2-3 reserved */ + __u8 prim_lss; /* 4 Primary device LSS */ + __u8 primary; /* 5 Primary device address */ + __u8 sec_lss; /* 6 Secondary device LSS */ + __u8 secondary; /* 7 Secondary device address */ + __u16 pprc_id; /* 8-9 Peer-to-Peer Remote Copy ID */ + __u8 reserved2[12]; /* 10-21 reserved */ + __u16 prim_cu_ssid; /* 22-23 Primary Control Unit SSID */ + __u8 reserved3[12]; /* 24-35 reserved */ + __u16 sec_cu_ssid; /* 36-37 Secondary Control Unit SSID */ + __u8 reserved4[90]; /* 38-127 reserved */ +} __packed; + +struct dasd_pprc_data_sc4 { + struct dasd_pprc_header header; + struct dasd_pprc_dev_info dev_info[5]; +} __packed; + +#define DASD_BUS_ID_SIZE 20 +#define DASD_CP_ENTRIES 5 + +struct dasd_copy_entry { + char busid[DASD_BUS_ID_SIZE]; + struct dasd_device *device; + bool primary; + bool configured; +}; + +struct dasd_copy_relation { + struct dasd_copy_entry entry[DASD_CP_ENTRIES]; + struct dasd_copy_entry *active; +}; + +int dasd_devmap_set_device_copy_relation(struct ccw_device *, + bool pprc_enabled); + /* * the struct dasd_discipline is * sth like a table of virtual functions, if you think of dasd_eckd @@ -268,7 +293,7 @@ struct dasd_discipline { struct module *owner; char ebcname[8]; /* a name used for tagging and printks */ char name[8]; /* a name used for tagging and printks */ - int max_blocks; /* maximum number of blocks to be chained */ + bool has_discard; struct list_head list; /* used for list of disciplines */ @@ -297,7 +322,7 @@ struct dasd_discipline { * e.g. verify that new path is compatible with the current * configuration. */ - int (*verify_path)(struct dasd_device *, __u8); + int (*pe_handler)(struct dasd_device *, __u8, __u8); /* * Last things to do when a device is set online, and first things @@ -307,6 +332,7 @@ struct dasd_discipline { int (*online_to_ready) (struct dasd_device *); int (*basic_to_known)(struct dasd_device *); + unsigned int (*max_sectors)(struct dasd_block *); /* (struct dasd_device *); * Device operation functions. build_cp creates a ccw chain for * a block device request, start_io starts the request and @@ -351,10 +377,6 @@ struct dasd_discipline { int (*fill_info) (struct dasd_device *, struct dasd_information2_t *); int (*ioctl) (struct dasd_block *, unsigned int, void __user *); - /* suspend/resume functions */ - int (*freeze) (struct dasd_device *); - int (*restore) (struct dasd_device *); - /* reload device after state change */ int (*reload) (struct dasd_device *); @@ -367,25 +389,50 @@ struct dasd_discipline { void (*disable_hpf)(struct dasd_device *); int (*hpf_enabled)(struct dasd_device *); void (*reset_path)(struct dasd_device *, __u8); + + /* + * Extent Space Efficient (ESE) relevant functions + */ + int (*is_ese)(struct dasd_device *); + /* Capacity */ + int (*space_allocated)(struct dasd_device *); + int (*space_configured)(struct dasd_device *); + int (*logical_capacity)(struct dasd_device *); + int (*release_space)(struct dasd_device *, struct format_data_t *); + /* Extent Pool */ + int (*ext_pool_id)(struct dasd_device *); + int (*ext_size)(struct dasd_device *); + int (*ext_pool_cap_at_warnlevel)(struct dasd_device *); + int (*ext_pool_warn_thrshld)(struct dasd_device *); + int (*ext_pool_oos)(struct dasd_device *); + int (*ext_pool_exhaust)(struct dasd_device *, struct dasd_ccw_req *); + struct dasd_ccw_req *(*ese_format)(struct dasd_device *, + struct dasd_ccw_req *, struct irb *); + int (*ese_read)(struct dasd_ccw_req *, struct irb *); + int (*pprc_status)(struct dasd_device *, struct dasd_pprc_data_sc4 *); + bool (*pprc_enabled)(struct dasd_device *); + int (*copy_pair_swap)(struct dasd_device *, char *, char *); + int (*device_ping)(struct dasd_device *); }; extern struct dasd_discipline *dasd_diag_discipline_pointer; -/* - * Notification numbers for extended error reporting notifications: - * The DASD_EER_DISABLE notification is sent before a dasd_device (and it's - * eer pointer) is freed. The error reporting module needs to do all necessary - * cleanup steps. - * The DASD_EER_TRIGGER notification sends the actual error reports (triggers). - */ -#define DASD_EER_DISABLE 0 -#define DASD_EER_TRIGGER 1 +/* Trigger IDs for extended error reporting DASD EER and autoquiesce */ +enum eer_trigger { + DASD_EER_FATALERROR = 1, + DASD_EER_NOPATH, + DASD_EER_STATECHANGE, + DASD_EER_PPRCSUSPEND, + DASD_EER_NOSPC, + DASD_EER_TIMEOUTS, + DASD_EER_STARTIO, + + /* enum end marker, only add new trigger above */ + DASD_EER_MAX, + DASD_EER_AUTOQUIESCE = 31, /* internal only */ +}; -/* Trigger IDs for extended error reporting DASD_EER_TRIGGER notification */ -#define DASD_EER_FATALERROR 1 -#define DASD_EER_NOPATH 2 -#define DASD_EER_STATECHANGE 3 -#define DASD_EER_PPRCSUSPEND 4 +#define DASD_EER_VALID ((1U << DASD_EER_MAX) - 1) /* DASD path handling */ @@ -397,10 +444,40 @@ extern struct dasd_discipline *dasd_diag_discipline_pointer; #define DASD_PATH_NOHPF 6 #define DASD_PATH_CUIR 7 #define DASD_PATH_IFCC 8 +#define DASD_PATH_FCSEC 9 #define DASD_THRHLD_MAX 4294967295U #define DASD_INTERVAL_MAX 4294967295U +/* FC Endpoint Security Capabilities */ +#define DASD_FC_SECURITY_UNSUP 0 +#define DASD_FC_SECURITY_AUTH 1 +#define DASD_FC_SECURITY_ENC_FCSP2 2 +#define DASD_FC_SECURITY_ENC_ERAS 3 + +#define DASD_FC_SECURITY_ENC_STR "Encryption" +static const struct { + u8 value; + char *name; +} dasd_path_fcs_mnemonics[] = { + { DASD_FC_SECURITY_UNSUP, "Unsupported" }, + { DASD_FC_SECURITY_AUTH, "Authentication" }, + { DASD_FC_SECURITY_ENC_FCSP2, DASD_FC_SECURITY_ENC_STR }, + { DASD_FC_SECURITY_ENC_ERAS, DASD_FC_SECURITY_ENC_STR }, +}; + +static inline char *dasd_path_get_fcs_str(int val) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(dasd_path_fcs_mnemonics); i++) { + if (dasd_path_fcs_mnemonics[i].value == val) + return dasd_path_fcs_mnemonics[i].name; + } + + return dasd_path_fcs_mnemonics[0].name; +} + struct dasd_path { unsigned long flags; u8 cssid; @@ -409,8 +486,18 @@ struct dasd_path { struct dasd_conf_data *conf_data; atomic_t error_count; unsigned long errorclk; + u8 fc_security; + struct kobject kobj; + bool in_sysfs; }; +#define to_dasd_path(path) container_of(path, struct dasd_path, kobj) + +static inline void dasd_path_release(struct kobject *kobj) +{ +/* Memory for the dasd_path kobject is freed when dasd_free_device() is called */ +} + struct dasd_profile_info { /* legacy part of profile data, as in dasd_profile_info_t */ @@ -451,6 +538,11 @@ struct dasd_profile { spinlock_t lock; }; +struct dasd_format_entry { + struct list_head list; + sector_t track; +}; + struct dasd_device { /* Block device stuff. */ struct dasd_block *block; @@ -482,13 +574,14 @@ struct dasd_device { spinlock_t mem_lock; void *ccw_mem; void *erp_mem; + void *ese_mem; struct list_head ccw_chunks; struct list_head erp_chunks; + struct list_head ese_chunks; atomic_t tasklet_scheduled; struct tasklet_struct tasklet; struct work_struct kick_work; - struct work_struct restore_device; struct work_struct reload_device; struct work_struct kick_validate; struct work_struct suc_work; @@ -514,15 +607,19 @@ struct dasd_device { struct dentry *debugfs_dentry; struct dentry *hosts_dentry; struct dasd_profile profile; + struct dasd_format_entry format_entry; + struct kset *paths_info; + struct dasd_copy_relation *copy; + unsigned long aq_mask; + unsigned int aq_timeouts; }; struct dasd_block { /* Block device stuff. */ struct gendisk *gdp; - struct request_queue *request_queue; spinlock_t request_queue_lock; struct blk_mq_tag_set tag_set; - struct block_device *bdev; + struct file *bdev_file; atomic_t open_count; unsigned long blocks; /* size of volume in blocks */ @@ -539,6 +636,10 @@ struct dasd_block { struct dentry *debugfs_dentry; struct dasd_profile profile; + + struct list_head format_list; + spinlock_t format_lock; + atomic_t trkcount; }; struct dasd_attention_data { @@ -556,8 +657,8 @@ struct dasd_queue { #define DASD_STOPPED_PENDING 4 /* long busy */ #define DASD_STOPPED_DC_WAIT 8 /* disconnected, wait */ #define DASD_STOPPED_SU 16 /* summary unit check handling */ -#define DASD_STOPPED_PM 32 /* pm state transition */ -#define DASD_UNRESUMED_PM 64 /* pm resume failed state */ +#define DASD_STOPPED_PPRC 32 /* PPRC swap */ +#define DASD_STOPPED_NOSPC 128 /* no space left */ /* per device flags */ #define DASD_FLAG_OFFLINE 3 /* device is in offline processing */ @@ -582,6 +683,22 @@ struct dasd_queue { void dasd_put_device_wake(struct dasd_device *); /* + * return values to be returned from the copy pair swap function + * 0x00: swap successful + * 0x01: swap data invalid + * 0x02: no active device found + * 0x03: wrong primary specified + * 0x04: secondary device not found + * 0x05: swap already running + */ +#define DASD_COPYPAIRSWAP_SUCCESS 0 +#define DASD_COPYPAIRSWAP_INVALID 1 +#define DASD_COPYPAIRSWAP_NOACTIVE 2 +#define DASD_COPYPAIRSWAP_PRIMARY 3 +#define DASD_COPYPAIRSWAP_SECONDARY 4 +#define DASD_COPYPAIRSWAP_MULTIPLE 5 + +/* * Reference count inliners */ static inline void @@ -686,6 +803,18 @@ dasd_check_blocksize(int bsize) return 0; } +/* + * return the callback data of the original request in case there are + * ERP requests build on top of it + */ +static inline void *dasd_get_callback_data(struct dasd_ccw_req *cqr) +{ + while (cqr->refers) + cqr = cqr->refers; + + return cqr->callback_data; +} + /* externals in dasd.c */ #define DASD_PROFILE_OFF 0 #define DASD_PROFILE_ON 1 @@ -695,12 +824,15 @@ extern debug_info_t *dasd_debug_area; extern struct dasd_profile dasd_global_profile; extern unsigned int dasd_global_profile_level; extern const struct block_device_operations dasd_device_operations; +extern struct blk_mq_ops dasd_mq_ops; extern struct kmem_cache *dasd_page_cache; struct dasd_ccw_req * dasd_smalloc_request(int, int, int, struct dasd_device *, struct dasd_ccw_req *); +struct dasd_ccw_req *dasd_fmalloc_request(int, int, int, struct dasd_device *); void dasd_sfree_request(struct dasd_ccw_req *, struct dasd_device *); +void dasd_ffree_request(struct dasd_ccw_req *, struct dasd_device *); void dasd_wakeup_cb(struct dasd_ccw_req *, void *); struct dasd_device *dasd_alloc_device(void); @@ -709,12 +841,11 @@ void dasd_free_device(struct dasd_device *); struct dasd_block *dasd_alloc_block(void); void dasd_free_block(struct dasd_block *); -enum blk_eh_timer_return dasd_times_out(struct request *req, bool reserved); +enum blk_eh_timer_return dasd_times_out(struct request *req); void dasd_enable_device(struct dasd_device *); void dasd_set_target_state(struct dasd_device *, int); void dasd_kick_device(struct dasd_device *); -void dasd_restore_device(struct dasd_device *); void dasd_reload_device(struct dasd_device *); void dasd_schedule_requeue(struct dasd_device *); @@ -727,6 +858,7 @@ void dasd_schedule_block_bh(struct dasd_block *); int dasd_sleep_on(struct dasd_ccw_req *); int dasd_sleep_on_queue(struct list_head *); int dasd_sleep_on_immediatly(struct dasd_ccw_req *); +int dasd_sleep_on_queue_interruptible(struct list_head *); int dasd_sleep_on_interruptible(struct dasd_ccw_req *); void dasd_device_set_timer(struct dasd_device *, int); void dasd_device_clear_timer(struct dasd_device *); @@ -734,7 +866,7 @@ void dasd_block_set_timer(struct dasd_block *, int); void dasd_block_clear_timer(struct dasd_block *); int dasd_cancel_req(struct dasd_ccw_req *); int dasd_flush_device_queue(struct dasd_device *); -int dasd_generic_probe (struct ccw_device *, struct dasd_discipline *); +int dasd_generic_probe(struct ccw_device *); void dasd_generic_free_discipline(struct dasd_device *); void dasd_generic_remove (struct ccw_device *cdev); int dasd_generic_set_online(struct ccw_device *, struct dasd_discipline *); @@ -745,11 +877,13 @@ int dasd_generic_path_operational(struct dasd_device *); void dasd_generic_shutdown(struct ccw_device *); void dasd_generic_handle_state_change(struct dasd_device *); -int dasd_generic_pm_freeze(struct ccw_device *); -int dasd_generic_restore_device(struct ccw_device *); enum uc_todo dasd_generic_uc_handler(struct ccw_device *, struct irb *); void dasd_generic_path_event(struct ccw_device *, int *); int dasd_generic_verify_path(struct dasd_device *, __u8); +void dasd_generic_space_exhaust(struct dasd_device *, struct dasd_ccw_req *); +void dasd_generic_space_avail(struct dasd_device *); + +int dasd_generic_requeue_all_requests(struct dasd_device *); int dasd_generic_read_dev_chars(struct dasd_device *, int, void *, int); char *dasd_get_sense(struct irb *); @@ -780,8 +914,10 @@ void dasd_delete_device(struct dasd_device *); int dasd_get_feature(struct ccw_device *, int); int dasd_set_feature(struct ccw_device *, int, int); -int dasd_add_sysfs_files(struct ccw_device *); -void dasd_remove_sysfs_files(struct ccw_device *); +extern const struct attribute_group *dasd_dev_groups[]; +void dasd_path_create_kobj(struct dasd_device *, int); +void dasd_path_create_kobjects(struct dasd_device *); +void dasd_path_remove_kobjects(struct dasd_device *); struct dasd_device *dasd_device_from_cdev(struct ccw_device *); struct dasd_device *dasd_device_from_cdev_locked(struct ccw_device *); @@ -802,7 +938,9 @@ int dasd_scan_partitions(struct dasd_block *); void dasd_destroy_partitions(struct dasd_block *); /* externals in dasd_ioctl.c */ -int dasd_ioctl(struct block_device *, fmode_t, unsigned int, unsigned long); +int dasd_ioctl(struct block_device *bdev, blk_mode_t mode, unsigned int cmd, + unsigned long arg); +int dasd_set_read_only(struct block_device *bdev, bool ro); /* externals in dasd_proc.c */ int dasd_proc_init(void); @@ -811,7 +949,7 @@ void dasd_proc_exit(void); /* externals in dasd_erp.c */ struct dasd_ccw_req *dasd_default_erp_action(struct dasd_ccw_req *); struct dasd_ccw_req *dasd_default_erp_postaction(struct dasd_ccw_req *); -struct dasd_ccw_req *dasd_alloc_erp_request(char *, int, int, +struct dasd_ccw_req *dasd_alloc_erp_request(unsigned int, int, int, struct dasd_device *); void dasd_free_erp_request(struct dasd_ccw_req *, struct dasd_device *); void dasd_log_sense(struct dasd_ccw_req *, struct irb *); @@ -879,6 +1017,29 @@ static inline void dasd_path_clear_all_verify(struct dasd_device *device) dasd_path_clear_verify(device, chp); } +static inline void dasd_path_fcsec(struct dasd_device *device, int chp) +{ + __set_bit(DASD_PATH_FCSEC, &device->path[chp].flags); +} + +static inline void dasd_path_clear_fcsec(struct dasd_device *device, int chp) +{ + __clear_bit(DASD_PATH_FCSEC, &device->path[chp].flags); +} + +static inline int dasd_path_need_fcsec(struct dasd_device *device, int chp) +{ + return test_bit(DASD_PATH_FCSEC, &device->path[chp].flags); +} + +static inline void dasd_path_clear_all_fcsec(struct dasd_device *device) +{ + int chp; + + for (chp = 0; chp < 8; chp++) + dasd_path_clear_fcsec(device, chp); +} + static inline void dasd_path_operational(struct dasd_device *device, int chp) { __set_bit(DASD_PATH_OPERATIONAL, &device->path[chp].flags); @@ -1004,6 +1165,17 @@ static inline __u8 dasd_path_get_tbvpm(struct dasd_device *device) return tbvpm; } +static inline int dasd_path_get_fcsecpm(struct dasd_device *device) +{ + int chp; + + for (chp = 0; chp < 8; chp++) + if (dasd_path_need_fcsec(device, chp)) + return 1; + + return 0; +} + static inline __u8 dasd_path_get_nppm(struct dasd_device *device) { int chp; @@ -1071,6 +1243,31 @@ static inline __u8 dasd_path_get_hpfpm(struct dasd_device *device) return hpfpm; } +static inline u8 dasd_path_get_fcs_path(struct dasd_device *device, int chp) +{ + return device->path[chp].fc_security; +} + +static inline int dasd_path_get_fcs_device(struct dasd_device *device) +{ + u8 fc_sec = 0; + int chp; + + for (chp = 0; chp < 8; chp++) { + if (device->opm & (0x80 >> chp)) { + fc_sec = device->path[chp].fc_security; + break; + } + } + for (; chp < 8; chp++) { + if (device->opm & (0x80 >> chp)) + if (device->path[chp].fc_security != fc_sec) + return -EINVAL; + } + + return fc_sec; +} + /* * add functions for path masks * the existing path mask will be extended by the given path mask @@ -1170,6 +1367,15 @@ static inline void dasd_path_add_ppm(struct dasd_device *device, __u8 pm) dasd_path_preferred(device, chp); } +static inline void dasd_path_add_fcsecpm(struct dasd_device *device, __u8 pm) +{ + int chp; + + for (chp = 0; chp < 8; chp++) + if (pm & (0x80 >> chp)) + dasd_path_fcsec(device, chp); +} + /* * set functions for path masks * the existing path mask will be replaced by the given path mask @@ -1236,6 +1442,11 @@ static inline void dasd_path_notoper(struct dasd_device *device, int chp) dasd_path_clear_nonpreferred(device, chp); } +static inline void dasd_path_fcsec_update(struct dasd_device *device, int chp) +{ + dasd_path_fcsec(device, chp); +} + /* * remove all paths from normal operation */ |