-/*
+/*
* File...........: linux/drivers/s390/block/dasd_int.h
* Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
- * Horst Hummel <Horst.Hummel@de.ibm.com>
+ * Horst Hummel <Horst.Hummel@de.ibm.com>
* Martin Schwidefsky <schwidefsky@de.ibm.com>
* Bugreports.to..: <Linux390@de.ibm.com>
* (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
*
- * $Revision: 1.57 $
*/
#ifndef DASD_INT_H
* new: the dasd_device structure is allocated.
* known: the discipline for the device is identified.
* basic: the device can do basic i/o.
- * accept: the device is analysed (format is known).
+ * unfmt: the device could not be analyzed (format is unknown).
* ready: partition detection is done and the device is can do block io.
* online: the device accepts requests from the block device queue.
*
#define DASD_STATE_NEW 0
#define DASD_STATE_KNOWN 1
#define DASD_STATE_BASIC 2
-#define DASD_STATE_READY 3
-#define DASD_STATE_ONLINE 4
+#define DASD_STATE_UNFMT 3
+#define DASD_STATE_READY 4
+#define DASD_STATE_ONLINE 5
#include <linux/module.h>
#include <linux/wait.h>
#include <linux/blkdev.h>
-#include <linux/devfs_fs_kernel.h>
#include <linux/genhd.h>
#include <linux/hdreg.h>
#include <linux/interrupt.h>
*/
struct dasd_device;
-typedef int (*dasd_ioctl_fn_t) (struct block_device *bdev, int no, long args);
-
-struct dasd_ioctl {
- struct list_head list;
- struct module *owner;
- int no;
- dasd_ioctl_fn_t handler;
-};
-
typedef enum {
dasd_era_fatal = -1, /* no chance to recover */
dasd_era_none = 0, /* don't recover, everything alright */
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", \
+ d_device->cdev->dev.bus_id, 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)
+
struct dasd_ccw_req {
unsigned int magic; /* Eye catcher */
struct list_head list; /* list_head for request queueing. */
void *data; /* pointer to data area */
/* these are important for recovering erroneous requests */
- struct irb *dstat; /* device status in case of an error */
+ struct irb irb; /* device status in case of an error */
struct dasd_ccw_req *refers; /* ERP-chain queueing. */
void *function; /* originating ERP action */
void *callback_data;
};
-/*
+/*
* dasd_ccw_req -> status can be:
*/
#define DASD_CQR_FILLED 0x00 /* request is ready to be processed */
#define DASD_CQR_DONE 0x03 /* request is completed successfully */
#define DASD_CQR_ERROR 0x04 /* request is completed with error */
#define DASD_CQR_FAILED 0x05 /* request is finally failed */
+#define DASD_CQR_CLEAR 0x06 /* request is clear pending */
/* per dasd_ccw_req flags */
#define DASD_CQR_FLAGS_USE_ERP 0 /* use ERP for this request */
+#define DASD_CQR_FLAGS_FAILFAST 1 /* FAILFAST */
/* Signature for error recovery functions. */
typedef struct dasd_ccw_req *(*dasd_erp_fn_t) (struct dasd_ccw_req *);
int (*term_IO) (struct dasd_ccw_req *);
struct dasd_ccw_req *(*format_device) (struct dasd_device *,
struct format_data_t *);
-
+ int (*free_cp) (struct dasd_ccw_req *, struct request *);
/*
* Error recovery functions. examine_error() returns a value that
* indicates what to do for an error condition. If examine_error()
- * returns 'dasd_era_recover' erp_action() is called to create a
+ * returns 'dasd_era_recover' erp_action() is called to create a
* special error recovery ccw. erp_postaction() is called after
* an error recovery ccw has finished its execution. dump_sense
* is called for every error condition to print the sense data
/* i/o control functions. */
int (*fill_geometry) (struct dasd_device *, struct hd_geometry *);
int (*fill_info) (struct dasd_device *, struct dasd_information2_t *);
+ int (*ioctl) (struct dasd_device *, unsigned int, void __user *);
};
-extern struct dasd_discipline dasd_diag_discipline;
-#ifdef CONFIG_DASD_DIAG
-#define dasd_diag_discipline_pointer (&dasd_diag_discipline)
-#else
-#define dasd_diag_discipline_pointer (0)
-#endif
+extern struct dasd_discipline *dasd_diag_discipline_pointer;
+
+/*
+ * Unique identifier for dasd device.
+ */
+struct dasd_uid {
+ __u8 alias;
+ char vendor[4];
+ char serial[15];
+ __u16 ssid;
+ __u8 unit_addr;
+};
+
+/*
+ * 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_TRIGGER notification */
+#define DASD_EER_FATALERROR 1
+#define DASD_EER_NOPATH 2
+#define DASD_EER_STATECHANGE 3
+#define DASD_EER_PPRCSUSPEND 4
struct dasd_device {
/* Block device stuff. */
spinlock_t request_queue_lock;
struct block_device *bdev;
unsigned int devindex;
- unsigned long blocks; /* size of volume in blocks */
- unsigned int bp_block; /* bytes per block */
- unsigned int s2b_shift; /* log2 (bp_block/512) */
- unsigned long flags; /* per device flags */
+ unsigned long blocks; /* size of volume in blocks */
+ unsigned int bp_block; /* bytes per block */
+ unsigned int s2b_shift; /* log2 (bp_block/512) */
+ unsigned long flags; /* per device flags */
+ unsigned short features; /* copy of devmap-features (read-only!) */
+
+ /* extended error reporting stuff (eer) */
+ struct dasd_ccw_req *eer_cqr;
/* Device discipline stuff. */
struct dasd_discipline *discipline;
+ struct dasd_discipline *base_discipline;
char *private;
/* Device state and target state. */
#define DASD_STOPPED_DC_EIO 16 /* disconnected, return -EIO */
/* per device flags */
-#define DASD_FLAG_RO 0 /* device is read-only */
-#define DASD_FLAG_USE_DIAG 1 /* use diag disciplnie */
#define DASD_FLAG_DSC_ERROR 2 /* return -EIO when disconnected */
#define DASD_FLAG_OFFLINE 3 /* device is in offline processing */
+#define DASD_FLAG_EER_SNSS 4 /* A SNSS is required */
+#define DASD_FLAG_EER_IN_USE 5 /* A SNSS request is running */
void dasd_put_device_wake(struct dasd_device *);
extern unsigned int dasd_profile_level;
extern struct block_device_operations dasd_device_operations;
+extern kmem_cache_t *dasd_page_cache;
+
struct dasd_ccw_req *
dasd_kmalloc_request(char *, int, int, struct dasd_device *);
struct dasd_ccw_req *
int dasd_generic_set_online(struct ccw_device *, struct dasd_discipline *);
int dasd_generic_set_offline (struct ccw_device *cdev);
int dasd_generic_notify(struct ccw_device *, int);
-void dasd_generic_auto_online (struct ccw_driver *);
/* externals in dasd_devmap.c */
extern int dasd_max_devindex;
extern int dasd_probeonly;
extern int dasd_autodetect;
+extern int dasd_nopav;
int dasd_devmap_init(void);
void dasd_devmap_exit(void);
struct dasd_device *dasd_create_device(struct ccw_device *);
void dasd_delete_device(struct dasd_device *);
+int dasd_get_uid(struct ccw_device *, struct dasd_uid *);
+int dasd_set_uid(struct ccw_device *, struct dasd_uid *);
+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 *);
void dasd_destroy_partitions(struct dasd_device *);
/* externals in dasd_ioctl.c */
-int dasd_ioctl_init(void);
-void dasd_ioctl_exit(void);
-int dasd_ioctl_no_register(struct module *, int, dasd_ioctl_fn_t);
-int dasd_ioctl_no_unregister(struct module *, int, dasd_ioctl_fn_t);
int dasd_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
+long dasd_compat_ioctl(struct file *, unsigned int, unsigned long);
/* externals in dasd_proc.c */
int dasd_proc_init(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_device *);
+struct dasd_ccw_req *dasd_alloc_erp_request(char *, 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 *);
void dasd_log_ccw(struct dasd_ccw_req *, int, __u32);
dasd_era_t dasd_9343_erp_examine(struct dasd_ccw_req *, struct irb *);
struct dasd_ccw_req *dasd_9343_erp_action(struct dasd_ccw_req *);
+/* externals in dasd_eer.c */
+#ifdef CONFIG_DASD_EER
+int dasd_eer_init(void);
+void dasd_eer_exit(void);
+int dasd_eer_enable(struct dasd_device *);
+void dasd_eer_disable(struct dasd_device *);
+void dasd_eer_write(struct dasd_device *, struct dasd_ccw_req *cqr,
+ unsigned int id);
+void dasd_eer_snss(struct dasd_device *);
+
+static inline int dasd_eer_enabled(struct dasd_device *device)
+{
+ return device->eer_cqr != NULL;
+}
+#else
+#define dasd_eer_init() (0)
+#define dasd_eer_exit() do { } while (0)
+#define dasd_eer_enable(d) (0)
+#define dasd_eer_disable(d) do { } while (0)
+#define dasd_eer_write(d,c,i) do { } while (0)
+#define dasd_eer_snss(d) do { } while (0)
+#define dasd_eer_enabled(d) (0)
+#endif /* CONFIG_DASD_ERR */
+
#endif /* __KERNEL__ */
#endif /* DASD_H */
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-indent-level: 4
- * c-brace-imaginary-offset: 0
- * c-brace-offset: -4
- * c-argdecl-indent: 4
- * c-label-offset: -4
- * c-continued-statement-offset: 4
- * c-continued-brace-offset: 0
- * indent-tabs-mode: 1
- * tab-width: 8
- * End:
- */
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