patch-2.2.14 linux/drivers/s390/block/dasd_types.h

• Lines: 304
• Date: Tue Jan 4 10:12:18 2000
• Orig file: v2.2.13/linux/drivers/s390/block/dasd_types.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.2.13/linux/drivers/s390/block/dasd_types.h linux/drivers/s390/block/dasd_types.h
@@ -0,0 +1,303 @@
+/* 456789.123456789.123456789.123456789.123456789.123456789.123456789.123456789.
+ * IBM CONFIDENTIAL
+ * File...........: linux/drivers/s390/block/dasd_types.h
+ * Author.........: Holger Smolinski <Holger.Smolinski@de.ibm.com>
+ * Created........: 08/31/1999
+ * Last Modified..: 09/29/1999
+ * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999
+
+ * List of Changes:
+ - Initial Release as of 09/29/1999
+
+ * Description
+
+ * Restrictions
+
+ * Known Bugs
+
+ * Todo-List
+
+ */
+
+#ifndef DASD_TYPES_H
+#define DASD_TYPES_H
+
+#include "dasd.h"
+
+#include <linux/blkdev.h>
+
+#include "../../../arch/s390/kernel/irq.h"
+
+#define CCW_DEFINE_EXTENT 0x63
+#define CCW_LOCATE_RECORD 0x43
+#define CCW_READ_DEVICE_CHARACTERISTICS 0x64
+
+typedef
+enum {
+	dasd_none = -1,
+#ifdef CONFIG_DASD_FBA
+	dasd_fba,
+#endif				/* CONFIG_DASD_FBA */
+#ifdef CONFIG_DASD_CKD
+	dasd_ckd,
+#endif				/* CONFIG_DASD_CKD */
+#ifdef CONFIG_DASD_ECKD
+	dasd_eckd
+#endif				/* CONFIG_DASD_ECKD */
+} dasd_type_t;
+
+typedef
+struct {
+	union {
+		__u8 c;
+		struct {
+			unsigned char reserved:1;
+			unsigned char overrunnable:1;
+			unsigned char burst_byte:1;
+			unsigned char data_chain:1;
+			unsigned char zeros:4;
+		} __attribute__ ((packed)) bits;
+	} __attribute__ ((packed)) mode;
+	union {
+		__u8 c;
+		struct {
+			unsigned char zero0:1;
+			unsigned char removable:1;
+			unsigned char shared:1;
+			unsigned char zero1:1;
+			unsigned char bam:1;
+			unsigned char hpsa:1;
+			unsigned char zeros:2;
+		} __attribute__ ((packed)) bits;
+	} __attribute__ ((packed)) features;
+	__u8 dev_class;
+	__u8 unit_type;
+	__u16 blk_size;
+	__u32 blk_per_cycl;
+	__u32 blk_per_bound;
+	__u32 blk_bdsa;
+	__u32 blk_hpsa;
+	__u16 reserved1;
+	__u16 blk_ce;
+	__u32 reserved2;
+	__u16 reserved3;
+} __attribute__ ((packed, aligned (32))) 
+
+dasd_fba_characteristics_t;
+
+typedef
+struct {
+	__u16 cu_type;
+	struct {
+		unsigned char support:2;
+		unsigned char async:1;
+		unsigned char reserved:1;
+		unsigned char cache_info:1;
+		unsigned char model:3;
+	} __attribute__ ((packed)) cu_model;
+	__u16 dev_type;
+	__u8 dev_model;
+	struct {
+		unsigned char mult_burst:1;
+		unsigned char RT_in_LR:1;
+		unsigned char reserved1:1;
+		unsigned char RD_IN_LR:1;
+		unsigned char reserved2:4;
+		unsigned char reserved3:8;
+		unsigned char defect_wr:1;
+		unsigned char reserved4:2;
+		unsigned char striping:1;
+		unsigned char reserved5:4;
+		unsigned char cfw:1;
+		unsigned char reserved6:2;
+		unsigned char cache:1;
+		unsigned char dual_copy:1;
+		unsigned char dfw:1;
+		unsigned char reset_alleg:1;
+		unsigned char sense_down:1;
+	} __attribute__ ((packed)) facilities;
+	__u8 dev_class;
+	__u8 unit_type;
+	__u16 no_cyl;
+	__u16 trk_per_cyl;
+	__u8 sec_per_trk;
+	__u8 byte_per_track[3];
+	__u16 home_bytes;
+	__u8 formula;
+	union {
+		struct {
+			__u8 f1;
+			__u16 f2;
+			__u16 f3;
+		} __attribute__ ((packed)) f_0x01;
+		struct {
+			__u8 f1;
+			__u8 f2;
+			__u8 f3;
+			__u8 f4;
+			__u8 f5;
+		} __attribute__ ((packed)) f_0x02;
+	} __attribute__ ((packed)) factors;
+	__u16 first_alt_trk;
+	__u16 no_alt_trk;
+	__u16 first_dia_trk;
+	__u16 no_dia_trk;
+	__u16 first_sup_trk;
+	__u16 no_sup_trk;
+	__u8 MDR_ID;
+	__u8 OBR_ID;
+	__u8 director;
+	__u8 rd_trk_set;
+	__u16 max_rec_zero;
+	__u8 reserved1;
+	__u8 RWANY_in_LR;
+	__u8 factor6;
+	__u8 factor7;
+	__u8 factor8;
+	__u8 reserved2[3];
+	__u8 reserved3[10];
+} __attribute__ ((packed, aligned (32))) 
+
+dasd_eckd_characteristics_t;
+
+#ifdef CONFIG_DASD_CKD
+struct dasd_ckd_characteristics {
+	char info[64];
+};
+
+#endif				/* CONFIG_DASD_CKD */
+
+#ifdef CONFIG_DASD_ECKD
+struct dasd_eckd_characteristics {
+	char info[64];
+};
+
+#endif				/* CONFIG_DASD_ECKD */
+
+typedef
+union {
+	char __attribute__ ((aligned (32))) bytes[64];
+#ifdef CONFIG_DASD_FBA
+	dasd_fba_characteristics_t fba;
+#endif				/* CONFIG_DASD_FBA */
+#ifdef CONFIG_DASD_CKD
+	struct dasd_ckd_characteristics ckd;
+#endif				/* CONFIG_DASD_CKD */
+#ifdef CONFIG_DASD_ECKD
+	dasd_eckd_characteristics_t eckd;
+#endif				/* CONFIG_DASD_ECKD */
+} __attribute__ ((aligned (32))) 
+
+dasd_characteristics_t;
+
+#define CQR_STATUS_EMPTY  0x00
+#define CQR_STATUS_FILLED 0x01
+#define CQR_STATUS_QUEUED 0x02
+#define CQR_STATUS_IN_IO  0x04
+#define CQR_STATUS_DONE   0x08
+#define CQR_STATUS_RETRY  0x10
+#define CQR_STATUS_ERROR  0x20
+#define CQR_STATUS_FAILED 0x40
+#define CQR_STATUS_SLEEP  0x80
+
+#define CQR_FLAGS_SLEEP   0x01
+#define CQR_FLAGS_WAIT    0x02
+#define CQR_FLAGS_NOLOCK  0x04
+#define CQR_FLAGS_NORETRY 0x08
+
+typedef
+struct cqr_t {
+	unsigned int    magic;    /* magic number should be "DASD" */
+	atomic_t status;	/* current status of request */
+	unsigned short retries; /* counter for retry in error case */
+	unsigned short cplength;/* Length of channel program  (CP) */
+	unsigned short devindex;/* device number */
+	unsigned short flags;    /* Flags for execution */
+	
+	void * data;		/* additional data area for CP */
+	ccw1_t *cpaddr;		/* Address of CP */
+	struct request *req;	/* backpointer to struct request */
+	struct cqr_t *next;     /* forward chain in chanq */
+	struct cqr_t *int4cqr;  /* which cqr ist the nect PCI for? */
+	unsigned long long buildclk;
+	unsigned long long startclk;
+	unsigned long long stopclk;
+	unsigned long long endclk;
+	devstat_t *dstat;	/* savearea for devstat */
+	spinlock_t lock;
+	int options;
+} __attribute__ ((packed)) 
+cqr_t;
+
+typedef
+struct {
+	unsigned long int kbytes;
+	unsigned int bp_sector;
+	unsigned int bp_block;
+	unsigned int blocks;
+	unsigned int s2b_shift;
+	unsigned int b2k_shift;
+	unsigned int first_sector;
+} dasd_sizes_t;
+
+#define DASD_CHANQ_ACTIVE 0x01
+#define DASD_CHANQ_BUSY 0x02
+typedef
+struct dasd_chanq_t {
+	volatile cqr_t *head;
+	volatile cqr_t *tail;
+	spinlock_t q_lock;	/* lock for queue operations */
+	spinlock_t f_lock;	/* lock for flag operations */
+	long lockflags;
+	atomic_t flags;
+	struct dasd_chanq_t *next_q;	/* pointer to next queue */
+} __attribute__ ((packed, aligned (16))) 
+dasd_chanq_t;
+
+typedef
+struct dasd_information_t {
+	devstat_t dev_status;
+	dasd_characteristics_t *rdc_data;
+	dasd_volume_label_t *label;
+	dasd_type_t type;
+	dev_info_t info;
+	dasd_sizes_t sizes;
+	dasd_chanq_t queue;
+	int open_count;
+	spinlock_t lock;
+	struct semaphore sem;
+	unsigned long flags;
+	int irq;
+	struct proc_dir_entry *proc_device;
+	union {
+		struct {
+			char dummy;
+		} fba;
+		struct {
+			char dummy;
+		} ckd;
+		struct {
+			int blk_per_trk;
+		} eckd;
+	} private;
+} dasd_information_t;
+
+typedef struct {
+	int start_unit;
+	int stop_unit;
+	int blksize;
+} format_data_t;
+
+typedef
+struct {
+	int (*ck_devinfo) (dev_info_t *);
+	cqr_t *(*get_req_ccw) (int, struct request *);
+	cqr_t *(*rw_label) (int, int, char *);
+	int (*ck_characteristics) (dasd_characteristics_t *);
+	int (*fill_sizes) (int);
+	int (*dasd_format) (int, format_data_t *);
+} dasd_operations_t;
+
+extern dasd_information_t *dasd_info[];
+
+#endif				/* DASD_TYPES_H */