![Horst Hummel](/assets/img/avatar_default.png)
Add support for diag 250 access to dasd devices for 64 bit kernels. In addition fix detach/attach for diag disks. The VM control block needs to get recreated by a call to mdsk_init_io. Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
150 lines
2.9 KiB
C
150 lines
2.9 KiB
C
/*
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* File...........: linux/drivers/s390/block/dasd_diag.h
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* Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
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* Based on.......: linux/drivers/s390/block/mdisk.h
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* ...............: by Hartmunt Penner <hpenner@de.ibm.com>
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* Bugreports.to..: <Linux390@de.ibm.com>
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* (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
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*
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* $Revision: 1.7 $
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*/
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#define MDSK_WRITE_REQ 0x01
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#define MDSK_READ_REQ 0x02
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#define INIT_BIO 0x00
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#define RW_BIO 0x01
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#define TERM_BIO 0x02
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#define DEV_CLASS_FBA 0x01
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#define DEV_CLASS_ECKD 0x04
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#define DASD_DIAG_LC_INT_CODE 132
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#define DASD_DIAG_LC_INT_STATUS 133
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#define DASD_DIAG_LC_INT_PARM_31BIT 128
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#define DASD_DIAG_LC_INT_PARM_64BIT 4536
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#define DASD_DIAG_CODE_31BIT 0x03
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#define DASD_DIAG_CODE_64BIT 0x07
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#define DASD_DIAG_RWFLAG_ASYNC 0x02
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#define DASD_DIAG_RWFLAG_NOCACHE 0x01
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#define DASD_DIAG_FLAGA_FORMAT_64BIT 0x80
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struct dasd_diag_characteristics {
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u16 dev_nr;
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u16 rdc_len;
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u8 vdev_class;
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u8 vdev_type;
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u8 vdev_status;
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u8 vdev_flags;
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u8 rdev_class;
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u8 rdev_type;
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u8 rdev_model;
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u8 rdev_features;
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} __attribute__ ((packed, aligned(4)));
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struct dasd_diag_cms_label {
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u8 label_id[4];
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u8 vol_id[6];
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u16 version_id;
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u32 block_size;
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u32 origin_ptr;
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u32 usable_count;
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u32 formatted_count;
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u32 block_count;
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u32 used_count;
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u32 fst_size;
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u32 fst_count;
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u8 format_date[6];
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u8 reserved1[2];
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u32 disk_offset;
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u32 map_block;
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u32 hblk_disp;
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u32 user_disp;
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u8 reserved2[4];
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u8 segment_name[8];
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} __attribute__ ((packed));
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#ifdef CONFIG_ARCH_S390X
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#define DASD_DIAG_FLAGA_DEFAULT DASD_DIAG_FLAGA_FORMAT_64BIT
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typedef u64 blocknum_t;
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typedef s64 sblocknum_t;
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struct dasd_diag_bio {
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u8 type;
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u8 status;
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u8 spare1[2];
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u32 alet;
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blocknum_t block_number;
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u64 buffer;
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} __attribute__ ((packed, aligned(8)));
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struct dasd_diag_init_io {
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u16 dev_nr;
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u8 flaga;
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u8 spare1[21];
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u32 block_size;
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u8 spare2[4];
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blocknum_t offset;
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sblocknum_t start_block;
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blocknum_t end_block;
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u8 spare3[8];
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} __attribute__ ((packed, aligned(8)));
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struct dasd_diag_rw_io {
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u16 dev_nr;
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u8 flaga;
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u8 spare1[21];
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u8 key;
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u8 flags;
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u8 spare2[2];
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u32 block_count;
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u32 alet;
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u8 spare3[4];
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u64 interrupt_params;
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u64 bio_list;
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u8 spare4[8];
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} __attribute__ ((packed, aligned(8)));
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#else /* CONFIG_ARCH_S390X */
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#define DASD_DIAG_FLAGA_DEFAULT 0x0
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typedef u32 blocknum_t;
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typedef s32 sblocknum_t;
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struct dasd_diag_bio {
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u8 type;
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u8 status;
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u16 spare1;
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blocknum_t block_number;
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u32 alet;
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u32 buffer;
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} __attribute__ ((packed, aligned(8)));
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struct dasd_diag_init_io {
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u16 dev_nr;
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u8 flaga;
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u8 spare1[21];
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u32 block_size;
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blocknum_t offset;
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sblocknum_t start_block;
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blocknum_t end_block;
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u8 spare2[24];
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} __attribute__ ((packed, aligned(8)));
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struct dasd_diag_rw_io {
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u16 dev_nr;
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u8 flaga;
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u8 spare1[21];
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u8 key;
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u8 flags;
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u8 spare2[2];
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u32 block_count;
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u32 alet;
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u32 bio_list;
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u32 interrupt_params;
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u8 spare3[20];
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} __attribute__ ((packed, aligned(8)));
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#endif /* CONFIG_ARCH_S390X */
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