86b368a580
Future versions of gcc may remove initialization code for control blocks used by the diag250 inline assembly due to incompletely specified constraints. This may lead to erratic behavior. Fix the diag250 inline assembly constraints. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@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
3.0 KiB
C
150 lines
3.0 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: 1.8 $
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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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void *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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struct dasd_diag_bio *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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void *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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struct dasd_diag_bio *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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