diff options
Diffstat (limited to 'drivers/scsi/sd.h')
-rw-r--r-- | drivers/scsi/sd.h | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h index 7f43e6839bce..1080c85d97f8 100644 --- a/drivers/scsi/sd.h +++ b/drivers/scsi/sd.h @@ -188,68 +188,6 @@ static inline sector_t sectors_to_logical(struct scsi_device *sdev, sector_t sec return sector >> (ilog2(sdev->sector_size) - 9); } -/* - * Look up the DIX operation based on whether the command is read or - * write and whether dix and dif are enabled. - */ -static inline unsigned int sd_prot_op(bool write, bool dix, bool dif) -{ - /* Lookup table: bit 2 (write), bit 1 (dix), bit 0 (dif) */ - const unsigned int ops[] = { /* wrt dix dif */ - SCSI_PROT_NORMAL, /* 0 0 0 */ - SCSI_PROT_READ_STRIP, /* 0 0 1 */ - SCSI_PROT_READ_INSERT, /* 0 1 0 */ - SCSI_PROT_READ_PASS, /* 0 1 1 */ - SCSI_PROT_NORMAL, /* 1 0 0 */ - SCSI_PROT_WRITE_INSERT, /* 1 0 1 */ - SCSI_PROT_WRITE_STRIP, /* 1 1 0 */ - SCSI_PROT_WRITE_PASS, /* 1 1 1 */ - }; - - return ops[write << 2 | dix << 1 | dif]; -} - -/* - * Returns a mask of the protection flags that are valid for a given DIX - * operation. - */ -static inline unsigned int sd_prot_flag_mask(unsigned int prot_op) -{ - const unsigned int flag_mask[] = { - [SCSI_PROT_NORMAL] = 0, - - [SCSI_PROT_READ_STRIP] = SCSI_PROT_TRANSFER_PI | - SCSI_PROT_GUARD_CHECK | - SCSI_PROT_REF_CHECK | - SCSI_PROT_REF_INCREMENT, - - [SCSI_PROT_READ_INSERT] = SCSI_PROT_REF_INCREMENT | - SCSI_PROT_IP_CHECKSUM, - - [SCSI_PROT_READ_PASS] = SCSI_PROT_TRANSFER_PI | - SCSI_PROT_GUARD_CHECK | - SCSI_PROT_REF_CHECK | - SCSI_PROT_REF_INCREMENT | - SCSI_PROT_IP_CHECKSUM, - - [SCSI_PROT_WRITE_INSERT] = SCSI_PROT_TRANSFER_PI | - SCSI_PROT_REF_INCREMENT, - - [SCSI_PROT_WRITE_STRIP] = SCSI_PROT_GUARD_CHECK | - SCSI_PROT_REF_CHECK | - SCSI_PROT_REF_INCREMENT | - SCSI_PROT_IP_CHECKSUM, - - [SCSI_PROT_WRITE_PASS] = SCSI_PROT_TRANSFER_PI | - SCSI_PROT_GUARD_CHECK | - SCSI_PROT_REF_CHECK | - SCSI_PROT_REF_INCREMENT | - SCSI_PROT_IP_CHECKSUM, - }; - - return flag_mask[prot_op]; -} - #ifdef CONFIG_BLK_DEV_INTEGRITY extern void sd_dif_config_host(struct scsi_disk *); |