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25 lines
986 B
C
25 lines
986 B
C
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/**
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* This file contains a list of cherry-picked constants useful while dealing with SCSI subsystem
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*/
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#ifndef REDPILL_SCSIPARAM_H
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#define REDPILL_SCSIPARAM_H
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#include <linux/version.h> //KERNEL_VERSION_CODE, KERNEL_VERSION()
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#include <scsi/scsi.h> //SERVICE_ACTION_IN or SERVICE_ACTION_IN_16
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#define SCSI_RC16_LEN 32 //originally defined in drivers/scsi/sd.c as RC16_LEN
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#define SCSI_CMD_TIMEOUT (30 * HZ) //originally defined in drivers/scsi/sd.h as SD_TIMEOUT
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#define SCSI_CMD_MAX_RETRIES 5 //normal drives shouldn't fail the command even once
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#define SCSI_CAP_MAX_RETRIES 3
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#define SCSI_BUF_SIZE 512 //originally defined in drivers/scsi/sd.h as SD_BUF_SIZE
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//Old kernels used ambiguous constant: https://github.com/torvalds/linux/commit/eb846d9f147455e4e5e1863bfb5e31974bb69b7c
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#if LINUX_VERSION_CODE < KERNEL_VERSION(3,19,0)
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#define SCSI_SERVICE_ACTION_IN_16 SERVICE_ACTION_IN
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#else
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#define SCSI_SERVICE_ACTION_IN_16 SERVICE_ACTION_IN_16
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#endif
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#endif //REDPILL_SCSIPARAM_H
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