249 lines
4.4 KiB
HTML
249 lines
4.4 KiB
HTML
<HTML
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><HEAD
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><TITLE
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>host_status</TITLE
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
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"><LINK
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REL="HOME"
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TITLE="The Linux SCSI Generic (sg) HOWTO"
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HREF="index.html"><LINK
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TITLE="The sg_io_hdr_t structure in detail"
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TITLE="sb_len_wr"
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TITLE="driver_status"
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><TR
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><TH
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>The Linux SCSI Generic (sg) HOWTO</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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><TD
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WIDTH="80%"
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>Chapter 6. The sg_io_hdr_t structure in detail</TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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><DIV
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CLASS="SECT1"
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><H1
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CLASS="SECT1"
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><A
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NAME="AEN291">6.18. host_status</H1
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><P
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> These codes potentially come from the firmware on a host adapter
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or from one of several hosts that an adapter driver controls.
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The 'host_status' field has the following values whose #defines mimic
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those which are only visible within the kernel (with the "SG_ERR_"
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removed from the front of each define). A copy of these defines can be
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found in sg_err.h (see <A
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HREF="sg3_utils.html"
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>Appendix A</A
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>):
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<P
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></P
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><UL
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><LI
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><P
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> SG_ERR_DID_OK [0x00] NO error</P
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></LI
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><LI
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><P
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> SG_ERR_DID_NO_CONNECT [0x01] Couldn't connect before timeout period</P
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></LI
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><LI
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><P
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> SG_ERR_DID_BUS_BUSY [0x02] BUS stayed busy through time out period</P
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></LI
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><LI
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><P
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> SG_ERR_DID_TIME_OUT [0x03] TIMED OUT for other reason (often this
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an unexpected device selection timeout)</P
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></LI
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><LI
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><P
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> SG_ERR_DID_BAD_TARGET [0x04] BAD target, device not responding?</P
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></LI
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><LI
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><P
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> SG_ERR_DID_ABORT [0x05] Told to abort for some other reason. From
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lk 2.4.15 the SCSI subsystem supports 16 byte commands however few
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adapter drivers do. Those HBA drivers that don't support 16 byte
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commands will yield this error code if a 16 byte command is passed to
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a SCSI device they control.</P
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></LI
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><LI
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><P
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> SG_ERR_DID_PARITY [0x06] Parity error. Older SCSI parallel buses
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have a parity bit for error detection. This probably indicates
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a cable or termination problem.</P
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></LI
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><LI
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><P
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> SG_ERR_DID_ERROR [0x07] Internal error detected in the host adapter.
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This may not be fatal (and the command may have succeeded). The
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aic7xxx and sym53c8xx adapter drivers sometimes report this for
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data underruns or overruns.
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<A
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NAME="AEN312"
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HREF="#FTN.AEN312"
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>[1]</A
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></P
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></LI
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><LI
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><P
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> SG_ERR_DID_RESET [0x08] The SCSI bus (or this device) has been reset.
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Any SCSI device on a SCSI bus is capable of instigating a reset.</P
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></LI
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><LI
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><P
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> SG_ERR_DID_BAD_INTR [0x09] Got an interrupt we weren't expecting</P
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></LI
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><LI
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><P
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> SG_ERR_DID_PASSTHROUGH [0x0a] Force command past mid-layer</P
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></LI
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><LI
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><P
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> SG_ERR_DID_SOFT_ERROR [0x0b] The low level driver wants a retry</P
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></LI
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></UL
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>
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The type of host_status is unsigned short .</P
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></DIV
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><H3
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CLASS="FOOTNOTES"
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>Notes</H3
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><TABLE
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CLASS="FOOTNOTES"
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WIDTH="100%"
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><TR
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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WIDTH="5%"
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><A
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NAME="FTN.AEN312"
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HREF="x291.html#AEN312"
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>[1]</A
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></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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WIDTH="95%"
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><P
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>In some cases the sym53cxx driver reports a DID_ERROR when it internally
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rounds up an odd transfer length by 1. This is an example of a "non-error".</P
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></TD
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></TR
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></TABLE
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>sb_len_wr</TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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>driver_status</TD
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> |