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Message-ID: <20110819144424.15165.6621.stgit@beardog.cce.hp.com> Date: Fri, 19 Aug 2011 09:44:24 -0500 From: "Stephen M. Cameron" <scameron@...rdog.cce.hp.com> To: james.bottomley@...senpartnership.com Cc: stephenmcameron@...il.com, akpm@...ux-foundation.org, gregkh@...e.de, linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org Subject: [PATCH] scsi: document generic scsi host sysfs attributes From: Stephen M. Cameron <scameron@...rdog.cce.hp.com> Signed-off-by: Stephen M. Cameron <scameron@...rdog.cce.hp.com> --- Documentation/ABI/testing/sysfs-bus-scsi | 129 ++++++++++++++++++++++++++++++ 1 files changed, 129 insertions(+), 0 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-bus-scsi diff --git a/Documentation/ABI/testing/sysfs-bus-scsi b/Documentation/ABI/testing/sysfs-bus-scsi new file mode 100644 index 0000000..088d16a --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-scsi @@ -0,0 +1,129 @@ +What: /sys/bus/scsi/devices/host*/scsi_host/host*/unique_id +Date: February, 2003 +KernelVersion: Unknown +Contact: James Bottomley <James.Bottomley@...senPartnership.com> +Description: + Read only unsigned integer uniquely identifying the SCSI host + within the system. This value is assigned by the low level + driver. + +What: /sys/bus/scsi/devices/host*/scsi_host/host*/host_busy +Date: February 2003 +KernelVersion: Unknown +Contact: James Bottomley <James.Bottomley@...senPartnership.com> +Description: + Read only unsigned short integer indicating whether the SCSI + host is busy. + +What: /sys/bus/scsi/devices/host*/scsi_host/host*/cmd_per_lun +Date: February 2003 +KernelVersion: Unknown +Contact: James Bottomley <James.Bottomley@...senPartnership.com> +Description: + Read only short integer indicating how many concurrent + commands per logical unit the SCSI host supports. + +What: /sys/bus/scsi/devices/host*/scsi_host/host*/can_queue +Date: October, 2006 +KernelVersion: Unknown +Contact: James Bottomley <James.Bottomley@...senPartnership.com> +Description: + Read only short integer indicating the total number of + concurrent commands the SCSI host supports. + +What: /sys/bus/scsi/devices/host*/scsi_host/host*/sg_tablesize +Date: February, 2003 +KernelVersion: Unknown +Contact: James Bottomley <James.Bottomley@...senPartnership.com> +Description: + Read only unsigned short integer indicating how many scatter + gather entries are available for each command. + +What: /sys/bus/scsi/devices/host*/scsi_host/host*/sg_prot_tablesize +Date: September, 2010 +KernelVersion: Unknown +Contact: James Bottomley <James.Bottomley@...senPartnership.com> +Description: + Read only unsigned short integer which indicates how many + scatter gather entries are available for DIX integrity data. + +What: /sys/bus/scsi/devices/host*/scsi_host/host*/unchecked_isa_dma +Date: February, 2003 +KernelVersion: Unknown +Contact: James Bottomley <James.Bottomley@...senPartnership.com> +Description: + Read only integer which indicates whether the host is an + ancient ISA device which therefore requires extra bounce + buffering. + +What: /sys/bus/scsi/devices/host*/scsi_host/host*/proc_name +Date: March, 2004 +KernelVersion: Unknown +Contact: James Bottomley <James.Bottomley@...senPartnership.com> +Description: + Read only string which indicates the name of the proc + directory of a driver + +What: /sys/bus/scsi/devices/host*/scsi_host/host*/scan +Date: August, 2003 +KernelVersion: Unknown +Contact: James Bottomley <James.Bottomley@...senPartnership.com> +Description: + Write only attribute which causes the SCSI mid layer to + scan the SCSI host at the specified channel, bus, and id for + devices. The integer decimal value of -1 interpreted as + an unsigned integer (4294967295 on most architectures) may + be used as a wild card. For example: + echo 4294967295 4294967295 4294967295 > /sys/.../scan + +What: /sys/bus/scsi/devices/host*/scsi_host/host*/hstate +Date: February, 2008 +KernelVersion: Unknown +Contact: James Bottomley <James.Bottomley@...senPartnership.com> +Description: + String value which indicates the state of the SCSI host. + Possible values are: "created", "running", "cancel", + "deleted", "recovery", "cancel/recovery" and "deleted/recovery" + +What: /sys/bus/scsi/devices/host*/scsi_host/host*/supported_mode +Date: October, 2007 +KernelVersion: Unknown +Contact: James Bottomley <James.Bottomley@...senPartnership.com> +Description: + Read only string value which indicates the supported modes of + the SCSI host. Possible modes are: "Initiator" and "Target". + +What: /sys/bus/scsi/devices/host*/scsi_host/host*/active_mode +Date: October, 2007 +KernelVersion: Unknown +Contact: James Bottomley <James.Bottomley@...senPartnership.com> +Description: + Read only string value which indicates the currently active + mode of the SCSI host. Possible values are "Initiator", + "Target" and "unknown". + +What: /sys/bus/scsi/devices/host*/scsi_host/host*/prot_capabilities +Date: July, 2008 +KernelVersion: Unknown +Contact: James Bottomley <James.Bottomley@...senPartnership.com> +Description: + Read only unsigned integer bitmap which indicates what + data integrity capabilities the SCSI host supports. + Bit 0: T10 DIF type 1 + Bit 1: T10 DIF type 2 + Bit 2: T10 DIF type 3 + Bit 3: DIX between OS and HBA only. + Bit 4: DIX with DIF type 1 + Bit 5: DIX with DIF type 2 + Bit 6: DIX with DIF type 3 + +What: /sys/bus/scsi/devices/host*/scsi_host/host*/prot_guard_type +Date: July, 2008 +KernelVersion: Unknown +Contact: James Bottomley <James.Bottomley@...senPartnership.com> +Description: + Read only unsigned short bitmap value which indicates what + checksums DIX capable controllers implement. + Bit 0: DIX guard CRC. + Bit 1: DIX guard IP. + -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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