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-rw-r--r--kernel/Documentation/ABI/testing/sysfs-class-cxl43
1 files changed, 43 insertions, 0 deletions
diff --git a/kernel/Documentation/ABI/testing/sysfs-class-cxl b/kernel/Documentation/ABI/testing/sysfs-class-cxl
index d46bba801..b07e86d45 100644
--- a/kernel/Documentation/ABI/testing/sysfs-class-cxl
+++ b/kernel/Documentation/ABI/testing/sysfs-class-cxl
@@ -6,6 +6,17 @@ Example: The real path of the attribute /sys/class/cxl/afu0.0s/irqs_max is
Slave contexts (eg. /sys/class/cxl/afu0.0s):
+What: /sys/class/cxl/<afu>/afu_err_buf
+Date: September 2014
+Contact: linuxppc-dev@lists.ozlabs.org
+Description: read only
+ AFU Error Buffer contents. The contents of this file are
+ application specific and depends on the AFU being used.
+ Applications interacting with the AFU can use this attribute
+ to know about the current error condition and take appropriate
+ action like logging the event etc.
+
+
What: /sys/class/cxl/<afu>/irqs_max
Date: September 2014
Contact: linuxppc-dev@lists.ozlabs.org
@@ -15,6 +26,7 @@ Description: read/write
that hardware can support (eg. 2037). Write values will limit
userspace applications to that many userspace interrupts. Must
be >= irqs_min.
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/irqs_min
Date: September 2014
@@ -24,6 +36,7 @@ Description: read only
userspace must request on a CXL_START_WORK ioctl. Userspace may
omit the num_interrupts field in the START_WORK IOCTL to get
this minimum automatically.
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/mmio_size
Date: September 2014
@@ -31,6 +44,7 @@ Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Decimal value of the size of the MMIO space that may be mmaped
by userspace.
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/modes_supported
Date: September 2014
@@ -38,6 +52,7 @@ Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
List of the modes this AFU supports. One per line.
Valid entries are: "dedicated_process" and "afu_directed"
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/mode
Date: September 2014
@@ -46,6 +61,7 @@ Description: read/write
The current mode the AFU is using. Will be one of the modes
given in modes_supported. Writing will change the mode
provided that no user contexts are attached.
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/prefault_mode
@@ -59,6 +75,7 @@ Description: read/write
descriptor as an effective address and
prefault what it points to.
all: all segments process calling START_WORK maps.
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/reset
Date: September 2014
@@ -66,12 +83,14 @@ Contact: linuxppc-dev@lists.ozlabs.org
Description: write only
Writing 1 here will reset the AFU provided there are not
contexts active on the AFU.
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/api_version
Date: September 2014
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Decimal value of the current version of the kernel/user API.
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/api_version_compatible
Date: September 2014
@@ -79,6 +98,7 @@ Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Decimal value of the the lowest version of the userspace API
this this kernel supports.
+Users: https://github.com/ibm-capi/libcxl
AFU configuration records (eg. /sys/class/cxl/afu0.0/cr0):
@@ -92,6 +112,7 @@ Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Hexadecimal value of the vendor ID found in this AFU
configuration record.
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/cr<config num>/device
Date: February 2015
@@ -99,6 +120,7 @@ Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Hexadecimal value of the device ID found in this AFU
configuration record.
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/cr<config num>/class
Date: February 2015
@@ -106,6 +128,7 @@ Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Hexadecimal value of the class code found in this AFU
configuration record.
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>/cr<config num>/config
Date: February 2015
@@ -115,6 +138,7 @@ Description: read only
record. The format is expected to match the either the standard
or extended configuration space defined by the PCIe
specification.
+Users: https://github.com/ibm-capi/libcxl
@@ -126,18 +150,21 @@ Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Decimal value of the size of the MMIO space that may be mmaped
by userspace. This includes all slave contexts space also.
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>m/pp_mmio_len
Date: September 2014
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Decimal value of the Per Process MMIO space length.
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<afu>m/pp_mmio_off
Date: September 2014
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Decimal value of the Per Process MMIO space offset.
+Users: https://github.com/ibm-capi/libcxl
Card info (eg. /sys/class/cxl/card0)
@@ -147,12 +174,14 @@ Date: September 2014
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Identifies the CAIA Version the card implements.
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<card>/psl_revision
Date: September 2014
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Identifies the revision level of the PSL.
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<card>/base_image
Date: September 2014
@@ -162,6 +191,7 @@ Description: read only
that support loadable PSLs. For FPGAs this field identifies
the image contained in the on-adapter flash which is loaded
during the initial program load.
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<card>/image_loaded
Date: September 2014
@@ -169,6 +199,7 @@ Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Will return "user" or "factory" depending on the image loaded
onto the card.
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<card>/load_image_on_perst
Date: December 2014
@@ -183,6 +214,7 @@ Description: read/write
user or factory image to be loaded.
Default is to reload on PERST whichever image the card has
loaded.
+Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<card>/reset
Date: October 2014
@@ -190,3 +222,14 @@ Contact: linuxppc-dev@lists.ozlabs.org
Description: write only
Writing 1 will issue a PERST to card which may cause the card
to reload the FPGA depending on load_image_on_perst.
+Users: https://github.com/ibm-capi/libcxl
+
+What: /sys/class/cxl/<card>/perst_reloads_same_image
+Date: July 2015
+Contact: linuxppc-dev@lists.ozlabs.org
+Description: read/write
+ Trust that when an image is reloaded via PERST, it will not
+ have changed.
+ 0 = don't trust, the image may be different (default)
+ 1 = trust that the image will not change.
+Users: https://github.com/ibm-capi/libcxl