diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-class-cxl')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-cxl | 67 |
1 files changed, 65 insertions, 2 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-cxl b/Documentation/ABI/testing/sysfs-class-cxl index 554405ec195..3680364b404 100644 --- a/Documentation/ABI/testing/sysfs-class-cxl +++ b/Documentation/ABI/testing/sysfs-class-cxl @@ -1,3 +1,9 @@ +Note: Attributes that are shared between devices are stored in the directory +pointed to by the symlink device/. +Example: The real path of the attribute /sys/class/cxl/afu0.0s/irqs_max is +/sys/class/cxl/afu0.0s/device/irqs_max, i.e. /sys/class/cxl/afu0.0/irqs_max. + + Slave contexts (eg. /sys/class/cxl/afu0.0s): What: /sys/class/cxl/<afu>/irqs_max @@ -67,7 +73,7 @@ Contact: linuxppc-dev@lists.ozlabs.org Description: read only Decimal value of the current version of the kernel/user API. -What: /sys/class/cxl/<afu>/api_version_com +What: /sys/class/cxl/<afu>/api_version_compatible Date: September 2014 Contact: linuxppc-dev@lists.ozlabs.org Description: read only @@ -75,6 +81,42 @@ Description: read only this this kernel supports. +AFU configuration records (eg. /sys/class/cxl/afu0.0/cr0): + +An AFU may optionally export one or more PCIe like configuration records, known +as AFU configuration records, which will show up here (if present). + +What: /sys/class/cxl/<afu>/cr<config num>/vendor +Date: February 2015 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Hexadecimal value of the vendor ID found in this AFU + configuration record. + +What: /sys/class/cxl/<afu>/cr<config num>/device +Date: February 2015 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Hexadecimal value of the device ID found in this AFU + configuration record. + +What: /sys/class/cxl/<afu>/cr<config num>/vendor +Date: February 2015 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Hexadecimal value of the class code found in this AFU + configuration record. + +What: /sys/class/cxl/<afu>/cr<config num>/config +Date: February 2015 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + This binary file provides raw access to the AFU configuration + record. The format is expected to match the either the standard + or extended configuration space defined by the PCIe + specification. + + Master contexts (eg. /sys/class/cxl/afu0.0m) @@ -106,7 +148,7 @@ Contact: linuxppc-dev@lists.ozlabs.org Description: read only Identifies the CAIA Version the card implements. -What: /sys/class/cxl/<card>/psl_version +What: /sys/class/cxl/<card>/psl_revision Date: September 2014 Contact: linuxppc-dev@lists.ozlabs.org Description: read only @@ -127,3 +169,24 @@ Contact: linuxppc-dev@lists.ozlabs.org Description: read only Will return "user" or "factory" depending on the image loaded onto the card. + +What: /sys/class/cxl/<card>/load_image_on_perst +Date: December 2014 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read/write + Valid entries are "none", "user", and "factory". + "none" means PERST will not cause image to be loaded to the + card. A power cycle is required to load the image. + "none" could be useful for debugging because the trace arrays + are preserved. + "user" and "factory" means PERST will cause either the user or + user or factory image to be loaded. + Default is to reload on PERST whichever image the card has + loaded. + +What: /sys/class/cxl/<card>/reset +Date: October 2014 +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. |