summaryrefslogtreecommitdiff
path: root/Documentation/ABI
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2015-02-11 18:15:38 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-11 18:15:38 -0800
commitd3f180ea1a44aecba1b0dab2a253428e77f906bf (patch)
tree0be6eaf1eb3fd32c934bd070a3d758696f417c93 /Documentation/ABI
parent6b00f7efb5303418c231994c91fb8239f5ada260 (diff)
parenta6130ed253a931d2169c26ab0958d81b0dce4d6e (diff)
Merge tag 'powerpc-3.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux
Pull powerpc updates from Michael Ellerman: - Update of all defconfigs - Addition of a bunch of config options to modernise our defconfigs - Some PS3 updates from Geoff - Optimised memcmp for 64 bit from Anton - Fix for kprobes that allows 'perf probe' to work from Naveen - Several cxl updates from Ian & Ryan - Expanded support for the '24x7' PMU from Cody & Sukadev - Freescale updates from Scott: "Highlights include 8xx optimizations, some more work on datapath device tree content, e300 machine check support, t1040 corenet error reporting, and various cleanups and fixes" * tag 'powerpc-3.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (102 commits) cxl: Add missing return statement after handling AFU errror cxl: Fail AFU initialisation if an invalid configuration record is found cxl: Export optional AFU configuration record in sysfs powerpc/mm: Warn on flushing tlb page in kernel context powerpc/powernv: Add OPAL soft-poweroff routine powerpc/perf/hv-24x7: Document sysfs event description entries powerpc/perf/hv-gpci: add the remaining gpci requests powerpc/perf/{hv-gpci, hv-common}: generate requests with counters annotated powerpc/perf/hv-24x7: parse catalog and populate sysfs with events perf: define EVENT_DEFINE_RANGE_FORMAT_LITE helper perf: add PMU_EVENT_ATTR_STRING() helper perf: provide sysfs_show for struct perf_pmu_events_attr powerpc/kernel: Avoid initializing device-tree pointer twice powerpc: Remove old compile time disabled syscall tracing code powerpc/kernel: Make syscall_exit a local label cxl: Fix device_node reference counting powerpc/mm: bail out early when flushing TLB page powerpc: defconfigs: add MTD_SPI_NOR (new dependency for M25P80) perf/powerpc: reset event hw state when adding it to the PMU powerpc/qe: Use strlcpy() ...
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x722
-rw-r--r--Documentation/ABI/testing/sysfs-class-cxl67
2 files changed, 87 insertions, 2 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7 b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7
index 32f3f5f8bba2..f893337570c1 100644
--- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7
@@ -21,3 +21,25 @@ Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
Description:
Exposes the "version" field of the 24x7 catalog. This is also
extractable from the provided binary "catalog" sysfs entry.
+
+What: /sys/bus/event_source/devices/hv_24x7/event_descs/<event-name>
+Date: February 2014
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
+Description:
+ Provides the description of a particular event as provided by
+ the firmware. If firmware does not provide a description, no
+ file will be created.
+
+ Note that the event-name lacks the domain suffix appended for
+ events in the events/ dir.
+
+What: /sys/bus/event_source/devices/hv_24x7/event_long_descs/<event-name>
+Date: February 2014
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
+Description:
+ Provides the "long" description of a particular event as
+ provided by the firmware. If firmware does not provide a
+ description, no file will be created.
+
+ Note that the event-name lacks the domain suffix appended for
+ events in the events/ dir.
diff --git a/Documentation/ABI/testing/sysfs-class-cxl b/Documentation/ABI/testing/sysfs-class-cxl
index 554405ec1955..3680364b4048 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.