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author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-05-03 20:11:56 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-05-03 20:11:56 +0200 |
commit | 7994beabfbb9a15c069eba7833a00f5ff4da1172 (patch) | |
tree | d4c6a163f968c99ac4987cc99a93231a7ee51dc3 /Documentation/ABI/stable | |
parent | Merge tag 'for-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pate... (diff) | |
parent | dmaengine: idxd: add per wq PRS disable (diff) | |
download | linux-7994beabfbb9a15c069eba7833a00f5ff4da1172.tar.xz linux-7994beabfbb9a15c069eba7833a00f5ff4da1172.zip |
Merge tag 'dmaengine-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine updates from Vinod Koul:
"New support:
- Apple admac t8112 device support
- StarFive JH7110 DMA controller
Updates:
- Big pile of idxd updates to support IAA 2.0 device capabilities,
DSA 2.0 Event Log and completion record faulting features and
new DSA operations
- at_xdmac supend & resume updates and driver code cleanup
- k3-udma supend & resume support
- k3-psil thread support for J784s4"
* tag 'dmaengine-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (57 commits)
dmaengine: idxd: add per wq PRS disable
dmaengine: idxd: add pid to exported sysfs attribute for opened file
dmaengine: idxd: expose fault counters to sysfs
dmaengine: idxd: add a device to represent the file opened
dmaengine: idxd: add per file user counters for completion record faults
dmaengine: idxd: process batch descriptor completion record faults
dmaengine: idxd: add descs_completed field for completion record
dmaengine: idxd: process user page faults for completion record
dmaengine: idxd: add idxd_copy_cr() to copy user completion record during page fault handling
dmaengine: idxd: create kmem cache for event log fault items
dmaengine: idxd: add per DSA wq workqueue for processing cr faults
dmanegine: idxd: add debugfs for event log dump
dmaengine: idxd: add interrupt handling for event log
dmaengine: idxd: setup event log configuration
dmaengine: idxd: add event log size sysfs attribute
dmaengine: idxd: make misc interrupt one shot
dt-bindings: dma: snps,dw-axi-dmac: constrain the items of resets for JH7110 dma
dt-bindings: dma: Drop unneeded quotes
dmaengine: at_xdmac: align declaration of ret with the rest of variables
dmaengine: at_xdmac: add a warning message regarding for unpaused channels
...
Diffstat (limited to 'Documentation/ABI/stable')
-rw-r--r-- | Documentation/ABI/stable/sysfs-driver-dma-idxd | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/Documentation/ABI/stable/sysfs-driver-dma-idxd b/Documentation/ABI/stable/sysfs-driver-dma-idxd index 3becc9a82bdf..534b7a3d59fc 100644 --- a/Documentation/ABI/stable/sysfs-driver-dma-idxd +++ b/Documentation/ABI/stable/sysfs-driver-dma-idxd @@ -136,6 +136,22 @@ Description: The last executed device administrative command's status/error. Also last configuration error overloaded. Writing to it will clear the status. +What: /sys/bus/dsa/devices/dsa<m>/iaa_cap +Date: Sept 14, 2022 +KernelVersion: 6.0.0 +Contact: dmaengine@vger.kernel.org +Description: IAA (IAX) capability mask. Exported to user space for application + consumption. This attribute should only be visible on IAA devices + that are version 2 or later. + +What: /sys/bus/dsa/devices/dsa<m>/event_log_size +Date: Sept 14, 2022 +KernelVersion: 6.4.0 +Contact: dmaengine@vger.kernel.org +Description: The event log size to be configured. Default is 64 entries and + occupies 4k size if the evl entry is 64 bytes. It's visible + only on platforms that support the capability. + What: /sys/bus/dsa/devices/wq<m>.<n>/block_on_fault Date: Oct 27, 2020 KernelVersion: 5.11.0 @@ -219,6 +235,16 @@ Contact: dmaengine@vger.kernel.org Description: Indicate whether ATS disable is turned on for the workqueue. 0 indicates ATS is on, and 1 indicates ATS is off for the workqueue. +What: /sys/bus/dsa/devices/wq<m>.<n>/prs_disable +Date: Sept 14, 2022 +KernelVersion: 6.4.0 +Contact: dmaengine@vger.kernel.org +Description: Controls whether PRS disable is turned on for the workqueue. + 0 indicates PRS is on, and 1 indicates PRS is off for the + workqueue. This option overrides block_on_fault attribute + if set. It's visible only on platforms that support the + capability. + What: /sys/bus/dsa/devices/wq<m>.<n>/occupancy Date May 25, 2021 KernelVersion: 5.14.0 @@ -302,3 +328,28 @@ Description: Allows control of the number of batch descriptors that can be 1 (1/2 of max value), 2 (1/4 of the max value), and 3 (1/8 of the max value). It's visible only on platforms that support the capability. + +What: /sys/bus/dsa/devices/wq<m>.<n>/dsa<x>\!wq<m>.<n>/file<y>/cr_faults +Date: Sept 14, 2022 +KernelVersion: 6.4.0 +Contact: dmaengine@vger.kernel.org +Description: Show the number of Completion Record (CR) faults this application + has caused. + +What: /sys/bus/dsa/devices/wq<m>.<n>/dsa<x>\!wq<m>.<n>/file<y>/cr_fault_failures +Date: Sept 14, 2022 +KernelVersion: 6.4.0 +Contact: dmaengine@vger.kernel.org +Description: Show the number of Completion Record (CR) faults failures that this + application has caused. The failure counter is incremented when the + driver cannot fault in the address for the CR. Typically this is caused + by a bad address programmed in the submitted descriptor or a malicious + submitter is using bad CR address on purpose. + +What: /sys/bus/dsa/devices/wq<m>.<n>/dsa<x>\!wq<m>.<n>/file<y>/pid +Date: Sept 14, 2022 +KernelVersion: 6.4.0 +Contact: dmaengine@vger.kernel.org +Description: Show the process id of the application that opened the file. This is + helpful information for a monitor daemon that wants to kill the + application that opened the file. |