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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2019-09-16 19:56:27 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2019-09-16 19:56:27 +0300 |
| commit | 0898782247ae533d1f4e47a06bc5d4870931b284 (patch) | |
| tree | 21f75cc590542a870f42350b9410fc0588f02b79 /Documentation/ABI/testing/debugfs-driver-habanalabs | |
| parent | 0c043d70d04711fe6c380df9065fdc44192c49bf (diff) | |
| parent | 410f25de467ee94c1a577c6ee7370c37b376c17c (diff) | |
| download | linux-0898782247ae533d1f4e47a06bc5d4870931b284.tar.xz | |
Merge branch 'next' into for-linus
Prepare input updates for 5.4 merge window.
Diffstat (limited to 'Documentation/ABI/testing/debugfs-driver-habanalabs')
| -rw-r--r-- | Documentation/ABI/testing/debugfs-driver-habanalabs | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/Documentation/ABI/testing/debugfs-driver-habanalabs b/Documentation/ABI/testing/debugfs-driver-habanalabs index 2f5b80be07a3..f0ac14b70ecb 100644 --- a/Documentation/ABI/testing/debugfs-driver-habanalabs +++ b/Documentation/ABI/testing/debugfs-driver-habanalabs @@ -3,7 +3,10 @@ Date: Jan 2019 KernelVersion: 5.1 Contact: oded.gabbay@gmail.com Description: Sets the device address to be used for read or write through - PCI bar. The acceptable value is a string that starts with "0x" + PCI bar, or the device VA of a host mapped memory to be read or + written directly from the host. The latter option is allowed + only when the IOMMU is disabled. + The acceptable value is a string that starts with "0x" What: /sys/kernel/debug/habanalabs/hl<n>/command_buffers Date: Jan 2019 @@ -33,10 +36,12 @@ Contact: oded.gabbay@gmail.com Description: Allows the root user to read or write directly through the device's PCI bar. Writing to this file generates a write transaction while reading from the file generates a read - transcation. This custom interface is needed (instead of using + transaction. This custom interface is needed (instead of using the generic Linux user-space PCI mapping) because the DDR bar is very small compared to the DDR memory and only the driver can - move the bar before and after the transaction + move the bar before and after the transaction. + If the IOMMU is disabled, it also allows the root user to read + or write from the host a device VA of a host mapped memory What: /sys/kernel/debug/habanalabs/hl<n>/device Date: Jan 2019 @@ -46,6 +51,13 @@ Description: Enables the root user to set the device to specific state. Valid values are "disable", "enable", "suspend", "resume". User can read this property to see the valid values +What: /sys/kernel/debug/habanalabs/hl<n>/engines +Date: Jul 2019 +KernelVersion: 5.3 +Contact: oded.gabbay@gmail.com +Description: Displays the status registers values of the device engines and + their derived idle status + What: /sys/kernel/debug/habanalabs/hl<n>/i2c_addr Date: Jan 2019 KernelVersion: 5.1 |