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habanalabs: add hwmgr module for gaudi

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The hwmgr module is responsible for messages sent to GAUDI F/W that are
not common to all habanalabs ASICs.

In GAUDI, we provide the user a simplified mode of controlling the ASIC
clock frequency. Instead of three different clocks, we present a single
clock property that the user can configure via sysfs.

Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Oded Gabbay
2020-05-11 10:41:37 +03:00
parent ac0ae6a96a
commit bcaf415204
5 changed files with 147 additions and 4 deletions
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17
Documentation/ABI/testing/sysfs-driver-habanalabs
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@@ -10,6 +10,23 @@ KernelVersion: 5.1
Contact: oded.gabbay@gmail.com
Description: Version of the application running on the device's CPU
What: /sys/class/habanalabs/hl<n>/clk_max_freq_mhz
Date: Jun 2019
KernelVersion: not yet upstreamed
Contact: oded.gabbay@gmail.com
Description: Allows the user to set the maximum clock frequency, in MHz.
The device clock might be set to lower value than the maximum.
The user should read the clk_cur_freq_mhz to see the actual
frequency value of the device clock. This property is valid
only for the Gaudi ASIC family
What: /sys/class/habanalabs/hl<n>/clk_cur_freq_mhz
Date: Jun 2019
KernelVersion: not yet upstreamed
Contact: oded.gabbay@gmail.com
Description: Displays the current frequency, in MHz, of the device clock.
This property is valid only for the Gaudi ASIC family
What: /sys/class/habanalabs/hl<n>/cpld_ver
Date: Jan 2019
KernelVersion: 5.1