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sysfs-driver-qat

sysfs-driver-qat 1.5 KB
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  1. What:		/sys/bus/pci/devices/<BDF>/qat/state
    2. 

  2. Date:		June 2022
    3. 

  3. KernelVersion:	5.20
    4. 

  4. Contact:	[email protected]
    5. 

  5. Description:	(RW) Reports the current state of the QAT device. Write to
    6. 

  6. 		the file to start or stop the device.
    7. 

  7. 

  8. 		The values are:
    9. 

  9. 

  10. 		* up: the device is up and running
    11. 

  11. 		* down: the device is down
    12. 

  12. 

  13. 

  14. 		It is possible to transition the device from up to down only
    15. 

  15. 		if the device is up and vice versa.
    16. 

  16. 

  17. 		This attribute is only available for qat_4xxx devices.
    18. 

  18. 

  19. What:		/sys/bus/pci/devices/<BDF>/qat/cfg_services
    20. 

  20. Date:		June 2022
    21. 

  21. KernelVersion:	5.20
    22. 

  22. Contact:	[email protected]
    23. 

  23. Description:	(RW) Reports the current configuration of the QAT device.
    24. 

  24. 		Write to the file to change the configured services.
    25. 

  25. 

  26. 		The values are:
    27. 

  27. 

  28. 		* sym;asym: the device is configured for running crypto
    29. 

  29. 		  services
    30. 

  30. 		* dc: the device is configured for running compression services
    31. 

  31. 

  32. 		It is possible to set the configuration only if the device
    33. 

  33. 		is in the `down` state (see /sys/bus/pci/devices/<BDF>/qat/state)
    34. 

  34. 

  35. 		The following example shows how to change the configuration of
    36. 

  36. 		a device configured for running crypto services in order to
    37. 

  37. 		run data compression::
    38. 

  38. 

  39. 			# cat /sys/bus/pci/devices/<BDF>/qat/state
    40. 

  40. 			up
    41. 

  41. 			# cat /sys/bus/pci/devices/<BDF>/qat/cfg_services
    42. 

  42. 			sym;asym
    43. 

  43. 			# echo down > /sys/bus/pci/devices/<BDF>/qat/state
    44. 

  44. 			# echo dc > /sys/bus/pci/devices/<BDF>/qat/cfg_services
    45. 

  45. 			# echo up > /sys/bus/pci/devices/<BDF>/qat/state
    46. 

  46. 			# cat /sys/bus/pci/devices/<BDF>/qat/cfg_services
    47. 

  47. 			dc
    48. 

  48. 

  49. 		This attribute is only available for qat_4xxx devices.
    50.