1 What: /sys/bus/pci/devices/<BDF>/qat 1 What: /sys/bus/pci/devices/<BDF>/qat/state
2 Date: June 2022 2 Date: June 2022
3 KernelVersion: 6.0 3 KernelVersion: 6.0
4 Contact: qat-linux@intel.com 4 Contact: qat-linux@intel.com
5 Description: (RW) Reports the current state 5 Description: (RW) Reports the current state of the QAT device. Write to
6 the file to start or stop the 6 the file to start or stop the device.
7 7
8 The values are: 8 The values are:
9 9
10 * up: the device is up and run 10 * up: the device is up and running
11 * down: the device is down 11 * down: the device is down
12 12
13 13
14 It is possible to transition t 14 It is possible to transition the device from up to down only
15 if the device is up and vice v 15 if the device is up and vice versa.
16 16
17 This attribute is only availab 17 This attribute is only available for qat_4xxx devices.
18 18
19 What: /sys/bus/pci/devices/<BDF>/qat 19 What: /sys/bus/pci/devices/<BDF>/qat/cfg_services
20 Date: June 2022 20 Date: June 2022
21 KernelVersion: 6.0 21 KernelVersion: 6.0
22 Contact: qat-linux@intel.com 22 Contact: qat-linux@intel.com
23 Description: (RW) Reports the current confi 23 Description: (RW) Reports the current configuration of the QAT device.
24 Write to the file to change th 24 Write to the file to change the configured services.
25 25
26 The values are: 26 The values are:
27 27
28 * sym;asym: the device is conf 28 * sym;asym: the device is configured for running crypto
29 services 29 services
30 * asym;sym: identical to sym;a <<
31 * dc: the device is configured 30 * dc: the device is configured for running compression services
32 * dcc: identical to dc but ena <<
33 hash then compression. If th <<
34 * sym: the device is configure <<
35 services <<
36 * asym: the device is configur <<
37 services <<
38 * asym;dc: the device is confi <<
39 crypto services and compress <<
40 * dc;asym: identical to asym;d <<
41 * sym;dc: the device is config <<
42 services and compression ser <<
43 * dc;sym: identical to sym;dc <<
44 31
45 It is possible to set the conf 32 It is possible to set the configuration only if the device
46 is in the `down` state (see /s 33 is in the `down` state (see /sys/bus/pci/devices/<BDF>/qat/state)
47 34
48 The following example shows ho 35 The following example shows how to change the configuration of
49 a device configured for runnin 36 a device configured for running crypto services in order to
50 run data compression:: 37 run data compression::
51 38
52 # cat /sys/bus/pci/dev 39 # cat /sys/bus/pci/devices/<BDF>/qat/state
53 up 40 up
54 # cat /sys/bus/pci/dev 41 # cat /sys/bus/pci/devices/<BDF>/qat/cfg_services
55 sym;asym 42 sym;asym
56 # echo down > /sys/bus 43 # echo down > /sys/bus/pci/devices/<BDF>/qat/state
57 # echo dc > /sys/bus/p 44 # echo dc > /sys/bus/pci/devices/<BDF>/qat/cfg_services
58 # echo up > /sys/bus/p 45 # echo up > /sys/bus/pci/devices/<BDF>/qat/state
59 # cat /sys/bus/pci/dev 46 # cat /sys/bus/pci/devices/<BDF>/qat/cfg_services
60 dc 47 dc
61 <<
62 This attribute is only availab <<
63 <<
64 What: /sys/bus/pci/devices/<BDF>/qat <<
65 Date: June 2023 <<
66 KernelVersion: 6.5 <<
67 Contact: qat-linux@intel.com <<
68 Description: (RW) This configuration option <<
69 the MAX power state. <<
70 If idle support is enabled the <<
71 idle, otherwise will stay in t <<
72 Write to the file to enable or <<
73 <<
74 The values are: <<
75 <<
76 * 0: idle support is disabled <<
77 * 1: idle support is enabled <<
78 <<
79 Default value is 1. <<
80 <<
81 It is possible to set the pm_i <<
82 is in the `down` state (see /s <<
83 <<
84 The following example shows ho <<
85 a device:: <<
86 <<
87 # cat /sys/bus/pci/dev <<
88 up <<
89 # cat /sys/bus/pci/dev <<
90 1 <<
91 # echo down > /sys/bus <<
92 # echo 0 > /sys/bus/pc <<
93 # echo up > /sys/bus/p <<
94 # cat /sys/bus/pci/dev <<
95 0 <<
96 <<
97 This attribute is only availab <<
98 <<
99 What: /sys/bus/pci/devices/<BDF>/qat <<
100 Date: January 2024 <<
101 KernelVersion: 6.7 <<
102 Contact: qat-linux@intel.com <<
103 Description: <<
104 (RW) This attribute provides a <<
105 specific ring pair for the typ <<
106 configured for. <<
107 <<
108 When written to, the value is <<
109 read operation. Allowed values <<
110 N is the max number of ring pa <<
111 can be queried using the attri <<
112 <<
113 A read returns the service ass <<
114 <<
115 The values are: <<
116 <<
117 * dc: the ring pair is configu <<
118 * sym: the ring pair is config <<
119 services <<
120 * asym: the ring pair is confi <<
121 services <<
122 <<
123 Example usage:: <<
124 <<
125 # echo 1 > /sys/bus/pc <<
126 # cat /sys/bus/pci/dev <<
127 sym <<
128 <<
129 This attribute is only availab <<
130 <<
131 What: /sys/bus/pci/devices/<BDF>/qat <<
132 Date: January 2024 <<
133 KernelVersion: 6.7 <<
134 Contact: qat-linux@intel.com <<
135 Description: <<
136 (RO) Returns the number of rin <<
137 <<
138 Example usage:: <<
139 <<
140 # cat /sys/bus/pci/dev <<
141 64 <<
142 <<
143 This attribute is only availab <<
144 <<
145 What: /sys/bus/pci/devices/<BDF>/qat <<
146 Date: May 2024 <<
147 KernelVersion: 6.9 <<
148 Contact: qat-linux@intel.com <<
149 Description: (RW) Reports the current state <<
150 for a QAT device <<
151 <<
152 Write to the attribute to enab <<
153 <<
154 Device auto reset is disabled <<
155 <<
156 The values are: <<
157 <<
158 * 1/Yy/on: auto reset enabled. <<
159 unrecoverable error, it will <<
160 * 0/Nn/off: auto reset disable <<
161 unrecoverable error, it will <<
162 48
163 This attribute is only availab 49 This attribute is only available for qat_4xxx devices.
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