Based on kernel version 6.8. Page generated on 2024-03-11 21:26 EST.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 | What: /sys/bus/pci/devices/<BDF>/qat_rl/sla_op Date: January 2024 KernelVersion: 6.7 Contact: qat-linux@intel.com Description: (WO) This attribute is used to perform an operation on an SLA. The supported operations are: add, update, rm, rm_all, and get. Input values must be filled through the associated attribute in this group before a write to this file. If the operation completes successfully, the associated attributes will be updated. The associated attributes are: cir, pir, srv, rp, and id. Supported operations: * add: Creates a new SLA with the provided inputs from user. * Inputs: cir, pir, srv, and rp * Output: id * get: Returns the configuration of the specified SLA in id attribute * Inputs: id * Outputs: cir, pir, srv, and rp * update: Updates the SLA with new values set in the following attributes * Inputs: id, cir, and pir * rm: Removes the specified SLA in the id attribute. * Inputs: id * rm_all: Removes all the configured SLAs. * Inputs: None This attribute is only available for qat_4xxx devices. What: /sys/bus/pci/devices/<BDF>/qat_rl/rp Date: January 2024 KernelVersion: 6.7 Contact: qat-linux@intel.com Description: (RW) When read, reports the current assigned ring pairs for the queried SLA. When wrote to, configures the ring pairs associated to a new SLA. The value is a 64-bit bit mask and is written/displayed in hex. Each bit of this mask represents a single ring pair i.e., bit 1 == ring pair id 0; bit 3 == ring pair id 2. Selected ring pairs must to be assigned to a single service, i.e. the one provided with the srv attribute. The service assigned to a certain ring pair can be checked by querying the attribute qat/rp2srv. The maximum number of ring pairs is 4 per SLA. Applicability in sla_op: * WRITE: add operation * READ: get operation Example usage:: ## Read # echo 4 > /sys/bus/pci/devices/<BDF>/qat_rl/id # cat /sys/bus/pci/devices/<BDF>/qat_rl/rp 0x5 ## Write # echo 0x5 > /sys/bus/pci/devices/<BDF>/qat_rl/rp This attribute is only available for qat_4xxx devices. What: /sys/bus/pci/devices/<BDF>/qat_rl/id Date: January 2024 KernelVersion: 6.7 Contact: qat-linux@intel.com Description: (RW) If written to, the value is used to retrieve a particular SLA and operate on it. This is valid only for the following operations: update, rm, and get. A read of this attribute is only guaranteed to have correct data after creation of an SLA. Applicability in sla_op: * WRITE: rm and update operations * READ: add and get operations Example usage:: ## Read ## Set attributes e.g. cir, pir, srv, etc # echo "add" > /sys/bus/pci/devices/<BDF>/qat_rl/sla_op # cat /sys/bus/pci/devices/<BDF>/qat_rl/id 4 ## Write # echo 7 > /sys/bus/pci/devices/<BDF>/qat_rl/id # echo "get" > /sys/bus/pci/devices/<BDF>/qat_rl/sla_op # cat /sys/bus/pci/devices/<BDF>/qat_rl/rp 0x5 ## ring pair ID 0 and ring pair ID 2 This attribute is only available for qat_4xxx devices. What: /sys/bus/pci/devices/<BDF>/qat_rl/cir Date: January 2024 KernelVersion: 6.7 Contact: qat-linux@intel.com Description: (RW) Committed information rate (CIR). Rate guaranteed to be achieved by a particular SLA. The value is expressed in permille scale, i.e. 1000 refers to the maximum device throughput for a selected service. After sending a "get" to sla_op, this will be populated with the CIR for that queried SLA. Write to this file before sending an "add/update" sla_op, to set the SLA to the specified value. Applicability in sla_op: * WRITE: add and update operations * READ: get operation Example usage:: ## Write # echo 500 > /sys/bus/pci/devices/<BDF>/qat_rl/cir # echo "add" /sys/bus/pci/devices/<BDF>/qat_rl/sla_op ## Read # echo 4 > /sys/bus/pci/devices/<BDF>/qat_rl/id # echo "get" > /sys/bus/pci/devices/<BDF>/qat_rl/sla_op # cat /sys/bus/pci/devices/<BDF>/qat_rl/cir 500 This attribute is only available for qat_4xxx devices. What: /sys/bus/pci/devices/<BDF>/qat_rl/pir Date: January 2024 KernelVersion: 6.7 Contact: qat-linux@intel.com Description: (RW) Peak information rate (PIR). The maximum rate that can be achieved by that particular SLA. An SLA can reach a value between CIR and PIR when the device is not fully utilized by requests from other users (assigned to different SLAs). After sending a "get" to sla_op, this will be populated with the PIR for that queried SLA. Write to this file before sending an "add/update" sla_op, to set the SLA to the specified value. Applicability in sla_op: * WRITE: add and update operations * READ: get operation Example usage:: ## Write # echo 750 > /sys/bus/pci/devices/<BDF>/qat_rl/pir # echo "add" > /sys/bus/pci/devices/<BDF>/qat_rl/sla_op ## Read # echo 4 > /sys/bus/pci/devices/<BDF>/qat_rl/id # echo "get" > /sys/bus/pci/devices/<BDF>/qat_rl/sla_op # cat /sys/bus/pci/devices/<BDF>/qat_rl/pir 750 This attribute is only available for qat_4xxx devices. What: /sys/bus/pci/devices/<BDF>/qat_rl/srv Date: January 2024 KernelVersion: 6.7 Contact: qat-linux@intel.com Description: (RW) Service (SRV). Represents the service (sym, asym, dc) associated to an SLA. Can be written to or queried to set/show the SRV type for an SLA. The SRV attribute is used to specify the SRV type before adding an SLA. After an SLA is configured, reports the service associated to that SLA. Applicability in sla_op: * WRITE: add and update operations * READ: get operation Example usage:: ## Write # echo "dc" > /sys/bus/pci/devices/<BDF>/qat_rl/srv # echo "add" > /sys/bus/pci/devices/<BDF>/qat_rl/sla_op # cat /sys/bus/pci/devices/<BDF>/qat_rl/id 4 ## Read # echo 4 > /sys/bus/pci/devices/<BDF>/qat_rl/id # echo "get" > /sys/bus/pci/devices/<BDF>/qat_rl/sla_op # cat /sys/bus/pci/devices/<BDF>/qat_rl/srv dc This attribute is only available for qat_4xxx devices. What: /sys/bus/pci/devices/<BDF>/qat_rl/cap_rem Date: January 2024 KernelVersion: 6.7 Contact: qat-linux@intel.com Description: (RW) This file will return the remaining capability for a particular service/sla. This is the remaining value that a new SLA can be set to or a current SLA can be increased with. Example usage:: # echo "asym" > /sys/bus/pci/devices/<BDF>/qat_rl/cap_rem # cat /sys/bus/pci/devices/<BDF>/qat_rl/cap_rem 250 # echo 250 > /sys/bus/pci/devices/<BDF>/qat_rl/cir # echo "add" > /sys/bus/pci/devices/<BDF>/qat_rl/sla_op # cat /sys/bus/pci/devices/<BDF>/qat_rl/cap_rem 0 This attribute is only available for qat_4xxx devices. |