cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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sysfs-driver-dma-idxd (9521B)


      1What:		/sys/bus/dsa/devices/dsa<m>/version
      2Date:		Apr 15, 2020
      3KernelVersion:	5.8.0
      4Contact:	dmaengine@vger.kernel.org
      5Description:	The hardware version number.
      6
      7What:           /sys/bus/dsa/devices/dsa<m>/cdev_major
      8Date:           Oct 25, 2019
      9KernelVersion:  5.6.0
     10Contact:        dmaengine@vger.kernel.org
     11Description:	The major number that the character device driver assigned to
     12		this device.
     13
     14What:           /sys/bus/dsa/devices/dsa<m>/errors
     15Date:           Oct 25, 2019
     16KernelVersion:  5.6.0
     17Contact:        dmaengine@vger.kernel.org
     18Description:    The error information for this device.
     19
     20What:           /sys/bus/dsa/devices/dsa<m>/max_batch_size
     21Date:           Oct 25, 2019
     22KernelVersion:  5.6.0
     23Contact:        dmaengine@vger.kernel.org
     24Description:    The largest number of work descriptors in a batch.
     25
     26What:           /sys/bus/dsa/devices/dsa<m>/max_work_queues_size
     27Date:           Oct 25, 2019
     28KernelVersion:  5.6.0
     29Contact:        dmaengine@vger.kernel.org
     30Description:    The maximum work queue size supported by this device.
     31
     32What:           /sys/bus/dsa/devices/dsa<m>/max_engines
     33Date:           Oct 25, 2019
     34KernelVersion:  5.6.0
     35Contact:        dmaengine@vger.kernel.org
     36Description:    The maximum number of engines supported by this device.
     37
     38What:           /sys/bus/dsa/devices/dsa<m>/max_groups
     39Date:           Oct 25, 2019
     40KernelVersion:  5.6.0
     41Contact:        dmaengine@vger.kernel.org
     42Description:    The maximum number of groups can be created under this device.
     43
     44What:           /sys/bus/dsa/devices/dsa<m>/max_read_buffers
     45Date:           Dec 10, 2021
     46KernelVersion:  5.17.0
     47Contact:        dmaengine@vger.kernel.org
     48Description:    The total number of read buffers supported by this device.
     49		The read buffers represent resources within the DSA
     50		implementation, and these resources are allocated by engines to
     51		support operations. See DSA spec v1.2 9.2.4 Total Read Buffers.
     52
     53What:           /sys/bus/dsa/devices/dsa<m>/max_transfer_size
     54Date:           Oct 25, 2019
     55KernelVersion:  5.6.0
     56Contact:        dmaengine@vger.kernel.org
     57Description:    The number of bytes to be read from the source address to
     58		perform the operation. The maximum transfer size is dependent on
     59		the workqueue the descriptor was submitted to.
     60
     61What:           /sys/bus/dsa/devices/dsa<m>/max_work_queues
     62Date:           Oct 25, 2019
     63KernelVersion:  5.6.0
     64Contact:        dmaengine@vger.kernel.org
     65Description:    The maximum work queue number that this device supports.
     66
     67What:           /sys/bus/dsa/devices/dsa<m>/numa_node
     68Date:           Oct 25, 2019
     69KernelVersion:  5.6.0
     70Contact:        dmaengine@vger.kernel.org
     71Description:    The numa node number for this device.
     72
     73What:           /sys/bus/dsa/devices/dsa<m>/op_cap
     74Date:           Oct 25, 2019
     75KernelVersion:  5.6.0
     76Contact:        dmaengine@vger.kernel.org
     77Description:    The operation capability bit mask specify the operation types
     78		supported by the this device.
     79
     80What:		/sys/bus/dsa/devices/dsa<m>/pasid_enabled
     81Date:		Oct 27, 2020
     82KernelVersion:	5.11.0
     83Contact:	dmaengine@vger.kernel.org
     84Description:	To indicate if PASID (process address space identifier) is
     85		enabled or not for this device.
     86
     87What:           /sys/bus/dsa/devices/dsa<m>/state
     88Date:           Oct 25, 2019
     89KernelVersion:  5.6.0
     90Contact:        dmaengine@vger.kernel.org
     91Description:    The state information of this device. It can be either enabled
     92		or disabled.
     93
     94What:           /sys/bus/dsa/devices/dsa<m>/group<m>.<n>
     95Date:           Oct 25, 2019
     96KernelVersion:  5.6.0
     97Contact:        dmaengine@vger.kernel.org
     98Description:    The assigned group under this device.
     99
    100What:           /sys/bus/dsa/devices/dsa<m>/engine<m>.<n>
    101Date:           Oct 25, 2019
    102KernelVersion:  5.6.0
    103Contact:        dmaengine@vger.kernel.org
    104Description:    The assigned engine under this device.
    105
    106What:           /sys/bus/dsa/devices/dsa<m>/wq<m>.<n>
    107Date:           Oct 25, 2019
    108KernelVersion:  5.6.0
    109Contact:        dmaengine@vger.kernel.org
    110Description:    The assigned work queue under this device.
    111
    112What:           /sys/bus/dsa/devices/dsa<m>/configurable
    113Date:           Oct 25, 2019
    114KernelVersion:  5.6.0
    115Contact:        dmaengine@vger.kernel.org
    116Description:    To indicate if this device is configurable or not.
    117
    118What:           /sys/bus/dsa/devices/dsa<m>/read_buffer_limit
    119Date:           Dec 10, 2021
    120KernelVersion:  5.17.0
    121Contact:        dmaengine@vger.kernel.org
    122Description:    The maximum number of read buffers that may be in use at
    123		one time by operations that access low bandwidth memory in the
    124		device. See DSA spec v1.2 9.2.8 GENCFG on Global Read Buffer Limit.
    125
    126What:		/sys/bus/dsa/devices/dsa<m>/cmd_status
    127Date:		Aug 28, 2020
    128KernelVersion:	5.10.0
    129Contact:	dmaengine@vger.kernel.org
    130Description:	The last executed device administrative command's status/error.
    131		Also last configuration error overloaded.
    132		Writing to it will clear the status.
    133
    134What:		/sys/bus/dsa/devices/wq<m>.<n>/block_on_fault
    135Date:		Oct 27, 2020
    136KernelVersion:	5.11.0
    137Contact:	dmaengine@vger.kernel.org
    138Description:	To indicate block on fault is allowed or not for the work queue
    139		to support on demand paging.
    140
    141What:           /sys/bus/dsa/devices/wq<m>.<n>/group_id
    142Date:           Oct 25, 2019
    143KernelVersion:  5.6.0
    144Contact:        dmaengine@vger.kernel.org
    145Description:    The group id that this work queue belongs to.
    146
    147What:           /sys/bus/dsa/devices/wq<m>.<n>/size
    148Date:           Oct 25, 2019
    149KernelVersion:  5.6.0
    150Contact:        dmaengine@vger.kernel.org
    151Description:    The work queue size for this work queue.
    152
    153What:           /sys/bus/dsa/devices/wq<m>.<n>/type
    154Date:           Oct 25, 2019
    155KernelVersion:  5.6.0
    156Contact:        dmaengine@vger.kernel.org
    157Description:    The type of this work queue, it can be "kernel" type for work
    158		queue usages in the kernel space or "user" type for work queue
    159		usages by applications in user space.
    160
    161What:           /sys/bus/dsa/devices/wq<m>.<n>/cdev_minor
    162Date:           Oct 25, 2019
    163KernelVersion:  5.6.0
    164Contact:        dmaengine@vger.kernel.org
    165Description:    The minor number assigned to this work queue by the character
    166		device driver.
    167
    168What:           /sys/bus/dsa/devices/wq<m>.<n>/mode
    169Date:           Oct 25, 2019
    170KernelVersion:  5.6.0
    171Contact:        dmaengine@vger.kernel.org
    172Description:    The work queue mode type for this work queue.
    173
    174What:           /sys/bus/dsa/devices/wq<m>.<n>/priority
    175Date:           Oct 25, 2019
    176KernelVersion:  5.6.0
    177Contact:        dmaengine@vger.kernel.org
    178Description:    The priority value of this work queue, it is a value relative to
    179		other work queue in the same group to control quality of service
    180		for dispatching work from multiple workqueues in the same group.
    181
    182What:           /sys/bus/dsa/devices/wq<m>.<n>/state
    183Date:           Oct 25, 2019
    184KernelVersion:  5.6.0
    185Contact:        dmaengine@vger.kernel.org
    186Description:    The current state of the work queue.
    187
    188What:           /sys/bus/dsa/devices/wq<m>.<n>/threshold
    189Date:           Oct 25, 2019
    190KernelVersion:  5.6.0
    191Contact:        dmaengine@vger.kernel.org
    192Description:    The number of entries in this work queue that may be filled
    193		via a limited portal.
    194
    195What:		/sys/bus/dsa/devices/wq<m>.<n>/max_transfer_size
    196Date:		Aug 28, 2020
    197KernelVersion:	5.10.0
    198Contact:	dmaengine@vger.kernel.org
    199Description:	The max transfer sized for this workqueue. Cannot exceed device
    200		max transfer size. Configurable parameter.
    201
    202What:		/sys/bus/dsa/devices/wq<m>.<n>/max_batch_size
    203Date:		Aug 28, 2020
    204KernelVersion:	5.10.0
    205Contact:	dmaengine@vger.kernel.org
    206Description:	The max batch size for this workqueue. Cannot exceed device
    207		max batch size. Configurable parameter.
    208
    209What:		/sys/bus/dsa/devices/wq<m>.<n>/ats_disable
    210Date:		Nov 13, 2020
    211KernelVersion:	5.11.0
    212Contact:	dmaengine@vger.kernel.org
    213Description:	Indicate whether ATS disable is turned on for the workqueue.
    214		0 indicates ATS is on, and 1 indicates ATS is off for the workqueue.
    215
    216What:		/sys/bus/dsa/devices/wq<m>.<n>/occupancy
    217Date		May 25, 2021
    218KernelVersion:	5.14.0
    219Contact:	dmaengine@vger.kernel.org
    220Description:	Show the current number of entries in this WQ if WQ Occupancy
    221		Support bit WQ capabilities is 1.
    222
    223What:		/sys/bus/dsa/devices/wq<m>.<n>/enqcmds_retries
    224Date		Oct 29, 2021
    225KernelVersion:	5.17.0
    226Contact:	dmaengine@vger.kernel.org
    227Description:	Indicate the number of retires for an enqcmds submission on a sharedwq.
    228		A max value to set attribute is capped at 64.
    229
    230What:           /sys/bus/dsa/devices/engine<m>.<n>/group_id
    231Date:           Oct 25, 2019
    232KernelVersion:  5.6.0
    233Contact:        dmaengine@vger.kernel.org
    234Description:    The group that this engine belongs to.
    235
    236What:		/sys/bus/dsa/devices/group<m>.<n>/use_read_buffer_limit
    237Date:		Dec 10, 2021
    238KernelVersion:	5.17.0
    239Contact:	dmaengine@vger.kernel.org
    240Description:	Enable the use of global read buffer limit for the group. See DSA
    241		spec v1.2 9.2.18 GRPCFG Use Global Read Buffer Limit.
    242
    243What:		/sys/bus/dsa/devices/group<m>.<n>/read_buffers_allowed
    244Date:		Dec 10, 2021
    245KernelVersion:	5.17.0
    246Contact:	dmaengine@vger.kernel.org
    247Description:	Indicates max number of read buffers that may be in use at one time
    248		by all engines in the group. See DSA spec v1.2 9.2.18 GRPCFG Read
    249		Buffers Allowed.
    250
    251What:		/sys/bus/dsa/devices/group<m>.<n>/read_buffers_reserved
    252Date:		Dec 10, 2021
    253KernelVersion:	5.17.0
    254Contact:	dmaengine@vger.kernel.org
    255Description:	Indicates the number of Read Buffers reserved for the use of
    256		engines in the group. See DSA spec v1.2 9.2.18 GRPCFG Read Buffers
    257		Reserved.