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Linux/Documentation/ABI/testing/sysfs-bus-cdx

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Diff markup

Differences between /Documentation/ABI/testing/sysfs-bus-cdx (Version linux-6.12-rc7) and /Documentation/ABI/testing/sysfs-bus-cdx (Version linux-6.5.13)


  1 What:           /sys/bus/cdx/rescan                 1 What:           /sys/bus/cdx/rescan
  2 Date:           March 2023                          2 Date:           March 2023
  3 Contact:        nipun.gupta@amd.com                 3 Contact:        nipun.gupta@amd.com
  4 Description:                                        4 Description:
  5                 Writing y/1/on to this file wi      5                 Writing y/1/on to this file will cause rescan of the bus
  6                 and devices on the CDX bus. An      6                 and devices on the CDX bus. Any new devices are scanned and
  7                 added to the list of Linux dev      7                 added to the list of Linux devices and any devices removed are
  8                 also deleted from Linux.            8                 also deleted from Linux.
  9                                                     9 
 10                 For example::                      10                 For example::
 11                                                    11 
 12                   # echo 1 > /sys/bus/cdx/resc     12                   # echo 1 > /sys/bus/cdx/rescan
 13                                                    13 
 14 What:           /sys/bus/cdx/devices/.../vendo     14 What:           /sys/bus/cdx/devices/.../vendor
 15 Date:           March 2023                         15 Date:           March 2023
 16 Contact:        nipun.gupta@amd.com                16 Contact:        nipun.gupta@amd.com
 17 Description:                                       17 Description:
 18                 Vendor ID for this CDX device,     18                 Vendor ID for this CDX device, in hexadecimal. Vendor ID is
 19                 16 bit identifier which is spe     19                 16 bit identifier which is specific to the device manufacturer.
 20                 Combination of Vendor ID and D     20                 Combination of Vendor ID and Device ID identifies a device.
 21                                                    21 
 22 What:           /sys/bus/cdx/devices/.../devic     22 What:           /sys/bus/cdx/devices/.../device
 23 Date:           March 2023                         23 Date:           March 2023
 24 Contact:        nipun.gupta@amd.com                24 Contact:        nipun.gupta@amd.com
 25 Description:                                       25 Description:
 26                 Device ID for this CDX device,     26                 Device ID for this CDX device, in hexadecimal. Device ID is
 27                 16 bit identifier to identify      27                 16 bit identifier to identify a device type within the range
 28                 of a device manufacturer.          28                 of a device manufacturer.
 29                 Combination of Vendor ID and D     29                 Combination of Vendor ID and Device ID identifies a device.
 30                                                    30 
 31 What:           /sys/bus/cdx/devices/.../subsy << 
 32 Date:           July 2023                      << 
 33 Contact:        puneet.gupta@amd.com           << 
 34 Description:                                   << 
 35                 Subsystem Vendor ID for this C << 
 36                 Subsystem Vendor ID is 16 bit  << 
 37                 card manufacturer.             << 
 38                                                << 
 39 What:           /sys/bus/cdx/devices/.../subsy << 
 40 Date:           July 2023                      << 
 41 Contact:        puneet.gupta@amd.com           << 
 42 Description:                                   << 
 43                 Subsystem Device ID for this C << 
 44                 Subsystem Device ID is 16 bit  << 
 45                 card manufacturer.             << 
 46                                                << 
 47 What:           /sys/bus/cdx/devices/.../class << 
 48 Date:           July 2023                      << 
 49 Contact:        puneet.gupta@amd.com           << 
 50 Description:                                   << 
 51                 This file contains the class o << 
 52                 Class is 24 bit identifier spe << 
 53                                                << 
 54 What:           /sys/bus/cdx/devices/.../revis << 
 55 Date:           July 2023                      << 
 56 Contact:        puneet.gupta@amd.com           << 
 57 Description:                                   << 
 58                 This file contains the revisio << 
 59                 Revision is 8 bit revision ide << 
 60                                                << 
 61 What:           /sys/bus/cdx/devices/.../enabl << 
 62 Date:           October 2023                   << 
 63 Contact:        abhijit.gangurde@amd.com       << 
 64 Description:                                   << 
 65                 CDX bus should be disabled bef << 
 66                 Writing n/0/off will attempt t << 
 67                 writing y/1/on will attempt to << 
 68                 gives the current state of the << 
 69                                                << 
 70                 For example::                  << 
 71                                                << 
 72                   # echo 1 > /sys/bus/cdx/.../ << 
 73                                                << 
 74 What:           /sys/bus/cdx/devices/.../reset     31 What:           /sys/bus/cdx/devices/.../reset
 75 Date:           March 2023                         32 Date:           March 2023
 76 Contact:        nipun.gupta@amd.com                33 Contact:        nipun.gupta@amd.com
 77 Description:                                       34 Description:
 78                 Writing y/1/on to this file re !!  35                 Writing y/1/on to this file resets the CDX device.
 79                 on the bus. On resetting the d !!  36                 On resetting the device, the corresponding driver is notified
 80                 notified twice, once before th !!  37                 twice, once before the device is being reset, and again after
 81                 after the reset has been compl !!  38                 the reset has been complete.
 82                                                    39 
 83                 For example::                      40                 For example::
 84                                                    41 
 85                   # echo 1 > /sys/bus/cdx/.../     42                   # echo 1 > /sys/bus/cdx/.../reset
 86                                                    43 
 87 What:           /sys/bus/cdx/devices/.../remov     44 What:           /sys/bus/cdx/devices/.../remove
 88 Date:           March 2023                         45 Date:           March 2023
 89 Contact:        tarak.reddy@amd.com                46 Contact:        tarak.reddy@amd.com
 90 Description:                                       47 Description:
 91                 Writing y/1/on to this file re     48                 Writing y/1/on to this file removes the corresponding
 92                 device from the CDX bus. If th     49                 device from the CDX bus. If the device is to be reconfigured
 93                 reconfigured in the Hardware,      50                 reconfigured in the Hardware, the device can be removed, so
 94                 that the device driver does no     51                 that the device driver does not access the device while it is
 95                 being reconfigured.                52                 being reconfigured.
 96                                                    53 
 97                 For example::                      54                 For example::
 98                                                    55 
 99                   # echo 1 > /sys/bus/cdx/devi     56                   # echo 1 > /sys/bus/cdx/devices/.../remove
100                                                << 
101 What:           /sys/bus/cdx/devices/.../resou << 
102 Date:           July 2023                      << 
103 Contact:        puneet.gupta@amd.com           << 
104 Description:                                   << 
105                 The resource binary file conta << 
106                 regions. These files can be m' << 
107                                                << 
108 What:           /sys/bus/cdx/devices/.../modal << 
109 Date:           July 2023                      << 
110 Contact:        nipun.gupta@amd.com            << 
111 Description:                                   << 
112                 This attribute indicates the C << 
113                 That is in the format:         << 
114                 cdx:vXXXXdXXXXsvXXXXsdXXXXcXXX << 
115                 where:                         << 
116                                                << 
117                     - vXXXX contains the vendo << 
118                     - dXXXX contains the devic << 
119                     - svXXXX contains the subs << 
120                     - sdXXXX contains the subs << 
121                     - cXXXXXX contains the dev << 
                                                      

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