1 What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/wrap
4 Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com>
5 Description: (RW) Configure MSC buffer wrapping. 1 == wrapping enabled.
7 What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/mode
10 Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com>
11 Description: (RW) Configure MSC operating mode:
12 - "single", for contiguous buffer mode (high-order alloc);
13 - "multi", for multiblock mode;
14 - "ExI", for DCI handler mode;
15 - "debug", for debug mode.
16 If operating mode changes, existing buffer is deallocated,
17 provided there are no active users and tracing is not enabled,
18 otherwise the write will fail.
20 What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/nr_pages
23 Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com>
24 Description: (RW) Configure MSC buffer size for "single" or "multi" modes.
25 In single mode, this is a single number of pages, has to be
26 power of 2. In multiblock mode, this is a comma-separated list
27 of numbers of pages for each window to be allocated. Number of
28 windows is not limited.
29 Writing to this file deallocates existing buffer (provided
30 there are no active users and tracing is not enabled) and then
33 What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/win_switch
36 Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com>
37 Description: (RW) Trigger window switch for the MSC's buffer, in
38 multi-window mode. In "multi" mode, accepts writes of "1", thereby
39 triggering a window switch for the buffer. Returns an error in any
40 other operating mode or attempts to write something other than "1".