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-bus-iio-timer-stm32 (4895B)

      1What:		/sys/bus/iio/devices/triggerX/master_mode_available
      2KernelVersion:	4.11
      3Contact:	benjamin.gaignard@st.com
      4Description:
      5		Reading returns the list possible master modes which are:
      6
      7
      8		- "reset"
      9				The UG bit from the TIMx_EGR register is
     10				used as trigger output (TRGO).
     11		- "enable"
     12				The Counter Enable signal CNT_EN is used
     13				as trigger output.
     14		- "update"
     15				The update event is selected as trigger output.
     16				For instance a master timer can then be used
     17				as a prescaler for a slave timer.
     18		- "compare_pulse"
     19				The trigger output send a positive pulse
     20				when the CC1IF flag is to be set.
     21		- "OC1REF"
     22				OC1REF signal is used as trigger output.
     23		- "OC2REF"
     24				OC2REF signal is used as trigger output.
     25		- "OC3REF"
     26				OC3REF signal is used as trigger output.
     27		- "OC4REF"
     28				OC4REF signal is used as trigger output.
     29
     30		Additional modes (on TRGO2 only):
     31
     32		- "OC5REF"
     33				OC5REF signal is used as trigger output.
     34		- "OC6REF"
     35				OC6REF signal is used as trigger output.
     36		- "compare_pulse_OC4REF":
     37				OC4REF rising or falling edges generate pulses.
     38		- "compare_pulse_OC6REF":
     39				OC6REF rising or falling edges generate pulses.
     40		- "compare_pulse_OC4REF_r_or_OC6REF_r":
     41				OC4REF or OC6REF rising edges generate pulses.
     42		- "compare_pulse_OC4REF_r_or_OC6REF_f":
     43				OC4REF rising or OC6REF falling edges generate
     44				pulses.
     45		- "compare_pulse_OC5REF_r_or_OC6REF_r":
     46				OC5REF or OC6REF rising edges generate pulses.
     47		- "compare_pulse_OC5REF_r_or_OC6REF_f":
     48				OC5REF rising or OC6REF falling edges generate
     49				pulses.
     50
     51		::
     52
     53		  +-----------+   +-------------+            +---------+
     54		  | Prescaler +-> | Counter     |        +-> | Master  | TRGO(2)
     55		  +-----------+   +--+--------+-+        |-> | Control +-->
     56		                     |        |          ||  +---------+
     57		                  +--v--------+-+ OCxREF ||  +---------+
     58		                  | Chx compare +----------> | Output  | ChX
     59		                  +-----------+-+         |  | Control +-->
     60		                        .     |           |  +---------+
     61		                        .     |           |    .
     62		                  +-----------v-+ OC6REF  |    .
     63		                  | Ch6 compare +---------+>
     64		                  +-------------+
     65
     66		Example with: "compare_pulse_OC4REF_r_or_OC6REF_r"::
     67
     68		                  X
     69		                X   X
     70		              X .   . X
     71		            X   .   .   X
     72		          X     .   .     X
     73		  count X .     .   .     . X
     74		          .     .   .     .
     75		          .     .   .     .
     76		          +---------------+
     77		  OC4REF  |     .   .     |
     78		        +-+     .   .     +-+
     79		          .     +---+     .
     80		  OC6REF  .     |   |     .
     81		        +-------+   +-------+
     82		          +-+   +-+
     83		  TRGO2   | |   | |
     84		        +-+ +---+ +---------+
     85
     86What:		/sys/bus/iio/devices/triggerX/master_mode
     87KernelVersion:	4.11
     88Contact:	benjamin.gaignard@st.com
     89Description:
     90		Reading returns the current master modes.
     91		Writing set the master mode
     92
     93What:		/sys/bus/iio/devices/triggerX/sampling_frequency
     94KernelVersion:	4.11
     95Contact:	benjamin.gaignard@st.com
     96Description:
     97		Reading returns the current sampling frequency.
     98		Writing an value different of 0 set and start sampling.
     99		Writing 0 stop sampling.
    100
    101What:		/sys/bus/iio/devices/iio:deviceX/in_count0_preset
    102KernelVersion:	4.12
    103Contact:	benjamin.gaignard@st.com
    104Description:
    105		Reading returns the current preset value.
    106		Writing sets the preset value.
    107		When counting up the counter starts from 0 and fires an
    108		event when reach preset value.
    109		When counting down the counter start from preset value
    110		and fire event when reach 0.
    111
    112What:		/sys/bus/iio/devices/iio:deviceX/in_count_enable_mode_available
    113KernelVersion:	4.12
    114Contact:	benjamin.gaignard@st.com
    115Description:
    116		Reading returns the list possible enable modes.
    117
    118What:		/sys/bus/iio/devices/iio:deviceX/in_count0_enable_mode
    119KernelVersion:	4.12
    120Contact:	benjamin.gaignard@st.com
    121Description:
    122		Configure the device counter enable modes, in all case
    123		counting direction is set by in_count0_count_direction
    124		attribute and the counter is clocked by the internal clock.
    125
    126		always:
    127			Counter is always ON.
    128
    129		gated:
    130			Counting is enabled when connected trigger signal
    131			level is high else counting is disabled.
    132
    133		triggered:
    134			Counting is enabled on rising edge of the connected
    135			trigger, and remains enabled for the duration of this
    136			selected mode.
    137
    138What:		/sys/bus/iio/devices/iio:deviceX/in_count_trigger_mode_available
    139KernelVersion:	4.13
    140Contact:	benjamin.gaignard@st.com
    141Description:
    142		Reading returns the list possible trigger modes.
    143
    144What:		/sys/bus/iio/devices/iio:deviceX/in_count0_trigger_mode
    145KernelVersion:	4.13
    146Contact:	benjamin.gaignard@st.com
    147Description:
    148		Configure the device counter trigger mode
    149		counting direction is set by in_count0_count_direction
    150		attribute and the counter is clocked by the connected trigger
    151		rising edges.