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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leds-mlxcpld.rst (2424B)

      1=======================================
      2Kernel driver for Mellanox systems LEDs
      3=======================================
      4
      5Provide system LED support for the nex Mellanox systems:
      6"msx6710", "msx6720", "msb7700", "msn2700", "msx1410",
      7"msn2410", "msb7800", "msn2740", "msn2100".
      8
      9Description
     10-----------
     11Driver provides the following LEDs for the systems "msx6710", "msx6720",
     12"msb7700", "msn2700", "msx1410", "msn2410", "msb7800", "msn2740":
     13
     14  - mlxcpld:fan1:green
     15  - mlxcpld:fan1:red
     16  - mlxcpld:fan2:green
     17  - mlxcpld:fan2:red
     18  - mlxcpld:fan3:green
     19  - mlxcpld:fan3:red
     20  - mlxcpld:fan4:green
     21  - mlxcpld:fan4:red
     22  - mlxcpld:psu:green
     23  - mlxcpld:psu:red
     24  - mlxcpld:status:green
     25  - mlxcpld:status:red
     26
     27 "status"
     28  - CPLD reg offset: 0x20
     29  - Bits [3:0]
     30
     31 "psu"
     32  - CPLD reg offset: 0x20
     33  - Bits [7:4]
     34
     35 "fan1"
     36  - CPLD reg offset: 0x21
     37  - Bits [3:0]
     38
     39 "fan2"
     40  - CPLD reg offset: 0x21
     41  - Bits [7:4]
     42
     43 "fan3"
     44  - CPLD reg offset: 0x22
     45  - Bits [3:0]
     46
     47 "fan4"
     48  - CPLD reg offset: 0x22
     49  - Bits [7:4]
     50
     51 Color mask for all the above LEDs:
     52
     53  [bit3,bit2,bit1,bit0] or
     54  [bit7,bit6,bit5,bit4]:
     55
     56	- [0,0,0,0] = LED OFF
     57	- [0,1,0,1] = Red static ON
     58	- [1,1,0,1] = Green static ON
     59	- [0,1,1,0] = Red blink 3Hz
     60	- [1,1,1,0] = Green blink 3Hz
     61	- [0,1,1,1] = Red blink 6Hz
     62	- [1,1,1,1] = Green blink 6Hz
     63
     64Driver provides the following LEDs for the system "msn2100":
     65
     66  - mlxcpld:fan:green
     67  - mlxcpld:fan:red
     68  - mlxcpld:psu1:green
     69  - mlxcpld:psu1:red
     70  - mlxcpld:psu2:green
     71  - mlxcpld:psu2:red
     72  - mlxcpld:status:green
     73  - mlxcpld:status:red
     74  - mlxcpld:uid:blue
     75
     76 "status"
     77  - CPLD reg offset: 0x20
     78  - Bits [3:0]
     79
     80 "fan"
     81  - CPLD reg offset: 0x21
     82  - Bits [3:0]
     83
     84 "psu1"
     85  - CPLD reg offset: 0x23
     86  - Bits [3:0]
     87
     88 "psu2"
     89  - CPLD reg offset: 0x23
     90  - Bits [7:4]
     91
     92 "uid"
     93  - CPLD reg offset: 0x24
     94  - Bits [3:0]
     95
     96 Color mask for all the above LEDs, excepted uid:
     97
     98  [bit3,bit2,bit1,bit0] or
     99  [bit7,bit6,bit5,bit4]:
    100
    101	- [0,0,0,0] = LED OFF
    102	- [0,1,0,1] = Red static ON
    103	- [1,1,0,1] = Green static ON
    104	- [0,1,1,0] = Red blink 3Hz
    105	- [1,1,1,0] = Green blink 3Hz
    106	- [0,1,1,1] = Red blink 6Hz
    107	- [1,1,1,1] = Green blink 6Hz
    108
    109 Color mask for uid LED:
    110  [bit3,bit2,bit1,bit0]:
    111
    112	- [0,0,0,0] = LED OFF
    113	- [1,1,0,1] = Blue static ON
    114	- [1,1,1,0] = Blue blink 3Hz
    115	- [1,1,1,1] = Blue blink 6Hz
    116
    117Driver supports HW blinking at 3Hz and 6Hz frequency (50% duty cycle).
    118For 3Hz duty cylce is about 167 msec, for 6Hz is about 83 msec.