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diff --git a/man/intel_reg.rst b/man/intel_reg.rst new file mode 100644 index 00000000..c6e2fead --- /dev/null +++ b/man/intel_reg.rst @@ -0,0 +1,229 @@ +========= +intel_reg +========= + +--------------------------------- +Intel graphics register multitool +--------------------------------- + +:Author: Jani Nikula <jani.nikula@intel.com> +:Date: 2015-04-14 +:Version: intel-gpu-tools +:Copyright: 2015 Intel Corporation +:Manual section: 1 +:Manual group: General Commands Manual + +SYNOPSIS +======== + +**intel_reg** [*option* ...] *command* + +DESCRIPTION +=========== + +Intel graphics register multitool. Read, write, dump, and decode Intel graphics +MMIO and sideband registers, and more. + +OPTIONS +======= + +Some options are global, and some specific to commands. + +--verbose +--------- + +Increase verbosity. + +--quiet +------- + +Decrease verbosity. + +--count=N +--------- + +Read N registers. + +--binary +-------- + +Output binary values. + +--all +----- + +Decode registers for all known platforms. + +--mmio=FILE +----------- + +Use MMIO bar from FILE. + +--devid=DEVID +------------- + +Pretend to be PCI ID DEVID. Useful with MMIO bar snapshots from other machines. + +--spec=PATH +----------- + +Read register spec from directory or file specified by PATH; see REGISTER SPEC +DEFINITIONS below for details. + +--help +------ + +Show brief help. + +COMMANDS +======== + +See REGISTER REFERENCES below on how to describe registers for the commands. + +read [--count=N] REGISTER [...] +------------------------------- + +Dump each specified REGISTER, or N registers starting from each REGISTER. + +write REGISTER VALUE [REGISTER VALUE ...] +----------------------------------------- + +Write each VALUE to corresponding REGISTER. + +dump [--mmio=FILE --devid=DEVID] +-------------------------------- + +Dump all registers specified in the register spec. + +decode REGISTER VALUE +--------------------- + +Decode REGISTER VALUE. + +snapshot +-------- + +Output the MMIO bar to stdout. The output can be used for a later invocation of +dump or read with the --mmio=FILE and --devid=DEVID parameters. + +list +---- + +List the known registers. + +help +---- + +Display brief help. + + +REGISTER REFERENCES +=================== + +Registers are defined as [(PORTNAME|PORTNUM|MMIO-OFFSET):](REGNAME|REGADDR). + +PORTNAME +-------- + +The register access method, most often MMIO, which is the default. The methods +supported on all platforms are "mmio", "portio-vga", and "mmio-vga". + +On BYT and CHV, the sideband ports "bunit", "punit", "nc", "dpio", "gpio-nc", +"cck", "ccu", "dpio2", and "flisdsi" are also supported. + +PORTNUM +------- + +Port number for the sideband ports supported on BYT and CHV. Only numbers mapped +to the supported ports are allowed, arbitrary numbers are not accepted. + +Numbers above 0xff are automatically interpreted as MMIO offsets, not port +numbers. + +MMIO-OFFSET +----------- + +Use MMIO, and add this offset to the register address. + +Numbers equal to or below 0xff are automatically interpreted as port numbers, +not MMIO offsets. + +REGNAME +------- + +Name of the register as defined in the register spec. + +If MMIO offset is not specified, it is picked up from the register +spec. However, ports are not; the port is a namespace for the register names. + +REGADDR +------- + +Register address. The corresponding register name need not be specified in the +register spec. + +ENVIRONMENT +=========== + +INTEL_REG_SPEC +-------------- + +Path to a directory or a file containing register spec definitions. + +REGISTER SPEC DEFINITIONS +========================= + +A register spec associates register names with addresses. The spec is searched +for in this order: + +#. Directory or file specified by the --spec option. + +#. Directory or file specified by the INTEL_REG_SPEC environment variable. + +#. Builtin register spec. Also used as fallback with a warning if the above are + used but fail. + +If a directory is specified using --spec option or INTEL_REG_SPEC environment +variable, the directory is scanned for a spec file in this order: + +#. File named after the PCI device id. For example, "0412". + +#. File named after the code name in lowercase, without punctuation. For + example, "valleyview". + +#. File named after generation. For example, "gen7" (note that this matches + valleyview, ivybridge and haswell!). + +Register Spec File Format +------------------------- + +The register spec format is compatible with the quick_dump.py format, briefly +described below: + +* Empty lines and lines beginning with "#", ";", or "//" are ignored. + +* Lines *not* beginning with "(" are interpreted as file names, absolute or + relative, to be included. + +* Lines beginning with "(" are interpreted as register definitions. + +Registers are defined as tuples ('REGNAME', 'REGADDR', +'PORTNAME|PORTNUM|MMIO-OFFSET'), as in REGISTER REFERENCES above. The port +description may also be an empty string to denote MMIO. + +Examples: + +* # this is a comment, below is an include + +* vlv_pipe_a.txt + +* ('GEN6_PMINTRMSK', '0x0000a168', '') + +* ('MIPIA_PORT_CTRL', '0x61190', '0x180000') + +* ('PLL1_DW0', '0x8000', 'DPIO') + +BUGS +==== + +Reading some registers may hang the GPU or the machine. |