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Merge tag 'char-misc-4.4-rc1' of git://git.kernel.org/pub/scm/linux/k…
…ernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the big char/misc driver update for 4.4-rc1. Lots of different driver and subsystem updates, hwtracing being the largest with the addition of some new platforms that are now supported. Full details in the shortlog. All of these have been in linux-next for a long time with no reported issues" * tag 'char-misc-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (181 commits) fpga: socfpga: Fix check of return value of devm_request_irq lkdtm: fix ACCESS_USERSPACE test mcb: Destroy IDA on module unload mcb: Do not return zero on error path in mcb_pci_probe() mei: bus: set the device name before running fixup mei: bus: use correct lock ordering mei: Fix debugfs filename in error output char: ipmi: ipmi_ssif: Replace timeval with timespec64 fpga: zynq-fpga: Fix issue with drvdata being overwritten. fpga manager: remove unnecessary null pointer checks fpga manager: ensure lifetime with of_fpga_mgr_get fpga: zynq-fpga: Change fw format to handle bin instead of bit. fpga: zynq-fpga: Fix unbalanced clock handling misc: sram: partition base address belongs to __iomem space coresight: etm3x: adding documentation for sysFS's cpu interface vme: 8-bit status/id takes 256 values, not 255 fpga manager: Adding FPGA Manager support for Xilinx Zynq 7000 ARM: zynq: dt: Updated devicetree for Zynq 7000 platform. ARM: dt: fpga: Added binding docs for Xilinx Zynq FPGA manager. ver_linux: proc/modules, limit text processing to 'sed' ...
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| What: /config/stp-policy | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Description: | ||
| This group contains policies mandating Master/Channel allocation | ||
| for software sources wishing to send trace data over an STM | ||
| device. | ||
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|
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| What: /config/stp-policy/<device>.<policy> | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Description: | ||
| This group is the root of a policy; its name is a concatenation | ||
| of an stm device name to which this policy applies and an | ||
| arbitrary string. If <device> part doesn't match an existing | ||
| stm device, mkdir will fail with ENODEV; if that device already | ||
| has a policy assigned to it, mkdir will fail with EBUSY. | ||
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| What: /config/stp-policy/<device>.<policy>/device | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Description: | ||
| STM device to which this policy applies, read only. Same as the | ||
| <device> component of its parent directory. | ||
|
|
||
| What: /config/stp-policy/<device>.<policy>/<node> | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Description: | ||
| Policy node is a string identifier that software clients will | ||
| use to request a master/channel to be allocated and assigned to | ||
| them. | ||
|
|
||
| What: /config/stp-policy/<device>.<policy>/<node>/masters | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Description: | ||
| Range of masters from which to allocate for users of this node. | ||
| Write two numbers: the first master and the last master number. | ||
|
|
||
| What: /config/stp-policy/<device>.<policy>/<node>/channels | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Description: | ||
| Range of channels from which to allocate for users of this node. | ||
| Write two numbers: the first channel and the last channel | ||
| number. | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| What: /sys/bus/intel_th/devices/<intel_th_id>-gth/masters/* | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> | ||
| Description: (RW) Configure output ports for STP masters. Writing -1 | ||
| disables a master; any | ||
|
|
||
| What: /sys/bus/intel_th/devices/<intel_th_id>-gth/outputs/[0-7]_port | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> | ||
| Description: (RO) Output port type: | ||
| 0: not present, | ||
| 1: MSU (Memory Storage Unit) | ||
| 2: CTP (Common Trace Port) | ||
| 4: PTI (MIPI PTI). | ||
|
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||
| What: /sys/bus/intel_th/devices/<intel_th_id>-gth/outputs/[0-7]_drop | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> | ||
| Description: (RW) Data retention policy setting: keep (0) or drop (1) | ||
| incoming data while output port is in reset. | ||
|
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||
| What: /sys/bus/intel_th/devices/<intel_th_id>-gth/outputs/[0-7]_null | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> | ||
| Description: (RW) STP NULL packet generation: enabled (1) or disabled (0). | ||
|
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| What: /sys/bus/intel_th/devices/<intel_th_id>-gth/outputs/[0-7]_flush | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> | ||
| Description: (RW) Force flush data from byte packing buffer for the output | ||
| port. | ||
|
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||
| What: /sys/bus/intel_th/devices/<intel_th_id>-gth/outputs/[0-7]_reset | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> | ||
| Description: (RO) Output port is in reset (1). | ||
|
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| What: /sys/bus/intel_th/devices/<intel_th_id>-gth/outputs/[0-7]_smcfreq | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> | ||
| Description: (RW) STP sync packet frequency for the port. Specifies the | ||
| number of clocks between mainenance packets. |
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| @@ -0,0 +1,33 @@ | ||
| What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/wrap | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> | ||
| Description: (RW) Configure MSC buffer wrapping. 1 == wrapping enabled. | ||
|
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| What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/mode | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> | ||
| Description: (RW) Configure MSC operating mode: | ||
| - "single", for contiguous buffer mode (high-order alloc); | ||
| - "multi", for multiblock mode; | ||
| - "ExI", for DCI handler mode; | ||
| - "debug", for debug mode. | ||
| If operating mode changes, existing buffer is deallocated, | ||
| provided there are no active users and tracing is not enabled, | ||
| otherwise the write will fail. | ||
|
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| What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/nr_pages | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> | ||
| Description: (RW) Configure MSC buffer size for "single" or "multi" modes. | ||
| In single mode, this is a single number of pages, has to be | ||
| power of 2. In multiblock mode, this is a comma-separated list | ||
| of numbers of pages for each window to be allocated. Number of | ||
| windows is not limited. | ||
| Writing to this file deallocates existing buffer (provided | ||
| there are no active users and tracing is not enabled) and then | ||
| allocates a new one. | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| What: /sys/bus/intel_th/devices/<intel_th_id>-pti/mode | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> | ||
| Description: (RW) Configure PTI output width. Currently supported values | ||
| are 4, 8, 12, 16. | ||
|
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||
| What: /sys/bus/intel_th/devices/<intel_th_id>-pti/freerunning_clock | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> | ||
| Description: (RW) 0: PTI trace clock acts as a strobe which only toggles | ||
| when there is trace data to send. 1: PTI trace clock is a | ||
| free-running clock. | ||
|
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||
| What: /sys/bus/intel_th/devices/<intel_th_id>-pti/clock_divider | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> | ||
| Description: (RW) Configure PTI port clock divider: | ||
| - 0: Intel TH clock rate, | ||
| - 1: 1/2 Intel TH clock rate, | ||
| - 2: 1/4 Intel TH clock rate, | ||
| - 3: 1/8 Intel TH clock rate. |
13 changes: 13 additions & 0 deletions
13
Documentation/ABI/testing/sysfs-bus-intel_th-output-devices
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| What: /sys/bus/intel_th/devices/<intel_th_id>-<device><id>/active | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> | ||
| Description: (RW) Writes of 1 or 0 enable or disable trace output to this | ||
| output device. Reads return current status. | ||
|
|
||
| What: /sys/bus/intel_th/devices/<intel_th_id>-msc<msc-id>/port | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> | ||
| Description: (RO) Port number, corresponding to this output device on the | ||
| switch (GTH). |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,37 @@ | ||
| What: /sys/class/fpga_manager/<fpga>/name | ||
| Date: August 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alan Tull <atull@opensource.altera.com> | ||
| Description: Name of low level fpga manager driver. | ||
|
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||
| What: /sys/class/fpga_manager/<fpga>/state | ||
| Date: August 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alan Tull <atull@opensource.altera.com> | ||
| Description: Read fpga manager state as a string. | ||
| The intent is to provide enough detail that if something goes | ||
| wrong during FPGA programming (something that the driver can't | ||
| fix) then userspace can know, i.e. if the firmware request | ||
| fails, that could be due to not being able to find the firmware | ||
| file. | ||
|
|
||
| This is a superset of FPGA states and fpga manager driver | ||
| states. The fpga manager driver is walking through these steps | ||
| to get the FPGA into a known operating state. It's a sequence, | ||
| though some steps may get skipped. Valid FPGA states will vary | ||
| by manufacturer; this is a superset. | ||
|
|
||
| * unknown = can't determine state | ||
| * power off = FPGA power is off | ||
| * power up = FPGA reports power is up | ||
| * reset = FPGA held in reset state | ||
| * firmware request = firmware class request in progress | ||
| * firmware request error = firmware request failed | ||
| * write init = preparing FPGA for programming | ||
| * write init error = Error while preparing FPGA for | ||
| programming | ||
| * write = FPGA ready to receive image data | ||
| * write error = Error while programming | ||
| * write complete = Doing post programming steps | ||
| * write complete error = Error while doing post programming | ||
| * operating = FPGA is programmed and operating |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| What: /sys/class/stm/<stm>/masters | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> | ||
| Description: | ||
| Shows first and last available to software master numbers on | ||
| this STM device. | ||
|
|
||
| What: /sys/class/stm/<stm>/channels | ||
| Date: June 2015 | ||
| KernelVersion: 4.3 | ||
| Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com> | ||
| Description: | ||
| Shows the number of channels per master on this STM device. |
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