Documentation: rapidio: move sysfs interface to ABI

Right now, the description of the rapidio sysfs interfaces is in
Documentation/rapidio/sysfs.txt. Since these are a part of the ABI, they
should be in Documentation/ABI along with the rest.

Signed-off-by: Aishwarya Pant <aishpant@gmail.com>
Acked-by: Alexandre Bounine <alexandre.bounine@idt.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

1 files changed, 3 insertions, 158 deletions

diff --git a/Documentation/rapidio/sysfs.txt b/Documentation/rapidio/sysfs.txt
index 47ce9a5336e1..a1adac888e6e 100644
--- a/Documentation/rapidio/sysfs.txt
+++ b/Documentation/rapidio/sysfs.txt
@@ -1,158 +1,3 @@
-                         RapidIO sysfs Files
-
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-1. RapidIO Device Subdirectories
---------------------------------
-
-For each RapidIO device, the RapidIO subsystem creates files in an individual
-subdirectory with the following name, /sys/bus/rapidio/devices/<device_name>.
-
-The format of device_name is "nn:d:iiii", where:
-
-nn - two-digit hexadecimal ID of RapidIO network where the device resides
-d  - device typr: 'e' - for endpoint or 's' - for switch
-iiii - four-digit device destID for endpoints, or switchID for switches
-
-For example, below is a list of device directories that represents a typical
-RapidIO network with one switch, one host, and two agent endpoints, as it is
-seen by the enumerating host (destID = 1):
-
-/sys/bus/rapidio/devices/00:e:0000
-/sys/bus/rapidio/devices/00:e:0002
-/sys/bus/rapidio/devices/00:s:0001
-
-NOTE: An enumerating or discovering endpoint does not create a sysfs entry for
-itself, this is why an endpoint with destID=1 is not shown in the list.
-
-2. Attributes Common for All RapidIO Devices
---------------------------------------------
-
-Each device subdirectory contains the following informational read-only files:
-
-       did - returns the device identifier
-       vid - returns the device vendor identifier
-device_rev - returns the device revision level
-   asm_did - returns identifier for the assembly containing the device
-   asm_rev - returns revision level of the assembly containing the device
-   asm_vid - returns vendor identifier of the assembly containing the device
-   destid  - returns device destination ID assigned by the enumeration routine
-             (see 4.1 for switch specific details)
-   lprev   - returns name of previous device (switch) on the path to the device
-             that that owns this attribute
-  modalias - returns the device modalias
-
-In addition to the files listed above, each device has a binary attribute file
-that allows read/write access to the device configuration registers using
-the RapidIO maintenance transactions:
-
- config - reads from and writes to the device configuration registers.
-
-This attribute is similar in behavior to the "config" attribute of PCI devices
-and provides an access to the RapidIO device registers using standard file read
-and write operations.
-
-3. RapidIO Endpoint Device Attributes
--------------------------------------
-
-Currently Linux RapidIO subsystem does not create any endpoint specific sysfs
-attributes. It is possible that RapidIO master port drivers and endpoint device
-drivers will add their device-specific sysfs attributes but such attributes are
-outside the scope of this document.
-
-4. RapidIO Switch Device Attributes
------------------------------------
-
-RapidIO switches have additional attributes in sysfs. RapidIO subsystem supports
-common and device-specific sysfs attributes for switches. Because switches are
-integrated into the RapidIO subsystem, it offers a method to create
-device-specific sysfs attributes by specifying a callback function that may be
-set by the switch initialization routine during enumeration or discovery process.
-
-4.1 Common Switch Attributes
-
-   routes - reports switch routing information in "destID port" format. This
-            attribute reports only valid routing table entries, one line for
-            each entry.
-   destid - device destination ID that defines a route to the switch
- hopcount - number of hops on the path to the switch
-    lnext - returns names of devices linked to the switch except one of a device
-            linked to the ingress port (reported as "lprev"). This is an array
-            names with number of lines equal to number of ports in switch. If
-            a switch port has no attached device, returns "null" instead of
-            a device name.
-
-4.2 Device-specific Switch Attributes
-
-Device-specific switch attributes are listed for each RapidIO switch driver
-that exports additional attributes.
-
-IDT_GEN2:
- errlog - reads contents of device error log until it is empty.
-
-
-5. RapidIO Bus Attributes
--------------------------
-
-RapidIO bus subdirectory /sys/bus/rapidio implements the following bus-specific
-attribute:
-
-  scan - allows to trigger enumeration discovery process from user space. This
-	 is a write-only attribute. To initiate an enumeration or discovery
-	 process on specific mport device, a user needs to write mport_ID (not
-	 RapidIO destination ID) into this file. The mport_ID is a sequential
-	 number (0 ... RIO_MAX_MPORTS) assigned to the mport device.
-	 For example, for a machine with a single RapidIO controller, mport_ID
-	 for that controller always will be 0.
-	 To initiate RapidIO enumeration/discovery on all available mports
-	 a user must write '-1' (or RIO_MPORT_ANY) into this attribute file.
-
-
-6. RapidIO Bus Controllers/Ports
---------------------------------
-
-On-chip RapidIO controllers and PCIe-to-RapidIO bridges (referenced as
-"Master Port" or "mport") are presented in sysfs as the special class of
-devices: "rapidio_port".
-
-The /sys/class/rapidio_port subdirectory contains individual subdirectories
-named as "rapidioN" where N = mport ID registered with RapidIO subsystem.
-
-NOTE: An mport ID is not a RapidIO destination ID assigned to a given local
-mport device.
-
-Each mport device subdirectory in addition to standard entries contains the
-following device-specific attributes:
-
-   port_destid - reports RapidIO destination ID assigned to the given RapidIO
-                 mport device. If value 0xFFFFFFFF is returned this means that
-                 no valid destination ID have been assigned to the mport (yet).
-                 Normally, before enumeration/discovery have been executed only
-                 fabric enumerating mports have a valid destination ID assigned
-                 to them using "hdid=..." rapidio module parameter.
-      sys_size - reports RapidIO common transport system size:
-                   0 = small (8-bit destination ID, max. 256 devices),
-                   1 = large (16-bit destination ID, max. 65536 devices).
-
-After enumeration or discovery was performed for a given mport device,
-the corresponding subdirectory will also contain subdirectories for each
-child RapidIO device connected to the mport. Naming conventions for RapidIO
-devices are described in Section 1 above.
-
-The example below shows mport device subdirectory with several child RapidIO
-devices attached to it.
-
-[rio@rapidio ~]$ ls /sys/class/rapidio_port/rapidio0/ -l
-total 0
-drwxr-xr-x 3 root root    0 Feb 11 15:10 00:e:0001
-drwxr-xr-x 3 root root    0 Feb 11 15:10 00:e:0004
-drwxr-xr-x 3 root root    0 Feb 11 15:10 00:e:0007
-drwxr-xr-x 3 root root    0 Feb 11 15:10 00:s:0002
-drwxr-xr-x 3 root root    0 Feb 11 15:10 00:s:0003
-drwxr-xr-x 3 root root    0 Feb 11 15:10 00:s:0005
-lrwxrwxrwx 1 root root    0 Feb 11 15:11 device -> ../../../0000:01:00.0
--r--r--r-- 1 root root 4096 Feb 11 15:11 port_destid
-drwxr-xr-x 2 root root    0 Feb 11 15:11 power
-lrwxrwxrwx 1 root root    0 Feb 11 15:04 subsystem -> ../../../../../../class/rapidio_port
--r--r--r-- 1 root root 4096 Feb 11 15:11 sys_size
--rw-r--r-- 1 root root 4096 Feb 11 15:04 uevent
+The RapidIO sysfs files have moved to:
+Documentation/ABI/testing/sysfs-bus-rapidio and
+Documentation/ABI/testing/sysfs-class-rapidio