| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | What: /sys/class/rapidio_port |
| 2 | Description: |
| 3 | On-chip RapidIO controllers and PCIe-to-RapidIO bridges |
| 4 | (referenced as "Master Port" or "mport") are presented in sysfs |
| 5 | as the special class of devices: "rapidio_port". |
| 6 | The /sys/class/rapidio_port subdirectory contains individual |
| 7 | subdirectories named as "rapidioN" where N = mport ID registered |
| 8 | with RapidIO subsystem. |
| 9 | NOTE: An mport ID is not a RapidIO destination ID assigned to a |
| 10 | given local mport device. |
| 11 | |
| 12 | What: /sys/class/rapidio_port/rapidioN/sys_size |
| 13 | Date: Apr, 2014 |
| 14 | KernelVersion: v3.15 |
| 15 | Contact: Matt Porter <mporter@kernel.crashing.org>, |
| 16 | Alexandre Bounine <alexandre.bounine@idt.com> |
| 17 | Description: |
| 18 | (RO) reports RapidIO common transport system size: |
| 19 | 0 = small (8-bit destination ID, max. 256 devices), |
| 20 | 1 = large (16-bit destination ID, max. 65536 devices). |
| 21 | |
| 22 | What: /sys/class/rapidio_port/rapidioN/port_destid |
| 23 | Date: Apr, 2014 |
| 24 | KernelVersion: v3.15 |
| 25 | Contact: Matt Porter <mporter@kernel.crashing.org>, |
| 26 | Alexandre Bounine <alexandre.bounine@idt.com> |
| 27 | Description: |
| 28 | (RO) reports RapidIO destination ID assigned to the given |
| 29 | RapidIO mport device. If value 0xFFFFFFFF is returned this means |
| 30 | that no valid destination ID have been assigned to the mport |
| 31 | (yet). Normally, before enumeration/discovery have been executed |
| 32 | only fabric enumerating mports have a valid destination ID |
| 33 | assigned to them using "hdid=..." rapidio module parameter. |
| 34 | |
| 35 | After enumeration or discovery was performed for a given mport device, |
| 36 | the corresponding subdirectory will also contain subdirectories for each |
| 37 | child RapidIO device connected to the mport. |
| 38 | |
| 39 | The example below shows mport device subdirectory with several child RapidIO |
| 40 | devices attached to it. |
| 41 | |
| 42 | [rio@rapidio ~]$ ls /sys/class/rapidio_port/rapidio0/ -l |
| 43 | total 0 |
| 44 | drwxr-xr-x 3 root root 0 Feb 11 15:10 00:e:0001 |
| 45 | drwxr-xr-x 3 root root 0 Feb 11 15:10 00:e:0004 |
| 46 | drwxr-xr-x 3 root root 0 Feb 11 15:10 00:e:0007 |
| 47 | drwxr-xr-x 3 root root 0 Feb 11 15:10 00:s:0002 |
| 48 | drwxr-xr-x 3 root root 0 Feb 11 15:10 00:s:0003 |
| 49 | drwxr-xr-x 3 root root 0 Feb 11 15:10 00:s:0005 |
| 50 | lrwxrwxrwx 1 root root 0 Feb 11 15:11 device -> ../../../0000:01:00.0 |
| 51 | -r--r--r-- 1 root root 4096 Feb 11 15:11 port_destid |
| 52 | drwxr-xr-x 2 root root 0 Feb 11 15:11 power |
| 53 | lrwxrwxrwx 1 root root 0 Feb 11 15:04 subsystem -> ../../../../../../class/rapidio_port |
| 54 | -r--r--r-- 1 root root 4096 Feb 11 15:11 sys_size |
| 55 | -rw-r--r-- 1 root root 4096 Feb 11 15:04 uevent |