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Commit | Line | Data |
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b9500546 PA |
1 | What: /config/pcie-gadget |
2 | Date: Feb 2011 | |
3 | KernelVersion: 2.6.37 | |
e34cadde | 4 | Contact: Pratyush Anand <pratyush.anand@gmail.com> |
b9500546 PA |
5 | Description: |
6 | ||
7 | Interface is used to configure selected dual mode PCIe controller | |
8 | as device and then program its various registers to configure it | |
9 | as a particular device type. | |
10 | This interfaces can be used to show spear's PCIe device capability. | |
11 | ||
12 | Nodes are only visible when configfs is mounted. To mount configfs | |
13 | in /config directory use: | |
14 | # mount -t configfs none /config/ | |
15 | ||
16 | For nth PCIe Device Controller | |
17 | /config/pcie-gadget.n/ | |
18 | link ... used to enable ltssm and read its status. | |
19 | int_type ...used to configure and read type of supported | |
20 | interrupt | |
21 | no_of_msi ... used to configure number of MSI vector needed and | |
22 | to read no of MSI granted. | |
23 | inta ... write 1 to assert INTA and 0 to de-assert. | |
24 | send_msi ... write MSI vector to be sent. | |
25 | vendor_id ... used to write and read vendor id (hex) | |
26 | device_id ... used to write and read device id (hex) | |
27 | bar0_size ... used to write and read bar0_size | |
28 | bar0_address ... used to write and read bar0 mapped area in hex. | |
29 | bar0_rw_offset ... used to write and read offset of bar0 where | |
30 | bar0_data will be written or read. | |
31 | bar0_data ... used to write and read data at bar0_rw_offset. |