diff options
Diffstat (limited to 'Documentation/driver-api/ntb.rst')
| -rw-r--r-- | Documentation/driver-api/ntb.rst | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/Documentation/driver-api/ntb.rst b/Documentation/driver-api/ntb.rst index 87d1372da879..a49c41383779 100644 --- a/Documentation/driver-api/ntb.rst +++ b/Documentation/driver-api/ntb.rst @@ -9,7 +9,7 @@ registers and memory translation windows, as well as non common features like scratchpad and message registers. Scratchpad registers are read-and-writable registers that are accessible from either side of the device, so that peers can exchange a small amount of information at a fixed address. Message registers can -be utilized for the same purpose. Additionally they are provided with with +be utilized for the same purpose. Additionally they are provided with special status bits to make sure the information isn't rewritten by another peer. Doorbell registers provide a way for peers to send interrupt events. Memory windows allow translated read and write access to the peer memory. @@ -35,7 +35,7 @@ anyone who has written a pci driver. NTB Typical client driver implementation ---------------------------------------- -Primary purpose of NTB is to share some peace of memory between at least two +Primary purpose of NTB is to share some piece of memory between at least two systems. So the NTB device features like Scratchpad/Message registers are mainly used to perform the proper memory window initialization. Typically there are two types of memory window interfaces supported by the NTB API: @@ -207,9 +207,9 @@ The MSI test client serves to test and debug the MSI library which allows for passing MSI interrupts across NTB memory windows. The test client is interacted with through the debugfs filesystem: -* *debugfs*/ntb\_tool/*hw*/ +* *debugfs*/ntb\_msi\_test/*hw*/ A directory in debugfs will be created for each - NTB device probed by the tool. This directory is shortened to *hw* + NTB device probed by the msi test. This directory is shortened to *hw* below. * *hw*/port This file describes the local port number |