diff options
Diffstat (limited to 'tools/tools/ioat/ioatcontrol.8')
| -rw-r--r-- | tools/tools/ioat/ioatcontrol.8 | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/tools/tools/ioat/ioatcontrol.8 b/tools/tools/ioat/ioatcontrol.8 index 7e3234825eda..2306d3876a36 100644 --- a/tools/tools/ioat/ioatcontrol.8 +++ b/tools/tools/ioat/ioatcontrol.8 @@ -24,7 +24,7 @@ .\" .\" $FreeBSD$ .\" -.Dd October 26, 2015 +.Dd October 28, 2015 .Dt IOATCONTROL 8 .Os .Sh NAME @@ -40,6 +40,14 @@ .Ar [ bufsize .Ar [ chain-len .Ar [ duration ] ] ] +.Nm +.Fl r +.Op Fl v +.Op Fl V +.Op Fl w +.Ar channel_number +.Ar address +.Ar [ bufsize ] .Sh DESCRIPTION .Nm allows one to issue some number of test operations to the @@ -55,6 +63,29 @@ tests copy) Verify copies/fills for accuracy .El .Pp +Alternatively one can use +.Nm +.Fl r +to issue DMA to or from a specific +.Ar address . +The arguments in "raw" mode are: +.Bl -tag -width Ds +.It Fl v +.Ar address +is a kernel virtual address (by default, +.Ar address +is assumed to be a physical address) +.It Fl V +Dump the resulting hex to syslog +.It Fl w +Write to the specified +.Ar address +(by default, +.Nm +.Fl r +reads) +.El +.Pp .Nm operates in one of two modes; if the .Ar duration @@ -77,6 +108,7 @@ argument determines the size of buffers to use for each .Fn ioat_copy invocation. The default is 256 KB. +In raw mode, the default is 4 KB. .Pp The .Ar chain-len |