svn commit: r354841 - head/sys/dev/ioat

[Alexander Motin]

Author: mav
Date: Tue Nov 19 02:09:04 2019
New Revision: 354841
URL: https://svnweb.freebsd.org/changeset/base/354841

Log:
  Add ioat_get_domain() to ioat(4) KPI.
  
  This allows NUMA-aware consumers to reduce inter-domain traffic.
  
  MFC after:	1 week
  Sponsored by:	iXsystems, Inc.

Modified:
  head/sys/dev/ioat/ioat.c
  head/sys/dev/ioat/ioat.h

Modified: head/sys/dev/ioat/ioat.c
==============================================================================
--- head/sys/dev/ioat/ioat.c	Tue Nov 19 02:03:10 2019	(r354840)
+++ head/sys/dev/ioat/ioat.c	Tue Nov 19 02:09:04 2019	(r354841)
@@ -1025,6 +1025,15 @@ ioat_get_capabilities(bus_dmaengine_t dmaengine)
 }
 
 int
+ioat_get_domain(bus_dmaengine_t dmaengine, int *domain)
+{
+	struct ioat_softc *ioat;
+
+	ioat = to_ioat_softc(dmaengine);
+	return (bus_get_domain(ioat->device, domain));
+}
+
+int
 ioat_set_interrupt_coalesce(bus_dmaengine_t dmaengine, uint16_t delay)
 {
 	struct ioat_softc *ioat;

Modified: head/sys/dev/ioat/ioat.h
==============================================================================
--- head/sys/dev/ioat/ioat.h	Tue Nov 19 02:03:10 2019	(r354840)
+++ head/sys/dev/ioat/ioat.h	Tue Nov 19 02:09:04 2019	(r354841)
@@ -131,6 +131,7 @@ void ioat_put_dmaengine(bus_dmaengine_t dmaengine);
 int ioat_get_hwversion(bus_dmaengine_t dmaengine);
 size_t ioat_get_max_io_size(bus_dmaengine_t dmaengine);
 uint32_t ioat_get_capabilities(bus_dmaengine_t dmaengine);
+int ioat_get_domain(bus_dmaengine_t dmaengine, int *domain);
 
 /*
  * Set interrupt coalescing on a DMA channel.