svn commit: r355152 - in stable/11/sys/dev/ntb: . ntb_hw

[Alexander Motin]

Author: mav
Date: Thu Nov 28 00:41:42 2019
New Revision: 355152
URL: https://svnweb.freebsd.org/changeset/base/355152

Log:
  MFC r354702:
  Make ntb(4) send bus_get_dma_tag() requests to parent buses passing real
  bus' child pointers instead of grandchilds.
  
  DMAR does not like requests from devices not parented directly by PCI.

Modified:
  stable/11/sys/dev/ntb/ntb.c
  stable/11/sys/dev/ntb/ntb.h
  stable/11/sys/dev/ntb/ntb_hw/ntb_hw_intel.c
  stable/11/sys/dev/ntb/ntb_hw/ntb_hw_plx.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/dev/ntb/ntb.c
==============================================================================
--- stable/11/sys/dev/ntb/ntb.c	Thu Nov 28 00:40:42 2019	(r355151)
+++ stable/11/sys/dev/ntb/ntb.c	Thu Nov 28 00:41:42 2019	(r355152)
@@ -205,6 +205,13 @@ ntb_print_child(device_t dev, device_t child)
 	return (retval);
 }
 
+bus_dma_tag_t
+ntb_get_dma_tag(device_t bus, device_t child)
+{
+
+	return (bus_get_dma_tag(bus));
+}
+
 void
 ntb_link_event(device_t dev)
 {

Modified: stable/11/sys/dev/ntb/ntb.h
==============================================================================
--- stable/11/sys/dev/ntb/ntb.h	Thu Nov 28 00:40:42 2019	(r355151)
+++ stable/11/sys/dev/ntb/ntb.h	Thu Nov 28 00:41:42 2019	(r355152)
@@ -39,6 +39,7 @@ int ntb_unregister_device(device_t ntb);
 int ntb_child_location_str(device_t dev, device_t child, char *buf,
     size_t buflen);
 int ntb_print_child(device_t dev, device_t child);
+bus_dma_tag_t ntb_get_dma_tag(device_t bus, device_t child);
 
 /*
  * ntb_link_event() - notify driver context of a change in link status

Modified: stable/11/sys/dev/ntb/ntb_hw/ntb_hw_intel.c
==============================================================================
--- stable/11/sys/dev/ntb/ntb_hw/ntb_hw_intel.c	Thu Nov 28 00:40:42 2019	(r355151)
+++ stable/11/sys/dev/ntb/ntb_hw/ntb_hw_intel.c	Thu Nov 28 00:41:42 2019	(r355152)
@@ -3088,6 +3088,7 @@ static device_method_t ntb_intel_methods[] = {
 	/* Bus interface */
 	DEVMETHOD(bus_child_location_str, ntb_child_location_str),
 	DEVMETHOD(bus_print_child,	ntb_print_child),
+	DEVMETHOD(bus_get_dma_tag,	ntb_get_dma_tag),
 	/* NTB interface */
 	DEVMETHOD(ntb_link_is_up,	intel_ntb_link_is_up),
 	DEVMETHOD(ntb_link_enable,	intel_ntb_link_enable),

Modified: stable/11/sys/dev/ntb/ntb_hw/ntb_hw_plx.c
==============================================================================
--- stable/11/sys/dev/ntb/ntb_hw/ntb_hw_plx.c	Thu Nov 28 00:40:42 2019	(r355151)
+++ stable/11/sys/dev/ntb/ntb_hw/ntb_hw_plx.c	Thu Nov 28 00:41:42 2019	(r355152)
@@ -1009,6 +1009,7 @@ static device_method_t ntb_plx_methods[] = {
 	/* Bus interface */
 	DEVMETHOD(bus_child_location_str, ntb_child_location_str),
 	DEVMETHOD(bus_print_child,	ntb_print_child),
+	DEVMETHOD(bus_get_dma_tag,	ntb_get_dma_tag),
 	/* NTB interface */
 	DEVMETHOD(ntb_link_is_up,	ntb_plx_link_is_up),
 	DEVMETHOD(ntb_link_enable,	ntb_plx_link_enable),