Author: mav
Date: Thu Nov 14 04:34:58 2019
New Revision: 354702
URL: https://svnweb.freebsd.org/changeset/base/354702
Log:
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.
MFC after: 2 weeks
Modified:
head/sys/dev/ntb/ntb.c
head/sys/dev/ntb/ntb.h
head/sys/dev/ntb/ntb_hw/ntb_hw_amd.c
head/sys/dev/ntb/ntb_hw/ntb_hw_intel.c
head/sys/dev/ntb/ntb_hw/ntb_hw_plx.c
Modified: head/sys/dev/ntb/ntb.c
==============================================================================
--- head/sys/dev/ntb/ntb.c Thu Nov 14 04:34:17 2019 (r354701)
+++ head/sys/dev/ntb/ntb.c Thu Nov 14 04:34:58 2019 (r354702)
@@ -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: head/sys/dev/ntb/ntb.h
==============================================================================
--- head/sys/dev/ntb/ntb.h Thu Nov 14 04:34:17 2019 (r354701)
+++ head/sys/dev/ntb/ntb.h Thu Nov 14 04:34:58 2019 (r354702)
@@ -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: head/sys/dev/ntb/ntb_hw/ntb_hw_amd.c
==============================================================================
--- head/sys/dev/ntb/ntb_hw/ntb_hw_amd.c Thu Nov 14 04:34:17 2019
(r354701)
+++ head/sys/dev/ntb/ntb_hw/ntb_hw_amd.c Thu Nov 14 04:34:58 2019
(r354702)
@@ -1266,6 +1266,7 @@ static device_method_t ntb_amd_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_port_number, amd_ntb_port_number),
Modified: head/sys/dev/ntb/ntb_hw/ntb_hw_intel.c
==============================================================================
--- head/sys/dev/ntb/ntb_hw/ntb_hw_intel.c Thu Nov 14 04:34:17 2019
(r354701)
+++ head/sys/dev/ntb/ntb_hw/ntb_hw_intel.c Thu Nov 14 04:34:58 2019
(r354702)
@@ -3124,6 +3124,7 @@ 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_port_number, intel_ntb_port_number),
DEVMETHOD(ntb_peer_port_count, intel_ntb_peer_port_count),
Modified: head/sys/dev/ntb/ntb_hw/ntb_hw_plx.c
==============================================================================
--- head/sys/dev/ntb/ntb_hw/ntb_hw_plx.c Thu Nov 14 04:34:17 2019
(r354701)
+++ head/sys/dev/ntb/ntb_hw/ntb_hw_plx.c Thu Nov 14 04:34:58 2019
(r354702)
@@ -1046,6 +1046,7 @@ 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_port_number, ntb_plx_port_number),
DEVMETHOD(ntb_peer_port_count, ntb_plx_peer_port_count),
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