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Make ntb(4) send bus_get_dma_tag() requests to parent buses passing real

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bus' child pointers instead of grandchilds.

DMAR does not like requests from devices not parented directly by PCI.

MFC after:	2 weeks
This commit is contained in:
mav 2019-11-14 04:34:58 +00:00
parent 49806b9c2c
commit ae3ffb6e2d
5 changed files with 11 additions and 0 deletions
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7
sys/dev/ntb/ntb.c
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@ -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)
{

1
sys/dev/ntb/ntb.h
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@ -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

1
sys/dev/ntb/ntb_hw/ntb_hw_amd.c
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@ -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),

1
sys/dev/ntb/ntb_hw/ntb_hw_intel.c
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@ -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),

1
sys/dev/ntb/ntb_hw/ntb_hw_plx.c
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@ -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),