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Call bus_dma_dmar_set_buswide(9) added in r354830.

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PLX NTB sends translated DMA requests not only from itsels, but from all
slots and functions of its bus.  By default DMAR blocks those additional.

MFC after:	1 week
Sponsored by:	iXsystems, Inc.
This commit is contained in:
Alexander Motin 2019-11-19 02:03:10 +00:00
parent 309d2bc890
commit f0dd6a1787
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=354840
1 changed files with 6 additions and 0 deletions
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6
sys/dev/ntb/ntb_hw/ntb_hw_plx.c
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@ -339,6 +339,12 @@ ntb_plx_attach(device_t dev)
return (ENXIO);
}
/*
* The device occupies whole bus. In translated TLP slot field
* keeps LUT index (original bus/slot), function is passed through.
*/
bus_dma_dmar_set_buswide(dev);
/* Identify chip port we are connected to. */
val = bus_read_4(sc->conf_res, 0x360);
sc->port = (val >> ((sc->ntx == 0) ? 8 : 16)) & 0x1f;