> From: Santosh Shukla [mailto:santosh.shu...@caviumnetworks.com] > Sent: Thursday, August 31, 2017 4:26 AM > To: dev@dpdk.org > Cc: tho...@monjalon.net; jerin.ja...@caviumnetworks.com; > hemant.agra...@nxp.com; olivier.m...@6wind.com; > maxime.coque...@redhat.com; Gonzalez Monroy, Sergio > <sergio.gonzalez.mon...@intel.com>; Richardson, Bruce > <bruce.richard...@intel.com>; shreyansh.j...@nxp.com; > gaetan.ri...@6wind.com; Burakov, Anatoly <anatoly.bura...@intel.com>; > step...@networkplumber.org; acon...@redhat.com; Santosh Shukla > <santosh.shu...@caviumnetworks.com> > Subject: [PATCH v7 3/9] linuxapp/eal_pci: get iommu class > > Get iommu class of PCI device on the bus and returns preferred iova > mapping mode for that bus. > > Patch also introduces RTE_PCI_DRV_IOVA_AS_VA drv flag. > Flag used when driver needs to operate in iova=va mode. > > Algorithm for iova scheme selection for PCI bus: > 0. If no device bound then return with RTE_IOVA_DC mapping mode, else > goto 1). > 1. Look for device attached to vfio kdrv and has .drv_flag set to > RTE_PCI_DRV_IOVA_AS_VA. > 2. Look for any device attached to UIO class of driver. > 3. Check for vfio-noiommu mode enabled. > > If 2) & 3) is false and 1) is true then select mapping scheme as RTE_IOVA_VA. > Otherwise use default mapping scheme (RTE_IOVA_PA). > > Signed-off-by: Santosh Shukla <santosh.shu...@caviumnetworks.com> > Signed-off-by: Jerin Jacob <jerin.ja...@caviumnetworks.com> > Reviewed-by: Maxime Coquelin <maxime.coque...@redhat.com> > Acked-by: Hemant Agrawal <hemant.agra...@nxp.com> > ---
Reviewed-by: Anatoly Burakov <anatoly.bura...@intel.com>
