> 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 4/9] bus: get iommu class > > API(rte_bus_get_iommu_class) helps to automatically detect and select > appropriate iova mapping scheme for iommu capable device on that bus. > > Algorithm for iova scheme selection for bus: > 0. Iterate through bus_list. > 1. Collect each bus iova mode value and update into 'mode' var. > 2. Mode selection scheme is: > if mode == 0 then iova mode is _pa, > if mode == 1 then iova mode is _pa, > if mode == 2 then iova mode is _va, > if mode == 3 then iova mode ia _pa. > > So mode !=2 will be default iova mode (_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>
