From: Sunil Kumar Kori <sk...@marvell.com> Adding region based device mapping support, which enables pci device to map only required memory region instead of mapping full BAR.
Signed-off-by: Sunil Kumar Kori <sk...@marvell.com> --- doc/guides/rel_notes/deprecation.rst | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst index 4e5b23c53d..8800a3eb41 100644 --- a/doc/guides/rel_notes/deprecation.rst +++ b/doc/guides/rel_notes/deprecation.rst @@ -125,3 +125,16 @@ Deprecation Notices applications should be updated to use the ``dmadev`` library instead, with the underlying HW-functionality being provided by the ``ioat`` or ``idxd`` dma drivers + +* pci: Update ``rte_pci_device`` and ``rte_pci_driver`` to add region based + memory mapping support. There could be a requirement to mmap specific memory + region only. Using this mechanism, pci device can be mapped for + a given BAR at a given offset of given size. + + ``rte_pci_device`` will be added with following field + ``regions[PCI_MAX_RESOURCE][PCI_MAX_REGION_PER_RESOURCE];``. This field will + specify the regions which are mapped for a given BAR. + + ``rte_pci_driver`` will be added with ``rte_pci_region_map *regions`` and + ``valid_bars[PCI_MAX_RESOURCE]``. Using these fields, driver can propagate + its region information which are required to be mmap. -- 2.25.1
