On 18/09/2017 10:31 AM, Gaetan Rivet wrote:
Hi all,

Here is a new version of the PCI bus move out of the EAL.

The EAL PCI implementation is divided in two parts:

   - librte_pci: library offering helpers to handle PCI objects
   - librte_bus_pci: bus driver for PCI devices

This allows other libraries / tools to use PCI elements (location, mappings,
parsing operations, etc) without forcing a dependency on a bus driver.

The latter should not have to export helpers that others might need. It
is focused on defining the rte_pci_device, rte_pci_driver objects and
their handling.

The cryptodev library has hard dependencies on rte_pci_devices (used by
generic probe function). Other similar libs (ether and eventdev) avoided
the issue by inlining such functions and expecting users to include the
relevant headers once the PCI bus has already been built.

@Declan:
I proposed a solution that would avoid inlining those functions,
which does not feel right. Let me know what you think of it or if you
think of a better solution. I think it would be best to have cryptodev
completely independent from PCI / vdev as far as the lib in concerned
(the vdev bus will move as well).



Hey Gaetan, apologies for the delay in getting back to you on this, I had been looking at this but got sidelined onto other issues before usersapce and I'm only getting back to it now. I think that while your solution works it just highlights the dependency which probably shouldn't be there between the cryptodev library and PCI devices. I've had a look, and the functions in the cryptodev which you moved don't really provide that much useful functionality. I done some testing and completely removed them and just update the QAT PMD which is the only crypto PMD which was using them and it seems much cleaner to me. I'll push a patch for this change later today and it will allow you to drop the patch "cryptodev: move PCI specific helpers to drivers/crypto" from this set.

Regards
Declan



v2:

   + Made rte_eal_using_phys_addrs common to both linux and bsd interfaces.
   + Added documentation of EAL API changes in release note.
   + Fixed a few rebase-related mistakes.
   + Fixed parallel build race condition reported by Luca Boccassi.
   + Grouped together commits breaking compilation:

     -> pci: introduce PCI lib and bus
     -> lib: include rte_bus_pci
     -> drivers: include rte_bus_pci
     -> test: include rte_bus_pci
     -> app/testpmd: include rte_bus_pci
     -> cryptodev: move PCI specific helpers to drivers/crypto

   Until all of them have been applied, compilation is broken.
   I am currently wondering whether merging some of them might
   be sensible.

   + Not included in this series:

     Several filesystem-related functions are currently
     private to the EAL and directly linked. This is not good,
     but the solution seems to be to have a new lib offering an FS abstraction.
     This seems an overreach for this patchset and should probably come in a
     second step.

Gaetan Rivet (14):
   eal: expose rte_eal_using_phys_addrs
   ethdev: remove useless PCI dependency
   bus: properly include rte_debug
   eal: remove references to PCI
   pci: introduce PCI lib and bus
   lib: include rte_bus_pci
   drivers: include rte_bus_pci
   test: include rte_bus_pci
   app/testpmd: include rte_bus_pci
   cryptodev: move PCI specific helpers to drivers/crypto
   pci: avoid inlining functions
   pci: avoid over-complicated macro
   pci: deprecate misnamed functions
   doc: add notes on EAL PCI API update

  app/test-pmd/testpmd.h                           |   1 +
  config/common_base                               |  10 +
  doc/guides/rel_notes/deprecation.rst             |  10 +
  doc/guides/rel_notes/release_17_11.rst           |  28 +
  drivers/Makefile                                 |   2 +-
  drivers/bus/Makefile                             |   2 +
  drivers/bus/pci/Makefile                         |  59 ++
  drivers/bus/pci/bsd/Makefile                     |  32 +
  drivers/bus/pci/bsd/rte_pci.c                    | 671 +++++++++++++++++++++
  drivers/bus/pci/include/rte_bus_pci.h            | 387 ++++++++++++
  drivers/bus/pci/linux/Makefile                   |  37 ++
  drivers/bus/pci/linux/rte_pci.c                  | 723 +++++++++++++++++++++++
  drivers/bus/pci/linux/rte_pci_init.h             |  97 +++
  drivers/bus/pci/linux/rte_pci_uio.c              | 568 ++++++++++++++++++
  drivers/bus/pci/linux/rte_pci_vfio.c             | 675 +++++++++++++++++++++
  drivers/bus/pci/linux/rte_vfio_mp_sync.c         | 425 +++++++++++++
  drivers/bus/pci/private.h                        | 174 ++++++
  drivers/bus/pci/rte_bus_pci_version.map          |  21 +
  drivers/bus/pci/rte_pci_common.c                 | 543 +++++++++++++++++
  drivers/bus/pci/rte_pci_common_uio.c             | 235 ++++++++
  drivers/crypto/Makefile                          |   4 +-
  drivers/crypto/pci/Makefile                      |  52 ++
  drivers/crypto/pci/rte_cryptodev_pci.c           | 128 ++++
  drivers/crypto/pci/rte_cryptodev_pci.h           |  94 +++
  drivers/crypto/pci/rte_cryptodev_pci_version.map |   7 +
  drivers/crypto/qat/qat_qp.c                      |   1 +
  drivers/event/octeontx/ssovf_probe.c             |   1 +
  drivers/net/ark/ark_ethdev.c                     |   1 +
  drivers/net/avp/avp_ethdev.c                     |   2 +
  drivers/net/bnxt/bnxt.h                          |   1 +
  drivers/net/bonding/rte_eth_bond_args.c          |   1 +
  drivers/net/cxgbe/base/adapter.h                 |   1 +
  drivers/net/cxgbe/cxgbe_ethdev.c                 |   1 +
  drivers/net/e1000/em_ethdev.c                    |   1 +
  drivers/net/e1000/igb_ethdev.c                   |   1 +
  drivers/net/e1000/igb_pf.c                       |   1 +
  drivers/net/ena/ena_ethdev.h                     |   1 +
  drivers/net/enic/base/vnic_dev.h                 |   4 +-
  drivers/net/enic/enic_ethdev.c                   |   1 +
  drivers/net/enic/enic_main.c                     |   1 +
  drivers/net/i40e/i40e_ethdev.c                   |   1 +
  drivers/net/i40e/i40e_ethdev_vf.c                |   1 +
  drivers/net/ixgbe/ixgbe_ethdev.c                 |   1 +
  drivers/net/ixgbe/ixgbe_ethdev.h                 |   1 +
  drivers/net/mlx5/mlx5.c                          |   1 +
  drivers/net/mlx5/mlx5_ethdev.c                   |   1 +
  drivers/net/sfc/sfc.h                            |   1 +
  drivers/net/sfc/sfc_ethdev.c                     |   1 +
  drivers/net/thunderx/nicvf_ethdev.c              |   1 +
  drivers/net/virtio/virtio_ethdev.c               |   1 +
  drivers/net/virtio/virtio_pci.h                  |   1 +
  drivers/net/vmxnet3/vmxnet3_ethdev.c             |   1 +
  lib/Makefile                                     |   2 +
  lib/librte_cryptodev/Makefile                    |   1 -
  lib/librte_cryptodev/rte_cryptodev_pci.h         |  92 ---
  lib/librte_cryptodev/rte_cryptodev_pmd.c         |  94 ---
  lib/librte_cryptodev/rte_cryptodev_version.map   |   2 -
  lib/librte_eal/bsdapp/eal/Makefile               |   3 -
  lib/librte_eal/bsdapp/eal/eal.c                  |   1 -
  lib/librte_eal/bsdapp/eal/eal_memory.c           |   6 +
  lib/librte_eal/bsdapp/eal/eal_pci.c              | 670 ---------------------
  lib/librte_eal/bsdapp/eal/rte_eal_version.map    |  16 +-
  lib/librte_eal/common/Makefile                   |   2 +-
  lib/librte_eal/common/eal_common_bus.c           |   1 +
  lib/librte_eal/common/eal_common_pci.c           | 580 ------------------
  lib/librte_eal/common/eal_common_pci_uio.c       | 233 --------
  lib/librte_eal/common/eal_private.h              | 143 -----
  lib/librte_eal/common/include/rte_memory.h       |  11 +
  lib/librte_eal/common/include/rte_pci.h          | 598 -------------------
  lib/librte_eal/linuxapp/eal/Makefile             |  10 -
  lib/librte_eal/linuxapp/eal/eal.c                |   1 -
  lib/librte_eal/linuxapp/eal/eal_interrupts.c     |   1 -
  lib/librte_eal/linuxapp/eal/eal_memory.c         |   2 +-
  lib/librte_eal/linuxapp/eal/eal_pci.c            | 722 ----------------------
  lib/librte_eal/linuxapp/eal/eal_pci_init.h       |  97 ---
  lib/librte_eal/linuxapp/eal/eal_pci_uio.c        | 567 ------------------
  lib/librte_eal/linuxapp/eal/eal_pci_vfio.c       | 674 ---------------------
  lib/librte_eal/linuxapp/eal/eal_vfio_mp_sync.c   | 424 -------------
  lib/librte_eal/linuxapp/eal/rte_eal_version.map  |  16 +-
  lib/librte_ether/rte_ethdev.c                    |   1 -
  lib/librte_ether/rte_ethdev.h                    |   2 -
  lib/librte_ether/rte_ethdev_pci.h                |   1 +
  lib/librte_eventdev/rte_eventdev_pmd_pci.h       |   1 +
  lib/librte_pci/Makefile                          |  48 ++
  lib/librte_pci/include/rte_pci.h                 | 285 +++++++++
  lib/librte_pci/rte_pci.c                         | 210 +++++++
  lib/librte_pci/rte_pci_version.map               |  16 +
  mk/rte.app.mk                                    |   3 +
  test/test/test_kni.c                             |   1 +
  test/test/virtual_pmd.c                          |   1 +
  90 files changed, 5603 insertions(+), 4951 deletions(-)
  create mode 100644 drivers/bus/pci/Makefile
  create mode 100644 drivers/bus/pci/bsd/Makefile
  create mode 100644 drivers/bus/pci/bsd/rte_pci.c
  create mode 100644 drivers/bus/pci/include/rte_bus_pci.h
  create mode 100644 drivers/bus/pci/linux/Makefile
  create mode 100644 drivers/bus/pci/linux/rte_pci.c
  create mode 100644 drivers/bus/pci/linux/rte_pci_init.h
  create mode 100644 drivers/bus/pci/linux/rte_pci_uio.c
  create mode 100644 drivers/bus/pci/linux/rte_pci_vfio.c
  create mode 100644 drivers/bus/pci/linux/rte_vfio_mp_sync.c
  create mode 100644 drivers/bus/pci/private.h
  create mode 100644 drivers/bus/pci/rte_bus_pci_version.map
  create mode 100644 drivers/bus/pci/rte_pci_common.c
  create mode 100644 drivers/bus/pci/rte_pci_common_uio.c
  create mode 100644 drivers/crypto/pci/Makefile
  create mode 100644 drivers/crypto/pci/rte_cryptodev_pci.c
  create mode 100644 drivers/crypto/pci/rte_cryptodev_pci.h
  create mode 100644 drivers/crypto/pci/rte_cryptodev_pci_version.map
  delete mode 100644 lib/librte_cryptodev/rte_cryptodev_pci.h
  delete mode 100644 lib/librte_eal/bsdapp/eal/eal_pci.c
  delete mode 100644 lib/librte_eal/common/eal_common_pci.c
  delete mode 100644 lib/librte_eal/common/eal_common_pci_uio.c
  delete mode 100644 lib/librte_eal/common/include/rte_pci.h
  delete mode 100644 lib/librte_eal/linuxapp/eal/eal_pci.c
  delete mode 100644 lib/librte_eal/linuxapp/eal/eal_pci_init.h
  delete mode 100644 lib/librte_eal/linuxapp/eal/eal_pci_uio.c
  delete mode 100644 lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
  delete mode 100644 lib/librte_eal/linuxapp/eal/eal_vfio_mp_sync.c
  create mode 100644 lib/librte_pci/Makefile
  create mode 100644 lib/librte_pci/include/rte_pci.h
  create mode 100644 lib/librte_pci/rte_pci.c
  create mode 100644 lib/librte_pci/rte_pci_version.map


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