Add auxiliary device driver for Broadcom devices. The bnxt_en driver will register and initialize an aux device if RDMA is enabled in the underlying device. The bnxt_re driver will then probe and initialize the RoCE interfaces with the infiniband stack. We got rid of the bnxt_en_ops which the bnxt_re driver used to communicate with bnxt_en. Similarly We have tried to clean up most of the bnxt_ulp_ops. In most of the cases we used the functions and entry points provided by the auxiliary bus driver framework. And now these are the minimal functions needed to support the functionality. We will try to work on getting rid of the remaining if we find any other viable option in future. v1->v2: - Incorporated review comments including usage of ulp_id & complex function indirections. - Used function calls provided by the auxiliary bus interface instead of proprietary calls. - Refactor code to remove ROCE driver's access to bnxt structure. v2->v3: - Addressed review comments including cleanup of some unnecessary wrappers - Fixed warnings seen during cross compilation v3->v4: - Cleaned up bnxt_ulp.c and bnxt_ulp.h further - Removed some more dead code - Sending the patchset as a standalone series v4->v5: - Removed the SRIOV config callback which bnxt_en driver was calling into bnxt_re driver. - Removed excessive checks for rdev and other pointers. v5->v6: - Removed excessive checks for dev and other pointers - Remove runtime interrupt vector allocation. bnxt_en preallocates interrupt vectors for bnxt_re to use. v6->v7: - Removed incorrect usage of inline - Updated Kconfig to select AUXILIARY BUS support - Addressed various comments including removal of unnecessary forward declaration, using static functions where possible, unnecessary jump, cleanup logic, etc.. - Added Leon's Reviewed-by, to the commit log in the patches, from previous version. v7->v8: - Addressed various comments to remove unnecessary check for id, removed setting pointer to NULL after free, renamed private pointers to avoid confusing them with the auxiliary device names and refactored some code accordingly. - Auxiliary device will be released through auxiliary_device_uninit(); v8->v9: - Fixed the cleanup code to use the auxiliary driver release function to free allocated memory. This allows the cleanup to be performed once the device reference count drops to 0. - Refactored the code to address the above. v9->v10: - Fixed residual comments like useless NULL assignments and variable initializations. Commit message uses Leon's Reviewed-by from earlier version. Please apply. Thanks. The following are changes since commit c0b67534c95c537f7a506a06b98e5e85d72e2b7d: Merge tag 'cgroup-for-6.2-fixes' in Linus's tree and are available in the git repository at: https://github.com/ajitkhaparde1/linux aux-bus-v10 for you to fetch changes upto 2daf6059f4cf2cd3f5f09e6beb4bba3e3a89b977: bnxt_en: Remove runtime interrupt vector allocation ---- Ajit Khaparde (7): bnxt_en: Add auxiliary driver support RDMA/bnxt_re: Use auxiliary driver interface bnxt_en: Remove usage of ulp_id bnxt_en: Use direct API instead of indirection bnxt_en: Use auxiliary bus calls over proprietary calls RDMA/bnxt_re: Remove the sriov config callback bnxt_en: Remove runtime interrupt vector allocation Hongguang Gao (1): bnxt_en: Remove struct bnxt access from RoCE driver drivers/infiniband/hw/bnxt_re/bnxt_re.h | 10 +- drivers/infiniband/hw/bnxt_re/main.c | 635 +++++++----------- drivers/net/ethernet/broadcom/Kconfig | 1 + drivers/net/ethernet/broadcom/bnxt/bnxt.c | 10 +- drivers/net/ethernet/broadcom/bnxt/bnxt.h | 8 + .../net/ethernet/broadcom/bnxt/bnxt_sriov.c | 7 +- drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c | 475 ++++++------- drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h | 51 +- 8 files changed, 462 insertions(+), 735 deletions(-) -- 2.37.1 (Apple Git-137.1)
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