From patchwork Thu Feb 2 03:38:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ajit Khaparde X-Patchwork-Id: 13125234 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 19FADC61DA4 for ; Thu, 2 Feb 2023 03:38:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231934AbjBBDiT (ORCPT ); Wed, 1 Feb 2023 22:38:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34430 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231614AbjBBDiS (ORCPT ); Wed, 1 Feb 2023 22:38:18 -0500 Received: from mail-qt1-x836.google.com (mail-qt1-x836.google.com [IPv6:2607:f8b0:4864:20::836]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C8F467AE46 for ; Wed, 1 Feb 2023 19:38:16 -0800 (PST) Received: by mail-qt1-x836.google.com with SMTP id z5so664027qtn.8 for ; Wed, 01 Feb 2023 19:38:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=mime-version:message-id:date:subject:cc:to:from:from:to:cc:subject :date:message-id:reply-to; bh=h9EMnuucv/eBpcBY85Hc+GZMOTYJxdaMDxY8Ts4PUKk=; b=Py+rS8QrILpXBTfi/+OUHP25OTYZhMdpXbAdhyeHw1FU4fYeOrZEtaG21V5bPy8m4X fG6FejfDdojhPLHbJjHIRo9FDjE9VkfBJZ67SUHGuyP4H++dAocgika175a5mlIpYAtr rLFRZ6lzV5Cl2WqWhFxY4QW27/gznjobA7kFU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=mime-version:message-id:date:subject:cc:to:from:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=h9EMnuucv/eBpcBY85Hc+GZMOTYJxdaMDxY8Ts4PUKk=; b=atAfQ9WMQXj2kPmX1Ur+UrehzxUgQFDazUEgrSY8nhCmYLgIirNzpQYd6oUI8mgsEQ qqlVD7yipd9PmSW/AuhEtvmft1GaeZLY963xwMkZUmq+a0MCM+VELLzCsrFgYi9EZ752 wrRMftxZPrcEpwy7SjMXZw7vjoSjOpguEaCeRKV7jY4zRj7gpVRWCMFhrl6wJt2RgQyj 6qZpCcCANoAJUf6wHSfS0IlFx/V5PoY9+sDiCwl3z/k0xfOWRzf7tz62Xil0Rv9/k0A/ QHIiBUj02wxMYuVsct3IRh88NTO8i4bfo9dldTGHhMaE2GLV8ulqcwOWgHRnjlWcTS7K wAyA== X-Gm-Message-State: AO0yUKXD5YhyPrtP/X15Ohz+m+q3fQ5P7bDGp+4xSDFviGcTUy4UFcga JfMk+nd4Tcd2z/apN/ZKPp7bcA== X-Google-Smtp-Source: AK7set9idjO5kPbdAAfIW9+l02MOTTnLI8/gYMoe+F+otLdP6JNhNSoXSKwn9VK5Gu582N6gs13zkQ== X-Received: by 2002:ac8:4e94:0:b0:3a8:e9e:e194 with SMTP id 20-20020ac84e94000000b003a80e9ee194mr7979412qtp.40.1675309095806; Wed, 01 Feb 2023 19:38:15 -0800 (PST) Received: from localhost.localdomain ([2605:a601:a780:1400:3d86:d226:5cc5:3432]) by smtp.gmail.com with ESMTPSA id p12-20020ac8408c000000b003b869f71eedsm7244487qtl.66.2023.02.01.19.38.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Feb 2023 19:38:14 -0800 (PST) From: Ajit Khaparde To: ajit.khaparde@broadcom.com Cc: andrew.gospodarek@broadcom.com, davem@davemloft.net, edumazet@google.com, jgg@ziepe.ca, kuba@kernel.org, leon@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, michael.chan@broadcom.com, netdev@vger.kernel.org, pabeni@redhat.com, selvin.xavier@broadcom.com, gregkh@linuxfoundation.org Subject: [PATCH net-next v11 0/8] Add Auxiliary driver support Date: Wed, 1 Feb 2023 19:38:01 -0800 Message-Id: <20230202033809.3989-1-ajit.khaparde@broadcom.com> X-Mailer: git-send-email 2.37.1 (Apple Git-137.1) MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org 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. v10->v11: - Addressed unused variable warning in patch 1 reported by kernel test robot. Commit message uses Leon's Reviewed-by from earlier version. Please apply. Thanks. The following are changes since commit 9f266ccaa2f5228bfe67ad58a94ca4e0109b954a: Merge tag 'for_linus' in Linus's tree and are available in the git repository at: https://github.com/ajitkhaparde1/linux aux-bus-v11 for you to fetch changes upto 30343221132430c24b468493c861f71e2bad131f: 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 | 474 ++++++------- drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.h | 51 +- 8 files changed, 461 insertions(+), 735 deletions(-)