From owner-svn-src-stable@freebsd.org Thu May 16 15:45:12 2019 Return-Path: Delivered-To: svn-src-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 134D5159AB0A; Thu, 16 May 2019 15:45:12 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id AA6BF84905; Thu, 16 May 2019 15:45:11 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 85A0B22E93; Thu, 16 May 2019 15:45:11 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x4GFjB25046229; Thu, 16 May 2019 15:45:11 GMT (envelope-from hselasky@FreeBSD.org) Received: (from hselasky@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x4GFjADE046226; Thu, 16 May 2019 15:45:10 GMT (envelope-from hselasky@FreeBSD.org) Message-Id: <201905161545.x4GFjADE046226@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: hselasky set sender to hselasky@FreeBSD.org using -f From: Hans Petter Selasky Date: Thu, 16 May 2019 15:45:10 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r347716 - in stable/12/sys/dev/mlx5: . mlx5_core X-SVN-Group: stable-12 X-SVN-Commit-Author: hselasky X-SVN-Commit-Paths: in stable/12/sys/dev/mlx5: . mlx5_core X-SVN-Commit-Revision: 347716 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: AA6BF84905 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.96 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.998,0]; NEURAL_HAM_SHORT(-0.96)[-0.960,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 May 2019 15:45:12 -0000 Author: hselasky Date: Thu May 16 15:45:10 2019 New Revision: 347716 URL: https://svnweb.freebsd.org/changeset/base/347716 Log: MFC r347252: Disable all MSIX interrupts before shutdown in mlx5. Make sure the interrupt handlers don't race with the fast unload one code in the shutdown handler. Sponsored by: Mellanox Technologies Modified: stable/12/sys/dev/mlx5/driver.h stable/12/sys/dev/mlx5/mlx5_core/mlx5_cmd.c stable/12/sys/dev/mlx5/mlx5_core/mlx5_eq.c stable/12/sys/dev/mlx5/mlx5_core/mlx5_main.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/dev/mlx5/driver.h ============================================================================== --- stable/12/sys/dev/mlx5/driver.h Thu May 16 15:44:27 2019 (r347715) +++ stable/12/sys/dev/mlx5/driver.h Thu May 16 15:45:10 2019 (r347716) @@ -606,6 +606,7 @@ struct mlx5_priv { struct mlx5_irq_info *irq_info; struct mlx5_uuar_info uuari; MLX5_DECLARE_DOORBELL_LOCK(cq_uar_lock); + int disable_irqs; struct io_mapping *bf_mapping; Modified: stable/12/sys/dev/mlx5/mlx5_core/mlx5_cmd.c ============================================================================== --- stable/12/sys/dev/mlx5/mlx5_core/mlx5_cmd.c Thu May 16 15:44:27 2019 (r347715) +++ stable/12/sys/dev/mlx5/mlx5_core/mlx5_cmd.c Thu May 16 15:45:10 2019 (r347716) @@ -1143,6 +1143,9 @@ static void mlx5_cmd_change_mod(struct mlx5_core_dev * struct mlx5_cmd *cmd = &dev->cmd; int i; + if (cmd->mode == mode) + return; + for (i = 0; i < cmd->max_reg_cmds; i++) down(&cmd->sem); Modified: stable/12/sys/dev/mlx5/mlx5_core/mlx5_eq.c ============================================================================== --- stable/12/sys/dev/mlx5/mlx5_core/mlx5_eq.c Thu May 16 15:44:27 2019 (r347715) +++ stable/12/sys/dev/mlx5/mlx5_core/mlx5_eq.c Thu May 16 15:45:10 2019 (r347716) @@ -395,7 +395,9 @@ static irqreturn_t mlx5_msix_handler(int irq, void *eq struct mlx5_eq *eq = eq_ptr; struct mlx5_core_dev *dev = eq->dev; - mlx5_eq_int(dev, eq); + /* check if IRQs are not disabled */ + if (likely(dev->priv.disable_irqs == 0)) + mlx5_eq_int(dev, eq); /* MSI-X vectors always belong to us */ return IRQ_HANDLED; Modified: stable/12/sys/dev/mlx5/mlx5_core/mlx5_main.c ============================================================================== --- stable/12/sys/dev/mlx5/mlx5_core/mlx5_main.c Thu May 16 15:44:27 2019 (r347715) +++ stable/12/sys/dev/mlx5/mlx5_core/mlx5_main.c Thu May 16 15:45:10 2019 (r347716) @@ -35,6 +35,7 @@ #include #include #include +#include #include #include #include @@ -1443,11 +1444,29 @@ static int mlx5_try_fast_unload(struct mlx5_core_dev * return 0; } +static void mlx5_disable_interrupts(struct mlx5_core_dev *mdev) +{ + int nvec = mdev->priv.eq_table.num_comp_vectors + MLX5_EQ_VEC_COMP_BASE; + int x; + + mdev->priv.disable_irqs = 1; + + /* wait for all IRQ handlers to finish processing */ + for (x = 0; x != nvec; x++) + synchronize_irq(mdev->priv.msix_arr[x].vector); +} + static void shutdown_one(struct pci_dev *pdev) { struct mlx5_core_dev *dev = pci_get_drvdata(pdev); struct mlx5_priv *priv = &dev->priv; int err; + + /* enter polling mode */ + mlx5_cmd_use_polling(dev); + + /* disable all interrupts */ + mlx5_disable_interrupts(dev); err = mlx5_try_fast_unload(dev); if (err)