From mboxrd@z Thu Jan 1 00:00:00 1970 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 78BBFC64ED6 for ; Tue, 28 Feb 2023 14:09:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229818AbjB1OJE (ORCPT ); Tue, 28 Feb 2023 09:09:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39416 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229821AbjB1OJC (ORCPT ); Tue, 28 Feb 2023 09:09:02 -0500 Received: from mail-pl1-x62e.google.com (mail-pl1-x62e.google.com [IPv6:2607:f8b0:4864:20::62e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E78F540C5 for ; Tue, 28 Feb 2023 06:08:56 -0800 (PST) Received: by mail-pl1-x62e.google.com with SMTP id u5so7152834plq.7 for ; Tue, 28 Feb 2023 06:08:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:from:to:cc:subject:date:message-id:reply-to; bh=DPAZ+DyQMPqAhaZ6QueG0f3uMjOUkdP2TgQuzmJmNCg=; b=Iovp/w0gmqRFvY08uYbNzcsoi75wBM6zPzYPLElzMPIWV4qzaDpwAyNly8m/bbGzZ1 b2XynANeu16wNKDzJPJu92FkxUP4AXhQxURMw1zquO36ZTjrBJjL95TY6A45KPKIaWrE 5S+EPQhGS+ND/0Y42+UUqP9JXdPSVTWFQ4DXA= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=DPAZ+DyQMPqAhaZ6QueG0f3uMjOUkdP2TgQuzmJmNCg=; b=DuKCi/+haGIA7XWkbiqp/Y0Mj1ZKhfuW2kddeexgy/aHmJNeZ/nN/4Rg7MeQ2SkE5E BsTVC1/FH5n/9v80Shbc8Bc46vr2YkO/vYqXj3f8yICvEG6u3i0py4Ew+uTF5Ocb1Rbl dSmieh5CrID0xnLW+N/eAIW/qfM2Bh3b5igDzfE9bBhGklyOOj8mHoh4EUtt9Aox+PEh yvN2I8QAnZsSVUaN96YAAK5a+zbinXQma2tRoRa96F98KuzfFY7Ho53fBxusOKcFXJnU uUWTPs7OJh8W9tWHmRZ1M4FaOKc5eYAQunl2ty7DZ2KwwzsKyMA37y6KfJ512XeB1ZI4 3XNw== X-Gm-Message-State: AO0yUKV378uj3GZUq/G+hX/LQG19jx3kQEYkSc4Q16syvyUEUu6fbU52 wMc6eGLvi8RfIir0c05O1uCc5QXkAMo8aQnsCy/h7+N8pgbcO8jE62dc5yUOhbREmsKmCMufH3T UhCjlCPS1Ll1svziGOl5ZFxUKJ3QPke7l3E5W8vmb7yMMJHN5nmrjxFHhiGucreYHLSxw6Nq6xh a0l/pUwpE= X-Google-Smtp-Source: AK7set+6rsJI/w2ufJ2EkfcqOzMLXwFZ2c/2tdFzGHgbhMPZqcDzl40llVjFwG2kQEHcsc8vc0Qyhg== X-Received: by 2002:a17:902:dac8:b0:19c:fc41:2dfd with SMTP id q8-20020a170902dac800b0019cfc412dfdmr3376207plx.29.1677593336108; Tue, 28 Feb 2023 06:08:56 -0800 (PST) Received: from localhost.localdomain ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id ji1-20020a170903324100b00198e03c3ad4sm6625465plb.278.2023.02.28.06.08.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Feb 2023 06:08:55 -0800 (PST) From: Ranjan Kumar To: linux-scsi@vger.kernel.org, martin.petersen@oracle.com Cc: rajsekhar.chundru@broadcom.com, sathya.prakash@broadcom.com, sumit.saxena@broadcom.com, Ranjan Kumar , Sreekanth Reddy Subject: [PATCH 1/6] mpi3mr: IOCTL timeout when disable/enable Interpt Date: Tue, 28 Feb 2023 06:08:30 -0800 Message-Id: <20230228140835.4075-2-ranjan.kumar@broadcom.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20230228140835.4075-1-ranjan.kumar@broadcom.com> References: <20230228140835.4075-1-ranjan.kumar@broadcom.com> MIME-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="000000000000e6b8b405f5c32290" Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org --000000000000e6b8b405f5c32290 Content-Transfer-Encoding: 8bit As part of Task Management handling, the driver will disable and enable the MSIx index zero which belongs to the Admin reply queue. And while enabling the interrupts driver loses some interrupts and it leads to Admin requests such as IOCTL timeout. So, after enabling the interrupts, poll the Admin reply queue to avoid timeouts. Signed-off-by: Ranjan Kumar Signed-off-by: Sreekanth Reddy --- drivers/scsi/mpi3mr/mpi3mr.h | 3 +++ drivers/scsi/mpi3mr/mpi3mr_fw.c | 12 ++++++++++-- drivers/scsi/mpi3mr/mpi3mr_os.c | 1 + 3 files changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/mpi3mr/mpi3mr.h b/drivers/scsi/mpi3mr/mpi3mr.h index def4c5e15cd8..24e6b1f71107 100644 --- a/drivers/scsi/mpi3mr/mpi3mr.h +++ b/drivers/scsi/mpi3mr/mpi3mr.h @@ -903,6 +903,7 @@ struct scmd_priv { * @admin_reply_ephase:Admin reply queue expected phase * @admin_reply_base: Admin reply queue base virtual address * @admin_reply_dma: Admin reply queue base dma address + * @admin_reply_q_in_use: Queue is handled by poll/ISR * @ready_timeout: Controller ready timeout * @intr_info: Interrupt cookie pointer * @intr_info_count: Number of interrupt cookies @@ -1059,6 +1060,7 @@ struct mpi3mr_ioc { u8 admin_reply_ephase; void *admin_reply_base; dma_addr_t admin_reply_dma; + atomic_t admin_reply_q_in_use; u32 ready_timeout; @@ -1397,4 +1399,5 @@ void mpi3mr_add_event_wait_for_device_refresh(struct mpi3mr_ioc *mrioc); void mpi3mr_flush_drv_cmds(struct mpi3mr_ioc *mrioc); void mpi3mr_flush_cmds_for_unrecovered_controller(struct mpi3mr_ioc *mrioc); void mpi3mr_free_enclosure_list(struct mpi3mr_ioc *mrioc); +int mpi3mr_process_admin_reply_q(struct mpi3mr_ioc *mrioc); #endif /*MPI3MR_H_INCLUDED*/ diff --git a/drivers/scsi/mpi3mr/mpi3mr_fw.c b/drivers/scsi/mpi3mr/mpi3mr_fw.c index 0c4aabaefdcc..e7ea3f7b9205 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_fw.c +++ b/drivers/scsi/mpi3mr/mpi3mr_fw.c @@ -415,7 +415,7 @@ static void mpi3mr_process_admin_reply_desc(struct mpi3mr_ioc *mrioc, le64_to_cpu(scsi_reply->sense_data_buffer_address)); } -static int mpi3mr_process_admin_reply_q(struct mpi3mr_ioc *mrioc) +int mpi3mr_process_admin_reply_q(struct mpi3mr_ioc *mrioc) { u32 exp_phase = mrioc->admin_reply_ephase; u32 admin_reply_ci = mrioc->admin_reply_ci; @@ -423,12 +423,17 @@ static int mpi3mr_process_admin_reply_q(struct mpi3mr_ioc *mrioc) u64 reply_dma = 0; struct mpi3_default_reply_descriptor *reply_desc; + if (!atomic_add_unless(&mrioc->admin_reply_q_in_use, 1, 1)) + return 0; + reply_desc = (struct mpi3_default_reply_descriptor *)mrioc->admin_reply_base + admin_reply_ci; if ((le16_to_cpu(reply_desc->reply_flags) & - MPI3_REPLY_DESCRIPT_FLAGS_PHASE_MASK) != exp_phase) + MPI3_REPLY_DESCRIPT_FLAGS_PHASE_MASK) != exp_phase) { + atomic_dec(&mrioc->admin_reply_q_in_use); return 0; + } do { if (mrioc->unrecoverable) @@ -454,6 +459,7 @@ static int mpi3mr_process_admin_reply_q(struct mpi3mr_ioc *mrioc) writel(admin_reply_ci, &mrioc->sysif_regs->admin_reply_queue_ci); mrioc->admin_reply_ci = admin_reply_ci; mrioc->admin_reply_ephase = exp_phase; + atomic_dec(&mrioc->admin_reply_q_in_use); return num_admin_replies; } @@ -2608,6 +2614,7 @@ static int mpi3mr_setup_admin_qpair(struct mpi3mr_ioc *mrioc) mrioc->admin_reply_ci = 0; mrioc->admin_reply_ephase = 1; mrioc->admin_reply_base = NULL; + atomic_set(&mrioc->admin_reply_q_in_use, 0); if (!mrioc->admin_req_base) { mrioc->admin_req_base = dma_alloc_coherent(&mrioc->pdev->dev, @@ -4171,6 +4178,7 @@ void mpi3mr_memset_buffers(struct mpi3mr_ioc *mrioc) memset(mrioc->admin_req_base, 0, mrioc->admin_req_q_sz); if (mrioc->admin_reply_base) memset(mrioc->admin_reply_base, 0, mrioc->admin_reply_q_sz); + atomic_set(&mrioc->admin_reply_q_in_use, 0); if (mrioc->init_cmds.reply) { memset(mrioc->init_cmds.reply, 0, sizeof(*mrioc->init_cmds.reply)); diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c index 3306de7170f6..2ba1b7641bc2 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_os.c +++ b/drivers/scsi/mpi3mr/mpi3mr_os.c @@ -3720,6 +3720,7 @@ int mpi3mr_issue_tm(struct mpi3mr_ioc *mrioc, u8 tm_type, mpi3mr_poll_pend_io_completions(mrioc); mpi3mr_ioc_enable_intr(mrioc); mpi3mr_poll_pend_io_completions(mrioc); + mpi3mr_process_admin_reply_q(mrioc); } switch (tm_type) { case MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET: -- 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