From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f98.google.com (mail-pj1-f98.google.com [209.85.216.98]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 414CA432BE3 for ; Wed, 5 Aug 2026 11:14:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.98 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785928455; cv=none; b=W7VLvfhEksHfpRSzCJaF+oDGrLyg0lpHlpK99h2+C/Fjuh/11d+AvUDW+6R4Bssjs8fxkBUFC0brnICAYY7wDRW8O1cLq7tSSivqECGO9U17moBsgq8vdoyonbuOHkGvupKxO8liXmEh2UhcKheZJddcrmnqZ0fitacYD9UaGc8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785928455; c=relaxed/simple; bh=KN+ul6i3x9eKvBQzJJ7j2q9bd7SXEnRF9RHlgoJTIFc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JQPVWfE+BSQMM0/B2Ht2Gl3OIFXkcx1bwvSQ3OVUB48ijrCkm29gBBzjQkI3GVyXv9IC3ME6JVfhIHLtYUJQbZw991nLcVM0Vok1j+gTJrEVw0jkgwH0FRvS8QZjw6vAqCIP7XH269WG7YKMhzSWmRHUgYrJBxHq8TbanC1s670= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=broadcom.com; spf=fail smtp.mailfrom=broadcom.com; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b=Uxq3sSQ6; arc=none smtp.client-ip=209.85.216.98 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=broadcom.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=broadcom.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="Uxq3sSQ6" Received: by mail-pj1-f98.google.com with SMTP id 98e67ed59e1d1-38d489b6b71so809306a91.0 for ; Wed, 05 Aug 2026 04:14:14 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785928453; x=1786533253; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:dkim-signature:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=xUUzcIobmhtLoLj0b/LsrMCBLXsMLqFua2DUeD+nzr0=; b=TfyZKE/ZAZ4S7vQKi9GF45Dw3HglbukFxJdpY3N4Z19qL7D3tI9pl3fFb948b3K8gc v2rwfFUSNDJp+mFXtc5vpsBtzxD3ItQfBlLv9DldS1NkR95Dvn6jnlTl3PVp7g0iCJPv wya3pzD7wpWQYQ1AVKS97Lf+qEFWA3fi2cjbbP47XuEMHH7UzKBGw2eA7lNZW8z57KoC mGBi/n5+rsb4TQx1AWZinJlvR1pd/GzIYYfPivquLl+PBqauB+6fPxQIfh1XgqOd2eOH RCTlkJGxiz/J2+F5mffwI7y/EMwDVBpau86/T2y8jRghI0X3O06SiwIg9U++grOGGb4/ H5cA== X-Gm-Message-State: AOJu0YxV1k90ImssewKhwUaz1HFxsbw85RzKwgYrjBB8iwPd+nOSk+F+ 2SxQDHNjt2Nmqg8aTCVLKw94HvQm5aq6vUSsf5qP0RWoRUjcUMlVeopzo53rtQ/VMz2B4f0SPJ0 zTy9JGHEOZCGg5G0iUvxqyR0yBiWSK7NizK4n/ZIvzvaq0uXraq5buquGfk6jh85MsoPY6J98SZ f2eyD1vfazLmel8VxVNbOjIH+BAYzak2FSdYScu08zyKgZD0U7V5zmhuEXCMLXDUrgT70QZMD81 B45h8Rgw5kASr/T X-Gm-Gg: AR+sD12i3l3uK8zm5lW9o4/t5OaVstSnsd7WYL2CvOhyQIMPxWdm9CWkGL2Yl4BtE3m eh4iOh7zy/+/q3OSv/8zvknog6WrgvPVDQtxg4P2Z5VjSiAr11NN4FQy/Mc5FvUrQ8XI9hUYX+x Up92Gj3x2UcEY2nMfUZDRTCzaC0KzkcdH3kkIwjywewwVA3vQ0dVeaNNvXpYv++YoQOGun5wnGS com7SA2tClsROp4s+pyHxaP8ASUacQnJRreidwojDDtK4Vf3150J8WvJ3F8lO8LXRbOGzrOf4ij lXg7bWVZ92TE8wmbf5P9heAGDir5D8E7w6JmWiomOu4RtnodZoJhYlW9OjBpB1rEOVsi7Eoo6mD 9biFgomlUDuoQwBUMo+J+cn9hrwJjtsNSZvnekjvzCZyiP/AcUfIuSjlNXf6f4IRVIy0cVnNNVB SachoXsyiCQPigSR4CBFUjMXpJsoPoiROSQsA= X-Received: by 2002:a17:90b:528c:b0:380:9f17:6df3 with SMTP id 98e67ed59e1d1-3903c5448dcmr6435948a91.4.1785928453410; Wed, 05 Aug 2026 04:14:13 -0700 (PDT) Received: from smtp-us-east1-p01-i01-si01.dlp.protect.broadcom.com (address-144-49-247-22.dlp.protect.broadcom.com. [144.49.247.22]) by smtp-relay.gmail.com with ESMTPS id 98e67ed59e1d1-390392b0042sm784736a91.7.2026.08.05.04.14.12 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 05 Aug 2026 04:14:13 -0700 (PDT) X-Relaying-Domain: broadcom.com X-CFilter-Loop: Reflected Received: by mail-pg1-f197.google.com with SMTP id 41be03b00d2f7-cab048cdb3eso1255931a12.0 for ; Wed, 05 Aug 2026 04:14:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1785928452; x=1786533252; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=xUUzcIobmhtLoLj0b/LsrMCBLXsMLqFua2DUeD+nzr0=; b=Uxq3sSQ6PxUv1TIee66btPhXqiM/kaDVJCCCIUGK/CZXsF3aB9/9370JdUP7hHBTHA HPLc1xNGnKngoNK4oHJuT2JlyvJz1ry1IVsIMxqvR49F1wbRl1QqwK9p5U47X+0+JpfZ Le+k0ioHRrZKiuj7RNpseG/DMezfSTIZhyYw8= X-Received: by 2002:a05:6300:220a:b0:3c3:7cfe:b32a with SMTP id adf61e73a8af0-3cb85ea6fb0mr7645722637.27.1785928451589; Wed, 05 Aug 2026 04:14:11 -0700 (PDT) X-Received: by 2002:a05:6300:220a:b0:3c3:7cfe:b32a with SMTP id adf61e73a8af0-3cb85ea6fb0mr7645640637.27.1785928451003; Wed, 05 Aug 2026 04:14:11 -0700 (PDT) Received: from localhost.localdomain ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3158673b7f4sm16740227eec.17.2026.08.05.04.14.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Aug 2026 04:14:10 -0700 (PDT) From: Ranjan Kumar To: linux-scsi@vger.kernel.org, martin.petersen@oracle.com Cc: sathya.prakash@broadcom.com, chandrakanth.patil@broadcom.com, vishakhavc@google.com, ipylypiv@google.com, Ranjan Kumar , Sashiko Subject: [PATCH v4 01/10] mpi3mr: Skip device shutdown during unload per controller configuration Date: Wed, 5 Aug 2026 16:36:25 +0530 Message-ID: <20260805110634.346670-2-ranjan.kumar@broadcom.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260805110634.346670-1-ranjan.kumar@broadcom.com> References: <20260805110634.346670-1-ranjan.kumar@broadcom.com> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e The controller may be configured through Driver Page 1 to suppress device shutdown requests during driver unload. Cache this setting and skip the device shutdown request during IOC shutdown when unloading the driver. Additionally, ensure the driver_pg1 fields are properly converted from little-endian to CPU endianness using le32_to_cpu() and le16_to_cpu() before evaluating the shutdown disable flag and allocating diag buffers. This prevents failures and massive memory allocation errors on big-endian architectures. Also harden the diagnostic buffer allocation retry loops against invalid firmware-provided decrement sizes. The trace buffer loop already guarded against a zero or oversized decrement size (infinite loop or unsigned underflow). The firmware buffer loop had the same gap and now carries the same guard. Reported-by: Sashiko Closes: https://sashiko.dev/#/patchset/20260626114109.43685-1-ranjan.kumar@broadcom.com?part=1 Closes: https://sashiko.dev/#/patchset/20260708183305.244485-1-ranjan.kumar@broadcom.com?part=1 Closes: https://sashiko.dev/#/patchset/20260724102505.115136-1-ranjan.kumar@broadcom.com?part=1 Signed-off-by: Chandrakanth Patil Signed-off-by: Ranjan Kumar --- drivers/scsi/mpi3mr/mpi3mr.h | 3 +++ drivers/scsi/mpi3mr/mpi3mr_app.c | 44 ++++++++++++++++++++------------ drivers/scsi/mpi3mr/mpi3mr_fw.c | 35 ++++++++++++++++++------- drivers/scsi/mpi3mr/mpi3mr_os.c | 2 ++ 4 files changed, 58 insertions(+), 26 deletions(-) diff --git a/drivers/scsi/mpi3mr/mpi3mr.h b/drivers/scsi/mpi3mr/mpi3mr.h index c25525fe0671..39096004c60a 100644 --- a/drivers/scsi/mpi3mr/mpi3mr.h +++ b/drivers/scsi/mpi3mr/mpi3mr.h @@ -1410,6 +1410,9 @@ struct mpi3mr_ioc { struct dma_pool *trace_buf_pool; struct segments *trace_buf; u8 invalid_io_comp; + bool is_unload; + bool skip_dev_shutdown_on_unload; + }; diff --git a/drivers/scsi/mpi3mr/mpi3mr_app.c b/drivers/scsi/mpi3mr/mpi3mr_app.c index 1353a8ff9c85..fca5357a515d 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_app.c +++ b/drivers/scsi/mpi3mr/mpi3mr_app.c @@ -141,25 +141,27 @@ void mpi3mr_alloc_diag_bufs(struct mpi3mr_ioc *mrioc) trace_min_size = fw_min_size = MPI3MR_DEFAULT_HDB_MIN_SZ; } else { - trace_size = driver_pg1.host_diag_trace_max_size * 1024; - trace_dec_size = driver_pg1.host_diag_trace_decrement_size + trace_size = le16_to_cpu(driver_pg1.host_diag_trace_max_size) * 1024; + trace_dec_size = le16_to_cpu(driver_pg1.host_diag_trace_decrement_size) * 1024; - trace_min_size = driver_pg1.host_diag_trace_min_size * 1024; - fw_size = driver_pg1.host_diag_fw_max_size * 1024; - fw_dec_size = driver_pg1.host_diag_fw_decrement_size * 1024; - fw_min_size = driver_pg1.host_diag_fw_min_size * 1024; + trace_min_size = le16_to_cpu(driver_pg1.host_diag_trace_min_size) * 1024; + fw_size = le16_to_cpu(driver_pg1.host_diag_fw_max_size) * 1024; + fw_dec_size = le16_to_cpu(driver_pg1.host_diag_fw_decrement_size) * 1024; + fw_min_size = le16_to_cpu(driver_pg1.host_diag_fw_min_size) * 1024; dprint_init(mrioc, "%s:trace diag buffer sizes read from driver\n" "page1: maximum size = %dKB, decrement size = %dKB\n" - ", minimum size = %dKB\n", __func__, driver_pg1.host_diag_trace_max_size, - driver_pg1.host_diag_trace_decrement_size, - driver_pg1.host_diag_trace_min_size); + ", minimum size = %dKB\n", __func__, + le16_to_cpu(driver_pg1.host_diag_trace_max_size), + le16_to_cpu(driver_pg1.host_diag_trace_decrement_size), + le16_to_cpu(driver_pg1.host_diag_trace_min_size)); dprint_init(mrioc, "%s:firmware diag buffer sizes read from driver\n" "page1: maximum size = %dKB, decrement size = %dKB\n" - ", minimum size = %dKB\n", __func__, driver_pg1.host_diag_fw_max_size, - driver_pg1.host_diag_fw_decrement_size, - driver_pg1.host_diag_fw_min_size); + ", minimum size = %dKB\n", __func__, + le16_to_cpu(driver_pg1.host_diag_fw_max_size), + le16_to_cpu(driver_pg1.host_diag_fw_decrement_size), + le16_to_cpu(driver_pg1.host_diag_fw_min_size)); if ((trace_size == 0) && (fw_size == 0)) return; } @@ -179,6 +181,12 @@ void mpi3mr_alloc_diag_bufs(struct mpi3mr_ioc *mrioc) mpi3mr_alloc_trace_buffer(mrioc, trace_size)) { retry = true; + + if (!trace_dec_size || trace_dec_size > trace_size) { + retry = false; + goto retry_fw; + } + trace_size -= trace_dec_size; dprint_init(mrioc, "trace diag buffer allocation failed\n" "retrying smaller size %dKB\n", trace_size / 1024); @@ -211,11 +219,13 @@ void mpi3mr_alloc_diag_bufs(struct mpi3mr_ioc *mrioc) diag_buffer->size = fw_size; } else { retry = true; - fw_size -= fw_dec_size; - dprint_init(mrioc, "%s:trace diag buffer allocation failed,\n" - "retrying smaller size %dKB\n", - __func__, fw_size / 1024); - goto retry_fw; + if (fw_dec_size && fw_dec_size <= fw_size) { + fw_size -= fw_dec_size; + dprint_init(mrioc, "%s:trace diag buffer allocation failed,\n" + "retrying smaller size %dKB\n", + __func__, fw_size / 1024); + goto retry_fw; + } } } } diff --git a/drivers/scsi/mpi3mr/mpi3mr_fw.c b/drivers/scsi/mpi3mr/mpi3mr_fw.c index 31b19ed1528e..59241038f689 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_fw.c +++ b/drivers/scsi/mpi3mr/mpi3mr_fw.c @@ -4107,26 +4107,35 @@ static int mpi3mr_repost_diag_bufs(struct mpi3mr_ioc *mrioc) } /** - * mpi3mr_read_tsu_interval - Update time stamp interval + * mpi3mr_read_driver_page1 - Read Driver Page 1 parameters * @mrioc: Adapter instance reference * - * Update time stamp interval if its defined in driver page 1, - * otherwise use default value. + * Reads and caches Driver Page 1 parameters such as + * timestamp update interval and driver behavior flags. * * Return: Nothing */ static void -mpi3mr_read_tsu_interval(struct mpi3mr_ioc *mrioc) +mpi3mr_read_driver_page1(struct mpi3mr_ioc *mrioc) { struct mpi3_driver_page1 driver_pg1; u16 pg_sz = sizeof(driver_pg1); int retval = 0; mrioc->ts_update_interval = MPI3MR_TSUPDATE_INTERVAL; + mrioc->skip_dev_shutdown_on_unload = 0; retval = mpi3mr_cfg_get_driver_pg1(mrioc, &driver_pg1, pg_sz); - if (!retval && driver_pg1.time_stamp_update) + + if (retval) + return; + + if (driver_pg1.time_stamp_update) mrioc->ts_update_interval = (driver_pg1.time_stamp_update * 60); + + mrioc->skip_dev_shutdown_on_unload = + (le32_to_cpu(driver_pg1.flags) & + MPI3_DRIVER1_FLAGS_DEVICE_SHUTDOWN_ON_UNLOAD_DISABLE) ? 1 : 0; } /** @@ -4432,7 +4441,7 @@ int mpi3mr_init_ioc(struct mpi3mr_ioc *mrioc) goto out_failed_noretry; } - mpi3mr_read_tsu_interval(mrioc); + mpi3mr_read_driver_page1(mrioc); mpi3mr_print_ioc_info(mrioc); dprint_init(mrioc, "allocating host diag buffers\n"); @@ -4604,7 +4613,7 @@ int mpi3mr_reinit_ioc(struct mpi3mr_ioc *mrioc, u8 is_resume) goto out_failed_noretry; } - mpi3mr_read_tsu_interval(mrioc); + mpi3mr_read_driver_page1(mrioc); mpi3mr_print_ioc_info(mrioc); if (is_resume) { @@ -5089,8 +5098,16 @@ static void mpi3mr_issue_ioc_shutdown(struct mpi3mr_ioc *mrioc) return; } - shutdown_action = MPI3_SYSIF_IOC_CONFIG_SHUTDOWN_NORMAL | - MPI3_SYSIF_IOC_CONFIG_DEVICE_SHUTDOWN_SEND_REQ; + shutdown_action = MPI3_SYSIF_IOC_CONFIG_SHUTDOWN_NORMAL; + + if (!(mrioc->is_unload && mrioc->skip_dev_shutdown_on_unload)) + shutdown_action |= + MPI3_SYSIF_IOC_CONFIG_DEVICE_SHUTDOWN_SEND_REQ; + else + ioc_info(mrioc, + "The shutdown request is issued without the device shutdown bit set\n" + "as indicated by the controller configuration\n"); + ioc_config = readl(&mrioc->sysif_regs->ioc_configuration); ioc_config |= shutdown_action; diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c index 402d1f35d214..d2a20f2721db 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_os.c +++ b/drivers/scsi/mpi3mr/mpi3mr_os.c @@ -5665,6 +5665,8 @@ static void mpi3mr_remove(struct pci_dev *pdev) return; mrioc = shost_priv(shost); + mrioc->is_unload = true; + while (mrioc->reset_in_progress || mrioc->is_driver_loading) ssleep(1); -- 2.47.3