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 X-Spam-Level: X-Spam-Status: No, score=-6.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 76800C4320A for ; Sat, 28 Aug 2021 23:02:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 563DE60EB0 for ; Sat, 28 Aug 2021 23:02:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232695AbhH1W7d (ORCPT ); Sat, 28 Aug 2021 18:59:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57974 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230074AbhH1W7c (ORCPT ); Sat, 28 Aug 2021 18:59:32 -0400 Received: from mail-qk1-x733.google.com (mail-qk1-x733.google.com [IPv6:2607:f8b0:4864:20::733]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3BC6AC061756 for ; Sat, 28 Aug 2021 15:58:41 -0700 (PDT) Received: by mail-qk1-x733.google.com with SMTP id y144so11429365qkb.6 for ; Sat, 28 Aug 2021 15:58:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=20fTmJiUuN5kvyLRahnULwSB+iTxV86SGxgK6jAdbEA=; b=iBl5uTIdrheUAuFQTa6EAb5WKMBRrWutZgb6nHPb4GVvgnD35gaE8OIDQXHHGriZV2 /IyBGENbGCdYJWCBbqqncUPqN4WFZ9Lf95TipiRlIfBENW43nGBmyHPjv3YnUFrPsAUP or5xl3tXLnJRQz7YgXegFJv5POKwnRwtjVX+0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=20fTmJiUuN5kvyLRahnULwSB+iTxV86SGxgK6jAdbEA=; b=QqGP6SwLM9uK65i/rAqvuByhzdtwxztxgNEpLxIHpYcJ8iVB0pSMMAs9Gj9X7zl0AA RjinYh7u66J/UELKn2fNh9hu0IXDskucBzE4KzW96r0fQ73F25ji6WzNBfnzsfpmbEIX 1iDdkSUhpbVYRgVdtCN0CsHdInPoNdn3ph3dw1Eacq6Fy0/sg0/Um0PqE3ADZNQahLEL 8D2NTNJFj3B6ZL8IU+9lGk71iMnFhrV3JxVU2D7NAffX9cLZwuXwbUwB38YYVSq9iRKy Egzw9kwHY9H9zopGucSybs0QnGRcROlNOt1MVm8ln0netXgE0HxE4DaY1ZmWcGOGFfHM Cm1g== X-Gm-Message-State: AOAM532T7hRFejUoFlWJXUvEB/vReekIWKCC0zmmSy5rsPnwTpYpD2t0 qYTtVMjxEzfVILT8P6mFZOWtLa31+gKNnXPm5uOzyZHdSUk= X-Google-Smtp-Source: ABdhPJy0t9eOX9TXZUTRcLYBfRY6WYYBjFu5B9K5zsSCRgE09AWU8Mw8FHaFiXCbaZIXoorHSNUMT6WkdKsEBi1m0BM= X-Received: by 2002:a05:620a:bcc:: with SMTP id s12mr15760070qki.431.1630191520013; Sat, 28 Aug 2021 15:58:40 -0700 (PDT) MIME-Version: 1.0 References: <1630187910-22252-1-git-send-email-michael.chan@broadcom.com> In-Reply-To: From: Michael Chan Date: Sat, 28 Aug 2021 15:58:29 -0700 Message-ID: Subject: Re: [PATCH net-next 00/11] bnxt_en: Implement new driver APIs to send FW messages To: Andrew Lunn Cc: David Miller , Netdev , Jakub Kicinski , Edwin Peer , Andrew Gospodarek Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="0000000000007e2b6605caa68aec" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org --0000000000007e2b6605caa68aec Content-Type: text/plain; charset="UTF-8" On Sat, Aug 28, 2021 at 3:07 PM Andrew Lunn wrote: > > On Sat, Aug 28, 2021 at 05:58:19PM -0400, Michael Chan wrote: > > The current driver APIs to send messages to the firmware allow only one > > outstanding message in flight. There is only one buffer for the firmware > > response for each firmware channel. To send a firmware message, all > > callers must take a mutex and it is released after the firmware response > > has been read. This scheme does not allow multiple firmware messages > > in flight. Firmware may take a long time to respond to some messages > > (e.g. NVRAM related ones) and this causes the mutex to be held for > > a long time, blocking other callers. > > > > This patchset intoduces the new driver APIs to address the above > > shortcomings. All callers are then updated to use the new APIs. > > Hi Michael > > Does the firmware already support this? Or is a firmware upgrade also > required. > These changes are compatible with new and old firmware. With newer firmware, the code introduced in patch 11 will take advantage of the deferred firmware responses for commands that take longer to complete. The APIs will then allow another command to be sent to the firmware. 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