From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id F32E8A057B; Thu, 2 Apr 2020 14:55:53 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id D4EC21B91B; Thu, 2 Apr 2020 14:55:53 +0200 (CEST) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by dpdk.org (Postfix) with ESMTP id 042EB2BAF for ; Thu, 2 Apr 2020 14:55:51 +0200 (CEST) IronPort-SDR: jO/RAWVmFl+zV0IOi7GpTYdcxjTZcm8folseAihBYwM5ludPFJXVQapkP1TqmtWhezT2WtG2GR 1baixI4/yq2w== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Apr 2020 05:55:50 -0700 IronPort-SDR: VgBmVj+pDPapLZ+P5DAADcAhk0at48GvuWHufiO2nR2QEQivg7D/mAMv7Lep3vDVtksvvLxW0n LVWx07nIt8Dw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,335,1580803200"; d="scan'208";a="273550266" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.252.4.50]) ([10.252.4.50]) by fmsmga004.fm.intel.com with ESMTP; 02 Apr 2020 05:55:48 -0700 To: Michal Krawczyk , dev@dpdk.org Cc: mw@semihalf.com, mba@semihalf.com, gtzalik@amazon.com, evgenys@amazon.com, igorch@amazon.com References: <20200401142127.13715-1-mk@semihalf.com> <20200401142127.13715-12-mk@semihalf.com> From: Ferruh Yigit Autocrypt: addr=ferruh.yigit@intel.com; prefer-encrypt=mutual; keydata= mQINBFXZCFABEADCujshBOAaqPZpwShdkzkyGpJ15lmxiSr3jVMqOtQS/sB3FYLT0/d3+bvy qbL9YnlbPyRvZfnP3pXiKwkRoR1RJwEo2BOf6hxdzTmLRtGtwWzI9MwrUPj6n/ldiD58VAGQ +iR1I/z9UBUN/ZMksElA2D7Jgg7vZ78iKwNnd+vLBD6I61kVrZ45Vjo3r+pPOByUBXOUlxp9 GWEKKIrJ4eogqkVNSixN16VYK7xR+5OUkBYUO+sE6etSxCr7BahMPKxH+XPlZZjKrxciaWQb +dElz3Ab4Opl+ZT/bK2huX+W+NJBEBVzjTkhjSTjcyRdxvS1gwWRuXqAml/sh+KQjPV1PPHF YK5LcqLkle+OKTCa82OvUb7cr+ALxATIZXQkgmn+zFT8UzSS3aiBBohg3BtbTIWy51jNlYdy ezUZ4UxKSsFuUTPt+JjHQBvF7WKbmNGS3fCid5Iag4tWOfZoqiCNzxApkVugltxoc6rG2TyX CmI2rP0mQ0GOsGXA3+3c1MCdQFzdIn/5tLBZyKy4F54UFo35eOX8/g7OaE+xrgY/4bZjpxC1 1pd66AAtKb3aNXpHvIfkVV6NYloo52H+FUE5ZDPNCGD0/btFGPWmWRmkPybzColTy7fmPaGz cBcEEqHK4T0aY4UJmE7Ylvg255Kz7s6wGZe6IR3N0cKNv++O7QARAQABtCVGZXJydWggWWln aXQgPGZlcnJ1aC55aWdpdEBpbnRlbC5jb20+iQJUBBMBCgA+AhsDAh4BAheABQsJCAcDBRUK CQgLBRYCAwEAFiEE0jZTh0IuwoTjmYHH+TPrQ98TYR8FAl1meboFCQlupOoACgkQ+TPrQ98T YR9ACBAAv2tomhyxY0Tp9Up7mNGLfEdBu/7joB/vIdqMRv63ojkwr9orQq5V16V/25+JEAD0 60cKodBDM6HdUvqLHatS8fooWRueSXHKYwJ3vxyB2tWDyZrLzLI1jxEvunGodoIzUOtum0Ce gPynnfQCelXBja0BwLXJMplM6TY1wXX22ap0ZViC0m714U5U4LQpzjabtFtjT8qOUR6L7hfy YQ72PBuktGb00UR/N5UrR6GqB0x4W41aZBHXfUQnvWIMmmCrRUJX36hOTYBzh+x86ULgg7H2 1499tA4o6rvE13FiGccplBNWCAIroAe/G11rdoN5NBgYVXu++38gTa/MBmIt6zRi6ch15oLA Ln2vHOdqhrgDuxjhMpG2bpNE36DG/V9WWyWdIRlz3NYPCDM/S3anbHlhjStXHOz1uHOnerXM 1jEjcsvmj1vSyYoQMyRcRJmBZLrekvgZeh7nJzbPHxtth8M7AoqiZ/o/BpYU+0xZ+J5/szWZ aYxxmIRu5ejFf+Wn9s5eXNHmyqxBidpCWvcbKYDBnkw2+Y9E5YTpL0mS0dCCOlrO7gca27ux ybtbj84aaW1g0CfIlUnOtHgMCmz6zPXThb+A8H8j3O6qmPoVqT3qnq3Uhy6GOoH8Fdu2Vchh TWiF5yo+pvUagQP6LpslffufSnu+RKAagkj7/RSuZV25Ag0EV9ZMvgEQAKc0Db17xNqtSwEv mfp4tkddwW9XA0tWWKtY4KUdd/jijYqc3fDD54ESYpV8QWj0xK4YM0dLxnDU2IYxjEshSB1T qAatVWz9WtBYvzalsyTqMKP3w34FciuL7orXP4AibPtrHuIXWQOBECcVZTTOdZYGAzaYzxiA ONzF9eTiwIqe9/oaOjTwTLnOarHt16QApTYQSnxDUQljeNvKYt1lZE/gAUUxNLWsYyTT+22/ vU0GDUahsJxs1+f1yEr+OGrFiEAmqrzpF0lCS3f/3HVTU6rS9cK3glVUeaTF4+1SK5ZNO35p iVQCwphmxa+dwTG/DvvHYCtgOZorTJ+OHfvCnSVjsM4kcXGjJPy3JZmUtyL9UxEbYlrffGPQ I3gLXIGD5AN5XdAXFCjjaID/KR1c9RHd7Oaw0Pdcq9UtMLgM1vdX8RlDuMGPrj5sQrRVbgYH fVU/TQCk1C9KhzOwg4Ap2T3tE1umY/DqrXQgsgH71PXFucVjOyHMYXXugLT8YQ0gcBPHy9mZ qw5mgOI5lCl6d4uCcUT0l/OEtPG/rA1lxz8ctdFBVOQOxCvwRG2QCgcJ/UTn5vlivul+cThi 6ERPvjqjblLncQtRg8izj2qgmwQkvfj+h7Ex88bI8iWtu5+I3K3LmNz/UxHBSWEmUnkg4fJl Rr7oItHsZ0ia6wWQ8lQnABEBAAGJAjwEGAEKACYCGwwWIQTSNlOHQi7ChOOZgcf5M+tD3xNh HwUCXWZ5wAUJB3FgggAKCRD5M+tD3xNhH2O+D/9OEz62YuJQLuIuOfL67eFTIB5/1+0j8Tsu o2psca1PUQ61SZJZOMl6VwNxpdvEaolVdrpnSxUF31kPEvR0Igy8HysQ11pj8AcgH0a9FrvU /8k2Roccd2ZIdpNLkirGFZR7LtRw41Kt1Jg+lafI0efkiHKMT/6D/P1EUp1RxOBNtWGV2hrd 0Yg9ds+VMphHHU69fDH02SwgpvXwG8Qm14Zi5WQ66R4CtTkHuYtA63sS17vMl8fDuTCtvfPF HzvdJLIhDYN3Mm1oMjKLlq4PUdYh68Fiwm+boJoBUFGuregJFlO3hM7uHBDhSEnXQr5mqpPM 6R/7Q5BjAxrwVBisH0yQGjsWlnysRWNfExAE2sRePSl0or9q19ddkRYltl6X4FDUXy2DTXa9 a+Fw4e1EvmcF3PjmTYs9IE3Vc64CRQXkhujcN4ZZh5lvOpU8WgyDxFq7bavFnSS6kx7Tk29/ wNJBp+cf9qsQxLbqhW5kfORuZGecus0TLcmpZEFKKjTJBK9gELRBB/zoN3j41hlEl7uTUXTI JQFLhpsFlEdKLujyvT/aCwP3XWT+B2uZDKrMAElF6ltpTxI53JYi22WO7NH7MR16Fhi4R6vh FHNBOkiAhUpoXRZXaCR6+X4qwA8CwHGqHRBfYFSU/Ulq1ZLR+S3hNj2mbnSx0lBs1eEqe2vh cA== Message-ID: <0c4c2200-d78f-0af0-2496-747f8629188b@intel.com> Date: Thu, 2 Apr 2020 13:55:47 +0100 MIME-Version: 1.0 In-Reply-To: <20200401142127.13715-12-mk@semihalf.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH v2 11/29] net/ena/base: use 48-bit memory addresses in ena_com X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 4/1/2020 3:21 PM, Michal Krawczyk wrote: > ENA device is using 48-bit memory for IO. because of that, the upper > limit had to be updated. What is the impact of this change, and what is the reason of the change? Can you please explain in the commit log? > > Signed-off-by: Michal Krawczyk > Reviewed-by: Igor Chauskin > Reviewed-by: Guy Tzalik > --- > drivers/net/ena/base/ena_com.c | 2 +- > drivers/net/ena/base/ena_defs/ena_common_defs.h | 6 +++++- > 2 files changed, 6 insertions(+), 2 deletions(-) > > diff --git a/drivers/net/ena/base/ena_com.c b/drivers/net/ena/base/ena_com.c > index 7c1d0aef20..b7749209b3 100644 > --- a/drivers/net/ena/base/ena_com.c > +++ b/drivers/net/ena/base/ena_com.c > @@ -73,7 +73,7 @@ static int ena_com_mem_addr_set(struct ena_com_dev *ena_dev, > } > > ena_addr->mem_addr_low = lower_32_bits(addr); > - ena_addr->mem_addr_high = upper_32_bits(addr); > + ena_addr->mem_addr_high = (u16)upper_32_bits(addr); > > return 0; > } > diff --git a/drivers/net/ena/base/ena_defs/ena_common_defs.h b/drivers/net/ena/base/ena_defs/ena_common_defs.h > index 1818c29a87..349474d265 100644 > --- a/drivers/net/ena/base/ena_defs/ena_common_defs.h > +++ b/drivers/net/ena/base/ena_defs/ena_common_defs.h > @@ -9,10 +9,14 @@ > #define ENA_COMMON_SPEC_VERSION_MAJOR 2 > #define ENA_COMMON_SPEC_VERSION_MINOR 0 > > +/* ENA operates with 48-bit memory addresses. ena_mem_addr_t */ > struct ena_common_mem_addr { > uint32_t mem_addr_low; > > - uint32_t mem_addr_high; > + uint16_t mem_addr_high; > + > + /* MBZ */ > + uint16_t reserved16; > }; > > #endif /* _ENA_COMMON_H_ */ >