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GET /api/patches/36818/?format=api
{ "id": 36818, "url": "https://patches.dpdk.org/api/patches/36818/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/patch/1522561624-15817-3-git-send-email-rasesh.mody@cavium.com/", "project": { "id": 1, "url": "https://patches.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<1522561624-15817-3-git-send-email-rasesh.mody@cavium.com>", "list_archive_url": "https://inbox.dpdk.org/dev/1522561624-15817-3-git-send-email-rasesh.mody@cavium.com", "date": "2018-04-01T05:46:52", "name": "[dpdk-dev,02/14] net/qede/base: protect DMAE transactions", "commit_ref": null, "pull_url": null, "state": "changes-requested", "archived": true, "hash": "0d5c8c2940bc2c5e247243362c737231d8f918ff", "submitter": { "id": 569, "url": "https://patches.dpdk.org/api/people/569/?format=api", "name": "Mody, Rasesh", "email": "rasesh.mody@cavium.com" }, "delegate": { "id": 319, "url": "https://patches.dpdk.org/api/users/319/?format=api", "username": "fyigit", "first_name": "Ferruh", "last_name": "Yigit", "email": "ferruh.yigit@amd.com" }, "mbox": "https://patches.dpdk.org/project/dpdk/patch/1522561624-15817-3-git-send-email-rasesh.mody@cavium.com/mbox/", "series": [], "comments": "https://patches.dpdk.org/api/patches/36818/comments/", "check": "fail", "checks": "https://patches.dpdk.org/api/patches/36818/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@dpdk.org", "Delivered-To": "patchwork@dpdk.org", "Received": [ "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id D21B65B32;\n\tSun, 1 Apr 2018 07:47:51 +0200 (CEST)", "from NAM03-DM3-obe.outbound.protection.outlook.com\n\t(mail-dm3nam03on0073.outbound.protection.outlook.com [104.47.41.73])\n\tby dpdk.org (Postfix) with ESMTP id B23FA4F93\n\tfor <dev@dpdk.org>; Sun, 1 Apr 2018 07:47:49 +0200 (CEST)", "from cavium.com (198.186.0.2) by\n\tDM5PR0701MB3670.namprd07.prod.outlook.com (2603:10b6:4:7e::18) with\n\tMicrosoft SMTP Server (version=TLS1_2,\n\tcipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256) id 15.20.631.10;\n\tSun, 1 Apr 2018 05:47:48 +0000" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=CAVIUMNETWORKS.onmicrosoft.com; s=selector1-cavium-com;\n\th=From:Date:Subject:Message-ID:Content-Type:MIME-Version;\n\tbh=OLpInxT4QRZLslVdR+gRIAsk40ykGkZNBU2YDYl3faQ=;\n\tb=OJ4qdz5XuJdnItEu0U4VAOpA5N3IhggJvKjWrEU+46gv0FGWCtVtwWSMS8/d1VB0eKcAusvlaWIKfYmbaB/mU5PhA2dq9Fy1WxlTSeXRcPsGWW5hW8fKFwwop1f31ptGMbx4P9nCmSf4BaU838zkUkD3GvZrVMjNUTz8g2r3eZA=", "Authentication-Results": "spf=none (sender IP is )\n\tsmtp.mailfrom=Rasesh.Mody@cavium.com; ", "From": "Rasesh Mody <rasesh.mody@cavium.com>", "To": "dev@dpdk.org", "Cc": "Rasesh Mody <rasesh.mody@cavium.com>, ferruh.yigit@intel.com,\n\tDept-EngDPDKDev@cavium.com", "Date": "Sat, 31 Mar 2018 22:46:52 -0700", "Message-Id": "<1522561624-15817-3-git-send-email-rasesh.mody@cavium.com>", "X-Mailer": "git-send-email 1.7.10.3", "In-Reply-To": "<1522561624-15817-1-git-send-email-rasesh.mody@cavium.com>", "References": "<1522561624-15817-1-git-send-email-rasesh.mody@cavium.com>", "MIME-Version": "1.0", "Content-Type": "text/plain", "X-Originating-IP": "[198.186.0.2]", "X-ClientProxiedBy": "BN6PR11CA0017.namprd11.prod.outlook.com\n\t(2603:10b6:405:2::27) To DM5PR0701MB3670.namprd07.prod.outlook.com\n\t(2603:10b6:4:7e::18)", "X-MS-PublicTrafficType": "Email", "X-MS-Office365-Filtering-Correlation-Id": "ad6513c2-01e3-4cee-4b39-08d5979419e1", "X-Microsoft-Antispam": "UriScan:; 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PCL:0;\n\tRULEID:(8211001083)(6040522)(2401047)(8121501046)(5005006)(3231221)(944501327)(52105095)(93006095)(93001095)(3002001)(10201501046)(6041310)(20161123562045)(20161123558120)(20161123564045)(20161123560045)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(6072148)(201708071742011);\n\tSRVR:DM5PR0701MB3670; BCL:0; PCL:0; RULEID:; SRVR:DM5PR0701MB3670; ", "X-Forefront-PRVS": "06290ECA9D", "X-Forefront-Antispam-Report": "SFV:NSPM;\n\tSFS:(10009020)(39850400004)(376002)(346002)(366004)(396003)(39380400002)(189003)(199004)(25786009)(16526019)(52116002)(81166006)(81156014)(76176011)(8676002)(7696005)(478600001)(72206003)(51416003)(305945005)(26005)(386003)(7736002)(186003)(2361001)(59450400001)(86362001)(47776003)(69596002)(2906002)(66066001)(4326008)(68736007)(2351001)(55016002)(97736004)(21086003)(551934003)(50226002)(6666003)(107886003)(4720700003)(36756003)(8936002)(16586007)(316002)(52396003)(6116002)(106356001)(11346002)(53936002)(105586002)(5660300001)(6916009)(3846002)(486005)(446003)(476003)(48376002)(50466002)(486005)(956004)(2616005);\n\tDIR:OUT; SFP:1101; SCL:1; SRVR:DM5PR0701MB3670; H:cavium.com; FPR:;\n\tSPF:None; \n\tLANG:en; PTR:InfoNoRecords; MX:1; A:1; ", "Received-SPF": "None (protection.outlook.com: cavium.com does not designate\n\tpermitted sender hosts)", "X-Microsoft-Antispam-Message-Info": "Co7O79gnXGCA5G7kDyS7y+EXxskNAGsn6x8AftwLdTAieoTabT2kNsATq8r/fU1uylI8EMsoPUQsLYIAMIN5ePWtIOUQnDqOwAhcqOMiHMYYeJ7qxiloi5eb9s+5j6L6JtgGhq1rukwv1JO4oTNGR7DiFMSSVvuLkc4I5+imy+I3IF/B7v2THP2P+XNDglte", "SpamDiagnosticOutput": "1:99", "SpamDiagnosticMetadata": "NSPM", "X-OriginatorOrg": "cavium.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "01 Apr 2018 05:47:48.1536\n\t(UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "ad6513c2-01e3-4cee-4b39-08d5979419e1", "X-MS-Exchange-CrossTenant-FromEntityHeader": "Hosted", "X-MS-Exchange-CrossTenant-Id": "711e4ccf-2e9b-4bcf-a551-4094005b6194", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "DM5PR0701MB3670", "Subject": "[dpdk-dev] [PATCH 02/14] net/qede/base: protect DMAE transactions", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.15", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<https://dpdk.org/ml/options/dev>,\n\t<mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://dpdk.org/ml/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<https://dpdk.org/ml/listinfo/dev>,\n\t<mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "content": "Protect DMAE transactions with a spinlock instead of a mutex\n\nSigned-off-by: Rasesh Mody <rasesh.mody@cavium.com>\n---\n drivers/net/qede/base/ecore.h | 6 ++++--\n drivers/net/qede/base/ecore_dev.c | 6 +++---\n drivers/net/qede/base/ecore_hw.c | 30 +++++++++++++++++++-----------\n 3 files changed, 26 insertions(+), 16 deletions(-)", "diff": "diff --git a/drivers/net/qede/base/ecore.h b/drivers/net/qede/base/ecore.h\nindex ce5f3a9..7c642af 100644\n--- a/drivers/net/qede/base/ecore.h\n+++ b/drivers/net/qede/base/ecore.h\n@@ -432,8 +432,10 @@ struct ecore_hw_info {\n #define DMAE_MAX_RW_SIZE\t0x2000\n \n struct ecore_dmae_info {\n-\t/* Mutex for synchronizing access to functions */\n-\tosal_mutex_t\tmutex;\n+\t/* Spinlock for synchronizing access to functions */\n+\tosal_spinlock_t lock;\n+\n+\tbool b_mem_ready;\n \n \tu8 channel;\n \ndiff --git a/drivers/net/qede/base/ecore_dev.c b/drivers/net/qede/base/ecore_dev.c\nindex cd274c3..b15af03 100644\n--- a/drivers/net/qede/base/ecore_dev.c\n+++ b/drivers/net/qede/base/ecore_dev.c\n@@ -423,9 +423,9 @@ void ecore_init_struct(struct ecore_dev *p_dev)\n \t\tp_hwfn->b_active = false;\n \n #ifdef CONFIG_ECORE_LOCK_ALLOC\n-\t\tOSAL_MUTEX_ALLOC(p_hwfn, &p_hwfn->dmae_info.mutex);\n+\t\tOSAL_SPIN_LOCK_ALLOC(p_hwfn, &p_hwfn->dmae_info.lock);\n #endif\n-\t\tOSAL_MUTEX_INIT(&p_hwfn->dmae_info.mutex);\n+\t\tOSAL_SPIN_LOCK_INIT(&p_hwfn->dmae_info.lock);\n \t}\n \n \t/* hwfn 0 is always active */\n@@ -4238,7 +4238,7 @@ void ecore_hw_remove(struct ecore_dev *p_dev)\n \t\tecore_mcp_free(p_hwfn);\n \n #ifdef CONFIG_ECORE_LOCK_ALLOC\n-\t\tOSAL_MUTEX_DEALLOC(&p_hwfn->dmae_info.mutex);\n+\t\tOSAL_SPIN_LOCK_DEALLOC(&p_hwfn->dmae_info.lock);\n #endif\n \t}\n \ndiff --git a/drivers/net/qede/base/ecore_hw.c b/drivers/net/qede/base/ecore_hw.c\nindex 84f273b..34e2e5f 100644\n--- a/drivers/net/qede/base/ecore_hw.c\n+++ b/drivers/net/qede/base/ecore_hw.c\n@@ -592,7 +592,8 @@ enum _ecore_status_t ecore_dmae_info_alloc(struct ecore_hwfn *p_hwfn)\n \t\tgoto err;\n \t}\n \n-\tp_hwfn->dmae_info.channel = p_hwfn->rel_pf_id;\n+\t\tp_hwfn->dmae_info.channel = p_hwfn->rel_pf_id;\n+\t\tp_hwfn->dmae_info.b_mem_ready = true;\n \n \treturn ECORE_SUCCESS;\n err:\n@@ -604,8 +605,9 @@ void ecore_dmae_info_free(struct ecore_hwfn *p_hwfn)\n {\n \tdma_addr_t p_phys;\n \n-\t/* Just make sure no one is in the middle */\n-\tOSAL_MUTEX_ACQUIRE(&p_hwfn->dmae_info.mutex);\n+\tOSAL_SPIN_LOCK(&p_hwfn->dmae_info.lock);\n+\tp_hwfn->dmae_info.b_mem_ready = false;\n+\tOSAL_SPIN_UNLOCK(&p_hwfn->dmae_info.lock);\n \n \tif (p_hwfn->dmae_info.p_completion_word != OSAL_NULL) {\n \t\tp_phys = p_hwfn->dmae_info.completion_word_phys_addr;\n@@ -630,8 +632,6 @@ void ecore_dmae_info_free(struct ecore_hwfn *p_hwfn)\n \t\t\t\t p_phys, sizeof(u32) * DMAE_MAX_RW_SIZE);\n \t\tp_hwfn->dmae_info.p_intermediate_buffer = OSAL_NULL;\n \t}\n-\n-\tOSAL_MUTEX_RELEASE(&p_hwfn->dmae_info.mutex);\n }\n \n static enum _ecore_status_t ecore_dmae_operation_wait(struct ecore_hwfn *p_hwfn)\n@@ -777,6 +777,14 @@ static enum _ecore_status_t ecore_dmae_operation_wait(struct ecore_hwfn *p_hwfn)\n \tenum _ecore_status_t ecore_status = ECORE_SUCCESS;\n \tu32 offset = 0;\n \n+\tif (!p_hwfn->dmae_info.b_mem_ready) {\n+\t\tDP_VERBOSE(p_hwfn, ECORE_MSG_HW,\n+\t\t\t \"No buffers allocated. Avoid DMAE transaction [{src: addr 0x%lx, type %d}, {dst: addr 0x%lx, type %d}, size %d].\\n\",\n+\t\t\t src_addr, src_type, dst_addr, dst_type,\n+\t\t\t size_in_dwords);\n+\t\treturn ECORE_NOMEM;\n+\t}\n+\n \tif (p_hwfn->p_dev->recov_in_prog) {\n \t\tDP_VERBOSE(p_hwfn, ECORE_MSG_HW,\n \t\t\t \"Recovery is in progress. Avoid DMAE transaction [{src: addr 0x%lx, type %d}, {dst: addr 0x%lx, type %d}, size %d].\\n\",\n@@ -870,7 +878,7 @@ enum _ecore_status_t\n \tOSAL_MEMSET(¶ms, 0, sizeof(struct ecore_dmae_params));\n \tparams.flags = flags;\n \n-\tOSAL_MUTEX_ACQUIRE(&p_hwfn->dmae_info.mutex);\n+\tOSAL_SPIN_LOCK(&p_hwfn->dmae_info.lock);\n \n \trc = ecore_dmae_execute_command(p_hwfn, p_ptt, source_addr,\n \t\t\t\t\tgrc_addr_in_dw,\n@@ -878,7 +886,7 @@ enum _ecore_status_t\n \t\t\t\t\tECORE_DMAE_ADDRESS_GRC,\n \t\t\t\t\tsize_in_dwords, ¶ms);\n \n-\tOSAL_MUTEX_RELEASE(&p_hwfn->dmae_info.mutex);\n+\tOSAL_SPIN_UNLOCK(&p_hwfn->dmae_info.lock);\n \n \treturn rc;\n }\n@@ -896,14 +904,14 @@ enum _ecore_status_t\n \tOSAL_MEMSET(¶ms, 0, sizeof(struct ecore_dmae_params));\n \tparams.flags = flags;\n \n-\tOSAL_MUTEX_ACQUIRE(&p_hwfn->dmae_info.mutex);\n+\tOSAL_SPIN_LOCK(&p_hwfn->dmae_info.lock);\n \n \trc = ecore_dmae_execute_command(p_hwfn, p_ptt, grc_addr_in_dw,\n \t\t\t\t\tdest_addr, ECORE_DMAE_ADDRESS_GRC,\n \t\t\t\t\tECORE_DMAE_ADDRESS_HOST_VIRT,\n \t\t\t\t\tsize_in_dwords, ¶ms);\n \n-\tOSAL_MUTEX_RELEASE(&p_hwfn->dmae_info.mutex);\n+\tOSAL_SPIN_UNLOCK(&p_hwfn->dmae_info.lock);\n \n \treturn rc;\n }\n@@ -917,7 +925,7 @@ enum _ecore_status_t\n {\n \tenum _ecore_status_t rc;\n \n-\tOSAL_MUTEX_ACQUIRE(&p_hwfn->dmae_info.mutex);\n+\tOSAL_SPIN_LOCK(&p_hwfn->dmae_info.lock);\n \n \trc = ecore_dmae_execute_command(p_hwfn, p_ptt, source_addr,\n \t\t\t\t\tdest_addr,\n@@ -925,7 +933,7 @@ enum _ecore_status_t\n \t\t\t\t\tECORE_DMAE_ADDRESS_HOST_PHYS,\n \t\t\t\t\tsize_in_dwords, p_params);\n \n-\tOSAL_MUTEX_RELEASE(&p_hwfn->dmae_info.mutex);\n+\tOSAL_SPIN_UNLOCK(&p_hwfn->dmae_info.lock);\n \n \treturn rc;\n }\n", "prefixes": [ "dpdk-dev", "02/14" ] }