From patchwork Fri Nov 15 21:25:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Jiang X-Patchwork-Id: 13877300 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B0D691FB733 for ; Fri, 15 Nov 2024 21:28:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731706092; cv=none; b=pM2qIwI8ac4x3UYedaDIkIm6BWLMjktD+PkH7Rqq0NOMCHQIEf9W7lXRaeMmmpkYAe0DT81ZP3gI55c9aPxQSExgLEsm96iBRz0F222BRB0R7/zrO3LWHruPIA8um1hxQY0/pX+xLAvKKeir9dPp6RCV41KpF7EpsDowMy2LlGs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731706092; c=relaxed/simple; bh=Pg3M7VwAvmfMzigp9SmXmMFd+cztJ/wWo94uproU6Ig=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=dzeXPuKk2/K+1hak9IcVq8NeYqbfAet2OU6o9JC+laefgImlrRXJTwvypSWW2SXRZyuSz/JuBOV6IIJTlcplvt7UICRs2iusEXC6acc9Wn/6nwvzu6BuOEvf+EVAYB8QGkr8ghndzOyr/2CYX63iBcKWsUsRoW51sbPHu01Z5sA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 15C7DC4CECF; Fri, 15 Nov 2024 21:28:12 +0000 (UTC) From: Dave Jiang To: linux-cxl@vger.kernel.org Cc: dan.j.williams@intel.com, ira.weiny@intel.com, vishal.l.verma@intel.com, alison.schofield@intel.com, Jonathan.Cameron@huawei.com, dave@stgolabs.net, jgg@nvidia.com, shiju.jose@huawei.com Subject: [RFC PATCH v2 17/20] cxl/test: Add Get Feature support to cxl_test Date: Fri, 15 Nov 2024 14:25:50 -0700 Message-ID: <20241115212745.869552-18-dave.jiang@intel.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241115212745.869552-1-dave.jiang@intel.com> References: <20241115212745.869552-1-dave.jiang@intel.com> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add emulation of Get Feature command to cxl_test. The feature for device patrol scrub is returned by the emulation code. This is the only feature currently supported by cxl_test. It returns the information for the device patrol scrub feature. Signed-off-by: Dave Jiang --- tools/testing/cxl/test/mem.c | 63 ++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c index 9103bac054b9..547d7289d8df 100644 --- a/tools/testing/cxl/test/mem.c +++ b/tools/testing/cxl/test/mem.c @@ -48,6 +48,10 @@ static struct cxl_cel_entry mock_cel[] = { .opcode = cpu_to_le16(CXL_MBOX_OP_GET_SUPPORTED_FEATURES), .effect = CXL_CMD_EFFECT_NONE, }, + { + .opcode = cpu_to_le16(CXL_MBOX_OP_GET_FEATURE), + .effect = CXL_CMD_EFFECT_NONE, + }, { .opcode = cpu_to_le16(CXL_MBOX_OP_IDENTIFY), .effect = CXL_CMD_EFFECT_NONE, @@ -149,6 +153,10 @@ struct mock_event_store { u32 ev_status; }; +struct vendor_test_feat { + __le32 data; +} __packed; + struct cxl_mockmem_data { void *lsa; void *fw; @@ -165,6 +173,7 @@ struct cxl_mockmem_data { u8 event_buf[SZ_4K]; u64 timestamp; unsigned long sanitize_timeout; + struct vendor_test_feat test_feat; }; static struct mock_event_log *event_find_log(struct device *dev, int log_type) @@ -1357,6 +1366,51 @@ static void fill_feature_vendor_test(struct cxl_feat_entry *feat) feat->effects = cpu_to_le16(BIT(0) | BIT(9)); } +struct get_feat_input { + uuid_t uuid; + __le16 offset; + __le16 count; + u8 selection; +} __packed; + +static int mock_get_test_feature(struct cxl_mockmem_data *mdata, + struct cxl_mbox_cmd *cmd) +{ + struct vendor_test_feat *output = cmd->payload_out; + struct get_feat_input *input = cmd->payload_in; + u16 offset = le16_to_cpu(input->offset); + u16 count = le16_to_cpu(input->count); + u8 *ptr; + + if (offset > sizeof(*output)) { + cmd->return_code = CXL_MBOX_CMD_RC_INPUT; + return -EINVAL; + } + + if (offset + count > sizeof(*output)) { + cmd->return_code = CXL_MBOX_CMD_RC_INPUT; + return -EINVAL; + } + + ptr = (u8 *)&mdata->test_feat + offset; + memcpy((u8 *)output + offset, ptr, count); + + return 0; +} + +static int mock_get_feature(struct cxl_mockmem_data *mdata, + struct cxl_mbox_cmd *cmd) +{ + struct get_feat_input *input = cmd->payload_in; + + if (uuid_equal(&input->uuid, &CXL_VENDOR_FEATURE_TEST)) + return mock_get_test_feature(mdata, cmd); + + cmd->return_code = CXL_MBOX_CMD_RC_UNSUPPORTED; + + return -EOPNOTSUPP; +} + static int mock_get_supported_features(struct cxl_mockmem_data *mdata, struct cxl_mbox_cmd *cmd) { @@ -1487,6 +1541,9 @@ static int cxl_mock_mbox_send(struct cxl_mailbox *cxl_mbox, case CXL_MBOX_OP_GET_SUPPORTED_FEATURES: rc = mock_get_supported_features(mdata, cmd); break; + case CXL_MBOX_OP_GET_FEATURE: + rc = mock_get_feature(mdata, cmd); + break; default: break; } @@ -1534,6 +1591,11 @@ static int cxl_mock_mailbox_create(struct cxl_dev_state *cxlds) return 0; } +static void cxl_mock_test_feat_init(struct cxl_mockmem_data *mdata) +{ + mdata->test_feat.data = cpu_to_le32(0xdeadbeef); +} + static int cxl_mock_mem_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -1625,6 +1687,7 @@ static int cxl_mock_mem_probe(struct platform_device *pdev) return rc; cxl_mem_get_event_records(mds, CXLDEV_EVENT_STATUS_ALL); + cxl_mock_test_feat_init(mdata); return 0; }