From patchwork Fri Mar 7 20:55:36 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Jiang X-Patchwork-Id: 14007139 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 7E055257449 for ; Fri, 7 Mar 2025 20:57:00 +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=1741381020; cv=none; b=mVQvyp1JDorY0MQVBKkVLbGdGshMi1YafvP1Zx4tuX0T1i37Yrh8rsH4vsR6V6iK0E7g8V4GBVeZVwlm/Xrc1PI5f5OTg94zNqQ8Q7azUmeQtxxkmuUh9Gumq3EnJHirXHl33AlRaEzfpdMd6zFU/X948wA2+mp2flVJoWZa8kc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741381020; c=relaxed/simple; bh=4VWrDW5zca75TVE5+3OPaGR1EKI5gVYQqbQDyApEeaI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IEqXib0zzP1Pmu/hDr6XyNK5Hu8ULBjkT+JOOvHcQNf7fcnLrTOsK+2CvTpaxYchxHFL42tu/w0jUc3qJtTGQXPkoseyIhrc3M06SRuNWiscBJ67iBRARqOQkDCQztxszIOW3fQGh9eSldosorHuYA1/fL5jWl1pcZcMdWvjkDU= 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 2F454C4CED1; Fri, 7 Mar 2025 20:57:00 +0000 (UTC) From: Dave Jiang To: linux-cxl@vger.kernel.org Cc: jgg@nvidia.com, saeedm@nvidia.com, jonathan.cameron@huawei.com, Jonathan Cameron , Dan Williams , Li Ming Subject: [PATCH v8 6/9] cxl/test: Add Get Feature support to cxl_test Date: Fri, 7 Mar 2025 13:55:36 -0700 Message-ID: <20250307205648.1021626-7-dave.jiang@intel.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250307205648.1021626-1-dave.jiang@intel.com> References: <20250307205648.1021626-1-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. Link: https://patch.msgid.link/r/20250220194438.2281088-13-dave.jiang@intel.com Reviewed-by: Jonathan Cameron Reviewed-by: Dan Williams Reviewed-by: Li Ming Signed-off-by: Dave Jiang Signed-off-by: Jason Gunthorpe --- tools/testing/cxl/test/mem.c | 56 ++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) diff --git a/tools/testing/cxl/test/mem.c b/tools/testing/cxl/test/mem.c index 848db399102c..af70932c9bb0 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) @@ -1379,6 +1388,44 @@ static void fill_feature_vendor_test(struct cxl_feat_entry *feat) #define MAX_CXL_TEST_FEATS 1 +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 cxl_mbox_get_feat_in *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 cxl_mbox_get_feat_in *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) { @@ -1509,6 +1556,9 @@ 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; } @@ -1556,6 +1606,11 @@ 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; @@ -1651,6 +1706,7 @@ static int cxl_mock_mem_probe(struct platform_device *pdev) dev_dbg(dev, "No CXL FWCTL setup\n"); cxl_mem_get_event_records(mds, CXLDEV_EVENT_STATUS_ALL); + cxl_mock_test_feat_init(mdata); return 0; }