From patchwork Thu Nov 11 20:44:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Verma, Vishal L" X-Patchwork-Id: 12615627 Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) (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 BAE0C2C9E for ; Thu, 11 Nov 2021 20:44:58 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10165"; a="233253833" X-IronPort-AV: E=Sophos;i="5.87,226,1631602800"; d="scan'208";a="233253833" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Nov 2021 12:44:55 -0800 X-IronPort-AV: E=Sophos;i="5.87,226,1631602800"; d="scan'208";a="504579073" Received: from dmamols-mobl1.amr.corp.intel.com (HELO vverma7-desk.amr.corp.intel.com) ([10.255.92.53]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Nov 2021 12:44:54 -0800 From: Vishal Verma To: Cc: Dan Williams , Ben Widawsky , , Vishal Verma Subject: [ndctl PATCH v5 08/16] libcxl: add support for the 'GET_LSA' command Date: Thu, 11 Nov 2021 13:44:28 -0700 Message-Id: <20211111204436.1560365-9-vishal.l.verma@intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20211111204436.1560365-1-vishal.l.verma@intel.com> References: <20211111204436.1560365-1-vishal.l.verma@intel.com> Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=3271; h=from:subject; bh=KL+mZb/zTiKx0Spl2aV2/6zZdLHYRRCkqbfwDH+X9po=; b=owGbwMvMwCHGf25diOft7jLG02pJDIm9DZumeC35xbm6nM1g1cKuCq3K2lr/L/fEUvqP60Xa7Hk5 52dvRykLgxgHg6yYIsvfPR8Zj8ltz+cJTHCEmcPKBDKEgYtTACZy+xojw5UlRo4cHV1sT5tWVi1KTL MSW/qjWvHR5J3nLh/tnO6z1ovhn2kka6hw8oeDzYe/u8kmhC5RD3+6rnCL2Jtl3mcP2bw35QQA X-Developer-Key: i=vishal.l.verma@intel.com; a=openpgp; fpr=F8682BE134C67A12332A2ED07AFA61BEA3B84DFF Add a command allocator and accessor APIs for the 'GET_LSA' mailbox command. Cc: Ben Widawsky Cc: Dan Williams Reviewed-by: Dan Williams Signed-off-by: Vishal Verma --- cxl/lib/private.h | 5 +++++ cxl/lib/libcxl.c | 36 ++++++++++++++++++++++++++++++++++++ cxl/libcxl.h | 4 ++++ cxl/lib/libcxl.sym | 2 ++ 4 files changed, 47 insertions(+) diff --git a/cxl/lib/private.h b/cxl/lib/private.h index 885553a..bf3a897 100644 --- a/cxl/lib/private.h +++ b/cxl/lib/private.h @@ -73,6 +73,11 @@ struct cxl_cmd_identify { u8 qos_telemetry_caps; } __attribute__((packed)); +struct cxl_cmd_get_lsa_in { + le32 offset; + le32 length; +} __attribute__((packed)); + struct cxl_cmd_get_health_info { u8 health_status; u8 media_status; diff --git a/cxl/lib/libcxl.c b/cxl/lib/libcxl.c index 065824d..76913a2 100644 --- a/cxl/lib/libcxl.c +++ b/cxl/lib/libcxl.c @@ -1036,6 +1036,42 @@ CXL_EXPORT struct cxl_cmd *cxl_cmd_new_raw(struct cxl_memdev *memdev, return cmd; } +CXL_EXPORT struct cxl_cmd *cxl_cmd_new_read_label(struct cxl_memdev *memdev, + unsigned int offset, unsigned int length) +{ + struct cxl_cmd_get_lsa_in *get_lsa; + struct cxl_cmd *cmd; + + cmd = cxl_cmd_new_generic(memdev, CXL_MEM_COMMAND_ID_GET_LSA); + if (!cmd) + return NULL; + + get_lsa = (struct cxl_cmd_get_lsa_in *)cmd->send_cmd->in.payload; + get_lsa->offset = cpu_to_le32(offset); + get_lsa->length = cpu_to_le32(length); + return cmd; +} + +CXL_EXPORT ssize_t cxl_cmd_read_label_get_payload(struct cxl_cmd *cmd, + void *buf, unsigned int length) +{ + struct cxl_cmd_get_lsa_in *get_lsa; + void *payload; + int rc; + + rc = cxl_cmd_validate_status(cmd, CXL_MEM_COMMAND_ID_GET_LSA); + if (rc) + return rc; + + get_lsa = (struct cxl_cmd_get_lsa_in *)cmd->send_cmd->in.payload; + if (length > le32_to_cpu(get_lsa->length)) + return -EINVAL; + + payload = (void *)cmd->send_cmd->out.payload; + memcpy(buf, payload, length); + return length; +} + CXL_EXPORT int cxl_cmd_submit(struct cxl_cmd *cmd) { struct cxl_memdev *memdev = cmd->memdev; diff --git a/cxl/libcxl.h b/cxl/libcxl.h index eae2db8..7408745 100644 --- a/cxl/libcxl.h +++ b/cxl/libcxl.h @@ -95,6 +95,10 @@ int cxl_cmd_health_info_get_temperature(struct cxl_cmd *cmd); int cxl_cmd_health_info_get_dirty_shutdowns(struct cxl_cmd *cmd); int cxl_cmd_health_info_get_volatile_errors(struct cxl_cmd *cmd); int cxl_cmd_health_info_get_pmem_errors(struct cxl_cmd *cmd); +struct cxl_cmd *cxl_cmd_new_read_label(struct cxl_memdev *memdev, + unsigned int offset, unsigned int length); +ssize_t cxl_cmd_read_label_get_payload(struct cxl_cmd *cmd, void *buf, + unsigned int length); #ifdef __cplusplus } /* extern "C" */ diff --git a/cxl/lib/libcxl.sym b/cxl/lib/libcxl.sym index c83bc28..629322c 100644 --- a/cxl/lib/libcxl.sym +++ b/cxl/lib/libcxl.sym @@ -62,6 +62,8 @@ global: cxl_cmd_health_info_get_dirty_shutdowns; cxl_cmd_health_info_get_volatile_errors; cxl_cmd_health_info_get_pmem_errors; + cxl_cmd_new_read_label; + cxl_cmd_read_label_get_payload; local: *; };