From patchwork Mon Jan 3 20:16:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alison Schofield X-Patchwork-Id: 12702775 Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) (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 BFC222CA9 for ; Mon, 3 Jan 2022 20:11:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1641240695; x=1672776695; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=a4ist+wRtz5MUDFftoH8bUzPjP4x2s9lbL9nKwk7uk8=; b=KifmBSXoCJ9YvBLuAKqfVe3XqV51UB6JOIAqp6oO979pWkyahY59Qh+l 35yhfCS/U5adZe67FG0gj8xg67VtETtp9rRr4yTM/uv7BdDgpFayC2H7A mGPMsVCP5dkwIZ/iUUZkB1CUvj6/IgqIID0NdLGnLHoA+XozqGGhcEoGs yDaYqbijAz3YcDDxZuSh4U7LdHyyjAvQ8VwNOu5ekN/1nQaQgR01DiJkL iTpXEmm0+8JM4yua88uSFGpw/YSyDRUDcZpb6n8t+qutiJbpnvcUzWKmt dBsBPhq/QaRWAK1ZvMsjOhJb2U5oO62tR66PxJhPHKyrl5HHDvX+zkZbT g==; X-IronPort-AV: E=McAfee;i="6200,9189,10216"; a="302866886" X-IronPort-AV: E=Sophos;i="5.88,258,1635231600"; d="scan'208";a="302866886" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Jan 2022 12:11:33 -0800 X-IronPort-AV: E=Sophos;i="5.88,258,1635231600"; d="scan'208";a="525709392" Received: from alison-desk.jf.intel.com (HELO localhost) ([10.54.74.41]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Jan 2022 12:11:33 -0800 From: alison.schofield@intel.com To: Ben Widawsky , Dan Williams , Ira Weiny , Vishal Verma Cc: Alison Schofield , nvdimm@lists.linux.dev, linux-cxl@vger.kernel.org Subject: [ndctl PATCH 2/7] libcxl: add accessors for capacity fields of the IDENTIFY command Date: Mon, 3 Jan 2022 12:16:13 -0800 Message-Id: <577012d59f5b6b9754d2ce1147585ce5f91a3108.1641233076.git.alison.schofield@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: nvdimm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Alison Schofield Add accessors to retrieve total capacity, volatile only capacity, and persistent only capacity from the IDENTIFY mailbox command. These values are useful when partitioning the device. Signed-off-by: Alison Schofield --- cxl/libcxl.h | 3 +++ cxl/lib/libcxl.c | 29 +++++++++++++++++++++++++++++ cxl/lib/libcxl.sym | 3 +++ 3 files changed, 35 insertions(+) diff --git a/cxl/libcxl.h b/cxl/libcxl.h index 7cf9061..d333b6d 100644 --- a/cxl/libcxl.h +++ b/cxl/libcxl.h @@ -68,6 +68,9 @@ int cxl_cmd_get_mbox_status(struct cxl_cmd *cmd); int cxl_cmd_get_out_size(struct cxl_cmd *cmd); struct cxl_cmd *cxl_cmd_new_identify(struct cxl_memdev *memdev); int cxl_cmd_identify_get_fw_rev(struct cxl_cmd *cmd, char *fw_rev, int fw_len); +unsigned long long cxl_cmd_identify_get_total_capacity(struct cxl_cmd *cmd); +unsigned long long cxl_cmd_identify_get_volatile_only_capacity(struct cxl_cmd *cmd); +unsigned long long cxl_cmd_identify_get_persistent_only_capacity(struct cxl_cmd *cmd); unsigned long long cxl_cmd_identify_get_partition_align(struct cxl_cmd *cmd); unsigned int cxl_cmd_identify_get_label_size(struct cxl_cmd *cmd); struct cxl_cmd *cxl_cmd_new_get_health_info(struct cxl_memdev *memdev); diff --git a/cxl/lib/libcxl.c b/cxl/lib/libcxl.c index f3d4022..715d8e4 100644 --- a/cxl/lib/libcxl.c +++ b/cxl/lib/libcxl.c @@ -1102,6 +1102,35 @@ CXL_EXPORT unsigned int cxl_cmd_identify_get_label_size(struct cxl_cmd *cmd) return le32_to_cpu(id->lsa_size); } +#define cmd_identify_get_capacity_field(cmd, field) \ +do { \ + struct cxl_cmd_identify *c = \ + (struct cxl_cmd_identify *)cmd->send_cmd->out.payload;\ + int rc = cxl_cmd_validate_status(cmd, \ + CXL_MEM_COMMAND_ID_IDENTIFY); \ + if (rc) \ + return ULLONG_MAX; \ + return le64_to_cpu(c->field) * CXL_CAPACITY_MULTIPLIER; \ +} while (0) + +CXL_EXPORT unsigned long long +cxl_cmd_identify_get_total_capacity(struct cxl_cmd *cmd) +{ + cmd_identify_get_capacity_field(cmd, total_capacity); +} + +CXL_EXPORT unsigned long long +cxl_cmd_identify_get_volatile_only_capacity(struct cxl_cmd *cmd) +{ + cmd_identify_get_capacity_field(cmd, volatile_capacity); +} + +CXL_EXPORT unsigned long long +cxl_cmd_identify_get_persistent_only_capacity(struct cxl_cmd *cmd) +{ + cmd_identify_get_capacity_field(cmd, persistent_capacity); +} + CXL_EXPORT struct cxl_cmd *cxl_cmd_new_raw(struct cxl_memdev *memdev, int opcode) { diff --git a/cxl/lib/libcxl.sym b/cxl/lib/libcxl.sym index 09d6d94..bed6427 100644 --- a/cxl/lib/libcxl.sym +++ b/cxl/lib/libcxl.sym @@ -31,6 +31,9 @@ global: cxl_cmd_get_out_size; cxl_cmd_new_identify; cxl_cmd_identify_get_fw_rev; + cxl_cmd_identify_get_total_capacity; + cxl_cmd_identify_get_volatile_only_capacity; + cxl_cmd_identify_get_persistent_only_capacity; cxl_cmd_identify_get_partition_align; cxl_cmd_identify_get_label_size; cxl_cmd_new_get_health_info;