From patchwork Mon Jan 3 20:16:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alison Schofield X-Patchwork-Id: 12702782 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C9F3DC433F5 for ; Mon, 3 Jan 2022 20:11:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230149AbiACULe (ORCPT ); Mon, 3 Jan 2022 15:11:34 -0500 Received: from mga12.intel.com ([192.55.52.136]:35284 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229472AbiACULe (ORCPT ); Mon, 3 Jan 2022 15:11:34 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1641240694; x=1672776694; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=deLhvT2rkO5L/SLA7rPyzJse0nz+c7TFWMdZ+dd8Fz8=; b=n5HdY1smPu8ykkxFisHHBJ9ogA31HYp3X+BtS10ujHlLsDyrGbqfnmZB 0kTKRrk8DLkNlL8MOpgc2wEYmFYzLqwFsocqHCuJoB5wuuzxVLuegPDhs wzwKrcSCaGUg/UmBp1/NXRYzg4v5Hi2vs6ZIT6i2fppgX6emLp7cuNzi2 dj+iYzHQYnAZQxtxCNc4YhpxRq/mls4SzcgssOD7GjtejVt4mJ6PEINZO Hh34XJCCbVe0mKBbdHDkbL13JLgVEbq/TNcN3AzOJ40ROLetHskO1WadR HkmIFN3uUFHQRkERwMXXTwXz5UZv547U5fz8gaIy1E+5i+hl65+JiQK0O w==; X-IronPort-AV: E=McAfee;i="6200,9189,10216"; a="222105774" X-IronPort-AV: E=Sophos;i="5.88,258,1635231600"; d="scan'208";a="222105774" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga106.fm.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="525709387" 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 1/7] libcxl: add GET_PARTITION_INFO mailbox command and accessors Date: Mon, 3 Jan 2022 12:16:12 -0800 Message-Id: <9d3c55cbd36efb6eabec075cc8596a6382f1f145.1641233076.git.alison.schofield@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-cxl@vger.kernel.org From: Alison Schofield Add libcxl APIs to create a new GET_PARTITION_INFO mailbox command, the command output data structure (privately), and accessor APIs to return the different fields in the partition info output. Signed-off-by: Alison Schofield --- cxl/lib/private.h | 10 ++++++++++ cxl/libcxl.h | 5 +++++ util/size.h | 1 + cxl/lib/libcxl.c | 41 +++++++++++++++++++++++++++++++++++++++++ cxl/lib/libcxl.sym | 5 +++++ 5 files changed, 62 insertions(+) diff --git a/cxl/lib/private.h b/cxl/lib/private.h index a1b8b50..dd9234f 100644 --- a/cxl/lib/private.h +++ b/cxl/lib/private.h @@ -7,6 +7,7 @@ #include #include #include +#include #define CXL_EXPORT __attribute__ ((visibility("default"))) @@ -104,6 +105,15 @@ struct cxl_cmd_get_health_info { le32 pmem_errors; } __attribute__((packed)); +struct cxl_cmd_get_partition_info { + le64 active_volatile_cap; + le64 active_persistent_cap; + le64 next_volatile_cap; + le64 next_persistent_cap; +} __attribute__((packed)); + +#define CXL_CAPACITY_MULTIPLIER SZ_256M + /* CXL 2.0 8.2.9.5.3 Byte 0 Health Status */ #define CXL_CMD_HEALTH_INFO_STATUS_MAINTENANCE_NEEDED_MASK BIT(0) #define CXL_CMD_HEALTH_INFO_STATUS_PERFORMANCE_DEGRADED_MASK BIT(1) diff --git a/cxl/libcxl.h b/cxl/libcxl.h index 89d35ba..7cf9061 100644 --- a/cxl/libcxl.h +++ b/cxl/libcxl.h @@ -109,6 +109,11 @@ ssize_t cxl_cmd_read_label_get_payload(struct cxl_cmd *cmd, void *buf, unsigned int length); struct cxl_cmd *cxl_cmd_new_write_label(struct cxl_memdev *memdev, void *buf, unsigned int offset, unsigned int length); +struct cxl_cmd *cxl_cmd_new_get_partition_info(struct cxl_memdev *memdev); +unsigned long long cxl_cmd_get_partition_info_get_active_volatile_cap(struct cxl_cmd *cmd); +unsigned long long cxl_cmd_get_partition_info_get_active_persistent_cap(struct cxl_cmd *cmd); +unsigned long long cxl_cmd_get_partition_info_get_next_volatile_cap(struct cxl_cmd *cmd); +unsigned long long cxl_cmd_get_partition_info_get_next_persistent_cap(struct cxl_cmd *cmd); #ifdef __cplusplus } /* extern "C" */ diff --git a/util/size.h b/util/size.h index a0f3593..e72467f 100644 --- a/util/size.h +++ b/util/size.h @@ -15,6 +15,7 @@ #define SZ_4M 0x00400000 #define SZ_16M 0x01000000 #define SZ_64M 0x04000000 +#define SZ_256M 0x10000000 #define SZ_1G 0x40000000 #define SZ_1T 0x10000000000ULL diff --git a/cxl/lib/libcxl.c b/cxl/lib/libcxl.c index f0664be..f3d4022 100644 --- a/cxl/lib/libcxl.c +++ b/cxl/lib/libcxl.c @@ -1157,6 +1157,47 @@ CXL_EXPORT ssize_t cxl_cmd_read_label_get_payload(struct cxl_cmd *cmd, return length; } +CXL_EXPORT struct cxl_cmd *cxl_cmd_new_get_partition_info(struct cxl_memdev *memdev) +{ + return cxl_cmd_new_generic(memdev, + CXL_MEM_COMMAND_ID_GET_PARTITION_INFO); +} + +#define cmd_partition_get_capacity_field(cmd, field) \ +do { \ + struct cxl_cmd_get_partition_info *c = \ + (struct cxl_cmd_get_partition_info *)cmd->send_cmd->out.payload;\ + int rc = cxl_cmd_validate_status(cmd, \ + CXL_MEM_COMMAND_ID_GET_PARTITION_INFO); \ + if (rc) \ + return ULLONG_MAX; \ + return le64_to_cpu(c->field) * CXL_CAPACITY_MULTIPLIER; \ +} while (0) + +CXL_EXPORT unsigned long long +cxl_cmd_get_partition_info_get_active_volatile_cap(struct cxl_cmd *cmd) +{ + cmd_partition_get_capacity_field(cmd, active_volatile_cap); +} + +CXL_EXPORT unsigned long long +cxl_cmd_get_partition_info_get_active_persistent_cap(struct cxl_cmd *cmd) +{ + cmd_partition_get_capacity_field(cmd, active_persistent_cap); +} + +CXL_EXPORT unsigned long long +cxl_cmd_get_partition_info_get_next_volatile_cap(struct cxl_cmd *cmd) +{ + cmd_partition_get_capacity_field(cmd, next_volatile_cap); +} + +CXL_EXPORT unsigned long long +cxl_cmd_get_partition_info_get_next_persistent_cap(struct cxl_cmd *cmd) +{ + cmd_partition_get_capacity_field(cmd, next_persistent_cap); +} + CXL_EXPORT int cxl_cmd_submit(struct cxl_cmd *cmd) { struct cxl_memdev *memdev = cmd->memdev; diff --git a/cxl/lib/libcxl.sym b/cxl/lib/libcxl.sym index 077d104..09d6d94 100644 --- a/cxl/lib/libcxl.sym +++ b/cxl/lib/libcxl.sym @@ -70,6 +70,11 @@ global: cxl_memdev_zero_label; cxl_memdev_write_label; cxl_memdev_read_label; + cxl_cmd_new_get_partition_info; + cxl_cmd_get_partition_info_get_active_volatile_cap; + cxl_cmd_get_partition_info_get_active_persistent_cap; + cxl_cmd_get_partition_info_get_next_volatile_cap; + cxl_cmd_get_partition_info_get_next_persistent_cap; local: *; };