From patchwork Mon Jan 3 20:16:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alison Schofield X-Patchwork-Id: 12702778 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 F12A02CA7 for ; Mon, 3 Jan 2022 20:11:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1641240696; x=1672776696; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ExZXAVTyWRNmIDDrWFSUQMsvxT+hLCcqMNH1z0HRo30=; b=DicS7Iy9nQPpChkXl/Hhyvqa9rfFYzfq5KJBfYsJlE2PIl8WVZ1HjbEv fIl5OnKVLIutwkT/yDKHJgc/z1rp1LdP7ERoyzIceFUhR0ZrX8dtlPgBX tTVFxcO0uEwq3bwlzVFCeRk9aWTBju1S3N5p5g4lxEoK5bmbjE5XOJj/J kgAtje2/xX9koU86gWb7K+PnjZN2IGIneCSHlUZRL9MtSrT6vVOBwJ9sE NXE3PAFWUDRHc7d9idSXp2lXryLY4l6AQxvz4zHaA97vEsJhWt5T19uv8 VLtbcC1ozn8+mrl2ZDg5AmpYHz4hevLq9zCPqRzNirwnPgtZFx85frNWt A==; X-IronPort-AV: E=McAfee;i="6200,9189,10216"; a="302866891" X-IronPort-AV: E=Sophos;i="5.88,258,1635231600"; d="scan'208";a="302866891" 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="525709404" 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 5/7] libcxl: add interfaces for SET_PARTITION_INFO mailbox command Date: Mon, 3 Jan 2022 12:16:16 -0800 Message-Id: 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 APIs to allocate and send a SET_PARTITION_INFO mailbox command. Signed-off-by: Alison Schofield --- cxl/lib/private.h | 9 +++++++++ cxl/libcxl.h | 4 ++++ cxl/lib/libcxl.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ cxl/lib/libcxl.sym | 3 +++ 4 files changed, 61 insertions(+) diff --git a/cxl/lib/private.h b/cxl/lib/private.h index dd9234f..841aa80 100644 --- a/cxl/lib/private.h +++ b/cxl/lib/private.h @@ -114,6 +114,15 @@ struct cxl_cmd_get_partition_info { #define CXL_CAPACITY_MULTIPLIER SZ_256M +struct cxl_cmd_set_partition_info { + le64 volatile_capacity; + u8 flags; +} __attribute__((packed)); + +/* CXL 2.0 8.2.9.5.2 Set Partition Info */ +#define CXL_CMD_SET_PARTITION_INFO_NO_FLAG (0) +#define CXL_CMD_SET_PARTITION_INFO_IMMEDIATE_FLAG (1) + /* 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 d333b6d..67d6ffc 100644 --- a/cxl/libcxl.h +++ b/cxl/libcxl.h @@ -50,6 +50,8 @@ int cxl_memdev_read_label(struct cxl_memdev *memdev, void *buf, size_t length, size_t offset); int cxl_memdev_write_label(struct cxl_memdev *memdev, void *buf, size_t length, size_t offset); +int cxl_memdev_set_partition_info(struct cxl_memdev *memdev, + unsigned long long volatile_capacity, int flags); #define cxl_memdev_foreach(ctx, memdev) \ for (memdev = cxl_memdev_get_first(ctx); \ @@ -117,6 +119,8 @@ unsigned long long cxl_cmd_get_partition_info_get_active_volatile_cap(struct cxl 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); +struct cxl_cmd *cxl_cmd_new_set_partition_info(struct cxl_memdev *memdev, + unsigned long long volatile_capacity, int flags); #ifdef __cplusplus } /* extern "C" */ diff --git a/cxl/lib/libcxl.c b/cxl/lib/libcxl.c index 85a6c0e..877a783 100644 --- a/cxl/lib/libcxl.c +++ b/cxl/lib/libcxl.c @@ -1227,6 +1227,21 @@ cxl_cmd_get_partition_info_get_next_persistent_cap(struct cxl_cmd *cmd) cmd_partition_get_capacity_field(cmd, next_persistent_cap); } +CXL_EXPORT struct cxl_cmd *cxl_cmd_new_set_partition_info(struct cxl_memdev *memdev, + unsigned long long volatile_capacity, int flags) +{ + struct cxl_cmd_set_partition_info *set_partition; + struct cxl_cmd *cmd; + + cmd = cxl_cmd_new_generic(memdev, + CXL_MEM_COMMAND_ID_SET_PARTITION_INFO); + + set_partition = (struct cxl_cmd_set_partition_info *)cmd->send_cmd->in.payload; + set_partition->volatile_capacity = cpu_to_le64(volatile_capacity); + set_partition->flags = flags; + return cmd; +} + CXL_EXPORT int cxl_cmd_submit(struct cxl_cmd *cmd) { struct cxl_memdev *memdev = cmd->memdev; @@ -1425,3 +1440,33 @@ CXL_EXPORT int cxl_memdev_read_label(struct cxl_memdev *memdev, void *buf, { return lsa_op(memdev, LSA_OP_GET, buf, length, offset); } + +CXL_EXPORT int cxl_memdev_set_partition_info(struct cxl_memdev *memdev, + unsigned long long volatile_capacity, int flags) +{ + struct cxl_ctx *ctx = cxl_memdev_get_ctx(memdev); + struct cxl_cmd *cmd; + int rc; + + dbg(ctx, "%s: enter cap: %llx, flags %d\n", __func__, + volatile_capacity, flags); + + cmd = cxl_cmd_new_set_partition_info(memdev, + volatile_capacity / CXL_CAPACITY_MULTIPLIER, flags); + if (!cmd) + return -ENXIO; + + rc = cxl_cmd_submit(cmd); + if (rc < 0) { + err(ctx, "cmd submission failed: %s\n", strerror(-rc)); + goto err; + } + rc = cxl_cmd_get_mbox_status(cmd); + if (rc != 0) { + err(ctx, "%s: mbox status: %d\n", __func__, rc); + rc = -ENXIO; + } +err: + cxl_cmd_unref(cmd); + return rc; +} diff --git a/cxl/lib/libcxl.sym b/cxl/lib/libcxl.sym index bed6427..5d02c45 100644 --- a/cxl/lib/libcxl.sym +++ b/cxl/lib/libcxl.sym @@ -78,6 +78,9 @@ global: 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; + cxl_cmd_new_set_partition_info; + cxl_memdev_set_partition_info; + local: *; };