From patchwork Fri Aug 16 14:44:25 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 13766448 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) (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 6C1F51C7B94; Fri, 16 Aug 2024 14:45:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.19 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723819517; cv=none; b=G3QyQv3dlP00gPiHt9PCUVXIbhN07iRvJX6Fm/sXhK9DwXTzneEjd3Ij3LS7ZKCSSYKcn+y1rzU094WluVkGAWY3QGjx8j3xzLm5pQ0UdZSe5nVmdSJPgwFoKKrnidk/CjvtGkZP1LwyQQHvclIe0MXp7QvkunbkiM77f6/TNIM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723819517; c=relaxed/simple; bh=rtMOyYUF7/zcviFSIemMbPTqVQ6yT71bTtts6Upb2Sg=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=B5nSD0MVd6K6ddOEJ+QxAeVg0G+9hmsQslPHs564Ye6dlLZ/ehJ1g1xnYY69Axu3Cltj6MllUACKDlE+qdfP6u93QtdA+Fpr05K0PMhYxpbwneXQOwaIk+owES+QPNQyW97mG2eug0URVE07Qy4TUGy+4ZrSPMjbV00Rgoa+B7Q= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=nlQEyVH+; arc=none smtp.client-ip=198.175.65.19 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="nlQEyVH+" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1723819514; x=1755355514; h=from:date:subject:mime-version:content-transfer-encoding: message-id:references:in-reply-to:to:cc; bh=rtMOyYUF7/zcviFSIemMbPTqVQ6yT71bTtts6Upb2Sg=; b=nlQEyVH+gJ1MMarX2Zr9fYtecxUBZl6J44af+SaMqX+KhPLj4/u/UsRf rJ24UgtFvh15yOTlY5pQ5mzShUcRoMi1u+smfNy1Ve34+EheprgBDLnmd iR7gmIi/IvfYOE3jsNvW8oweog3tlZTGxiZINczN4x0yY6Jx4fyRP/75+ HRnWDMYYVapSdwUP4ydi/nNNiHSYQlfq8t9h9TDVG2mjXZHtXG8HUjOHF TCKfc0bfplAXy5gU+UAdDYHa7KdthSv/8MTg4fZr4wMcPvaF7YS52vWz5 aeg6fGV/bZLwmBRNYJyMcXDorokvM7V6dRRAivOwpnnToJHANxsBvOXo4 A==; X-CSE-ConnectionGUID: KaqP1CVfRtuzeLldxzS6dA== X-CSE-MsgGUID: 8vBnU3nQR8CUdoyUs2+D4A== X-IronPort-AV: E=McAfee;i="6700,10204,11166"; a="21973047" X-IronPort-AV: E=Sophos;i="6.10,152,1719903600"; d="scan'208";a="21973047" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Aug 2024 07:45:10 -0700 X-CSE-ConnectionGUID: 1Bqfn8g+TGyBinhHaOKWHw== X-CSE-MsgGUID: 5Nhr34nPSsO7hjwSL9EdSw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,152,1719903600"; d="scan'208";a="97205577" Received: from iweiny-mobl.amr.corp.intel.com (HELO localhost) ([10.125.111.52]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Aug 2024 07:45:08 -0700 From: Ira Weiny Date: Fri, 16 Aug 2024 09:44:25 -0500 Subject: [PATCH v3 17/25] cxl/core: Return endpoint decoder information from region search Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240816-dcd-type2-upstream-v3-17-7c9b96cba6d7@intel.com> References: <20240816-dcd-type2-upstream-v3-0-7c9b96cba6d7@intel.com> In-Reply-To: <20240816-dcd-type2-upstream-v3-0-7c9b96cba6d7@intel.com> To: Dave Jiang , Fan Ni , Jonathan Cameron , Navneet Singh , Chris Mason , Josef Bacik , David Sterba , Petr Mladek , Steven Rostedt , Andy Shevchenko , Rasmus Villemoes , Sergey Senozhatsky , Jonathan Corbet , Andrew Morton Cc: Dan Williams , Davidlohr Bueso , Alison Schofield , Vishal Verma , Ira Weiny , linux-btrfs@vger.kernel.org, linux-cxl@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, nvdimm@lists.linux.dev X-Mailer: b4 0.15-dev-37811 X-Developer-Signature: v=1; a=ed25519-sha256; t=1723819456; l=4183; i=ira.weiny@intel.com; s=20221211; h=from:subject:message-id; bh=rtMOyYUF7/zcviFSIemMbPTqVQ6yT71bTtts6Upb2Sg=; b=MII9S6m9zDYb/jKIouC3sr8W1fpsyDXzsmOsbNYTo6AGvZDn++tx9KBBkR6uCtz5Aiejg+que 25JqglN6AQdD65BANJbN8q1/djKKuCXpCe9x6neqMCwHtXUtZqu/9Mb X-Developer-Key: i=ira.weiny@intel.com; a=ed25519; pk=noldbkG+Wp1qXRrrkfY1QJpDf7QsOEthbOT7vm0PqsE= cxl_dpa_to_region() finds the region from a tuple. The search involves finding the device endpoint decoder as well. Dynamic capacity extent processing uses the endpoint decoder HPA information to calculate the HPA offset. In addition, well behaved extents should be contained within an endpoint decoder. Return the endpoint decoder found to be used in subsequent DCD code. Signed-off-by: Ira Weiny Reviewed-by: Dave Jiang Reviewed-by: Jonathan Cameron Reviewed-by: Li Ming --- drivers/cxl/core/core.h | 6 ++++-- drivers/cxl/core/mbox.c | 2 +- drivers/cxl/core/memdev.c | 4 ++-- drivers/cxl/core/region.c | 8 +++++++- 4 files changed, 14 insertions(+), 6 deletions(-) diff --git a/drivers/cxl/core/core.h b/drivers/cxl/core/core.h index 15b6cf1c19ef..76c4153a9b2c 100644 --- a/drivers/cxl/core/core.h +++ b/drivers/cxl/core/core.h @@ -39,7 +39,8 @@ void cxl_decoder_kill_region(struct cxl_endpoint_decoder *cxled); int cxl_region_init(void); void cxl_region_exit(void); int cxl_get_poison_by_endpoint(struct cxl_port *port); -struct cxl_region *cxl_dpa_to_region(const struct cxl_memdev *cxlmd, u64 dpa); +struct cxl_region *cxl_dpa_to_region(const struct cxl_memdev *cxlmd, u64 dpa, + struct cxl_endpoint_decoder **cxled); u64 cxl_dpa_to_hpa(struct cxl_region *cxlr, const struct cxl_memdev *cxlmd, u64 dpa); @@ -50,7 +51,8 @@ static inline u64 cxl_dpa_to_hpa(struct cxl_region *cxlr, return ULLONG_MAX; } static inline -struct cxl_region *cxl_dpa_to_region(const struct cxl_memdev *cxlmd, u64 dpa) +struct cxl_region *cxl_dpa_to_region(const struct cxl_memdev *cxlmd, u64 dpa, + struct cxl_endpoint_decoder **cxled) { return NULL; } diff --git a/drivers/cxl/core/mbox.c b/drivers/cxl/core/mbox.c index 68c26c4be91a..01a447aaa1b1 100644 --- a/drivers/cxl/core/mbox.c +++ b/drivers/cxl/core/mbox.c @@ -909,7 +909,7 @@ void cxl_event_trace_record(const struct cxl_memdev *cxlmd, guard(rwsem_read)(&cxl_dpa_rwsem); dpa = le64_to_cpu(evt->media_hdr.phys_addr) & CXL_DPA_MASK; - cxlr = cxl_dpa_to_region(cxlmd, dpa); + cxlr = cxl_dpa_to_region(cxlmd, dpa, NULL); if (cxlr) hpa = cxl_dpa_to_hpa(cxlr, cxlmd, dpa); diff --git a/drivers/cxl/core/memdev.c b/drivers/cxl/core/memdev.c index 7da1f0f5711a..12fb07fb89a6 100644 --- a/drivers/cxl/core/memdev.c +++ b/drivers/cxl/core/memdev.c @@ -323,7 +323,7 @@ int cxl_inject_poison(struct cxl_memdev *cxlmd, u64 dpa) if (rc) goto out; - cxlr = cxl_dpa_to_region(cxlmd, dpa); + cxlr = cxl_dpa_to_region(cxlmd, dpa, NULL); if (cxlr) dev_warn_once(mds->cxlds.dev, "poison inject dpa:%#llx region: %s\n", dpa, @@ -387,7 +387,7 @@ int cxl_clear_poison(struct cxl_memdev *cxlmd, u64 dpa) if (rc) goto out; - cxlr = cxl_dpa_to_region(cxlmd, dpa); + cxlr = cxl_dpa_to_region(cxlmd, dpa, NULL); if (cxlr) dev_warn_once(mds->cxlds.dev, "poison clear dpa:%#llx region: %s\n", dpa, diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c index 35c4a1f4f9bd..8e0884b52f84 100644 --- a/drivers/cxl/core/region.c +++ b/drivers/cxl/core/region.c @@ -2828,6 +2828,7 @@ int cxl_get_poison_by_endpoint(struct cxl_port *port) struct cxl_dpa_to_region_context { struct cxl_region *cxlr; u64 dpa; + struct cxl_endpoint_decoder *cxled; }; static int __cxl_dpa_to_region(struct device *dev, void *arg) @@ -2861,11 +2862,13 @@ static int __cxl_dpa_to_region(struct device *dev, void *arg) dev_name(dev)); ctx->cxlr = cxlr; + ctx->cxled = cxled; return 1; } -struct cxl_region *cxl_dpa_to_region(const struct cxl_memdev *cxlmd, u64 dpa) +struct cxl_region *cxl_dpa_to_region(const struct cxl_memdev *cxlmd, u64 dpa, + struct cxl_endpoint_decoder **cxled) { struct cxl_dpa_to_region_context ctx; struct cxl_port *port; @@ -2877,6 +2880,9 @@ struct cxl_region *cxl_dpa_to_region(const struct cxl_memdev *cxlmd, u64 dpa) if (port && is_cxl_endpoint(port) && cxl_num_decoders_committed(port)) device_for_each_child(&port->dev, &ctx, __cxl_dpa_to_region); + if (cxled) + *cxled = ctx.cxled; + return ctx.cxlr; }