From patchwork Fri Oct 25 04:46:55 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alastair D'Silva X-Patchwork-Id: 11211281 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DC7BA112B for ; Fri, 25 Oct 2019 04:48:40 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 9E75C21D7F for ; Fri, 25 Oct 2019 04:48:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9E75C21D7F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=au1.ibm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id C9EEC6B0003; Fri, 25 Oct 2019 00:48:39 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id C50FB6B0006; Fri, 25 Oct 2019 00:48:39 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B17006B0007; Fri, 25 Oct 2019 00:48:39 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0005.hostedemail.com [216.40.44.5]) by kanga.kvack.org (Postfix) with ESMTP id 867F16B0003 for ; Fri, 25 Oct 2019 00:48:39 -0400 (EDT) Received: from smtpin03.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with SMTP id 2E011181AEF2A for ; Fri, 25 Oct 2019 04:48:39 +0000 (UTC) X-FDA: 76081076358.03.tooth81_85a59cc286c3f X-Spam-Summary: 2,0,0,870c7b403bd5d925,d41d8cd98f00b204,alastair@au1.ibm.com,:alastair@d-silva.org:benh@kernel.crashing.org:paulus@samba.org:mpe@ellerman.id.au:fbarrat@linux.ibm.com:ajd@linux.ibm.com:arnd@arndb.de:gregkh@linuxfoundation.org:dan.j.williams@intel.com:vishal.l.verma@intel.com:dave.jiang@intel.com:keith.busch@intel.com:ira.weiny@intel.com:anton@ozlabs.org:krzk@kernel.org:geert+renesas@glider.be:anju@linux.vnet.ibm.com:clg@kaod.org:mahesh@linux.vnet.ibm.com:hbathini@linux.ibm.com:hegdevasant@linux.vnet.ibm.com:tglx@linutronix.de:allison@lohutok.net:groug@kaod.org:npiggin@gmail.com:aik@ozlabs.ru:yamada.masahiro@socionext.com:akpm@linux-foundation.org:david@redhat.com:osalvador@suse.com:mhocko@suse.com:pasha.tatashin@soleen.com:richard.weiyang@gmail.com:cai@lca.pw:linuxppc-dev@lists.ozlabs.org:linux-kernel@vger.kernel.org:linux-nvdimm@lists.01.org:,RULES_HIT:41:355:379:541:800:960:968:973:981:988:989:1260:1261:1311:1314:1345:1431:1437:1515:1535:1542:1711:1730:1747:1 777:1792 X-HE-Tag: tooth81_85a59cc286c3f X-Filterd-Recvd-Size: 7184 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by imf06.hostedemail.com (Postfix) with ESMTP for ; Fri, 25 Oct 2019 04:48:38 +0000 (UTC) Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x9P4lcVi035587 for ; Fri, 25 Oct 2019 00:48:36 -0400 Received: from e06smtp05.uk.ibm.com (e06smtp05.uk.ibm.com [195.75.94.101]) by mx0a-001b2d01.pphosted.com with ESMTP id 2vus29t2db-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 25 Oct 2019 00:48:36 -0400 Received: from localhost by e06smtp05.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Fri, 25 Oct 2019 05:48:25 +0100 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x9P4mOAN42991730 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 25 Oct 2019 04:48:24 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 489635204F; Fri, 25 Oct 2019 04:48:24 +0000 (GMT) Received: from ozlabs.au.ibm.com (unknown [9.192.253.14]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id 9AAC952051; Fri, 25 Oct 2019 04:48:23 +0000 (GMT) Received: from adsilva.ozlabs.ibm.com (haven.au.ibm.com [9.192.254.114]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.au.ibm.com (Postfix) with ESMTPSA id C0730A0147; Fri, 25 Oct 2019 15:48:21 +1100 (AEDT) From: "Alastair D'Silva" To: alastair@d-silva.org Cc: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Frederic Barrat , Andrew Donnellan , Arnd Bergmann , Greg Kroah-Hartman , Dan Williams , Vishal Verma , Dave Jiang , Keith Busch , Ira Weiny , Anton Blanchard , Krzysztof Kozlowski , Geert Uytterhoeven , Anju T Sudhakar , =?utf-8?q?C=C3=A9dric_Le_Goater?= , Mahesh Salgaonkar , Hari Bathini , Vasant Hegde , Thomas Gleixner , Allison Randal , Greg Kurz , Nicholas Piggin , Alexey Kardashevskiy , Masahiro Yamada , Andrew Morton , David Hildenbrand , Oscar Salvador , Michal Hocko , Pavel Tatashin , Wei Yang , Qian Cai , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org, linux-mm@kvack.org Subject: [PATCH 00/10] Add support for OpenCAPI SCM devices Date: Fri, 25 Oct 2019 15:46:55 +1100 X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 19102504-0020-0000-0000-0000037E3ECB X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19102504-0021-0000-0000-000021D488E6 Message-Id: <20191025044721.16617-1-alastair@au1.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-10-25_02:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=694 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1910250045 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Alastair D'Silva This series adds support for OpenCAPI SCM devices, exposing them as nvdimms so that we can make use of the existing infrastructure. The first patch (in memory_hotplug) has reviews/acks, but has not yet made it upstream. Alastair D'Silva (10): memory_hotplug: Add a bounds check to __add_pages nvdimm: remove prototypes for nonexistent functions powerpc: Add OPAL calls for LPC memory alloc/release powerpc: Map & release OpenCAPI LPC memory ocxl: Tally up the LPC memory on a link & allow it to be mapped ocxl: Add functions to map/unmap LPC memory ocxl: Save the device serial number in ocxl_fn nvdimm: Add driver for OpenCAPI Storage Class Memory powerpc: Enable OpenCAPI Storage Class Memory driver on bare metal ocxl: Conditionally bind SCM devices to the generic OCXL driver arch/powerpc/configs/powernv_defconfig | 4 + arch/powerpc/include/asm/opal-api.h | 2 + arch/powerpc/include/asm/opal.h | 3 + arch/powerpc/include/asm/pnv-ocxl.h | 2 + arch/powerpc/platforms/powernv/ocxl.c | 41 + arch/powerpc/platforms/powernv/opal-call.c | 2 + drivers/misc/ocxl/Kconfig | 7 + drivers/misc/ocxl/config.c | 50 + drivers/misc/ocxl/core.c | 60 + drivers/misc/ocxl/link.c | 60 + drivers/misc/ocxl/ocxl_internal.h | 36 + drivers/misc/ocxl/pci.c | 3 + drivers/nvdimm/Kconfig | 17 + drivers/nvdimm/Makefile | 3 + drivers/nvdimm/nd-core.h | 4 - drivers/nvdimm/ocxl-scm.c | 2210 ++++++++++++++++++++ drivers/nvdimm/ocxl-scm_internal.c | 232 ++ drivers/nvdimm/ocxl-scm_internal.h | 331 +++ drivers/nvdimm/ocxl-scm_sysfs.c | 219 ++ include/linux/memory_hotplug.h | 5 + include/misc/ocxl.h | 19 + include/uapi/linux/ocxl-scm.h | 128 ++ mm/memory_hotplug.c | 22 + 23 files changed, 3456 insertions(+), 4 deletions(-) create mode 100644 drivers/nvdimm/ocxl-scm.c create mode 100644 drivers/nvdimm/ocxl-scm_internal.c create mode 100644 drivers/nvdimm/ocxl-scm_internal.h create mode 100644 drivers/nvdimm/ocxl-scm_sysfs.c create mode 100644 include/uapi/linux/ocxl-scm.h