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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 3 Dec 2019 03:48:19 -0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id xB33mIbm54526190 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 3 Dec 2019 03:48:18 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8DACA52050; Tue, 3 Dec 2019 03:48:18 +0000 (GMT) Received: from ozlabs.au.ibm.com (unknown [9.192.253.14]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id E53B052052; Tue, 3 Dec 2019 03:48:17 +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 68547A03E8; Tue, 3 Dec 2019 14:48:13 +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 , Andrew Morton , Mauro Carvalho Chehab , "David S. Miller" , Rob Herring , Anton Blanchard , Krzysztof Kozlowski , Mahesh Salgaonkar , Madhavan Srinivasan , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Anju T Sudhakar , Hari Bathini , Thomas Gleixner , Greg Kurz , Nicholas Piggin , Masahiro Yamada , Alexey Kardashevskiy , linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-nvdimm@lists.01.org, linux-mm@kvack.org Subject: [PATCH v2 20/27] nvdimm/ocxl: Add an IOCTL to request controller health & perf data Date: Tue, 3 Dec 2019 14:46:48 +1100 X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191203034655.51561-1-alastair@au1.ibm.com> References: <20191203034655.51561-1-alastair@au1.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 19120303-4275-0000-0000-0000038A31E0 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19120303-4276-0000-0000-0000389DCDD9 Message-Id: <20191203034655.51561-21-alastair@au1.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-12-02_06:2019-11-29,2019-12-02 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 priorityscore=1501 phishscore=0 mlxlogscore=732 mlxscore=0 impostorscore=0 lowpriorityscore=0 malwarescore=0 suspectscore=1 clxscore=1015 spamscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1912030032 Content-Transfer-Encoding: quoted-printable 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 When health & performance data is requested from the controller, it responds with an error log containing the requested information. This patch allows the request to me issued via an IOCTL. Signed-off-by: Alastair D'Silva --- drivers/nvdimm/ocxl/scm.c | 16 ++++++++++++++++ include/uapi/nvdimm/ocxl-scm.h | 1 + 2 files changed, 17 insertions(+) diff --git a/drivers/nvdimm/ocxl/scm.c b/drivers/nvdimm/ocxl/scm.c index 854787950334..d482b3213a02 100644 --- a/drivers/nvdimm/ocxl/scm.c +++ b/drivers/nvdimm/ocxl/scm.c @@ -1048,6 +1048,18 @@ static int scm_ioctl_event_check(struct scm_data *= scm_data, u64 __user *uarg) return rc; } =20 +/** + * scm_req_controller_health_perf() - Request controller health & perfor= mance data + * @scm_data: the SCM metadata + * Return: 0 on success, negative on failure + */ +int scm_req_controller_health_perf(struct scm_data *scm_data) +{ + return ocxl_global_mmio_set64(scm_data->ocxl_afu, GLOBAL_MMIO_HCI, + OCXL_LITTLE_ENDIAN, + GLOBAL_MMIO_HCI_REQ_HEALTH_PERF); +} + static long scm_file_ioctl(struct file *file, unsigned int cmd, unsigned long args) { @@ -1086,6 +1098,10 @@ static long scm_file_ioctl(struct file *file, unsi= gned int cmd, case SCM_IOCTL_EVENT_CHECK: rc =3D scm_ioctl_event_check(scm_data, (u64 __user *)args); break; + + case SCM_IOCTL_REQUEST_HEALTH: + rc =3D scm_req_controller_health_perf(scm_data); + break; } =20 return rc; diff --git a/include/uapi/nvdimm/ocxl-scm.h b/include/uapi/nvdimm/ocxl-sc= m.h index e86ffb02d31f..55a7ad59d614 100644 --- a/include/uapi/nvdimm/ocxl-scm.h +++ b/include/uapi/nvdimm/ocxl-scm.h @@ -90,5 +90,6 @@ struct scm_ioctl_eventfd { #define SCM_IOCTL_CONTROLLER_STATS _IO(SCM_MAGIC, 0x05) #define SCM_IOCTL_EVENTFD _IOW(SCM_MAGIC, 0x06, struct scm_ioctl_eventfd= ) #define SCM_IOCTL_EVENT_CHECK _IOR(SCM_MAGIC, 0x07, __u64) +#define SCM_IOCTL_REQUEST_HEALTH _IO(SCM_MAGIC, 0x08) =20 #endif /* _UAPI_OCXL_SCM_H */ --=20 2.23.0