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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Fri, 21 Feb 2020 03:28:08 -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 01L3S89x51314814 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 21 Feb 2020 03:28:08 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id EE38F52052; Fri, 21 Feb 2020 03:28:07 +0000 (GMT) Received: from ozlabs.au.ibm.com (unknown [9.192.253.14]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id 45FC35204E; Fri, 21 Feb 2020 03:28:07 +0000 (GMT) Received: from adsilva.ozlabs.ibm.com (haven.au.ibm.com [9.192.254.114]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.au.ibm.com (Postfix) with ESMTPSA id A59CDA027A; Fri, 21 Feb 2020 14:28:02 +1100 (AEDT) From: "Alastair D'Silva" To: alastair@d-silva.org Subject: [PATCH v3 03/27] powerpc: Map & release OpenCAPI LPC memory Date: Fri, 21 Feb 2020 14:26:56 +1100 X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200221032720.33893-1-alastair@au1.ibm.com> References: <20200221032720.33893-1-alastair@au1.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 x-cbid: 20022103-4275-0000-0000-000003A3FE60 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20022103-4276-0000-0000-000038B80C78 Message-Id: <20200221032720.33893-4-alastair@au1.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.572 definitions=2020-02-20_19:2020-02-19, 2020-02-20 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 spamscore=0 clxscore=1015 phishscore=0 mlxlogscore=480 impostorscore=0 priorityscore=1501 adultscore=0 lowpriorityscore=0 malwarescore=0 suspectscore=3 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002210021 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Madhavan Srinivasan , Alexey Kardashevskiy , Masahiro Yamada , Oliver O'Halloran , Mauro Carvalho Chehab , Ira Weiny , Thomas Gleixner , Rob Herring , Dave Jiang , linux-nvdimm@lists.01.org, "Aneesh Kumar K . V" , Krzysztof Kozlowski , Anju T Sudhakar , Mahesh Salgaonkar , Andrew Donnellan , Arnd Bergmann , Greg Kurz , Nicholas Piggin , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Dan Williams , Hari Bathini , linux-mm@kvack.org, Greg Kroah-Hartman , linux-kernel@vger.kernel.org, Vishal Verma , Frederic Barrat , Paul Mackerras , Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S. Miller" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Alastair D'Silva This patch adds platform support to map & release LPC memory. Signed-off-by: Alastair D'Silva --- arch/powerpc/include/asm/pnv-ocxl.h | 4 +++ arch/powerpc/platforms/powernv/ocxl.c | 43 +++++++++++++++++++++++++++ 2 files changed, 47 insertions(+) diff --git a/arch/powerpc/include/asm/pnv-ocxl.h b/arch/powerpc/include/asm/pnv-ocxl.h index 7de82647e761..0b2a6707e555 100644 --- a/arch/powerpc/include/asm/pnv-ocxl.h +++ b/arch/powerpc/include/asm/pnv-ocxl.h @@ -32,5 +32,9 @@ extern int pnv_ocxl_spa_remove_pe_from_cache(void *platform_data, int pe_handle) extern int pnv_ocxl_alloc_xive_irq(u32 *irq, u64 *trigger_addr); extern void pnv_ocxl_free_xive_irq(u32 irq); +#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE +u64 pnv_ocxl_platform_lpc_setup(struct pci_dev *pdev, u64 size); +void pnv_ocxl_platform_lpc_release(struct pci_dev *pdev); +#endif #endif /* _ASM_PNV_OCXL_H */ diff --git a/arch/powerpc/platforms/powernv/ocxl.c b/arch/powerpc/platforms/powernv/ocxl.c index 8c65aacda9c8..f2edbcc67361 100644 --- a/arch/powerpc/platforms/powernv/ocxl.c +++ b/arch/powerpc/platforms/powernv/ocxl.c @@ -475,6 +475,49 @@ void pnv_ocxl_spa_release(void *platform_data) } EXPORT_SYMBOL_GPL(pnv_ocxl_spa_release); +#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE +u64 pnv_ocxl_platform_lpc_setup(struct pci_dev *pdev, u64 size) +{ + struct pci_controller *hose = pci_bus_to_host(pdev->bus); + struct pnv_phb *phb = hose->private_data; + u32 bdfn = pci_dev_id(pdev); + __be64 base_addr_be64; + u64 base_addr; + int rc; + + rc = opal_npu_mem_alloc(phb->opal_id, bdfn, size, &base_addr_be64); + if (rc) { + dev_warn(&pdev->dev, + "OPAL could not allocate LPC memory, rc=%d\n", rc); + return 0; + } + + base_addr = be64_to_cpu(base_addr_be64); + + rc = check_hotplug_memory_addressable(base_addr >> PAGE_SHIFT, + size >> PAGE_SHIFT); + if (rc) + return 0; + + return base_addr; +} +EXPORT_SYMBOL_GPL(pnv_ocxl_platform_lpc_setup); + +void pnv_ocxl_platform_lpc_release(struct pci_dev *pdev) +{ + struct pci_controller *hose = pci_bus_to_host(pdev->bus); + struct pnv_phb *phb = hose->private_data; + u32 bdfn = pci_dev_id(pdev); + int rc; + + rc = opal_npu_mem_release(phb->opal_id, bdfn); + if (rc) + dev_warn(&pdev->dev, + "OPAL reported rc=%d when releasing LPC memory\n", rc); +} +EXPORT_SYMBOL_GPL(pnv_ocxl_platform_lpc_release); +#endif + int pnv_ocxl_spa_remove_pe_from_cache(void *platform_data, int pe_handle) { struct spa_data *data = (struct spa_data *) platform_data; -- 2.24.1