From patchwork Mon Mar 26 16:34:35 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Uma Krishnan X-Patchwork-Id: 10308251 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id C3BAA600CC for ; Mon, 26 Mar 2018 16:34:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B29F729793 for ; Mon, 26 Mar 2018 16:34:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A458A29796; Mon, 26 Mar 2018 16:34:43 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3D3EC29793 for ; Mon, 26 Mar 2018 16:34:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751865AbeCZQem (ORCPT ); Mon, 26 Mar 2018 12:34:42 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:47136 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751692AbeCZQem (ORCPT ); Mon, 26 Mar 2018 12:34:42 -0400 Received: from pps.filterd (m0098421.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w2QGI3wB127486 for ; Mon, 26 Mar 2018 12:34:41 -0400 Received: from e31.co.us.ibm.com (e31.co.us.ibm.com [32.97.110.149]) by mx0a-001b2d01.pphosted.com with ESMTP id 2gy48s8n0a-1 (version=TLSv1.2 cipher=AES256-SHA256 bits=256 verify=NOT) for ; Mon, 26 Mar 2018 12:34:41 -0400 Received: from localhost by e31.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 26 Mar 2018 10:34:40 -0600 Received: from b03cxnp08025.gho.boulder.ibm.com (9.17.130.17) by e31.co.us.ibm.com (192.168.1.131) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Mon, 26 Mar 2018 10:34:37 -0600 Received: from b03ledav003.gho.boulder.ibm.com (b03ledav003.gho.boulder.ibm.com [9.17.130.234]) by b03cxnp08025.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w2QGYbbs9306444; Mon, 26 Mar 2018 09:34:37 -0700 Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6896E6A03B; Mon, 26 Mar 2018 10:34:37 -0600 (MDT) Received: from p8tul1-build.aus.stglabs.ibm.com (unknown [9.3.141.206]) by b03ledav003.gho.boulder.ibm.com (Postfix) with ESMTP id CA7BF6A03C; Mon, 26 Mar 2018 10:34:36 -0600 (MDT) From: Uma Krishnan To: linux-scsi@vger.kernel.org, James Bottomley , "Martin K. Petersen" , "Matthew R. Ochs" , "Manoj N. Kumar" Cc: linuxppc-dev@lists.ozlabs.org, Andrew Donnellan , Frederic Barrat , Christophe Lombard Subject: [PATCH v3 31/41] cxlflash: Introduce object handle fop Date: Mon, 26 Mar 2018 11:34:35 -0500 X-Mailer: git-send-email 2.1.0 In-Reply-To: <1522081759-57431-1-git-send-email-ukrishn@linux.vnet.ibm.com> References: <1522081759-57431-1-git-send-email-ukrishn@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18032616-8235-0000-0000-00000D3793FA X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008748; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000255; SDB=6.01008740; UDB=6.00513807; IPR=6.00788022; MB=3.00020251; MTD=3.00000008; XFM=3.00000015; UTC=2018-03-26 16:34:38 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18032616-8236-0000-0000-00004037A59D Message-Id: <1522082075-58601-1-git-send-email-ukrishn@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2018-03-26_07:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1803260169 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP OCXL requires that AFUs use an opaque object handle to represent an AFU interrupt. The specification does not provide a common means to communicate the object handle to the AFU - each AFU must define this within the AFU specification. To support this model, the object handle must be passed back to the core driver as it manages the AFU specification (SISLite) for cxlflash. Note that for Power systems, the object handle is the effective address of the trigger page. Signed-off-by: Uma Krishnan Acked-by: Matthew R. Ochs --- drivers/scsi/cxlflash/backend.h | 1 + drivers/scsi/cxlflash/cxl_hw.c | 7 +++++++ drivers/scsi/cxlflash/ocxl_hw.c | 18 ++++++++++++++++++ 3 files changed, 26 insertions(+) diff --git a/drivers/scsi/cxlflash/backend.h b/drivers/scsi/cxlflash/backend.h index f675bcb..bcd8a6c 100644 --- a/drivers/scsi/cxlflash/backend.h +++ b/drivers/scsi/cxlflash/backend.h @@ -23,6 +23,7 @@ struct cxlflash_backend_ops { int (*map_afu_irq)(void *ctx_cookie, int num, irq_handler_t handler, void *cookie, char *name); void (*unmap_afu_irq)(void *ctx_cookie, int num, void *cookie); + u64 (*get_irq_objhndl)(void *ctx_cookie, int irq); int (*start_context)(void *ctx_cookie); int (*stop_context)(void *ctx_cookie); int (*afu_reset)(void *ctx_cookie); diff --git a/drivers/scsi/cxlflash/cxl_hw.c b/drivers/scsi/cxlflash/cxl_hw.c index a1d6d12..b42da88 100644 --- a/drivers/scsi/cxlflash/cxl_hw.c +++ b/drivers/scsi/cxlflash/cxl_hw.c @@ -49,6 +49,12 @@ static void cxlflash_unmap_afu_irq(void *ctx_cookie, int num, void *cookie) cxl_unmap_afu_irq(ctx_cookie, num, cookie); } +static u64 cxlflash_get_irq_objhndl(void *ctx_cookie, int irq) +{ + /* Dummy fop for cxl */ + return 0; +} + static int cxlflash_start_context(void *ctx_cookie) { return cxl_start_context(ctx_cookie, 0, NULL); @@ -153,6 +159,7 @@ const struct cxlflash_backend_ops cxlflash_cxl_ops = { .process_element = cxlflash_process_element, .map_afu_irq = cxlflash_map_afu_irq, .unmap_afu_irq = cxlflash_unmap_afu_irq, + .get_irq_objhndl = cxlflash_get_irq_objhndl, .start_context = cxlflash_start_context, .stop_context = cxlflash_stop_context, .afu_reset = cxlflash_afu_reset, diff --git a/drivers/scsi/cxlflash/ocxl_hw.c b/drivers/scsi/cxlflash/ocxl_hw.c index 4bbc1d1..f77f4d7 100644 --- a/drivers/scsi/cxlflash/ocxl_hw.c +++ b/drivers/scsi/cxlflash/ocxl_hw.c @@ -308,6 +308,23 @@ static void ocxlflash_unmap_afu_irq(void *ctx_cookie, int num, void *cookie) } /** + * ocxlflash_get_irq_objhndl() - get the object handle for an interrupt + * @ctx_cookie: Context associated with the interrupt. + * @irq: Interrupt number. + * + * Return: effective address of the mapped region + */ +static u64 ocxlflash_get_irq_objhndl(void *ctx_cookie, int irq) +{ + struct ocxlflash_context *ctx = ctx_cookie; + + if (irq < 0 || irq >= ctx->num_irqs) + return 0; + + return (__force u64)ctx->irqs[irq].vtrig; +} + +/** * start_context() - local routine to start a context * @ctx: Adapter context to be started. * @@ -1301,6 +1318,7 @@ const struct cxlflash_backend_ops cxlflash_ocxl_ops = { .process_element = ocxlflash_process_element, .map_afu_irq = ocxlflash_map_afu_irq, .unmap_afu_irq = ocxlflash_unmap_afu_irq, + .get_irq_objhndl = ocxlflash_get_irq_objhndl, .start_context = ocxlflash_start_context, .stop_context = ocxlflash_stop_context, .set_master = ocxlflash_set_master,