{"id":805264,"url":"http://patchwork.ozlabs.org/api/1.2/patches/805264/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/1503556688-15412-7-git-send-email-sukadev@linux.vnet.ibm.com/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/1.2/projects/2/?format=json","name":"Linux PPC development","link_name":"linuxppc-dev","list_id":"linuxppc-dev.lists.ozlabs.org","list_email":"linuxppc-dev@lists.ozlabs.org","web_url":"https://github.com/linuxppc/wiki/wiki","scm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git","webscm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/","list_archive_url":"https://lore.kernel.org/linuxppc-dev/","list_archive_url_format":"https://lore.kernel.org/linuxppc-dev/{}/","commit_url_format":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}"},"msgid":"<1503556688-15412-7-git-send-email-sukadev@linux.vnet.ibm.com>","list_archive_url":"https://lore.kernel.org/linuxppc-dev/1503556688-15412-7-git-send-email-sukadev@linux.vnet.ibm.com/","date":"2017-08-24T06:38:02","name":"[v7,06/12] powerpc/vas: Define helpers to alloc/free windows","commit_ref":null,"pull_url":null,"state":"changes-requested","archived":false,"hash":"ede5abdcbf20ac779da127700f2d317dccb278e4","submitter":{"id":984,"url":"http://patchwork.ozlabs.org/api/1.2/people/984/?format=json","name":"Sukadev Bhattiprolu","email":"sukadev@linux.vnet.ibm.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/1503556688-15412-7-git-send-email-sukadev@linux.vnet.ibm.com/mbox/","series":[],"comments":"http://patchwork.ozlabs.org/api/patches/805264/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/805264/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":["patchwork-incoming@ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Delivered-To":["patchwork-incoming@ozlabs.org","linuxppc-dev@lists.ozlabs.org","linuxppc-dev@ozlabs.org"],"Received":["from lists.ozlabs.org (lists.ozlabs.org [103.22.144.68])\n\t(using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xdFK94PTTz9ryk\n\tfor ;\n\tThu, 24 Aug 2017 16:49:49 +1000 (AEST)","from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 3xdFK93Vp8zDrYX\n\tfor ;\n\tThu, 24 Aug 2017 16:49:49 +1000 (AEST)","from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2])\n\t(using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 3xdF4C0fDRzDrK8\n\tfor ;\n\tThu, 24 Aug 2017 16:38:35 +1000 (AEST)","from ozlabs.org (ozlabs.org [IPv6:2401:3900:2:1::2])\n\tby bilbo.ozlabs.org (Postfix) with ESMTP id 3xdF4B4sdMz8w2H\n\tfor ;\n\tThu, 24 Aug 2017 16:38:34 +1000 (AEST)","by ozlabs.org (Postfix)\n\tid 3xdF4B3scXz9t3H; Thu, 24 Aug 2017 16:38:34 +1000 (AEST)","from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com\n\t[148.163.158.5])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256\n\tbits)) (No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xdF495vR1z9t3f\n\tfor ; Thu, 24 Aug 2017 16:38:33 +1000 (AEST)","from pps.filterd (m0098421.ppops.net [127.0.0.1])\n\tby mx0a-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id\n\tv7O6bMbC052896\n\tfor ; Thu, 24 Aug 2017 02:38:31 -0400","from e11.ny.us.ibm.com (e11.ny.us.ibm.com [129.33.205.201])\n\tby mx0a-001b2d01.pphosted.com with ESMTP id 2chspjr2km-1\n\t(version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT)\n\tfor ; Thu, 24 Aug 2017 02:38:31 -0400","from localhost\n\tby e11.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use\n\tOnly! Violators will be prosecuted\n\tfor from ;\n\tThu, 24 Aug 2017 02:38:31 -0400","from b01cxnp23034.gho.pok.ibm.com (9.57.198.29)\n\tby e11.ny.us.ibm.com (146.89.104.198) with IBM ESMTP SMTP Gateway:\n\tAuthorized Use Only! Violators will be prosecuted; \n\tThu, 24 Aug 2017 02:38:27 -0400","from b01ledav002.gho.pok.ibm.com (b01ledav002.gho.pok.ibm.com\n\t[9.57.199.107])\n\tby b01cxnp23034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP\n\tid v7O6cRcb26149014; Thu, 24 Aug 2017 06:38:27 GMT","from b01ledav002.gho.pok.ibm.com (unknown [127.0.0.1])\n\tby IMSVA (Postfix) with ESMTP id C8AE9124037;\n\tThu, 24 Aug 2017 02:35:47 -0400 (EDT)","from suka-w540.usor.ibm.com (unknown [9.70.94.25])\n\tby b01ledav002.gho.pok.ibm.com (Postfix) with ESMTP id EFB01124035;\n\tThu, 24 Aug 2017 02:35:46 -0400 (EDT)"],"Authentication-Results":"ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=linux.vnet.ibm.com\n\t(client-ip=148.163.158.5; helo=mx0a-001b2d01.pphosted.com;\n\tenvelope-from=sukadev@linux.vnet.ibm.com; receiver=)","From":"Sukadev Bhattiprolu ","To":"Michael Ellerman ","Subject":"[PATCH v7 06/12] powerpc/vas: Define helpers to alloc/free windows","Date":"Wed, 23 Aug 2017 23:38:02 -0700","X-Mailer":"git-send-email 2.7.4","In-Reply-To":"<1503556688-15412-1-git-send-email-sukadev@linux.vnet.ibm.com>","References":"<1503556688-15412-1-git-send-email-sukadev@linux.vnet.ibm.com>","X-TM-AS-GCONF":"00","x-cbid":"17082406-2213-0000-0000-0000020E9246","X-IBM-SpamModules-Scores":"","X-IBM-SpamModules-Versions":"BY=3.00007601; HX=3.00000241; KW=3.00000007;\n\tPH=3.00000004; SC=3.00000224; SDB=6.00906836; UDB=6.00454554;\n\tIPR=6.00687034; \n\tBA=6.00005550; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009;\n\tZB=6.00000000; \n\tZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00016840;\n\tXFM=3.00000015; UTC=2017-08-24 06:38:29","X-IBM-AV-DETECTION":"SAVI=unused REMOTE=unused XFE=unused","x-cbparentid":"17082406-2214-0000-0000-00005751D6E0","Message-Id":"<1503556688-15412-7-git-send-email-sukadev@linux.vnet.ibm.com>","X-Proofpoint-Virus-Version":"vendor=fsecure engine=2.50.10432:, ,\n\tdefinitions=2017-08-24_03:, , signatures=0","X-Proofpoint-Spam-Details":"rule=outbound_notspam policy=outbound score=0\n\tspamscore=0 suspectscore=2\n\tmalwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam\n\tadjust=0 reason=mlx scancount=1 engine=8.0.1-1707230000\n\tdefinitions=main-1708240106","X-BeenThere":"linuxppc-dev@lists.ozlabs.org","X-Mailman-Version":"2.1.23","Precedence":"list","List-Id":"Linux on PowerPC Developers Mail List\n\t","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"stewart@linux.vnet.ibm.com, mikey@neuling.org, linuxppc-dev@ozlabs.org, \n\tlinux-kernel@vger.kernel.org, apopple@au1.ibm.com, oohall@gmail.com","Errors-To":"linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org","Sender":"\"Linuxppc-dev\"\n\t"},"content":"Define helpers to allocate/free VAS window objects. These will\nbe used in follow-on patches when opening/closing windows.\n\nSigned-off-by: Sukadev Bhattiprolu \n---\n arch/powerpc/platforms/powernv/vas-window.c | 70 +++++++++++++++++++++++++++++\n 1 file changed, 70 insertions(+)","diff":"diff --git a/arch/powerpc/platforms/powernv/vas-window.c b/arch/powerpc/platforms/powernv/vas-window.c\nindex 3a50d6a..9c12919 100644\n--- a/arch/powerpc/platforms/powernv/vas-window.c\n+++ b/arch/powerpc/platforms/powernv/vas-window.c\n@@ -490,6 +490,76 @@ int init_winctx_regs(struct vas_window *window, struct vas_winctx *winctx)\n \treturn 0;\n }\n \n+DEFINE_SPINLOCK(vas_ida_lock);\n+\n+void vas_release_window_id(struct ida *ida, int winid)\n+{\n+\tspin_lock(&vas_ida_lock);\n+\tida_remove(ida, winid);\n+\tspin_unlock(&vas_ida_lock);\n+}\n+\n+int vas_assign_window_id(struct ida *ida)\n+{\n+\tint rc, winid;\n+\n+\trc = ida_pre_get(ida, GFP_KERNEL);\n+\tif (!rc)\n+\t\treturn -EAGAIN;\n+\n+\tspin_lock(&vas_ida_lock);\n+\trc = ida_get_new_above(ida, 0, &winid);\n+\tspin_unlock(&vas_ida_lock);\n+\n+\tif (rc)\n+\t\treturn rc;\n+\n+\tif (winid > VAS_WINDOWS_PER_CHIP) {\n+\t\tpr_err(\"VAS: Too many (%d) open windows\\n\", winid);\n+\t\tvas_release_window_id(ida, winid);\n+\t\treturn -EAGAIN;\n+\t}\n+\n+\treturn winid;\n+}\n+\n+void vas_window_free(struct vas_window *window)\n+{\n+\tint winid = window->winid;\n+\tstruct vas_instance *vinst = window->vinst;\n+\n+\tunmap_winctx_mmio_bars(window);\n+\tkfree(window);\n+\n+\tvas_release_window_id(&vinst->ida, winid);\n+}\n+\n+struct vas_window *vas_window_alloc(struct vas_instance *vinst)\n+{\n+\tint winid;\n+\tstruct vas_window *window;\n+\n+\twinid = vas_assign_window_id(&vinst->ida);\n+\tif (winid < 0)\n+\t\treturn ERR_PTR(winid);\n+\n+\twindow = kzalloc(sizeof(*window), GFP_KERNEL);\n+\tif (!window)\n+\t\treturn ERR_PTR(-ENOMEM);\n+\n+\twindow->vinst = vinst;\n+\twindow->winid = winid;\n+\n+\tif (map_winctx_mmio_bars(window))\n+\t\tgoto out_free;\n+\n+\treturn window;\n+\n+out_free:\n+\tkfree(window);\n+\treturn ERR_PTR(-ENOMEM);\n+}\n+\n /* stub for now */\n int vas_win_close(struct vas_window *window)\n {\n","prefixes":["v7","06/12"]}