From owner-svn-src-stable-12@freebsd.org Wed Aug 14 23:31:54 2019 Return-Path: Delivered-To: svn-src-stable-12@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 98A6DBFC41; Wed, 14 Aug 2019 23:31:54 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4685T63cF2z49C9; Wed, 14 Aug 2019 23:31:54 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 5D1FE78F6; Wed, 14 Aug 2019 23:31:54 +0000 (UTC) (envelope-from jhb@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x7ENVswU087176; Wed, 14 Aug 2019 23:31:54 GMT (envelope-from jhb@FreeBSD.org) Received: (from jhb@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x7ENVs5I087175; Wed, 14 Aug 2019 23:31:54 GMT (envelope-from jhb@FreeBSD.org) Message-Id: <201908142331.x7ENVs5I087175@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: jhb set sender to jhb@FreeBSD.org using -f From: John Baldwin Date: Wed, 14 Aug 2019 23:31:54 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r351060 - in stable: 11/sys/amd64/vmm/io 12/sys/amd64/vmm/io X-SVN-Group: stable-12 X-SVN-Commit-Author: jhb X-SVN-Commit-Paths: in stable: 11/sys/amd64/vmm/io 12/sys/amd64/vmm/io X-SVN-Commit-Revision: 351060 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-12@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for only the 12-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 14 Aug 2019 23:31:54 -0000 Author: jhb Date: Wed Aug 14 23:31:53 2019 New Revision: 351060 URL: https://svnweb.freebsd.org/changeset/base/351060 Log: MFC 348695: Support MSI-X for passthrough devices with a separate PBA BAR. pci_alloc_msix() requires both the table and PBA BARs to be allocated by the driver. ppt was only allocating the table BAR so would fail for devices with the PBA in a separate BAR. Fix this by allocating the PBA BAR before pci_alloc_msix() if it is stored in a separate BAR. While here, release BARs after calling pci_release_msi() instead of before. Also, don't call bus_teardown_intr() in error handling code if bus_setup_intr() has just failed. Modified: stable/12/sys/amd64/vmm/io/ppt.c Directory Properties: stable/12/ (props changed) Changes in other areas also in this revision: Modified: stable/11/sys/amd64/vmm/io/ppt.c Directory Properties: stable/11/ (props changed) Modified: stable/12/sys/amd64/vmm/io/ppt.c ============================================================================== --- stable/12/sys/amd64/vmm/io/ppt.c Wed Aug 14 23:28:43 2019 (r351059) +++ stable/12/sys/amd64/vmm/io/ppt.c Wed Aug 14 23:31:53 2019 (r351060) @@ -102,7 +102,9 @@ struct pptdev { int num_msgs; int startrid; int msix_table_rid; + int msix_pba_rid; struct resource *msix_table_res; + struct resource *msix_pba_res; struct resource **res; void **cookie; struct pptintr_arg *arg; @@ -292,6 +294,12 @@ ppt_teardown_msix(struct pptdev *ppt) for (i = 0; i < ppt->msix.num_msgs; i++) ppt_teardown_msix_intr(ppt, i); + free(ppt->msix.res, M_PPTMSIX); + free(ppt->msix.cookie, M_PPTMSIX); + free(ppt->msix.arg, M_PPTMSIX); + + pci_release_msi(ppt->dev); + if (ppt->msix.msix_table_res) { bus_release_resource(ppt->dev, SYS_RES_MEMORY, ppt->msix.msix_table_rid, @@ -299,13 +307,14 @@ ppt_teardown_msix(struct pptdev *ppt) ppt->msix.msix_table_res = NULL; ppt->msix.msix_table_rid = 0; } + if (ppt->msix.msix_pba_res) { + bus_release_resource(ppt->dev, SYS_RES_MEMORY, + ppt->msix.msix_pba_rid, + ppt->msix.msix_pba_res); + ppt->msix.msix_pba_res = NULL; + ppt->msix.msix_pba_rid = 0; + } - free(ppt->msix.res, M_PPTMSIX); - free(ppt->msix.cookie, M_PPTMSIX); - free(ppt->msix.arg, M_PPTMSIX); - - pci_release_msi(ppt->dev); - ppt->msix.num_msgs = 0; } @@ -634,6 +643,19 @@ ppt_setup_msix(struct vm *vm, int vcpu, int bus, int s } ppt->msix.msix_table_rid = rid; + if (dinfo->cfg.msix.msix_table_bar != + dinfo->cfg.msix.msix_pba_bar) { + rid = dinfo->cfg.msix.msix_pba_bar; + ppt->msix.msix_pba_res = bus_alloc_resource_any( + ppt->dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); + + if (ppt->msix.msix_pba_res == NULL) { + ppt_teardown_msix(ppt); + return (ENOSPC); + } + ppt->msix.msix_pba_rid = rid; + } + alloced = numvec; error = pci_alloc_msix(ppt->dev, &alloced); if (error || alloced != numvec) { @@ -665,7 +687,6 @@ ppt_setup_msix(struct vm *vm, int vcpu, int bus, int s &ppt->msix.cookie[idx]); if (error != 0) { - bus_teardown_intr(ppt->dev, ppt->msix.res[idx], ppt->msix.cookie[idx]); bus_release_resource(ppt->dev, SYS_RES_IRQ, rid, ppt->msix.res[idx]); ppt->msix.cookie[idx] = NULL; ppt->msix.res[idx] = NULL;