From owner-svn-src-stable@freebsd.org Wed Jul 3 18:29:19 2019 Return-Path: Delivered-To: svn-src-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 06D9115DC954; Wed, 3 Jul 2019 18:29:19 +0000 (UTC) (envelope-from hselasky@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 9F78E88D41; Wed, 3 Jul 2019 18:29:18 +0000 (UTC) (envelope-from hselasky@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 79A24F97B; Wed, 3 Jul 2019 18:29:18 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x63ITIO7029989; Wed, 3 Jul 2019 18:29:18 GMT (envelope-from hselasky@FreeBSD.org) Received: (from hselasky@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x63ITIai029988; Wed, 3 Jul 2019 18:29:18 GMT (envelope-from hselasky@FreeBSD.org) Message-Id: <201907031829.x63ITIai029988@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: hselasky set sender to hselasky@FreeBSD.org using -f From: Hans Petter Selasky Date: Wed, 3 Jul 2019 18:29:18 +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: r349670 - stable/12/sys/dev/pci X-SVN-Group: stable-12 X-SVN-Commit-Author: hselasky X-SVN-Commit-Paths: stable/12/sys/dev/pci X-SVN-Commit-Revision: 349670 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 9F78E88D41 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.96 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.998,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; NEURAL_HAM_SHORT(-0.96)[-0.958,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Jul 2019 18:29:19 -0000 Author: hselasky Date: Wed Jul 3 18:29:18 2019 New Revision: 349670 URL: https://svnweb.freebsd.org/changeset/base/349670 Log: MFC r349522: Need to apply the PCIM_BAR_MEM_BASE mask to the physical memory address before returning it to the user. Some of the least significant bits have special meaning and should be masked away. Discussed with: kib@ Sponsored by: Mellanox Technologies Modified: stable/12/sys/dev/pci/pci_user.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/dev/pci/pci_user.c ============================================================================== --- stable/12/sys/dev/pci/pci_user.c Wed Jul 3 18:26:07 2019 (r349669) +++ stable/12/sys/dev/pci/pci_user.c Wed Jul 3 18:29:18 2019 (r349670) @@ -855,6 +855,7 @@ pci_bar_mmap(device_t pcidev, struct pci_bar_mmap *pbm struct thread *td; struct sglist *sg; struct pci_map *pm; + vm_paddr_t membase; vm_paddr_t pbase; vm_size_t plen; vm_offset_t addr; @@ -877,8 +878,9 @@ pci_bar_mmap(device_t pcidev, struct pci_bar_mmap *pbm return (EBUSY); /* XXXKIB enable if _ACTIVATE */ if (!PCI_BAR_MEM(pm->pm_value)) return (EIO); - pbase = trunc_page(pm->pm_value); - plen = round_page(pm->pm_value + ((pci_addr_t)1 << pm->pm_size)) - + membase = pm->pm_value & PCIM_BAR_MEM_BASE; + pbase = trunc_page(membase); + plen = round_page(membase + ((pci_addr_t)1 << pm->pm_size)) - pbase; prot = VM_PROT_READ | (((pbm->pbm_flags & PCIIO_BAR_MMAP_RW) != 0) ? VM_PROT_WRITE : 0); @@ -910,7 +912,7 @@ pci_bar_mmap(device_t pcidev, struct pci_bar_mmap *pbm } pbm->pbm_map_base = (void *)addr; pbm->pbm_map_length = plen; - pbm->pbm_bar_off = pm->pm_value - pbase; + pbm->pbm_bar_off = membase - pbase; pbm->pbm_bar_length = (pci_addr_t)1 << pm->pm_size; out: