Date: Tue, 7 Sep 2021 12:09:39 GMT From: Jessica Clarke <jrtc27@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 215db69fbcb0 - stable/13 - pci_dw: Trim ATU windows bigger than 4GB Message-ID: <202109071209.187C9dmB087203@gitrepo.freebsd.org>
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The branch stable/13 has been updated by jrtc27: URL: https://cgit.FreeBSD.org/src/commit/?id=215db69fbcb0b5acc04fbd9cb858e91d36252a46 commit 215db69fbcb0b5acc04fbd9cb858e91d36252a46 Author: Wojciech Macek <wma@FreeBSD.org> AuthorDate: 2021-04-09 07:28:44 +0000 Commit: Jessica Clarke <jrtc27@FreeBSD.org> CommitDate: 2021-09-07 12:06:47 +0000 pci_dw: Trim ATU windows bigger than 4GB The size of the ATU MEM/IO windows is implicitly casted to uint32_t. Because of that some window sizes were silently demoted to 0 and ignored. Check the size if its too large, trim it to 4GB and print a warning message. Submitted by: Kornel Duleba <mindal@semihalf.com> Reviewed by: mw Obtained from: Semihalf Sponsored by: Marvell Differential revision: https://reviews.freebsd.org/D29625 (cherry picked from commit 243000b19f8b4ab104b584b2d16bc6aa9131c9b5) --- sys/dev/pci/pci_dw.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/sys/dev/pci/pci_dw.c b/sys/dev/pci/pci_dw.c index 161a68d2929d..f0aae5bf8418 100644 --- a/sys/dev/pci/pci_dw.c +++ b/sys/dev/pci/pci_dw.c @@ -342,6 +342,18 @@ pci_dw_decode_ranges(struct pci_dw_softc *sc, struct ofw_pci_range *ranges, " Not all required ranges are found in DT\n"); return (ENXIO); } + if (sc->io_range.size > UINT32_MAX) { + device_printf(sc->dev, + "ATU IO window size is too large. Up to 4GB windows " + "are supported, trimming window size to 4GB\n"); + sc->io_range.size = UINT32_MAX; + } + if (sc->mem_range.size > UINT32_MAX) { + device_printf(sc->dev, + "ATU MEM window size is too large. Up to 4GB windows " + "are supported, trimming window size to 4GB\n"); + sc->mem_range.size = UINT32_MAX; + } return (0); }
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