Date: Wed, 17 Mar 2021 12:50:22 GMT From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 1acf24a044aa - main - Implement pci_get_relaxed_ordering_enabled() helper function. Message-ID: <202103171250.12HCoMaD088119@gitrepo.freebsd.org>
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The branch main has been updated by hselasky: URL: https://cgit.FreeBSD.org/src/commit/?id=1acf24a044aaa0391c61af4abe7e018c3bf8a37c commit 1acf24a044aaa0391c61af4abe7e018c3bf8a37c Author: Hans Petter Selasky <hselasky@FreeBSD.org> AuthorDate: 2021-03-16 15:06:42 +0000 Commit: Hans Petter Selasky <hselasky@FreeBSD.org> CommitDate: 2021-03-17 12:48:04 +0000 Implement pci_get_relaxed_ordering_enabled() helper function. Discussed with: kib@ MFC after: 1 week Sponsored by: Mellanox Technologies // NVIDIA Networking --- sys/dev/pci/pci.c | 15 +++++++++++++++ sys/dev/pci/pcivar.h | 1 + 2 files changed, 16 insertions(+) diff --git a/sys/dev/pci/pci.c b/sys/dev/pci/pci.c index 1ca128a48ad0..d85ce5baa7bc 100644 --- a/sys/dev/pci/pci.c +++ b/sys/dev/pci/pci.c @@ -2182,6 +2182,21 @@ pci_ht_map_msi(device_t dev, uint64_t addr) } } +int +pci_get_relaxed_ordering_enabled(device_t dev) +{ + struct pci_devinfo *dinfo = device_get_ivars(dev); + int cap; + uint16_t val; + + cap = dinfo->cfg.pcie.pcie_location; + if (cap == 0) + return (0); + val = pci_read_config(dev, cap + PCIER_DEVICE_CTL, 2); + val &= PCIEM_CTL_RELAXED_ORD_ENABLE; + return (val != 0); +} + int pci_get_max_payload(device_t dev) { diff --git a/sys/dev/pci/pcivar.h b/sys/dev/pci/pcivar.h index 0f04ca8f623c..74aa704635f7 100644 --- a/sys/dev/pci/pcivar.h +++ b/sys/dev/pci/pcivar.h @@ -677,6 +677,7 @@ int pci_msix_device_blacklisted(device_t dev); void pci_ht_map_msi(device_t dev, uint64_t addr); device_t pci_find_pcie_root_port(device_t dev); +int pci_get_relaxed_ordering_enabled(device_t dev); int pci_get_max_payload(device_t dev); int pci_get_max_read_req(device_t dev); void pci_restore_state(device_t dev);
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