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Thu, 29 Oct 2026 16:38:50 +0000 (UTC) Received: from jtornosm-thinkpadp1gen7.rmtes.csb (headnet04.pony-001.prod.iad2.dc.redhat.com [10.2.32.116]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 57B161955F0A; Thu, 29 Oct 2026 16:38:46 +0000 (UTC) From: Jose Ignacio Tornos Martinez To: jgg@ziepe.ca, alex@shazbot.org, pbonzini@redhat.com, seanjc@google.com, bhelgaas@google.com, jjohnson@kernel.org Cc: johannes@sipsolutions.net, mani@kernel.org, lpieralisi@kernel.org, kwilczynski@kernel.org, robh@kernel.org, vkuznets@redhat.com, kevin.tian@intel.com, linux-pci@vger.kernel.org, kvm@vger.kernel.org, linux-wireless@vger.kernel.org, ath11k@lists.infradead.org, ath12k@lists.infradead.org, linux-kernel@vger.kernel.org, Jose Ignacio Tornos Martinez Subject: [PATCH v3 8/8] PCI: add QCN9274 to reset quirks and KVM MSI domain Date: Thu, 29 Oct 2026 17:37:13 +0100 Message-ID: <20261029163713.1366077-9-jtornosm@redhat.com> In-Reply-To: <20261029163713.1366077-1-jtornosm@redhat.com> References: <20261029163713.1366077-1-jtornosm@redhat.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 In order to have Qualcomm QCN9274 (PCI ID 17cb:1109) completely operational from VM environments, add to: 1. quirk_no_bus_reset: Disable broken bus reset, as with WCN6855 and WCN7850. 2. pci_dev_specific_reset_methods: Use the existing reset_qualcomm_wlan function. Unlike WCN7850, the QCN9274 is not initialized at all without a valid device-specific reset method. 3. kvm_msi_devids in pci-kvm-msi: Enable KVM MSI domain support for VFIO passthrough to VMs. Signed-off-by: Jose Ignacio Tornos Martinez --- v3: new v2: https://lore.kernel.org/all/20261011074514.515894-1-jtornosm@redhat.com/ drivers/pci/controller/pci-kvm-msi.c | 1 + drivers/pci/quirks.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/drivers/pci/controller/pci-kvm-msi.c b/drivers/pci/controller/pci-kvm-msi.c index e935e5d9846d..b008e73fedce 100644 --- a/drivers/pci/controller/pci-kvm-msi.c +++ b/drivers/pci/controller/pci-kvm-msi.c @@ -336,6 +336,7 @@ static int kvm_msi_create_domain(struct pci_dev *ref_dev) static const struct pci_device_id kvm_msi_devids[] = { { PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x1103) }, /* WCN6855 */ { PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x1107) }, /* WCN7850 */ + { PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x1109) }, /* QCN9274 */ { } }; diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 7f1f47ea2ee4..89d82675a76c 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3818,6 +3818,7 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0034, quirk_no_bus_reset); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003e, quirk_no_bus_reset); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_QCOM, 0x1103, quirk_no_bus_reset); /* WCN6855 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_QCOM, 0x1107, quirk_no_bus_reset); /* WCN7850 */ +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_QCOM, 0x1109, quirk_no_bus_reset); /* QCN9274 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_QCOM, 0x0308, quirk_no_bus_reset); /* SDX62/SDX65 */ /* @@ -4398,6 +4399,7 @@ static const struct pci_dev_reset_methods pci_dev_reset_methods[] = { { PCI_VENDOR_ID_QCOM, 0x0308, reset_qualcomm_modem }, /* SDX62/SDX65 modems */ { PCI_VENDOR_ID_QCOM, 0x1103, reset_qualcomm_wlan }, /* WCN6855 WLAN */ { PCI_VENDOR_ID_QCOM, 0x1107, reset_qualcomm_wlan }, /* WCN7850 WLAN */ + { PCI_VENDOR_ID_QCOM, 0x1109, reset_qualcomm_wlan }, /* QCN9274 WLAN */ { 0 } }; -- 2.56.0