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(unknown []) by gzga-smtp-mtada-g0-4 (Coremail) with SMTP id _____wAHyuPNi9NplrBRDg--.19284S3; Mon, 06 Apr 2026 18:32:48 +0800 (CST) From: Hans Zhang <18255117159@163.com> To: bhelgaas@google.com, lpieralisi@kernel.org, kwilczynski@kernel.org, mani@kernel.org, hans.zhang@cixtech.com Cc: robh@kernel.org, mpillai@cadence.com, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Hans Zhang <18255117159@163.com> Subject: [PATCH v3 1/2] PCI: cadence: Add HPA architecture flag Date: Mon, 6 Apr 2026 18:32:36 +0800 Message-Id: <20260406103237.1203127-2-18255117159@163.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260406103237.1203127-1-18255117159@163.com> References: <20260406103237.1203127-1-18255117159@163.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: _____wAHyuPNi9NplrBRDg--.19284S3 X-Coremail-Antispam: 1Uf129KBjvJXoW7AFy3ArWfuw4Dtr4kXr4UXFb_yoW8Zr13pa yDGFySk3WfXF45uan5Z3W5Cr1avFnxZasrKws09w1fCF13CrWUGFy7WFyrJF9xKrW7ur1x ZF1DtasrJFsIyrUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0pR0Ap5UUUUU= X-CM-SenderInfo: rpryjkyvrrlimvzbiqqrwthudrp/xtbCxBBmCmnTi9CITwAA3e Content-Type: text/plain; charset="utf-8" Add a boolean flag 'is_hpa' to the cdns_pcie structure to indicate that the controller is part of a Heterogeneous Processor Architecture (HPA) system. This flag will be used by subsequent patches to handle HPA-specific register layouts and behaviors. Signed-off-by: Hans Zhang <18255117159@163.com> --- drivers/pci/controller/cadence/pci-sky1.c | 1 + drivers/pci/controller/cadence/pcie-cadence.h | 2 ++ 2 files changed, 3 insertions(+) diff --git a/drivers/pci/controller/cadence/pci-sky1.c b/drivers/pci/contro= ller/cadence/pci-sky1.c index cd55c64e58a9..e1f4a98e2ab6 100644 --- a/drivers/pci/controller/cadence/pci-sky1.c +++ b/drivers/pci/controller/cadence/pci-sky1.c @@ -174,6 +174,7 @@ static int sky1_pcie_probe(struct platform_device *pdev) cdns_pcie->reg_base =3D pcie->reg_base; cdns_pcie->msg_res =3D pcie->msg_res; cdns_pcie->is_rc =3D true; + cdns_pcie->is_hpa =3D true; =20 reg_off =3D devm_kzalloc(dev, sizeof(*reg_off), GFP_KERNEL); if (!reg_off) { diff --git a/drivers/pci/controller/cadence/pcie-cadence.h b/drivers/pci/co= ntroller/cadence/pcie-cadence.h index 443033c607d7..c8cb19f7622f 100644 --- a/drivers/pci/controller/cadence/pcie-cadence.h +++ b/drivers/pci/controller/cadence/pcie-cadence.h @@ -80,6 +80,7 @@ struct cdns_plat_pcie_of_data { * @msg_res: Region for send message to map PCI accesses * @dev: PCIe controller * @is_rc: tell whether the PCIe controller mode is Root Complex or Endpoi= nt. + * @is_hpa: indicates if the architecture is HPA * @phy_count: number of supported PHY devices * @phy: list of pointers to specific PHY control blocks * @link: list of pointers to corresponding device link representations @@ -93,6 +94,7 @@ struct cdns_pcie { struct resource *msg_res; struct device *dev; bool is_rc; + bool is_hpa; int phy_count; struct phy **phy; struct device_link **link; --=20 2.34.1