From nobody Wed Dec 17 10:50:30 2025 Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.3]) by smtp.subspace.kernel.org (Postfix) with ESMTP id A1C2C1E8348; Fri, 21 Mar 2025 04:05:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.3 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742529911; cv=none; b=jj0AncpoMdAmvUTy4ZKvPB1iWyL/iQOs4S1jIvs7k3rqysGZnUIAJE6+FB+QOX6ZTO4Wa2r8+SdkUdy0NwNr9LYOWHTrpO3WyTHdzNUgeNnj5qDD7Ivlvw5VNsvGztucmdgsOxuC7lDhTi1hKpFJVLTbvxA1uQRFoUvi1e1dDPY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742529911; c=relaxed/simple; bh=8wrzbj5ssYulxdONn+5PAZojqiM++bNYF+2hBtQlB8o=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=tDZsinh7LcaetfcJgpNoSdQuhAuqIqyseDabg4SZ/93tDhXDhky3MB7SZ7MohCN4Ewwb6ePZw0OzG3Ky1abCvQa/kKqLwRQKzWkF/WdHJcp/Q4Xf0oKLRkqIFAX5ernfmwfyn4v/G1PqFhZd4bCucNSKknjF2WyYC3bR2F0j4Oo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=qRqQepu6; arc=none smtp.client-ip=117.135.210.3 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="qRqQepu6" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-Id:MIME-Version; bh=HzGL2 1t50mabge27U9hki9qzqcC6EARkMmCFBnRtxd0=; b=qRqQepu6tF/6GbNOY8tRk g9Q6iQ3Sc1BMeiEwuSTOyTGW+veAuxs7ee5x7t7CRuZ88DksONokBqNeBATE+GiF vvH7TJzxA/Hxvdap2qdIoCAEYX9DzUDI2FmYWIp2u5A/wnD5RVP4+ThiOrnYSVPw mNqFOo7V85ppGmAC5ZctLA= Received: from localhost.localdomain (unknown []) by gzga-smtp-mtada-g1-0 (Coremail) with SMTP id _____wD3Hxsw5dxnbYNpAw--.34788S5; Fri, 21 Mar 2025 12:04:04 +0800 (CST) From: Hans Zhang <18255117159@163.com> To: lpieralisi@kernel.org Cc: kw@linux.com, manivannan.sadhasivam@linaro.org, robh@kernel.org, bhelgaas@google.com, jingoohan1@gmail.com, thomas.richard@bootlin.com, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Hans Zhang <18255117159@163.com> Subject: [v3 3/4] PCI: cadence: Add configuration space capability search API Date: Fri, 21 Mar 2025 12:03:57 +0800 Message-Id: <20250321040358.360755-4-18255117159@163.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250321040358.360755-1-18255117159@163.com> References: <20250321040358.360755-1-18255117159@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: _____wD3Hxsw5dxnbYNpAw--.34788S5 X-Coremail-Antispam: 1Uf129KBjvJXoWxJry7AFy5Cr17ZrWUCr1fCrg_yoW8ur17pF yDGFyfC3WrJrW3u3Z3Za45XF13JF9Yk347t39ak34fZF17CryUGF12gFyrtFZxKrZrWr17 XryDtFykGrn3trUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07UopBDUUUUU= X-CM-SenderInfo: rpryjkyvrrlimvzbiqqrwthudrp/xtbBDxUXo2fc32Nz2QAGsF Content-Type: text/plain; charset="utf-8" Add configuration space capability search API using struct cdns_pcie* pointer. Signed-off-by: Hans Zhang <18255117159@163.com> --- drivers/pci/controller/cadence/pcie-cadence.c | 25 +++++++++++++++++++ drivers/pci/controller/cadence/pcie-cadence.h | 3 +++ 2 files changed, 28 insertions(+) diff --git a/drivers/pci/controller/cadence/pcie-cadence.c b/drivers/pci/co= ntroller/cadence/pcie-cadence.c index 204e045aed8c..ea9bfbe76cd6 100644 --- a/drivers/pci/controller/cadence/pcie-cadence.c +++ b/drivers/pci/controller/cadence/pcie-cadence.c @@ -8,6 +8,31 @@ =20 #include "pcie-cadence.h" =20 +static u32 cdns_pcie_read_cfg(void *priv, int where, int size) +{ + struct cdns_pcie *pcie =3D priv; + u32 val; + + if (size =3D=3D 4) + val =3D readl(pcie->reg_base + where); + else if (size =3D=3D 2) + val =3D readw(pcie->reg_base + where); + else if (size =3D=3D 1) + val =3D readb(pcie->reg_base + where); + + return val; +} + +u8 cdns_pcie_find_capability(struct cdns_pcie *pcie, u8 cap) +{ + return pci_generic_find_capability(pcie, cdns_pcie_read_cfg, cap); +} + +u16 cdns_pcie_find_ext_capability(struct cdns_pcie *pcie, u8 cap) +{ + return pci_generic_find_ext_capability(pcie, cdns_pcie_read_cfg, cap); +} + void cdns_pcie_detect_quiet_min_delay_set(struct cdns_pcie *pcie) { u32 delay =3D 0x3; diff --git a/drivers/pci/controller/cadence/pcie-cadence.h b/drivers/pci/co= ntroller/cadence/pcie-cadence.h index f5eeff834ec1..6f4981fccb94 100644 --- a/drivers/pci/controller/cadence/pcie-cadence.h +++ b/drivers/pci/controller/cadence/pcie-cadence.h @@ -557,6 +557,9 @@ static inline int cdns_pcie_ep_setup(struct cdns_pcie_e= p *ep) } #endif =20 +u8 cdns_pcie_find_capability(struct cdns_pcie *pcie, u8 cap); +u16 cdns_pcie_find_ext_capability(struct cdns_pcie *pcie, u8 cap); + void cdns_pcie_detect_quiet_min_delay_set(struct cdns_pcie *pcie); =20 void cdns_pcie_set_outbound_region(struct cdns_pcie *pcie, u8 busnr, u8 fn, --=20 2.25.1