From nobody Mon Feb 9 09:10:12 2026 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 443BC33ADB1; Fri, 19 Dec 2025 17:42:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.18 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766166134; cv=none; b=L7FK2yKm5VwtGij9aWNN4HAVGQUY9m5mvrNaE/ij/mswmNKbJeCsig1PRFdvHURBNDfasyugMgGIPYXoZmnwIc7dxBokXwZIUg8lkzoHFcTLatHWWaa8mOHgAFyxqkCgC179s1iEYfES0M2wFBW9SJqYbUwqybB7i5RZwdpfVLk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766166134; c=relaxed/simple; bh=jbV7bMaiMlBpNb80xOxh5qKE5av1K1eirvSgZubtPoI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=dGqDqy9a9FEujtmTv1tmkhFaET6L/AEwCE16ChAxOsYlv+vNqEos3ef564M2HOOrBKx1wUTHN40NzI6iTujG5yyW/dUqSUCiC2q2fMS2qHSo5Yo/g0iC1mld1trB9c3Tjt96/AF1vj9TefuhR7abFGrCOOePBDrR+8kR0bF4te0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=YpqXve16; arc=none smtp.client-ip=198.175.65.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="YpqXve16" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1766166133; x=1797702133; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=jbV7bMaiMlBpNb80xOxh5qKE5av1K1eirvSgZubtPoI=; b=YpqXve16+KAT8VEs/kjSjwWHF3RKT7ZtVty5K/PQvNYuerZo9v6biZng Uj8B4x1FiGFihKBJRtchoh9BOEjvVoNKTixMiDAY8eABYuoN1AC4jtEWX YYEwdQQW1bgzUgzC2xBtcTASntxxrcU2zwOs41O5JIFu6NcrRcRIpSFPd cl00V7sHam6n8ES4wMYvYymIysLLu66kT0ZEIEoa+N2/CbKf6YkbF6NSY +zu0fO3Dcqmrf6YbUkOJmXpy9trimFV9ckxgQnZuJAtxB5VXQ8lQI03/I tVOjsuCZ9Csw/Eebg/T59KROHlWvaax+V3VqYYymwHbg3AGU7ygEA3MjU A==; X-CSE-ConnectionGUID: IhyP7UUDSJKJPqFGPuTiCQ== X-CSE-MsgGUID: doPBobEWSPOrfzcJIPivCA== X-IronPort-AV: E=McAfee;i="6800,10657,11647"; a="68173903" X-IronPort-AV: E=Sophos;i="6.21,161,1763452800"; d="scan'208";a="68173903" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by orvoesa110.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Dec 2025 09:42:12 -0800 X-CSE-ConnectionGUID: CGGMlx9IQVC1/De4Q6CcyQ== X-CSE-MsgGUID: R0NwvNluTtuu0bEiS/0r8g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,161,1763452800"; d="scan'208";a="229597867" Received: from ijarvine-mobl1.ger.corp.intel.com (HELO localhost) ([10.245.245.61]) by orviesa002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Dec 2025 09:42:09 -0800 From: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= To: linux-pci@vger.kernel.org, Bjorn Helgaas , Dominik Brodowski , linux-kernel@vger.kernel.org Cc: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= Subject: [PATCH 10/23] PCI: Add pci_resource_is_bridge_win() Date: Fri, 19 Dec 2025 19:40:23 +0200 Message-Id: <20251219174036.16738-11-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20251219174036.16738-1-ilpo.jarvinen@linux.intel.com> References: <20251219174036.16738-1-ilpo.jarvinen@linux.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Add pci_resource_is_bridge_win() helper to simplify checking if the resource is a bridge window. Signed-off-by: Ilpo J=C3=A4rvinen --- drivers/pci/pci-sysfs.c | 2 +- drivers/pci/pci.h | 5 +++++ drivers/pci/setup-bus.c | 7 +++---- drivers/pci/setup-res.c | 2 +- 4 files changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index c2df915ad2d2..363187ba4f56 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -181,7 +181,7 @@ static ssize_t resource_show(struct device *dev, struct= device_attribute *attr, struct resource zerores =3D {}; =20 /* For backwards compatibility */ - if (i >=3D PCI_BRIDGE_RESOURCES && i <=3D PCI_BRIDGE_RESOURCE_END && + if (pci_resource_is_bridge_win(i) && res->flags & (IORESOURCE_UNSET | IORESOURCE_DISABLED)) res =3D &zerores; =20 diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 0e67014aa001..c27144af550f 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -452,6 +452,11 @@ void pci_walk_bus_locked(struct pci_bus *top, =20 const char *pci_resource_name(struct pci_dev *dev, unsigned int i); bool pci_resource_is_optional(const struct pci_dev *dev, int resno); +static inline bool pci_resource_is_bridge_win(int resno) +{ + return resno >=3D PCI_BRIDGE_RESOURCES && + resno <=3D PCI_BRIDGE_RESOURCE_END; +} =20 /** * pci_resource_num - Reverse lookup resource number from device resources diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 41417084ddf8..403139d8c86a 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -303,8 +303,7 @@ static bool pdev_resource_assignable(struct pci_dev *de= v, struct resource *res) if (!res->flags) return false; =20 - if (idx >=3D PCI_BRIDGE_RESOURCES && idx <=3D PCI_BRIDGE_RESOURCE_END && - res->flags & IORESOURCE_DISABLED) + if (pci_resource_is_bridge_win(idx) && res->flags & IORESOURCE_DISABLED) return false; =20 return true; @@ -389,7 +388,7 @@ static inline void reset_resource(struct pci_dev *dev, = struct resource *res) { int idx =3D pci_resource_num(dev, res); =20 - if (idx >=3D PCI_BRIDGE_RESOURCES && idx <=3D PCI_BRIDGE_RESOURCE_END) { + if (pci_resource_is_bridge_win(idx)) { res->flags |=3D IORESOURCE_UNSET; return; } @@ -985,7 +984,7 @@ int pci_claim_bridge_resource(struct pci_dev *bridge, i= nt i) { int ret =3D -EINVAL; =20 - if (i < PCI_BRIDGE_RESOURCES || i > PCI_BRIDGE_RESOURCE_END) + if (!pci_resource_is_bridge_win(i)) return 0; =20 if (pci_claim_resource(bridge, i) =3D=3D 0) diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c index e5fcadfc58b0..bb2aef373d6f 100644 --- a/drivers/pci/setup-res.c +++ b/drivers/pci/setup-res.c @@ -359,7 +359,7 @@ int pci_assign_resource(struct pci_dev *dev, int resno) =20 res->flags &=3D ~IORESOURCE_UNSET; res->flags &=3D ~IORESOURCE_STARTALIGN; - if (resno >=3D PCI_BRIDGE_RESOURCES && resno <=3D PCI_BRIDGE_RESOURCE_END) + if (pci_resource_is_bridge_win(resno)) res->flags &=3D ~IORESOURCE_DISABLED; =20 pci_info(dev, "%s %pR: assigned\n", res_name, res); --=20 2.39.5