From nobody Wed Dec 17 10:46:23 2025 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.21]) (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 7141029AB1D; Sun, 28 Sep 2025 06:40:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.21 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759041620; cv=none; b=LmjZ0vgeTqosk4ijQqTpOmHN4efBRSrbMcxb+M4MRTXzq7e1rcf1MftrsODdrwm36YGtJQlJrA+0Q39RunLWNEX+4eJueawLqi/Tb7CLRNwzZcN6Lhg9YqHjyjC1BDS5/QU/iYNZdlJRBJwcM2ZEivBl8cVzaB6RAgFAVI1xmX4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759041620; c=relaxed/simple; bh=qsbwJQQL7BDBZsPlfUXxgitah970J+393ry2NZtZapg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=mMpQcHA8qEaxxMFRFGHe9j790NDXLIgz9jjKb/Wc9qb9YNmd643HC6faLhaTM/vdcPLsfbwDQXVPsHEFftgnXK5LjQLBLpoSA8Agvyg2Nkvelz4hV8wFp/nyeLQG2R3cRiR/ESBRqGLSDNDBV/7IcMn+pODfpREMSFiHshWMxgY= 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=XKkk89gD; arc=none smtp.client-ip=198.175.65.21 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="XKkk89gD" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1759041619; x=1790577619; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=qsbwJQQL7BDBZsPlfUXxgitah970J+393ry2NZtZapg=; b=XKkk89gDguWO6rxGSEABKKLPmJX+5ZW865WCCz6zqPA/W+eElh24oV3T JxBsZWrEtQRm3rrId61DlLZecOz+Sbmh6ICoCZQCwfNNrv7UfPGQLmXmk uDeexY0D3BJ9SJl1qRxWQkxZVoaDp8EwpIX1MiRtkuL7EuS+afiBgIL94 7uv7Ugx9GsBbN+CyI7gLGzAllwJor5CdFLphhuwaeQJ48LS2nFjDZdW5z pw4JiRwYZe/mICLlDHvD0m2skP5vFSalnsn1/rfbLidUCulCEqpXfIutT xf8+uLCgoEqG1GFMxuWfbufp68oTtsjlyW25tsbj7glFed9A5gOg0ctHE A==; X-CSE-ConnectionGUID: fZ/4rpKsR327BCPyhD5Y5Q== X-CSE-MsgGUID: Hay836/rS827KbdkvRwrxg== X-IronPort-AV: E=McAfee;i="6800,10657,11531"; a="61228531" X-IronPort-AV: E=Sophos;i="6.17,312,1747724400"; d="scan'208";a="61228531" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Sep 2025 23:40:18 -0700 X-CSE-ConnectionGUID: JkkdvK2bRP6cnrkTikKkXg== X-CSE-MsgGUID: 9vMjIjxQSc2Cp7nMKHeR8A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.18,299,1751266800"; d="scan'208";a="177088848" Received: from yilunxu-optiplex-7050.sh.intel.com ([10.239.159.165]) by orviesa006.jf.intel.com with ESMTP; 27 Sep 2025 23:40:15 -0700 From: Xu Yilun To: linux-coco@lists.linux.dev, linux-pci@vger.kernel.org, dan.j.williams@intel.com Cc: yilun.xu@intel.com, yilun.xu@linux.intel.com, baolu.lu@linux.intel.com, zhenzhong.duan@intel.com, aneesh.kumar@kernel.org, bhelgaas@google.com, aik@amd.com, linux-kernel@vger.kernel.org Subject: [PATCH 1/3] PCI/IDE: Add/export mini helpers for platform TSM drivers Date: Sun, 28 Sep 2025 14:27:54 +0800 Message-Id: <20250928062756.2188329-2-yilun.xu@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250928062756.2188329-1-yilun.xu@linux.intel.com> References: <20250928062756.2188329-1-yilun.xu@linux.intel.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 Content-Type: text/plain; charset="utf-8" These mini helpers are mainly for platform TSM drivers to setup root port side configuration. Root port side IDE settings may require platform specific firmware calls (e.g. TDX Connect [1]) so could not use pci_ide_stream_setup(), but may still share these mini helpers cause they also refer to definitions in IDE specification. [1]: https://lore.kernel.org/linux-coco/20250919142237.418648-28-dan.j.will= iams@intel.com/ Signed-off-by: Xu Yilun --- include/linux/pci-ide.h | 6 ++++++ drivers/pci/ide.c | 8 +++----- 2 files changed, 9 insertions(+), 5 deletions(-) diff --git a/include/linux/pci-ide.h b/include/linux/pci-ide.h index a30f9460b04a..5adbd8b81f65 100644 --- a/include/linux/pci-ide.h +++ b/include/linux/pci-ide.h @@ -6,6 +6,11 @@ #ifndef __PCI_IDE_H__ #define __PCI_IDE_H__ =20 +#define PREP_PCI_IDE_SEL_RID_2(base, domain) \ + (FIELD_PREP(PCI_IDE_SEL_RID_2_VALID, 1) | \ + FIELD_PREP(PCI_IDE_SEL_RID_2_BASE, (base)) | \ + FIELD_PREP(PCI_IDE_SEL_RID_2_SEG, (domain))) + enum pci_ide_partner_select { PCI_IDE_EP, PCI_IDE_RP, @@ -61,6 +66,7 @@ struct pci_ide { struct tsm_dev *tsm_dev; }; =20 +int pci_ide_domain(struct pci_dev *pdev); struct pci_ide_partner *pci_ide_to_settings(struct pci_dev *pdev, struct p= ci_ide *ide); struct pci_ide *pci_ide_stream_alloc(struct pci_dev *pdev); void pci_ide_stream_free(struct pci_ide *ide); diff --git a/drivers/pci/ide.c b/drivers/pci/ide.c index 10603f2d2319..7633b8e52399 100644 --- a/drivers/pci/ide.c +++ b/drivers/pci/ide.c @@ -345,12 +345,13 @@ void pci_ide_stream_unregister(struct pci_ide *ide) } EXPORT_SYMBOL_GPL(pci_ide_stream_unregister); =20 -static int pci_ide_domain(struct pci_dev *pdev) +int pci_ide_domain(struct pci_dev *pdev) { if (pdev->fm_enabled) return pci_domain_nr(pdev->bus); return 0; } +EXPORT_SYMBOL_GPL(pci_ide_domain); =20 struct pci_ide_partner *pci_ide_to_settings(struct pci_dev *pdev, struct p= ci_ide *ide) { @@ -420,10 +421,7 @@ void pci_ide_stream_setup(struct pci_dev *pdev, struct= pci_ide *ide) val =3D FIELD_PREP(PCI_IDE_SEL_RID_1_LIMIT, settings->rid_end); pci_write_config_dword(pdev, pos + PCI_IDE_SEL_RID_1, val); =20 - val =3D FIELD_PREP(PCI_IDE_SEL_RID_2_VALID, 1) | - FIELD_PREP(PCI_IDE_SEL_RID_2_BASE, settings->rid_start) | - FIELD_PREP(PCI_IDE_SEL_RID_2_SEG, pci_ide_domain(pdev)); - + val =3D PREP_PCI_IDE_SEL_RID_2(settings->rid_start, pci_ide_domain(pdev)); pci_write_config_dword(pdev, pos + PCI_IDE_SEL_RID_2, val); =20 /* --=20 2.25.1