From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 36CF5233932 for ; Sat, 20 Jun 2026 17:14:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781975660; cv=none; b=sLbxounZtjkOPo3CMw6zs7oLWwyNwdWVdu+glkxIU+Ac8KI9EHvdB52zH+PQpJ5ibnnq3d8s2sz50CdoEi4Vz1ymwlDr7Hk+YxRAJ1vHoa5F7nyh19oF1DqBuP4kMIZT44FFLqkAx0NPZfGTC1brpC3jVMGug1oY629mTXExEiY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781975660; c=relaxed/simple; bh=zz4rnXS0wi/0kIeKRWntBitj3rIhOspFTK13URcVsWo=; h=From:Subject:To:Cc:In-Reply-To:References:Content-Type:Date: Message-Id; b=DV88WeOPJ7troxqpLB2KsT8nLmfT4PqnzylFkxpWlshLtCUVSaDfrO2DfmHDyGD0vFb1nZQeYBUMrkXIfAKJBIay4hbkTw7EN3UfDMPdU3xnCMXKxZEW4wuvDpjd4lE+zCMuT2gGLDVgsHeQjTuo1YDzUgIKZPlNPwaYDCNvef8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jHYppI31; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="jHYppI31" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EAFD41F000E9; Sat, 20 Jun 2026 17:14:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781975659; bh=zz4rnXS0wi/0kIeKRWntBitj3rIhOspFTK13URcVsWo=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=jHYppI31I3fAmJpwFVT9jCgG8QS2QyQ/cSFIydvMUJTUYDM14SfE/qkUgOqX5kobM 7dEaospp5eHEUo6tocmvPA3v0w20YDFYcWHD/d6DgiYnojvr8blYINRWkNB440H03e vKzmd62ij5gdDmCweKU2sKMJs+C6Hq30xgQwAFGVaHntJICLQv1r3vFWeZChrzT3o4 3wbx8Yq4Zpfl+GNl2p5wWTI3cEKIR7hRTl6joqt6rOhXHtDt63IVMTA4+EudgIzC6l tSUsSC/aTApRCBbbvzeCEoDmBRp7v5b+wbjrQGeYLYwlUUNpbLXac1pU3WZyjBRcVp qAQZ/XX5isNGQ== From: sashiko-bot@kernel.org Subject: Re: [PATCH v3 4/5] PCI: dwc: Expose endpoint DMA resources Reply-To: sashiko-reviews@lists.linux.dev To: "Koichiro Den" Cc: linux-pci@vger.kernel.org In-Reply-To: <20260620170438.3756593-5-den@valinux.co.jp> References: <20260620170438.3756593-1-den@valinux.co.jp> <20260620170438.3756593-5-den@valinux.co.jp> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Sat, 20 Jun 2026 17:14:18 +0000 Message-Id: <20260620171418.EAFD41F000E9@smtp.kernel.org> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: > Expose the DesignWare endpoint-integrated eDMA register window, logical > DMA channels, and linked-list descriptor memories through the EPC > auxiliary resource API. This lets endpoint functions decide which > channels to publish to the host. >=20 > When the DMA register window is already visible through a reserved BAR > region, report its BAR and offset. Otherwise report it as a normal > physical resource so an endpoint function can map it. DMA channel > resources carry hardware channel selectors and refer to linked-list > descriptor memory by ID. >=20 > Expose DMA resources only after the local DW eDMA provider has been > registered, and only expose channels whose linked-list descriptor memory > is available. DWC non-LL exposure needs a metadata ABI and host parser > extension, so leave it unsupported for now. Reject VF auxiliary resource > queries because the RC-programmable DWC eDMA/HDMA register window is > assigned to a PF BAR only. >=20 > Signed-off-by: Koichiro Den Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20260620170438.3756= 593-1-den@valinux.co.jp?part=3D4