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 72CAB2DC783 for ; Sat, 20 Jun 2026 17:09:52 +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=1781975393; cv=none; b=KzaZ2eHLV9hCcff46NJ5gBo1ecmXfNovh33Fwr1RqaOzKz/VF7vUaTXiJ60c2Axm4aJZv/y4WuW8nE/S8Yk4tKW24gMoymQYBdx0aqvHD0ZT6Bw74psfenavNSXNSd8D+42U8HhN9JlHvnmFbNAhUzrz0rDbZcr0jDpIECrrNqY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781975393; c=relaxed/simple; bh=mK/zRnd7wTUzz+iDqPHePEbllrQFLD02Zl8Al1Uj/K0=; h=From:Subject:To:Cc:In-Reply-To:References:Content-Type:Date: Message-Id; b=gcdFKNjI+US3ZszTKvk9riaVUfPfkEVFa7ZKPAKEnX5nFe07EK4rnMc7dmCgHz2pxK3NhbJVK25bvkqCQwYq5RiQMoIpKL6vDBhEswUXC7ng4GHGLTSvVP0lDZsDVQ1EQYXTnmPKIqBnaaeJd3fuUMl7W6c3oDSQc3Z+JWjmbWk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BkqkJGOQ; 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="BkqkJGOQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 08C4B1F00A3D; Sat, 20 Jun 2026 17:09:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1781975392; bh=mK/zRnd7wTUzz+iDqPHePEbllrQFLD02Zl8Al1Uj/K0=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=BkqkJGOQ3rmveL5zM/zPhPzH4x/vuva3SHC1D7MioZDoBQe+w7BRw5WFsmykfrZSS M5lbJYhpJ/4DYm7i/Mv/4ahxRqBPx3wnXVmLSscUMCSX6rvKy22aO+GvrhPQNDPMcL RFMmYhNunxt889Mi90pU7vJZDGFfNzzNYV8FH7/TyKPUhLFwOl/h5Yqgh1iGVmqC+k c4K8CSfXGkbbefE/oAyVefnmaRxtMTcEa7alp6PXU+ulAN6CyYmn9PZg82HGLI7qq4 Cft3RPVMd+ktABt7OJ8Cv/FH8fwL0LOLiVs4feORnYKIpc/HkZeqJQv8cZF/oWr9FW DSE3GT+t4cg2Q== From: sashiko-bot@kernel.org Subject: Re: [PATCH v3 2/5] PCI: endpoint: Add DMA auxiliary resource metadata Reply-To: sashiko-reviews@lists.linux.dev To: "Koichiro Den" Cc: linux-pci@vger.kernel.org In-Reply-To: <20260620170438.3756593-3-den@valinux.co.jp> References: <20260620170438.3756593-1-den@valinux.co.jp> <20260620170438.3756593-3-den@valinux.co.jp> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Sat, 20 Jun 2026 17:09:51 +0000 Message-Id: <20260620170952.08C4B1F00A3D@smtp.kernel.org> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: > Extend EPC auxiliary resource metadata so endpoint functions can > discover controller-owned DMA registers, logical DMA channels, and > descriptor memory. >=20 > The DMA metadata is intentionally generic at the EPC layer. A backend > reports the register layout, channel counts, logical channel resources, > and descriptor memory resources. Logical channels carry hardware channel > numbers and refer to descriptor memory by ID; reserving or delegating > those channels is handled by separate EPC operations so resource metadata > stays independent of any backend-specific DMA provider. Descriptor memory > is identified separately so one memory resource can be shared by multiple > channels. >=20 > For DesignWare controllers, reg_layout_data carries the eDMA/HDMA map > format so a consumer can distinguish legacy, unroll, HDMA compatible, > and HDMA native register layouts without making the EPC API itself > DesignWare-specific. >=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=3D2