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 35DFF374170 for ; Tue, 4 Aug 2026 03:41:59 +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=1785814921; cv=none; b=agXkqhQ5mASandgc9SRZhWrgg+l/NMGKvtOXydyv/+F80VsKY5SvVrYXmEBnSH2v7TxSC/oNGgKdYZzQhq7ChYX/Wy+WYHmUPLbwg03AWK/gc05JFgnrOb76z/lLtXomHOjcwQZUMWD+adkj/4yMyVyeKQSThX5ey6EY3GQPjLo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785814921; c=relaxed/simple; bh=4x6aBSsxe4AcFUEyDt6IM8FNEaCcbx+psZMvKY5gwiY=; h=From:Subject:To:Cc:In-Reply-To:References:Content-Type:Date: Message-Id; b=CmIlftPpY/FS7k9k37RdxwctgW27kjYxT18B1owH/UoUoJb4QjnVaW2Fq8KRKGlXneK7PM+EkTuZf7tPG4WmaHCtfS6MRlVxDoezK/XLMVVMhDEAFd+b+fRFALoHTuDBMoldZj4SJjXN7qjiVE6mFpLlukI6JJwz5tBW1NxIO80= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=X3q5f8NX; 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="X3q5f8NX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AB24E1F000E9; Tue, 4 Aug 2026 03:41:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785814919; bh=4x6aBSsxe4AcFUEyDt6IM8FNEaCcbx+psZMvKY5gwiY=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=X3q5f8NXmt89B4CZB7bpKTaLi5ZJoUmgFJqvh67MabgOgZ6v/NIK0mMTWzDRvJHBx y6LI89kS16B5RqHcHk30jNcvbDqPPqzNfaqhWeVyqdIYuC3QfoJVc+yUkzz/rLQ8og P3VJNBh8USALgsRI2DA+QAJedQReKKJFA4LOPiVjfJHMgt4HM/zDGvaLVTO9z38YDk LEDTNlgbgQL/csPVkXm6KoBIdOf/SOC4FwFzJ+Xn/oufPAOUevY/ag8h0RJx3O6zEV JyuK9196P4z9DvzeFL2FPTz/BT21jOYd/0nDzfkNm+rqHzDFkHTLZNg0vvZje2fNIi 90cvwKWLyXLsw== From: sashiko-bot@kernel.org Subject: Re: [PATCH v6 2/6] 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: <20260804033855.2115817-3-den@valinux.co.jp> References: <20260804033855.2115817-1-den@valinux.co.jp> <20260804033855.2115817-3-den@valinux.co.jp> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Tue, 04 Aug 2026 03:41:59 +0000 Message-Id: <20260804034159.AB24E1F000E9@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/20260804033855.2115= 817-1-den@valinux.co.jp?part=3D2