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 49E7536EA88 for ; Tue, 4 Aug 2026 03:54:42 +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=1785815683; cv=none; b=mJiQTgrfoDX7Y8BU254pvjvo+p4GAVkxQP951Q6bv/5HfE5LKqxI+mbGTk600lNNP8HWxsKFjnxRSh3qB/7P1/kgX+lUTLgvLYO6bSdz+bksQUyIVxJm9gAgE8Gb7Jveed56gnVjifkErbijHpUbOYKKhYIbGRasCiFpK93q1R8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785815683; c=relaxed/simple; bh=flZb3gsHy0EahwOfkTw558HlBlNKViepaUVp36Jv6Pw=; h=From:Subject:To:Cc:In-Reply-To:References:Content-Type:Date: Message-Id; b=lqARBo8lWkmyj5SLpiLW/DKNLeJRUO6+YisZhUBgospY84UJA/sRZgrIxY/dSDd7Fs52JKvd5aHnkeGpVm/JURgsaZlM6rh8UYhrbD9t97VjY76XqUzM3oWEsjRMhGHhdsce+VvV6dHS+nG0+OekLfHT1tuduQsvPDOeMY2tr7E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DxSAIg2n; 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="DxSAIg2n" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AF5381F000E9; Tue, 4 Aug 2026 03:54:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785815681; bh=flZb3gsHy0EahwOfkTw558HlBlNKViepaUVp36Jv6Pw=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=DxSAIg2n5tm2PQOyyx/nLNHM3wpMrd9QDBQ2jDAIK0HoBzQfCFfJFNN1qq9gHprnn vaDAMuynS2VMa+RkUiA/PQdNT3+aJiE9NclEk0XPi8MJJ/gieJREduzvRso+2Gj/RG RgiSPCuBjHQlM0gTn3g+sCrkypRbAxANAMTWc4Qn1xWGVfxrgxAmWTbaUW5NcpnQFF fDTcAfvWdnHFpKdYGI6F0We+9aTm01/WixcTojkk5AIYA0bzrjO2wE5i1xzZOyA1zJ TLsjMKkpZIgidstE+/9xPqFGpOpXino+t7ROkXOsF392mwHtWheHqgm5dvGiRuiHD0 c3l1OV00jH+pg== From: sashiko-bot@kernel.org Subject: Re: [PATCH v6 6/6] 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: <20260804033855.2115817-7-den@valinux.co.jp> References: <20260804033855.2115817-1-den@valinux.co.jp> <20260804033855.2115817-7-den@valinux.co.jp> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Tue, 04 Aug 2026 03:54:41 +0000 Message-Id: <20260804035441.AF5381F000E9@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 controller and channel resources only after the local DW eDMA > provider has been registered, and only expose channels whose linked-list > descriptor memory is available. The interrupt-emulation doorbell remains > reported when the local DW eDMA provider is registered and its offset is > valid, even if linked-list resources are unavailable. 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/20260804033855.2115= 817-1-den@valinux.co.jp?part=3D6