From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 7A3552E2850; Mon, 27 Apr 2026 06:52:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777272773; cv=none; b=djq3jhEeCGhr+df6VprjEpToS2vf+AhZog7JDSaKd1xqy7Y2FXqvfbnYW+yLgBVYbW46ITJCvoNNdNRgBic5cATLybxOMzIIHBnJITVYl9z14sOmKDpQr7ca5pMtkGHU2+9Oz7izSHtFYq/iCTjZDt5+P0jM4agz3nziHbzjrVg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777272773; c=relaxed/simple; bh=TKihfP1sVP9MoGos7O6yEjkbJNsJ70AjwacVZf82tOU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jb6efkaXL+1iP8MaPqc3VjLd559qS/4HtP4YFYDF4C5lppmmOYRtf7WHvn6gVTS+Lvcd8z+TA1sG+9mQsn5kPpQfggyYloylJOE2hHXOScovxBM3yrSQuxdJErI+1QeBWoe0lIpWeXgtm5F3omwBW6VmeTfWAAEimu33JPAWU50= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Jb1GNe7o; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Jb1GNe7o" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5D30BC4AF0B; Mon, 27 Apr 2026 06:52:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777272773; bh=TKihfP1sVP9MoGos7O6yEjkbJNsJ70AjwacVZf82tOU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Jb1GNe7oJiWmum8eE+T3ZUHoLT6j/OA0ZwpbjHuWebCbYAIuZ5FoqY15tUhTJx2LK WrPejaCgrTcjFQhm1tLf1LCclzLc98EreGo2TbtiXili1SBXxQKmvUbddoIW3dgwg0 ZZBY37PV8tL/nS/NnKgMmneG9MNHBfsGz14rTMiNTL6zxzXQV9twoTmkVFytCTfGlt m8piyK1TPe0UrBE8Bq8wUHvsKD9mB9ZU32UlrJu7lGedIKeN2n7IF6XW9dHuCtOfvl OhV2qrdcw2+V+TDF7OfyqUv4VT1Rztktxc2ez54IHSTLpZRIb1uXMnFyhKLLsW+ej8 V32UcleUrrZHA== From: "Aneesh Kumar K.V (Arm)" To: linux-coco@lists.linux.dev, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: "Aneesh Kumar K.V (Arm)" , Alexey Kardashevskiy , Catalin Marinas , Dan Williams , Jason Gunthorpe , Jonathan Cameron , Marc Zyngier , Samuel Ortiz , Steven Price , Suzuki K Poulose , Will Deacon , Xu Yilun Subject: [RFC PATCH v4 14/14] coco: host: arm64: Add NCOH_SYS stream support for RC endpoints Date: Mon, 27 Apr 2026 12:21:21 +0530 Message-ID: <20260427065121.916615-15-aneesh.kumar@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260427065121.916615-1-aneesh.kumar@kernel.org> References: <20260427065121.916615-1-aneesh.kumar@kernel.org> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Teach the host CCA pdev setup to handle PCI_EXP_TYPE_RC_END devices. Classify RC integrated endpoints as RMI_PDEV_FLAGS_CATEGORY_ON_CHIP_EP when building the RMM pdev parameters, and only advertise SPDM support when a DOE mailbox is present. Also add the stream setup path for these devices by creating an RMI_PDEV_STREAM_NCOH_SYS stream using the endpoint pdev and its bridge address windows. This allows RC endpoints to participate in the TDISP flow without requiring a separate root-port pdev. Signed-off-by: Aneesh Kumar K.V (Arm) --- drivers/virt/coco/arm-cca-host/arm-cca.c | 28 ++++++++++++++++++++++++ drivers/virt/coco/arm-cca-host/rmi-da.c | 10 +++++++++ 2 files changed, 38 insertions(+) diff --git a/drivers/virt/coco/arm-cca-host/arm-cca.c b/drivers/virt/coco/arm-cca-host/arm-cca.c index 265aa0cb612a..8b1182620872 100644 --- a/drivers/virt/coco/arm-cca-host/arm-cca.c +++ b/drivers/virt/coco/arm-cca-host/arm-cca.c @@ -277,11 +277,39 @@ static int cca_pdev_create_ncoh_stream(struct pci_dev *pdev, unsigned long strea return ret; } +static int cca_pdev_create_ncoh_sys_stream(struct pci_dev *pdev) +{ + int ret; + long stream_handle; + struct rmi_pdev_stream_params *params; + struct cca_host_pf0_ep_dsc *pf0_ep_dsc = to_cca_pf0_ep_dsc(pdev); + + params = (struct rmi_pdev_stream_params *)get_zeroed_page(GFP_KERNEL); + if (!params) + return -ENOMEM; + + params->flags = 0; + params->type = RMI_PDEV_STREAM_NCOH_SYS; + params->pdev_1 = virt_to_phys(pf0_ep_dsc->pdev.rmm_pdev); + params->pdev_2 = 0; /* ignored */ + params->ide_sid = 0; /* ignored */ + params->num_addr_range = pci_dev_addr_range(pdev, params->addr_range); + + ret = cca_pdev_stream_connect(pdev, NULL, params, &stream_handle); + if (!ret) + pf0_ep_dsc->stream_handle = stream_handle; + + free_page((unsigned long)params); + return ret; +} + static int cca_pdev_create_streams(struct pci_dev *pdev, unsigned long stream_id) { switch (pci_pcie_type(pdev)) { case PCI_EXP_TYPE_ENDPOINT: return cca_pdev_create_ncoh_stream(pdev, stream_id); + case PCI_EXP_TYPE_RC_END: + return cca_pdev_create_ncoh_sys_stream(pdev); default: return -EINVAL; } diff --git a/drivers/virt/coco/arm-cca-host/rmi-da.c b/drivers/virt/coco/arm-cca-host/rmi-da.c index a10ac6ff03d1..33a2551fd09f 100644 --- a/drivers/virt/coco/arm-cca-host/rmi-da.c +++ b/drivers/virt/coco/arm-cca-host/rmi-da.c @@ -66,6 +66,16 @@ static int init_pdev_params(struct pci_dev *pdev, struct rmi_pdev_params *params category = RMI_PDEV_FLAGS_CATEGORY_ROOT_PORT; break; } + case PCI_EXP_TYPE_RC_END: { + struct cca_host_pf0_ep_dsc *pf0_ep_dsc = to_cca_pf0_ep_dsc(pdev); + + /* Use SPDM if present */ + if (pf0_ep_dsc->pci.doe_mb) + params->flags = RMI_PDEV_FLAGS_SPDM; + + category = RMI_PDEV_FLAGS_CATEGORY_ON_CHIP_EP; + break; + } default: return -EINVAL; } -- 2.43.0