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 F35214A3F3A; Thu, 10 Sep 2026 14:06:54 +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=1789049216; cv=none; b=dFnvsoulJpXqtAnpS8ppCYHI04QWoy/rS/7PgiQOOsBw7vwq9scDMtua53S0BtZFYEcqvC5ebegrTQNaZz1Gv20o8/q8hPdYXoYK6wR4Wgg4VTbzkyaGHh7zreQD5utvKAir8OBDK3kEFDLaFky6MUry3h0swjw4gF31N3BNl3Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789049216; c=relaxed/simple; bh=c5lfmiCJYlY+UhANXT9srmqmEWUJIiCKECCxpceAQII=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=NgdqUnfNE5TSjppgS/zyBYpDgMCrw2Z9zdMyVg1SMUvmvyryxFncAuwN/0bblHG/Zvxc+tmtEZeWOEUqqxikz6NubOt4g6iDkqYpNUmT2Fkjljqckr/eTo0V2E3TgpGHSloyCddb0JQmRtUoVlVIdj2NAgqnPMlOpcpDMPfRwwY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=g16gXhhx; 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="g16gXhhx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 039471F00898; Thu, 10 Sep 2026 14:06:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789049214; bh=HfACVSTqqZWVHHMsfW9j7D8zjVuyoIFAMlGVkuERVwY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=g16gXhhxkVq5S5oxzfWsaWCw3urd025JZW1sxsu9eBUu1CdJDqpISr68hktAo/CHr 2F2O/QCunWoL+37JccgSRDvuhWzbmLGW4J0X2PhPFNGRVwApRS5XmPH5Lf0Ylg4PPa YbhNeDsiLtUHHK83QQtbLdaJ3I9v5IhzjCI5tAM3J049vv7Atw+WEUIhjtbQvwAAf4 dDzmBw1Y1FPRD6I1J8/MaZjYuBAMNfvOZl1N2XddNvNnW4w4BWdXCZSt6NfMABdXqd KBVRcFCrHkdq0LMLI22NTuK2daML6fj7B3HFs5psQJtkawQQmgXk/MYUp4/fhuY4nP mtTkAoj8KrYTA== 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: [PATCH v5 14/15] coco: host: arm64: Add NCOH_SYS stream support for RC endpoints Date: Thu, 10 Sep 2026 19:35:07 +0530 Message-ID: <20260910140509.868402-15-aneesh.kumar@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260910140509.868402-1-aneesh.kumar@kernel.org> References: <20260910140509.868402-1-aneesh.kumar@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org 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/main.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/main.c b/drivers/virt/coco/arm-cca-host/main.c index 70cbff181561..b7b0cc0a016c 100644 --- a/drivers/virt/coco/arm-cca-host/main.c +++ b/drivers/virt/coco/arm-cca-host/main.c @@ -252,11 +252,39 @@ 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->stream_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 fcca9f73b5fb..794385f818ce 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