Message ID | 20240527-shm-bridge-v10-13-ce7afaa58d3a@linaro.org (mailing list archive) |
---|---|
State | New |
Headers | show
Received: from mail-lj1-f179.google.com (mail-lj1-f179.google.com [209.85.208.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 582FA161336 for <linux-arm-msm@vger.kernel.org>; Mon, 27 May 2024 12:56:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.179 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716814621; cv=none; b=H6HH9KoYZ2VdP7bfV9qeoq25HRKd9V5VjCv1DcNu7jkxLgtIqjpQbndQarq4PZKfxCkdg1Pm883c2ODVq091oJD0wV3OjAvgyrdNiAyYIriIFLkI0UN/jFmP0scl9tR7uSGjxxTbfYYMXSpQDhXpERYvNO43E0FQ/3Nl6PW3mn8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716814621; c=relaxed/simple; bh=SIkMSB3sTwPPn0mnOg/kQxIYsQNRjn/iYM96mTvFTjo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=NOvZmsI8eJYaANuO29mh5T0spG9LKoJ97/bJgHgePM8coN8vvzIKzZ5osFCn7X5YtZ5hnrCFV7xeNcmoqYf8O7I7ntCUMaNyAQdJrlpH+7FMaFG0usGnRkcQ69dlgg1Dr2nFSfc7gf1sbZK7OA96CCTmD9xKVj1WS5H4gEUbtTc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=bgdev.pl; spf=none smtp.mailfrom=bgdev.pl; dkim=pass (2048-bit key) header.d=bgdev-pl.20230601.gappssmtp.com header.i=@bgdev-pl.20230601.gappssmtp.com header.b=k05NMUWE; arc=none smtp.client-ip=209.85.208.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bgdev.pl Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bgdev-pl.20230601.gappssmtp.com header.i=@bgdev-pl.20230601.gappssmtp.com header.b="k05NMUWE" Received: by mail-lj1-f179.google.com with SMTP id 38308e7fff4ca-2e9819a6327so4977251fa.1 for <linux-arm-msm@vger.kernel.org>; Mon, 27 May 2024 05:56:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1716814617; x=1717419417; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=GmwN8T//95zxjXecxSSl+qUrKqxrPgq9A+fgiSUHBZ8=; b=k05NMUWEK2Mm3UwMDJGiJBKZru4xuxkcDhy6QUAztL/MVPCckzxVsowf2ftJlSHV3V BfPoJDCM9RkEqffjjZPAuvhQXgjRhvO+Mnvw9fZDurWL+WUgjWpHS401qIzhCJQJQT91 22lPv+KQT5xnPgGhiWZAAsjpCCBWNwWjj84RzP5VuUotJ21W8PBs9HsyZfUqdkkcOY24 /WzYxyp9Tfx9Gz9kyJarMjGIKKGihOHCtKVFwCEeHMdccs5W9QCjw8gepO6Hlgb50OR5 47yuXFv0skEk87u7STmGY6qHQ/s98yyPltGXheOzX8JB3aiT7UpUNvmxwa9Da0OegsMe l8PQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716814617; x=1717419417; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=GmwN8T//95zxjXecxSSl+qUrKqxrPgq9A+fgiSUHBZ8=; b=JuDDYQhbjaud0rWbgEHtIZ9jO28FETgUmYXLnDhhlrYbOD/akPQEGdO2aiKLPooZoI 9/l84G/U3AQxicxFrzOaK5aEgDUUmV/+99FL0350qW1hvwyI7OYw9Pwd/z11jW89Opx/ tm1IcC3JxoIzrrILuTtNV3i4ODE2ZsqHxxgyAaFja1uGlM1l4j/HbPZfcdJi1XCG5mYG IKafEi7XkBMqaosXJ4xSSjjkDpivLK0mzabjULL57ocXAvgJjFqltGiYPo71NhiILQj/ Qs1TkG2Qm0SXc4l9Kxa9JD/c2G9LOZK0/eXINwIQ1SUKwdUpqinhCI+LBrRDmKdbLxf7 xadw== X-Gm-Message-State: AOJu0YwXARVh7aWgdVazLqtLI50bZicm98EmEUPcPD2V9wiH9XLJViW4 6LzIXStnBWFtL4coZiDNO9eXdMQmkgU2P+6TDT8t8RjzCAh5tVFCVoMKPfVez34= X-Google-Smtp-Source: AGHT+IHKVmTORLwXgauibbUsgi4IYgXJPRYSh+jV0Ob0wIxHrRD9Y6Js2gCtG4ungVqc2e8ClOuQfw== X-Received: by 2002:a2e:beab:0:b0:2e2:7f2:9f9d with SMTP id 38308e7fff4ca-2e95b0bdc6amr68330541fa.24.1716814617360; Mon, 27 May 2024 05:56:57 -0700 (PDT) Received: from [127.0.1.1] ([2a01:cb1d:75a:e000:c322:131e:ff9d:ef41]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-42100f64f98sm138753635e9.24.2024.05.27.05.56.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 May 2024 05:56:57 -0700 (PDT) From: Bartosz Golaszewski <brgl@bgdev.pl> Date: Mon, 27 May 2024 14:55:03 +0200 Subject: [PATCH v10 13/15] firmware: qcom: scm: clarify the comment in qcom_scm_pas_init_image() Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: <linux-arm-msm.vger.kernel.org> List-Subscribe: <mailto:linux-arm-msm+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:linux-arm-msm+unsubscribe@vger.kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20240527-shm-bridge-v10-13-ce7afaa58d3a@linaro.org> References: <20240527-shm-bridge-v10-0-ce7afaa58d3a@linaro.org> In-Reply-To: <20240527-shm-bridge-v10-0-ce7afaa58d3a@linaro.org> To: Bjorn Andersson <andersson@kernel.org>, Konrad Dybcio <konrad.dybcio@linaro.org>, Rob Herring <robh@kernel.org>, Krzysztof Kozlowski <krzk+dt@kernel.org>, Conor Dooley <conor+dt@kernel.org>, Robert Marko <robimarko@gmail.com>, Das Srinagesh <quic_gurus@quicinc.com>, Bartosz Golaszewski <bartosz.golaszewski@linaro.org>, Maximilian Luz <luzmaximilian@gmail.com>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Srini Kandagatla <srinivas.kandagatla@linaro.org>, Arnd Bergmann <arnd@arndb.de>, Elliot Berman <quic_eberman@quicinc.com>, Alex Elder <elder@kernel.org> Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@quicinc.com, Andrew Halaney <ahalaney@redhat.com>, Deepti Jaggi <quic_djaggi@quicinc.com> X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1428; i=bartosz.golaszewski@linaro.org; h=from:subject:message-id; bh=H6Dcs2qENOv98shWWncB/3KIXUDdoYx6h7wJF3Xk+vk=; b=owEBbQKS/ZANAwAKARGnLqAUcddyAcsmYgBmVIMKEwgpVJ1xtFxonWJa7NAoY3e/iI4djtIu+ yVmo6rynJ+JAjMEAAEKAB0WIQQWnetsC8PEYBPSx58Rpy6gFHHXcgUCZlSDCgAKCRARpy6gFHHX ciZZEACPxKDvskowoZgnc1cO2L7lXWmNUEf7Vb4zUvdaLz3U4yQ4x/xF+LXu+pa0/81K9+u8FG0 fTfFA5pEamXWboVOwXK9lYDw1ay3OUEqzBRcP3qa32nQzwYZAktYQmmw/2Lq9El0x/nwUkg5gKd CQ/0l/PFbDBVF2UsuvALOHeMq5EtvVTrDxVe6zbzb70ACVuzX+N4zK7P1DAEtZAKW6aMydLB/aw AmBL56uyR77XErIBN0bW1thuXcInFfG2KL2EVJuJYyKTOY5mhJKF0GfG/bkhWeEgdmIC9LFTgVm kiQL67QOwvvncalUbB5NBA8/sOJhlVu+hj3O4NdGuyBz9zvCUjpRIzktjnGmZxA/iHcqJvoD4UO sbyq/bXWDfZtSoOrP6i+mMXk9W+jjgdqzFtYns3HeewB5HHsmwPPlbrVMShyletl7ddgg/aDlno sxO3Wl7Zi1/Ov/cbgXSLzcy4Qtnk6vwm+J9IrQv/CFuQk02QLsX/nShjyuM9Mw1VAzjF98zd7Ji WjOI4k56oaoc1zrQITItsq4FGiPrAnY+t9WSxGycb/vlhHPC37vwaeWlJGgIe+yzDbu1Dk28tr6 fjN7Wy1nWNi+40A5OKftR7FMViFX8ObNiyUSk6JYWPb1DZ8MQHkNBZN9W57dYKVevF+uEDt70YC IQOnTuF2Q13qlHw== X-Developer-Key: i=bartosz.golaszewski@linaro.org; a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 |
Series |
firmware: qcom: implement support for and enable SHM bridge
|
expand
|
diff --git a/drivers/firmware/qcom/qcom_scm.c b/drivers/firmware/qcom/qcom_scm.c index c82957727650..86e26f17ca19 100644 --- a/drivers/firmware/qcom/qcom_scm.c +++ b/drivers/firmware/qcom/qcom_scm.c @@ -583,6 +583,13 @@ int qcom_scm_pas_init_image(u32 peripheral, const void *metadata, size_t size, * During the scm call memory protection will be enabled for the meta * data blob, so make sure it's physically contiguous, 4K aligned and * non-cachable to avoid XPU violations. + * + * For PIL calls the hypervisor creates SHM Bridges for the blob + * buffers on behalf of Linus so we must not do it ourselves hence + * not using the TZMem allocator here. + * + * If we pass a buffer that is already part of an SHM Bridge to this + * call, it will fail. */ mdata_buf = dma_alloc_coherent(__scm->dev, size, &mdata_phys, GFP_KERNEL);