From patchwork Mon Mar 27 18:42:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dylan Van Assche X-Patchwork-Id: 75626 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp1723396vqo; Mon, 27 Mar 2023 11:58:37 -0700 (PDT) X-Google-Smtp-Source: AKy350aQcjbn6yKsu07oZk3TmhVlqO7k76QDvhl0Hn7ATzEisqqiXrn7rx0r5bi0WXMoCaAuKAXh X-Received: by 2002:a17:90b:1a88:b0:23e:aba9:d51d with SMTP id ng8-20020a17090b1a8800b0023eaba9d51dmr13687464pjb.7.1679943517317; Mon, 27 Mar 2023 11:58:37 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1679943517; cv=none; d=google.com; s=arc-20160816; b=KIYmp+TSaLXPwtLAfXqJ496d4q1bgUMfF2B0qzSVHa3eqrNbhkYsNe7URquNSvv6Rz wf5l5CIYaH4irETozZuyVpoUzADkTb+y2THInZpjx1iO6MGSDi5Uffm0fiJI0LgbooTV YKsWbzWqxNDhcl9QLnpeMDEceWz2b7yz9evXVc4/NrNVM/xaom32+QsYI2iFIRV3vn/C xanAiqbiBffxQaiTCnfx5gONWFKX2FWPj3fyY3Cwk93sfZW66JNYIt6rXlrheMX6Ttr1 /bY+hPyRTIbtpS7kYJedLQAvpdSE/ZF3llKw2ILLQ8PPFv0+JWbzYDgGGMf6Mwx/UiqS F0Eg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=YA9Z6Ce+zSDDUHL/hOOqdBN8+RqhLoUSRKQM+XmUbV0=; b=xrapHa3Fi98jLpwkuHfkufrDLFQqIjrhSwYXkQxuHfQa4mNRBYZMOkXg6l1Z+9rxB1 YUSAKUunECFXLTbiX27F7EAoWhTUvFzwQwO0/7grPurBVuK2gfF0hfmhAI1B35QL0UJ1 pCe09BferUqQz2zl5FrrtbCPkI631SP9Vhq/eWqBfGZVH5dd/eBMCd22f+uBwsnwO4OE L3Yt1LfGoeDl3URVAl0osCFA1NJU55eptrmkwkpIa33uvYKlbaDQcBibGk3ijmTI7Xg+ f4gC3Rz5E/XH+rcV4KPiguOnVlqYGeZJdbselXeQVNh4R/zka5czrSc5iQadOBZa1AS2 q++Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@dylanvanassche.be header.s=MBO0001 header.b=RBstaBAV; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=dylanvanassche.be Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id q12-20020a170902dacc00b0019f79ba4a01si25179859plx.443.2023.03.27.11.58.25; Mon, 27 Mar 2023 11:58:37 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@dylanvanassche.be header.s=MBO0001 header.b=RBstaBAV; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=dylanvanassche.be Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232202AbjC0SnP (ORCPT + 99 others); Mon, 27 Mar 2023 14:43:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56912 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232744AbjC0SnG (ORCPT ); Mon, 27 Mar 2023 14:43:06 -0400 Received: from mout-p-202.mailbox.org (mout-p-202.mailbox.org [IPv6:2001:67c:2050:0:465::202]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 33A6B4230; Mon, 27 Mar 2023 11:42:28 -0700 (PDT) Received: from smtp102.mailbox.org (smtp102.mailbox.org [IPv6:2001:67c:2050:b231:465::102]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-202.mailbox.org (Postfix) with ESMTPS id 4PlhWJ2Mtnz9sT1; Mon, 27 Mar 2023 20:42:20 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dylanvanassche.be; s=MBO0001; t=1679942540; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=YA9Z6Ce+zSDDUHL/hOOqdBN8+RqhLoUSRKQM+XmUbV0=; b=RBstaBAVEtWDgmLe6MjWgNh2okU3w6dAMt2iehw83rtAxvQdl62NSrOLzJX/dcDkvTZ8dn 3E+QkvT+PcHXowPaQNbYpcnIGfnwilBYgaD94XU+HGJuVG73WZ88gfeCdLefwSR3vM5jau QaXyjd3beMWLHhKH3GueyeIxtlaVFxBlPZQpFILXuB8Zs/RcchEAs5xINcDjqrFj4QfOHd 82TMiN/ou/vayKVpE1U1oZRWlKgIlBITkpqb/YPOezhf3EcpD5le79ag2bsH05GYvmpNrB KD6f9YtejGji38CDdEzaip1UJv+/qZT6JYJM7SYN/AX2gF5v3xzW4iETl4zcXw== From: Dylan Van Assche To: Srinivas Kandagatla , Amol Maheshwari Cc: Arnd Bergmann , Greg Kroah-Hartman , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, phone-devel@vger.kernel.org, Dylan Van Assche Subject: [PATCH v2 1/2] misc: fastrpc: support complete DMA pool access to the DSP Date: Mon, 27 Mar 2023 20:42:03 +0200 Message-Id: <20230327184204.498032-2-me@dylanvanassche.be> In-Reply-To: <20230327184204.498032-1-me@dylanvanassche.be> References: <20230327184204.498032-1-me@dylanvanassche.be> MIME-Version: 1.0 X-Rspamd-Queue-Id: 4PlhWJ2Mtnz9sT1 X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_LOW,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1761548453571353080?= X-GMAIL-MSGID: =?utf-8?q?1761548453571353080?= To support FastRPC Context Banks which aren't mapped via the SMMU, make the whole reserved memory region available to the DSP to allow access to coherent buffers. This is performed by assigning the memory to the DSP via a hypervisor call to set the correct permissions for the Virtual Machines on the DSP. This is only necessary when a memory region is provided for SLPI DSPs so guard this with a domain ID check. Signed-off-by: Dylan Van Assche Reviewed-by: Caleb Connolly --- drivers/misc/fastrpc.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c index f48466960f1b..caf2ae556956 100644 --- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -2231,6 +2231,8 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev) int i, err, domain_id = -1, vmcount; const char *domain; bool secure_dsp; + struct device_node *rmem_node; + struct reserved_mem *rmem; unsigned int vmids[FASTRPC_MAX_VMIDS]; err = of_property_read_string(rdev->of_node, "label", &domain); @@ -2274,6 +2276,20 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev) } } + rmem_node = of_parse_phandle(rdev->of_node, "memory-region", 0); + dev_info(rdev, "ASSIGNING MEMORY\n"); + if (domain_id == SDSP_DOMAIN_ID && rmem_node) { + rmem = of_reserved_mem_lookup(rmem_node); + if (!rmem) + return -EINVAL; + + dev_info(rdev, "ASSIGNING MEMORY START\n"); + qcom_scm_assign_mem(rmem->base, rmem->size, &data->perms, + data->vmperms, data->vmcount); + + dev_info(rdev, "ASSIGNING MEMORY END\n"); + } + secure_dsp = !(of_property_read_bool(rdev->of_node, "qcom,non-secure-domain")); data->secure = secure_dsp;