From patchwork Tue May 16 18:02:01 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Dwivedi, Avaneesh Kumar (avani)" X-Patchwork-Id: 9729459 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 7684660386 for ; Tue, 16 May 2017 18:03:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6DC9728736 for ; Tue, 16 May 2017 18:03:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5EC1E286DE; Tue, 16 May 2017 18:03:21 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 96AD6286DE for ; Tue, 16 May 2017 18:03:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753377AbdEPSC3 (ORCPT ); Tue, 16 May 2017 14:02:29 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:37684 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753243AbdEPSCZ (ORCPT ); Tue, 16 May 2017 14:02:25 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id B4AB46087E; Tue, 16 May 2017 18:02:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1494957739; bh=ENHHYpwULWKqUGt6mEWmdgbKkYNpejJa3VvgmG38g/w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AuxVQwoGd5FoVoXeW+BFLLeKF9wRFcO4kTNR4YyQUuNHYulL6L9lnEVoEv1/LFhaE a8HeyrdEY+FcmYvZkyWulgBkoADzCSYohpM4M0Xs4TdK4bVPD6xkNBpFagsDFyaq56 QlkAkDeeauVSOzv8JygFwwSALsV6n7N/1k6x5uyE= Received: from akdwived-linux.qualcomm.com (unknown [202.46.23.54]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: akdwived@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 0E9046087E; Tue, 16 May 2017 18:02:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1494957739; bh=ENHHYpwULWKqUGt6mEWmdgbKkYNpejJa3VvgmG38g/w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AuxVQwoGd5FoVoXeW+BFLLeKF9wRFcO4kTNR4YyQUuNHYulL6L9lnEVoEv1/LFhaE a8HeyrdEY+FcmYvZkyWulgBkoADzCSYohpM4M0Xs4TdK4bVPD6xkNBpFagsDFyaq56 QlkAkDeeauVSOzv8JygFwwSALsV6n7N/1k6x5uyE= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 0E9046087E Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=akdwived@codeaurora.org From: Avaneesh Kumar Dwivedi To: bjorn.andersson@linaro.org Cc: sboyd@codeaurora.org, agross@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-remoteproc@vger.kernel.org, Avaneesh Kumar Dwivedi Subject: [RESEND: PATCH v4 3/4] remoteproc: qcom: Make secure world call for mem ownership switch Date: Tue, 16 May 2017 23:32:01 +0530 Message-Id: <1494957722-13264-4-git-send-email-akdwived@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1494957722-13264-1-git-send-email-akdwived@codeaurora.org> References: <1494957722-13264-1-git-send-email-akdwived@codeaurora.org> Sender: linux-remoteproc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP MSS proc on msm8996 can not access fw loaded region without stage second translation of memory pages where mpss image are loaded. This patch in order to enable mss boot on msm8996 invoke scm call to switch or share ownership between apps and modem. Signed-off-by: Avaneesh Kumar Dwivedi --- drivers/remoteproc/qcom_q6v5_pil.c | 84 +++++++++++++++++++++++++++++++++++++- 1 file changed, 82 insertions(+), 2 deletions(-) diff --git a/drivers/remoteproc/qcom_q6v5_pil.c b/drivers/remoteproc/qcom_q6v5_pil.c index 2626954..57a4cfec 100644 --- a/drivers/remoteproc/qcom_q6v5_pil.c +++ b/drivers/remoteproc/qcom_q6v5_pil.c @@ -110,6 +110,7 @@ struct rproc_hexagon_res { struct qcom_mss_reg_res *active_supply; char **proxy_clk_names; char **active_clk_names; + bool need_mem_protection; }; struct q6v5 { @@ -151,6 +152,7 @@ struct q6v5 { phys_addr_t mpss_reloc; void *mpss_region; size_t mpss_size; + bool need_mem_protection; struct qcom_rproc_subdev smd_subdev; }; @@ -288,6 +290,43 @@ static struct resource_table *q6v5_find_rsc_table(struct rproc *rproc, return &table; } +static int q6v5_assign_mem_to_subsys(struct q6v5 *qproc, + phys_addr_t addr, size_t size) +{ + struct qcom_scm_destVmPerm next[] = {{ QCOM_SCM_VMID_MSS_MSA, + (QCOM_SCM_PERM_READ | QCOM_SCM_PERM_WRITE)} }; + int ret; + + size = ALIGN(size, SZ_4K); + if (!qproc->need_mem_protection) + return 0; + ret = qcom_scm_assign_mem(addr, size, + BIT(QCOM_SCM_VMID_HLOS), next, sizeof(next)); + if (ret) + pr_err("%s: Failed to assign memory access, ret = %d\n", + __func__, ret); + return ret; +} + +static int q6v5_assign_mem_to_linux(struct q6v5 *qproc, + phys_addr_t addr, size_t size) +{ + struct qcom_scm_destVmPerm next[] = { { QCOM_SCM_VMID_HLOS, + (QCOM_SCM_PERM_READ | QCOM_SCM_PERM_WRITE | QCOM_SCM_PERM_EXEC)} + }; + int ret; + + size = ALIGN(size, SZ_4K); + if (!qproc->need_mem_protection) + return 0; + ret = qcom_scm_assign_mem(addr, size, + BIT(QCOM_SCM_VMID_MSS_MSA), next, sizeof(next)); + if (ret) + pr_err("%s: Failed to assign memory access, ret = %d\n", + __func__, ret); + return ret; +} + static int q6v5_load(struct rproc *rproc, const struct firmware *fw) { struct q6v5 *qproc = rproc->priv; @@ -461,6 +500,13 @@ static int q6v5_mpss_init_image(struct q6v5 *qproc, const struct firmware *fw) memcpy(ptr, fw->data, fw->size); + /* Hypervisor mapping to access metadata by modem */ + ret = q6v5_assign_mem_to_subsys(qproc, phys, fw->size); + if (ret) { + dev_err(qproc->dev, + "Failed to assign metadata memory, ret - %d\n", ret); + return -ENOMEM; + } writel(phys, qproc->rmb_base + RMB_PMI_META_DATA_REG); writel(RMB_CMD_META_DATA_READY, qproc->rmb_base + RMB_MBA_COMMAND_REG); @@ -471,6 +517,11 @@ static int q6v5_mpss_init_image(struct q6v5 *qproc, const struct firmware *fw) dev_err(qproc->dev, "metadata authentication failed: %d\n", ret); + /* Metadata authentication done, remove modem access */ + ret = q6v5_assign_mem_to_linux(qproc, phys, fw->size); + if (ret) + dev_err(qproc->dev, + "Failed to reclaim metadata memory, ret - %d\n", ret); dma_free_attrs(qproc->dev, fw->size, ptr, phys, dma_attrs); return ret < 0 ? ret : 0; @@ -581,6 +632,10 @@ static int q6v5_mpss_load(struct q6v5 *qproc) } /* Transfer ownership of modem region with modem fw */ boot_addr = relocate ? qproc->mpss_phys : min_addr; + ret = q6v5_assign_mem_to_subsys(qproc, + qproc->mpss_phys, qproc->mpss_size); + if (ret) + return ret; writel(boot_addr, qproc->rmb_base + RMB_PMI_CODE_START_REG); writel(RMB_CMD_LOAD_READY, qproc->rmb_base + RMB_MBA_COMMAND_REG); writel(size, qproc->rmb_base + RMB_PMI_CODE_LENGTH_REG); @@ -600,6 +655,7 @@ static int q6v5_mpss_load(struct q6v5 *qproc) static int q6v5_start(struct rproc *rproc) { struct q6v5 *qproc = (struct q6v5 *)rproc->priv; + int assign_mem_result; int ret; ret = q6v5_regulator_enable(qproc, qproc->proxy_regs, @@ -635,6 +691,13 @@ static int q6v5_start(struct rproc *rproc) goto assert_reset; } + ret = q6v5_assign_mem_to_subsys(qproc, + qproc->mba_phys, qproc->mba_size); + if (ret) { + dev_err(qproc->dev, + "Failed to assign mba memory access, ret - %d\n", ret); + goto assert_reset; + } writel(qproc->mba_phys, qproc->rmb_base + RMB_MBA_IMAGE_REG); ret = q6v5proc_reset(qproc); @@ -656,16 +719,21 @@ static int q6v5_start(struct rproc *rproc) ret = q6v5_mpss_load(qproc); if (ret) - goto halt_axi_ports; + goto reclaim_mem; ret = wait_for_completion_timeout(&qproc->start_done, msecs_to_jiffies(5000)); if (ret == 0) { dev_err(qproc->dev, "start timed out\n"); ret = -ETIMEDOUT; - goto halt_axi_ports; + goto reclaim_mem; } + ret = q6v5_assign_mem_to_linux(qproc, + qproc->mba_phys, qproc->mba_size); + if (ret) + dev_err(qproc->dev, + "Failed to reclaim mba memory, ret - %d\n", ret); qproc->running = true; q6v5_clk_disable(qproc->dev, qproc->proxy_clks, @@ -675,12 +743,19 @@ static int q6v5_start(struct rproc *rproc) return 0; +reclaim_mem: + assign_mem_result = + q6v5_assign_mem_to_linux(qproc, + qproc->mpss_phys, qproc->mpss_size); halt_axi_ports: q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_q6); q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_modem); q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_nc); q6v5_clk_disable(qproc->dev, qproc->active_clks, qproc->active_clk_count); + assign_mem_result = + q6v5_assign_mem_to_linux(qproc, + qproc->mba_phys, qproc->mba_size); assert_reset: reset_control_assert(qproc->mss_restart); disable_vdd: @@ -717,6 +792,8 @@ static int q6v5_stop(struct rproc *rproc) q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_modem); q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_nc); + ret = q6v5_assign_mem_to_linux(qproc, + qproc->mpss_phys, qproc->mpss_size); reset_control_assert(qproc->mss_restart); q6v5_clk_disable(qproc->dev, qproc->active_clks, qproc->active_clk_count); @@ -1014,6 +1091,7 @@ static int q6v5_probe(struct platform_device *pdev) if (ret) goto free_rproc; + qproc->need_mem_protection = desc->need_mem_protection; ret = q6v5_request_irq(qproc, pdev, "wdog", q6v5_wdog_interrupt); if (ret < 0) goto free_rproc; @@ -1089,6 +1167,7 @@ static int q6v5_remove(struct platform_device *pdev) "mem", NULL }, + .need_mem_protection = false, }; static const struct rproc_hexagon_res msm8974_mss = { @@ -1126,6 +1205,7 @@ static int q6v5_remove(struct platform_device *pdev) "mem", NULL }, + .need_mem_protection = false, }; static const struct of_device_id q6v5_of_match[] = {