From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 01713FC6182 for ; Fri, 14 Sep 2018 13:25:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 90EB220671 for ; Fri, 14 Sep 2018 13:25:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="Aw+xWWqT"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="AOyO51pl" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 90EB220671 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728327AbeINSkI (ORCPT ); Fri, 14 Sep 2018 14:40:08 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:53586 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727611AbeINSkH (ORCPT ); Fri, 14 Sep 2018 14:40:07 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 7786860AFF; Fri, 14 Sep 2018 13:25:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1536931536; bh=l7dVSoOv4XqQXfirUoKe9p9o+2zZlWOdrt7/BM6sa0M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Aw+xWWqTaMfccyrrz7K6EdBxo4uhlHUZRZ6sJVYQt638gVC37ZCZ+4uoae+N3WTeE etD+3mSVffspKL7zPtjuMB4w0+MDNylfxRj3dxeLWiHrquyXCsRiYAJeFrfcBYJyHc FxGO9hWHHC90HMQKUMOdzv0hLXLtgINyFGBCz1og= Received: from vgarodia-linux.qualcomm.com (blr-c-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: vgarodia@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 2BA1460B19; Fri, 14 Sep 2018 13:25:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1536931534; bh=l7dVSoOv4XqQXfirUoKe9p9o+2zZlWOdrt7/BM6sa0M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AOyO51plsp+2Nze90R2/AC3bceEphGDOp247P3Gk2i5Z7JOKlpFkftFsYmDEm0Pvj G33+GmGyr/fmBDxpYsrryueHtrdexC/pY08RW1+op7ws8bDweFgxcIhkZYR9OFJHlU 4oTDIf8GInc4rC31D8ISqROgnDTFhjBtH1Ah7tk4= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 2BA1460B19 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=vgarodia@codeaurora.org From: Vikash Garodia To: stanimir.varbanov@linaro.org, hverkuil@xs4all.nl, mchehab@kernel.org, robh@kernel.org, mark.rutland@arm.com, andy.gross@linaro.org, arnd@arndb.de, bjorn.andersson@linaro.org Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org, devicetree@vger.kernel.org, acourbot@chromium.org, vgarodia@codeaurora.org Subject: [PATCH v7 4/5] venus: firmware: add no TZ boot and shutdown routine Date: Fri, 14 Sep 2018 18:54:36 +0530 Message-Id: <1536931477-13018-5-git-send-email-vgarodia@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1536931477-13018-1-git-send-email-vgarodia@codeaurora.org> References: <1536931477-13018-1-git-send-email-vgarodia@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Video hardware is mainly comprised of vcodec subsystem and video control subsystem. Video control has ARM9 which executes the video firmware instructions whereas vcodec does the video frame processing. This change adds support to load the video firmware and bring ARM9 out of reset for platforms which does not have trustzone. An iommu domain is associated and managed with the firmware device. Signed-off-by: Vikash Garodia --- drivers/media/platform/qcom/venus/core.c | 6 +- drivers/media/platform/qcom/venus/core.h | 1 + drivers/media/platform/qcom/venus/firmware.c | 94 +++++++++++++++++++++++- drivers/media/platform/qcom/venus/firmware.h | 2 +- drivers/media/platform/qcom/venus/hfi_venus_io.h | 1 + 5 files changed, 97 insertions(+), 7 deletions(-) diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c index 440f25f..3bd3b8a 100644 --- a/drivers/media/platform/qcom/venus/core.c +++ b/drivers/media/platform/qcom/venus/core.c @@ -76,7 +76,7 @@ static void venus_sys_error_handler(struct work_struct *work) hfi_core_deinit(core, true); hfi_destroy(core); mutex_lock(&core->lock); - venus_shutdown(core->dev); + venus_shutdown(core); pm_runtime_put_sync(core->dev); @@ -327,7 +327,7 @@ static int venus_probe(struct platform_device *pdev) err_core_deinit: hfi_core_deinit(core, false); err_venus_shutdown: - venus_shutdown(dev); + venus_shutdown(core); err_runtime_disable: pm_runtime_set_suspended(dev); pm_runtime_disable(dev); @@ -348,7 +348,7 @@ static int venus_remove(struct platform_device *pdev) WARN_ON(ret); hfi_destroy(core); - venus_shutdown(dev); + venus_shutdown(core); of_platform_depopulate(dev); venus_firmware_deinit(core); diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h index 3a53d5d..b9a9dc9 100644 --- a/drivers/media/platform/qcom/venus/core.h +++ b/drivers/media/platform/qcom/venus/core.h @@ -132,6 +132,7 @@ struct venus_core { struct device *dev_enc; struct video_firmware { struct device *dev; + struct iommu_domain *iommu_domain; } fw; bool no_tz; struct mutex lock; diff --git a/drivers/media/platform/qcom/venus/firmware.c b/drivers/media/platform/qcom/venus/firmware.c index 69a99cd..badca87 100644 --- a/drivers/media/platform/qcom/venus/firmware.c +++ b/drivers/media/platform/qcom/venus/firmware.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -122,6 +123,56 @@ static int venus_load_fw(struct venus_core *core, const char *fwname, return ret; } +static int venus_boot_no_tz(struct venus_core *core, phys_addr_t mem_phys, + size_t mem_size) +{ + struct iommu_domain *iommu; + struct device *dev; + int ret; + + dev = core->fw.dev; + if (!dev) + return -EPROBE_DEFER; + + iommu = core->fw.iommu_domain; + + ret = iommu_map(iommu, VENUS_FW_START_ADDR, mem_phys, mem_size, + IOMMU_READ | IOMMU_WRITE | IOMMU_PRIV); + if (ret) { + dev_err(dev, "could not map video firmware region\n"); + return ret; + } + + venus_reset_cpu(core); + + return 0; +} + +static int venus_shutdown_no_tz(struct venus_core *core) +{ + struct iommu_domain *iommu; + size_t unmapped; + u32 reg; + struct device *dev = core->fw.dev; + void __iomem *base = core->base; + + /* Assert the reset to ARM9 */ + reg = readl_relaxed(base + WRAPPER_A9SS_SW_RESET); + reg |= WRAPPER_A9SS_SW_RESET_BIT; + writel_relaxed(reg, base + WRAPPER_A9SS_SW_RESET); + + /* Make sure reset is asserted before the mapping is removed */ + mb(); + + iommu = core->fw.iommu_domain; + + unmapped = iommu_unmap(iommu, VENUS_FW_START_ADDR, VENUS_FW_MEM_SIZE); + if (unmapped != VENUS_FW_MEM_SIZE) + dev_err(dev, "failed to unmap firmware\n"); + + return 0; +} + int venus_boot(struct venus_core *core) { struct device *dev = core->dev; @@ -139,17 +190,30 @@ int venus_boot(struct venus_core *core) return -EINVAL; } - return qcom_scm_pas_auth_and_reset(VENUS_PAS_ID); + if (core->no_tz) + ret = venus_boot_no_tz(core, mem_phys, mem_size); + else + ret = qcom_scm_pas_auth_and_reset(VENUS_PAS_ID); + + return ret; } -int venus_shutdown(struct device *dev) +int venus_shutdown(struct venus_core *core) { - return qcom_scm_pas_shutdown(VENUS_PAS_ID); + int ret; + + if (core->no_tz) + ret = venus_shutdown_no_tz(core); + else + ret = qcom_scm_pas_shutdown(VENUS_PAS_ID); + + return ret; } int venus_firmware_init(struct venus_core *core) { struct platform_device_info info; + struct iommu_domain *iommu_dom; struct platform_device *pdev; struct device_node *np; int ret; @@ -179,12 +243,29 @@ int venus_firmware_init(struct venus_core *core) } core->fw.dev = &pdev->dev; + + iommu_dom = iommu_domain_alloc(&platform_bus_type); + if (!iommu_dom) { + dev_err(core->fw.dev, "Failed to allocate iommu domain\n"); + ret = -ENOMEM; + goto err_unregister; + } + + ret = iommu_attach_device(iommu_dom, core->fw.dev); + if (ret) { + dev_err(core->fw.dev, "could not attach device\n"); + goto err_iommu_free; + } + core->no_tz = true; + core->fw.iommu_domain = iommu_dom; of_node_put(np); return 0; +err_iommu_free: + iommu_domain_free(iommu_dom); err_unregister: platform_device_unregister(pdev); of_node_put(np); @@ -193,8 +274,15 @@ int venus_firmware_init(struct venus_core *core) void venus_firmware_deinit(struct venus_core *core) { + struct iommu_domain *iommu; + if (!core->fw.dev) return; + iommu = core->fw.iommu_domain; + + iommu_detach_device(iommu, core->fw.dev); + iommu_domain_free(iommu); + platform_device_unregister(to_platform_device(core->fw.dev)); } diff --git a/drivers/media/platform/qcom/venus/firmware.h b/drivers/media/platform/qcom/venus/firmware.h index fd7edf0..119a9a4 100644 --- a/drivers/media/platform/qcom/venus/firmware.h +++ b/drivers/media/platform/qcom/venus/firmware.h @@ -19,7 +19,7 @@ int venus_firmware_init(struct venus_core *core); void venus_firmware_deinit(struct venus_core *core); int venus_boot(struct venus_core *core); -int venus_shutdown(struct device *dev); +int venus_shutdown(struct venus_core *core); int venus_set_hw_state(struct venus_core *core, bool suspend); static inline int venus_set_hw_state_suspend(struct venus_core *core) diff --git a/drivers/media/platform/qcom/venus/hfi_venus_io.h b/drivers/media/platform/qcom/venus/hfi_venus_io.h index 483348d..cf63864 100644 --- a/drivers/media/platform/qcom/venus/hfi_venus_io.h +++ b/drivers/media/platform/qcom/venus/hfi_venus_io.h @@ -119,6 +119,7 @@ #define WRAPPER_NP_START_ADDR (WRAPPER_BASE + 0x1030) #define WRAPPER_NP_END_ADDR (WRAPPER_BASE + 0x1034) #define WRAPPER_A9SS_SW_RESET (WRAPPER_BASE + 0x3000) +#define WRAPPER_A9SS_SW_RESET_BIT BIT(4) /* Venus 4xx */ #define WRAPPER_VCODEC0_MMCC_POWER_STATUS (WRAPPER_BASE + 0x90) -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project