From patchwork Mon Oct 8 13:32:51 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vikash Garodia X-Patchwork-Id: 10630797 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 613BE112B for ; Mon, 8 Oct 2018 13:33:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 520B5285C4 for ; Mon, 8 Oct 2018 13:33:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4635429333; Mon, 8 Oct 2018 13:33:42 +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=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham 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 79C18285C4 for ; Mon, 8 Oct 2018 13:33:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726731AbeJHUpS (ORCPT ); Mon, 8 Oct 2018 16:45:18 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:47880 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726727AbeJHUpR (ORCPT ); Mon, 8 Oct 2018 16:45:17 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id A7C8960BFA; Mon, 8 Oct 2018 13:33:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1539005611; bh=6ipA9Eyia5NktfBicioIfIQFgf0NR8iSQ02TiMfT56s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bsg2rIK/Nxl5Cx2xia6TCMX+HgP5zLzRHTpYkyMEvC6mnTNrVqhdGouWixSDiVL4A iy6TNYhj8FBg9zh4JXMiUMiuF0xQqikLESX+3DOREVcxpvxyC2KQlzQhrKmBIJMAj0 yHf1DhuoXXvESwwhS+YCLnAqmQ4gmCSxRAFoC/Q0= 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 68E2C60866; Mon, 8 Oct 2018 13:33:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1539005609; bh=6ipA9Eyia5NktfBicioIfIQFgf0NR8iSQ02TiMfT56s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Bw8ZZjcUz1quVqTc4XUHzr91ES445rnLCRJ26eLTRaBr3yLxnmZGdMYtjtyRQHCdO 3Z1dD6GBVgbvKjyQtFeLHjXK5mRvLrDvlEoXobuk7pCmgXq0Ay5CJArO/4vdtAAoaO 0j+a2ahSTrKio2n9OOvoxoB4+ElpqMq35fc0KCnE= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 68E2C60866 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 Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, acourbot@chromium.org, vgarodia@codeaurora.org Subject: [PATCH v11 4/5] venus: firmware: add no TZ boot and shutdown routine Date: Mon, 8 Oct 2018 19:02:51 +0530 Message-Id: <1539005572-803-5-git-send-email-vgarodia@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1539005572-803-1-git-send-email-vgarodia@codeaurora.org> References: <1539005572-803-1-git-send-email-vgarodia@codeaurora.org> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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 094c2ec..475f354 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 use_tz; struct mutex lock; diff --git a/drivers/media/platform/qcom/venus/firmware.c b/drivers/media/platform/qcom/venus/firmware.c index 98b3b16..c29acfd 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->use_tz) + ret = qcom_scm_pas_auth_and_reset(VENUS_PAS_ID); + else + ret = venus_boot_no_tz(core, mem_phys, mem_size); + + 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->use_tz) + ret = qcom_scm_pas_shutdown(VENUS_PAS_ID); + else + ret = venus_shutdown_no_tz(core); + + 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; @@ -182,10 +246,27 @@ 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->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); @@ -194,8 +275,15 @@ 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 d69f51b..ef0c72a 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_NONPIX_START_ADDR (WRAPPER_BASE + 0x1030) #define WRAPPER_NONPIX_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)