From patchwork Wed Nov 23 22:27:38 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Srivatsa, Anusha" X-Patchwork-Id: 9444455 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 271FC60778 for ; Wed, 23 Nov 2016 22:28:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1F0E627DCE for ; Wed, 23 Nov 2016 22:28:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 13E1127E15; Wed, 23 Nov 2016 22:28:07 +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=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 0CFCC27DCE for ; Wed, 23 Nov 2016 22:28:06 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 208B16E93B; Wed, 23 Nov 2016 22:28:00 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by gabe.freedesktop.org (Postfix) with ESMTPS id C76C66E026 for ; Wed, 23 Nov 2016 22:27:52 +0000 (UTC) Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga105.fm.intel.com with ESMTP; 23 Nov 2016 14:27:52 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,540,1473145200"; d="scan'208";a="33903930" Received: from anusha.jf.intel.com ([10.7.198.172]) by orsmga004.jf.intel.com with ESMTP; 23 Nov 2016 14:27:52 -0800 From: Anusha Srivatsa To: intel-gfx@lists.freedesktop.org Date: Wed, 23 Nov 2016 14:27:38 -0800 Message-Id: <1479940063-2961-4-git-send-email-anusha.srivatsa@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1479940063-2961-1-git-send-email-anusha.srivatsa@intel.com> References: <1479940063-2961-1-git-send-email-anusha.srivatsa@intel.com> MIME-Version: 1.0 Cc: Alex Dai , Peter Antoine Subject: [Intel-gfx] [PATCH 3/8] drm/i915/huc: Add HuC fw loading support X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP From: Peter Antoine The HuC loading process is similar to GuC. The intel_uc_fw_fetch() is used for both cases. HuC loading needs to be before GuC loading. The WOPCM setting must be done early before loading any of them. v2: rebased on-top of drm-intel-nightly. removed if(HAS_GUC()) before the guc call. (D.Gordon) update huc_version number of format. v3: rebased to drm-intel-nightly, changed the file name format to match the one in the huc package. Changed dev->dev_private to to_i915() v4: moved function back to where it was. change wait_for_atomic to wait_for. v5: rebased + comment changes. v7: rebased. v8: rebased. v9: rebased. Changed the year in the copyright message to reflect the right year.Correct the comments,remove the unwanted WARN message, replace drm_gem_object_unreference() with i915_gem_object_put().Make the prototypes in intel_huc.h non-extern. v10: rebased. Update the file construction done by HuC. It is similar to GuC.Adopted the approach used in- https://patchwork.freedesktop.org/patch/104355/ v11: Fix warnings remove old declaration v12: Change dev to dev_priv in macro definition. Corrected comments. v13: rebased. Cc: Tvrtko Ursulin Tested-by: Xiang Haihao Signed-off-by: Anusha Srivatsa Signed-off-by: Alex Dai Signed-off-by: Peter Antoine Reviewed-by: Dave Gordon --- drivers/gpu/drm/i915/Makefile | 1 + drivers/gpu/drm/i915/i915_drv.h | 3 + drivers/gpu/drm/i915/i915_guc_reg.h | 3 + drivers/gpu/drm/i915/intel_guc.h | 1 + drivers/gpu/drm/i915/intel_guc_loader.c | 6 +- drivers/gpu/drm/i915/intel_huc.h | 42 +++++ drivers/gpu/drm/i915/intel_huc_loader.c | 266 ++++++++++++++++++++++++++++++++ 7 files changed, 320 insertions(+), 2 deletions(-) create mode 100644 drivers/gpu/drm/i915/intel_huc.h create mode 100644 drivers/gpu/drm/i915/intel_huc_loader.c diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index 580602d..c60e681 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -56,6 +56,7 @@ i915-y += i915_cmd_parser.o \ # general-purpose microcontroller (GuC) support i915-y += intel_guc_loader.o \ + intel_huc_loader.o \ i915_guc_submission.o # autogenerated null render state diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index c44f241..4d4e0a2 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -56,6 +56,7 @@ #include "intel_bios.h" #include "intel_dpll_mgr.h" #include "intel_guc.h" +#include "intel_huc.h" #include "intel_lrc.h" #include "intel_ringbuffer.h" @@ -1915,6 +1916,7 @@ struct drm_i915_private { struct intel_gvt *gvt; + struct intel_huc huc; struct intel_guc guc; struct intel_csr csr; @@ -2768,6 +2770,7 @@ intel_info(const struct drm_i915_private *dev_priv) #define HAS_GUC(dev_priv) ((dev_priv)->info.has_guc) #define HAS_GUC_UCODE(dev_priv) (HAS_GUC(dev_priv)) #define HAS_GUC_SCHED(dev_priv) (HAS_GUC(dev_priv)) +#define HAS_HUC_UCODE(dev_priv) (HAS_GUC(dev_priv)) #define HAS_RESOURCE_STREAMER(dev_priv) ((dev_priv)->info.has_resource_streamer) diff --git a/drivers/gpu/drm/i915/i915_guc_reg.h b/drivers/gpu/drm/i915/i915_guc_reg.h index a47e1e4..64e942a 100644 --- a/drivers/gpu/drm/i915/i915_guc_reg.h +++ b/drivers/gpu/drm/i915/i915_guc_reg.h @@ -61,9 +61,12 @@ #define DMA_ADDRESS_SPACE_GTT (8 << 16) #define DMA_COPY_SIZE _MMIO(0xc310) #define DMA_CTRL _MMIO(0xc314) +#define HUC_UKERNEL (1<<9) #define UOS_MOVE (1<<4) #define START_DMA (1<<0) #define DMA_GUC_WOPCM_OFFSET _MMIO(0xc340) +#define HUC_LOADING_AGENT_VCR (0<<1) +#define HUC_LOADING_AGENT_GUC (1<<1) #define GUC_WOPCM_OFFSET_VALUE 0x80000 /* 512KB */ #define GUC_MAX_IDLE_COUNT _MMIO(0xC3E4) diff --git a/drivers/gpu/drm/i915/intel_guc.h b/drivers/gpu/drm/i915/intel_guc.h index 45dfa40..ff6aba6 100644 --- a/drivers/gpu/drm/i915/intel_guc.h +++ b/drivers/gpu/drm/i915/intel_guc.h @@ -183,6 +183,7 @@ extern const char *intel_uc_fw_status_repr(enum intel_uc_fw_status status); extern int intel_guc_suspend(struct drm_device *dev); extern int intel_guc_resume(struct drm_device *dev); void intel_uc_fw_fetch(struct drm_device *dev, struct intel_uc_fw *uc_fw); +u32 guc_wopcm_size(struct drm_i915_private *dev_priv); /* i915_guc_submission.c */ int i915_guc_submission_init(struct drm_i915_private *dev_priv); diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c index 70b372b..090c727 100644 --- a/drivers/gpu/drm/i915/intel_guc_loader.c +++ b/drivers/gpu/drm/i915/intel_guc_loader.c @@ -309,7 +309,8 @@ static int guc_ucode_xfer_dma(struct drm_i915_private *dev_priv, I915_WRITE(DMA_ADDR_1_HIGH, DMA_ADDRESS_SPACE_WOPCM); /* Finally start the DMA */ - I915_WRITE(DMA_CTRL, _MASKED_BIT_ENABLE(UOS_MOVE | START_DMA)); + I915_WRITE(DMA_CTRL, _MASKED_BIT_ENABLE(UOS_MOVE | START_DMA) | + _MASKED_BIT_DISABLE(HUC_UKERNEL)); /* * Wait for the DMA to complete & the GuC to start up. @@ -334,7 +335,7 @@ static int guc_ucode_xfer_dma(struct drm_i915_private *dev_priv, return ret; } -static u32 guc_wopcm_size(struct drm_i915_private *dev_priv) +u32 guc_wopcm_size(struct drm_i915_private *dev_priv) { u32 wopcm_size = GUC_WOPCM_TOP; @@ -512,6 +513,7 @@ int intel_guc_setup(struct drm_device *dev) if (err) goto fail; + intel_huc_load(dev); err = guc_ucode_xfer(dev_priv); if (!err) break; diff --git a/drivers/gpu/drm/i915/intel_huc.h b/drivers/gpu/drm/i915/intel_huc.h new file mode 100644 index 0000000..3ce0299 --- /dev/null +++ b/drivers/gpu/drm/i915/intel_huc.h @@ -0,0 +1,42 @@ +/* + * Copyright © 2016 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + * + */ +#ifndef _INTEL_HUC_H_ +#define _INTEL_HUC_H_ + +#include "intel_guc.h" + +#define HUC_STATUS2 _MMIO(0xD3B0) +#define HUC_FW_VERIFIED (1<<7) + +struct intel_huc { + /* Generic uC firmware management */ + struct intel_uc_fw huc_fw; + + /* HuC-specific additions */ +}; + +void intel_huc_init(struct drm_device *dev); +void intel_huc_fini(struct drm_device *dev); +int intel_huc_load(struct drm_device *dev); +#endif diff --git a/drivers/gpu/drm/i915/intel_huc_loader.c b/drivers/gpu/drm/i915/intel_huc_loader.c new file mode 100644 index 0000000..1c9c096 --- /dev/null +++ b/drivers/gpu/drm/i915/intel_huc_loader.c @@ -0,0 +1,266 @@ +/* + * Copyright © 2016 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + * + */ +#include +#include "i915_drv.h" +#include "intel_huc.h" + +/** + * DOC: HuC Firmware + * + * Motivation: + * GEN9 introduces a new dedicated firmware for usage in media HEVC (High + * Efficiency Video Coding) operations. Userspace can use the firmware + * capabilities by adding HuC specific commands to batch buffers. + * + * Implementation: + * The same firmware loader is used as the GuC. However, the actual + * loading to HW is deferred until GEM initialization is done. + * + * Note that HuC firmware loading must be done before GuC loading. + */ + +#define SKL_FW_MAJOR 01 +#define SKL_FW_MINOR 07 +#define SKL_BLD_NUM 1398 + +#define HUC_FW_PATH(platform, major, minor, bld_num) \ + "i915/" __stringify(platform) "_huc_ver" __stringify(major) "_" \ + __stringify(minor) "_" __stringify(bld_num) ".bin" + +#define I915_SKL_HUC_UCODE HUC_FW_PATH(skl, SKL_FW_MAJOR, \ + SKL_FW_MINOR, SKL_BLD_NUM) +MODULE_FIRMWARE(I915_SKL_HUC_UCODE); + +/** + * huc_ucode_xfer() - DMA's the firmware + * @dev_priv: the drm device + * + * This function takes the gem object containing the firmware, sets up the DMA + * engine MMIO, triggers the DMA operation and waits for it to finish. + * + * Transfer the firmware image to RAM for execution by the microcontroller. + * + * Return: 0 on success, non-zero on failure + */ + +static int huc_ucode_xfer(struct drm_i915_private *dev_priv) +{ + struct intel_uc_fw *huc_fw = &dev_priv->huc.huc_fw; + struct i915_vma *vma; + unsigned long offset = 0; + u32 size; + int ret; + + ret = i915_gem_object_set_to_gtt_domain(huc_fw->uc_fw_obj, false); + if (ret) { + DRM_DEBUG_DRIVER("set-domain failed %d\n", ret); + return ret; + } + + vma = i915_gem_object_ggtt_pin(huc_fw->uc_fw_obj, NULL, 0, 0, 0); + if (IS_ERR(vma)) { + DRM_DEBUG_DRIVER("pin failed %d\n", (int)PTR_ERR(vma)); + return PTR_ERR(vma); + } + + /* Invalidate GuC TLB to let GuC take the latest updates to GTT. */ + I915_WRITE(GEN8_GTCR, GEN8_GTCR_INVALIDATE); + + intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); + + /* init WOPCM */ + I915_WRITE(GUC_WOPCM_SIZE, guc_wopcm_size(dev_priv)); + I915_WRITE(DMA_GUC_WOPCM_OFFSET, GUC_WOPCM_OFFSET_VALUE | + HUC_LOADING_AGENT_GUC); + + /* Set the source address for the uCode */ + offset = i915_ggtt_offset(vma) + huc_fw->header_offset; + I915_WRITE(DMA_ADDR_0_LOW, lower_32_bits(offset)); + I915_WRITE(DMA_ADDR_0_HIGH, upper_32_bits(offset) & 0xFFFF); + + /* Hardware doesn't look at destination address for HuC. Set it to 0, + * but still program the correct address space. + */ + I915_WRITE(DMA_ADDR_1_LOW, 0); + I915_WRITE(DMA_ADDR_1_HIGH, DMA_ADDRESS_SPACE_WOPCM); + + size = huc_fw->header_size + huc_fw->ucode_size; + I915_WRITE(DMA_COPY_SIZE, size); + + /* Start the DMA */ + I915_WRITE(DMA_CTRL, _MASKED_BIT_ENABLE(HUC_UKERNEL | START_DMA)); + + /* Wait for DMA to finish */ + ret = wait_for((I915_READ(DMA_CTRL) & START_DMA) == 0, 100); + + DRM_DEBUG_DRIVER("HuC DMA transfer wait over with ret %d\n", ret); + + intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); + + /* + * We keep the object pages for reuse during resume. But we can unpin it + * now that DMA has completed, so it doesn't continue to take up space. + */ + i915_vma_unpin(vma); + + return ret; +} + +/** + * intel_huc_init() - initiate HuC firmware loading request + * @dev: the drm device + * + * Called early during driver load, but after GEM is initialised. The loading + * will continue only when driver explicitly specify firmware name and version. + * All other cases are considered as UC_FIRMWARE_NONE either because HW is not + * capable or driver yet support it. And there will be no error message for + * UC_FIRMWARE_NONE cases. + * + * The DMA-copying to HW is done later when intel_huc_load() is called. + */ +void intel_huc_init(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = to_i915(dev); + struct intel_huc *huc = &dev_priv->huc; + struct intel_uc_fw *huc_fw = &huc->huc_fw; + const char *fw_path = NULL; + + huc_fw->uc_dev = dev; + huc_fw->uc_fw_path = NULL; + huc_fw->fetch_status = UC_FIRMWARE_NONE; + huc_fw->load_status = UC_FIRMWARE_NONE; + huc_fw->fw_type = UC_FW_TYPE_HUC; + + if (!HAS_HUC_UCODE(dev_priv)) + return; + + if (IS_SKYLAKE(dev_priv)) { + fw_path = I915_SKL_HUC_UCODE; + huc_fw->major_ver_wanted = SKL_FW_MAJOR; + huc_fw->minor_ver_wanted = SKL_FW_MINOR; + } + + huc_fw->uc_fw_path = fw_path; + huc_fw->fetch_status = UC_FIRMWARE_PENDING; + + DRM_DEBUG_DRIVER("HuC firmware pending, path %s\n", fw_path); + + intel_uc_fw_fetch(dev, huc_fw); +} + +/** + * intel_huc_load() - load HuC uCode to device + * @dev: the drm device + * + * Called from gem_init_hw() during driver loading and also after a GPU reset. + * Be note that HuC loading must be done before GuC loading. + * + * The firmware image should have already been fetched into memory by the + * earlier call to intel_huc_init(), so here we need only check that + * is succeeded, and then transfer the image to the h/w. + * + * Return: non-zero code on error + */ +int intel_huc_load(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = to_i915(dev); + struct intel_uc_fw *huc_fw = &dev_priv->huc.huc_fw; + int err; + + if (huc_fw->fetch_status == UC_FIRMWARE_NONE) + return 0; + + DRM_DEBUG_DRIVER("%s fw status: fetch %s, load %s\n", + huc_fw->uc_fw_path, + intel_uc_fw_status_repr(huc_fw->fetch_status), + intel_uc_fw_status_repr(huc_fw->load_status)); + + if (huc_fw->fetch_status == UC_FIRMWARE_SUCCESS && + huc_fw->load_status == UC_FIRMWARE_FAIL) + return -ENOEXEC; + + huc_fw->load_status = UC_FIRMWARE_PENDING; + + switch (huc_fw->fetch_status) { + case UC_FIRMWARE_FAIL: + /* something went wrong :( */ + err = -EIO; + goto fail; + + case UC_FIRMWARE_NONE: + case UC_FIRMWARE_PENDING: + default: + /* "can't happen" */ + WARN_ONCE(1, "HuC fw %s invalid fetch_status %s [%d]\n", + huc_fw->uc_fw_path, + intel_uc_fw_status_repr(huc_fw->fetch_status), + huc_fw->fetch_status); + err = -ENXIO; + goto fail; + + case UC_FIRMWARE_SUCCESS: + break; + } + + err = huc_ucode_xfer(dev_priv); + if (err) + goto fail; + + huc_fw->load_status = UC_FIRMWARE_SUCCESS; + + DRM_DEBUG_DRIVER("%s fw status: fetch %s, load %s\n", + huc_fw->uc_fw_path, + intel_uc_fw_status_repr(huc_fw->fetch_status), + intel_uc_fw_status_repr(huc_fw->load_status)); + + return 0; + +fail: + if (huc_fw->load_status == UC_FIRMWARE_PENDING) + huc_fw->load_status = UC_FIRMWARE_FAIL; + + DRM_ERROR("Failed to complete HuC uCode load with ret %d\n", err); + + return err; +} + +/** + * intel_huc_fini() - clean up resources allocated for HuC + * @dev: the drm device + * + * Cleans up by releasing the huc firmware GEM obj. + */ +void intel_huc_fini(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = to_i915(dev); + struct intel_uc_fw *huc_fw = &dev_priv->huc.huc_fw; + + mutex_lock(&dev->struct_mutex); + if (huc_fw->uc_fw_obj) + i915_gem_object_put(huc_fw->uc_fw_obj); + huc_fw->uc_fw_obj = NULL; + mutex_unlock(&dev->struct_mutex); + + huc_fw->fetch_status = UC_FIRMWARE_NONE; +}