From patchwork Tue Aug 16 11:17:02 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Peter Antoine X-Patchwork-Id: 9283661 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 A45E560839 for ; Tue, 16 Aug 2016 11:17:17 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 922A728705 for ; Tue, 16 Aug 2016 11:17:17 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8710428713; Tue, 16 Aug 2016 11:17:17 +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 9D4B928705 for ; Tue, 16 Aug 2016 11:17:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A73D16E1E0; Tue, 16 Aug 2016 11:17:15 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTP id B24EF6E683 for ; Tue, 16 Aug 2016 11:17:14 +0000 (UTC) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga102.fm.intel.com with ESMTP; 16 Aug 2016 04:17:14 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos; i="5.28,529,1464678000"; d="scan'208"; a="1036375659" Received: from peterant-linux2.isw.intel.com ([10.102.226.41]) by orsmga002.jf.intel.com with ESMTP; 16 Aug 2016 04:17:14 -0700 From: Peter Antoine To: intel-gfx@lists.freedesktop.org Date: Tue, 16 Aug 2016 12:17:02 +0100 Message-Id: <1471346225-17078-4-git-send-email-peter.antoine@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1471346225-17078-1-git-send-email-peter.antoine@intel.com> References: <1471346225-17078-1-git-send-email-peter.antoine@intel.com> MIME-Version: 1.0 Cc: Alex Dai Subject: [Intel-gfx] [PATCH v6 3/6] 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 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. 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.c | 3 + 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 | 44 ++++++ drivers/gpu/drm/i915/intel_huc_loader.c | 268 ++++++++++++++++++++++++++++++++ 8 files changed, 327 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 3412413..7d683bf 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -51,6 +51,7 @@ 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.c b/drivers/gpu/drm/i915/i915_drv.c index 13ae340..499a6ff 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -628,6 +628,7 @@ static int i915_load_modeset_init(struct drm_device *dev) * working irqs for e.g. gmbus and dp aux transfers. */ intel_modeset_init(dev); + intel_huc_init(dev); intel_guc_init(dev); ret = i915_gem_init(dev); @@ -653,6 +654,7 @@ static int i915_load_modeset_init(struct drm_device *dev) cleanup_gem: i915_gem_fini(dev); cleanup_irq: + intel_huc_fini(dev); intel_guc_fini(dev); drm_irq_uninstall(dev); intel_teardown_gmbus(dev); @@ -1314,6 +1316,7 @@ void i915_driver_unload(struct drm_device *dev) /* Flush any outstanding unpin_work. */ drain_workqueue(dev_priv->wq); + intel_huc_fini(dev); intel_guc_fini(dev); i915_gem_fini(dev); intel_fbc_cleanup_cfb(dev_priv); diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 35caa9b..a60b504 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -55,6 +55,7 @@ #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" @@ -1727,6 +1728,7 @@ struct drm_i915_private { struct intel_gvt gvt; + struct intel_huc huc; struct intel_guc guc; struct intel_csr csr; @@ -2800,6 +2802,7 @@ struct drm_i915_cmd_table { #define HAS_GUC(dev) (IS_GEN9(dev)) #define HAS_GUC_UCODE(dev) (HAS_GUC(dev)) #define HAS_GUC_SCHED(dev) (HAS_GUC(dev)) +#define HAS_HUC_UCODE(dev) (HAS_GUC(dev)) #define HAS_RESOURCE_STREAMER(dev) (IS_HASWELL(dev) || \ INTEL_INFO(dev)->gen >= 8) diff --git a/drivers/gpu/drm/i915/i915_guc_reg.h b/drivers/gpu/drm/i915/i915_guc_reg.h index cf5a65b..51533f1 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 1f01478..efddaed 100644 --- a/drivers/gpu/drm/i915/intel_guc.h +++ b/drivers/gpu/drm/i915/intel_guc.h @@ -158,6 +158,7 @@ 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 889b48b..84d46da 100644 --- a/drivers/gpu/drm/i915/intel_guc_loader.c +++ b/drivers/gpu/drm/i915/intel_guc_loader.c @@ -283,7 +283,8 @@ 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. @@ -308,7 +309,7 @@ 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; @@ -490,6 +491,7 @@ int intel_guc_setup(struct drm_device *dev) 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..946caa7 --- /dev/null +++ b/drivers/gpu/drm/i915/intel_huc.h @@ -0,0 +1,44 @@ +/* + * Copyright © 2014 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 */ +}; + +extern void intel_huc_init(struct drm_device *dev); +extern int intel_huc_load(struct drm_device *dev); +extern void intel_huc_auth(struct drm_device *dev); +extern void intel_huc_fini(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..1aaff67 --- /dev/null +++ b/drivers/gpu/drm/i915/intel_huc_loader.c @@ -0,0 +1,268 @@ +/* + * Copyright © 2014 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: + * On supported platforms, i915's job is to load the firmware stored on the + * file system and assist with authentication. It is up to userspace to + * detect the presence of HuC support on a platform, on their own. + * For debugging, i915 provides a debugfs file, i915_huc_load_status_info + * which displays the firmware load status. + * + * The same firmware loader is used as the GuC. Firmware * binary is fetched by + * the loader asynchronously from the driver init process. 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 I915_SKL_HUC_UCODE "i915/skl_huc_ver01_07_1398.bin" +MODULE_FIRMWARE(I915_SKL_HUC_UCODE); + +/** + * intel_huc_load_ucode() - DMA's the firmware + * @dev: 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); + + WARN_ON(!mutex_is_locked(&dev_priv->drm.struct_mutex)); + 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_ucode_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 = 1; + huc_fw->minor_ver_wanted = 7; + } + + if (fw_path == NULL) + return; + + 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_ucode_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) + drm_gem_object_unreference(&huc_fw->uc_fw_obj->base); + huc_fw->uc_fw_obj = NULL; + mutex_unlock(&dev->struct_mutex); + + huc_fw->fetch_status = UC_FIRMWARE_NONE; +}