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 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 75737C04A68 for ; Thu, 28 Jul 2022 13:18:26 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2CAC7931A6; Thu, 28 Jul 2022 13:18:11 +0000 (UTC) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id 236128B6F4 for ; Thu, 28 Jul 2022 13:17:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1659014262; x=1690550262; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=mmqbMHbo19fvO2VerzjPbnYWCIo4ZSl5kKa6cd+X1VM=; b=deSJ5v3wR0sf6hr0sOO0dVusIhFB9fH5xV9Lwcm/iBGAGMs8u86jk5Y3 O2s0bvv/lwg9RvzVlrqVM+Kw1mgE2VFvXfLSsfGJvBUcrcEHGlFvY+pgB K8wFVAHx5EVmTgotDlMlk/5o3p2AYwW4bAejOis/ev4lXvRfy3TkLFmqE RGQsl0wi9sl5rLiJvil5pJBHdt+nQ4W/Qd39z7z5jBaKcfqsmZoI98Itt RkN4pQESqq02onKeQcGwQ99FbCzaf7TGgNBgmoiBDYdoGvCpJ0DDJDWgV N9qt2fFiwcj9AtSGXA1YIY5klmjnHJ5CrHBxEUtA8DSFXY3EGY2tWu7ri w==; X-IronPort-AV: E=McAfee;i="6400,9594,10421"; a="288520412" X-IronPort-AV: E=Sophos;i="5.93,198,1654585200"; d="scan'208";a="288520412" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Jul 2022 06:17:41 -0700 X-IronPort-AV: E=Sophos;i="5.93,198,1654585200"; d="scan'208";a="659722692" Received: from jlawryno-desktop.igk.intel.com ([172.22.229.64]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Jul 2022 06:17:40 -0700 From: Jacek Lawrynowicz To: dri-devel@lists.freedesktop.org, airlied@linux.ie, daniel@ffwll.ch Subject: [PATCH v1 7/7] drm/vpu: Add PM support Date: Thu, 28 Jul 2022 15:17:09 +0200 Message-Id: <20220728131709.1087188-8-jacek.lawrynowicz@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220728131709.1087188-1-jacek.lawrynowicz@linux.intel.com> References: <20220728131709.1087188-1-jacek.lawrynowicz@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: andrzej.kacprowski@linux.intel.com, Jacek Lawrynowicz , stanislaw.gruszka@linux.intel.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" - Implement cold and warm firmware boot flows - Add hang recovery support - Add runtime power management support Signed-off-by: Krystian Pradzynski Signed-off-by: Jacek Lawrynowicz --- drivers/gpu/drm/vpu/Makefile | 3 +- drivers/gpu/drm/vpu/vpu_drv.c | 32 ++- drivers/gpu/drm/vpu/vpu_drv.h | 1 + drivers/gpu/drm/vpu/vpu_fw.c | 4 + drivers/gpu/drm/vpu/vpu_hw_mtl.c | 12 ++ drivers/gpu/drm/vpu/vpu_ipc.c | 6 + drivers/gpu/drm/vpu/vpu_job.c | 17 +- drivers/gpu/drm/vpu/vpu_mmu.c | 4 + drivers/gpu/drm/vpu/vpu_pm.c | 353 +++++++++++++++++++++++++++++++ drivers/gpu/drm/vpu/vpu_pm.h | 38 ++++ 10 files changed, 466 insertions(+), 4 deletions(-) create mode 100644 drivers/gpu/drm/vpu/vpu_pm.c create mode 100644 drivers/gpu/drm/vpu/vpu_pm.h diff --git a/drivers/gpu/drm/vpu/Makefile b/drivers/gpu/drm/vpu/Makefile index 70493dacecda..f8218a0b0729 100644 --- a/drivers/gpu/drm/vpu/Makefile +++ b/drivers/gpu/drm/vpu/Makefile @@ -10,6 +10,7 @@ intel_vpu-y := \ vpu_job.o \ vpu_jsm_msg.o \ vpu_mmu.o \ - vpu_mmu_context.o + vpu_mmu_context.o \ + vpu_pm.o obj-$(CONFIG_DRM_VPU) += intel_vpu.o diff --git a/drivers/gpu/drm/vpu/vpu_drv.c b/drivers/gpu/drm/vpu/vpu_drv.c index 74db0cb18491..d62aed956f02 100644 --- a/drivers/gpu/drm/vpu/vpu_drv.c +++ b/drivers/gpu/drm/vpu/vpu_drv.c @@ -23,6 +23,7 @@ #include "vpu_jsm_msg.h" #include "vpu_mmu.h" #include "vpu_mmu_context.h" +#include "vpu_pm.h" #ifndef DRIVER_VERSION_STR #define DRIVER_VERSION_STR __stringify(DRM_VPU_DRIVER_MAJOR) "." \ @@ -80,9 +81,11 @@ static void file_priv_release(struct kref *ref) vpu_dbg(FILE, "file_priv release: ctx %u\n", file_priv->ctx.id); if (file_priv->ctx.id) { + vpu_rpm_get(vdev); vpu_cmdq_release_all(file_priv); vpu_bo_remove_all_bos_from_context(&file_priv->ctx); vpu_mmu_user_context_fini(file_priv); + vpu_rpm_put(vdev); } kfree(file_priv); @@ -428,6 +431,10 @@ static int vpu_dev_init(struct vpu_device *vdev) if (!vdev->ipc) return -ENOMEM; + vdev->pm = devm_kzalloc(vdev->drm.dev, sizeof(*vdev->pm), GFP_KERNEL); + if (!vdev->pm) + return -ENOMEM; + vdev->hw->ops = &vpu_hw_mtl_ops; vdev->platform = VPU_PLATFORM_INVALID; @@ -486,10 +493,16 @@ static int vpu_dev_init(struct vpu_device *vdev) goto err_fw_fini; } + ret = vpu_pm_init(vdev); + if (ret) { + vpu_err(vdev, "Failed to initialize PM: %d\n", ret); + goto err_ipc_fini; + } + ret = vpu_job_done_thread_init(vdev); if (ret) { vpu_err(vdev, "Failed to initialize job done thread: %d\n", ret); - goto err_ipc_fini; + goto err_pm_fini; } ret = vpu_fw_load(vdev); @@ -508,6 +521,8 @@ static int vpu_dev_init(struct vpu_device *vdev) err_job_done_thread_fini: vpu_job_done_thread_fini(vdev); +err_pm_fini: + vpu_pm_fini(vdev); err_ipc_fini: vpu_ipc_fini(vdev); err_fw_fini: @@ -530,6 +545,7 @@ static void vpu_dev_fini(struct vpu_device *vdev) vpu_shutdown(vdev); vpu_job_done_thread_fini(vdev); + vpu_pm_fini(vdev); vpu_ipc_fini(vdev); vpu_fw_fini(vdev); vpu_mmu_fini(vdev); @@ -584,11 +600,25 @@ static void vpu_remove(struct pci_dev *pdev) vpu_dev_fini(vdev); } +static const struct dev_pm_ops vpu_drv_pci_pm = { + SET_SYSTEM_SLEEP_PM_OPS(vpu_pm_suspend_cb, vpu_pm_resume_cb) + SET_RUNTIME_PM_OPS(vpu_pm_runtime_suspend_cb, vpu_pm_runtime_resume_cb, NULL) +}; + +static const struct pci_error_handlers vpu_drv_pci_err = { + .reset_prepare = vpu_pm_reset_prepare_cb, + .reset_done = vpu_pm_reset_done_cb, +}; + static struct pci_driver vpu_pci_driver = { .name = KBUILD_MODNAME, .id_table = vpu_pci_ids, .probe = vpu_probe, .remove = vpu_remove, + .driver = { + .pm = &vpu_drv_pci_pm, + }, + .err_handler = &vpu_drv_pci_err, }; static __init int vpu_init(void) diff --git a/drivers/gpu/drm/vpu/vpu_drv.h b/drivers/gpu/drm/vpu/vpu_drv.h index f4898399e64b..52593831dc6a 100644 --- a/drivers/gpu/drm/vpu/vpu_drv.h +++ b/drivers/gpu/drm/vpu/vpu_drv.h @@ -89,6 +89,7 @@ struct vpu_device { struct vpu_mmu_info *mmu; struct vpu_fw_info *fw; struct vpu_ipc_info *ipc; + struct vpu_pm_info *pm; struct vpu_mmu_context gctx; struct xarray context_xa; diff --git a/drivers/gpu/drm/vpu/vpu_fw.c b/drivers/gpu/drm/vpu/vpu_fw.c index 153aafcf3423..4c10a6f963bc 100644 --- a/drivers/gpu/drm/vpu/vpu_fw.c +++ b/drivers/gpu/drm/vpu/vpu_fw.c @@ -14,6 +14,7 @@ #include "vpu_gem.h" #include "vpu_hw.h" #include "vpu_ipc.h" +#include "vpu_pm.h" #define FW_MAX_NAMES 3 #define FW_GLOBAL_MEM_START (2ull * SZ_1G) @@ -361,9 +362,12 @@ void vpu_fw_boot_params_setup(struct vpu_device *vdev, struct vpu_boot_params *b /* In case of warm boot we only have to reset the entrypoint addr */ if (!vpu_fw_is_cold_boot(vdev)) { boot_params->save_restore_ret_address = 0; + vdev->pm->is_warmboot = true; return; } + vdev->pm->is_warmboot = false; + boot_params->magic = VPU_BOOT_PARAMS_MAGIC; boot_params->vpu_id = to_pci_dev(vdev->drm.dev)->bus->number; boot_params->frequency = vpu_hw_reg_pll_freq_get(vdev); diff --git a/drivers/gpu/drm/vpu/vpu_hw_mtl.c b/drivers/gpu/drm/vpu/vpu_hw_mtl.c index ba24dc29f962..93f1799c7284 100644 --- a/drivers/gpu/drm/vpu/vpu_hw_mtl.c +++ b/drivers/gpu/drm/vpu/vpu_hw_mtl.c @@ -10,6 +10,7 @@ #include "vpu_hw.h" #include "vpu_ipc.h" #include "vpu_mmu.h" +#include "vpu_pm.h" #define TILE_FUSE_ENABLE_BOTH 0x0 #define TILE_FUSE_ENABLE_LOWER 0x1 @@ -916,6 +917,8 @@ static irqreturn_t vpu_hw_mtl_irq_wdt_nce_handler(struct vpu_device *vdev) { vpu_warn_ratelimited(vdev, "WDT NCE irq\n"); + vpu_pm_schedule_recovery(vdev); + return IRQ_HANDLED; } @@ -924,6 +927,7 @@ static irqreturn_t vpu_hw_mtl_irq_wdt_mss_handler(struct vpu_device *vdev) vpu_warn_ratelimited(vdev, "WDT MSS irq\n"); vpu_hw_wdt_disable(vdev); + vpu_pm_schedule_recovery(vdev); return IRQ_HANDLED; } @@ -932,6 +936,8 @@ static irqreturn_t vpu_hw_mtl_irq_noc_firewall_handler(struct vpu_device *vdev) { vpu_warn_ratelimited(vdev, "NOC Firewall irq\n"); + vpu_pm_schedule_recovery(vdev); + return IRQ_HANDLED; } @@ -970,6 +976,7 @@ static irqreturn_t vpu_hw_mtl_irqv_handler(struct vpu_device *vdev, int irq) /* Handler for IRQs from Buttress core (irqB) */ static irqreturn_t vpu_hw_mtl_irqb_handler(struct vpu_device *vdev, int irq) { + bool schedule_recovery = false; u32 status = REGB_RD32(MTL_BUTTRESS_INTERRUPT_STAT) & BUTTRESS_IRQ_MASK; REGB_WR32(MTL_BUTTRESS_INTERRUPT_STAT, status); @@ -980,13 +987,18 @@ static irqreturn_t vpu_hw_mtl_irqb_handler(struct vpu_device *vdev, int irq) if (REG_TEST_FLD(MTL_BUTTRESS_INTERRUPT_STAT, ATS_ERR, status)) { vpu_dbg(IRQ, "ATS_ERR 0x%016llx", REGB_RD64(MTL_BUTTRESS_ATS_ERR_LOG_0)); REGB_WR32(MTL_BUTTRESS_ATS_ERR_CLEAR, 0x1); + schedule_recovery = true; } if (REG_TEST_FLD(MTL_BUTTRESS_INTERRUPT_STAT, UFI_ERR, status)) { vpu_dbg(IRQ, "UFI_ERR 0x%08x", REGB_RD32(MTL_BUTTRESS_UFI_ERR_LOG)); REGB_WR32(MTL_BUTTRESS_UFI_ERR_CLEAR, 0x1); + schedule_recovery = true; } + if (schedule_recovery) + vpu_pm_schedule_recovery(vdev); + return IRQ_HANDLED; } diff --git a/drivers/gpu/drm/vpu/vpu_ipc.c b/drivers/gpu/drm/vpu/vpu_ipc.c index 0a01e5614a5f..db8a18f353b5 100644 --- a/drivers/gpu/drm/vpu/vpu_ipc.c +++ b/drivers/gpu/drm/vpu/vpu_ipc.c @@ -13,6 +13,7 @@ #include "vpu_hw.h" #include "vpu_ipc.h" #include "vpu_jsm_msg.h" +#include "vpu_pm.h" #define IPC_MAX_RX_MSG 128 #define IS_KTHREAD() (get_current()->flags & PF_KTHREAD) @@ -264,6 +265,10 @@ int vpu_ipc_send_receive(struct vpu_device *vdev, struct vpu_jsm_msg *req, vpu_ipc_consumer_add(vdev, &cons, channel); + ret = vpu_rpm_get(vdev); + if (ret < 0) + return ret; + ret = vpu_ipc_send(vdev, &cons, req); if (ret) { vpu_warn(vdev, "IPC send failed: %d\n", ret); @@ -282,6 +287,7 @@ int vpu_ipc_send_receive(struct vpu_device *vdev, struct vpu_jsm_msg *req, } consumer_del: + vpu_rpm_put(vdev); vpu_ipc_consumer_del(vdev, &cons); return ret; diff --git a/drivers/gpu/drm/vpu/vpu_job.c b/drivers/gpu/drm/vpu/vpu_job.c index 16ca280d12b2..5b9fed41d34f 100644 --- a/drivers/gpu/drm/vpu/vpu_job.c +++ b/drivers/gpu/drm/vpu/vpu_job.c @@ -17,6 +17,7 @@ #include "vpu_ipc.h" #include "vpu_job.h" #include "vpu_jsm_msg.h" +#include "vpu_pm.h" #define CMD_BUF_IDX 0 #define JOB_ID_JOB_MASK GENMASK(7, 0) @@ -264,6 +265,9 @@ static void job_release(struct kref *ref) vpu_dbg(KREF, "Job released: id %u\n", job->job_id); kfree(job); + + /* Allow the VPU to get suspended, must be called after vpu_file_priv_put() */ + vpu_rpm_put(vdev); } static void job_put(struct vpu_job *job) @@ -280,11 +284,16 @@ vpu_create_job(struct vpu_file_priv *file_priv, u32 engine_idx, u32 bo_count) struct vpu_device *vdev = file_priv->vdev; struct vpu_job *job; size_t buf_size; + int ret; + + ret = vpu_rpm_get(vdev); + if (ret < 0) + return NULL; buf_size = sizeof(*job) + bo_count * sizeof(struct vpu_bo *); job = kzalloc(buf_size, GFP_KERNEL); if (!job) - return NULL; + goto err_rpm_put; kref_init(&job->ref); @@ -305,6 +314,8 @@ vpu_create_job(struct vpu_file_priv *file_priv, u32 engine_idx, u32 bo_count) err_free_job: kfree(job); +err_rpm_put: + vpu_rpm_put(vdev); return NULL; } @@ -573,8 +584,10 @@ static int vpu_job_done_thread(void *arg) if (!ret) { vpu_job_done_message(vdev, &jsm_msg); } else if (ret == -ETIMEDOUT) { - if (jobs_submitted && !xa_empty(&vdev->submitted_jobs_xa)) + if (jobs_submitted && !xa_empty(&vdev->submitted_jobs_xa)) { vpu_err(vdev, "TDR detected, timeout %d ms", timeout); + vpu_pm_schedule_recovery(vdev); + } } } diff --git a/drivers/gpu/drm/vpu/vpu_mmu.c b/drivers/gpu/drm/vpu/vpu_mmu.c index ace91ee5a857..b0a17d3bc274 100644 --- a/drivers/gpu/drm/vpu/vpu_mmu.c +++ b/drivers/gpu/drm/vpu/vpu_mmu.c @@ -11,6 +11,7 @@ #include "vpu_hw_reg_io.h" #include "vpu_mmu.h" #include "vpu_mmu_context.h" +#include "vpu_pm.h" #define VPU_MMU_IDR0_REF 0x080f3e0f #define VPU_MMU_IDR0_REF_SIMICS 0x080f3e1f @@ -883,6 +884,8 @@ irqreturn_t vpu_mmu_irq_evtq_handler(struct vpu_device *vdev) } while (evtq->prod != evtq->cons); + vpu_pm_schedule_recovery(vdev); + return IRQ_HANDLED; } @@ -901,6 +904,7 @@ irqreturn_t vpu_mmu_irq_gerr_handler(struct vpu_device *vdev) if (REG_TEST_FLD(MTL_VPU_HOST_MMU_GERROR, SFM, active)) { vpu_err_ratelimited(vdev, "MMU has entered service failure mode\n"); + vpu_pm_schedule_recovery(vdev); } if (REG_TEST_FLD(MTL_VPU_HOST_MMU_GERROR, MSI_ABT, active)) diff --git a/drivers/gpu/drm/vpu/vpu_pm.c b/drivers/gpu/drm/vpu/vpu_pm.c new file mode 100644 index 000000000000..59bb2b42291b --- /dev/null +++ b/drivers/gpu/drm/vpu/vpu_pm.c @@ -0,0 +1,353 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright © 2020-2022 Intel Corporation + */ + +#include +#include +#include +#include +#include + +#include "vpu_boot_api.h" +#include "vpu_drv.h" +#include "vpu_hw.h" +#include "vpu_fw.h" +#include "vpu_ipc.h" +#include "vpu_job.h" +#include "vpu_mmu.h" +#include "vpu_pm.h" + +static bool vpu_disable_recovery; +module_param_named_unsafe(disable_recovery, vpu_disable_recovery, bool, 0644); +MODULE_PARM_DESC(disable_recovery, "Disables recovery when VPU hang is detected"); + +#define PM_RESCHEDULE_LIMIT 5 + +static void vpu_pm_prepare_cold_boot(struct vpu_device *vdev) +{ + struct vpu_fw_info *fw = vdev->fw; + + vpu_cmdq_reset_all_contexts(vdev); + vpu_fw_load(vdev); + fw->entry_point = fw->cold_boot_entry_point; +} + +static void vpu_pm_prepare_warm_boot(struct vpu_device *vdev) +{ + struct vpu_fw_info *fw = vdev->fw; + struct vpu_boot_params *bp = fw->mem->kvaddr; + + if (!bp->save_restore_ret_address) { + vpu_pm_prepare_cold_boot(vdev); + return; + } + + vpu_dbg(FW_BOOT, "Save/restore entry point %llx", bp->save_restore_ret_address); + fw->entry_point = bp->save_restore_ret_address; +} + +static int vpu_suspend(struct vpu_device *vdev) +{ + int ret; + + lockdep_assert_held(&vdev->pm->lock); + + ret = vpu_shutdown(vdev); + if (ret) { + vpu_err(vdev, "Failed to shutdown VPU: %d\n", ret); + return ret; + } + + return ret; +} + +static int vpu_resume(struct vpu_device *vdev) +{ + int ret; + + lockdep_assert_held(&vdev->pm->lock); + +retry: + ret = vpu_hw_power_up(vdev); + if (ret) { + vpu_err(vdev, "Failed to power up HW: %d\n", ret); + return ret; + } + + ret = vpu_mmu_enable(vdev); + if (ret) { + vpu_err(vdev, "Failed to resume MMU: %d\n", ret); + vpu_hw_power_down(vdev); + return ret; + } + + ret = vpu_boot(vdev); + if (ret) { + vpu_mmu_disable(vdev); + vpu_hw_power_down(vdev); + if (!vpu_fw_is_cold_boot(vdev)) { + vpu_warn(vdev, "Failed to resume the FW: %d. Retrying cold boot..\n", ret); + vpu_pm_prepare_cold_boot(vdev); + goto retry; + } else { + vpu_err(vdev, "Failed to resume the FW: %d\n", ret); + } + } + + return ret; +} + +static void vpu_pm_recovery_work(struct work_struct *work) +{ + struct vpu_pm_info *pm = container_of(work, struct vpu_pm_info, recovery_work); + struct vpu_device *vdev = pm->vdev; + char *evt[2] = {"VPU_PM_EVENT=VPU_RECOVER", NULL}; + int ret; + + ret = pci_reset_function(to_pci_dev(vdev->drm.dev)); + if (ret) + vpu_err(vdev, "Failed to reset VPU: %d\n", ret); + + atomic_set(&pm->in_recovery, 0); + kobject_uevent_env(&vdev->drm.dev->kobj, KOBJ_CHANGE, evt); +} + +void vpu_pm_schedule_recovery(struct vpu_device *vdev) +{ + struct vpu_pm_info *pm = vdev->pm; + + if (vpu_disable_recovery) { + vpu_err(vdev, "Recovery not available when disable_recovery param is set\n"); + return; + } + + if (vpu_is_fpga(vdev)) { + vpu_err(vdev, "Recovery not available on FPGA\n"); + return; + } + + /* Schedule recovery if it's not in progress */ + if (atomic_cmpxchg(&pm->in_recovery, 0, 1) == 0) { + vpu_hw_irq_disable(vdev); + queue_work(system_long_wq, &pm->recovery_work); + } +} + +int vpu_pm_suspend_cb(struct device *dev) +{ + struct drm_device *drm = dev_get_drvdata(dev); + struct vpu_device *vdev = to_vpu_dev(drm); + int ret; + + vpu_dbg(PM, "Suspend..\n"); + + mutex_lock(&vdev->pm->lock); + + ret = vpu_suspend(vdev); + if (ret && vdev->pm->suspend_reschedule_counter) { + vpu_dbg(PM, "VPU failed to enter idle, rescheduling suspend, retries left %d\n", + vdev->pm->suspend_reschedule_counter); + pm_schedule_suspend(dev, vdev->timeout.reschedule_suspend); + vdev->pm->suspend_reschedule_counter--; + mutex_unlock(&vdev->pm->lock); + return -EBUSY; + } else if (!vdev->pm->suspend_reschedule_counter) { + vpu_warn(vdev, "VPU failed to enter idle, force suspend\n"); + vpu_pm_prepare_cold_boot(vdev); + } else { + vpu_pm_prepare_warm_boot(vdev); + } + + vdev->pm->suspend_reschedule_counter = PM_RESCHEDULE_LIMIT; + + pci_save_state(to_pci_dev(dev)); + pci_set_power_state(to_pci_dev(dev), PCI_D3hot); + + mutex_unlock(&vdev->pm->lock); + + vpu_dbg(PM, "Suspend done.\n"); + + return ret; +} + +int vpu_pm_resume_cb(struct device *dev) +{ + struct drm_device *drm = dev_get_drvdata(dev); + struct vpu_device *vdev = to_vpu_dev(drm); + int ret; + + vpu_dbg(PM, "Resume..\n"); + + mutex_lock(&vdev->pm->lock); + + pci_set_power_state(to_pci_dev(dev), PCI_D0); + pci_restore_state(to_pci_dev(dev)); + + ret = vpu_resume(vdev); + if (ret) + vpu_err(vdev, "Failed to resume: %d\n", ret); + + mutex_unlock(&vdev->pm->lock); + + vpu_dbg(PM, "Resume done.\n"); + + return ret; +} + +int vpu_pm_runtime_suspend_cb(struct device *dev) +{ + struct drm_device *drm = dev_get_drvdata(dev); + struct vpu_device *vdev = to_vpu_dev(drm); + int ret; + + vpu_dbg(PM, "Runtime suspend..\n"); + + if (!vpu_hw_is_idle(vdev) && vdev->pm->suspend_reschedule_counter) { + vpu_dbg(PM, "VPU failed to enter idle, rescheduling suspend, retries left %d\n", + vdev->pm->suspend_reschedule_counter); + pm_schedule_suspend(dev, vdev->timeout.reschedule_suspend); + vdev->pm->suspend_reschedule_counter--; + return -EAGAIN; + } + + mutex_lock(&vdev->pm->lock); + + ret = vpu_suspend(vdev); + if (ret) + vpu_err(vdev, "Failed to set suspend VPU: %d\n", ret); + + if (!vdev->pm->suspend_reschedule_counter) { + vpu_warn(vdev, "VPU failed to enter idle, force suspended.\n"); + vpu_pm_prepare_cold_boot(vdev); + } else { + vpu_pm_prepare_warm_boot(vdev); + } + + vdev->pm->suspend_reschedule_counter = PM_RESCHEDULE_LIMIT; + mutex_unlock(&vdev->pm->lock); + + vpu_dbg(PM, "Runtime suspend done.\n"); + + return 0; +} + +int vpu_pm_runtime_resume_cb(struct device *dev) +{ + struct drm_device *drm = dev_get_drvdata(dev); + struct vpu_device *vdev = to_vpu_dev(drm); + int ret; + + vpu_dbg(PM, "Runtime resume..\n"); + + mutex_lock(&vdev->pm->lock); + + ret = vpu_resume(vdev); + if (ret) + vpu_err(vdev, "Failed to set RESUME state: %d\n", ret); + + mutex_unlock(&vdev->pm->lock); + + vpu_dbg(PM, "Runtime resume done.\n"); + + return ret; +} + +int vpu_rpm_get(struct vpu_device *vdev) +{ + int ret; + + vpu_dbg(PM, "rpm_get count %d\n", atomic_read(&vdev->drm.dev->power.usage_count)); + + ret = pm_runtime_get_sync(vdev->drm.dev); + if (ret < 0) { + vpu_err(vdev, "Failed to resume operation: %d\n", ret); + pm_runtime_put_noidle(vdev->drm.dev); + } else { + vdev->pm->suspend_reschedule_counter = PM_RESCHEDULE_LIMIT; + } + + return ret; +} + +void vpu_rpm_put(struct vpu_device *vdev) +{ + vpu_dbg(PM, "rpm_put count %d\n", atomic_read(&vdev->drm.dev->power.usage_count)); + + pm_runtime_mark_last_busy(vdev->drm.dev); + pm_runtime_put_autosuspend(vdev->drm.dev); +} + +void vpu_pm_reset_prepare_cb(struct pci_dev *pdev) +{ + struct vpu_device *vdev = pci_get_drvdata(pdev); + + vpu_dbg(PM, "Pre-reset..\n"); + + mutex_lock(&vdev->pm->lock); + + vpu_shutdown(vdev); + vpu_pm_prepare_cold_boot(vdev); + vpu_jobs_abort_all(vdev); + + mutex_unlock(&vdev->pm->lock); + + vpu_dbg(PM, "Pre-reset done.\n"); +} + +void vpu_pm_reset_done_cb(struct pci_dev *pdev) +{ + struct vpu_device *vdev = pci_get_drvdata(pdev); + int ret; + + vpu_dbg(PM, "Post-reset..\n"); + + mutex_lock(&vdev->pm->lock); + + ret = vpu_resume(vdev); + if (ret) + vpu_err(vdev, "Failed to set RESUME state: %d\n", ret); + + mutex_unlock(&vdev->pm->lock); + + vpu_dbg(PM, "Post-reset done.\n"); +} + +int vpu_pm_init(struct vpu_device *vdev) +{ + struct device *dev = vdev->drm.dev; + struct vpu_pm_info *pm = vdev->pm; + + pm->vdev = vdev; + pm->suspend_reschedule_counter = PM_RESCHEDULE_LIMIT; + + atomic_set(&pm->in_recovery, 0); + INIT_WORK(&pm->recovery_work, vpu_pm_recovery_work); + mutex_init(&pm->lock); + + pm_runtime_use_autosuspend(dev); + + if (vpu_disable_recovery) + pm_runtime_set_autosuspend_delay(dev, -1); + else if (vpu_is_silicon(vdev)) + pm_runtime_set_autosuspend_delay(dev, 1000); + else + pm_runtime_set_autosuspend_delay(dev, 60000); + + pm_runtime_set_active(dev); + pm_runtime_allow(dev); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + + vpu_dbg(PM, "Initial RPM count %d\n", atomic_read(&dev->power.usage_count)); + + return 0; +} + +void vpu_pm_fini(struct vpu_device *vdev) +{ + pm_runtime_forbid(vdev->drm.dev); + pm_runtime_get_noresume(vdev->drm.dev); + + vpu_dbg(PM, "Release RPM count %d\n", atomic_read(&vdev->drm.dev->power.usage_count)); +} diff --git a/drivers/gpu/drm/vpu/vpu_pm.h b/drivers/gpu/drm/vpu/vpu_pm.h new file mode 100644 index 000000000000..c1709225ae5c --- /dev/null +++ b/drivers/gpu/drm/vpu/vpu_pm.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright © 2020-2022 Intel Corporation + */ + +#ifndef __VPU_PM_H__ +#define __VPU_PM_H__ + +#include + +struct vpu_device; + +struct vpu_pm_info { + struct vpu_device *vdev; + struct mutex lock; /* Protects state transitions */ + struct work_struct recovery_work; + atomic_t in_recovery; + bool is_warmboot; + u32 suspend_reschedule_counter; +}; + +int vpu_pm_init(struct vpu_device *vdev); +void vpu_pm_fini(struct vpu_device *vdev); + +int vpu_pm_suspend_cb(struct device *dev); +int vpu_pm_resume_cb(struct device *dev); +int vpu_pm_runtime_suspend_cb(struct device *dev); +int vpu_pm_runtime_resume_cb(struct device *dev); + +void vpu_pm_reset_prepare_cb(struct pci_dev *pdev); +void vpu_pm_reset_done_cb(struct pci_dev *pdev); + +int vpu_rpm_get(struct vpu_device *vdev); +void vpu_rpm_put(struct vpu_device *vdev); + +void vpu_pm_schedule_recovery(struct vpu_device *vdev); + +#endif /* __VPU_PM_H__ */ -- 2.34.1