- Implement cold and warm firmware boot flows - Add hang recovery support - Add runtime power management support Signed-off-by: Krystian Pradzynski <krystian.pradzynski@xxxxxxxxxxxxxxx> Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@xxxxxxxxxxxxxxx> --- drivers/gpu/drm/ivpu/Makefile | 3 +- drivers/gpu/drm/ivpu/ivpu_drv.c | 34 ++- drivers/gpu/drm/ivpu/ivpu_drv.h | 2 + drivers/gpu/drm/ivpu/ivpu_fw.c | 4 + drivers/gpu/drm/ivpu/ivpu_hw_mtl.c | 16 +- drivers/gpu/drm/ivpu/ivpu_ipc.c | 11 +- drivers/gpu/drm/ivpu/ivpu_job.c | 14 +- drivers/gpu/drm/ivpu/ivpu_mmu.c | 7 +- drivers/gpu/drm/ivpu/ivpu_pm.c | 352 +++++++++++++++++++++++++++++ drivers/gpu/drm/ivpu/ivpu_pm.h | 38 ++++ 10 files changed, 475 insertions(+), 6 deletions(-) create mode 100644 drivers/gpu/drm/ivpu/ivpu_pm.c create mode 100644 drivers/gpu/drm/ivpu/ivpu_pm.h diff --git a/drivers/gpu/drm/ivpu/Makefile b/drivers/gpu/drm/ivpu/Makefile index e87d8182c5c7..c17e4a25f751 100644 --- a/drivers/gpu/drm/ivpu/Makefile +++ b/drivers/gpu/drm/ivpu/Makefile @@ -10,6 +10,7 @@ intel_vpu-y := \ ivpu_job.o \ ivpu_jsm_msg.o \ ivpu_mmu.o \ - ivpu_mmu_context.o + ivpu_mmu_context.o \ + ivpu_pm.o obj-$(CONFIG_DRM_IVPU) += intel_vpu.o diff --git a/drivers/gpu/drm/ivpu/ivpu_drv.c b/drivers/gpu/drm/ivpu/ivpu_drv.c index 51e1f124139a..c31ce1bbc5be 100644 --- a/drivers/gpu/drm/ivpu/ivpu_drv.c +++ b/drivers/gpu/drm/ivpu/ivpu_drv.c @@ -23,6 +23,7 @@ #include "ivpu_jsm_msg.h" #include "ivpu_mmu.h" #include "ivpu_mmu_context.h" +#include "ivpu_pm.h" #ifndef DRIVER_VERSION_STR #define DRIVER_VERSION_STR __stringify(DRM_IVPU_DRIVER_MAJOR) "." \ @@ -80,9 +81,11 @@ static void file_priv_release(struct kref *ref) ivpu_dbg(FILE, "file_priv release: ctx %u\n", file_priv->ctx.id); if (file_priv->ctx.id) { + ivpu_rpm_get(vdev); ivpu_cmdq_release_all(file_priv); ivpu_bo_remove_all_bos_from_context(&file_priv->ctx); ivpu_mmu_user_context_fini(file_priv); + ivpu_rpm_put(vdev); } kfree(file_priv); @@ -273,6 +276,7 @@ static int ivpu_wait_for_ready(struct ivpu_device *vdev) int ivpu_boot(struct ivpu_device *vdev) { + struct ivpu_pm_info *pm = vdev->pm; int ret; /* Update boot params located at first 4KB of FW memory */ @@ -290,6 +294,7 @@ int ivpu_boot(struct ivpu_device *vdev) return ret; } + atomic_set(&pm->in_recovery, 0); ivpu_hw_irq_clear(vdev); ivpu_hw_irq_enable(vdev); ivpu_ipc_enable(vdev); @@ -427,6 +432,10 @@ static int ivpu_dev_init(struct ivpu_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 = &ivpu_hw_mtl_ops; vdev->platform = IVPU_PLATFORM_INVALID; @@ -485,10 +494,16 @@ static int ivpu_dev_init(struct ivpu_device *vdev) goto err_fw_fini; } + ret = ivpu_pm_init(vdev); + if (ret) { + ivpu_err(vdev, "Failed to initialize PM: %d\n", ret); + goto err_ipc_fini; + } + ret = ivpu_job_done_thread_init(vdev); if (ret) { ivpu_err(vdev, "Failed to initialize job done thread: %d\n", ret); - goto err_ipc_fini; + goto err_pm_fini; } ret = ivpu_fw_load(vdev); @@ -507,6 +522,8 @@ static int ivpu_dev_init(struct ivpu_device *vdev) err_job_done_thread_fini: ivpu_job_done_thread_fini(vdev); +err_pm_fini: + ivpu_pm_fini(vdev); err_ipc_fini: ivpu_ipc_fini(vdev); err_fw_fini: @@ -529,6 +546,7 @@ static void ivpu_dev_fini(struct ivpu_device *vdev) ivpu_shutdown(vdev); ivpu_job_done_thread_fini(vdev); + ivpu_pm_fini(vdev); ivpu_ipc_fini(vdev); ivpu_fw_fini(vdev); ivpu_mmu_fini(vdev); @@ -583,11 +601,25 @@ static void ivpu_remove(struct pci_dev *pdev) ivpu_dev_fini(vdev); } +static const struct dev_pm_ops ivpu_drv_pci_pm = { + SET_SYSTEM_SLEEP_PM_OPS(ivpu_pm_suspend_cb, ivpu_pm_resume_cb) + SET_RUNTIME_PM_OPS(ivpu_pm_runtime_suspend_cb, ivpu_pm_runtime_resume_cb, NULL) +}; + +static const struct pci_error_handlers ivpu_drv_pci_err = { + .reset_prepare = ivpu_pm_reset_prepare_cb, + .reset_done = ivpu_pm_reset_done_cb, +}; + static struct pci_driver ivpu_pci_driver = { .name = KBUILD_MODNAME, .id_table = ivpu_pci_ids, .probe = ivpu_probe, .remove = ivpu_remove, + .driver = { + .pm = &ivpu_drv_pci_pm, + }, + .err_handler = &ivpu_drv_pci_err, }; static __init int ivpu_init(void) diff --git a/drivers/gpu/drm/ivpu/ivpu_drv.h b/drivers/gpu/drm/ivpu/ivpu_drv.h index 59544b3efec8..57f87e0a62c8 100644 --- a/drivers/gpu/drm/ivpu/ivpu_drv.h +++ b/drivers/gpu/drm/ivpu/ivpu_drv.h @@ -75,6 +75,7 @@ struct ivpu_hw_info; struct ivpu_mmu_info; struct ivpu_fw_info; struct ivpu_ipc_info; +struct ivpu_pm_info; struct ivpu_device { struct drm_device drm; /* Must be first */ @@ -88,6 +89,7 @@ struct ivpu_device { struct ivpu_mmu_info *mmu; struct ivpu_fw_info *fw; struct ivpu_ipc_info *ipc; + struct ivpu_pm_info *pm; struct ivpu_mmu_context gctx; struct xarray context_xa; diff --git a/drivers/gpu/drm/ivpu/ivpu_fw.c b/drivers/gpu/drm/ivpu/ivpu_fw.c index d55f13f2daed..0b94c616ad7e 100644 --- a/drivers/gpu/drm/ivpu/ivpu_fw.c +++ b/drivers/gpu/drm/ivpu/ivpu_fw.c @@ -14,6 +14,7 @@ #include "ivpu_gem.h" #include "ivpu_hw.h" #include "ivpu_ipc.h" +#include "ivpu_pm.h" #define FW_MAX_NAMES 3 #define FW_GLOBAL_MEM_START (2ull * SZ_1G) @@ -367,9 +368,12 @@ void ivpu_fw_boot_params_setup(struct ivpu_device *vdev, struct vpu_boot_params /* In case of warm boot we only have to reset the entrypoint addr */ if (!ivpu_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 = ivpu_hw_reg_pll_freq_get(vdev); diff --git a/drivers/gpu/drm/ivpu/ivpu_hw_mtl.c b/drivers/gpu/drm/ivpu/ivpu_hw_mtl.c index e20bd839290b..c2334e626fb0 100644 --- a/drivers/gpu/drm/ivpu/ivpu_hw_mtl.c +++ b/drivers/gpu/drm/ivpu/ivpu_hw_mtl.c @@ -10,6 +10,7 @@ #include "ivpu_hw.h" #include "ivpu_ipc.h" #include "ivpu_mmu.h" +#include "ivpu_pm.h" #define TILE_FUSE_ENABLE_BOTH 0x0 #define TILE_FUSE_ENABLE_UPPER 0x1 @@ -916,6 +917,8 @@ static irqreturn_t ivpu_hw_mtl_irq_wdt_nce_handler(struct ivpu_device *vdev) { ivpu_err_ratelimited(vdev, "WDT NCE irq\n"); + ivpu_pm_schedule_recovery(vdev); + return IRQ_HANDLED; } @@ -924,6 +927,7 @@ static irqreturn_t ivpu_hw_mtl_irq_wdt_mss_handler(struct ivpu_device *vdev) ivpu_err_ratelimited(vdev, "WDT MSS irq\n"); ivpu_hw_wdt_disable(vdev); + ivpu_pm_schedule_recovery(vdev); return IRQ_HANDLED; } @@ -932,6 +936,8 @@ static irqreturn_t ivpu_hw_mtl_irq_noc_firewall_handler(struct ivpu_device *vdev { ivpu_err_ratelimited(vdev, "NOC Firewall irq\n"); + ivpu_pm_schedule_recovery(vdev); + return IRQ_HANDLED; } @@ -970,6 +976,7 @@ static irqreturn_t ivpu_hw_mtl_irqv_handler(struct ivpu_device *vdev, int irq) /* Handler for IRQs from Buttress core (irqB) */ static irqreturn_t ivpu_hw_mtl_irqb_handler(struct ivpu_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); @@ -980,19 +987,25 @@ static irqreturn_t ivpu_hw_mtl_irqb_handler(struct ivpu_device *vdev, int irq) if (REG_TEST_FLD(MTL_BUTTRESS_INTERRUPT_STAT, ATS_ERR, status)) { ivpu_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)) { ivpu_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) + ivpu_pm_schedule_recovery(vdev); + return IRQ_HANDLED; } static irqreturn_t ivpu_hw_mtl_irq_handler(int irq, void *ptr) { struct ivpu_device *vdev = ptr; + struct ivpu_pm_info *pm = vdev->pm; irqreturn_t ret_irqv; irqreturn_t ret_irqb; @@ -1001,7 +1014,8 @@ static irqreturn_t ivpu_hw_mtl_irq_handler(int irq, void *ptr) ret_irqv = ivpu_hw_mtl_irqv_handler(vdev, irq); ret_irqb = ivpu_hw_mtl_irqb_handler(vdev, irq); - ivpu_hw_mtl_irq_enable(vdev); + if (!atomic_read(&pm->in_recovery)) + ivpu_hw_mtl_irq_enable(vdev); return ret_irqv & ret_irqb; } diff --git a/drivers/gpu/drm/ivpu/ivpu_ipc.c b/drivers/gpu/drm/ivpu/ivpu_ipc.c index 7d50a2e6ff80..4fa42d85ae92 100644 --- a/drivers/gpu/drm/ivpu/ivpu_ipc.c +++ b/drivers/gpu/drm/ivpu/ivpu_ipc.c @@ -14,6 +14,7 @@ #include "ivpu_hw_reg_io.h" #include "ivpu_ipc.h" #include "ivpu_jsm_msg.h" +#include "ivpu_pm.h" #define IPC_MAX_RX_MSG 128 #define IS_KTHREAD() (get_current()->flags & PF_KTHREAD) @@ -264,6 +265,10 @@ ivpu_ipc_send_receive_internal(struct ivpu_device *vdev, struct vpu_jsm_msg *req struct ivpu_ipc_consumer cons; int ret; + ret = ivpu_rpm_get(vdev); + if (ret < 0) + return ret; + ivpu_ipc_consumer_add(vdev, &cons, channel); ret = ivpu_ipc_send(vdev, &cons, req); @@ -286,6 +291,8 @@ ivpu_ipc_send_receive_internal(struct ivpu_device *vdev, struct vpu_jsm_msg *req consumer_del: ivpu_ipc_consumer_del(vdev, &cons); + ivpu_rpm_put(vdev); + return ret; } @@ -305,8 +312,10 @@ int ivpu_ipc_send_receive(struct ivpu_device *vdev, struct vpu_jsm_msg *req, ret = ivpu_ipc_send_receive_internal(vdev, &hb_req, VPU_JSM_MSG_QUERY_ENGINE_HB_DONE, &hb_resp, VPU_IPC_CHAN_ASYNC_CMD, vdev->timeout.jsm); - if (ret) + if (ret) { ivpu_hw_diagnose_tdr(vdev); + ivpu_pm_schedule_recovery(vdev); + } return ret; } diff --git a/drivers/gpu/drm/ivpu/ivpu_job.c b/drivers/gpu/drm/ivpu/ivpu_job.c index 07241f4a87bd..a8540934cbd2 100644 --- a/drivers/gpu/drm/ivpu/ivpu_job.c +++ b/drivers/gpu/drm/ivpu/ivpu_job.c @@ -17,6 +17,7 @@ #include "ivpu_ipc.h" #include "ivpu_job.h" #include "ivpu_jsm_msg.h" +#include "ivpu_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) ivpu_dbg(KREF, "Job released: id %u\n", job->job_id); kfree(job); + + /* Allow the VPU to get suspended, must be called after ivpu_file_priv_put() */ + ivpu_rpm_put(vdev); } static void job_put(struct ivpu_job *job) @@ -280,11 +284,16 @@ ivpu_create_job(struct ivpu_file_priv *file_priv, u32 engine_idx, u32 bo_count) struct ivpu_device *vdev = file_priv->vdev; struct ivpu_job *job; size_t buf_size; + int ret; + + ret = ivpu_rpm_get(vdev); + if (ret < 0) + return NULL; buf_size = sizeof(*job) + bo_count * sizeof(struct ivpu_bo *); job = kzalloc(buf_size, GFP_KERNEL); if (!job) - return NULL; + goto err_rpm_put; kref_init(&job->ref); @@ -305,6 +314,8 @@ ivpu_create_job(struct ivpu_file_priv *file_priv, u32 engine_idx, u32 bo_count) err_free_job: kfree(job); +err_rpm_put: + ivpu_rpm_put(vdev); return NULL; } @@ -580,6 +591,7 @@ static int ivpu_job_done_thread(void *arg) if (jobs_submitted && !xa_empty(&vdev->submitted_jobs_xa)) { ivpu_err(vdev, "TDR detected, timeout %d ms", timeout); ivpu_hw_diagnose_tdr(vdev); + ivpu_pm_schedule_recovery(vdev); } } } diff --git a/drivers/gpu/drm/ivpu/ivpu_mmu.c b/drivers/gpu/drm/ivpu/ivpu_mmu.c index b9f225a83c45..13887fea8bca 100644 --- a/drivers/gpu/drm/ivpu/ivpu_mmu.c +++ b/drivers/gpu/drm/ivpu/ivpu_mmu.c @@ -11,6 +11,7 @@ #include "ivpu_hw_reg_io.h" #include "ivpu_mmu.h" #include "ivpu_mmu_context.h" +#include "ivpu_pm.h" #define IVPU_MMU_IDR0_REF 0x080f3e0f #define IVPU_MMU_IDR0_REF_SIMICS 0x080f3e1f @@ -827,6 +828,8 @@ irqreturn_t ivpu_mmu_irq_evtq_handler(struct ivpu_device *vdev) } while (evtq->prod != evtq->cons); + ivpu_pm_schedule_recovery(vdev); + return IRQ_HANDLED; } @@ -843,8 +846,10 @@ irqreturn_t ivpu_mmu_irq_gerr_handler(struct ivpu_device *vdev) if (!(active & IVPU_MMU_GERROR_ERR_MASK)) return IRQ_NONE; - if (REG_TEST_FLD(MTL_VPU_HOST_MMU_GERROR, SFM, active)) + if (REG_TEST_FLD(MTL_VPU_HOST_MMU_GERROR, SFM, active)) { ivpu_err_ratelimited(vdev, "MMU has entered service failure mode\n"); + ivpu_pm_schedule_recovery(vdev); + } if (REG_TEST_FLD(MTL_VPU_HOST_MMU_GERROR, MSI_ABT, active)) ivpu_warn_ratelimited(vdev, "MMU MSI ABT write aborted\n"); diff --git a/drivers/gpu/drm/ivpu/ivpu_pm.c b/drivers/gpu/drm/ivpu/ivpu_pm.c new file mode 100644 index 000000000000..2e5e9843b1c5 --- /dev/null +++ b/drivers/gpu/drm/ivpu/ivpu_pm.c @@ -0,0 +1,352 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright © 2020-2022 Intel Corporation + */ + +#include <linux/highmem.h> +#include <linux/moduleparam.h> +#include <linux/pci.h> +#include <linux/pm_runtime.h> +#include <linux/reboot.h> + +#include "vpu_boot_api.h" +#include "ivpu_drv.h" +#include "ivpu_hw.h" +#include "ivpu_fw.h" +#include "ivpu_ipc.h" +#include "ivpu_job.h" +#include "ivpu_mmu.h" +#include "ivpu_pm.h" + +static bool ivpu_disable_recovery; +module_param_named_unsafe(disable_recovery, ivpu_disable_recovery, bool, 0644); +MODULE_PARM_DESC(disable_recovery, "Disables recovery when VPU hang is detected"); + +#define PM_RESCHEDULE_LIMIT 5 + +static void ivpu_pm_prepare_cold_boot(struct ivpu_device *vdev) +{ + struct ivpu_fw_info *fw = vdev->fw; + + ivpu_cmdq_reset_all_contexts(vdev); + ivpu_fw_load(vdev); + fw->entry_point = fw->cold_boot_entry_point; +} + +static void ivpu_pm_prepare_warm_boot(struct ivpu_device *vdev) +{ + struct ivpu_fw_info *fw = vdev->fw; + struct vpu_boot_params *bp = fw->mem->kvaddr; + + if (!bp->save_restore_ret_address) { + ivpu_pm_prepare_cold_boot(vdev); + return; + } + + ivpu_dbg(FW_BOOT, "Save/restore entry point %llx", bp->save_restore_ret_address); + fw->entry_point = bp->save_restore_ret_address; +} + +static int ivpu_suspend(struct ivpu_device *vdev) +{ + int ret; + + lockdep_assert_held(&vdev->pm->lock); + + ret = ivpu_shutdown(vdev); + if (ret) { + ivpu_err(vdev, "Failed to shutdown VPU: %d\n", ret); + return ret; + } + + return ret; +} + +static int ivpu_resume(struct ivpu_device *vdev) +{ + int ret; + + lockdep_assert_held(&vdev->pm->lock); + +retry: + ret = ivpu_hw_power_up(vdev); + if (ret) { + ivpu_err(vdev, "Failed to power up HW: %d\n", ret); + return ret; + } + + ret = ivpu_mmu_enable(vdev); + if (ret) { + ivpu_err(vdev, "Failed to resume MMU: %d\n", ret); + ivpu_hw_power_down(vdev); + return ret; + } + + ret = ivpu_boot(vdev); + if (ret) { + ivpu_mmu_disable(vdev); + ivpu_hw_power_down(vdev); + if (!ivpu_fw_is_cold_boot(vdev)) { + ivpu_warn(vdev, "Failed to resume the FW: %d. Retrying cold boot..\n", ret); + ivpu_pm_prepare_cold_boot(vdev); + goto retry; + } else { + ivpu_err(vdev, "Failed to resume the FW: %d\n", ret); + } + } + + return ret; +} + +static void ivpu_pm_recovery_work(struct work_struct *work) +{ + struct ivpu_pm_info *pm = container_of(work, struct ivpu_pm_info, recovery_work); + struct ivpu_device *vdev = pm->vdev; + char *evt[2] = {"IVPU_PM_EVENT=IVPU_RECOVER", NULL}; + int ret; + + ret = pci_reset_function(to_pci_dev(vdev->drm.dev)); + if (ret) + ivpu_err(vdev, "Failed to reset VPU: %d\n", ret); + + kobject_uevent_env(&vdev->drm.dev->kobj, KOBJ_CHANGE, evt); +} + +void ivpu_pm_schedule_recovery(struct ivpu_device *vdev) +{ + struct ivpu_pm_info *pm = vdev->pm; + + if (ivpu_disable_recovery) { + ivpu_err(vdev, "Recovery not available when disable_recovery param is set\n"); + return; + } + + if (ivpu_is_fpga(vdev)) { + ivpu_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) { + ivpu_hw_irq_disable(vdev); + queue_work(system_long_wq, &pm->recovery_work); + } +} + +int ivpu_pm_suspend_cb(struct device *dev) +{ + struct drm_device *drm = dev_get_drvdata(dev); + struct ivpu_device *vdev = to_ivpu_device(drm); + int ret; + + ivpu_dbg(PM, "Suspend..\n"); + + mutex_lock(&vdev->pm->lock); + + ret = ivpu_suspend(vdev); + if (ret && vdev->pm->suspend_reschedule_counter) { + ivpu_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) { + ivpu_warn(vdev, "VPU failed to enter idle, force suspend\n"); + ivpu_pm_prepare_cold_boot(vdev); + } else { + ivpu_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); + + ivpu_dbg(PM, "Suspend done.\n"); + + return ret; +} + +int ivpu_pm_resume_cb(struct device *dev) +{ + struct drm_device *drm = dev_get_drvdata(dev); + struct ivpu_device *vdev = to_ivpu_device(drm); + int ret; + + ivpu_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 = ivpu_resume(vdev); + if (ret) + ivpu_err(vdev, "Failed to resume: %d\n", ret); + + mutex_unlock(&vdev->pm->lock); + + ivpu_dbg(PM, "Resume done.\n"); + + return ret; +} + +int ivpu_pm_runtime_suspend_cb(struct device *dev) +{ + struct drm_device *drm = dev_get_drvdata(dev); + struct ivpu_device *vdev = to_ivpu_device(drm); + int ret; + + ivpu_dbg(PM, "Runtime suspend..\n"); + + if (!ivpu_hw_is_idle(vdev) && vdev->pm->suspend_reschedule_counter) { + ivpu_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 = ivpu_suspend(vdev); + if (ret) + ivpu_err(vdev, "Failed to set suspend VPU: %d\n", ret); + + if (!vdev->pm->suspend_reschedule_counter) { + ivpu_warn(vdev, "VPU failed to enter idle, force suspended.\n"); + ivpu_pm_prepare_cold_boot(vdev); + } else { + ivpu_pm_prepare_warm_boot(vdev); + } + + vdev->pm->suspend_reschedule_counter = PM_RESCHEDULE_LIMIT; + mutex_unlock(&vdev->pm->lock); + + ivpu_dbg(PM, "Runtime suspend done.\n"); + + return 0; +} + +int ivpu_pm_runtime_resume_cb(struct device *dev) +{ + struct drm_device *drm = dev_get_drvdata(dev); + struct ivpu_device *vdev = to_ivpu_device(drm); + int ret; + + ivpu_dbg(PM, "Runtime resume..\n"); + + mutex_lock(&vdev->pm->lock); + + ret = ivpu_resume(vdev); + if (ret) + ivpu_err(vdev, "Failed to set RESUME state: %d\n", ret); + + mutex_unlock(&vdev->pm->lock); + + ivpu_dbg(PM, "Runtime resume done.\n"); + + return ret; +} + +int ivpu_rpm_get(struct ivpu_device *vdev) +{ + int ret; + + ivpu_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) { + ivpu_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 ivpu_rpm_put(struct ivpu_device *vdev) +{ + ivpu_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 ivpu_pm_reset_prepare_cb(struct pci_dev *pdev) +{ + struct ivpu_device *vdev = pci_get_drvdata(pdev); + + ivpu_dbg(PM, "Pre-reset..\n"); + + mutex_lock(&vdev->pm->lock); + + ivpu_shutdown(vdev); + ivpu_pm_prepare_cold_boot(vdev); + ivpu_jobs_abort_all(vdev); + + mutex_unlock(&vdev->pm->lock); + + ivpu_dbg(PM, "Pre-reset done.\n"); +} + +void ivpu_pm_reset_done_cb(struct pci_dev *pdev) +{ + struct ivpu_device *vdev = pci_get_drvdata(pdev); + int ret; + + ivpu_dbg(PM, "Post-reset..\n"); + + mutex_lock(&vdev->pm->lock); + + ret = ivpu_resume(vdev); + if (ret) + ivpu_err(vdev, "Failed to set RESUME state: %d\n", ret); + + mutex_unlock(&vdev->pm->lock); + + ivpu_dbg(PM, "Post-reset done.\n"); +} + +int ivpu_pm_init(struct ivpu_device *vdev) +{ + struct device *dev = vdev->drm.dev; + struct ivpu_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, ivpu_pm_recovery_work); + mutex_init(&pm->lock); + + pm_runtime_use_autosuspend(dev); + + if (ivpu_disable_recovery) + pm_runtime_set_autosuspend_delay(dev, -1); + else if (ivpu_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); + + ivpu_dbg(PM, "Initial RPM count %d\n", atomic_read(&dev->power.usage_count)); + + return 0; +} + +void ivpu_pm_fini(struct ivpu_device *vdev) +{ + pm_runtime_forbid(vdev->drm.dev); + pm_runtime_get_noresume(vdev->drm.dev); + + ivpu_dbg(PM, "Release RPM count %d\n", atomic_read(&vdev->drm.dev->power.usage_count)); +} diff --git a/drivers/gpu/drm/ivpu/ivpu_pm.h b/drivers/gpu/drm/ivpu/ivpu_pm.h new file mode 100644 index 000000000000..9a1ea659b21d --- /dev/null +++ b/drivers/gpu/drm/ivpu/ivpu_pm.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright © 2020-2022 Intel Corporation + */ + +#ifndef __IVPU_PM_H__ +#define __IVPU_PM_H__ + +#include <linux/types.h> + +struct ivpu_device; + +struct ivpu_pm_info { + struct ivpu_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 ivpu_pm_init(struct ivpu_device *vdev); +void ivpu_pm_fini(struct ivpu_device *vdev); + +int ivpu_pm_suspend_cb(struct device *dev); +int ivpu_pm_resume_cb(struct device *dev); +int ivpu_pm_runtime_suspend_cb(struct device *dev); +int ivpu_pm_runtime_resume_cb(struct device *dev); + +void ivpu_pm_reset_prepare_cb(struct pci_dev *pdev); +void ivpu_pm_reset_done_cb(struct pci_dev *pdev); + +int ivpu_rpm_get(struct ivpu_device *vdev); +void ivpu_rpm_put(struct ivpu_device *vdev); + +void ivpu_pm_schedule_recovery(struct ivpu_device *vdev); + +#endif /* __IVPU_PM_H__ */ -- 2.34.1