diff --git a/drivers/gpu/drm/xe/Makefile b/drivers/gpu/drm/xe/Makefile index e11392b5dd3d..b9670ae09a9e 100644 --- a/drivers/gpu/drm/xe/Makefile +++ b/drivers/gpu/drm/xe/Makefile @@ -66,6 +66,7 @@ xe-y += xe_bb.o \ xe_heci_gsc.o \ xe_hw_engine.o \ xe_hw_engine_class_sysfs.o \ + xe_hw_engine_group.o \ xe_hw_fence.o \ xe_huc.o \ xe_irq.o \ diff --git a/drivers/gpu/drm/xe/xe_hw_engine.c b/drivers/gpu/drm/xe/xe_hw_engine.c index e195022ca836..aa9b2b16a6e0 100644 --- a/drivers/gpu/drm/xe/xe_hw_engine.c +++ b/drivers/gpu/drm/xe/xe_hw_engine.c @@ -23,6 +23,7 @@ #include "xe_gt_printk.h" #include "xe_gt_mcr.h" #include "xe_gt_topology.h" +#include "xe_hw_engine_group.h" #include "xe_hw_fence.h" #include "xe_irq.h" #include "xe_lrc.h" @@ -790,6 +791,9 @@ int xe_hw_engines_init(struct xe_gt *gt) } hw_engine_setup_logical_mapping(gt); + err = xe_hw_engine_setup_groups(gt); + if (err) + return err; return 0; } diff --git a/drivers/gpu/drm/xe/xe_hw_engine_group.c b/drivers/gpu/drm/xe/xe_hw_engine_group.c new file mode 100644 index 000000000000..1d109c08c7a6 --- /dev/null +++ b/drivers/gpu/drm/xe/xe_hw_engine_group.c @@ -0,0 +1,102 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2024 Intel Corporation + */ + +#include + +#include "xe_device.h" +#include "xe_gt.h" +#include "xe_hw_engine_group.h" + +static void +hw_engine_group_free(struct drm_device *drm, void *arg) +{ + struct xe_hw_engine_group *group = arg; + + kfree(group); +} + +static struct xe_hw_engine_group * +hw_engine_group_alloc(struct xe_device *xe) +{ + struct xe_hw_engine_group *group; + int err; + + group = kzalloc(sizeof(*group), GFP_KERNEL); + if (!group) + return ERR_PTR(-ENOMEM); + + init_rwsem(&group->mode_sem); + INIT_LIST_HEAD(&group->exec_queue_list); + + err = drmm_add_action_or_reset(&xe->drm, hw_engine_group_free, group); + if (err) + return ERR_PTR(err); + + return group; +} + +/** + * xe_hw_engine_setup_groups() - Setup the hw engine groups for the gt + * @gt: The gt for which groups are setup + * + * Return: 0 on success, negative error code on error. + */ +int xe_hw_engine_setup_groups(struct xe_gt *gt) +{ + struct xe_hw_engine *hwe; + enum xe_hw_engine_id id; + struct xe_hw_engine_group *group_rcs_ccs, *group_bcs, *group_vcs_vecs; + struct xe_device *xe = gt_to_xe(gt); + int err; + + group_rcs_ccs = hw_engine_group_alloc(xe); + if (IS_ERR(group_rcs_ccs)) { + err = PTR_ERR(group_rcs_ccs); + goto err_group_rcs_ccs; + } + + group_bcs = hw_engine_group_alloc(xe); + if (IS_ERR(group_bcs)) { + err = PTR_ERR(group_bcs); + goto err_group_bcs; + } + + group_vcs_vecs = hw_engine_group_alloc(xe); + if (IS_ERR(group_vcs_vecs)) { + err = PTR_ERR(group_vcs_vecs); + goto err_group_vcs_vecs; + } + + for_each_hw_engine(hwe, gt, id) { + switch (hwe->class) { + case XE_ENGINE_CLASS_COPY: + hwe->hw_engine_group = group_bcs; + break; + case XE_ENGINE_CLASS_RENDER: + case XE_ENGINE_CLASS_COMPUTE: + hwe->hw_engine_group = group_rcs_ccs; + break; + case XE_ENGINE_CLASS_VIDEO_DECODE: + case XE_ENGINE_CLASS_VIDEO_ENHANCE: + hwe->hw_engine_group = group_vcs_vecs; + break; + case XE_ENGINE_CLASS_OTHER: + break; + default: + drm_warn(&xe->drm, "NOT POSSIBLE"); + } + } + + return 0; + +err_group_vcs_vecs: + kfree(group_vcs_vecs); +err_group_bcs: + kfree(group_bcs); +err_group_rcs_ccs: + kfree(group_rcs_ccs); + + return err; +} diff --git a/drivers/gpu/drm/xe/xe_hw_engine_group.h b/drivers/gpu/drm/xe/xe_hw_engine_group.h new file mode 100644 index 000000000000..c2648f87f7ef --- /dev/null +++ b/drivers/gpu/drm/xe/xe_hw_engine_group.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2024 Intel Corporation + */ + +#ifndef _XE_HW_ENGINE_GROUP_H_ +#define _XE_HW_ENGINE_GROUP_H_ + +#include "xe_hw_engine_group_types.h" + +struct drm_device; +struct xe_gt; + +int xe_hw_engine_setup_groups(struct xe_gt *gt); + +#endif diff --git a/drivers/gpu/drm/xe/xe_hw_engine_group_types.h b/drivers/gpu/drm/xe/xe_hw_engine_group_types.h new file mode 100644 index 000000000000..92b6e0712c03 --- /dev/null +++ b/drivers/gpu/drm/xe/xe_hw_engine_group_types.h @@ -0,0 +1,51 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2024 Intel Corporation + */ + +#ifndef _XE_HW_ENGINE_GROUP_TYPES_H_ +#define _XE_HW_ENGINE_GROUP_TYPES_H_ + +#include "xe_force_wake_types.h" +#include "xe_lrc_types.h" +#include "xe_reg_sr_types.h" + +/** + * enum xe_hw_engine_group_execution_mode - possible execution modes of a hw + * engine group + * + * @EXEC_MODE_LR: execution in long-running mode + * @EXEC_MODE_DMA_FENCE: execution in dma fence mode + */ +enum xe_hw_engine_group_execution_mode { + EXEC_MODE_LR, + EXEC_MODE_DMA_FENCE, +}; + +/** + * struct xe_hw_engine_group - Hardware engine group + * + * hw engines belong to the same group if they share hardware resources in a way + * that prevents them from making progress when one is stuck on a page fault. + */ +struct xe_hw_engine_group { + /** + * @exec_queue_list: list of exec queues attached to this + * xe_hw_engine_group + */ + struct list_head exec_queue_list; + /** @resume_work: worker to resume faulting LR exec queues */ + struct work_struct resume_work; + /** @resume_wq: workqueue to resume faulting LR exec queues */ + struct workqueue_struct *resume_wq; + /** + * @mode_sem: used to protect this group's hardware resources and ensure + * mutual exclusion between execution only in faulting LR mode and + * execution only in DMA_FENCE mode + */ + struct rw_semaphore mode_sem; + /** @cur_mode: current execution mode of this hw engine group */ + enum xe_hw_engine_group_execution_mode cur_mode; +}; + +#endif diff --git a/drivers/gpu/drm/xe/xe_hw_engine_types.h b/drivers/gpu/drm/xe/xe_hw_engine_types.h index 70e6434f150d..39f24012d0f4 100644 --- a/drivers/gpu/drm/xe/xe_hw_engine_types.h +++ b/drivers/gpu/drm/xe/xe_hw_engine_types.h @@ -150,6 +150,8 @@ struct xe_hw_engine { struct xe_hw_engine_class_intf *eclass; /** @oa_unit: oa unit for this hw engine */ struct xe_oa_unit *oa_unit; + /** @hw_engine_group: the group of hw engines this one belongs to */ + struct xe_hw_engine_group *hw_engine_group; }; /**