1 /* SPDX-License-Identifier: GPL-2.0 or MIT */ 2 /* Copyright 2019 Linaro, Ltd, Rob Herring <robh@kernel.org> */ 3 /* Copyright 2023 Collabora ltd. */ 4 5 #ifndef __PANTHOR_MMU_H__ 6 #define __PANTHOR_MMU_H__ 7 8 #include <linux/dma-resv.h> 9 10 struct drm_exec; 11 struct drm_sched_job; 12 struct panthor_gem_object; 13 struct panthor_heap_pool; 14 struct panthor_vm; 15 struct panthor_vma; 16 struct panthor_mmu; 17 18 int panthor_mmu_init(struct panthor_device *ptdev); 19 void panthor_mmu_unplug(struct panthor_device *ptdev); 20 void panthor_mmu_pre_reset(struct panthor_device *ptdev); 21 void panthor_mmu_post_reset(struct panthor_device *ptdev); 22 void panthor_mmu_suspend(struct panthor_device *ptdev); 23 void panthor_mmu_resume(struct panthor_device *ptdev); 24 25 int panthor_vm_map_bo_range(struct panthor_vm *vm, struct panthor_gem_object *bo, 26 u64 offset, u64 size, u64 va, u32 flags); 27 int panthor_vm_unmap_range(struct panthor_vm *vm, u64 va, u64 size); 28 struct panthor_gem_object * 29 panthor_vm_get_bo_for_va(struct panthor_vm *vm, u64 va, u64 *bo_offset); 30 31 int panthor_vm_active(struct panthor_vm *vm); 32 void panthor_vm_idle(struct panthor_vm *vm); 33 u32 panthor_vm_page_size(struct panthor_vm *vm); 34 int panthor_vm_as(struct panthor_vm *vm); 35 int panthor_vm_flush_all(struct panthor_vm *vm); 36 37 struct panthor_heap_pool * 38 panthor_vm_get_heap_pool(struct panthor_vm *vm, bool create); 39 40 struct panthor_vm *panthor_vm_get(struct panthor_vm *vm); 41 void panthor_vm_put(struct panthor_vm *vm); 42 struct panthor_vm *panthor_vm_create(struct panthor_device *ptdev, bool for_mcu, 43 u64 kernel_va_start, u64 kernel_va_size, 44 u64 kernel_auto_va_start, 45 u64 kernel_auto_va_size); 46 47 int panthor_vm_prepare_mapped_bos_resvs(struct drm_exec *exec, 48 struct panthor_vm *vm, 49 u32 slot_count); 50 int panthor_vm_add_bos_resvs_deps_to_job(struct panthor_vm *vm, 51 struct drm_sched_job *job); 52 void panthor_vm_add_job_fence_to_bos_resvs(struct panthor_vm *vm, 53 struct drm_sched_job *job); 54 55 struct dma_resv *panthor_vm_resv(struct panthor_vm *vm); 56 struct drm_gem_object *panthor_vm_root_gem(struct panthor_vm *vm); 57 58 void panthor_vm_pool_destroy(struct panthor_file *pfile); 59 int panthor_vm_pool_create(struct panthor_file *pfile); 60 int panthor_vm_pool_create_vm(struct panthor_device *ptdev, 61 struct panthor_vm_pool *pool, 62 struct drm_panthor_vm_create *args); 63 int panthor_vm_pool_destroy_vm(struct panthor_vm_pool *pool, u32 handle); 64 struct panthor_vm *panthor_vm_pool_get_vm(struct panthor_vm_pool *pool, u32 handle); 65 66 bool panthor_vm_has_unhandled_faults(struct panthor_vm *vm); 67 bool panthor_vm_is_unusable(struct panthor_vm *vm); 68 69 /* 70 * PANTHOR_VM_KERNEL_AUTO_VA: Use this magic address when you want the GEM 71 * logic to auto-allocate the virtual address in the reserved kernel VA range. 72 */ 73 #define PANTHOR_VM_KERNEL_AUTO_VA ~0ull 74 75 int panthor_vm_alloc_va(struct panthor_vm *vm, u64 va, u64 size, 76 struct drm_mm_node *va_node); 77 void panthor_vm_free_va(struct panthor_vm *vm, struct drm_mm_node *va_node); 78 79 int panthor_vm_bind_exec_sync_op(struct drm_file *file, 80 struct panthor_vm *vm, 81 struct drm_panthor_vm_bind_op *op); 82 83 struct drm_sched_job * 84 panthor_vm_bind_job_create(struct drm_file *file, 85 struct panthor_vm *vm, 86 const struct drm_panthor_vm_bind_op *op); 87 void panthor_vm_bind_job_put(struct drm_sched_job *job); 88 int panthor_vm_bind_job_prepare_resvs(struct drm_exec *exec, 89 struct drm_sched_job *job); 90 void panthor_vm_bind_job_update_resvs(struct drm_exec *exec, struct drm_sched_job *job); 91 92 void panthor_vm_update_resvs(struct panthor_vm *vm, struct drm_exec *exec, 93 struct dma_fence *fence, 94 enum dma_resv_usage private_usage, 95 enum dma_resv_usage extobj_usage); 96 97 int panthor_mmu_pt_cache_init(void); 98 void panthor_mmu_pt_cache_fini(void); 99 100 #ifdef CONFIG_DEBUG_FS 101 void panthor_mmu_debugfs_init(struct drm_minor *minor); 102 #endif 103 104 #endif 105