34 	/* Wait for the MMU status to indicate there is no active command, in  in wait_ready()
52 	/* write AS_COMMAND when MMU is ready to accept another command */  in write_cmd()
105 	/* Run the MMU operation */  in mmu_hw_do_operation_locked()
113 			       struct panfrost_mmu *mmu,  in mmu_hw_do_operation()  argument
119 	ret = mmu_hw_do_operation_locked(pfdev, mmu->as, iova, size, op);  in mmu_hw_do_operation()
124 static void panfrost_mmu_enable(struct panfrost_device *pfdev, struct panfrost_mmu *mmu)  in panfrost_mmu_enable()  argument
126 	int as_nr = mmu->as;  in panfrost_mmu_enable()
127 	struct io_pgtable_cfg *cfg = &mmu->pgtbl_cfg;  in panfrost_mmu_enable()
158 u32 panfrost_mmu_as_get(struct panfrost_device *pfdev, struct panfrost_mmu *mmu)  in panfrost_mmu_as_get()  argument
164 	as = mmu->as;  in panfrost_mmu_as_get()
166 		int en = atomic_inc_return(&mmu->as_count);  in panfrost_mmu_as_get()
175 		list_move(&mmu->list, &pfdev->as_lru_list);  in panfrost_mmu_as_get()
178 			/* Unhandled pagefault on this AS, the MMU was  in panfrost_mmu_as_get()
179 			 * disabled. We need to re-enable the MMU after  in panfrost_mmu_as_get()
185 			panfrost_mmu_enable(pfdev, mmu);  in panfrost_mmu_as_get()
210 	mmu->as = as;  in panfrost_mmu_as_get()
212 	atomic_set(&mmu->as_count, 1);  in panfrost_mmu_as_get()
213 	list_add(&mmu->list, &pfdev->as_lru_list);  in panfrost_mmu_as_get()
215 	dev_dbg(pfdev->dev, "Assigned AS%d to mmu %p, alloc_mask=%lx", as, mmu, pfdev->as_alloc_mask);  in panfrost_mmu_as_get()
217 	panfrost_mmu_enable(pfdev, mmu);  in panfrost_mmu_as_get()
224 void panfrost_mmu_as_put(struct panfrost_device *pfdev, struct panfrost_mmu *mmu)  in panfrost_mmu_as_put()  argument
226 	atomic_dec(&mmu->as_count);  in panfrost_mmu_as_put()
227 	WARN_ON(atomic_read(&mmu->as_count) < 0);  in panfrost_mmu_as_put()
232 	struct panfrost_mmu *mmu, *mmu_tmp;  in panfrost_mmu_reset()  local
241 	list_for_each_entry_safe(mmu, mmu_tmp, &pfdev->as_lru_list, list) {  in panfrost_mmu_reset()
242 		mmu->as = -1;  in panfrost_mmu_reset()
243 		atomic_set(&mmu->as_count, 0);  in panfrost_mmu_reset()
244 		list_del_init(&mmu->list);  in panfrost_mmu_reset()
275 				     struct panfrost_mmu *mmu,  in panfrost_mmu_flush_range()  argument
278 	if (mmu->as < 0)  in panfrost_mmu_flush_range()
285 		mmu_hw_do_operation(pfdev, mmu, iova, size, AS_COMMAND_FLUSH_PT);  in panfrost_mmu_flush_range()
290 static int mmu_map_sg(struct panfrost_device *pfdev, struct panfrost_mmu *mmu,  in mmu_map_sg()  argument
295 	struct io_pgtable_ops *ops = mmu->pgtbl_ops;  in mmu_map_sg()
302 		dev_dbg(pfdev->dev, "map: as=%d, iova=%llx, paddr=%lx, len=%zx", mmu->as, iova, paddr, len);  in mmu_map_sg()
318 	panfrost_mmu_flush_range(pfdev, mmu, start_iova, iova - start_iova);  in mmu_map_sg()
342 	mmu_map_sg(pfdev, mapping->mmu, mapping->mmnode.start << PAGE_SHIFT,  in panfrost_mmu_map()
354 	struct io_pgtable_ops *ops = mapping->mmu->pgtbl_ops;  in panfrost_mmu_unmap()
363 		mapping->mmu->as, iova, len);  in panfrost_mmu_unmap()
379 	panfrost_mmu_flush_range(pfdev, mapping->mmu,  in panfrost_mmu_unmap()
389 	//struct panfrost_mmu *mmu = cookie;  in mmu_tlb_sync_context()
410 	struct panfrost_mmu *mmu;  in addr_to_mapping()  local
413 	list_for_each_entry(mmu, &pfdev->as_lru_list, list) {  in addr_to_mapping()
414 		if (as == mmu->as)  in addr_to_mapping()
421 	spin_lock(&mmu->mm_lock);  in addr_to_mapping()
423 	drm_mm_for_each_node(node, &mmu->mm) {  in addr_to_mapping()
433 	spin_unlock(&mmu->mm_lock);  in addr_to_mapping()
464 	WARN_ON(bomapping->mmu->as != as);  in panfrost_mmu_map_fault_addr()
530 	mmu_map_sg(pfdev, bomapping->mmu, addr,  in panfrost_mmu_map_fault_addr()
556 	struct panfrost_mmu *mmu = container_of(kref, struct panfrost_mmu,  in panfrost_mmu_release_ctx()  local
558 	struct panfrost_device *pfdev = mmu->pfdev;  in panfrost_mmu_release_ctx()
561 	if (mmu->as >= 0) {  in panfrost_mmu_release_ctx()
564 			panfrost_mmu_disable(pfdev, mmu->as);  in panfrost_mmu_release_ctx()
567 		clear_bit(mmu->as, &pfdev->as_alloc_mask);  in panfrost_mmu_release_ctx()
568 		clear_bit(mmu->as, &pfdev->as_in_use_mask);  in panfrost_mmu_release_ctx()
569 		list_del(&mmu->list);  in panfrost_mmu_release_ctx()
573 	free_io_pgtable_ops(mmu->pgtbl_ops);  in panfrost_mmu_release_ctx()
574 	drm_mm_takedown(&mmu->mm);  in panfrost_mmu_release_ctx()
575 	kfree(mmu);  in panfrost_mmu_release_ctx()
578 void panfrost_mmu_ctx_put(struct panfrost_mmu *mmu)  in panfrost_mmu_ctx_put()  argument
580 	kref_put(&mmu->refcount, panfrost_mmu_release_ctx);  in panfrost_mmu_ctx_put()
583 struct panfrost_mmu *panfrost_mmu_ctx_get(struct panfrost_mmu *mmu)  in panfrost_mmu_ctx_get()  argument
585 	kref_get(&mmu->refcount);  in panfrost_mmu_ctx_get()
587 	return mmu;  in panfrost_mmu_ctx_get()
618 	struct panfrost_mmu *mmu;  in panfrost_mmu_ctx_create()  local
620 	mmu = kzalloc(sizeof(*mmu), GFP_KERNEL);  in panfrost_mmu_ctx_create()
621 	if (!mmu)  in panfrost_mmu_ctx_create()
624 	mmu->pfdev = pfdev;  in panfrost_mmu_ctx_create()
625 	spin_lock_init(&mmu->mm_lock);  in panfrost_mmu_ctx_create()
628 	drm_mm_init(&mmu->mm, SZ_32M >> PAGE_SHIFT, (SZ_4G - SZ_32M) >> PAGE_SHIFT);  in panfrost_mmu_ctx_create()
629 	mmu->mm.color_adjust = panfrost_drm_mm_color_adjust;  in panfrost_mmu_ctx_create()
631 	INIT_LIST_HEAD(&mmu->list);  in panfrost_mmu_ctx_create()
632 	mmu->as = -1;  in panfrost_mmu_ctx_create()
634 	mmu->pgtbl_cfg = (struct io_pgtable_cfg) {  in panfrost_mmu_ctx_create()
643 	mmu->pgtbl_ops = alloc_io_pgtable_ops(ARM_MALI_LPAE, &mmu->pgtbl_cfg,  in panfrost_mmu_ctx_create()
644 					      mmu);  in panfrost_mmu_ctx_create()
645 	if (!mmu->pgtbl_ops) {  in panfrost_mmu_ctx_create()
646 		kfree(mmu);  in panfrost_mmu_ctx_create()
650 	kref_init(&mmu->refcount);  in panfrost_mmu_ctx_create()
652 	return mmu;  in panfrost_mmu_ctx_create()
740 			/* Ignore MMU interrupts on this AS until it's been  in panfrost_mmu_irq_handler_thread()
745 			/* Disable the MMU to kill jobs on this AS. */  in panfrost_mmu_irq_handler_thread()
752 		/* If we received new MMU interrupts, process them before returning. */  in panfrost_mmu_irq_handler_thread()
771 	pfdev->mmu_irq = platform_get_irq_byname(to_platform_device(pfdev->dev), "mmu");  in panfrost_mmu_init()
778 					IRQF_SHARED, KBUILD_MODNAME "-mmu",  in panfrost_mmu_init()
782 		dev_err(pfdev->dev, "failed to request mmu irq");  in panfrost_mmu_init()