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()
89 	/* Run the MMU operation */  in mmu_hw_do_operation_locked()
97 			       struct panfrost_mmu *mmu,  in mmu_hw_do_operation()  argument
103 	ret = mmu_hw_do_operation_locked(pfdev, mmu->as, iova, size, op);  in mmu_hw_do_operation()
108 static void panfrost_mmu_enable(struct panfrost_device *pfdev, struct panfrost_mmu *mmu)  in panfrost_mmu_enable()  argument
110 	int as_nr = mmu->as;  in panfrost_mmu_enable()
111 	struct io_pgtable_cfg *cfg = &mmu->pgtbl_cfg;  in panfrost_mmu_enable()
142 u32 panfrost_mmu_as_get(struct panfrost_device *pfdev, struct panfrost_mmu *mmu)  in panfrost_mmu_as_get()  argument
148 	as = mmu->as;  in panfrost_mmu_as_get()
150 		int en = atomic_inc_return(&mmu->as_count);  in panfrost_mmu_as_get()
159 		list_move(&mmu->list, &pfdev->as_lru_list);  in panfrost_mmu_as_get()
162 			/* Unhandled pagefault on this AS, the MMU was  in panfrost_mmu_as_get()
163 			 * disabled. We need to re-enable the MMU after  in panfrost_mmu_as_get()
169 			panfrost_mmu_enable(pfdev, mmu);  in panfrost_mmu_as_get()
194 	mmu->as = as;  in panfrost_mmu_as_get()
196 	atomic_set(&mmu->as_count, 1);  in panfrost_mmu_as_get()
197 	list_add(&mmu->list, &pfdev->as_lru_list);  in panfrost_mmu_as_get()
199 	dev_dbg(pfdev->dev, "Assigned AS%d to mmu %p, alloc_mask=%lx", as, mmu, pfdev->as_alloc_mask);  in panfrost_mmu_as_get()
201 	panfrost_mmu_enable(pfdev, mmu);  in panfrost_mmu_as_get()
208 void panfrost_mmu_as_put(struct panfrost_device *pfdev, struct panfrost_mmu *mmu)  in panfrost_mmu_as_put()  argument
210 	atomic_dec(&mmu->as_count);  in panfrost_mmu_as_put()
211 	WARN_ON(atomic_read(&mmu->as_count) < 0);  in panfrost_mmu_as_put()
216 	struct panfrost_mmu *mmu, *mmu_tmp;  in panfrost_mmu_reset()  local
223 	list_for_each_entry_safe(mmu, mmu_tmp, &pfdev->as_lru_list, list) {  in panfrost_mmu_reset()
224 		mmu->as = -1;  in panfrost_mmu_reset()
225 		atomic_set(&mmu->as_count, 0);  in panfrost_mmu_reset()
226 		list_del_init(&mmu->list);  in panfrost_mmu_reset()
244 				     struct panfrost_mmu *mmu,  in panfrost_mmu_flush_range()  argument
247 	if (mmu->as < 0)  in panfrost_mmu_flush_range()
254 		mmu_hw_do_operation(pfdev, mmu, iova, size, AS_COMMAND_FLUSH_PT);  in panfrost_mmu_flush_range()
259 static int mmu_map_sg(struct panfrost_device *pfdev, struct panfrost_mmu *mmu,  in mmu_map_sg()  argument
264 	struct io_pgtable_ops *ops = mmu->pgtbl_ops;  in mmu_map_sg()
271 		dev_dbg(pfdev->dev, "map: as=%d, iova=%llx, paddr=%lx, len=%zx", mmu->as, iova, paddr, len);  in mmu_map_sg()
283 	panfrost_mmu_flush_range(pfdev, mmu, start_iova, iova - start_iova);  in mmu_map_sg()
306 	mmu_map_sg(pfdev, mapping->mmu, mapping->mmnode.start << PAGE_SHIFT,  in panfrost_mmu_map()
318 	struct io_pgtable_ops *ops = mapping->mmu->pgtbl_ops;  in panfrost_mmu_unmap()
327 		mapping->mmu->as, iova, len);  in panfrost_mmu_unmap()
341 	panfrost_mmu_flush_range(pfdev, mapping->mmu,  in panfrost_mmu_unmap()
351 	//struct panfrost_mmu *mmu = cookie;  in mmu_tlb_sync_context()
372 	struct panfrost_mmu *mmu;  in addr_to_mapping()  local
375 	list_for_each_entry(mmu, &pfdev->as_lru_list, list) {  in addr_to_mapping()
376 		if (as == mmu->as)  in addr_to_mapping()
383 	spin_lock(&mmu->mm_lock);  in addr_to_mapping()
385 	drm_mm_for_each_node(node, &mmu->mm) {  in addr_to_mapping()
395 	spin_unlock(&mmu->mm_lock);  in addr_to_mapping()
425 	WARN_ON(bomapping->mmu->as != as);  in panfrost_mmu_map_fault_addr()
487 	mmu_map_sg(pfdev, bomapping->mmu, addr,  in panfrost_mmu_map_fault_addr()
510 	struct panfrost_mmu *mmu = container_of(kref, struct panfrost_mmu,  in panfrost_mmu_release_ctx()  local
512 	struct panfrost_device *pfdev = mmu->pfdev;  in panfrost_mmu_release_ctx()
515 	if (mmu->as >= 0) {  in panfrost_mmu_release_ctx()
518 			panfrost_mmu_disable(pfdev, mmu->as);  in panfrost_mmu_release_ctx()
521 		clear_bit(mmu->as, &pfdev->as_alloc_mask);  in panfrost_mmu_release_ctx()
522 		clear_bit(mmu->as, &pfdev->as_in_use_mask);  in panfrost_mmu_release_ctx()
523 		list_del(&mmu->list);  in panfrost_mmu_release_ctx()
527 	free_io_pgtable_ops(mmu->pgtbl_ops);  in panfrost_mmu_release_ctx()
528 	drm_mm_takedown(&mmu->mm);  in panfrost_mmu_release_ctx()
529 	kfree(mmu);  in panfrost_mmu_release_ctx()
532 void panfrost_mmu_ctx_put(struct panfrost_mmu *mmu)  in panfrost_mmu_ctx_put()  argument
534 	kref_put(&mmu->refcount, panfrost_mmu_release_ctx);  in panfrost_mmu_ctx_put()
537 struct panfrost_mmu *panfrost_mmu_ctx_get(struct panfrost_mmu *mmu)  in panfrost_mmu_ctx_get()  argument
539 	kref_get(&mmu->refcount);  in panfrost_mmu_ctx_get()
541 	return mmu;  in panfrost_mmu_ctx_get()
572 	struct panfrost_mmu *mmu;  in panfrost_mmu_ctx_create()  local
574 	mmu = kzalloc(sizeof(*mmu), GFP_KERNEL);  in panfrost_mmu_ctx_create()
575 	if (!mmu)  in panfrost_mmu_ctx_create()
578 	mmu->pfdev = pfdev;  in panfrost_mmu_ctx_create()
579 	spin_lock_init(&mmu->mm_lock);  in panfrost_mmu_ctx_create()
582 	drm_mm_init(&mmu->mm, SZ_32M >> PAGE_SHIFT, (SZ_4G - SZ_32M) >> PAGE_SHIFT);  in panfrost_mmu_ctx_create()
583 	mmu->mm.color_adjust = panfrost_drm_mm_color_adjust;  in panfrost_mmu_ctx_create()
585 	INIT_LIST_HEAD(&mmu->list);  in panfrost_mmu_ctx_create()
586 	mmu->as = -1;  in panfrost_mmu_ctx_create()
588 	mmu->pgtbl_cfg = (struct io_pgtable_cfg) {  in panfrost_mmu_ctx_create()
597 	mmu->pgtbl_ops = alloc_io_pgtable_ops(ARM_MALI_LPAE, &mmu->pgtbl_cfg,  in panfrost_mmu_ctx_create()
598 					      mmu);  in panfrost_mmu_ctx_create()
599 	if (!mmu->pgtbl_ops) {  in panfrost_mmu_ctx_create()
600 		kfree(mmu);  in panfrost_mmu_ctx_create()
604 	kref_init(&mmu->refcount);  in panfrost_mmu_ctx_create()
606 	return mmu;  in panfrost_mmu_ctx_create()
691 			/* Ignore MMU interrupts on this AS until it's been  in panfrost_mmu_irq_handler_thread()
696 			/* Disable the MMU to kill jobs on this AS. */  in panfrost_mmu_irq_handler_thread()
703 		/* If we received new MMU interrupts, process them before returning. */  in panfrost_mmu_irq_handler_thread()
719 	irq = platform_get_irq_byname(to_platform_device(pfdev->dev), "mmu");  in panfrost_mmu_init()
726 					IRQF_SHARED, KBUILD_MODNAME "-mmu",  in panfrost_mmu_init()
730 		dev_err(pfdev->dev, "failed to request mmu irq");  in panfrost_mmu_init()