drm/panfrost/panfrost_mmu.c

113 			       struct panfrost_mmu *mmu,
119 	ret = mmu_hw_do_operation_locked(pfdev, mmu->as, iova, size, op);
124 static void panfrost_mmu_enable(struct panfrost_device *pfdev, struct panfrost_mmu *mmu)
126 	int as_nr = mmu->as;
127 	struct io_pgtable_cfg *cfg = &mmu->pgtbl_cfg;
158 u32 panfrost_mmu_as_get(struct panfrost_device *pfdev, struct panfrost_mmu *mmu)
164 	as = mmu->as;
166 		int en = atomic_inc_return(&mmu->as_count);
175 		list_move(&mmu->list, &pfdev->as_lru_list);
185 			panfrost_mmu_enable(pfdev, mmu);
210 	mmu->as = as;
212 	atomic_set(&mmu->as_count, 1);
213 	list_add(&mmu->list, &pfdev->as_lru_list);
215 	dev_dbg(pfdev->dev, "Assigned AS%d to mmu %p, alloc_mask=%lx", as, mmu, pfdev->as_alloc_mask);
217 	panfrost_mmu_enable(pfdev, mmu);
224 void panfrost_mmu_as_put(struct panfrost_device *pfdev, struct panfrost_mmu *mmu)
226 	atomic_dec(&mmu->as_count);
227 	WARN_ON(atomic_read(&mmu->as_count) < 0);
232 	struct panfrost_mmu *mmu, *mmu_tmp;
241 	list_for_each_entry_safe(mmu, mmu_tmp, &pfdev->as_lru_list, list) {
242 		mmu->as = -1;
243 		atomic_set(&mmu->as_count, 0);
244 		list_del_init(&mmu->list);
275 				     struct panfrost_mmu *mmu,
278 	if (mmu->as < 0)
285 		mmu_hw_do_operation(pfdev, mmu, iova, size, AS_COMMAND_FLUSH_PT);
290 static int mmu_map_sg(struct panfrost_device *pfdev, struct panfrost_mmu *mmu,
295 	struct io_pgtable_ops *ops = mmu->pgtbl_ops;
302 		dev_dbg(pfdev->dev, "map: as=%d, iova=%llx, paddr=%lx, len=%zx", mmu->as, iova, paddr, len);
318 	panfrost_mmu_flush_range(pfdev, mmu, start_iova, iova - start_iova);
342 	mmu_map_sg(pfdev, mapping->mmu, mapping->mmnode.start << PAGE_SHIFT,
354 	struct io_pgtable_ops *ops = mapping->mmu->pgtbl_ops;
363 		mapping->mmu->as, iova, len);
379 	panfrost_mmu_flush_range(pfdev, mapping->mmu,
389 	//struct panfrost_mmu *mmu = cookie;
410 	struct panfrost_mmu *mmu;
413 	list_for_each_entry(mmu, &pfdev->as_lru_list, list) {
414 		if (as == mmu->as)
421 	spin_lock(&mmu->mm_lock);
423 	drm_mm_for_each_node(node, &mmu->mm) {
433 	spin_unlock(&mmu->mm_lock);
464 	WARN_ON(bomapping->mmu->as != as);
530 	mmu_map_sg(pfdev, bomapping->mmu, addr,
556 	struct panfrost_mmu *mmu = container_of(kref, struct panfrost_mmu,
558 	struct panfrost_device *pfdev = mmu->pfdev;
561 	if (mmu->as >= 0) {
564 			panfrost_mmu_disable(pfdev, mmu->as);
567 		clear_bit(mmu->as, &pfdev->as_alloc_mask);
568 		clear_bit(mmu->as, &pfdev->as_in_use_mask);
569 		list_del(&mmu->list);
573 	free_io_pgtable_ops(mmu->pgtbl_ops);
574 	drm_mm_takedown(&mmu->mm);
575 	kfree(mmu);
578 void panfrost_mmu_ctx_put(struct panfrost_mmu *mmu)
580 	kref_put(&mmu->refcount, panfrost_mmu_release_ctx);
583 struct panfrost_mmu *panfrost_mmu_ctx_get(struct panfrost_mmu *mmu)
585 	kref_get(&mmu->refcount);
587 	return mmu;
618 	struct panfrost_mmu *mmu;
620 	mmu = kzalloc(sizeof(*mmu), GFP_KERNEL);
621 	if (!mmu)
624 	mmu->pfdev = pfdev;
625 	spin_lock_init(&mmu->mm_lock);
628 	drm_mm_init(&mmu->mm, SZ_32M >> PAGE_SHIFT, (SZ_4G - SZ_32M) >> PAGE_SHIFT);
629 	mmu->mm.color_adjust = panfrost_drm_mm_color_adjust;
631 	INIT_LIST_HEAD(&mmu->list);
632 	mmu->as = -1;
634 	mmu->pgtbl_cfg = (struct io_pgtable_cfg) {
643 	mmu->pgtbl_ops = alloc_io_pgtable_ops(ARM_MALI_LPAE, &mmu->pgtbl_cfg,
644 					      mmu);
645 	if (!mmu->pgtbl_ops) {
646 		kfree(mmu);
650 	kref_init(&mmu->refcount);
652 	return mmu;
771 	pfdev->mmu_irq = platform_get_irq_byname(to_platform_device(pfdev->dev), "mmu");
778 					IRQF_SHARED, KBUILD_MODNAME "-mmu",
782 		dev_err(pfdev->dev, "failed to request mmu irq");