hw/mthca/mthca_mr.c

554 /* Free mr or fmr */
701 int mthca_free_fmr(struct mthca_dev *dev, struct mthca_fmr *fmr)
703 	if (fmr->maps)
706 	mthca_free_region(dev, fmr->ibmr.lkey);
707 	mthca_free_mtt(dev, fmr->mtt);
712 static inline int mthca_check_fmr(struct mthca_fmr *fmr, u64 *page_list,
717 	if (list_len > fmr->attr.max_pages)
720 	page_mask = (1 << fmr->attr.page_shift) - 1;
733 	if (fmr->maps >= fmr->attr.max_maps)
743 	struct mthca_fmr *fmr = to_mfmr(ibfmr);
749 	err = mthca_check_fmr(fmr, page_list, list_len, iova);
753 	++fmr->maps;
755 	key = tavor_key_to_hw_index(fmr->ibmr.lkey);
757 	fmr->ibmr.lkey = fmr->ibmr.rkey = tavor_hw_index_to_key(key);
759 	writeb(MTHCA_MPT_STATUS_SW, fmr->mem.tavor.mpt);
764 		mthca_write64_raw(mtt_entry, fmr->mem.tavor.mtts + i);
768 	mpt_entry.length = cpu_to_be64(list_len * (1ull << fmr->attr.page_shift));
771 	__raw_writel((__force u32) mpt_entry.lkey, &fmr->mem.tavor.mpt->key);
772 	memcpy_toio(&fmr->mem.tavor.mpt->start, &mpt_entry.start,
776 	writeb(MTHCA_MPT_STATUS_HW, fmr->mem.tavor.mpt);
784 	struct mthca_fmr *fmr = to_mfmr(ibfmr);
789 	err = mthca_check_fmr(fmr, page_list, list_len, iova);
793 	++fmr->maps;
795 	key = arbel_key_to_hw_index(fmr->ibmr.lkey);
800 	fmr->ibmr.lkey = fmr->ibmr.rkey = arbel_hw_index_to_key(key);
802 	*(u8 *) fmr->mem.arbel.mpt = MTHCA_MPT_STATUS_SW;
807 		fmr->mem.arbel.mtts[i] = cpu_to_be64(page_list[i] |
810 	dma_sync_single(&dev->pdev->dev, fmr->mem.arbel.dma_handle,
813 	fmr->mem.arbel.mpt->key    = cpu_to_be32(key);
814 	fmr->mem.arbel.mpt->lkey   = cpu_to_be32(key);
815 	fmr->mem.arbel.mpt->length = cpu_to_be64(list_len * (1ull << fmr->attr.page_shift));
816 	fmr->mem.arbel.mpt->start  = cpu_to_be64(iova);
820 	*(u8 *) fmr->mem.arbel.mpt = MTHCA_MPT_STATUS_HW;
827 void mthca_tavor_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr)
829 	if (!fmr->maps)
832 	fmr->maps = 0;
834 	writeb(MTHCA_MPT_STATUS_SW, fmr->mem.tavor.mpt);
837 void mthca_arbel_fmr_unmap(struct mthca_dev *dev, struct mthca_fmr *fmr)
839 	if (!fmr->maps)
842 	fmr->maps = 0;
844 	*(u8 *) fmr->mem.arbel.mpt = MTHCA_MPT_STATUS_SW;