1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3  * Copyright (c) 2014-2015 Hisilicon Limited.
231 /* hnae_ring->flags fields */
233 #define is_tx_ring(ring) ((ring)->flags & RINGF_DIR)
278 	u32 buf_size;       /* size for hnae_desc->addr, preset by AE */
283 	int next_to_use;    /* idx of next spare desc */
301 	((ring)->p = ((ring)->p + 1) % (ring)->desc_num)
303 	((ring)->p = ((ring)->p - 1 + (ring)->desc_num) % (ring)->desc_num)
311 	assert((idx) >= 0 && (idx) < (ring)->desc_num)
321 	return (end - begin + ring->desc_num) % ring->desc_num;  in ring_dist()
326 	return ring->desc_num -  in ring_space()
327 		ring_dist(ring, ring->next_to_clean, ring->next_to_use) - 1;  in ring_space()
332 	assert_is_ring_idx(ring, ring->next_to_use);  in is_ring_empty()
333 	assert_is_ring_idx(ring, ring->next_to_clean);  in is_ring_empty()
335 	return ring->next_to_use == ring->next_to_clean;  in is_ring_empty()
338 #define hnae_buf_size(_ring) ((_ring)->buf_size)
403  *   non-ok
458  *   get regs dump
460  *   get the len of the regs dump
559 	struct list_head node;    /* list to hnae_ae_dev->handle_list */
564 #define ring_to_dev(ring) ((ring)->q->dev->dev)
580 	(q)->tx_ring.io_base + RCB_REG_TAIL)
589 	struct hnae_buf_ops *bops = ring->q->handle->bops;  in hnae_reserve_buffer_map()
592 	ret = bops->alloc_buffer(ring, cb);  in hnae_reserve_buffer_map()
596 	ret = bops->map_buffer(ring, cb);  in hnae_reserve_buffer_map()
603 	bops->free_buffer(ring, cb);  in hnae_reserve_buffer_map()
610 	int ret = hnae_reserve_buffer_map(ring, &ring->desc_cb[i]);  in hnae_alloc_buffer_attach()
615 	ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma);  in hnae_alloc_buffer_attach()
622 	ring->q->handle->bops->unmap_buffer(ring, &ring->desc_cb[i]);  in hnae_buffer_detach()
623 	ring->desc[i].addr = 0;  in hnae_buffer_detach()
628 	struct hnae_buf_ops *bops = ring->q->handle->bops;  in hnae_free_buffer_detach()
629 	struct hnae_desc_cb *cb = &ring->desc_cb[i];  in hnae_free_buffer_detach()
631 	if (!ring->desc_cb[i].dma)  in hnae_free_buffer_detach()
635 	bops->free_buffer(ring, cb);  in hnae_free_buffer_detach()
638 /* detach a in-used buffer and replace with a reserved one  */
642 	struct hnae_buf_ops *bops = ring->q->handle->bops;  in hnae_replace_buffer()
644 	bops->unmap_buffer(ring, &ring->desc_cb[i]);  in hnae_replace_buffer()
645 	ring->desc_cb[i] = *res_cb;  in hnae_replace_buffer()
646 	ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma);  in hnae_replace_buffer()
647 	ring->desc[i].rx.ipoff_bnum_pid_flag = 0;  in hnae_replace_buffer()
652 	ring->desc_cb[i].reuse_flag = 0;  in hnae_reuse_buffer()
653 	ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma  in hnae_reuse_buffer()
654 		+ ring->desc_cb[i].page_offset);  in hnae_reuse_buffer()
655 	ring->desc[i].rx.ipoff_bnum_pid_flag = 0;  in hnae_reuse_buffer()
664 	for (i = 0; i < h->q_num; i++) {  in hnae_reinit_all_ring_desc()
665 		ring = &h->qs[i]->rx_ring;  in hnae_reinit_all_ring_desc()
666 		for (j = 0; j < ring->desc_num; j++)  in hnae_reinit_all_ring_desc()
667 			ring->desc[j].addr = cpu_to_le64(ring->desc_cb[j].dma);  in hnae_reinit_all_ring_desc()
679 	for (i = 0; i < h->q_num; i++) {  in hnae_reinit_all_ring_page_off()
680 		ring = &h->qs[i]->rx_ring;  in hnae_reinit_all_ring_page_off()
681 		for (j = 0; j < ring->desc_num; j++) {  in hnae_reinit_all_ring_page_off()
682 			ring->desc_cb[j].page_offset = 0;  in hnae_reinit_all_ring_page_off()
683 			if (ring->desc[j].addr !=  in hnae_reinit_all_ring_page_off()
684 			    cpu_to_le64(ring->desc_cb[j].dma))  in hnae_reinit_all_ring_page_off()
685 				ring->desc[j].addr =  in hnae_reinit_all_ring_page_off()
686 					cpu_to_le64(ring->desc_cb[j].dma);  in hnae_reinit_all_ring_page_off()