100 	struct ntb_dev *ntb;  member
121 	link = ntb_link_is_up(pp->ntb, NULL, NULL);  in pp_find_next_peer()
146 	ntb_db_set_mask(pp->ntb, pp->in_db);  in pp_setup()
152 		dev_dbg(&pp->ntb->dev, "Got no peers, so cancel\n");  in pp_setup()
156 	dev_dbg(&pp->ntb->dev, "Ping-pong started with port %d, db %#llx\n",  in pp_setup()
157 		ntb_peer_port_number(pp->ntb, pp->out_pidx), pp->out_db);  in pp_setup()
166 	ntb_db_set_mask(pp->ntb, pp->in_db);  in pp_clear()
168 	dev_dbg(&pp->ntb->dev, "Ping-pong cancelled\n");  in pp_clear()
178 	ntb_peer_spad_write(pp->ntb, pp->out_pidx, 0, count);  in pp_ping()
179 	ntb_peer_msg_write(pp->ntb, pp->out_pidx, 0, count);  in pp_ping()
181 	dev_dbg(&pp->ntb->dev, "Ping port %d spad %#x, msg %#x\n",  in pp_ping()
182 		ntb_peer_port_number(pp->ntb, pp->out_pidx), count, count);  in pp_ping()
184 	ntb_peer_db_set(pp->ntb, pp->out_db);  in pp_ping()
185 	ntb_db_clear_mask(pp->ntb, pp->in_db);  in pp_ping()
195 	spad_data = ntb_spad_read(pp->ntb, 0);  in pp_pong()
196 	msg_data = ntb_msg_read(pp->ntb, &pidx, 0);  in pp_pong()
197 	ntb_msg_clear_sts(pp->ntb, -1);  in pp_pong()
204 	dev_dbg(&pp->ntb->dev, "Pong spad %#x, msg %#x (port %d)\n",  in pp_pong()
205 		spad_data, msg_data, ntb_peer_port_number(pp->ntb, pidx));  in pp_pong()
209 	ntb_db_set_mask(pp->ntb, pp->in_db);  in pp_pong()
210 	ntb_db_clear(pp->ntb, pp->in_db);  in pp_pong()
243 static int pp_check_ntb(struct ntb_dev *ntb)  in pp_check_ntb()  argument
247 	if (ntb_db_is_unsafe(ntb)) {  in pp_check_ntb()
248 		dev_dbg(&ntb->dev, "Doorbell is unsafe\n");  in pp_check_ntb()
253 	if (ntb_spad_is_unsafe(ntb)) {  in pp_check_ntb()
254 		dev_dbg(&ntb->dev, "Scratchpad is unsafe\n");  in pp_check_ntb()
259 	pmask = GENMASK_ULL(ntb_peer_port_count(ntb), 0);  in pp_check_ntb()
260 	if ((ntb_db_valid_mask(ntb) & pmask) != pmask) {  in pp_check_ntb()
261 		dev_err(&ntb->dev, "Unsupported DB configuration\n");  in pp_check_ntb()
265 	if (ntb_spad_count(ntb) < 1 && ntb_msg_count(ntb) < 1) {  in pp_check_ntb()
266 		dev_err(&ntb->dev, "Scratchpads and messages unsupported\n");  in pp_check_ntb()
268 	} else if (ntb_spad_count(ntb) < 1) {  in pp_check_ntb()
269 		dev_dbg(&ntb->dev, "Scratchpads unsupported\n");  in pp_check_ntb()
270 	} else if (ntb_msg_count(ntb) < 1) {  in pp_check_ntb()
271 		dev_dbg(&ntb->dev, "Messages unsupported\n");  in pp_check_ntb()
277 static struct pp_ctx *pp_create_data(struct ntb_dev *ntb)  in pp_create_data()  argument
281 	pp = devm_kzalloc(&ntb->dev, sizeof(*pp), GFP_KERNEL);  in pp_create_data()
285 	pp->ntb = ntb;  in pp_create_data()
299 	lport = ntb_port_number(pp->ntb);  in pp_init_flds()
300 	pcnt = ntb_peer_port_count(pp->ntb);  in pp_init_flds()
302 		if (lport < ntb_peer_port_number(pp->ntb, pidx))  in pp_init_flds()
310 	dev_dbg(&pp->ntb->dev, "Inbound db %#llx, prev %#llx, next %#llx\n",  in pp_init_flds()
319 	db_mask = ntb_db_valid_mask(pp->ntb);  in pp_mask_events()
320 	ret = ntb_db_set_mask(pp->ntb, db_mask);  in pp_mask_events()
325 	if (ntb_msg_count(pp->ntb) < 1)  in pp_mask_events()
328 	msg_mask = ntb_msg_outbits(pp->ntb) | ntb_msg_inbits(pp->ntb);  in pp_mask_events()
329 	return ntb_msg_set_mask(pp->ntb, msg_mask);  in pp_mask_events()
336 	ret = ntb_set_ctx(pp->ntb, pp, &pp_ops);  in pp_setup_ctx()
340 	ntb_link_enable(pp->ntb, NTB_SPEED_AUTO, NTB_WIDTH_AUTO);  in pp_setup_ctx()
342 	ntb_link_event(pp->ntb);  in pp_setup_ctx()
349 	ntb_link_disable(pp->ntb);  in pp_clear_ctx()
351 	ntb_clear_ctx(pp->ntb);  in pp_clear_ctx()
356 	struct pci_dev *pdev = pp->ntb->pdev;  in pp_setup_dbgfs()
363 		dev_warn(&pp->ntb->dev, "DebugFS unsupported\n");  in pp_setup_dbgfs()
371 static int pp_probe(struct ntb_client *client, struct ntb_dev *ntb)  in pp_probe()  argument
376 	ret = pp_check_ntb(ntb);  in pp_probe()
380 	pp = pp_create_data(ntb);  in pp_probe()
399 static void pp_remove(struct ntb_client *client, struct ntb_dev *ntb)  in pp_remove()  argument
401 	struct pp_ctx *pp = ntb->ctx;  in pp_remove()