100 	struct ntb_dev *ntb;  member
121 	link = ntb_link_is_up(pp->ntb, NULL, NULL);  in pp_find_next_peer()
131 	out_db = BIT_ULL(ntb_peer_port_number(pp->ntb, pidx));  in pp_find_next_peer()
145 	ntb_db_set_mask(pp->ntb, pp->in_db);  in pp_setup()
151 		dev_dbg(&pp->ntb->dev, "Got no peers, so cancel\n");  in pp_setup()
155 	dev_dbg(&pp->ntb->dev, "Ping-pong started with port %d, db %#llx\n",  in pp_setup()
156 		ntb_peer_port_number(pp->ntb, pp->out_pidx), pp->out_db);  in pp_setup()
165 	ntb_db_set_mask(pp->ntb, pp->in_db);  in pp_clear()
167 	dev_dbg(&pp->ntb->dev, "Ping-pong cancelled\n");  in pp_clear()
177 	ntb_peer_spad_write(pp->ntb, pp->out_pidx, 0, count);  in pp_ping()
178 	ntb_peer_msg_write(pp->ntb, pp->out_pidx, 0, count);  in pp_ping()
180 	dev_dbg(&pp->ntb->dev, "Ping port %d spad %#x, msg %#x\n",  in pp_ping()
181 		ntb_peer_port_number(pp->ntb, pp->out_pidx), count, count);  in pp_ping()
183 	ntb_peer_db_set(pp->ntb, pp->out_db);  in pp_ping()
184 	ntb_db_clear_mask(pp->ntb, pp->in_db);  in pp_ping()
194 	spad_data = ntb_spad_read(pp->ntb, 0);  in pp_pong()
195 	msg_data = ntb_msg_read(pp->ntb, &pidx, 0);  in pp_pong()
196 	ntb_msg_clear_sts(pp->ntb, -1);  in pp_pong()
203 	dev_dbg(&pp->ntb->dev, "Pong spad %#x, msg %#x (port %d)\n",  in pp_pong()
204 		spad_data, msg_data, ntb_peer_port_number(pp->ntb, pidx));  in pp_pong()
208 	ntb_db_set_mask(pp->ntb, pp->in_db);  in pp_pong()
209 	ntb_db_clear(pp->ntb, pp->in_db);  in pp_pong()
242 static int pp_check_ntb(struct ntb_dev *ntb)  in pp_check_ntb()  argument
246 	if (ntb_db_is_unsafe(ntb)) {  in pp_check_ntb()
247 		dev_dbg(&ntb->dev, "Doorbell is unsafe\n");  in pp_check_ntb()
252 	if (ntb_spad_is_unsafe(ntb)) {  in pp_check_ntb()
253 		dev_dbg(&ntb->dev, "Scratchpad is unsafe\n");  in pp_check_ntb()
258 	pmask = GENMASK_ULL(ntb_peer_port_count(ntb), 0);  in pp_check_ntb()
259 	if ((ntb_db_valid_mask(ntb) & pmask) != pmask) {  in pp_check_ntb()
260 		dev_err(&ntb->dev, "Unsupported DB configuration\n");  in pp_check_ntb()
264 	if (ntb_spad_count(ntb) < 1 && ntb_msg_count(ntb) < 1) {  in pp_check_ntb()
265 		dev_err(&ntb->dev, "Scratchpads and messages unsupported\n");  in pp_check_ntb()
267 	} else if (ntb_spad_count(ntb) < 1) {  in pp_check_ntb()
268 		dev_dbg(&ntb->dev, "Scratchpads unsupported\n");  in pp_check_ntb()
269 	} else if (ntb_msg_count(ntb) < 1) {  in pp_check_ntb()
270 		dev_dbg(&ntb->dev, "Messages unsupported\n");  in pp_check_ntb()
276 static struct pp_ctx *pp_create_data(struct ntb_dev *ntb)  in pp_create_data()  argument
280 	pp = devm_kzalloc(&ntb->dev, sizeof(*pp), GFP_KERNEL);  in pp_create_data()
284 	pp->ntb = ntb;  in pp_create_data()
298 	lport = ntb_port_number(pp->ntb);  in pp_init_flds()
299 	pcnt = ntb_peer_port_count(pp->ntb);  in pp_init_flds()
301 		if (lport < ntb_peer_port_number(pp->ntb, pidx))  in pp_init_flds()
309 	dev_dbg(&pp->ntb->dev, "Inbound db %#llx, prev %#llx, next %#llx\n",  in pp_init_flds()
318 	db_mask = ntb_db_valid_mask(pp->ntb);  in pp_mask_events()
319 	ret = ntb_db_set_mask(pp->ntb, db_mask);  in pp_mask_events()
324 	if (ntb_msg_count(pp->ntb) < 1)  in pp_mask_events()
327 	msg_mask = ntb_msg_outbits(pp->ntb) | ntb_msg_inbits(pp->ntb);  in pp_mask_events()
328 	return ntb_msg_set_mask(pp->ntb, msg_mask);  in pp_mask_events()
335 	ret = ntb_set_ctx(pp->ntb, pp, &pp_ops);  in pp_setup_ctx()
339 	ntb_link_enable(pp->ntb, NTB_SPEED_AUTO, NTB_WIDTH_AUTO);  in pp_setup_ctx()
341 	ntb_link_event(pp->ntb);  in pp_setup_ctx()
348 	ntb_link_disable(pp->ntb);  in pp_clear_ctx()
350 	ntb_clear_ctx(pp->ntb);  in pp_clear_ctx()
355 	struct pci_dev *pdev = pp->ntb->pdev;  in pp_setup_dbgfs()
367 static int pp_probe(struct ntb_client *client, struct ntb_dev *ntb)  in pp_probe()  argument
372 	ret = pp_check_ntb(ntb);  in pp_probe()
376 	pp = pp_create_data(ntb);  in pp_probe()
395 static void pp_remove(struct ntb_client *client, struct ntb_dev *ntb)  in pp_remove()  argument
397 	struct pp_ctx *pp = ntb->ctx;  in pp_remove()