31 int ntb_msi_init(struct ntb_dev *ntb,  in ntb_msi_init()  argument
42 	peers = ntb_peer_port_count(ntb);  in ntb_msi_init()
46 	struct_size = sizeof(*ntb->msi) + sizeof(*ntb->msi->peer_mws) * peers;  in ntb_msi_init()
48 	ntb->msi = devm_kzalloc(&ntb->dev, struct_size, GFP_KERNEL);  in ntb_msi_init()
49 	if (!ntb->msi)  in ntb_msi_init()
52 	ntb->msi->desc_changed = desc_changed;  in ntb_msi_init()
55 		peer_widx = ntb_peer_mw_count(ntb) - 1 - i;  in ntb_msi_init()
57 		ret = ntb_peer_mw_get_addr(ntb, peer_widx, &mw_phys_addr,  in ntb_msi_init()
62 		ntb->msi->peer_mws[i] = devm_ioremap(&ntb->dev, mw_phys_addr,  in ntb_msi_init()
64 		if (!ntb->msi->peer_mws[i]) {  in ntb_msi_init()
74 		if (ntb->msi->peer_mws[i])  in ntb_msi_init()
75 			devm_iounmap(&ntb->dev, ntb->msi->peer_mws[i]);  in ntb_msi_init()
77 	devm_kfree(&ntb->dev, ntb->msi);  in ntb_msi_init()
78 	ntb->msi = NULL;  in ntb_msi_init()
97 int ntb_msi_setup_mws(struct ntb_dev *ntb)  in ntb_msi_setup_mws()  argument
108 	if (!ntb->msi)  in ntb_msi_setup_mws()
111 	desc = first_msi_entry(&ntb->pdev->dev);  in ntb_msi_setup_mws()
114 	for (peer = 0; peer < ntb_peer_port_count(ntb); peer++) {  in ntb_msi_setup_mws()
115 		peer_widx = ntb_peer_highest_mw_idx(ntb, peer);  in ntb_msi_setup_mws()
119 		ret = ntb_mw_get_align(ntb, peer, peer_widx, &addr_align,  in ntb_msi_setup_mws()
127 	for (peer = 0; peer < ntb_peer_port_count(ntb); peer++) {  in ntb_msi_setup_mws()
128 		peer_widx = ntb_peer_highest_mw_idx(ntb, peer);  in ntb_msi_setup_mws()
134 		ret = ntb_mw_get_align(ntb, peer, peer_widx, NULL,  in ntb_msi_setup_mws()
144 		ret = ntb_mw_set_trans(ntb, peer, peer_widx,  in ntb_msi_setup_mws()
150 	ntb->msi->base_addr = addr;  in ntb_msi_setup_mws()
151 	ntb->msi->end_addr = addr + mw_min_size;  in ntb_msi_setup_mws()
157 		peer_widx = ntb_peer_highest_mw_idx(ntb, peer);  in ntb_msi_setup_mws()
161 		ntb_mw_clear_trans(ntb, i, peer_widx);  in ntb_msi_setup_mws()
174 void ntb_msi_clear_mws(struct ntb_dev *ntb)  in ntb_msi_clear_mws()  argument
179 	for (peer = 0; peer < ntb_peer_port_count(ntb); peer++) {  in ntb_msi_clear_mws()
180 		peer_widx = ntb_peer_highest_mw_idx(ntb, peer);  in ntb_msi_clear_mws()
184 		ntb_mw_clear_trans(ntb, peer, peer_widx);  in ntb_msi_clear_mws()
190 	struct ntb_dev *ntb;  member
195 static int ntb_msi_set_desc(struct ntb_dev *ntb, struct msi_desc *entry,  in ntb_msi_set_desc()  argument
203 	if (addr < ntb->msi->base_addr || addr >= ntb->msi->end_addr) {  in ntb_msi_set_desc()
204 		dev_warn_once(&ntb->dev,  in ntb_msi_set_desc()
206 			      entry->irq, addr, ntb->msi->base_addr,  in ntb_msi_set_desc()
207 			      ntb->msi->end_addr);  in ntb_msi_set_desc()
211 	msi_desc->addr_offset = addr - ntb->msi->base_addr;  in ntb_msi_set_desc()
221 	WARN_ON(ntb_msi_set_desc(dr->ntb, entry, dr->msi_desc));  in ntb_msi_write_msg()
223 	if (dr->ntb->msi->desc_changed)  in ntb_msi_write_msg()
224 		dr->ntb->msi->desc_changed(dr->ntb->ctx);  in ntb_msi_write_msg()
235 static int ntbm_msi_setup_callback(struct ntb_dev *ntb, struct msi_desc *entry,  in ntbm_msi_setup_callback()  argument
245 	dr->ntb = ntb;  in ntbm_msi_setup_callback()
249 	devres_add(&ntb->dev, dr);  in ntbm_msi_setup_callback()
279 int ntbm_msi_request_threaded_irq(struct ntb_dev *ntb, irq_handler_t handler,  in ntbm_msi_request_threaded_irq()  argument
288 	if (!ntb->msi)  in ntbm_msi_request_threaded_irq()
291 	for_each_pci_msi_entry(entry, ntb->pdev) {  in ntbm_msi_request_threaded_irq()
296 		ret = devm_request_threaded_irq(&ntb->dev, entry->irq, handler,  in ntbm_msi_request_threaded_irq()
301 		if (ntb_msi_set_desc(ntb, entry, msi_desc)) {  in ntbm_msi_request_threaded_irq()
302 			devm_free_irq(&ntb->dev, entry->irq, dev_id);  in ntbm_msi_request_threaded_irq()
306 		ret = ntbm_msi_setup_callback(ntb, entry, msi_desc);  in ntbm_msi_request_threaded_irq()
308 			devm_free_irq(&ntb->dev, entry->irq, dev_id);  in ntbm_msi_request_threaded_irq()
322 	struct ntb_dev *ntb = dev_ntb(dev);  in ntbm_msi_callback_match()  local
325 	return dr->ntb == ntb && dr->entry == data;  in ntbm_msi_callback_match()
337 void ntbm_msi_free_irq(struct ntb_dev *ntb, unsigned int irq, void *dev_id)  in ntbm_msi_free_irq()  argument
344 	WARN_ON(devres_destroy(&ntb->dev, ntbm_msi_callback_release,  in ntbm_msi_free_irq()
347 	devm_free_irq(&ntb->dev, irq, dev_id);  in ntbm_msi_free_irq()
363 int ntb_msi_peer_trigger(struct ntb_dev *ntb, int peer,  in ntb_msi_peer_trigger()  argument
368 	if (!ntb->msi)  in ntb_msi_peer_trigger()
371 	idx = desc->addr_offset / sizeof(*ntb->msi->peer_mws[peer]);  in ntb_msi_peer_trigger()
373 	iowrite32(desc->data, &ntb->msi->peer_mws[peer][idx]);  in ntb_msi_peer_trigger()
393 int ntb_msi_peer_addr(struct ntb_dev *ntb, int peer,  in ntb_msi_peer_addr()  argument
397 	int peer_widx = ntb_peer_mw_count(ntb) - 1 - peer;  in ntb_msi_peer_addr()
401 	ret = ntb_peer_mw_get_addr(ntb, peer_widx, &mw_phys_addr, NULL);  in ntb_msi_peer_addr()