239 static void guc_ct_ctb_g2h_init(struct xe_device *xe, struct guc_ctb *g2h,  in guc_ct_ctb_g2h_init()  argument
242 	g2h->info.size = CTB_G2H_BUFFER_SIZE / sizeof(u32);  in guc_ct_ctb_g2h_init()
243 	g2h->info.resv_space = G2H_ROOM_BUFFER_SIZE / sizeof(u32);  in guc_ct_ctb_g2h_init()
244 	g2h->info.head = 0;  in guc_ct_ctb_g2h_init()
245 	g2h->info.tail = 0;  in guc_ct_ctb_g2h_init()
246 	g2h->info.space = CIRC_SPACE(g2h->info.tail, g2h->info.head,  in guc_ct_ctb_g2h_init()
247 				     g2h->info.size) -  in guc_ct_ctb_g2h_init()
248 			  g2h->info.resv_space;  in guc_ct_ctb_g2h_init()
249 	g2h->info.broken = false;  in guc_ct_ctb_g2h_init()
251 	g2h->desc = IOSYS_MAP_INIT_OFFSET(map, CTB_DESC_SIZE);  in guc_ct_ctb_g2h_init()
252 	xe_map_memset(xe, &g2h->desc, 0, 0, sizeof(struct guc_ct_buffer_desc));  in guc_ct_ctb_g2h_init()
254 	g2h->cmds = IOSYS_MAP_INIT_OFFSET(map, CTB_DESC_SIZE * 2 +  in guc_ct_ctb_g2h_init()
294 	size = ct->ctbs.g2h.info.size * sizeof(u32);  in guc_ct_ctb_g2h_register()
399 	guc_ct_ctb_g2h_init(xe, &ct->ctbs.g2h, &ct->bo->vmap);  in xe_guc_ct_enable()
486 	return ct->ctbs.g2h.info.space > g2h_len;  in g2h_has_room()
507 	xe_gt_assert(ct_to_gt(ct), g2h_len <= ct->ctbs.g2h.info.space);  in __g2h_reserve_space()
517 		ct->ctbs.g2h.info.space -= g2h_len;  in __g2h_reserve_space()
525 	xe_gt_assert(ct_to_gt(ct), ct->ctbs.g2h.info.space + g2h_len <=  in __g2h_release_space()
526 		     ct->ctbs.g2h.info.size - ct->ctbs.g2h.info.resv_space);  in __g2h_release_space()
529 	ct->ctbs.g2h.info.space += g2h_len;  in __g2h_release_space()
755 		struct guc_ctb *g2h = &ct->ctbs.g2h;  in guc_ct_send_locked()  local
757 		trace_xe_guc_ct_g2h_flow_control(xe, g2h->info.head,  in guc_ct_send_locked()
758 						 desc_read(xe, g2h, tail),  in guc_ct_send_locked()
759 						 g2h->info.size,  in guc_ct_send_locked()
760 						 g2h->info.space,  in guc_ct_send_locked()
766 	(desc_read(ct_to_xe(ct), (&ct->ctbs.g2h), tail) != ct->ctbs.g2h.info.head)  in guc_ct_send_locked()
850 	 !ct->ctbs.g2h.info.broken)  in retry_failure()
1082 		ct->ctbs.g2h.info.broken = true;  in parse_g2h_msg()
1100 		ct->ctbs.g2h.info.broken = true;  in parse_g2h_msg()
1188 	struct guc_ctb *g2h = &ct->ctbs.g2h;  in g2h_read()  local
1203 	if (g2h->info.broken)  in g2h_read()
1209 	tail = desc_read(xe, g2h, tail);  in g2h_read()
1210 	avail = tail - g2h->info.head;  in g2h_read()
1215 		avail += g2h->info.size;  in g2h_read()
1218 	xe_map_memcpy_from(xe, msg, &g2h->cmds, sizeof(u32) * g2h->info.head,  in g2h_read()
1224 		g2h->info.broken = true;  in g2h_read()
1229 	head = (g2h->info.head + 1) % g2h->info.size;  in g2h_read()
1233 	if (avail + head > g2h->info.size) {  in g2h_read()
1234 		u32 avail_til_wrap = g2h->info.size - head;  in g2h_read()
1237 				   &g2h->cmds, sizeof(u32) * head,  in g2h_read()
1240 				   &g2h->cmds, 0,  in g2h_read()
1244 				   &g2h->cmds, sizeof(u32) * head,  in g2h_read()
1265 	g2h->info.head = (head + avail) % g2h->info.size;  in g2h_read()
1266 	desc_write(xe, g2h, head, g2h->info.head);  in g2h_read()
1269 			     action, len, g2h->info.head, tail);  in g2h_read()
1519 		guc_ctb_snapshot_capture(xe, &ct->ctbs.g2h,  in xe_guc_ct_snapshot_capture()
1520 					 &snapshot->g2h, atomic);  in xe_guc_ct_snapshot_capture()
1544 		guc_ctb_snapshot_print(&snapshot->g2h, p);  in xe_guc_ct_snapshot_print()
1566 	guc_ctb_snapshot_free(&snapshot->g2h);  in xe_guc_ct_snapshot_free()