40  * floppy to DMA only via the scatter/gather window set up for 8MB
62  * NOTE: Herein lie back-to-back mb instructions.  They are magic. 
108  *  3 2|1 0 9 8|7 6 5 4|3 2 1 0|9 8 7 6|5 4 3 2|1 0 9 8|7 6 5 4|3 2 1 0
114  * 	10:8	Function number
120  *  3 2|1 0 9 8|7 6 5 4|3 2 1 0|9 8 7 6|5 4 3 2|1 0 9 8|7 6 5 4|3 2 1 0
126  *	23:16	bus number (8 bits = 128 possible buses)
128  *	10:8	function number
156 		if (device > 8) {  in mk_conf_addr()
163 		addr = (0x0800L << device) | ((device_fn & 7) << 8) | (where);  in mk_conf_addr()
167 		addr = (bus << 16) | (device_fn << 8) | (where);  in mk_conf_addr()
194 		mb();  in conf_read()
196 	mb();  in conf_read()
202 	mb();  in conf_read()
206 	mb();  in conf_read()
207 	mb();  /* magic */  in conf_read()
219 		mb();  in conf_read()
223 	mb();  in conf_read()
228 		mb();  in conf_read()
246 		mb();  in conf_write()
248 	mb();  in conf_write()
254 	mb();  in conf_write()
258 	mb();  in conf_write()
259 	mb();  /* magic */  in conf_write()
270 		mb();  in conf_write()
274 	mb();  in conf_write()
279 		mb();  in conf_write()
295 	mask = (size - 1) * 8;  in t2_read_config()
296 	shift = (where & 3) * 8;  in t2_read_config()
313 	mask = (size - 1) * 8;  in t2_write_config()
315 	conf_write(addr, value << ((where & 3) * 8), type1);  in t2_write_config()
362 	mb();  in t2_sg_map_window2()
426 		mb();	  in t2_init_arch()
466 	*(vulp)T2_HAE_1 = 0; mb(); /* Sparse MEM HAE */  in t2_init_arch()
467 	*(vulp)T2_HAE_2 = 0; mb(); /* Sparse I/O HAE */  in t2_init_arch()
468 	*(vulp)T2_HAE_3 = 0; mb(); /* Config Space HAE */  in t2_init_arch()
479 	*(vulp)T2_HAE_4 = 0; mb();  in t2_init_arch()
494 	mb();  in t2_kill_arch()
501 	mb();  in t2_kill_arch()
514 	mb();  in t2_pci_tbi()
519 	mb();  in t2_pci_tbi()
543 	mb();  in t2_clear_errors()
544 	mb();  /* magic */  in t2_clear_errors()
565 	mb();  in t2_machine_check()
566 	mb();  /* magic */  in t2_machine_check()
573 	mb();  in t2_machine_check()
605 		    mb();  in t2_machine_check()
609 			mb();  in t2_machine_check()