34  * NOTE: Herein lie back-to-back mb instructions.  They are magic. 
57  *  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
63  * 	10:8	Function number
69  *  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
75  *	23:16	bus number (8 bits = 128 possible buses)
77  *	10:8	function number
96 	*pci_addr = (bus << 16) | (device_fn << 8) | where;  in mk_conf_addr()
118 	mb();  in conf_read()
125 		mb();  in conf_read()
129 	mb();  in conf_read()
133 	mb();  in conf_read()
137 	mb();  in conf_read()
138 	mb();  /* magic */  in conf_read()
142 		mb();  in conf_read()
145 	mb();  in conf_read()
150 		mb();  in conf_read()
172 	mb();  in conf_write()
179 		mb();  in conf_write()
183 	mb();  in conf_write()
187 	mb();  in conf_write()
191 	mb();  in conf_write()
195 	mb();  in conf_write()
200 		mb();  in conf_write()
220 	mask = (size - 1) * 8;  in cia_read_config()
221 	shift = (where & 3) * 8;  in cia_read_config()
238 	mask = (size - 1) * 8;  in cia_write_config()
240 	conf_write(addr, value << ((where & 3) * 8), type1);  in cia_write_config()
261 	mb();  in cia_pci_tbi()
291 	mb();  in cia_pci_tbi_try2()
294 	mb();  in cia_pci_tbi_try2()
296 	mb();  in cia_pci_tbi_try2()
320 	mb();  in cia_pci_tbi_try2()
322 	mb();  in cia_pci_tbi_try2()
324 	mb();  in cia_pci_tbi_try2()
366 	mb();  in verify_tb_operation()
369 	mb();  in verify_tb_operation()
371 	mb();  in verify_tb_operation()
391 	mb();  in verify_tb_operation()
394 	bus_addr = cia_ioremap(addr0, 8*PAGE_SIZE);  in verify_tb_operation()
430 	mb();  in verify_tb_operation()
432 	mb();  in verify_tb_operation()
434 	mb();  in verify_tb_operation()
467 	mb();  in verify_tb_operation()
469 	mb();  in verify_tb_operation()
471 	mb();  in verify_tb_operation()
491 	mb();  in verify_tb_operation()
493 	mb();  in verify_tb_operation()
495 	mb();  in verify_tb_operation()
515 	mb();  in verify_tb_operation()
517 	mb();  in verify_tb_operation()
519 	mb();  in verify_tb_operation()
546 	mb();  in verify_tb_operation()
548 	mb();  in verify_tb_operation()
550 	mb();  in verify_tb_operation()
602 	mb();  in cia_save_srm_settings()
625 	mb();  in cia_restore_srm_settings()
680 	mb();  in do_init_arch()
718 	 * Window 0 is S/G 8MB at 8MB (for isa)  in do_init_arch()
719 	 * Window 1 is S/G 1MB at 768MB (for tbia) (unused for CIA rev 1)  in do_init_arch()
721 	 * Window 3 is DAC access 4GB at 8GB (or S/G for tbia if CIA rev 1)  in do_init_arch()
725 	 * from the 8K alignment one would expect for an 8MB window.   in do_init_arch()
766 		*(vip)CIA_IOC_PCI_W3_BASE = 0x00000000 | 1 | 8;  in do_init_arch()
831 	mb();  in cia_pci_clr_err()
866 		tmp = (cia->pci_err0 >> 8) & 0x1F;  in cia_decode_pci_error()
956 	tmp = (cia->mem_err1 >> 8) & 0xF;  in cia_decode_mem_error()
1011 	case 0x08: set_select = "Set 8 selected"; break;  in cia_decode_mem_error()
1095 	cmd = cmd_desc[(cia->cpu_err1 >> 8) & 0xF];  in cia_decode_parity_error()
1147 	case 8: /* CIA_ERR_RCVD_TAR_ABT */  in cia_decode_mchk()
1205 	mb();  in cia_machine_check()
1206 	mb();  /* magic */  in cia_machine_check()
1210 	mb();  in cia_machine_check()