34  * NOTE: Herein lie back-to-back mb instructions.  They are magic. 
75  *	23:16	bus number (8 bits = 128 possible buses)
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()
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()
363 	mb();  in verify_tb_operation()
366 	mb();  in verify_tb_operation()
368 	mb();  in verify_tb_operation()
388 	mb();  in verify_tb_operation()
427 	mb();  in verify_tb_operation()
429 	mb();  in verify_tb_operation()
431 	mb();  in verify_tb_operation()
464 	mb();  in verify_tb_operation()
466 	mb();  in verify_tb_operation()
468 	mb();  in verify_tb_operation()
488 	mb();  in verify_tb_operation()
490 	mb();  in verify_tb_operation()
492 	mb();  in verify_tb_operation()
512 	mb();  in verify_tb_operation()
514 	mb();  in verify_tb_operation()
516 	mb();  in verify_tb_operation()
543 	mb();  in verify_tb_operation()
545 	mb();  in verify_tb_operation()
547 	mb();  in verify_tb_operation()
599 	mb();  in cia_save_srm_settings()
622 	mb();  in cia_restore_srm_settings()
677 	mb();  in do_init_arch()
715 	 * Window 0 is S/G 8MB at 8MB (for isa)  in do_init_arch()
716 	 * Window 1 is S/G 1MB at 768MB (for tbia) (unused for CIA rev 1)  in do_init_arch()
722 	 * from the 8K alignment one would expect for an 8MB window.   in do_init_arch()
828 	mb();  in cia_pci_clr_err()
836 	static const char * const pci_cmd_desc[16] = {  in cia_decode_pci_error()
883 		static const char * const master_st_desc[16] = {  in cia_decode_pci_error()
892 		static const char * const target_st_desc[16] = {  in cia_decode_pci_error()
906 		master = master_st_desc[(cia->pci_err0 >> 16) & 0xF];  in cia_decode_pci_error()
970 	tmp = (cia->mem_err1 >> 16) & 0xF;  in cia_decode_mem_error()
1077 	static const char * const cmd_desc[16] = {  in cia_decode_parity_error()
1202 	mb();  in cia_machine_check()
1203 	mb();  /* magic */  in cia_machine_check()
1207 	mb();  in cia_machine_check()