27  * NOTE: Herein lie back-to-back mb instructions.  They are magic. 
53  *  3 3|3 3 2 2|2 2 2 2|2 2 2 2|1 1 1 1|1 1 1 1|1 1 
54  *  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  * Type 1:
65  *  3 3|3 3 2 2|2 2 2 2|2 2 2 2|1 1 1 1|1 1 1 1|1 1 
66  *  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
68  * | | | | | | | | | | |B|B|B|B|B|B|B|B|D|D|D|D|D|F|F|F|R|R|R|R|R|R|0|1|
104 	mb();  in conf_read()
108 	mb();  in conf_read()
110 	mcheck_expected(cpu) = 1;  in conf_read()
113 	mb();  in conf_read()
117 	mb();  in conf_read()
118 	mb();  /* magic */  in conf_read()
123 		mb();  in conf_read()
126 	mb();  in conf_read()
148 	*(vuip)MCPCIA_CAP_ERR(mid) = stat0; mb();  in conf_write()
153 	mcheck_expected(cpu) = 1;  in conf_write()
155 	mb();  in conf_write()
159 	mb();  in conf_write()
160 	mb();  /* magic */  in conf_write()
163 	mb();  in conf_write()
181 	/* Type 1 configuration cycle for *ALL* busses.  */  in mk_conf_addr()
182 	*type1 = 1;  in mk_conf_addr()
206 	addr |= (size - 1) * 8;  in mcpcia_read_config()
209 	case 1:  in mcpcia_read_config()
233 	addr |= (size - 1) * 8;  in mcpcia_write_config()
250 	mb();  in mcpcia_pci_tbi()
262 	mb();  in mcpcia_probe_hose()
263 	mb();  in mcpcia_probe_hose()
270 	mb();  in mcpcia_probe_hose()
275 	mb();  in mcpcia_probe_hose()
276 	mb();  /* magic */  in mcpcia_probe_hose()
280 		mb();  in mcpcia_probe_hose()
283 	mb();  in mcpcia_probe_hose()
339 	mb();  in mcpcia_pci_clr_err()
357 	mb();  in mcpcia_startup_hose()
363 	 * Window 0 is scatter-gather 8MB at 8MB (for isa)  in mcpcia_startup_hose()
364 	 * Window 1 is scatter-gather (up to) 1GB at 1GB (for pci)  in mcpcia_startup_hose()
377 	*(vuip)MCPCIA_W0_MASK(mid) = (hose->sg_isa->size - 1) & 0xfff00000;  in mcpcia_startup_hose()
381 	*(vuip)MCPCIA_W1_MASK(mid) = (hose->sg_pci->size - 1) & 0xfff00000;  in mcpcia_startup_hose()
384 	*(vuip)MCPCIA_W2_BASE(mid) = __direct_map_base | 1;  in mcpcia_startup_hose()
385 	*(vuip)MCPCIA_W2_MASK(mid) = (__direct_map_size - 1) & 0xfff00000;  in mcpcia_startup_hose()
390 	mcpcia_pci_tbi(hose, 0, -1);  in mcpcia_startup_hose()
393 	mb();  in mcpcia_startup_hose()
396 	mb();  in mcpcia_startup_hose()
399 	mb();  in mcpcia_startup_hose()
455 		       i, i+1, frame->paltemp[i], frame->paltemp[i+1]);  in mcpcia_print_uncorrectable()
459 		       i, i+1, frame->shadow[i],   in mcpcia_print_uncorrectable()
460 		       frame->shadow[i+1]);  in mcpcia_print_uncorrectable()
483 			printk("    Data error in bank 1\n");  in mcpcia_print_uncorrectable()
489 			printk("    Tag error in bank 1\n");  in mcpcia_print_uncorrectable()
585 	mb();  in mcpcia_machine_check()
586 	mb();  /* magic */  in mcpcia_machine_check()
599 	case 1:  in mcpcia_machine_check()
609 	mb();  in mcpcia_machine_check()