18    SMBus interfaces.
38 /* PIIX4 SMBus address offsets */
177 	/* On some motherboards, it was reported that accessing the SMBus  in piix4_setup()
181 			"Accessing the SMBus on this system is unsafe!\n");  in piix4_setup()
185 	/* Don't access SMBus on IBM systems which get corrupted eeproms */  in piix4_setup()
194 	/* Determine the address of the SMBus areas */  in piix4_setup()
202 			dev_err(&PIIX4_dev->dev, "SMBus base address "  in piix4_setup()
213 		dev_err(&PIIX4_dev->dev, "SMBus region 0x%x already in use!\n",  in piix4_setup()
226 		dev_info(&PIIX4_dev->dev, "WARNING: SMBus interface set to "  in piix4_setup()
231 			 * noted that many Dell machines have the SMBus  in piix4_setup()
241 				   "WARNING: SMBus interface has been FORCEFULLY ENABLED!\n");  in piix4_setup()
244 				"SMBus Host Controller not enabled!\n");  in piix4_setup()
251 		dev_dbg(&PIIX4_dev->dev, "Using IRQ for SMBus\n");  in piix4_setup()
253 		dev_dbg(&PIIX4_dev->dev, "Using SMI# for SMBus\n");  in piix4_setup()
260 		 "SMBus Host Controller at 0x%x, revision %d\n",  in piix4_setup()
273 	/* SB800 and later SMBus does not support forcing address */  in piix4_setup_sb800()
275 		dev_err(&PIIX4_dev->dev, "SMBus does not support "  in piix4_setup_sb800()
280 	/* Determine the address of the SMBus areas */  in piix4_setup_sb800()
319 			"SMBus Host Controller not enabled!\n");  in piix4_setup_sb800()
327 		dev_err(&PIIX4_dev->dev, "SMBus region 0x%x already in use!\n",  in piix4_setup_sb800()
332 	/* Aux SMBus does not support IRQ information */  in piix4_setup_sb800()
335 			 "Auxiliary SMBus Host Controller at 0x%x\n",  in piix4_setup_sb800()
340 	/* Request the SMBus I2C bus config region */  in piix4_setup_sb800()
342 		dev_err(&PIIX4_dev->dev, "SMBus I2C bus config region "  in piix4_setup_sb800()
351 		dev_dbg(&PIIX4_dev->dev, "Using IRQ for SMBus\n");  in piix4_setup_sb800()
353 		dev_dbg(&PIIX4_dev->dev, "Using SMI# for SMBus\n");  in piix4_setup_sb800()
356 		 "SMBus Host Controller at 0x%x, revision %d\n",  in piix4_setup_sb800()
391 		 "Using register 0x%02x for SMBus port selection\n",  in piix4_setup_sb800()
401 	/* Set up auxiliary SMBus controllers found on some  in piix4_setup_aux()
406 	/* Read address of auxiliary SMBus controller */  in piix4_setup_aux()
410 			"Auxiliary SMBus controller not enabled\n");  in piix4_setup_aux()
417 			"Auxiliary SMBus base address uninitialized\n");  in piix4_setup_aux()
425 		dev_err(&PIIX4_dev->dev, "Auxiliary SMBus region 0x%x "  in piix4_setup_aux()
431 		 "Auxiliary SMBus Host Controller at 0x%x\n",  in piix4_setup_aux()
450 	/* Make sure the SMBus host is ready to start transmitting */  in piix4_transaction()
452 		dev_dbg(&piix4_adapter->dev, "SMBus busy (%02x). "  in piix4_transaction()
476 	/* If the SMBus is still busy, we give up */  in piix4_transaction()
478 		dev_err(&piix4_adapter->dev, "SMBus Timeout!\n");  in piix4_transaction()
489 		dev_dbg(&piix4_adapter->dev, "Bus collision! SMBus may be "  in piix4_transaction()
666  * Handles access to multiple SMBus ports on the SB800.
688 	/* Request the SMBUS semaphore, avoid conflicts with the IMC */  in piix4_access_sb800()
700 	/* SMBus is still owned by the IMC, we give up */  in piix4_access_sb800()
710 	 * All this is done through SMBus and can/will collide  in piix4_access_sb800()
854 		"SMBus PIIX4 adapter%s at %04x", name, smba);  in piix4_add_adapter()
948 		 * Try to register multiplexed main SMBus adapter,  in piix4_probe()
959 		/* Try to register main SMBus adapter, give up if we can't */  in piix4_probe()
967 	/* Check for auxiliary SMBus on some AMD chipsets */  in piix4_probe()
1038 MODULE_DESCRIPTION("PIIX4 SMBus driver");