42 /* for snoop control */
83 /* Defines for Intel SCH HDA snoop control */
203 module_param_named(snoop, hda_snoop, bint, 0444);
204 MODULE_PARM_DESC(snoop, "Enable/disable snooping");
303 /* quirks for ATI HDMI with snoop off */
397 	 * we need to enable snoop.  in azx_init_pci()
400 		dev_dbg(chip->card->dev, "Setting ATI snoop: %d\n",  in azx_init_pci()
407 	/* For NVIDIA HDA, enable snoop */  in azx_init_pci()
409 		dev_dbg(chip->card->dev, "Setting Nvidia snoop: %d\n",  in azx_init_pci()
422 	/* Enable SCH/PCH snoop if needed */  in azx_init_pci()
424 		unsigned short snoop;  in azx_init_pci()  local
425 		pci_read_config_word(chip->pci, INTEL_SCH_HDA_DEVC, &snoop);  in azx_init_pci()
426 		if ((!azx_snoop(chip) && !(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP)) ||  in azx_init_pci()
427 		    (azx_snoop(chip) && (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP))) {  in azx_init_pci()
428 			snoop &= ~INTEL_SCH_HDA_DEVC_NOSNOOP;  in azx_init_pci()
430 				snoop |= INTEL_SCH_HDA_DEVC_NOSNOOP;  in azx_init_pci()
431 			pci_write_config_word(chip->pci, INTEL_SCH_HDA_DEVC, snoop);  in azx_init_pci()
433 				INTEL_SCH_HDA_DEVC, &snoop);  in azx_init_pci()
435 		dev_dbg(chip->card->dev, "SCH snoop: %s\n",  in azx_init_pci()
436 			(snoop & INTEL_SCH_HDA_DEVC_NOSNOOP) ?  in azx_init_pci()
1687 /* check the snoop mode availability */
1690 	int snoop = hda_snoop;  in azx_check_snoop_available()  local
1692 	if (snoop >= 0) {  in azx_check_snoop_available()
1694 			 snoop ? "snoop" : "non-snoop");  in azx_check_snoop_available()
1695 		chip->snoop = snoop;  in azx_check_snoop_available()
1696 		chip->uc_buffer = !snoop;  in azx_check_snoop_available()
1700 	snoop = true;  in azx_check_snoop_available()
1703 		/* force to non-snoop mode for a new VIA controller  in azx_check_snoop_available()
1710 			snoop = false;  in azx_check_snoop_available()
1714 		snoop = false;  in azx_check_snoop_available()
1716 	chip->snoop = snoop;  in azx_check_snoop_available()
1717 	if (!snoop) {  in azx_check_snoop_available()
1718 		dev_info(chip->card->dev, "Force to non-snoop mode\n");  in azx_check_snoop_available()
1815 	/* use the non-cached pages in non-snoop mode */  in azx_create()