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/* SPDX-License-Identifier: GPL-2.0 */ /* Miscellaneous definitions for VIA chipsets Currently used only by drivers/parport/parport_pc.c */ /* Values for SuperIO function select configuration register */ #define VIA_FUNCTION_PARPORT_SPP 0x00 #define VIA_FUNCTION_PARPORT_ECP 0x01 #define VIA_FUNCTION_PARPORT_EPP 0x02 #define VIA_FUNCTION_PARPORT_DISABLE 0x03 #define VIA_FUNCTION_PROBE 0xFF /* Special magic value to be used in code, not to be written into chip */ /* Bits for parallel port mode configuration register */ #define VIA_PARPORT_ECPEPP 0X20 #define VIA_PARPORT_BIDIR 0x80 /* VIA configuration registers */ #define VIA_CONFIG_INDEX 0x3F0 #define VIA_CONFIG_DATA 0x3F1 /* Mask for parallel port IRQ bits (in ISA PnP IRQ routing register 1) */ #define VIA_IRQCONTROL_PARALLEL 0xF0 /* Mask for parallel port DMA bits (in ISA PnP DMA routing register) */ #define VIA_DMACONTROL_PARALLEL 0x0C