projects/linux·blob v2.6.39 · refs

22 lines · 893 B

1/* Miscellaneous definitions for VIA chipsets
2 Currently used only by drivers/parport/parport_pc.c */
3
4/* Values for SuperIO function select configuration register */
5#define VIA_FUNCTION_PARPORT_SPP 0x00
6#define VIA_FUNCTION_PARPORT_ECP 0x01
7#define VIA_FUNCTION_PARPORT_EPP 0x02
8#define VIA_FUNCTION_PARPORT_DISABLE 0x03
9#define VIA_FUNCTION_PROBE 0xFF /* Special magic value to be used in code, not to be written into chip */
10
11/* Bits for parallel port mode configuration register */
12#define VIA_PARPORT_ECPEPP 0X20
13#define VIA_PARPORT_BIDIR 0x80
14
15/* VIA configuration registers */
16#define VIA_CONFIG_INDEX 0x3F0
17#define VIA_CONFIG_DATA 0x3F1
18
19/* Mask for parallel port IRQ bits (in ISA PnP IRQ routing register 1) */
20#define VIA_IRQCONTROL_PARALLEL 0xF0
21/* Mask for parallel port DMA bits (in ISA PnP DMA routing register) */
22#define VIA_DMACONTROL_PARALLEL 0x0C