1/*
2 * Any part of this program may be used in documents licensed under
3 * the GNU Free Documentation License, Version 1.1 or any later version
4 * published by the Free Software Foundation.
5 */
6
7#ifndef _UAPI_PARPORT_H_
8#define _UAPI_PARPORT_H_
9
10/* Start off with user-visible constants */
11
12/* Maximum of 16 ports per machine */
13#define PARPORT_MAX 16
14
15/* Magic numbers */
16#define PARPORT_IRQ_NONE -1
17#define PARPORT_DMA_NONE -1
18#define PARPORT_IRQ_AUTO -2
19#define PARPORT_DMA_AUTO -2
20#define PARPORT_DMA_NOFIFO -3
21#define PARPORT_DISABLE -2
22#define PARPORT_IRQ_PROBEONLY -3
23#define PARPORT_IOHI_AUTO -1
24
25#define PARPORT_CONTROL_STROBE 0x1
26#define PARPORT_CONTROL_AUTOFD 0x2
27#define PARPORT_CONTROL_INIT 0x4
28#define PARPORT_CONTROL_SELECT 0x8
29
30#define PARPORT_STATUS_ERROR 0x8
31#define PARPORT_STATUS_SELECT 0x10
32#define PARPORT_STATUS_PAPEROUT 0x20
33#define PARPORT_STATUS_ACK 0x40
34#define PARPORT_STATUS_BUSY 0x80
35
36/* Type classes for Plug-and-Play probe. */
37typedef enum {
38 PARPORT_CLASS_LEGACY = 0, /* Non-IEEE1284 device */
39 PARPORT_CLASS_PRINTER,
40 PARPORT_CLASS_MODEM,
41 PARPORT_CLASS_NET,
42 PARPORT_CLASS_HDC, /* Hard disk controller */
43 PARPORT_CLASS_PCMCIA,
44 PARPORT_CLASS_MEDIA, /* Multimedia device */
45 PARPORT_CLASS_FDC, /* Floppy disk controller */
46 PARPORT_CLASS_PORTS,
47 PARPORT_CLASS_SCANNER,
48 PARPORT_CLASS_DIGCAM,
49 PARPORT_CLASS_OTHER, /* Anything else */
50 PARPORT_CLASS_UNSPEC, /* No CLS field in ID */
51 PARPORT_CLASS_SCSIADAPTER
52} parport_device_class;
53
54/* The "modes" entry in parport is a bit field representing the
55 capabilities of the hardware. */
56#define PARPORT_MODE_PCSPP (1<<0) /* IBM PC registers available. */
57#define PARPORT_MODE_TRISTATE (1<<1) /* Can tristate. */
58#define PARPORT_MODE_EPP (1<<2) /* Hardware EPP. */
59#define PARPORT_MODE_ECP (1<<3) /* Hardware ECP. */
60#define PARPORT_MODE_COMPAT (1<<4) /* Hardware 'printer protocol'. */
61#define PARPORT_MODE_DMA (1<<5) /* Hardware can DMA. */
62#define PARPORT_MODE_SAFEININT (1<<6) /* SPP registers accessible in IRQ. */
63
64/* IEEE1284 modes:
65 Nibble mode, byte mode, ECP, ECPRLE and EPP are their own
66 'extensibility request' values. Others are special.
67 'Real' ECP modes must have the IEEE1284_MODE_ECP bit set. */
68#define IEEE1284_MODE_NIBBLE 0
69#define IEEE1284_MODE_BYTE (1<<0)
70#define IEEE1284_MODE_COMPAT (1<<8)
71#define IEEE1284_MODE_BECP (1<<9) /* Bounded ECP mode */
72#define IEEE1284_MODE_ECP (1<<4)
73#define IEEE1284_MODE_ECPRLE (IEEE1284_MODE_ECP | (1<<5))
74#define IEEE1284_MODE_ECPSWE (1<<10) /* Software-emulated */
75#define IEEE1284_MODE_EPP (1<<6)
76#define IEEE1284_MODE_EPPSL (1<<11) /* EPP 1.7 */
77#define IEEE1284_MODE_EPPSWE (1<<12) /* Software-emulated */
78#define IEEE1284_DEVICEID (1<<2) /* This is a flag */
79#define IEEE1284_EXT_LINK (1<<14) /* This flag causes the
80 * extensibility link to
81 * be requested, using
82 * bits 0-6. */
83
84/* For the benefit of parport_read/write, you can use these with
85 * parport_negotiate to use address operations. They have no effect
86 * other than to make parport_read/write use address transfers. */
87#define IEEE1284_ADDR (1<<13) /* This is a flag */
88#define IEEE1284_DATA 0 /* So is this */
89
90/* Flags for block transfer operations. */
91#define PARPORT_EPP_FAST (1<<0) /* Unreliable counts. */
92#define PARPORT_W91284PIC (1<<1) /* have a Warp9 w91284pic in the device */
93
94/* The rest is for the kernel only */
95#endif /* _UAPI_PARPORT_H_ */
96