linux-headers (unknown)
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 _PARPORT_H_
8 #define _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. */
37 typedef 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 #define PARPORT_EPP_FAST_32 PARPORT_EPP_FAST /* 32-bit EPP transfers */
94 #define PARPORT_EPP_FAST_16 (1<<2) /* 16-bit EPP transfers */
95 #define PARPORT_EPP_FAST_8 (1<<3) /* 8-bit EPP transfers */
96
97 /* The rest is for the kernel only */
98 #endif /* _PARPORT_H_ */
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