1 /* $Id: parport.h,v 1.1 1998/05/17 10:57:52 andrea Exp andrea $ */
4 * Any part of this program may be used in documents licensed under
5 * the GNU Free Documentation License, Version 1.1 or any later version
6 * published by the Free Software Foundation.
12 /* Start off with user-visible constants */
14 /* Maximum of 16 ports per machine */
15 #define PARPORT_MAX 16
18 #define PARPORT_IRQ_NONE -1
19 #define PARPORT_DMA_NONE -1
20 #define PARPORT_IRQ_AUTO -2
21 #define PARPORT_DMA_AUTO -2
22 #define PARPORT_DMA_NOFIFO -3
23 #define PARPORT_DISABLE -2
24 #define PARPORT_IRQ_PROBEONLY -3
25 #define PARPORT_IOHI_AUTO -1
27 #define PARPORT_CONTROL_STROBE 0x1
28 #define PARPORT_CONTROL_AUTOFD 0x2
29 #define PARPORT_CONTROL_INIT 0x4
30 #define PARPORT_CONTROL_SELECT 0x8
32 #define PARPORT_STATUS_ERROR 0x8
33 #define PARPORT_STATUS_SELECT 0x10
34 #define PARPORT_STATUS_PAPEROUT 0x20
35 #define PARPORT_STATUS_ACK 0x40
36 #define PARPORT_STATUS_BUSY 0x80
38 /* Type classes for Plug-and-Play probe. */
40 PARPORT_CLASS_LEGACY = 0, /* Non-IEEE1284 device */
41 PARPORT_CLASS_PRINTER,
44 PARPORT_CLASS_HDC, /* Hard disk controller */
46 PARPORT_CLASS_MEDIA, /* Multimedia device */
47 PARPORT_CLASS_FDC, /* Floppy disk controller */
49 PARPORT_CLASS_SCANNER,
51 PARPORT_CLASS_OTHER, /* Anything else */
52 PARPORT_CLASS_UNSPEC, /* No CLS field in ID */
53 PARPORT_CLASS_SCSIADAPTER
54 } parport_device_class;
56 /* The "modes" entry in parport is a bit field representing the
57 capabilities of the hardware. */
58 #define PARPORT_MODE_PCSPP (1<<0) /* IBM PC registers available. */
59 #define PARPORT_MODE_TRISTATE (1<<1) /* Can tristate. */
60 #define PARPORT_MODE_EPP (1<<2) /* Hardware EPP. */
61 #define PARPORT_MODE_ECP (1<<3) /* Hardware ECP. */
62 #define PARPORT_MODE_COMPAT (1<<4) /* Hardware 'printer protocol'. */
63 #define PARPORT_MODE_DMA (1<<5) /* Hardware can DMA. */
64 #define PARPORT_MODE_SAFEININT (1<<6) /* SPP registers accessible in IRQ. */
67 Nibble mode, byte mode, ECP, ECPRLE and EPP are their own
68 'extensibility request' values. Others are special.
69 'Real' ECP modes must have the IEEE1284_MODE_ECP bit set. */
70 #define IEEE1284_MODE_NIBBLE 0
71 #define IEEE1284_MODE_BYTE (1<<0)
72 #define IEEE1284_MODE_COMPAT (1<<8)
73 #define IEEE1284_MODE_BECP (1<<9) /* Bounded ECP mode */
74 #define IEEE1284_MODE_ECP (1<<4)
75 #define IEEE1284_MODE_ECPRLE (IEEE1284_MODE_ECP | (1<<5))
76 #define IEEE1284_MODE_ECPSWE (1<<10) /* Software-emulated */
77 #define IEEE1284_MODE_EPP (1<<6)
78 #define IEEE1284_MODE_EPPSL (1<<11) /* EPP 1.7 */
79 #define IEEE1284_MODE_EPPSWE (1<<12) /* Software-emulated */
80 #define IEEE1284_DEVICEID (1<<2) /* This is a flag */
81 #define IEEE1284_EXT_LINK (1<<14) /* This flag causes the
82 * extensibility link to
86 /* For the benefit of parport_read/write, you can use these with
87 * parport_negotiate to use address operations. They have no effect
88 * other than to make parport_read/write use address transfers. */
89 #define IEEE1284_ADDR (1<<13) /* This is a flag */
90 #define IEEE1284_DATA 0 /* So is this */
92 /* Flags for block transfer operations. */
93 #define PARPORT_EPP_FAST (1<<0) /* Unreliable counts. */
94 #define PARPORT_W91284PIC (1<<1) /* have a Warp9 w91284pic in the device */
96 /* The rest is for the kernel only */
97 #endif /* _PARPORT_H_ */