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01: /*
02:  * Any part of this program may be used in documents licensed under
03:  * the GNU Free Documentation License, Version 1.1 or any later version
04:  * published by the Free Software Foundation.
05:  */
06: 
07: #ifndef _PARPORT_H_
08: #define _PARPORT_H_
09: 
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: 
94: /* The rest is for the kernel only */
95: #endif /* _PARPORT_H_ */
96: 

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