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.  */
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 /* _UAPI_PARPORT_H_ */
96