xref: /openbmc/linux/include/uapi/linux/parport.h (revision 05f0adef)
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 #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 /* _UAPI_PARPORT_H_ */
99