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96 lines
3.6 KiB
C
96 lines
3.6 KiB
C
4 years ago
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/*
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* Any part of this program may be used in documents licensed under
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* the GNU Free Documentation License, Version 1.1 or any later version
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* published by the Free Software Foundation.
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*/
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#ifndef _PARPORT_H_
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#define _PARPORT_H_
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/* Start off with user-visible constants */
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/* Maximum of 16 ports per machine */
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#define PARPORT_MAX 16
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/* Magic numbers */
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#define PARPORT_IRQ_NONE -1
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#define PARPORT_DMA_NONE -1
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#define PARPORT_IRQ_AUTO -2
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#define PARPORT_DMA_AUTO -2
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#define PARPORT_DMA_NOFIFO -3
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#define PARPORT_DISABLE -2
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#define PARPORT_IRQ_PROBEONLY -3
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#define PARPORT_IOHI_AUTO -1
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#define PARPORT_CONTROL_STROBE 0x1
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#define PARPORT_CONTROL_AUTOFD 0x2
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#define PARPORT_CONTROL_INIT 0x4
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#define PARPORT_CONTROL_SELECT 0x8
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#define PARPORT_STATUS_ERROR 0x8
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#define PARPORT_STATUS_SELECT 0x10
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#define PARPORT_STATUS_PAPEROUT 0x20
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#define PARPORT_STATUS_ACK 0x40
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#define PARPORT_STATUS_BUSY 0x80
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/* Type classes for Plug-and-Play probe. */
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typedef enum {
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PARPORT_CLASS_LEGACY = 0, /* Non-IEEE1284 device */
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PARPORT_CLASS_PRINTER,
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PARPORT_CLASS_MODEM,
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PARPORT_CLASS_NET,
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PARPORT_CLASS_HDC, /* Hard disk controller */
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PARPORT_CLASS_PCMCIA,
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PARPORT_CLASS_MEDIA, /* Multimedia device */
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PARPORT_CLASS_FDC, /* Floppy disk controller */
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PARPORT_CLASS_PORTS,
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PARPORT_CLASS_SCANNER,
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PARPORT_CLASS_DIGCAM,
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PARPORT_CLASS_OTHER, /* Anything else */
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PARPORT_CLASS_UNSPEC, /* No CLS field in ID */
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PARPORT_CLASS_SCSIADAPTER
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} parport_device_class;
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/* The "modes" entry in parport is a bit field representing the
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capabilities of the hardware. */
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#define PARPORT_MODE_PCSPP (1<<0) /* IBM PC registers available. */
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#define PARPORT_MODE_TRISTATE (1<<1) /* Can tristate. */
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#define PARPORT_MODE_EPP (1<<2) /* Hardware EPP. */
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#define PARPORT_MODE_ECP (1<<3) /* Hardware ECP. */
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#define PARPORT_MODE_COMPAT (1<<4) /* Hardware 'printer protocol'. */
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#define PARPORT_MODE_DMA (1<<5) /* Hardware can DMA. */
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#define PARPORT_MODE_SAFEININT (1<<6) /* SPP registers accessible in IRQ. */
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/* IEEE1284 modes:
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Nibble mode, byte mode, ECP, ECPRLE and EPP are their own
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'extensibility request' values. Others are special.
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'Real' ECP modes must have the IEEE1284_MODE_ECP bit set. */
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#define IEEE1284_MODE_NIBBLE 0
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#define IEEE1284_MODE_BYTE (1<<0)
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#define IEEE1284_MODE_COMPAT (1<<8)
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#define IEEE1284_MODE_BECP (1<<9) /* Bounded ECP mode */
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#define IEEE1284_MODE_ECP (1<<4)
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#define IEEE1284_MODE_ECPRLE (IEEE1284_MODE_ECP | (1<<5))
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#define IEEE1284_MODE_ECPSWE (1<<10) /* Software-emulated */
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#define IEEE1284_MODE_EPP (1<<6)
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#define IEEE1284_MODE_EPPSL (1<<11) /* EPP 1.7 */
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#define IEEE1284_MODE_EPPSWE (1<<12) /* Software-emulated */
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#define IEEE1284_DEVICEID (1<<2) /* This is a flag */
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#define IEEE1284_EXT_LINK (1<<14) /* This flag causes the
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* extensibility link to
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* be requested, using
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* bits 0-6. */
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/* For the benefit of parport_read/write, you can use these with
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* parport_negotiate to use address operations. They have no effect
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* other than to make parport_read/write use address transfers. */
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#define IEEE1284_ADDR (1<<13) /* This is a flag */
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#define IEEE1284_DATA 0 /* So is this */
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/* Flags for block transfer operations. */
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#define PARPORT_EPP_FAST (1<<0) /* Unreliable counts. */
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#define PARPORT_W91284PIC (1<<1) /* have a Warp9 w91284pic in the device */
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/* The rest is for the kernel only */
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#endif /* _PARPORT_H_ */
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