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parport.h
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/* * Any part of this program may be used in documents licensed under * the GNU Free Documentation License, Version 1.1 or any later version * published by the Free Software Foundation. */ #ifndef _PARPORT_H_ #define _PARPORT_H_ /* Start off with user-visible constants */ /* Maximum of 16 ports per machine */ #define PARPORT_MAX 16 /* Magic numbers */ #define PARPORT_IRQ_NONE -1 #define PARPORT_DMA_NONE -1 #define PARPORT_IRQ_AUTO -2 #define PARPORT_DMA_AUTO -2 #define PARPORT_DMA_NOFIFO -3 #define PARPORT_DISABLE -2 #define PARPORT_IRQ_PROBEONLY -3 #define PARPORT_IOHI_AUTO -1 #define PARPORT_CONTROL_STROBE 0x1 #define PARPORT_CONTROL_AUTOFD 0x2 #define PARPORT_CONTROL_INIT 0x4 #define PARPORT_CONTROL_SELECT 0x8 #define PARPORT_STATUS_ERROR 0x8 #define PARPORT_STATUS_SELECT 0x10 #define PARPORT_STATUS_PAPEROUT 0x20 #define PARPORT_STATUS_ACK 0x40 #define PARPORT_STATUS_BUSY 0x80 /* Type classes for Plug-and-Play probe. */ typedef enum { PARPORT_CLASS_LEGACY = 0, /* Non-IEEE1284 device */ PARPORT_CLASS_PRINTER, PARPORT_CLASS_MODEM, PARPORT_CLASS_NET, PARPORT_CLASS_HDC, /* Hard disk controller */ PARPORT_CLASS_PCMCIA, PARPORT_CLASS_MEDIA, /* Multimedia device */ PARPORT_CLASS_FDC, /* Floppy disk controller */ PARPORT_CLASS_PORTS, PARPORT_CLASS_SCANNER, PARPORT_CLASS_DIGCAM, PARPORT_CLASS_OTHER, /* Anything else */ PARPORT_CLASS_UNSPEC, /* No CLS field in ID */ PARPORT_CLASS_SCSIADAPTER } parport_device_class; /* The "modes" entry in parport is a bit field representing the capabilities of the hardware. */ #define PARPORT_MODE_PCSPP (1<<0) /* IBM PC registers available. */ #define PARPORT_MODE_TRISTATE (1<<1) /* Can tristate. */ #define PARPORT_MODE_EPP (1<<2) /* Hardware EPP. */ #define PARPORT_MODE_ECP (1<<3) /* Hardware ECP. */ #define PARPORT_MODE_COMPAT (1<<4) /* Hardware 'printer protocol'. */ #define PARPORT_MODE_DMA (1<<5) /* Hardware can DMA. */ #define PARPORT_MODE_SAFEININT (1<<6) /* SPP registers accessible in IRQ. */ /* IEEE1284 modes: Nibble mode, byte mode, ECP, ECPRLE and EPP are their own 'extensibility request' values. Others are special. 'Real' ECP modes must have the IEEE1284_MODE_ECP bit set. */ #define IEEE1284_MODE_NIBBLE 0 #define IEEE1284_MODE_BYTE (1<<0) #define IEEE1284_MODE_COMPAT (1<<8) #define IEEE1284_MODE_BECP (1<<9) /* Bounded ECP mode */ #define IEEE1284_MODE_ECP (1<<4) #define IEEE1284_MODE_ECPRLE (IEEE1284_MODE_ECP | (1<<5)) #define IEEE1284_MODE_ECPSWE (1<<10) /* Software-emulated */ #define IEEE1284_MODE_EPP (1<<6) #define IEEE1284_MODE_EPPSL (1<<11) /* EPP 1.7 */ #define IEEE1284_MODE_EPPSWE (1<<12) /* Software-emulated */ #define IEEE1284_DEVICEID (1<<2) /* This is a flag */ #define IEEE1284_EXT_LINK (1<<14) /* This flag causes the * extensibility link to * be requested, using * bits 0-6. */ /* For the benefit of parport_read/write, you can use these with * parport_negotiate to use address operations. They have no effect * other than to make parport_read/write use address transfers. */ #define IEEE1284_ADDR (1<<13) /* This is a flag */ #define IEEE1284_DATA 0 /* So is this */ /* Flags for block transfer operations. */ #define PARPORT_EPP_FAST (1<<0) /* Unreliable counts. */ #define PARPORT_W91284PIC (1<<1) /* have a Warp9 w91284pic in the device */ #define PARPORT_EPP_FAST_32 PARPORT_EPP_FAST /* 32-bit EPP transfers */ #define PARPORT_EPP_FAST_16 (1<<2) /* 16-bit EPP transfers */ #define PARPORT_EPP_FAST_8 (1<<3) /* 8-bit EPP transfers */ /* The rest is for the kernel only */ #endif /* _PARPORT_H_ */