1 /* $Id: parport.h,v 1.1 1998/05/17 10:57:52 andrea Exp andrea $ */ 2 3 /* 4 * Any part of this program may be used in documents licensed under 5 * the GNU Free Documentation License, Version 1.1 or any later version 6 * published by the Free Software Foundation. 7 */ 8 9 #ifndef _PARPORT_H_ 10 #define _PARPORT_H_ 11 12 /* Start off with user-visible constants */ 13 14 /* Maximum of 16 ports per machine */ 15 #define PARPORT_MAX 16 16 17 /* Magic numbers */ 18 #define PARPORT_IRQ_NONE -1 19 #define PARPORT_DMA_NONE -1 20 #define PARPORT_IRQ_AUTO -2 21 #define PARPORT_DMA_AUTO -2 22 #define PARPORT_DMA_NOFIFO -3 23 #define PARPORT_DISABLE -2 24 #define PARPORT_IRQ_PROBEONLY -3 25 #define PARPORT_IOHI_AUTO -1 26 27 #define PARPORT_CONTROL_STROBE 0x1 28 #define PARPORT_CONTROL_AUTOFD 0x2 29 #define PARPORT_CONTROL_INIT 0x4 30 #define PARPORT_CONTROL_SELECT 0x8 31 32 #define PARPORT_STATUS_ERROR 0x8 33 #define PARPORT_STATUS_SELECT 0x10 34 #define PARPORT_STATUS_PAPEROUT 0x20 35 #define PARPORT_STATUS_ACK 0x40 36 #define PARPORT_STATUS_BUSY 0x80 37 38 /* Type classes for Plug-and-Play probe. */ 39 typedef enum { 40 PARPORT_CLASS_LEGACY = 0, /* Non-IEEE1284 device */ 41 PARPORT_CLASS_PRINTER, 42 PARPORT_CLASS_MODEM, 43 PARPORT_CLASS_NET, 44 PARPORT_CLASS_HDC, /* Hard disk controller */ 45 PARPORT_CLASS_PCMCIA, 46 PARPORT_CLASS_MEDIA, /* Multimedia device */ 47 PARPORT_CLASS_FDC, /* Floppy disk controller */ 48 PARPORT_CLASS_PORTS, 49 PARPORT_CLASS_SCANNER, 50 PARPORT_CLASS_DIGCAM, 51 PARPORT_CLASS_OTHER, /* Anything else */ 52 PARPORT_CLASS_UNSPEC, /* No CLS field in ID */ 53 PARPORT_CLASS_SCSIADAPTER 54 } parport_device_class; 55 56 /* The "modes" entry in parport is a bit field representing the 57 capabilities of the hardware. */ 58 #define PARPORT_MODE_PCSPP (1<<0) /* IBM PC registers available. */ 59 #define PARPORT_MODE_TRISTATE (1<<1) /* Can tristate. */ 60 #define PARPORT_MODE_EPP (1<<2) /* Hardware EPP. */ 61 #define PARPORT_MODE_ECP (1<<3) /* Hardware ECP. */ 62 #define PARPORT_MODE_COMPAT (1<<4) /* Hardware 'printer protocol'. */ 63 #define PARPORT_MODE_DMA (1<<5) /* Hardware can DMA. */ 64 #define PARPORT_MODE_SAFEININT (1<<6) /* SPP registers accessible in IRQ. */ 65 66 /* IEEE1284 modes: 67 Nibble mode, byte mode, ECP, ECPRLE and EPP are their own 68 'extensibility request' values. Others are special. 69 'Real' ECP modes must have the IEEE1284_MODE_ECP bit set. */ 70 #define IEEE1284_MODE_NIBBLE 0 71 #define IEEE1284_MODE_BYTE (1<<0) 72 #define IEEE1284_MODE_COMPAT (1<<8) 73 #define IEEE1284_MODE_BECP (1<<9) /* Bounded ECP mode */ 74 #define IEEE1284_MODE_ECP (1<<4) 75 #define IEEE1284_MODE_ECPRLE (IEEE1284_MODE_ECP | (1<<5)) 76 #define IEEE1284_MODE_ECPSWE (1<<10) /* Software-emulated */ 77 #define IEEE1284_MODE_EPP (1<<6) 78 #define IEEE1284_MODE_EPPSL (1<<11) /* EPP 1.7 */ 79 #define IEEE1284_MODE_EPPSWE (1<<12) /* Software-emulated */ 80 #define IEEE1284_DEVICEID (1<<2) /* This is a flag */ 81 #define IEEE1284_EXT_LINK (1<<14) /* This flag causes the 82 * extensibility link to 83 * be requested, using 84 * bits 0-6. */ 85 86 /* For the benefit of parport_read/write, you can use these with 87 * parport_negotiate to use address operations. They have no effect 88 * other than to make parport_read/write use address transfers. */ 89 #define IEEE1284_ADDR (1<<13) /* This is a flag */ 90 #define IEEE1284_DATA 0 /* So is this */ 91 92 /* Flags for block transfer operations. */ 93 #define PARPORT_EPP_FAST (1<<0) /* Unreliable counts. */ 94 #define PARPORT_W91284PIC (1<<1) /* have a Warp9 w91284pic in the device */ 95 96 /* The rest is for the kernel only */ 97 #endif /* _PARPORT_H_ */ 98