1 #ifndef _SPARC64_BPP_H 2 #define _SPARC64_BPP_H 3 4 /* 5 * Copyright (c) 1995 Picture Elements 6 * Stephen Williams 7 * Gus Baldauf 8 * 9 * Linux/SPARC port by Peter Zaitcev. 10 * Integration into SPARC tree by Tom Dyas. 11 */ 12 13 #include <linux/ioctl.h> 14 15 /* 16 * This is a driver that supports IEEE Std 1284-1994 communications 17 * with compliant or compatible devices. It will use whatever features 18 * the device supports, prefering those that are typically faster. 19 * 20 * When the device is opened, it is left in COMPATABILITY mode, and 21 * writes work like any printer device. The driver only attempt to 22 * negotiate 1284 modes when needed so that plugs can be pulled, 23 * switch boxes switched, etc., without disrupting things. It will 24 * also leave the device in compatibility mode when closed. 25 */ 26 27 28 29 /* 30 * This driver also supplies ioctls to manually manipulate the 31 * pins. This is great for testing devices, or writing code to deal 32 * with bizzarro-mode of the ACME Special TurboThingy Plus. 33 * 34 * NOTE: These ioctl currently do not interact well with 35 * read/write. Caveat emptor. 36 * 37 * PUT_PINS allows us to assign the sense of all the pins, including 38 * the data pins if being driven by the host. The GET_PINS returns the 39 * pins that the peripheral drives, including data if appropriate. 40 */ 41 42 # define BPP_PUT_PINS _IOW('B', 1, int) 43 # define BPP_GET_PINS _IOR('B', 2, void) 44 # define BPP_PUT_DATA _IOW('B', 3, int) 45 # define BPP_GET_DATA _IOR('B', 4, void) 46 47 /* 48 * Set the data bus to input mode. Disengage the data bin driver and 49 * be prepared to read values from the peripheral. If the arg is 0, 50 * then revert the bus to output mode. 51 */ 52 # define BPP_SET_INPUT _IOW('B', 5, int) 53 54 /* 55 * These bits apply to the PUT operation... 56 */ 57 # define BPP_PP_nStrobe 0x0001 58 # define BPP_PP_nAutoFd 0x0002 59 # define BPP_PP_nInit 0x0004 60 # define BPP_PP_nSelectIn 0x0008 61 62 /* 63 * These apply to the GET operation, which also reads the current value 64 * of the previously put values. A bit mask of these will be returned 65 * as a bit mask in the return code of the ioctl(). 66 */ 67 # define BPP_GP_nAck 0x0100 68 # define BPP_GP_Busy 0x0200 69 # define BPP_GP_PError 0x0400 70 # define BPP_GP_Select 0x0800 71 # define BPP_GP_nFault 0x1000 72 73 #endif 74