1 /*- 2 * Copyright (c) 1997, 1998, 1999 Nicolas Souchu 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 * 28 */ 29 #ifndef __PPBCONF_H 30 #define __PPBCONF_H 31 32 #define n(flags) (~(flags) & (flags)) 33 34 /* 35 * Parallel Port Chipset control bits. 36 */ 37 #define STROBE 0x01 38 #define AUTOFEED 0x02 39 #define nINIT 0x04 40 #define SELECTIN 0x08 41 #define IRQENABLE 0x10 42 #define PCD 0x20 43 44 #define nSTROBE n(STROBE) 45 #define nAUTOFEED n(AUTOFEED) 46 #define INIT n(nINIT) 47 #define nSELECTIN n(SELECTIN) 48 #define nPCD n(PCD) 49 50 /* 51 * Parallel Port Chipset status bits. 52 */ 53 #define TIMEOUT 0x01 54 #define nFAULT 0x08 55 #define SELECT 0x10 56 #define PERROR 0x20 57 #define nACK 0x40 58 #define nBUSY 0x80 59 60 #ifdef _KERNEL 61 #include <sys/queue.h> 62 63 /* 64 * Parallel Port Bus sleep/wakeup queue. 65 */ 66 #define PPBPRI (PZERO+8) 67 68 /* 69 * Parallel Port Chipset mode masks. 70 * NIBBLE mode is supposed to be available under each other modes. 71 */ 72 #define PPB_COMPATIBLE 0x0 /* Centronics compatible mode */ 73 74 #define PPB_NIBBLE 0x1 /* reverse 4 bit mode */ 75 #define PPB_PS2 0x2 /* PS/2 byte mode */ 76 #define PPB_EPP 0x4 /* EPP mode, 32 bit */ 77 #define PPB_ECP 0x8 /* ECP mode */ 78 79 /* mode aliases */ 80 #define PPB_SPP PPB_NIBBLE|PPB_PS2 81 #define PPB_BYTE PPB_PS2 82 83 #define PPB_MASK 0x0f 84 #define PPB_OPTIONS_MASK 0xf0 85 86 #define PPB_IS_EPP(mode) (mode & PPB_EPP) 87 #define PPB_IN_EPP_MODE(bus) (PPB_IS_EPP (ppb_get_mode (bus))) 88 #define PPB_IN_NIBBLE_MODE(bus) (ppb_get_mode (bus) & PPB_NIBBLE) 89 #define PPB_IN_PS2_MODE(bus) (ppb_get_mode (bus) & PPB_PS2) 90 91 /* 92 * Structure to store status information. 93 */ 94 struct ppb_status { 95 unsigned char status; 96 97 unsigned int timeout:1; 98 unsigned int error:1; 99 unsigned int select:1; 100 unsigned int paper_end:1; 101 unsigned int ack:1; 102 unsigned int busy:1; 103 }; 104 105 /* Parallel port bus I/O opcodes */ 106 #define PPB_OUTSB_EPP 1 107 #define PPB_OUTSW_EPP 2 108 #define PPB_OUTSL_EPP 3 109 #define PPB_INSB_EPP 4 110 #define PPB_INSW_EPP 5 111 #define PPB_INSL_EPP 6 112 #define PPB_RDTR 7 113 #define PPB_RSTR 8 114 #define PPB_RCTR 9 115 #define PPB_REPP_A 10 116 #define PPB_REPP_D 11 117 #define PPB_RECR 12 118 #define PPB_RFIFO 13 119 #define PPB_WDTR 14 120 #define PPB_WSTR 15 121 #define PPB_WCTR 16 122 #define PPB_WEPP_A 17 123 #define PPB_WEPP_D 18 124 #define PPB_WECR 19 125 #define PPB_WFIFO 20 126 127 /* 128 * How tsleep() is called in ppb_request_bus(). 129 */ 130 #define PPB_DONTWAIT 0 131 #define PPB_NOINTR 0 132 #define PPB_WAIT 0x1 133 #define PPB_INTR 0x2 134 #define PPB_POLL 0x4 135 #define PPB_FOREVER -1 136 137 /* 138 * Microsequence stuff. 139 */ 140 #define PPB_MS_MAXLEN 64 /* XXX according to MS_INS_MASK */ 141 #define PPB_MS_MAXARGS 3 /* according to MS_ARG_MASK */ 142 143 /* maximum number of mode dependent 144 * submicrosequences for in/out operations 145 */ 146 #define PPB_MAX_XFER 6 147 148 union ppb_insarg { 149 int i; 150 void *p; 151 char *c; 152 int (* f)(void *, char *); 153 }; 154 155 struct ppb_microseq { 156 int opcode; /* microins. opcode */ 157 union ppb_insarg arg[PPB_MS_MAXARGS]; /* arguments */ 158 }; 159 160 /* microseqences used for GET/PUT operations */ 161 struct ppb_xfer { 162 struct ppb_microseq *loop; /* the loop microsequence */ 163 }; 164 165 /* 166 * Parallel Port Bus Device structure. 167 */ 168 struct ppb_data; /* see below */ 169 170 struct ppb_context { 171 int valid; /* 1 if the struct is valid */ 172 int mode; /* XXX chipset operating mode */ 173 174 struct microseq *curpc; /* pc in curmsq */ 175 struct microseq *curmsq; /* currently executed microseqence */ 176 }; 177 178 /* 179 * List of IVARS available to ppb device drivers 180 */ 181 #define PPBUS_IVAR_MODE 0 182 183 /* other fields are reserved to the ppbus internals */ 184 185 struct ppb_device { 186 187 const char *name; /* name of the device */ 188 189 u_int flags; /* flags */ 190 191 struct ppb_context ctx; /* context of the device */ 192 193 /* mode dependent get msq. If NULL, 194 * IEEE1284 code is used */ 195 struct ppb_xfer 196 get_xfer[PPB_MAX_XFER]; 197 198 /* mode dependent put msq. If NULL, 199 * IEEE1284 code is used */ 200 struct ppb_xfer 201 put_xfer[PPB_MAX_XFER]; 202 203 driver_intr_t *intr_hook; 204 void *intr_arg; 205 }; 206 207 /* EPP standards */ 208 #define EPP_1_9 0x0 /* default */ 209 #define EPP_1_7 0x1 210 211 /* Parallel Port Chipset IVARS */ /* elsewhere XXX */ 212 #define PPC_IVAR_EPP_PROTO 0 213 #define PPC_IVAR_LOCK 1 214 #define PPC_IVAR_INTR_HANDLER 2 215 216 /* 217 * Maximum size of the PnP info string 218 */ 219 #define PPB_PnP_STRING_SIZE 256 /* XXX */ 220 221 /* 222 * Parallel Port Bus structure. 223 */ 224 struct ppb_data { 225 226 #define PPB_PnP_PRINTER 0 227 #define PPB_PnP_MODEM 1 228 #define PPB_PnP_NET 2 229 #define PPB_PnP_HDC 3 230 #define PPB_PnP_PCMCIA 4 231 #define PPB_PnP_MEDIA 5 232 #define PPB_PnP_FDC 6 233 #define PPB_PnP_PORTS 7 234 #define PPB_PnP_SCANNER 8 235 #define PPB_PnP_DIGICAM 9 236 #define PPB_PnP_UNKNOWN 10 237 int class_id; /* not a PnP device if class_id < 0 */ 238 239 int state; /* current IEEE1284 state */ 240 int error; /* last IEEE1284 error */ 241 242 int mode; /* IEEE 1284-1994 mode 243 * NIBBLE, PS2, EPP or ECP */ 244 245 device_t ppb_owner; /* device which owns the bus */ 246 247 struct mtx *ppc_lock; /* lock of parent device */ 248 struct resource *ppc_irq_res; 249 }; 250 251 struct callout; 252 253 typedef int (*ppc_intr_handler)(void *); 254 255 extern int ppb_attach_device(device_t); 256 extern int ppb_request_bus(device_t, device_t, int); 257 extern int ppb_release_bus(device_t, device_t); 258 259 /* bus related functions */ 260 extern void ppb_lock(device_t); 261 extern void ppb_unlock(device_t); 262 extern void _ppb_assert_locked(device_t, const char *, int); 263 extern void ppb_init_callout(device_t, struct callout *, int); 264 extern int ppb_sleep(device_t, void *, int, const char *, int); 265 extern int ppb_get_status(device_t, struct ppb_status *); 266 extern int ppb_poll_bus(device_t, int, uint8_t, uint8_t, int); 267 extern int ppb_reset_epp_timeout(device_t); 268 extern int ppb_ecp_sync(device_t); 269 extern int ppb_get_epp_protocol(device_t); 270 extern int ppb_set_mode(device_t, int); /* returns old mode */ 271 extern int ppb_get_mode(device_t); /* returns current mode */ 272 extern int ppb_write(device_t, char *, int, int); 273 274 #ifdef INVARIANTS 275 #define ppb_assert_locked(dev) _ppb_assert_locked(dev, __FILE__, __LINE__) 276 #else 277 #define ppb_assert_locked(dev) 278 #endif 279 #endif /* _KERNEL */ 280 281 #endif /* !__PPBCONF_H */ 282