| 1 | /* |
| 2 | * Copyright (c) 1990 The Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This code is derived from software contributed to Berkeley by |
| 6 | * Don Ahn. |
| 7 | * |
| 8 | * Libretto PCMCIA floppy support by David Horwitt (dhorwitt@ucsd.edu) |
| 9 | * aided by the Linux floppy driver modifications from David Bateman |
| 10 | * (dbateman@eng.uts.edu.au). |
| 11 | * |
| 12 | * Copyright (c) 1993, 1994 by |
| 13 | * jc@irbs.UUCP (John Capo) |
| 14 | * vak@zebub.msk.su (Serge Vakulenko) |
| 15 | * ache@astral.msk.su (Andrew A. Chernov) |
| 16 | * |
| 17 | * Copyright (c) 1993, 1994, 1995 by |
| 18 | * joerg_wunsch@uriah.sax.de (Joerg Wunsch) |
| 19 | * dufault@hda.com (Peter Dufault) |
| 20 | * |
| 21 | * Copyright (c) 2001 Joerg Wunsch, |
| 22 | * joerg_wunsch@uriah.sax.de (Joerg Wunsch) |
| 23 | * |
| 24 | * Redistribution and use in source and binary forms, with or without |
| 25 | * modification, are permitted provided that the following conditions |
| 26 | * are met: |
| 27 | * 1. Redistributions of source code must retain the above copyright |
| 28 | * notice, this list of conditions and the following disclaimer. |
| 29 | * 2. Redistributions in binary form must reproduce the above copyright |
| 30 | * notice, this list of conditions and the following disclaimer in the |
| 31 | * documentation and/or other materials provided with the distribution. |
| 32 | * 3. All advertising materials mentioning features or use of this software |
| 33 | * must display the following acknowledgement: |
| 34 | * This product includes software developed by the University of |
| 35 | * California, Berkeley and its contributors. |
| 36 | * 4. Neither the name of the University nor the names of its contributors |
| 37 | * may be used to endorse or promote products derived from this software |
| 38 | * without specific prior written permission. |
| 39 | * |
| 40 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 41 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 43 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 44 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 45 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 46 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 48 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 49 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 50 | * SUCH DAMAGE. |
| 51 | * |
| 52 | * from: @(#)fd.c 7.4 (Berkeley) 5/25/91 |
| 53 | * $FreeBSD: src/sys/isa/fd.c,v 1.176.2.8 2002/05/15 21:56:14 joerg Exp $ |
| 54 | * |
| 55 | */ |
| 56 | |
| 57 | #include "opt_fdc.h" |
| 58 | |
| 59 | #include <sys/param.h> |
| 60 | #include <sys/systm.h> |
| 61 | #include <sys/bootmaj.h> |
| 62 | #include <sys/kernel.h> |
| 63 | #include <sys/buf.h> |
| 64 | #include <sys/bus.h> |
| 65 | #include <sys/conf.h> |
| 66 | #include <sys/diskslice.h> |
| 67 | #include <sys/disk.h> |
| 68 | #include <sys/devicestat.h> |
| 69 | #include <sys/fcntl.h> |
| 70 | #include <sys/malloc.h> |
| 71 | #include <sys/module.h> |
| 72 | #include <sys/proc.h> |
| 73 | #include <sys/priv.h> |
| 74 | #include <sys/syslog.h> |
| 75 | #include <sys/device.h> |
| 76 | #include <sys/bus.h> |
| 77 | #include <sys/rman.h> |
| 78 | #include <sys/buf2.h> |
| 79 | #include <sys/thread2.h> |
| 80 | |
| 81 | #include <machine/clock.h> |
| 82 | #include <machine/inttypes.h> |
| 83 | #include <machine/ioctl_fd.h> |
| 84 | #include <machine/stdarg.h> |
| 85 | |
| 86 | #include <bus/isa/isavar.h> |
| 87 | #include <bus/isa/isareg.h> |
| 88 | #include "fdreg.h" |
| 89 | #include "fdc.h" |
| 90 | #include <bus/isa/rtc.h> |
| 91 | |
| 92 | /* configuration flags */ |
| 93 | #define FDC_PRETEND_D0 (1 << 0) /* pretend drive 0 to be there */ |
| 94 | #define FDC_NO_FIFO (1 << 2) /* do not enable FIFO */ |
| 95 | |
| 96 | /* internally used only, not really from CMOS: */ |
| 97 | #define RTCFDT_144M_PRETENDED 0x1000 |
| 98 | |
| 99 | /* error returns for fd_cmd() */ |
| 100 | #define FD_FAILED -1 |
| 101 | #define FD_NOT_VALID -2 |
| 102 | #define FDC_ERRMAX 100 /* do not log more */ |
| 103 | /* |
| 104 | * Stop retrying after this many DMA overruns. Since each retry takes |
| 105 | * one revolution, with 300 rpm., 25 retries take approximately 10 |
| 106 | * seconds which the read attempt will block in case the DMA overrun |
| 107 | * is persistent. |
| 108 | */ |
| 109 | #define FDC_DMAOV_MAX 25 |
| 110 | |
| 111 | /* |
| 112 | * Timeout value for the PIO loops to wait until the FDC main status |
| 113 | * register matches our expectations (request for master, direction |
| 114 | * bit). This is supposed to be a number of microseconds, although |
| 115 | * timing might actually not be very accurate. |
| 116 | * |
| 117 | * Timeouts of 100 msec are believed to be required for some broken |
| 118 | * (old) hardware. |
| 119 | */ |
| 120 | #define FDSTS_TIMEOUT 100000 |
| 121 | |
| 122 | #define NUMTYPES 17 |
| 123 | #define NUMDENS (NUMTYPES - 7) |
| 124 | |
| 125 | /* These defines (-1) must match index for fd_types */ |
| 126 | #define F_TAPE_TYPE 0x020 /* bit for fd_types to indicate tape */ |
| 127 | #define NO_TYPE 0 /* must match NO_TYPE in ft.c */ |
| 128 | #define FD_1720 1 |
| 129 | #define FD_1480 2 |
| 130 | #define FD_1440 3 |
| 131 | #define FD_1200 4 |
| 132 | #define FD_820 5 |
| 133 | #define FD_800 6 |
| 134 | #define FD_720 7 |
| 135 | #define FD_360 8 |
| 136 | #define FD_640 9 |
| 137 | #define FD_1232 10 |
| 138 | |
| 139 | #define FD_1480in5_25 11 |
| 140 | #define FD_1440in5_25 12 |
| 141 | #define FD_820in5_25 13 |
| 142 | #define FD_800in5_25 14 |
| 143 | #define FD_720in5_25 15 |
| 144 | #define FD_360in5_25 16 |
| 145 | #define FD_640in5_25 17 |
| 146 | |
| 147 | |
| 148 | static struct fd_type fd_types[NUMTYPES] = |
| 149 | { |
| 150 | { 21,2,0xFF,0x04,82,3444,1,FDC_500KBPS,2,0x0C,2 }, /* 1.72M in HD 3.5in */ |
| 151 | { 18,2,0xFF,0x1B,82,2952,1,FDC_500KBPS,2,0x6C,1 }, /* 1.48M in HD 3.5in */ |
| 152 | { 18,2,0xFF,0x1B,80,2880,1,FDC_500KBPS,2,0x6C,1 }, /* 1.44M in HD 3.5in */ |
| 153 | { 15,2,0xFF,0x1B,80,2400,1,FDC_500KBPS,2,0x54,1 }, /* 1.2M in HD 5.25/3.5 */ |
| 154 | { 10,2,0xFF,0x10,82,1640,1,FDC_250KBPS,2,0x2E,1 }, /* 820K in HD 3.5in */ |
| 155 | { 10,2,0xFF,0x10,80,1600,1,FDC_250KBPS,2,0x2E,1 }, /* 800K in HD 3.5in */ |
| 156 | { 9,2,0xFF,0x20,80,1440,1,FDC_250KBPS,2,0x50,1 }, /* 720K in HD 3.5in */ |
| 157 | { 9,2,0xFF,0x2A,40, 720,1,FDC_250KBPS,2,0x50,1 }, /* 360K in DD 5.25in */ |
| 158 | { 8,2,0xFF,0x2A,80,1280,1,FDC_250KBPS,2,0x50,1 }, /* 640K in DD 5.25in */ |
| 159 | { 8,3,0xFF,0x35,77,1232,1,FDC_500KBPS,2,0x74,1 }, /* 1.23M in HD 5.25in */ |
| 160 | |
| 161 | { 18,2,0xFF,0x02,82,2952,1,FDC_500KBPS,2,0x02,2 }, /* 1.48M in HD 5.25in */ |
| 162 | { 18,2,0xFF,0x02,80,2880,1,FDC_500KBPS,2,0x02,2 }, /* 1.44M in HD 5.25in */ |
| 163 | { 10,2,0xFF,0x10,82,1640,1,FDC_300KBPS,2,0x2E,1 }, /* 820K in HD 5.25in */ |
| 164 | { 10,2,0xFF,0x10,80,1600,1,FDC_300KBPS,2,0x2E,1 }, /* 800K in HD 5.25in */ |
| 165 | { 9,2,0xFF,0x20,80,1440,1,FDC_300KBPS,2,0x50,1 }, /* 720K in HD 5.25in */ |
| 166 | { 9,2,0xFF,0x23,40, 720,2,FDC_300KBPS,2,0x50,1 }, /* 360K in HD 5.25in */ |
| 167 | { 8,2,0xFF,0x2A,80,1280,1,FDC_300KBPS,2,0x50,1 }, /* 640K in HD 5.25in */ |
| 168 | }; |
| 169 | |
| 170 | #define DRVS_PER_CTLR 2 /* 2 floppies */ |
| 171 | |
| 172 | /***********************************************************************\ |
| 173 | * Per controller structure. * |
| 174 | \***********************************************************************/ |
| 175 | devclass_t fdc_devclass; |
| 176 | |
| 177 | /***********************************************************************\ |
| 178 | * Per drive structure. * |
| 179 | * N per controller (DRVS_PER_CTLR) * |
| 180 | \***********************************************************************/ |
| 181 | struct fd_data { |
| 182 | struct fdc_data *fdc; /* pointer to controller structure */ |
| 183 | int fdsu; /* this units number on this controller */ |
| 184 | int type; /* Drive type (FD_1440...) */ |
| 185 | struct fd_type ft; /* the type descriptor */ |
| 186 | int flags; |
| 187 | #define FD_OPEN 0x01 /* it's open */ |
| 188 | #define FD_ACTIVE 0x02 /* it's active */ |
| 189 | #define FD_MOTOR 0x04 /* motor should be on */ |
| 190 | #define FD_MOTOR_WAIT 0x08 /* motor coming up */ |
| 191 | int skip; |
| 192 | int hddrv; |
| 193 | #define FD_NO_TRACK -2 |
| 194 | int track; /* where we think the head is */ |
| 195 | int options; /* user configurable options, see ioctl_fd.h */ |
| 196 | struct callout toffhandle; |
| 197 | struct callout tohandle; |
| 198 | struct callout motor; |
| 199 | struct disk disk; |
| 200 | struct devstat device_stats; |
| 201 | device_t dev; |
| 202 | fdu_t fdu; |
| 203 | }; |
| 204 | |
| 205 | struct fdc_ivars { |
| 206 | int fdunit; |
| 207 | }; |
| 208 | static devclass_t fd_devclass; |
| 209 | |
| 210 | /***********************************************************************\ |
| 211 | * Throughout this file the following conventions will be used: * |
| 212 | * fd is a pointer to the fd_data struct for the drive in question * |
| 213 | * fdc is a pointer to the fdc_data struct for the controller * |
| 214 | * fdu is the floppy drive unit number * |
| 215 | * fdcu is the floppy controller unit number * |
| 216 | * fdsu is the floppy drive unit number on that controller. (sub-unit) * |
| 217 | \***********************************************************************/ |
| 218 | |
| 219 | /* internal functions */ |
| 220 | static void fdc_intr(void *); |
| 221 | static void set_motor(struct fdc_data *, int, int); |
| 222 | # define TURNON 1 |
| 223 | # define TURNOFF 0 |
| 224 | static timeout_t fd_turnoff; |
| 225 | static timeout_t fd_motor_on; |
| 226 | static void fd_turnon(struct fd_data *); |
| 227 | static void fdc_reset(fdc_p); |
| 228 | static int fd_in(struct fdc_data *, int *); |
| 229 | static int out_fdc(struct fdc_data *, int); |
| 230 | static void fdstart(struct fdc_data *); |
| 231 | static timeout_t fd_iotimeout; |
| 232 | static timeout_t fd_pseudointr; |
| 233 | static int fdstate(struct fdc_data *); |
| 234 | static int retrier(struct fdc_data *); |
| 235 | static int fdformat(cdev_t, struct fd_formb *, struct ucred *); |
| 236 | |
| 237 | static int enable_fifo(fdc_p fdc); |
| 238 | |
| 239 | static int fifo_threshold = 8; /* XXX: should be accessible via sysctl */ |
| 240 | |
| 241 | |
| 242 | #define DEVIDLE 0 |
| 243 | #define FINDWORK 1 |
| 244 | #define DOSEEK 2 |
| 245 | #define SEEKCOMPLETE 3 |
| 246 | #define IOCOMPLETE 4 |
| 247 | #define RECALCOMPLETE 5 |
| 248 | #define STARTRECAL 6 |
| 249 | #define RESETCTLR 7 |
| 250 | #define SEEKWAIT 8 |
| 251 | #define RECALWAIT 9 |
| 252 | #define MOTORWAIT 10 |
| 253 | #define IOTIMEDOUT 11 |
| 254 | #define RESETCOMPLETE 12 |
| 255 | #define PIOREAD 13 |
| 256 | |
| 257 | #ifdef FDC_DEBUG |
| 258 | static char const * const fdstates[] = |
| 259 | { |
| 260 | "DEVIDLE", |
| 261 | "FINDWORK", |
| 262 | "DOSEEK", |
| 263 | "SEEKCOMPLETE", |
| 264 | "IOCOMPLETE", |
| 265 | "RECALCOMPLETE", |
| 266 | "STARTRECAL", |
| 267 | "RESETCTLR", |
| 268 | "SEEKWAIT", |
| 269 | "RECALWAIT", |
| 270 | "MOTORWAIT", |
| 271 | "IOTIMEDOUT", |
| 272 | "RESETCOMPLETE", |
| 273 | "PIOREAD", |
| 274 | }; |
| 275 | |
| 276 | /* CAUTION: fd_debug causes huge amounts of logging output */ |
| 277 | static int volatile fd_debug = 0; |
| 278 | #define TRACE0(arg) if(fd_debug) kprintf(arg) |
| 279 | #define TRACE1(arg1, arg2) if(fd_debug) kprintf(arg1, arg2) |
| 280 | #else /* FDC_DEBUG */ |
| 281 | #define TRACE0(arg) |
| 282 | #define TRACE1(arg1, arg2) |
| 283 | #endif /* FDC_DEBUG */ |
| 284 | |
| 285 | void |
| 286 | fdout_wr(fdc_p fdc, u_int8_t v) |
| 287 | { |
| 288 | bus_space_write_1(fdc->portt, fdc->porth, FDOUT+fdc->port_off, v); |
| 289 | } |
| 290 | |
| 291 | static u_int8_t |
| 292 | fdsts_rd(fdc_p fdc) |
| 293 | { |
| 294 | return bus_space_read_1(fdc->portt, fdc->porth, FDSTS+fdc->port_off); |
| 295 | } |
| 296 | |
| 297 | static void |
| 298 | fddata_wr(fdc_p fdc, u_int8_t v) |
| 299 | { |
| 300 | bus_space_write_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off, v); |
| 301 | } |
| 302 | |
| 303 | static u_int8_t |
| 304 | fddata_rd(fdc_p fdc) |
| 305 | { |
| 306 | return bus_space_read_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off); |
| 307 | } |
| 308 | |
| 309 | static void |
| 310 | fdctl_wr_isa(fdc_p fdc, u_int8_t v) |
| 311 | { |
| 312 | bus_space_write_1(fdc->ctlt, fdc->ctlh, 0, v); |
| 313 | } |
| 314 | |
| 315 | #if 0 |
| 316 | |
| 317 | static u_int8_t |
| 318 | fdin_rd(fdc_p fdc) |
| 319 | { |
| 320 | return bus_space_read_1(fdc->portt, fdc->porth, FDIN); |
| 321 | } |
| 322 | |
| 323 | #endif |
| 324 | |
| 325 | static d_open_t Fdopen; /* NOTE, not fdopen */ |
| 326 | static d_close_t fdclose; |
| 327 | static d_ioctl_t fdioctl; |
| 328 | static d_strategy_t fdstrategy; |
| 329 | |
| 330 | static struct dev_ops fd_ops = { |
| 331 | { "fd", 0, D_DISK }, |
| 332 | .d_open = Fdopen, |
| 333 | .d_close = fdclose, |
| 334 | .d_read = physread, |
| 335 | .d_write = physwrite, |
| 336 | .d_ioctl = fdioctl, |
| 337 | .d_strategy = fdstrategy, |
| 338 | }; |
| 339 | |
| 340 | static int |
| 341 | fdc_err(struct fdc_data *fdc, const char *s) |
| 342 | { |
| 343 | fdc->fdc_errs++; |
| 344 | if (s) { |
| 345 | if (fdc->fdc_errs < FDC_ERRMAX) |
| 346 | device_printf(fdc->fdc_dev, "%s", s); |
| 347 | else if (fdc->fdc_errs == FDC_ERRMAX) |
| 348 | device_printf(fdc->fdc_dev, "too many errors, not " |
| 349 | "logging any more\n"); |
| 350 | } |
| 351 | |
| 352 | return FD_FAILED; |
| 353 | } |
| 354 | |
| 355 | /* |
| 356 | * fd_cmd: Send a command to the chip. Takes a varargs with this structure: |
| 357 | * Unit number, |
| 358 | * # of output bytes, output bytes as ints ..., |
| 359 | * # of input bytes, input bytes as ints ... |
| 360 | */ |
| 361 | int |
| 362 | fd_cmd(struct fdc_data *fdc, int n_out, ...) |
| 363 | { |
| 364 | u_char cmd; |
| 365 | int n_in; |
| 366 | int n; |
| 367 | __va_list ap; |
| 368 | |
| 369 | __va_start(ap, n_out); |
| 370 | cmd = (u_char)(__va_arg(ap, int)); |
| 371 | __va_end(ap); |
| 372 | __va_start(ap, n_out); |
| 373 | for (n = 0; n < n_out; n++) |
| 374 | { |
| 375 | if (out_fdc(fdc, __va_arg(ap, int)) < 0) |
| 376 | { |
| 377 | char msg[50]; |
| 378 | ksnprintf(msg, sizeof(msg), |
| 379 | "cmd %x failed at out byte %d of %d\n", |
| 380 | cmd, n + 1, n_out); |
| 381 | return fdc_err(fdc, msg); |
| 382 | } |
| 383 | } |
| 384 | n_in = __va_arg(ap, int); |
| 385 | for (n = 0; n < n_in; n++) |
| 386 | { |
| 387 | int *ptr = __va_arg(ap, int *); |
| 388 | if (fd_in(fdc, ptr) < 0) |
| 389 | { |
| 390 | char msg[50]; |
| 391 | ksnprintf(msg, sizeof(msg), |
| 392 | "cmd %02x failed at in byte %d of %d\n", |
| 393 | cmd, n + 1, n_in); |
| 394 | return fdc_err(fdc, msg); |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | return 0; |
| 399 | } |
| 400 | |
| 401 | static int |
| 402 | enable_fifo(fdc_p fdc) |
| 403 | { |
| 404 | int i, j; |
| 405 | |
| 406 | if ((fdc->flags & FDC_HAS_FIFO) == 0) { |
| 407 | |
| 408 | /* |
| 409 | * XXX: |
| 410 | * Cannot use fd_cmd the normal way here, since |
| 411 | * this might be an invalid command. Thus we send the |
| 412 | * first byte, and check for an early turn of data directon. |
| 413 | */ |
| 414 | |
| 415 | if (out_fdc(fdc, I8207X_CONFIGURE) < 0) |
| 416 | return fdc_err(fdc, "Enable FIFO failed\n"); |
| 417 | |
| 418 | /* If command is invalid, return */ |
| 419 | j = FDSTS_TIMEOUT; |
| 420 | while ((i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM)) |
| 421 | != NE7_RQM && j-- > 0) { |
| 422 | if (i == (NE7_DIO | NE7_RQM)) { |
| 423 | fdc_reset(fdc); |
| 424 | return FD_FAILED; |
| 425 | } |
| 426 | DELAY(1); |
| 427 | } |
| 428 | if (j<0 || |
| 429 | fd_cmd(fdc, 3, |
| 430 | 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) { |
| 431 | fdc_reset(fdc); |
| 432 | return fdc_err(fdc, "Enable FIFO failed\n"); |
| 433 | } |
| 434 | fdc->flags |= FDC_HAS_FIFO; |
| 435 | return 0; |
| 436 | } |
| 437 | if (fd_cmd(fdc, 4, |
| 438 | I8207X_CONFIGURE, 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) |
| 439 | return fdc_err(fdc, "Re-enable FIFO failed\n"); |
| 440 | return 0; |
| 441 | } |
| 442 | |
| 443 | static int |
| 444 | fd_sense_drive_status(fdc_p fdc, int *st3p) |
| 445 | { |
| 446 | int st3; |
| 447 | |
| 448 | if (fd_cmd(fdc, 2, NE7CMD_SENSED, fdc->fdu, 1, &st3)) |
| 449 | { |
| 450 | return fdc_err(fdc, "Sense Drive Status failed\n"); |
| 451 | } |
| 452 | if (st3p) |
| 453 | *st3p = st3; |
| 454 | |
| 455 | return 0; |
| 456 | } |
| 457 | |
| 458 | static int |
| 459 | fd_sense_int(fdc_p fdc, int *st0p, int *cylp) |
| 460 | { |
| 461 | int cyl, st0, ret; |
| 462 | |
| 463 | ret = fd_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0); |
| 464 | if (ret) { |
| 465 | (void)fdc_err(fdc, |
| 466 | "sense intr err reading stat reg 0\n"); |
| 467 | return ret; |
| 468 | } |
| 469 | |
| 470 | if (st0p) |
| 471 | *st0p = st0; |
| 472 | |
| 473 | if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) { |
| 474 | /* |
| 475 | * There doesn't seem to have been an interrupt. |
| 476 | */ |
| 477 | return FD_NOT_VALID; |
| 478 | } |
| 479 | |
| 480 | if (fd_in(fdc, &cyl) < 0) { |
| 481 | return fdc_err(fdc, "can't get cyl num\n"); |
| 482 | } |
| 483 | |
| 484 | if (cylp) |
| 485 | *cylp = cyl; |
| 486 | |
| 487 | return 0; |
| 488 | } |
| 489 | |
| 490 | |
| 491 | static int |
| 492 | fd_read_status(fdc_p fdc, int fdsu) |
| 493 | { |
| 494 | int i, ret; |
| 495 | |
| 496 | for (i = 0; i < 7; i++) { |
| 497 | /* |
| 498 | * XXX types are poorly chosen. Only bytes can by read |
| 499 | * from the hardware, but fdc->status[] wants u_ints and |
| 500 | * fd_in() gives ints. |
| 501 | */ |
| 502 | int status; |
| 503 | |
| 504 | ret = fd_in(fdc, &status); |
| 505 | fdc->status[i] = status; |
| 506 | if (ret != 0) |
| 507 | break; |
| 508 | } |
| 509 | |
| 510 | if (ret == 0) |
| 511 | fdc->flags |= FDC_STAT_VALID; |
| 512 | else |
| 513 | fdc->flags &= ~FDC_STAT_VALID; |
| 514 | |
| 515 | return ret; |
| 516 | } |
| 517 | |
| 518 | /****************************************************************************/ |
| 519 | /* autoconfiguration stuff */ |
| 520 | /****************************************************************************/ |
| 521 | |
| 522 | int |
| 523 | fdc_alloc_resources(struct fdc_data *fdc) |
| 524 | { |
| 525 | device_t dev; |
| 526 | int ispnp, ispcmcia; |
| 527 | |
| 528 | dev = fdc->fdc_dev; |
| 529 | ispnp = (fdc->flags & FDC_ISPNP) != 0; |
| 530 | ispcmcia = (fdc->flags & FDC_ISPCMCIA) != 0; |
| 531 | fdc->rid_ioport = fdc->rid_irq = fdc->rid_drq = 0; |
| 532 | fdc->res_ioport = fdc->res_irq = fdc->res_drq = 0; |
| 533 | |
| 534 | /* |
| 535 | * On standard ISA, we don't just use an 8 port range |
| 536 | * (e.g. 0x3f0-0x3f7) since that covers an IDE control |
| 537 | * register at 0x3f6. |
| 538 | * |
| 539 | * Isn't PC hardware wonderful. |
| 540 | * |
| 541 | * The Y-E Data PCMCIA FDC doesn't have this problem, it |
| 542 | * uses the register with offset 6 for pseudo-DMA, and the |
| 543 | * one with offset 7 as control register. |
| 544 | */ |
| 545 | fdc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT, |
| 546 | &fdc->rid_ioport, 0ul, ~0ul, |
| 547 | ispcmcia ? 8 : (ispnp ? 1 : 6), |
| 548 | RF_ACTIVE); |
| 549 | if (fdc->res_ioport == 0) { |
| 550 | device_printf(dev, "cannot reserve I/O port range\n"); |
| 551 | return ENXIO; |
| 552 | } |
| 553 | fdc->portt = rman_get_bustag(fdc->res_ioport); |
| 554 | fdc->porth = rman_get_bushandle(fdc->res_ioport); |
| 555 | |
| 556 | if (!ispcmcia) { |
| 557 | /* |
| 558 | * Some BIOSen report the device at 0x3f2-0x3f5,0x3f7 |
| 559 | * and some at 0x3f0-0x3f5,0x3f7. We detect the former |
| 560 | * by checking the size and adjust the port address |
| 561 | * accordingly. |
| 562 | */ |
| 563 | if (bus_get_resource_count(dev, SYS_RES_IOPORT, 0) == 4) |
| 564 | fdc->port_off = -2; |
| 565 | |
| 566 | /* |
| 567 | * Register the control port range as rid 1 if it |
| 568 | * isn't there already. Most PnP BIOSen will have |
| 569 | * already done this but non-PnP configurations don't. |
| 570 | * |
| 571 | * And some (!!) report 0x3f2-0x3f5 and completely |
| 572 | * leave out the control register! It seems that some |
| 573 | * non-antique controller chips have a different |
| 574 | * method of programming the transfer speed which |
| 575 | * doesn't require the control register, but it's |
| 576 | * mighty bogus as the chip still responds to the |
| 577 | * address for the control register. |
| 578 | */ |
| 579 | if (bus_get_resource_count(dev, SYS_RES_IOPORT, 1) == 0) { |
| 580 | u_long ctlstart; |
| 581 | |
| 582 | /* Find the control port, usually 0x3f7 */ |
| 583 | ctlstart = rman_get_start(fdc->res_ioport) + |
| 584 | fdc->port_off + 7; |
| 585 | |
| 586 | bus_set_resource(dev, SYS_RES_IOPORT, 1, ctlstart, 1, |
| 587 | -1); |
| 588 | } |
| 589 | |
| 590 | /* |
| 591 | * Now (finally!) allocate the control port. |
| 592 | */ |
| 593 | fdc->rid_ctl = 1; |
| 594 | fdc->res_ctl = bus_alloc_resource(dev, SYS_RES_IOPORT, |
| 595 | &fdc->rid_ctl, |
| 596 | 0ul, ~0ul, 1, RF_ACTIVE); |
| 597 | if (fdc->res_ctl == 0) { |
| 598 | device_printf(dev, |
| 599 | "cannot reserve control I/O port range\n"); |
| 600 | return ENXIO; |
| 601 | } |
| 602 | fdc->ctlt = rman_get_bustag(fdc->res_ctl); |
| 603 | fdc->ctlh = rman_get_bushandle(fdc->res_ctl); |
| 604 | } |
| 605 | |
| 606 | fdc->res_irq = bus_alloc_resource(dev, SYS_RES_IRQ, |
| 607 | &fdc->rid_irq, 0ul, ~0ul, 1, |
| 608 | RF_ACTIVE); |
| 609 | if (fdc->res_irq == 0) { |
| 610 | device_printf(dev, "cannot reserve interrupt line\n"); |
| 611 | return ENXIO; |
| 612 | } |
| 613 | |
| 614 | if ((fdc->flags & FDC_NODMA) == 0) { |
| 615 | fdc->res_drq = bus_alloc_resource(dev, SYS_RES_DRQ, |
| 616 | &fdc->rid_drq, 0ul, ~0ul, 1, |
| 617 | RF_ACTIVE); |
| 618 | if (fdc->res_drq == 0) { |
| 619 | device_printf(dev, "cannot reserve DMA request line\n"); |
| 620 | return ENXIO; |
| 621 | } |
| 622 | fdc->dmachan = fdc->res_drq->r_start; |
| 623 | } |
| 624 | |
| 625 | return 0; |
| 626 | } |
| 627 | |
| 628 | void |
| 629 | fdc_release_resources(struct fdc_data *fdc) |
| 630 | { |
| 631 | device_t dev; |
| 632 | |
| 633 | dev = fdc->fdc_dev; |
| 634 | if (fdc->res_irq != 0) { |
| 635 | bus_deactivate_resource(dev, SYS_RES_IRQ, fdc->rid_irq, |
| 636 | fdc->res_irq); |
| 637 | bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, |
| 638 | fdc->res_irq); |
| 639 | } |
| 640 | if (fdc->res_ctl != 0) { |
| 641 | bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, |
| 642 | fdc->res_ctl); |
| 643 | bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, |
| 644 | fdc->res_ctl); |
| 645 | } |
| 646 | if (fdc->res_ioport != 0) { |
| 647 | bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, |
| 648 | fdc->res_ioport); |
| 649 | bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, |
| 650 | fdc->res_ioport); |
| 651 | } |
| 652 | if (fdc->res_drq != 0) { |
| 653 | bus_deactivate_resource(dev, SYS_RES_DRQ, fdc->rid_drq, |
| 654 | fdc->res_drq); |
| 655 | bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, |
| 656 | fdc->res_drq); |
| 657 | } |
| 658 | } |
| 659 | |
| 660 | /****************************************************************************/ |
| 661 | /* autoconfiguration stuff */ |
| 662 | /****************************************************************************/ |
| 663 | |
| 664 | static struct isa_pnp_id fdc_ids[] = { |
| 665 | {0x0007d041, "PC standard floppy disk controller"}, /* PNP0700 */ |
| 666 | {0x0107d041, "Standard floppy controller supporting MS Device Bay Spec"}, /* PNP0701 */ |
| 667 | {0} |
| 668 | }; |
| 669 | |
| 670 | int |
| 671 | fdc_read_ivar(device_t dev, device_t child, int which, u_long *result) |
| 672 | { |
| 673 | struct fdc_ivars *ivars = device_get_ivars(child); |
| 674 | |
| 675 | switch (which) { |
| 676 | case FDC_IVAR_FDUNIT: |
| 677 | *result = ivars->fdunit; |
| 678 | break; |
| 679 | default: |
| 680 | return ENOENT; |
| 681 | } |
| 682 | return 0; |
| 683 | } |
| 684 | |
| 685 | /* |
| 686 | * fdc controller section. |
| 687 | */ |
| 688 | static int |
| 689 | fdc_probe(device_t dev) |
| 690 | { |
| 691 | int error, ic_type; |
| 692 | struct fdc_data *fdc; |
| 693 | |
| 694 | fdc = device_get_softc(dev); |
| 695 | bzero(fdc, sizeof *fdc); |
| 696 | fdc->fdc_dev = dev; |
| 697 | fdc->fdctl_wr = fdctl_wr_isa; |
| 698 | |
| 699 | /* Check pnp ids */ |
| 700 | error = ISA_PNP_PROBE(device_get_parent(dev), dev, fdc_ids); |
| 701 | if (error == ENXIO) |
| 702 | return ENXIO; |
| 703 | if (error == 0) |
| 704 | fdc->flags |= FDC_ISPNP; |
| 705 | |
| 706 | /* Attempt to allocate our resources for the duration of the probe */ |
| 707 | error = fdc_alloc_resources(fdc); |
| 708 | if (error) |
| 709 | goto out; |
| 710 | |
| 711 | /* First - lets reset the floppy controller */ |
| 712 | fdout_wr(fdc, 0); |
| 713 | DELAY(100); |
| 714 | fdout_wr(fdc, FDO_FRST); |
| 715 | |
| 716 | /* see if it can handle a command */ |
| 717 | if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), |
| 718 | NE7_SPEC_2(2, 0), 0)) { |
| 719 | error = ENXIO; |
| 720 | goto out; |
| 721 | } |
| 722 | |
| 723 | if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) { |
| 724 | ic_type = (u_char)ic_type; |
| 725 | switch (ic_type) { |
| 726 | case 0x80: |
| 727 | device_set_desc(dev, "NEC 765 or clone"); |
| 728 | fdc->fdct = FDC_NE765; |
| 729 | break; |
| 730 | case 0x81: |
| 731 | device_set_desc(dev, "Intel 82077 or clone"); |
| 732 | fdc->fdct = FDC_I82077; |
| 733 | break; |
| 734 | case 0x90: |
| 735 | device_set_desc(dev, "NEC 72065B or clone"); |
| 736 | fdc->fdct = FDC_NE72065; |
| 737 | break; |
| 738 | default: |
| 739 | device_set_desc(dev, "generic floppy controller"); |
| 740 | fdc->fdct = FDC_UNKNOWN; |
| 741 | break; |
| 742 | } |
| 743 | } |
| 744 | |
| 745 | out: |
| 746 | fdc_release_resources(fdc); |
| 747 | return (error); |
| 748 | } |
| 749 | |
| 750 | /* |
| 751 | * Add a child device to the fdc controller. It will then be probed etc. |
| 752 | */ |
| 753 | static void |
| 754 | fdc_add_child(device_t dev, const char *name, int unit) |
| 755 | { |
| 756 | int disabled; |
| 757 | struct fdc_ivars *ivar; |
| 758 | device_t child; |
| 759 | |
| 760 | ivar = kmalloc(sizeof *ivar, M_DEVBUF /* XXX */, M_WAITOK | M_ZERO); |
| 761 | if (resource_int_value(name, unit, "drive", &ivar->fdunit) != 0) |
| 762 | ivar->fdunit = 0; |
| 763 | child = device_add_child(dev, name, unit); |
| 764 | if (child == NULL) |
| 765 | return; |
| 766 | device_set_ivars(child, ivar); |
| 767 | if (resource_int_value(name, unit, "disabled", &disabled) == 0 |
| 768 | && disabled != 0) |
| 769 | device_disable(child); |
| 770 | } |
| 771 | |
| 772 | int |
| 773 | fdc_attach(device_t dev) |
| 774 | { |
| 775 | struct fdc_data *fdc; |
| 776 | int i, error; |
| 777 | |
| 778 | fdc = device_get_softc(dev); |
| 779 | |
| 780 | callout_init(&fdc->pseudointr_ch); |
| 781 | |
| 782 | error = fdc_alloc_resources(fdc); |
| 783 | if (error) { |
| 784 | device_printf(dev, "cannot reacquire resources\n"); |
| 785 | return error; |
| 786 | } |
| 787 | error = BUS_SETUP_INTR(device_get_parent(dev), dev, fdc->res_irq, |
| 788 | 0, fdc_intr, fdc, |
| 789 | &fdc->fdc_intr, NULL, NULL); |
| 790 | if (error) { |
| 791 | device_printf(dev, "cannot setup interrupt\n"); |
| 792 | return error; |
| 793 | } |
| 794 | fdc->fdcu = device_get_unit(dev); |
| 795 | fdc->flags |= FDC_ATTACHED; |
| 796 | |
| 797 | if ((fdc->flags & FDC_NODMA) == 0) { |
| 798 | /* Acquire the DMA channel forever, The driver will do the rest */ |
| 799 | /* XXX should integrate with rman */ |
| 800 | isa_dma_acquire(fdc->dmachan); |
| 801 | isa_dmainit(fdc->dmachan, 128 << 3 /* XXX max secsize */); |
| 802 | } |
| 803 | fdc->state = DEVIDLE; |
| 804 | |
| 805 | /* reset controller, turn motor off, clear fdout mirror reg */ |
| 806 | fdout_wr(fdc, ((fdc->fdout = 0))); |
| 807 | bioq_init(&fdc->bio_queue); |
| 808 | |
| 809 | /* |
| 810 | * Probe and attach any children. We should probably detect |
| 811 | * devices from the BIOS unless overridden. |
| 812 | */ |
| 813 | for (i = resource_query_string(-1, "at", device_get_nameunit(dev)); |
| 814 | i != -1; |
| 815 | i = resource_query_string(i, "at", device_get_nameunit(dev))) |
| 816 | fdc_add_child(dev, resource_query_name(i), |
| 817 | resource_query_unit(i)); |
| 818 | |
| 819 | return (bus_generic_attach(dev)); |
| 820 | } |
| 821 | |
| 822 | int |
| 823 | fdc_print_child(device_t me, device_t child) |
| 824 | { |
| 825 | int retval = 0; |
| 826 | |
| 827 | retval += bus_print_child_header(me, child); |
| 828 | retval += kprintf(" on %s drive %d\n", device_get_nameunit(me), |
| 829 | fdc_get_fdunit(child)); |
| 830 | |
| 831 | return (retval); |
| 832 | } |
| 833 | |
| 834 | static device_method_t fdc_methods[] = { |
| 835 | /* Device interface */ |
| 836 | DEVMETHOD(device_probe, fdc_probe), |
| 837 | DEVMETHOD(device_attach, fdc_attach), |
| 838 | DEVMETHOD(device_detach, bus_generic_detach), |
| 839 | DEVMETHOD(device_shutdown, bus_generic_shutdown), |
| 840 | DEVMETHOD(device_suspend, bus_generic_suspend), |
| 841 | DEVMETHOD(device_resume, bus_generic_resume), |
| 842 | |
| 843 | /* Bus interface */ |
| 844 | DEVMETHOD(bus_print_child, fdc_print_child), |
| 845 | DEVMETHOD(bus_read_ivar, fdc_read_ivar), |
| 846 | /* Our children never use any other bus interface methods. */ |
| 847 | |
| 848 | { 0, 0 } |
| 849 | }; |
| 850 | |
| 851 | static driver_t fdc_driver = { |
| 852 | "fdc", |
| 853 | fdc_methods, |
| 854 | sizeof(struct fdc_data) |
| 855 | }; |
| 856 | |
| 857 | DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, NULL, NULL); |
| 858 | DRIVER_MODULE(fdc, acpi, fdc_driver, fdc_devclass, NULL, NULL); |
| 859 | |
| 860 | /******************************************************************/ |
| 861 | /* |
| 862 | * devices attached to the controller section. |
| 863 | */ |
| 864 | static int |
| 865 | fd_probe(device_t dev) |
| 866 | { |
| 867 | int i; |
| 868 | u_int fdt, st0, st3; |
| 869 | struct fd_data *fd; |
| 870 | struct fdc_data *fdc; |
| 871 | fdsu_t fdsu; |
| 872 | static int fd_fifo = 0; |
| 873 | |
| 874 | fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */ |
| 875 | fd = device_get_softc(dev); |
| 876 | fdc = device_get_softc(device_get_parent(dev)); |
| 877 | |
| 878 | bzero(fd, sizeof *fd); |
| 879 | fd->dev = dev; |
| 880 | fd->fdc = fdc; |
| 881 | fd->fdsu = fdsu; |
| 882 | fd->fdu = device_get_unit(dev); |
| 883 | |
| 884 | #ifdef __i386__ |
| 885 | /* look up what bios thinks we have */ |
| 886 | switch (fd->fdu) { |
| 887 | case 0: |
| 888 | if ((fdc->flags & FDC_ISPCMCIA)) |
| 889 | fdt = RTCFDT_144M; |
| 890 | else if (device_get_flags(fdc->fdc_dev) & FDC_PRETEND_D0) |
| 891 | fdt = RTCFDT_144M | RTCFDT_144M_PRETENDED; |
| 892 | else |
| 893 | fdt = (rtcin(RTC_FDISKETTE) & 0xf0); |
| 894 | break; |
| 895 | case 1: |
| 896 | fdt = ((rtcin(RTC_FDISKETTE) << 4) & 0xf0); |
| 897 | break; |
| 898 | default: |
| 899 | fdt = RTCFDT_NONE; |
| 900 | break; |
| 901 | } |
| 902 | #else |
| 903 | fdt = RTCFDT_144M; /* XXX probably */ |
| 904 | #endif |
| 905 | |
| 906 | /* is there a unit? */ |
| 907 | if (fdt == RTCFDT_NONE) |
| 908 | return (ENXIO); |
| 909 | |
| 910 | /* select it */ |
| 911 | set_motor(fdc, fdsu, TURNON); |
| 912 | DELAY(1000000); /* 1 sec */ |
| 913 | |
| 914 | /* XXX This doesn't work before the first set_motor() */ |
| 915 | if (fd_fifo == 0 && fdc->fdct != FDC_NE765 && fdc->fdct != FDC_UNKNOWN |
| 916 | && (device_get_flags(fdc->fdc_dev) & FDC_NO_FIFO) == 0 |
| 917 | && enable_fifo(fdc) == 0) { |
| 918 | device_printf(device_get_parent(dev), |
| 919 | "FIFO enabled, %d bytes threshold\n", fifo_threshold); |
| 920 | } |
| 921 | fd_fifo = 1; |
| 922 | |
| 923 | if ((fd_cmd(fdc, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) |
| 924 | && (st3 & NE7_ST3_T0)) { |
| 925 | /* if at track 0, first seek inwards */ |
| 926 | /* seek some steps: */ |
| 927 | fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0); |
| 928 | DELAY(300000); /* ...wait a moment... */ |
| 929 | fd_sense_int(fdc, 0, 0); /* make ctrlr happy */ |
| 930 | } |
| 931 | |
| 932 | /* If we're at track 0 first seek inwards. */ |
| 933 | if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) { |
| 934 | /* Seek some steps... */ |
| 935 | if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { |
| 936 | /* ...wait a moment... */ |
| 937 | DELAY(300000); |
| 938 | /* make ctrlr happy: */ |
| 939 | fd_sense_int(fdc, 0, 0); |
| 940 | } |
| 941 | } |
| 942 | |
| 943 | for (i = 0; i < 2; i++) { |
| 944 | /* |
| 945 | * we must recalibrate twice, just in case the |
| 946 | * heads have been beyond cylinder 76, since most |
| 947 | * FDCs still barf when attempting to recalibrate |
| 948 | * more than 77 steps |
| 949 | */ |
| 950 | /* go back to 0: */ |
| 951 | if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { |
| 952 | /* a second being enough for full stroke seek*/ |
| 953 | DELAY(i == 0 ? 1000000 : 300000); |
| 954 | |
| 955 | /* anything responding? */ |
| 956 | if (fd_sense_int(fdc, &st0, 0) == 0 && |
| 957 | (st0 & NE7_ST0_EC) == 0) |
| 958 | break; /* already probed succesfully */ |
| 959 | } |
| 960 | } |
| 961 | |
| 962 | set_motor(fdc, fdsu, TURNOFF); |
| 963 | |
| 964 | if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */ |
| 965 | return (ENXIO); |
| 966 | |
| 967 | fd->track = FD_NO_TRACK; |
| 968 | fd->fdc = fdc; |
| 969 | fd->fdsu = fdsu; |
| 970 | fd->options = 0; |
| 971 | callout_init(&fd->toffhandle); |
| 972 | callout_init(&fd->tohandle); |
| 973 | callout_init(&fd->motor); |
| 974 | |
| 975 | switch (fdt) { |
| 976 | case RTCFDT_12M: |
| 977 | device_set_desc(dev, "1200-KB 5.25\" drive"); |
| 978 | fd->type = FD_1200; |
| 979 | break; |
| 980 | case RTCFDT_144M | RTCFDT_144M_PRETENDED: |
| 981 | device_set_desc(dev, "config-pretended 1440-MB 3.5\" drive"); |
| 982 | fd->type = FD_1440; |
| 983 | break; |
| 984 | case RTCFDT_144M: |
| 985 | device_set_desc(dev, "1440-KB 3.5\" drive"); |
| 986 | fd->type = FD_1440; |
| 987 | break; |
| 988 | case RTCFDT_288M: |
| 989 | case RTCFDT_288M_1: |
| 990 | device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); |
| 991 | fd->type = FD_1440; |
| 992 | break; |
| 993 | case RTCFDT_360K: |
| 994 | device_set_desc(dev, "360-KB 5.25\" drive"); |
| 995 | fd->type = FD_360; |
| 996 | break; |
| 997 | case RTCFDT_720K: |
| 998 | kprintf("720-KB 3.5\" drive"); |
| 999 | fd->type = FD_720; |
| 1000 | break; |
| 1001 | default: |
| 1002 | return (ENXIO); |
| 1003 | } |
| 1004 | fd->ft = fd_types[fd->type - 1]; |
| 1005 | return (0); |
| 1006 | } |
| 1007 | |
| 1008 | static int |
| 1009 | fd_attach(device_t dev) |
| 1010 | { |
| 1011 | struct disk_info info; |
| 1012 | struct fd_data *fd; |
| 1013 | struct fd_type *ft; |
| 1014 | |
| 1015 | fd = device_get_softc(dev); |
| 1016 | |
| 1017 | disk_create(fd->fdu, &fd->disk, &fd_ops); |
| 1018 | disk_setdisktype(&fd->disk, "floppy"); |
| 1019 | |
| 1020 | /* |
| 1021 | * Make special raw floppy devices with preset types to |
| 1022 | * make formatting easier. These override the disk management |
| 1023 | * layer for the whole-slice-disk for partitions 128-191. Note |
| 1024 | * that we do not override partition 255, which is the |
| 1025 | * whole-slice-part. If we did we would have to provide our |
| 1026 | * own DIOCGPART ioctl. |
| 1027 | */ |
| 1028 | make_dev(&fd_ops, dkmakeminor(fd->fdu, WHOLE_DISK_SLICE, 128 + 1), |
| 1029 | UID_ROOT, GID_WHEEL, 0600, "fd%d.1720", fd->fdu); |
| 1030 | make_dev(&fd_ops, dkmakeminor(fd->fdu, WHOLE_DISK_SLICE, 128 + 2), |
| 1031 | UID_ROOT, GID_WHEEL, 0600, "fd%d.1480", fd->fdu); |
| 1032 | make_dev(&fd_ops, dkmakeminor(fd->fdu, WHOLE_DISK_SLICE, 128 + 3), |
| 1033 | UID_ROOT, GID_WHEEL, 0600, "fd%d.1440", fd->fdu); |
| 1034 | make_dev(&fd_ops, dkmakeminor(fd->fdu, WHOLE_DISK_SLICE, 128 + 4), |
| 1035 | UID_ROOT, GID_WHEEL, 0600, "fd%d.1200", fd->fdu); |
| 1036 | make_dev(&fd_ops, dkmakeminor(fd->fdu, WHOLE_DISK_SLICE, 128 + 5), |
| 1037 | UID_ROOT, GID_WHEEL, 0600, "fd%d.820", fd->fdu); |
| 1038 | make_dev(&fd_ops, dkmakeminor(fd->fdu, WHOLE_DISK_SLICE, 128 + 6), |
| 1039 | UID_ROOT, GID_WHEEL, 0600, "fd%d.800", fd->fdu); |
| 1040 | make_dev(&fd_ops, dkmakeminor(fd->fdu, WHOLE_DISK_SLICE, 128 + 7), |
| 1041 | UID_ROOT, GID_WHEEL, 0600, "fd%d.720", fd->fdu); |
| 1042 | make_dev(&fd_ops, dkmakeminor(fd->fdu, WHOLE_DISK_SLICE, 128 + 8), |
| 1043 | UID_ROOT, GID_WHEEL, 0600, "fd%d.360", fd->fdu); |
| 1044 | make_dev(&fd_ops, dkmakeminor(fd->fdu, WHOLE_DISK_SLICE, 128 + 9), |
| 1045 | UID_ROOT, GID_WHEEL, 0600, "fd%d.640", fd->fdu); |
| 1046 | make_dev(&fd_ops, dkmakeminor(fd->fdu, WHOLE_DISK_SLICE, 128 + 10), |
| 1047 | UID_ROOT, GID_WHEEL, 0600, "fd%d.1232", fd->fdu); |
| 1048 | |
| 1049 | devstat_add_entry(&fd->device_stats, device_get_name(dev), |
| 1050 | device_get_unit(dev), 512, DEVSTAT_NO_ORDERED_TAGS, |
| 1051 | DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER, |
| 1052 | DEVSTAT_PRIORITY_FD); |
| 1053 | |
| 1054 | if (fd->type != NO_TYPE) { |
| 1055 | bzero(&info, sizeof(info)); |
| 1056 | ft = &fd_types[fd->type - 1]; |
| 1057 | info.d_media_blksize = 128 << ft->secsize; |
| 1058 | info.d_media_blocks = ft->size; |
| 1059 | info.d_dsflags = DSO_COMPATPARTA | DSO_COMPATMBR; |
| 1060 | info.d_nheads = ft->heads; |
| 1061 | info.d_secpertrack = ft->sectrac; |
| 1062 | info.d_secpercyl = ft->sectrac * ft->heads; |
| 1063 | info.d_ncylinders = ft->size / info.d_secpercyl; |
| 1064 | disk_setdiskinfo(&fd->disk, &info); |
| 1065 | } |
| 1066 | return (0); |
| 1067 | } |
| 1068 | |
| 1069 | static int |
| 1070 | fd_detach(device_t dev) |
| 1071 | { |
| 1072 | struct fd_data *fd; |
| 1073 | |
| 1074 | fd = device_get_softc(dev); |
| 1075 | kprintf("devfs: Please make sure that only the right fd device was removed!!!\n"); |
| 1076 | dev_ops_remove_minor(&fd_ops, |
| 1077 | /*dkunitmask() | dkmakeslice(-1) | dkmakepart(128|64),*/ |
| 1078 | dkmakeminor(fd->fdu, WHOLE_DISK_SLICE, 128)); |
| 1079 | disk_invalidate(&fd->disk); |
| 1080 | disk_destroy(&fd->disk); |
| 1081 | devstat_remove_entry(&fd->device_stats); |
| 1082 | callout_stop(&fd->toffhandle); |
| 1083 | callout_stop(&fd->motor); |
| 1084 | |
| 1085 | return (0); |
| 1086 | } |
| 1087 | |
| 1088 | static device_method_t fd_methods[] = { |
| 1089 | /* Device interface */ |
| 1090 | DEVMETHOD(device_probe, fd_probe), |
| 1091 | DEVMETHOD(device_attach, fd_attach), |
| 1092 | DEVMETHOD(device_detach, fd_detach), |
| 1093 | DEVMETHOD(device_shutdown, bus_generic_shutdown), |
| 1094 | DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ |
| 1095 | DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ |
| 1096 | |
| 1097 | { 0, 0 } |
| 1098 | }; |
| 1099 | |
| 1100 | static driver_t fd_driver = { |
| 1101 | "fd", |
| 1102 | fd_methods, |
| 1103 | sizeof(struct fd_data) |
| 1104 | }; |
| 1105 | |
| 1106 | DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, NULL, NULL); |
| 1107 | |
| 1108 | /****************************************************************************/ |
| 1109 | /* motor control stuff */ |
| 1110 | /* remember to not deselect the drive we're working on */ |
| 1111 | /****************************************************************************/ |
| 1112 | static void |
| 1113 | set_motor(struct fdc_data *fdc, int fdsu, int turnon) |
| 1114 | { |
| 1115 | int fdout = fdc->fdout; |
| 1116 | int needspecify = 0; |
| 1117 | |
| 1118 | if(turnon) { |
| 1119 | fdout &= ~FDO_FDSEL; |
| 1120 | fdout |= (FDO_MOEN0 << fdsu) + fdsu; |
| 1121 | } else |
| 1122 | fdout &= ~(FDO_MOEN0 << fdsu); |
| 1123 | |
| 1124 | if(!turnon |
| 1125 | && (fdout & (FDO_MOEN0+FDO_MOEN1+FDO_MOEN2+FDO_MOEN3)) == 0) |
| 1126 | /* gonna turn off the last drive, put FDC to bed */ |
| 1127 | fdout &= ~ (FDO_FRST|FDO_FDMAEN); |
| 1128 | else { |
| 1129 | /* make sure controller is selected and specified */ |
| 1130 | if((fdout & (FDO_FRST|FDO_FDMAEN)) == 0) |
| 1131 | needspecify = 1; |
| 1132 | fdout |= (FDO_FRST|FDO_FDMAEN); |
| 1133 | } |
| 1134 | |
| 1135 | fdout_wr(fdc, fdout); |
| 1136 | fdc->fdout = fdout; |
| 1137 | TRACE1("[0x%x->FDOUT]", fdout); |
| 1138 | |
| 1139 | if (needspecify) { |
| 1140 | /* |
| 1141 | * XXX |
| 1142 | * special case: since we have just woken up the FDC |
| 1143 | * from its sleep, we silently assume the command will |
| 1144 | * be accepted, and do not test for a timeout |
| 1145 | */ |
| 1146 | (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, |
| 1147 | NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), |
| 1148 | 0); |
| 1149 | if (fdc->flags & FDC_HAS_FIFO) |
| 1150 | (void) enable_fifo(fdc); |
| 1151 | } |
| 1152 | } |
| 1153 | |
| 1154 | static void |
| 1155 | fd_turnoff(void *xfd) |
| 1156 | { |
| 1157 | fd_p fd = xfd; |
| 1158 | |
| 1159 | TRACE1("[fd%d: turnoff]", fd->fdu); |
| 1160 | |
| 1161 | crit_enter(); |
| 1162 | /* |
| 1163 | * Don't turn off the motor yet if the drive is active. |
| 1164 | * |
| 1165 | * If we got here, this could only mean we missed an interrupt. |
| 1166 | * This can e. g. happen on the Y-E Date PCMCIA floppy controller |
| 1167 | * after a controller reset. Just schedule a pseudo-interrupt |
| 1168 | * so the state machine gets re-entered. |
| 1169 | */ |
| 1170 | if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) { |
| 1171 | fdc_intr(fd->fdc); |
| 1172 | crit_exit(); |
| 1173 | return; |
| 1174 | } |
| 1175 | |
| 1176 | fd->flags &= ~FD_MOTOR; |
| 1177 | set_motor(fd->fdc, fd->fdsu, TURNOFF); |
| 1178 | crit_exit(); |
| 1179 | } |
| 1180 | |
| 1181 | static void |
| 1182 | fd_motor_on(void *xfd) |
| 1183 | { |
| 1184 | fd_p fd = xfd; |
| 1185 | |
| 1186 | crit_enter(); |
| 1187 | fd->flags &= ~FD_MOTOR_WAIT; |
| 1188 | if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT)) |
| 1189 | { |
| 1190 | fdc_intr(fd->fdc); |
| 1191 | } |
| 1192 | crit_exit(); |
| 1193 | } |
| 1194 | |
| 1195 | static void |
| 1196 | fd_turnon(fd_p fd) |
| 1197 | { |
| 1198 | if(!(fd->flags & FD_MOTOR)) |
| 1199 | { |
| 1200 | fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT); |
| 1201 | set_motor(fd->fdc, fd->fdsu, TURNON); |
| 1202 | callout_reset(&fd->motor, hz, fd_motor_on, fd); |
| 1203 | } |
| 1204 | } |
| 1205 | |
| 1206 | static void |
| 1207 | fdc_reset(fdc_p fdc) |
| 1208 | { |
| 1209 | /* Try a reset, keep motor on */ |
| 1210 | fdout_wr(fdc, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); |
| 1211 | TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); |
| 1212 | DELAY(100); |
| 1213 | /* enable FDC, but defer interrupts a moment */ |
| 1214 | fdout_wr(fdc, fdc->fdout & ~FDO_FDMAEN); |
| 1215 | TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN); |
| 1216 | DELAY(100); |
| 1217 | fdout_wr(fdc, fdc->fdout); |
| 1218 | TRACE1("[0x%x->FDOUT]", fdc->fdout); |
| 1219 | |
| 1220 | /* XXX after a reset, silently believe the FDC will accept commands */ |
| 1221 | (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, |
| 1222 | NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), |
| 1223 | 0); |
| 1224 | if (fdc->flags & FDC_HAS_FIFO) |
| 1225 | (void) enable_fifo(fdc); |
| 1226 | } |
| 1227 | |
| 1228 | /****************************************************************************/ |
| 1229 | /* fdc in/out */ |
| 1230 | /****************************************************************************/ |
| 1231 | /* |
| 1232 | * FDC IO functions, take care of the main status register, timeout |
| 1233 | * in case the desired status bits are never set. |
| 1234 | * |
| 1235 | * These PIO loops initially start out with short delays between |
| 1236 | * each iteration in the expectation that the required condition |
| 1237 | * is usually met quickly, so it can be handled immediately. After |
| 1238 | * about 1 ms, stepping is increased to achieve a better timing |
| 1239 | * accuracy in the calls to DELAY(). |
| 1240 | */ |
| 1241 | static int |
| 1242 | fd_in(struct fdc_data *fdc, int *ptr) |
| 1243 | { |
| 1244 | int i, j, step; |
| 1245 | |
| 1246 | for (j = 0, step = 1; |
| 1247 | (i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) != (NE7_DIO|NE7_RQM) && |
| 1248 | j < FDSTS_TIMEOUT; |
| 1249 | j += step) { |
| 1250 | if (i == NE7_RQM) |
| 1251 | return (fdc_err(fdc, "ready for output in input\n")); |
| 1252 | if (j == 1000) |
| 1253 | step = 1000; |
| 1254 | DELAY(step); |
| 1255 | } |
| 1256 | if (j >= FDSTS_TIMEOUT) |
| 1257 | return (fdc_err(fdc, bootverbose? "input ready timeout\n": 0)); |
| 1258 | #ifdef FDC_DEBUG |
| 1259 | i = fddata_rd(fdc); |
| 1260 | TRACE1("[FDDATA->0x%x]", (unsigned char)i); |
| 1261 | *ptr = i; |
| 1262 | return (0); |
| 1263 | #else /* !FDC_DEBUG */ |
| 1264 | i = fddata_rd(fdc); |
| 1265 | if (ptr) |
| 1266 | *ptr = i; |
| 1267 | return (0); |
| 1268 | #endif /* FDC_DEBUG */ |
| 1269 | } |
| 1270 | |
| 1271 | static int |
| 1272 | out_fdc(struct fdc_data *fdc, int x) |
| 1273 | { |
| 1274 | int i, j, step; |
| 1275 | |
| 1276 | for (j = 0, step = 1; |
| 1277 | (i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) != NE7_RQM && |
| 1278 | j < FDSTS_TIMEOUT; |
| 1279 | j += step) { |
| 1280 | if (i == (NE7_DIO|NE7_RQM)) |
| 1281 | return (fdc_err(fdc, "ready for input in output\n")); |
| 1282 | if (j == 1000) |
| 1283 | step = 1000; |
| 1284 | DELAY(step); |
| 1285 | } |
| 1286 | if (j >= FDSTS_TIMEOUT) |
| 1287 | return (fdc_err(fdc, bootverbose? "output ready timeout\n": 0)); |
| 1288 | |
| 1289 | /* Send the command and return */ |
| 1290 | fddata_wr(fdc, x); |
| 1291 | TRACE1("[0x%x->FDDATA]", x); |
| 1292 | return (0); |
| 1293 | } |
| 1294 | |
| 1295 | /****************************************************************************/ |
| 1296 | /* fdopen/fdclose */ |
| 1297 | /****************************************************************************/ |
| 1298 | int |
| 1299 | Fdopen(struct dev_open_args *ap) |
| 1300 | { |
| 1301 | cdev_t dev = ap->a_head.a_dev; |
| 1302 | fdu_t fdu = dkunit(dev); |
| 1303 | struct disk_info info; |
| 1304 | struct fd_type *ft; |
| 1305 | int type; |
| 1306 | int changetype; |
| 1307 | fd_p fd; |
| 1308 | fdc_p fdc; |
| 1309 | |
| 1310 | /* check bounds */ |
| 1311 | if ((fd = devclass_get_softc(fd_devclass, fdu)) == 0) |
| 1312 | return (ENXIO); |
| 1313 | fdc = fd->fdc; |
| 1314 | if ((fdc == NULL) || (fd->type == NO_TYPE)) |
| 1315 | return (ENXIO); |
| 1316 | |
| 1317 | /* |
| 1318 | * Figure out the type of floppy. There are special whole-disk-device |
| 1319 | * overrides that will override the current type. |
| 1320 | */ |
| 1321 | type = dkpart(dev); |
| 1322 | if (type == WHOLE_SLICE_PART) { |
| 1323 | type = fd->type; /* do not change selected type data */ |
| 1324 | changetype = 0; |
| 1325 | } else if (type > 128) { |
| 1326 | type -= 128; /* set to specific format */ |
| 1327 | changetype = 1; |
| 1328 | } else { |
| 1329 | type = fd->type; /* reset to default */ |
| 1330 | changetype = 1; |
| 1331 | } |
| 1332 | if (type > NUMDENS) |
| 1333 | return (ENXIO); |
| 1334 | if (type != fd->type) { |
| 1335 | /* |
| 1336 | * For each type of basic drive, make sure we are trying |
| 1337 | * to open a type it can do, |
| 1338 | */ |
| 1339 | switch (fd->type) { |
| 1340 | case FD_360: |
| 1341 | return (ENXIO); |
| 1342 | case FD_720: |
| 1343 | if ( type != FD_820 |
| 1344 | && type != FD_800 |
| 1345 | && type != FD_640 |
| 1346 | ) |
| 1347 | return (ENXIO); |
| 1348 | break; |
| 1349 | case FD_1200: |
| 1350 | switch (type) { |
| 1351 | case FD_1480: |
| 1352 | type = FD_1480in5_25; |
| 1353 | break; |
| 1354 | case FD_1440: |
| 1355 | type = FD_1440in5_25; |
| 1356 | break; |
| 1357 | case FD_1232: |
| 1358 | break; |
| 1359 | case FD_820: |
| 1360 | type = FD_820in5_25; |
| 1361 | break; |
| 1362 | case FD_800: |
| 1363 | type = FD_800in5_25; |
| 1364 | break; |
| 1365 | case FD_720: |
| 1366 | type = FD_720in5_25; |
| 1367 | break; |
| 1368 | case FD_640: |
| 1369 | type = FD_640in5_25; |
| 1370 | break; |
| 1371 | case FD_360: |
| 1372 | type = FD_360in5_25; |
| 1373 | break; |
| 1374 | default: |
| 1375 | return(ENXIO); |
| 1376 | } |
| 1377 | break; |
| 1378 | case FD_1440: |
| 1379 | if ( type != FD_1720 |
| 1380 | && type != FD_1480 |
| 1381 | && type != FD_1200 |
| 1382 | && type != FD_820 |
| 1383 | && type != FD_800 |
| 1384 | && type != FD_720 |
| 1385 | && type != FD_640 |
| 1386 | ) |
| 1387 | return(ENXIO); |
| 1388 | break; |
| 1389 | } |
| 1390 | } |
| 1391 | |
| 1392 | /* |
| 1393 | * fd->type is the basic drive type, not the current format |
| 1394 | * we are reading. We only change the type when opening the |
| 1395 | * whole-slice-partition |
| 1396 | */ |
| 1397 | if (changetype) |
| 1398 | fd->ft = fd_types[type - 1]; |
| 1399 | fd->flags |= FD_OPEN; |
| 1400 | |
| 1401 | /* |
| 1402 | * Clearing the DMA overrun counter at open time is a bit messy. |
| 1403 | * Since we're only managing one counter per controller, opening |
| 1404 | * the second drive could mess it up. Anyway, if the DMA overrun |
| 1405 | * condition is really persistent, it will eventually time out |
| 1406 | * still. OTOH, clearing it here will ensure we'll at least start |
| 1407 | * trying again after a previous (maybe even long ago) failure. |
| 1408 | * Also, this is merely a stop-gap measure only that should not |
| 1409 | * happen during normal operation, so we can tolerate it to be a |
| 1410 | * bit sloppy about this. |
| 1411 | */ |
| 1412 | fdc->dma_overruns = 0; |
| 1413 | |
| 1414 | /* |
| 1415 | * Set disk parameters for the disk management layer. |
| 1416 | * |
| 1417 | * Note that we do not set RAWEXTENSIONS here. We override |
| 1418 | * the minor numbers in the raw-extension range and handle them |
| 1419 | * directly. |
| 1420 | */ |
| 1421 | bzero(&info, sizeof(info)); |
| 1422 | ft = &fd->ft; |
| 1423 | info.d_media_blksize = 128 << ft->secsize; |
| 1424 | info.d_media_blocks = ft->size; |
| 1425 | info.d_dsflags = DSO_COMPATPARTA | DSO_COMPATMBR; |
| 1426 | info.d_nheads = ft->heads; |
| 1427 | info.d_secpertrack = ft->sectrac; |
| 1428 | info.d_secpercyl = ft->sectrac * ft->heads; |
| 1429 | info.d_ncylinders = ft->size / info.d_secpercyl; |
| 1430 | disk_setdiskinfo(&fd->disk, &info); |
| 1431 | |
| 1432 | return 0; |
| 1433 | } |
| 1434 | |
| 1435 | int |
| 1436 | fdclose(struct dev_close_args *ap) |
| 1437 | { |
| 1438 | cdev_t dev = ap->a_head.a_dev; |
| 1439 | fdu_t fdu = dkunit(dev); |
| 1440 | struct fd_data *fd; |
| 1441 | |
| 1442 | fd = devclass_get_softc(fd_devclass, fdu); |
| 1443 | fd->flags &= ~FD_OPEN; |
| 1444 | fd->options &= ~(FDOPT_NORETRY | FDOPT_NOERRLOG); |
| 1445 | |
| 1446 | return (0); |
| 1447 | } |
| 1448 | |
| 1449 | /****************************************************************************/ |
| 1450 | /* fdstrategy */ |
| 1451 | /****************************************************************************/ |
| 1452 | int |
| 1453 | fdstrategy(struct dev_strategy_args *ap) |
| 1454 | { |
| 1455 | cdev_t dev = ap->a_head.a_dev; |
| 1456 | struct bio *bio = ap->a_bio; |
| 1457 | struct buf *bp = bio->bio_buf; |
| 1458 | unsigned nblocks, blknum, cando; |
| 1459 | fdu_t fdu; |
| 1460 | fdc_p fdc; |
| 1461 | fd_p fd; |
| 1462 | size_t fdblk; |
| 1463 | |
| 1464 | fdu = dkunit(dev); |
| 1465 | fd = devclass_get_softc(fd_devclass, fdu); |
| 1466 | if (fd == 0) |
| 1467 | panic("fdstrategy: buf for nonexistent device (%#lx, %#lx)", |
| 1468 | (u_long)major(dev), (u_long)minor(dev)); |
| 1469 | fdc = fd->fdc; |
| 1470 | if (fd->type == NO_TYPE) { |
| 1471 | bp->b_error = ENXIO; |
| 1472 | bp->b_flags |= B_ERROR; |
| 1473 | goto bad; |
| 1474 | }; |
| 1475 | |
| 1476 | fdblk = 128 << (fd->ft.secsize); |
| 1477 | if (bp->b_cmd != BUF_CMD_FORMAT) { |
| 1478 | if (bio->bio_offset < 0) { |
| 1479 | kprintf( |
| 1480 | "fd%d: fdstrat: bad request offset = %"PRId64", bcount = %d\n", |
| 1481 | fdu, bio->bio_offset, bp->b_bcount); |
| 1482 | bp->b_error = EINVAL; |
| 1483 | bp->b_flags |= B_ERROR; |
| 1484 | goto bad; |
| 1485 | } |
| 1486 | if ((bp->b_bcount % fdblk) != 0) { |
| 1487 | bp->b_error = EINVAL; |
| 1488 | bp->b_flags |= B_ERROR; |
| 1489 | goto bad; |
| 1490 | } |
| 1491 | } |
| 1492 | |
| 1493 | /* |
| 1494 | * Set up block calculations. |
| 1495 | */ |
| 1496 | if (bio->bio_offset > 20000000LL * fdblk) { |
| 1497 | /* |
| 1498 | * Reject unreasonably high block number, prevent the |
| 1499 | * multiplication below from overflowing. |
| 1500 | */ |
| 1501 | bp->b_error = EINVAL; |
| 1502 | bp->b_flags |= B_ERROR; |
| 1503 | goto bad; |
| 1504 | } |
| 1505 | blknum = (unsigned)(bio->bio_offset / fdblk); |
| 1506 | nblocks = fd->ft.size; |
| 1507 | bp->b_resid = 0; |
| 1508 | if (blknum + (bp->b_bcount / fdblk) > nblocks) { |
| 1509 | if (blknum <= nblocks) { |
| 1510 | cando = (nblocks - blknum) * fdblk; |
| 1511 | bp->b_resid = bp->b_bcount - cando; |
| 1512 | if (cando == 0) |
| 1513 | goto bad; /* not actually bad but EOF */ |
| 1514 | } else { |
| 1515 | bp->b_error = EINVAL; |
| 1516 | bp->b_flags |= B_ERROR; |
| 1517 | goto bad; |
| 1518 | } |
| 1519 | } |
| 1520 | crit_enter(); |
| 1521 | bio->bio_driver_info = dev; |
| 1522 | bioqdisksort(&fdc->bio_queue, bio); |
| 1523 | callout_stop(&fd->toffhandle); |
| 1524 | |
| 1525 | /* Tell devstat we are starting on the transaction */ |
| 1526 | devstat_start_transaction(&fd->device_stats); |
| 1527 | #if 0 |
| 1528 | device_busy(fd->dev); |
| 1529 | #endif |
| 1530 | fdstart(fdc); |
| 1531 | crit_exit(); |
| 1532 | return(0); |
| 1533 | |
| 1534 | bad: |
| 1535 | biodone(bio); |
| 1536 | return(0); |
| 1537 | } |
| 1538 | |
| 1539 | /***************************************************************\ |
| 1540 | * fdstart * |
| 1541 | * We have just queued something.. if the controller is not busy * |
| 1542 | * then simulate the case where it has just finished a command * |
| 1543 | * So that it (the interrupt routine) looks on the queue for more* |
| 1544 | * work to do and picks up what we just added. * |
| 1545 | * If the controller is already busy, we need do nothing, as it * |
| 1546 | * will pick up our work when the present work completes * |
| 1547 | \***************************************************************/ |
| 1548 | static void |
| 1549 | fdstart(struct fdc_data *fdc) |
| 1550 | { |
| 1551 | crit_enter(); |
| 1552 | if(fdc->state == DEVIDLE) |
| 1553 | { |
| 1554 | fdc_intr(fdc); |
| 1555 | } |
| 1556 | crit_exit(); |
| 1557 | } |
| 1558 | |
| 1559 | static void |
| 1560 | fd_iotimeout(void *xfdc) |
| 1561 | { |
| 1562 | fdc_p fdc; |
| 1563 | |
| 1564 | fdc = xfdc; |
| 1565 | TRACE1("fd%d[fd_iotimeout()]", fdc->fdu); |
| 1566 | |
| 1567 | /* |
| 1568 | * Due to IBM's brain-dead design, the FDC has a faked ready |
| 1569 | * signal, hardwired to ready == true. Thus, any command |
| 1570 | * issued if there's no diskette in the drive will _never_ |
| 1571 | * complete, and must be aborted by resetting the FDC. |
| 1572 | * Many thanks, Big Blue! |
| 1573 | * The FDC must not be reset directly, since that would |
| 1574 | * interfere with the state machine. Instead, pretend that |
| 1575 | * the command completed but was invalid. The state machine |
| 1576 | * will reset the FDC and retry once. |
| 1577 | */ |
| 1578 | crit_enter(); |
| 1579 | fdc->status[0] = NE7_ST0_IC_IV; |
| 1580 | fdc->flags &= ~FDC_STAT_VALID; |
| 1581 | fdc->state = IOTIMEDOUT; |
| 1582 | fdc_intr(fdc); |
| 1583 | crit_exit(); |
| 1584 | } |
| 1585 | |
| 1586 | /* just ensure it is running in a critical section */ |
| 1587 | static void |
| 1588 | fd_pseudointr(void *xfdc) |
| 1589 | { |
| 1590 | crit_enter(); |
| 1591 | fdc_intr(xfdc); |
| 1592 | crit_exit(); |
| 1593 | } |
| 1594 | |
| 1595 | /***********************************************************************\ |
| 1596 | * fdintr * |
| 1597 | * keep calling the state machine until it returns a 0 * |
| 1598 | * ALWAYS called at SPLBIO * |
| 1599 | \***********************************************************************/ |
| 1600 | static void |
| 1601 | fdc_intr(void *xfdc) |
| 1602 | { |
| 1603 | fdc_p fdc = xfdc; |
| 1604 | while(fdstate(fdc)) |
| 1605 | ; |
| 1606 | } |
| 1607 | |
| 1608 | /* |
| 1609 | * magic pseudo-DMA initialization for YE FDC. Sets count and |
| 1610 | * direction |
| 1611 | */ |
| 1612 | #define SET_BCDR(fdc,wr,cnt,port) \ |
| 1613 | bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port, \ |
| 1614 | ((cnt)-1) & 0xff); \ |
| 1615 | bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port + 1, \ |
| 1616 | ((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f))); |
| 1617 | |
| 1618 | /* |
| 1619 | * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy |
| 1620 | */ |
| 1621 | static int fdcpio(fdc_p fdc, buf_cmd_t cmd, caddr_t addr, u_int count) |
| 1622 | { |
| 1623 | u_char *cptr = (u_char *)addr; |
| 1624 | |
| 1625 | if (cmd == BUF_CMD_READ) { |
| 1626 | if (fdc->state != PIOREAD) { |
| 1627 | fdc->state = PIOREAD; |
| 1628 | return(0); |
| 1629 | }; |
| 1630 | SET_BCDR(fdc, 0, count, 0); |
| 1631 | bus_space_read_multi_1(fdc->portt, fdc->porth, fdc->port_off + |
| 1632 | FDC_YE_DATAPORT, cptr, count); |
| 1633 | } else { |
| 1634 | bus_space_write_multi_1(fdc->portt, fdc->porth, fdc->port_off + |
| 1635 | FDC_YE_DATAPORT, cptr, count); |
| 1636 | SET_BCDR(fdc, 0, count, 0); |
| 1637 | }; |
| 1638 | return(1); |
| 1639 | } |
| 1640 | |
| 1641 | /***********************************************************************\ |
| 1642 | * The controller state machine. * |
| 1643 | * if it returns a non zero value, it should be called again immediatly * |
| 1644 | \***********************************************************************/ |
| 1645 | static int |
| 1646 | fdstate(fdc_p fdc) |
| 1647 | { |
| 1648 | int read, format, head, i, sec = 0, sectrac, st0, cyl, st3; |
| 1649 | unsigned blknum = 0, b_cylinder = 0; |
| 1650 | fdu_t fdu; |
| 1651 | fd_p fd; |
| 1652 | struct bio *bio; |
| 1653 | struct buf *bp; |
| 1654 | struct fd_formb *finfo = NULL; |
| 1655 | size_t fdblk; |
| 1656 | cdev_t dev; |
| 1657 | |
| 1658 | bio = fdc->bio; |
| 1659 | if (bio == NULL) { |
| 1660 | bio = bioq_first(&fdc->bio_queue); |
| 1661 | if (bio != NULL) { |
| 1662 | bioq_remove(&fdc->bio_queue, bio); |
| 1663 | fdc->bio = bio; |
| 1664 | } |
| 1665 | } |
| 1666 | if (bio == NULL) { |
| 1667 | /***********************************************\ |
| 1668 | * nothing left for this controller to do * |
| 1669 | * Force into the IDLE state, * |
| 1670 | \***********************************************/ |
| 1671 | fdc->state = DEVIDLE; |
| 1672 | if (fdc->fd) { |
| 1673 | device_printf(fdc->fdc_dev, |
| 1674 | "unexpected valid fd pointer\n"); |
| 1675 | fdc->fd = (fd_p) 0; |
| 1676 | fdc->fdu = -1; |
| 1677 | } |
| 1678 | TRACE1("[fdc%d IDLE]", fdc->fdcu); |
| 1679 | return (0); |
| 1680 | } |
| 1681 | bp = bio->bio_buf; |
| 1682 | dev = bio->bio_driver_info; |
| 1683 | |
| 1684 | fdu = dkunit(dev); |
| 1685 | fd = devclass_get_softc(fd_devclass, fdu); |
| 1686 | fdblk = 128 << fd->ft.secsize; |
| 1687 | if (fdc->fd && (fd != fdc->fd)) |
| 1688 | device_printf(fd->dev, "confused fd pointers\n"); |
| 1689 | read = (bp->b_cmd == BUF_CMD_READ); |
| 1690 | format = (bp->b_cmd == BUF_CMD_FORMAT); |
| 1691 | if (format) { |
| 1692 | finfo = (struct fd_formb *)bp->b_data; |
| 1693 | fd->skip = (char *)&(finfo->fd_formb_cylno(0)) |
| 1694 | - (char *)finfo; |
| 1695 | } |
| 1696 | if (fdc->state == DOSEEK || fdc->state == SEEKCOMPLETE) { |
| 1697 | blknum = (unsigned)(bio->bio_offset / fdblk) + |
| 1698 | fd->skip /fdblk; |
| 1699 | b_cylinder = blknum / (fd->ft.sectrac * fd->ft.heads); |
| 1700 | } |
| 1701 | TRACE1("fd%d", fdu); |
| 1702 | TRACE1("[%s]", fdstates[fdc->state]); |
| 1703 | TRACE1("(0x%x)", fd->flags); |
| 1704 | callout_reset(&fd->toffhandle, 4 * hz, fd_turnoff, fd); |
| 1705 | switch (fdc->state) |
| 1706 | { |
| 1707 | case DEVIDLE: |
| 1708 | case FINDWORK: /* we have found new work */ |
| 1709 | fdc->retry = 0; |
| 1710 | fd->skip = 0; |
| 1711 | fdc->fd = fd; |
| 1712 | fdc->fdu = fdu; |
| 1713 | fdc->fdctl_wr(fdc, fd->ft.trans); |
| 1714 | TRACE1("[0x%x->FDCTL]", fd->ft.trans); |
| 1715 | /*******************************************************\ |
| 1716 | * If the next drive has a motor startup pending, then * |
| 1717 | * it will start up in its own good time * |
| 1718 | \*******************************************************/ |
| 1719 | if(fd->flags & FD_MOTOR_WAIT) { |
| 1720 | fdc->state = MOTORWAIT; |
| 1721 | return (0); /* come back later */ |
| 1722 | } |
| 1723 | /*******************************************************\ |
| 1724 | * Maybe if it's not starting, it SHOULD be starting * |
| 1725 | \*******************************************************/ |
| 1726 | if (!(fd->flags & FD_MOTOR)) |
| 1727 | { |
| 1728 | fdc->state = MOTORWAIT; |
| 1729 | fd_turnon(fd); |
| 1730 | return (0); |
| 1731 | } |
| 1732 | else /* at least make sure we are selected */ |
| 1733 | { |
| 1734 | set_motor(fdc, fd->fdsu, TURNON); |
| 1735 | } |
| 1736 | if (fdc->flags & FDC_NEEDS_RESET) { |
| 1737 | fdc->state = RESETCTLR; |
| 1738 | fdc->flags &= ~FDC_NEEDS_RESET; |
| 1739 | } else |
| 1740 | fdc->state = DOSEEK; |
| 1741 | break; |
| 1742 | case DOSEEK: |
| 1743 | if (b_cylinder == (unsigned)fd->track) |
| 1744 | { |
| 1745 | fdc->state = SEEKCOMPLETE; |
| 1746 | break; |
| 1747 | } |
| 1748 | if (fd_cmd(fdc, 3, NE7CMD_SEEK, |
| 1749 | fd->fdsu, b_cylinder * fd->ft.steptrac, |
| 1750 | 0)) |
| 1751 | { |
| 1752 | /* |
| 1753 | * seek command not accepted, looks like |
| 1754 | * the FDC went off to the Saints... |
| 1755 | */ |
| 1756 | fdc->retry = 6; /* try a reset */ |
| 1757 | return(retrier(fdc)); |
| 1758 | } |
| 1759 | fd->track = FD_NO_TRACK; |
| 1760 | fdc->state = SEEKWAIT; |
| 1761 | return(0); /* will return later */ |
| 1762 | case SEEKWAIT: |
| 1763 | /* allow heads to settle */ |
| 1764 | callout_reset(&fdc->pseudointr_ch, hz / 16, |
| 1765 | fd_pseudointr, fdc); |
| 1766 | fdc->state = SEEKCOMPLETE; |
| 1767 | return(0); /* will return later */ |
| 1768 | case SEEKCOMPLETE : /* SEEK DONE, START DMA */ |
| 1769 | /* Make sure seek really happened*/ |
| 1770 | if(fd->track == FD_NO_TRACK) { |
| 1771 | int descyl = b_cylinder * fd->ft.steptrac; |
| 1772 | do { |
| 1773 | /* |
| 1774 | * This might be a "ready changed" interrupt, |
| 1775 | * which cannot really happen since the |
| 1776 | * RDY pin is hardwired to + 5 volts. This |
| 1777 | * generally indicates a "bouncing" intr |
| 1778 | * line, so do one of the following: |
| 1779 | * |
| 1780 | * When running on an enhanced FDC that is |
| 1781 | * known to not go stuck after responding |
| 1782 | * with INVALID, fetch all interrupt states |
| 1783 | * until seeing either an INVALID or a |
| 1784 | * real interrupt condition. |
| 1785 | * |
| 1786 | * When running on a dumb old NE765, give |
| 1787 | * up immediately. The controller will |
| 1788 | * provide up to four dummy RC interrupt |
| 1789 | * conditions right after reset (for the |
| 1790 | * corresponding four drives), so this is |
| 1791 | * our only chance to get notice that it |
| 1792 | * was not the FDC that caused the interrupt. |
| 1793 | */ |
| 1794 | if (fd_sense_int(fdc, &st0, &cyl) |
| 1795 | == FD_NOT_VALID) |
| 1796 | return 0; |
| 1797 | if(fdc->fdct == FDC_NE765 |
| 1798 | && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) |
| 1799 | return 0; /* hope for a real intr */ |
| 1800 | } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); |
| 1801 | |
| 1802 | if (0 == descyl) { |
| 1803 | int failed = 0; |
| 1804 | /* |
| 1805 | * seek to cyl 0 requested; make sure we are |
| 1806 | * really there |
| 1807 | */ |
| 1808 | if (fd_sense_drive_status(fdc, &st3)) |
| 1809 | failed = 1; |
| 1810 | if ((st3 & NE7_ST3_T0) == 0) { |
| 1811 | kprintf( |
| 1812 | "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n", |
| 1813 | fdu, st3, NE7_ST3BITS); |
| 1814 | failed = 1; |
| 1815 | } |
| 1816 | |
| 1817 | if (failed) { |
| 1818 | if(fdc->retry < 3) |
| 1819 | fdc->retry = 3; |
| 1820 | return (retrier(fdc)); |
| 1821 | } |
| 1822 | } |
| 1823 | |
| 1824 | if (cyl != descyl) { |
| 1825 | kprintf( |
| 1826 | "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n", |
| 1827 | fdu, descyl, cyl, st0); |
| 1828 | if (fdc->retry < 3) |
| 1829 | fdc->retry = 3; |
| 1830 | return (retrier(fdc)); |
| 1831 | } |
| 1832 | } |
| 1833 | |
| 1834 | fd->track = b_cylinder; |
| 1835 | if (!(fdc->flags & FDC_NODMA)) { |
| 1836 | isa_dmastart(isa_dmabp(bp), |
| 1837 | bp->b_data+fd->skip, |
| 1838 | format ? bp->b_bcount : fdblk, fdc->dmachan); |
| 1839 | } |
| 1840 | sectrac = fd->ft.sectrac; |
| 1841 | sec = blknum % (sectrac * fd->ft.heads); |
| 1842 | head = sec / sectrac; |
| 1843 | sec = sec % sectrac + 1; |
| 1844 | fd->hddrv = ((head&1)<<2)+fdu; |
| 1845 | |
| 1846 | if(format || !read) |
| 1847 | { |
| 1848 | /* make sure the drive is writable */ |
| 1849 | if(fd_sense_drive_status(fdc, &st3) != 0) |
| 1850 | { |
| 1851 | /* stuck controller? */ |
| 1852 | if (!(fdc->flags & FDC_NODMA)) |
| 1853 | isa_dmadone(isa_dmabp(bp), |
| 1854 | bp->b_data + fd->skip, |
| 1855 | format ? bp->b_bcount : fdblk, |
| 1856 | fdc->dmachan); |
| 1857 | fdc->retry = 6; /* reset the beast */ |
| 1858 | return (retrier(fdc)); |
| 1859 | } |
| 1860 | if(st3 & NE7_ST3_WP) |
| 1861 | { |
| 1862 | /* |
| 1863 | * XXX YES! this is ugly. |
| 1864 | * in order to force the current operation |
| 1865 | * to fail, we will have to fake an FDC |
| 1866 | * error - all error handling is done |
| 1867 | * by the retrier() |
| 1868 | */ |
| 1869 | fdc->status[0] = NE7_ST0_IC_AT; |
| 1870 | fdc->status[1] = NE7_ST1_NW; |
| 1871 | fdc->status[2] = 0; |
| 1872 | fdc->status[3] = fd->track; |
| 1873 | fdc->status[4] = head; |
| 1874 | fdc->status[5] = sec; |
| 1875 | fdc->retry = 8; /* break out immediately */ |
| 1876 | fdc->state = IOTIMEDOUT; /* not really... */ |
| 1877 | return (1); |
| 1878 | } |
| 1879 | } |
| 1880 | |
| 1881 | if (format) { |
| 1882 | if (fdc->flags & FDC_NODMA) { |
| 1883 | /* |
| 1884 | * This seems to be necessary for |
| 1885 | * whatever obscure reason; if we omit |
| 1886 | * it, we end up filling the sector ID |
| 1887 | * fields of the newly formatted track |
| 1888 | * entirely with garbage, causing |
| 1889 | * `wrong cylinder' errors all over |
| 1890 | * the place when trying to read them |
| 1891 | * back. |
| 1892 | * |
| 1893 | * Umpf. |
| 1894 | */ |
| 1895 | SET_BCDR(fdc, 1, bp->b_bcount, 0); |
| 1896 | |
| 1897 | (void)fdcpio(fdc,bp->b_cmd, |
| 1898 | bp->b_data+fd->skip, |
| 1899 | bp->b_bcount); |
| 1900 | |
| 1901 | } |
| 1902 | /* formatting */ |
| 1903 | if(fd_cmd(fdc, 6, NE7CMD_FORMAT, head << 2 | fdu, |
| 1904 | finfo->fd_formb_secshift, |
| 1905 | finfo->fd_formb_nsecs, |
| 1906 | finfo->fd_formb_gaplen, |
| 1907 | finfo->fd_formb_fillbyte, 0)) { |
| 1908 | /* controller fell over */ |
| 1909 | if (!(fdc->flags & FDC_NODMA)) |
| 1910 | isa_dmadone(isa_dmabp(bp), |
| 1911 | bp->b_data + fd->skip, |
| 1912 | format ? bp->b_bcount : fdblk, |
| 1913 | fdc->dmachan); |
| 1914 | fdc->retry = 6; |
| 1915 | return (retrier(fdc)); |
| 1916 | } |
| 1917 | } else { |
| 1918 | if (fdc->flags & FDC_NODMA) { |
| 1919 | /* |
| 1920 | * this seems to be necessary even when |
| 1921 | * reading data |
| 1922 | */ |
| 1923 | SET_BCDR(fdc, 1, fdblk, 0); |
| 1924 | |
| 1925 | /* |
| 1926 | * perform the write pseudo-DMA before |
| 1927 | * the WRITE command is sent |
| 1928 | */ |
| 1929 | if (!read) |
| 1930 | (void)fdcpio(fdc,bp->b_cmd, |
| 1931 | bp->b_data+fd->skip, |
| 1932 | fdblk); |
| 1933 | } |
| 1934 | if (fd_cmd(fdc, 9, |
| 1935 | (read ? NE7CMD_READ : NE7CMD_WRITE), |
| 1936 | head << 2 | fdu, /* head & unit */ |
| 1937 | fd->track, /* track */ |
| 1938 | head, |
| 1939 | sec, /* sector + 1 */ |
| 1940 | fd->ft.secsize, /* sector size */ |
| 1941 | sectrac, /* sectors/track */ |
| 1942 | fd->ft.gap, /* gap size */ |
| 1943 | fd->ft.datalen, /* data length */ |
| 1944 | 0)) { |
| 1945 | /* the beast is sleeping again */ |
| 1946 | if (!(fdc->flags & FDC_NODMA)) |
| 1947 | isa_dmadone(isa_dmabp(bp), |
| 1948 | bp->b_data + fd->skip, |
| 1949 | format ? bp->b_bcount : fdblk, |
| 1950 | fdc->dmachan); |
| 1951 | fdc->retry = 6; |
| 1952 | return (retrier(fdc)); |
| 1953 | } |
| 1954 | } |
| 1955 | if (fdc->flags & FDC_NODMA) |
| 1956 | /* |
| 1957 | * if this is a read, then simply await interrupt |
| 1958 | * before performing PIO |
| 1959 | */ |
| 1960 | if (read && !fdcpio(fdc,bp->b_cmd, |
| 1961 | bp->b_data+fd->skip,fdblk)) { |
| 1962 | callout_reset(&fd->tohandle, hz, |
| 1963 | fd_iotimeout, fdc); |
| 1964 | return(0); /* will return later */ |
| 1965 | }; |
| 1966 | |
| 1967 | /* |
| 1968 | * write (or format) operation will fall through and |
| 1969 | * await completion interrupt |
| 1970 | */ |
| 1971 | fdc->state = IOCOMPLETE; |
| 1972 | callout_reset(&fd->tohandle, hz, fd_iotimeout, fdc); |
| 1973 | return (0); /* will return later */ |
| 1974 | case PIOREAD: |
| 1975 | /* |
| 1976 | * actually perform the PIO read. The IOCOMPLETE case |
| 1977 | * removes the timeout for us. |
| 1978 | */ |
| 1979 | (void)fdcpio(fdc,bp->b_cmd,bp->b_data+fd->skip,fdblk); |
| 1980 | fdc->state = IOCOMPLETE; |
| 1981 | /* FALLTHROUGH */ |
| 1982 | case IOCOMPLETE: /* IO DONE, post-analyze */ |
| 1983 | callout_stop(&fd->tohandle); |
| 1984 | |
| 1985 | if (fd_read_status(fdc, fd->fdsu)) { |
| 1986 | if (!(fdc->flags & FDC_NODMA)) { |
| 1987 | isa_dmadone(isa_dmabp(bp), |
| 1988 | bp->b_data + fd->skip, |
| 1989 | format ? bp->b_bcount : fdblk, |
| 1990 | fdc->dmachan); |
| 1991 | } |
| 1992 | if (fdc->retry < 6) |
| 1993 | fdc->retry = 6; /* force a reset */ |
| 1994 | return (retrier(fdc)); |
| 1995 | } |
| 1996 | |
| 1997 | fdc->state = IOTIMEDOUT; |
| 1998 | |
| 1999 | /* FALLTHROUGH */ |
| 2000 | |
| 2001 | case IOTIMEDOUT: |
| 2002 | if (!(fdc->flags & FDC_NODMA)) { |
| 2003 | isa_dmadone(isa_dmabp(bp), |
| 2004 | bp->b_data + fd->skip, |
| 2005 | format ? bp->b_bcount : fdblk, fdc->dmachan); |
| 2006 | } |
| 2007 | if (fdc->status[0] & NE7_ST0_IC) { |
| 2008 | if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT |
| 2009 | && fdc->status[1] & NE7_ST1_OR) { |
| 2010 | /* |
| 2011 | * DMA overrun. Someone hogged the bus and |
| 2012 | * didn't release it in time for the next |
| 2013 | * FDC transfer. |
| 2014 | * |
| 2015 | * We normally restart this without bumping |
| 2016 | * the retry counter. However, in case |
| 2017 | * something is seriously messed up (like |
| 2018 | * broken hardware), we rather limit the |
| 2019 | * number of retries so the IO operation |
| 2020 | * doesn't block indefinately. |
| 2021 | */ |
| 2022 | if (fdc->dma_overruns++ < FDC_DMAOV_MAX) { |
| 2023 | fdc->state = SEEKCOMPLETE; |
| 2024 | return (1); |
| 2025 | } /* else fall through */ |
| 2026 | } |
| 2027 | if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV |
| 2028 | && fdc->retry < 6) |
| 2029 | fdc->retry = 6; /* force a reset */ |
| 2030 | else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT |
| 2031 | && fdc->status[2] & NE7_ST2_WC |
| 2032 | && fdc->retry < 3) |
| 2033 | fdc->retry = 3; /* force recalibrate */ |
| 2034 | return (retrier(fdc)); |
| 2035 | } |
| 2036 | /* All OK */ |
| 2037 | /* Operation successful, retry DMA overruns again next time. */ |
| 2038 | fdc->dma_overruns = 0; |
| 2039 | fd->skip += fdblk; |
| 2040 | if (!format && fd->skip < bp->b_bcount - bp->b_resid) { |
| 2041 | /* set up next transfer */ |
| 2042 | fdc->state = DOSEEK; |
| 2043 | } else { |
| 2044 | /* ALL DONE */ |
| 2045 | fd->skip = 0; |
| 2046 | fdc->bio = NULL; |
| 2047 | #if 0 |
| 2048 | device_unbusy(fd->dev); |
| 2049 | #endif |
| 2050 | devstat_end_transaction_buf(&fd->device_stats, bp); |
| 2051 | biodone(bio); |
| 2052 | fdc->fd = (fd_p) 0; |
| 2053 | fdc->fdu = -1; |
| 2054 | fdc->state = FINDWORK; |
| 2055 | } |
| 2056 | return (1); |
| 2057 | case RESETCTLR: |
| 2058 | fdc_reset(fdc); |
| 2059 | fdc->retry++; |
| 2060 | fdc->state = RESETCOMPLETE; |
| 2061 | return (0); |
| 2062 | case RESETCOMPLETE: |
| 2063 | /* |
| 2064 | * Discard all the results from the reset so that they |
| 2065 | * can't cause an unexpected interrupt later. |
| 2066 | */ |
| 2067 | for (i = 0; i < 4; i++) |
| 2068 | (void)fd_sense_int(fdc, &st0, &cyl); |
| 2069 | fdc->state = STARTRECAL; |
| 2070 | /* Fall through. */ |
| 2071 | case STARTRECAL: |
| 2072 | if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) { |
| 2073 | /* arrgl */ |
| 2074 | fdc->retry = 6; |
| 2075 | return (retrier(fdc)); |
| 2076 | } |
| 2077 | fdc->state = RECALWAIT; |
| 2078 | return (0); /* will return later */ |
| 2079 | case RECALWAIT: |
| 2080 | /* allow heads to settle */ |
| 2081 | callout_reset(&fdc->pseudointr_ch, hz / 8, fd_pseudointr, fdc); |
| 2082 | fdc->state = RECALCOMPLETE; |
| 2083 | return (0); /* will return later */ |
| 2084 | case RECALCOMPLETE: |
| 2085 | do { |
| 2086 | /* |
| 2087 | * See SEEKCOMPLETE for a comment on this: |
| 2088 | */ |
| 2089 | if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) |
| 2090 | return 0; |
| 2091 | if(fdc->fdct == FDC_NE765 |
| 2092 | && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) |
| 2093 | return 0; /* hope for a real intr */ |
| 2094 | } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); |
| 2095 | if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0) |
| 2096 | { |
| 2097 | if(fdc->retry > 3) |
| 2098 | /* |
| 2099 | * a recalibrate from beyond cylinder 77 |
| 2100 | * will "fail" due to the FDC limitations; |
| 2101 | * since people used to complain much about |
| 2102 | * the failure message, try not logging |
| 2103 | * this one if it seems to be the first |
| 2104 | * time in a line |
| 2105 | */ |
| 2106 | kprintf("fd%d: recal failed ST0 %b cyl %d\n", |
| 2107 | fdu, st0, NE7_ST0BITS, cyl); |
| 2108 | if(fdc->retry < 3) fdc->retry = 3; |
| 2109 | return (retrier(fdc)); |
| 2110 | } |
| 2111 | fd->track = 0; |
| 2112 | /* Seek (probably) necessary */ |
| 2113 | fdc->state = DOSEEK; |
| 2114 | return (1); /* will return immediatly */ |
| 2115 | case MOTORWAIT: |
| 2116 | if(fd->flags & FD_MOTOR_WAIT) |
| 2117 | { |
| 2118 | return (0); /* time's not up yet */ |
| 2119 | } |
| 2120 | if (fdc->flags & FDC_NEEDS_RESET) { |
| 2121 | fdc->state = RESETCTLR; |
| 2122 | fdc->flags &= ~FDC_NEEDS_RESET; |
| 2123 | } else { |
| 2124 | /* |
| 2125 | * If all motors were off, then the controller was |
| 2126 | * reset, so it has lost track of the current |
| 2127 | * cylinder. Recalibrate to handle this case. |
| 2128 | * But first, discard the results of the reset. |
| 2129 | */ |
| 2130 | fdc->state = RESETCOMPLETE; |
| 2131 | } |
| 2132 | return (1); /* will return immediatly */ |
| 2133 | default: |
| 2134 | device_printf(fdc->fdc_dev, "unexpected FD int->"); |
| 2135 | if (fd_read_status(fdc, fd->fdsu) == 0) |
| 2136 | kprintf("FDC status :%x %x %x %x %x %x %x ", |
| 2137 | fdc->status[0], |
| 2138 | fdc->status[1], |
| 2139 | fdc->status[2], |
| 2140 | fdc->status[3], |
| 2141 | fdc->status[4], |
| 2142 | fdc->status[5], |
| 2143 | fdc->status[6] ); |
| 2144 | else |
| 2145 | kprintf("No status available "); |
| 2146 | if (fd_sense_int(fdc, &st0, &cyl) != 0) |
| 2147 | { |
| 2148 | kprintf("[controller is dead now]\n"); |
| 2149 | return (0); |
| 2150 | } |
| 2151 | kprintf("ST0 = %x, PCN = %x\n", st0, cyl); |
| 2152 | return (0); |
| 2153 | } |
| 2154 | /*XXX confusing: some branches return immediately, others end up here*/ |
| 2155 | return (1); /* Come back immediatly to new state */ |
| 2156 | } |
| 2157 | |
| 2158 | static int |
| 2159 | retrier(struct fdc_data *fdc) |
| 2160 | { |
| 2161 | struct bio *bio; |
| 2162 | struct buf *bp; |
| 2163 | struct fd_data *fd; |
| 2164 | cdev_t dev; |
| 2165 | int fdu; |
| 2166 | |
| 2167 | bio = fdc->bio; |
| 2168 | bp = bio->bio_buf; |
| 2169 | dev = bio->bio_driver_info; |
| 2170 | |
| 2171 | /* XXX shouldn't this be cached somewhere? */ |
| 2172 | fdu = dkunit(dev); |
| 2173 | fd = devclass_get_softc(fd_devclass, fdu); |
| 2174 | if (fd->options & FDOPT_NORETRY) |
| 2175 | goto fail; |
| 2176 | |
| 2177 | switch (fdc->retry) { |
| 2178 | case 0: case 1: case 2: |
| 2179 | fdc->state = SEEKCOMPLETE; |
| 2180 | break; |
| 2181 | case 3: case 4: case 5: |
| 2182 | fdc->state = STARTRECAL; |
| 2183 | break; |
| 2184 | case 6: |
| 2185 | fdc->state = RESETCTLR; |
| 2186 | break; |
| 2187 | case 7: |
| 2188 | break; |
| 2189 | default: |
| 2190 | fail: |
| 2191 | { |
| 2192 | int printerror = (fd->options & FDOPT_NOERRLOG) == 0; |
| 2193 | |
| 2194 | if (printerror) { |
| 2195 | /* |
| 2196 | * note: use the correct device for more |
| 2197 | * verbose error reporting. |
| 2198 | */ |
| 2199 | diskerr(bio, dev, |
| 2200 | "hard error", LOG_PRINTF, |
| 2201 | fdc->fd->skip); |
| 2202 | } |
| 2203 | if (printerror) { |
| 2204 | if (fdc->flags & FDC_STAT_VALID) |
| 2205 | kprintf( |
| 2206 | " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n", |
| 2207 | fdc->status[0], NE7_ST0BITS, |
| 2208 | fdc->status[1], NE7_ST1BITS, |
| 2209 | fdc->status[2], NE7_ST2BITS, |
| 2210 | fdc->status[3], fdc->status[4], |
| 2211 | fdc->status[5]); |
| 2212 | else |
| 2213 | kprintf(" (No status)\n"); |
| 2214 | } |
| 2215 | } |
| 2216 | bp->b_flags |= B_ERROR; |
| 2217 | bp->b_error = EIO; |
| 2218 | bp->b_resid += bp->b_bcount - fdc->fd->skip; |
| 2219 | fdc->bio = NULL; |
| 2220 | fdc->fd->skip = 0; |
| 2221 | #if 0 |
| 2222 | device_unbusy(fd->dev); |
| 2223 | #endif |
| 2224 | devstat_end_transaction_buf(&fdc->fd->device_stats, bp); |
| 2225 | biodone(bio); |
| 2226 | fdc->state = FINDWORK; |
| 2227 | fdc->flags |= FDC_NEEDS_RESET; |
| 2228 | fdc->fd = (fd_p) 0; |
| 2229 | fdc->fdu = -1; |
| 2230 | return (1); |
| 2231 | } |
| 2232 | fdc->retry++; |
| 2233 | return (1); |
| 2234 | } |
| 2235 | |
| 2236 | static int |
| 2237 | fdformat(cdev_t dev, struct fd_formb *finfo, struct ucred *cred) |
| 2238 | { |
| 2239 | fdu_t fdu; |
| 2240 | fd_p fd; |
| 2241 | struct buf *bp; |
| 2242 | int rv = 0; |
| 2243 | size_t fdblk; |
| 2244 | |
| 2245 | fdu = dkunit(dev); |
| 2246 | fd = devclass_get_softc(fd_devclass, fdu); |
| 2247 | fdblk = 128 << fd->ft.secsize; |
| 2248 | |
| 2249 | /* set up a buffer header for fdstrategy() */ |
| 2250 | bp = getpbuf(NULL); |
| 2251 | bp->b_cmd = BUF_CMD_FORMAT; |
| 2252 | |
| 2253 | /* |
| 2254 | * calculate a fake blkno, so fdstrategy() would initiate a |
| 2255 | * seek to the requested cylinder |
| 2256 | */ |
| 2257 | bp->b_bio1.bio_offset = (off_t)(finfo->cyl * |
| 2258 | (fd->ft.sectrac * fd->ft.heads) |
| 2259 | + finfo->head * fd->ft.sectrac) * fdblk; |
| 2260 | bp->b_bio1.bio_driver_info = dev; |
| 2261 | bp->b_bio1.bio_flags |= BIO_SYNC; |
| 2262 | bp->b_bio1.bio_done = biodone_sync; |
| 2263 | |
| 2264 | bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; |
| 2265 | bp->b_data = (caddr_t)finfo; |
| 2266 | |
| 2267 | /* now do the format */ |
| 2268 | dev_dstrategy(dev, &bp->b_bio1); |
| 2269 | |
| 2270 | /* ...and wait for it to complete */ |
| 2271 | rv = biowait_timeout(&bp->b_bio1, "fdform", 20 * hz); |
| 2272 | if (rv == EWOULDBLOCK) { |
| 2273 | /* timed out */ |
| 2274 | rv = EIO; |
| 2275 | #if 0 |
| 2276 | device_unbusy(fd->dev); |
| 2277 | #endif |
| 2278 | biodone(&bp->b_bio1); |
| 2279 | } |
| 2280 | if (bp->b_flags & B_ERROR) |
| 2281 | rv = bp->b_error; |
| 2282 | /* |
| 2283 | * allow the process to be swapped |
| 2284 | */ |
| 2285 | relpbuf(bp, NULL); |
| 2286 | return rv; |
| 2287 | } |
| 2288 | |
| 2289 | /* |
| 2290 | * TODO: don't allocate buffer on stack. |
| 2291 | */ |
| 2292 | |
| 2293 | static int |
| 2294 | fdioctl(struct dev_ioctl_args *ap) |
| 2295 | { |
| 2296 | cdev_t dev = ap->a_head.a_dev; |
| 2297 | fdu_t fdu = dkunit(dev); |
| 2298 | fd_p fd = devclass_get_softc(fd_devclass, fdu); |
| 2299 | struct fdc_status *fsp; |
| 2300 | int error = 0; |
| 2301 | |
| 2302 | switch (ap->a_cmd) { |
| 2303 | case FD_FORM: |
| 2304 | if ((ap->a_fflag & FWRITE) == 0) |
| 2305 | error = EBADF; /* must be opened for writing */ |
| 2306 | else if (((struct fd_formb *)ap->a_data)->format_version != |
| 2307 | FD_FORMAT_VERSION) |
| 2308 | error = EINVAL; /* wrong version of formatting prog */ |
| 2309 | else |
| 2310 | error = fdformat(dev, (struct fd_formb *)ap->a_data, ap->a_cred); |
| 2311 | break; |
| 2312 | |
| 2313 | case FD_GTYPE: /* get drive type */ |
| 2314 | *(struct fd_type *)ap->a_data = fd->ft; |
| 2315 | break; |
| 2316 | |
| 2317 | case FD_STYPE: /* set drive type */ |
| 2318 | /* this is considered harmful; only allow for superuser */ |
| 2319 | if (priv_check_cred(ap->a_cred, PRIV_ROOT, 0) != 0) |
| 2320 | return EPERM; |
| 2321 | fd->ft = *(struct fd_type *)ap->a_data; |
| 2322 | break; |
| 2323 | |
| 2324 | case FD_GOPTS: /* get drive options */ |
| 2325 | *(int *)ap->a_data = fd->options; |
| 2326 | break; |
| 2327 | |
| 2328 | case FD_SOPTS: /* set drive options */ |
| 2329 | fd->options = *(int *)ap->a_data; |
| 2330 | break; |
| 2331 | |
| 2332 | case FD_GSTAT: |
| 2333 | fsp = (struct fdc_status *)ap->a_data; |
| 2334 | if ((fd->fdc->flags & FDC_STAT_VALID) == 0) |
| 2335 | return EINVAL; |
| 2336 | memcpy(fsp->status, fd->fdc->status, 7 * sizeof(u_int)); |
| 2337 | break; |
| 2338 | |
| 2339 | default: |
| 2340 | error = ENOTTY; |
| 2341 | break; |
| 2342 | } |
| 2343 | return (error); |
| 2344 | } |
| 2345 | |
| 2346 | /* |
| 2347 | * Hello emacs, these are the |
| 2348 | * Local Variables: |
| 2349 | * c-indent-level: 8 |
| 2350 | * c-continued-statement-offset: 8 |
| 2351 | * c-continued-brace-offset: 0 |
| 2352 | * c-brace-offset: -8 |
| 2353 | * c-brace-imaginary-offset: 0 |
| 2354 | * c-argdecl-indent: 8 |
| 2355 | * c-label-offset: -8 |
| 2356 | * c++-hanging-braces: 1 |
| 2357 | * c++-access-specifier-offset: -8 |
| 2358 | * c++-empty-arglist-indent: 8 |
| 2359 | * c++-friend-offset: 0 |
| 2360 | * End: |
| 2361 | */ |