54 */ 55 56#include "opt_fdc.h" 57#include "card.h" 58 59#include <sys/param.h> 60#include <sys/systm.h> 61#include <sys/bio.h> 62#include <sys/bus.h> 63#include <sys/conf.h> 64#include <sys/devicestat.h> 65#include <sys/disk.h> 66#include <sys/fcntl.h> 67#include <sys/fdcio.h> 68#include <sys/filio.h> 69#include <sys/kernel.h> 70#include <sys/lock.h> 71#include <sys/malloc.h> 72#include <sys/module.h> 73#include <sys/mutex.h> 74#include <sys/proc.h> 75#include <sys/syslog.h> 76 77#include <machine/bus.h> 78#include <sys/rman.h> 79 80#include <machine/clock.h> 81#include <machine/resource.h> 82#include <machine/stdarg.h> 83 84#include <isa/isavar.h> 85#ifdef PC98 86#include <pc98/pc98/pc98.h> 87#include <pc98/pc98/pc98_machdep.h> 88#include <pc98/pc98/epsonio.h> 89#include <pc98/pc98/fdreg.h> 90#else 91#include <isa/isareg.h> 92#include <isa/fdreg.h> 93#include <isa/rtc.h> 94#endif 95 96enum fdc_type 97{ 98 FDC_NE765, FDC_ENHANCED, FDC_UNKNOWN = -1 99}; 100 101enum fdc_states { 102 DEVIDLE, 103 FINDWORK, 104 DOSEEK, 105 SEEKCOMPLETE , 106 IOCOMPLETE, 107 RECALCOMPLETE, 108 STARTRECAL, 109 RESETCTLR, 110 SEEKWAIT, 111 RECALWAIT, 112 MOTORWAIT, 113 IOTIMEDOUT, 114 RESETCOMPLETE, 115 PIOREAD 116}; 117 118#ifdef FDC_DEBUG 119static char const * const fdstates[] = { 120 "DEVIDLE", 121 "FINDWORK", 122 "DOSEEK", 123 "SEEKCOMPLETE", 124 "IOCOMPLETE", 125 "RECALCOMPLETE", 126 "STARTRECAL", 127 "RESETCTLR", 128 "SEEKWAIT", 129 "RECALWAIT", 130 "MOTORWAIT", 131 "IOTIMEDOUT", 132 "RESETCOMPLETE", 133 "PIOREAD" 134}; 135#endif 136 137/* 138 * Per controller structure (softc). 139 */ 140struct fdc_data 141{ 142 int fdcu; /* our unit number */ 143 int dmachan; 144 int flags; 145#define FDC_ATTACHED 0x01 146#define FDC_STAT_VALID 0x08 147#define FDC_HAS_FIFO 0x10 148#define FDC_NEEDS_RESET 0x20 149#define FDC_NODMA 0x40 150#define FDC_ISPNP 0x80 151#define FDC_ISPCMCIA 0x100 152 struct fd_data *fd; 153 int fdu; /* the active drive */ 154 enum fdc_states state; 155 int retry; 156#ifndef PC98 157 int fdout; /* mirror of the w/o digital output reg */ 158#endif 159 u_int status[7]; /* copy of the registers */ 160 enum fdc_type fdct; /* chip version of FDC */ 161 int fdc_errs; /* number of logged errors */ 162 int dma_overruns; /* number of DMA overruns */ 163 struct bio_queue_head head; 164 struct bio *bp; /* active buffer */ 165#ifdef PC98 166 struct resource *res_ioport, *res_fdsio, *res_fdemsio; 167 struct resource *res_irq, *res_drq; 168 int rid_ioport, rid_irq, rid_drq; 169#else 170 struct resource *res_ioport, *res_ctl, *res_irq, *res_drq; 171 int rid_ioport, rid_ctl, rid_irq, rid_drq; 172#endif 173 int port_off; 174 bus_space_tag_t portt; 175 bus_space_handle_t porth; 176#ifdef PC98 177 bus_space_tag_t sc_fdsiot; 178 bus_space_handle_t sc_fdsioh; 179 bus_space_tag_t sc_fdemsiot; 180 bus_space_handle_t sc_fdemsioh; 181#else 182 bus_space_tag_t ctlt; 183 bus_space_handle_t ctlh; 184#endif 185 void *fdc_intr; 186 struct device *fdc_dev; 187#ifndef PC98 188 void (*fdctl_wr)(struct fdc_data *fdc, u_int8_t v); 189#endif 190}; 191 192#define FDBIO_FORMAT BIO_CMD2 193 194typedef int fdu_t; 195typedef int fdcu_t; 196typedef int fdsu_t; 197typedef struct fd_data *fd_p; 198typedef struct fdc_data *fdc_p; 199typedef enum fdc_type fdc_t; 200 201#define FDUNIT(s) (((s) >> 6) & 3) 202#define FDNUMTOUNIT(n) (((n) & 3) << 6) 203#define FDTYPE(s) ((s) & 0x3f) 204 205/* 206 * fdc maintains a set (1!) of ivars per child of each controller. 207 */ 208enum fdc_device_ivars { 209 FDC_IVAR_FDUNIT, 210}; 211 212/* 213 * Simple access macros for the ivars. 214 */ 215#define FDC_ACCESSOR(A, B, T) \ 216static __inline T fdc_get_ ## A(device_t dev) \ 217{ \ 218 uintptr_t v; \ 219 BUS_READ_IVAR(device_get_parent(dev), dev, FDC_IVAR_ ## B, &v); \ 220 return (T) v; \ 221} 222FDC_ACCESSOR(fdunit, FDUNIT, int) 223 224/* configuration flags for fdc */ 225#define FDC_NO_FIFO (1 << 2) /* do not enable FIFO */ 226 227/* error returns for fd_cmd() */ 228#define FD_FAILED -1 229#define FD_NOT_VALID -2 230#define FDC_ERRMAX 100 /* do not log more */ 231/* 232 * Stop retrying after this many DMA overruns. Since each retry takes 233 * one revolution, with 300 rpm., 25 retries take approximately 5 234 * seconds which the read attempt will block in case the DMA overrun 235 * is persistent. 236 */ 237#define FDC_DMAOV_MAX 25 238 239/* 240 * Timeout value for the PIO loops to wait until the FDC main status 241 * register matches our expectations (request for master, direction 242 * bit). This is supposed to be a number of microseconds, although 243 * timing might actually not be very accurate. 244 * 245 * Timeouts of 100 msec are believed to be required for some broken 246 * (old) hardware. 247 */ 248#define FDSTS_TIMEOUT 100000 249 250/* 251 * Number of subdevices that can be used for different density types. 252 * By now, the lower 6 bit of the minor number are reserved for this, 253 * allowing for up to 64 subdevices, but we only use 16 out of this. 254 * Density #0 is used for automatic format detection, the other 255 * densities are available as programmable densities (for assignment 256 * by fdcontrol(8)). 257 * The upper 2 bits of the minor number are reserved for the subunit 258 * (drive #) per controller. 259 */ 260#ifdef PC98 261#define NUMDENS 12 262#else 263#define NUMDENS 16 264#endif 265 266#define FDBIO_RDSECTID BIO_CMD1 267 268/* 269 * List of native drive densities. Order must match enum fd_drivetype 270 * in <sys/fdcio.h>. Upon attaching the drive, each of the 271 * programmable subdevices is initialized with the native density 272 * definition. 273 */ 274#ifdef PC98 275static struct fd_type fd_native_types[] = 276{ 277{ 0 }, /* FDT_NONE */ 278{ 0 }, /* FDT_360K */ 279{ 15,2,0xFF,0x1B,80,2400,0,2,0x54,1,0,0 }, /* FDT_12M */ 280{ 0 }, /* FDT_720K */ 281{ 18,2,0xFF,0x1B,80,2880,2,2,0x54,1,0,0 }, /* FDT_144M */ 282{ 0 }, /* FDT_288M */ 283}; 284 285static struct fd_type fd_searchlist_12m[] = { 286{ 15,2,0xFF,0x1B,80,2400,0,2,0x54,1,0,0 }, /* 1.2M */ 287{ 10,2,0xFF,0x10,82,1640,1,2,0x30,1,0,0 }, /* 820K */ 288{ 10,2,0xFF,0x10,80,1600,1,2,0x30,1,0,0 }, /* 800K */ 289{ 9,2,0xFF,0x20,80,1440,1,2,0x50,1,0,0 }, /* 720K */ 290{ 9,2,0xFF,0x20,40, 720,1,2,0x50,1,0,FL_2STEP },/* 360K */ 291{ 8,2,0xFF,0x2A,80,1280,1,2,0x50,1,0,0 }, /* 640K */ 292{ 8,3,0xFF,0x35,77,1232,0,2,0x74,1,0,0 }, /* 1.23M 1024/sec */ 293 294{ 8,3,0xFF,0x35,80,1280,0,2,0x74,1,0,0 }, /* 1.28M 1024/sec */ 295}; 296static struct fd_type fd_searchlist_144m[] = { 297{ 21,2,0xFF,0x04,82,3444,2,2,0x0C,2,0,0 }, /* 1.72M in 3mode */ 298{ 18,2,0xFF,0x1B,82,2952,2,2,0x54,1,0,0 }, /* 1.48M in 3mode */ 299{ 18,2,0xFF,0x1B,80,2880,2,2,0x54,1,0,0 }, /* 1.44M in 3mode */ 300{ 15,2,0xFF,0x1B,80,2400,0,2,0x54,1,0,0 }, /* 1.2M */ 301{ 10,2,0xFF,0x10,82,1640,1,2,0x30,1,0,0 }, /* 820K */ 302{ 10,2,0xFF,0x10,80,1600,1,2,0x30,1,0,0 }, /* 800K */ 303{ 9,2,0xFF,0x20,80,1440,1,2,0x50,1,0,0 }, /* 720K */ 304{ 9,2,0xFF,0x20,40, 720,1,2,0x50,1,0,FL_2STEP },/* 360K */ 305{ 8,2,0xFF,0x2A,80,1280,1,2,0x50,1,0,0 }, /* 640K */ 306{ 8,3,0xFF,0x35,77,1232,0,2,0x74,1,0,0 }, /* 1.23M 1024/sec */ 307 308{ 8,3,0xFF,0x35,80,1280,0,2,0x74,1,0,0 }, /* 1.28M 1024/sec */ 309{ 9,3,0xFF,0x35,82,1476,0,2,0x47,1,0,0 }, /* 1.48M 1024/sec 9sec */ 310#if 0 311{ 10,3,0xFF,0x1B,82,1640,2,2,0x54,1,0,0 }, /* 1.64M in 3mode - Reserve */ 312#endif 313}; 314#else /* PC98 */ 315static struct fd_type fd_native_types[] = 316{ 317{ 0 }, /* FDT_NONE */ 318{ 9,2,0xFF,0x2A,40, 720,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* FDT_360K */ 319{ 15,2,0xFF,0x1B,80,2400,FDC_500KBPS,2,0x54,1,0,FL_MFM }, /* FDT_12M */ 320{ 9,2,0xFF,0x20,80,1440,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* FDT_720K */ 321{ 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* FDT_144M */ 322#if 0 /* we currently don't handle 2.88 MB */ 323{ 36,2,0xFF,0x1B,80,5760,FDC_1MBPS, 2,0x4C,1,1,FL_MFM|FL_PERPND } /*FDT_288M*/ 324#else 325{ 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* FDT_144M */ 326#endif 327}; 328 329/* 330 * 360 KB 5.25" and 720 KB 3.5" drives don't have automatic density 331 * selection, they just start out with their native density (or lose). 332 * So 1.2 MB 5.25", 1.44 MB 3.5", and 2.88 MB 3.5" drives have their 333 * respective lists of densities to search for. 334 */ 335static struct fd_type fd_searchlist_12m[] = { 336{ 15,2,0xFF,0x1B,80,2400,FDC_500KBPS,2,0x54,1,0,FL_MFM }, /* 1.2M */ 337{ 9,2,0xFF,0x23,40, 720,FDC_300KBPS,2,0x50,1,0,FL_MFM|FL_2STEP }, /* 360K */ 338{ 9,2,0xFF,0x20,80,1440,FDC_300KBPS,2,0x50,1,0,FL_MFM }, /* 720K */ 339}; 340 341static struct fd_type fd_searchlist_144m[] = { 342{ 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* 1.44M */ 343{ 9,2,0xFF,0x20,80,1440,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* 720K */ 344}; 345 346/* We search for 1.44M first since this is the most common case. */ 347static struct fd_type fd_searchlist_288m[] = { 348{ 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* 1.44M */ 349#if 0 350{ 36,2,0xFF,0x1B,80,5760,FDC_1MBPS, 2,0x4C,1,1,FL_MFM|FL_PERPND } /* 2.88M */ 351#endif 352{ 9,2,0xFF,0x20,80,1440,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* 720K */ 353}; 354#endif /* PC98 */ 355 356#define MAX_SEC_SIZE (128 << 3) 357#define MAX_CYLINDER 85 /* some people really stress their drives 358 * up to cyl 82 */ 359#define MAX_HEAD 1 360 361static devclass_t fdc_devclass; 362 363/* 364 * Per drive structure (softc). 365 */ 366struct fd_data { 367 struct fdc_data *fdc; /* pointer to controller structure */ 368 int fdsu; /* this units number on this controller */ 369 enum fd_drivetype type; /* drive type */ 370 struct fd_type *ft; /* pointer to current type descriptor */ 371 struct fd_type fts[NUMDENS]; /* type descriptors */ 372 int flags; 373#define FD_OPEN 0x01 /* it's open */ 374#define FD_NONBLOCK 0x02 /* O_NONBLOCK set */ 375#define FD_ACTIVE 0x04 /* it's active */ 376#define FD_MOTOR 0x08 /* motor should be on */ 377#define FD_MOTOR_WAIT 0x10 /* motor coming up */ 378#define FD_UA 0x20 /* force unit attention */ 379 int skip; 380 int hddrv; 381#define FD_NO_TRACK -2 382 int track; /* where we think the head is */ 383 int options; /* user configurable options, see fdcio.h */ 384 struct callout_handle toffhandle; 385 struct callout_handle tohandle; 386 struct devstat device_stats; 387 eventhandler_tag clonetag; 388 dev_t masterdev; 389 dev_t clonedevs[NUMDENS - 1]; 390 device_t dev; 391 fdu_t fdu; 392#ifdef PC98 393 int pc98_trans; 394#endif 395}; 396 397#ifdef PC98 398static bus_addr_t fdc_iat[] = {0, 2, 4}; 399#endif 400 401struct fdc_ivars { 402 int fdunit; 403}; 404static devclass_t fd_devclass; 405 406/* configuration flags for fd */ 407#define FD_TYPEMASK 0x0f /* drive type, matches enum 408 * fd_drivetype; on i386 machines, if 409 * given as 0, use RTC type for fd0 410 * and fd1 */ 411#define FD_DTYPE(flags) ((flags) & FD_TYPEMASK) 412#define FD_NO_CHLINE 0x10 /* drive does not support changeline 413 * aka. unit attention */ 414#define FD_NO_PROBE 0x20 /* don't probe drive (seek test), just 415 * assume it is there */ 416 417#ifdef EPSON_NRDISK 418typedef unsigned int nrd_t; 419 420#define P_NRD_ADDRH 0xc24 421#define P_NRD_ADDRM 0xc22 422#define P_NRD_ADDRL 0xc20 423#define P_NRD_CHECK 0xc20 424#define P_NRD_DATA 0xc26 425#define P_NRD_LED 0xc36 426#define B_NRD_CHK 0x80 427#define B_NRD_LED 0x40 428#define A_NRD_INFO 0x2 429#define A_NRD_BASE 0x400 430#define NRD_STATUS 0x0 431#define NRD_ST0_HD 0x04 432 433static fdu_t nrdu=-1; 434static int nrdsec=0; 435static nrd_t nrdblkn=0; 436static nrd_t nrdaddr=0x0; 437 438#define nrd_check_ready() ({ \ 439 (epson_inb(P_NRD_CHECK) & B_NRD_CHK) ? 0 : 1; \ 440 }) 441#define nrd_LED_on() epson_outb(P_NRD_LED, B_NRD_LED) 442#define nrd_LED_off() epson_outb(P_NRD_LED, ~B_NRD_LED) 443#define nrd_trac() ((int)(nrd_info(nrdaddr) & 0xff)) 444#define nrd_head() ((int)((nrd_info(nrdaddr) >> 8) & 0xff)) 445#define nrd_sec() ((int)(nrd_info(nrdaddr + 2) & 0xff)) 446#define nrd_secsize() ((int)((nrd_info(A_NRD_INFO) >> 8) & 0xff)) 447#define nrd_addrset(p) nrd_addr((nrd_t)((nrd_t)p+A_NRD_BASE)) 448 449static inline void 450nrd_addr(addr) 451 nrd_t addr; 452{ 453 epson_outb(P_NRD_ADDRH, (u_char)((addr >> 16) & 0x1f)); 454 epson_outb(P_NRD_ADDRM, (u_char)((addr >> 8) & 0xff)); 455 epson_outb(P_NRD_ADDRL, (u_char)(addr & 0xff)); 456} 457 458static inline u_short 459nrd_info(addr) 460 nrd_t addr; 461{ 462 nrd_addr(addr); 463 return (epson_inw(P_NRD_DATA)); 464} 465#endif /* EPSON_NRDISK */ 466 467/* 468 * Throughout this file the following conventions will be used: 469 * 470 * fd is a pointer to the fd_data struct for the drive in question 471 * fdc is a pointer to the fdc_data struct for the controller 472 * fdu is the floppy drive unit number 473 * fdcu is the floppy controller unit number 474 * fdsu is the floppy drive unit number on that controller. (sub-unit) 475 */ 476 477/* 478 * Function declarations, same (chaotic) order as they appear in the 479 * file. Re-ordering is too late now, it would only obfuscate the 480 * diffs against old and offspring versions (like the PC98 one). 481 * 482 * Anyone adding functions here, please keep this sequence the same 483 * as below -- makes locating a particular function in the body much 484 * easier. 485 */ 486#ifndef PC98 487static void fdout_wr(fdc_p, u_int8_t); 488#endif 489static u_int8_t fdsts_rd(fdc_p); 490static void fddata_wr(fdc_p, u_int8_t); 491static u_int8_t fddata_rd(fdc_p); 492#ifndef PC98 493static void fdctl_wr_isa(fdc_p, u_int8_t); 494#if NCARD > 0 495static void fdctl_wr_pcmcia(fdc_p, u_int8_t); 496#endif 497#if 0 498static u_int8_t fdin_rd(fdc_p); 499#endif 500#endif /* PC98 */ 501static int fdc_err(struct fdc_data *, const char *); 502static int fd_cmd(struct fdc_data *, int, ...); 503static int enable_fifo(fdc_p fdc); 504static int fd_sense_drive_status(fdc_p, int *); 505static int fd_sense_int(fdc_p, int *, int *); 506static int fd_read_status(fdc_p); 507static int fdc_alloc_resources(struct fdc_data *); 508static void fdc_release_resources(struct fdc_data *); 509static int fdc_read_ivar(device_t, device_t, int, uintptr_t *); 510static int fdc_probe(device_t); 511#if NCARD > 0 512static int fdc_pccard_probe(device_t); 513#endif 514static int fdc_detach(device_t dev); 515static void fdc_add_child(device_t, const char *, int); 516static int fdc_attach(device_t); 517static int fdc_print_child(device_t, device_t); 518static void fd_clone (void *, char *, int, dev_t *); 519static int fd_probe(device_t); 520static int fd_attach(device_t); 521static int fd_detach(device_t); 522static void set_motor(struct fdc_data *, int, int); 523# define TURNON 1 524# define TURNOFF 0 525static timeout_t fd_turnoff; 526static timeout_t fd_motor_on; 527static void fd_turnon(struct fd_data *); 528static void fdc_reset(fdc_p); 529static int fd_in(struct fdc_data *, int *); 530static int out_fdc(struct fdc_data *, int); 531/* 532 * The open function is named Fdopen() to avoid confusion with fdopen() 533 * in fd(4). The difference is now only meaningful for debuggers. 534 */ 535static d_open_t Fdopen; 536static d_close_t fdclose; 537static d_strategy_t fdstrategy; 538static void fdstart(struct fdc_data *); 539static timeout_t fd_iotimeout; 540static timeout_t fd_pseudointr; 541static driver_intr_t fdc_intr; 542static int fdcpio(fdc_p, long, caddr_t, u_int); 543static int fdautoselect(dev_t); 544static int fdstate(struct fdc_data *); 545static int retrier(struct fdc_data *); 546static void fdbiodone(struct bio *); 547static int fdmisccmd(dev_t, u_int, void *); 548static d_ioctl_t fdioctl; 549 550static int fifo_threshold = 8; /* XXX: should be accessible via sysctl */ 551 552#ifdef FDC_DEBUG 553/* CAUTION: fd_debug causes huge amounts of logging output */ 554static int volatile fd_debug = 0; 555#define TRACE0(arg) do { if (fd_debug) printf(arg); } while (0) 556#define TRACE1(arg1, arg2) do { if (fd_debug) printf(arg1, arg2); } while (0) 557#else /* FDC_DEBUG */ 558#define TRACE0(arg) do { } while (0) 559#define TRACE1(arg1, arg2) do { } while (0) 560#endif /* FDC_DEBUG */ 561 562/* 563 * Bus space handling (access to low-level IO). 564 */ 565#ifndef PC98 566static void 567fdout_wr(fdc_p fdc, u_int8_t v) 568{ 569 bus_space_write_1(fdc->portt, fdc->porth, FDOUT+fdc->port_off, v); 570} 571#endif 572 573static u_int8_t 574fdsts_rd(fdc_p fdc) 575{ 576 return bus_space_read_1(fdc->portt, fdc->porth, FDSTS+fdc->port_off); 577} 578 579static void 580fddata_wr(fdc_p fdc, u_int8_t v) 581{ 582 bus_space_write_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off, v); 583} 584 585static u_int8_t 586fddata_rd(fdc_p fdc) 587{ 588 return bus_space_read_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off); 589} 590 591#ifdef PC98 592static void 593fdctl_wr(fdc_p fdc, u_int8_t v) 594{ 595 bus_space_write_1(fdc->portt, fdc->porth, FDCTL, v); 596} 597#endif 598 599#ifndef PC98 600static void 601fdctl_wr_isa(fdc_p fdc, u_int8_t v) 602{ 603 bus_space_write_1(fdc->ctlt, fdc->ctlh, 0, v); 604} 605 606#if NCARD > 0 607static void 608fdctl_wr_pcmcia(fdc_p fdc, u_int8_t v) 609{ 610 bus_space_write_1(fdc->portt, fdc->porth, FDCTL+fdc->port_off, v); 611} 612#endif 613 614static u_int8_t 615fdin_rd(fdc_p fdc) 616{ 617 return bus_space_read_1(fdc->portt, fdc->porth, FDIN); 618} 619#endif /* PC98 */ 620 621#define CDEV_MAJOR 9 622static struct cdevsw fd_cdevsw = {
| 54 */ 55 56#include "opt_fdc.h" 57#include "card.h" 58 59#include <sys/param.h> 60#include <sys/systm.h> 61#include <sys/bio.h> 62#include <sys/bus.h> 63#include <sys/conf.h> 64#include <sys/devicestat.h> 65#include <sys/disk.h> 66#include <sys/fcntl.h> 67#include <sys/fdcio.h> 68#include <sys/filio.h> 69#include <sys/kernel.h> 70#include <sys/lock.h> 71#include <sys/malloc.h> 72#include <sys/module.h> 73#include <sys/mutex.h> 74#include <sys/proc.h> 75#include <sys/syslog.h> 76 77#include <machine/bus.h> 78#include <sys/rman.h> 79 80#include <machine/clock.h> 81#include <machine/resource.h> 82#include <machine/stdarg.h> 83 84#include <isa/isavar.h> 85#ifdef PC98 86#include <pc98/pc98/pc98.h> 87#include <pc98/pc98/pc98_machdep.h> 88#include <pc98/pc98/epsonio.h> 89#include <pc98/pc98/fdreg.h> 90#else 91#include <isa/isareg.h> 92#include <isa/fdreg.h> 93#include <isa/rtc.h> 94#endif 95 96enum fdc_type 97{ 98 FDC_NE765, FDC_ENHANCED, FDC_UNKNOWN = -1 99}; 100 101enum fdc_states { 102 DEVIDLE, 103 FINDWORK, 104 DOSEEK, 105 SEEKCOMPLETE , 106 IOCOMPLETE, 107 RECALCOMPLETE, 108 STARTRECAL, 109 RESETCTLR, 110 SEEKWAIT, 111 RECALWAIT, 112 MOTORWAIT, 113 IOTIMEDOUT, 114 RESETCOMPLETE, 115 PIOREAD 116}; 117 118#ifdef FDC_DEBUG 119static char const * const fdstates[] = { 120 "DEVIDLE", 121 "FINDWORK", 122 "DOSEEK", 123 "SEEKCOMPLETE", 124 "IOCOMPLETE", 125 "RECALCOMPLETE", 126 "STARTRECAL", 127 "RESETCTLR", 128 "SEEKWAIT", 129 "RECALWAIT", 130 "MOTORWAIT", 131 "IOTIMEDOUT", 132 "RESETCOMPLETE", 133 "PIOREAD" 134}; 135#endif 136 137/* 138 * Per controller structure (softc). 139 */ 140struct fdc_data 141{ 142 int fdcu; /* our unit number */ 143 int dmachan; 144 int flags; 145#define FDC_ATTACHED 0x01 146#define FDC_STAT_VALID 0x08 147#define FDC_HAS_FIFO 0x10 148#define FDC_NEEDS_RESET 0x20 149#define FDC_NODMA 0x40 150#define FDC_ISPNP 0x80 151#define FDC_ISPCMCIA 0x100 152 struct fd_data *fd; 153 int fdu; /* the active drive */ 154 enum fdc_states state; 155 int retry; 156#ifndef PC98 157 int fdout; /* mirror of the w/o digital output reg */ 158#endif 159 u_int status[7]; /* copy of the registers */ 160 enum fdc_type fdct; /* chip version of FDC */ 161 int fdc_errs; /* number of logged errors */ 162 int dma_overruns; /* number of DMA overruns */ 163 struct bio_queue_head head; 164 struct bio *bp; /* active buffer */ 165#ifdef PC98 166 struct resource *res_ioport, *res_fdsio, *res_fdemsio; 167 struct resource *res_irq, *res_drq; 168 int rid_ioport, rid_irq, rid_drq; 169#else 170 struct resource *res_ioport, *res_ctl, *res_irq, *res_drq; 171 int rid_ioport, rid_ctl, rid_irq, rid_drq; 172#endif 173 int port_off; 174 bus_space_tag_t portt; 175 bus_space_handle_t porth; 176#ifdef PC98 177 bus_space_tag_t sc_fdsiot; 178 bus_space_handle_t sc_fdsioh; 179 bus_space_tag_t sc_fdemsiot; 180 bus_space_handle_t sc_fdemsioh; 181#else 182 bus_space_tag_t ctlt; 183 bus_space_handle_t ctlh; 184#endif 185 void *fdc_intr; 186 struct device *fdc_dev; 187#ifndef PC98 188 void (*fdctl_wr)(struct fdc_data *fdc, u_int8_t v); 189#endif 190}; 191 192#define FDBIO_FORMAT BIO_CMD2 193 194typedef int fdu_t; 195typedef int fdcu_t; 196typedef int fdsu_t; 197typedef struct fd_data *fd_p; 198typedef struct fdc_data *fdc_p; 199typedef enum fdc_type fdc_t; 200 201#define FDUNIT(s) (((s) >> 6) & 3) 202#define FDNUMTOUNIT(n) (((n) & 3) << 6) 203#define FDTYPE(s) ((s) & 0x3f) 204 205/* 206 * fdc maintains a set (1!) of ivars per child of each controller. 207 */ 208enum fdc_device_ivars { 209 FDC_IVAR_FDUNIT, 210}; 211 212/* 213 * Simple access macros for the ivars. 214 */ 215#define FDC_ACCESSOR(A, B, T) \ 216static __inline T fdc_get_ ## A(device_t dev) \ 217{ \ 218 uintptr_t v; \ 219 BUS_READ_IVAR(device_get_parent(dev), dev, FDC_IVAR_ ## B, &v); \ 220 return (T) v; \ 221} 222FDC_ACCESSOR(fdunit, FDUNIT, int) 223 224/* configuration flags for fdc */ 225#define FDC_NO_FIFO (1 << 2) /* do not enable FIFO */ 226 227/* error returns for fd_cmd() */ 228#define FD_FAILED -1 229#define FD_NOT_VALID -2 230#define FDC_ERRMAX 100 /* do not log more */ 231/* 232 * Stop retrying after this many DMA overruns. Since each retry takes 233 * one revolution, with 300 rpm., 25 retries take approximately 5 234 * seconds which the read attempt will block in case the DMA overrun 235 * is persistent. 236 */ 237#define FDC_DMAOV_MAX 25 238 239/* 240 * Timeout value for the PIO loops to wait until the FDC main status 241 * register matches our expectations (request for master, direction 242 * bit). This is supposed to be a number of microseconds, although 243 * timing might actually not be very accurate. 244 * 245 * Timeouts of 100 msec are believed to be required for some broken 246 * (old) hardware. 247 */ 248#define FDSTS_TIMEOUT 100000 249 250/* 251 * Number of subdevices that can be used for different density types. 252 * By now, the lower 6 bit of the minor number are reserved for this, 253 * allowing for up to 64 subdevices, but we only use 16 out of this. 254 * Density #0 is used for automatic format detection, the other 255 * densities are available as programmable densities (for assignment 256 * by fdcontrol(8)). 257 * The upper 2 bits of the minor number are reserved for the subunit 258 * (drive #) per controller. 259 */ 260#ifdef PC98 261#define NUMDENS 12 262#else 263#define NUMDENS 16 264#endif 265 266#define FDBIO_RDSECTID BIO_CMD1 267 268/* 269 * List of native drive densities. Order must match enum fd_drivetype 270 * in <sys/fdcio.h>. Upon attaching the drive, each of the 271 * programmable subdevices is initialized with the native density 272 * definition. 273 */ 274#ifdef PC98 275static struct fd_type fd_native_types[] = 276{ 277{ 0 }, /* FDT_NONE */ 278{ 0 }, /* FDT_360K */ 279{ 15,2,0xFF,0x1B,80,2400,0,2,0x54,1,0,0 }, /* FDT_12M */ 280{ 0 }, /* FDT_720K */ 281{ 18,2,0xFF,0x1B,80,2880,2,2,0x54,1,0,0 }, /* FDT_144M */ 282{ 0 }, /* FDT_288M */ 283}; 284 285static struct fd_type fd_searchlist_12m[] = { 286{ 15,2,0xFF,0x1B,80,2400,0,2,0x54,1,0,0 }, /* 1.2M */ 287{ 10,2,0xFF,0x10,82,1640,1,2,0x30,1,0,0 }, /* 820K */ 288{ 10,2,0xFF,0x10,80,1600,1,2,0x30,1,0,0 }, /* 800K */ 289{ 9,2,0xFF,0x20,80,1440,1,2,0x50,1,0,0 }, /* 720K */ 290{ 9,2,0xFF,0x20,40, 720,1,2,0x50,1,0,FL_2STEP },/* 360K */ 291{ 8,2,0xFF,0x2A,80,1280,1,2,0x50,1,0,0 }, /* 640K */ 292{ 8,3,0xFF,0x35,77,1232,0,2,0x74,1,0,0 }, /* 1.23M 1024/sec */ 293 294{ 8,3,0xFF,0x35,80,1280,0,2,0x74,1,0,0 }, /* 1.28M 1024/sec */ 295}; 296static struct fd_type fd_searchlist_144m[] = { 297{ 21,2,0xFF,0x04,82,3444,2,2,0x0C,2,0,0 }, /* 1.72M in 3mode */ 298{ 18,2,0xFF,0x1B,82,2952,2,2,0x54,1,0,0 }, /* 1.48M in 3mode */ 299{ 18,2,0xFF,0x1B,80,2880,2,2,0x54,1,0,0 }, /* 1.44M in 3mode */ 300{ 15,2,0xFF,0x1B,80,2400,0,2,0x54,1,0,0 }, /* 1.2M */ 301{ 10,2,0xFF,0x10,82,1640,1,2,0x30,1,0,0 }, /* 820K */ 302{ 10,2,0xFF,0x10,80,1600,1,2,0x30,1,0,0 }, /* 800K */ 303{ 9,2,0xFF,0x20,80,1440,1,2,0x50,1,0,0 }, /* 720K */ 304{ 9,2,0xFF,0x20,40, 720,1,2,0x50,1,0,FL_2STEP },/* 360K */ 305{ 8,2,0xFF,0x2A,80,1280,1,2,0x50,1,0,0 }, /* 640K */ 306{ 8,3,0xFF,0x35,77,1232,0,2,0x74,1,0,0 }, /* 1.23M 1024/sec */ 307 308{ 8,3,0xFF,0x35,80,1280,0,2,0x74,1,0,0 }, /* 1.28M 1024/sec */ 309{ 9,3,0xFF,0x35,82,1476,0,2,0x47,1,0,0 }, /* 1.48M 1024/sec 9sec */ 310#if 0 311{ 10,3,0xFF,0x1B,82,1640,2,2,0x54,1,0,0 }, /* 1.64M in 3mode - Reserve */ 312#endif 313}; 314#else /* PC98 */ 315static struct fd_type fd_native_types[] = 316{ 317{ 0 }, /* FDT_NONE */ 318{ 9,2,0xFF,0x2A,40, 720,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* FDT_360K */ 319{ 15,2,0xFF,0x1B,80,2400,FDC_500KBPS,2,0x54,1,0,FL_MFM }, /* FDT_12M */ 320{ 9,2,0xFF,0x20,80,1440,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* FDT_720K */ 321{ 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* FDT_144M */ 322#if 0 /* we currently don't handle 2.88 MB */ 323{ 36,2,0xFF,0x1B,80,5760,FDC_1MBPS, 2,0x4C,1,1,FL_MFM|FL_PERPND } /*FDT_288M*/ 324#else 325{ 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* FDT_144M */ 326#endif 327}; 328 329/* 330 * 360 KB 5.25" and 720 KB 3.5" drives don't have automatic density 331 * selection, they just start out with their native density (or lose). 332 * So 1.2 MB 5.25", 1.44 MB 3.5", and 2.88 MB 3.5" drives have their 333 * respective lists of densities to search for. 334 */ 335static struct fd_type fd_searchlist_12m[] = { 336{ 15,2,0xFF,0x1B,80,2400,FDC_500KBPS,2,0x54,1,0,FL_MFM }, /* 1.2M */ 337{ 9,2,0xFF,0x23,40, 720,FDC_300KBPS,2,0x50,1,0,FL_MFM|FL_2STEP }, /* 360K */ 338{ 9,2,0xFF,0x20,80,1440,FDC_300KBPS,2,0x50,1,0,FL_MFM }, /* 720K */ 339}; 340 341static struct fd_type fd_searchlist_144m[] = { 342{ 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* 1.44M */ 343{ 9,2,0xFF,0x20,80,1440,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* 720K */ 344}; 345 346/* We search for 1.44M first since this is the most common case. */ 347static struct fd_type fd_searchlist_288m[] = { 348{ 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* 1.44M */ 349#if 0 350{ 36,2,0xFF,0x1B,80,5760,FDC_1MBPS, 2,0x4C,1,1,FL_MFM|FL_PERPND } /* 2.88M */ 351#endif 352{ 9,2,0xFF,0x20,80,1440,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* 720K */ 353}; 354#endif /* PC98 */ 355 356#define MAX_SEC_SIZE (128 << 3) 357#define MAX_CYLINDER 85 /* some people really stress their drives 358 * up to cyl 82 */ 359#define MAX_HEAD 1 360 361static devclass_t fdc_devclass; 362 363/* 364 * Per drive structure (softc). 365 */ 366struct fd_data { 367 struct fdc_data *fdc; /* pointer to controller structure */ 368 int fdsu; /* this units number on this controller */ 369 enum fd_drivetype type; /* drive type */ 370 struct fd_type *ft; /* pointer to current type descriptor */ 371 struct fd_type fts[NUMDENS]; /* type descriptors */ 372 int flags; 373#define FD_OPEN 0x01 /* it's open */ 374#define FD_NONBLOCK 0x02 /* O_NONBLOCK set */ 375#define FD_ACTIVE 0x04 /* it's active */ 376#define FD_MOTOR 0x08 /* motor should be on */ 377#define FD_MOTOR_WAIT 0x10 /* motor coming up */ 378#define FD_UA 0x20 /* force unit attention */ 379 int skip; 380 int hddrv; 381#define FD_NO_TRACK -2 382 int track; /* where we think the head is */ 383 int options; /* user configurable options, see fdcio.h */ 384 struct callout_handle toffhandle; 385 struct callout_handle tohandle; 386 struct devstat device_stats; 387 eventhandler_tag clonetag; 388 dev_t masterdev; 389 dev_t clonedevs[NUMDENS - 1]; 390 device_t dev; 391 fdu_t fdu; 392#ifdef PC98 393 int pc98_trans; 394#endif 395}; 396 397#ifdef PC98 398static bus_addr_t fdc_iat[] = {0, 2, 4}; 399#endif 400 401struct fdc_ivars { 402 int fdunit; 403}; 404static devclass_t fd_devclass; 405 406/* configuration flags for fd */ 407#define FD_TYPEMASK 0x0f /* drive type, matches enum 408 * fd_drivetype; on i386 machines, if 409 * given as 0, use RTC type for fd0 410 * and fd1 */ 411#define FD_DTYPE(flags) ((flags) & FD_TYPEMASK) 412#define FD_NO_CHLINE 0x10 /* drive does not support changeline 413 * aka. unit attention */ 414#define FD_NO_PROBE 0x20 /* don't probe drive (seek test), just 415 * assume it is there */ 416 417#ifdef EPSON_NRDISK 418typedef unsigned int nrd_t; 419 420#define P_NRD_ADDRH 0xc24 421#define P_NRD_ADDRM 0xc22 422#define P_NRD_ADDRL 0xc20 423#define P_NRD_CHECK 0xc20 424#define P_NRD_DATA 0xc26 425#define P_NRD_LED 0xc36 426#define B_NRD_CHK 0x80 427#define B_NRD_LED 0x40 428#define A_NRD_INFO 0x2 429#define A_NRD_BASE 0x400 430#define NRD_STATUS 0x0 431#define NRD_ST0_HD 0x04 432 433static fdu_t nrdu=-1; 434static int nrdsec=0; 435static nrd_t nrdblkn=0; 436static nrd_t nrdaddr=0x0; 437 438#define nrd_check_ready() ({ \ 439 (epson_inb(P_NRD_CHECK) & B_NRD_CHK) ? 0 : 1; \ 440 }) 441#define nrd_LED_on() epson_outb(P_NRD_LED, B_NRD_LED) 442#define nrd_LED_off() epson_outb(P_NRD_LED, ~B_NRD_LED) 443#define nrd_trac() ((int)(nrd_info(nrdaddr) & 0xff)) 444#define nrd_head() ((int)((nrd_info(nrdaddr) >> 8) & 0xff)) 445#define nrd_sec() ((int)(nrd_info(nrdaddr + 2) & 0xff)) 446#define nrd_secsize() ((int)((nrd_info(A_NRD_INFO) >> 8) & 0xff)) 447#define nrd_addrset(p) nrd_addr((nrd_t)((nrd_t)p+A_NRD_BASE)) 448 449static inline void 450nrd_addr(addr) 451 nrd_t addr; 452{ 453 epson_outb(P_NRD_ADDRH, (u_char)((addr >> 16) & 0x1f)); 454 epson_outb(P_NRD_ADDRM, (u_char)((addr >> 8) & 0xff)); 455 epson_outb(P_NRD_ADDRL, (u_char)(addr & 0xff)); 456} 457 458static inline u_short 459nrd_info(addr) 460 nrd_t addr; 461{ 462 nrd_addr(addr); 463 return (epson_inw(P_NRD_DATA)); 464} 465#endif /* EPSON_NRDISK */ 466 467/* 468 * Throughout this file the following conventions will be used: 469 * 470 * fd is a pointer to the fd_data struct for the drive in question 471 * fdc is a pointer to the fdc_data struct for the controller 472 * fdu is the floppy drive unit number 473 * fdcu is the floppy controller unit number 474 * fdsu is the floppy drive unit number on that controller. (sub-unit) 475 */ 476 477/* 478 * Function declarations, same (chaotic) order as they appear in the 479 * file. Re-ordering is too late now, it would only obfuscate the 480 * diffs against old and offspring versions (like the PC98 one). 481 * 482 * Anyone adding functions here, please keep this sequence the same 483 * as below -- makes locating a particular function in the body much 484 * easier. 485 */ 486#ifndef PC98 487static void fdout_wr(fdc_p, u_int8_t); 488#endif 489static u_int8_t fdsts_rd(fdc_p); 490static void fddata_wr(fdc_p, u_int8_t); 491static u_int8_t fddata_rd(fdc_p); 492#ifndef PC98 493static void fdctl_wr_isa(fdc_p, u_int8_t); 494#if NCARD > 0 495static void fdctl_wr_pcmcia(fdc_p, u_int8_t); 496#endif 497#if 0 498static u_int8_t fdin_rd(fdc_p); 499#endif 500#endif /* PC98 */ 501static int fdc_err(struct fdc_data *, const char *); 502static int fd_cmd(struct fdc_data *, int, ...); 503static int enable_fifo(fdc_p fdc); 504static int fd_sense_drive_status(fdc_p, int *); 505static int fd_sense_int(fdc_p, int *, int *); 506static int fd_read_status(fdc_p); 507static int fdc_alloc_resources(struct fdc_data *); 508static void fdc_release_resources(struct fdc_data *); 509static int fdc_read_ivar(device_t, device_t, int, uintptr_t *); 510static int fdc_probe(device_t); 511#if NCARD > 0 512static int fdc_pccard_probe(device_t); 513#endif 514static int fdc_detach(device_t dev); 515static void fdc_add_child(device_t, const char *, int); 516static int fdc_attach(device_t); 517static int fdc_print_child(device_t, device_t); 518static void fd_clone (void *, char *, int, dev_t *); 519static int fd_probe(device_t); 520static int fd_attach(device_t); 521static int fd_detach(device_t); 522static void set_motor(struct fdc_data *, int, int); 523# define TURNON 1 524# define TURNOFF 0 525static timeout_t fd_turnoff; 526static timeout_t fd_motor_on; 527static void fd_turnon(struct fd_data *); 528static void fdc_reset(fdc_p); 529static int fd_in(struct fdc_data *, int *); 530static int out_fdc(struct fdc_data *, int); 531/* 532 * The open function is named Fdopen() to avoid confusion with fdopen() 533 * in fd(4). The difference is now only meaningful for debuggers. 534 */ 535static d_open_t Fdopen; 536static d_close_t fdclose; 537static d_strategy_t fdstrategy; 538static void fdstart(struct fdc_data *); 539static timeout_t fd_iotimeout; 540static timeout_t fd_pseudointr; 541static driver_intr_t fdc_intr; 542static int fdcpio(fdc_p, long, caddr_t, u_int); 543static int fdautoselect(dev_t); 544static int fdstate(struct fdc_data *); 545static int retrier(struct fdc_data *); 546static void fdbiodone(struct bio *); 547static int fdmisccmd(dev_t, u_int, void *); 548static d_ioctl_t fdioctl; 549 550static int fifo_threshold = 8; /* XXX: should be accessible via sysctl */ 551 552#ifdef FDC_DEBUG 553/* CAUTION: fd_debug causes huge amounts of logging output */ 554static int volatile fd_debug = 0; 555#define TRACE0(arg) do { if (fd_debug) printf(arg); } while (0) 556#define TRACE1(arg1, arg2) do { if (fd_debug) printf(arg1, arg2); } while (0) 557#else /* FDC_DEBUG */ 558#define TRACE0(arg) do { } while (0) 559#define TRACE1(arg1, arg2) do { } while (0) 560#endif /* FDC_DEBUG */ 561 562/* 563 * Bus space handling (access to low-level IO). 564 */ 565#ifndef PC98 566static void 567fdout_wr(fdc_p fdc, u_int8_t v) 568{ 569 bus_space_write_1(fdc->portt, fdc->porth, FDOUT+fdc->port_off, v); 570} 571#endif 572 573static u_int8_t 574fdsts_rd(fdc_p fdc) 575{ 576 return bus_space_read_1(fdc->portt, fdc->porth, FDSTS+fdc->port_off); 577} 578 579static void 580fddata_wr(fdc_p fdc, u_int8_t v) 581{ 582 bus_space_write_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off, v); 583} 584 585static u_int8_t 586fddata_rd(fdc_p fdc) 587{ 588 return bus_space_read_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off); 589} 590 591#ifdef PC98 592static void 593fdctl_wr(fdc_p fdc, u_int8_t v) 594{ 595 bus_space_write_1(fdc->portt, fdc->porth, FDCTL, v); 596} 597#endif 598 599#ifndef PC98 600static void 601fdctl_wr_isa(fdc_p fdc, u_int8_t v) 602{ 603 bus_space_write_1(fdc->ctlt, fdc->ctlh, 0, v); 604} 605 606#if NCARD > 0 607static void 608fdctl_wr_pcmcia(fdc_p fdc, u_int8_t v) 609{ 610 bus_space_write_1(fdc->portt, fdc->porth, FDCTL+fdc->port_off, v); 611} 612#endif 613 614static u_int8_t 615fdin_rd(fdc_p fdc) 616{ 617 return bus_space_read_1(fdc->portt, fdc->porth, FDIN); 618} 619#endif /* PC98 */ 620 621#define CDEV_MAJOR 9 622static struct cdevsw fd_cdevsw = {
|
636}; 637 638/* 639 * Auxiliary functions. Well, some only. Others are scattered 640 * throughout the entire file. 641 */ 642static int 643fdc_err(struct fdc_data *fdc, const char *s) 644{ 645 fdc->fdc_errs++; 646 if (s) { 647 if (fdc->fdc_errs < FDC_ERRMAX) 648 device_printf(fdc->fdc_dev, "%s", s); 649 else if (fdc->fdc_errs == FDC_ERRMAX) 650 device_printf(fdc->fdc_dev, "too many errors, not " 651 "logging any more\n"); 652 } 653 654 return FD_FAILED; 655} 656 657/* 658 * fd_cmd: Send a command to the chip. Takes a varargs with this structure: 659 * Unit number, 660 * # of output bytes, output bytes as ints ..., 661 * # of input bytes, input bytes as ints ... 662 */ 663static int 664fd_cmd(struct fdc_data *fdc, int n_out, ...) 665{ 666 u_char cmd; 667 int n_in; 668 int n; 669 va_list ap; 670 671 va_start(ap, n_out); 672 cmd = (u_char)(va_arg(ap, int)); 673 va_end(ap); 674 va_start(ap, n_out); 675 for (n = 0; n < n_out; n++) 676 { 677 if (out_fdc(fdc, va_arg(ap, int)) < 0) 678 { 679 char msg[50]; 680 snprintf(msg, sizeof(msg), 681 "cmd %x failed at out byte %d of %d\n", 682 cmd, n + 1, n_out); 683 return fdc_err(fdc, msg); 684 } 685 } 686 n_in = va_arg(ap, int); 687 for (n = 0; n < n_in; n++) 688 { 689 int *ptr = va_arg(ap, int *); 690 if (fd_in(fdc, ptr) < 0) 691 { 692 char msg[50]; 693 snprintf(msg, sizeof(msg), 694 "cmd %02x failed at in byte %d of %d\n", 695 cmd, n + 1, n_in); 696 return fdc_err(fdc, msg); 697 } 698 } 699 700 return 0; 701} 702 703static int 704enable_fifo(fdc_p fdc) 705{ 706 int i, j; 707 708 if ((fdc->flags & FDC_HAS_FIFO) == 0) { 709 710 /* 711 * Cannot use fd_cmd the normal way here, since 712 * this might be an invalid command. Thus we send the 713 * first byte, and check for an early turn of data directon. 714 */ 715 716 if (out_fdc(fdc, I8207X_CONFIGURE) < 0) 717 return fdc_err(fdc, "Enable FIFO failed\n"); 718 719 /* If command is invalid, return */ 720 j = FDSTS_TIMEOUT; 721 while ((i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM)) 722 != NE7_RQM && j-- > 0) { 723 if (i == (NE7_DIO | NE7_RQM)) { 724 fdc_reset(fdc); 725 return FD_FAILED; 726 } 727 DELAY(1); 728 } 729 if (j<0 || 730 fd_cmd(fdc, 3, 731 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) { 732 fdc_reset(fdc); 733 return fdc_err(fdc, "Enable FIFO failed\n"); 734 } 735 fdc->flags |= FDC_HAS_FIFO; 736 return 0; 737 } 738 if (fd_cmd(fdc, 4, 739 I8207X_CONFIGURE, 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) 740 return fdc_err(fdc, "Re-enable FIFO failed\n"); 741 return 0; 742} 743 744static int 745fd_sense_drive_status(fdc_p fdc, int *st3p) 746{ 747 int st3; 748 749 if (fd_cmd(fdc, 2, NE7CMD_SENSED, fdc->fdu, 1, &st3)) 750 { 751 return fdc_err(fdc, "Sense Drive Status failed\n"); 752 } 753 if (st3p) 754 *st3p = st3; 755 756 return 0; 757} 758 759static int 760fd_sense_int(fdc_p fdc, int *st0p, int *cylp) 761{ 762 int cyl, st0, ret; 763 764#ifdef EPSON_NRDISK 765 if (fdc->fdu == nrdu) { 766 if (fdc->fd->track >= 0) nrdaddr = (fdc->fd->track + 1) * 8; 767 else nrdaddr = 0x0; 768 *st0p = nrd_head() ? NRD_ST0_HD : NRD_STATUS; 769 *cylp = nrd_trac(); 770 } 771 else { 772#endif /* EPSON_NRDISK */ 773 ret = fd_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0); 774 if (ret) { 775 (void)fdc_err(fdc, 776 "sense intr err reading stat reg 0\n"); 777 return ret; 778 } 779 780 if (st0p) 781 *st0p = st0; 782 783 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) { 784 /* 785 * There doesn't seem to have been an interrupt. 786 */ 787 return FD_NOT_VALID; 788 } 789 790 if (fd_in(fdc, &cyl) < 0) { 791 return fdc_err(fdc, "can't get cyl num\n"); 792 } 793 794 if (cylp) 795 *cylp = cyl; 796 797#ifdef EPSON_NRDISK 798 } 799#endif /* EPSON_NRDISK */ 800 return 0; 801} 802 803 804static int 805fd_read_status(fdc_p fdc) 806{ 807 int i, ret; 808 809 for (i = ret = 0; i < 7; i++) { 810 /* 811 * XXX types are poorly chosen. Only bytes can be read 812 * from the hardware, but fdc->status[] wants u_ints and 813 * fd_in() gives ints. 814 */ 815 int status; 816 817#ifdef EPSON_NRDISK 818 if (fdc->fdu == nrdu) { 819 switch (i) { 820 case 0: fdc->status[i] = nrd_head() 821 ? NRD_ST0_HD : NRD_STATUS; break; 822 case 1: fdc->status[i] = NRD_STATUS; break; 823 case 2: fdc->status[i] = NRD_STATUS; break; 824 case 3: fdc->status[i] = nrd_trac(); break; 825 case 4: fdc->status[i] = nrd_head(); break; 826 case 5: fdc->status[i] = nrdsec; break; 827 case 6: fdc->status[i] = nrd_secsize(); break; 828 } 829 ret = 0; 830 } 831 else { 832#endif /* EPSON_NRDISK */ 833 ret = fd_in(fdc, &status); 834 fdc->status[i] = status; 835 if (ret != 0) 836 break; 837#ifdef EPSON_NRDISK 838 } 839#endif /* EPSON_NRDISK */ 840 } 841 842 if (ret == 0) 843 fdc->flags |= FDC_STAT_VALID; 844 else 845 fdc->flags &= ~FDC_STAT_VALID; 846 847 return ret; 848} 849 850#ifdef PC98 851static int pc98_trans = 0; /* 0 : HD , 1 : DD , 2 : 1.44 */ 852static int pc98_trans_prev = 0; 853 854static void set_density(fdc_p fdc) 855{ 856 /* always motor on */ 857 bus_space_write_1(fdc->sc_fdsiot, fdc->sc_fdsioh, 0, 858 (pc98_trans != 1 ? FDP_FDDEXC : 0) | FDP_PORTEXC); 859 DELAY(100); 860 fdctl_wr(fdc, FDC_RST | FDC_DMAE); 861 /* in the case of note W, always inhibit 100ms timer */ 862} 863 864static int pc98_fd_check_ready(fdu_t fdu) 865{ 866 fd_p fd = devclass_get_softc(fd_devclass, fdu); 867 struct fdc_data *fdc = fd->fdc; 868 int retry = 0, status; 869 870#ifdef EPSON_NRDISK 871 if (fdu == nrdu) { 872 if (nrd_check_ready()) return 0; 873 else return -1; 874 } 875#endif 876 while (retry++ < 30000) { 877 set_motor(fdc, fd->fdsu, TURNON); 878 out_fdc(fdc, NE7CMD_SENSED); /* Sense Drive Status */ 879 DELAY(100); 880 out_fdc(fdc, fdu); /* Drive number */ 881 DELAY(100); 882 if ((fd_in(fdc, &status) == 0) && (status & NE7_ST3_RD)) { 883 fdctl_wr(fdc, FDC_DMAE | FDC_MTON); 884 DELAY(10); 885 return 0; 886 } 887 } 888 return -1; 889} 890#endif /* PC98 */ 891 892static int 893fdc_alloc_resources(struct fdc_data *fdc) 894{ 895 device_t dev; 896#ifdef PC98 897 int rid; 898#else 899 int ispnp, ispcmcia, nports; 900#endif 901 902 dev = fdc->fdc_dev; 903#ifndef PC98 904 ispnp = (fdc->flags & FDC_ISPNP) != 0; 905 ispcmcia = (fdc->flags & FDC_ISPCMCIA) != 0; 906#endif 907 fdc->rid_ioport = fdc->rid_irq = fdc->rid_drq = 0; 908 fdc->res_ioport = fdc->res_irq = fdc->res_drq = 0; 909 910#ifdef PC98 911 fdc->res_ioport = isa_alloc_resourcev(dev, SYS_RES_IOPORT, 912 &fdc->rid_ioport, fdc_iat, 913 3, RF_ACTIVE); 914 if (fdc->res_ioport == 0) { 915 device_printf(dev, "cannot reserve I/O port range\n"); 916 return ENXIO; 917 } 918 isa_load_resourcev(fdc->res_ioport, fdc_iat, 3); 919#else 920 /* 921 * On standard ISA, we don't just use an 8 port range 922 * (e.g. 0x3f0-0x3f7) since that covers an IDE control 923 * register at 0x3f6. 924 * 925 * Isn't PC hardware wonderful. 926 * 927 * The Y-E Data PCMCIA FDC doesn't have this problem, it 928 * uses the register with offset 6 for pseudo-DMA, and the 929 * one with offset 7 as control register. 930 */ 931 nports = ispcmcia ? 8 : (ispnp ? 1 : 6); 932 fdc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT, 933 &fdc->rid_ioport, 0ul, ~0ul, 934 nports, RF_ACTIVE); 935 if (fdc->res_ioport == 0) { 936 device_printf(dev, "cannot reserve I/O port range (%d ports)\n", 937 nports); 938 return ENXIO; 939 } 940#endif 941 fdc->portt = rman_get_bustag(fdc->res_ioport); 942 fdc->porth = rman_get_bushandle(fdc->res_ioport); 943 944#ifdef PC98 945 rid = 3; 946 bus_set_resource(dev, SYS_RES_IOPORT, rid, IO_FDPORT, 1); 947 fdc->res_fdsio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 948 1, RF_ACTIVE); 949 if (fdc->res_fdsio == 0) 950 return ENXIO; 951 fdc->sc_fdsiot = rman_get_bustag(fdc->res_fdsio); 952 fdc->sc_fdsioh = rman_get_bushandle(fdc->res_fdsio); 953 954 rid = 4; 955 bus_set_resource(dev, SYS_RES_IOPORT, rid, 0x4be, 1); 956 fdc->res_fdemsio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 957 1, RF_ACTIVE); 958 if (fdc->res_fdemsio == 0) 959 return ENXIO; 960 fdc->sc_fdemsiot = rman_get_bustag(fdc->res_fdemsio); 961 fdc->sc_fdemsioh = rman_get_bushandle(fdc->res_fdemsio); 962#endif 963 964#ifndef PC98 965 if (!ispcmcia) { 966 /* 967 * Some BIOSen report the device at 0x3f2-0x3f5,0x3f7 968 * and some at 0x3f0-0x3f5,0x3f7. We detect the former 969 * by checking the size and adjust the port address 970 * accordingly. 971 */ 972 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 0) == 4) 973 fdc->port_off = -2; 974 975 /* 976 * Register the control port range as rid 1 if it 977 * isn't there already. Most PnP BIOSen will have 978 * already done this but non-PnP configurations don't. 979 * 980 * And some (!!) report 0x3f2-0x3f5 and completely 981 * leave out the control register! It seems that some 982 * non-antique controller chips have a different 983 * method of programming the transfer speed which 984 * doesn't require the control register, but it's 985 * mighty bogus as the chip still responds to the 986 * address for the control register. 987 */ 988 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 1) == 0) { 989 u_long ctlstart; 990 991 /* Find the control port, usually 0x3f7 */ 992 ctlstart = rman_get_start(fdc->res_ioport) + 993 fdc->port_off + 7; 994 995 bus_set_resource(dev, SYS_RES_IOPORT, 1, ctlstart, 1); 996 } 997 998 /* 999 * Now (finally!) allocate the control port. 1000 */ 1001 fdc->rid_ctl = 1; 1002 fdc->res_ctl = bus_alloc_resource(dev, SYS_RES_IOPORT, 1003 &fdc->rid_ctl, 1004 0ul, ~0ul, 1, RF_ACTIVE); 1005 if (fdc->res_ctl == 0) { 1006 device_printf(dev, 1007 "cannot reserve control I/O port range (control port)\n"); 1008 return ENXIO; 1009 } 1010 fdc->ctlt = rman_get_bustag(fdc->res_ctl); 1011 fdc->ctlh = rman_get_bushandle(fdc->res_ctl); 1012 } 1013#endif 1014 1015 fdc->res_irq = bus_alloc_resource(dev, SYS_RES_IRQ, 1016 &fdc->rid_irq, 0ul, ~0ul, 1, 1017 RF_ACTIVE); 1018 if (fdc->res_irq == 0) { 1019 device_printf(dev, "cannot reserve interrupt line\n"); 1020 return ENXIO; 1021 } 1022 1023 if ((fdc->flags & FDC_NODMA) == 0) { 1024 fdc->res_drq = bus_alloc_resource(dev, SYS_RES_DRQ, 1025 &fdc->rid_drq, 0ul, ~0ul, 1, 1026 RF_ACTIVE); 1027 if (fdc->res_drq == 0) { 1028 device_printf(dev, "cannot reserve DMA request line\n"); 1029 return ENXIO; 1030 } 1031 fdc->dmachan = fdc->res_drq->r_start; 1032 } 1033 1034 return 0; 1035} 1036 1037static void 1038fdc_release_resources(struct fdc_data *fdc) 1039{ 1040 device_t dev; 1041 1042 dev = fdc->fdc_dev; 1043 if (fdc->res_irq != 0) { 1044 bus_deactivate_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 1045 fdc->res_irq); 1046 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 1047 fdc->res_irq); 1048 } 1049#ifndef PC98 1050 if (fdc->res_ctl != 0) { 1051 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 1052 fdc->res_ctl); 1053 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 1054 fdc->res_ctl); 1055 } 1056#endif 1057#ifdef PC98 1058 if (fdc->res_fdsio != 0) { 1059 bus_deactivate_resource(dev, SYS_RES_IOPORT, 3, 1060 fdc->res_fdsio); 1061 bus_release_resource(dev, SYS_RES_IOPORT, 3, fdc->res_fdsio); 1062 } 1063 if (fdc->res_fdemsio != 0) { 1064 bus_deactivate_resource(dev, SYS_RES_IOPORT, 4, 1065 fdc->res_fdemsio); 1066 bus_release_resource(dev, SYS_RES_IOPORT, 4, fdc->res_fdemsio); 1067 } 1068#endif 1069 if (fdc->res_ioport != 0) { 1070 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 1071 fdc->res_ioport); 1072 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 1073 fdc->res_ioport); 1074 } 1075 if (fdc->res_drq != 0) { 1076 bus_deactivate_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 1077 fdc->res_drq); 1078 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 1079 fdc->res_drq); 1080 } 1081} 1082 1083/* 1084 * Configuration/initialization stuff, per controller. 1085 */ 1086 1087static struct isa_pnp_id fdc_ids[] = { 1088 {0x0007d041, "PC standard floppy disk controller"}, /* PNP0700 */ 1089 {0x0107d041, "Standard floppy controller supporting MS Device Bay Spec"}, /* PNP0701 */ 1090 {0} 1091}; 1092 1093static int 1094fdc_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 1095{ 1096 struct fdc_ivars *ivars = device_get_ivars(child); 1097 1098 switch (which) { 1099 case FDC_IVAR_FDUNIT: 1100 *result = ivars->fdunit; 1101 break; 1102 default: 1103 return ENOENT; 1104 } 1105 return 0; 1106} 1107 1108static int 1109fdc_probe(device_t dev) 1110{ 1111#ifdef PC98 1112 int error; 1113#else 1114 int error, ic_type; 1115#endif 1116 struct fdc_data *fdc; 1117 1118 fdc = device_get_softc(dev); 1119 bzero(fdc, sizeof *fdc); 1120 fdc->fdc_dev = dev; 1121#ifndef PC98 1122 fdc->fdctl_wr = fdctl_wr_isa; 1123#endif 1124 1125 /* Check pnp ids */ 1126 error = ISA_PNP_PROBE(device_get_parent(dev), dev, fdc_ids); 1127 if (error == ENXIO) 1128 return ENXIO; 1129 if (error == 0) 1130 fdc->flags |= FDC_ISPNP; 1131 1132 /* Attempt to allocate our resources for the duration of the probe */ 1133 error = fdc_alloc_resources(fdc); 1134 if (error) 1135 goto out; 1136 1137#ifndef PC98 1138 /* First - lets reset the floppy controller */ 1139 fdout_wr(fdc, 0); 1140 DELAY(100); 1141 fdout_wr(fdc, FDO_FRST); 1142#endif 1143 1144 /* see if it can handle a command */ 1145#ifdef PC98 1146 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(4, 240), 1147 NE7_SPEC_2(2, 0), 0)) { 1148 error = ENXIO; 1149 goto out; 1150 } 1151#else 1152 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 1153 NE7_SPEC_2(2, 0), 0)) { 1154 error = ENXIO; 1155 goto out; 1156 } 1157#endif 1158 1159#ifndef PC98 1160 if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) { 1161 ic_type = (u_char)ic_type; 1162 switch (ic_type) { 1163 case 0x80: 1164 device_set_desc(dev, "NEC 765 or clone"); 1165 fdc->fdct = FDC_NE765; 1166 break; 1167 case 0x81: /* not mentioned in any hardware doc */ 1168 case 0x90: 1169 device_set_desc(dev, 1170 "Enhanced floppy controller (i82077, NE72065 or clone)"); 1171 fdc->fdct = FDC_ENHANCED; 1172 break; 1173 default: 1174 device_set_desc(dev, "Generic floppy controller"); 1175 fdc->fdct = FDC_UNKNOWN; 1176 break; 1177 } 1178 } 1179#endif 1180 1181out: 1182 fdc_release_resources(fdc); 1183 return (error); 1184} 1185 1186#if NCARD > 0 1187 1188static int 1189fdc_pccard_probe(device_t dev) 1190{ 1191 int error; 1192 struct fdc_data *fdc; 1193 1194 fdc = device_get_softc(dev); 1195 bzero(fdc, sizeof *fdc); 1196 fdc->fdc_dev = dev; 1197#ifndef PC98 1198 fdc->fdctl_wr = fdctl_wr_pcmcia; 1199#endif 1200 1201 fdc->flags |= FDC_ISPCMCIA | FDC_NODMA; 1202 1203 /* Attempt to allocate our resources for the duration of the probe */ 1204 error = fdc_alloc_resources(fdc); 1205 if (error) 1206 goto out; 1207 1208#ifndef PC98 1209 /* First - lets reset the floppy controller */ 1210 fdout_wr(fdc, 0); 1211 DELAY(100); 1212 fdout_wr(fdc, FDO_FRST); 1213#endif 1214 1215 /* see if it can handle a command */ 1216#ifdef PC98 1217 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(4, 240), 1218 NE7_SPEC_2(2, 0), 0)) { 1219 error = ENXIO; 1220 goto out; 1221 } 1222#else 1223 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 1224 NE7_SPEC_2(2, 0), 0)) { 1225 error = ENXIO; 1226 goto out; 1227 } 1228#endif 1229 1230 device_set_desc(dev, "Y-E Data PCMCIA floppy"); 1231 fdc->fdct = FDC_NE765; 1232 1233out: 1234 fdc_release_resources(fdc); 1235 return (error); 1236} 1237 1238#endif /* NCARD > 0 */ 1239 1240static int 1241fdc_detach(device_t dev) 1242{ 1243 struct fdc_data *fdc; 1244 int error; 1245 1246 fdc = device_get_softc(dev); 1247 1248 /* have our children detached first */ 1249 if ((error = bus_generic_detach(dev))) 1250 return (error); 1251 1252#ifdef PC98 1253 /* reset controller, turn motor off */ 1254 fdc_reset(fdc); 1255#else 1256 /* reset controller, turn motor off */ 1257 fdout_wr(fdc, 0); 1258#endif 1259 1260 if ((fdc->flags & FDC_NODMA) == 0) 1261 isa_dma_release(fdc->dmachan); 1262 1263 if ((fdc->flags & FDC_ATTACHED) == 0) { 1264 device_printf(dev, "already unloaded\n"); 1265 return (0); 1266 } 1267 fdc->flags &= ~FDC_ATTACHED; 1268 1269 BUS_TEARDOWN_INTR(device_get_parent(dev), dev, fdc->res_irq, 1270 fdc->fdc_intr); 1271 fdc_release_resources(fdc); 1272 device_printf(dev, "unload\n"); 1273 return (0); 1274} 1275 1276/* 1277 * Add a child device to the fdc controller. It will then be probed etc. 1278 */ 1279static void 1280fdc_add_child(device_t dev, const char *name, int unit) 1281{ 1282 int disabled, flags; 1283 struct fdc_ivars *ivar; 1284 device_t child; 1285 1286 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT | M_ZERO); 1287 if (ivar == NULL) 1288 return; 1289 if (resource_int_value(name, unit, "drive", &ivar->fdunit) != 0) 1290 ivar->fdunit = 0; 1291 child = device_add_child(dev, name, unit); 1292 if (child == NULL) { 1293 free(ivar, M_DEVBUF); 1294 return; 1295 } 1296 device_set_ivars(child, ivar); 1297 if (resource_int_value(name, unit, "flags", &flags) == 0) 1298 device_set_flags(child, flags); 1299 if (resource_int_value(name, unit, "disabled", &disabled) == 0 1300 && disabled != 0) 1301 device_disable(child); 1302} 1303 1304static int 1305fdc_attach(device_t dev) 1306{ 1307 struct fdc_data *fdc; 1308 const char *name, *dname; 1309 int i, error, dunit; 1310 1311 fdc = device_get_softc(dev); 1312 error = fdc_alloc_resources(fdc); 1313 if (error) { 1314 device_printf(dev, "cannot re-acquire resources\n"); 1315 return error; 1316 } 1317 error = BUS_SETUP_INTR(device_get_parent(dev), dev, fdc->res_irq, 1318 INTR_TYPE_BIO | INTR_ENTROPY, fdc_intr, fdc, 1319 &fdc->fdc_intr); 1320 if (error) { 1321 device_printf(dev, "cannot setup interrupt\n"); 1322 return error; 1323 } 1324 fdc->fdcu = device_get_unit(dev); 1325 fdc->flags |= FDC_ATTACHED | FDC_NEEDS_RESET; 1326 1327 if ((fdc->flags & FDC_NODMA) == 0) { 1328 /* 1329 * Acquire the DMA channel forever, the driver will do 1330 * the rest 1331 * XXX should integrate with rman 1332 */ 1333 isa_dma_acquire(fdc->dmachan); 1334 isa_dmainit(fdc->dmachan, MAX_SEC_SIZE); 1335 } 1336 fdc->state = DEVIDLE; 1337 1338#ifdef PC98 1339 /* reset controller, turn motor off, clear fdout mirror reg */ 1340 fdc_reset(fdc); 1341#else 1342 /* reset controller, turn motor off, clear fdout mirror reg */ 1343 fdout_wr(fdc, fdc->fdout = 0); 1344#endif 1345 bioq_init(&fdc->head); 1346 1347 /* 1348 * Probe and attach any children. We should probably detect 1349 * devices from the BIOS unless overridden. 1350 */ 1351 name = device_get_nameunit(dev); 1352 i = 0; 1353 while ((resource_find_match(&i, &dname, &dunit, "at", name)) == 0) 1354 fdc_add_child(dev, dname, dunit); 1355 1356 if ((error = bus_generic_attach(dev)) != 0) 1357 return (error); 1358 1359 return (0); 1360} 1361 1362static int 1363fdc_print_child(device_t me, device_t child) 1364{ 1365 int retval = 0, flags; 1366 1367 retval += bus_print_child_header(me, child); 1368 retval += printf(" on %s drive %d", device_get_nameunit(me), 1369 fdc_get_fdunit(child)); 1370 if ((flags = device_get_flags(me)) != 0) 1371 retval += printf(" flags %#x", flags); 1372 retval += printf("\n"); 1373 1374 return (retval); 1375} 1376 1377static device_method_t fdc_methods[] = { 1378 /* Device interface */ 1379 DEVMETHOD(device_probe, fdc_probe), 1380 DEVMETHOD(device_attach, fdc_attach), 1381 DEVMETHOD(device_detach, fdc_detach), 1382 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1383 DEVMETHOD(device_suspend, bus_generic_suspend), 1384 DEVMETHOD(device_resume, bus_generic_resume), 1385 1386 /* Bus interface */ 1387 DEVMETHOD(bus_print_child, fdc_print_child), 1388 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 1389 /* Our children never use any other bus interface methods. */ 1390 1391 { 0, 0 } 1392}; 1393 1394static driver_t fdc_driver = { 1395 "fdc", 1396 fdc_methods, 1397 sizeof(struct fdc_data) 1398}; 1399 1400DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0); 1401#ifndef PC98 1402DRIVER_MODULE(fdc, acpi, fdc_driver, fdc_devclass, 0, 0); 1403#endif 1404 1405#if NCARD > 0 1406 1407static device_method_t fdc_pccard_methods[] = { 1408 /* Device interface */ 1409 DEVMETHOD(device_probe, fdc_pccard_probe), 1410 DEVMETHOD(device_attach, fdc_attach), 1411 DEVMETHOD(device_detach, fdc_detach), 1412 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1413 DEVMETHOD(device_suspend, bus_generic_suspend), 1414 DEVMETHOD(device_resume, bus_generic_resume), 1415 1416 /* Bus interface */ 1417 DEVMETHOD(bus_print_child, fdc_print_child), 1418 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 1419 /* Our children never use any other bus interface methods. */ 1420 1421 { 0, 0 } 1422}; 1423 1424static driver_t fdc_pccard_driver = { 1425 "fdc", 1426 fdc_pccard_methods, 1427 sizeof(struct fdc_data) 1428}; 1429 1430DRIVER_MODULE(fdc, pccard, fdc_pccard_driver, fdc_devclass, 0, 0); 1431 1432#endif /* NCARD > 0 */ 1433 1434/* 1435 * Create a clone device upon request by devfs. 1436 */ 1437static void 1438fd_clone(void *arg, char *name, int namelen, dev_t *dev) 1439{ 1440 struct fd_data *fd; 1441 int i, u; 1442 char *n; 1443 size_t l; 1444 1445 fd = (struct fd_data *)arg; 1446 if (*dev != NODEV) 1447 return; 1448 if (dev_stdclone(name, &n, "fd", &u) != 2) 1449 return; 1450 if (u != fd->fdu) 1451 /* unit # mismatch */ 1452 return; 1453 l = strlen(n); 1454 if (l == 1 && *n >= 'a' && *n <= 'h') { 1455 /* 1456 * Trailing letters a through h denote 1457 * pseudo-partitions. We don't support true 1458 * (UFS-style) partitions, so we just implement them 1459 * as symlinks if someone asks us nicely. 1460 */ 1461 *dev = make_dev_alias(fd->masterdev, name); 1462 return; 1463 } 1464 if (l >= 2 && l <= 5 && *n == '.') { 1465 /* 1466 * Trailing numbers, preceded by a dot, denote 1467 * subdevices for different densities. Historically, 1468 * they have been named by density (like fd0.1440), 1469 * but we allow arbitrary numbers between 1 and 4 1470 * digits, so fd0.1 through fd0.15 are possible as 1471 * well. 1472 */ 1473 for (i = 1; i < l; i++) 1474 if (n[i] < '0' || n[i] > '9') 1475 return; 1476 for (i = 0; i < NUMDENS - 1; i++) 1477 if (fd->clonedevs[i] == NODEV) { 1478 *dev = make_dev(&fd_cdevsw, 1479 FDNUMTOUNIT(u) + i + 1, 1480 UID_ROOT, GID_OPERATOR, 0640, 1481 name); 1482 fd->clonedevs[i] = *dev; 1483 return; 1484 } 1485 } 1486} 1487 1488/* 1489 * Configuration/initialization, per drive. 1490 */ 1491static int 1492fd_probe(device_t dev) 1493{ 1494 int i; 1495#ifndef PC98 1496 u_int st0, st3; 1497#endif 1498 struct fd_data *fd; 1499 struct fdc_data *fdc; 1500 fdsu_t fdsu; 1501 int flags; 1502 1503 fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */ 1504 fd = device_get_softc(dev); 1505 fdc = device_get_softc(device_get_parent(dev)); 1506 flags = device_get_flags(dev); 1507 1508 bzero(fd, sizeof *fd); 1509 fd->dev = dev; 1510 fd->fdc = fdc; 1511 fd->fdsu = fdsu; 1512 fd->fdu = device_get_unit(dev); 1513 fd->flags = FD_UA; /* make sure fdautoselect() will be called */ 1514 1515 fd->type = FD_DTYPE(flags); 1516#ifdef PC98 1517 if (fd->type == FDT_NONE && fd->fdu >= 0 && fd->fdu <= 3) { 1518 /* Look up what the BIOS thinks we have. */ 1519 if ((PC98_SYSTEM_PARAMETER(0x5ae) >> fd->fdu) & 0x01) 1520 fd->type = FDT_144M; 1521#ifdef EPSON_NRDISK 1522 else if ((PC98_SYSTEM_PARAMETER(0x55c) >> fd->fdu) & 0x01) { 1523 fd->type = FDT_12M; 1524 switch (epson_machine_id) { 1525 case 0x20: 1526 case 0x27: 1527 if ((PC98_SYSTEM_PARAMETER(0x488) >> fd->fdu) 1528 & 0x01) { 1529 if (nrd_check_ready()) { 1530 nrd_LED_on(); 1531 nrdu = fd->fdu; 1532 } else { 1533 fd->type = FDT_NONE; 1534 } 1535 } 1536 break; 1537 } 1538 } 1539#else /* !EPSON_NRDISK */ 1540 else if ((PC98_SYSTEM_PARAMETER(0x55c) >> fd->fdu) & 0x01) { 1541 fd->type = FDT_12M; 1542 switch (epson_machine_id) { 1543 case 0x20: 1544 case 0x27: 1545 if ((PC98_SYSTEM_PARAMETER(0x488) >> fd->fdu) 1546 & 0x01) 1547 fd->type = FDT_NONE; 1548 break; 1549 } 1550 } 1551#endif /* EPSON_NRDISK */ 1552 } 1553#else /* PC98 */ 1554/* 1555 * XXX I think using __i386__ is wrong here since we actually want to probe 1556 * for the machine type, not the CPU type (so non-PC arch's like the PC98 will 1557 * fail the probe). However, for whatever reason, testing for _MACHINE_ARCH 1558 * == i386 breaks the test on FreeBSD/Alpha. 1559 */ 1560#ifdef __i386__ 1561 if (fd->type == FDT_NONE && (fd->fdu == 0 || fd->fdu == 1)) { 1562 /* Look up what the BIOS thinks we have. */ 1563 if (fd->fdu == 0) { 1564 if ((fdc->flags & FDC_ISPCMCIA)) 1565 /* 1566 * Somewhat special. No need to force the 1567 * user to set device flags, since the Y-E 1568 * Data PCMCIA floppy is always a 1.44 MB 1569 * device. 1570 */ 1571 fd->type = FDT_144M; 1572 else 1573 fd->type = (rtcin(RTC_FDISKETTE) & 0xf0) >> 4; 1574 } else { 1575 fd->type = rtcin(RTC_FDISKETTE) & 0x0f; 1576 } 1577 if (fd->type == FDT_288M_1) 1578 fd->type = FDT_288M; 1579 } 1580#endif /* __i386__ */ 1581#endif /* PC98 */ 1582 1583 /* is there a unit? */ 1584 if (fd->type == FDT_NONE) 1585 return (ENXIO); 1586 1587#ifndef PC98 1588 /* select it */ 1589 set_motor(fdc, fdsu, TURNON); 1590 fdc_reset(fdc); /* XXX reset, then unreset, etc. */ 1591 DELAY(1000000); /* 1 sec */ 1592 1593 /* XXX This doesn't work before the first set_motor() */ 1594 if ((fdc->flags & FDC_HAS_FIFO) == 0 && 1595 fdc->fdct == FDC_ENHANCED && 1596 (device_get_flags(fdc->fdc_dev) & FDC_NO_FIFO) == 0 && 1597 enable_fifo(fdc) == 0) { 1598 device_printf(device_get_parent(dev), 1599 "FIFO enabled, %d bytes threshold\n", fifo_threshold); 1600 } 1601 1602 if ((flags & FD_NO_PROBE) == 0) { 1603 /* If we're at track 0 first seek inwards. */ 1604 if ((fd_sense_drive_status(fdc, &st3) == 0) && 1605 (st3 & NE7_ST3_T0)) { 1606 /* Seek some steps... */ 1607 if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 1608 /* ...wait a moment... */ 1609 DELAY(300000); 1610 /* make ctrlr happy: */ 1611 fd_sense_int(fdc, 0, 0); 1612 } 1613 } 1614 1615 for (i = 0; i < 2; i++) { 1616 /* 1617 * we must recalibrate twice, just in case the 1618 * heads have been beyond cylinder 76, since 1619 * most FDCs still barf when attempting to 1620 * recalibrate more than 77 steps 1621 */ 1622 /* go back to 0: */ 1623 if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 1624 /* a second being enough for full stroke seek*/ 1625 DELAY(i == 0 ? 1000000 : 300000); 1626 1627 /* anything responding? */ 1628 if (fd_sense_int(fdc, &st0, 0) == 0 && 1629 (st0 & NE7_ST0_EC) == 0) 1630 break; /* already probed succesfully */ 1631 } 1632 } 1633 } 1634 1635 set_motor(fdc, fdsu, TURNOFF); 1636 1637 if ((flags & FD_NO_PROBE) == 0 && 1638 (st0 & NE7_ST0_EC) != 0) /* no track 0 -> no drive present */ 1639 return (ENXIO); 1640#endif /* PC98 */ 1641 1642#ifdef PC98 1643 switch (fd->type) { 1644 case FDT_144M: 1645 /* Check 3mode I/F */ 1646 fd->pc98_trans = 0; 1647 bus_space_write_1(fdc->sc_fdemsiot, fdc->sc_fdemsioh, 0, 1648 (fd->fdu << 5) | 0x10); 1649 if (!(bus_space_read_1(fdc->sc_fdemsiot, fdc->sc_fdemsioh, 0) & 1650 0x01)) { 1651 device_set_desc(dev, "1.44M FDD"); 1652 fd->type = FDT_144M; 1653 break; 1654 } 1655 1656 device_printf(dev, 1657 "Warning: can't control 3mode I/F, fallback to 2mode.\n"); 1658 /* FALLTHROUGH */ 1659 case FDT_12M: 1660#ifdef EPSON_NRDISK 1661 if (fd->fdu == nrdu) { 1662 device_set_desc(dev, "EPSON RAM DRIVE"); 1663 nrd_LED_off(); 1664 } else 1665 device_set_desc(dev, "1M/640K FDD"); 1666#else 1667 device_set_desc(dev, "1M/640K FDD"); 1668#endif 1669 fd->type = FDT_12M; 1670 break; 1671 default: 1672 return (ENXIO); 1673 } 1674#else 1675 switch (fd->type) { 1676 case FDT_12M: 1677 device_set_desc(dev, "1200-KB 5.25\" drive"); 1678 fd->type = FDT_12M; 1679 break; 1680 case FDT_144M: 1681 device_set_desc(dev, "1440-KB 3.5\" drive"); 1682 fd->type = FDT_144M; 1683 break; 1684 case FDT_288M: 1685 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); 1686 fd->type = FDT_288M; 1687 break; 1688 case FDT_360K: 1689 device_set_desc(dev, "360-KB 5.25\" drive"); 1690 fd->type = FDT_360K; 1691 break; 1692 case FDT_720K: 1693 device_set_desc(dev, "720-KB 3.5\" drive"); 1694 fd->type = FDT_720K; 1695 break; 1696 default: 1697 return (ENXIO); 1698 } 1699#endif 1700 fd->track = FD_NO_TRACK; 1701 fd->fdc = fdc; 1702 fd->fdsu = fdsu; 1703 fd->options = 0; 1704#ifdef PC98 1705 fd->pc98_trans = 0; 1706#endif 1707 callout_handle_init(&fd->toffhandle); 1708 callout_handle_init(&fd->tohandle); 1709 1710 /* initialize densities for subdevices */ 1711#ifdef PC98 1712 for (i = 0; i < NUMDENS; i++) 1713 memcpy(fd->fts + i, fd_searchlist_144m + i, 1714 sizeof(struct fd_type)); 1715#else 1716 for (i = 0; i < NUMDENS; i++) 1717 memcpy(fd->fts + i, fd_native_types + fd->type, 1718 sizeof(struct fd_type)); 1719#endif 1720 return (0); 1721} 1722 1723static int 1724fd_attach(device_t dev) 1725{ 1726 struct fd_data *fd; 1727 int i; 1728 1729 fd = device_get_softc(dev); 1730 fd->clonetag = EVENTHANDLER_REGISTER(dev_clone, fd_clone, fd, 1000); 1731 fd->masterdev = make_dev(&fd_cdevsw, fd->fdu << 6, 1732 UID_ROOT, GID_OPERATOR, 0640, "fd%d", fd->fdu); 1733 for (i = 0; i < NUMDENS - 1; i++) 1734 fd->clonedevs[i] = NODEV; 1735 devstat_add_entry(&fd->device_stats, device_get_name(dev), 1736 device_get_unit(dev), 0, DEVSTAT_NO_ORDERED_TAGS, 1737 DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER, 1738 DEVSTAT_PRIORITY_FD); 1739 return (0); 1740} 1741 1742static int 1743fd_detach(device_t dev) 1744{ 1745 struct fd_data *fd; 1746 int i; 1747 1748 fd = device_get_softc(dev); 1749 untimeout(fd_turnoff, fd, fd->toffhandle); 1750 devstat_remove_entry(&fd->device_stats); 1751 destroy_dev(fd->masterdev); 1752 for (i = 0; i < NUMDENS - 1; i++) 1753 if (fd->clonedevs[i] != NODEV) 1754 destroy_dev(fd->clonedevs[i]); 1755 EVENTHANDLER_DEREGISTER(dev_clone, fd->clonetag); 1756 1757 return (0); 1758} 1759 1760static device_method_t fd_methods[] = { 1761 /* Device interface */ 1762 DEVMETHOD(device_probe, fd_probe), 1763 DEVMETHOD(device_attach, fd_attach), 1764 DEVMETHOD(device_detach, fd_detach), 1765 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1766 DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ 1767 DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ 1768 1769 { 0, 0 } 1770}; 1771 1772static driver_t fd_driver = { 1773 "fd", 1774 fd_methods, 1775 sizeof(struct fd_data) 1776}; 1777 1778DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, 0, 0); 1779 1780/* 1781 * More auxiliary functions. 1782 */ 1783/* 1784 * Motor control stuff. 1785 * Remember to not deselect the drive we're working on. 1786 */ 1787static void 1788set_motor(struct fdc_data *fdc, int fdsu, int turnon) 1789{ 1790#ifdef PC98 1791 bus_space_write_1(fdc->sc_fdsiot, fdc->sc_fdsioh, 0, 1792 (pc98_trans != 1 ? FDP_FDDEXC : 0) | FDP_PORTEXC); 1793 DELAY(10); 1794 fdctl_wr(fdc, FDC_DMAE | FDC_MTON); 1795#else 1796 int fdout; 1797 1798 fdout = fdc->fdout; 1799 if (turnon) { 1800 fdout &= ~FDO_FDSEL; 1801 fdout |= (FDO_MOEN0 << fdsu) | FDO_FDMAEN | FDO_FRST | fdsu; 1802 } else 1803 fdout &= ~(FDO_MOEN0 << fdsu); 1804 fdc->fdout = fdout; 1805 fdout_wr(fdc, fdout); 1806 TRACE1("[0x%x->FDOUT]", fdout); 1807#endif 1808} 1809 1810static void 1811fd_turnoff(void *xfd) 1812{ 1813 int s; 1814 fd_p fd = xfd; 1815 1816 TRACE1("[fd%d: turnoff]", fd->fdu); 1817 1818 s = splbio(); 1819 /* 1820 * Don't turn off the motor yet if the drive is active. 1821 * 1822 * If we got here, this could only mean we missed an interrupt. 1823 * This can e. g. happen on the Y-E Date PCMCIA floppy controller 1824 * after a controller reset. Just schedule a pseudo-interrupt 1825 * so the state machine gets re-entered. 1826 */ 1827 if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) { 1828 fdc_intr(fd->fdc); 1829 splx(s); 1830 return; 1831 } 1832 1833 fd->flags &= ~FD_MOTOR; 1834 set_motor(fd->fdc, fd->fdsu, TURNOFF); 1835 splx(s); 1836} 1837 1838static void 1839fd_motor_on(void *xfd) 1840{ 1841 int s; 1842 fd_p fd = xfd; 1843 1844 s = splbio(); 1845 fd->flags &= ~FD_MOTOR_WAIT; 1846 if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT)) 1847 { 1848 fdc_intr(fd->fdc); 1849 } 1850 splx(s); 1851} 1852 1853static void 1854fd_turnon(fd_p fd) 1855{ 1856 if(!(fd->flags & FD_MOTOR)) 1857 { 1858 fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT); 1859 set_motor(fd->fdc, fd->fdsu, TURNON); 1860 timeout(fd_motor_on, fd, hz); /* in 1 sec its ok */ 1861 } 1862} 1863 1864static void 1865fdc_reset(fdc_p fdc) 1866{ 1867 /* Try a reset, keep motor on */ 1868#ifdef PC98 1869 set_density(fdc); 1870 if (pc98_machine_type & M_EPSON_PC98) 1871 fdctl_wr(fdc, FDC_RST | FDC_RDY | FDC_DD | FDC_MTON); 1872 else 1873 fdctl_wr(fdc, FDC_RST | FDC_RDY | FDC_DMAE | FDC_MTON); 1874 DELAY(200); 1875 fdctl_wr(fdc, FDC_DMAE | FDC_MTON); 1876 DELAY(10); 1877#else 1878 fdout_wr(fdc, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1879 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1880 DELAY(100); 1881 /* enable FDC, but defer interrupts a moment */ 1882 fdout_wr(fdc, fdc->fdout & ~FDO_FDMAEN); 1883 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN); 1884 DELAY(100); 1885 fdout_wr(fdc, fdc->fdout); 1886 TRACE1("[0x%x->FDOUT]", fdc->fdout); 1887#endif 1888 1889 /* XXX after a reset, silently believe the FDC will accept commands */ 1890#ifdef PC98 1891 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1892 NE7_SPEC_1(4, 240), NE7_SPEC_2(2, 0), 1893 0); 1894#else 1895 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1896 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1897 0); 1898#endif 1899 if (fdc->flags & FDC_HAS_FIFO) 1900 (void) enable_fifo(fdc); 1901} 1902 1903/* 1904 * FDC IO functions, take care of the main status register, timeout 1905 * in case the desired status bits are never set. 1906 * 1907 * These PIO loops initially start out with short delays between 1908 * each iteration in the expectation that the required condition 1909 * is usually met quickly, so it can be handled immediately. After 1910 * about 1 ms, stepping is increased to achieve a better timing 1911 * accuracy in the calls to DELAY(). 1912 */ 1913static int 1914fd_in(struct fdc_data *fdc, int *ptr) 1915{ 1916 int i, j, step; 1917 1918 for (j = 0, step = 1; 1919 (i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) != (NE7_DIO|NE7_RQM) && 1920 j < FDSTS_TIMEOUT; 1921 j += step) { 1922 if (i == NE7_RQM) 1923 return (fdc_err(fdc, "ready for output in input\n")); 1924 if (j == 1000) 1925 step = 1000; 1926 DELAY(step); 1927 } 1928 if (j >= FDSTS_TIMEOUT) 1929 return (fdc_err(fdc, bootverbose? "input ready timeout\n": 0)); 1930#ifdef FDC_DEBUG 1931 i = fddata_rd(fdc); 1932 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1933 *ptr = i; 1934 return (0); 1935#else /* !FDC_DEBUG */ 1936 i = fddata_rd(fdc); 1937 if (ptr) 1938 *ptr = i; 1939 return (0); 1940#endif /* FDC_DEBUG */ 1941} 1942 1943static int 1944out_fdc(struct fdc_data *fdc, int x) 1945{ 1946 int i, j, step; 1947 1948 for (j = 0, step = 1; 1949 (i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) != NE7_RQM && 1950 j < FDSTS_TIMEOUT; 1951 j += step) { 1952 if (i == (NE7_DIO|NE7_RQM)) 1953 return (fdc_err(fdc, "ready for input in output\n")); 1954 if (j == 1000) 1955 step = 1000; 1956 DELAY(step); 1957 } 1958 if (j >= FDSTS_TIMEOUT) 1959 return (fdc_err(fdc, bootverbose? "output ready timeout\n": 0)); 1960 1961 /* Send the command and return */ 1962 fddata_wr(fdc, x); 1963 TRACE1("[0x%x->FDDATA]", x); 1964 return (0); 1965} 1966 1967/* 1968 * Block device driver interface functions (interspersed with even more 1969 * auxiliary functions). 1970 */ 1971static int 1972Fdopen(dev_t dev, int flags, int mode, struct thread *td) 1973{ 1974 fdu_t fdu = FDUNIT(minor(dev)); 1975 int type = FDTYPE(minor(dev)); 1976 fd_p fd; 1977 fdc_p fdc; 1978 int rv, unitattn, dflags; 1979 1980 if ((fd = devclass_get_softc(fd_devclass, fdu)) == 0) 1981 return (ENXIO); 1982 fdc = fd->fdc; 1983 if ((fdc == NULL) || (fd->type == FDT_NONE)) 1984 return (ENXIO); 1985 if (type > NUMDENS) 1986 return (ENXIO); 1987 dflags = device_get_flags(fd->dev); 1988 /* 1989 * This is a bit bogus. It's still possible that e. g. a 1990 * descriptor gets inherited to a child, but then it's at 1991 * least for the same subdevice. By checking FD_OPEN here, we 1992 * can ensure that a device isn't attempted to be opened with 1993 * different densities at the same time where the second open 1994 * could clobber the settings from the first one. 1995 */ 1996 if (fd->flags & FD_OPEN) 1997 return (EBUSY); 1998 1999#ifdef PC98 2000 if (pc98_fd_check_ready(fdu) == -1) 2001 return(EIO); 2002#endif 2003 2004 if (type == 0) { 2005 if (flags & FNONBLOCK) { 2006 /* 2007 * Unfortunately, physio(9) discards its ioflag 2008 * argument, thus preventing us from seeing the 2009 * IO_NDELAY bit. So we need to keep track 2010 * ourselves. 2011 */ 2012 fd->flags |= FD_NONBLOCK; 2013 fd->ft = 0; 2014 } else { 2015 /* 2016 * Figure out a unit attention condition. 2017 * 2018 * If UA has been forced, proceed. 2019 * 2020 * If motor is off, turn it on for a moment 2021 * and select our drive, in order to read the 2022 * UA hardware signal. 2023 * 2024 * If motor is on, and our drive is currently 2025 * selected, just read the hardware bit. 2026 * 2027 * If motor is on, but active for another 2028 * drive on that controller, we are lost. We 2029 * cannot risk to deselect the other drive, so 2030 * we just assume a forced UA condition to be 2031 * on the safe side. 2032 */ 2033 unitattn = 0; 2034 if ((dflags & FD_NO_CHLINE) != 0 || 2035 (fd->flags & FD_UA) != 0) { 2036 unitattn = 1; 2037 fd->flags &= ~FD_UA; 2038#ifndef PC98 2039 } else if (fdc->fdout & (FDO_MOEN0 | FDO_MOEN1 | 2040 FDO_MOEN2 | FDO_MOEN3)) { 2041 if ((fdc->fdout & FDO_FDSEL) == fd->fdsu) 2042 unitattn = fdin_rd(fdc) & FDI_DCHG; 2043 else 2044 unitattn = 1; 2045 } else { 2046 set_motor(fdc, fd->fdsu, TURNON); 2047 unitattn = fdin_rd(fdc) & FDI_DCHG; 2048 set_motor(fdc, fd->fdsu, TURNOFF); 2049#endif /* PC98 */ 2050 } 2051 if (unitattn && (rv = fdautoselect(dev)) != 0) 2052 return (rv); 2053 } 2054 } else { 2055 fd->ft = fd->fts + type; 2056 } 2057 fd->flags |= FD_OPEN; 2058 /* 2059 * Clearing the DMA overrun counter at open time is a bit messy. 2060 * Since we're only managing one counter per controller, opening 2061 * the second drive could mess it up. Anyway, if the DMA overrun 2062 * condition is really persistent, it will eventually time out 2063 * still. OTOH, clearing it here will ensure we'll at least start 2064 * trying again after a previous (maybe even long ago) failure. 2065 * Also, this is merely a stop-gap measure only that should not 2066 * happen during normal operation, so we can tolerate it to be a 2067 * bit sloppy about this. 2068 */ 2069 fdc->dma_overruns = 0; 2070 2071 return 0; 2072} 2073 2074static int 2075fdclose(dev_t dev, int flags, int mode, struct thread *td) 2076{ 2077 fdu_t fdu = FDUNIT(minor(dev)); 2078 struct fd_data *fd; 2079 2080 fd = devclass_get_softc(fd_devclass, fdu); 2081 fd->flags &= ~(FD_OPEN | FD_NONBLOCK); 2082 fd->options &= ~(FDOPT_NORETRY | FDOPT_NOERRLOG | FDOPT_NOERROR); 2083 2084 return (0); 2085} 2086 2087static void 2088fdstrategy(struct bio *bp) 2089{ 2090 long blknum, nblocks; 2091 int s; 2092 fdu_t fdu; 2093 fdc_p fdc; 2094 fd_p fd; 2095 size_t fdblk; 2096 2097 fdu = FDUNIT(minor(bp->bio_dev)); 2098 fd = devclass_get_softc(fd_devclass, fdu); 2099 if (fd == 0) 2100 panic("fdstrategy: buf for nonexistent device (%#lx, %#lx)", 2101 (u_long)major(bp->bio_dev), (u_long)minor(bp->bio_dev)); 2102 fdc = fd->fdc; 2103 if (fd->type == FDT_NONE || fd->ft == 0) { 2104 bp->bio_error = ENXIO; 2105 bp->bio_flags |= BIO_ERROR; 2106 goto bad; 2107 } 2108 fdblk = 128 << (fd->ft->secsize); 2109 if (bp->bio_cmd != FDBIO_FORMAT && bp->bio_cmd != FDBIO_RDSECTID) { 2110 if (fd->flags & FD_NONBLOCK) { 2111 bp->bio_error = EAGAIN; 2112 bp->bio_flags |= BIO_ERROR; 2113 goto bad; 2114 } 2115 if (bp->bio_blkno < 0) { 2116 printf( 2117 "fd%d: fdstrat: bad request blkno = %lu, bcount = %ld\n", 2118 fdu, (u_long)bp->bio_blkno, bp->bio_bcount); 2119 bp->bio_error = EINVAL; 2120 bp->bio_flags |= BIO_ERROR; 2121 goto bad; 2122 } 2123 if ((bp->bio_bcount % fdblk) != 0) { 2124 bp->bio_error = EINVAL; 2125 bp->bio_flags |= BIO_ERROR; 2126 goto bad; 2127 } 2128 } 2129 2130 /* 2131 * Set up block calculations. 2132 */ 2133 if (bp->bio_blkno > 20000000) { 2134 /* 2135 * Reject unreasonably high block number, prevent the 2136 * multiplication below from overflowing. 2137 */ 2138 bp->bio_error = EINVAL; 2139 bp->bio_flags |= BIO_ERROR; 2140 goto bad; 2141 } 2142 blknum = bp->bio_blkno * DEV_BSIZE / fdblk; 2143 nblocks = fd->ft->size; 2144 if (blknum + bp->bio_bcount / fdblk > nblocks) { 2145 if (blknum >= nblocks) { 2146 if (bp->bio_cmd == BIO_READ) 2147 bp->bio_resid = bp->bio_bcount; 2148 else { 2149 bp->bio_error = ENOSPC; 2150 bp->bio_flags |= BIO_ERROR; 2151 } 2152 goto bad; /* not always bad, but EOF */ 2153 } 2154 bp->bio_bcount = (nblocks - blknum) * fdblk; 2155 } 2156 bp->bio_pblkno = blknum; 2157 s = splbio(); 2158 bioqdisksort(&fdc->head, bp); 2159 untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */ 2160 devstat_start_transaction(&fd->device_stats); 2161 device_busy(fd->dev); 2162 fdstart(fdc); 2163 splx(s); 2164 return; 2165 2166bad: 2167 biodone(bp); 2168} 2169 2170/* 2171 * fdstart 2172 * 2173 * We have just queued something. If the controller is not busy 2174 * then simulate the case where it has just finished a command 2175 * So that it (the interrupt routine) looks on the queue for more 2176 * work to do and picks up what we just added. 2177 * 2178 * If the controller is already busy, we need do nothing, as it 2179 * will pick up our work when the present work completes. 2180 */ 2181static void 2182fdstart(struct fdc_data *fdc) 2183{ 2184 int s; 2185 2186 s = splbio(); 2187 if(fdc->state == DEVIDLE) 2188 { 2189 fdc_intr(fdc); 2190 } 2191 splx(s); 2192} 2193 2194static void 2195fd_iotimeout(void *xfdc) 2196{ 2197 fdc_p fdc; 2198 int s; 2199 2200 fdc = xfdc; 2201 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu); 2202 2203 /* 2204 * Due to IBM's brain-dead design, the FDC has a faked ready 2205 * signal, hardwired to ready == true. Thus, any command 2206 * issued if there's no diskette in the drive will _never_ 2207 * complete, and must be aborted by resetting the FDC. 2208 * Many thanks, Big Blue! 2209 * The FDC must not be reset directly, since that would 2210 * interfere with the state machine. Instead, pretend that 2211 * the command completed but was invalid. The state machine 2212 * will reset the FDC and retry once. 2213 */ 2214 s = splbio(); 2215 fdc->status[0] = NE7_ST0_IC_IV; 2216 fdc->flags &= ~FDC_STAT_VALID; 2217 fdc->state = IOTIMEDOUT; 2218 fdc_intr(fdc); 2219 splx(s); 2220} 2221 2222/* Just ensure it has the right spl. */ 2223static void 2224fd_pseudointr(void *xfdc) 2225{ 2226 int s; 2227 2228 s = splbio(); 2229 fdc_intr(xfdc); 2230 splx(s); 2231} 2232 2233/* 2234 * fdc_intr 2235 * 2236 * Keep calling the state machine until it returns a 0. 2237 * Always called at splbio. 2238 */ 2239static void 2240fdc_intr(void *xfdc) 2241{ 2242 fdc_p fdc = xfdc; 2243 while(fdstate(fdc)) 2244 ; 2245} 2246 2247/* 2248 * Magic pseudo-DMA initialization for YE FDC. Sets count and 2249 * direction. 2250 */ 2251#define SET_BCDR(fdc,wr,cnt,port) \ 2252 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port, \ 2253 ((cnt)-1) & 0xff); \ 2254 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port + 1, \ 2255 ((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f))); 2256 2257/* 2258 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy. 2259 */ 2260static int 2261fdcpio(fdc_p fdc, long flags, caddr_t addr, u_int count) 2262{ 2263 u_char *cptr = (u_char *)addr; 2264 2265 if (flags == BIO_READ) { 2266 if (fdc->state != PIOREAD) { 2267 fdc->state = PIOREAD; 2268 return(0); 2269 } 2270 SET_BCDR(fdc, 0, count, 0); 2271 bus_space_read_multi_1(fdc->portt, fdc->porth, fdc->port_off + 2272 FDC_YE_DATAPORT, cptr, count); 2273 } else { 2274 bus_space_write_multi_1(fdc->portt, fdc->porth, fdc->port_off + 2275 FDC_YE_DATAPORT, cptr, count); 2276 SET_BCDR(fdc, 0, count, 0); 2277 } 2278 return(1); 2279} 2280 2281/* 2282 * Try figuring out the density of the media present in our device. 2283 */ 2284static int 2285fdautoselect(dev_t dev) 2286{ 2287 fdu_t fdu; 2288 fd_p fd; 2289 struct fd_type *fdtp; 2290 struct fdc_readid id; 2291 int i, n, oopts, rv; 2292 2293 fdu = FDUNIT(minor(dev)); 2294 fd = devclass_get_softc(fd_devclass, fdu); 2295 2296 switch (fd->type) { 2297 default: 2298 return (ENXIO); 2299 2300#ifndef PC98 2301 case FDT_360K: 2302 case FDT_720K: 2303 /* no autoselection on those drives */ 2304 fd->ft = fd_native_types + fd->type; 2305 return (0); 2306#endif 2307 2308 case FDT_12M: 2309 fdtp = fd_searchlist_12m; 2310 n = sizeof fd_searchlist_12m / sizeof(struct fd_type); 2311 break; 2312 2313 case FDT_144M: 2314 fdtp = fd_searchlist_144m; 2315 n = sizeof fd_searchlist_144m / sizeof(struct fd_type); 2316 break; 2317 2318#ifndef PC98 2319 case FDT_288M: 2320 fdtp = fd_searchlist_288m; 2321 n = sizeof fd_searchlist_288m / sizeof(struct fd_type); 2322 break; 2323#endif 2324 } 2325 2326 /* 2327 * Try reading sector ID fields, first at cylinder 0, head 0, 2328 * then at cylinder 2, head N. We don't probe cylinder 1, 2329 * since for 5.25in DD media in a HD drive, there are no data 2330 * to read (2 step pulses per media cylinder required). For 2331 * two-sided media, the second probe always goes to head 1, so 2332 * we can tell them apart from single-sided media. As a 2333 * side-effect this means that single-sided media should be 2334 * mentioned in the search list after two-sided media of an 2335 * otherwise identical density. Media with a different number 2336 * of sectors per track but otherwise identical parameters 2337 * cannot be distinguished at all. 2338 * 2339 * If we successfully read an ID field on both cylinders where 2340 * the recorded values match our expectation, we are done. 2341 * Otherwise, we try the next density entry from the table. 2342 * 2343 * Stepping to cylinder 2 has the side-effect of clearing the 2344 * unit attention bit. 2345 */ 2346 oopts = fd->options; 2347 fd->options |= FDOPT_NOERRLOG | FDOPT_NORETRY; 2348 for (i = 0; i < n; i++, fdtp++) { 2349 fd->ft = fdtp; 2350 2351 id.cyl = id.head = 0; 2352 rv = fdmisccmd(dev, FDBIO_RDSECTID, &id); 2353 if (rv != 0) 2354 continue; 2355 if (id.cyl != 0 || id.head != 0 || 2356 id.secshift != fdtp->secsize) 2357 continue; 2358 id.cyl = 2; 2359 id.head = fd->ft->heads - 1; 2360 rv = fdmisccmd(dev, FDBIO_RDSECTID, &id); 2361 if (id.cyl != 2 || id.head != fdtp->heads - 1 || 2362 id.secshift != fdtp->secsize) 2363 continue; 2364 if (rv == 0) 2365 break; 2366 } 2367 2368 fd->options = oopts; 2369 if (i == n) { 2370 if (bootverbose) 2371 device_printf(fd->dev, "autoselection failed\n"); 2372 fd->ft = 0; 2373 return (EIO); 2374 } else { 2375 if (bootverbose) 2376 device_printf(fd->dev, "autoselected %d KB medium\n", 2377 fd->ft->size / 2); 2378 return (0); 2379 } 2380} 2381 2382 2383/* 2384 * The controller state machine. 2385 * 2386 * If it returns a non zero value, it should be called again immediately. 2387 */ 2388static int 2389fdstate(fdc_p fdc) 2390{ 2391 struct fdc_readid *idp; 2392 int read, format, rdsectid, cylinder, head, i, sec = 0, sectrac; 2393 int st0, cyl, st3, idf, ne7cmd, mfm, steptrac; 2394 unsigned long blknum; 2395 fdu_t fdu = fdc->fdu; 2396 fd_p fd; 2397 register struct bio *bp; 2398 struct fd_formb *finfo = NULL; 2399 size_t fdblk; 2400 2401 bp = fdc->bp; 2402 if (bp == NULL) { 2403 bp = bioq_first(&fdc->head); 2404 if (bp != NULL) { 2405 bioq_remove(&fdc->head, bp); 2406 fdc->bp = bp; 2407 } 2408 } 2409 if (bp == NULL) { 2410 /* 2411 * Nothing left for this controller to do, 2412 * force into the IDLE state. 2413 */ 2414 fdc->state = DEVIDLE; 2415 if (fdc->fd) { 2416 device_printf(fdc->fdc_dev, 2417 "unexpected valid fd pointer\n"); 2418 fdc->fd = (fd_p) 0; 2419 fdc->fdu = -1; 2420 } 2421 TRACE1("[fdc%d IDLE]", fdc->fdcu); 2422 return (0); 2423 } 2424 fdu = FDUNIT(minor(bp->bio_dev)); 2425 fd = devclass_get_softc(fd_devclass, fdu); 2426 fdblk = 128 << fd->ft->secsize; 2427 if (fdc->fd && (fd != fdc->fd)) 2428 device_printf(fd->dev, "confused fd pointers\n"); 2429 read = bp->bio_cmd == BIO_READ; 2430 mfm = (fd->ft->flags & FL_MFM)? NE7CMD_MFM: 0; 2431 steptrac = (fd->ft->flags & FL_2STEP)? 2: 1; 2432 if (read) 2433 idf = ISADMA_READ; 2434 else 2435 idf = ISADMA_WRITE; 2436 format = bp->bio_cmd == FDBIO_FORMAT; 2437 rdsectid = bp->bio_cmd == FDBIO_RDSECTID; 2438 if (format) 2439 finfo = (struct fd_formb *)bp->bio_data; 2440 TRACE1("fd%d", fdu); 2441 TRACE1("[%s]", fdstates[fdc->state]); 2442 TRACE1("(0x%x)", fd->flags); 2443 untimeout(fd_turnoff, fd, fd->toffhandle); 2444 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 2445 switch (fdc->state) 2446 { 2447 case DEVIDLE: 2448 case FINDWORK: /* we have found new work */ 2449 fdc->retry = 0; 2450 fd->skip = 0; 2451 fdc->fd = fd; 2452 fdc->fdu = fdu; 2453#ifdef PC98 2454 pc98_trans = fd->ft->trans; 2455 if (pc98_trans_prev != pc98_trans) { 2456 int i; 2457 set_density(fdc); 2458 for (i = 0; i < 10; i++) { 2459 outb(0x5f, 0); 2460 outb(0x5f, 0); 2461 } 2462 pc98_trans_prev = pc98_trans; 2463 } 2464 if (pc98_trans != fd->pc98_trans) { 2465 if (fd->type == FDT_144M) { 2466 bus_space_write_1(fdc->sc_fdemsiot, 2467 fdc->sc_fdemsioh, 2468 0, 2469 (fdu << 5) | 0x10 | 2470 (pc98_trans >> 1)); 2471 outb(0x5f, 0); 2472 outb(0x5f, 0); 2473 } 2474 fd->pc98_trans = pc98_trans; 2475 } 2476#else 2477 fdc->fdctl_wr(fdc, fd->ft->trans); 2478#endif 2479 TRACE1("[0x%x->FDCTL]", fd->ft->trans); 2480 /* 2481 * If the next drive has a motor startup pending, then 2482 * it will start up in its own good time. 2483 */ 2484 if(fd->flags & FD_MOTOR_WAIT) { 2485 fdc->state = MOTORWAIT; 2486 return (0); /* will return later */ 2487 } 2488 /* 2489 * Maybe if it's not starting, it SHOULD be starting. 2490 */ 2491#ifdef EPSON_NRDISK 2492 if (fdu != nrdu) { 2493 if (!(fd->flags & FD_MOTOR)) 2494 { 2495 fdc->state = MOTORWAIT; 2496 fd_turnon(fdu); 2497 return(0); 2498 } 2499 else /* at least make sure we are selected */ 2500 { 2501 set_motor(fdcu, fd->fdsu, TURNON); 2502 } 2503 } 2504#else /* !EPSON_NRDISK */ 2505 if (!(fd->flags & FD_MOTOR)) 2506 { 2507 fdc->state = MOTORWAIT; 2508 fd_turnon(fd); 2509 return (0); /* will return later */ 2510 } 2511 else /* at least make sure we are selected */ 2512 { 2513 set_motor(fdc, fd->fdsu, TURNON); 2514 } 2515#endif 2516 if (fdc->flags & FDC_NEEDS_RESET) { 2517 fdc->state = RESETCTLR; 2518 fdc->flags &= ~FDC_NEEDS_RESET; 2519 } else 2520 fdc->state = DOSEEK; 2521 return (1); /* will return immediately */ 2522 2523 case DOSEEK: 2524#ifdef PC98 2525 blknum = bp->bio_pblkno * DEV_BSIZE / fdblk + fd->skip / fdblk; 2526#else 2527 blknum = bp->bio_pblkno + fd->skip / fdblk; 2528#endif 2529 cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 2530 if (cylinder == fd->track) 2531 { 2532 fdc->state = SEEKCOMPLETE; 2533 return (1); /* will return immediately */ 2534 } 2535#ifdef PC98 2536 pc98_fd_check_ready(fdu); 2537#endif 2538 if (fd_cmd(fdc, 3, NE7CMD_SEEK, 2539 fd->fdsu, cylinder * steptrac, 0)) 2540 { 2541 /* 2542 * Seek command not accepted, looks like 2543 * the FDC went off to the Saints... 2544 */ 2545 fdc->retry = 6; /* try a reset */ 2546 return(retrier(fdc)); 2547 } 2548 fd->track = FD_NO_TRACK; 2549 fdc->state = SEEKWAIT; 2550 return(0); /* will return later */ 2551 2552 case SEEKWAIT: 2553 /* allow heads to settle */ 2554 timeout(fd_pseudointr, fdc, hz / 16); 2555 fdc->state = SEEKCOMPLETE; 2556 return(0); /* will return later */ 2557 2558 case SEEKCOMPLETE : /* seek done, start DMA */ 2559#ifdef PC98 2560 blknum = bp->bio_pblkno * DEV_BSIZE / fdblk + fd->skip / fdblk; 2561#else 2562 blknum = bp->bio_pblkno + fd->skip / fdblk; 2563#endif 2564 cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 2565 2566 /* Make sure seek really happened. */ 2567 if(fd->track == FD_NO_TRACK) { 2568 int descyl = cylinder * steptrac; 2569 do { 2570 /* 2571 * This might be a "ready changed" interrupt, 2572 * which cannot really happen since the 2573 * RDY pin is hardwired to + 5 volts. This 2574 * generally indicates a "bouncing" intr 2575 * line, so do one of the following: 2576 * 2577 * When running on an enhanced FDC that is 2578 * known to not go stuck after responding 2579 * with INVALID, fetch all interrupt states 2580 * until seeing either an INVALID or a 2581 * real interrupt condition. 2582 * 2583 * When running on a dumb old NE765, give 2584 * up immediately. The controller will 2585 * provide up to four dummy RC interrupt 2586 * conditions right after reset (for the 2587 * corresponding four drives), so this is 2588 * our only chance to get notice that it 2589 * was not the FDC that caused the interrupt. 2590 */ 2591 if (fd_sense_int(fdc, &st0, &cyl) 2592 == FD_NOT_VALID) 2593 return (0); /* will return later */ 2594 if(fdc->fdct == FDC_NE765 2595 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 2596 return (0); /* hope for a real intr */ 2597 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 2598 2599 if (0 == descyl) { 2600 int failed = 0; 2601 /* 2602 * seek to cyl 0 requested; make sure we are 2603 * really there 2604 */ 2605 if (fd_sense_drive_status(fdc, &st3)) 2606 failed = 1; 2607#ifdef EPSON_NRDISK 2608 if (fdu == nrdu) st3 = NE7_ST3_T0; 2609#endif /* EPSON_NRDISK */ 2610 if ((st3 & NE7_ST3_T0) == 0) { 2611 printf( 2612 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n", 2613 fdu, st3, NE7_ST3BITS); 2614 failed = 1; 2615 } 2616 2617 if (failed) { 2618 if(fdc->retry < 3) 2619 fdc->retry = 3; 2620 return (retrier(fdc)); 2621 } 2622 } 2623#ifdef EPSON_NRDISK 2624 if (fdu == nrdu) cyl = descyl; 2625#endif 2626 2627 if (cyl != descyl) { 2628 printf( 2629 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n", 2630 fdu, descyl, cyl, st0); 2631 if (fdc->retry < 3) 2632 fdc->retry = 3; 2633 return (retrier(fdc)); 2634 } 2635 } 2636 2637 fd->track = cylinder; 2638 if (format) 2639 fd->skip = (char *)&(finfo->fd_formb_cylno(0)) 2640 - (char *)finfo; 2641#ifdef EPSON_NRDISK 2642 if (fdu != nrdu) { 2643#endif /* EPSON_NRDISK */ 2644 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 2645 isa_dmastart(idf, bp->bio_data+fd->skip, 2646 format ? bp->bio_bcount : fdblk, fdc->dmachan); 2647#ifdef PC98 2648 blknum = bp->bio_pblkno * DEV_BSIZE / fdblk + fd->skip / fdblk; 2649#else 2650 blknum = bp->bio_pblkno + fd->skip / fdblk; 2651#endif 2652 sectrac = fd->ft->sectrac; 2653 sec = blknum % (sectrac * fd->ft->heads); 2654 head = sec / sectrac; 2655 sec = sec % sectrac + 1; 2656 if (head != 0 && fd->ft->offset_side2 != 0) 2657 sec += fd->ft->offset_side2; 2658 fd->hddrv = ((head&1)<<2)+fdu; 2659 2660 if(format || !(read || rdsectid)) 2661 { 2662 /* make sure the drive is writable */ 2663 if(fd_sense_drive_status(fdc, &st3) != 0) 2664 { 2665 /* stuck controller? */ 2666 if (!(fdc->flags & FDC_NODMA)) 2667 isa_dmadone(idf, 2668 bp->bio_data + fd->skip, 2669 format ? bp->bio_bcount : fdblk, 2670 fdc->dmachan); 2671 fdc->retry = 6; /* reset the beast */ 2672 return (retrier(fdc)); 2673 } 2674 if(st3 & NE7_ST3_WP) 2675 { 2676 /* 2677 * XXX YES! this is ugly. 2678 * in order to force the current operation 2679 * to fail, we will have to fake an FDC 2680 * error - all error handling is done 2681 * by the retrier() 2682 */ 2683 fdc->status[0] = NE7_ST0_IC_AT; 2684 fdc->status[1] = NE7_ST1_NW; 2685 fdc->status[2] = 0; 2686 fdc->status[3] = fd->track; 2687 fdc->status[4] = head; 2688 fdc->status[5] = sec; 2689 fdc->retry = 8; /* break out immediately */ 2690 fdc->state = IOTIMEDOUT; /* not really... */ 2691 return (1); /* will return immediately */ 2692 } 2693 } 2694 2695 if (format) { 2696 ne7cmd = NE7CMD_FORMAT | mfm; 2697 if (fdc->flags & FDC_NODMA) { 2698 /* 2699 * This seems to be necessary for 2700 * whatever obscure reason; if we omit 2701 * it, we end up filling the sector ID 2702 * fields of the newly formatted track 2703 * entirely with garbage, causing 2704 * `wrong cylinder' errors all over 2705 * the place when trying to read them 2706 * back. 2707 * 2708 * Umpf. 2709 */ 2710 SET_BCDR(fdc, 1, bp->bio_bcount, 0); 2711 2712 (void)fdcpio(fdc,bp->bio_cmd, 2713 bp->bio_data+fd->skip, 2714 bp->bio_bcount); 2715 2716 } 2717 /* formatting */ 2718 if(fd_cmd(fdc, 6, ne7cmd, head << 2 | fdu, 2719 finfo->fd_formb_secshift, 2720 finfo->fd_formb_nsecs, 2721 finfo->fd_formb_gaplen, 2722 finfo->fd_formb_fillbyte, 0)) { 2723 /* controller fell over */ 2724 if (!(fdc->flags & FDC_NODMA)) 2725 isa_dmadone(idf, 2726 bp->bio_data + fd->skip, 2727 format ? bp->bio_bcount : fdblk, 2728 fdc->dmachan); 2729 fdc->retry = 6; 2730 return (retrier(fdc)); 2731 } 2732 } else if (rdsectid) { 2733 ne7cmd = NE7CMD_READID | mfm; 2734 if (fd_cmd(fdc, 2, ne7cmd, head << 2 | fdu, 0)) { 2735 /* controller jamming */ 2736 fdc->retry = 6; 2737 return (retrier(fdc)); 2738 } 2739 } else { 2740 /* read or write operation */ 2741 ne7cmd = (read ? NE7CMD_READ | NE7CMD_SK : NE7CMD_WRITE) | mfm; 2742 if (fdc->flags & FDC_NODMA) { 2743 /* 2744 * This seems to be necessary even when 2745 * reading data. 2746 */ 2747 SET_BCDR(fdc, 1, fdblk, 0); 2748 2749 /* 2750 * Perform the write pseudo-DMA before 2751 * the WRITE command is sent. 2752 */ 2753 if (!read) 2754 (void)fdcpio(fdc,bp->bio_cmd, 2755 bp->bio_data+fd->skip, 2756 fdblk); 2757 } 2758 if (fd_cmd(fdc, 9, 2759 ne7cmd, 2760 head << 2 | fdu, /* head & unit */ 2761 fd->track, /* track */ 2762 head, 2763 sec, /* sector + 1 */ 2764 fd->ft->secsize, /* sector size */ 2765 sectrac, /* sectors/track */ 2766 fd->ft->gap, /* gap size */ 2767 fd->ft->datalen, /* data length */ 2768 0)) { 2769 /* the beast is sleeping again */ 2770 if (!(fdc->flags & FDC_NODMA)) 2771 isa_dmadone(idf, 2772 bp->bio_data + fd->skip, 2773 format ? bp->bio_bcount : fdblk, 2774 fdc->dmachan); 2775 fdc->retry = 6; 2776 return (retrier(fdc)); 2777 } 2778 } 2779 if (!rdsectid && (fdc->flags & FDC_NODMA)) 2780 /* 2781 * If this is a read, then simply await interrupt 2782 * before performing PIO. 2783 */ 2784 if (read && !fdcpio(fdc,bp->bio_cmd, 2785 bp->bio_data+fd->skip,fdblk)) { 2786 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 2787 return(0); /* will return later */ 2788 } 2789 2790 /* 2791 * Write (or format) operation will fall through and 2792 * await completion interrupt. 2793 */ 2794 fdc->state = IOCOMPLETE; 2795 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 2796 return (0); /* will return later */ 2797#ifdef EPSON_NRDISK 2798 } 2799 else { 2800 nrdblkn = (nrd_t)((unsigned long)bp->b_blkno*DEV_BSIZE/fdblk 2801 + fd->skip/fdblk); 2802 nrd_LED_on(); 2803 nrd_addrset(fdblk * nrdblkn); 2804 while (!nrd_check_ready()) DELAY(1); 2805 if (read) epson_insw(P_NRD_DATA, 2806 bp->bio_data + fd->skip, 2807 fdblk / sizeof(short)); 2808 else epson_outsw(P_NRD_DATA, 2809 bp->bio_data + fd->skip, 2810 (format ? bp->bio_bcount : fdblk) 2811 / sizeof(short)); 2812 2813 blknum = (unsigned long)bp->b_blkno*DEV_BSIZE/fdblk 2814 + fd->skip/fdblk; 2815 sectrac = fd->ft->sectrac; 2816 sec = blknum % (sectrac * fd->ft->heads); 2817 head = sec / sectrac; 2818 sec = sec % sectrac + 1; 2819 fd->hddrv = ((head&1)<<2)+fdu; 2820 2821 if (nrdsec++ >= nrd_sec()) 2822 nrdaddr = (nrd_t)(fd->track * 8 + head * 4); 2823 nrdsec = sec; 2824 fdc->state = IOCOMPLETE; 2825 } 2826#endif 2827 2828 case PIOREAD: 2829 /* 2830 * Actually perform the PIO read. The IOCOMPLETE case 2831 * removes the timeout for us. 2832 */ 2833 (void)fdcpio(fdc,bp->bio_cmd,bp->bio_data+fd->skip,fdblk); 2834 fdc->state = IOCOMPLETE; 2835 /* FALLTHROUGH */ 2836 case IOCOMPLETE: /* IO done, post-analyze */ 2837#ifdef EPSON_NRDISK 2838 if (fdu != nrdu) 2839 untimeout(fd_iotimeout, fdc, fd->tohandle); 2840#else 2841 untimeout(fd_iotimeout, fdc, fd->tohandle); 2842#endif 2843 2844 if (fd_read_status(fdc)) { 2845 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 2846 isa_dmadone(idf, bp->bio_data + fd->skip, 2847 format ? bp->bio_bcount : fdblk, 2848 fdc->dmachan); 2849 if (fdc->retry < 6) 2850 fdc->retry = 6; /* force a reset */ 2851 return (retrier(fdc)); 2852 } 2853 2854 fdc->state = IOTIMEDOUT; 2855 2856 /* FALLTHROUGH */ 2857 case IOTIMEDOUT: 2858#ifdef EPSON_NRDISK 2859 if (fdu != nrdu) { 2860#endif /* EPSON_NRDISK */ 2861 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 2862 isa_dmadone(idf, bp->bio_data + fd->skip, 2863 format ? bp->bio_bcount : fdblk, fdc->dmachan); 2864#ifdef EPSON_NRDISK 2865 } 2866 else nrd_LED_off(); 2867#endif /* EPSON_NRDISK */ 2868 if (fdc->status[0] & NE7_ST0_IC) { 2869 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2870 && fdc->status[1] & NE7_ST1_OR) { 2871 /* 2872 * DMA overrun. Someone hogged the bus and 2873 * didn't release it in time for the next 2874 * FDC transfer. 2875 * 2876 * We normally restart this without bumping 2877 * the retry counter. However, in case 2878 * something is seriously messed up (like 2879 * broken hardware), we rather limit the 2880 * number of retries so the IO operation 2881 * doesn't block indefinately. 2882 */ 2883 if (fdc->dma_overruns++ < FDC_DMAOV_MAX) { 2884 fdc->state = SEEKCOMPLETE; 2885 return (1);/* will return immediately */ 2886 } /* else fall through */ 2887 } 2888 if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV 2889 && fdc->retry < 6) 2890 fdc->retry = 6; /* force a reset */ 2891 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2892 && fdc->status[2] & NE7_ST2_WC 2893 && fdc->retry < 3) 2894 fdc->retry = 3; /* force recalibrate */ 2895 return (retrier(fdc)); 2896 } 2897 /* All OK */ 2898 if (rdsectid) { 2899 /* copy out ID field contents */ 2900 idp = (struct fdc_readid *)bp->bio_data; 2901 idp->cyl = fdc->status[3]; 2902 idp->head = fdc->status[4]; 2903 idp->sec = fdc->status[5]; 2904 idp->secshift = fdc->status[6]; 2905 } 2906 /* Operation successful, retry DMA overruns again next time. */ 2907 fdc->dma_overruns = 0; 2908 fd->skip += fdblk; 2909 if (!rdsectid && !format && fd->skip < bp->bio_bcount) { 2910 /* set up next transfer */ 2911 fdc->state = DOSEEK; 2912 } else { 2913 /* ALL DONE */ 2914 fd->skip = 0; 2915 bp->bio_resid = 0; 2916 fdc->bp = NULL; 2917 device_unbusy(fd->dev); 2918 biofinish(bp, &fd->device_stats, 0); 2919 fdc->fd = (fd_p) 0; 2920 fdc->fdu = -1; 2921 fdc->state = FINDWORK; 2922 } 2923 return (1); /* will return immediately */ 2924 2925 case RESETCTLR: 2926 fdc_reset(fdc); 2927 fdc->retry++; 2928 fdc->state = RESETCOMPLETE; 2929 return (0); /* will return later */ 2930 2931 case RESETCOMPLETE: 2932 /* 2933 * Discard all the results from the reset so that they 2934 * can't cause an unexpected interrupt later. 2935 */ 2936 for (i = 0; i < 4; i++) 2937 (void)fd_sense_int(fdc, &st0, &cyl); 2938 fdc->state = STARTRECAL; 2939 /* FALLTHROUGH */ 2940 case STARTRECAL: 2941#ifdef PC98 2942 pc98_fd_check_ready(fdu); 2943#endif 2944 if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) { 2945 /* arrgl */ 2946 fdc->retry = 6; 2947 return (retrier(fdc)); 2948 } 2949 fdc->state = RECALWAIT; 2950 return (0); /* will return later */ 2951 2952 case RECALWAIT: 2953 /* allow heads to settle */ 2954 timeout(fd_pseudointr, fdc, hz / 8); 2955 fdc->state = RECALCOMPLETE; 2956 return (0); /* will return later */ 2957 2958 case RECALCOMPLETE: 2959 do { 2960 /* 2961 * See SEEKCOMPLETE for a comment on this: 2962 */ 2963 if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 2964 return (0); /* will return later */ 2965 if(fdc->fdct == FDC_NE765 2966 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 2967 return (0); /* hope for a real intr */ 2968 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 2969#ifdef EPSON_NRDISK 2970 if (fdu == nrdu) { 2971 st0 = NE7_ST0_IC_NT; 2972 cyl = 0; 2973 } 2974#endif 2975 if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0) 2976 { 2977 if(fdc->retry > 3) 2978 /* 2979 * A recalibrate from beyond cylinder 77 2980 * will "fail" due to the FDC limitations; 2981 * since people used to complain much about 2982 * the failure message, try not logging 2983 * this one if it seems to be the first 2984 * time in a line. 2985 */ 2986 printf("fd%d: recal failed ST0 %b cyl %d\n", 2987 fdu, st0, NE7_ST0BITS, cyl); 2988 if(fdc->retry < 3) fdc->retry = 3; 2989 return (retrier(fdc)); 2990 } 2991 fd->track = 0; 2992 /* Seek (probably) necessary */ 2993 fdc->state = DOSEEK; 2994 return (1); /* will return immediately */ 2995 2996 case MOTORWAIT: 2997 if(fd->flags & FD_MOTOR_WAIT) 2998 { 2999 return (0); /* time's not up yet */ 3000 } 3001 if (fdc->flags & FDC_NEEDS_RESET) { 3002 fdc->state = RESETCTLR; 3003 fdc->flags &= ~FDC_NEEDS_RESET; 3004 } else 3005 fdc->state = DOSEEK; 3006 return (1); /* will return immediately */ 3007 3008 default: 3009 device_printf(fdc->fdc_dev, "unexpected FD int->"); 3010 if (fd_read_status(fdc) == 0) 3011 printf("FDC status :%x %x %x %x %x %x %x ", 3012 fdc->status[0], 3013 fdc->status[1], 3014 fdc->status[2], 3015 fdc->status[3], 3016 fdc->status[4], 3017 fdc->status[5], 3018 fdc->status[6] ); 3019 else 3020 printf("No status available "); 3021 if (fd_sense_int(fdc, &st0, &cyl) != 0) 3022 { 3023 printf("[controller is dead now]\n"); 3024 return (0); /* will return later */ 3025 } 3026 printf("ST0 = %x, PCN = %x\n", st0, cyl); 3027 return (0); /* will return later */ 3028 } 3029 /* noone should ever get here */ 3030} 3031 3032static int 3033retrier(struct fdc_data *fdc) 3034{ 3035 struct bio *bp; 3036 struct fd_data *fd; 3037 int fdu; 3038 3039 bp = fdc->bp; 3040 3041 /* XXX shouldn't this be cached somewhere? */ 3042 fdu = FDUNIT(minor(bp->bio_dev)); 3043 fd = devclass_get_softc(fd_devclass, fdu); 3044 if (fd->options & FDOPT_NORETRY) 3045 goto fail; 3046 3047 switch (fdc->retry) { 3048 case 0: case 1: case 2: 3049 fdc->state = SEEKCOMPLETE; 3050 break; 3051 case 3: case 4: case 5: 3052 fdc->state = STARTRECAL; 3053 break; 3054 case 6: 3055 fdc->state = RESETCTLR; 3056 break; 3057 case 7: 3058 break; 3059 default: 3060 fail: 3061 if ((fd->options & FDOPT_NOERRLOG) == 0) { 3062 disk_err(bp, "hard error", 3063 fdc->fd->skip / DEV_BSIZE, 0); 3064 if (fdc->flags & FDC_STAT_VALID) { 3065 printf( 3066 " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n", 3067 fdc->status[0], NE7_ST0BITS, 3068 fdc->status[1], NE7_ST1BITS, 3069 fdc->status[2], NE7_ST2BITS, 3070 fdc->status[3], fdc->status[4], 3071 fdc->status[5]); 3072 } 3073 else 3074 printf(" (No status)\n"); 3075 } 3076 if ((fd->options & FDOPT_NOERROR) == 0) { 3077 bp->bio_flags |= BIO_ERROR; 3078 bp->bio_error = EIO; 3079 bp->bio_resid = bp->bio_bcount - fdc->fd->skip; 3080 } else 3081 bp->bio_resid = 0; 3082 fdc->bp = NULL; 3083 fdc->fd->skip = 0; 3084 device_unbusy(fd->dev); 3085 biofinish(bp, &fdc->fd->device_stats, 0); 3086 fdc->state = FINDWORK; 3087 fdc->flags |= FDC_NEEDS_RESET; 3088 fdc->fd = (fd_p) 0; 3089 fdc->fdu = -1; 3090 return (1); 3091 } 3092 fdc->retry++; 3093 return (1); 3094} 3095 3096static void 3097fdbiodone(struct bio *bp) 3098{ 3099 wakeup(bp); 3100} 3101 3102static int 3103fdmisccmd(dev_t dev, u_int cmd, void *data) 3104{ 3105 fdu_t fdu; 3106 fd_p fd; 3107 struct bio *bp; 3108 struct fd_formb *finfo; 3109 struct fdc_readid *idfield; 3110 size_t fdblk; 3111 int error; 3112 3113 fdu = FDUNIT(minor(dev)); 3114 fd = devclass_get_softc(fd_devclass, fdu); 3115 fdblk = 128 << fd->ft->secsize; 3116 finfo = (struct fd_formb *)data; 3117 idfield = (struct fdc_readid *)data; 3118 3119 bp = malloc(sizeof(struct bio), M_TEMP, M_ZERO); 3120 3121 /* 3122 * Set up a bio request for fdstrategy(). bio_blkno is faked 3123 * so that fdstrategy() will seek to the the requested 3124 * cylinder, and use the desired head. 3125 */ 3126 bp->bio_cmd = cmd; 3127 if (cmd == FDBIO_FORMAT) { 3128 bp->bio_blkno = 3129 (finfo->cyl * (fd->ft->sectrac * fd->ft->heads) + 3130 finfo->head * fd->ft->sectrac) * 3131 fdblk / DEV_BSIZE; 3132 bp->bio_bcount = sizeof(struct fd_idfield_data) * 3133 finfo->fd_formb_nsecs; 3134 } else if (cmd == FDBIO_RDSECTID) { 3135 bp->bio_blkno = 3136 (idfield->cyl * (fd->ft->sectrac * fd->ft->heads) + 3137 idfield->head * fd->ft->sectrac) * 3138 fdblk / DEV_BSIZE; 3139 bp->bio_bcount = sizeof(struct fdc_readid); 3140 } else 3141 panic("wrong cmd in fdmisccmd()"); 3142 bp->bio_data = data; 3143 bp->bio_dev = dev; 3144 bp->bio_done = fdbiodone; 3145 bp->bio_flags = 0; 3146 3147 /* Now run the command. */ 3148 fdstrategy(bp); 3149 error = biowait(bp, "fdcmd"); 3150 3151 free(bp, M_TEMP); 3152 return (error); 3153} 3154 3155static int 3156fdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 3157{ 3158 fdu_t fdu; 3159 fd_p fd; 3160 struct fdc_status *fsp; 3161 struct fdc_readid *rid; 3162 size_t fdblk; 3163 int error, type; 3164 3165 fdu = FDUNIT(minor(dev)); 3166 type = FDTYPE(minor(dev)); 3167 fd = devclass_get_softc(fd_devclass, fdu); 3168 3169#ifdef PC98 3170 pc98_fd_check_ready(fdu); 3171#endif 3172 3173 /* 3174 * First, handle everything that could be done with 3175 * FD_NONBLOCK still being set. 3176 */ 3177 switch (cmd) { 3178 3179 case DIOCGMEDIASIZE: 3180 *(off_t *)addr = (128 << (fd->ft->secsize)) * fd->ft->size; 3181 return (0); 3182 3183 case DIOCGSECTORSIZE: 3184 *(u_int *)addr = 128 << (fd->ft->secsize); 3185 return (0); 3186 3187 case FIONBIO: 3188 if (*(int *)addr != 0) 3189 fd->flags |= FD_NONBLOCK; 3190 else { 3191 if (fd->ft == 0) { 3192 /* 3193 * No drive type has been selected yet, 3194 * cannot turn FNONBLOCK off. 3195 */ 3196 return (EINVAL); 3197 } 3198 fd->flags &= ~FD_NONBLOCK; 3199 } 3200 return (0); 3201 3202 case FIOASYNC: 3203 /* keep the generic fcntl() code happy */ 3204 return (0); 3205 3206 case FD_GTYPE: /* get drive type */ 3207 if (fd->ft == 0) 3208 /* no type known yet, return the native type */ 3209 *(struct fd_type *)addr = fd_native_types[fd->type]; 3210 else 3211 *(struct fd_type *)addr = *fd->ft; 3212 return (0); 3213 3214 case FD_STYPE: /* set drive type */ 3215 if (type == 0) { 3216 /* 3217 * Allow setting drive type temporarily iff 3218 * currently unset. Used for fdformat so any 3219 * user can set it, and then start formatting. 3220 */ 3221 if (fd->ft) 3222 return (EINVAL); /* already set */ 3223 fd->ft = fd->fts; 3224 *fd->ft = *(struct fd_type *)addr; 3225 fd->flags |= FD_UA; 3226 } else { 3227 /* 3228 * Set density definition permanently. Only 3229 * allow for superuser. 3230 */ 3231 if (suser(td) != 0) 3232 return (EPERM); 3233 fd->fts[type] = *(struct fd_type *)addr; 3234 } 3235 return (0); 3236 3237 case FD_GOPTS: /* get drive options */ 3238 *(int *)addr = fd->options + (type == 0? FDOPT_AUTOSEL: 0); 3239 return (0); 3240 3241 case FD_SOPTS: /* set drive options */ 3242 fd->options = *(int *)addr & ~FDOPT_AUTOSEL; 3243 return (0); 3244 3245#ifdef FDC_DEBUG 3246 case FD_DEBUG: 3247 if ((fd_debug != 0) != (*(int *)addr != 0)) { 3248 fd_debug = (*(int *)addr != 0); 3249 printf("fd%d: debugging turned %s\n", 3250 fd->fdu, fd_debug ? "on" : "off"); 3251 } 3252 return (0); 3253#endif 3254 3255 case FD_CLRERR: 3256 if (suser(td) != 0) 3257 return (EPERM); 3258 fd->fdc->fdc_errs = 0; 3259 return (0); 3260 3261 case FD_GSTAT: 3262 fsp = (struct fdc_status *)addr; 3263 if ((fd->fdc->flags & FDC_STAT_VALID) == 0) 3264 return (EINVAL); 3265 memcpy(fsp->status, fd->fdc->status, 7 * sizeof(u_int)); 3266 return (0); 3267 3268 case FD_GDTYPE: 3269 *(enum fd_drivetype *)addr = fd->type; 3270 return (0); 3271 } 3272 3273 /* 3274 * Now handle everything else. Make sure we have a valid 3275 * drive type. 3276 */ 3277 if (fd->flags & FD_NONBLOCK) 3278 return (EAGAIN); 3279 if (fd->ft == 0) 3280 return (ENXIO); 3281 fdblk = 128 << fd->ft->secsize; 3282 error = 0; 3283 3284 switch (cmd) { 3285 3286 case FD_FORM: 3287 if ((flag & FWRITE) == 0) 3288 return (EBADF); /* must be opened for writing */ 3289 if (((struct fd_formb *)addr)->format_version != 3290 FD_FORMAT_VERSION) 3291 return (EINVAL); /* wrong version of formatting prog */ 3292 error = fdmisccmd(dev, FDBIO_FORMAT, addr); 3293 break; 3294 3295 case FD_GTYPE: /* get drive type */ 3296 *(struct fd_type *)addr = *fd->ft; 3297 break; 3298 3299 case FD_STYPE: /* set drive type */ 3300 /* this is considered harmful; only allow for superuser */ 3301 if (suser(td) != 0) 3302 return (EPERM); 3303 *fd->ft = *(struct fd_type *)addr; 3304 break; 3305 3306 case FD_GOPTS: /* get drive options */ 3307 *(int *)addr = fd->options; 3308 break; 3309 3310 case FD_SOPTS: /* set drive options */ 3311 fd->options = *(int *)addr; 3312 break; 3313 3314#ifdef FDC_DEBUG 3315 case FD_DEBUG: 3316 if ((fd_debug != 0) != (*(int *)addr != 0)) { 3317 fd_debug = (*(int *)addr != 0); 3318 printf("fd%d: debugging turned %s\n", 3319 fd->fdu, fd_debug ? "on" : "off"); 3320 } 3321 break; 3322#endif 3323 3324 case FD_CLRERR: 3325 if (suser(td) != 0) 3326 return (EPERM); 3327 fd->fdc->fdc_errs = 0; 3328 break; 3329 3330 case FD_GSTAT: 3331 fsp = (struct fdc_status *)addr; 3332 if ((fd->fdc->flags & FDC_STAT_VALID) == 0) 3333 return (EINVAL); 3334 memcpy(fsp->status, fd->fdc->status, 7 * sizeof(u_int)); 3335 break; 3336 3337 case FD_READID: 3338 rid = (struct fdc_readid *)addr; 3339 if (rid->cyl > MAX_CYLINDER || rid->head > MAX_HEAD) 3340 return (EINVAL); 3341 error = fdmisccmd(dev, FDBIO_RDSECTID, addr); 3342 break; 3343 3344 default: 3345 error = ENOTTY; 3346 break; 3347 } 3348 return (error); 3349}
| 632}; 633 634/* 635 * Auxiliary functions. Well, some only. Others are scattered 636 * throughout the entire file. 637 */ 638static int 639fdc_err(struct fdc_data *fdc, const char *s) 640{ 641 fdc->fdc_errs++; 642 if (s) { 643 if (fdc->fdc_errs < FDC_ERRMAX) 644 device_printf(fdc->fdc_dev, "%s", s); 645 else if (fdc->fdc_errs == FDC_ERRMAX) 646 device_printf(fdc->fdc_dev, "too many errors, not " 647 "logging any more\n"); 648 } 649 650 return FD_FAILED; 651} 652 653/* 654 * fd_cmd: Send a command to the chip. Takes a varargs with this structure: 655 * Unit number, 656 * # of output bytes, output bytes as ints ..., 657 * # of input bytes, input bytes as ints ... 658 */ 659static int 660fd_cmd(struct fdc_data *fdc, int n_out, ...) 661{ 662 u_char cmd; 663 int n_in; 664 int n; 665 va_list ap; 666 667 va_start(ap, n_out); 668 cmd = (u_char)(va_arg(ap, int)); 669 va_end(ap); 670 va_start(ap, n_out); 671 for (n = 0; n < n_out; n++) 672 { 673 if (out_fdc(fdc, va_arg(ap, int)) < 0) 674 { 675 char msg[50]; 676 snprintf(msg, sizeof(msg), 677 "cmd %x failed at out byte %d of %d\n", 678 cmd, n + 1, n_out); 679 return fdc_err(fdc, msg); 680 } 681 } 682 n_in = va_arg(ap, int); 683 for (n = 0; n < n_in; n++) 684 { 685 int *ptr = va_arg(ap, int *); 686 if (fd_in(fdc, ptr) < 0) 687 { 688 char msg[50]; 689 snprintf(msg, sizeof(msg), 690 "cmd %02x failed at in byte %d of %d\n", 691 cmd, n + 1, n_in); 692 return fdc_err(fdc, msg); 693 } 694 } 695 696 return 0; 697} 698 699static int 700enable_fifo(fdc_p fdc) 701{ 702 int i, j; 703 704 if ((fdc->flags & FDC_HAS_FIFO) == 0) { 705 706 /* 707 * Cannot use fd_cmd the normal way here, since 708 * this might be an invalid command. Thus we send the 709 * first byte, and check for an early turn of data directon. 710 */ 711 712 if (out_fdc(fdc, I8207X_CONFIGURE) < 0) 713 return fdc_err(fdc, "Enable FIFO failed\n"); 714 715 /* If command is invalid, return */ 716 j = FDSTS_TIMEOUT; 717 while ((i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM)) 718 != NE7_RQM && j-- > 0) { 719 if (i == (NE7_DIO | NE7_RQM)) { 720 fdc_reset(fdc); 721 return FD_FAILED; 722 } 723 DELAY(1); 724 } 725 if (j<0 || 726 fd_cmd(fdc, 3, 727 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) { 728 fdc_reset(fdc); 729 return fdc_err(fdc, "Enable FIFO failed\n"); 730 } 731 fdc->flags |= FDC_HAS_FIFO; 732 return 0; 733 } 734 if (fd_cmd(fdc, 4, 735 I8207X_CONFIGURE, 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) 736 return fdc_err(fdc, "Re-enable FIFO failed\n"); 737 return 0; 738} 739 740static int 741fd_sense_drive_status(fdc_p fdc, int *st3p) 742{ 743 int st3; 744 745 if (fd_cmd(fdc, 2, NE7CMD_SENSED, fdc->fdu, 1, &st3)) 746 { 747 return fdc_err(fdc, "Sense Drive Status failed\n"); 748 } 749 if (st3p) 750 *st3p = st3; 751 752 return 0; 753} 754 755static int 756fd_sense_int(fdc_p fdc, int *st0p, int *cylp) 757{ 758 int cyl, st0, ret; 759 760#ifdef EPSON_NRDISK 761 if (fdc->fdu == nrdu) { 762 if (fdc->fd->track >= 0) nrdaddr = (fdc->fd->track + 1) * 8; 763 else nrdaddr = 0x0; 764 *st0p = nrd_head() ? NRD_ST0_HD : NRD_STATUS; 765 *cylp = nrd_trac(); 766 } 767 else { 768#endif /* EPSON_NRDISK */ 769 ret = fd_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0); 770 if (ret) { 771 (void)fdc_err(fdc, 772 "sense intr err reading stat reg 0\n"); 773 return ret; 774 } 775 776 if (st0p) 777 *st0p = st0; 778 779 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) { 780 /* 781 * There doesn't seem to have been an interrupt. 782 */ 783 return FD_NOT_VALID; 784 } 785 786 if (fd_in(fdc, &cyl) < 0) { 787 return fdc_err(fdc, "can't get cyl num\n"); 788 } 789 790 if (cylp) 791 *cylp = cyl; 792 793#ifdef EPSON_NRDISK 794 } 795#endif /* EPSON_NRDISK */ 796 return 0; 797} 798 799 800static int 801fd_read_status(fdc_p fdc) 802{ 803 int i, ret; 804 805 for (i = ret = 0; i < 7; i++) { 806 /* 807 * XXX types are poorly chosen. Only bytes can be read 808 * from the hardware, but fdc->status[] wants u_ints and 809 * fd_in() gives ints. 810 */ 811 int status; 812 813#ifdef EPSON_NRDISK 814 if (fdc->fdu == nrdu) { 815 switch (i) { 816 case 0: fdc->status[i] = nrd_head() 817 ? NRD_ST0_HD : NRD_STATUS; break; 818 case 1: fdc->status[i] = NRD_STATUS; break; 819 case 2: fdc->status[i] = NRD_STATUS; break; 820 case 3: fdc->status[i] = nrd_trac(); break; 821 case 4: fdc->status[i] = nrd_head(); break; 822 case 5: fdc->status[i] = nrdsec; break; 823 case 6: fdc->status[i] = nrd_secsize(); break; 824 } 825 ret = 0; 826 } 827 else { 828#endif /* EPSON_NRDISK */ 829 ret = fd_in(fdc, &status); 830 fdc->status[i] = status; 831 if (ret != 0) 832 break; 833#ifdef EPSON_NRDISK 834 } 835#endif /* EPSON_NRDISK */ 836 } 837 838 if (ret == 0) 839 fdc->flags |= FDC_STAT_VALID; 840 else 841 fdc->flags &= ~FDC_STAT_VALID; 842 843 return ret; 844} 845 846#ifdef PC98 847static int pc98_trans = 0; /* 0 : HD , 1 : DD , 2 : 1.44 */ 848static int pc98_trans_prev = 0; 849 850static void set_density(fdc_p fdc) 851{ 852 /* always motor on */ 853 bus_space_write_1(fdc->sc_fdsiot, fdc->sc_fdsioh, 0, 854 (pc98_trans != 1 ? FDP_FDDEXC : 0) | FDP_PORTEXC); 855 DELAY(100); 856 fdctl_wr(fdc, FDC_RST | FDC_DMAE); 857 /* in the case of note W, always inhibit 100ms timer */ 858} 859 860static int pc98_fd_check_ready(fdu_t fdu) 861{ 862 fd_p fd = devclass_get_softc(fd_devclass, fdu); 863 struct fdc_data *fdc = fd->fdc; 864 int retry = 0, status; 865 866#ifdef EPSON_NRDISK 867 if (fdu == nrdu) { 868 if (nrd_check_ready()) return 0; 869 else return -1; 870 } 871#endif 872 while (retry++ < 30000) { 873 set_motor(fdc, fd->fdsu, TURNON); 874 out_fdc(fdc, NE7CMD_SENSED); /* Sense Drive Status */ 875 DELAY(100); 876 out_fdc(fdc, fdu); /* Drive number */ 877 DELAY(100); 878 if ((fd_in(fdc, &status) == 0) && (status & NE7_ST3_RD)) { 879 fdctl_wr(fdc, FDC_DMAE | FDC_MTON); 880 DELAY(10); 881 return 0; 882 } 883 } 884 return -1; 885} 886#endif /* PC98 */ 887 888static int 889fdc_alloc_resources(struct fdc_data *fdc) 890{ 891 device_t dev; 892#ifdef PC98 893 int rid; 894#else 895 int ispnp, ispcmcia, nports; 896#endif 897 898 dev = fdc->fdc_dev; 899#ifndef PC98 900 ispnp = (fdc->flags & FDC_ISPNP) != 0; 901 ispcmcia = (fdc->flags & FDC_ISPCMCIA) != 0; 902#endif 903 fdc->rid_ioport = fdc->rid_irq = fdc->rid_drq = 0; 904 fdc->res_ioport = fdc->res_irq = fdc->res_drq = 0; 905 906#ifdef PC98 907 fdc->res_ioport = isa_alloc_resourcev(dev, SYS_RES_IOPORT, 908 &fdc->rid_ioport, fdc_iat, 909 3, RF_ACTIVE); 910 if (fdc->res_ioport == 0) { 911 device_printf(dev, "cannot reserve I/O port range\n"); 912 return ENXIO; 913 } 914 isa_load_resourcev(fdc->res_ioport, fdc_iat, 3); 915#else 916 /* 917 * On standard ISA, we don't just use an 8 port range 918 * (e.g. 0x3f0-0x3f7) since that covers an IDE control 919 * register at 0x3f6. 920 * 921 * Isn't PC hardware wonderful. 922 * 923 * The Y-E Data PCMCIA FDC doesn't have this problem, it 924 * uses the register with offset 6 for pseudo-DMA, and the 925 * one with offset 7 as control register. 926 */ 927 nports = ispcmcia ? 8 : (ispnp ? 1 : 6); 928 fdc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT, 929 &fdc->rid_ioport, 0ul, ~0ul, 930 nports, RF_ACTIVE); 931 if (fdc->res_ioport == 0) { 932 device_printf(dev, "cannot reserve I/O port range (%d ports)\n", 933 nports); 934 return ENXIO; 935 } 936#endif 937 fdc->portt = rman_get_bustag(fdc->res_ioport); 938 fdc->porth = rman_get_bushandle(fdc->res_ioport); 939 940#ifdef PC98 941 rid = 3; 942 bus_set_resource(dev, SYS_RES_IOPORT, rid, IO_FDPORT, 1); 943 fdc->res_fdsio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 944 1, RF_ACTIVE); 945 if (fdc->res_fdsio == 0) 946 return ENXIO; 947 fdc->sc_fdsiot = rman_get_bustag(fdc->res_fdsio); 948 fdc->sc_fdsioh = rman_get_bushandle(fdc->res_fdsio); 949 950 rid = 4; 951 bus_set_resource(dev, SYS_RES_IOPORT, rid, 0x4be, 1); 952 fdc->res_fdemsio = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 953 1, RF_ACTIVE); 954 if (fdc->res_fdemsio == 0) 955 return ENXIO; 956 fdc->sc_fdemsiot = rman_get_bustag(fdc->res_fdemsio); 957 fdc->sc_fdemsioh = rman_get_bushandle(fdc->res_fdemsio); 958#endif 959 960#ifndef PC98 961 if (!ispcmcia) { 962 /* 963 * Some BIOSen report the device at 0x3f2-0x3f5,0x3f7 964 * and some at 0x3f0-0x3f5,0x3f7. We detect the former 965 * by checking the size and adjust the port address 966 * accordingly. 967 */ 968 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 0) == 4) 969 fdc->port_off = -2; 970 971 /* 972 * Register the control port range as rid 1 if it 973 * isn't there already. Most PnP BIOSen will have 974 * already done this but non-PnP configurations don't. 975 * 976 * And some (!!) report 0x3f2-0x3f5 and completely 977 * leave out the control register! It seems that some 978 * non-antique controller chips have a different 979 * method of programming the transfer speed which 980 * doesn't require the control register, but it's 981 * mighty bogus as the chip still responds to the 982 * address for the control register. 983 */ 984 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 1) == 0) { 985 u_long ctlstart; 986 987 /* Find the control port, usually 0x3f7 */ 988 ctlstart = rman_get_start(fdc->res_ioport) + 989 fdc->port_off + 7; 990 991 bus_set_resource(dev, SYS_RES_IOPORT, 1, ctlstart, 1); 992 } 993 994 /* 995 * Now (finally!) allocate the control port. 996 */ 997 fdc->rid_ctl = 1; 998 fdc->res_ctl = bus_alloc_resource(dev, SYS_RES_IOPORT, 999 &fdc->rid_ctl, 1000 0ul, ~0ul, 1, RF_ACTIVE); 1001 if (fdc->res_ctl == 0) { 1002 device_printf(dev, 1003 "cannot reserve control I/O port range (control port)\n"); 1004 return ENXIO; 1005 } 1006 fdc->ctlt = rman_get_bustag(fdc->res_ctl); 1007 fdc->ctlh = rman_get_bushandle(fdc->res_ctl); 1008 } 1009#endif 1010 1011 fdc->res_irq = bus_alloc_resource(dev, SYS_RES_IRQ, 1012 &fdc->rid_irq, 0ul, ~0ul, 1, 1013 RF_ACTIVE); 1014 if (fdc->res_irq == 0) { 1015 device_printf(dev, "cannot reserve interrupt line\n"); 1016 return ENXIO; 1017 } 1018 1019 if ((fdc->flags & FDC_NODMA) == 0) { 1020 fdc->res_drq = bus_alloc_resource(dev, SYS_RES_DRQ, 1021 &fdc->rid_drq, 0ul, ~0ul, 1, 1022 RF_ACTIVE); 1023 if (fdc->res_drq == 0) { 1024 device_printf(dev, "cannot reserve DMA request line\n"); 1025 return ENXIO; 1026 } 1027 fdc->dmachan = fdc->res_drq->r_start; 1028 } 1029 1030 return 0; 1031} 1032 1033static void 1034fdc_release_resources(struct fdc_data *fdc) 1035{ 1036 device_t dev; 1037 1038 dev = fdc->fdc_dev; 1039 if (fdc->res_irq != 0) { 1040 bus_deactivate_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 1041 fdc->res_irq); 1042 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 1043 fdc->res_irq); 1044 } 1045#ifndef PC98 1046 if (fdc->res_ctl != 0) { 1047 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 1048 fdc->res_ctl); 1049 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 1050 fdc->res_ctl); 1051 } 1052#endif 1053#ifdef PC98 1054 if (fdc->res_fdsio != 0) { 1055 bus_deactivate_resource(dev, SYS_RES_IOPORT, 3, 1056 fdc->res_fdsio); 1057 bus_release_resource(dev, SYS_RES_IOPORT, 3, fdc->res_fdsio); 1058 } 1059 if (fdc->res_fdemsio != 0) { 1060 bus_deactivate_resource(dev, SYS_RES_IOPORT, 4, 1061 fdc->res_fdemsio); 1062 bus_release_resource(dev, SYS_RES_IOPORT, 4, fdc->res_fdemsio); 1063 } 1064#endif 1065 if (fdc->res_ioport != 0) { 1066 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 1067 fdc->res_ioport); 1068 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 1069 fdc->res_ioport); 1070 } 1071 if (fdc->res_drq != 0) { 1072 bus_deactivate_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 1073 fdc->res_drq); 1074 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 1075 fdc->res_drq); 1076 } 1077} 1078 1079/* 1080 * Configuration/initialization stuff, per controller. 1081 */ 1082 1083static struct isa_pnp_id fdc_ids[] = { 1084 {0x0007d041, "PC standard floppy disk controller"}, /* PNP0700 */ 1085 {0x0107d041, "Standard floppy controller supporting MS Device Bay Spec"}, /* PNP0701 */ 1086 {0} 1087}; 1088 1089static int 1090fdc_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 1091{ 1092 struct fdc_ivars *ivars = device_get_ivars(child); 1093 1094 switch (which) { 1095 case FDC_IVAR_FDUNIT: 1096 *result = ivars->fdunit; 1097 break; 1098 default: 1099 return ENOENT; 1100 } 1101 return 0; 1102} 1103 1104static int 1105fdc_probe(device_t dev) 1106{ 1107#ifdef PC98 1108 int error; 1109#else 1110 int error, ic_type; 1111#endif 1112 struct fdc_data *fdc; 1113 1114 fdc = device_get_softc(dev); 1115 bzero(fdc, sizeof *fdc); 1116 fdc->fdc_dev = dev; 1117#ifndef PC98 1118 fdc->fdctl_wr = fdctl_wr_isa; 1119#endif 1120 1121 /* Check pnp ids */ 1122 error = ISA_PNP_PROBE(device_get_parent(dev), dev, fdc_ids); 1123 if (error == ENXIO) 1124 return ENXIO; 1125 if (error == 0) 1126 fdc->flags |= FDC_ISPNP; 1127 1128 /* Attempt to allocate our resources for the duration of the probe */ 1129 error = fdc_alloc_resources(fdc); 1130 if (error) 1131 goto out; 1132 1133#ifndef PC98 1134 /* First - lets reset the floppy controller */ 1135 fdout_wr(fdc, 0); 1136 DELAY(100); 1137 fdout_wr(fdc, FDO_FRST); 1138#endif 1139 1140 /* see if it can handle a command */ 1141#ifdef PC98 1142 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(4, 240), 1143 NE7_SPEC_2(2, 0), 0)) { 1144 error = ENXIO; 1145 goto out; 1146 } 1147#else 1148 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 1149 NE7_SPEC_2(2, 0), 0)) { 1150 error = ENXIO; 1151 goto out; 1152 } 1153#endif 1154 1155#ifndef PC98 1156 if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) { 1157 ic_type = (u_char)ic_type; 1158 switch (ic_type) { 1159 case 0x80: 1160 device_set_desc(dev, "NEC 765 or clone"); 1161 fdc->fdct = FDC_NE765; 1162 break; 1163 case 0x81: /* not mentioned in any hardware doc */ 1164 case 0x90: 1165 device_set_desc(dev, 1166 "Enhanced floppy controller (i82077, NE72065 or clone)"); 1167 fdc->fdct = FDC_ENHANCED; 1168 break; 1169 default: 1170 device_set_desc(dev, "Generic floppy controller"); 1171 fdc->fdct = FDC_UNKNOWN; 1172 break; 1173 } 1174 } 1175#endif 1176 1177out: 1178 fdc_release_resources(fdc); 1179 return (error); 1180} 1181 1182#if NCARD > 0 1183 1184static int 1185fdc_pccard_probe(device_t dev) 1186{ 1187 int error; 1188 struct fdc_data *fdc; 1189 1190 fdc = device_get_softc(dev); 1191 bzero(fdc, sizeof *fdc); 1192 fdc->fdc_dev = dev; 1193#ifndef PC98 1194 fdc->fdctl_wr = fdctl_wr_pcmcia; 1195#endif 1196 1197 fdc->flags |= FDC_ISPCMCIA | FDC_NODMA; 1198 1199 /* Attempt to allocate our resources for the duration of the probe */ 1200 error = fdc_alloc_resources(fdc); 1201 if (error) 1202 goto out; 1203 1204#ifndef PC98 1205 /* First - lets reset the floppy controller */ 1206 fdout_wr(fdc, 0); 1207 DELAY(100); 1208 fdout_wr(fdc, FDO_FRST); 1209#endif 1210 1211 /* see if it can handle a command */ 1212#ifdef PC98 1213 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(4, 240), 1214 NE7_SPEC_2(2, 0), 0)) { 1215 error = ENXIO; 1216 goto out; 1217 } 1218#else 1219 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 1220 NE7_SPEC_2(2, 0), 0)) { 1221 error = ENXIO; 1222 goto out; 1223 } 1224#endif 1225 1226 device_set_desc(dev, "Y-E Data PCMCIA floppy"); 1227 fdc->fdct = FDC_NE765; 1228 1229out: 1230 fdc_release_resources(fdc); 1231 return (error); 1232} 1233 1234#endif /* NCARD > 0 */ 1235 1236static int 1237fdc_detach(device_t dev) 1238{ 1239 struct fdc_data *fdc; 1240 int error; 1241 1242 fdc = device_get_softc(dev); 1243 1244 /* have our children detached first */ 1245 if ((error = bus_generic_detach(dev))) 1246 return (error); 1247 1248#ifdef PC98 1249 /* reset controller, turn motor off */ 1250 fdc_reset(fdc); 1251#else 1252 /* reset controller, turn motor off */ 1253 fdout_wr(fdc, 0); 1254#endif 1255 1256 if ((fdc->flags & FDC_NODMA) == 0) 1257 isa_dma_release(fdc->dmachan); 1258 1259 if ((fdc->flags & FDC_ATTACHED) == 0) { 1260 device_printf(dev, "already unloaded\n"); 1261 return (0); 1262 } 1263 fdc->flags &= ~FDC_ATTACHED; 1264 1265 BUS_TEARDOWN_INTR(device_get_parent(dev), dev, fdc->res_irq, 1266 fdc->fdc_intr); 1267 fdc_release_resources(fdc); 1268 device_printf(dev, "unload\n"); 1269 return (0); 1270} 1271 1272/* 1273 * Add a child device to the fdc controller. It will then be probed etc. 1274 */ 1275static void 1276fdc_add_child(device_t dev, const char *name, int unit) 1277{ 1278 int disabled, flags; 1279 struct fdc_ivars *ivar; 1280 device_t child; 1281 1282 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT | M_ZERO); 1283 if (ivar == NULL) 1284 return; 1285 if (resource_int_value(name, unit, "drive", &ivar->fdunit) != 0) 1286 ivar->fdunit = 0; 1287 child = device_add_child(dev, name, unit); 1288 if (child == NULL) { 1289 free(ivar, M_DEVBUF); 1290 return; 1291 } 1292 device_set_ivars(child, ivar); 1293 if (resource_int_value(name, unit, "flags", &flags) == 0) 1294 device_set_flags(child, flags); 1295 if (resource_int_value(name, unit, "disabled", &disabled) == 0 1296 && disabled != 0) 1297 device_disable(child); 1298} 1299 1300static int 1301fdc_attach(device_t dev) 1302{ 1303 struct fdc_data *fdc; 1304 const char *name, *dname; 1305 int i, error, dunit; 1306 1307 fdc = device_get_softc(dev); 1308 error = fdc_alloc_resources(fdc); 1309 if (error) { 1310 device_printf(dev, "cannot re-acquire resources\n"); 1311 return error; 1312 } 1313 error = BUS_SETUP_INTR(device_get_parent(dev), dev, fdc->res_irq, 1314 INTR_TYPE_BIO | INTR_ENTROPY, fdc_intr, fdc, 1315 &fdc->fdc_intr); 1316 if (error) { 1317 device_printf(dev, "cannot setup interrupt\n"); 1318 return error; 1319 } 1320 fdc->fdcu = device_get_unit(dev); 1321 fdc->flags |= FDC_ATTACHED | FDC_NEEDS_RESET; 1322 1323 if ((fdc->flags & FDC_NODMA) == 0) { 1324 /* 1325 * Acquire the DMA channel forever, the driver will do 1326 * the rest 1327 * XXX should integrate with rman 1328 */ 1329 isa_dma_acquire(fdc->dmachan); 1330 isa_dmainit(fdc->dmachan, MAX_SEC_SIZE); 1331 } 1332 fdc->state = DEVIDLE; 1333 1334#ifdef PC98 1335 /* reset controller, turn motor off, clear fdout mirror reg */ 1336 fdc_reset(fdc); 1337#else 1338 /* reset controller, turn motor off, clear fdout mirror reg */ 1339 fdout_wr(fdc, fdc->fdout = 0); 1340#endif 1341 bioq_init(&fdc->head); 1342 1343 /* 1344 * Probe and attach any children. We should probably detect 1345 * devices from the BIOS unless overridden. 1346 */ 1347 name = device_get_nameunit(dev); 1348 i = 0; 1349 while ((resource_find_match(&i, &dname, &dunit, "at", name)) == 0) 1350 fdc_add_child(dev, dname, dunit); 1351 1352 if ((error = bus_generic_attach(dev)) != 0) 1353 return (error); 1354 1355 return (0); 1356} 1357 1358static int 1359fdc_print_child(device_t me, device_t child) 1360{ 1361 int retval = 0, flags; 1362 1363 retval += bus_print_child_header(me, child); 1364 retval += printf(" on %s drive %d", device_get_nameunit(me), 1365 fdc_get_fdunit(child)); 1366 if ((flags = device_get_flags(me)) != 0) 1367 retval += printf(" flags %#x", flags); 1368 retval += printf("\n"); 1369 1370 return (retval); 1371} 1372 1373static device_method_t fdc_methods[] = { 1374 /* Device interface */ 1375 DEVMETHOD(device_probe, fdc_probe), 1376 DEVMETHOD(device_attach, fdc_attach), 1377 DEVMETHOD(device_detach, fdc_detach), 1378 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1379 DEVMETHOD(device_suspend, bus_generic_suspend), 1380 DEVMETHOD(device_resume, bus_generic_resume), 1381 1382 /* Bus interface */ 1383 DEVMETHOD(bus_print_child, fdc_print_child), 1384 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 1385 /* Our children never use any other bus interface methods. */ 1386 1387 { 0, 0 } 1388}; 1389 1390static driver_t fdc_driver = { 1391 "fdc", 1392 fdc_methods, 1393 sizeof(struct fdc_data) 1394}; 1395 1396DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0); 1397#ifndef PC98 1398DRIVER_MODULE(fdc, acpi, fdc_driver, fdc_devclass, 0, 0); 1399#endif 1400 1401#if NCARD > 0 1402 1403static device_method_t fdc_pccard_methods[] = { 1404 /* Device interface */ 1405 DEVMETHOD(device_probe, fdc_pccard_probe), 1406 DEVMETHOD(device_attach, fdc_attach), 1407 DEVMETHOD(device_detach, fdc_detach), 1408 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1409 DEVMETHOD(device_suspend, bus_generic_suspend), 1410 DEVMETHOD(device_resume, bus_generic_resume), 1411 1412 /* Bus interface */ 1413 DEVMETHOD(bus_print_child, fdc_print_child), 1414 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 1415 /* Our children never use any other bus interface methods. */ 1416 1417 { 0, 0 } 1418}; 1419 1420static driver_t fdc_pccard_driver = { 1421 "fdc", 1422 fdc_pccard_methods, 1423 sizeof(struct fdc_data) 1424}; 1425 1426DRIVER_MODULE(fdc, pccard, fdc_pccard_driver, fdc_devclass, 0, 0); 1427 1428#endif /* NCARD > 0 */ 1429 1430/* 1431 * Create a clone device upon request by devfs. 1432 */ 1433static void 1434fd_clone(void *arg, char *name, int namelen, dev_t *dev) 1435{ 1436 struct fd_data *fd; 1437 int i, u; 1438 char *n; 1439 size_t l; 1440 1441 fd = (struct fd_data *)arg; 1442 if (*dev != NODEV) 1443 return; 1444 if (dev_stdclone(name, &n, "fd", &u) != 2) 1445 return; 1446 if (u != fd->fdu) 1447 /* unit # mismatch */ 1448 return; 1449 l = strlen(n); 1450 if (l == 1 && *n >= 'a' && *n <= 'h') { 1451 /* 1452 * Trailing letters a through h denote 1453 * pseudo-partitions. We don't support true 1454 * (UFS-style) partitions, so we just implement them 1455 * as symlinks if someone asks us nicely. 1456 */ 1457 *dev = make_dev_alias(fd->masterdev, name); 1458 return; 1459 } 1460 if (l >= 2 && l <= 5 && *n == '.') { 1461 /* 1462 * Trailing numbers, preceded by a dot, denote 1463 * subdevices for different densities. Historically, 1464 * they have been named by density (like fd0.1440), 1465 * but we allow arbitrary numbers between 1 and 4 1466 * digits, so fd0.1 through fd0.15 are possible as 1467 * well. 1468 */ 1469 for (i = 1; i < l; i++) 1470 if (n[i] < '0' || n[i] > '9') 1471 return; 1472 for (i = 0; i < NUMDENS - 1; i++) 1473 if (fd->clonedevs[i] == NODEV) { 1474 *dev = make_dev(&fd_cdevsw, 1475 FDNUMTOUNIT(u) + i + 1, 1476 UID_ROOT, GID_OPERATOR, 0640, 1477 name); 1478 fd->clonedevs[i] = *dev; 1479 return; 1480 } 1481 } 1482} 1483 1484/* 1485 * Configuration/initialization, per drive. 1486 */ 1487static int 1488fd_probe(device_t dev) 1489{ 1490 int i; 1491#ifndef PC98 1492 u_int st0, st3; 1493#endif 1494 struct fd_data *fd; 1495 struct fdc_data *fdc; 1496 fdsu_t fdsu; 1497 int flags; 1498 1499 fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */ 1500 fd = device_get_softc(dev); 1501 fdc = device_get_softc(device_get_parent(dev)); 1502 flags = device_get_flags(dev); 1503 1504 bzero(fd, sizeof *fd); 1505 fd->dev = dev; 1506 fd->fdc = fdc; 1507 fd->fdsu = fdsu; 1508 fd->fdu = device_get_unit(dev); 1509 fd->flags = FD_UA; /* make sure fdautoselect() will be called */ 1510 1511 fd->type = FD_DTYPE(flags); 1512#ifdef PC98 1513 if (fd->type == FDT_NONE && fd->fdu >= 0 && fd->fdu <= 3) { 1514 /* Look up what the BIOS thinks we have. */ 1515 if ((PC98_SYSTEM_PARAMETER(0x5ae) >> fd->fdu) & 0x01) 1516 fd->type = FDT_144M; 1517#ifdef EPSON_NRDISK 1518 else if ((PC98_SYSTEM_PARAMETER(0x55c) >> fd->fdu) & 0x01) { 1519 fd->type = FDT_12M; 1520 switch (epson_machine_id) { 1521 case 0x20: 1522 case 0x27: 1523 if ((PC98_SYSTEM_PARAMETER(0x488) >> fd->fdu) 1524 & 0x01) { 1525 if (nrd_check_ready()) { 1526 nrd_LED_on(); 1527 nrdu = fd->fdu; 1528 } else { 1529 fd->type = FDT_NONE; 1530 } 1531 } 1532 break; 1533 } 1534 } 1535#else /* !EPSON_NRDISK */ 1536 else if ((PC98_SYSTEM_PARAMETER(0x55c) >> fd->fdu) & 0x01) { 1537 fd->type = FDT_12M; 1538 switch (epson_machine_id) { 1539 case 0x20: 1540 case 0x27: 1541 if ((PC98_SYSTEM_PARAMETER(0x488) >> fd->fdu) 1542 & 0x01) 1543 fd->type = FDT_NONE; 1544 break; 1545 } 1546 } 1547#endif /* EPSON_NRDISK */ 1548 } 1549#else /* PC98 */ 1550/* 1551 * XXX I think using __i386__ is wrong here since we actually want to probe 1552 * for the machine type, not the CPU type (so non-PC arch's like the PC98 will 1553 * fail the probe). However, for whatever reason, testing for _MACHINE_ARCH 1554 * == i386 breaks the test on FreeBSD/Alpha. 1555 */ 1556#ifdef __i386__ 1557 if (fd->type == FDT_NONE && (fd->fdu == 0 || fd->fdu == 1)) { 1558 /* Look up what the BIOS thinks we have. */ 1559 if (fd->fdu == 0) { 1560 if ((fdc->flags & FDC_ISPCMCIA)) 1561 /* 1562 * Somewhat special. No need to force the 1563 * user to set device flags, since the Y-E 1564 * Data PCMCIA floppy is always a 1.44 MB 1565 * device. 1566 */ 1567 fd->type = FDT_144M; 1568 else 1569 fd->type = (rtcin(RTC_FDISKETTE) & 0xf0) >> 4; 1570 } else { 1571 fd->type = rtcin(RTC_FDISKETTE) & 0x0f; 1572 } 1573 if (fd->type == FDT_288M_1) 1574 fd->type = FDT_288M; 1575 } 1576#endif /* __i386__ */ 1577#endif /* PC98 */ 1578 1579 /* is there a unit? */ 1580 if (fd->type == FDT_NONE) 1581 return (ENXIO); 1582 1583#ifndef PC98 1584 /* select it */ 1585 set_motor(fdc, fdsu, TURNON); 1586 fdc_reset(fdc); /* XXX reset, then unreset, etc. */ 1587 DELAY(1000000); /* 1 sec */ 1588 1589 /* XXX This doesn't work before the first set_motor() */ 1590 if ((fdc->flags & FDC_HAS_FIFO) == 0 && 1591 fdc->fdct == FDC_ENHANCED && 1592 (device_get_flags(fdc->fdc_dev) & FDC_NO_FIFO) == 0 && 1593 enable_fifo(fdc) == 0) { 1594 device_printf(device_get_parent(dev), 1595 "FIFO enabled, %d bytes threshold\n", fifo_threshold); 1596 } 1597 1598 if ((flags & FD_NO_PROBE) == 0) { 1599 /* If we're at track 0 first seek inwards. */ 1600 if ((fd_sense_drive_status(fdc, &st3) == 0) && 1601 (st3 & NE7_ST3_T0)) { 1602 /* Seek some steps... */ 1603 if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 1604 /* ...wait a moment... */ 1605 DELAY(300000); 1606 /* make ctrlr happy: */ 1607 fd_sense_int(fdc, 0, 0); 1608 } 1609 } 1610 1611 for (i = 0; i < 2; i++) { 1612 /* 1613 * we must recalibrate twice, just in case the 1614 * heads have been beyond cylinder 76, since 1615 * most FDCs still barf when attempting to 1616 * recalibrate more than 77 steps 1617 */ 1618 /* go back to 0: */ 1619 if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 1620 /* a second being enough for full stroke seek*/ 1621 DELAY(i == 0 ? 1000000 : 300000); 1622 1623 /* anything responding? */ 1624 if (fd_sense_int(fdc, &st0, 0) == 0 && 1625 (st0 & NE7_ST0_EC) == 0) 1626 break; /* already probed succesfully */ 1627 } 1628 } 1629 } 1630 1631 set_motor(fdc, fdsu, TURNOFF); 1632 1633 if ((flags & FD_NO_PROBE) == 0 && 1634 (st0 & NE7_ST0_EC) != 0) /* no track 0 -> no drive present */ 1635 return (ENXIO); 1636#endif /* PC98 */ 1637 1638#ifdef PC98 1639 switch (fd->type) { 1640 case FDT_144M: 1641 /* Check 3mode I/F */ 1642 fd->pc98_trans = 0; 1643 bus_space_write_1(fdc->sc_fdemsiot, fdc->sc_fdemsioh, 0, 1644 (fd->fdu << 5) | 0x10); 1645 if (!(bus_space_read_1(fdc->sc_fdemsiot, fdc->sc_fdemsioh, 0) & 1646 0x01)) { 1647 device_set_desc(dev, "1.44M FDD"); 1648 fd->type = FDT_144M; 1649 break; 1650 } 1651 1652 device_printf(dev, 1653 "Warning: can't control 3mode I/F, fallback to 2mode.\n"); 1654 /* FALLTHROUGH */ 1655 case FDT_12M: 1656#ifdef EPSON_NRDISK 1657 if (fd->fdu == nrdu) { 1658 device_set_desc(dev, "EPSON RAM DRIVE"); 1659 nrd_LED_off(); 1660 } else 1661 device_set_desc(dev, "1M/640K FDD"); 1662#else 1663 device_set_desc(dev, "1M/640K FDD"); 1664#endif 1665 fd->type = FDT_12M; 1666 break; 1667 default: 1668 return (ENXIO); 1669 } 1670#else 1671 switch (fd->type) { 1672 case FDT_12M: 1673 device_set_desc(dev, "1200-KB 5.25\" drive"); 1674 fd->type = FDT_12M; 1675 break; 1676 case FDT_144M: 1677 device_set_desc(dev, "1440-KB 3.5\" drive"); 1678 fd->type = FDT_144M; 1679 break; 1680 case FDT_288M: 1681 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); 1682 fd->type = FDT_288M; 1683 break; 1684 case FDT_360K: 1685 device_set_desc(dev, "360-KB 5.25\" drive"); 1686 fd->type = FDT_360K; 1687 break; 1688 case FDT_720K: 1689 device_set_desc(dev, "720-KB 3.5\" drive"); 1690 fd->type = FDT_720K; 1691 break; 1692 default: 1693 return (ENXIO); 1694 } 1695#endif 1696 fd->track = FD_NO_TRACK; 1697 fd->fdc = fdc; 1698 fd->fdsu = fdsu; 1699 fd->options = 0; 1700#ifdef PC98 1701 fd->pc98_trans = 0; 1702#endif 1703 callout_handle_init(&fd->toffhandle); 1704 callout_handle_init(&fd->tohandle); 1705 1706 /* initialize densities for subdevices */ 1707#ifdef PC98 1708 for (i = 0; i < NUMDENS; i++) 1709 memcpy(fd->fts + i, fd_searchlist_144m + i, 1710 sizeof(struct fd_type)); 1711#else 1712 for (i = 0; i < NUMDENS; i++) 1713 memcpy(fd->fts + i, fd_native_types + fd->type, 1714 sizeof(struct fd_type)); 1715#endif 1716 return (0); 1717} 1718 1719static int 1720fd_attach(device_t dev) 1721{ 1722 struct fd_data *fd; 1723 int i; 1724 1725 fd = device_get_softc(dev); 1726 fd->clonetag = EVENTHANDLER_REGISTER(dev_clone, fd_clone, fd, 1000); 1727 fd->masterdev = make_dev(&fd_cdevsw, fd->fdu << 6, 1728 UID_ROOT, GID_OPERATOR, 0640, "fd%d", fd->fdu); 1729 for (i = 0; i < NUMDENS - 1; i++) 1730 fd->clonedevs[i] = NODEV; 1731 devstat_add_entry(&fd->device_stats, device_get_name(dev), 1732 device_get_unit(dev), 0, DEVSTAT_NO_ORDERED_TAGS, 1733 DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER, 1734 DEVSTAT_PRIORITY_FD); 1735 return (0); 1736} 1737 1738static int 1739fd_detach(device_t dev) 1740{ 1741 struct fd_data *fd; 1742 int i; 1743 1744 fd = device_get_softc(dev); 1745 untimeout(fd_turnoff, fd, fd->toffhandle); 1746 devstat_remove_entry(&fd->device_stats); 1747 destroy_dev(fd->masterdev); 1748 for (i = 0; i < NUMDENS - 1; i++) 1749 if (fd->clonedevs[i] != NODEV) 1750 destroy_dev(fd->clonedevs[i]); 1751 EVENTHANDLER_DEREGISTER(dev_clone, fd->clonetag); 1752 1753 return (0); 1754} 1755 1756static device_method_t fd_methods[] = { 1757 /* Device interface */ 1758 DEVMETHOD(device_probe, fd_probe), 1759 DEVMETHOD(device_attach, fd_attach), 1760 DEVMETHOD(device_detach, fd_detach), 1761 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1762 DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ 1763 DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ 1764 1765 { 0, 0 } 1766}; 1767 1768static driver_t fd_driver = { 1769 "fd", 1770 fd_methods, 1771 sizeof(struct fd_data) 1772}; 1773 1774DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, 0, 0); 1775 1776/* 1777 * More auxiliary functions. 1778 */ 1779/* 1780 * Motor control stuff. 1781 * Remember to not deselect the drive we're working on. 1782 */ 1783static void 1784set_motor(struct fdc_data *fdc, int fdsu, int turnon) 1785{ 1786#ifdef PC98 1787 bus_space_write_1(fdc->sc_fdsiot, fdc->sc_fdsioh, 0, 1788 (pc98_trans != 1 ? FDP_FDDEXC : 0) | FDP_PORTEXC); 1789 DELAY(10); 1790 fdctl_wr(fdc, FDC_DMAE | FDC_MTON); 1791#else 1792 int fdout; 1793 1794 fdout = fdc->fdout; 1795 if (turnon) { 1796 fdout &= ~FDO_FDSEL; 1797 fdout |= (FDO_MOEN0 << fdsu) | FDO_FDMAEN | FDO_FRST | fdsu; 1798 } else 1799 fdout &= ~(FDO_MOEN0 << fdsu); 1800 fdc->fdout = fdout; 1801 fdout_wr(fdc, fdout); 1802 TRACE1("[0x%x->FDOUT]", fdout); 1803#endif 1804} 1805 1806static void 1807fd_turnoff(void *xfd) 1808{ 1809 int s; 1810 fd_p fd = xfd; 1811 1812 TRACE1("[fd%d: turnoff]", fd->fdu); 1813 1814 s = splbio(); 1815 /* 1816 * Don't turn off the motor yet if the drive is active. 1817 * 1818 * If we got here, this could only mean we missed an interrupt. 1819 * This can e. g. happen on the Y-E Date PCMCIA floppy controller 1820 * after a controller reset. Just schedule a pseudo-interrupt 1821 * so the state machine gets re-entered. 1822 */ 1823 if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) { 1824 fdc_intr(fd->fdc); 1825 splx(s); 1826 return; 1827 } 1828 1829 fd->flags &= ~FD_MOTOR; 1830 set_motor(fd->fdc, fd->fdsu, TURNOFF); 1831 splx(s); 1832} 1833 1834static void 1835fd_motor_on(void *xfd) 1836{ 1837 int s; 1838 fd_p fd = xfd; 1839 1840 s = splbio(); 1841 fd->flags &= ~FD_MOTOR_WAIT; 1842 if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT)) 1843 { 1844 fdc_intr(fd->fdc); 1845 } 1846 splx(s); 1847} 1848 1849static void 1850fd_turnon(fd_p fd) 1851{ 1852 if(!(fd->flags & FD_MOTOR)) 1853 { 1854 fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT); 1855 set_motor(fd->fdc, fd->fdsu, TURNON); 1856 timeout(fd_motor_on, fd, hz); /* in 1 sec its ok */ 1857 } 1858} 1859 1860static void 1861fdc_reset(fdc_p fdc) 1862{ 1863 /* Try a reset, keep motor on */ 1864#ifdef PC98 1865 set_density(fdc); 1866 if (pc98_machine_type & M_EPSON_PC98) 1867 fdctl_wr(fdc, FDC_RST | FDC_RDY | FDC_DD | FDC_MTON); 1868 else 1869 fdctl_wr(fdc, FDC_RST | FDC_RDY | FDC_DMAE | FDC_MTON); 1870 DELAY(200); 1871 fdctl_wr(fdc, FDC_DMAE | FDC_MTON); 1872 DELAY(10); 1873#else 1874 fdout_wr(fdc, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1875 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1876 DELAY(100); 1877 /* enable FDC, but defer interrupts a moment */ 1878 fdout_wr(fdc, fdc->fdout & ~FDO_FDMAEN); 1879 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN); 1880 DELAY(100); 1881 fdout_wr(fdc, fdc->fdout); 1882 TRACE1("[0x%x->FDOUT]", fdc->fdout); 1883#endif 1884 1885 /* XXX after a reset, silently believe the FDC will accept commands */ 1886#ifdef PC98 1887 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1888 NE7_SPEC_1(4, 240), NE7_SPEC_2(2, 0), 1889 0); 1890#else 1891 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1892 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1893 0); 1894#endif 1895 if (fdc->flags & FDC_HAS_FIFO) 1896 (void) enable_fifo(fdc); 1897} 1898 1899/* 1900 * FDC IO functions, take care of the main status register, timeout 1901 * in case the desired status bits are never set. 1902 * 1903 * These PIO loops initially start out with short delays between 1904 * each iteration in the expectation that the required condition 1905 * is usually met quickly, so it can be handled immediately. After 1906 * about 1 ms, stepping is increased to achieve a better timing 1907 * accuracy in the calls to DELAY(). 1908 */ 1909static int 1910fd_in(struct fdc_data *fdc, int *ptr) 1911{ 1912 int i, j, step; 1913 1914 for (j = 0, step = 1; 1915 (i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) != (NE7_DIO|NE7_RQM) && 1916 j < FDSTS_TIMEOUT; 1917 j += step) { 1918 if (i == NE7_RQM) 1919 return (fdc_err(fdc, "ready for output in input\n")); 1920 if (j == 1000) 1921 step = 1000; 1922 DELAY(step); 1923 } 1924 if (j >= FDSTS_TIMEOUT) 1925 return (fdc_err(fdc, bootverbose? "input ready timeout\n": 0)); 1926#ifdef FDC_DEBUG 1927 i = fddata_rd(fdc); 1928 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1929 *ptr = i; 1930 return (0); 1931#else /* !FDC_DEBUG */ 1932 i = fddata_rd(fdc); 1933 if (ptr) 1934 *ptr = i; 1935 return (0); 1936#endif /* FDC_DEBUG */ 1937} 1938 1939static int 1940out_fdc(struct fdc_data *fdc, int x) 1941{ 1942 int i, j, step; 1943 1944 for (j = 0, step = 1; 1945 (i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) != NE7_RQM && 1946 j < FDSTS_TIMEOUT; 1947 j += step) { 1948 if (i == (NE7_DIO|NE7_RQM)) 1949 return (fdc_err(fdc, "ready for input in output\n")); 1950 if (j == 1000) 1951 step = 1000; 1952 DELAY(step); 1953 } 1954 if (j >= FDSTS_TIMEOUT) 1955 return (fdc_err(fdc, bootverbose? "output ready timeout\n": 0)); 1956 1957 /* Send the command and return */ 1958 fddata_wr(fdc, x); 1959 TRACE1("[0x%x->FDDATA]", x); 1960 return (0); 1961} 1962 1963/* 1964 * Block device driver interface functions (interspersed with even more 1965 * auxiliary functions). 1966 */ 1967static int 1968Fdopen(dev_t dev, int flags, int mode, struct thread *td) 1969{ 1970 fdu_t fdu = FDUNIT(minor(dev)); 1971 int type = FDTYPE(minor(dev)); 1972 fd_p fd; 1973 fdc_p fdc; 1974 int rv, unitattn, dflags; 1975 1976 if ((fd = devclass_get_softc(fd_devclass, fdu)) == 0) 1977 return (ENXIO); 1978 fdc = fd->fdc; 1979 if ((fdc == NULL) || (fd->type == FDT_NONE)) 1980 return (ENXIO); 1981 if (type > NUMDENS) 1982 return (ENXIO); 1983 dflags = device_get_flags(fd->dev); 1984 /* 1985 * This is a bit bogus. It's still possible that e. g. a 1986 * descriptor gets inherited to a child, but then it's at 1987 * least for the same subdevice. By checking FD_OPEN here, we 1988 * can ensure that a device isn't attempted to be opened with 1989 * different densities at the same time where the second open 1990 * could clobber the settings from the first one. 1991 */ 1992 if (fd->flags & FD_OPEN) 1993 return (EBUSY); 1994 1995#ifdef PC98 1996 if (pc98_fd_check_ready(fdu) == -1) 1997 return(EIO); 1998#endif 1999 2000 if (type == 0) { 2001 if (flags & FNONBLOCK) { 2002 /* 2003 * Unfortunately, physio(9) discards its ioflag 2004 * argument, thus preventing us from seeing the 2005 * IO_NDELAY bit. So we need to keep track 2006 * ourselves. 2007 */ 2008 fd->flags |= FD_NONBLOCK; 2009 fd->ft = 0; 2010 } else { 2011 /* 2012 * Figure out a unit attention condition. 2013 * 2014 * If UA has been forced, proceed. 2015 * 2016 * If motor is off, turn it on for a moment 2017 * and select our drive, in order to read the 2018 * UA hardware signal. 2019 * 2020 * If motor is on, and our drive is currently 2021 * selected, just read the hardware bit. 2022 * 2023 * If motor is on, but active for another 2024 * drive on that controller, we are lost. We 2025 * cannot risk to deselect the other drive, so 2026 * we just assume a forced UA condition to be 2027 * on the safe side. 2028 */ 2029 unitattn = 0; 2030 if ((dflags & FD_NO_CHLINE) != 0 || 2031 (fd->flags & FD_UA) != 0) { 2032 unitattn = 1; 2033 fd->flags &= ~FD_UA; 2034#ifndef PC98 2035 } else if (fdc->fdout & (FDO_MOEN0 | FDO_MOEN1 | 2036 FDO_MOEN2 | FDO_MOEN3)) { 2037 if ((fdc->fdout & FDO_FDSEL) == fd->fdsu) 2038 unitattn = fdin_rd(fdc) & FDI_DCHG; 2039 else 2040 unitattn = 1; 2041 } else { 2042 set_motor(fdc, fd->fdsu, TURNON); 2043 unitattn = fdin_rd(fdc) & FDI_DCHG; 2044 set_motor(fdc, fd->fdsu, TURNOFF); 2045#endif /* PC98 */ 2046 } 2047 if (unitattn && (rv = fdautoselect(dev)) != 0) 2048 return (rv); 2049 } 2050 } else { 2051 fd->ft = fd->fts + type; 2052 } 2053 fd->flags |= FD_OPEN; 2054 /* 2055 * Clearing the DMA overrun counter at open time is a bit messy. 2056 * Since we're only managing one counter per controller, opening 2057 * the second drive could mess it up. Anyway, if the DMA overrun 2058 * condition is really persistent, it will eventually time out 2059 * still. OTOH, clearing it here will ensure we'll at least start 2060 * trying again after a previous (maybe even long ago) failure. 2061 * Also, this is merely a stop-gap measure only that should not 2062 * happen during normal operation, so we can tolerate it to be a 2063 * bit sloppy about this. 2064 */ 2065 fdc->dma_overruns = 0; 2066 2067 return 0; 2068} 2069 2070static int 2071fdclose(dev_t dev, int flags, int mode, struct thread *td) 2072{ 2073 fdu_t fdu = FDUNIT(minor(dev)); 2074 struct fd_data *fd; 2075 2076 fd = devclass_get_softc(fd_devclass, fdu); 2077 fd->flags &= ~(FD_OPEN | FD_NONBLOCK); 2078 fd->options &= ~(FDOPT_NORETRY | FDOPT_NOERRLOG | FDOPT_NOERROR); 2079 2080 return (0); 2081} 2082 2083static void 2084fdstrategy(struct bio *bp) 2085{ 2086 long blknum, nblocks; 2087 int s; 2088 fdu_t fdu; 2089 fdc_p fdc; 2090 fd_p fd; 2091 size_t fdblk; 2092 2093 fdu = FDUNIT(minor(bp->bio_dev)); 2094 fd = devclass_get_softc(fd_devclass, fdu); 2095 if (fd == 0) 2096 panic("fdstrategy: buf for nonexistent device (%#lx, %#lx)", 2097 (u_long)major(bp->bio_dev), (u_long)minor(bp->bio_dev)); 2098 fdc = fd->fdc; 2099 if (fd->type == FDT_NONE || fd->ft == 0) { 2100 bp->bio_error = ENXIO; 2101 bp->bio_flags |= BIO_ERROR; 2102 goto bad; 2103 } 2104 fdblk = 128 << (fd->ft->secsize); 2105 if (bp->bio_cmd != FDBIO_FORMAT && bp->bio_cmd != FDBIO_RDSECTID) { 2106 if (fd->flags & FD_NONBLOCK) { 2107 bp->bio_error = EAGAIN; 2108 bp->bio_flags |= BIO_ERROR; 2109 goto bad; 2110 } 2111 if (bp->bio_blkno < 0) { 2112 printf( 2113 "fd%d: fdstrat: bad request blkno = %lu, bcount = %ld\n", 2114 fdu, (u_long)bp->bio_blkno, bp->bio_bcount); 2115 bp->bio_error = EINVAL; 2116 bp->bio_flags |= BIO_ERROR; 2117 goto bad; 2118 } 2119 if ((bp->bio_bcount % fdblk) != 0) { 2120 bp->bio_error = EINVAL; 2121 bp->bio_flags |= BIO_ERROR; 2122 goto bad; 2123 } 2124 } 2125 2126 /* 2127 * Set up block calculations. 2128 */ 2129 if (bp->bio_blkno > 20000000) { 2130 /* 2131 * Reject unreasonably high block number, prevent the 2132 * multiplication below from overflowing. 2133 */ 2134 bp->bio_error = EINVAL; 2135 bp->bio_flags |= BIO_ERROR; 2136 goto bad; 2137 } 2138 blknum = bp->bio_blkno * DEV_BSIZE / fdblk; 2139 nblocks = fd->ft->size; 2140 if (blknum + bp->bio_bcount / fdblk > nblocks) { 2141 if (blknum >= nblocks) { 2142 if (bp->bio_cmd == BIO_READ) 2143 bp->bio_resid = bp->bio_bcount; 2144 else { 2145 bp->bio_error = ENOSPC; 2146 bp->bio_flags |= BIO_ERROR; 2147 } 2148 goto bad; /* not always bad, but EOF */ 2149 } 2150 bp->bio_bcount = (nblocks - blknum) * fdblk; 2151 } 2152 bp->bio_pblkno = blknum; 2153 s = splbio(); 2154 bioqdisksort(&fdc->head, bp); 2155 untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */ 2156 devstat_start_transaction(&fd->device_stats); 2157 device_busy(fd->dev); 2158 fdstart(fdc); 2159 splx(s); 2160 return; 2161 2162bad: 2163 biodone(bp); 2164} 2165 2166/* 2167 * fdstart 2168 * 2169 * We have just queued something. If the controller is not busy 2170 * then simulate the case where it has just finished a command 2171 * So that it (the interrupt routine) looks on the queue for more 2172 * work to do and picks up what we just added. 2173 * 2174 * If the controller is already busy, we need do nothing, as it 2175 * will pick up our work when the present work completes. 2176 */ 2177static void 2178fdstart(struct fdc_data *fdc) 2179{ 2180 int s; 2181 2182 s = splbio(); 2183 if(fdc->state == DEVIDLE) 2184 { 2185 fdc_intr(fdc); 2186 } 2187 splx(s); 2188} 2189 2190static void 2191fd_iotimeout(void *xfdc) 2192{ 2193 fdc_p fdc; 2194 int s; 2195 2196 fdc = xfdc; 2197 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu); 2198 2199 /* 2200 * Due to IBM's brain-dead design, the FDC has a faked ready 2201 * signal, hardwired to ready == true. Thus, any command 2202 * issued if there's no diskette in the drive will _never_ 2203 * complete, and must be aborted by resetting the FDC. 2204 * Many thanks, Big Blue! 2205 * The FDC must not be reset directly, since that would 2206 * interfere with the state machine. Instead, pretend that 2207 * the command completed but was invalid. The state machine 2208 * will reset the FDC and retry once. 2209 */ 2210 s = splbio(); 2211 fdc->status[0] = NE7_ST0_IC_IV; 2212 fdc->flags &= ~FDC_STAT_VALID; 2213 fdc->state = IOTIMEDOUT; 2214 fdc_intr(fdc); 2215 splx(s); 2216} 2217 2218/* Just ensure it has the right spl. */ 2219static void 2220fd_pseudointr(void *xfdc) 2221{ 2222 int s; 2223 2224 s = splbio(); 2225 fdc_intr(xfdc); 2226 splx(s); 2227} 2228 2229/* 2230 * fdc_intr 2231 * 2232 * Keep calling the state machine until it returns a 0. 2233 * Always called at splbio. 2234 */ 2235static void 2236fdc_intr(void *xfdc) 2237{ 2238 fdc_p fdc = xfdc; 2239 while(fdstate(fdc)) 2240 ; 2241} 2242 2243/* 2244 * Magic pseudo-DMA initialization for YE FDC. Sets count and 2245 * direction. 2246 */ 2247#define SET_BCDR(fdc,wr,cnt,port) \ 2248 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port, \ 2249 ((cnt)-1) & 0xff); \ 2250 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port + 1, \ 2251 ((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f))); 2252 2253/* 2254 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy. 2255 */ 2256static int 2257fdcpio(fdc_p fdc, long flags, caddr_t addr, u_int count) 2258{ 2259 u_char *cptr = (u_char *)addr; 2260 2261 if (flags == BIO_READ) { 2262 if (fdc->state != PIOREAD) { 2263 fdc->state = PIOREAD; 2264 return(0); 2265 } 2266 SET_BCDR(fdc, 0, count, 0); 2267 bus_space_read_multi_1(fdc->portt, fdc->porth, fdc->port_off + 2268 FDC_YE_DATAPORT, cptr, count); 2269 } else { 2270 bus_space_write_multi_1(fdc->portt, fdc->porth, fdc->port_off + 2271 FDC_YE_DATAPORT, cptr, count); 2272 SET_BCDR(fdc, 0, count, 0); 2273 } 2274 return(1); 2275} 2276 2277/* 2278 * Try figuring out the density of the media present in our device. 2279 */ 2280static int 2281fdautoselect(dev_t dev) 2282{ 2283 fdu_t fdu; 2284 fd_p fd; 2285 struct fd_type *fdtp; 2286 struct fdc_readid id; 2287 int i, n, oopts, rv; 2288 2289 fdu = FDUNIT(minor(dev)); 2290 fd = devclass_get_softc(fd_devclass, fdu); 2291 2292 switch (fd->type) { 2293 default: 2294 return (ENXIO); 2295 2296#ifndef PC98 2297 case FDT_360K: 2298 case FDT_720K: 2299 /* no autoselection on those drives */ 2300 fd->ft = fd_native_types + fd->type; 2301 return (0); 2302#endif 2303 2304 case FDT_12M: 2305 fdtp = fd_searchlist_12m; 2306 n = sizeof fd_searchlist_12m / sizeof(struct fd_type); 2307 break; 2308 2309 case FDT_144M: 2310 fdtp = fd_searchlist_144m; 2311 n = sizeof fd_searchlist_144m / sizeof(struct fd_type); 2312 break; 2313 2314#ifndef PC98 2315 case FDT_288M: 2316 fdtp = fd_searchlist_288m; 2317 n = sizeof fd_searchlist_288m / sizeof(struct fd_type); 2318 break; 2319#endif 2320 } 2321 2322 /* 2323 * Try reading sector ID fields, first at cylinder 0, head 0, 2324 * then at cylinder 2, head N. We don't probe cylinder 1, 2325 * since for 5.25in DD media in a HD drive, there are no data 2326 * to read (2 step pulses per media cylinder required). For 2327 * two-sided media, the second probe always goes to head 1, so 2328 * we can tell them apart from single-sided media. As a 2329 * side-effect this means that single-sided media should be 2330 * mentioned in the search list after two-sided media of an 2331 * otherwise identical density. Media with a different number 2332 * of sectors per track but otherwise identical parameters 2333 * cannot be distinguished at all. 2334 * 2335 * If we successfully read an ID field on both cylinders where 2336 * the recorded values match our expectation, we are done. 2337 * Otherwise, we try the next density entry from the table. 2338 * 2339 * Stepping to cylinder 2 has the side-effect of clearing the 2340 * unit attention bit. 2341 */ 2342 oopts = fd->options; 2343 fd->options |= FDOPT_NOERRLOG | FDOPT_NORETRY; 2344 for (i = 0; i < n; i++, fdtp++) { 2345 fd->ft = fdtp; 2346 2347 id.cyl = id.head = 0; 2348 rv = fdmisccmd(dev, FDBIO_RDSECTID, &id); 2349 if (rv != 0) 2350 continue; 2351 if (id.cyl != 0 || id.head != 0 || 2352 id.secshift != fdtp->secsize) 2353 continue; 2354 id.cyl = 2; 2355 id.head = fd->ft->heads - 1; 2356 rv = fdmisccmd(dev, FDBIO_RDSECTID, &id); 2357 if (id.cyl != 2 || id.head != fdtp->heads - 1 || 2358 id.secshift != fdtp->secsize) 2359 continue; 2360 if (rv == 0) 2361 break; 2362 } 2363 2364 fd->options = oopts; 2365 if (i == n) { 2366 if (bootverbose) 2367 device_printf(fd->dev, "autoselection failed\n"); 2368 fd->ft = 0; 2369 return (EIO); 2370 } else { 2371 if (bootverbose) 2372 device_printf(fd->dev, "autoselected %d KB medium\n", 2373 fd->ft->size / 2); 2374 return (0); 2375 } 2376} 2377 2378 2379/* 2380 * The controller state machine. 2381 * 2382 * If it returns a non zero value, it should be called again immediately. 2383 */ 2384static int 2385fdstate(fdc_p fdc) 2386{ 2387 struct fdc_readid *idp; 2388 int read, format, rdsectid, cylinder, head, i, sec = 0, sectrac; 2389 int st0, cyl, st3, idf, ne7cmd, mfm, steptrac; 2390 unsigned long blknum; 2391 fdu_t fdu = fdc->fdu; 2392 fd_p fd; 2393 register struct bio *bp; 2394 struct fd_formb *finfo = NULL; 2395 size_t fdblk; 2396 2397 bp = fdc->bp; 2398 if (bp == NULL) { 2399 bp = bioq_first(&fdc->head); 2400 if (bp != NULL) { 2401 bioq_remove(&fdc->head, bp); 2402 fdc->bp = bp; 2403 } 2404 } 2405 if (bp == NULL) { 2406 /* 2407 * Nothing left for this controller to do, 2408 * force into the IDLE state. 2409 */ 2410 fdc->state = DEVIDLE; 2411 if (fdc->fd) { 2412 device_printf(fdc->fdc_dev, 2413 "unexpected valid fd pointer\n"); 2414 fdc->fd = (fd_p) 0; 2415 fdc->fdu = -1; 2416 } 2417 TRACE1("[fdc%d IDLE]", fdc->fdcu); 2418 return (0); 2419 } 2420 fdu = FDUNIT(minor(bp->bio_dev)); 2421 fd = devclass_get_softc(fd_devclass, fdu); 2422 fdblk = 128 << fd->ft->secsize; 2423 if (fdc->fd && (fd != fdc->fd)) 2424 device_printf(fd->dev, "confused fd pointers\n"); 2425 read = bp->bio_cmd == BIO_READ; 2426 mfm = (fd->ft->flags & FL_MFM)? NE7CMD_MFM: 0; 2427 steptrac = (fd->ft->flags & FL_2STEP)? 2: 1; 2428 if (read) 2429 idf = ISADMA_READ; 2430 else 2431 idf = ISADMA_WRITE; 2432 format = bp->bio_cmd == FDBIO_FORMAT; 2433 rdsectid = bp->bio_cmd == FDBIO_RDSECTID; 2434 if (format) 2435 finfo = (struct fd_formb *)bp->bio_data; 2436 TRACE1("fd%d", fdu); 2437 TRACE1("[%s]", fdstates[fdc->state]); 2438 TRACE1("(0x%x)", fd->flags); 2439 untimeout(fd_turnoff, fd, fd->toffhandle); 2440 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 2441 switch (fdc->state) 2442 { 2443 case DEVIDLE: 2444 case FINDWORK: /* we have found new work */ 2445 fdc->retry = 0; 2446 fd->skip = 0; 2447 fdc->fd = fd; 2448 fdc->fdu = fdu; 2449#ifdef PC98 2450 pc98_trans = fd->ft->trans; 2451 if (pc98_trans_prev != pc98_trans) { 2452 int i; 2453 set_density(fdc); 2454 for (i = 0; i < 10; i++) { 2455 outb(0x5f, 0); 2456 outb(0x5f, 0); 2457 } 2458 pc98_trans_prev = pc98_trans; 2459 } 2460 if (pc98_trans != fd->pc98_trans) { 2461 if (fd->type == FDT_144M) { 2462 bus_space_write_1(fdc->sc_fdemsiot, 2463 fdc->sc_fdemsioh, 2464 0, 2465 (fdu << 5) | 0x10 | 2466 (pc98_trans >> 1)); 2467 outb(0x5f, 0); 2468 outb(0x5f, 0); 2469 } 2470 fd->pc98_trans = pc98_trans; 2471 } 2472#else 2473 fdc->fdctl_wr(fdc, fd->ft->trans); 2474#endif 2475 TRACE1("[0x%x->FDCTL]", fd->ft->trans); 2476 /* 2477 * If the next drive has a motor startup pending, then 2478 * it will start up in its own good time. 2479 */ 2480 if(fd->flags & FD_MOTOR_WAIT) { 2481 fdc->state = MOTORWAIT; 2482 return (0); /* will return later */ 2483 } 2484 /* 2485 * Maybe if it's not starting, it SHOULD be starting. 2486 */ 2487#ifdef EPSON_NRDISK 2488 if (fdu != nrdu) { 2489 if (!(fd->flags & FD_MOTOR)) 2490 { 2491 fdc->state = MOTORWAIT; 2492 fd_turnon(fdu); 2493 return(0); 2494 } 2495 else /* at least make sure we are selected */ 2496 { 2497 set_motor(fdcu, fd->fdsu, TURNON); 2498 } 2499 } 2500#else /* !EPSON_NRDISK */ 2501 if (!(fd->flags & FD_MOTOR)) 2502 { 2503 fdc->state = MOTORWAIT; 2504 fd_turnon(fd); 2505 return (0); /* will return later */ 2506 } 2507 else /* at least make sure we are selected */ 2508 { 2509 set_motor(fdc, fd->fdsu, TURNON); 2510 } 2511#endif 2512 if (fdc->flags & FDC_NEEDS_RESET) { 2513 fdc->state = RESETCTLR; 2514 fdc->flags &= ~FDC_NEEDS_RESET; 2515 } else 2516 fdc->state = DOSEEK; 2517 return (1); /* will return immediately */ 2518 2519 case DOSEEK: 2520#ifdef PC98 2521 blknum = bp->bio_pblkno * DEV_BSIZE / fdblk + fd->skip / fdblk; 2522#else 2523 blknum = bp->bio_pblkno + fd->skip / fdblk; 2524#endif 2525 cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 2526 if (cylinder == fd->track) 2527 { 2528 fdc->state = SEEKCOMPLETE; 2529 return (1); /* will return immediately */ 2530 } 2531#ifdef PC98 2532 pc98_fd_check_ready(fdu); 2533#endif 2534 if (fd_cmd(fdc, 3, NE7CMD_SEEK, 2535 fd->fdsu, cylinder * steptrac, 0)) 2536 { 2537 /* 2538 * Seek command not accepted, looks like 2539 * the FDC went off to the Saints... 2540 */ 2541 fdc->retry = 6; /* try a reset */ 2542 return(retrier(fdc)); 2543 } 2544 fd->track = FD_NO_TRACK; 2545 fdc->state = SEEKWAIT; 2546 return(0); /* will return later */ 2547 2548 case SEEKWAIT: 2549 /* allow heads to settle */ 2550 timeout(fd_pseudointr, fdc, hz / 16); 2551 fdc->state = SEEKCOMPLETE; 2552 return(0); /* will return later */ 2553 2554 case SEEKCOMPLETE : /* seek done, start DMA */ 2555#ifdef PC98 2556 blknum = bp->bio_pblkno * DEV_BSIZE / fdblk + fd->skip / fdblk; 2557#else 2558 blknum = bp->bio_pblkno + fd->skip / fdblk; 2559#endif 2560 cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 2561 2562 /* Make sure seek really happened. */ 2563 if(fd->track == FD_NO_TRACK) { 2564 int descyl = cylinder * steptrac; 2565 do { 2566 /* 2567 * This might be a "ready changed" interrupt, 2568 * which cannot really happen since the 2569 * RDY pin is hardwired to + 5 volts. This 2570 * generally indicates a "bouncing" intr 2571 * line, so do one of the following: 2572 * 2573 * When running on an enhanced FDC that is 2574 * known to not go stuck after responding 2575 * with INVALID, fetch all interrupt states 2576 * until seeing either an INVALID or a 2577 * real interrupt condition. 2578 * 2579 * When running on a dumb old NE765, give 2580 * up immediately. The controller will 2581 * provide up to four dummy RC interrupt 2582 * conditions right after reset (for the 2583 * corresponding four drives), so this is 2584 * our only chance to get notice that it 2585 * was not the FDC that caused the interrupt. 2586 */ 2587 if (fd_sense_int(fdc, &st0, &cyl) 2588 == FD_NOT_VALID) 2589 return (0); /* will return later */ 2590 if(fdc->fdct == FDC_NE765 2591 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 2592 return (0); /* hope for a real intr */ 2593 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 2594 2595 if (0 == descyl) { 2596 int failed = 0; 2597 /* 2598 * seek to cyl 0 requested; make sure we are 2599 * really there 2600 */ 2601 if (fd_sense_drive_status(fdc, &st3)) 2602 failed = 1; 2603#ifdef EPSON_NRDISK 2604 if (fdu == nrdu) st3 = NE7_ST3_T0; 2605#endif /* EPSON_NRDISK */ 2606 if ((st3 & NE7_ST3_T0) == 0) { 2607 printf( 2608 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n", 2609 fdu, st3, NE7_ST3BITS); 2610 failed = 1; 2611 } 2612 2613 if (failed) { 2614 if(fdc->retry < 3) 2615 fdc->retry = 3; 2616 return (retrier(fdc)); 2617 } 2618 } 2619#ifdef EPSON_NRDISK 2620 if (fdu == nrdu) cyl = descyl; 2621#endif 2622 2623 if (cyl != descyl) { 2624 printf( 2625 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n", 2626 fdu, descyl, cyl, st0); 2627 if (fdc->retry < 3) 2628 fdc->retry = 3; 2629 return (retrier(fdc)); 2630 } 2631 } 2632 2633 fd->track = cylinder; 2634 if (format) 2635 fd->skip = (char *)&(finfo->fd_formb_cylno(0)) 2636 - (char *)finfo; 2637#ifdef EPSON_NRDISK 2638 if (fdu != nrdu) { 2639#endif /* EPSON_NRDISK */ 2640 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 2641 isa_dmastart(idf, bp->bio_data+fd->skip, 2642 format ? bp->bio_bcount : fdblk, fdc->dmachan); 2643#ifdef PC98 2644 blknum = bp->bio_pblkno * DEV_BSIZE / fdblk + fd->skip / fdblk; 2645#else 2646 blknum = bp->bio_pblkno + fd->skip / fdblk; 2647#endif 2648 sectrac = fd->ft->sectrac; 2649 sec = blknum % (sectrac * fd->ft->heads); 2650 head = sec / sectrac; 2651 sec = sec % sectrac + 1; 2652 if (head != 0 && fd->ft->offset_side2 != 0) 2653 sec += fd->ft->offset_side2; 2654 fd->hddrv = ((head&1)<<2)+fdu; 2655 2656 if(format || !(read || rdsectid)) 2657 { 2658 /* make sure the drive is writable */ 2659 if(fd_sense_drive_status(fdc, &st3) != 0) 2660 { 2661 /* stuck controller? */ 2662 if (!(fdc->flags & FDC_NODMA)) 2663 isa_dmadone(idf, 2664 bp->bio_data + fd->skip, 2665 format ? bp->bio_bcount : fdblk, 2666 fdc->dmachan); 2667 fdc->retry = 6; /* reset the beast */ 2668 return (retrier(fdc)); 2669 } 2670 if(st3 & NE7_ST3_WP) 2671 { 2672 /* 2673 * XXX YES! this is ugly. 2674 * in order to force the current operation 2675 * to fail, we will have to fake an FDC 2676 * error - all error handling is done 2677 * by the retrier() 2678 */ 2679 fdc->status[0] = NE7_ST0_IC_AT; 2680 fdc->status[1] = NE7_ST1_NW; 2681 fdc->status[2] = 0; 2682 fdc->status[3] = fd->track; 2683 fdc->status[4] = head; 2684 fdc->status[5] = sec; 2685 fdc->retry = 8; /* break out immediately */ 2686 fdc->state = IOTIMEDOUT; /* not really... */ 2687 return (1); /* will return immediately */ 2688 } 2689 } 2690 2691 if (format) { 2692 ne7cmd = NE7CMD_FORMAT | mfm; 2693 if (fdc->flags & FDC_NODMA) { 2694 /* 2695 * This seems to be necessary for 2696 * whatever obscure reason; if we omit 2697 * it, we end up filling the sector ID 2698 * fields of the newly formatted track 2699 * entirely with garbage, causing 2700 * `wrong cylinder' errors all over 2701 * the place when trying to read them 2702 * back. 2703 * 2704 * Umpf. 2705 */ 2706 SET_BCDR(fdc, 1, bp->bio_bcount, 0); 2707 2708 (void)fdcpio(fdc,bp->bio_cmd, 2709 bp->bio_data+fd->skip, 2710 bp->bio_bcount); 2711 2712 } 2713 /* formatting */ 2714 if(fd_cmd(fdc, 6, ne7cmd, head << 2 | fdu, 2715 finfo->fd_formb_secshift, 2716 finfo->fd_formb_nsecs, 2717 finfo->fd_formb_gaplen, 2718 finfo->fd_formb_fillbyte, 0)) { 2719 /* controller fell over */ 2720 if (!(fdc->flags & FDC_NODMA)) 2721 isa_dmadone(idf, 2722 bp->bio_data + fd->skip, 2723 format ? bp->bio_bcount : fdblk, 2724 fdc->dmachan); 2725 fdc->retry = 6; 2726 return (retrier(fdc)); 2727 } 2728 } else if (rdsectid) { 2729 ne7cmd = NE7CMD_READID | mfm; 2730 if (fd_cmd(fdc, 2, ne7cmd, head << 2 | fdu, 0)) { 2731 /* controller jamming */ 2732 fdc->retry = 6; 2733 return (retrier(fdc)); 2734 } 2735 } else { 2736 /* read or write operation */ 2737 ne7cmd = (read ? NE7CMD_READ | NE7CMD_SK : NE7CMD_WRITE) | mfm; 2738 if (fdc->flags & FDC_NODMA) { 2739 /* 2740 * This seems to be necessary even when 2741 * reading data. 2742 */ 2743 SET_BCDR(fdc, 1, fdblk, 0); 2744 2745 /* 2746 * Perform the write pseudo-DMA before 2747 * the WRITE command is sent. 2748 */ 2749 if (!read) 2750 (void)fdcpio(fdc,bp->bio_cmd, 2751 bp->bio_data+fd->skip, 2752 fdblk); 2753 } 2754 if (fd_cmd(fdc, 9, 2755 ne7cmd, 2756 head << 2 | fdu, /* head & unit */ 2757 fd->track, /* track */ 2758 head, 2759 sec, /* sector + 1 */ 2760 fd->ft->secsize, /* sector size */ 2761 sectrac, /* sectors/track */ 2762 fd->ft->gap, /* gap size */ 2763 fd->ft->datalen, /* data length */ 2764 0)) { 2765 /* the beast is sleeping again */ 2766 if (!(fdc->flags & FDC_NODMA)) 2767 isa_dmadone(idf, 2768 bp->bio_data + fd->skip, 2769 format ? bp->bio_bcount : fdblk, 2770 fdc->dmachan); 2771 fdc->retry = 6; 2772 return (retrier(fdc)); 2773 } 2774 } 2775 if (!rdsectid && (fdc->flags & FDC_NODMA)) 2776 /* 2777 * If this is a read, then simply await interrupt 2778 * before performing PIO. 2779 */ 2780 if (read && !fdcpio(fdc,bp->bio_cmd, 2781 bp->bio_data+fd->skip,fdblk)) { 2782 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 2783 return(0); /* will return later */ 2784 } 2785 2786 /* 2787 * Write (or format) operation will fall through and 2788 * await completion interrupt. 2789 */ 2790 fdc->state = IOCOMPLETE; 2791 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 2792 return (0); /* will return later */ 2793#ifdef EPSON_NRDISK 2794 } 2795 else { 2796 nrdblkn = (nrd_t)((unsigned long)bp->b_blkno*DEV_BSIZE/fdblk 2797 + fd->skip/fdblk); 2798 nrd_LED_on(); 2799 nrd_addrset(fdblk * nrdblkn); 2800 while (!nrd_check_ready()) DELAY(1); 2801 if (read) epson_insw(P_NRD_DATA, 2802 bp->bio_data + fd->skip, 2803 fdblk / sizeof(short)); 2804 else epson_outsw(P_NRD_DATA, 2805 bp->bio_data + fd->skip, 2806 (format ? bp->bio_bcount : fdblk) 2807 / sizeof(short)); 2808 2809 blknum = (unsigned long)bp->b_blkno*DEV_BSIZE/fdblk 2810 + fd->skip/fdblk; 2811 sectrac = fd->ft->sectrac; 2812 sec = blknum % (sectrac * fd->ft->heads); 2813 head = sec / sectrac; 2814 sec = sec % sectrac + 1; 2815 fd->hddrv = ((head&1)<<2)+fdu; 2816 2817 if (nrdsec++ >= nrd_sec()) 2818 nrdaddr = (nrd_t)(fd->track * 8 + head * 4); 2819 nrdsec = sec; 2820 fdc->state = IOCOMPLETE; 2821 } 2822#endif 2823 2824 case PIOREAD: 2825 /* 2826 * Actually perform the PIO read. The IOCOMPLETE case 2827 * removes the timeout for us. 2828 */ 2829 (void)fdcpio(fdc,bp->bio_cmd,bp->bio_data+fd->skip,fdblk); 2830 fdc->state = IOCOMPLETE; 2831 /* FALLTHROUGH */ 2832 case IOCOMPLETE: /* IO done, post-analyze */ 2833#ifdef EPSON_NRDISK 2834 if (fdu != nrdu) 2835 untimeout(fd_iotimeout, fdc, fd->tohandle); 2836#else 2837 untimeout(fd_iotimeout, fdc, fd->tohandle); 2838#endif 2839 2840 if (fd_read_status(fdc)) { 2841 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 2842 isa_dmadone(idf, bp->bio_data + fd->skip, 2843 format ? bp->bio_bcount : fdblk, 2844 fdc->dmachan); 2845 if (fdc->retry < 6) 2846 fdc->retry = 6; /* force a reset */ 2847 return (retrier(fdc)); 2848 } 2849 2850 fdc->state = IOTIMEDOUT; 2851 2852 /* FALLTHROUGH */ 2853 case IOTIMEDOUT: 2854#ifdef EPSON_NRDISK 2855 if (fdu != nrdu) { 2856#endif /* EPSON_NRDISK */ 2857 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 2858 isa_dmadone(idf, bp->bio_data + fd->skip, 2859 format ? bp->bio_bcount : fdblk, fdc->dmachan); 2860#ifdef EPSON_NRDISK 2861 } 2862 else nrd_LED_off(); 2863#endif /* EPSON_NRDISK */ 2864 if (fdc->status[0] & NE7_ST0_IC) { 2865 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2866 && fdc->status[1] & NE7_ST1_OR) { 2867 /* 2868 * DMA overrun. Someone hogged the bus and 2869 * didn't release it in time for the next 2870 * FDC transfer. 2871 * 2872 * We normally restart this without bumping 2873 * the retry counter. However, in case 2874 * something is seriously messed up (like 2875 * broken hardware), we rather limit the 2876 * number of retries so the IO operation 2877 * doesn't block indefinately. 2878 */ 2879 if (fdc->dma_overruns++ < FDC_DMAOV_MAX) { 2880 fdc->state = SEEKCOMPLETE; 2881 return (1);/* will return immediately */ 2882 } /* else fall through */ 2883 } 2884 if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV 2885 && fdc->retry < 6) 2886 fdc->retry = 6; /* force a reset */ 2887 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2888 && fdc->status[2] & NE7_ST2_WC 2889 && fdc->retry < 3) 2890 fdc->retry = 3; /* force recalibrate */ 2891 return (retrier(fdc)); 2892 } 2893 /* All OK */ 2894 if (rdsectid) { 2895 /* copy out ID field contents */ 2896 idp = (struct fdc_readid *)bp->bio_data; 2897 idp->cyl = fdc->status[3]; 2898 idp->head = fdc->status[4]; 2899 idp->sec = fdc->status[5]; 2900 idp->secshift = fdc->status[6]; 2901 } 2902 /* Operation successful, retry DMA overruns again next time. */ 2903 fdc->dma_overruns = 0; 2904 fd->skip += fdblk; 2905 if (!rdsectid && !format && fd->skip < bp->bio_bcount) { 2906 /* set up next transfer */ 2907 fdc->state = DOSEEK; 2908 } else { 2909 /* ALL DONE */ 2910 fd->skip = 0; 2911 bp->bio_resid = 0; 2912 fdc->bp = NULL; 2913 device_unbusy(fd->dev); 2914 biofinish(bp, &fd->device_stats, 0); 2915 fdc->fd = (fd_p) 0; 2916 fdc->fdu = -1; 2917 fdc->state = FINDWORK; 2918 } 2919 return (1); /* will return immediately */ 2920 2921 case RESETCTLR: 2922 fdc_reset(fdc); 2923 fdc->retry++; 2924 fdc->state = RESETCOMPLETE; 2925 return (0); /* will return later */ 2926 2927 case RESETCOMPLETE: 2928 /* 2929 * Discard all the results from the reset so that they 2930 * can't cause an unexpected interrupt later. 2931 */ 2932 for (i = 0; i < 4; i++) 2933 (void)fd_sense_int(fdc, &st0, &cyl); 2934 fdc->state = STARTRECAL; 2935 /* FALLTHROUGH */ 2936 case STARTRECAL: 2937#ifdef PC98 2938 pc98_fd_check_ready(fdu); 2939#endif 2940 if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) { 2941 /* arrgl */ 2942 fdc->retry = 6; 2943 return (retrier(fdc)); 2944 } 2945 fdc->state = RECALWAIT; 2946 return (0); /* will return later */ 2947 2948 case RECALWAIT: 2949 /* allow heads to settle */ 2950 timeout(fd_pseudointr, fdc, hz / 8); 2951 fdc->state = RECALCOMPLETE; 2952 return (0); /* will return later */ 2953 2954 case RECALCOMPLETE: 2955 do { 2956 /* 2957 * See SEEKCOMPLETE for a comment on this: 2958 */ 2959 if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 2960 return (0); /* will return later */ 2961 if(fdc->fdct == FDC_NE765 2962 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 2963 return (0); /* hope for a real intr */ 2964 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 2965#ifdef EPSON_NRDISK 2966 if (fdu == nrdu) { 2967 st0 = NE7_ST0_IC_NT; 2968 cyl = 0; 2969 } 2970#endif 2971 if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0) 2972 { 2973 if(fdc->retry > 3) 2974 /* 2975 * A recalibrate from beyond cylinder 77 2976 * will "fail" due to the FDC limitations; 2977 * since people used to complain much about 2978 * the failure message, try not logging 2979 * this one if it seems to be the first 2980 * time in a line. 2981 */ 2982 printf("fd%d: recal failed ST0 %b cyl %d\n", 2983 fdu, st0, NE7_ST0BITS, cyl); 2984 if(fdc->retry < 3) fdc->retry = 3; 2985 return (retrier(fdc)); 2986 } 2987 fd->track = 0; 2988 /* Seek (probably) necessary */ 2989 fdc->state = DOSEEK; 2990 return (1); /* will return immediately */ 2991 2992 case MOTORWAIT: 2993 if(fd->flags & FD_MOTOR_WAIT) 2994 { 2995 return (0); /* time's not up yet */ 2996 } 2997 if (fdc->flags & FDC_NEEDS_RESET) { 2998 fdc->state = RESETCTLR; 2999 fdc->flags &= ~FDC_NEEDS_RESET; 3000 } else 3001 fdc->state = DOSEEK; 3002 return (1); /* will return immediately */ 3003 3004 default: 3005 device_printf(fdc->fdc_dev, "unexpected FD int->"); 3006 if (fd_read_status(fdc) == 0) 3007 printf("FDC status :%x %x %x %x %x %x %x ", 3008 fdc->status[0], 3009 fdc->status[1], 3010 fdc->status[2], 3011 fdc->status[3], 3012 fdc->status[4], 3013 fdc->status[5], 3014 fdc->status[6] ); 3015 else 3016 printf("No status available "); 3017 if (fd_sense_int(fdc, &st0, &cyl) != 0) 3018 { 3019 printf("[controller is dead now]\n"); 3020 return (0); /* will return later */ 3021 } 3022 printf("ST0 = %x, PCN = %x\n", st0, cyl); 3023 return (0); /* will return later */ 3024 } 3025 /* noone should ever get here */ 3026} 3027 3028static int 3029retrier(struct fdc_data *fdc) 3030{ 3031 struct bio *bp; 3032 struct fd_data *fd; 3033 int fdu; 3034 3035 bp = fdc->bp; 3036 3037 /* XXX shouldn't this be cached somewhere? */ 3038 fdu = FDUNIT(minor(bp->bio_dev)); 3039 fd = devclass_get_softc(fd_devclass, fdu); 3040 if (fd->options & FDOPT_NORETRY) 3041 goto fail; 3042 3043 switch (fdc->retry) { 3044 case 0: case 1: case 2: 3045 fdc->state = SEEKCOMPLETE; 3046 break; 3047 case 3: case 4: case 5: 3048 fdc->state = STARTRECAL; 3049 break; 3050 case 6: 3051 fdc->state = RESETCTLR; 3052 break; 3053 case 7: 3054 break; 3055 default: 3056 fail: 3057 if ((fd->options & FDOPT_NOERRLOG) == 0) { 3058 disk_err(bp, "hard error", 3059 fdc->fd->skip / DEV_BSIZE, 0); 3060 if (fdc->flags & FDC_STAT_VALID) { 3061 printf( 3062 " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n", 3063 fdc->status[0], NE7_ST0BITS, 3064 fdc->status[1], NE7_ST1BITS, 3065 fdc->status[2], NE7_ST2BITS, 3066 fdc->status[3], fdc->status[4], 3067 fdc->status[5]); 3068 } 3069 else 3070 printf(" (No status)\n"); 3071 } 3072 if ((fd->options & FDOPT_NOERROR) == 0) { 3073 bp->bio_flags |= BIO_ERROR; 3074 bp->bio_error = EIO; 3075 bp->bio_resid = bp->bio_bcount - fdc->fd->skip; 3076 } else 3077 bp->bio_resid = 0; 3078 fdc->bp = NULL; 3079 fdc->fd->skip = 0; 3080 device_unbusy(fd->dev); 3081 biofinish(bp, &fdc->fd->device_stats, 0); 3082 fdc->state = FINDWORK; 3083 fdc->flags |= FDC_NEEDS_RESET; 3084 fdc->fd = (fd_p) 0; 3085 fdc->fdu = -1; 3086 return (1); 3087 } 3088 fdc->retry++; 3089 return (1); 3090} 3091 3092static void 3093fdbiodone(struct bio *bp) 3094{ 3095 wakeup(bp); 3096} 3097 3098static int 3099fdmisccmd(dev_t dev, u_int cmd, void *data) 3100{ 3101 fdu_t fdu; 3102 fd_p fd; 3103 struct bio *bp; 3104 struct fd_formb *finfo; 3105 struct fdc_readid *idfield; 3106 size_t fdblk; 3107 int error; 3108 3109 fdu = FDUNIT(minor(dev)); 3110 fd = devclass_get_softc(fd_devclass, fdu); 3111 fdblk = 128 << fd->ft->secsize; 3112 finfo = (struct fd_formb *)data; 3113 idfield = (struct fdc_readid *)data; 3114 3115 bp = malloc(sizeof(struct bio), M_TEMP, M_ZERO); 3116 3117 /* 3118 * Set up a bio request for fdstrategy(). bio_blkno is faked 3119 * so that fdstrategy() will seek to the the requested 3120 * cylinder, and use the desired head. 3121 */ 3122 bp->bio_cmd = cmd; 3123 if (cmd == FDBIO_FORMAT) { 3124 bp->bio_blkno = 3125 (finfo->cyl * (fd->ft->sectrac * fd->ft->heads) + 3126 finfo->head * fd->ft->sectrac) * 3127 fdblk / DEV_BSIZE; 3128 bp->bio_bcount = sizeof(struct fd_idfield_data) * 3129 finfo->fd_formb_nsecs; 3130 } else if (cmd == FDBIO_RDSECTID) { 3131 bp->bio_blkno = 3132 (idfield->cyl * (fd->ft->sectrac * fd->ft->heads) + 3133 idfield->head * fd->ft->sectrac) * 3134 fdblk / DEV_BSIZE; 3135 bp->bio_bcount = sizeof(struct fdc_readid); 3136 } else 3137 panic("wrong cmd in fdmisccmd()"); 3138 bp->bio_data = data; 3139 bp->bio_dev = dev; 3140 bp->bio_done = fdbiodone; 3141 bp->bio_flags = 0; 3142 3143 /* Now run the command. */ 3144 fdstrategy(bp); 3145 error = biowait(bp, "fdcmd"); 3146 3147 free(bp, M_TEMP); 3148 return (error); 3149} 3150 3151static int 3152fdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 3153{ 3154 fdu_t fdu; 3155 fd_p fd; 3156 struct fdc_status *fsp; 3157 struct fdc_readid *rid; 3158 size_t fdblk; 3159 int error, type; 3160 3161 fdu = FDUNIT(minor(dev)); 3162 type = FDTYPE(minor(dev)); 3163 fd = devclass_get_softc(fd_devclass, fdu); 3164 3165#ifdef PC98 3166 pc98_fd_check_ready(fdu); 3167#endif 3168 3169 /* 3170 * First, handle everything that could be done with 3171 * FD_NONBLOCK still being set. 3172 */ 3173 switch (cmd) { 3174 3175 case DIOCGMEDIASIZE: 3176 *(off_t *)addr = (128 << (fd->ft->secsize)) * fd->ft->size; 3177 return (0); 3178 3179 case DIOCGSECTORSIZE: 3180 *(u_int *)addr = 128 << (fd->ft->secsize); 3181 return (0); 3182 3183 case FIONBIO: 3184 if (*(int *)addr != 0) 3185 fd->flags |= FD_NONBLOCK; 3186 else { 3187 if (fd->ft == 0) { 3188 /* 3189 * No drive type has been selected yet, 3190 * cannot turn FNONBLOCK off. 3191 */ 3192 return (EINVAL); 3193 } 3194 fd->flags &= ~FD_NONBLOCK; 3195 } 3196 return (0); 3197 3198 case FIOASYNC: 3199 /* keep the generic fcntl() code happy */ 3200 return (0); 3201 3202 case FD_GTYPE: /* get drive type */ 3203 if (fd->ft == 0) 3204 /* no type known yet, return the native type */ 3205 *(struct fd_type *)addr = fd_native_types[fd->type]; 3206 else 3207 *(struct fd_type *)addr = *fd->ft; 3208 return (0); 3209 3210 case FD_STYPE: /* set drive type */ 3211 if (type == 0) { 3212 /* 3213 * Allow setting drive type temporarily iff 3214 * currently unset. Used for fdformat so any 3215 * user can set it, and then start formatting. 3216 */ 3217 if (fd->ft) 3218 return (EINVAL); /* already set */ 3219 fd->ft = fd->fts; 3220 *fd->ft = *(struct fd_type *)addr; 3221 fd->flags |= FD_UA; 3222 } else { 3223 /* 3224 * Set density definition permanently. Only 3225 * allow for superuser. 3226 */ 3227 if (suser(td) != 0) 3228 return (EPERM); 3229 fd->fts[type] = *(struct fd_type *)addr; 3230 } 3231 return (0); 3232 3233 case FD_GOPTS: /* get drive options */ 3234 *(int *)addr = fd->options + (type == 0? FDOPT_AUTOSEL: 0); 3235 return (0); 3236 3237 case FD_SOPTS: /* set drive options */ 3238 fd->options = *(int *)addr & ~FDOPT_AUTOSEL; 3239 return (0); 3240 3241#ifdef FDC_DEBUG 3242 case FD_DEBUG: 3243 if ((fd_debug != 0) != (*(int *)addr != 0)) { 3244 fd_debug = (*(int *)addr != 0); 3245 printf("fd%d: debugging turned %s\n", 3246 fd->fdu, fd_debug ? "on" : "off"); 3247 } 3248 return (0); 3249#endif 3250 3251 case FD_CLRERR: 3252 if (suser(td) != 0) 3253 return (EPERM); 3254 fd->fdc->fdc_errs = 0; 3255 return (0); 3256 3257 case FD_GSTAT: 3258 fsp = (struct fdc_status *)addr; 3259 if ((fd->fdc->flags & FDC_STAT_VALID) == 0) 3260 return (EINVAL); 3261 memcpy(fsp->status, fd->fdc->status, 7 * sizeof(u_int)); 3262 return (0); 3263 3264 case FD_GDTYPE: 3265 *(enum fd_drivetype *)addr = fd->type; 3266 return (0); 3267 } 3268 3269 /* 3270 * Now handle everything else. Make sure we have a valid 3271 * drive type. 3272 */ 3273 if (fd->flags & FD_NONBLOCK) 3274 return (EAGAIN); 3275 if (fd->ft == 0) 3276 return (ENXIO); 3277 fdblk = 128 << fd->ft->secsize; 3278 error = 0; 3279 3280 switch (cmd) { 3281 3282 case FD_FORM: 3283 if ((flag & FWRITE) == 0) 3284 return (EBADF); /* must be opened for writing */ 3285 if (((struct fd_formb *)addr)->format_version != 3286 FD_FORMAT_VERSION) 3287 return (EINVAL); /* wrong version of formatting prog */ 3288 error = fdmisccmd(dev, FDBIO_FORMAT, addr); 3289 break; 3290 3291 case FD_GTYPE: /* get drive type */ 3292 *(struct fd_type *)addr = *fd->ft; 3293 break; 3294 3295 case FD_STYPE: /* set drive type */ 3296 /* this is considered harmful; only allow for superuser */ 3297 if (suser(td) != 0) 3298 return (EPERM); 3299 *fd->ft = *(struct fd_type *)addr; 3300 break; 3301 3302 case FD_GOPTS: /* get drive options */ 3303 *(int *)addr = fd->options; 3304 break; 3305 3306 case FD_SOPTS: /* set drive options */ 3307 fd->options = *(int *)addr; 3308 break; 3309 3310#ifdef FDC_DEBUG 3311 case FD_DEBUG: 3312 if ((fd_debug != 0) != (*(int *)addr != 0)) { 3313 fd_debug = (*(int *)addr != 0); 3314 printf("fd%d: debugging turned %s\n", 3315 fd->fdu, fd_debug ? "on" : "off"); 3316 } 3317 break; 3318#endif 3319 3320 case FD_CLRERR: 3321 if (suser(td) != 0) 3322 return (EPERM); 3323 fd->fdc->fdc_errs = 0; 3324 break; 3325 3326 case FD_GSTAT: 3327 fsp = (struct fdc_status *)addr; 3328 if ((fd->fdc->flags & FDC_STAT_VALID) == 0) 3329 return (EINVAL); 3330 memcpy(fsp->status, fd->fdc->status, 7 * sizeof(u_int)); 3331 break; 3332 3333 case FD_READID: 3334 rid = (struct fdc_readid *)addr; 3335 if (rid->cyl > MAX_CYLINDER || rid->head > MAX_HEAD) 3336 return (EINVAL); 3337 error = fdmisccmd(dev, FDBIO_RDSECTID, addr); 3338 break; 3339 3340 default: 3341 error = ENOTTY; 3342 break; 3343 } 3344 return (error); 3345}
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