diff --git a/sys/conf/files.alpha b/sys/conf/files.alpha index 4ea42c474290..9e920453e8cc 100644 --- a/sys/conf/files.alpha +++ b/sys/conf/files.alpha @@ -173,6 +173,7 @@ dev/fb/fb.c optional fb dev/fb/fb.c optional vga dev/fb/splash.c optional splash dev/fb/vga.c optional vga +dev/fdc/fdc.c optional fdc dev/kbd/atkbd.c optional atkbd dev/kbd/atkbdc.c optional atkbdc dev/kbd/kbd.c optional atkbd @@ -198,7 +199,6 @@ geom/geom_bsd.c standard geom/geom_bsd_enc.c standard isa/atkbd_isa.c optional atkbd isa/atkbdc_isa.c optional atkbdc -isa/fd.c optional fdc isa/psm.c optional psm isa/syscons_isa.c optional sc isa/vga_isa.c optional vga diff --git a/sys/conf/files.amd64 b/sys/conf/files.amd64 index a2f0c2ef633b..3176469f75d6 100644 --- a/sys/conf/files.amd64 +++ b/sys/conf/files.amd64 @@ -98,6 +98,7 @@ dev/fb/fb.c optional fb dev/fb/fb.c optional vga dev/fb/splash.c optional splash dev/fb/vga.c optional vga +dev/fdc/fdc.c optional fdc dev/kbd/atkbd.c optional atkbd dev/kbd/atkbdc.c optional atkbdc dev/kbd/kbd.c optional atkbd @@ -125,7 +126,6 @@ geom/geom_mbr.c standard geom/geom_mbr_enc.c standard isa/atkbd_isa.c optional atkbd isa/atkbdc_isa.c optional atkbdc -isa/fd.c optional fdc isa/psm.c optional psm isa/syscons_isa.c optional sc isa/vga_isa.c optional vga diff --git a/sys/conf/files.i386 b/sys/conf/files.i386 index 3e1a2b395377..1e584d7ad0cc 100644 --- a/sys/conf/files.i386 +++ b/sys/conf/files.i386 @@ -136,6 +136,7 @@ dev/fb/fb.c optional fb dev/fb/fb.c optional vga dev/fb/splash.c optional splash dev/fb/vga.c optional vga +dev/fdc/fdc.c optional fdc dev/fe/if_fe_isa.c optional fe isa dev/ichwd/ichwd.c optional ichwd dev/if_ndis/if_ndis.c optional ndis @@ -393,7 +394,6 @@ i4b/layer1/itjc/i4b_itjc_l1fsm.c optional itjc # isa/atkbd_isa.c optional atkbd isa/atkbdc_isa.c optional atkbdc -isa/fd.c optional fdc isa/psm.c optional psm isa/syscons_isa.c optional sc isa/vga_isa.c optional vga diff --git a/sys/conf/files.ia64 b/sys/conf/files.ia64 index fe557366bacf..ae092f238087 100644 --- a/sys/conf/files.ia64 +++ b/sys/conf/files.ia64 @@ -52,6 +52,7 @@ dev/fb/fb.c optional fb dev/fb/fb.c optional vga dev/fb/splash.c optional splash dev/fb/vga.c optional vga +dev/fdc/fdc.c optional fdc dev/kbd/atkbd.c optional atkbd dev/kbd/atkbdc.c optional atkbdc dev/kbd/kbd.c optional atkbd @@ -130,7 +131,6 @@ ia64/isa/isa_dma.c optional isa ia64/pci/pci_cfgreg.c optional pci isa/atkbd_isa.c optional atkbd isa/atkbdc_isa.c optional atkbdc -isa/fd.c optional fdc isa/psm.c optional psm isa/syscons_isa.c optional sc isa/vga_isa.c optional vga diff --git a/sys/isa/fd.c b/sys/isa/fd.c deleted file mode 100644 index ad882dbbea08..000000000000 --- a/sys/isa/fd.c +++ /dev/null @@ -1,2726 +0,0 @@ -/* - * Copyright (c) 1990 The Regents of the University of California. - * All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Don Ahn. - * - * Libretto PCMCIA floppy support by David Horwitt (dhorwitt@ucsd.edu) - * aided by the Linux floppy driver modifications from David Bateman - * (dbateman@eng.uts.edu.au). - * - * Copyright (c) 1993, 1994 by - * jc@irbs.UUCP (John Capo) - * vak@zebub.msk.su (Serge Vakulenko) - * ache@astral.msk.su (Andrew A. Chernov) - * - * Copyright (c) 1993, 1994, 1995 by - * joerg_wunsch@uriah.sax.de (Joerg Wunsch) - * dufault@hda.com (Peter Dufault) - * - * Copyright (c) 2001 Joerg Wunsch, - * joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * from: @(#)fd.c 7.4 (Berkeley) 5/25/91 - */ - -#include -__FBSDID("$FreeBSD$"); - -#include "opt_fdc.h" -#include "card.h" - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -#include -#include -#include - -#include -#include -#include -#include - -enum fdc_type -{ - FDC_NE765, FDC_ENHANCED, FDC_UNKNOWN = -1 -}; - -enum fdc_states { - DEVIDLE, - FINDWORK, - DOSEEK, - SEEKCOMPLETE , - IOCOMPLETE, - RECALCOMPLETE, - STARTRECAL, - RESETCTLR, - SEEKWAIT, - RECALWAIT, - MOTORWAIT, - IOTIMEDOUT, - RESETCOMPLETE, - PIOREAD -}; - -#ifdef FDC_DEBUG -static char const * const fdstates[] = { - "DEVIDLE", - "FINDWORK", - "DOSEEK", - "SEEKCOMPLETE", - "IOCOMPLETE", - "RECALCOMPLETE", - "STARTRECAL", - "RESETCTLR", - "SEEKWAIT", - "RECALWAIT", - "MOTORWAIT", - "IOTIMEDOUT", - "RESETCOMPLETE", - "PIOREAD" -}; -#endif - -/* - * Per controller structure (softc). - */ -struct fdc_data -{ - int fdcu; /* our unit number */ - int dmachan; - int flags; -#define FDC_ATTACHED 0x01 -#define FDC_STAT_VALID 0x08 -#define FDC_HAS_FIFO 0x10 -#define FDC_NEEDS_RESET 0x20 -#define FDC_NODMA 0x40 -#define FDC_ISPNP 0x80 -#define FDC_ISPCMCIA 0x100 - struct fd_data *fd; - int fdu; /* the active drive */ - enum fdc_states state; - int retry; - int fdout; /* mirror of the w/o digital output reg */ - u_int status[7]; /* copy of the registers */ - enum fdc_type fdct; /* chip version of FDC */ - int fdc_errs; /* number of logged errors */ - int dma_overruns; /* number of DMA overruns */ - struct bio_queue_head head; - struct bio *bp; /* active buffer */ - struct resource *res_ioport, *res_ctl, *res_irq, *res_drq; - int rid_ioport, rid_ctl, rid_irq, rid_drq; - int port_off; - bus_space_tag_t portt; - bus_space_handle_t porth; - bus_space_tag_t ctlt; - bus_space_handle_t ctlh; - void *fdc_intr; - struct device *fdc_dev; - void (*fdctl_wr)(struct fdc_data *fdc, u_int8_t v); -}; - -#define FDBIO_FORMAT BIO_CMD2 - -typedef int fdu_t; -typedef int fdcu_t; -typedef int fdsu_t; -typedef struct fd_data *fd_p; -typedef struct fdc_data *fdc_p; -typedef enum fdc_type fdc_t; - -/* - * fdc maintains a set (1!) of ivars per child of each controller. - */ -enum fdc_device_ivars { - FDC_IVAR_FDUNIT, -}; - -/* - * Simple access macros for the ivars. - */ -#define FDC_ACCESSOR(A, B, T) \ -static __inline T fdc_get_ ## A(device_t dev) \ -{ \ - uintptr_t v; \ - BUS_READ_IVAR(device_get_parent(dev), dev, FDC_IVAR_ ## B, &v); \ - return (T) v; \ -} -FDC_ACCESSOR(fdunit, FDUNIT, int) - -/* configuration flags for fdc */ -#define FDC_NO_FIFO (1 << 2) /* do not enable FIFO */ - -/* error returns for fd_cmd() */ -#define FD_FAILED -1 -#define FD_NOT_VALID -2 -#define FDC_ERRMAX 100 /* do not log more */ -/* - * Stop retrying after this many DMA overruns. Since each retry takes - * one revolution, with 300 rpm., 25 retries take approximately 5 - * seconds which the read attempt will block in case the DMA overrun - * is persistent. - */ -#define FDC_DMAOV_MAX 25 - -/* - * Timeout value for the PIO loops to wait until the FDC main status - * register matches our expectations (request for master, direction - * bit). This is supposed to be a number of microseconds, although - * timing might actually not be very accurate. - * - * Timeouts of 100 msec are believed to be required for some broken - * (old) hardware. - */ -#define FDSTS_TIMEOUT 100000 - -/* - * Number of subdevices that can be used for different density types. - */ -#define NUMDENS 16 - -#define FDBIO_RDSECTID BIO_CMD1 - -/* - * List of native drive densities. Order must match enum fd_drivetype - * in . Upon attaching the drive, each of the - * programmable subdevices is initialized with the native density - * definition. - */ -static struct fd_type fd_native_types[] = -{ -{ 0 }, /* FDT_NONE */ -{ 9,2,0xFF,0x2A,40, 720,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* FDT_360K */ -{ 15,2,0xFF,0x1B,80,2400,FDC_500KBPS,2,0x54,1,0,FL_MFM }, /* FDT_12M */ -{ 9,2,0xFF,0x20,80,1440,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* FDT_720K */ -{ 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* FDT_144M */ -#if 0 /* we currently don't handle 2.88 MB */ -{ 36,2,0xFF,0x1B,80,5760,FDC_1MBPS, 2,0x4C,1,1,FL_MFM|FL_PERPND } /*FDT_288M*/ -#else -{ 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* FDT_144M */ -#endif -}; - -/* - * 360 KB 5.25" and 720 KB 3.5" drives don't have automatic density - * selection, they just start out with their native density (or lose). - * So 1.2 MB 5.25", 1.44 MB 3.5", and 2.88 MB 3.5" drives have their - * respective lists of densities to search for. - */ -static struct fd_type fd_searchlist_12m[] = { -{ 15,2,0xFF,0x1B,80,2400,FDC_500KBPS,2,0x54,1,0,FL_MFM }, /* 1.2M */ -{ 9,2,0xFF,0x23,40, 720,FDC_300KBPS,2,0x50,1,0,FL_MFM|FL_2STEP }, /* 360K */ -{ 9,2,0xFF,0x20,80,1440,FDC_300KBPS,2,0x50,1,0,FL_MFM }, /* 720K */ -}; - -static struct fd_type fd_searchlist_144m[] = { -{ 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* 1.44M */ -{ 9,2,0xFF,0x20,80,1440,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* 720K */ -}; - -/* We search for 1.44M first since this is the most common case. */ -static struct fd_type fd_searchlist_288m[] = { -{ 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* 1.44M */ -#if 0 -{ 36,2,0xFF,0x1B,80,5760,FDC_1MBPS, 2,0x4C,1,1,FL_MFM|FL_PERPND } /* 2.88M */ -#endif -{ 9,2,0xFF,0x20,80,1440,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* 720K */ -}; - -#define MAX_SEC_SIZE (128 << 3) -#define MAX_CYLINDER 85 /* some people really stress their drives - * up to cyl 82 */ -#define MAX_HEAD 1 - -static devclass_t fdc_devclass; - -/* - * Per drive structure (softc). - */ -struct fd_data { - struct fdc_data *fdc; /* pointer to controller structure */ - int fdsu; /* this units number on this controller */ - enum fd_drivetype type; /* drive type */ - struct fd_type *ft; /* pointer to current type descriptor */ - struct fd_type fts[NUMDENS]; /* type descriptors */ - int flags; -#define FD_OPEN 0x01 /* it's open */ -#define FD_NONBLOCK 0x02 /* O_NONBLOCK set */ -#define FD_ACTIVE 0x04 /* it's active */ -#define FD_MOTOR 0x08 /* motor should be on */ -#define FD_MOTOR_WAIT 0x10 /* motor coming up */ -#define FD_UA 0x20 /* force unit attention */ - int skip; - int hddrv; -#define FD_NO_TRACK -2 - int track; /* where we think the head is */ - int options; /* user configurable options, see fdcio.h */ - struct callout_handle toffhandle; - struct callout_handle tohandle; - struct devstat *device_stats; - dev_t masterdev; - device_t dev; - fdu_t fdu; -}; - -struct fdc_ivars { - int fdunit; -}; -static devclass_t fd_devclass; - -/* configuration flags for fd */ -#define FD_TYPEMASK 0x0f /* drive type, matches enum - * fd_drivetype; on i386 machines, if - * given as 0, use RTC type for fd0 - * and fd1 */ -#define FD_DTYPE(flags) ((flags) & FD_TYPEMASK) -#define FD_NO_CHLINE 0x10 /* drive does not support changeline - * aka. unit attention */ -#define FD_NO_PROBE 0x20 /* don't probe drive (seek test), just - * assume it is there */ - -/* - * Throughout this file the following conventions will be used: - * - * fd is a pointer to the fd_data struct for the drive in question - * fdc is a pointer to the fdc_data struct for the controller - * fdu is the floppy drive unit number - * fdcu is the floppy controller unit number - * fdsu is the floppy drive unit number on that controller. (sub-unit) - */ - -/* - * Function declarations, same (chaotic) order as they appear in the - * file. Re-ordering is too late now, it would only obfuscate the - * diffs against old and offspring versions (like the PC98 one). - * - * Anyone adding functions here, please keep this sequence the same - * as below -- makes locating a particular function in the body much - * easier. - */ -static void fdout_wr(fdc_p, u_int8_t); -static u_int8_t fdsts_rd(fdc_p); -static void fddata_wr(fdc_p, u_int8_t); -static u_int8_t fddata_rd(fdc_p); -static void fdctl_wr_isa(fdc_p, u_int8_t); -#if NCARD > 0 -static void fdctl_wr_pcmcia(fdc_p, u_int8_t); -#endif -#if 0 -static u_int8_t fdin_rd(fdc_p); -#endif -static int fdc_err(struct fdc_data *, const char *); -static int fd_cmd(struct fdc_data *, int, ...); -static int enable_fifo(fdc_p fdc); -static int fd_sense_drive_status(fdc_p, int *); -static int fd_sense_int(fdc_p, int *, int *); -static int fd_read_status(fdc_p); -static int fdc_alloc_resources(struct fdc_data *); -static void fdc_release_resources(struct fdc_data *); -static int fdc_read_ivar(device_t, device_t, int, uintptr_t *); -static int fdc_probe(device_t); -#if NCARD > 0 -static int fdc_pccard_probe(device_t); -#endif -static int fdc_detach(device_t dev); -static void fdc_add_child(device_t, const char *, int); -static int fdc_attach(device_t); -static int fdc_print_child(device_t, device_t); -static int fd_probe(device_t); -static int fd_attach(device_t); -static int fd_detach(device_t); -static void set_motor(struct fdc_data *, int, int); -# define TURNON 1 -# define TURNOFF 0 -static timeout_t fd_turnoff; -static timeout_t fd_motor_on; -static void fd_turnon(struct fd_data *); -static void fdc_reset(fdc_p); -static int fd_in(struct fdc_data *, int *); -static int out_fdc(struct fdc_data *, int); -/* - * The open function is named fdopen() to avoid confusion with fdopen() - * in fd(4). The difference is now only meaningful for debuggers. - */ -static d_open_t fdopen; -static d_close_t fdclose; -static d_strategy_t fdstrategy; -static void fdstart(struct fdc_data *); -static timeout_t fd_iotimeout; -static timeout_t fd_pseudointr; -static driver_intr_t fdc_intr; -static int fdcpio(fdc_p, long, caddr_t, u_int); -static int fdautoselect(dev_t); -static int fdstate(struct fdc_data *); -static int retrier(struct fdc_data *); -static void fdbiodone(struct bio *); -static int fdmisccmd(dev_t, u_int, void *); -static d_ioctl_t fdioctl; - -static int fifo_threshold = 8; /* XXX: should be accessible via sysctl */ - -#ifdef FDC_DEBUG -/* CAUTION: fd_debug causes huge amounts of logging output */ -static int volatile fd_debug = 0; -#define TRACE0(arg) do { if (fd_debug) printf(arg); } while (0) -#define TRACE1(arg1, arg2) do { if (fd_debug) printf(arg1, arg2); } while (0) -#else /* FDC_DEBUG */ -#define TRACE0(arg) do { } while (0) -#define TRACE1(arg1, arg2) do { } while (0) -#endif /* FDC_DEBUG */ - -/* - * Bus space handling (access to low-level IO). - */ -static void -fdout_wr(fdc_p fdc, u_int8_t v) -{ - bus_space_write_1(fdc->portt, fdc->porth, FDOUT+fdc->port_off, v); -} - -static u_int8_t -fdsts_rd(fdc_p fdc) -{ - return bus_space_read_1(fdc->portt, fdc->porth, FDSTS+fdc->port_off); -} - -static void -fddata_wr(fdc_p fdc, u_int8_t v) -{ - bus_space_write_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off, v); -} - -static u_int8_t -fddata_rd(fdc_p fdc) -{ - return bus_space_read_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off); -} - -static void -fdctl_wr_isa(fdc_p fdc, u_int8_t v) -{ - bus_space_write_1(fdc->ctlt, fdc->ctlh, 0, v); -} - -#if NCARD > 0 -static void -fdctl_wr_pcmcia(fdc_p fdc, u_int8_t v) -{ - bus_space_write_1(fdc->portt, fdc->porth, FDCTL+fdc->port_off, v); -} -#endif - -static u_int8_t -fdin_rd(fdc_p fdc) -{ - return bus_space_read_1(fdc->portt, fdc->porth, FDIN); -} - -static struct cdevsw fd_cdevsw = { - .d_version = D_VERSION, - .d_open = fdopen, - .d_close = fdclose, - .d_read = physread, - .d_write = physwrite, - .d_ioctl = fdioctl, - .d_strategy = fdstrategy, - .d_name = "fd", - .d_flags = D_DISK | D_NEEDGIANT, -}; - -/* - * Auxiliary functions. Well, some only. Others are scattered - * throughout the entire file. - */ -static int -fdc_err(struct fdc_data *fdc, const char *s) -{ - fdc->fdc_errs++; - if (s) { - if (fdc->fdc_errs < FDC_ERRMAX) - device_printf(fdc->fdc_dev, "%s", s); - else if (fdc->fdc_errs == FDC_ERRMAX) - device_printf(fdc->fdc_dev, "too many errors, not " - "logging any more\n"); - } - - return FD_FAILED; -} - -/* - * fd_cmd: Send a command to the chip. Takes a varargs with this structure: - * Unit number, - * # of output bytes, output bytes as ints ..., - * # of input bytes, input bytes as ints ... - */ -static int -fd_cmd(struct fdc_data *fdc, int n_out, ...) -{ - u_char cmd; - int n_in; - int n; - va_list ap; - - va_start(ap, n_out); - cmd = (u_char)(va_arg(ap, int)); - va_end(ap); - va_start(ap, n_out); - for (n = 0; n < n_out; n++) - { - if (out_fdc(fdc, va_arg(ap, int)) < 0) - { - char msg[50]; - snprintf(msg, sizeof(msg), - "cmd %x failed at out byte %d of %d\n", - cmd, n + 1, n_out); - return fdc_err(fdc, msg); - } - } - n_in = va_arg(ap, int); - for (n = 0; n < n_in; n++) - { - int *ptr = va_arg(ap, int *); - if (fd_in(fdc, ptr) < 0) - { - char msg[50]; - snprintf(msg, sizeof(msg), - "cmd %02x failed at in byte %d of %d\n", - cmd, n + 1, n_in); - return fdc_err(fdc, msg); - } - } - - return 0; -} - -static int -enable_fifo(fdc_p fdc) -{ - int i, j; - - if ((fdc->flags & FDC_HAS_FIFO) == 0) { - - /* - * Cannot use fd_cmd the normal way here, since - * this might be an invalid command. Thus we send the - * first byte, and check for an early turn of data directon. - */ - - if (out_fdc(fdc, I8207X_CONFIGURE) < 0) - return fdc_err(fdc, "Enable FIFO failed\n"); - - /* If command is invalid, return */ - j = FDSTS_TIMEOUT; - while ((i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM)) - != NE7_RQM && j-- > 0) { - if (i == (NE7_DIO | NE7_RQM)) { - fdc_reset(fdc); - return FD_FAILED; - } - DELAY(1); - } - if (j<0 || - fd_cmd(fdc, 3, - 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) { - fdc_reset(fdc); - return fdc_err(fdc, "Enable FIFO failed\n"); - } - fdc->flags |= FDC_HAS_FIFO; - return 0; - } - if (fd_cmd(fdc, 4, - I8207X_CONFIGURE, 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) - return fdc_err(fdc, "Re-enable FIFO failed\n"); - return 0; -} - -static int -fd_sense_drive_status(fdc_p fdc, int *st3p) -{ - int st3; - - if (fd_cmd(fdc, 2, NE7CMD_SENSED, fdc->fdu, 1, &st3)) - { - return fdc_err(fdc, "Sense Drive Status failed\n"); - } - if (st3p) - *st3p = st3; - - return 0; -} - -static int -fd_sense_int(fdc_p fdc, int *st0p, int *cylp) -{ - int cyl, st0, ret; - - ret = fd_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0); - if (ret) { - (void)fdc_err(fdc, - "sense intr err reading stat reg 0\n"); - return ret; - } - - if (st0p) - *st0p = st0; - - if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) { - /* - * There doesn't seem to have been an interrupt. - */ - return FD_NOT_VALID; - } - - if (fd_in(fdc, &cyl) < 0) { - return fdc_err(fdc, "can't get cyl num\n"); - } - - if (cylp) - *cylp = cyl; - - return 0; -} - - -static int -fd_read_status(fdc_p fdc) -{ - int i, ret; - - for (i = ret = 0; i < 7; i++) { - /* - * XXX types are poorly chosen. Only bytes can be read - * from the hardware, but fdc->status[] wants u_ints and - * fd_in() gives ints. - */ - int status; - - ret = fd_in(fdc, &status); - fdc->status[i] = status; - if (ret != 0) - break; - } - - if (ret == 0) - fdc->flags |= FDC_STAT_VALID; - else - fdc->flags &= ~FDC_STAT_VALID; - - return ret; -} - -static int -fdc_alloc_resources(struct fdc_data *fdc) -{ - device_t dev; - int ispnp, ispcmcia, nports; - - dev = fdc->fdc_dev; - ispnp = (fdc->flags & FDC_ISPNP) != 0; - ispcmcia = (fdc->flags & FDC_ISPCMCIA) != 0; - fdc->rid_ioport = fdc->rid_irq = fdc->rid_drq = 0; - fdc->res_ioport = fdc->res_irq = fdc->res_drq = 0; - fdc->rid_ctl = 1; - - /* - * On standard ISA, we don't just use an 8 port range - * (e.g. 0x3f0-0x3f7) since that covers an IDE control - * register at 0x3f6. - * - * Isn't PC hardware wonderful. - * - * The Y-E Data PCMCIA FDC doesn't have this problem, it - * uses the register with offset 6 for pseudo-DMA, and the - * one with offset 7 as control register. - */ - nports = ispcmcia ? 8 : (ispnp ? 1 : 6); - - /* - * Some ACPI BIOSen have _CRS objects for the floppy device that - * split the I/O port resource into several resources. We detect - * this case by checking if there are more than 2 IOPORT resources. - * If so, we use the resource with the smallest start address as - * the port RID and the largest start address as the control RID. - */ - if (bus_get_resource_count(dev, SYS_RES_IOPORT, 2) != 0) { - u_long min_start, max_start, tmp; - int i; - - /* Find the min/max start addresses and their RIDs. */ - max_start = 0ul; - min_start = ~0ul; - for (i = 0; bus_get_resource_count(dev, SYS_RES_IOPORT, i) > 0; - i++) { - tmp = bus_get_resource_start(dev, SYS_RES_IOPORT, i); - KASSERT(tmp != 0, ("bogus resource")); - if (tmp < min_start) { - min_start = tmp; - fdc->rid_ioport = i; - } - if (tmp > max_start) { - max_start = tmp; - fdc->rid_ctl = i; - } - } - if (min_start + 7 != max_start) { - device_printf(dev, "I/O to control range incorrect\n"); - return (ENXIO); - } - } - - fdc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT, - &fdc->rid_ioport, 0ul, ~0ul, - nports, RF_ACTIVE); - if (fdc->res_ioport == 0) { - device_printf(dev, "cannot reserve I/O port range (%d ports)\n", - nports); - return ENXIO; - } - fdc->portt = rman_get_bustag(fdc->res_ioport); - fdc->porth = rman_get_bushandle(fdc->res_ioport); - - if (!ispcmcia) { - /* - * Some BIOSen report the device at 0x3f2-0x3f5,0x3f7 - * and some at 0x3f0-0x3f5,0x3f7. We detect the former - * by checking the size and adjust the port address - * accordingly. - */ - if (bus_get_resource_count(dev, SYS_RES_IOPORT, 0) == 4) - fdc->port_off = -2; - - /* - * Register the control port range as rid 1 if it - * isn't there already. Most PnP BIOSen will have - * already done this but non-PnP configurations don't. - * - * And some (!!) report 0x3f2-0x3f5 and completely - * leave out the control register! It seems that some - * non-antique controller chips have a different - * method of programming the transfer speed which - * doesn't require the control register, but it's - * mighty bogus as the chip still responds to the - * address for the control register. - */ - if (bus_get_resource_count(dev, SYS_RES_IOPORT, 1) == 0) { - u_long ctlstart; - - /* Find the control port, usually 0x3f7 */ - ctlstart = rman_get_start(fdc->res_ioport) + - fdc->port_off + 7; - - bus_set_resource(dev, SYS_RES_IOPORT, 1, ctlstart, 1); - } - - /* - * Now (finally!) allocate the control port. - */ - fdc->res_ctl = bus_alloc_resource_any(dev, SYS_RES_IOPORT, - &fdc->rid_ctl, RF_ACTIVE); - if (fdc->res_ctl == 0) { - device_printf(dev, - "cannot reserve control I/O port range (control port)\n"); - return ENXIO; - } - fdc->ctlt = rman_get_bustag(fdc->res_ctl); - fdc->ctlh = rman_get_bushandle(fdc->res_ctl); - } - - fdc->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, - &fdc->rid_irq, RF_ACTIVE); - if (fdc->res_irq == 0) { - device_printf(dev, "cannot reserve interrupt line\n"); - return ENXIO; - } - - if ((fdc->flags & FDC_NODMA) == 0) { - fdc->res_drq = bus_alloc_resource_any(dev, SYS_RES_DRQ, - &fdc->rid_drq, - RF_ACTIVE); - if (fdc->res_drq == 0) { - device_printf(dev, "cannot reserve DMA request line\n"); - return ENXIO; - } - fdc->dmachan = fdc->res_drq->r_start; - } - - return 0; -} - -static void -fdc_release_resources(struct fdc_data *fdc) -{ - device_t dev; - - dev = fdc->fdc_dev; - if (fdc->res_irq != 0) { - bus_deactivate_resource(dev, SYS_RES_IRQ, fdc->rid_irq, - fdc->res_irq); - bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, - fdc->res_irq); - } - if (fdc->res_ctl != 0) { - bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, - fdc->res_ctl); - bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, - fdc->res_ctl); - } - if (fdc->res_ioport != 0) { - bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, - fdc->res_ioport); - bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, - fdc->res_ioport); - } - if (fdc->res_drq != 0) { - bus_deactivate_resource(dev, SYS_RES_DRQ, fdc->rid_drq, - fdc->res_drq); - bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, - fdc->res_drq); - } -} - -/* - * Configuration/initialization stuff, per controller. - */ - -static struct isa_pnp_id fdc_ids[] = { - {0x0007d041, "PC standard floppy disk controller"}, /* PNP0700 */ - {0x0107d041, "Standard floppy controller supporting MS Device Bay Spec"}, /* PNP0701 */ - {0} -}; - -static int -fdc_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) -{ - struct fdc_ivars *ivars = device_get_ivars(child); - - switch (which) { - case FDC_IVAR_FDUNIT: - *result = ivars->fdunit; - break; - default: - return ENOENT; - } - return 0; -} - -static int -fdc_probe(device_t dev) -{ - int error, ic_type; - struct fdc_data *fdc; - - fdc = device_get_softc(dev); - bzero(fdc, sizeof *fdc); - fdc->fdc_dev = dev; - fdc->fdctl_wr = fdctl_wr_isa; - - /* Check pnp ids */ - error = ISA_PNP_PROBE(device_get_parent(dev), dev, fdc_ids); - if (error == ENXIO) - return ENXIO; - if (error == 0) - fdc->flags |= FDC_ISPNP; - - /* Attempt to allocate our resources for the duration of the probe */ - error = fdc_alloc_resources(fdc); - if (error) - goto out; - - /* First - lets reset the floppy controller */ - fdout_wr(fdc, 0); - DELAY(100); - fdout_wr(fdc, FDO_FRST); - - /* see if it can handle a command */ - if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), - NE7_SPEC_2(2, 0), 0)) { - error = ENXIO; - goto out; - } - - if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) { - ic_type = (u_char)ic_type; - switch (ic_type) { - case 0x80: - device_set_desc(dev, "NEC 765 or clone"); - fdc->fdct = FDC_NE765; - break; - case 0x81: /* not mentioned in any hardware doc */ - case 0x90: - device_set_desc(dev, - "Enhanced floppy controller (i82077, NE72065 or clone)"); - fdc->fdct = FDC_ENHANCED; - break; - default: - device_set_desc(dev, "Generic floppy controller"); - fdc->fdct = FDC_UNKNOWN; - break; - } - } - -out: - fdc_release_resources(fdc); - return (error); -} - -#if NCARD > 0 - -static int -fdc_pccard_probe(device_t dev) -{ - int error; - struct fdc_data *fdc; - - fdc = device_get_softc(dev); - bzero(fdc, sizeof *fdc); - fdc->fdc_dev = dev; - fdc->fdctl_wr = fdctl_wr_pcmcia; - - fdc->flags |= FDC_ISPCMCIA | FDC_NODMA; - - /* Attempt to allocate our resources for the duration of the probe */ - error = fdc_alloc_resources(fdc); - if (error) - goto out; - - /* First - lets reset the floppy controller */ - fdout_wr(fdc, 0); - DELAY(100); - fdout_wr(fdc, FDO_FRST); - - /* see if it can handle a command */ - if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), - NE7_SPEC_2(2, 0), 0)) { - error = ENXIO; - goto out; - } - - device_set_desc(dev, "Y-E Data PCMCIA floppy"); - fdc->fdct = FDC_NE765; - -out: - fdc_release_resources(fdc); - return (error); -} - -#endif /* NCARD > 0 */ - -static int -fdc_detach(device_t dev) -{ - struct fdc_data *fdc; - int error; - - fdc = device_get_softc(dev); - - /* have our children detached first */ - if ((error = bus_generic_detach(dev))) - return (error); - - /* reset controller, turn motor off */ - fdout_wr(fdc, 0); - - if ((fdc->flags & FDC_NODMA) == 0) - isa_dma_release(fdc->dmachan); - - if ((fdc->flags & FDC_ATTACHED) == 0) { - device_printf(dev, "already unloaded\n"); - return (0); - } - fdc->flags &= ~FDC_ATTACHED; - - BUS_TEARDOWN_INTR(device_get_parent(dev), dev, fdc->res_irq, - fdc->fdc_intr); - fdc_release_resources(fdc); - device_printf(dev, "unload\n"); - return (0); -} - -/* - * Add a child device to the fdc controller. It will then be probed etc. - */ -static void -fdc_add_child(device_t dev, const char *name, int unit) -{ - int flags; - struct fdc_ivars *ivar; - device_t child; - - ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT | M_ZERO); - if (ivar == NULL) - return; - if (resource_int_value(name, unit, "drive", &ivar->fdunit) != 0) - ivar->fdunit = 0; - child = device_add_child(dev, name, unit); - if (child == NULL) { - free(ivar, M_DEVBUF); - return; - } - device_set_ivars(child, ivar); - if (resource_int_value(name, unit, "flags", &flags) == 0) - device_set_flags(child, flags); - if (resource_disabled(name, unit)) - device_disable(child); -} - -static int -fdc_attach(device_t dev) -{ - struct fdc_data *fdc; - const char *name, *dname; - int i, error, dunit; - - fdc = device_get_softc(dev); - error = fdc_alloc_resources(fdc); - if (error) { - device_printf(dev, "cannot re-acquire resources\n"); - return error; - } - error = BUS_SETUP_INTR(device_get_parent(dev), dev, fdc->res_irq, - INTR_TYPE_BIO | INTR_ENTROPY, fdc_intr, fdc, - &fdc->fdc_intr); - if (error) { - device_printf(dev, "cannot setup interrupt\n"); - return error; - } - fdc->fdcu = device_get_unit(dev); - fdc->flags |= FDC_ATTACHED | FDC_NEEDS_RESET; - - if ((fdc->flags & FDC_NODMA) == 0) { - /* - * Acquire the DMA channel forever, the driver will do - * the rest - * XXX should integrate with rman - */ - isa_dma_acquire(fdc->dmachan); - isa_dmainit(fdc->dmachan, MAX_SEC_SIZE); - } - fdc->state = DEVIDLE; - - /* reset controller, turn motor off, clear fdout mirror reg */ - fdout_wr(fdc, fdc->fdout = 0); - bioq_init(&fdc->head); - - /* - * Probe and attach any children. We should probably detect - * devices from the BIOS unless overridden. - */ - name = device_get_nameunit(dev); - i = 0; - while ((resource_find_match(&i, &dname, &dunit, "at", name)) == 0) - fdc_add_child(dev, dname, dunit); - - if ((error = bus_generic_attach(dev)) != 0) - return (error); - - return (0); -} - -static int -fdc_print_child(device_t me, device_t child) -{ - int retval = 0, flags; - - retval += bus_print_child_header(me, child); - retval += printf(" on %s drive %d", device_get_nameunit(me), - fdc_get_fdunit(child)); - if ((flags = device_get_flags(me)) != 0) - retval += printf(" flags %#x", flags); - retval += printf("\n"); - - return (retval); -} - -static device_method_t fdc_methods[] = { - /* Device interface */ - DEVMETHOD(device_probe, fdc_probe), - DEVMETHOD(device_attach, fdc_attach), - DEVMETHOD(device_detach, fdc_detach), - DEVMETHOD(device_shutdown, bus_generic_shutdown), - DEVMETHOD(device_suspend, bus_generic_suspend), - DEVMETHOD(device_resume, bus_generic_resume), - - /* Bus interface */ - DEVMETHOD(bus_print_child, fdc_print_child), - DEVMETHOD(bus_read_ivar, fdc_read_ivar), - /* Our children never use any other bus interface methods. */ - - { 0, 0 } -}; - -static driver_t fdc_driver = { - "fdc", - fdc_methods, - sizeof(struct fdc_data) -}; - -DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0); -DRIVER_MODULE(fdc, acpi, fdc_driver, fdc_devclass, 0, 0); - -#if NCARD > 0 - -static device_method_t fdc_pccard_methods[] = { - /* Device interface */ - DEVMETHOD(device_probe, fdc_pccard_probe), - DEVMETHOD(device_attach, fdc_attach), - DEVMETHOD(device_detach, fdc_detach), - DEVMETHOD(device_shutdown, bus_generic_shutdown), - DEVMETHOD(device_suspend, bus_generic_suspend), - DEVMETHOD(device_resume, bus_generic_resume), - - /* Bus interface */ - DEVMETHOD(bus_print_child, fdc_print_child), - DEVMETHOD(bus_read_ivar, fdc_read_ivar), - /* Our children never use any other bus interface methods. */ - - { 0, 0 } -}; - -static driver_t fdc_pccard_driver = { - "fdc", - fdc_pccard_methods, - sizeof(struct fdc_data) -}; - -DRIVER_MODULE(fdc, pccard, fdc_pccard_driver, fdc_devclass, 0, 0); - -#endif /* NCARD > 0 */ - - -/* - * Configuration/initialization, per drive. - */ -static int -fd_probe(device_t dev) -{ - int i; - u_int st0, st3; - struct fd_data *fd; - struct fdc_data *fdc; - fdsu_t fdsu; - int flags; - - fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */ - fd = device_get_softc(dev); - fdc = device_get_softc(device_get_parent(dev)); - flags = device_get_flags(dev); - - bzero(fd, sizeof *fd); - fd->dev = dev; - fd->fdc = fdc; - fd->fdsu = fdsu; - fd->fdu = device_get_unit(dev); - fd->flags = FD_UA; /* make sure fdautoselect() will be called */ - - fd->type = FD_DTYPE(flags); -/* - * XXX I think using __i386__ is wrong here since we actually want to probe - * for the machine type, not the CPU type (so non-PC arch's like the PC98 will - * fail the probe). However, for whatever reason, testing for _MACHINE_ARCH - * == i386 breaks the test on FreeBSD/Alpha. - */ -#if defined(__i386__) || defined(__amd64__) - if (fd->type == FDT_NONE && (fd->fdu == 0 || fd->fdu == 1)) { - /* Look up what the BIOS thinks we have. */ - if (fd->fdu == 0) { - if ((fdc->flags & FDC_ISPCMCIA)) - /* - * Somewhat special. No need to force the - * user to set device flags, since the Y-E - * Data PCMCIA floppy is always a 1.44 MB - * device. - */ - fd->type = FDT_144M; - else - fd->type = (rtcin(RTC_FDISKETTE) & 0xf0) >> 4; - } else { - fd->type = rtcin(RTC_FDISKETTE) & 0x0f; - } - if (fd->type == FDT_288M_1) - fd->type = FDT_288M; - } -#endif /* __i386__ || __amd64__ */ - /* is there a unit? */ - if (fd->type == FDT_NONE) - return (ENXIO); - - /* select it */ - set_motor(fdc, fdsu, TURNON); - fdc_reset(fdc); /* XXX reset, then unreset, etc. */ - DELAY(1000000); /* 1 sec */ - - /* XXX This doesn't work before the first set_motor() */ - if ((fdc->flags & FDC_HAS_FIFO) == 0 && - fdc->fdct == FDC_ENHANCED && - (device_get_flags(fdc->fdc_dev) & FDC_NO_FIFO) == 0 && - enable_fifo(fdc) == 0) { - device_printf(device_get_parent(dev), - "FIFO enabled, %d bytes threshold\n", fifo_threshold); - } - - if ((flags & FD_NO_PROBE) == 0) { - /* If we're at track 0 first seek inwards. */ - if ((fd_sense_drive_status(fdc, &st3) == 0) && - (st3 & NE7_ST3_T0)) { - /* Seek some steps... */ - if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { - /* ...wait a moment... */ - DELAY(300000); - /* make ctrlr happy: */ - fd_sense_int(fdc, 0, 0); - } - } - - for (i = 0; i < 2; i++) { - /* - * we must recalibrate twice, just in case the - * heads have been beyond cylinder 76, since - * most FDCs still barf when attempting to - * recalibrate more than 77 steps - */ - /* go back to 0: */ - if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { - /* a second being enough for full stroke seek*/ - DELAY(i == 0 ? 1000000 : 300000); - - /* anything responding? */ - if (fd_sense_int(fdc, &st0, 0) == 0 && - (st0 & NE7_ST0_EC) == 0) - break; /* already probed succesfully */ - } - } - } - - set_motor(fdc, fdsu, TURNOFF); - - if ((flags & FD_NO_PROBE) == 0 && - (st0 & NE7_ST0_EC) != 0) /* no track 0 -> no drive present */ - return (ENXIO); - - switch (fd->type) { - case FDT_12M: - device_set_desc(dev, "1200-KB 5.25\" drive"); - fd->type = FDT_12M; - break; - case FDT_144M: - device_set_desc(dev, "1440-KB 3.5\" drive"); - fd->type = FDT_144M; - break; - case FDT_288M: - device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); - fd->type = FDT_288M; - break; - case FDT_360K: - device_set_desc(dev, "360-KB 5.25\" drive"); - fd->type = FDT_360K; - break; - case FDT_720K: - device_set_desc(dev, "720-KB 3.5\" drive"); - fd->type = FDT_720K; - break; - default: - return (ENXIO); - } - fd->track = FD_NO_TRACK; - fd->fdc = fdc; - fd->fdsu = fdsu; - fd->options = 0; - callout_handle_init(&fd->toffhandle); - callout_handle_init(&fd->tohandle); - - /* initialize densities for subdevices */ - for (i = 0; i < NUMDENS; i++) - memcpy(fd->fts + i, fd_native_types + fd->type, - sizeof(struct fd_type)); - return (0); -} - -static int -fd_attach(device_t dev) -{ - struct fd_data *fd; - - fd = device_get_softc(dev); - fd->masterdev = make_dev(&fd_cdevsw, fd->fdu, - UID_ROOT, GID_OPERATOR, 0640, "fd%d", fd->fdu); - fd->masterdev->si_drv1 = fd; - fd->device_stats = devstat_new_entry(device_get_name(dev), - device_get_unit(dev), 0, DEVSTAT_NO_ORDERED_TAGS, - DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER, - DEVSTAT_PRIORITY_FD); - return (0); -} - -static int -fd_detach(device_t dev) -{ - struct fd_data *fd; - - fd = device_get_softc(dev); - untimeout(fd_turnoff, fd, fd->toffhandle); - devstat_remove_entry(fd->device_stats); - destroy_dev(fd->masterdev); - - return (0); -} - -static device_method_t fd_methods[] = { - /* Device interface */ - DEVMETHOD(device_probe, fd_probe), - DEVMETHOD(device_attach, fd_attach), - DEVMETHOD(device_detach, fd_detach), - DEVMETHOD(device_shutdown, bus_generic_shutdown), - DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ - DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ - - { 0, 0 } -}; - -static driver_t fd_driver = { - "fd", - fd_methods, - sizeof(struct fd_data) -}; - -DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, 0, 0); - -/* - * More auxiliary functions. - */ -/* - * Motor control stuff. - * Remember to not deselect the drive we're working on. - */ -static void -set_motor(struct fdc_data *fdc, int fdsu, int turnon) -{ - int fdout; - - fdout = fdc->fdout; - if (turnon) { - fdout &= ~FDO_FDSEL; - fdout |= (FDO_MOEN0 << fdsu) | FDO_FDMAEN | FDO_FRST | fdsu; - } else - fdout &= ~(FDO_MOEN0 << fdsu); - fdc->fdout = fdout; - fdout_wr(fdc, fdout); - TRACE1("[0x%x->FDOUT]", fdout); -} - -static void -fd_turnoff(void *xfd) -{ - int s; - fd_p fd = xfd; - - TRACE1("[fd%d: turnoff]", fd->fdu); - - s = splbio(); - /* - * Don't turn off the motor yet if the drive is active. - * - * If we got here, this could only mean we missed an interrupt. - * This can e. g. happen on the Y-E Date PCMCIA floppy controller - * after a controller reset. Just schedule a pseudo-interrupt - * so the state machine gets re-entered. - */ - if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) { - fdc_intr(fd->fdc); - splx(s); - return; - } - - fd->flags &= ~FD_MOTOR; - set_motor(fd->fdc, fd->fdsu, TURNOFF); - splx(s); -} - -static void -fd_motor_on(void *xfd) -{ - int s; - fd_p fd = xfd; - - s = splbio(); - fd->flags &= ~FD_MOTOR_WAIT; - if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT)) - { - fdc_intr(fd->fdc); - } - splx(s); -} - -static void -fd_turnon(fd_p fd) -{ - if(!(fd->flags & FD_MOTOR)) - { - fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT); - set_motor(fd->fdc, fd->fdsu, TURNON); - timeout(fd_motor_on, fd, hz); /* in 1 sec its ok */ - } -} - -static void -fdc_reset(fdc_p fdc) -{ - /* Try a reset, keep motor on */ - fdout_wr(fdc, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); - TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); - DELAY(100); - /* enable FDC, but defer interrupts a moment */ - fdout_wr(fdc, fdc->fdout & ~FDO_FDMAEN); - TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN); - DELAY(100); - fdout_wr(fdc, fdc->fdout); - TRACE1("[0x%x->FDOUT]", fdc->fdout); - - /* XXX after a reset, silently believe the FDC will accept commands */ - (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, - NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), - 0); - if (fdc->flags & FDC_HAS_FIFO) - (void) enable_fifo(fdc); -} - -/* - * FDC IO functions, take care of the main status register, timeout - * in case the desired status bits are never set. - * - * These PIO loops initially start out with short delays between - * each iteration in the expectation that the required condition - * is usually met quickly, so it can be handled immediately. After - * about 1 ms, stepping is increased to achieve a better timing - * accuracy in the calls to DELAY(). - */ -static int -fd_in(struct fdc_data *fdc, int *ptr) -{ - int i, j, step; - - for (j = 0, step = 1; - (i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) != (NE7_DIO|NE7_RQM) && - j < FDSTS_TIMEOUT; - j += step) { - if (i == NE7_RQM) - return (fdc_err(fdc, "ready for output in input\n")); - if (j == 1000) - step = 1000; - DELAY(step); - } - if (j >= FDSTS_TIMEOUT) - return (fdc_err(fdc, bootverbose? "input ready timeout\n": 0)); -#ifdef FDC_DEBUG - i = fddata_rd(fdc); - TRACE1("[FDDATA->0x%x]", (unsigned char)i); - *ptr = i; - return (0); -#else /* !FDC_DEBUG */ - i = fddata_rd(fdc); - if (ptr) - *ptr = i; - return (0); -#endif /* FDC_DEBUG */ -} - -static int -out_fdc(struct fdc_data *fdc, int x) -{ - int i, j, step; - - for (j = 0, step = 1; - (i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) != NE7_RQM && - j < FDSTS_TIMEOUT; - j += step) { - if (i == (NE7_DIO|NE7_RQM)) - return (fdc_err(fdc, "ready for input in output\n")); - if (j == 1000) - step = 1000; - DELAY(step); - } - if (j >= FDSTS_TIMEOUT) - return (fdc_err(fdc, bootverbose? "output ready timeout\n": 0)); - - /* Send the command and return */ - fddata_wr(fdc, x); - TRACE1("[0x%x->FDDATA]", x); - return (0); -} - -/* - * Block device driver interface functions (interspersed with even more - * auxiliary functions). - */ -static int -fdopen(dev_t dev, int flags, int mode, struct thread *td) -{ - fd_p fd; - fdc_p fdc; - int rv, unitattn, dflags; - - fd = dev->si_drv1; - if (fd == NULL) - return (ENXIO); - fdc = fd->fdc; - if ((fdc == NULL) || (fd->type == FDT_NONE)) - return (ENXIO); - dflags = device_get_flags(fd->dev); - /* - * This is a bit bogus. It's still possible that e. g. a - * descriptor gets inherited to a child, but then it's at - * least for the same subdevice. By checking FD_OPEN here, we - * can ensure that a device isn't attempted to be opened with - * different densities at the same time where the second open - * could clobber the settings from the first one. - */ - if (fd->flags & FD_OPEN) - return (EBUSY); - - if (flags & FNONBLOCK) { - /* - * Unfortunately, physio(9) discards its ioflag - * argument, thus preventing us from seeing the - * IO_NDELAY bit. So we need to keep track - * ourselves. - */ - fd->flags |= FD_NONBLOCK; - fd->ft = 0; - } else { - /* - * Figure out a unit attention condition. - * - * If UA has been forced, proceed. - * - * If the drive has no changeline support, - * or if the drive parameters have been lost - * due to previous non-blocking access, - * assume a forced UA condition. - * - * If motor is off, turn it on for a moment - * and select our drive, in order to read the - * UA hardware signal. - * - * If motor is on, and our drive is currently - * selected, just read the hardware bit. - * - * If motor is on, but active for another - * drive on that controller, we are lost. We - * cannot risk to deselect the other drive, so - * we just assume a forced UA condition to be - * on the safe side. - */ - unitattn = 0; - if ((dflags & FD_NO_CHLINE) != 0 || - (fd->flags & FD_UA) != 0 || - fd->ft == 0) { - unitattn = 1; - fd->flags &= ~FD_UA; - } else if (fdc->fdout & (FDO_MOEN0 | FDO_MOEN1 | - FDO_MOEN2 | FDO_MOEN3)) { - if ((fdc->fdout & FDO_FDSEL) == fd->fdsu) - unitattn = fdin_rd(fdc) & FDI_DCHG; - else - unitattn = 1; - } else { - set_motor(fdc, fd->fdsu, TURNON); - unitattn = fdin_rd(fdc) & FDI_DCHG; - set_motor(fdc, fd->fdsu, TURNOFF); - } - if (unitattn && (rv = fdautoselect(dev)) != 0) - return (rv); - } - fd->flags |= FD_OPEN; - /* - * Clearing the DMA overrun counter at open time is a bit messy. - * Since we're only managing one counter per controller, opening - * the second drive could mess it up. Anyway, if the DMA overrun - * condition is really persistent, it will eventually time out - * still. OTOH, clearing it here will ensure we'll at least start - * trying again after a previous (maybe even long ago) failure. - * Also, this is merely a stop-gap measure only that should not - * happen during normal operation, so we can tolerate it to be a - * bit sloppy about this. - */ - fdc->dma_overruns = 0; - - return 0; -} - -static int -fdclose(dev_t dev, int flags, int mode, struct thread *td) -{ - struct fd_data *fd; - - fd = dev->si_drv1; - fd->flags &= ~(FD_OPEN | FD_NONBLOCK); - fd->options &= ~(FDOPT_NORETRY | FDOPT_NOERRLOG | FDOPT_NOERROR); - - return (0); -} - -static void -fdstrategy(struct bio *bp) -{ - long blknum, nblocks; - int s; - fdu_t fdu; - fdc_p fdc; - fd_p fd; - size_t fdblk; - - fd = bp->bio_dev->si_drv1; - fdu = fd->fdu; - fdc = fd->fdc; - bp->bio_resid = bp->bio_bcount; - if (fd->type == FDT_NONE || fd->ft == 0) { - if (fd->type != FDT_NONE && (fd->flags & FD_NONBLOCK)) - bp->bio_error = EAGAIN; - else - bp->bio_error = ENXIO; - bp->bio_flags |= BIO_ERROR; - goto bad; - } - fdblk = 128 << (fd->ft->secsize); - if (bp->bio_cmd != FDBIO_FORMAT && bp->bio_cmd != FDBIO_RDSECTID) { - if (fd->flags & FD_NONBLOCK) { - bp->bio_error = EAGAIN; - bp->bio_flags |= BIO_ERROR; - goto bad; - } - if (bp->bio_offset < 0) { - printf( - "fd%d: fdstrat: bad request offset = %ju, bcount = %ld\n", - fdu, (intmax_t)bp->bio_offset, bp->bio_bcount); - bp->bio_error = EINVAL; - bp->bio_flags |= BIO_ERROR; - goto bad; - } - if ((bp->bio_bcount % fdblk) != 0) { - bp->bio_error = EINVAL; - bp->bio_flags |= BIO_ERROR; - goto bad; - } - } - - /* - * Set up block calculations. - */ - if (bp->bio_offset >= ((off_t)128 << fd->ft->secsize) * fd->ft->size) { - bp->bio_error = EINVAL; - bp->bio_flags |= BIO_ERROR; - goto bad; - } - blknum = bp->bio_offset / fdblk; - nblocks = fd->ft->size; - if (blknum + bp->bio_bcount / fdblk > nblocks) { - if (blknum >= nblocks) { - if (bp->bio_cmd != BIO_READ) { - bp->bio_error = ENOSPC; - bp->bio_flags |= BIO_ERROR; - } - goto bad; /* not always bad, but EOF */ - } - bp->bio_bcount = (nblocks - blknum) * fdblk; - } - bp->bio_pblkno = blknum; - s = splbio(); - bioq_disksort(&fdc->head, bp); - untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */ - devstat_start_transaction_bio(fd->device_stats, bp); - device_busy(fd->dev); - fdstart(fdc); - splx(s); - return; - -bad: - biodone(bp); -} - -/* - * fdstart - * - * We have just queued something. If the controller is not busy - * then simulate the case where it has just finished a command - * So that it (the interrupt routine) looks on the queue for more - * work to do and picks up what we just added. - * - * If the controller is already busy, we need do nothing, as it - * will pick up our work when the present work completes. - */ -static void -fdstart(struct fdc_data *fdc) -{ - int s; - - s = splbio(); - if(fdc->state == DEVIDLE) - { - fdc_intr(fdc); - } - splx(s); -} - -static void -fd_iotimeout(void *xfdc) -{ - fdc_p fdc; - int s; - - fdc = xfdc; - TRACE1("fd%d[fd_iotimeout()]", fdc->fdu); - - /* - * Due to IBM's brain-dead design, the FDC has a faked ready - * signal, hardwired to ready == true. Thus, any command - * issued if there's no diskette in the drive will _never_ - * complete, and must be aborted by resetting the FDC. - * Many thanks, Big Blue! - * The FDC must not be reset directly, since that would - * interfere with the state machine. Instead, pretend that - * the command completed but was invalid. The state machine - * will reset the FDC and retry once. - */ - s = splbio(); - fdc->status[0] = NE7_ST0_IC_IV; - fdc->flags &= ~FDC_STAT_VALID; - fdc->state = IOTIMEDOUT; - fdc_intr(fdc); - splx(s); -} - -/* Just ensure it has the right spl. */ -static void -fd_pseudointr(void *xfdc) -{ - int s; - - s = splbio(); - fdc_intr(xfdc); - splx(s); -} - -/* - * fdc_intr - * - * Keep calling the state machine until it returns a 0. - * Always called at splbio. - */ -static void -fdc_intr(void *xfdc) -{ - fdc_p fdc = xfdc; - while(fdstate(fdc)) - ; -} - -/* - * Magic pseudo-DMA initialization for YE FDC. Sets count and - * direction. - */ -#define SET_BCDR(fdc,wr,cnt,port) \ - bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port, \ - ((cnt)-1) & 0xff); \ - bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port + 1, \ - ((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f))); - -/* - * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy. - */ -static int -fdcpio(fdc_p fdc, long flags, caddr_t addr, u_int count) -{ - u_char *cptr = (u_char *)addr; - - if (flags == BIO_READ) { - if (fdc->state != PIOREAD) { - fdc->state = PIOREAD; - return(0); - } - SET_BCDR(fdc, 0, count, 0); - bus_space_read_multi_1(fdc->portt, fdc->porth, fdc->port_off + - FDC_YE_DATAPORT, cptr, count); - } else { - bus_space_write_multi_1(fdc->portt, fdc->porth, fdc->port_off + - FDC_YE_DATAPORT, cptr, count); - SET_BCDR(fdc, 0, count, 0); - } - return(1); -} - -/* - * Try figuring out the density of the media present in our device. - */ -static int -fdautoselect(dev_t dev) -{ - fd_p fd; - struct fd_type *fdtp; - struct fdc_readid id; - int i, n, oopts, rv; - - fd = dev->si_drv1; - - switch (fd->type) { - default: - return (ENXIO); - - case FDT_360K: - case FDT_720K: - /* no autoselection on those drives */ - fd->ft = fd_native_types + fd->type; - return (0); - - case FDT_12M: - fdtp = fd_searchlist_12m; - n = sizeof fd_searchlist_12m / sizeof(struct fd_type); - break; - - case FDT_144M: - fdtp = fd_searchlist_144m; - n = sizeof fd_searchlist_144m / sizeof(struct fd_type); - break; - - case FDT_288M: - fdtp = fd_searchlist_288m; - n = sizeof fd_searchlist_288m / sizeof(struct fd_type); - break; - } - - /* - * Try reading sector ID fields, first at cylinder 0, head 0, - * then at cylinder 2, head N. We don't probe cylinder 1, - * since for 5.25in DD media in a HD drive, there are no data - * to read (2 step pulses per media cylinder required). For - * two-sided media, the second probe always goes to head 1, so - * we can tell them apart from single-sided media. As a - * side-effect this means that single-sided media should be - * mentioned in the search list after two-sided media of an - * otherwise identical density. Media with a different number - * of sectors per track but otherwise identical parameters - * cannot be distinguished at all. - * - * If we successfully read an ID field on both cylinders where - * the recorded values match our expectation, we are done. - * Otherwise, we try the next density entry from the table. - * - * Stepping to cylinder 2 has the side-effect of clearing the - * unit attention bit. - */ - oopts = fd->options; - fd->options |= FDOPT_NOERRLOG | FDOPT_NORETRY; - for (i = 0; i < n; i++, fdtp++) { - fd->ft = fdtp; - - id.cyl = id.head = 0; - rv = fdmisccmd(dev, FDBIO_RDSECTID, &id); - if (rv != 0) - continue; - if (id.cyl != 0 || id.head != 0 || - id.secshift != fdtp->secsize) - continue; - id.cyl = 2; - id.head = fd->ft->heads - 1; - rv = fdmisccmd(dev, FDBIO_RDSECTID, &id); - if (id.cyl != 2 || id.head != fdtp->heads - 1 || - id.secshift != fdtp->secsize) - continue; - if (rv == 0) - break; - } - - fd->options = oopts; - if (i == n) { - if (bootverbose) - device_printf(fd->dev, "autoselection failed\n"); - fd->ft = 0; - return (EIO); - } else { - if (bootverbose) - device_printf(fd->dev, "autoselected %d KB medium\n", - fd->ft->size / 2); - return (0); - } -} - - -/* - * The controller state machine. - * - * If it returns a non zero value, it should be called again immediately. - */ -static int -fdstate(fdc_p fdc) -{ - struct fdc_readid *idp; - int read, format, rdsectid, cylinder, head, i, sec = 0, sectrac; - int st0, cyl, st3, idf, ne7cmd, mfm, steptrac; - unsigned long blknum; - fdu_t fdu = fdc->fdu; - fd_p fd; - register struct bio *bp; - struct fd_formb *finfo = NULL; - size_t fdblk; - - bp = fdc->bp; - if (bp == NULL) { - bp = bioq_first(&fdc->head); - if (bp != NULL) { - bioq_remove(&fdc->head, bp); - fdc->bp = bp; - } - } - if (bp == NULL) { - /* - * Nothing left for this controller to do, - * force into the IDLE state. - */ - fdc->state = DEVIDLE; - if (fdc->fd) { - device_printf(fdc->fdc_dev, - "unexpected valid fd pointer\n"); - fdc->fd = (fd_p) 0; - fdc->fdu = -1; - } - TRACE1("[fdc%d IDLE]", fdc->fdcu); - return (0); - } - fd = bp->bio_dev->si_drv1; - fdu = fd->fdu; - fdblk = 128 << fd->ft->secsize; - if (fdc->fd && (fd != fdc->fd)) - device_printf(fd->dev, "confused fd pointers\n"); - read = bp->bio_cmd == BIO_READ; - mfm = (fd->ft->flags & FL_MFM)? NE7CMD_MFM: 0; - steptrac = (fd->ft->flags & FL_2STEP)? 2: 1; - if (read) - idf = ISADMA_READ; - else - idf = ISADMA_WRITE; - format = bp->bio_cmd == FDBIO_FORMAT; - rdsectid = bp->bio_cmd == FDBIO_RDSECTID; - if (format) - finfo = (struct fd_formb *)bp->bio_data; - TRACE1("fd%d", fdu); - TRACE1("[%s]", fdstates[fdc->state]); - TRACE1("(0x%x)", fd->flags); - untimeout(fd_turnoff, fd, fd->toffhandle); - fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); - switch (fdc->state) - { - case DEVIDLE: - case FINDWORK: /* we have found new work */ - fdc->retry = 0; - fd->skip = 0; - fdc->fd = fd; - fdc->fdu = fdu; - fdc->fdctl_wr(fdc, fd->ft->trans); - TRACE1("[0x%x->FDCTL]", fd->ft->trans); - /* - * If the next drive has a motor startup pending, then - * it will start up in its own good time. - */ - if(fd->flags & FD_MOTOR_WAIT) { - fdc->state = MOTORWAIT; - return (0); /* will return later */ - } - /* - * Maybe if it's not starting, it SHOULD be starting. - */ - if (!(fd->flags & FD_MOTOR)) - { - fdc->state = MOTORWAIT; - fd_turnon(fd); - return (0); /* will return later */ - } - else /* at least make sure we are selected */ - { - set_motor(fdc, fd->fdsu, TURNON); - } - if (fdc->flags & FDC_NEEDS_RESET) { - fdc->state = RESETCTLR; - fdc->flags &= ~FDC_NEEDS_RESET; - } else - fdc->state = DOSEEK; - return (1); /* will return immediately */ - - case DOSEEK: - blknum = bp->bio_pblkno + fd->skip / fdblk; - cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); - if (cylinder == fd->track) - { - fdc->state = SEEKCOMPLETE; - return (1); /* will return immediately */ - } - if (fd_cmd(fdc, 3, NE7CMD_SEEK, - fd->fdsu, cylinder * steptrac, 0)) - { - /* - * Seek command not accepted, looks like - * the FDC went off to the Saints... - */ - fdc->retry = 6; /* try a reset */ - return(retrier(fdc)); - } - fd->track = FD_NO_TRACK; - fdc->state = SEEKWAIT; - return(0); /* will return later */ - - case SEEKWAIT: - /* allow heads to settle */ - timeout(fd_pseudointr, fdc, hz / 16); - fdc->state = SEEKCOMPLETE; - return(0); /* will return later */ - - case SEEKCOMPLETE : /* seek done, start DMA */ - blknum = bp->bio_pblkno + fd->skip / fdblk; - cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); - - /* Make sure seek really happened. */ - if(fd->track == FD_NO_TRACK) { - int descyl = cylinder * steptrac; - do { - /* - * This might be a "ready changed" interrupt, - * which cannot really happen since the - * RDY pin is hardwired to + 5 volts. This - * generally indicates a "bouncing" intr - * line, so do one of the following: - * - * When running on an enhanced FDC that is - * known to not go stuck after responding - * with INVALID, fetch all interrupt states - * until seeing either an INVALID or a - * real interrupt condition. - * - * When running on a dumb old NE765, give - * up immediately. The controller will - * provide up to four dummy RC interrupt - * conditions right after reset (for the - * corresponding four drives), so this is - * our only chance to get notice that it - * was not the FDC that caused the interrupt. - */ - if (fd_sense_int(fdc, &st0, &cyl) - == FD_NOT_VALID) - return (0); /* will return later */ - if(fdc->fdct == FDC_NE765 - && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) - return (0); /* hope for a real intr */ - } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); - - if (0 == descyl) { - int failed = 0; - /* - * seek to cyl 0 requested; make sure we are - * really there - */ - if (fd_sense_drive_status(fdc, &st3)) - failed = 1; - if ((st3 & NE7_ST3_T0) == 0) { - printf( - "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n", - fdu, st3, NE7_ST3BITS); - failed = 1; - } - - if (failed) { - if(fdc->retry < 3) - fdc->retry = 3; - return (retrier(fdc)); - } - } - - if (cyl != descyl) { - printf( - "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n", - fdu, descyl, cyl, st0); - if (fdc->retry < 3) - fdc->retry = 3; - return (retrier(fdc)); - } - } - - fd->track = cylinder; - if (format) - fd->skip = (char *)&(finfo->fd_formb_cylno(0)) - - (char *)finfo; - if (!rdsectid && !(fdc->flags & FDC_NODMA)) - isa_dmastart(idf, bp->bio_data+fd->skip, - format ? bp->bio_bcount : fdblk, fdc->dmachan); - blknum = bp->bio_pblkno + fd->skip / fdblk; - sectrac = fd->ft->sectrac; - sec = blknum % (sectrac * fd->ft->heads); - head = sec / sectrac; - sec = sec % sectrac + 1; - if (head != 0 && fd->ft->offset_side2 != 0) - sec += fd->ft->offset_side2; - fd->hddrv = ((head&1)<<2)+fdu; - - if(format || !(read || rdsectid)) - { - /* make sure the drive is writable */ - if(fd_sense_drive_status(fdc, &st3) != 0) - { - /* stuck controller? */ - if (!(fdc->flags & FDC_NODMA)) - isa_dmadone(idf, - bp->bio_data + fd->skip, - format ? bp->bio_bcount : fdblk, - fdc->dmachan); - fdc->retry = 6; /* reset the beast */ - return (retrier(fdc)); - } - if(st3 & NE7_ST3_WP) - { - /* - * XXX YES! this is ugly. - * in order to force the current operation - * to fail, we will have to fake an FDC - * error - all error handling is done - * by the retrier() - */ - fdc->status[0] = NE7_ST0_IC_AT; - fdc->status[1] = NE7_ST1_NW; - fdc->status[2] = 0; - fdc->status[3] = fd->track; - fdc->status[4] = head; - fdc->status[5] = sec; - fdc->retry = 8; /* break out immediately */ - fdc->state = IOTIMEDOUT; /* not really... */ - return (1); /* will return immediately */ - } - } - - if (format) { - ne7cmd = NE7CMD_FORMAT | mfm; - if (fdc->flags & FDC_NODMA) { - /* - * This seems to be necessary for - * whatever obscure reason; if we omit - * it, we end up filling the sector ID - * fields of the newly formatted track - * entirely with garbage, causing - * `wrong cylinder' errors all over - * the place when trying to read them - * back. - * - * Umpf. - */ - SET_BCDR(fdc, 1, bp->bio_bcount, 0); - - (void)fdcpio(fdc,bp->bio_cmd, - bp->bio_data+fd->skip, - bp->bio_bcount); - - } - /* formatting */ - if(fd_cmd(fdc, 6, ne7cmd, head << 2 | fdu, - finfo->fd_formb_secshift, - finfo->fd_formb_nsecs, - finfo->fd_formb_gaplen, - finfo->fd_formb_fillbyte, 0)) { - /* controller fell over */ - if (!(fdc->flags & FDC_NODMA)) - isa_dmadone(idf, - bp->bio_data + fd->skip, - format ? bp->bio_bcount : fdblk, - fdc->dmachan); - fdc->retry = 6; - return (retrier(fdc)); - } - } else if (rdsectid) { - ne7cmd = NE7CMD_READID | mfm; - if (fd_cmd(fdc, 2, ne7cmd, head << 2 | fdu, 0)) { - /* controller jamming */ - fdc->retry = 6; - return (retrier(fdc)); - } - } else { - /* read or write operation */ - ne7cmd = (read ? NE7CMD_READ | NE7CMD_SK : NE7CMD_WRITE) | mfm; - if (fdc->flags & FDC_NODMA) { - /* - * This seems to be necessary even when - * reading data. - */ - SET_BCDR(fdc, 1, fdblk, 0); - - /* - * Perform the write pseudo-DMA before - * the WRITE command is sent. - */ - if (!read) - (void)fdcpio(fdc,bp->bio_cmd, - bp->bio_data+fd->skip, - fdblk); - } - if (fd_cmd(fdc, 9, - ne7cmd, - head << 2 | fdu, /* head & unit */ - fd->track, /* track */ - head, - sec, /* sector + 1 */ - fd->ft->secsize, /* sector size */ - sectrac, /* sectors/track */ - fd->ft->gap, /* gap size */ - fd->ft->datalen, /* data length */ - 0)) { - /* the beast is sleeping again */ - if (!(fdc->flags & FDC_NODMA)) - isa_dmadone(idf, - bp->bio_data + fd->skip, - format ? bp->bio_bcount : fdblk, - fdc->dmachan); - fdc->retry = 6; - return (retrier(fdc)); - } - } - if (!rdsectid && (fdc->flags & FDC_NODMA)) - /* - * If this is a read, then simply await interrupt - * before performing PIO. - */ - if (read && !fdcpio(fdc,bp->bio_cmd, - bp->bio_data+fd->skip,fdblk)) { - fd->tohandle = timeout(fd_iotimeout, fdc, hz); - return(0); /* will return later */ - } - - /* - * Write (or format) operation will fall through and - * await completion interrupt. - */ - fdc->state = IOCOMPLETE; - fd->tohandle = timeout(fd_iotimeout, fdc, hz); - return (0); /* will return later */ - - case PIOREAD: - /* - * Actually perform the PIO read. The IOCOMPLETE case - * removes the timeout for us. - */ - (void)fdcpio(fdc,bp->bio_cmd,bp->bio_data+fd->skip,fdblk); - fdc->state = IOCOMPLETE; - /* FALLTHROUGH */ - case IOCOMPLETE: /* IO done, post-analyze */ - untimeout(fd_iotimeout, fdc, fd->tohandle); - - if (fd_read_status(fdc)) { - if (!rdsectid && !(fdc->flags & FDC_NODMA)) - isa_dmadone(idf, bp->bio_data + fd->skip, - format ? bp->bio_bcount : fdblk, - fdc->dmachan); - if (fdc->retry < 6) - fdc->retry = 6; /* force a reset */ - return (retrier(fdc)); - } - - fdc->state = IOTIMEDOUT; - - /* FALLTHROUGH */ - case IOTIMEDOUT: - if (!rdsectid && !(fdc->flags & FDC_NODMA)) - isa_dmadone(idf, bp->bio_data + fd->skip, - format ? bp->bio_bcount : fdblk, fdc->dmachan); - if (fdc->status[0] & NE7_ST0_IC) { - if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT - && fdc->status[1] & NE7_ST1_OR) { - /* - * DMA overrun. Someone hogged the bus and - * didn't release it in time for the next - * FDC transfer. - * - * We normally restart this without bumping - * the retry counter. However, in case - * something is seriously messed up (like - * broken hardware), we rather limit the - * number of retries so the IO operation - * doesn't block indefinately. - */ - if (fdc->dma_overruns++ < FDC_DMAOV_MAX) { - fdc->state = SEEKCOMPLETE; - return (1);/* will return immediately */ - } /* else fall through */ - } - if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV - && fdc->retry < 6) - fdc->retry = 6; /* force a reset */ - else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT - && fdc->status[2] & NE7_ST2_WC - && fdc->retry < 3) - fdc->retry = 3; /* force recalibrate */ - return (retrier(fdc)); - } - /* All OK */ - if (rdsectid) { - /* copy out ID field contents */ - idp = (struct fdc_readid *)bp->bio_data; - idp->cyl = fdc->status[3]; - idp->head = fdc->status[4]; - idp->sec = fdc->status[5]; - idp->secshift = fdc->status[6]; - } - /* Operation successful, retry DMA overruns again next time. */ - fdc->dma_overruns = 0; - fd->skip += fdblk; - if (!rdsectid && !format && fd->skip < bp->bio_bcount) { - /* set up next transfer */ - fdc->state = DOSEEK; - } else { - /* ALL DONE */ - fd->skip = 0; - bp->bio_resid = 0; - fdc->bp = NULL; - device_unbusy(fd->dev); - biofinish(bp, fd->device_stats, 0); - fdc->fd = (fd_p) 0; - fdc->fdu = -1; - fdc->state = FINDWORK; - } - return (1); /* will return immediately */ - - case RESETCTLR: - fdc_reset(fdc); - fdc->retry++; - fdc->state = RESETCOMPLETE; - return (0); /* will return later */ - - case RESETCOMPLETE: - /* - * Discard all the results from the reset so that they - * can't cause an unexpected interrupt later. - */ - for (i = 0; i < 4; i++) - (void)fd_sense_int(fdc, &st0, &cyl); - fdc->state = STARTRECAL; - /* FALLTHROUGH */ - case STARTRECAL: - if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) { - /* arrgl */ - fdc->retry = 6; - return (retrier(fdc)); - } - fdc->state = RECALWAIT; - return (0); /* will return later */ - - case RECALWAIT: - /* allow heads to settle */ - timeout(fd_pseudointr, fdc, hz / 8); - fdc->state = RECALCOMPLETE; - return (0); /* will return later */ - - case RECALCOMPLETE: - do { - /* - * See SEEKCOMPLETE for a comment on this: - */ - if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) - return (0); /* will return later */ - if(fdc->fdct == FDC_NE765 - && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) - return (0); /* hope for a real intr */ - } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); - if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0) - { - if(fdc->retry > 3) - /* - * A recalibrate from beyond cylinder 77 - * will "fail" due to the FDC limitations; - * since people used to complain much about - * the failure message, try not logging - * this one if it seems to be the first - * time in a line. - */ - printf("fd%d: recal failed ST0 %b cyl %d\n", - fdu, st0, NE7_ST0BITS, cyl); - if(fdc->retry < 3) fdc->retry = 3; - return (retrier(fdc)); - } - fd->track = 0; - /* Seek (probably) necessary */ - fdc->state = DOSEEK; - return (1); /* will return immediately */ - - case MOTORWAIT: - if(fd->flags & FD_MOTOR_WAIT) - { - return (0); /* time's not up yet */ - } - if (fdc->flags & FDC_NEEDS_RESET) { - fdc->state = RESETCTLR; - fdc->flags &= ~FDC_NEEDS_RESET; - } else - fdc->state = DOSEEK; - return (1); /* will return immediately */ - - default: - device_printf(fdc->fdc_dev, "unexpected FD int->"); - if (fd_read_status(fdc) == 0) - printf("FDC status :%x %x %x %x %x %x %x ", - fdc->status[0], - fdc->status[1], - fdc->status[2], - fdc->status[3], - fdc->status[4], - fdc->status[5], - fdc->status[6] ); - else - printf("No status available "); - if (fd_sense_int(fdc, &st0, &cyl) != 0) - { - printf("[controller is dead now]\n"); - return (0); /* will return later */ - } - printf("ST0 = %x, PCN = %x\n", st0, cyl); - return (0); /* will return later */ - } - /* noone should ever get here */ -} - -static int -retrier(struct fdc_data *fdc) -{ - struct bio *bp; - struct fd_data *fd; - int fdu; - - bp = fdc->bp; - - /* XXX shouldn't this be cached somewhere? */ - fd = bp->bio_dev->si_drv1; - fdu = fd->fdu; - if (fd->options & FDOPT_NORETRY) - goto fail; - - switch (fdc->retry) { - case 0: case 1: case 2: - fdc->state = SEEKCOMPLETE; - break; - case 3: case 4: case 5: - fdc->state = STARTRECAL; - break; - case 6: - fdc->state = RESETCTLR; - break; - case 7: - break; - default: - fail: - if ((fd->options & FDOPT_NOERRLOG) == 0) { - disk_err(bp, "hard error", - fdc->fd->skip / DEV_BSIZE, 0); - if (fdc->flags & FDC_STAT_VALID) { - printf( - " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n", - fdc->status[0], NE7_ST0BITS, - fdc->status[1], NE7_ST1BITS, - fdc->status[2], NE7_ST2BITS, - fdc->status[3], fdc->status[4], - fdc->status[5]); - } - else - printf(" (No status)\n"); - } - if ((fd->options & FDOPT_NOERROR) == 0) { - bp->bio_flags |= BIO_ERROR; - bp->bio_error = EIO; - bp->bio_resid = bp->bio_bcount - fdc->fd->skip; - } else - bp->bio_resid = 0; - fdc->bp = NULL; - fdc->fd->skip = 0; - device_unbusy(fd->dev); - biofinish(bp, fdc->fd->device_stats, 0); - fdc->state = FINDWORK; - fdc->flags |= FDC_NEEDS_RESET; - fdc->fd = (fd_p) 0; - fdc->fdu = -1; - return (1); - } - fdc->retry++; - return (1); -} - -static void -fdbiodone(struct bio *bp) -{ - wakeup(bp); -} - -static int -fdmisccmd(dev_t dev, u_int cmd, void *data) -{ - fdu_t fdu; - fd_p fd; - struct bio *bp; - struct fd_formb *finfo; - struct fdc_readid *idfield; - size_t fdblk; - int error; - - fd = dev->si_drv1; - fdu = fd->fdu; - fdblk = 128 << fd->ft->secsize; - finfo = (struct fd_formb *)data; - idfield = (struct fdc_readid *)data; - - bp = malloc(sizeof(struct bio), M_TEMP, M_WAITOK | M_ZERO); - - /* - * Set up a bio request for fdstrategy(). bio_offset is faked - * so that fdstrategy() will seek to the the requested - * cylinder, and use the desired head. - */ - bp->bio_cmd = cmd; - if (cmd == FDBIO_FORMAT) { - bp->bio_offset = - (finfo->cyl * (fd->ft->sectrac * fd->ft->heads) + - finfo->head * fd->ft->sectrac) * fdblk; - bp->bio_bcount = sizeof(struct fd_idfield_data) * - finfo->fd_formb_nsecs; - } else if (cmd == FDBIO_RDSECTID) { - bp->bio_offset = - (idfield->cyl * (fd->ft->sectrac * fd->ft->heads) + - idfield->head * fd->ft->sectrac) * fdblk; - bp->bio_bcount = sizeof(struct fdc_readid); - } else - panic("wrong cmd in fdmisccmd()"); - bp->bio_data = data; - bp->bio_dev = dev; - bp->bio_done = fdbiodone; - bp->bio_flags = 0; - - /* Now run the command. */ - fdstrategy(bp); - error = biowait(bp, "fdcmd"); - - free(bp, M_TEMP); - return (error); -} - -static int -fdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td) -{ - fdu_t fdu; - fd_p fd; - struct fdc_status *fsp; - struct fdc_readid *rid; - int error; - - fd = dev->si_drv1; - fdu = fd->fdu; - - /* - * First, handle everything that could be done with - * FD_NONBLOCK still being set. - */ - switch (cmd) { - - case DIOCGMEDIASIZE: - if (fd->ft == 0) - return ((fd->flags & FD_NONBLOCK) ? EAGAIN : ENXIO); - *(off_t *)addr = (128 << (fd->ft->secsize)) * fd->ft->size; - return (0); - - case DIOCGSECTORSIZE: - if (fd->ft == 0) - return ((fd->flags & FD_NONBLOCK) ? EAGAIN : ENXIO); - *(u_int *)addr = 128 << (fd->ft->secsize); - return (0); - - case FIONBIO: - if (*(int *)addr != 0) - fd->flags |= FD_NONBLOCK; - else { - if (fd->ft == 0) { - /* - * No drive type has been selected yet, - * cannot turn FNONBLOCK off. - */ - return (EINVAL); - } - fd->flags &= ~FD_NONBLOCK; - } - return (0); - - case FIOASYNC: - /* keep the generic fcntl() code happy */ - return (0); - - case FD_GTYPE: /* get drive type */ - if (fd->ft == 0) - /* no type known yet, return the native type */ - *(struct fd_type *)addr = fd_native_types[fd->type]; - else - *(struct fd_type *)addr = *fd->ft; - return (0); - - case FD_STYPE: /* set drive type */ - /* - * Allow setting drive type temporarily iff - * currently unset. Used for fdformat so any - * user can set it, and then start formatting. - */ - if (fd->ft) - return (EINVAL); /* already set */ - fd->fts[0] = *(struct fd_type *)addr; - fd->ft = &fd->fts[0]; - fd->flags |= FD_UA; - return (0); - - case FD_GOPTS: /* get drive options */ - *(int *)addr = fd->options + FDOPT_AUTOSEL; - return (0); - - case FD_SOPTS: /* set drive options */ - fd->options = *(int *)addr & ~FDOPT_AUTOSEL; - return (0); - -#ifdef FDC_DEBUG - case FD_DEBUG: - if ((fd_debug != 0) != (*(int *)addr != 0)) { - fd_debug = (*(int *)addr != 0); - printf("fd%d: debugging turned %s\n", - fd->fdu, fd_debug ? "on" : "off"); - } - return (0); -#endif - - case FD_CLRERR: - if (suser(td) != 0) - return (EPERM); - fd->fdc->fdc_errs = 0; - return (0); - - case FD_GSTAT: - fsp = (struct fdc_status *)addr; - if ((fd->fdc->flags & FDC_STAT_VALID) == 0) - return (EINVAL); - memcpy(fsp->status, fd->fdc->status, 7 * sizeof(u_int)); - return (0); - - case FD_GDTYPE: - *(enum fd_drivetype *)addr = fd->type; - return (0); - } - - /* - * Now handle everything else. Make sure we have a valid - * drive type. - */ - if (fd->flags & FD_NONBLOCK) - return (EAGAIN); - if (fd->ft == 0) - return (ENXIO); - error = 0; - - switch (cmd) { - - case FD_FORM: - if ((flag & FWRITE) == 0) - return (EBADF); /* must be opened for writing */ - if (((struct fd_formb *)addr)->format_version != - FD_FORMAT_VERSION) - return (EINVAL); /* wrong version of formatting prog */ - error = fdmisccmd(dev, FDBIO_FORMAT, addr); - break; - - case FD_GTYPE: /* get drive type */ - *(struct fd_type *)addr = *fd->ft; - break; - - case FD_STYPE: /* set drive type */ - /* this is considered harmful; only allow for superuser */ - if (suser(td) != 0) - return (EPERM); - *fd->ft = *(struct fd_type *)addr; - break; - - case FD_GOPTS: /* get drive options */ - *(int *)addr = fd->options; - break; - - case FD_SOPTS: /* set drive options */ - fd->options = *(int *)addr; - break; - -#ifdef FDC_DEBUG - case FD_DEBUG: - if ((fd_debug != 0) != (*(int *)addr != 0)) { - fd_debug = (*(int *)addr != 0); - printf("fd%d: debugging turned %s\n", - fd->fdu, fd_debug ? "on" : "off"); - } - break; -#endif - - case FD_CLRERR: - if (suser(td) != 0) - return (EPERM); - fd->fdc->fdc_errs = 0; - break; - - case FD_GSTAT: - fsp = (struct fdc_status *)addr; - if ((fd->fdc->flags & FDC_STAT_VALID) == 0) - return (EINVAL); - memcpy(fsp->status, fd->fdc->status, 7 * sizeof(u_int)); - break; - - case FD_READID: - rid = (struct fdc_readid *)addr; - if (rid->cyl > MAX_CYLINDER || rid->head > MAX_HEAD) - return (EINVAL); - error = fdmisccmd(dev, FDBIO_RDSECTID, addr); - break; - - default: - error = ENOTTY; - break; - } - return (error); -} diff --git a/sys/isa/fdreg.h b/sys/isa/fdreg.h deleted file mode 100644 index 43a52404dd3a..000000000000 --- a/sys/isa/fdreg.h +++ /dev/null @@ -1,67 +0,0 @@ -/*- - * Copyright (c) 1991 The Regents of the University of California. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * from: @(#)fdreg.h 7.1 (Berkeley) 5/9/91 - * $FreeBSD$ - */ - -/* - * AT floppy controller registers and bitfields - */ - -/* uses NEC765 controller */ -#include - -/* registers */ -#define FDOUT 2 /* Digital Output Register (W) */ -#define FDO_FDSEL 0x03 /* floppy device select */ -#define FDO_FRST 0x04 /* floppy controller reset */ -#define FDO_FDMAEN 0x08 /* enable floppy DMA and Interrupt */ -#define FDO_MOEN0 0x10 /* motor enable drive 0 */ -#define FDO_MOEN1 0x20 /* motor enable drive 1 */ -#define FDO_MOEN2 0x40 /* motor enable drive 2 */ -#define FDO_MOEN3 0x80 /* motor enable drive 3 */ - -#define FDSTS 4 /* NEC 765 Main Status Register (R) */ -#define FDDATA 5 /* NEC 765 Data Register (R/W) */ -#define FDCTL 7 /* Control Register (W) */ - -/* - * The definitions for FDC_500KBPS etc. have been moved out to - * since they need to be visible in userland. They cover the lower two bits - * of FDCTL when used for output. - */ -/* - * this is the secret PIO data port (offset from base) - */ -#define FDC_YE_DATAPORT 6 - -#define FDIN 7 /* Digital Input Register (R) */ -#define FDI_DCHG 0x80 /* diskette has been changed */ - /* requires drive and motor being selected */ - /* is cleared by any step pulse to drive */