/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2005 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #pragma ident "%Z%%M% %I% %E% SMI" /* * Intel 82077 Floppy Disk Driver */ /* * Notes * * 0. The driver supports two flavors of hardware design: * "SUNW,fdtwo" - sun4m - 82077 with sun4m style Auxio * "fdthree" - sun4u - 82077 with DMA * In addition it supports an apparent bug in some versions of * the 82077 controller. * * 1. The driver is mostly set up for multiple controllers, multiple * drives. However- we *do* assume the use of the AUXIO register, and * if we ever have > 1 fdc, we'll have to see what that means. This * is all intrinsically machine specific, but there isn't much we * can do about it. * * 2. The driver also is structured to deal with one drive active at * a time. This is because the 82072 chip (no longer supported) was * known to be buggy with respect to overlapped seeks. * * 3. The high level interrupt code is in assembler, and runs in a * sparc trap window. It acts as a pseudo-dma engine as well as * handles a couple of other interrupts. When it gets its job done, * it schedules a second stage interrupt (soft interrupt) which * is then fielded here in fd_lointr. When DMA is used, the fdintr_dma * interrupt handler is used. * * 4. Nearly all locking is done on a lower level MUTEX_DRIVER * mutex. The locking is quite conservative, and is generally * established very close to any of the entries into the driver. * There is nearly no locking done of the high level MUTEX_DRIVER * mutex (which generally is a SPIN mutex because the floppy usually * interrupts above LOCK_LEVEL). The assembler high level interrupt * handler grabs the high level mutex, but the code in the driver * here is especially structured to not need to do this. * * 5. Fdrawioctl commands that pass data are not optimized for * speed. If they need to be faster, the driver structure will * have to be redone such that fdrawioctl calls physio after * cons'ing up a uio structure and that fdstart will be able * to detect that a particular buffer is a 'special' buffer. * * 6. Removable media support is not complete. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * included to check for ELC or SLC which report floppy controller that */ #include #include "sys/fdvar.h" #include "sys/fdreg.h" #include "sys/dma_i8237A.h" /* * Defines */ #define KIOSP KSTAT_IO_PTR(un->un_iostat) #define KIOIP KSTAT_INTR_PTR(fdc->c_intrstat) #define MEDIUM_DENSITY 0x40 #define SEC_SIZE_CODE (fdctlr.c_csb->csb_unit]->un_chars->medium ? 3 : 2) #define CMD_READ (MT + SK + FDRAW_RDCMD + MFM) #define CMD_WRITE (MT + FDRAW_WRCMD + MFM) #define C CE_CONT #define FD_POLLABLE_PROP "pollable" /* prom property */ #define FD_MANUAL_EJECT "manual" /* prom property */ #define FD_UNIT "unit" /* prom property */ /* * Sony MP-F17W-50D Drive Parameters * High Capacity * Capacity unformatted 2Mb * Capacity formatted 1.47Mb * Encoding method MFM * Recording density 17434 bpi * Track density 135 tpi * Cylinders 80 * Heads 2 * Tracks 160 * Rotational speed 300 rpm * Transfer rate 250/500 kbps * Latency (average) 100 ms * Access time * Average 95 ms * Track to track 3 ms * Head settling time 15 ms * Motor start time 500 ms * Head load time ? ms */ /* * The max_fd_dma_len is used only when southbridge is present. * It has been observed that when IFB tests are run the floppy dma could get * starved and result in underrun errors. After experimenting it was found that * doing dma in chunks of 2048 works OK. * The reason for making this a global variable is that there could be * situations under which the customer would like to get full performance * from floppy. He may not be having IFB boards that cause underrun errors. * Under those conditions we could set this value to a much higher value * by editing /etc/system file. */ int max_fd_dma_len = 2048; static void quiesce_fd_interrupt(struct fdctlr *); /* * Character/block entry points function prototypes */ static int fd_open(dev_t *, int, int, cred_t *); static int fd_close(dev_t, int, int, cred_t *); static int fd_strategy(struct buf *); static int fd_read(dev_t, struct uio *, cred_t *); static int fd_write(dev_t, struct uio *, cred_t *); static int fd_ioctl(dev_t, int, intptr_t, int, cred_t *, int *); static int fd_prop_op(dev_t, dev_info_t *, ddi_prop_op_t, int, char *, caddr_t, int *); /* * Device operations (dev_ops) entries function prototypes */ static int fd_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result); static int fd_attach(dev_info_t *, ddi_attach_cmd_t); static int fd_detach(dev_info_t *, ddi_detach_cmd_t); static int fd_power(dev_info_t *dip, int component, int level); /* * Internal functions */ static int fd_attach_check_drive(struct fdctlr *fdc); static int fd_attach_det_ctlr(dev_info_t *dip, struct fdctlr *fdc); static int fd_attach_map_regs(dev_info_t *dip, struct fdctlr *fdc); static int fd_attach_register_interrupts(dev_info_t *dip, struct fdctlr *fdc, int *hard); static int fd_build_label_vtoc(struct fdunit *, struct vtoc *); static void fd_build_user_vtoc(struct fdunit *, struct vtoc *); static int fdcheckdisk(struct fdctlr *fdc, int unit); static int fd_check_media(dev_t dev, enum dkio_state state); static void fd_cleanup(dev_info_t *dip, struct fdctlr *fdc, int hard, int locks); static void fdeject(struct fdctlr *, int unit); static int fdexec(struct fdctlr *fdc, int flags); static void fdexec_turn_on_motor(struct fdctlr *fdc, int flags, uint_t unit); static int fdformat(struct fdctlr *fdc, int unit, int cyl, int hd); static caddr_t fd_getauxiova(); static struct fdctlr *fd_getctlr(dev_t); static void fdgetcsb(struct fdctlr *); static int fdgetlabel(struct fdctlr *fdc, int unit); enum dkio_state fd_get_media_state(struct fdctlr *, int); static uint_t fdintr_dma(); static int fd_isauxiodip(dev_info_t *); static uint_t fd_lointr(caddr_t arg); static void fd_media_watch(void *); static void fdmotoff(void *); static int fd_part_is_open(struct fdunit *un, int part); static int fdrawioctl(struct fdctlr *, int, intptr_t, int); static int fdrecalseek(struct fdctlr *fdc, int unit, int arg, int execflg); static int fdrecover(struct fdctlr *); static void fdretcsb(struct fdctlr *); static int fdreset(struct fdctlr *); static int fdrw(struct fdctlr *fdc, int, int, int, int, int, caddr_t, uint_t); static void fdselect(struct fdctlr *fdc, int unit, int onoff); static int fdsensedrv(struct fdctlr *fdc, int unit); static int fdsense_chng(struct fdctlr *, int unit); static void fdstart(struct fdctlr *); static int fdstart_dma(register struct fdctlr *fdc, caddr_t addr, uint_t len); static int fd_unit_is_open(struct fdunit *); static void fdunpacklabel(struct packed_label *, struct dk_label *); static int fd_unbind_handle(struct fdctlr *); static void fdwatch(void *); static void set_rotational_speed(struct fdctlr *, int); static int fd_get_media_info(struct fdunit *un, caddr_t buf, int flag); static int fd_pm_lower_power(struct fdctlr *fdc); static int fd_pm_raise_power(struct fdctlr *fdc); static void create_pm_components(dev_info_t *dip); static void set_data_count_register(struct fdctlr *fdc, uint32_t count); static uint32_t get_data_count_register(struct fdctlr *fdc); static void reset_dma_controller(struct fdctlr *fdc); static void set_data_address_register(struct fdctlr *fdc, uint32_t address); static uint32_t get_dma_control_register(struct fdctlr *fdc); static void set_dma_mode(struct fdctlr *fdc, int val); static void set_dma_control_register(struct fdctlr *fdc, uint32_t val); static void release_sb_dma(struct fdctlr *fdc); /* * External functions */ extern uint_t fd_intr(caddr_t); /* defined in fd_asm.s */ extern uint_t fd_fastintr(void); /* defined in fd_asm.s */ extern void set_auxioreg(); extern void call_debug(); /* * The following macro checks whether the device in a SUSPENDED state. * As per WDD guide lines the I/O requests to a suspended device should * be blocked until the device is resumed. * Here we cv_wait on c_suspend_cv, and there is a cv_broadcast() in * DDI_RESUME to wake up this thread. * * NOTE: This code is not tested because the kernel threads are suspended * before the device is suspended. So there can not be any I/O requests on * a suspended device until the cpr implementation changes.. */ #define CHECK_AND_WAIT_FD_STATE_SUSPENDED(fdc) \ {\ while (fdc->c_un->un_state == FD_STATE_SUSPENDED) {\ cv_wait(&fdc->c_suspend_cv, \ &fdc->c_lolock);\ }\ } /* * bss (uninitialized data) */ struct fdctlr *fdctlrs; /* linked list of controllers */ /* * initialized data */ static int fd_check_media_time = 5000000; /* 5 second state check */ static int fd_pollable = 0; static uchar_t rwretry = 10; static uchar_t skretry = 5; /* This variable allows the dynamic change of the burst size */ static int fd_burstsize = DCSR_BURST_0 | DCSR_BURST_1; static struct driver_minor_data { char *name; int minor; int type; } fd_minor [] = { { "a", 0, S_IFBLK}, { "b", 1, S_IFBLK}, { "c", 2, S_IFBLK}, { "a,raw", 0, S_IFCHR}, { "b,raw", 1, S_IFCHR}, { "c,raw", 2, S_IFCHR}, {0} }; /* * If the interrupt handler is invoked and no controllers expect an * interrupt, the kernel panics. The following message is printed out. */ char *panic_msg = "fd_intr: unexpected interrupt\n"; /* * Specify/Configure cmd parameters */ static uchar_t fdspec[2] = { 0xc2, 0x33 }; /* "specify" parameters */ static uchar_t fdconf[3] = { 0x64, 0x58, 0x00 }; /* "configure" parameters */ /* When DMA is used, set the ND bit to 0 */ #define SPEC_DMA_MODE 0x32 /* * default characteristics */ static struct fd_char fdtypes[] = { { /* struct fd_char fdchar_1.7MB density */ 0, /* medium */ 500, /* transfer rate */ 80, /* number of cylinders */ 2, /* number of heads */ 512, /* sector size */ 21, /* sectors per track */ -1, /* (NA) # steps per data track */ }, { /* struct fd_char fdchar_highdens */ 0, /* medium */ 500, /* transfer rate */ 80, /* number of cylinders */ 2, /* number of heads */ 512, /* sector size */ 18, /* sectors per track */ -1, /* (NA) # steps per data track */ }, { /* struct fd_char fdchar_meddens */ 1, /* medium */ 500, /* transfer rate */ 77, /* number of cylinders */ 2, /* number of heads */ 1024, /* sector size */ 8, /* sectors per track */ -1, /* (NA) # steps per data track */ }, { /* struct fd_char fdchar_lowdens */ 0, /* medium */ 250, /* transfer rate */ 80, /* number of cylinders */ 2, /* number of heads */ 512, /* sector size */ 9, /* sectors per track */ -1, /* (NA) # steps per data track */ } }; static int nfdtypes = sizeof (fdtypes) / sizeof (fdtypes[0]); /* * Default Label & partition maps */ static struct packed_label fdlbl_high_21 = { { "3.5\" floppy cyl 80 alt 0 hd 2 sec 21" }, 300, /* rotations per minute */ 80, /* # physical cylinders */ 0, /* alternates per cylinder */ 1, /* interleave factor */ 80, /* # of data cylinders */ 0, /* # of alternate cylinders */ 2, /* # of heads in this partition */ 21, /* # of 512 byte sectors per track */ { { 0, 79 * 2 * 21 }, /* part 0 - all but last cyl */ { 79, 1 * 2 * 21 }, /* part 1 - just the last cyl */ { 0, 80 * 2 * 21 }, /* part 2 - "the whole thing" */ }, { 0, /* version */ "", /* volume label */ 3, /* no. of partitions */ { 0 }, /* partition hdrs, sec 2 */ { 0 }, /* mboot info. unsupported */ VTOC_SANE, /* verify vtoc sanity */ { 0 }, /* reserved space */ 0, /* timestamp */ }, }; static struct packed_label fdlbl_high_80 = { { "3.5\" floppy cyl 80 alt 0 hd 2 sec 18" }, 300, /* rotations per minute */ 80, /* # physical cylinders */ 0, /* alternates per cylinder */ 1, /* interleave factor */ 80, /* # of data cylinders */ 0, /* # of alternate cylinders */ 2, /* # of heads in this partition */ 18, /* # of 512 byte sectors per track */ { { 0, 79 * 2 * 18 }, /* part 0 - all but last cyl */ { 79, 1 * 2 * 18 }, /* part 1 - just the last cyl */ { 0, 80 * 2 * 18 }, /* part 2 - "the whole thing" */ }, { 0, /* version */ "", /* volume label */ 3, /* no. of partitions */ { 0 }, /* partition hdrs, sec 2 */ { 0 }, /* mboot info. unsupported */ VTOC_SANE, /* verify vtoc sanity */ { 0 }, /* reserved space */ 0, /* timestamp */ }, }; /* * A medium density diskette has 1024 byte sectors. The dk_label structure * assumes a sector is DEVBSIZE (512) bytes. */ static struct packed_label fdlbl_medium_80 = { { "3.5\" floppy cyl 77 alt 0 hd 2 sec 8" }, 360, /* rotations per minute */ 77, /* # physical cylinders */ 0, /* alternates per cylinder */ 1, /* interleave factor */ 77, /* # of data cylinders */ 0, /* # of alternate cylinders */ 2, /* # of heads in this partition */ 16, /* # of 512 byte sectors per track */ { { 0, 76 * 2 * 8 * 2 }, /* part 0 - all but last cyl */ { 76, 1 * 2 * 8 * 2 }, /* part 1 - just the last cyl */ { 0, 77 * 2 * 8 * 2 }, /* part 2 - "the whole thing" */ }, { 0, /* version */ "", /* volume label */ 3, /* no. of partitions */ { 0 }, /* partition hdrs, sec 2 */ { 0 }, /* mboot info. unsupported */ VTOC_SANE, /* verify vtoc sanity */ { 0 }, /* reserved space */ 0, /* timestamp */ }, }; static struct packed_label fdlbl_low_80 = { { "3.5\" floppy cyl 80 alt 0 hd 2 sec 9" }, 300, /* rotations per minute */ 80, /* # physical cylinders */ 0, /* alternates per cylinder */ 1, /* interleave factor */ 80, /* # of data cylinders */ 0, /* # of alternate cylinders */ 2, /* # of heads in this partition */ 9, /* # of 512 byte sectors per track */ { { 0, 79 * 2 * 9 }, /* part 0 - all but last cyl */ { 79, 1 * 2 * 9 }, /* part 1 - just the last cyl */ { 0, 80 * 2 * 9 }, /* part 2 - "the whole thing" */ }, { 0, /* version */ "", /* volume label */ 3, /* no. of partitions */ { 0 }, /* partition hdrs, sec 2 */ { 0 }, /* mboot info. unsupported */ VTOC_SANE, /* verify vtoc sanity */ { 0 }, /* reserved space */ 0, /* timestamp */ }, }; static struct fdcmdinfo { char *cmdname; /* command name */ uchar_t ncmdbytes; /* number of bytes of command */ uchar_t nrsltbytes; /* number of bytes in result */ uchar_t cmdtype; /* characteristics */ } fdcmds[] = { "", 0, 0, 0, /* - */ "", 0, 0, 0, /* - */ "read_track", 9, 7, 1, /* 2 */ "specify", 3, 0, 3, /* 3 */ "sense_drv_status", 2, 1, 3, /* 4 */ "write", 9, 7, 1, /* 5 */ "read", 9, 7, 1, /* 6 */ "recalibrate", 2, 0, 2, /* 7 */ "sense_int_status", 1, 2, 3, /* 8 */ "write_del", 9, 7, 1, /* 9 */ "read_id", 2, 7, 2, /* A */ "motor_on/off", 1, 0, 4, /* B */ "read_del", 9, 7, 1, /* C */ "format_track", 10, 7, 1, /* D */ "dump_reg", 1, 10, 4, /* E */ "seek", 3, 0, 2, /* F */ "", 0, 0, 0, /* - */ "", 0, 0, 0, /* - */ "", 0, 0, 0, /* - */ "configure", 4, 0, 4, /* 13 */ /* relative seek */ }; static struct cb_ops fd_cb_ops = { fd_open, /* open */ fd_close, /* close */ fd_strategy, /* strategy */ nodev, /* print */ nodev, /* dump */ fd_read, /* read */ fd_write, /* write */ fd_ioctl, /* ioctl */ nodev, /* devmap */ nodev, /* mmap */ nodev, /* segmap */ nochpoll, /* poll */ fd_prop_op, /* cb_prop_op */ 0, /* streamtab */ D_NEW | D_MP /* Driver compatibility flag */ }; static struct dev_ops fd_ops = { DEVO_REV, /* devo_rev, */ 0, /* refcnt */ fd_info, /* info */ nulldev, /* identify */ nulldev, /* probe */ fd_attach, /* attach */ fd_detach, /* detach */ nodev, /* reset */ &fd_cb_ops, /* driver operations */ (struct bus_ops *)0, /* bus operations */ fd_power /* power */ }; /* * error handling * * for debugging, set rwretry and skretry = 1 * set fderrlevel to 1 * set fderrmask to 224 or 100644 * * after debug set rwretry to 10, skretry to 5, and fderrlevel to 3 * set fderrmask to FDEM_ALL * remove the define FD_DEBUG * */ static unsigned int fderrmask = (unsigned int)FDEM_ALL; static int fderrlevel = 3; static int tosec = 16; /* long timeouts for sundiag for now */ /* * loadable module support */ #include extern struct mod_ops mod_driverops; static struct modldrv modldrv = { &mod_driverops, /* Type of module. driver here */ "Floppy Driver v%I%", /* Name of the module. */ &fd_ops, /* Driver ops vector */ }; static struct modlinkage modlinkage = { MODREV_1, &modldrv, NULL }; int _init(void) { return (mod_install(&modlinkage)); } int _info(struct modinfo *modinfop) { return (mod_info(&modlinkage, modinfop)); } int _fini(void) { int e; if ((e = mod_remove(&modlinkage)) != 0) return (e); /* ddi_soft_state_fini() */ return (0); } /* ARGSUSED */ static int fd_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) { struct fdctlr *fdc; struct driver_minor_data *dmdp; int instance = ddi_get_instance(dip); int hard_intr_set = 0; FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fd_attach: start\n")); switch (cmd) { case DDI_ATTACH: break; case DDI_RESUME: if (!(fdc = fd_getctlr(instance << FDINSTSHIFT))) { return (DDI_FAILURE); } quiesce_fd_interrupt(fdc); if (fdc->c_fdtype & FDCTYPE_SB) if (ddi_add_intr(dip, 0, &fdc->c_block, 0, fdintr_dma, (caddr_t)0) != DDI_SUCCESS) { return (DDI_FAILURE); } (void) pm_raise_power(dip, 0, PM_LEVEL_ON); mutex_enter(&fdc->c_lolock); /* * Wake up any thread blocked due to I/O requests * while the device was suspended. */ cv_broadcast(&fdc->c_suspend_cv); mutex_exit(&fdc->c_lolock); return (DDI_SUCCESS); default: return (DDI_FAILURE); } /* * Check for the pollable property * A pollable floppy drive currently only exists on the * Sparcstation Voyager. This drive does not need to * be turned on in order to sense whether or not a diskette * is present. */ if (ddi_getprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, FD_POLLABLE_PROP, 0)) fd_pollable = 1; fdc = kmem_zalloc(sizeof (*fdc), KM_SLEEP); fdc->c_dip = dip; fdc->c_next = fdctlrs; fdctlrs = fdc; /* Determine which type of controller is present and initialize it */ if (fd_attach_det_ctlr(dip, fdc) == DDI_FAILURE) { fd_cleanup(dip, fdc, hard_intr_set, 0); return (DDI_FAILURE); } /* Finish mapping the device registers & setting up structures */ if (fd_attach_map_regs(dip, fdc) == DDI_FAILURE) { fd_cleanup(dip, fdc, hard_intr_set, 0); return (DDI_FAILURE); } /* * Initialize the DMA limit structures if it's being used. */ if (fdc->c_fdtype & FDCTYPE_DMA) { fdc->c_fd_dma_lim.dma_attr_version = DMA_ATTR_V0; fdc->c_fd_dma_lim.dma_attr_addr_lo = 0x00000000ull; fdc->c_fd_dma_lim.dma_attr_addr_hi = 0xfffffffeull; fdc->c_fd_dma_lim.dma_attr_count_max = 0xffffff; if (fdc->c_fdtype & FDCTYPE_SB) { fdc->c_fd_dma_lim.dma_attr_align = FD_SB_DMA_ALIGN; } else { fdc->c_fd_dma_lim.dma_attr_align = 1; } fdc->c_fd_dma_lim.dma_attr_burstsizes = 0x0; fdc->c_fd_dma_lim.dma_attr_minxfer = 1; fdc->c_fd_dma_lim.dma_attr_maxxfer = 0xffff; fdc->c_fd_dma_lim.dma_attr_seg = 0xffff; fdc->c_fd_dma_lim.dma_attr_sgllen = 1; fdc->c_fd_dma_lim.dma_attr_granular = 512; if (ddi_dma_alloc_handle(dip, &fdc->c_fd_dma_lim, DDI_DMA_DONTWAIT, 0, &fdc->c_dmahandle) != DDI_SUCCESS) { fd_cleanup(dip, fdc, hard_intr_set, 0); return (DDI_FAILURE); } if (fdc->c_fdtype & FDCTYPE_SB) { ddi_device_acc_attr_t dev_attr; size_t rlen; dev_attr.devacc_attr_version = DDI_DEVICE_ATTR_V0; dev_attr.devacc_attr_endian_flags = DDI_NEVERSWAP_ACC; dev_attr.devacc_attr_dataorder = DDI_STRICTORDER_ACC; if (ddi_dma_mem_alloc(fdc->c_dmahandle, (size_t)(32*1024), &dev_attr, DDI_DMA_CONSISTENT, DDI_DMA_SLEEP, NULL, (caddr_t *)&fdc->dma_buf, &rlen, &fdc->c_dma_buf_handle) != DDI_SUCCESS) { fd_cleanup(dip, fdc, hard_intr_set, 0); return (DDI_FAILURE); } } } /* Register the interrupts */ if (fd_attach_register_interrupts(dip, fdc, &hard_intr_set) == DDI_FAILURE) { fd_cleanup(dip, fdc, hard_intr_set, 0); FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fd_attach: registering interrupts failed\n")); return (DDI_FAILURE); } /* * set initial controller/drive/disk "characteristics/geometry" * * NOTE: The driver only supports one floppy drive. The hardware * only supports one drive because there is only one auxio register * for one drive. */ fdc->c_un = kmem_zalloc(sizeof (struct fdunit), KM_SLEEP); fdc->c_un->un_chars = kmem_alloc(sizeof (struct fd_char), KM_SLEEP); fdc->c_un->un_iostat = kstat_create("fd", 0, "fd0", "disk", KSTAT_TYPE_IO, 1, KSTAT_FLAG_PERSISTENT); if (fdc->c_un->un_iostat) { fdc->c_un->un_iostat->ks_lock = &fdc->c_lolock; kstat_install(fdc->c_un->un_iostat); } fdc->c_un->un_drive = kmem_zalloc(sizeof (struct fd_drive), KM_SLEEP); /* check for the manual eject property */ if (ddi_getprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, FD_MANUAL_EJECT, 0)) { fdc->c_un->un_drive->fdd_ejectable = 0; } else { /* an absence of the property indicates auto eject */ fdc->c_un->un_drive->fdd_ejectable = -1; } FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fd_attach: ejectable? %d\n", fdc->c_un->un_drive->fdd_ejectable)); /* * Check for the drive id. If the drive id property doesn't exist * then the drive id is set to 0 */ fdc->c_un->un_unit_no = ddi_getprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, FD_UNIT, 0); if (fdc->c_fdtype & FDCTYPE_SB) { fdc->sb_dma_channel = ddi_getprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS, "dma-channel", 0); } FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fd_attach: unit %d\n", fdc->c_un->un_unit_no)); /* Initially set the characteristics to high density */ fdc->c_un->un_curfdtype = 1; *fdc->c_un->un_chars = fdtypes[fdc->c_un->un_curfdtype]; fdunpacklabel(&fdlbl_high_80, &fdc->c_un->un_label); /* Make sure drive is present */ if (fd_attach_check_drive(fdc) == DDI_FAILURE) { fd_cleanup(dip, fdc, hard_intr_set, 1); return (DDI_FAILURE); } for (dmdp = fd_minor; dmdp->name != NULL; dmdp++) { if (ddi_create_minor_node(dip, dmdp->name, dmdp->type, (instance << FDINSTSHIFT) | dmdp->minor, DDI_NT_FD, 0) == DDI_FAILURE) { fd_cleanup(dip, fdc, hard_intr_set, 1); return (DDI_FAILURE); } } create_pm_components(dip); /* * Add a zero-length attribute to tell the world we support * kernel ioctls (for layered drivers) */ (void) ddi_prop_create(DDI_DEV_T_NONE, dip, DDI_PROP_CANSLEEP, DDI_KERNEL_IOCTL, NULL, 0); ddi_report_dev(dip); FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "attached 0x%x\n", ddi_get_instance(dip))); return (DDI_SUCCESS); } /* * Finish mapping the registers and initializing structures */ static int fd_attach_map_regs(dev_info_t *dip, struct fdctlr *fdc) { ddi_device_acc_attr_t attr; attr.devacc_attr_version = DDI_DEVICE_ATTR_V0; attr.devacc_attr_endian_flags = DDI_STRUCTURE_LE_ACC; attr.devacc_attr_dataorder = DDI_STRICTORDER_ACC; /* Map the DMA registers of the platform supports DMA */ if (fdc->c_fdtype & FDCTYPE_SB) { if (ddi_regs_map_setup(dip, 1, (caddr_t *)&fdc->c_dma_regs, 0, sizeof (struct sb_dma_reg), &attr, &fdc->c_handlep_dma)) { return (DDI_FAILURE); } } else if (fdc->c_fdtype & FDCTYPE_CHEERIO) { if (ddi_regs_map_setup(dip, 1, (caddr_t *)&fdc->c_dma_regs, 0, sizeof (struct cheerio_dma_reg), &attr, &fdc->c_handlep_dma)) { return (DDI_FAILURE); } } /* Reset the DMA engine and enable floppy interrupts */ reset_dma_controller(fdc); set_dma_control_register(fdc, DCSR_INIT_BITS); /* Finish initializing structures associated with the device regs */ switch (fdc->c_fdtype & FDCTYPE_CTRLMASK) { case FDCTYPE_82077: FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "type is 82077\n")); /* * Initialize addrs of key registers */ fdc->c_control = (uchar_t *)&fdc->c_reg->fdc_82077_reg.fdc_control; fdc->c_fifo = (uchar_t *)&fdc->c_reg->fdc_82077_reg.fdc_fifo; fdc->c_dor = (uchar_t *)&fdc->c_reg->fdc_82077_reg.fdc_dor; fdc->c_dir = (uchar_t *)&fdc->c_reg->fdc_82077_reg.fdc_dir; FDERRPRINT(FDEP_L1, FDEM_ATTA, ((int)C, (char *)"fdattach: msr/dsr at %p\n", (void *)fdc->c_control)); /* * The 82077 doesn't use the first configuration parameter * so let's adjust that while we know we're an 82077. */ fdconf[0] = 0; quiesce_fd_interrupt(fdc); break; default: break; } return (0); } /* * Determine which type of floppy controller is present and * initialize the registers accordingly */ static int fd_attach_det_ctlr(dev_info_t *dip, struct fdctlr *fdc) { ddi_device_acc_attr_t attr; attr.devacc_attr_version = DDI_DEVICE_ATTR_V0; /* DDI_NEVERSWAP_ACC since the controller has a byte interface. */ attr.devacc_attr_endian_flags = DDI_STRUCTURE_LE_ACC; attr.devacc_attr_dataorder = DDI_STRICTORDER_ACC; FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdattach_det_cltr: start \n")); /* * First, map in the controller's registers * The controller has an 8-bit interface, so byte * swapping isn't needed */ if (ddi_regs_map_setup(dip, 0, (caddr_t *)&fdc->c_reg, 0, sizeof (union fdcreg), &attr, &fdc->c_handlep_cont)) { return (DDI_FAILURE); } FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdattach_det_cltr: mapped floppy regs\n")); /* * Set platform specific characteristics based on the device-tree * node name. */ if (strcmp(ddi_get_name(dip), "SUNW,fdtwo") == 0) { fdc->c_fdtype |= FDCTYPE_SLAVIO; fdc->c_fdtype |= FDCTYPE_82077; fdc->c_auxiova = fd_getauxiova(dip); fdc->c_auxiodata = (uchar_t)(AUX_MBO4M|AUX_TC4M); fdc->c_auxiodata2 = (uchar_t)AUX_TC4M; FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdattach: slavio will be used!\n")); /* * Check the binding name to identify whether it is a South bridge based * system or not. */ } else if (strcmp(ddi_get_name(dip), "pnpALI,1533,0") == 0) { fdc->c_fdtype |= FDCTYPE_SB; fdc->c_fdtype |= FDCTYPE_82077; fdc->c_fdtype |= FDCTYPE_DMA; FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdattach: southbridge will be used!\n")); /* * The driver assumes high density characteristics until * the diskette is looked at. */ fdc->c_fdtype |= FDCTYPE_DMA8237; FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fd_attach: DMA used\n")); } else if (strcmp(ddi_get_name(dip), "fdthree") == 0) { fdc->c_fdtype |= FDCTYPE_CHEERIO; fdc->c_fdtype |= FDCTYPE_82077; FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdattach: cheerio will be used!\n")); /* * The cheerio auxio register should be memory mapped. The * auxio register on other platforms is shared and mapped * elsewhere in the kernel */ if (ddi_regs_map_setup(dip, 2, (caddr_t *)&fdc->c_auxio_reg, 0, sizeof (uint_t), &attr, &fdc->c_handlep_aux)) { return (DDI_FAILURE); } /* * The driver assumes high density characteristics until * the diskette is looked at. */ Set_auxio(fdc, AUX_HIGH_DENSITY); FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdattach: auxio register 0x%x\n", *fdc->c_auxio_reg)); fdc->c_fdtype |= FDCTYPE_DMA; FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fd_attach: DMA used\n")); } if (fdc->c_fdtype == 0) { FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdattach: no controller!\n")); return (DDI_FAILURE); } else { return (0); } } /* * Register the floppy interrupts */ static int fd_attach_register_interrupts(dev_info_t *dip, struct fdctlr *fdc, int *hard) { ddi_iblock_cookie_t iblock_cookie_soft; int status; /* * First call ddi_get_iblock_cookie() to retrieve the * the interrupt block cookie so that the mutexes may * be initialized before adding the interrupt. If the * mutexes are initialized after adding the interrupt, there * could be a race condition. */ if (ddi_get_iblock_cookie(dip, 0, &fdc->c_block) != DDI_SUCCESS) { FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdattach: ddi_get_iblock_cookie failed\n")); return (DDI_FAILURE); } /* Initialize high level mutex */ mutex_init(&fdc->c_hilock, NULL, MUTEX_DRIVER, fdc->c_block); /* * Try to register fast trap handler, if unable try standard * interrupt handler, else bad */ if (fdc->c_fdtype & FDCTYPE_DMA) { if (ddi_add_intr(dip, 0, &fdc->c_block, 0, fdintr_dma, (caddr_t)0) == DDI_SUCCESS) { FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdattach: standard intr\n")); /* * When DMA is used, the low level lock * is used in the hard interrupt handler. */ mutex_init(&fdc->c_lolock, NULL, MUTEX_DRIVER, fdc->c_block); *hard = 1; } else { FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdattach: can't add dma intr\n")); mutex_destroy(&fdc->c_hilock); return (DDI_FAILURE); } } else { /* * Platforms that don't support DMA have both hard * and soft interrupts. */ if (ddi_add_intr(dip, 0, &fdc->c_block, 0, fd_intr, (caddr_t)0) == DDI_SUCCESS) { FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdattach: standard intr\n")); *hard = 1; /* fast traps are not enabled */ fdc->c_fasttrap = 0; } else { FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdattach: can't add intr\n")); mutex_destroy(&fdc->c_hilock); return (DDI_FAILURE); } /* * Initialize the soft interrupt handler. First call * ddi_get_soft_iblock_cookie() so that the mutex may * be initialized before the handler is added. */ status = ddi_get_soft_iblock_cookie(dip, DDI_SOFTINT_LOW, &iblock_cookie_soft); if (status != DDI_SUCCESS) { mutex_destroy(&fdc->c_hilock); return (DDI_FAILURE); } /* * Initialize low level mutex which is used in the soft * interrupt handler */ mutex_init(&fdc->c_lolock, NULL, MUTEX_DRIVER, iblock_cookie_soft); if (ddi_add_softintr(dip, DDI_SOFTINT_LOW, &fdc->c_softid, NULL, NULL, fd_lointr, (caddr_t)fdc) != DDI_SUCCESS) { mutex_destroy(&fdc->c_hilock); mutex_destroy(&fdc->c_lolock); return (DDI_FAILURE); } } fdc->c_intrstat = kstat_create("fd", 0, "fdc0", "controller", KSTAT_TYPE_INTR, 1, KSTAT_FLAG_PERSISTENT); if (fdc->c_intrstat) { fdc->c_hiintct = &KIOIP->intrs[KSTAT_INTR_HARD]; kstat_install(fdc->c_intrstat); } /* condition variable to wait on while an io transaction occurs */ cv_init(&fdc->c_iocv, NULL, CV_DRIVER, NULL); /* condition variable for the csb */ cv_init(&fdc->c_csbcv, NULL, CV_DRIVER, NULL); /* condition variable for motor on waiting period */ cv_init(&fdc->c_motoncv, NULL, CV_DRIVER, NULL); /* semaphore to serialize opens and closes */ sema_init(&fdc->c_ocsem, 1, NULL, SEMA_DRIVER, NULL); /* condition variable to wait on suspended floppy controller. */ cv_init(&fdc->c_suspend_cv, NULL, CV_DRIVER, NULL); return (0); } /* * Make sure the drive is present * - acquires the low level lock */ static int fd_attach_check_drive(struct fdctlr *fdc) { int tmp_fderrlevel; int unit = fdc->c_un->un_unit_no; FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fd_attach_check_drive\n")); mutex_enter(&fdc->c_lolock); switch (fdc->c_fdtype & FDCTYPE_CTRLMASK) { /* insure that the eject line is reset */ case FDCTYPE_82077: /* * Everything but the motor enable, drive select, * and reset bits are turned off. These three * bits remain as they are. */ /* LINTED */ Set_dor(fdc, ~((MOTEN(unit))|DRVSEL|RESET), 0); FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdattach: Dor 0x%x\n", Dor(fdc))); drv_usecwait(5); if (unit == 0) { /* LINTED */ Set_dor(fdc, RESET|DRVSEL, 1); } else { /* LINTED */ Set_dor(fdc, DRVSEL, 0); /* LINTED */ Set_dor(fdc, RESET, 1); } drv_usecwait(5); FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdattach: Dor 0x%x\n", Dor(fdc))); if (!((fdc->c_fdtype & FDCTYPE_CHEERIO) || (fdc->c_fdtype & FDCTYPE_SB))) { set_auxioreg(AUX_TC4M, 0); } break; default: break; } fdgetcsb(fdc); if (fdreset(fdc) != 0) { mutex_exit(&fdc->c_lolock); return (DDI_FAILURE); } /* check for drive present */ tmp_fderrlevel = fderrlevel; fderrlevel = FDEP_LMAX; FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdattach: call fdrecalseek\n")); /* Make sure the drive is present */ if (fdrecalseek(fdc, unit, -1, 0) != 0) { timeout_id_t timeid = fdc->c_mtimeid; fderrlevel = tmp_fderrlevel; fdc->c_mtimeid = 0; mutex_exit(&fdc->c_lolock); /* Do not hold the mutex over the call to untimeout */ if (timeid) { (void) untimeout(timeid); } FDERRPRINT(FDEP_L2, FDEM_ATTA, (C, "fd_attach: no drive?\n")); return (DDI_FAILURE); } fderrlevel = tmp_fderrlevel; fdselect(fdc, unit, 0); /* deselect drive zero (used in fdreset) */ fdretcsb(fdc); mutex_exit(&fdc->c_lolock); return (0); } /* * Clean up routine used by fd_detach and fd_attach * * Note: if the soft id is non-zero, then ddi_add_softintr() completed * successfully. I can not make the same assumption about the iblock_cookie * for the high level interrupt handler. So, the hard parameter indicates * whether or not a high level interrupt handler has been added. * * If the locks parameter is nonzero, then all mutexes, semaphores and * condition variables will be destroyed. * * Does not assume the low level mutex is held. * */ static void fd_cleanup(dev_info_t *dip, struct fdctlr *fdc, int hard, int locks) { FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fd_cleanup instance: %d ctlr: 0x%x\n", ddi_get_instance(dip), (int)fdc)); if (fdc == NULL) { return; } /* * Remove interrupt handlers first before anything else * is deallocated. */ /* Remove hard interrupt if one is registered */ if (hard) { ddi_remove_intr(dip, (uint_t)0, fdc->c_block); } /* Remove soft interrupt if one is registered */ if (fdc->c_softid != NULL) ddi_remove_softintr(fdc->c_softid); /* Remove timers */ if (fdc->c_fdtype & FDCTYPE_82077) { if (fdc->c_mtimeid) (void) untimeout(fdc->c_mtimeid); /* * Need to turn off motor (includes select/LED for South Bridge * chipset) just in case it was on when timer was removed */ fdmotoff(fdc); } if (fdc->c_timeid) (void) untimeout(fdc->c_timeid); /* Remove memory handles */ if (fdc->c_handlep_cont) ddi_regs_map_free(&fdc->c_handlep_cont); if (fdc->c_handlep_aux) ddi_regs_map_free(&fdc->c_handlep_aux); if (fdc->c_handlep_dma) ddi_regs_map_free(&fdc->c_handlep_dma); if (fdc->c_dma_buf_handle != NULL) ddi_dma_mem_free(&fdc->c_dma_buf_handle); if (fdc->c_dmahandle != NULL) ddi_dma_free_handle(&fdc->c_dmahandle); /* Remove all minor nodes */ ddi_remove_minor_node(dip, NULL); /* Remove unit structure if one exists */ if (fdc->c_un != (struct fdunit *)NULL) { ASSERT(!mutex_owned(&fdc->c_lolock)); if (fdc->c_un->un_iostat) kstat_delete(fdc->c_un->un_iostat); fdc->c_un->un_iostat = NULL; if (fdc->c_un->un_chars) kmem_free(fdc->c_un->un_chars, sizeof (struct fd_char)); if (fdc->c_un->un_drive) kmem_free(fdc->c_un->un_drive, sizeof (struct fd_drive)); kmem_free((caddr_t)fdc->c_un, sizeof (struct fdunit)); } if (fdc->c_intrstat) { FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fd_cleanup: delete intrstat\n")); kstat_delete(fdc->c_intrstat); } fdc->c_intrstat = NULL; if (locks) { cv_destroy(&fdc->c_iocv); cv_destroy(&fdc->c_csbcv); cv_destroy(&fdc->c_motoncv); cv_destroy(&fdc->c_suspend_cv); sema_destroy(&fdc->c_ocsem); mutex_destroy(&fdc->c_hilock); mutex_destroy(&fdc->c_lolock); } fdctlrs = fdc->c_next; kmem_free(fdc, sizeof (*fdc)); } static int fd_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) { int instance = ddi_get_instance(dip); struct fdctlr *fdc = fd_getctlr(instance << FDINSTSHIFT); timeout_id_t c_mtimeid; FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fd_detach\n")); switch (cmd) { case DDI_DETACH: /* * The hard parameter is set to 1. If detach is called, then * attach must have passed meaning that the high level * interrupt handler was successfully added. * Similarly, the locks parameter is also set to 1. */ fd_cleanup(dip, fdc, 1, 1); ddi_prop_remove_all(dip); return (DDI_SUCCESS); case DDI_SUSPEND: if (!fdc) return (DDI_FAILURE); mutex_enter(&fdc->c_lolock); fdgetcsb(fdc); /* Wait for I/O to finish */ c_mtimeid = fdc->c_mtimeid; fdretcsb(fdc); mutex_exit(&fdc->c_lolock); (void) untimeout(c_mtimeid); /* * After suspend, the system could be powered off. * When it is later powered on the southbridge floppy * controller will tristate the interrupt line causing * continuous dma interrupts. * To avoid getting continuous fd interrupts we will remove the * dma interrupt handler installed. We will re-install the * handler when we RESUME. */ if (fdc->c_fdtype & FDCTYPE_SB) ddi_remove_intr(dip, 0, fdc->c_block); fdc->c_un->un_state = FD_STATE_SUSPENDED; return (DDI_SUCCESS); default: return (DDI_FAILURE); } } /* ARGSUSED */ static int fd_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result) { register struct fdctlr *fdc; register int error; switch (infocmd) { case DDI_INFO_DEVT2DEVINFO: if ((fdc = fd_getctlr((dev_t)arg)) == NULL) { error = DDI_FAILURE; } else { *result = fdc->c_dip; error = DDI_SUCCESS; } break; case DDI_INFO_DEVT2INSTANCE: *result = 0; error = DDI_SUCCESS; break; default: error = DDI_FAILURE; } return (error); } /* * property operation routine. return the number of blocks for the partition * in question or forward the request to the property facilities. */ static int fd_prop_op(dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op, int mod_flags, char *name, caddr_t valuep, int *lengthp) { struct fdunit *un; struct fdctlr *fdc; uint64_t nblocks64; /* * Our dynamic properties are all device specific and size oriented. * Requests issued under conditions where size is valid are passed * to ddi_prop_op_nblocks with the size information, otherwise the * request is passed to ddi_prop_op. */ if (dev == DDI_DEV_T_ANY) { pass: return (ddi_prop_op(dev, dip, prop_op, mod_flags, name, valuep, lengthp)); } else { fdc = fd_getctlr(dev); if (fdc == NULL) goto pass; /* we have size if diskette opened and label read */ un = fdc->c_un; if ((un == NULL) || !fd_unit_is_open(fdc->c_un)) goto pass; /* get nblocks value */ nblocks64 = (ulong_t) un->un_label.dkl_map[FDPARTITION(dev)].dkl_nblk; return (ddi_prop_op_nblocks(dev, dip, prop_op, mod_flags, name, valuep, lengthp, nblocks64)); } } /* ARGSUSED3 */ static int fd_open(dev_t *devp, int flag, int otyp, cred_t *cred_p) { dev_t dev; int part; struct fdctlr *fdc; struct fdunit *un; struct dk_map32 *dkm; uchar_t pbit; int err, part_is_open; int unit; dev = *devp; fdc = fd_getctlr(dev); if ((fdc == NULL) || ((un = fdc->c_un) == NULL)) { return (ENXIO); } unit = fdc->c_un->un_unit_no; /* * Serialize opens/closes */ sema_p(&fdc->c_ocsem); /* check partition */ part = FDPARTITION(dev); pbit = 1 << part; dkm = &un->un_label.dkl_map[part]; if (dkm->dkl_nblk == 0) { sema_v(&fdc->c_ocsem); return (ENXIO); } FDERRPRINT(FDEP_L1, FDEM_OPEN, (C, "fdopen: ctlr %d unit %d part %d\n", ddi_get_instance(fdc->c_dip), unit, part)); FDERRPRINT(FDEP_L1, FDEM_OPEN, (C, "fdopen: flag 0x%x", flag)); /* * Insure that drive is present with a recalibrate on first open. */ (void) pm_busy_component(fdc->c_dip, 0); mutex_enter(&fdc->c_lolock); CHECK_AND_WAIT_FD_STATE_SUSPENDED(fdc); if (fdc->c_un->un_state == FD_STATE_STOPPED) { mutex_exit(&fdc->c_lolock); if ((pm_raise_power(fdc->c_dip, 0, PM_LEVEL_ON)) != DDI_SUCCESS) { FDERRPRINT(FDEP_L1, FDEM_PWR, (C, "Power change \ failed. \n")); sema_v(&fdc->c_ocsem); (void) pm_idle_component(fdc->c_dip, 0); return (EIO); } mutex_enter(&fdc->c_lolock); } if (fd_unit_is_open(un) == 0) { fdgetcsb(fdc); /* * no check changed! */ err = fdrecalseek(fdc, unit, -1, 0); fdretcsb(fdc); if (err) { FDERRPRINT(FDEP_L3, FDEM_OPEN, (C, "fd%d: drive not ready\n", 0)); /* deselect drv on last close */ fdselect(fdc, unit, 0); mutex_exit(&fdc->c_lolock); sema_v(&fdc->c_ocsem); (void) pm_idle_component(fdc->c_dip, 0); return (EIO); } } /* * Check for previous exclusive open, or trying to exclusive open */ if (otyp == OTYP_LYR) { part_is_open = (un->un_lyropen[part] != 0); } else { part_is_open = fd_part_is_open(un, part); } if ((un->un_exclmask & pbit) || ((flag & FEXCL) && part_is_open)) { mutex_exit(&fdc->c_lolock); sema_v(&fdc->c_ocsem); FDERRPRINT(FDEP_L2, FDEM_OPEN, (C, "fd:just return\n")); (void) pm_idle_component(fdc->c_dip, 0); return (EBUSY); } /* don't attempt access, just return successfully */ if (flag & (FNDELAY | FNONBLOCK)) { FDERRPRINT(FDEP_L2, FDEM_OPEN, (C, "fd: return busy..\n")); goto out; } fdc->c_csb.csb_unit = (uchar_t)unit; if (fdgetlabel(fdc, unit)) { /* didn't find label (couldn't read anything) */ FDERRPRINT(FDEP_L3, FDEM_OPEN, (C, "fd%d: unformatted diskette or no diskette in the drive\n", 0)); if (fd_unit_is_open(un) == 0) { /* deselect drv on last close */ fdselect(fdc, unit, 0); } mutex_exit(&fdc->c_lolock); sema_v(&fdc->c_ocsem); (void) pm_idle_component(fdc->c_dip, 0); return (EIO); } /* * if opening for writing, check write protect on diskette */ if (flag & FWRITE) { fdgetcsb(fdc); err = fdsensedrv(fdc, unit) & WP_SR3; fdretcsb(fdc); if (err) { if (fd_unit_is_open(un) == 0) fdselect(fdc, unit, 0); mutex_exit(&fdc->c_lolock); sema_v(&fdc->c_ocsem); (void) pm_idle_component(fdc->c_dip, 0); return (EROFS); } } out: /* * mark open as having succeeded */ if (flag & FEXCL) { un->un_exclmask |= pbit; } if (otyp == OTYP_LYR) { un->un_lyropen[part]++; } else { un->un_regopen[otyp] |= pbit; } mutex_exit(&fdc->c_lolock); sema_v(&fdc->c_ocsem); (void) pm_idle_component(fdc->c_dip, 0); return (0); } /* * fd_part_is_open * return 1 if the partition is open * return 0 otherwise */ static int fd_part_is_open(struct fdunit *un, int part) { int i; for (i = 0; i < OTYPCNT - 1; i++) if (un->un_regopen[i] & (1 << part)) return (1); return (0); } /* ARGSUSED */ static int fd_close(dev_t dev, int flag, int otyp, cred_t *cred_p) { int unit, part_is_closed, part; register struct fdctlr *fdc; register struct fdunit *un; fdc = fd_getctlr(dev); if (!fdc || !(un = fdc->c_un)) return (ENXIO); unit = fdc->c_un->un_unit_no; FDERRPRINT(FDEP_L1, FDEM_CLOS, (C, "fd_close\n")); part = FDPARTITION(dev); sema_p(&fdc->c_ocsem); mutex_enter(&fdc->c_lolock); if (otyp == OTYP_LYR) { un->un_lyropen[part]--; part_is_closed = (un->un_lyropen[part] == 0); } else { un->un_regopen[otyp] &= ~(1<un_exclmask &= ~(1<un_flags &= ~FDUNIT_CHANGED; } mutex_exit(&fdc->c_lolock); sema_v(&fdc->c_ocsem); return (0); } /* * fd_strategy * checks operation, hangs buf struct off fdctlr, calls fdstart * if not already busy. Note that if we call start, then the operation * will already be done on return (start sleeps). */ static int fd_strategy(register struct buf *bp) { struct fdctlr *fdc; struct fdunit *un; uint_t phys_blkno; struct dk_map32 *dkm; FDERRPRINT(FDEP_L1, FDEM_STRA, (C, "fd_strategy: bp = 0x%p, dev = 0x%lx\n", (void *)bp, bp->b_edev)); FDERRPRINT(FDEP_L1, FDEM_STRA, (C, "b_blkno=%x b_flags=%x b_count=%x\n", (int)bp->b_blkno, bp->b_flags, (int)bp->b_bcount)); fdc = fd_getctlr(bp->b_edev); un = fdc->c_un; dkm = &un->un_label.dkl_map[FDPARTITION(bp->b_edev)]; /* * If it's medium density and the block no. isn't a multiple * of 1K, then return an error. */ if (un->un_chars->fdc_medium) { phys_blkno = (uint_t)bp->b_blkno >> 1; if (bp->b_blkno & 1) { FDERRPRINT(FDEP_L3, FDEM_STRA, (C, "b_blkno=0x%lx is not 1k aligned\n", (long)bp->b_blkno)); bp->b_error = EINVAL; bp->b_resid = bp->b_bcount; bp->b_flags |= B_ERROR; biodone(bp); return (0); } } else { phys_blkno = (uint_t)bp->b_blkno; } /* If the block number is past the end, return an error */ if ((phys_blkno > dkm->dkl_nblk)) { FDERRPRINT(FDEP_L3, FDEM_STRA, (C, "fd%d: block %ld is past the end! (nblk=%d)\n", 0, (long)bp->b_blkno, dkm->dkl_nblk)); bp->b_error = ENOSPC; bp->b_resid = bp->b_bcount; bp->b_flags |= B_ERROR; biodone(bp); return (0); } /* if at end of file, skip out now */ if (phys_blkno == dkm->dkl_nblk) { FDERRPRINT(FDEP_L1, FDEM_STRA, (C, "b_blkno is at the end!\n")); if ((bp->b_flags & B_READ) == 0) { /* a write needs to get an error! */ bp->b_error = ENOSPC; bp->b_flags |= B_ERROR; FDERRPRINT(FDEP_L1, FDEM_STRA, (C, "block is at end and this is a write\n")); } bp->b_resid = bp->b_bcount; biodone(bp); return (0); } /* if operation not a multiple of sector size, is error! */ if (bp->b_bcount % un->un_chars->fdc_sec_size) { FDERRPRINT(FDEP_L3, FDEM_STRA, (C, "fd%d: requested transfer size(0x%lx) is not" " multiple of sector size(0x%x)\n", 0, bp->b_bcount, un->un_chars->fdc_sec_size)); FDERRPRINT(FDEP_L3, FDEM_STRA, (C, " b_blkno=0x%lx b_flags=0x%x\n", (long)bp->b_blkno, bp->b_flags)); bp->b_error = EINVAL; bp->b_resid = bp->b_bcount; bp->b_flags |= B_ERROR; biodone(bp); return (0); } /* * Put the buf request in the controller's queue, FIFO. */ bp->av_forw = 0; sema_p(&fdc->c_ocsem); (void) pm_busy_component(fdc->c_dip, 0); mutex_enter(&fdc->c_lolock); CHECK_AND_WAIT_FD_STATE_SUSPENDED(fdc); if (fdc->c_un->un_state == FD_STATE_STOPPED) { mutex_exit(&fdc->c_lolock); if ((pm_raise_power(fdc->c_dip, 0, PM_LEVEL_ON)) != DDI_SUCCESS) { sema_v(&fdc->c_ocsem); (void) pm_idle_component(fdc->c_dip, 0); bp->b_error = EIO; bp->b_resid = bp->b_bcount; bp->b_flags |= B_ERROR; biodone(bp); return (0); } else { mutex_enter(&fdc->c_lolock); } } if (un->un_iostat) { kstat_waitq_enter(KIOSP); } if (fdc->c_actf) fdc->c_actl->av_forw = bp; else fdc->c_actf = bp; fdc->c_actl = bp; /* call fdstart to start the transfer */ fdstart(fdc); mutex_exit(&fdc->c_lolock); sema_v(&fdc->c_ocsem); (void) pm_idle_component(fdc->c_dip, 0); return (0); } /* ARGSUSED2 */ static int fd_read(dev_t dev, struct uio *uio, cred_t *cred_p) { FDERRPRINT(FDEP_L1, FDEM_RDWR, (C, "fd_read\n")); return (physio(fd_strategy, NULL, dev, B_READ, minphys, uio)); } /* ARGSUSED2 */ static int fd_write(dev_t dev, struct uio *uio, cred_t *cred_p) { FDERRPRINT(FDEP_L1, FDEM_RDWR, (C, "fd_write\n")); return (physio(fd_strategy, NULL, dev, B_WRITE, minphys, uio)); } static void fdmotoff(void *arg) { struct fdctlr *fdc = arg; int unit = fdc->c_un->un_unit_no; mutex_enter(&fdc->c_lolock); /* Just return if we're about to call untimeout */ if (fdc->c_mtimeid == 0) { mutex_exit(&fdc->c_lolock); return; } FDERRPRINT(FDEP_L1, FDEM_MOFF, (C, "fdmotoff\n")); fdc->c_mtimeid = 0; if (!(Msr(fdc) & CB) && (Dor(fdc) & (MOTEN(unit)))) { /* LINTED */ Set_dor(fdc, MOTEN(unit), 0); } mutex_exit(&fdc->c_lolock); } /* ARGSUSED */ static int fd_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cred_p, int *rval_p) { union { struct dk_cinfo dki; struct dk_geom dkg; struct dk_allmap32 dka; struct fd_char fdchar; struct fd_drive drvchar; int temp; } cpy; struct vtoc vtoc; struct fdunit *un; struct fdctlr *fdc; int unit, dkunit; int err = 0; uint_t sec_size; enum dkio_state state; int transfer_rate; FDERRPRINT(FDEP_L1, FDEM_IOCT, (C, "fd_ioctl: cmd 0x%x, arg 0x%lx\n", cmd, (long)arg)); /* The minor number should always be 0 */ if (FDUNIT(dev) != 0) return (ENXIO); fdc = fd_getctlr(dev); unit = fdc->c_un->un_unit_no; un = fdc->c_un; sec_size = un->un_chars->fdc_sec_size; bzero(&cpy, sizeof (cpy)); switch (cmd) { case DKIOCINFO: cpy.dki.dki_addr = 0; /* * The meaning of the dki_slave and dki_unit fields * is unclear. The sparc floppy driver follows the same * convention as sd.c in that the instance number is * returned in the dki_cnum field. The dki_slave field is * ignored. * * The dki_cnum contains the controller instance * and its value can be any positive number. Even * though currently Sparc platforms only support * one controller, the controller instance number * can be any number since it is assigned by the * system depending on the device properties. */ cpy.dki.dki_cnum = FDCTLR(dev); /* * Sparc platforms support only one floppy drive. * The device node for the controller is the same as * the device node for the drive. The x86 driver is * different in that it has a node for the controller * and a child node for each drive. Since Sparc supports * only one drive, the unit number will always be zero. */ cpy.dki.dki_unit = FDUNIT(dev); /* * The meaning of the dki_slave field is unclear. * So, I will leave it set to 0. */ cpy.dki.dki_slave = 0; cpy.dki.dki_ctype = (ushort_t)-1; if (fdc->c_fdtype & FDCTYPE_82077) cpy.dki.dki_ctype = DKC_INTEL82077; cpy.dki.dki_flags = DKI_FMTTRK; cpy.dki.dki_partition = FDPARTITION(dev); cpy.dki.dki_maxtransfer = maxphys / DEV_BSIZE; if (ddi_copyout((caddr_t)&cpy.dki, (caddr_t)arg, sizeof (cpy.dki), flag)) err = EFAULT; break; case DKIOCGGEOM: cpy.dkg.dkg_ncyl = un->un_chars->fdc_ncyl; cpy.dkg.dkg_nhead = un->un_chars->fdc_nhead; cpy.dkg.dkg_nsect = un->un_chars->fdc_secptrack; cpy.dkg.dkg_intrlv = un->un_label.dkl_intrlv; cpy.dkg.dkg_rpm = un->un_label.dkl_rpm; cpy.dkg.dkg_pcyl = un->un_chars->fdc_ncyl; cpy.dkg.dkg_read_reinstruct = (int)(cpy.dkg.dkg_nsect * cpy.dkg.dkg_rpm * 4) / 60000; cpy.dkg.dkg_write_reinstruct = cpy.dkg.dkg_read_reinstruct; if (ddi_copyout((caddr_t)&cpy.dkg, (caddr_t)arg, sizeof (cpy.dkg), flag)) err = EFAULT; break; case DKIOCSGEOM: FDERRPRINT(FDEP_L3, FDEM_IOCT, (C, "fd_ioctl: DKIOCSGEOM not supported\n")); err = ENOTTY; break; /* * return the map of all logical partitions */ case DKIOCGAPART: /* * We don't have anything to do if the application is ILP32 * because the label map has a 32-bit format. Otherwise * convert. */ if ((flag & DATAMODEL_MASK) == DATAMODEL_ILP32) { if (ddi_copyout(&un->un_label.dkl_map, (void *)arg, sizeof (struct dk_allmap32), flag)) err = EFAULT; } #ifdef _MULTI_DATAMODEL else { struct dk_allmap dk_allmap; ASSERT((flag & DATAMODEL_MASK) == DATAMODEL_LP64); for (dkunit = 0; dkunit < NDKMAP; dkunit++) { dk_allmap.dka_map[dkunit].dkl_cylno = un->un_label.dkl_map[dkunit].dkl_cylno; dk_allmap.dka_map[dkunit].dkl_nblk = un->un_label.dkl_map[dkunit].dkl_nblk; } if (ddi_copyout(&dk_allmap, (void *)arg, sizeof (struct dk_allmap), flag)) err = EFAULT; } #endif /* _MULTI_DATAMODEL */ break; /* * Set the map of all logical partitions */ case DKIOCSAPART: if ((flag & DATAMODEL_MASK) == DATAMODEL_ILP32) { if (ddi_copyin((const void *)arg, &cpy.dka, sizeof (cpy.dka), flag)) return (EFAULT); else { mutex_enter(&fdc->c_lolock); for (dkunit = 0; dkunit < NDKMAP; dkunit++) { un->un_label.dkl_map[dkunit] = cpy.dka.dka_map[dkunit]; } mutex_exit(&fdc->c_lolock); } } #ifdef _MULTI_DATAMODEL else { struct dk_allmap dk_allmap; ASSERT((flag & DATAMODEL_MASK) == DATAMODEL_LP64); if (ddi_copyin((const void *)arg, &dk_allmap, sizeof (dk_allmap), flag)) return (EFAULT); else { mutex_enter(&fdc->c_lolock); for (dkunit = 0; dkunit < NDKMAP; dkunit++) { un->un_label.dkl_map[dkunit].dkl_cylno = dk_allmap.dka_map[dkunit].dkl_cylno; un->un_label.dkl_map[dkunit].dkl_nblk = dk_allmap.dka_map[dkunit].dkl_nblk; } mutex_exit(&fdc->c_lolock); } } #endif /* _MULTI_DATAMODEL */ break; case DKIOCGVTOC: mutex_enter(&fdc->c_lolock); /* * Exit if the diskette has no label. * Also, get the label to make sure the * correct one is being used since the diskette * may have changed */ if (fdgetlabel(fdc, unit)) { mutex_exit(&fdc->c_lolock); err = EINVAL; break; } /* Build a vtoc from the diskette's label */ fd_build_user_vtoc(un, &vtoc); mutex_exit(&fdc->c_lolock); #ifdef _MULTI_DATAMODEL switch (ddi_model_convert_from(flag & FMODELS)) { case DDI_MODEL_ILP32: { struct vtoc32 vtoc32; vtoctovtoc32(vtoc, vtoc32); if (ddi_copyout(&vtoc32, (void *)arg, sizeof (struct vtoc32), flag)) return (EFAULT); break; } case DDI_MODEL_NONE: if (ddi_copyout(&vtoc, (void *)arg, sizeof (vtoc), flag)) return (EFAULT); break; } #else /* ! _MULTI_DATAMODEL */ if (ddi_copyout(&vtoc, (void *)arg, sizeof (vtoc), flag)) return (EFAULT); #endif /* _MULTI_DATAMODEL */ break; case DKIOCSVTOC: #ifdef _MULTI_DATAMODEL switch (ddi_model_convert_from(flag & FMODELS)) { case DDI_MODEL_ILP32: { struct vtoc32 vtoc32; if (ddi_copyin((const void *)arg, &vtoc32, sizeof (struct vtoc32), flag)) { return (EFAULT); } vtoc32tovtoc(vtoc32, vtoc); break; } case DDI_MODEL_NONE: if (ddi_copyin((const void *)arg, &vtoc, sizeof (vtoc), flag)) { return (EFAULT); } break; } #else /* ! _MULTI_DATAMODEL */ if (ddi_copyin((const void *)arg, &vtoc, sizeof (vtoc), flag)) return (EFAULT); #endif /* _MULTI_DATAMODEL */ mutex_enter(&fdc->c_lolock); /* * The characteristics structure must be filled in because * it helps build the vtoc. */ if ((un->un_chars->fdc_ncyl == 0) || (un->un_chars->fdc_nhead == 0) || (un->un_chars->fdc_secptrack == 0)) { mutex_exit(&fdc->c_lolock); err = EINVAL; break; } if ((err = fd_build_label_vtoc(un, &vtoc)) != 0) { mutex_exit(&fdc->c_lolock); break; } (void) pm_busy_component(fdc->c_dip, 0); err = fdrw(fdc, unit, FDWRITE, 0, 0, 1, (caddr_t)&un->un_label, sizeof (struct dk_label)); mutex_exit(&fdc->c_lolock); (void) pm_idle_component(fdc->c_dip, 0); break; case DKIOCSTATE: if (ddi_copyin((caddr_t)arg, (caddr_t)&state, sizeof (int), flag)) { err = EFAULT; break; } (void) pm_busy_component(fdc->c_dip, 0); err = fd_check_media(dev, state); (void) pm_idle_component(fdc->c_dip, 0); if (ddi_copyout((caddr_t)&un->un_media_state, (caddr_t)arg, sizeof (int), flag)) err = EFAULT; break; case FDIOGCHAR: if (ddi_copyout((caddr_t)un->un_chars, (caddr_t)arg, sizeof (struct fd_char), flag)) err = EFAULT; break; case FDIOSCHAR: if (ddi_copyin((caddr_t)arg, (caddr_t)&cpy.fdchar, sizeof (struct fd_char), flag)) { err = EFAULT; break; } /* * Check the fields in the fdchar structure that are either * driver or controller dependent. */ transfer_rate = cpy.fdchar.fdc_transfer_rate; if ((transfer_rate != 500) && (transfer_rate != 300) && (transfer_rate != 250) && (transfer_rate != 1000)) { FDERRPRINT(FDEP_L3, FDEM_IOCT, (C, "fd_ioctl: FDIOSCHAR odd transfer rate %d\n", cpy.fdchar.fdc_transfer_rate)); err = EINVAL; break; } if ((cpy.fdchar.fdc_nhead < 1) || (cpy.fdchar.fdc_nhead > 2)) { FDERRPRINT(FDEP_L3, FDEM_IOCT, (C, "fd_ioctl: FDIOSCHAR bad no. of heads %d\n", cpy.fdchar.fdc_nhead)); err = EINVAL; break; } /* * The number of cylinders must be between 0 and 255 */ if ((cpy.fdchar.fdc_ncyl < 0) || (cpy.fdchar.fdc_ncyl > 255)) { FDERRPRINT(FDEP_L3, FDEM_IOCT, (C, "fd_ioctl: FDIOSCHAR bad cyl no %d\n", cpy.fdchar.fdc_ncyl)); err = EINVAL; break; } /* Copy the fdchar structure */ mutex_enter(&fdc->c_lolock); *(un->un_chars) = cpy.fdchar; un->un_curfdtype = -1; mutex_exit(&fdc->c_lolock); break; case FDEJECT: /* eject disk */ case DKIOCEJECT: /* * Fail the ioctl if auto-eject isn't supported */ if (fdc->c_un->un_drive->fdd_ejectable == 0) { err = ENOSYS; } else { (void) pm_busy_component(fdc->c_dip, 0); mutex_enter(&fdc->c_lolock); CHECK_AND_WAIT_FD_STATE_SUSPENDED(fdc); if (fdc->c_un->un_state == FD_STATE_STOPPED) { mutex_exit(&fdc->c_lolock); if ((pm_raise_power(fdc->c_dip, 0, PM_LEVEL_ON)) != DDI_SUCCESS) { (void) pm_idle_component(fdc->c_dip, 0); err = EIO; } mutex_enter(&fdc->c_lolock); } } if (err == 0) { fdselect(fdc, unit, 1); fdeject(fdc, unit); mutex_exit(&fdc->c_lolock); } (void) pm_idle_component(fdc->c_dip, 0); /* * Make sure the drive is turned off */ if (fdc->c_fdtype & FDCTYPE_82077) { if (fdc->c_mtimeid == 0) { fdc->c_mtimeid = timeout(fdmotoff, fdc, Motoff_delay); } } break; case FDGETCHANGE: /* disk changed */ if (ddi_copyin((caddr_t)arg, (caddr_t)&cpy.temp, sizeof (int), flag)) { err = EFAULT; break; } /* zero out the user's parameter */ cpy.temp = 0; (void) pm_busy_component(fdc->c_dip, 0); mutex_enter(&fdc->c_lolock); CHECK_AND_WAIT_FD_STATE_SUSPENDED(fdc); if (fdc->c_un->un_state == FD_STATE_STOPPED) { mutex_exit(&fdc->c_lolock); if ((pm_raise_power(fdc->c_dip, 0, PM_LEVEL_ON)) != DDI_SUCCESS) { FDERRPRINT(FDEP_L1, FDEM_PWR, (C, "Power \ change failed. \n")); (void) pm_idle_component(fdc->c_dip, 0); return (EIO); } mutex_enter(&fdc->c_lolock); } if (un->un_flags & FDUNIT_CHANGED) cpy.temp |= FDGC_HISTORY; else cpy.temp &= ~FDGC_HISTORY; un->un_flags &= ~FDUNIT_CHANGED; if (fd_pollable) { /* * If it's a "pollable" floppy, then we don't * have to do all the fdcheckdisk nastyness to * figure out if the thing is still there. */ if (fdsense_chng(fdc, unit)) { cpy.temp |= FDGC_CURRENT; } else { cpy.temp &= ~FDGC_CURRENT; } } else { if (fdsense_chng(fdc, unit)) { /* * check disk change signal is asserted. * Now find out if the floppy is * inserted */ if (fdcheckdisk(fdc, unit)) { cpy.temp |= FDGC_CURRENT; } else { /* * Yes, the floppy was * reinserted. Implies * floppy change. */ cpy.temp &= ~FDGC_CURRENT; cpy.temp |= FDGC_HISTORY; } } else { cpy.temp &= ~FDGC_CURRENT; } } /* * For a pollable floppy, the floppy_change signal * reflects whether the floppy is in there or not. * We can not detect a floppy change if we don't poll * this signal when the floppy is being changed. * Because as soon as the floppy is put back, the * signal is reset. * BUT the pollable floppies are available only on * Sparcstation Voyager Voyagers (Gypsy) only and * those are motorized floppies. For motorized floppies, * the floppy can only (assuming the user doesn't use a * pin to take out the floppy) be taken out by * issuing 'eject' command which sets the * un->un_ejected flag. So, if the following * condition is true, we can assume there * was a floppy change. */ if (un->un_ejected && !(cpy.temp & FDGC_CURRENT)) { cpy.temp |= FDGC_HISTORY; } un->un_ejected = 0; /* return the write-protection status */ fdgetcsb(fdc); if (fdsensedrv(fdc, unit) & WP_SR3) { cpy.temp |= FDGC_CURWPROT; } fdretcsb(fdc); mutex_exit(&fdc->c_lolock); if (ddi_copyout((caddr_t)&cpy.temp, (caddr_t)arg, sizeof (int), flag)) err = EFAULT; (void) pm_idle_component(fdc->c_dip, 0); break; case FDGETDRIVECHAR: if (ddi_copyin((caddr_t)arg, (caddr_t)&cpy.drvchar, sizeof (struct fd_drive), flag)) { err = EFAULT; break; } /* * Return the ejectable value based on the FD_MANUAL_EJECT * property */ cpy.drvchar.fdd_ejectable = fdc->c_un->un_drive->fdd_ejectable; cpy.drvchar.fdd_maxsearch = nfdtypes; /* 3 - hi m lo density */ if (fd_pollable) /* pollable device */ cpy.drvchar.fdd_flags |= FDD_POLLABLE; /* the rest of the fd_drive struct is meaningless to us */ if (ddi_copyout((caddr_t)&cpy.drvchar, (caddr_t)arg, sizeof (struct fd_drive), flag)) err = EFAULT; break; case FDSETDRIVECHAR: FDERRPRINT(FDEP_L3, FDEM_IOCT, (C, "fd_ioctl: FDSETDRIVECHAR not supportedn\n")); err = ENOTTY; break; case DKIOCREMOVABLE: { int i = 1; /* no brainer: floppies are always removable */ if (ddi_copyout((caddr_t)&i, (caddr_t)arg, sizeof (int), flag)) { err = EFAULT; } break; } case DKIOCGMEDIAINFO: err = fd_get_media_info(un, (caddr_t)arg, flag); break; case FDIOCMD: { struct fd_cmd fc; int cyl, hd, spc, spt; int nblks; /* total no. of blocks */ #ifdef _MULTI_DATAMODEL switch (ddi_model_convert_from(flag & FMODELS)) { case DDI_MODEL_ILP32: { struct fd_cmd32 fc32; if (ddi_copyin((const void *)arg, &fc32, sizeof (fc32), flag)) { return (EFAULT); } fc.fdc_cmd = fc32.fdc_cmd; fc.fdc_flags = fc32.fdc_flags; fc.fdc_blkno = (daddr_t)fc32.fdc_blkno; fc.fdc_secnt = fc32.fdc_secnt; fc.fdc_bufaddr = (caddr_t)fc32.fdc_bufaddr; fc.fdc_buflen = fc32.fdc_buflen; fc.fdc_cmd = fc32.fdc_cmd; break; } case DDI_MODEL_NONE: if (ddi_copyin((const void *)arg, &fc, sizeof (fc), flag)) { return (EFAULT); } break; } #else /* ! _MULTI_DATAMODEL */ if (ddi_copyin((const void *)arg, &fc, sizeof (fc), flag)) { return (EFAULT); } #endif /* _MULTI_DATAMODEL */ if (fc.fdc_cmd == FDCMD_READ || fc.fdc_cmd == FDCMD_WRITE) { auto struct iovec aiov; auto struct uio auio; struct uio *uio = &auio; spc = (fc.fdc_cmd == FDCMD_READ)? B_READ: B_WRITE; bzero(&auio, sizeof (struct uio)); bzero(&aiov, sizeof (struct iovec)); aiov.iov_base = fc.fdc_bufaddr; aiov.iov_len = (uint_t)fc.fdc_secnt * sec_size; uio->uio_iov = &aiov; uio->uio_iovcnt = 1; uio->uio_resid = aiov.iov_len; uio->uio_segflg = UIO_USERSPACE; FDERRPRINT(FDEP_L2, FDEM_IOCT, (C, "fd_ioctl: call physio\n")); err = physio(fd_strategy, NULL, dev, spc, minphys, uio); break; } else if (fc.fdc_cmd != FDCMD_FORMAT_TRACK) { /* * The manpage states that only the FDCMD_WRITE, * FDCMD_READ, and the FDCMD_FORMAT_TR are available. */ FDERRPRINT(FDEP_L1, FDEM_IOCT, (C, "fd_ioctl: FDIOCMD invalid command\n")); err = EINVAL; break; } /* The command is FDCMD_FORMAT_TRACK */ spt = un->un_chars->fdc_secptrack; /* sec/trk */ spc = un->un_chars->fdc_nhead * spt; /* sec/cyl */ cyl = fc.fdc_blkno / spc; hd = (fc.fdc_blkno % spc) / spt; /* * Make sure the specified block number is in the correct * range. (block numbers start at 0) */ nblks = spc * un->un_chars->fdc_ncyl; if (fc.fdc_blkno < 0 || fc.fdc_blkno > (nblks - 1)) { err = EINVAL; break; } (void) pm_busy_component(fdc->c_dip, 0); mutex_enter(&fdc->c_lolock); CHECK_AND_WAIT_FD_STATE_SUSPENDED(fdc); if (fdc->c_un->un_state == FD_STATE_STOPPED) { mutex_exit(&fdc->c_lolock); if ((pm_raise_power(fdc->c_dip, 0, PM_LEVEL_ON)) != DDI_SUCCESS) { FDERRPRINT(FDEP_L1, FDEM_PWR, (C, "Power \ change failed. \n")); (void) pm_idle_component(fdc->c_dip, 0); return (EIO); } mutex_enter(&fdc->c_lolock); } if (fdformat(fdc, unit, cyl, hd)) err = EIO; mutex_exit(&fdc->c_lolock); (void) pm_idle_component(fdc->c_dip, 0); break; } case FDRAW: (void) pm_busy_component(fdc->c_dip, 0); err = fdrawioctl(fdc, unit, arg, flag); (void) pm_idle_component(fdc->c_dip, 0); break; #ifdef FD_DEBUG case IOCTL_DEBUG: fderrlevel--; if (fderrlevel < 0) fderrlevel = 3; cmn_err(C, "fdioctl: CHANGING debug to %d", fderrlevel); return (0); #endif /* FD_DEBUG */ default: FDERRPRINT(FDEP_L2, FDEM_IOCT, (C, "fd_ioctl: invalid ioctl 0x%x\n", cmd)); err = ENOTTY; break; } return (err); } /* * fdrawioctl * * - acquires the low level lock */ static int fdrawioctl(struct fdctlr *fdc, int unit, intptr_t arg, int mode) { struct fd_raw fdr; #ifdef _MULTI_DATAMODEL struct fd_raw32 fdr32; #endif struct fdcsb *csb; int i, err, flag; caddr_t fa; uint_t fc; size_t real_length; int res; ddi_device_acc_attr_t attr; ddi_acc_handle_t mem_handle; attr.devacc_attr_version = DDI_DEVICE_ATTR_V0; attr.devacc_attr_endian_flags = DDI_STRUCTURE_BE_ACC; attr.devacc_attr_dataorder = DDI_STRICTORDER_ACC; ASSERT(fdc->c_un->un_unit_no == unit); FDERRPRINT(FDEP_L1, FDEM_RAWI, (C, "fdrawioctl: cmd[0]=0x%x\n", fdr.fdr_cmd[0])); flag = B_READ; err = 0; fa = NULL; fc = (uint_t)0; /* Copy in the arguments */ switch (ddi_model_convert_from(mode)) { #ifdef _MULTI_DATAMODEL case DDI_MODEL_ILP32: if (ddi_copyin((caddr_t)arg, (caddr_t)&fdr32, sizeof (fdr32), mode)) { FDERRPRINT(FDEP_L1, FDEM_RAWI, (C, "fdrawioctl: copyin error, args32\n")); return (EFAULT); } bcopy(fdr32.fdr_cmd, fdr.fdr_cmd, sizeof (fdr.fdr_cmd)); fdr.fdr_cnum = fdr32.fdr_cnum; bcopy(fdr32.fdr_result, fdr.fdr_result, sizeof (fdr.fdr_result)); fdr.fdr_nbytes = fdr32.fdr_nbytes; fdr.fdr_addr = (caddr_t)fdr32.fdr_addr; break; #endif default: case DDI_MODEL_NONE: if (ddi_copyin((caddr_t)arg, (caddr_t)&fdr, sizeof (fdr), mode)) { FDERRPRINT(FDEP_L1, FDEM_RAWI, (C, "fdrawioctl: copyin error, args\n")); return (EFAULT); } break; } mutex_enter(&fdc->c_lolock); CHECK_AND_WAIT_FD_STATE_SUSPENDED(fdc); if (fdc->c_un->un_state == FD_STATE_STOPPED) { mutex_exit(&fdc->c_lolock); if ((pm_raise_power(fdc->c_dip, 0, PM_LEVEL_ON)) != DDI_SUCCESS) { FDERRPRINT(FDEP_L1, FDEM_PWR, (C, "Power change \ failed. \n")); (void) pm_idle_component(fdc->c_dip, 0); return (EIO); } mutex_enter(&fdc->c_lolock); } fdgetcsb(fdc); csb = &fdc->c_csb; csb->csb_unit = (uchar_t)unit; /* copy cmd bytes into csb */ for (i = 0; i <= fdr.fdr_cnum; i++) csb->csb_cmds[i] = fdr.fdr_cmd[i]; csb->csb_ncmds = (uchar_t)fdr.fdr_cnum; csb->csb_maxretry = 0; /* let the application deal with errors */ csb->csb_retrys = 0; switch (fdr.fdr_cmd[0] & 0x0f) { case FDRAW_SPECIFY: /* * Ensure that the right DMA mode is selected. There is * currently no way for the user to tell if DMA is * happening so set the value for the user. */ if (fdc->c_fdtype & FDCTYPE_DMA) csb->csb_cmds[2] = csb->csb_cmds[2] & 0xFE; else csb->csb_cmds[2] = csb->csb_cmds[2] | 0x1; csb->csb_opflags = CSB_OFNORESULTS; csb->csb_nrslts = 0; break; case FDRAW_SENSE_DRV: /* Insert the appropriate drive number */ csb->csb_cmds[1] = csb->csb_cmds[1] | (unit & DRV_MASK); csb->csb_opflags = CSB_OFIMMEDIATE; csb->csb_nrslts = 1; break; case FDRAW_REZERO: case FDRAW_SEEK: /* Insert the appropriate drive number */ csb->csb_cmds[1] = csb->csb_cmds[1] | (unit & DRV_MASK); csb->csb_opflags = CSB_OFSEEKOPS + CSB_OFTIMEIT; csb->csb_nrslts = 2; break; case FDRAW_FORMAT: FDERRPRINT(FDEP_L1, FDEM_RAWI, (C, "fdrawioctl: cmd is fdfraw format\n")); /* Insert the appropriate drive number */ csb->csb_cmds[1] = csb->csb_cmds[1] | (unit & DRV_MASK); csb->csb_opflags = CSB_OFXFEROPS + CSB_OFTIMEIT; csb->csb_nrslts = NRBRW; flag = B_WRITE; /* * Allocate memory for the command. * If PIO is being used, then add an extra 16 bytes */ if (fdc->c_fdtype & FDCTYPE_DMA) { fc = (uint_t)(fdr.fdr_nbytes); mutex_enter(&fdc->c_hilock); res = ddi_dma_mem_alloc(fdc->c_dmahandle, fc, &attr, DDI_DMA_STREAMING, DDI_DMA_DONTWAIT, 0, &fa, &real_length, &mem_handle); if (res != DDI_SUCCESS) { fdretcsb(fdc); mutex_exit(&fdc->c_lolock); mutex_exit(&fdc->c_hilock); return (EIO); } fdc->c_csb.csb_read = CSB_WRITE; if (fdstart_dma(fdc, fa, fc) != 0) { ddi_dma_mem_free(&mem_handle); fdretcsb(fdc); mutex_exit(&fdc->c_lolock); mutex_exit(&fdc->c_hilock); return (EIO); } mutex_exit(&fdc->c_hilock); } else { fc = (uint_t)(fdr.fdr_nbytes + 16); fa = kmem_zalloc(fc, KM_SLEEP); } /* copy in the user's command bytes */ if (ddi_copyin(fdr.fdr_addr, fa, (uint_t)fdr.fdr_nbytes, mode)) { fdretcsb(fdc); mutex_exit(&fdc->c_lolock); if (fdc->c_fdtype & FDCTYPE_DMA) { ddi_dma_mem_free(&mem_handle); FDERRPRINT(FDEP_L1, FDEM_RAWI, (C, "fdrawioctl: (err)free dma memory\n")); } else { kmem_free(fa, fc); } FDERRPRINT(FDEP_L1, FDEM_RAWI, (C, "fdrawioctl: ddi_copyin error\n")); return (EFAULT); } break; case FDRAW_WRCMD: case FDRAW_WRITEDEL: flag = B_WRITE; /* FALLTHROUGH */ case FDRAW_RDCMD: case FDRAW_READDEL: case FDRAW_READTRACK: /* Insert the appropriate drive number */ csb->csb_cmds[1] = csb->csb_cmds[1] | (unit & DRV_MASK); if (fdc->c_fdtype & FDCTYPE_SB) csb->csb_cmds[1] |= IPS; csb->csb_opflags = CSB_OFXFEROPS + CSB_OFTIMEIT; csb->csb_nrslts = NRBRW; break; default: fdretcsb(fdc); mutex_exit(&fdc->c_lolock); return (EINVAL); } if ((csb->csb_opflags & CSB_OFXFEROPS) && (fdr.fdr_nbytes == 0)) { fdretcsb(fdc); mutex_exit(&fdc->c_lolock); return (EINVAL); } csb->csb_opflags |= CSB_OFRAWIOCTL; FDERRPRINT(FDEP_L1, FDEM_RAWI, (C, "fdrawioctl: nbytes = %u\n", fdr.fdr_nbytes)); if ((fdr.fdr_cmd[0] & 0x0f) != FDRAW_FORMAT) { if ((fc = (uint_t)fdr.fdr_nbytes) > 0) { /* * In SunOS 4.X, we used to as_fault things in. * We really cannot do this in 5.0/SVr4. Unless * someone really believes that speed is of the * essence here, it is just much simpler to do * this in kernel space and use copyin/copyout. */ if (fdc->c_fdtype & FDCTYPE_DMA) { mutex_enter(&fdc->c_hilock); res = ddi_dma_mem_alloc(fdc->c_dmahandle, fc, &attr, DDI_DMA_STREAMING, DDI_DMA_DONTWAIT, 0, &fa, &real_length, &mem_handle); if (res != DDI_SUCCESS) { fdretcsb(fdc); mutex_exit(&fdc->c_lolock); mutex_exit(&fdc->c_hilock); return (EIO); } if (flag == B_WRITE) fdc->c_csb.csb_read = CSB_WRITE; else fdc->c_csb.csb_read = CSB_READ; if (fdstart_dma(fdc, fa, fc) != 0) { ddi_dma_mem_free(&mem_handle); fdretcsb(fdc); mutex_exit(&fdc->c_lolock); mutex_exit(&fdc->c_hilock); return (EIO); } mutex_exit(&fdc->c_hilock); } else { fa = kmem_zalloc(fc, KM_SLEEP); } if (flag == B_WRITE) { if (ddi_copyin(fdr.fdr_addr, fa, fc, mode)) { if (fdc->c_fdtype & FDCTYPE_DMA) ddi_dma_mem_free(&mem_handle); else kmem_free(fa, fc); fdretcsb(fdc); mutex_exit(&fdc->c_lolock); FDERRPRINT(FDEP_L1, FDEM_RAWI, (C, "fdrawioctl: can't copy data\n")); return (EFAULT); } } csb->csb_addr = fa; csb->csb_len = fc; } else { csb->csb_addr = 0; csb->csb_len = 0; } } else { csb->csb_addr = fa; csb->csb_len = fc; } FDERRPRINT(FDEP_L1, FDEM_RAWI, (C, "cmd: %x %x %x %x %x %x %x %x %x %x\n", csb->csb_cmds[0], csb->csb_cmds[1], csb->csb_cmds[2], csb->csb_cmds[3], csb->csb_cmds[4], csb->csb_cmds[5], csb->csb_cmds[6], csb->csb_cmds[7], csb->csb_cmds[8], csb->csb_cmds[9])); FDERRPRINT(FDEP_L1, FDEM_RAWI, (C, "nbytes: %x, opflags: %x, addr: %p, len: %x\n", csb->csb_ncmds, csb->csb_opflags, (void *)csb->csb_addr, csb->csb_len)); /* * Note that we ignore any error return s from fdexec. * This is the way the driver has been, and it may be * that the raw ioctl senders simply don't want to * see any errors returned in this fashion. */ if ((csb->csb_opflags & CSB_OFNORESULTS) || (csb->csb_opflags & CSB_OFIMMEDIATE)) { (void) fdexec(fdc, 0); /* don't sleep, don't check change */ } else { (void) fdexec(fdc, FDXC_SLEEP | FDXC_CHECKCHG); } FDERRPRINT(FDEP_L1, FDEM_RAWI, (C, "rslt: %x %x %x %x %x %x %x %x %x %x\n", csb->csb_rslt[0], csb->csb_rslt[1], csb->csb_rslt[2], csb->csb_rslt[3], csb->csb_rslt[4], csb->csb_rslt[5], csb->csb_rslt[6], csb->csb_rslt[7], csb->csb_rslt[8], csb->csb_rslt[9])); if ((fdr.fdr_cmd[0] & 0x0f) != FDRAW_FORMAT && fc && flag == B_READ && err == 0) { if (ddi_copyout(fa, fdr.fdr_addr, fc, mode)) { FDERRPRINT(FDEP_L1, FDEM_RAWI, (C, "fdrawioctl: can't copy read data\n")); err = EFAULT; } } if (fc) { if (fdc->c_fdtype & FDCTYPE_DMA) { ddi_dma_mem_free(&mem_handle); FDERRPRINT(FDEP_L1, FDEM_RAWI, (C, "fdrawioctl: free dma memory\n")); } else { kmem_free(fa, fc); } } /* copy cmd results into fdr */ for (i = 0; (int)i <= (int)csb->csb_nrslts; i++) fdr.fdr_result[i] = csb->csb_rslt[i]; fdr.fdr_nbytes = fdc->c_csb.csb_rlen; /* return resid */ switch (ddi_model_convert_from(mode)) { #ifdef _MULTI_DATAMODEL case DDI_MODEL_ILP32: bcopy(fdr.fdr_cmd, fdr32.fdr_cmd, sizeof (fdr32.fdr_cmd)); fdr32.fdr_cnum = fdr.fdr_cnum; bcopy(fdr.fdr_result, fdr32.fdr_result, sizeof (fdr32.fdr_result)); fdr32.fdr_nbytes = fdr.fdr_nbytes; fdr32.fdr_addr = (caddr32_t)fdr.fdr_addr; if (ddi_copyout(&fdr32, (caddr_t)arg, sizeof (fdr32), mode)) { FDERRPRINT(FDEP_L1, FDEM_RAWI, (C, "fdrawioctl: can't copy results32\n")); err = EFAULT; } break; #endif case DDI_MODEL_NONE: default: if (ddi_copyout(&fdr, (caddr_t)arg, sizeof (fdr), mode)) { FDERRPRINT(FDEP_L1, FDEM_RAWI, (C, "fdrawioctl: can't copy results\n")); err = EFAULT; } break; } fdretcsb(fdc); mutex_exit(&fdc->c_lolock); return (0); } /* * fdformat * format a track * For PIO, builds a table of sector data values with 16 bytes * (sizeof fdc's fifo) of dummy on end. This is so than when fdc->c_len * goes to 0 and fd_intr sends a TC that all the real formatting will * have already been done. * * - called with the low level lock held */ static int fdformat(struct fdctlr *fdc, int unit, int cyl, int hd) { struct fdcsb *csb; struct fdunit *un; struct fd_char *ch; int cmdresult; uchar_t *fmthdrs; caddr_t fd; int i; size_t real_length; ddi_device_acc_attr_t attr; ddi_acc_handle_t mem_handle; FDERRPRINT(FDEP_L1, FDEM_FORM, (C, "fdformat cyl %d, hd %d\n", cyl, hd)); fdgetcsb(fdc); ASSERT(fdc->c_un->un_unit_no == unit); csb = &fdc->c_csb; un = fdc->c_un; ch = un->un_chars; /* setup common things in csb */ csb->csb_unit = (uchar_t)unit; /* * The controller needs to do a seek before * each format to get to right cylinder. */ if (fdrecalseek(fdc, unit, cyl, FDXC_CHECKCHG)) { fdretcsb(fdc); return (EIO); } /* * now do the format itself */ csb->csb_nrslts = NRBRW; csb->csb_opflags = CSB_OFXFEROPS | CSB_OFTIMEIT; csb->csb_cmds[0] = FDRAW_FORMAT; /* always or in MFM bit */ csb->csb_cmds[0] |= MFM; csb->csb_cmds[1] = (hd << 2) | (unit & 0x03); csb->csb_cmds[2] = ch->fdc_medium ? 3 : 2; csb->csb_cmds[3] = ch->fdc_secptrack; csb->csb_cmds[4] = GPLF; csb->csb_cmds[5] = FDATA; csb->csb_ncmds = 6; csb->csb_maxretry = rwretry; csb->csb_retrys = 0; /* * NOTE: have to add size of fifo also - for dummy format action * if PIO is being used. */ if (fdc->c_fdtype & FDCTYPE_DMA) { csb->csb_len = (uint_t)4 * ch->fdc_secptrack; attr.devacc_attr_version = DDI_DEVICE_ATTR_V0; attr.devacc_attr_endian_flags = DDI_STRUCTURE_BE_ACC; attr.devacc_attr_dataorder = DDI_STRICTORDER_ACC; mutex_enter(&fdc->c_hilock); cmdresult = ddi_dma_mem_alloc(fdc->c_dmahandle, csb->csb_len, &attr, DDI_DMA_STREAMING, DDI_DMA_DONTWAIT, 0, &fd, &real_length, &mem_handle); if (cmdresult != DDI_SUCCESS) { mutex_exit(&fdc->c_hilock); return (cmdresult); } fdc->c_csb.csb_read = CSB_WRITE; if (fdstart_dma(fdc, fd, csb->csb_len) != 0) { ddi_dma_mem_free(&mem_handle); mutex_exit(&fdc->c_hilock); return (-1); } mutex_exit(&fdc->c_hilock); } else { csb->csb_len = (uint_t)4 * ch->fdc_secptrack + 16; fd = kmem_zalloc(csb->csb_len, KM_SLEEP); fmthdrs = (uchar_t *)fd; } csb->csb_addr = (caddr_t)fd; for (i = 1; i <= ch->fdc_secptrack; i++) { *fd++ = (uchar_t)cyl; /* cylinder */ *fd++ = (uchar_t)hd; /* head */ *fd++ = (uchar_t)i; /* sector number */ *fd++ = ch->fdc_medium ? 3 : 2; /* sec_size code */ } if ((cmdresult = fdexec(fdc, FDXC_SLEEP | FDXC_CHECKCHG)) == 0) { if (csb->csb_cmdstat) cmdresult = EIO; /* XXX TBD NYD for now */ } if (fdc->c_fdtype & FDCTYPE_DMA) { ddi_dma_mem_free(&mem_handle); } else { kmem_free((caddr_t)fmthdrs, csb->csb_len); } fdretcsb(fdc); return (cmdresult); } /* * fdstart * called from fd_strategy() or from fdXXXX() to setup and * start operations of read or write only (using buf structs). * Because the chip doesn't handle crossing cylinder boundaries on * the fly, this takes care of those boundary conditions. Note that * it sleeps until the operation is done *within fdstart* - so that * when fdstart returns, the operation is already done. * * - called with the low level lock held * */ static int slavio_index_pulse_work_around = 0; static void fdstart(struct fdctlr *fdc) { struct buf *bp; struct fdcsb *csb; struct fdunit *un; struct fd_char *ch; struct dk_map32 *dkm; uint_t part; /* partition number for the transfer */ uint_t start_part; /* starting block of the partition */ uint_t last_part; /* last block of the partition */ uint_t blk; /* starting block of transfer on diskette */ uint_t sect; /* starting block's offset into track */ uint_t cyl; /* starting cylinder of the transfer */ uint_t bincyl; /* starting blocks's offset into cylinder */ uint_t secpcyl; /* number of sectors per cylinder */ uint_t phys_blkno; /* no. of blocks on the diskette */ uint_t head; /* one of two diskette heads */ uint_t unit; uint_t len, tlen; caddr_t addr; caddr_t temp_addr; uint_t partial_read = 0; int sb_temp_buf_used = 0; bp = fdc->c_actf; while (bp != NULL) { fdc->c_actf = bp->av_forw; fdc->c_current = bp; /* * Initialize the buf structure. The residual count is * initially the number of bytes to be read or written */ bp->b_flags &= ~B_ERROR; bp->b_error = 0; bp->b_resid = bp->b_bcount; bp_mapin(bp); /* map in buffers */ addr = bp->b_un.b_addr; /* assign buffer address */ /* * Find the unit and partition numbers. */ unit = fdc->c_un->un_unit_no; un = fdc->c_un; ch = un->un_chars; part = FDPARTITION(bp->b_edev); dkm = &un->un_label.dkl_map[part]; if (un->un_chars->fdc_medium) { phys_blkno = bp->b_blkno >> 1; } else { phys_blkno = bp->b_blkno; } if (un->un_iostat) { kstat_waitq_to_runq(KIOSP); } FDERRPRINT(FDEP_L1, FDEM_STRT, (C, "fdstart: bp=0x%p blkno=0x%x bcount=0x%x\n", (void *)bp, (int)bp->b_blkno, (int)bp->b_bcount)); /* * Get the csb and initialize the values that are the same * for DMA and PIO. */ fdgetcsb(fdc); /* get csb (maybe wait for it) */ csb = &fdc->c_csb; csb->csb_unit = unit; /* floppy unit number */ /* * bugID:4133425 : If the controller is SLAVIO, and * the read does not reach end of track, then modify * the tlen to read until the end of track to a temp * buffer and disable MT. After the read is over, * copy the useful portion of the data to 'addr'. * Enable this feature only when * slavio_index_pulse_work_aound variable is * set in /etc/system. */ if (bp->b_flags & B_READ) { if (((fdc->c_fdtype & FDCTYPE_SLAVIO) && slavio_index_pulse_work_around) || (fdc->c_fdtype & FDCTYPE_TCBUG)) csb->csb_cmds[0] = SK | FDRAW_RDCMD | MFM; else csb->csb_cmds[0] = MT | SK | FDRAW_RDCMD | MFM; } else { if (fdc->c_fdtype & FDCTYPE_TCBUG) csb->csb_cmds[0] = FDRAW_WRCMD | MFM; else csb->csb_cmds[0] = MT | FDRAW_WRCMD | MFM; } if (bp->b_flags & B_READ) fdc->c_csb.csb_read = CSB_READ; else fdc->c_csb.csb_read = CSB_WRITE; csb->csb_cmds[5] = ch->fdc_medium ? 3 : 2; /* sector size */ csb->csb_cmds[6] = ch->fdc_secptrack; /* EOT-# of sectors/trk */ csb->csb_cmds[7] = GPLN; /* GPL - gap 3 size code */ csb->csb_cmds[8] = SSSDTL; /* DTL - be 0xFF if N != 0 */ csb->csb_ncmds = NCBRW; /* number of command bytes */ csb->csb_nrslts = NRBRW; /* number of result bytes */ /* * opflags for interrupt handler, et.al. */ csb->csb_opflags = CSB_OFXFEROPS | CSB_OFTIMEIT; /* * Make sure the transfer does not go off the end * of the partition. Limit the actual amount transferred * to fit the partition. */ blk = phys_blkno; start_part = (dkm->dkl_cylno * ch->fdc_secptrack * ch->fdc_nhead); blk = blk + start_part; last_part = start_part + dkm->dkl_nblk; if ((blk + (bp->b_bcount / ch->fdc_sec_size)) > last_part) len = (last_part - blk) * ch->fdc_sec_size; else len = (uint_t)bp->b_bcount; /* * now we have the real start blk, * addr and len for xfer op * sectors per cylinder */ secpcyl = ch->fdc_nhead * ch->fdc_secptrack; /* * The controller can transfer up to a cylinder at a time. * Early revs of the 82077 have a bug that causes the chip to * fail to respond to the Terminal Count signal. Due to this * bug, controllers with type FDCTYPE_TCBUG, only transfer up * to a track at a time. * See earlier comment for bugID:4133425 for index pulse * work around. */ while (len != 0) { cyl = blk / secpcyl; /* cylinder of transfer */ bincyl = blk % secpcyl; /* blk within cylinder */ head = bincyl / ch->fdc_secptrack; sect = (bincyl % ch->fdc_secptrack) + 1; /* sect w/in track */ /* * If the desired block and length will go beyond the * cylinder end, limit it to the cylinder end. */ if ((fdc->c_fdtype & FDCTYPE_SLAVIO) && slavio_index_pulse_work_around && (fdc->c_csb.csb_read == CSB_READ)) { tlen = (ch->fdc_secptrack - sect + 1) * ch->fdc_sec_size; if (len < tlen) { partial_read = 1; temp_addr = (caddr_t)kmem_alloc(tlen, KM_SLEEP); } } else if (fdc->c_fdtype & FDCTYPE_TCBUG) { tlen = len; if (len > ((ch->fdc_secptrack - sect + 1) * ch->fdc_sec_size)) tlen = (ch->fdc_secptrack - sect + 1) * ch->fdc_sec_size; } else { if (len > ((secpcyl - bincyl) * ch->fdc_sec_size)) tlen = (secpcyl - bincyl) * ch->fdc_sec_size; else tlen = len; } if (fdc->c_fdtype & FDCTYPE_SB) { /* * To avoid underrun errors during IFB activity. */ if (tlen > max_fd_dma_len) tlen = max_fd_dma_len; } FDERRPRINT(FDEP_L1, FDEM_STRT, (C, " blk 0x%x, addr 0x%p, len 0x%x\n", blk, (void *)addr, len)); FDERRPRINT(FDEP_L1, FDEM_STRT, (C, "cyl:%x, head:%x, sec:%x\n", cyl, head, sect)); FDERRPRINT(FDEP_L1, FDEM_STRT, (C, " resid 0x%lx, tlen %d\n", bp->b_resid, tlen)); /* * Finish programming the command */ csb->csb_cmds[1] = (head << 2) | unit; if (fdc->c_fdtype & FDCTYPE_SB) csb->csb_cmds[1] |= IPS; csb->csb_cmds[2] = cyl; /* C - cylinder address */ csb->csb_cmds[3] = head; /* H - head number */ csb->csb_cmds[4] = sect; /* R - sector number */ if (fdc->c_fdtype & FDCTYPE_TCBUG) csb->csb_cmds[6] = sect + (tlen / ch->fdc_sec_size) - 1; csb->csb_len = tlen; if (partial_read) csb->csb_addr = temp_addr; else csb->csb_addr = addr; /* retry this many times max */ csb->csb_maxretry = rwretry; csb->csb_retrys = 0; /* If platform supports DMA, set up DMA resources */ if (fdc->c_fdtype & FDCTYPE_DMA) { if ((fdc->c_fdtype & FDCTYPE_SB) && (((uint32_t)addr & 0xFFFF0000) != (((uint32_t)addr + tlen) & 0xFFFF0000))) { csb->csb_addr = fdc->dma_buf; sb_temp_buf_used = 1; if (csb->csb_read != CSB_READ) { bcopy(addr, fdc->dma_buf, tlen); } } mutex_enter(&fdc->c_hilock); if (fdstart_dma(fdc, csb->csb_addr, tlen) != 0) { bp->b_flags |= B_ERROR; bp->b_error = EAGAIN; mutex_exit(&fdc->c_hilock); FDERRPRINT(FDEP_L1, FDEM_STRT, (C, "fdstart: no dma resources\n")); break; } mutex_exit(&fdc->c_hilock); } bp->b_error = fdexec(fdc, FDXC_SLEEP|FDXC_CHECKCHG); if (bp->b_error != 0) { /* * error in fdexec */ FDERRPRINT(FDEP_L1, FDEM_STRT, (C, "fdstart: bad exec of bp: 0x%p, err %d\n", (void *)bp, bp->b_error)); bp->b_flags |= B_ERROR; if (partial_read) { partial_read = 0; kmem_free(temp_addr, tlen); } break; } /* * If it was a partial read, copy the useful * portion of data to 'addr'. */ if (partial_read) { partial_read = 0; bcopy(temp_addr, addr, len); kmem_free(temp_addr, tlen); tlen = len; } if ((fdc->c_fdtype & FDCTYPE_SB) && (csb->csb_read == CSB_READ)) { if (sb_temp_buf_used) { bcopy(fdc->dma_buf, addr, tlen); sb_temp_buf_used = 0; } } blk += tlen / ch->fdc_sec_size; len -= tlen; addr += tlen; bp->b_resid -= tlen; } FDERRPRINT(FDEP_L1, FDEM_STRT, (C, "fdstart done: b_resid %lu, b_count %lu, csb_rlen %d\n", bp->b_resid, bp->b_bcount, fdc->c_csb.csb_rlen)); fdc->c_current = 0; fdretcsb(fdc); if (un->un_iostat) { if (bp->b_flags & B_READ) { KIOSP->reads++; KIOSP->nread += (bp->b_bcount - bp->b_resid); } else { KIOSP->writes++; KIOSP->nwritten += (bp->b_bcount - bp->b_resid); } kstat_runq_exit(KIOSP); } biodone(bp); /* * Look at the next buffer */ bp = fdc->c_actf; } } /* * Set up DMA resources * The DMA handle was initialized in fd_attach() * Assumes the handle has already been allocated by fd_attach() */ static int fdstart_dma(struct fdctlr *fdc, caddr_t addr, uint_t len) { int flags; /* flags for setting up resources */ int res; FDERRPRINT(FDEP_L1, FDEM_SDMA, (C, "fdstart_dma: start\n")); if (fdc->c_csb.csb_read == CSB_READ) { flags = DDI_DMA_READ; } else { flags = DDI_DMA_WRITE; } /* allow partial mapping to maximize the portability of the driver */ flags = flags | DDI_DMA_PARTIAL; FDERRPRINT(FDEP_L1, FDEM_SDMA, (C, "fdstart_dma: amt. asked for %d\n", len)); /* * Zero out the current cookie. This is done to ensure that * the previous transfers cookie information can in no way be * used. */ bzero((char *)&fdc->c_csb.csb_dmacookie, sizeof (fdc->c_csb.csb_dmacookie)); fdc->c_csb.csb_nwin = 0; fdc->c_csb.csb_windex = 0; fdc->c_csb.csb_ccount = 0; res = ddi_dma_addr_bind_handle(fdc->c_dmahandle, NULL, addr, len, flags, DDI_DMA_DONTWAIT, 0, &fdc->c_csb.csb_dmacookie, &fdc->c_csb.csb_ccount); switch (res) { case DDI_DMA_MAPPED: /* * There is one window. csb_windex is the index * into the array of windows. If there are n * windows then, (0 <= windex <= n-1). csb_windex * represents the index of the next window * to be processed. */ fdc->c_csb.csb_nwin = 1; fdc->c_csb.csb_windex = 1; FDERRPRINT(FDEP_L1, FDEM_SDMA, (C, "fdstart_dma: DDI_DMA_MAPPED\n")); break; case DDI_DMA_PARTIAL_MAP: /* * obtain the number of DMA windows */ if (ddi_dma_numwin(fdc->c_dmahandle, &fdc->c_csb.csb_nwin) != DDI_SUCCESS) { return (-1); } FDERRPRINT(FDEP_L1, FDEM_SDMA, (C, "fdstart_dma: partially mapped %d windows\n", fdc->c_csb.csb_nwin)); /* * The DMA window currently in use is window number * one. */ fdc->c_csb.csb_windex = 1; break; case DDI_DMA_NORESOURCES: FDERRPRINT(FDEP_L1, FDEM_SDMA, (C, "fdstart_dma: no resources\n")); return (-1); case DDI_DMA_NOMAPPING: FDERRPRINT(FDEP_L1, FDEM_SDMA, (C, "fdstart_dma: no mapping\n")); return (-1); case DDI_DMA_TOOBIG: FDERRPRINT(FDEP_L1, FDEM_SDMA, (C, "fdstart_dma: too big\n")); return (-1); case DDI_DMA_INUSE: FDERRPRINT(FDEP_L1, FDEM_SDMA, (C, "fdstart_dma: dma inuse\n")); return (-1); default: FDERRPRINT(FDEP_L1, FDEM_SDMA, (C, "fdstart_dma: result is 0x%x\n", res)); return (-1); }; FDERRPRINT(FDEP_L1, FDEM_SDMA, (C, "fdstart_dma: bound the handle\n")); ASSERT(fdc->c_csb.csb_dmacookie.dmac_size); FDERRPRINT(FDEP_L1, FDEM_SDMA, (C, "fdstart_dma: done\n")); return (0); } /* * fd_unbind_handle: unbind a dma handle if one exists * return EIO if unbind failes */ static int fd_unbind_handle(struct fdctlr *fdc) { if ((fdc->c_fdtype & FDCTYPE_DMA) && ((fdc->c_csb.csb_read == CSB_READ) || (fdc->c_csb.csb_read == CSB_WRITE))) { mutex_enter(&fdc->c_hilock); if (fdc->c_fdtype & FDCTYPE_SB) { if (fdc->sb_dma_lock) { release_sb_dma(fdc); } } /* * If the byte count isn't zero, then the DMA engine is * still doing a transfer. If the byte count is nonzero, * reset the DMA engine to cause it to drain. */ if (get_data_count_register(fdc) != 0) { FDERRPRINT(FDEP_L1, FDEM_EXEC, (C, "unbind & byte count isn't zero\n")); reset_dma_controller(fdc); set_dma_control_register(fdc, DCSR_INIT_BITS); } if (ddi_dma_unbind_handle(fdc->c_dmahandle) != DDI_SUCCESS) { FDERRPRINT(FDEP_L1, FDEM_EXEC, (C, "problem unbinding the handle\n")); mutex_exit(&fdc->c_hilock); return (EIO); } mutex_exit(&fdc->c_hilock); } return (0); } /* * fdexec * all commands go through here. Assumes the command block * fdctlr.c_csb is filled in. The bytes are sent to the * controller and then we do whatever else the csb says - * like wait for immediate results, etc. * * All waiting for operations done is in here - to allow retrys * and checking for disk changed - so we don't have to worry * about sleeping at interrupt level. * * RETURNS: 0 if all ok, * ENXIO - diskette not in drive * EBUSY - if chip is locked or busy * EIO - for timeout during sending cmds to chip * * to sleep: set FDXC_SLEEP, to check for disk * changed: set FDXC_CHECKCHG * * - called with the lock held */ static int fdexec(struct fdctlr *fdc, int flags) { struct fdcsb *csb; int i; int to, unit; uchar_t tmp; caddr_t a = (caddr_t)fdc; FDERRPRINT(FDEP_L1, FDEM_EXEC, (C, "fdexec: flags:%x\n", flags)); ASSERT(mutex_owned(&fdc->c_lolock)); csb = &fdc->c_csb; unit = csb->csb_unit; ASSERT(unit == fdc->c_un->un_unit_no); retry: FDERRPRINT(FDEP_L1, FDEM_EXEC, (C, "fdexec: cmd is %s\n", fdcmds[csb->csb_cmds[0] & 0x1f].cmdname)); FDERRPRINT(FDEP_L1, FDEM_EXEC, (C, "fdexec: transfer rate = %d\n", fdc->c_un->un_chars->fdc_transfer_rate)); FDERRPRINT(FDEP_L1, FDEM_EXEC, (C, "fdexec: sec size = %d\n", fdc->c_un->un_chars->fdc_sec_size)); FDERRPRINT(FDEP_L1, FDEM_EXEC, (C, "fdexec: nblocks (512) = %d\n", fdc->c_un->un_label.dkl_map[2].dkl_nblk)); if ((fdc->c_fdtype & FDCTYPE_CTRLMASK) == FDCTYPE_82077) { fdexec_turn_on_motor(fdc, flags, unit); } fdselect(fdc, unit, 1); /* select drive */ /* * select data rate for this unit/command */ switch (fdc->c_un->un_chars->fdc_transfer_rate) { case 500: Dsr(fdc, 0); break; case 300: Dsr(fdc, 1); break; case 250: Dsr(fdc, 2); break; } drv_usecwait(2); /* * If checking for changed is enabled (i.e., not seeking in checkdisk), * we sample the DSKCHG line to see if the diskette has wandered away. */ if ((flags & FDXC_CHECKCHG) && fdsense_chng(fdc, unit)) { FDERRPRINT(FDEP_L1, FDEM_EXEC, (C, "diskette changed\n")); fdc->c_un->un_flags |= FDUNIT_CHANGED; if (fdcheckdisk(fdc, unit)) { (void) fd_unbind_handle(fdc); return (ENXIO); } } /* * gather some statistics */ switch (csb->csb_cmds[0] & 0x1f) { case FDRAW_RDCMD: fdc->fdstats.rd++; break; case FDRAW_WRCMD: fdc->fdstats.wr++; break; case FDRAW_REZERO: fdc->fdstats.recal++; break; case FDRAW_FORMAT: fdc->fdstats.form++; break; default: fdc->fdstats.other++; break; } /* * Always set the opmode *prior* to poking the chip. * This way we don't have to do any locking at high level. */ csb->csb_raddr = 0; csb->csb_rlen = 0; if (csb->csb_opflags & CSB_OFSEEKOPS) { csb->csb_opmode = 2; } else if (csb->csb_opflags & CSB_OFIMMEDIATE) { csb->csb_opmode = 0; } else { csb->csb_opmode = 1; /* normal data xfer commands */ csb->csb_raddr = csb->csb_addr; csb->csb_rlen = csb->csb_len; } bzero((caddr_t)csb->csb_rslt, 10); csb->csb_status = 0; csb->csb_cmdstat = 0; /* * Program the DMA engine with the length and address of the transfer * (DMA is only used on a read or a write) */ if ((fdc->c_fdtype & FDCTYPE_DMA) && ((fdc->c_csb.csb_read == CSB_READ) || (fdc->c_csb.csb_read == CSB_WRITE))) { mutex_enter(&fdc->c_hilock); /* Reset the dcsr to clear it of all errors */ reset_dma_controller(fdc); FDERRPRINT(FDEP_L1, FDEM_EXEC, (C, "cookie addr 0x%p\n", (void *)fdc->c_csb.csb_dmacookie.dmac_laddress)); FDERRPRINT(FDEP_L1, FDEM_EXEC, (C, "cookie length %ld\n", fdc->c_csb.csb_dmacookie.dmac_size)); ASSERT(fdc->c_csb.csb_dmacookie.dmac_size); set_data_count_register(fdc, fdc->c_csb.csb_dmacookie.dmac_size); set_data_address_register(fdc, fdc->c_csb.csb_dmacookie.dmac_laddress); /* Program the DCSR */ if (fdc->c_csb.csb_read == CSB_READ) set_dma_mode(fdc, CSB_READ); else set_dma_mode(fdc, CSB_WRITE); mutex_exit(&fdc->c_hilock); } /* * I saw this (chip unexpectedly busy) happen when i shoved the * floppy into the drive while * running a dd if= /dev/rfd0c. so it *is* possible for this to happen. * we need to do a ctlr reset ... */ if (Msr(fdc) & CB) { /* tried to give command to chip when it is busy! */ FDERRPRINT(FDEP_L3, FDEM_EXEC, (C, "fdc: unexpectedly busy-stat 0x%x\n", Msr(fdc))); csb->csb_cmdstat = 1; /* XXX TBD ERRS NYD for now */ (void) fd_unbind_handle(fdc); return (EBUSY); } /* Give command to the controller */ for (i = 0; i < (int)csb->csb_ncmds; i++) { /* Test the readiness of the controller to receive the cmd */ for (to = FD_CRETRY; to; to--) { if ((Msr(fdc) & (DIO|RQM)) == RQM) break; } if (to == 0) { FDERRPRINT(FDEP_L2, FDEM_EXEC, (C, "fdc: no RQM - stat 0x%x\n", Msr(fdc))); csb->csb_cmdstat = 1; (void) fd_unbind_handle(fdc); return (EIO); } Set_Fifo(fdc, csb->csb_cmds[i]); FDERRPRINT(FDEP_L1, FDEM_EXEC, (C, "fdexec: sent 0x%x, Msr 0x%x\n", csb->csb_cmds[i], Msr(fdc))); } /* * Start watchdog timer on data transfer type commands - required * in case a diskette is not present or is unformatted */ if (csb->csb_opflags & CSB_OFTIMEIT) { fdc->c_timeid = timeout(fdwatch, a, tosec * drv_usectohz(1000000)); } FDERRPRINT(FDEP_L1, FDEM_EXEC, (C, "fdexec: cmd sent, Msr 0x%x\n", Msr(fdc))); /* If the operation has no results - then just return */ if (csb->csb_opflags & CSB_OFNORESULTS) { if (fdc->c_fdtype & FDCTYPE_82077) { if (fdc->c_mtimeid == 0) { fdc->c_mtimeid = timeout(fdmotoff, a, Motoff_delay); } } FDERRPRINT(FDEP_L1, FDEM_EXEC, (C, "fdexec: O K ..\n")); /* * Make sure the last byte is received well by the * controller. On faster CPU, it may still be busy * by the time another command comes here. */ for (to = FD_CRETRY; to; to--) { if ((Msr(fdc) & (DIO|RQM)) == RQM) break; } if (to == 0) { csb->csb_cmdstat = 1; return (EIO); } /* * An operation that has no results isn't doing DMA so, * there is no reason to try to unbind a handle */ return (0); } /* * If this operation has no interrupt AND an immediate result * then we just busy wait for the results and stuff them into * the csb */ if (csb->csb_opflags & CSB_OFIMMEDIATE) { to = FD_RRETRY; csb->csb_nrslts = 0; /* * Wait while this command is still going on. */ while ((tmp = Msr(fdc)) & CB) { /* * If RQM + DIO, then a result byte is at hand. */ if ((tmp & (RQM|DIO|CB)) == (RQM|DIO|CB)) { csb->csb_rslt[csb->csb_nrslts++] = Fifo(fdc); /* * FDERRPRINT(FDEP_L4, FDEM_EXEC, * (C, "fdexec: got result 0x%x\n", * csb->csb_nrslts)); */ } else if (--to == 0) { FDERRPRINT(FDEP_L4, FDEM_EXEC, (C, "fdexec: timeout, Msr%x, nr%x\n", Msr(fdc), csb->csb_nrslts)); csb->csb_status = 2; if (fdc->c_fdtype & FDCTYPE_82077) { if (fdc->c_mtimeid == 0) { fdc->c_mtimeid = timeout( fdmotoff, a, Motoff_delay); } } /* * There is no DMA happening. No need to * try freeing a handle. */ return (EIO); } } } /* * If told to sleep here, well then sleep! */ if (flags & FDXC_SLEEP) { fdc->c_flags |= FDCFLG_WAITING; while (fdc->c_flags & FDCFLG_WAITING) { cv_wait(&fdc->c_iocv, &fdc->c_lolock); } } /* * kludge for end-of-cylinder error which must be ignored!!! */ if ((fdc->c_fdtype & FDCTYPE_TCBUG) && ((csb->csb_rslt[0] & IC_SR0) == 0x40) && (csb->csb_rslt[1] & EN_SR1)) csb->csb_rslt[0] &= ~IC_SR0; /* * See if there was an error detected, if so, fdrecover() * will check it out and say what to do. * * Don't do this, though, if this was the Sense Drive Status * or the Dump Registers command. */ if (((csb->csb_rslt[0] & IC_SR0) || (fdc->c_csb.csb_dcsr_rslt) || (csb->csb_status)) && ((csb->csb_cmds[0] != FDRAW_SENSE_DRV) && (csb->csb_cmds[0] != DUMPREG))) { /* if it can restarted OK, then do so, else return error */ if (fdrecover(fdc) != 0) { if (fdc->c_fdtype & FDCTYPE_82077) { if (fdc->c_mtimeid == 0) { fdc->c_mtimeid = timeout(fdmotoff, a, Motoff_delay); } } /* * If this was a dma transfer, unbind the handle so * that other transfers may use it. */ (void) fd_unbind_handle(fdc); return (EIO); } else { /* ASSUMES that cmd is still intact in csb */ goto retry; } } /* things went ok */ if (fdc->c_fdtype & FDCTYPE_82077) { if (fdc->c_mtimeid == 0) { fdc->c_mtimeid = timeout(fdmotoff, a, Motoff_delay); } } FDERRPRINT(FDEP_L1, FDEM_EXEC, (C, "fdexec: O K ..........\n")); if (fd_unbind_handle(fdc)) return (EIO); return (0); } /* * Turn on the drive's motor * * - called with the low level lock held */ static void fdexec_turn_on_motor(struct fdctlr *fdc, int flags, uint_t unit) { clock_t local_lbolt; timeout_id_t timeid; /* * The low level mutex may not be held over the call to * untimeout(). See the manpage for details. */ timeid = fdc->c_mtimeid; fdc->c_mtimeid = 0; if (timeid) { mutex_exit(&fdc->c_lolock); (void) untimeout(timeid); mutex_enter(&fdc->c_lolock); } ASSERT(fdc->c_un->un_unit_no == unit); set_rotational_speed(fdc, unit); if (!(Dor(fdc) & (MOTEN(unit)))) { /* * Turn on the motor */ FDERRPRINT(FDEP_L1, FDEM_EXEC, (C, "fdexec: turning on motor\n")); /* LINTED */ Set_dor(fdc, (MOTEN(unit)), 1); if (flags & FDXC_SLEEP) { local_lbolt = ddi_get_lbolt(); (void) cv_timedwait(&fdc->c_motoncv, &fdc->c_lolock, local_lbolt + Moton_delay); } else { drv_usecwait(1000000); } } } /* * fdrecover * see if possible to retry an operation. * All we can do is restart the operation. If we are out of allowed * retries - return non-zero so that the higher levels will be notified. * * RETURNS: 0 if ok to restart, !0 if can't or out of retries * - called with the low level lock held */ static int fdrecover(struct fdctlr *fdc) { struct fdcsb *csb; FDERRPRINT(FDEP_L1, FDEM_RECO, (C, "fdrecover\n")); csb = &fdc->c_csb; if (fdc->c_flags & FDCFLG_TIMEDOUT) { struct fdcsb savecsb; fdc->c_flags ^= FDCFLG_TIMEDOUT; csb->csb_rslt[1] |= TO_SR1; FDERRPRINT(FDEP_L1, FDEM_RECO, (C, "fd%d: %s timed out\n", csb->csb_unit, fdcmds[csb->csb_cmds[0] & 0x1f].cmdname)); /* use private csb */ savecsb = fdc->c_csb; bzero(&fdc->c_csb, sizeof (struct fdcsb)); FDERRPRINT(FDEP_L1, FDEM_RECO, (C, "fdc: resetting\n")); (void) fdreset(fdc); if (fdc->c_fdtype & FDCTYPE_DMA) { mutex_enter(&fdc->c_hilock); /* Reset the DMA engine as well */ reset_dma_controller(fdc); set_dma_control_register(fdc, DCSR_INIT_BITS); mutex_exit(&fdc->c_hilock); } /* check change first?? */ /* don't ckchg in fdexec, too convoluted */ (void) fdrecalseek(fdc, savecsb.csb_unit, -1, 0); fdc->c_csb = savecsb; /* restore original csb */ } /* * gather statistics on errors */ if (csb->csb_rslt[1] & DE_SR1) { fdc->fdstats.de++; } if (csb->csb_rslt[1] & OR_SR1) { fdc->fdstats.run++; } if (csb->csb_rslt[1] & (ND_SR1+MA_SR1)) { fdc->fdstats.bfmt++; } if (csb->csb_rslt[1] & TO_SR1) { fdc->fdstats.to++; } /* * If raw ioctl don't examine results just pass status * back via fdraw. Raw commands are timed too, so put this * after the above check. */ if (csb->csb_opflags & CSB_OFRAWIOCTL) { return (1); } /* * if there was a pci bus error, do not retry */ if (csb->csb_dcsr_rslt == 1) { FDERRPRINT(FDEP_L3, FDEM_RECO, (C, "fd%d: host bus error\n", 0)); return (1); } /* * If there was an error with the DMA functions, do not retry */ if (csb->csb_dma_rslt == 1) { FDERRPRINT(FDEP_L1, FDEM_RECO, (C, "fd%d: DMA interface error\n", csb->csb_unit)); return (1); } /* * if we have run out of retries, return an error * XXX need better status interp */ csb->csb_retrys++; if (csb->csb_retrys > csb->csb_maxretry) { FDERRPRINT(FDEP_L3, FDEM_RECO, (C, "fd%d: %s failed (%x %x %x)\n", 0, fdcmds[csb->csb_cmds[0] & 0x1f].cmdname, csb->csb_rslt[0], csb->csb_rslt[1], csb->csb_rslt[2])); if (csb->csb_rslt[1] & NW_SR1) { FDERRPRINT(FDEP_L3, FDEM_RECO, (C, "fd%d: not writable\n", 0)); } if (csb->csb_rslt[1] & DE_SR1) { FDERRPRINT(FDEP_L3, FDEM_RECO, (C, "fd%d: crc error blk %d\n", 0, (int)fdc->c_current->b_blkno)); } if (csb->csb_rslt[1] & OR_SR1) { if (fdc->c_fdtype & FDCTYPE_SB) { /* * When using southbridge chip we need to * retry atleast 10 times to shake off the * underrun err. */ if (csb->csb_retrys <= rwretry) return (0); } FDERRPRINT(FDEP_L3, FDEM_RECO, (C, "fd%d: over/underrun\n", 0)); } if (csb->csb_rslt[1] & (ND_SR1+MA_SR1)) { FDERRPRINT(FDEP_L3, FDEM_RECO, (C, "fd%d: bad format\n", 0)); } if (csb->csb_rslt[1] & TO_SR1) { FDERRPRINT(FDEP_L3, FDEM_RECO, (C, "fd%d: timeout\n", 0)); } csb->csb_cmdstat = 1; /* failed - give up */ return (1); } if (csb->csb_opflags & CSB_OFSEEKOPS) { /* seek, recal type commands - just look at st0 */ FDERRPRINT(FDEP_L2, FDEM_RECO, (C, "fd%d: %s error : st0 0x%x\n", csb->csb_unit, fdcmds[csb->csb_cmds[0] & 0x1f].cmdname, csb->csb_rslt[0])); } if (csb->csb_opflags & CSB_OFXFEROPS) { /* rd, wr, fmt type commands - look at st0, st1, st2 */ FDERRPRINT(FDEP_L2, FDEM_RECO, (C, "fd%d: %s error : st0=0x%x st1=0x%x st2=0x%x\n", csb->csb_unit, fdcmds[csb->csb_cmds[0] & 0x1f].cmdname, csb->csb_rslt[0], csb->csb_rslt[1], csb->csb_rslt[2])); } return (0); /* tell fdexec to retry */ } /* * Interrupt handle for DMA */ static uint_t fdintr_dma() { struct fdctlr *fdc; off_t off; size_t len; uint_t ccount; uint_t windex; uint_t done = 0; int tmp_dcsr; int to; uchar_t tmp; int i = 0; int res = DDI_INTR_UNCLAIMED; int not_cheerio = 1; /* search for a controller that's expecting an interrupt */ fdc = fdctlrs; if (fdc->c_fdtype & FDCTYPE_CHEERIO) { tmp_dcsr = get_dma_control_register(fdc); if (!(tmp_dcsr & DCSR_INT_PEND) && !(DCSR_ERR_PEND & tmp_dcsr)) return (res); not_cheerio = 0; } mutex_enter(&fdc->c_hilock); if (fdc->c_csb.csb_opmode == 0x0) { fdc->c_csb.csb_opmode = 2; } if (fdc->sb_dma_lock) { release_sb_dma(fdc); } /* * An interrupt can come from either the floppy controller or * or the DMA engine. The DMA engine will only issue an * interrupt if there was an error. */ switch (fdc->c_csb.csb_opmode) { case 0x1: /* read/write/format data-xfer case */ FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "fdintr_dma: opmode 1\n")); /* * See if the interrupt is from the floppy * controller. If there is, take out the status bytes. */ if (not_cheerio || (tmp_dcsr & DCSR_INT_PEND)) { FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "fdintr_dma: INT_PEND \n")); res = DDI_INTR_CLAIMED; to = FD_RRETRY; fdc->c_csb.csb_nrslts = 0; /* check status */ i = 0; /* * CB turns off once all the result bytes are * read. * * NOTE: the counters are there so that the * handler will never get stuck in a loop. * If the counters do reach their maximum * values, then a catastrophic error has * occurred. This should never be the case. * The counters only came into play during * development. */ while (((tmp = Msr(fdc)) & CB) && (i < 1000001)) { /* * If RQM + DIO, then a result byte * is at hand. */ if ((tmp & (RQM|DIO|CB)) == (RQM|DIO|CB)) { fdc->c_csb.csb_rslt [fdc->c_csb.csb_nrslts++] = Fifo(fdc); FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "fdintr_dma: res 0x%x\n", fdc->c_csb.csb_rslt [fdc->c_csb.csb_nrslts - 1])); } else if (--to == 0) { /* * controller was never * ready to give results */ fdc->c_csb.csb_status = 2; break; } i++; } if (i == 10000) { FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "First loop overran\n")); } } /* * See if the interrupt is from the DMA engine, * which will only interrupt on an error */ if ((!not_cheerio) && (tmp_dcsr & DCSR_ERR_PEND)) { res = DDI_INTR_CLAIMED; done = 1; fdc->c_csb.csb_dcsr_rslt = 1; FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "fdintr_dma: Error pending\n")); reset_dma_controller(fdc); set_dma_control_register(fdc, DCSR_INIT_BITS); break; } /* TCBUG kludge */ if ((fdc->c_fdtype & FDCTYPE_TCBUG) && ((fdc->c_csb.csb_rslt[0] & IC_SR0) == 0x40) && (fdc->c_csb.csb_rslt[1] & EN_SR1)) { fdc->c_csb.csb_rslt[0] &= ~IC_SR0; fdc->c_csb.csb_rslt[1] &= ~EN_SR1; } /* Exit if there were errors in the DMA */ if (((fdc->c_csb.csb_rslt[0] & IC_SR0) != 0) || (fdc->c_csb.csb_rslt[1] != 0) || (fdc->c_csb.csb_rslt[2] != 0)) { done = 1; FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "fdintr_dma: errors in command\n")); break; } FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "fdintr_dma: dbcr 0x%x\n", get_data_count_register(fdc))); /* * The csb_ccount is the number of cookies that still * need to be processed. A cookie was just processed * so decrement the cookie counter. */ if (fdc->c_csb.csb_ccount == 0) { done = 1; break; } fdc->c_csb.csb_ccount--; ccount = fdc->c_csb.csb_ccount; windex = fdc->c_csb.csb_windex; /* * If there are no more cookies and all the windows * have been DMA'd, then DMA is done. * */ if ((ccount == 0) && (windex == fdc->c_csb.csb_nwin)) { done = 1; /* * The handle is unbound in fdexec */ break; } if (ccount != 0) { /* process the next cookie */ ddi_dma_nextcookie(fdc->c_dmahandle, &fdc->c_csb.csb_dmacookie); FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "cookie addr 0x%" PRIx64 "\n", fdc->c_csb.csb_dmacookie.dmac_laddress)); FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "cookie length %lu\n", fdc->c_csb.csb_dmacookie.dmac_size)); } else { (void) ddi_dma_getwin(fdc->c_dmahandle, fdc->c_csb.csb_windex, &off, &len, &fdc->c_csb.csb_dmacookie, &fdc->c_csb.csb_ccount); fdc->c_csb.csb_windex++; FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "fdintr_dma: process %d window\n", fdc->c_csb.csb_windex)); FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "fdintr_dma: process no. cookies %d\n", fdc->c_csb.csb_ccount)); FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "cookie addr 0x%" PRIx64 "\n", fdc->c_csb.csb_dmacookie.dmac_laddress)); FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "cookie length %lu\n", fdc->c_csb.csb_dmacookie.dmac_size)); } /* * Program the DMA engine with the length and * the address of the transfer */ ASSERT(fdc->c_csb.csb_dmacookie.dmac_size); set_data_count_register(fdc, fdc->c_csb.csb_dmacookie.dmac_size); set_data_address_register(fdc, fdc->c_csb.csb_dmacookie.dmac_laddress); FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "fdintr_dma: size 0x%lx\n", fdc->c_csb.csb_dmacookie.dmac_size)); /* reprogram the controller */ fdc->c_csb.csb_cmds[2] = fdc->c_csb.csb_rslt[3]; fdc->c_csb.csb_cmds[3] = fdc->c_csb.csb_rslt[4]; fdc->c_csb.csb_cmds[4] = fdc->c_csb.csb_rslt[5]; fdc->c_csb.csb_cmds[1] = (fdc->c_csb.csb_cmds[1] & ~0x04) | (fdc->c_csb.csb_rslt[4] << 2); for (i = 0; i < (int)fdc->c_csb.csb_ncmds; i++) { /* * Test the readiness of the controller * to receive the cmd */ for (to = FD_CRETRY; to; to--) { if ((Msr(fdc) & (DIO|RQM)) == RQM) break; } if (to == 0) { FDERRPRINT(FDEP_L2, FDEM_EXEC, (C, "fdc: no RQM - stat 0x%x\n", Msr(fdc))); /* stop the DMA from happening */ fdc->c_csb.csb_status = 2; done = 1; break; } Set_Fifo(fdc, fdc->c_csb.csb_cmds[i]); FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "fdintr_dma: sent 0x%x, Msr 0x%x\n", fdc->c_csb.csb_cmds[i], Msr(fdc))); } /* reenable DMA */ if ((!not_cheerio) && (!done)) set_dma_control_register(fdc, tmp_dcsr | DCSR_EN_DMA); break; case 0x2: /* seek/recal type cmd */ FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "fintr_dma: opmode 2\n")); /* * See if the interrupt is from the DMA engine, * which will only interrupt if there was an error. */ if ((!not_cheerio) && (tmp_dcsr & DCSR_ERR_PEND)) { res = DDI_INTR_CLAIMED; done = 1; fdc->c_csb.csb_dcsr_rslt = 1; reset_dma_controller(fdc); set_dma_control_register(fdc, DCSR_INIT_BITS); break; } /* See if the interrupt is from the floppy controller */ if (not_cheerio || (tmp_dcsr & DCSR_INT_PEND)) { res = DDI_INTR_CLAIMED; /* * Wait until there's no longer a command * in progress */ FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "fdintr_dma: interrupt pending\n")); i = 0; while (((Msr(fdc) & CB)) && (i < 10000)) { i++; } if (i == 10000) FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "2nd loop overran !!!\n")); /* * Check the RQM bit to see if the controller is * ready to transfer status of the command. */ i = 0; while ((!(Msr(fdc) & RQM)) && (i < 10000)) { i++; } if (i == 10000) FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "3rd loop overran !!!\n")); /* * Issue the Sense Interrupt Status Command */ Set_Fifo(fdc, SNSISTAT); i = 0; while ((!(Msr(fdc) & RQM)) && (i < 10000)) { i++; } if (i == 10000) FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "4th loop overran !!!\n")); /* Store the first result byte */ fdc->c_csb.csb_rslt[0] = Fifo(fdc); i = 0; while ((!(Msr(fdc) & RQM)) && (i < 10000)) { i++; } if (i == 10000) FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "5th loop overran !!!\n")); /* Store the second result byte */ fdc->c_csb.csb_rslt[1] = Fifo(fdc); done = 1; } } /* * We are done with the actual interrupt handling here. * The portion below should be actually be done by fd_lointr(). * We should be triggering the fd_lointr here and exiting. * However for want of time this will be done in the next FIX. * * Hence for now we will release hilock only and keep the remaining * code as it is. * Releasing of hilock ensures that we don't hold on to the * lolock and hilock at the same time. * hilock is acquired each time dma related registers are accessed. */ mutex_exit(&fdc->c_hilock); /* Make signal and get out of interrupt handler */ if (done) { mutex_enter(&fdc->c_lolock); fdc->c_csb.csb_opmode = 0; /* reset watchdog timer if armed and not already triggered */ if (fdc->c_timeid) { timeout_id_t timeid = fdc->c_timeid; fdc->c_timeid = 0; mutex_exit(&fdc->c_lolock); (void) untimeout(timeid); mutex_enter(&fdc->c_lolock); } if (fdc->c_flags & FDCFLG_WAITING) { /* * somebody's waiting on finish of fdctlr/csb, * wake them */ FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "fdintr_dma: signal the waiter\n")); fdc->c_flags ^= FDCFLG_WAITING; cv_signal(&fdc->c_iocv); /* * FDCFLG_BUSY is NOT cleared, NOR is the csb given * back; the operation just finished can look at the csb */ } else { FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "fdintr_dma: nobody sleeping (%x %x %x)\n", fdc->c_csb.csb_rslt[0], fdc->c_csb.csb_rslt[1], fdc->c_csb.csb_rslt[2])); } mutex_exit(&fdc->c_lolock); } /* update high level interrupt counter */ if (fdc->c_intrstat) KIOIP->intrs[KSTAT_INTR_HARD]++; FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "fdintr_dma: done\n")); return (res); } /* * fd_lointr * This is the low level SW interrupt handler triggered by the high * level interrupt handler (or by fdwatch). */ static uint_t fd_lointr(caddr_t arg) { struct fdctlr *fdc = (struct fdctlr *)arg; struct fdcsb *csb; csb = &fdc->c_csb; FDERRPRINT(FDEP_L1, FDEM_INTR, (C, "fdintr: opmode %d\n", csb->csb_opmode)); /* * Check that lowlevel interrupt really meant to trigger us. */ if (csb->csb_opmode != 4) { /* * This should probably be protected, but, what the * heck...the cost isn't worth the accuracy for this * statistic. */ if (fdc->c_intrstat) KIOIP->intrs[KSTAT_INTR_SPURIOUS]++; return (DDI_INTR_UNCLAIMED); } mutex_enter(&fdc->c_lolock); csb->csb_opmode = 0; /* reset watchdog timer if armed and not already triggered */ if (fdc->c_timeid) { timeout_id_t timeid = fdc->c_timeid; fdc->c_timeid = 0; mutex_exit(&fdc->c_lolock); (void) untimeout(timeid); mutex_enter(&fdc->c_lolock); } if (fdc->c_flags & FDCFLG_WAITING) { /* * somebody's waiting on finish of fdctlr/csb, wake them */ fdc->c_flags ^= FDCFLG_WAITING; cv_signal(&fdc->c_iocv); /* * FDCFLG_BUSY is NOT cleared, NOR is the csb given back; so * the operation just finished can look at the csb */ } else { FDERRPRINT(FDEP_L3, FDEM_INTR, (C, "fdintr: nobody sleeping (%x %x %x)\n", csb->csb_rslt[0], csb->csb_rslt[1], csb->csb_rslt[2])); } if (fdc->c_intrstat) KIOIP->intrs[KSTAT_INTR_SOFT]++; mutex_exit(&fdc->c_lolock); return (DDI_INTR_CLAIMED); } /* * fdwatch * is called from timein() when a floppy operation has expired. */ static void fdwatch(void *arg) { struct fdctlr *fdc = arg; int old_opmode; struct fdcsb *csb; FDERRPRINT(FDEP_L1, FDEM_WATC, (C, "fdwatch\n")); mutex_enter(&fdc->c_lolock); if (fdc->c_timeid == 0) { /* * fdintr got here first, ergo, no timeout condition.. */ FDERRPRINT(FDEP_L1, FDEM_WATC, (C, "fdwatch: no timeout\n")); mutex_exit(&fdc->c_lolock); return; } fdc->c_timeid = 0; csb = &fdc->c_csb; mutex_enter(&fdc->c_hilock); /* * XXXX: We should probably reset the bloody chip */ old_opmode = csb->csb_opmode; FDERRPRINT(FDEP_L1, FDEM_WATC, (C, "fd%d: timeout, opmode:%d\n", csb->csb_unit, old_opmode)); csb->csb_opmode = 4; mutex_exit(&fdc->c_hilock); FDERRPRINT(FDEP_L1, FDEM_WATC, (C, "fdwatch: cmd %s timed out\n", fdcmds[csb->csb_cmds[0] & 0x1f].cmdname)); fdc->c_flags |= FDCFLG_TIMEDOUT; csb->csb_status = CSB_CMDTO; if ((fdc->c_fdtype & FDCTYPE_DMA) == 0) { ddi_trigger_softintr(fdc->c_softid); KIOIP->intrs[KSTAT_INTR_WATCHDOG]++; mutex_exit(&fdc->c_lolock); } else { mutex_exit(&fdc->c_lolock); (void) fd_lointr((caddr_t)fdctlrs); } } /* * fdgetcsb * wait until the csb is free */ static void fdgetcsb(struct fdctlr *fdc) { FDERRPRINT(FDEP_L1, FDEM_GETC, (C, "fdgetcsb\n")); ASSERT(mutex_owned(&fdc->c_lolock)); while (fdc->c_flags & FDCFLG_BUSY) { fdc->c_flags |= FDCFLG_WANT; cv_wait(&fdc->c_csbcv, &fdc->c_lolock); } fdc->c_flags |= FDCFLG_BUSY; /* got it! */ } /* * fdretcsb * return csb */ static void fdretcsb(struct fdctlr *fdc) { ASSERT(mutex_owned(&fdc->c_lolock)); FDERRPRINT(FDEP_L1, FDEM_RETC, (C, "fdretcsb\n")); fdc->c_flags &= ~FDCFLG_BUSY; /* let go */ fdc->c_csb.csb_read = 0; if (fdc->c_flags & FDCFLG_WANT) { fdc->c_flags ^= FDCFLG_WANT; /* * broadcast the signal. One thread will wake up and * set the flags to FDCFLG_BUSY. If more than one thread is * waiting then each thread will wake up in turn. The first * thread to wake-up will set the FDCFLG_BUSY flag and the * subsequent threads will will wake-up, but reset the * flag to FDCFLG_WANT because the FDCFLG_BUSY bit is set. */ cv_broadcast(&fdc->c_csbcv); } } /* * fdreset * reset THE controller, and configure it to be * the way it ought to be * ASSUMES: that it already owns the csb/fdctlr! * * - called with the low level lock held */ static int fdreset(struct fdctlr *fdc) { struct fdcsb *csb; clock_t local_lbolt = 0; timeout_id_t timeid; FDERRPRINT(FDEP_L1, FDEM_RESE, (C, "fdreset\n")); ASSERT(mutex_owned(&fdc->c_lolock)); /* count resets */ fdc->fdstats.reset++; /* * On the 82077, the DSR will clear itself after a reset. Upon exiting * the reset, a polling interrupt will be generated. If the floppy * interrupt is enabled, it's possible for cv_signal() to be called * before cv_wait(). This will cause the system to hang. Turn off * the floppy interrupt to avoid this race condition */ if ((fdc->c_fdtype & FDCTYPE_CTRLMASK) == FDCTYPE_82077) { /* * We need to perform any timeouts before we Reset the * controller. We cannot afford to drop the c_lolock mutex after * Resetting the controller. The reason is that we get a spate * of interrupts until we take the controller out of reset. * The way we avoid this spate of continuous interrupts is by * holding on to the c_lolock and forcing the fdintr_dma routine * to go to sleep waiting for this mutex. */ /* Do not hold the mutex across the untimeout call */ timeid = fdc->c_mtimeid; fdc->c_mtimeid = 0; if (timeid) { mutex_exit(&fdc->c_lolock); (void) untimeout(timeid); mutex_enter(&fdc->c_lolock); } /* LINTED */ Set_dor(fdc, DMAGATE, 0); FDERRPRINT(FDEP_L1, FDEM_RESE, (C, "fdreset: set dor\n")); } /* toggle software reset */ Dsr(fdc, SWR); drv_usecwait(5); FDERRPRINT(FDEP_L1, FDEM_RESE, (C, "fdreset: toggled software reset\n")); /* * This sets the data rate to 500Kbps (for high density) * XXX should use current characteristics instead XXX */ Dsr(fdc, 0); drv_usecwait(5); switch (fdc->c_fdtype & FDCTYPE_CTRLMASK) { case FDCTYPE_82077: /* * when we bring the controller out of reset it will generate * a polling interrupt. fdintr() will field it and schedule * fd_lointr(). There will be no one sleeping but we are * expecting an interrupt so.... */ fdc->c_flags |= FDCFLG_WAITING; /* * The reset bit must be cleared to take the 077 out of * reset state and the DMAGATE bit must be high to enable * interrupts. */ /* LINTED */ Set_dor(fdc, DMAGATE|RESET, 1); FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdattach: Dor 0x%x\n", Dor(fdc))); local_lbolt = ddi_get_lbolt(); if (cv_timedwait(&fdc->c_iocv, &fdc->c_lolock, local_lbolt + drv_usectohz(1000000)) == -1) { return (-1); } break; default: fdc->c_flags |= FDCFLG_WAITING; /* * A timed wait is not used because it's possible for the timer * to go off before the controller has a chance to interrupt. */ cv_wait(&fdc->c_iocv, &fdc->c_lolock); break; } csb = &fdc->c_csb; /* setup common things in csb */ csb->csb_unit = fdc->c_un->un_unit_no; csb->csb_nrslts = 0; csb->csb_opflags = CSB_OFNORESULTS; csb->csb_maxretry = 0; csb->csb_retrys = 0; csb->csb_read = CSB_NULL; /* send SPECIFY command to fdc */ /* csb->unit is don't care */ csb->csb_cmds[0] = FDRAW_SPECIFY; csb->csb_cmds[1] = fdspec[0]; /* step rate, head unload time */ if (fdc->c_fdtype & FDCTYPE_DMA) csb->csb_cmds[2] = SPEC_DMA_MODE; else csb->csb_cmds[2] = fdspec[1]; /* head load time, DMA mode */ csb->csb_ncmds = 3; /* XXX for now ignore errors, they "CAN'T HAPPEN" */ (void) fdexec(fdc, 0); /* no FDXC_CHECKCHG, ... */ /* no results */ /* send CONFIGURE command to fdc */ /* csb->unit is don't care */ csb->csb_cmds[0] = CONFIGURE; csb->csb_cmds[1] = fdconf[0]; /* motor info, motor delays */ csb->csb_cmds[2] = fdconf[1]; /* enaimplsk, disapoll, fifothru */ csb->csb_cmds[3] = fdconf[2]; /* track precomp */ csb->csb_ncmds = 4; csb->csb_read = CSB_NULL; csb->csb_retrys = 0; /* XXX for now ignore errors, they "CAN'T HAPPEN" */ (void) fdexec(fdc, 0); /* no FDXC_CHECKCHG, ... */ return (0); } /* * fdrecalseek * performs recalibrates or seeks if the "arg" is -1 does a * recalibrate on a drive, else it seeks to the cylinder of * the drive. The recalibrate is also used to find a drive, * ie if the drive is not there, the controller says "error" * on the operation * NOTE: that there is special handling of this operation in the hardware * interrupt routine - it causes the operation to appear to have results; * ie the results of the SENSE INTERRUPT STATUS that the hardware interrupt * function did for us. * NOTE: because it uses sleep/wakeup it must be protected in a critical * section so create one before calling it! * * RETURNS: 0 for ok, * else errno from fdexec, * or ENODEV if error (infers hardware type error) * * - called with the low level lock held */ static int fdrecalseek(struct fdctlr *fdc, int unit, int arg, int execflg) { struct fdcsb *csb; int result; ASSERT(fdc->c_un->un_unit_no == unit); FDERRPRINT(FDEP_L1, FDEM_RECA, (C, "fdrecalseek to %d\n", arg)); /* XXX TODO: check see argument for <= num cyls OR < 256 */ csb = &fdc->c_csb; csb->csb_unit = (uchar_t)unit; csb->csb_cmds[1] = unit & 0x03; if (arg == -1) { /* is recal... */ csb->csb_cmds[0] = FDRAW_REZERO; csb->csb_ncmds = 2; } else { csb->csb_cmds[0] = FDRAW_SEEK; csb->csb_cmds[2] = (uchar_t)arg; csb->csb_ncmds = 3; } csb->csb_nrslts = 2; /* 2 for SENSE INTERRUPTS */ csb->csb_opflags = CSB_OFSEEKOPS | CSB_OFTIMEIT; /* * MAYBE NYD need to set retries to different values? - depending on * drive characteristics - if we get to high capacity drives */ csb->csb_maxretry = skretry; csb->csb_retrys = 0; /* send cmd off to fdexec */ if (result = fdexec(fdc, FDXC_SLEEP | execflg)) { goto out; } /* * if recal, test for equipment check error * ASSUMES result = 0 from above call */ if (arg == -1) { result = 0; } else { /* for seeks, any old error will do */ if ((csb->csb_rslt[0] & IC_SR0) || csb->csb_cmdstat) result = ENODEV; } out: return (result); } /* * fdsensedrv * do a sense_drive command. used by fdopen and fdcheckdisk. * * - called with the lock held */ static int fdsensedrv(struct fdctlr *fdc, int unit) { struct fdcsb *csb; ASSERT(fdc->c_un->un_unit_no == unit); csb = &fdc->c_csb; /* setup common things in csb */ csb->csb_unit = (uchar_t)unit; csb->csb_opflags = CSB_OFIMMEDIATE; csb->csb_cmds[0] = FDRAW_SENSE_DRV; /* MOT bit set means don't delay */ csb->csb_cmds[1] = MOT | (unit & 0x03); csb->csb_ncmds = 2; csb->csb_nrslts = 1; csb->csb_maxretry = skretry; csb->csb_retrys = 0; /* XXX for now ignore errors, they "CAN'T HAPPEN" */ (void) fdexec(fdc, 0); /* DON't check changed!, no sleep */ FDERRPRINT(FDEP_L1, FDEM_CHEK, (C, "fdsensedrv: result 0x%x", csb->csb_rslt[0])); return (csb->csb_rslt[0]); /* return status byte 3 */ } /* * fdcheckdisk * check to see if the disk is still there - do a recalibrate, * then see if DSKCHG line went away, if so, diskette is in; else * it's (still) out. */ static int fdcheckdisk(struct fdctlr *fdc, int unit) { auto struct fdcsb savecsb; struct fdcsb *csb; int err, st3; int seekto; /* where to seek for reset of DSKCHG */ FDERRPRINT(FDEP_L1, FDEM_CHEK, (C, "fdcheckdisk, unit %d\n", unit)); ASSERT(fdc->c_un->un_unit_no == unit); /* * save old csb */ csb = &fdc->c_csb; savecsb = fdc->c_csb; bzero((caddr_t)csb, sizeof (*csb)); /* * Read drive status to see if at TRK0, if so, seek to cyl 1, * else seek to cyl 0. We do this because the controller is * "smart" enough to not send any step pulses (which are how * the DSKCHG line gets reset) if it sees TRK0 'cause it * knows the drive is already recalibrated. */ st3 = fdsensedrv(fdc, unit); /* check TRK0 bit in status */ if (st3 & T0_SR3) seekto = 1; /* at TRK0, seek out */ else seekto = 0; /* * DON'T recurse check changed */ err = fdrecalseek(fdc, unit, seekto, 0); /* "restore" old csb, check change state */ fdc->c_csb = savecsb; /* any recal/seek errors are too serious to attend to */ if (err) { FDERRPRINT(FDEP_L2, FDEM_CHEK, (C, "fdcheckdisk err %d\n", err)); return (err); } /* * if disk change still asserted, no diskette in drive! */ if (fdsense_chng(fdc, csb->csb_unit)) { FDERRPRINT(FDEP_L2, FDEM_CHEK, (C, "fdcheckdisk no disk\n")); return (1); } return (0); } /* * fdselect() - select drive, needed for external to chip select logic * fdeject() - ejects drive, must be previously selected * fdsense_chng() - sense disk changed line from previously selected drive * return s 1 is signal asserted, else 0 */ /* ARGSUSED */ static void fdselect(struct fdctlr *fdc, int unit, int on) { ASSERT(fdc->c_un->un_unit_no == unit); FDERRPRINT(FDEP_L1, FDEM_DSEL, (C, "fdselect, unit %d, on = %d\n", unit, on)); switch (fdc->c_fdtype & FDCTYPE_AUXIOMASK) { case FDCTYPE_MACHIO: set_auxioreg(AUX_DRVSELECT, on); break; case FDCTYPE_SLAVIO: case FDCTYPE_CHEERIO: FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdselect: (before) Dor 0x%x\n", Dor(fdc))); if (unit == 0) { Set_dor(fdc, DRVSEL, !on); } else { Set_dor(fdc, DRVSEL, on); } FDERRPRINT(FDEP_L1, FDEM_ATTA, (C, "fdselect: Dor 0x%x\n", Dor(fdc))); break; default: break; } } /* ARGSUSED */ static void fdeject(struct fdctlr *fdc, int unit) { struct fdunit *un; ASSERT(fdc->c_un->un_unit_no == unit); un = fdc->c_un; FDERRPRINT(FDEP_L1, FDEM_EJEC, (C, "fdeject\n")); /* * assume delay of function calling sufficient settling time * eject line is NOT driven by inverter so it is true low */ switch (fdc->c_fdtype & FDCTYPE_AUXIOMASK) { case FDCTYPE_MACHIO: set_auxioreg(AUX_EJECT, 0); drv_usecwait(2); set_auxioreg(AUX_EJECT, 1); break; case FDCTYPE_SLAVIO: if (!(Dor(fdc) & MOTEN(unit))) { /* LINTED */ Set_dor(fdc, MOTEN(unit), 1); } drv_usecwait(2); /* just to settle */ /* LINTED */ Set_dor(fdc, EJECT, 1); drv_usecwait(2); /* LINTED */ Set_dor(fdc, EJECT, 0); break; case FDCTYPE_CHEERIO: if (!(Dor(fdc) & MOTEN(unit))) { /* LINTED */ Set_dor(fdc, MOTEN(unit), 1); } drv_usecwait(2); /* just to settle */ /* LINTED */ Set_dor(fdc, EJECT_DMA, 1); drv_usecwait(2); /* LINTED */ Set_dor(fdc, EJECT_DMA, 0); break; } /* * XXX set ejected state? */ un->un_ejected = 1; } /* ARGSUSED */ static int fdsense_chng(struct fdctlr *fdc, int unit) { int changed = 0; FDERRPRINT(FDEP_L1, FDEM_SCHG, (C, "fdsense_chng:start\n")); ASSERT(fdc->c_un->un_unit_no == unit); /* * Do not turn on the motor of a pollable drive */ if (fd_pollable) { FDERRPRINT(FDEP_L1, FDEM_SCHG, (C, "pollable: don't turn on motor\n")); /* * Invert the sense of the DSKCHG for pollable drives */ if (Dir(fdc) & DSKCHG) changed = 0; else changed = 1; return (changed); } switch (fdc->c_fdtype & FDCTYPE_AUXIOMASK) { case FDCTYPE_MACHIO: if (*fdc->c_auxiova & AUX_DISKCHG) changed = 1; break; case FDCTYPE_SB: case FDCTYPE_SLAVIO: case FDCTYPE_CHEERIO: if (!(Dor(fdc) & MOTEN(unit))) { /* LINTED */ Set_dor(fdc, MOTEN(unit), 1); } drv_usecwait(2); /* just to settle */ if (Dir(fdc) & DSKCHG) changed = 1; break; } FDERRPRINT(FDEP_L1, FDEM_SCHG, (C, "fdsense_chng:end\n")); return (changed); } /* * if it can read a valid label it does so, else it will use a * default. If it can`t read the diskette - that is an error. * * RETURNS: 0 for ok - meaning that it could at least read the device, * !0 for error XXX TBD NYD error codes * * - called with the low level lock held */ static int fdgetlabel(struct fdctlr *fdc, int unit) { struct dk_label *label = NULL; struct fdunit *un; short *sp; short count; short xsum; /* checksum */ int i, tries; int err = 0; short oldlvl; FDERRPRINT(FDEP_L1, FDEM_GETL, (C, "fdgetlabel: unit %d\n", unit)); un = fdc->c_un; un->un_flags &= ~(FDUNIT_UNLABELED); ASSERT(fdc->c_un->un_unit_no == unit); /* Do not print errors since this is a private cmd */ oldlvl = fderrlevel; fderrlevel = FDEP_L4; label = (struct dk_label *) kmem_zalloc(sizeof (struct dk_label), KM_SLEEP); /* * try different characteristics (ie densities) by attempting to read * from the diskette. The diskette may not be present or * is unformatted. * * First, the last sector of the first track is read. If this * passes, attempt to read the last sector + 1 of the first track. * For example, for a high density diskette, sector 18 is read. If * the diskette is high density, this will pass. Next, try to * read sector 19 of the first track. This should fail. If it * passes, this is not a high density diskette. Finally, read * the first sector which should contain a label. * * if un->un_curfdtype is -1 then the current characteristics * were set by FDIOSCHAR and need to try it as well as everything * in the table */ if (un->un_curfdtype == -1) { tries = nfdtypes+1; FDERRPRINT(FDEP_L1, FDEM_GETL, (C, "fdgetl: un_curfdtype is -1\n")); } else { tries = nfdtypes; /* Always start with the highest density (1.7MB) */ un->un_curfdtype = 0; *(un->un_chars) = fdtypes[un->un_curfdtype]; } FDERRPRINT(FDEP_L1, FDEM_GETL, (C, "fdgetl: no. of tries %d\n", tries)); FDERRPRINT(FDEP_L1, FDEM_GETL, (C, "fdgetl: no. of curfdtype %d\n", un->un_curfdtype)); for (i = 0; i < tries; i++) { FDERRPRINT(FDEP_L1, FDEM_GETL, (C, "fdgetl: trying %d\n", i)); if (!(err = fdrw(fdc, unit, FDREAD, 0, 0, un->un_chars->fdc_secptrack, (caddr_t)label, sizeof (struct dk_label))) && fdrw(fdc, unit, FDREAD, 0, 0, un->un_chars->fdc_secptrack + 1, (caddr_t)label, sizeof (struct dk_label)) && !(err = fdrw(fdc, unit, FDREAD, 0, 0, 1, (caddr_t)label, sizeof (struct dk_label)))) { FDERRPRINT(FDEP_L1, FDEM_GETL, (C, "fdgetl: succeeded\n")); break; } /* * try the next entry in the characteristics tbl * If curfdtype is -1, the nxt entry in tbl is 0 (the first). */ un->un_curfdtype = (un->un_curfdtype + 1) % nfdtypes; *(un->un_chars) = fdtypes[un->un_curfdtype]; } /* print errors again */ fderrlevel = oldlvl; /* Couldn't read anything */ if (err) { /* The default characteristics are high density (1.4MB) */ un->un_curfdtype = 1; *(un->un_chars) = fdtypes[un->un_curfdtype]; fdunpacklabel(&fdlbl_high_80, &un->un_label); FDERRPRINT(FDEP_L1, FDEM_GETL, (C, "fdgetl: Can't autosense diskette\n")); goto out; } FDERRPRINT(FDEP_L1, FDEM_GETL, (C, "fdgetl: fdtype=%d !!!\n", un->un_curfdtype)); FDERRPRINT(FDEP_L1, FDEM_GETL, (C, "fdgetl: rate=%d ssize=%d !!!\n", un->un_chars->fdc_transfer_rate, un->un_chars->fdc_sec_size)); /* * _something_ was read - look for unixtype label */ if (label->dkl_magic != DKL_MAGIC) { /* * The label isn't a unix label. However, the diskette * is formatted because we were able to read the first * cylinder. */ FDERRPRINT(FDEP_L1, FDEM_GETL, (C, "fdgetl: not unix label\n")); goto nolabel; } /* * Checksum the label */ count = sizeof (struct dk_label)/sizeof (short); sp = (short *)label; xsum = 0; while (count--) xsum ^= *sp++; /* should add up to 0 */ if (xsum) { /* * The checksum fails. However, the diskette is formatted * because we were able to read the first cylinder */ FDERRPRINT(FDEP_L1, FDEM_GETL, (C, "fdgetl: bad cksum\n")); goto nolabel; } /* * The diskette has a unix label with a correct checksum. * Copy the label into the unit structure */ un->un_label = *label; goto out; nolabel: /* * The diskette doesn't have a correct unix label, but it is formatted. * Use a default label according to the diskette's density * (mark default used) */ FDERRPRINT(FDEP_L1, FDEM_GETL, (C, "fdgetlabel: unit %d\n", unit)); un->un_flags |= FDUNIT_UNLABELED; switch (un->un_chars->fdc_secptrack) { case 9: fdunpacklabel(&fdlbl_low_80, &un->un_label); break; case 8: fdunpacklabel(&fdlbl_medium_80, &un->un_label); break; case 18: fdunpacklabel(&fdlbl_high_80, &un->un_label); break; case 21: fdunpacklabel(&fdlbl_high_21, &un->un_label); break; default: fdunpacklabel(&fdlbl_high_80, &un->un_label); break; } out: if (label != NULL) kmem_free((caddr_t)label, sizeof (struct dk_label)); return (err); } /* * fdrw- used only for reading labels and for DKIOCSVTOC ioctl * which reads the 1 sector. */ static int fdrw(struct fdctlr *fdc, int unit, int rw, int cyl, int head, int sector, caddr_t bufp, uint_t len) { struct fdcsb *csb; struct fd_char *ch; int cmdresult = 0; caddr_t dma_addr; size_t real_length; int res; ddi_device_acc_attr_t attr; ddi_acc_handle_t mem_handle = NULL; FDERRPRINT(FDEP_L1, FDEM_RW, (C, "fdrw\n")); ASSERT(fdc->c_un->un_unit_no == unit); CHECK_AND_WAIT_FD_STATE_SUSPENDED(fdc); if (fdc->c_un->un_state == FD_STATE_STOPPED) { mutex_exit(&fdc->c_lolock); if ((pm_raise_power(fdc->c_dip, 0, PM_LEVEL_ON)) != DDI_SUCCESS) { FDERRPRINT(FDEP_L1, FDEM_PWR, (C, "Power change \ failed. \n")); mutex_enter(&fdc->c_lolock); return (EIO); } mutex_enter(&fdc->c_lolock); } fdgetcsb(fdc); csb = &fdc->c_csb; ch = fdc->c_un->un_chars; if (rw == FDREAD) { if (fdc->c_fdtype & FDCTYPE_TCBUG) { /* * kludge for lack of Multitrack functionality */ csb->csb_cmds[0] = SK + FDRAW_RDCMD; } else csb->csb_cmds[0] = MT + SK + FDRAW_RDCMD; } else { /* write */ if (fdc->c_fdtype & FDCTYPE_TCBUG) { /* * kludge for lack of Multitrack functionality */ csb->csb_cmds[0] = FDRAW_WRCMD; } else csb->csb_cmds[0] = MT + FDRAW_WRCMD; } if (rw == FDREAD) fdc->c_csb.csb_read = CSB_READ; else fdc->c_csb.csb_read = CSB_WRITE; /* always or in MFM bit */ csb->csb_cmds[0] |= MFM; csb->csb_cmds[1] = (uchar_t)(unit | ((head & 0x1) << 2)); if (fdc->c_fdtype & FDCTYPE_SB) csb->csb_cmds[1] |= IPS; csb->csb_cmds[2] = (uchar_t)cyl; csb->csb_cmds[3] = (uchar_t)head; csb->csb_cmds[4] = (uchar_t)sector; csb->csb_cmds[5] = ch->fdc_medium ? 3 : 2; /* sector size code */ /* * kludge for end-of-cylinder error. */ if (fdc->c_fdtype & FDCTYPE_TCBUG) csb->csb_cmds[6] = sector + (len / ch->fdc_sec_size) - 1; else csb->csb_cmds[6] = (uchar_t)max(fdc->c_un->un_chars->fdc_secptrack, sector); csb->csb_len = len; csb->csb_cmds[7] = GPLN; csb->csb_cmds[8] = SSSDTL; csb->csb_ncmds = NCBRW; csb->csb_len = len; csb->csb_maxretry = 2; csb->csb_retrys = 0; bzero(csb->csb_rslt, NRBRW); csb->csb_nrslts = NRBRW; csb->csb_opflags = CSB_OFXFEROPS | CSB_OFTIMEIT; /* If platform supports DMA, set up DMA resources */ if (fdc->c_fdtype & FDCTYPE_DMA) { mutex_enter(&fdc->c_hilock); attr.devacc_attr_version = DDI_DEVICE_ATTR_V0; attr.devacc_attr_endian_flags = DDI_STRUCTURE_BE_ACC; attr.devacc_attr_dataorder = DDI_STRICTORDER_ACC; res = ddi_dma_mem_alloc(fdc->c_dmahandle, len, &attr, DDI_DMA_STREAMING, DDI_DMA_DONTWAIT, 0, &dma_addr, &real_length, &mem_handle); if (res != DDI_SUCCESS) { FDERRPRINT(FDEP_L1, FDEM_RW, (C, "fdrw: dma mem alloc failed\n")); fdretcsb(fdc); mutex_exit(&fdc->c_hilock); return (EIO); } FDERRPRINT(FDEP_L1, FDEM_RW, (C, "fdrw: allocated memory")); if (fdstart_dma(fdc, dma_addr, len) != 0) { fdretcsb(fdc); ddi_dma_mem_free(&mem_handle); mutex_exit(&fdc->c_hilock); return (-1); } /* * If the command is a write, copy the data to be written to * dma_addr. */ if (fdc->c_csb.csb_read == CSB_WRITE) { bcopy((char *)bufp, (char *)dma_addr, len); } csb->csb_addr = dma_addr; mutex_exit(&fdc->c_hilock); } else { csb->csb_addr = bufp; } FDERRPRINT(FDEP_L1, FDEM_RW, (C, "fdrw: call fdexec\n")); if (fdexec(fdc, FDXC_SLEEP | FDXC_CHECKCHG) != 0) { fdretcsb(fdc); if (mem_handle) ddi_dma_mem_free(&mem_handle); return (EIO); } FDERRPRINT(FDEP_L1, FDEM_RW, (C, "fdrw: fdexec returned\n")); /* * if DMA was used and the command was a read * copy the results into bufp */ if (fdc->c_fdtype & FDCTYPE_DMA) { if (fdc->c_csb.csb_read == CSB_READ) { bcopy((char *)dma_addr, (char *)bufp, len); } ddi_dma_mem_free(&mem_handle); } if (csb->csb_cmdstat) cmdresult = EIO; /* XXX TBD NYD for now */ fdretcsb(fdc); return (cmdresult); } /* * fdunpacklabel * this unpacks a (packed) struct dk_label into a standard dk_label. */ static void fdunpacklabel(struct packed_label *from, struct dk_label *to) { FDERRPRINT(FDEP_L1, FDEM_PACK, (C, "fdpacklabel\n")); bzero((caddr_t)to, sizeof (*to)); bcopy((caddr_t)&from->dkl_vname, (caddr_t)to->dkl_asciilabel, sizeof (to->dkl_asciilabel)); to->dkl_rpm = from->dkl_rpm; /* rotations per minute */ to->dkl_pcyl = from->dkl_pcyl; /* # physical cylinders */ to->dkl_apc = from->dkl_apc; /* alternates per cylinder */ to->dkl_intrlv = from->dkl_intrlv; /* interleave factor */ to->dkl_ncyl = from->dkl_ncyl; /* # of data cylinders */ to->dkl_acyl = from->dkl_acyl; /* # of alternate cylinders */ to->dkl_nhead = from->dkl_nhead; /* # of heads in this partition */ to->dkl_nsect = from->dkl_nsect; /* # of 512 byte sectors per track */ /* logical partitions */ bcopy((caddr_t)from->dkl_map, (caddr_t)to->dkl_map, sizeof (struct dk_map32) * NDKMAP); to->dkl_vtoc = from->dkl_vtoc; } static struct fdctlr * fd_getctlr(dev_t dev) { struct fdctlr *fdc = fdctlrs; int ctlr = FDCTLR(dev); while (fdc) { if (ddi_get_instance(fdc->c_dip) == ctlr) return (fdc); fdc = fdc->c_next; } return (fdc); } static int fd_unit_is_open(struct fdunit *un) { int i; for (i = 0; i < NDKMAP; i++) if (un->un_lyropen[i]) return (1); for (i = 0; i < OTYPCNT - 1; i++) if (un->un_regopen[i]) return (1); return (0); } /* * Return the a vtoc structure in *vtoc. * The vtoc is built from information in * the diskette's label. */ static void fd_build_user_vtoc(struct fdunit *un, struct vtoc *vtoc) { int i; int nblks; /* DEV_BSIZE sectors per cylinder */ struct dk_map2 *lpart; struct dk_map32 *lmap; struct partition *vpart; bzero(vtoc, sizeof (struct vtoc)); /* Initialize info. needed by mboot. (unsupported) */ vtoc->v_bootinfo[0] = un->un_label.dkl_vtoc.v_bootinfo[0]; vtoc->v_bootinfo[1] = un->un_label.dkl_vtoc.v_bootinfo[1]; vtoc->v_bootinfo[2] = un->un_label.dkl_vtoc.v_bootinfo[2]; /* Fill in vtoc sanity and version information */ vtoc->v_sanity = un->un_label.dkl_vtoc.v_sanity; vtoc->v_version = un->un_label.dkl_vtoc.v_version; /* Copy the volume name */ bcopy(un->un_label.dkl_vtoc.v_volume, vtoc->v_volume, LEN_DKL_VVOL); /* * The dk_map32 structure is based on DEV_BSIZE byte blocks. * However, medium density diskettes have 1024 byte blocks. * The number of sectors per partition listed in the dk_map32 structure * accounts for this by multiplying the number of 1024 byte * blocks by 2. (See the packed_label initializations.) The * 1024 byte block size can not be listed for medium density * diskettes because the kernel is hard coded for DEV_BSIZE * blocks. */ vtoc->v_sectorsz = DEV_BSIZE; vtoc->v_nparts = un->un_label.dkl_vtoc.v_nparts; /* Copy the reserved space */ bcopy(un->un_label.dkl_vtoc.v_reserved, vtoc->v_reserved, sizeof (un->un_label.dkl_vtoc.v_reserved)); /* * Convert partitioning information. * * Note the conversion from starting cylinder number * to starting sector number. */ lmap = un->un_label.dkl_map; lpart = un->un_label.dkl_vtoc.v_part; vpart = vtoc->v_part; nblks = (un->un_chars->fdc_nhead * un->un_chars->fdc_secptrack * un->un_chars->fdc_sec_size) / DEV_BSIZE; for (i = 0; i < V_NUMPAR; i++) { vpart->p_tag = lpart->p_tag; vpart->p_flag = lpart->p_flag; vpart->p_start = lmap->dkl_cylno * nblks; vpart->p_size = lmap->dkl_nblk; lmap++; lpart++; vpart++; } /* Initialize timestamp and label */ bcopy(un->un_label.dkl_vtoc.v_timestamp, vtoc->timestamp, sizeof (vtoc->timestamp)); bcopy(un->un_label.dkl_asciilabel, vtoc->v_asciilabel, LEN_DKL_ASCII); } /* * Build a label out of a vtoc structure. */ static int fd_build_label_vtoc(struct fdunit *un, struct vtoc *vtoc) { struct dk_map32 *lmap; struct dk_map2 *lpart; struct partition *vpart; int nblks; /* no. blocks per cylinder */ int ncyl; int i; short sum, *sp; /* Sanity-check the vtoc */ if ((vtoc->v_sanity != VTOC_SANE) || (vtoc->v_nparts > NDKMAP) || (vtoc->v_nparts <= 0)) { FDERRPRINT(FDEP_L1, FDEM_IOCT, (C, "fd_build_label: sanity check on vtoc failed\n")); return (EINVAL); } nblks = (un->un_chars->fdc_nhead * un->un_chars->fdc_secptrack * un->un_chars->fdc_sec_size) / DEV_BSIZE; vpart = vtoc->v_part; /* * Check the partition information in the vtoc. The starting sectors * must lie along partition boundaries. (NDKMAP entries are checked * to ensure that the unused entries are set to 0 if vtoc->v_nparts * is less than NDKMAP) */ for (i = 0; i < NDKMAP; i++) { if ((vpart->p_start % nblks) != 0) { return (EINVAL); } ncyl = vpart->p_start % nblks; ncyl += vpart->p_size % nblks; if ((vpart->p_size % nblks) != 0) ncyl++; if (ncyl > un->un_chars->fdc_ncyl) { return (EINVAL); } vpart++; } /* * reinitialize the existing label */ bzero(&un->un_label, sizeof (un->un_label)); /* Put appropriate vtoc structure fields into the disk label */ un->un_label.dkl_vtoc.v_bootinfo[0] = (uint32_t)vtoc->v_bootinfo[0]; un->un_label.dkl_vtoc.v_bootinfo[1] = (uint32_t)vtoc->v_bootinfo[1]; un->un_label.dkl_vtoc.v_bootinfo[2] = (uint32_t)vtoc->v_bootinfo[2]; un->un_label.dkl_vtoc.v_sanity = vtoc->v_sanity; un->un_label.dkl_vtoc.v_version = vtoc->v_version; bcopy(vtoc->v_volume, un->un_label.dkl_vtoc.v_volume, LEN_DKL_VVOL); un->un_label.dkl_vtoc.v_nparts = vtoc->v_nparts; bcopy(vtoc->v_reserved, un->un_label.dkl_vtoc.v_reserved, sizeof (un->un_label.dkl_vtoc.v_reserved)); /* * Initialize cylinder information in the label. * Note the conversion from starting sector number * to starting cylinder number. * Return error if division results in a remainder. */ lmap = un->un_label.dkl_map; lpart = un->un_label.dkl_vtoc.v_part; vpart = vtoc->v_part; for (i = 0; i < (int)vtoc->v_nparts; i++) { lpart->p_tag = vtoc->v_part[i].p_tag; lpart->p_flag = vtoc->v_part[i].p_flag; lmap->dkl_cylno = vpart->p_start / nblks; lmap->dkl_nblk = vpart->p_size; lmap++; lpart++; vpart++; } /* Copy the timestamp and ascii label */ for (i = 0; i < NDKMAP; i++) { un->un_label.dkl_vtoc.v_timestamp[i] = vtoc->timestamp[i]; } bcopy(vtoc->v_asciilabel, un->un_label.dkl_asciilabel, LEN_DKL_ASCII); FDERRPRINT(FDEP_L1, FDEM_IOCT, (C, "fd_build_label: asciilabel %s\n", un->un_label.dkl_asciilabel)); /* Initialize the magic number */ un->un_label.dkl_magic = DKL_MAGIC; un->un_label.dkl_pcyl = un->un_chars->fdc_ncyl; /* * The fdc_secptrack filed of the fd_char structure is the number * of sectors per track where the sectors are fdc_sec_size. The * dkl_nsect field of the dk_label structure is the number of * 512 (DEVBSIZE) byte sectors per track. */ un->un_label.dkl_nsect = (un->un_chars->fdc_secptrack * un->un_chars->fdc_sec_size) / DEV_BSIZE; un->un_label.dkl_ncyl = un->un_label.dkl_pcyl; un->un_label.dkl_nhead = un->un_chars->fdc_nhead; un->un_label.dkl_rpm = un->un_chars->fdc_medium ? 360 : 300; un->un_label.dkl_intrlv = 1; /* Create the checksum */ sum = 0; un->un_label.dkl_cksum = 0; sp = (short *)&un->un_label; i = sizeof (struct dk_label)/sizeof (short); while (i--) { sum ^= *sp++; } un->un_label.dkl_cksum = sum; return (0); } /* * Check for auxio register node */ int fd_isauxiodip(dev_info_t *dip) { if (strcmp(ddi_get_name(dip), "auxio") == 0 || strcmp(ddi_get_name(dip), "auxiliary-io") == 0) { return (1); } return (0); } /* * Search for auxio register node, then for address property */ caddr_t fd_getauxiova(dev_info_t *dip) { dev_info_t *auxdip; caddr_t addr; /* * Search sibling list, which happens to be safe inside attach */ auxdip = ddi_get_child(ddi_get_parent(dip)); while (auxdip) { if (fd_isauxiodip(auxdip)) break; auxdip = ddi_get_next_sibling(auxdip); } if (auxdip == NULL) return (NULL); addr = (caddr_t)(caddr32_t)ddi_getprop(DDI_DEV_T_ANY, auxdip, DDI_PROP_DONTPASS, "address", 0); /* * The device tree on some sun4c machines (SS1+) incorrectly * reports the "auxiliary-io" as being word wide at an * aligned address rather than byte wide at an offset of 3. * Here we correct for this .. */ if (strcmp(ddi_get_name(auxdip), "auxiliary-io") == 0 && (((int)addr & 3) == 0)) addr += 3; return (addr); } /* * set_rotational speed * 300 rpm for high and low density. * 360 rpm for medium density. * for now, we assume that 3rd density is supported only for Sun4M, * not for Clones. (else we would have to check for 82077, and do * specific things for the MEDIUM_DENSITY BIT for clones. * this code should not break CLONES. * * REMARK: there is a SOny requirement, to deselect the drive then * select it again after the medium density change, since the * leading edge of the select line latches the rotational Speed. * then after that, we have to wait 500 ms for the rotation to * stabilize. * */ static void set_rotational_speed(struct fdctlr *fdc, int unit) { int check; int is_medium; ASSERT(fdc->c_un->un_unit_no == unit); /* * if we do not have a Sun4m, medium density is not supported. */ if (fdc->c_fdtype & FDCTYPE_MACHIO) return; /* * if FDUNIT_SET_SPEED is set, set the speed. * else, * if there is a change, do it, if not leave it alone. * there is a change if un->un_chars->fdc_medium does not match * un->un_flags & FDUNIT_MEDIUM * un->un_flags & FDUNIT_MEDIUM specifies the last setting. * un->un_chars->fdc_medium specifies next setting. * if there is a change, wait 500ms according to Sony spec. */ is_medium = fdc->c_un->un_chars->fdc_medium; if (fdc->c_un->un_flags & FDUNIT_SET_SPEED) { check = 1; } else { check = is_medium ^ ((fdc->c_un->un_flags & FDUNIT_MEDIUM) ? 1 : 0); /* Set the un_flags if necessary */ if (check) fdc->c_un->un_flags ^= FDUNIT_MEDIUM; } fdc->c_un->un_flags &= ~FDUNIT_SET_SPEED; if (check) { fdselect(fdc, unit, 0); drv_usecwait(5); if ((fdc->c_fdtype & FDCTYPE_AUXIOMASK) == FDCTYPE_SLAVIO) { Set_dor(fdc, MEDIUM_DENSITY, is_medium); } if ((fdc->c_fdtype & FDCTYPE_AUXIOMASK) == FDCTYPE_CHEERIO) { if (is_medium) { Set_auxio(fdc, AUX_MEDIUM_DENSITY); } else { Set_auxio(fdc, AUX_HIGH_DENSITY); } } if (is_medium) { drv_usecwait(5); } fdselect(fdc, unit, 1); /* Sony requirement */ FDERRPRINT(FDEP_L1, FDEM_EXEC, (C, "rotation:medium\n")); drv_usecwait(500000); } } static void fd_media_watch(void *arg) { dev_t dev; struct fdunit *un; struct fdctlr *fdc; int unit; dev = (dev_t)arg; fdc = fd_getctlr(dev); unit = fdc->c_un->un_unit_no; un = fdc->c_un; mutex_enter(&fdc->c_lolock); if (un->un_media_timeout_id == 0) { /* * Untimeout is about to be called. * Don't call fd_get_media_state again */ mutex_exit(&fdc->c_lolock); return; } un->un_media_state = fd_get_media_state(fdc, unit); cv_broadcast(&fdc->c_statecv); mutex_exit(&fdc->c_lolock); if (un->un_media_timeout) { un->un_media_timeout_id = timeout(fd_media_watch, (void *)(ulong_t)dev, un->un_media_timeout); } } enum dkio_state fd_get_media_state(struct fdctlr *fdc, int unit) { enum dkio_state state; ASSERT(fdc->c_un->un_unit_no == unit); if (fdsense_chng(fdc, unit)) { /* check disk only if DSKCHG "high" */ if (fdcheckdisk(fdc, unit)) { state = DKIO_EJECTED; } else { state = DKIO_INSERTED; } } else { state = DKIO_INSERTED; } return (state); } static int fd_check_media(dev_t dev, enum dkio_state state) { struct fdunit *un; struct fdctlr *fdc; int unit; FDERRPRINT(FDEP_L1, FDEM_RW, (C, "fd_check_media: start\n")); fdc = fd_getctlr(dev); unit = fdc->c_un->un_unit_no; un = fdc->c_un; mutex_enter(&fdc->c_lolock); CHECK_AND_WAIT_FD_STATE_SUSPENDED(fdc); if (fdc->c_un->un_state == FD_STATE_STOPPED) { mutex_exit(&fdc->c_lolock); if ((pm_raise_power(fdc->c_dip, 0, PM_LEVEL_ON)) != DDI_SUCCESS) { FDERRPRINT(FDEP_L1, FDEM_PWR, (C, "Power change \ failed. \n")); (void) pm_idle_component(fdc->c_dip, 0); return (EIO); } mutex_enter(&fdc->c_lolock); } un->un_media_state = fd_get_media_state(fdc, unit); /* turn on timeout */ un->un_media_timeout = drv_usectohz(fd_check_media_time); un->un_media_timeout_id = timeout(fd_media_watch, (void *)(ulong_t)dev, un->un_media_timeout); while (un->un_media_state == state) { if (cv_wait_sig(&fdc->c_statecv, &fdc->c_lolock) == 0) { un->un_media_timeout = 0; mutex_exit(&fdc->c_lolock); return (EINTR); } } if (un->un_media_timeout_id) { timeout_id_t timeid = un->un_media_timeout_id; un->un_media_timeout_id = 0; mutex_exit(&fdc->c_lolock); (void) untimeout(timeid); mutex_enter(&fdc->c_lolock); } if (un->un_media_state == DKIO_INSERTED) { if (fdgetlabel(fdc, unit)) { mutex_exit(&fdc->c_lolock); return (EIO); } } mutex_exit(&fdc->c_lolock); FDERRPRINT(FDEP_L1, FDEM_RW, (C, "fd_check_media: end\n")); return (0); } /* * fd_get_media_info : * Collects medium information for * DKIOCGMEDIAINFO ioctl. */ static int fd_get_media_info(struct fdunit *un, caddr_t buf, int flag) { struct dk_minfo media_info; int err = 0; media_info.dki_media_type = DK_FLOPPY; media_info.dki_lbsize = un->un_chars->fdc_sec_size; media_info.dki_capacity = un->un_chars->fdc_ncyl * un->un_chars->fdc_secptrack * un->un_chars->fdc_nhead; if (ddi_copyout((caddr_t)&media_info, buf, sizeof (struct dk_minfo), flag)) err = EFAULT; return (err); } /* * fd_power : * Power entry point of fd driver. */ static int fd_power(dev_info_t *dip, int component, int level) { struct fdctlr *fdc; int instance; int rval; if ((level < PM_LEVEL_OFF) || (level > PM_LEVEL_ON) || (component != 0)) { return (DDI_FAILURE); } instance = ddi_get_instance(dip); fdc = fd_getctlr(instance << FDINSTSHIFT); if (fdc->c_un == NULL) return (DDI_FAILURE); if (level == PM_LEVEL_OFF) { rval = fd_pm_lower_power(fdc); } if (level == PM_LEVEL_ON) { rval = fd_pm_raise_power(fdc); } return (rval); } /* * fd_pm_lower_power : * This function is called only during pm suspend. At this point, * the power management framework thinks the device is idle for * long enough to go to a low power mode. If the device is busy, * then this function returns DDI_FAILURE. */ static int fd_pm_lower_power(struct fdctlr *fdc) { mutex_enter(&fdc->c_lolock); if ((fdc->c_un->un_state == FD_STATE_SUSPENDED) || (fdc->c_un->un_state == FD_STATE_STOPPED)) { mutex_exit(&fdc->c_lolock); return (DDI_SUCCESS); } FDERRPRINT(FDEP_L1, FDEM_PWR, (C, "fd_pm_lower_power called\n")); /* if the device is busy then we fail the lower power request */ if (fdc->c_flags & FDCFLG_BUSY) { FDERRPRINT(FDEP_L2, FDEM_PWR, (C, "fd_pm_lower_power : \ controller is busy.\n")); mutex_exit(&fdc->c_lolock); return (DDI_FAILURE); } fdc->c_un->un_state = FD_STATE_STOPPED; mutex_exit(&fdc->c_lolock); return (DDI_SUCCESS); } /* * fd_pm_raise_power : * This function performs the necessary steps for resuming a * device, either from pm suspend or CPR. Here the controller * is reset, initialized and the state is set to FD_STATE_NORMAL. */ static int fd_pm_raise_power(struct fdctlr *fdc) { struct fdunit *un = fdc->c_un; int unit; FDERRPRINT(FDEP_L1, FDEM_PWR, (C, "fd_pm_raise_power called\n")); mutex_enter(&fdc->c_lolock); fdgetcsb(fdc); /* Reset the dma engine */ if (fdc->c_fdtype & FDCTYPE_DMA) { mutex_enter(&fdc->c_hilock); reset_dma_controller(fdc); set_dma_control_register(fdc, DCSR_INIT_BITS); mutex_exit(&fdc->c_hilock); } /* * Force a rotational speed set in the next * call to set_rotational_speed(). */ fdc->c_un->un_flags |= FDUNIT_SET_SPEED; /* Reset and configure the controller */ (void) fdreset(fdc); unit = fdc->c_un->un_unit_no; /* Recalibrate the drive */ if (fdrecalseek(fdc, unit, -1, 0) != 0) { FDERRPRINT(FDEP_L1, FDEM_PWR, (C, "raise_power : recalibrate \ failed\n")); fdretcsb(fdc); mutex_exit(&fdc->c_lolock); return (DDI_FAILURE); } /* Select the drive through the AUXIO registers */ fdselect(fdc, unit, 0); un->un_state = FD_STATE_NORMAL; fdretcsb(fdc); mutex_exit(&fdc->c_lolock); return (DDI_SUCCESS); } /* * create_pm_components : * creates the power management components for auto pm framework. */ static void create_pm_components(dev_info_t *dip) { char *un_pm_comp[] = { "NAME=spindle-motor", "0=off", "1=on"}; if (ddi_prop_update_string_array(DDI_DEV_T_NONE, dip, "pm-components", un_pm_comp, 3) == DDI_PROP_SUCCESS) { (void) pm_raise_power(dip, 0, PM_LEVEL_ON); } } /* * set_data_count_register(struct fdctlr *fdc, uint32_t count) * Set the data count in appropriate dma register. */ static void set_data_count_register(struct fdctlr *fdc, uint32_t count) { if (fdc->c_fdtype & FDCTYPE_CHEERIO) { struct cheerio_dma_reg *dma_reg; dma_reg = (struct cheerio_dma_reg *)fdc->c_dma_regs; ddi_put32(fdc->c_handlep_dma, &dma_reg->fdc_dbcr, count); } else if (fdc->c_fdtype & FDCTYPE_SB) { struct sb_dma_reg *dma_reg; count = count - 1; /* 8237 needs it */ dma_reg = (struct sb_dma_reg *)fdc->c_dma_regs; switch (fdc->sb_dma_channel) { case 0 : ddi_put16(fdc->c_handlep_dma, (ushort_t *)&dma_reg->sb_dma_regs[DMA_0WCNT], count & 0xFFFF); break; case 1 : ddi_put16(fdc->c_handlep_dma, (ushort_t *)&dma_reg->sb_dma_regs[DMA_1WCNT], count & 0xFFFF); break; case 2 : ddi_put16(fdc->c_handlep_dma, (ushort_t *)&dma_reg->sb_dma_regs[DMA_2WCNT], count & 0xFFFF); break; case 3 : ddi_put16(fdc->c_handlep_dma, (ushort_t *)&dma_reg->sb_dma_regs[DMA_3WCNT], count & 0xFFFF); break; default : FDERRPRINT(FDEP_L3, FDEM_SDMA, (C, "set_data_count: wrong channel %x\n", fdc->sb_dma_channel)); break; } } } /* * get_data_count_register(struct fdctlr *fdc) * Read the data count from appropriate dma register. */ static uint32_t get_data_count_register(struct fdctlr *fdc) { uint32_t retval = 0; if (fdc->c_fdtype & FDCTYPE_CHEERIO) { struct cheerio_dma_reg *dma_reg; dma_reg = (struct cheerio_dma_reg *)fdc->c_dma_regs; retval = ddi_get32(fdc->c_handlep_dma, &dma_reg->fdc_dbcr); } else if (fdc->c_fdtype & FDCTYPE_SB) { struct sb_dma_reg *dma_reg; dma_reg = (struct sb_dma_reg *)fdc->c_dma_regs; switch (fdc->sb_dma_channel) { case 0 : retval = ddi_get16(fdc->c_handlep_dma, (ushort_t *)&dma_reg->sb_dma_regs[DMA_0WCNT]); break; case 1 : retval = ddi_get16(fdc->c_handlep_dma, (ushort_t *)&dma_reg->sb_dma_regs[DMA_1WCNT]); break; case 2 : retval = ddi_get16(fdc->c_handlep_dma, (ushort_t *)&dma_reg->sb_dma_regs[DMA_2WCNT]); break; case 3 : retval = ddi_get16(fdc->c_handlep_dma, (ushort_t *)&dma_reg->sb_dma_regs[DMA_3WCNT]); break; default : FDERRPRINT(FDEP_L3, FDEM_SDMA, (C, "get_data_count: wrong channel %x\n", fdc->sb_dma_channel)); break; } retval = (uint32_t)((uint16_t)(retval +1)); } return (retval); } /* * reset_dma_controller(struct fdctlr *fdc) * Reset and initialize the dma controller. */ static void reset_dma_controller(struct fdctlr *fdc) { if (fdc->c_fdtype & FDCTYPE_CHEERIO) { struct cheerio_dma_reg *dma_reg; dma_reg = (struct cheerio_dma_reg *)fdc->c_dma_regs; ddi_put32(fdc->c_handlep_dma, &dma_reg->fdc_dcsr, DCSR_RESET); while (get_dma_control_register(fdc) & DCSR_CYC_PEND); ddi_put32(fdc->c_handlep_dma, &dma_reg->fdc_dcsr, 0); } else if (fdc->c_fdtype & FDCTYPE_SB) { struct sb_dma_reg *dma_reg; dma_reg = (struct sb_dma_reg *)fdc->c_dma_regs; ddi_put8(fdc->c_handlep_dma, &dma_reg->sb_dma_regs[DMAC1_MASK], (fdc->sb_dma_channel & 0x3)); } } /* * Get the DMA control register for CHEERIO. * For SouthBridge 8237 DMA controller, this register is not valid. * So, just return 0. */ static uint32_t get_dma_control_register(struct fdctlr *fdc) { uint32_t retval = 0; if (fdc->c_fdtype & FDCTYPE_CHEERIO) { struct cheerio_dma_reg *dma_reg; dma_reg = (struct cheerio_dma_reg *)fdc->c_dma_regs; retval = ddi_get32(fdc->c_handlep_dma, &dma_reg->fdc_dcsr); } return (retval); } /* * set_data_address_register(struct fdctlr *fdc) * Set the data address in appropriate dma register. */ static void set_data_address_register(struct fdctlr *fdc, uint32_t address) { if (fdc->c_fdtype & FDCTYPE_CHEERIO) { struct cheerio_dma_reg *dma_reg; dma_reg = (struct cheerio_dma_reg *)fdc->c_dma_regs; ddi_put32(fdc->c_handlep_dma, &dma_reg->fdc_dacr, address); } else if (fdc->c_fdtype & FDCTYPE_SB) { struct sb_dma_reg *dma_reg; dma_reg = (struct sb_dma_reg *)fdc->c_dma_regs; switch (fdc->sb_dma_channel) { case 0 : ddi_put8(fdc->c_handlep_dma, &dma_reg->sb_dma_regs[DMA_0PAGE], (address & 0xFF0000) >>16); ddi_put8(fdc->c_handlep_dma, &dma_reg->sb_dma_regs[DMA_0HPG], (address & 0xFF000000) >>24); ddi_put16(fdc->c_handlep_dma, (ushort_t *)&dma_reg->sb_dma_regs[DMA_0ADR], address & 0xFFFF); break; case 1 : ddi_put8(fdc->c_handlep_dma, &dma_reg->sb_dma_regs[DMA_1PAGE], (address & 0xFF0000) >>16); ddi_put8(fdc->c_handlep_dma, &dma_reg->sb_dma_regs[DMA_1HPG], (address & 0xFF000000) >>24); ddi_put16(fdc->c_handlep_dma, (ushort_t *)&dma_reg->sb_dma_regs[DMA_1ADR], address & 0xFFFF); break; case 2 : ddi_put8(fdc->c_handlep_dma, &dma_reg->sb_dma_regs[DMA_2PAGE], (address & 0xFF0000) >>16); ddi_put8(fdc->c_handlep_dma, &dma_reg->sb_dma_regs[DMA_2HPG], (address & 0xFF000000) >>24); ddi_put16(fdc->c_handlep_dma, (ushort_t *)&dma_reg->sb_dma_regs[DMA_2ADR], address & 0xFFFF); break; case 3 : ddi_put8(fdc->c_handlep_dma, &dma_reg->sb_dma_regs[DMA_3PAGE], (address & 0xFF0000) >>16); ddi_put8(fdc->c_handlep_dma, &dma_reg->sb_dma_regs[DMA_3HPG], (address & 0xFF000000) >>24); ddi_put16(fdc->c_handlep_dma, (ushort_t *)&dma_reg->sb_dma_regs[DMA_3ADR], address & 0xFFFF); break; default : FDERRPRINT(FDEP_L3, FDEM_SDMA, (C, "set_data_address: wrong channel %x\n", fdc->sb_dma_channel)); break; } } } /* * set_dma_mode(struct fdctlr *fdc, int val) * Set the appropriate dma direction and registers. */ static void set_dma_mode(struct fdctlr *fdc, int val) { if (fdc->c_fdtype & FDCTYPE_CHEERIO) { struct cheerio_dma_reg *dma_reg; dma_reg = (struct cheerio_dma_reg *)fdc->c_dma_regs; if (val == CSB_READ) ddi_put32(fdc->c_handlep_dma, &dma_reg->fdc_dcsr, DCSR_INIT_BITS|DCSR_WRITE); else ddi_put32(fdc->c_handlep_dma, &dma_reg->fdc_dcsr, DCSR_INIT_BITS); } else if (fdc->c_fdtype & FDCTYPE_SB) { uint8_t mode_reg_val, chn_mask; struct sb_dma_reg *dma_reg; dma_reg = (struct sb_dma_reg *)fdc->c_dma_regs; if (val == CSB_READ) { mode_reg_val = fdc->sb_dma_channel | DMAMODE_READ | DMAMODE_SINGLE; } else { /* Read operation */ mode_reg_val = fdc->sb_dma_channel | DMAMODE_WRITE | DMAMODE_SINGLE; } ddi_put8(fdc->c_handlep_dma, &dma_reg->sb_dma_regs[DMAC1_MODE], mode_reg_val); chn_mask = 1 << (fdc->sb_dma_channel & 0x3); ddi_put8(fdc->c_handlep_dma, &dma_reg->sb_dma_regs[DMAC1_ALLMASK], ~chn_mask); fdc->sb_dma_lock = 1; } } /* * This function is valid only for CHEERIO/RIO based * controllers. The control register for the dma channel * is initialized by this function. */ static void set_dma_control_register(struct fdctlr *fdc, uint32_t val) { if (fdc->c_fdtype & FDCTYPE_CHEERIO) { struct cheerio_dma_reg *dma_reg; dma_reg = (struct cheerio_dma_reg *)fdc->c_dma_regs; ddi_put32(fdc->c_handlep_dma, &dma_reg->fdc_dcsr, val); } } static void release_sb_dma(struct fdctlr *fdc) { struct sb_dma_reg *dma_reg; dma_reg = (struct sb_dma_reg *)fdc->c_dma_regs; /* Unmask all the channels to release the DMA controller */ ddi_put8(fdc->c_handlep_dma, &dma_reg->sb_dma_regs[DMAC1_ALLMASK], NULL); fdc->sb_dma_lock = 0; } static void quiesce_fd_interrupt(struct fdctlr *fdc) { /* * The following code is put here to take care of HW problem. * The HW problem is as follows: * * After poweron the Southbridge floppy controller asserts the * interrupt in tristate. This causes continuous interrupts to * be generated. * Until the Hardware is FIXED we will have to use the following code * to set the interrupt line to proper state after poweron. */ if (fdc->c_fdtype & FDCTYPE_SB) { ddi_put8(fdc->c_handlep_cont, ((uint8_t *)fdc->c_dor), 0x0); drv_usecwait(200); ddi_put8(fdc->c_handlep_cont, ((uint8_t *)fdc->c_dor), 0xC); drv_usecwait(200); Set_Fifo(fdc, 0xE6); drv_usecwait(200); } }