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drivers/block/floppy.c
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/* * linux/drivers/block/floppy.c * * Copyright (C) 1991, 1992 Linus Torvalds * Copyright (C) 1993, 1994 Alain Knaff * Copyright (C) 1998 Alan Cox */ |
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/* * 02.12.91 - Changed to static variables to indicate need for reset * and recalibrate. This makes some things easier (output_byte reset * checking etc), and means less interrupt jumping in case of errors, * so the code is hopefully easier to understand. */ /* * This file is certainly a mess. I've tried my best to get it working, * but I don't like programming floppies, and I have only one anyway. * Urgel. I should check for more errors, and do more graceful error * recovery. Seems there are problems with several drives. I've tried to * correct them. No promises. */ /* * As with hd.c, all routines within this file can (and will) be called * by interrupts, so extreme caution is needed. A hardware interrupt * handler may not sleep, or a kernel panic will happen. Thus I cannot * call "floppy-on" directly, but have to set a special timer interrupt * etc. */ /* * 28.02.92 - made track-buffering routines, based on the routines written * by entropy@wintermute.wpi.edu (Lawrence Foard). Linus. */ /* * Automatic floppy-detection and formatting written by Werner Almesberger * (almesber@nessie.cs.id.ethz.ch), who also corrected some problems with * the floppy-change signal detection. */ /* * 1992/7/22 -- Hennus Bergman: Added better error reporting, fixed * FDC data overrun bug, added some preliminary stuff for vertical * recording support. * * 1992/9/17: Added DMA allocation & DMA functions. -- hhb. * * TODO: Errors are still not counted properly. */ /* 1992/9/20 * Modifications for ``Sector Shifting'' by Rob Hooft (hooft@chem.ruu.nl) * modeled after the freeware MS-DOS program fdformat/88 V1.8 by * Christoph H. Hochst\"atter. * I have fixed the shift values to the ones I always use. Maybe a new * ioctl() should be created to be able to modify them. * There is a bug in the driver that makes it impossible to format a * floppy as the first thing after bootup. */ /* * 1993/4/29 -- Linus -- cleaned up the timer handling in the kernel, and * this helped the floppy driver as well. Much cleaner, and still seems to * work. */ /* 1994/6/24 --bbroad-- added the floppy table entries and made * minor modifications to allow 2.88 floppies to be run. */ /* 1994/7/13 -- Paul Vojta -- modified the probing code to allow three or more * disk types. */ /* * 1994/8/8 -- Alain Knaff -- Switched to fdpatch driver: Support for bigger * format bug fixes, but unfortunately some new bugs too... */ /* 1994/9/17 -- Koen Holtman -- added logging of physical floppy write * errors to allow safe writing by specialized programs. */ /* 1995/4/24 -- Dan Fandrich -- added support for Commodore 1581 3.5" disks * by defining bit 1 of the "stretch" parameter to mean put sectors on the * opposite side of the disk, leaving the sector IDs alone (i.e. Commodore's * drives are "upside-down"). */ /* * 1995/8/26 -- Andreas Busse -- added Mips support. */ /* * 1995/10/18 -- Ralf Baechle -- Portability cleanup; move machine dependent * features to asm/floppy.h. */ /* |
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* 1998/1/21 -- Richard Gooch <rgooch@atnf.csiro.au> -- devfs support */ /* |
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* 1998/05/07 -- Russell King -- More portability cleanups; moved definition of * interrupt and dma channel to asm/floppy.h. Cleaned up some formatting & * use of '0' for NULL. */ /* * 1998/06/07 -- Alan Cox -- Merged the 2.0.34 fixes for resource allocation * failures. */ /* * 1998/09/20 -- David Weinehall -- Added slow-down code for buggy PS/2-drives. */ /* * 1999/08/13 -- Paul Slootman -- floppy stopped working on Alpha after 24 * days, 6 hours, 32 minutes and 32 seconds (i.e. MAXINT jiffies; ints were * being used to store jiffies, which are unsigned longs). */ /* * 2000/08/28 -- Arnaldo Carvalho de Melo <acme@conectiva.com.br> * - get rid of check_region * - s/suser/capable/ */ /* * 2001/08/26 -- Paul Gortmaker - fix insmod oops on machines with no * floppy controller (lingering task on list after module is gone... boom.) */ /* * 2002/02/07 -- Anton Altaparmakov - Fix io ports reservation to correct range * (0x3f2-0x3f5, 0x3f7). This fix is a bit of a hack but the proper fix * requires many non-obvious changes in arch dependent code. */ /* 2003/07/28 -- Daniele Bellucci <bellucda@tiscali.it>. * Better audit of register_blkdev. */ |
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#undef FLOPPY_SILENT_DCL_CLEAR #define REALLY_SLOW_IO #define DEBUGT 2 |
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#define DPRINT(format, args...) \ pr_info("floppy%d: " format, current_drive, ##args) #define DCL_DEBUG /* debug disk change line */ |
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#ifdef DCL_DEBUG #define debug_dcl(test, fmt, args...) \ do { if ((test) & FD_DEBUG) DPRINT(fmt, ##args); } while (0) #else #define debug_dcl(test, fmt, args...) \ do { if (0) DPRINT(fmt, ##args); } while (0) #endif |
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/* do print messages for unexpected interrupts */ static int print_unex = 1; #include <linux/module.h> #include <linux/sched.h> #include <linux/fs.h> #include <linux/kernel.h> #include <linux/timer.h> #include <linux/workqueue.h> #define FDPATCHES #include <linux/fdreg.h> |
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#include <linux/fd.h> #include <linux/hdreg.h> |
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#include <linux/errno.h> #include <linux/slab.h> #include <linux/mm.h> #include <linux/bio.h> #include <linux/string.h> |
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#include <linux/jiffies.h> |
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#include <linux/fcntl.h> #include <linux/delay.h> #include <linux/mc146818rtc.h> /* CMOS defines */ #include <linux/ioport.h> #include <linux/interrupt.h> #include <linux/init.h> |
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#include <linux/platform_device.h> |
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#include <linux/mod_devicetable.h> |
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#include <linux/mutex.h> |
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#include <linux/io.h> #include <linux/uaccess.h> |
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#include <linux/async.h> |
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/* * PS/2 floppies have much slower step rates than regular floppies. * It's been recommended that take about 1/4 of the default speed * in some more extreme cases. */ |
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static DEFINE_MUTEX(floppy_mutex); |
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static int slow_floppy; #include <asm/dma.h> #include <asm/irq.h> |
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static int FLOPPY_IRQ = 6; static int FLOPPY_DMA = 2; static int can_use_virtual_dma = 2; /* ======= * can use virtual DMA: * 0 = use of virtual DMA disallowed by config * 1 = use of virtual DMA prescribed by config * 2 = no virtual DMA preference configured. By default try hard DMA, * but fall back on virtual DMA when not enough memory available */ static int use_virtual_dma; /* ======= * use virtual DMA * 0 using hard DMA * 1 using virtual DMA * This variable is set to virtual when a DMA mem problem arises, and * reset back in floppy_grab_irq_and_dma. * It is not safe to reset it in other circumstances, because the floppy * driver may have several buffers in use at once, and we do currently not * record each buffers capabilities */ static DEFINE_SPINLOCK(floppy_lock); |
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static unsigned short virtual_dma_port = 0x3f0; |
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irqreturn_t floppy_interrupt(int irq, void *dev_id); |
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static int set_dor(int fdc, char mask, char data); |
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#define K_64 0x10000 /* 64KB */ /* the following is the mask of allowed drives. By default units 2 and * 3 of both floppy controllers are disabled, because switching on the * motor of these drives causes system hangs on some PCI computers. drive * 0 is the low bit (0x1), and drive 7 is the high bit (0x80). Bits are on if * a drive is allowed. * * NOTE: This must come before we include the arch floppy header because * some ports reference this variable from there. -DaveM */ static int allowed_drive_mask = 0x33; #include <asm/floppy.h> static int irqdma_allocated; |
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#include <linux/blkdev.h> #include <linux/blkpg.h> #include <linux/cdrom.h> /* for the compatibility eject ioctl */ #include <linux/completion.h> static struct request *current_req; |
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static void do_fd_request(struct request_queue *q); |
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static int set_next_request(void); |
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#ifndef fd_get_dma_residue #define fd_get_dma_residue() get_dma_residue(FLOPPY_DMA) #endif /* Dma Memory related stuff */ #ifndef fd_dma_mem_free #define fd_dma_mem_free(addr, size) free_pages(addr, get_order(size)) #endif #ifndef fd_dma_mem_alloc |
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#define fd_dma_mem_alloc(size) __get_dma_pages(GFP_KERNEL, get_order(size)) |
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#endif static inline void fallback_on_nodma_alloc(char **addr, size_t l) { #ifdef FLOPPY_CAN_FALLBACK_ON_NODMA if (*addr) return; /* we have the memory */ if (can_use_virtual_dma != 2) return; /* no fallback allowed */ |
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pr_info("DMA memory shortage. Temporarily falling back on virtual DMA "); |
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*addr = (char *)nodma_mem_alloc(l); #else return; #endif } /* End dma memory related stuff */ static unsigned long fake_change; |
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static bool initialized; |
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#define ITYPE(x) (((x) >> 2) & 0x1f) #define TOMINOR(x) ((x & 3) | ((x & 4) << 5)) #define UNIT(x) ((x) & 0x03) /* drive on fdc */ #define FDC(x) (((x) & 0x04) >> 2) /* fdc of drive */ |
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/* reverse mapping from unit and fdc to drive */ |
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#define REVDRIVE(fdc, unit) ((unit) + ((fdc) << 2)) |
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#define DP (&drive_params[current_drive]) #define DRS (&drive_state[current_drive]) #define DRWE (&write_errors[current_drive]) #define FDCS (&fdc_state[fdc]) |
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#define UDP (&drive_params[drive]) #define UDRS (&drive_state[drive]) #define UDRWE (&write_errors[drive]) #define UFDCS (&fdc_state[FDC(drive)]) |
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#define PH_HEAD(floppy, head) (((((floppy)->stretch & 2) >> 1) ^ head) << 2) #define STRETCH(floppy) ((floppy)->stretch & FD_STRETCH) |
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/* read/write */ |
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#define COMMAND (raw_cmd->cmd[0]) #define DR_SELECT (raw_cmd->cmd[1]) #define TRACK (raw_cmd->cmd[2]) #define HEAD (raw_cmd->cmd[3]) #define SECTOR (raw_cmd->cmd[4]) #define SIZECODE (raw_cmd->cmd[5]) #define SECT_PER_TRACK (raw_cmd->cmd[6]) #define GAP (raw_cmd->cmd[7]) #define SIZECODE2 (raw_cmd->cmd[8]) |
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#define NR_RW 9 /* format */ |
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#define F_SIZECODE (raw_cmd->cmd[2]) #define F_SECT_PER_TRACK (raw_cmd->cmd[3]) #define F_GAP (raw_cmd->cmd[4]) #define F_FILL (raw_cmd->cmd[5]) |
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#define NR_F 6 /* |
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* Maximum disk size (in kilobytes). * This default is used whenever the current disk size is unknown. |
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* [Now it is rather a minimum] */ #define MAX_DISK_SIZE 4 /* 3984 */ /* * globals used by 'result()' */ #define MAX_REPLIES 16 static unsigned char reply_buffer[MAX_REPLIES]; |
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static int inr; /* size of reply buffer, when called from interrupt */ |
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#define ST0 (reply_buffer[0]) #define ST1 (reply_buffer[1]) #define ST2 (reply_buffer[2]) #define ST3 (reply_buffer[0]) /* result of GETSTATUS */ #define R_TRACK (reply_buffer[3]) #define R_HEAD (reply_buffer[4]) #define R_SECTOR (reply_buffer[5]) #define R_SIZECODE (reply_buffer[6]) #define SEL_DLY (2 * HZ / 100) |
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/* * this struct defines the different floppy drive types. */ static struct { struct floppy_drive_params params; const char *name; /* name printed while booting */ } default_drive_params[] = { /* NOTE: the time values in jiffies should be in msec! CMOS drive type | Maximum data rate supported by drive type | | Head load time, msec | | | Head unload time, msec (not used) | | | | Step rate interval, usec | | | | | Time needed for spinup time (jiffies) | | | | | | Timeout for spinning down (jiffies) | | | | | | | Spindown offset (where disk stops) | | | | | | | | Select delay | | | | | | | | | RPS | | | | | | | | | | Max number of tracks | | | | | | | | | | | Interrupt timeout | | | | | | | | | | | | Max nonintlv. sectors | | | | | | | | | | | | | -Max Errors- flags */ {{0, 500, 16, 16, 8000, 1*HZ, 3*HZ, 0, SEL_DLY, 5, 80, 3*HZ, 20, {3,1,2,0,2}, 0, 0, { 7, 4, 8, 2, 1, 5, 3,10}, 3*HZ/2, 0 }, "unknown" }, {{1, 300, 16, 16, 8000, 1*HZ, 3*HZ, 0, SEL_DLY, 5, 40, 3*HZ, 17, {3,1,2,0,2}, 0, 0, { 1, 0, 0, 0, 0, 0, 0, 0}, 3*HZ/2, 1 }, "360K PC" }, /*5 1/4 360 KB PC*/ {{2, 500, 16, 16, 6000, 4*HZ/10, 3*HZ, 14, SEL_DLY, 6, 83, 3*HZ, 17, {3,1,2,0,2}, 0, 0, { 2, 5, 6,23,10,20,12, 0}, 3*HZ/2, 2 }, "1.2M" }, /*5 1/4 HD AT*/ {{3, 250, 16, 16, 3000, 1*HZ, 3*HZ, 0, SEL_DLY, 5, 83, 3*HZ, 20, {3,1,2,0,2}, 0, 0, { 4,22,21,30, 3, 0, 0, 0}, 3*HZ/2, 4 }, "720k" }, /*3 1/2 DD*/ {{4, 500, 16, 16, 4000, 4*HZ/10, 3*HZ, 10, SEL_DLY, 5, 83, 3*HZ, 20, {3,1,2,0,2}, 0, 0, { 7, 4,25,22,31,21,29,11}, 3*HZ/2, 7 }, "1.44M" }, /*3 1/2 HD*/ {{5, 1000, 15, 8, 3000, 4*HZ/10, 3*HZ, 10, SEL_DLY, 5, 83, 3*HZ, 40, {3,1,2,0,2}, 0, 0, { 7, 8, 4,25,28,22,31,21}, 3*HZ/2, 8 }, "2.88M AMI BIOS" }, /*3 1/2 ED*/ {{6, 1000, 15, 8, 3000, 4*HZ/10, 3*HZ, 10, SEL_DLY, 5, 83, 3*HZ, 40, {3,1,2,0,2}, 0, 0, { 7, 8, 4,25,28,22,31,21}, 3*HZ/2, 8 }, "2.88M" } /*3 1/2 ED*/ /* | --autodetected formats--- | | | * read_track | | Name printed when booting * | Native format * Frequency of disk change checks */ }; static struct floppy_drive_params drive_params[N_DRIVE]; static struct floppy_drive_struct drive_state[N_DRIVE]; static struct floppy_write_errors write_errors[N_DRIVE]; static struct timer_list motor_off_timer[N_DRIVE]; static struct gendisk *disks[N_DRIVE]; static struct block_device *opened_bdev[N_DRIVE]; |
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static DEFINE_MUTEX(open_lock); |
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static struct floppy_raw_cmd *raw_cmd, default_raw_cmd; |
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static int fdc_queue; |
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/* * This struct defines the different floppy types. * * Bit 0 of 'stretch' tells if the tracks need to be doubled for some * types (e.g. 360kB diskette in 1.2MB drive, etc.). Bit 1 of 'stretch' * tells if the disk is in Commodore 1581 format, which means side 0 sectors * are located on side 1 of the disk but with a side 0 ID, and vice-versa. * This is the same as the Sharp MZ-80 5.25" CP/M disk format, except that the * 1581's logical side 0 is on physical side 1, whereas the Sharp's logical * side 0 is on physical side 0 (but with the misnamed sector IDs). * 'stretch' should probably be renamed to something more general, like |
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* 'options'. * * Bits 2 through 9 of 'stretch' tell the number of the first sector. * The LSB (bit 2) is flipped. For most disks, the first sector * is 1 (represented by 0x00<<2). For some CP/M and music sampler * disks (such as Ensoniq EPS 16plus) it is 0 (represented as 0x01<<2). * For Amstrad CPC disks it is 0xC1 (represented as 0xC0<<2). * * Other parameters should be self-explanatory (see also setfdprm(8)). |
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*/ /* Size | Sectors per track | | Head | | | Tracks | | | | Stretch | | | | | Gap 1 size | | | | | | Data rate, | 0x40 for perp | | | | | | | Spec1 (stepping rate, head unload | | | | | | | | /fmt gap (gap2) */ static struct floppy_struct floppy_type[32] = { { 0, 0,0, 0,0,0x00,0x00,0x00,0x00,NULL }, /* 0 no testing */ { 720, 9,2,40,0,0x2A,0x02,0xDF,0x50,"d360" }, /* 1 360KB PC */ { 2400,15,2,80,0,0x1B,0x00,0xDF,0x54,"h1200" }, /* 2 1.2MB AT */ { 720, 9,1,80,0,0x2A,0x02,0xDF,0x50,"D360" }, /* 3 360KB SS 3.5" */ { 1440, 9,2,80,0,0x2A,0x02,0xDF,0x50,"D720" }, /* 4 720KB 3.5" */ { 720, 9,2,40,1,0x23,0x01,0xDF,0x50,"h360" }, /* 5 360KB AT */ { 1440, 9,2,80,0,0x23,0x01,0xDF,0x50,"h720" }, /* 6 720KB AT */ { 2880,18,2,80,0,0x1B,0x00,0xCF,0x6C,"H1440" }, /* 7 1.44MB 3.5" */ { 5760,36,2,80,0,0x1B,0x43,0xAF,0x54,"E2880" }, /* 8 2.88MB 3.5" */ { 6240,39,2,80,0,0x1B,0x43,0xAF,0x28,"E3120" }, /* 9 3.12MB 3.5" */ { 2880,18,2,80,0,0x25,0x00,0xDF,0x02,"h1440" }, /* 10 1.44MB 5.25" */ { 3360,21,2,80,0,0x1C,0x00,0xCF,0x0C,"H1680" }, /* 11 1.68MB 3.5" */ { 820,10,2,41,1,0x25,0x01,0xDF,0x2E,"h410" }, /* 12 410KB 5.25" */ { 1640,10,2,82,0,0x25,0x02,0xDF,0x2E,"H820" }, /* 13 820KB 3.5" */ { 2952,18,2,82,0,0x25,0x00,0xDF,0x02,"h1476" }, /* 14 1.48MB 5.25" */ { 3444,21,2,82,0,0x25,0x00,0xDF,0x0C,"H1722" }, /* 15 1.72MB 3.5" */ { 840,10,2,42,1,0x25,0x01,0xDF,0x2E,"h420" }, /* 16 420KB 5.25" */ { 1660,10,2,83,0,0x25,0x02,0xDF,0x2E,"H830" }, /* 17 830KB 3.5" */ { 2988,18,2,83,0,0x25,0x00,0xDF,0x02,"h1494" }, /* 18 1.49MB 5.25" */ { 3486,21,2,83,0,0x25,0x00,0xDF,0x0C,"H1743" }, /* 19 1.74 MB 3.5" */ { 1760,11,2,80,0,0x1C,0x09,0xCF,0x00,"h880" }, /* 20 880KB 5.25" */ { 2080,13,2,80,0,0x1C,0x01,0xCF,0x00,"D1040" }, /* 21 1.04MB 3.5" */ { 2240,14,2,80,0,0x1C,0x19,0xCF,0x00,"D1120" }, /* 22 1.12MB 3.5" */ { 3200,20,2,80,0,0x1C,0x20,0xCF,0x2C,"h1600" }, /* 23 1.6MB 5.25" */ { 3520,22,2,80,0,0x1C,0x08,0xCF,0x2e,"H1760" }, /* 24 1.76MB 3.5" */ { 3840,24,2,80,0,0x1C,0x20,0xCF,0x00,"H1920" }, /* 25 1.92MB 3.5" */ { 6400,40,2,80,0,0x25,0x5B,0xCF,0x00,"E3200" }, /* 26 3.20MB 3.5" */ { 7040,44,2,80,0,0x25,0x5B,0xCF,0x00,"E3520" }, /* 27 3.52MB 3.5" */ { 7680,48,2,80,0,0x25,0x63,0xCF,0x00,"E3840" }, /* 28 3.84MB 3.5" */ |
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{ 3680,23,2,80,0,0x1C,0x10,0xCF,0x00,"H1840" }, /* 29 1.84MB 3.5" */ |
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{ 1600,10,2,80,0,0x25,0x02,0xDF,0x2E,"D800" }, /* 30 800KB 3.5" */ { 3200,20,2,80,0,0x1C,0x00,0xCF,0x2C,"H1600" }, /* 31 1.6MB 3.5" */ }; |
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#define SECTSIZE (_FD_SECTSIZE(*floppy)) /* Auto-detection: Disk type used until the next media change occurs. */ static struct floppy_struct *current_type[N_DRIVE]; /* * User-provided type information. current_type points to * the respective entry of this array. */ static struct floppy_struct user_params[N_DRIVE]; static sector_t floppy_sizes[256]; |
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static char floppy_device_name[] = "floppy"; |
1da177e4c Linux-2.6.12-rc2 |
495 496 497 498 499 500 501 502 |
/* * The driver is trying to determine the correct media format * while probing is set. rw_interrupt() clears it after a * successful access. */ static int probing; /* Synchronization of FDC access. */ |
48c8cee61 drivers/block/flo... |
503 504 505 |
#define FD_COMMAND_NONE -1 #define FD_COMMAND_ERROR 2 #define FD_COMMAND_OKAY 3 |
1da177e4c Linux-2.6.12-rc2 |
506 507 508 509 510 |
static volatile int command_status = FD_COMMAND_NONE; static unsigned long fdc_busy; static DECLARE_WAIT_QUEUE_HEAD(fdc_wait); static DECLARE_WAIT_QUEUE_HEAD(command_done); |
1da177e4c Linux-2.6.12-rc2 |
511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 |
/* Errors during formatting are counted here. */ static int format_errors; /* Format request descriptor. */ static struct format_descr format_req; /* * Rate is 0 for 500kb/s, 1 for 300kbps, 2 for 250kbps * Spec1 is 0xSH, where S is stepping rate (F=1ms, E=2ms, D=3ms etc), * H is head unload time (1=16ms, 2=32ms, etc) */ /* * Track buffer * Because these are written to by the DMA controller, they must * not contain a 64k byte boundary crossing, or data will be * corrupted/lost. */ static char *floppy_track_buffer; static int max_buffer_sectors; static int *errors; |
06f748c47 floppy: do a very... |
533 |
typedef void (*done_f)(int); |
3b06c21e8 floppy: make cont... |
534 |
static const struct cont_t { |
48c8cee61 drivers/block/flo... |
535 536 537 |
void (*interrupt)(void); /* this is called after the interrupt of the * main command */ |
06f748c47 floppy: do a very... |
538 539 |
void (*redo)(void); /* this is called to retry the operation */ void (*error)(void); /* this is called to tally an error */ |
1da177e4c Linux-2.6.12-rc2 |
540 541 542 543 544 545 546 547 |
done_f done; /* this is called to say if the operation has * succeeded/failed */ } *cont; static void floppy_ready(void); static void floppy_start(void); static void process_fd_request(void); static void recalibrate_floppy(void); |
070ad7e79 floppy: convert t... |
548 |
static void floppy_shutdown(struct work_struct *); |
1da177e4c Linux-2.6.12-rc2 |
549 |
|
5a74db06c floppy: request a... |
550 551 |
static int floppy_request_regions(int); static void floppy_release_regions(int); |
1da177e4c Linux-2.6.12-rc2 |
552 553 554 555 556 557 558 559 560 561 |
static int floppy_grab_irq_and_dma(void); static void floppy_release_irq_and_dma(void); /* * The "reset" variable should be tested whenever an interrupt is scheduled, * after the commands have been sent. This is to ensure that the driver doesn't * get wedged when the interrupt doesn't come because of a failed command. * reset doesn't need to be tested before sending commands, because * output_byte is automatically disabled when reset is set. */ |
1da177e4c Linux-2.6.12-rc2 |
562 563 564 565 566 567 568 |
static void reset_fdc(void); /* * These are global variables, as that's the easiest way to give * information to interrupts. They are the data used for the current * request. */ |
48c8cee61 drivers/block/flo... |
569 570 571 |
#define NO_TRACK -1 #define NEED_1_RECAL -2 #define NEED_2_RECAL -3 |
1da177e4c Linux-2.6.12-rc2 |
572 |
|
575cfc673 floppy: use atomi... |
573 |
static atomic_t usage_count = ATOMIC_INIT(0); |
1da177e4c Linux-2.6.12-rc2 |
574 575 576 577 578 579 580 581 582 583 |
/* buffer related variables */ static int buffer_track = -1; static int buffer_drive = -1; static int buffer_min = -1; static int buffer_max = -1; /* fdc related variables, should end up in a struct */ static struct floppy_fdc_state fdc_state[N_FDC]; static int fdc; /* current fdc */ |
070ad7e79 floppy: convert t... |
584 |
static struct workqueue_struct *floppy_wq; |
1da177e4c Linux-2.6.12-rc2 |
585 586 587 588 589 590 |
static struct floppy_struct *_floppy = floppy_type; static unsigned char current_drive; static long current_count_sectors; static unsigned char fsector_t; /* sector in track */ static unsigned char in_sector_offset; /* offset within physical sector, * expressed in units of 512 bytes */ |
2b51dca79 floppy: replace N... |
591 592 593 594 |
static inline bool drive_no_geom(int drive) { return !current_type[drive] && !ITYPE(UDRS->fd_device); } |
1da177e4c Linux-2.6.12-rc2 |
595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 |
#ifndef fd_eject static inline int fd_eject(int drive) { return -EINVAL; } #endif /* * Debugging * ========= */ #ifdef DEBUGT static long unsigned debugtimer; static inline void set_debugt(void) { debugtimer = jiffies; } |
ded2863d0 drivers/block/flo... |
613 |
static inline void debugt(const char *func, const char *msg) |
1da177e4c Linux-2.6.12-rc2 |
614 615 |
{ if (DP->flags & DEBUGT) |
ded2863d0 drivers/block/flo... |
616 617 |
pr_info("%s:%s dtime=%lu ", func, msg, jiffies - debugtimer); |
1da177e4c Linux-2.6.12-rc2 |
618 619 620 |
} #else static inline void set_debugt(void) { } |
ded2863d0 drivers/block/flo... |
621 |
static inline void debugt(const char *func, const char *msg) { } |
1da177e4c Linux-2.6.12-rc2 |
622 |
#endif /* DEBUGT */ |
1da177e4c Linux-2.6.12-rc2 |
623 |
|
070ad7e79 floppy: convert t... |
624 |
static DECLARE_DELAYED_WORK(fd_timeout, floppy_shutdown); |
1da177e4c Linux-2.6.12-rc2 |
625 |
static const char *timeout_message; |
275176bc2 drivers/block/flo... |
626 |
static void is_alive(const char *func, const char *message) |
1da177e4c Linux-2.6.12-rc2 |
627 628 |
{ /* this routine checks whether the floppy driver is "alive" */ |
c529730a9 drivers/block/flo... |
629 |
if (test_bit(0, &fdc_busy) && command_status < 2 && |
070ad7e79 floppy: convert t... |
630 |
!delayed_work_pending(&fd_timeout)) { |
275176bc2 drivers/block/flo... |
631 632 |
DPRINT("%s: timeout handler died. %s ", func, message); |
1da177e4c Linux-2.6.12-rc2 |
633 634 |
} } |
1da177e4c Linux-2.6.12-rc2 |
635 |
|
48c8cee61 drivers/block/flo... |
636 |
static void (*do_floppy)(void) = NULL; |
1da177e4c Linux-2.6.12-rc2 |
637 |
|
1da177e4c Linux-2.6.12-rc2 |
638 |
#define OLOGSIZE 20 |
48c8cee61 drivers/block/flo... |
639 |
static void (*lasthandler)(void); |
1da177e4c Linux-2.6.12-rc2 |
640 641 642 643 644 645 646 647 648 649 650 651 |
static unsigned long interruptjiffies; static unsigned long resultjiffies; static int resultsize; static unsigned long lastredo; static struct output_log { unsigned char data; unsigned char status; unsigned long jiffies; } output_log[OLOGSIZE]; static int output_log_pos; |
1da177e4c Linux-2.6.12-rc2 |
652 653 654 |
#define current_reqD -1 #define MAXTIMEOUT -2 |
73507e6cd drivers/block/flo... |
655 |
static void __reschedule_timeout(int drive, const char *message) |
1da177e4c Linux-2.6.12-rc2 |
656 |
{ |
070ad7e79 floppy: convert t... |
657 |
unsigned long delay; |
1da177e4c Linux-2.6.12-rc2 |
658 659 |
if (drive == current_reqD) drive = current_drive; |
070ad7e79 floppy: convert t... |
660 |
|
4acb3e2f9 Off by one in flo... |
661 |
if (drive < 0 || drive >= N_DRIVE) { |
070ad7e79 floppy: convert t... |
662 |
delay = 20UL * HZ; |
1da177e4c Linux-2.6.12-rc2 |
663 664 |
drive = 0; } else |
070ad7e79 floppy: convert t... |
665 |
delay = UDP->timeout; |
e7c2f9674 workqueue: use mo... |
666 |
mod_delayed_work(floppy_wq, &fd_timeout, delay); |
a81ee5447 drivers/block/flo... |
667 |
if (UDP->flags & FD_DEBUG) |
73507e6cd drivers/block/flo... |
668 669 |
DPRINT("reschedule timeout %s ", message); |
1da177e4c Linux-2.6.12-rc2 |
670 671 |
timeout_message = message; } |
73507e6cd drivers/block/flo... |
672 |
static void reschedule_timeout(int drive, const char *message) |
1da177e4c Linux-2.6.12-rc2 |
673 674 675 676 |
{ unsigned long flags; spin_lock_irqsave(&floppy_lock, flags); |
73507e6cd drivers/block/flo... |
677 |
__reschedule_timeout(drive, message); |
1da177e4c Linux-2.6.12-rc2 |
678 679 |
spin_unlock_irqrestore(&floppy_lock, flags); } |
48c8cee61 drivers/block/flo... |
680 681 |
#define INFBOUND(a, b) (a) = max_t(int, a, b) #define SUPBOUND(a, b) (a) = min_t(int, a, b) |
1da177e4c Linux-2.6.12-rc2 |
682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 |
/* * Bottom half floppy driver. * ========================== * * This part of the file contains the code talking directly to the hardware, * and also the main service loop (seek-configure-spinup-command) */ /* * disk change. * This routine is responsible for maintaining the FD_DISK_CHANGE flag, * and the last_checked date. * * last_checked is the date of the last check which showed 'no disk change' * FD_DISK_CHANGE is set under two conditions: * 1. The floppy has been changed after some i/o to that floppy already * took place. * 2. No floppy disk is in the drive. This is done in order to ensure that * requests are quickly flushed in case there is no disk in the drive. It * follows that FD_DISK_CHANGE can only be cleared if there is a disk in * the drive. * * For 1., maxblock is observed. Maxblock is 0 if no i/o has taken place yet. * For 2., FD_DISK_NEWCHANGE is watched. FD_DISK_NEWCHANGE is cleared on * each seek. If a disk is present, the disk change line should also be * cleared on each seek. Thus, if FD_DISK_NEWCHANGE is clear, but the disk * change line is set, this means either that no disk is in the drive, or * that it has been removed since the last seek. * * This means that we really have a third possibility too: * The floppy has been changed after the last seek. */ static int disk_change(int drive) { int fdc = FDC(drive); |
06f748c47 floppy: do a very... |
719 |
|
50297cbf0 [PATCH] drivers/b... |
720 |
if (time_before(jiffies, UDRS->select_date + UDP->select_delay)) |
1da177e4c Linux-2.6.12-rc2 |
721 722 723 724 725 726 727 728 729 730 |
DPRINT("WARNING disk change called early "); if (!(FDCS->dor & (0x10 << UNIT(drive))) || (FDCS->dor & 3) != UNIT(drive) || fdc != FDC(drive)) { DPRINT("probing disk change on unselected drive "); DPRINT("drive=%d fdc=%d dor=%x ", drive, FDC(drive), (unsigned int)FDCS->dor); } |
1da177e4c Linux-2.6.12-rc2 |
731 |
|
87f530d8f drivers/block/flo... |
732 733 734 735 736 737 738 739 740 |
debug_dcl(UDP->flags, "checking disk change line for drive %d ", drive); debug_dcl(UDP->flags, "jiffies=%lu ", jiffies); debug_dcl(UDP->flags, "disk change line=%x ", fd_inb(FD_DIR) & 0x80); debug_dcl(UDP->flags, "flags=%lx ", UDRS->flags); |
1da177e4c Linux-2.6.12-rc2 |
741 |
if (UDP->flags & FD_BROKEN_DCL) |
e02985361 drivers/block/flo... |
742 |
return test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags); |
1da177e4c Linux-2.6.12-rc2 |
743 |
if ((fd_inb(FD_DIR) ^ UDP->flags) & 0x80) { |
e02985361 drivers/block/flo... |
744 745 746 747 748 |
set_bit(FD_VERIFY_BIT, &UDRS->flags); /* verify write protection */ if (UDRS->maxblock) /* mark it changed */ set_bit(FD_DISK_CHANGED_BIT, &UDRS->flags); |
1da177e4c Linux-2.6.12-rc2 |
749 750 751 752 753 |
/* invalidate its geometry */ if (UDRS->keep_data >= 0) { if ((UDP->flags & FTD_MSG) && current_type[drive] != NULL) |
891eda80a drivers/block/flo... |
754 755 |
DPRINT("Disk type is undefined after disk change "); |
1da177e4c Linux-2.6.12-rc2 |
756 757 758 |
current_type[drive] = NULL; floppy_sizes[TOMINOR(drive)] = MAX_DISK_SIZE << 1; } |
1da177e4c Linux-2.6.12-rc2 |
759 760 761 |
return 1; } else { UDRS->last_checked = jiffies; |
e02985361 drivers/block/flo... |
762 |
clear_bit(FD_DISK_NEWCHANGE_BIT, &UDRS->flags); |
1da177e4c Linux-2.6.12-rc2 |
763 764 765 766 767 768 769 770 |
} return 0; } static inline int is_selected(int dor, int unit) { return ((dor & (0x10 << unit)) && (dor & 3) == unit); } |
57584c5a3 drivers/block/flo... |
771 772 773 774 775 |
static bool is_ready_state(int status) { int state = status & (STATUS_READY | STATUS_DIR | STATUS_DMA); return state == STATUS_READY; } |
1da177e4c Linux-2.6.12-rc2 |
776 777 |
static int set_dor(int fdc, char mask, char data) { |
fdc1ca8ab floppy: remove re... |
778 779 780 781 |
unsigned char unit; unsigned char drive; unsigned char newdor; unsigned char olddor; |
1da177e4c Linux-2.6.12-rc2 |
782 783 784 785 786 787 788 789 790 791 |
if (FDCS->address == -1) return -1; olddor = FDCS->dor; newdor = (olddor & mask) | data; if (newdor != olddor) { unit = olddor & 0x3; if (is_selected(olddor, unit) && !is_selected(newdor, unit)) { drive = REVDRIVE(fdc, unit); |
87f530d8f drivers/block/flo... |
792 793 794 |
debug_dcl(UDP->flags, "calling disk change from set_dor "); |
1da177e4c Linux-2.6.12-rc2 |
795 796 797 798 799 800 801 802 803 804 805 |
disk_change(drive); } FDCS->dor = newdor; fd_outb(newdor, FD_DOR); unit = newdor & 0x3; if (!is_selected(olddor, unit) && is_selected(newdor, unit)) { drive = REVDRIVE(fdc, unit); UDRS->select_date = jiffies; } } |
1da177e4c Linux-2.6.12-rc2 |
806 807 808 809 810 811 812 813 814 815 816 |
return olddor; } static void twaddle(void) { if (DP->select_delay) return; fd_outb(FDCS->dor & ~(0x10 << UNIT(current_drive)), FD_DOR); fd_outb(FDCS->dor, FD_DOR); DRS->select_date = jiffies; } |
57584c5a3 drivers/block/flo... |
817 818 819 820 |
/* * Reset all driver information about the current fdc. * This is needed after a reset, and after a raw command. */ |
1da177e4c Linux-2.6.12-rc2 |
821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 |
static void reset_fdc_info(int mode) { int drive; FDCS->spec1 = FDCS->spec2 = -1; FDCS->need_configure = 1; FDCS->perp_mode = 1; FDCS->rawcmd = 0; for (drive = 0; drive < N_DRIVE; drive++) if (FDC(drive) == fdc && (mode || UDRS->track != NEED_1_RECAL)) UDRS->track = NEED_2_RECAL; } /* selects the fdc and drive, and enables the fdc's input/dma. */ static void set_fdc(int drive) { if (drive >= 0 && drive < N_DRIVE) { fdc = FDC(drive); current_drive = drive; } if (fdc != 1 && fdc != 0) { |
b46df356d drivers/block/flo... |
842 843 |
pr_info("bad fdc value "); |
1da177e4c Linux-2.6.12-rc2 |
844 845 846 847 848 849 850 851 852 853 854 855 856 |
return; } set_dor(fdc, ~0, 8); #if N_FDC > 1 set_dor(1 - fdc, ~8, 0); #endif if (FDCS->rawcmd == 2) reset_fdc_info(1); if (fd_inb(FD_STATUS) != STATUS_READY) FDCS->reset = 1; } /* locks the driver */ |
a0c80efe5 floppy: fix lock_... |
857 |
static int lock_fdc(int drive) |
1da177e4c Linux-2.6.12-rc2 |
858 |
{ |
b862f26fe floppy: use wait_... |
859 860 861 |
if (WARN(atomic_read(&usage_count) == 0, "Trying to lock fdc while usage count=0 ")) |
1da177e4c Linux-2.6.12-rc2 |
862 |
return -1; |
1da177e4c Linux-2.6.12-rc2 |
863 |
|
b862f26fe floppy: use wait_... |
864 865 |
if (wait_event_interruptible(fdc_wait, !test_and_set_bit(0, &fdc_busy))) return -EINTR; |
1da177e4c Linux-2.6.12-rc2 |
866 |
|
1da177e4c Linux-2.6.12-rc2 |
867 |
command_status = FD_COMMAND_NONE; |
070ad7e79 floppy: convert t... |
868 |
reschedule_timeout(drive, "lock fdc"); |
1da177e4c Linux-2.6.12-rc2 |
869 870 871 |
set_fdc(drive); return 0; } |
1da177e4c Linux-2.6.12-rc2 |
872 |
/* unlocks the driver */ |
be7a12bb1 floppy: remove un... |
873 |
static void unlock_fdc(void) |
1da177e4c Linux-2.6.12-rc2 |
874 |
{ |
1da177e4c Linux-2.6.12-rc2 |
875 876 877 |
if (!test_bit(0, &fdc_busy)) DPRINT("FDC access conflict! "); |
070ad7e79 floppy: convert t... |
878 |
raw_cmd = NULL; |
1da177e4c Linux-2.6.12-rc2 |
879 |
command_status = FD_COMMAND_NONE; |
136b5721d workqueue: deprec... |
880 |
cancel_delayed_work(&fd_timeout); |
070ad7e79 floppy: convert t... |
881 |
do_floppy = NULL; |
1da177e4c Linux-2.6.12-rc2 |
882 883 |
cont = NULL; clear_bit(0, &fdc_busy); |
1da177e4c Linux-2.6.12-rc2 |
884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 |
wake_up(&fdc_wait); } /* switches the motor off after a given timeout */ static void motor_off_callback(unsigned long nr) { unsigned char mask = ~(0x10 << UNIT(nr)); set_dor(FDC(nr), mask, 0); } /* schedules motor off */ static void floppy_off(unsigned int drive) { unsigned long volatile delta; |
fdc1ca8ab floppy: remove re... |
899 |
int fdc = FDC(drive); |
1da177e4c Linux-2.6.12-rc2 |
900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 |
if (!(FDCS->dor & (0x10 << UNIT(drive)))) return; del_timer(motor_off_timer + drive); /* make spindle stop in a position which minimizes spinup time * next time */ if (UDP->rps) { delta = jiffies - UDRS->first_read_date + HZ - UDP->spindown_offset; delta = ((delta * UDP->rps) % HZ) / UDP->rps; motor_off_timer[drive].expires = jiffies + UDP->spindown - delta; } add_timer(motor_off_timer + drive); } /* * cycle through all N_DRIVE floppy drives, for disk change testing. * stopping at current drive. This is done before any long operation, to * be sure to have up to date disk change information. */ static void scandrives(void) { |
06f748c47 floppy: do a very... |
925 926 927 |
int i; int drive; int saved_drive; |
1da177e4c Linux-2.6.12-rc2 |
928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 |
if (DP->select_delay) return; saved_drive = current_drive; for (i = 0; i < N_DRIVE; i++) { drive = (saved_drive + i + 1) % N_DRIVE; if (UDRS->fd_ref == 0 || UDP->select_delay != 0) continue; /* skip closed drives */ set_fdc(drive); if (!(set_dor(fdc, ~3, UNIT(drive) | (0x10 << UNIT(drive))) & (0x10 << UNIT(drive)))) /* switch the motor off again, if it was off to * begin with */ set_dor(fdc, ~(0x10 << UNIT(drive)), 0); } set_fdc(saved_drive); } static void empty(void) { } |
75ddb38f0 floppy: don't use... |
950 951 952 953 954 955 956 957 |
static void (*floppy_work_fn)(void); static void floppy_work_workfn(struct work_struct *work) { floppy_work_fn(); } static DECLARE_WORK(floppy_work, floppy_work_workfn); |
1da177e4c Linux-2.6.12-rc2 |
958 |
|
48c8cee61 drivers/block/flo... |
959 |
static void schedule_bh(void (*handler)(void)) |
1da177e4c Linux-2.6.12-rc2 |
960 |
{ |
070ad7e79 floppy: convert t... |
961 |
WARN_ON(work_pending(&floppy_work)); |
75ddb38f0 floppy: don't use... |
962 |
floppy_work_fn = handler; |
070ad7e79 floppy: convert t... |
963 |
queue_work(floppy_wq, &floppy_work); |
1da177e4c Linux-2.6.12-rc2 |
964 |
} |
75ddb38f0 floppy: don't use... |
965 966 967 968 969 970 971 972 |
static void (*fd_timer_fn)(void) = NULL; static void fd_timer_workfn(struct work_struct *work) { fd_timer_fn(); } static DECLARE_DELAYED_WORK(fd_timer, fd_timer_workfn); |
1da177e4c Linux-2.6.12-rc2 |
973 974 975 |
static void cancel_activity(void) { |
1da177e4c Linux-2.6.12-rc2 |
976 |
do_floppy = NULL; |
070ad7e79 floppy: convert t... |
977 978 |
cancel_delayed_work_sync(&fd_timer); cancel_work_sync(&floppy_work); |
1da177e4c Linux-2.6.12-rc2 |
979 980 981 982 |
} /* this function makes sure that the disk stays in the drive during the * transfer */ |
75ddb38f0 floppy: don't use... |
983 |
static void fd_watchdog(void) |
1da177e4c Linux-2.6.12-rc2 |
984 |
{ |
87f530d8f drivers/block/flo... |
985 986 |
debug_dcl(DP->flags, "calling disk change from watchdog "); |
1da177e4c Linux-2.6.12-rc2 |
987 988 989 990 991 992 993 994 |
if (disk_change(current_drive)) { DPRINT("disk removed during i/o "); cancel_activity(); cont->done(0); reset_fdc(); } else { |
070ad7e79 floppy: convert t... |
995 |
cancel_delayed_work(&fd_timer); |
75ddb38f0 floppy: don't use... |
996 |
fd_timer_fn = fd_watchdog; |
070ad7e79 floppy: convert t... |
997 |
queue_delayed_work(floppy_wq, &fd_timer, HZ / 10); |
1da177e4c Linux-2.6.12-rc2 |
998 999 1000 1001 1002 |
} } static void main_command_interrupt(void) { |
070ad7e79 floppy: convert t... |
1003 |
cancel_delayed_work(&fd_timer); |
1da177e4c Linux-2.6.12-rc2 |
1004 1005 1006 1007 |
cont->interrupt(); } /* waits for a delay (spinup or select) to pass */ |
75ddb38f0 floppy: don't use... |
1008 1009 |
static int fd_wait_for_completion(unsigned long expires, void (*function)(void)) |
1da177e4c Linux-2.6.12-rc2 |
1010 1011 1012 1013 1014 1015 1016 |
{ if (FDCS->reset) { reset_fdc(); /* do the reset during sleep to win time * if we don't need to sleep, it's a good * occasion anyways */ return 1; } |
070ad7e79 floppy: convert t... |
1017 1018 |
if (time_before(jiffies, expires)) { cancel_delayed_work(&fd_timer); |
75ddb38f0 floppy: don't use... |
1019 |
fd_timer_fn = function; |
070ad7e79 floppy: convert t... |
1020 |
queue_delayed_work(floppy_wq, &fd_timer, expires - jiffies); |
1da177e4c Linux-2.6.12-rc2 |
1021 1022 1023 1024 |
return 1; } return 0; } |
1da177e4c Linux-2.6.12-rc2 |
1025 1026 1027 |
static void setup_DMA(void) { unsigned long f; |
1da177e4c Linux-2.6.12-rc2 |
1028 1029 |
if (raw_cmd->length == 0) { int i; |
b46df356d drivers/block/flo... |
1030 |
pr_info("zero dma transfer size:"); |
1da177e4c Linux-2.6.12-rc2 |
1031 |
for (i = 0; i < raw_cmd->cmd_count; i++) |
b46df356d drivers/block/flo... |
1032 1033 1034 |
pr_cont("%x,", raw_cmd->cmd[i]); pr_cont(" "); |
1da177e4c Linux-2.6.12-rc2 |
1035 1036 1037 1038 1039 |
cont->done(0); FDCS->reset = 1; return; } if (((unsigned long)raw_cmd->kernel_data) % 512) { |
b46df356d drivers/block/flo... |
1040 1041 |
pr_info("non aligned address: %p ", raw_cmd->kernel_data); |
1da177e4c Linux-2.6.12-rc2 |
1042 1043 1044 1045 |
cont->done(0); FDCS->reset = 1; return; } |
1da177e4c Linux-2.6.12-rc2 |
1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 |
f = claim_dma_lock(); fd_disable_dma(); #ifdef fd_dma_setup if (fd_dma_setup(raw_cmd->kernel_data, raw_cmd->length, (raw_cmd->flags & FD_RAW_READ) ? DMA_MODE_READ : DMA_MODE_WRITE, FDCS->address) < 0) { release_dma_lock(f); cont->done(0); FDCS->reset = 1; return; } release_dma_lock(f); #else fd_clear_dma_ff(); fd_cacheflush(raw_cmd->kernel_data, raw_cmd->length); fd_set_dma_mode((raw_cmd->flags & FD_RAW_READ) ? DMA_MODE_READ : DMA_MODE_WRITE); fd_set_dma_addr(raw_cmd->kernel_data); fd_set_dma_count(raw_cmd->length); virtual_dma_port = FDCS->address; fd_enable_dma(); release_dma_lock(f); #endif |
1da177e4c Linux-2.6.12-rc2 |
1069 1070 1071 1072 1073 1074 1075 |
} static void show_floppy(void); /* waits until the fdc becomes ready */ static int wait_til_ready(void) { |
06f748c47 floppy: do a very... |
1076 1077 |
int status; int counter; |
1da177e4c Linux-2.6.12-rc2 |
1078 1079 1080 1081 1082 1083 1084 |
if (FDCS->reset) return -1; for (counter = 0; counter < 10000; counter++) { status = fd_inb(FD_STATUS); if (status & STATUS_READY) return status; } |
29f1c7848 drivers/block/flo... |
1085 |
if (initialized) { |
1da177e4c Linux-2.6.12-rc2 |
1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 |
DPRINT("Getstatus times out (%x) on fdc %d ", status, fdc); show_floppy(); } FDCS->reset = 1; return -1; } /* sends a command byte to the fdc */ static int output_byte(char byte) { |
d7b2b2ecd drivers/block/flo... |
1097 |
int status = wait_til_ready(); |
1da177e4c Linux-2.6.12-rc2 |
1098 |
|
d7b2b2ecd drivers/block/flo... |
1099 |
if (status < 0) |
1da177e4c Linux-2.6.12-rc2 |
1100 |
return -1; |
57584c5a3 drivers/block/flo... |
1101 1102 |
if (is_ready_state(status)) { |
1da177e4c Linux-2.6.12-rc2 |
1103 |
fd_outb(byte, FD_DATA); |
1da177e4c Linux-2.6.12-rc2 |
1104 1105 1106 1107 |
output_log[output_log_pos].data = byte; output_log[output_log_pos].status = status; output_log[output_log_pos].jiffies = jiffies; output_log_pos = (output_log_pos + 1) % OLOGSIZE; |
1da177e4c Linux-2.6.12-rc2 |
1108 1109 1110 |
return 0; } FDCS->reset = 1; |
29f1c7848 drivers/block/flo... |
1111 |
if (initialized) { |
1da177e4c Linux-2.6.12-rc2 |
1112 1113 1114 1115 1116 1117 1118 |
DPRINT("Unable to send byte %x to FDC. Fdc=%x Status=%x ", byte, fdc, status); show_floppy(); } return -1; } |
1da177e4c Linux-2.6.12-rc2 |
1119 1120 1121 |
/* gets the response from the fdc */ static int result(void) { |
06f748c47 floppy: do a very... |
1122 1123 |
int i; int status = 0; |
1da177e4c Linux-2.6.12-rc2 |
1124 1125 |
for (i = 0; i < MAX_REPLIES; i++) { |
d7b2b2ecd drivers/block/flo... |
1126 1127 |
status = wait_til_ready(); if (status < 0) |
1da177e4c Linux-2.6.12-rc2 |
1128 1129 1130 |
break; status &= STATUS_DIR | STATUS_READY | STATUS_BUSY | STATUS_DMA; if ((status & ~STATUS_BUSY) == STATUS_READY) { |
1da177e4c Linux-2.6.12-rc2 |
1131 1132 |
resultjiffies = jiffies; resultsize = i; |
1da177e4c Linux-2.6.12-rc2 |
1133 1134 1135 1136 1137 1138 1139 |
return i; } if (status == (STATUS_DIR | STATUS_READY | STATUS_BUSY)) reply_buffer[i] = fd_inb(FD_DATA); else break; } |
29f1c7848 drivers/block/flo... |
1140 1141 1142 1143 |
if (initialized) { DPRINT("get result error. Fdc=%d Last status=%x Read bytes=%d ", fdc, status, i); |
1da177e4c Linux-2.6.12-rc2 |
1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 |
show_floppy(); } FDCS->reset = 1; return -1; } #define MORE_OUTPUT -2 /* does the fdc need more output? */ static int need_more_output(void) { |
d7b2b2ecd drivers/block/flo... |
1154 |
int status = wait_til_ready(); |
06f748c47 floppy: do a very... |
1155 |
|
d7b2b2ecd drivers/block/flo... |
1156 |
if (status < 0) |
1da177e4c Linux-2.6.12-rc2 |
1157 |
return -1; |
57584c5a3 drivers/block/flo... |
1158 1159 |
if (is_ready_state(status)) |
1da177e4c Linux-2.6.12-rc2 |
1160 |
return MORE_OUTPUT; |
57584c5a3 drivers/block/flo... |
1161 |
|
1da177e4c Linux-2.6.12-rc2 |
1162 1163 1164 1165 1166 1167 |
return result(); } /* Set perpendicular mode as required, based on data rate, if supported. * 82077 Now tested. 1Mbps data rate only possible with 82077-1. */ |
be7a12bb1 floppy: remove un... |
1168 |
static void perpendicular_mode(void) |
1da177e4c Linux-2.6.12-rc2 |
1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 |
{ unsigned char perp_mode; if (raw_cmd->rate & 0x40) { switch (raw_cmd->rate & 3) { case 0: perp_mode = 2; break; case 3: perp_mode = 3; break; default: DPRINT("Invalid data rate for perpendicular mode! "); cont->done(0); |
bb57f0c66 drivers/block/flo... |
1184 1185 1186 1187 1188 1189 |
FDCS->reset = 1; /* * convenient way to return to * redo without too much hassle * (deep stack et al.) */ |
1da177e4c Linux-2.6.12-rc2 |
1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 |
return; } } else perp_mode = 0; if (FDCS->perp_mode == perp_mode) return; if (FDCS->version >= FDC_82077_ORIG) { output_byte(FD_PERPENDICULAR); output_byte(perp_mode); FDCS->perp_mode = perp_mode; } else if (perp_mode) { DPRINT("perpendicular mode not supported by this FDC. "); } } /* perpendicular_mode */ static int fifo_depth = 0xa; static int no_fifo; static int fdc_configure(void) { /* Turn on FIFO */ output_byte(FD_CONFIGURE); if (need_more_output() != MORE_OUTPUT) return 0; output_byte(0); output_byte(0x10 | (no_fifo & 0x20) | (fifo_depth & 0xf)); output_byte(0); /* pre-compensation from track 0 upwards */ return 1; } #define NOMINAL_DTR 500 /* Issue a "SPECIFY" command to set the step rate time, head unload time, * head load time, and DMA disable flag to values needed by floppy. * * The value "dtr" is the data transfer rate in Kbps. It is needed * to account for the data rate-based scaling done by the 82072 and 82077 * FDC types. This parameter is ignored for other types of FDCs (i.e. * 8272a). * * Note that changing the data transfer rate has a (probably deleterious) * effect on the parameters subject to scaling for 82072/82077 FDCs, so * fdc_specify is called again after each data transfer rate * change. * * srt: 1000 to 16000 in microseconds * hut: 16 to 240 milliseconds * hlt: 2 to 254 milliseconds * * These values are rounded up to the next highest available delay time. */ static void fdc_specify(void) { |
06f748c47 floppy: do a very... |
1246 1247 1248 1249 1250 |
unsigned char spec1; unsigned char spec2; unsigned long srt; unsigned long hlt; unsigned long hut; |
1da177e4c Linux-2.6.12-rc2 |
1251 1252 1253 1254 1255 1256 1257 1258 |
unsigned long dtr = NOMINAL_DTR; unsigned long scale_dtr = NOMINAL_DTR; int hlt_max_code = 0x7f; int hut_max_code = 0xf; if (FDCS->need_configure && FDCS->version >= FDC_82072A) { fdc_configure(); FDCS->need_configure = 0; |
1da177e4c Linux-2.6.12-rc2 |
1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 |
} switch (raw_cmd->rate & 0x03) { case 3: dtr = 1000; break; case 1: dtr = 300; if (FDCS->version >= FDC_82078) { /* chose the default rate table, not the one * where 1 = 2 Mbps */ output_byte(FD_DRIVESPEC); if (need_more_output() == MORE_OUTPUT) { output_byte(UNIT(current_drive)); output_byte(0xc0); } } break; case 2: dtr = 250; break; } if (FDCS->version >= FDC_82072) { scale_dtr = dtr; hlt_max_code = 0x00; /* 0==256msec*dtr0/dtr (not linear!) */ hut_max_code = 0x0; /* 0==256msec*dtr0/dtr (not linear!) */ } /* Convert step rate from microseconds to milliseconds and 4 bits */ |
061837bc8 drivers/block: Us... |
1289 |
srt = 16 - DIV_ROUND_UP(DP->srt * scale_dtr / 1000, NOMINAL_DTR); |
a81ee5447 drivers/block/flo... |
1290 |
if (slow_floppy) |
1da177e4c Linux-2.6.12-rc2 |
1291 |
srt = srt / 4; |
a81ee5447 drivers/block/flo... |
1292 |
|
1da177e4c Linux-2.6.12-rc2 |
1293 1294 |
SUPBOUND(srt, 0xf); INFBOUND(srt, 0); |
061837bc8 drivers/block: Us... |
1295 |
hlt = DIV_ROUND_UP(DP->hlt * scale_dtr / 2, NOMINAL_DTR); |
1da177e4c Linux-2.6.12-rc2 |
1296 1297 1298 1299 |
if (hlt < 0x01) hlt = 0x01; else if (hlt > 0x7f) hlt = hlt_max_code; |
061837bc8 drivers/block: Us... |
1300 |
hut = DIV_ROUND_UP(DP->hut * scale_dtr / 16, NOMINAL_DTR); |
1da177e4c Linux-2.6.12-rc2 |
1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 |
if (hut < 0x1) hut = 0x1; else if (hut > 0xf) hut = hut_max_code; spec1 = (srt << 4) | hut; spec2 = (hlt << 1) | (use_virtual_dma & 1); /* If these parameters did not change, just return with success */ if (FDCS->spec1 != spec1 || FDCS->spec2 != spec2) { /* Go ahead and set spec1 and spec2 */ output_byte(FD_SPECIFY); output_byte(FDCS->spec1 = spec1); output_byte(FDCS->spec2 = spec2); } } /* fdc_specify */ /* Set the FDC's data transfer rate on behalf of the specified drive. * NOTE: with 82072/82077 FDCs, changing the data rate requires a reissue * of the specify command (i.e. using the fdc_specify function). */ static int fdc_dtr(void) { /* If data rate not already set to desired value, set it. */ if ((raw_cmd->rate & 3) == FDCS->dtr) return 0; /* Set dtr */ fd_outb(raw_cmd->rate & 3, FD_DCR); /* TODO: some FDC/drive combinations (C&T 82C711 with TEAC 1.2MB) * need a stabilization period of several milliseconds to be * enforced after data rate changes before R/W operations. * Pause 5 msec to avoid trouble. (Needs to be 2 jiffies) */ FDCS->dtr = raw_cmd->rate & 3; |
75ddb38f0 floppy: don't use... |
1337 |
return fd_wait_for_completion(jiffies + 2UL * HZ / 100, floppy_ready); |
1da177e4c Linux-2.6.12-rc2 |
1338 1339 1340 1341 |
} /* fdc_dtr */ static void tell_sector(void) { |
b46df356d drivers/block/flo... |
1342 1343 |
pr_cont(": track %d, head %d, sector %d, size %d", R_TRACK, R_HEAD, R_SECTOR, R_SIZECODE); |
1da177e4c Linux-2.6.12-rc2 |
1344 |
} /* tell_sector */ |
b46df356d drivers/block/flo... |
1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 |
static void print_errors(void) { DPRINT(""); if (ST0 & ST0_ECE) { pr_cont("Recalibrate failed!"); } else if (ST2 & ST2_CRC) { pr_cont("data CRC error"); tell_sector(); } else if (ST1 & ST1_CRC) { pr_cont("CRC error"); tell_sector(); } else if ((ST1 & (ST1_MAM | ST1_ND)) || (ST2 & ST2_MAM)) { if (!probing) { pr_cont("sector not found"); tell_sector(); } else pr_cont("probe failed..."); } else if (ST2 & ST2_WC) { /* seek error */ pr_cont("wrong cylinder"); } else if (ST2 & ST2_BC) { /* cylinder marked as bad */ pr_cont("bad cylinder"); } else { pr_cont("unknown error. ST[0..2] are: 0x%x 0x%x 0x%x", ST0, ST1, ST2); tell_sector(); } pr_cont(" "); } |
1da177e4c Linux-2.6.12-rc2 |
1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 |
/* * OK, this error interpreting routine is called after a * DMA read/write has succeeded * or failed, so we check the results, and copy any buffers. * hhb: Added better error reporting. * ak: Made this into a separate routine. */ static int interpret_errors(void) { char bad; if (inr != 7) { |
891eda80a drivers/block/flo... |
1387 1388 |
DPRINT("-- FDC reply error "); |
1da177e4c Linux-2.6.12-rc2 |
1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 |
FDCS->reset = 1; return 1; } /* check IC to find cause of interrupt */ switch (ST0 & ST0_INTR) { case 0x40: /* error occurred during command execution */ if (ST1 & ST1_EOC) return 0; /* occurs with pseudo-DMA */ bad = 1; if (ST1 & ST1_WP) { DPRINT("Drive is write protected "); |
e02985361 drivers/block/flo... |
1402 |
clear_bit(FD_DISK_WRITABLE_BIT, &DRS->flags); |
1da177e4c Linux-2.6.12-rc2 |
1403 1404 1405 |
cont->done(0); bad = 2; } else if (ST1 & ST1_ND) { |
e02985361 drivers/block/flo... |
1406 |
set_bit(FD_NEED_TWADDLE_BIT, &DRS->flags); |
1da177e4c Linux-2.6.12-rc2 |
1407 1408 1409 1410 1411 1412 |
} else if (ST1 & ST1_OR) { if (DP->flags & FTD_MSG) DPRINT("Over/Underrun - retrying "); bad = 0; } else if (*errors >= DP->max_errors.reporting) { |
b46df356d drivers/block/flo... |
1413 |
print_errors(); |
1da177e4c Linux-2.6.12-rc2 |
1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 |
} if (ST2 & ST2_WC || ST2 & ST2_BC) /* wrong cylinder => recal */ DRS->track = NEED_2_RECAL; return bad; case 0x80: /* invalid command given */ DPRINT("Invalid FDC command given! "); cont->done(0); return 2; case 0xc0: DPRINT("Abnormal termination caused by polling "); cont->error(); return 2; default: /* (0) Normal command termination */ return 0; } } /* * This routine is called when everything should be correctly set up * for the transfer (i.e. floppy motor is on, the correct floppy is * selected, and the head is sitting on the right track). */ static void setup_rw_floppy(void) { |
06f748c47 floppy: do a very... |
1441 1442 1443 1444 |
int i; int r; int flags; int dflags; |
1da177e4c Linux-2.6.12-rc2 |
1445 |
unsigned long ready_date; |
75ddb38f0 floppy: don't use... |
1446 |
void (*function)(void); |
1da177e4c Linux-2.6.12-rc2 |
1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 |
flags = raw_cmd->flags; if (flags & (FD_RAW_READ | FD_RAW_WRITE)) flags |= FD_RAW_INTR; if ((flags & FD_RAW_SPIN) && !(flags & FD_RAW_NO_MOTOR)) { ready_date = DRS->spinup_date + DP->spinup; /* If spinup will take a long time, rerun scandrives * again just before spinup completion. Beware that * after scandrives, we must again wait for selection. */ |
50297cbf0 [PATCH] drivers/b... |
1458 |
if (time_after(ready_date, jiffies + DP->select_delay)) { |
1da177e4c Linux-2.6.12-rc2 |
1459 |
ready_date -= DP->select_delay; |
75ddb38f0 floppy: don't use... |
1460 |
function = floppy_start; |
1da177e4c Linux-2.6.12-rc2 |
1461 |
} else |
75ddb38f0 floppy: don't use... |
1462 |
function = setup_rw_floppy; |
1da177e4c Linux-2.6.12-rc2 |
1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 |
/* wait until the floppy is spinning fast enough */ if (fd_wait_for_completion(ready_date, function)) return; } dflags = DRS->flags; if ((flags & FD_RAW_READ) || (flags & FD_RAW_WRITE)) setup_DMA(); if (flags & FD_RAW_INTR) do_floppy = main_command_interrupt; r = 0; for (i = 0; i < raw_cmd->cmd_count; i++) r |= output_byte(raw_cmd->cmd[i]); |
ded2863d0 drivers/block/flo... |
1479 |
debugt(__func__, "rw_command"); |
1da177e4c Linux-2.6.12-rc2 |
1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 |
if (r) { cont->error(); reset_fdc(); return; } if (!(flags & FD_RAW_INTR)) { inr = result(); cont->interrupt(); } else if (flags & FD_RAW_NEED_DISK) |
75ddb38f0 floppy: don't use... |
1491 |
fd_watchdog(); |
1da177e4c Linux-2.6.12-rc2 |
1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 |
} static int blind_seek; /* * This is the routine called after every seek (or recalibrate) interrupt * from the floppy controller. */ static void seek_interrupt(void) { |
ded2863d0 drivers/block/flo... |
1502 |
debugt(__func__, ""); |
1da177e4c Linux-2.6.12-rc2 |
1503 1504 1505 1506 1507 1508 1509 1510 1511 |
if (inr != 2 || (ST0 & 0xF8) != 0x20) { DPRINT("seek failed "); DRS->track = NEED_2_RECAL; cont->error(); cont->redo(); return; } if (DRS->track >= 0 && DRS->track != ST1 && !blind_seek) { |
87f530d8f drivers/block/flo... |
1512 1513 1514 1515 1516 |
debug_dcl(DP->flags, "clearing NEWCHANGE flag because of effective seek "); debug_dcl(DP->flags, "jiffies=%lu ", jiffies); |
e02985361 drivers/block/flo... |
1517 1518 |
clear_bit(FD_DISK_NEWCHANGE_BIT, &DRS->flags); /* effective seek */ |
1da177e4c Linux-2.6.12-rc2 |
1519 1520 1521 1522 1523 1524 1525 1526 |
DRS->select_date = jiffies; } DRS->track = ST1; floppy_ready(); } static void check_wp(void) { |
e02985361 drivers/block/flo... |
1527 1528 |
if (test_bit(FD_VERIFY_BIT, &DRS->flags)) { /* check write protection */ |
1da177e4c Linux-2.6.12-rc2 |
1529 1530 1531 1532 1533 1534 |
output_byte(FD_GETSTATUS); output_byte(UNIT(current_drive)); if (result() != 1) { FDCS->reset = 1; return; } |
e02985361 drivers/block/flo... |
1535 1536 |
clear_bit(FD_VERIFY_BIT, &DRS->flags); clear_bit(FD_NEED_TWADDLE_BIT, &DRS->flags); |
87f530d8f drivers/block/flo... |
1537 1538 1539 1540 1541 |
debug_dcl(DP->flags, "checking whether disk is write protected "); debug_dcl(DP->flags, "wp=%x ", ST3 & 0x40); |
1da177e4c Linux-2.6.12-rc2 |
1542 |
if (!(ST3 & 0x40)) |
e02985361 drivers/block/flo... |
1543 |
set_bit(FD_DISK_WRITABLE_BIT, &DRS->flags); |
1da177e4c Linux-2.6.12-rc2 |
1544 |
else |
e02985361 drivers/block/flo... |
1545 |
clear_bit(FD_DISK_WRITABLE_BIT, &DRS->flags); |
1da177e4c Linux-2.6.12-rc2 |
1546 1547 1548 1549 1550 1551 1552 1553 |
} } static void seek_floppy(void) { int track; blind_seek = 0; |
ded2863d0 drivers/block/flo... |
1554 1555 |
debug_dcl(DP->flags, "calling disk change from %s ", __func__); |
1da177e4c Linux-2.6.12-rc2 |
1556 |
|
e02985361 drivers/block/flo... |
1557 |
if (!test_bit(FD_DISK_NEWCHANGE_BIT, &DRS->flags) && |
1da177e4c Linux-2.6.12-rc2 |
1558 1559 1560 1561 1562 |
disk_change(current_drive) && (raw_cmd->flags & FD_RAW_NEED_DISK)) { /* the media changed flag should be cleared after the seek. * If it isn't, this means that there is really no disk in * the drive. */ |
e02985361 drivers/block/flo... |
1563 |
set_bit(FD_DISK_CHANGED_BIT, &DRS->flags); |
1da177e4c Linux-2.6.12-rc2 |
1564 1565 1566 1567 1568 1569 1570 |
cont->done(0); cont->redo(); return; } if (DRS->track <= NEED_1_RECAL) { recalibrate_floppy(); return; |
e02985361 drivers/block/flo... |
1571 |
} else if (test_bit(FD_DISK_NEWCHANGE_BIT, &DRS->flags) && |
1da177e4c Linux-2.6.12-rc2 |
1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 |
(raw_cmd->flags & FD_RAW_NEED_DISK) && (DRS->track <= NO_TRACK || DRS->track == raw_cmd->track)) { /* we seek to clear the media-changed condition. Does anybody * know a more elegant way, which works on all drives? */ if (raw_cmd->track) track = raw_cmd->track - 1; else { if (DP->flags & FD_SILENT_DCL_CLEAR) { set_dor(fdc, ~(0x10 << UNIT(current_drive)), 0); blind_seek = 1; raw_cmd->flags |= FD_RAW_NEED_SEEK; } track = 1; } } else { check_wp(); if (raw_cmd->track != DRS->track && (raw_cmd->flags & FD_RAW_NEED_SEEK)) track = raw_cmd->track; else { setup_rw_floppy(); return; } } do_floppy = seek_interrupt; output_byte(FD_SEEK); output_byte(UNIT(current_drive)); |
2300f90e3 drivers/block/flo... |
1600 1601 1602 1603 |
if (output_byte(track) < 0) { reset_fdc(); return; } |
ded2863d0 drivers/block/flo... |
1604 |
debugt(__func__, ""); |
1da177e4c Linux-2.6.12-rc2 |
1605 1606 1607 1608 |
} static void recal_interrupt(void) { |
ded2863d0 drivers/block/flo... |
1609 |
debugt(__func__, ""); |
1da177e4c Linux-2.6.12-rc2 |
1610 1611 1612 1613 1614 |
if (inr != 2) FDCS->reset = 1; else if (ST0 & ST0_ECE) { switch (DRS->track) { case NEED_1_RECAL: |
ded2863d0 drivers/block/flo... |
1615 |
debugt(__func__, "need 1 recal"); |
1da177e4c Linux-2.6.12-rc2 |
1616 1617 1618 1619 1620 1621 1622 1623 |
/* after a second recalibrate, we still haven't * reached track 0. Probably no drive. Raise an * error, as failing immediately might upset * computers possessed by the Devil :-) */ cont->error(); cont->redo(); return; case NEED_2_RECAL: |
ded2863d0 drivers/block/flo... |
1624 |
debugt(__func__, "need 2 recal"); |
1da177e4c Linux-2.6.12-rc2 |
1625 1626 1627 1628 1629 1630 |
/* If we already did a recalibrate, * and we are not at track 0, this * means we have moved. (The only way * not to move at recalibration is to * be already at track 0.) Clear the * new change flag */ |
87f530d8f drivers/block/flo... |
1631 1632 1633 |
debug_dcl(DP->flags, "clearing NEWCHANGE flag because of second recalibrate "); |
1da177e4c Linux-2.6.12-rc2 |
1634 |
|
e02985361 drivers/block/flo... |
1635 |
clear_bit(FD_DISK_NEWCHANGE_BIT, &DRS->flags); |
1da177e4c Linux-2.6.12-rc2 |
1636 1637 1638 |
DRS->select_date = jiffies; /* fall through */ default: |
ded2863d0 drivers/block/flo... |
1639 |
debugt(__func__, "default"); |
1da177e4c Linux-2.6.12-rc2 |
1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 |
/* Recalibrate moves the head by at * most 80 steps. If after one * recalibrate we don't have reached * track 0, this might mean that we * started beyond track 80. Try * again. */ DRS->track = NEED_1_RECAL; break; } } else DRS->track = ST1; floppy_ready(); } static void print_result(char *message, int inr) { int i; DPRINT("%s ", message); if (inr >= 0) for (i = 0; i < inr; i++) |
b46df356d drivers/block/flo... |
1661 1662 1663 |
pr_cont("repl[%d]=%x ", i, reply_buffer[i]); pr_cont(" "); |
1da177e4c Linux-2.6.12-rc2 |
1664 1665 1666 |
} /* interrupt handler. Note that this can be called externally on the Sparc */ |
7d12e780e IRQ: Maintain reg... |
1667 |
irqreturn_t floppy_interrupt(int irq, void *dev_id) |
1da177e4c Linux-2.6.12-rc2 |
1668 |
{ |
1da177e4c Linux-2.6.12-rc2 |
1669 1670 |
int do_print; unsigned long f; |
06f748c47 floppy: do a very... |
1671 |
void (*handler)(void) = do_floppy; |
1da177e4c Linux-2.6.12-rc2 |
1672 1673 1674 1675 1676 1677 1678 |
lasthandler = handler; interruptjiffies = jiffies; f = claim_dma_lock(); fd_disable_dma(); release_dma_lock(f); |
1da177e4c Linux-2.6.12-rc2 |
1679 1680 1681 |
do_floppy = NULL; if (fdc >= N_FDC || FDCS->address == -1) { /* we don't even know which FDC is the culprit */ |
b46df356d drivers/block/flo... |
1682 1683 1684 1685 |
pr_info("DOR0=%x ", fdc_state[0].dor); pr_info("floppy interrupt on bizarre fdc %d ", fdc); |
1ebddd85a drivers/block/flo... |
1686 1687 |
pr_info("handler=%pf ", handler); |
275176bc2 drivers/block/flo... |
1688 |
is_alive(__func__, "bizarre fdc"); |
1da177e4c Linux-2.6.12-rc2 |
1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 |
return IRQ_NONE; } FDCS->reset = 0; /* We have to clear the reset flag here, because apparently on boxes * with level triggered interrupts (PS/2, Sparc, ...), it is needed to * emit SENSEI's to clear the interrupt line. And FDCS->reset blocks the * emission of the SENSEI's. * It is OK to emit floppy commands because we are in an interrupt * handler here, and thus we have to fear no interference of other * activity. */ |
29f1c7848 drivers/block/flo... |
1701 |
do_print = !handler && print_unex && initialized; |
1da177e4c Linux-2.6.12-rc2 |
1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 |
inr = result(); if (do_print) print_result("unexpected interrupt", inr); if (inr == 0) { int max_sensei = 4; do { output_byte(FD_SENSEI); inr = result(); if (do_print) print_result("sensei", inr); max_sensei--; |
c529730a9 drivers/block/flo... |
1714 1715 |
} while ((ST0 & 0x83) != UNIT(current_drive) && inr == 2 && max_sensei); |
1da177e4c Linux-2.6.12-rc2 |
1716 1717 1718 1719 1720 1721 |
} if (!handler) { FDCS->reset = 1; return IRQ_NONE; } schedule_bh(handler); |
275176bc2 drivers/block/flo... |
1722 |
is_alive(__func__, "normal interrupt end"); |
1da177e4c Linux-2.6.12-rc2 |
1723 1724 1725 1726 1727 1728 1729 |
/* FIXME! Was it really for us? */ return IRQ_HANDLED; } static void recalibrate_floppy(void) { |
ded2863d0 drivers/block/flo... |
1730 |
debugt(__func__, ""); |
1da177e4c Linux-2.6.12-rc2 |
1731 1732 |
do_floppy = recal_interrupt; output_byte(FD_RECALIBRATE); |
15b2630c5 drivers/block/flo... |
1733 |
if (output_byte(UNIT(current_drive)) < 0) |
2300f90e3 drivers/block/flo... |
1734 |
reset_fdc(); |
1da177e4c Linux-2.6.12-rc2 |
1735 1736 1737 1738 1739 1740 1741 |
} /* * Must do 4 FD_SENSEIs after reset because of ``drive polling''. */ static void reset_interrupt(void) { |
ded2863d0 drivers/block/flo... |
1742 |
debugt(__func__, ""); |
1da177e4c Linux-2.6.12-rc2 |
1743 1744 |
result(); /* get the status ready for set_fdc */ if (FDCS->reset) { |
1ebddd85a drivers/block/flo... |
1745 1746 |
pr_info("reset set in interrupt, calling %pf ", cont->error); |
1da177e4c Linux-2.6.12-rc2 |
1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 |
cont->error(); /* a reset just after a reset. BAD! */ } cont->redo(); } /* * reset is done by pulling bit 2 of DOR low for a while (old FDCs), * or by setting the self clearing bit 7 of STATUS (newer FDCs) */ static void reset_fdc(void) { unsigned long flags; do_floppy = reset_interrupt; FDCS->reset = 0; reset_fdc_info(0); /* Pseudo-DMA may intercept 'reset finished' interrupt. */ /* Irrelevant for systems with true DMA (i386). */ flags = claim_dma_lock(); fd_disable_dma(); release_dma_lock(flags); if (FDCS->version >= FDC_82072A) fd_outb(0x80 | (FDCS->dtr & 3), FD_STATUS); else { fd_outb(FDCS->dor & ~0x04, FD_DOR); udelay(FD_RESET_DELAY); fd_outb(FDCS->dor, FD_DOR); } } static void show_floppy(void) { int i; |
b46df356d drivers/block/flo... |
1783 1784 1785 1786 1787 1788 |
pr_info(" "); pr_info("floppy driver state "); pr_info("------------------- "); |
1ebddd85a drivers/block/flo... |
1789 1790 |
pr_info("now=%lu last interrupt=%lu diff=%lu last called handler=%pf ", |
b46df356d drivers/block/flo... |
1791 1792 |
jiffies, interruptjiffies, jiffies - interruptjiffies, lasthandler); |
1da177e4c Linux-2.6.12-rc2 |
1793 |
|
b46df356d drivers/block/flo... |
1794 1795 1796 1797 |
pr_info("timeout_message=%s ", timeout_message); pr_info("last output bytes: "); |
1da177e4c Linux-2.6.12-rc2 |
1798 |
for (i = 0; i < OLOGSIZE; i++) |
b46df356d drivers/block/flo... |
1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 |
pr_info("%2x %2x %lu ", output_log[(i + output_log_pos) % OLOGSIZE].data, output_log[(i + output_log_pos) % OLOGSIZE].status, output_log[(i + output_log_pos) % OLOGSIZE].jiffies); pr_info("last result at %lu ", resultjiffies); pr_info("last redo_fd_request at %lu ", lastredo); print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 1, reply_buffer, resultsize, true); |
1da177e4c Linux-2.6.12-rc2 |
1810 |
|
b46df356d drivers/block/flo... |
1811 1812 1813 1814 |
pr_info("status=%x ", fd_inb(FD_STATUS)); pr_info("fdc_busy=%lu ", fdc_busy); |
1da177e4c Linux-2.6.12-rc2 |
1815 |
if (do_floppy) |
1ebddd85a drivers/block/flo... |
1816 1817 |
pr_info("do_floppy=%pf ", do_floppy); |
365970a1e WorkStruct: Merge... |
1818 |
if (work_pending(&floppy_work)) |
1ebddd85a drivers/block/flo... |
1819 1820 |
pr_info("floppy_work.func=%pf ", floppy_work.func); |
070ad7e79 floppy: convert t... |
1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 |
if (delayed_work_pending(&fd_timer)) pr_info("delayed work.function=%p expires=%ld ", fd_timer.work.func, fd_timer.timer.expires - jiffies); if (delayed_work_pending(&fd_timeout)) pr_info("timer_function=%p expires=%ld ", fd_timeout.work.func, fd_timeout.timer.expires - jiffies); |
b46df356d drivers/block/flo... |
1831 1832 1833 1834 1835 1836 1837 1838 |
pr_info("cont=%p ", cont); pr_info("current_req=%p ", current_req); pr_info("command_status=%d ", command_status); pr_info(" "); |
1da177e4c Linux-2.6.12-rc2 |
1839 |
} |
070ad7e79 floppy: convert t... |
1840 |
static void floppy_shutdown(struct work_struct *arg) |
1da177e4c Linux-2.6.12-rc2 |
1841 1842 |
{ unsigned long flags; |
29f1c7848 drivers/block/flo... |
1843 |
if (initialized) |
1da177e4c Linux-2.6.12-rc2 |
1844 1845 |
show_floppy(); cancel_activity(); |
1da177e4c Linux-2.6.12-rc2 |
1846 1847 1848 1849 1850 |
flags = claim_dma_lock(); fd_disable_dma(); release_dma_lock(flags); /* avoid dma going to a random drive after shutdown */ |
29f1c7848 drivers/block/flo... |
1851 |
if (initialized) |
1da177e4c Linux-2.6.12-rc2 |
1852 1853 1854 1855 1856 1857 1858 |
DPRINT("floppy timeout called "); FDCS->reset = 1; if (cont) { cont->done(0); cont->redo(); /* this will recall reset when needed */ } else { |
b46df356d drivers/block/flo... |
1859 1860 |
pr_info("no cont in shutdown! "); |
1da177e4c Linux-2.6.12-rc2 |
1861 1862 |
process_fd_request(); } |
275176bc2 drivers/block/flo... |
1863 |
is_alive(__func__, ""); |
1da177e4c Linux-2.6.12-rc2 |
1864 |
} |
1da177e4c Linux-2.6.12-rc2 |
1865 |
/* start motor, check media-changed condition and write protection */ |
06f748c47 floppy: do a very... |
1866 |
static int start_motor(void (*function)(void)) |
1da177e4c Linux-2.6.12-rc2 |
1867 |
{ |
06f748c47 floppy: do a very... |
1868 1869 |
int mask; int data; |
1da177e4c Linux-2.6.12-rc2 |
1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 |
mask = 0xfc; data = UNIT(current_drive); if (!(raw_cmd->flags & FD_RAW_NO_MOTOR)) { if (!(FDCS->dor & (0x10 << UNIT(current_drive)))) { set_debugt(); /* no read since this drive is running */ DRS->first_read_date = 0; /* note motor start time if motor is not yet running */ DRS->spinup_date = jiffies; data |= (0x10 << UNIT(current_drive)); } } else if (FDCS->dor & (0x10 << UNIT(current_drive))) mask &= ~(0x10 << UNIT(current_drive)); /* starts motor and selects floppy */ del_timer(motor_off_timer + current_drive); set_dor(fdc, mask, data); /* wait_for_completion also schedules reset if needed. */ |
d7b2b2ecd drivers/block/flo... |
1890 |
return fd_wait_for_completion(DRS->select_date + DP->select_delay, |
75ddb38f0 floppy: don't use... |
1891 |
function); |
1da177e4c Linux-2.6.12-rc2 |
1892 1893 1894 1895 |
} static void floppy_ready(void) { |
045f98363 drivers/block/flo... |
1896 1897 1898 1899 |
if (FDCS->reset) { reset_fdc(); return; } |
1da177e4c Linux-2.6.12-rc2 |
1900 1901 1902 1903 |
if (start_motor(floppy_ready)) return; if (fdc_dtr()) return; |
87f530d8f drivers/block/flo... |
1904 1905 |
debug_dcl(DP->flags, "calling disk change from floppy_ready "); |
1da177e4c Linux-2.6.12-rc2 |
1906 1907 |
if (!(raw_cmd->flags & FD_RAW_NO_MOTOR) && disk_change(current_drive) && !DP->select_delay) |
bb57f0c66 drivers/block/flo... |
1908 1909 |
twaddle(); /* this clears the dcl on certain * drive/controller combinations */ |
1da177e4c Linux-2.6.12-rc2 |
1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 |
#ifdef fd_chose_dma_mode if ((raw_cmd->flags & FD_RAW_READ) || (raw_cmd->flags & FD_RAW_WRITE)) { unsigned long flags = claim_dma_lock(); fd_chose_dma_mode(raw_cmd->kernel_data, raw_cmd->length); release_dma_lock(flags); } #endif if (raw_cmd->flags & (FD_RAW_NEED_SEEK | FD_RAW_NEED_DISK)) { perpendicular_mode(); fdc_specify(); /* must be done here because of hut, hlt ... */ seek_floppy(); } else { if ((raw_cmd->flags & FD_RAW_READ) || (raw_cmd->flags & FD_RAW_WRITE)) fdc_specify(); setup_rw_floppy(); } } static void floppy_start(void) { |
73507e6cd drivers/block/flo... |
1933 |
reschedule_timeout(current_reqD, "floppy start"); |
1da177e4c Linux-2.6.12-rc2 |
1934 1935 |
scandrives(); |
87f530d8f drivers/block/flo... |
1936 1937 |
debug_dcl(DP->flags, "setting NEWCHANGE in floppy_start "); |
e02985361 drivers/block/flo... |
1938 |
set_bit(FD_DISK_NEWCHANGE_BIT, &DRS->flags); |
1da177e4c Linux-2.6.12-rc2 |
1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 |
floppy_ready(); } /* * ======================================================================== * here ends the bottom half. Exported routines are: * floppy_start, floppy_off, floppy_ready, lock_fdc, unlock_fdc, set_fdc, * start_motor, reset_fdc, reset_fdc_info, interpret_errors. * Initialization also uses output_byte, result, set_dor, floppy_interrupt * and set_dor. * ======================================================================== */ /* * General purpose continuations. * ============================== */ static void do_wakeup(void) { |
73507e6cd drivers/block/flo... |
1958 |
reschedule_timeout(MAXTIMEOUT, "do wakeup"); |
1da177e4c Linux-2.6.12-rc2 |
1959 1960 1961 1962 |
cont = NULL; command_status += 2; wake_up(&command_done); } |
3b06c21e8 floppy: make cont... |
1963 |
static const struct cont_t wakeup_cont = { |
1da177e4c Linux-2.6.12-rc2 |
1964 1965 1966 |
.interrupt = empty, .redo = do_wakeup, .error = empty, |
06f748c47 floppy: do a very... |
1967 |
.done = (done_f)empty |
1da177e4c Linux-2.6.12-rc2 |
1968 |
}; |
3b06c21e8 floppy: make cont... |
1969 |
static const struct cont_t intr_cont = { |
1da177e4c Linux-2.6.12-rc2 |
1970 1971 1972 |
.interrupt = empty, .redo = process_fd_request, .error = empty, |
06f748c47 floppy: do a very... |
1973 |
.done = (done_f)empty |
1da177e4c Linux-2.6.12-rc2 |
1974 |
}; |
74f63f469 drivers/block/flo... |
1975 |
static int wait_til_done(void (*handler)(void), bool interruptible) |
1da177e4c Linux-2.6.12-rc2 |
1976 1977 1978 1979 |
{ int ret; schedule_bh(handler); |
b862f26fe floppy: use wait_... |
1980 1981 1982 1983 |
if (interruptible) wait_event_interruptible(command_done, command_status >= 2); else wait_event(command_done, command_status >= 2); |
1da177e4c Linux-2.6.12-rc2 |
1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 |
if (command_status < 2) { cancel_activity(); cont = &intr_cont; reset_fdc(); return -EINTR; } if (FDCS->reset) command_status = FD_COMMAND_ERROR; if (command_status == FD_COMMAND_OKAY) ret = 0; else ret = -EIO; command_status = FD_COMMAND_NONE; return ret; } static void generic_done(int result) { command_status = result; cont = &wakeup_cont; } static void generic_success(void) { cont->done(1); } static void generic_failure(void) { cont->done(0); } static void success_and_wakeup(void) { generic_success(); cont->redo(); } /* * formatting and rw support. * ========================== */ static int next_valid_format(void) { int probed_format; probed_format = DRS->probed_format; while (1) { if (probed_format >= 8 || !DP->autodetect[probed_format]) { DRS->probed_format = 0; return 1; } if (floppy_type[DP->autodetect[probed_format]].sect) { DRS->probed_format = probed_format; return 0; } probed_format++; } } static void bad_flp_intr(void) { int err_count; if (probing) { DRS->probed_format++; if (!next_valid_format()) return; } err_count = ++(*errors); INFBOUND(DRWE->badness, err_count); if (err_count > DP->max_errors.abort) cont->done(0); if (err_count > DP->max_errors.reset) FDCS->reset = 1; else if (err_count > DP->max_errors.recal) DRS->track = NEED_2_RECAL; } static void set_floppy(int drive) { int type = ITYPE(UDRS->fd_device); |
06f748c47 floppy: do a very... |
2069 |
|
1da177e4c Linux-2.6.12-rc2 |
2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 |
if (type) _floppy = floppy_type + type; else _floppy = current_type[drive]; } /* * formatting support. * =================== */ static void format_interrupt(void) { switch (interpret_errors()) { case 1: cont->error(); case 2: break; case 0: cont->done(1); } cont->redo(); } |
48c8cee61 drivers/block/flo... |
2092 |
#define FM_MODE(x, y) ((y) & ~(((x)->rate & 0x80) >> 1)) |
1da177e4c Linux-2.6.12-rc2 |
2093 |
#define CT(x) ((x) | 0xc0) |
48c8cee61 drivers/block/flo... |
2094 |
|
1da177e4c Linux-2.6.12-rc2 |
2095 2096 |
static void setup_format_params(int track) { |
06f748c47 floppy: do a very... |
2097 2098 2099 2100 2101 |
int n; int il; int count; int head_shift; int track_shift; |
1da177e4c Linux-2.6.12-rc2 |
2102 2103 2104 |
struct fparm { unsigned char track, head, sect, size; } *here = (struct fparm *)floppy_track_buffer; |
1da177e4c Linux-2.6.12-rc2 |
2105 2106 2107 |
raw_cmd = &default_raw_cmd; raw_cmd->track = track; |
48c8cee61 drivers/block/flo... |
2108 2109 |
raw_cmd->flags = (FD_RAW_WRITE | FD_RAW_INTR | FD_RAW_SPIN | FD_RAW_NEED_DISK | FD_RAW_NEED_SEEK); |
1da177e4c Linux-2.6.12-rc2 |
2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 |
raw_cmd->rate = _floppy->rate & 0x43; raw_cmd->cmd_count = NR_F; COMMAND = FM_MODE(_floppy, FD_FORMAT); DR_SELECT = UNIT(current_drive) + PH_HEAD(_floppy, format_req.head); F_SIZECODE = FD_SIZECODE(_floppy); F_SECT_PER_TRACK = _floppy->sect << 2 >> F_SIZECODE; F_GAP = _floppy->fmt_gap; F_FILL = FD_FILL_BYTE; raw_cmd->kernel_data = floppy_track_buffer; raw_cmd->length = 4 * F_SECT_PER_TRACK; /* allow for about 30ms for data transport per track */ head_shift = (F_SECT_PER_TRACK + 5) / 6; /* a ``cylinder'' is two tracks plus a little stepping time */ track_shift = 2 * head_shift + 3; /* position of logical sector 1 on this track */ n = (track_shift * format_req.track + head_shift * format_req.head) % F_SECT_PER_TRACK; /* determine interleave */ il = 1; if (_floppy->fmt_gap < 0x22) il++; /* initialize field */ for (count = 0; count < F_SECT_PER_TRACK; ++count) { here[count].track = format_req.track; here[count].head = format_req.head; here[count].sect = 0; here[count].size = F_SIZECODE; } /* place logical sectors */ for (count = 1; count <= F_SECT_PER_TRACK; ++count) { here[n].sect = count; n = (n + il) % F_SECT_PER_TRACK; if (here[n].sect) { /* sector busy, find next free sector */ ++n; if (n >= F_SECT_PER_TRACK) { n -= F_SECT_PER_TRACK; while (here[n].sect) ++n; } } } |
9e49184c8 floppy: support a... |
2157 |
if (_floppy->stretch & FD_SECTBASEMASK) { |
1da177e4c Linux-2.6.12-rc2 |
2158 |
for (count = 0; count < F_SECT_PER_TRACK; count++) |
9e49184c8 floppy: support a... |
2159 |
here[count].sect += FD_SECTBASE(_floppy) - 1; |
1da177e4c Linux-2.6.12-rc2 |
2160 2161 2162 2163 2164 2165 2166 2167 |
} } static void redo_format(void) { buffer_track = -1; setup_format_params(format_req.track << STRETCH(_floppy)); floppy_start(); |
ded2863d0 drivers/block/flo... |
2168 |
debugt(__func__, "queue format request"); |
1da177e4c Linux-2.6.12-rc2 |
2169 |
} |
3b06c21e8 floppy: make cont... |
2170 |
static const struct cont_t format_cont = { |
1da177e4c Linux-2.6.12-rc2 |
2171 2172 2173 2174 2175 2176 2177 2178 2179 |
.interrupt = format_interrupt, .redo = redo_format, .error = bad_flp_intr, .done = generic_done }; static int do_format(int drive, struct format_descr *tmp_format_req) { int ret; |
a0c80efe5 floppy: fix lock_... |
2180 |
if (lock_fdc(drive)) |
52a0d61f6 drivers/block/flo... |
2181 |
return -EINTR; |
1da177e4c Linux-2.6.12-rc2 |
2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 |
set_floppy(drive); if (!_floppy || _floppy->track > DP->tracks || tmp_format_req->track >= _floppy->track || tmp_format_req->head >= _floppy->head || (_floppy->sect << 2) % (1 << FD_SIZECODE(_floppy)) || !_floppy->fmt_gap) { process_fd_request(); return -EINVAL; } format_req = *tmp_format_req; format_errors = 0; cont = &format_cont; errors = &format_errors; |
74f63f469 drivers/block/flo... |
2196 |
ret = wait_til_done(redo_format, true); |
55eee80c6 drivers/block/flo... |
2197 2198 |
if (ret == -EINTR) return -EINTR; |
1da177e4c Linux-2.6.12-rc2 |
2199 2200 2201 2202 2203 2204 2205 2206 |
process_fd_request(); return ret; } /* * Buffer read/write and support * ============================= */ |
1c5093ba0 blk_end_request: ... |
2207 |
static void floppy_end_request(struct request *req, int error) |
1da177e4c Linux-2.6.12-rc2 |
2208 2209 |
{ unsigned int nr_sectors = current_count_sectors; |
1c5093ba0 blk_end_request: ... |
2210 |
unsigned int drive = (unsigned long)req->rq_disk->private_data; |
1da177e4c Linux-2.6.12-rc2 |
2211 2212 |
/* current_count_sectors can be zero if transfer failed */ |
1c5093ba0 blk_end_request: ... |
2213 |
if (error) |
83096ebf1 block: convert to... |
2214 |
nr_sectors = blk_rq_cur_sectors(req); |
1c5093ba0 blk_end_request: ... |
2215 |
if (__blk_end_request(req, error, nr_sectors << 9)) |
1da177e4c Linux-2.6.12-rc2 |
2216 |
return; |
1da177e4c Linux-2.6.12-rc2 |
2217 2218 |
/* We're done with the request */ |
1c5093ba0 blk_end_request: ... |
2219 |
floppy_off(drive); |
1da177e4c Linux-2.6.12-rc2 |
2220 2221 2222 2223 2224 2225 2226 |
current_req = NULL; } /* new request_done. Can handle physical sectors which are smaller than a * logical buffer */ static void request_done(int uptodate) { |
1da177e4c Linux-2.6.12-rc2 |
2227 |
struct request *req = current_req; |
488211844 floppy: switch to... |
2228 |
struct request_queue *q; |
1da177e4c Linux-2.6.12-rc2 |
2229 2230 |
unsigned long flags; int block; |
73507e6cd drivers/block/flo... |
2231 |
char msg[sizeof("request done ") + sizeof(int) * 3]; |
1da177e4c Linux-2.6.12-rc2 |
2232 2233 |
probing = 0; |
73507e6cd drivers/block/flo... |
2234 2235 |
snprintf(msg, sizeof(msg), "request done %d", uptodate); reschedule_timeout(MAXTIMEOUT, msg); |
1da177e4c Linux-2.6.12-rc2 |
2236 2237 |
if (!req) { |
b46df356d drivers/block/flo... |
2238 2239 |
pr_info("floppy.c: no request in request_done "); |
1da177e4c Linux-2.6.12-rc2 |
2240 2241 |
return; } |
488211844 floppy: switch to... |
2242 |
q = req->q; |
1da177e4c Linux-2.6.12-rc2 |
2243 2244 2245 |
if (uptodate) { /* maintain values for invalidation on geometry * change */ |
83096ebf1 block: convert to... |
2246 |
block = current_count_sectors + blk_rq_pos(req); |
1da177e4c Linux-2.6.12-rc2 |
2247 2248 2249 2250 2251 2252 |
INFBOUND(DRS->maxblock, block); if (block > _floppy->sect) DRS->maxtrack = 1; /* unlock chained buffers */ spin_lock_irqsave(q->queue_lock, flags); |
1c5093ba0 blk_end_request: ... |
2253 |
floppy_end_request(req, 0); |
1da177e4c Linux-2.6.12-rc2 |
2254 2255 2256 2257 2258 2259 |
spin_unlock_irqrestore(q->queue_lock, flags); } else { if (rq_data_dir(req) == WRITE) { /* record write error information */ DRWE->write_errors++; if (DRWE->write_errors == 1) { |
83096ebf1 block: convert to... |
2260 |
DRWE->first_error_sector = blk_rq_pos(req); |
1da177e4c Linux-2.6.12-rc2 |
2261 2262 |
DRWE->first_error_generation = DRS->generation; } |
83096ebf1 block: convert to... |
2263 |
DRWE->last_error_sector = blk_rq_pos(req); |
1da177e4c Linux-2.6.12-rc2 |
2264 2265 2266 |
DRWE->last_error_generation = DRS->generation; } spin_lock_irqsave(q->queue_lock, flags); |
1c5093ba0 blk_end_request: ... |
2267 |
floppy_end_request(req, -EIO); |
1da177e4c Linux-2.6.12-rc2 |
2268 2269 2270 2271 2272 2273 2274 |
spin_unlock_irqrestore(q->queue_lock, flags); } } /* Interrupt handler evaluating the result of the r/w operation */ static void rw_interrupt(void) { |
06f748c47 floppy: do a very... |
2275 2276 2277 2278 |
int eoc; int ssize; int heads; int nr_sectors; |
1da177e4c Linux-2.6.12-rc2 |
2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 |
if (R_HEAD >= 2) { /* some Toshiba floppy controllers occasionnally seem to * return bogus interrupts after read/write operations, which * can be recognized by a bad head number (>= 2) */ return; } if (!DRS->first_read_date) DRS->first_read_date = jiffies; nr_sectors = 0; |
712e1de43 drivers/block/flo... |
2291 |
ssize = DIV_ROUND_UP(1 << SIZECODE, 4); |
1da177e4c Linux-2.6.12-rc2 |
2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 |
if (ST1 & ST1_EOC) eoc = 1; else eoc = 0; if (COMMAND & 0x80) heads = 2; else heads = 1; nr_sectors = (((R_TRACK - TRACK) * heads + R_HEAD - HEAD) * SECT_PER_TRACK + R_SECTOR - SECTOR + eoc) << SIZECODE >> 2; |
1da177e4c Linux-2.6.12-rc2 |
2306 |
if (nr_sectors / ssize > |
061837bc8 drivers/block: Us... |
2307 |
DIV_ROUND_UP(in_sector_offset + current_count_sectors, ssize)) { |
1da177e4c Linux-2.6.12-rc2 |
2308 2309 2310 |
DPRINT("long rw: %x instead of %lx ", nr_sectors, current_count_sectors); |
b46df356d drivers/block/flo... |
2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 |
pr_info("rs=%d s=%d ", R_SECTOR, SECTOR); pr_info("rh=%d h=%d ", R_HEAD, HEAD); pr_info("rt=%d t=%d ", R_TRACK, TRACK); pr_info("heads=%d eoc=%d ", heads, eoc); pr_info("spt=%d st=%d ss=%d ", SECT_PER_TRACK, fsector_t, ssize); pr_info("in_sector_offset=%d ", in_sector_offset); |
1da177e4c Linux-2.6.12-rc2 |
2324 |
} |
1da177e4c Linux-2.6.12-rc2 |
2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 |
nr_sectors -= in_sector_offset; INFBOUND(nr_sectors, 0); SUPBOUND(current_count_sectors, nr_sectors); switch (interpret_errors()) { case 2: cont->redo(); return; case 1: if (!current_count_sectors) { cont->error(); cont->redo(); return; } break; case 0: if (!current_count_sectors) { cont->redo(); return; } current_type[current_drive] = _floppy; floppy_sizes[TOMINOR(current_drive)] = _floppy->size; break; } if (probing) { if (DP->flags & FTD_MSG) DPRINT("Auto-detected floppy type %s in fd%d ", _floppy->name, current_drive); current_type[current_drive] = _floppy; floppy_sizes[TOMINOR(current_drive)] = _floppy->size; probing = 0; } if (CT(COMMAND) != FD_READ || |
b4f42e283 block: remove str... |
2362 |
raw_cmd->kernel_data == bio_data(current_req->bio)) { |
1da177e4c Linux-2.6.12-rc2 |
2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 |
/* transfer directly from buffer */ cont->done(1); } else if (CT(COMMAND) == FD_READ) { buffer_track = raw_cmd->track; buffer_drive = current_drive; INFBOUND(buffer_max, nr_sectors + fsector_t); } cont->redo(); } /* Compute maximal contiguous buffer size. */ static int buffer_chain_size(void) { |
7988613b0 block: Convert bi... |
2376 |
struct bio_vec bv; |
5705f7021 Introduce rq_for_... |
2377 2378 |
int size; struct req_iterator iter; |
1da177e4c Linux-2.6.12-rc2 |
2379 2380 2381 2382 |
char *base; base = bio_data(current_req->bio); size = 0; |
5705f7021 Introduce rq_for_... |
2383 |
rq_for_each_segment(bv, current_req, iter) { |
7988613b0 block: Convert bi... |
2384 |
if (page_address(bv.bv_page) + bv.bv_offset != base + size) |
5705f7021 Introduce rq_for_... |
2385 |
break; |
1da177e4c Linux-2.6.12-rc2 |
2386 |
|
7988613b0 block: Convert bi... |
2387 |
size += bv.bv_len; |
1da177e4c Linux-2.6.12-rc2 |
2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 |
} return size >> 9; } /* Compute the maximal transfer size */ static int transfer_size(int ssize, int max_sector, int max_size) { SUPBOUND(max_sector, fsector_t + max_size); /* alignment */ max_sector -= (max_sector % _floppy->sect) % ssize; /* transfer size, beginning not aligned */ current_count_sectors = max_sector - fsector_t; return max_sector; } /* * Move data from/to the track buffer to/from the buffer cache. */ static void copy_buffer(int ssize, int max_sector, int max_sector_2) { int remaining; /* number of transferred 512-byte sectors */ |
7988613b0 block: Convert bi... |
2413 |
struct bio_vec bv; |
06f748c47 floppy: do a very... |
2414 2415 |
char *buffer; char *dma_buffer; |
5705f7021 Introduce rq_for_... |
2416 2417 |
int size; struct req_iterator iter; |
1da177e4c Linux-2.6.12-rc2 |
2418 2419 2420 |
max_sector = transfer_size(ssize, min(max_sector, max_sector_2), |
83096ebf1 block: convert to... |
2421 |
blk_rq_sectors(current_req)); |
1da177e4c Linux-2.6.12-rc2 |
2422 2423 |
if (current_count_sectors <= 0 && CT(COMMAND) == FD_WRITE && |
83096ebf1 block: convert to... |
2424 |
buffer_max > fsector_t + blk_rq_sectors(current_req)) |
1da177e4c Linux-2.6.12-rc2 |
2425 |
current_count_sectors = min_t(int, buffer_max - fsector_t, |
83096ebf1 block: convert to... |
2426 |
blk_rq_sectors(current_req)); |
1da177e4c Linux-2.6.12-rc2 |
2427 2428 |
remaining = current_count_sectors << 9; |
1011c1b9f block: blk_rq_[cu... |
2429 |
if (remaining > blk_rq_bytes(current_req) && CT(COMMAND) == FD_WRITE) { |
1da177e4c Linux-2.6.12-rc2 |
2430 2431 |
DPRINT("in copy buffer "); |
b46df356d drivers/block/flo... |
2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 |
pr_info("current_count_sectors=%ld ", current_count_sectors); pr_info("remaining=%d ", remaining >> 9); pr_info("current_req->nr_sectors=%u ", blk_rq_sectors(current_req)); pr_info("current_req->current_nr_sectors=%u ", blk_rq_cur_sectors(current_req)); pr_info("max_sector=%d ", max_sector); pr_info("ssize=%d ", ssize); |
1da177e4c Linux-2.6.12-rc2 |
2446 |
} |
1da177e4c Linux-2.6.12-rc2 |
2447 2448 2449 2450 |
buffer_max = max(max_sector, buffer_max); dma_buffer = floppy_track_buffer + ((fsector_t - buffer_min) << 9); |
1011c1b9f block: blk_rq_[cu... |
2451 |
size = blk_rq_cur_bytes(current_req); |
1da177e4c Linux-2.6.12-rc2 |
2452 |
|
5705f7021 Introduce rq_for_... |
2453 2454 2455 |
rq_for_each_segment(bv, current_req, iter) { if (!remaining) break; |
1da177e4c Linux-2.6.12-rc2 |
2456 |
|
7988613b0 block: Convert bi... |
2457 |
size = bv.bv_len; |
5705f7021 Introduce rq_for_... |
2458 |
SUPBOUND(size, remaining); |
1da177e4c Linux-2.6.12-rc2 |
2459 |
|
7988613b0 block: Convert bi... |
2460 |
buffer = page_address(bv.bv_page) + bv.bv_offset; |
5705f7021 Introduce rq_for_... |
2461 2462 2463 2464 2465 |
if (dma_buffer + size > floppy_track_buffer + (max_buffer_sectors << 10) || dma_buffer < floppy_track_buffer) { DPRINT("buffer overrun in copy buffer %d ", |
b46df356d drivers/block/flo... |
2466 2467 2468 2469 2470 2471 2472 |
(int)((floppy_track_buffer - dma_buffer) >> 9)); pr_info("fsector_t=%d buffer_min=%d ", fsector_t, buffer_min); pr_info("current_count_sectors=%ld ", current_count_sectors); |
1da177e4c Linux-2.6.12-rc2 |
2473 |
if (CT(COMMAND) == FD_READ) |
b46df356d drivers/block/flo... |
2474 2475 |
pr_info("read "); |
5705f7021 Introduce rq_for_... |
2476 |
if (CT(COMMAND) == FD_WRITE) |
b46df356d drivers/block/flo... |
2477 2478 |
pr_info("write "); |
5705f7021 Introduce rq_for_... |
2479 |
break; |
1da177e4c Linux-2.6.12-rc2 |
2480 |
} |
5705f7021 Introduce rq_for_... |
2481 2482 2483 |
if (((unsigned long)buffer) % 512) DPRINT("%p buffer not aligned ", buffer); |
1a23d1333 drivers/block/flo... |
2484 |
|
5705f7021 Introduce rq_for_... |
2485 2486 2487 2488 2489 2490 2491 |
if (CT(COMMAND) == FD_READ) memcpy(buffer, dma_buffer, size); else memcpy(dma_buffer, buffer, size); remaining -= size; dma_buffer += size; |
1da177e4c Linux-2.6.12-rc2 |
2492 |
} |
1da177e4c Linux-2.6.12-rc2 |
2493 2494 2495 2496 2497 2498 |
if (remaining) { if (remaining > 0) max_sector -= remaining >> 9; DPRINT("weirdness: remaining %d ", remaining >> 9); } |
1da177e4c Linux-2.6.12-rc2 |
2499 |
} |
1da177e4c Linux-2.6.12-rc2 |
2500 2501 2502 2503 2504 2505 2506 2507 2508 |
/* work around a bug in pseudo DMA * (on some FDCs) pseudo DMA does not stop when the CPU stops * sending data. Hence we need a different way to signal the * transfer length: We use SECT_PER_TRACK. Unfortunately, this * does not work with MT, hence we can only transfer one head at * a time */ static void virtualdmabug_workaround(void) { |
06f748c47 floppy: do a very... |
2509 2510 |
int hard_sectors; int end_sector; |
1da177e4c Linux-2.6.12-rc2 |
2511 2512 2513 2514 2515 2516 |
if (CT(COMMAND) == FD_WRITE) { COMMAND &= ~0x80; /* switch off multiple track mode */ hard_sectors = raw_cmd->length >> (7 + SIZECODE); end_sector = SECTOR + hard_sectors - 1; |
1da177e4c Linux-2.6.12-rc2 |
2517 |
if (end_sector > SECT_PER_TRACK) { |
b46df356d drivers/block/flo... |
2518 2519 2520 |
pr_info("too many sectors %d > %d ", end_sector, SECT_PER_TRACK); |
1da177e4c Linux-2.6.12-rc2 |
2521 2522 |
return; } |
48c8cee61 drivers/block/flo... |
2523 2524 2525 |
SECT_PER_TRACK = end_sector; /* make sure SECT_PER_TRACK * points to end of transfer */ |
1da177e4c Linux-2.6.12-rc2 |
2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 |
} } /* * Formulate a read/write request. * this routine decides where to load the data (directly to buffer, or to * tmp floppy area), how much data to load (the size of the buffer, the whole * track, or a single sector) * All floppy_track_buffer handling goes in here. If we ever add track buffer * allocation on the fly, it should be done here. No other part should need * modification. */ static int make_raw_rw_request(void) { int aligned_sector_t; |
06f748c47 floppy: do a very... |
2542 2543 2544 2545 |
int max_sector; int max_size; int tracksize; int ssize; |
1da177e4c Linux-2.6.12-rc2 |
2546 |
|
01b6b67ed floppy: use warni... |
2547 2548 |
if (WARN(max_buffer_sectors == 0, "VFS: Block I/O scheduled on unopened device ")) |
1da177e4c Linux-2.6.12-rc2 |
2549 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
2550 2551 2552 2553 |
set_fdc((long)current_req->rq_disk->private_data); raw_cmd = &default_raw_cmd; |
2fb2ca6f5 floppy: remove du... |
2554 |
raw_cmd->flags = FD_RAW_SPIN | FD_RAW_NEED_DISK | FD_RAW_NEED_SEEK; |
1da177e4c Linux-2.6.12-rc2 |
2555 2556 2557 2558 2559 2560 2561 2562 |
raw_cmd->cmd_count = NR_RW; if (rq_data_dir(current_req) == READ) { raw_cmd->flags |= FD_RAW_READ; COMMAND = FM_MODE(_floppy, FD_READ); } else if (rq_data_dir(current_req) == WRITE) { raw_cmd->flags |= FD_RAW_WRITE; COMMAND = FM_MODE(_floppy, FD_WRITE); } else { |
275176bc2 drivers/block/flo... |
2563 2564 |
DPRINT("%s: unknown command ", __func__); |
1da177e4c Linux-2.6.12-rc2 |
2565 2566 2567 2568 |
return 0; } max_sector = _floppy->sect * _floppy->head; |
83096ebf1 block: convert to... |
2569 2570 |
TRACK = (int)blk_rq_pos(current_req) / max_sector; fsector_t = (int)blk_rq_pos(current_req) % max_sector; |
1da177e4c Linux-2.6.12-rc2 |
2571 |
if (_floppy->track && TRACK >= _floppy->track) { |
83096ebf1 block: convert to... |
2572 |
if (blk_rq_cur_sectors(current_req) & 1) { |
1da177e4c Linux-2.6.12-rc2 |
2573 2574 2575 2576 2577 2578 |
current_count_sectors = 1; return 1; } else return 0; } HEAD = fsector_t / _floppy->sect; |
9e49184c8 floppy: support a... |
2579 |
if (((_floppy->stretch & (FD_SWAPSIDES | FD_SECTBASEMASK)) || |
e02985361 drivers/block/flo... |
2580 2581 |
test_bit(FD_NEED_TWADDLE_BIT, &DRS->flags)) && fsector_t < _floppy->sect) |
1da177e4c Linux-2.6.12-rc2 |
2582 2583 2584 2585 2586 2587 2588 2589 |
max_sector = _floppy->sect; /* 2M disks have phantom sectors on the first track */ if ((_floppy->rate & FD_2M) && (!TRACK) && (!HEAD)) { max_sector = 2 * _floppy->sect / 3; if (fsector_t >= max_sector) { current_count_sectors = min_t(int, _floppy->sect - fsector_t, |
83096ebf1 block: convert to... |
2590 |
blk_rq_sectors(current_req)); |
1da177e4c Linux-2.6.12-rc2 |
2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 |
return 1; } SIZECODE = 2; } else SIZECODE = FD_SIZECODE(_floppy); raw_cmd->rate = _floppy->rate & 0x43; if ((_floppy->rate & FD_2M) && (TRACK || HEAD) && raw_cmd->rate == 2) raw_cmd->rate = 1; if (SIZECODE) SIZECODE2 = 0xff; else SIZECODE2 = 0x80; raw_cmd->track = TRACK << STRETCH(_floppy); DR_SELECT = UNIT(current_drive) + PH_HEAD(_floppy, HEAD); GAP = _floppy->gap; |
712e1de43 drivers/block/flo... |
2607 |
ssize = DIV_ROUND_UP(1 << SIZECODE, 4); |
1da177e4c Linux-2.6.12-rc2 |
2608 2609 |
SECT_PER_TRACK = _floppy->sect << 2 >> SIZECODE; SECTOR = ((fsector_t % _floppy->sect) << 2 >> SIZECODE) + |
9e49184c8 floppy: support a... |
2610 |
FD_SECTBASE(_floppy); |
1da177e4c Linux-2.6.12-rc2 |
2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 |
/* tracksize describes the size which can be filled up with sectors * of size ssize. */ tracksize = _floppy->sect - _floppy->sect % ssize; if (tracksize < _floppy->sect) { SECT_PER_TRACK++; if (tracksize <= fsector_t % _floppy->sect) SECTOR--; /* if we are beyond tracksize, fill up using smaller sectors */ while (tracksize <= fsector_t % _floppy->sect) { while (tracksize + ssize > _floppy->sect) { SIZECODE--; ssize >>= 1; } SECTOR++; SECT_PER_TRACK++; tracksize += ssize; } max_sector = HEAD * _floppy->sect + tracksize; } else if (!TRACK && !HEAD && !(_floppy->rate & FD_2M) && probing) { max_sector = _floppy->sect; } else if (!HEAD && CT(COMMAND) == FD_WRITE) { /* for virtual DMA bug workaround */ max_sector = _floppy->sect; } in_sector_offset = (fsector_t % _floppy->sect) % ssize; aligned_sector_t = fsector_t - in_sector_offset; |
83096ebf1 block: convert to... |
2641 |
max_size = blk_rq_sectors(current_req); |
1da177e4c Linux-2.6.12-rc2 |
2642 2643 2644 2645 2646 2647 2648 2649 |
if ((raw_cmd->track == buffer_track) && (current_drive == buffer_drive) && (fsector_t >= buffer_min) && (fsector_t < buffer_max)) { /* data already in track buffer */ if (CT(COMMAND) == FD_READ) { copy_buffer(1, max_sector, buffer_max); return 1; } |
83096ebf1 block: convert to... |
2650 |
} else if (in_sector_offset || blk_rq_sectors(current_req) < ssize) { |
1da177e4c Linux-2.6.12-rc2 |
2651 |
if (CT(COMMAND) == FD_WRITE) { |
d7b2b2ecd drivers/block/flo... |
2652 2653 2654 2655 |
unsigned int sectors; sectors = fsector_t + blk_rq_sectors(current_req); if (sectors > ssize && sectors < ssize + ssize) |
1da177e4c Linux-2.6.12-rc2 |
2656 2657 2658 2659 2660 2661 2662 |
max_size = ssize + ssize; else max_size = ssize; } raw_cmd->flags &= ~FD_RAW_WRITE; raw_cmd->flags |= FD_RAW_READ; COMMAND = FM_MODE(_floppy, FD_READ); |
b4f42e283 block: remove str... |
2663 |
} else if ((unsigned long)bio_data(current_req->bio) < MAX_DMA_ADDRESS) { |
1da177e4c Linux-2.6.12-rc2 |
2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 |
unsigned long dma_limit; int direct, indirect; indirect = transfer_size(ssize, max_sector, max_buffer_sectors * 2) - fsector_t; /* * Do NOT use minimum() here---MAX_DMA_ADDRESS is 64 bits wide * on a 64 bit machine! */ max_size = buffer_chain_size(); |
d7b2b2ecd drivers/block/flo... |
2676 |
dma_limit = (MAX_DMA_ADDRESS - |
b4f42e283 block: remove str... |
2677 |
((unsigned long)bio_data(current_req->bio))) >> 9; |
a81ee5447 drivers/block/flo... |
2678 |
if ((unsigned long)max_size > dma_limit) |
1da177e4c Linux-2.6.12-rc2 |
2679 |
max_size = dma_limit; |
1da177e4c Linux-2.6.12-rc2 |
2680 |
/* 64 kb boundaries */ |
b4f42e283 block: remove str... |
2681 |
if (CROSS_64KB(bio_data(current_req->bio), max_size << 9)) |
1da177e4c Linux-2.6.12-rc2 |
2682 |
max_size = (K_64 - |
b4f42e283 block: remove str... |
2683 |
((unsigned long)bio_data(current_req->bio)) % |
1da177e4c Linux-2.6.12-rc2 |
2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 |
K_64) >> 9; direct = transfer_size(ssize, max_sector, max_size) - fsector_t; /* * We try to read tracks, but if we get too many errors, we * go back to reading just one sector at a time. * * This means we should be able to read a sector even if there * are other bad sectors on this track. */ if (!direct || (indirect * 2 > direct * 3 && |
d7b2b2ecd drivers/block/flo... |
2695 2696 2697 |
*errors < DP->max_errors.read_track && ((!probing || (DP->read_track & (1 << DRS->probed_format)))))) { |
83096ebf1 block: convert to... |
2698 |
max_size = blk_rq_sectors(current_req); |
1da177e4c Linux-2.6.12-rc2 |
2699 |
} else { |
b4f42e283 block: remove str... |
2700 |
raw_cmd->kernel_data = bio_data(current_req->bio); |
1da177e4c Linux-2.6.12-rc2 |
2701 2702 |
raw_cmd->length = current_count_sectors << 9; if (raw_cmd->length == 0) { |
275176bc2 drivers/block/flo... |
2703 2704 |
DPRINT("%s: zero dma transfer attempted ", __func__); |
d7b2b2ecd drivers/block/flo... |
2705 2706 |
DPRINT("indirect=%d direct=%d fsector_t=%d ", |
1da177e4c Linux-2.6.12-rc2 |
2707 2708 2709 |
indirect, direct, fsector_t); return 0; } |
1da177e4c Linux-2.6.12-rc2 |
2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 |
virtualdmabug_workaround(); return 2; } } if (CT(COMMAND) == FD_READ) max_size = max_sector; /* unbounded */ /* claim buffer track if needed */ if (buffer_track != raw_cmd->track || /* bad track */ buffer_drive != current_drive || /* bad drive */ fsector_t > buffer_max || fsector_t < buffer_min || ((CT(COMMAND) == FD_READ || |
83096ebf1 block: convert to... |
2724 |
(!in_sector_offset && blk_rq_sectors(current_req) >= ssize)) && |
1da177e4c Linux-2.6.12-rc2 |
2725 |
max_sector > 2 * max_buffer_sectors + buffer_min && |
bb57f0c66 drivers/block/flo... |
2726 2727 |
max_size + fsector_t > 2 * max_buffer_sectors + buffer_min)) { /* not enough space */ |
1da177e4c Linux-2.6.12-rc2 |
2728 2729 2730 2731 2732 |
buffer_track = -1; buffer_drive = current_drive; buffer_max = buffer_min = aligned_sector_t; } raw_cmd->kernel_data = floppy_track_buffer + |
bb57f0c66 drivers/block/flo... |
2733 |
((aligned_sector_t - buffer_min) << 9); |
1da177e4c Linux-2.6.12-rc2 |
2734 2735 2736 2737 2738 2739 |
if (CT(COMMAND) == FD_WRITE) { /* copy write buffer to track buffer. * if we get here, we know that the write * is either aligned or the data already in the buffer * (buffer will be overwritten) */ |
1da177e4c Linux-2.6.12-rc2 |
2740 2741 2742 |
if (in_sector_offset && buffer_track == -1) DPRINT("internal error offset !=0 on write "); |
1da177e4c Linux-2.6.12-rc2 |
2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 |
buffer_track = raw_cmd->track; buffer_drive = current_drive; copy_buffer(ssize, max_sector, 2 * max_buffer_sectors + buffer_min); } else transfer_size(ssize, max_sector, 2 * max_buffer_sectors + buffer_min - aligned_sector_t); /* round up current_count_sectors to get dma xfer size */ raw_cmd->length = in_sector_offset + current_count_sectors; raw_cmd->length = ((raw_cmd->length - 1) | (ssize - 1)) + 1; raw_cmd->length <<= 9; |
1da177e4c Linux-2.6.12-rc2 |
2756 |
if ((raw_cmd->length < current_count_sectors << 9) || |
b4f42e283 block: remove str... |
2757 |
(raw_cmd->kernel_data != bio_data(current_req->bio) && |
1da177e4c Linux-2.6.12-rc2 |
2758 2759 2760 2761 2762 2763 2764 2765 |
CT(COMMAND) == FD_WRITE && (aligned_sector_t + (raw_cmd->length >> 9) > buffer_max || aligned_sector_t < buffer_min)) || raw_cmd->length % (128 << SIZECODE) || raw_cmd->length <= 0 || current_count_sectors <= 0) { DPRINT("fractionary current count b=%lx s=%lx ", raw_cmd->length, current_count_sectors); |
b4f42e283 block: remove str... |
2766 |
if (raw_cmd->kernel_data != bio_data(current_req->bio)) |
b46df356d drivers/block/flo... |
2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 |
pr_info("addr=%d, length=%ld ", (int)((raw_cmd->kernel_data - floppy_track_buffer) >> 9), current_count_sectors); pr_info("st=%d ast=%d mse=%d msi=%d ", fsector_t, aligned_sector_t, max_sector, max_size); pr_info("ssize=%x SIZECODE=%d ", ssize, SIZECODE); pr_info("command=%x SECTOR=%d HEAD=%d, TRACK=%d ", COMMAND, SECTOR, HEAD, TRACK); pr_info("buffer drive=%d ", buffer_drive); pr_info("buffer track=%d ", buffer_track); pr_info("buffer_min=%d ", buffer_min); pr_info("buffer_max=%d ", buffer_max); |
1da177e4c Linux-2.6.12-rc2 |
2788 2789 |
return 0; } |
b4f42e283 block: remove str... |
2790 |
if (raw_cmd->kernel_data != bio_data(current_req->bio)) { |
1da177e4c Linux-2.6.12-rc2 |
2791 2792 2793 2794 2795 2796 2797 |
if (raw_cmd->kernel_data < floppy_track_buffer || current_count_sectors < 0 || raw_cmd->length < 0 || raw_cmd->kernel_data + raw_cmd->length > floppy_track_buffer + (max_buffer_sectors << 10)) { DPRINT("buffer overrun in schedule dma "); |
b46df356d drivers/block/flo... |
2798 2799 2800 2801 2802 2803 |
pr_info("fsector_t=%d buffer_min=%d current_count=%ld ", fsector_t, buffer_min, raw_cmd->length >> 9); pr_info("current_count_sectors=%ld ", current_count_sectors); |
1da177e4c Linux-2.6.12-rc2 |
2804 |
if (CT(COMMAND) == FD_READ) |
b46df356d drivers/block/flo... |
2805 2806 |
pr_info("read "); |
1da177e4c Linux-2.6.12-rc2 |
2807 |
if (CT(COMMAND) == FD_WRITE) |
b46df356d drivers/block/flo... |
2808 2809 |
pr_info("write "); |
1da177e4c Linux-2.6.12-rc2 |
2810 2811 |
return 0; } |
1011c1b9f block: blk_rq_[cu... |
2812 |
} else if (raw_cmd->length > blk_rq_bytes(current_req) || |
83096ebf1 block: convert to... |
2813 |
current_count_sectors > blk_rq_sectors(current_req)) { |
1da177e4c Linux-2.6.12-rc2 |
2814 2815 2816 2817 2818 2819 |
DPRINT("buffer overrun in direct transfer "); return 0; } else if (raw_cmd->length < current_count_sectors << 9) { DPRINT("more sectors than bytes "); |
b46df356d drivers/block/flo... |
2820 2821 2822 2823 |
pr_info("bytes=%ld ", raw_cmd->length >> 9); pr_info("sectors=%ld ", current_count_sectors); |
1da177e4c Linux-2.6.12-rc2 |
2824 2825 2826 2827 2828 2829 |
} if (raw_cmd->length == 0) { DPRINT("zero dma transfer attempted from make_raw_request "); return 0; } |
1da177e4c Linux-2.6.12-rc2 |
2830 2831 2832 2833 |
virtualdmabug_workaround(); return 2; } |
488211844 floppy: switch to... |
2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 |
/* * Round-robin between our available drives, doing one request from each */ static int set_next_request(void) { struct request_queue *q; int old_pos = fdc_queue; do { q = disks[fdc_queue]->queue; if (++fdc_queue == N_DRIVE) fdc_queue = 0; if (q) { current_req = blk_fetch_request(q); |
459087959 floppy: switch fr... |
2848 2849 |
if (current_req) { current_req->error_count = 0; |
488211844 floppy: switch to... |
2850 |
break; |
459087959 floppy: switch fr... |
2851 |
} |
488211844 floppy: switch to... |
2852 2853 2854 2855 2856 |
} } while (fdc_queue != old_pos); return current_req != NULL; } |
1da177e4c Linux-2.6.12-rc2 |
2857 2858 |
static void redo_fd_request(void) { |
1da177e4c Linux-2.6.12-rc2 |
2859 2860 2861 2862 2863 2864 |
int drive; int tmp; lastredo = jiffies; if (current_drive < N_DRIVE) floppy_off(current_drive); |
0da3132f9 drivers/block/flo... |
2865 2866 |
do_request: if (!current_req) { |
488211844 floppy: switch to... |
2867 2868 2869 2870 2871 |
int pending; spin_lock_irq(&floppy_lock); pending = set_next_request(); spin_unlock_irq(&floppy_lock); |
488211844 floppy: switch to... |
2872 |
if (!pending) { |
0da3132f9 drivers/block/flo... |
2873 2874 |
do_floppy = NULL; unlock_fdc(); |
1da177e4c Linux-2.6.12-rc2 |
2875 |
return; |
1da177e4c Linux-2.6.12-rc2 |
2876 |
} |
0da3132f9 drivers/block/flo... |
2877 2878 2879 |
} drive = (long)current_req->rq_disk->private_data; set_fdc(drive); |
73507e6cd drivers/block/flo... |
2880 |
reschedule_timeout(current_reqD, "redo fd request"); |
1da177e4c Linux-2.6.12-rc2 |
2881 |
|
0da3132f9 drivers/block/flo... |
2882 2883 2884 2885 |
set_floppy(drive); raw_cmd = &default_raw_cmd; raw_cmd->flags = 0; if (start_motor(redo_fd_request)) |
1da177e4c Linux-2.6.12-rc2 |
2886 |
return; |
0da3132f9 drivers/block/flo... |
2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 |
disk_change(current_drive); if (test_bit(current_drive, &fake_change) || test_bit(FD_DISK_CHANGED_BIT, &DRS->flags)) { DPRINT("disk absent or changed during operation "); request_done(0); goto do_request; } if (!_floppy) { /* Autodetection */ if (!probing) { DRS->probed_format = 0; if (next_valid_format()) { DPRINT("no autodetectable formats "); _floppy = NULL; request_done(0); goto do_request; } } probing = 1; _floppy = floppy_type + DP->autodetect[DRS->probed_format]; } else probing = 0; |
459087959 floppy: switch fr... |
2911 |
errors = &(current_req->error_count); |
0da3132f9 drivers/block/flo... |
2912 2913 2914 2915 |
tmp = make_raw_rw_request(); if (tmp < 2) { request_done(tmp); goto do_request; |
1da177e4c Linux-2.6.12-rc2 |
2916 |
} |
0da3132f9 drivers/block/flo... |
2917 2918 2919 2920 |
if (test_bit(FD_NEED_TWADDLE_BIT, &DRS->flags)) twaddle(); schedule_bh(floppy_start); |
ded2863d0 drivers/block/flo... |
2921 |
debugt(__func__, "queue fd request"); |
0da3132f9 drivers/block/flo... |
2922 |
return; |
1da177e4c Linux-2.6.12-rc2 |
2923 |
} |
3b06c21e8 floppy: make cont... |
2924 |
static const struct cont_t rw_cont = { |
1da177e4c Linux-2.6.12-rc2 |
2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 |
.interrupt = rw_interrupt, .redo = redo_fd_request, .error = bad_flp_intr, .done = request_done }; static void process_fd_request(void) { cont = &rw_cont; schedule_bh(redo_fd_request); } |
d7b2b2ecd drivers/block/flo... |
2936 |
static void do_fd_request(struct request_queue *q) |
1da177e4c Linux-2.6.12-rc2 |
2937 |
{ |
01b6b67ed floppy: use warni... |
2938 2939 2940 |
if (WARN(max_buffer_sectors == 0, "VFS: %s called on non-open device ", __func__)) |
1da177e4c Linux-2.6.12-rc2 |
2941 |
return; |
1da177e4c Linux-2.6.12-rc2 |
2942 |
|
01b6b67ed floppy: use warni... |
2943 |
if (WARN(atomic_read(&usage_count) == 0, |
aebf526b5 block: fold cmd_t... |
2944 2945 2946 |
"warning: usage count=0, current_req=%p sect=%ld flags=%llx ", current_req, (long)blk_rq_pos(current_req), |
5953316db block: make rq->c... |
2947 |
(unsigned long long) current_req->cmd_flags)) |
1da177e4c Linux-2.6.12-rc2 |
2948 |
return; |
01b6b67ed floppy: use warni... |
2949 |
|
070ad7e79 floppy: convert t... |
2950 |
if (test_and_set_bit(0, &fdc_busy)) { |
1da177e4c Linux-2.6.12-rc2 |
2951 2952 |
/* fdc busy, this new request will be treated when the current one is done */ |
275176bc2 drivers/block/flo... |
2953 |
is_alive(__func__, "old request running"); |
1da177e4c Linux-2.6.12-rc2 |
2954 2955 |
return; } |
070ad7e79 floppy: convert t... |
2956 2957 2958 |
command_status = FD_COMMAND_NONE; __reschedule_timeout(MAXTIMEOUT, "fd_request"); set_fdc(0); |
1da177e4c Linux-2.6.12-rc2 |
2959 |
process_fd_request(); |
275176bc2 drivers/block/flo... |
2960 |
is_alive(__func__, ""); |
1da177e4c Linux-2.6.12-rc2 |
2961 |
} |
3b06c21e8 floppy: make cont... |
2962 |
static const struct cont_t poll_cont = { |
1da177e4c Linux-2.6.12-rc2 |
2963 2964 2965 2966 2967 |
.interrupt = success_and_wakeup, .redo = floppy_ready, .error = generic_failure, .done = generic_done }; |
74f63f469 drivers/block/flo... |
2968 |
static int poll_drive(bool interruptible, int flag) |
1da177e4c Linux-2.6.12-rc2 |
2969 |
{ |
1da177e4c Linux-2.6.12-rc2 |
2970 2971 2972 2973 2974 2975 |
/* no auto-sense, just clear dcl */ raw_cmd = &default_raw_cmd; raw_cmd->flags = flag; raw_cmd->track = 0; raw_cmd->cmd_count = 0; cont = &poll_cont; |
87f530d8f drivers/block/flo... |
2976 2977 |
debug_dcl(DP->flags, "setting NEWCHANGE in poll_drive "); |
e02985361 drivers/block/flo... |
2978 |
set_bit(FD_DISK_NEWCHANGE_BIT, &DRS->flags); |
55eee80c6 drivers/block/flo... |
2979 2980 |
return wait_til_done(floppy_ready, interruptible); |
1da177e4c Linux-2.6.12-rc2 |
2981 2982 2983 2984 2985 2986 2987 2988 2989 |
} /* * User triggered reset * ==================== */ static void reset_intr(void) { |
b46df356d drivers/block/flo... |
2990 2991 |
pr_info("weird, reset interrupt called "); |
1da177e4c Linux-2.6.12-rc2 |
2992 |
} |
3b06c21e8 floppy: make cont... |
2993 |
static const struct cont_t reset_cont = { |
1da177e4c Linux-2.6.12-rc2 |
2994 2995 2996 2997 2998 |
.interrupt = reset_intr, .redo = success_and_wakeup, .error = generic_failure, .done = generic_done }; |
74f63f469 drivers/block/flo... |
2999 |
static int user_reset_fdc(int drive, int arg, bool interruptible) |
1da177e4c Linux-2.6.12-rc2 |
3000 3001 |
{ int ret; |
a0c80efe5 floppy: fix lock_... |
3002 |
if (lock_fdc(drive)) |
52a0d61f6 drivers/block/flo... |
3003 |
return -EINTR; |
1da177e4c Linux-2.6.12-rc2 |
3004 3005 3006 3007 |
if (arg == FD_RESET_ALWAYS) FDCS->reset = 1; if (FDCS->reset) { cont = &reset_cont; |
55eee80c6 drivers/block/flo... |
3008 3009 3010 |
ret = wait_til_done(reset_fdc, interruptible); if (ret == -EINTR) return -EINTR; |
1da177e4c Linux-2.6.12-rc2 |
3011 3012 |
} process_fd_request(); |
52a0d61f6 drivers/block/flo... |
3013 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 |
} /* * Misc Ioctl's and support * ======================== */ static inline int fd_copyout(void __user *param, const void *address, unsigned long size) { return copy_to_user(param, address, size) ? -EFAULT : 0; } |
48c8cee61 drivers/block/flo... |
3025 3026 |
static inline int fd_copyin(void __user *param, void *address, unsigned long size) |
1da177e4c Linux-2.6.12-rc2 |
3027 3028 3029 |
{ return copy_from_user(address, param, size) ? -EFAULT : 0; } |
be7a12bb1 floppy: remove un... |
3030 |
static const char *drive_name(int type, int drive) |
1da177e4c Linux-2.6.12-rc2 |
3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 |
{ struct floppy_struct *floppy; if (type) floppy = floppy_type + type; else { if (UDP->native_format) floppy = floppy_type + UDP->native_format; else return "(null)"; } if (floppy->name) return floppy->name; else return "(null)"; } /* raw commands */ static void raw_cmd_done(int flag) { int i; if (!flag) { raw_cmd->flags |= FD_RAW_FAILURE; raw_cmd->flags |= FD_RAW_HARDFAILURE; } else { raw_cmd->reply_count = inr; if (raw_cmd->reply_count > MAX_REPLIES) raw_cmd->reply_count = 0; for (i = 0; i < raw_cmd->reply_count; i++) raw_cmd->reply[i] = reply_buffer[i]; if (raw_cmd->flags & (FD_RAW_READ | FD_RAW_WRITE)) { unsigned long flags; flags = claim_dma_lock(); raw_cmd->length = fd_get_dma_residue(); release_dma_lock(flags); } if ((raw_cmd->flags & FD_RAW_SOFTFAILURE) && (!raw_cmd->reply_count || (raw_cmd->reply[0] & 0xc0))) raw_cmd->flags |= FD_RAW_FAILURE; if (disk_change(current_drive)) raw_cmd->flags |= FD_RAW_DISK_CHANGE; else raw_cmd->flags &= ~FD_RAW_DISK_CHANGE; if (raw_cmd->flags & FD_RAW_NO_MOTOR_AFTER) motor_off_callback(current_drive); if (raw_cmd->next && (!(raw_cmd->flags & FD_RAW_FAILURE) || !(raw_cmd->flags & FD_RAW_STOP_IF_FAILURE)) && ((raw_cmd->flags & FD_RAW_FAILURE) || !(raw_cmd->flags & FD_RAW_STOP_IF_SUCCESS))) { raw_cmd = raw_cmd->next; return; } } generic_done(flag); } |
3b06c21e8 floppy: make cont... |
3092 |
static const struct cont_t raw_cmd_cont = { |
1da177e4c Linux-2.6.12-rc2 |
3093 3094 3095 3096 3097 |
.interrupt = success_and_wakeup, .redo = floppy_start, .error = generic_failure, .done = raw_cmd_done }; |
be7a12bb1 floppy: remove un... |
3098 |
static int raw_cmd_copyout(int cmd, void __user *param, |
1da177e4c Linux-2.6.12-rc2 |
3099 3100 3101 3102 3103 |
struct floppy_raw_cmd *ptr) { int ret; while (ptr) { |
2145e15e0 floppy: don't wri... |
3104 3105 3106 3107 |
struct floppy_raw_cmd cmd = *ptr; cmd.next = NULL; cmd.kernel_data = NULL; ret = copy_to_user(param, &cmd, sizeof(cmd)); |
86b12b48a drivers/block/flo... |
3108 3109 |
if (ret) return -EFAULT; |
1da177e4c Linux-2.6.12-rc2 |
3110 3111 |
param += sizeof(struct floppy_raw_cmd); if ((ptr->flags & FD_RAW_READ) && ptr->buffer_length) { |
bb57f0c66 drivers/block/flo... |
3112 3113 3114 |
if (ptr->length >= 0 && ptr->length <= ptr->buffer_length) { long length = ptr->buffer_length - ptr->length; |
4575b5528 drivers/block/flo... |
3115 3116 3117 3118 |
ret = fd_copyout(ptr->data, ptr->kernel_data, length); if (ret) return ret; |
bb57f0c66 drivers/block/flo... |
3119 |
} |
1da177e4c Linux-2.6.12-rc2 |
3120 3121 3122 |
} ptr = ptr->next; } |
7f2527174 drivers/block/flo... |
3123 |
|
1da177e4c Linux-2.6.12-rc2 |
3124 3125 3126 3127 3128 |
return 0; } static void raw_cmd_free(struct floppy_raw_cmd **ptr) { |
06f748c47 floppy: do a very... |
3129 3130 |
struct floppy_raw_cmd *next; struct floppy_raw_cmd *this; |
1da177e4c Linux-2.6.12-rc2 |
3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 |
this = *ptr; *ptr = NULL; while (this) { if (this->buffer_length) { fd_dma_mem_free((unsigned long)this->kernel_data, this->buffer_length); this->buffer_length = 0; } next = this->next; kfree(this); this = next; } } |
be7a12bb1 floppy: remove un... |
3145 |
static int raw_cmd_copyin(int cmd, void __user *param, |
1da177e4c Linux-2.6.12-rc2 |
3146 3147 3148 3149 3150 3151 3152 |
struct floppy_raw_cmd **rcmd) { struct floppy_raw_cmd *ptr; int ret; int i; *rcmd = NULL; |
7f2527174 drivers/block/flo... |
3153 3154 |
loop: |
1661f2e21 floppy: replace w... |
3155 |
ptr = kmalloc(sizeof(struct floppy_raw_cmd), GFP_KERNEL); |
7f2527174 drivers/block/flo... |
3156 3157 3158 3159 |
if (!ptr) return -ENOMEM; *rcmd = ptr; ret = copy_from_user(ptr, param, sizeof(*ptr)); |
7f2527174 drivers/block/flo... |
3160 3161 |
ptr->next = NULL; ptr->buffer_length = 0; |
ef87dbe76 floppy: ignore ke... |
3162 3163 3164 |
ptr->kernel_data = NULL; if (ret) return -EFAULT; |
7f2527174 drivers/block/flo... |
3165 3166 |
param += sizeof(struct floppy_raw_cmd); if (ptr->cmd_count > 33) |
1da177e4c Linux-2.6.12-rc2 |
3167 3168 3169 3170 3171 3172 3173 3174 |
/* the command may now also take up the space * initially intended for the reply & the * reply count. Needed for long 82078 commands * such as RESTORE, which takes ... 17 command * bytes. Murphy's law #137: When you reserve * 16 bytes for a structure, you'll one day * discover that you really need 17... */ |
7f2527174 drivers/block/flo... |
3175 3176 3177 3178 3179 |
return -EINVAL; for (i = 0; i < 16; i++) ptr->reply[i] = 0; ptr->resultcode = 0; |
7f2527174 drivers/block/flo... |
3180 3181 3182 |
if (ptr->flags & (FD_RAW_READ | FD_RAW_WRITE)) { if (ptr->length <= 0) |
1da177e4c Linux-2.6.12-rc2 |
3183 |
return -EINVAL; |
7f2527174 drivers/block/flo... |
3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 |
ptr->kernel_data = (char *)fd_dma_mem_alloc(ptr->length); fallback_on_nodma_alloc(&ptr->kernel_data, ptr->length); if (!ptr->kernel_data) return -ENOMEM; ptr->buffer_length = ptr->length; } if (ptr->flags & FD_RAW_WRITE) { ret = fd_copyin(ptr->data, ptr->kernel_data, ptr->length); if (ret) return ret; } |
1da177e4c Linux-2.6.12-rc2 |
3195 |
|
7f2527174 drivers/block/flo... |
3196 |
if (ptr->flags & FD_RAW_MORE) { |
1da177e4c Linux-2.6.12-rc2 |
3197 |
rcmd = &(ptr->next); |
1da177e4c Linux-2.6.12-rc2 |
3198 |
ptr->rate &= 0x43; |
7f2527174 drivers/block/flo... |
3199 |
goto loop; |
1da177e4c Linux-2.6.12-rc2 |
3200 |
} |
7f2527174 drivers/block/flo... |
3201 3202 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
3203 3204 3205 3206 |
} static int raw_cmd_ioctl(int cmd, void __user *param) { |
1da177e4c Linux-2.6.12-rc2 |
3207 |
struct floppy_raw_cmd *my_raw_cmd; |
06f748c47 floppy: do a very... |
3208 3209 3210 |
int drive; int ret2; int ret; |
1da177e4c Linux-2.6.12-rc2 |
3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 |
if (FDCS->rawcmd <= 1) FDCS->rawcmd = 1; for (drive = 0; drive < N_DRIVE; drive++) { if (FDC(drive) != fdc) continue; if (drive == current_drive) { if (UDRS->fd_ref > 1) { FDCS->rawcmd = 2; break; } } else if (UDRS->fd_ref) { FDCS->rawcmd = 2; break; } } if (FDCS->reset) return -EIO; ret = raw_cmd_copyin(cmd, param, &my_raw_cmd); if (ret) { raw_cmd_free(&my_raw_cmd); return ret; } raw_cmd = my_raw_cmd; cont = &raw_cmd_cont; |
74f63f469 drivers/block/flo... |
3239 |
ret = wait_til_done(floppy_start, true); |
87f530d8f drivers/block/flo... |
3240 3241 |
debug_dcl(DP->flags, "calling disk change from raw_cmd ioctl "); |
1da177e4c Linux-2.6.12-rc2 |
3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 |
if (ret != -EINTR && FDCS->reset) ret = -EIO; DRS->track = NO_TRACK; ret2 = raw_cmd_copyout(cmd, param, my_raw_cmd); if (!ret) ret = ret2; raw_cmd_free(&my_raw_cmd); return ret; } static int invalidate_drive(struct block_device *bdev) { /* invalidate the buffer track to force a reread */ set_bit((long)bdev->bd_disk->private_data, &fake_change); process_fd_request(); check_disk_change(bdev); return 0; } |
be7a12bb1 floppy: remove un... |
3263 |
static int set_geometry(unsigned int cmd, struct floppy_struct *g, |
1da177e4c Linux-2.6.12-rc2 |
3264 3265 3266 3267 3268 3269 3270 3271 3272 |
int drive, int type, struct block_device *bdev) { int cnt; /* sanity checking for parameters. */ if (g->sect <= 0 || g->head <= 0 || g->track <= 0 || g->track > UDP->tracks >> STRETCH(g) || /* check if reserved bits are set */ |
9e49184c8 floppy: support a... |
3273 |
(g->stretch & ~(FD_STRETCH | FD_SWAPSIDES | FD_SECTBASEMASK)) != 0) |
1da177e4c Linux-2.6.12-rc2 |
3274 3275 3276 3277 |
return -EINVAL; if (type) { if (!capable(CAP_SYS_ADMIN)) return -EPERM; |
b1c82b5c5 [PATCH] sem2mutex... |
3278 |
mutex_lock(&open_lock); |
a0c80efe5 floppy: fix lock_... |
3279 |
if (lock_fdc(drive)) { |
8516a5000 floppy: fix lock ... |
3280 3281 3282 |
mutex_unlock(&open_lock); return -EINTR; } |
1da177e4c Linux-2.6.12-rc2 |
3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 |
floppy_type[type] = *g; floppy_type[type].name = "user format"; for (cnt = type << 2; cnt < (type << 2) + 4; cnt++) floppy_sizes[cnt] = floppy_sizes[cnt + 0x80] = floppy_type[type].size + 1; process_fd_request(); for (cnt = 0; cnt < N_DRIVE; cnt++) { struct block_device *bdev = opened_bdev[cnt]; if (!bdev || ITYPE(drive_state[cnt].fd_device) != type) continue; |
93b270f76 Fix over-zealous ... |
3293 |
__invalidate_device(bdev, true); |
1da177e4c Linux-2.6.12-rc2 |
3294 |
} |
b1c82b5c5 [PATCH] sem2mutex... |
3295 |
mutex_unlock(&open_lock); |
1da177e4c Linux-2.6.12-rc2 |
3296 3297 |
} else { int oldStretch; |
52a0d61f6 drivers/block/flo... |
3298 |
|
a0c80efe5 floppy: fix lock_... |
3299 |
if (lock_fdc(drive)) |
52a0d61f6 drivers/block/flo... |
3300 |
return -EINTR; |
4575b5528 drivers/block/flo... |
3301 |
if (cmd != FDDEFPRM) { |
1da177e4c Linux-2.6.12-rc2 |
3302 3303 |
/* notice a disk change immediately, else * we lose our settings immediately*/ |
74f63f469 drivers/block/flo... |
3304 |
if (poll_drive(true, FD_RAW_NEED_DISK) == -EINTR) |
4575b5528 drivers/block/flo... |
3305 3306 |
return -EINTR; } |
1da177e4c Linux-2.6.12-rc2 |
3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 |
oldStretch = g->stretch; user_params[drive] = *g; if (buffer_drive == drive) SUPBOUND(buffer_max, user_params[drive].sect); current_type[drive] = &user_params[drive]; floppy_sizes[drive] = user_params[drive].size; if (cmd == FDDEFPRM) DRS->keep_data = -1; else DRS->keep_data = 1; /* invalidation. Invalidate only when needed, i.e. * when there are already sectors in the buffer cache * whose number will change. This is useful, because * mtools often changes the geometry of the disk after * looking at the boot block */ if (DRS->maxblock > user_params[drive].sect || DRS->maxtrack || ((user_params[drive].sect ^ oldStretch) & |
9e49184c8 floppy: support a... |
3325 |
(FD_SWAPSIDES | FD_SECTBASEMASK))) |
1da177e4c Linux-2.6.12-rc2 |
3326 3327 3328 3329 3330 3331 3332 3333 |
invalidate_drive(bdev); else process_fd_request(); } return 0; } /* handle obsolete ioctl's */ |
21af54480 floppy: fix signe... |
3334 |
static unsigned int ioctl_table[] = { |
1da177e4c Linux-2.6.12-rc2 |
3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 |
FDCLRPRM, FDSETPRM, FDDEFPRM, FDGETPRM, FDMSGON, FDMSGOFF, FDFMTBEG, FDFMTTRK, FDFMTEND, FDSETEMSGTRESH, FDFLUSH, FDSETMAXERRS, FDGETMAXERRS, FDGETDRVTYP, FDSETDRVPRM, FDGETDRVPRM, FDGETDRVSTAT, FDPOLLDRVSTAT, FDRESET, FDGETFDCSTAT, FDWERRORCLR, FDWERRORGET, FDRAWCMD, FDEJECT, FDTWADDLE }; |
21af54480 floppy: fix signe... |
3361 |
static int normalize_ioctl(unsigned int *cmd, int *size) |
1da177e4c Linux-2.6.12-rc2 |
3362 3363 3364 3365 3366 3367 3368 3369 |
{ int i; for (i = 0; i < ARRAY_SIZE(ioctl_table); i++) { if ((*cmd & 0xffff) == (ioctl_table[i] & 0xffff)) { *size = _IOC_SIZE(*cmd); *cmd = ioctl_table[i]; if (*size > _IOC_SIZE(*cmd)) { |
b46df356d drivers/block/flo... |
3370 3371 |
pr_info("ioctl not yet supported "); |
1da177e4c Linux-2.6.12-rc2 |
3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 |
return -EFAULT; } return 0; } } return -EINVAL; } static int get_floppy_geometry(int drive, int type, struct floppy_struct **g) { if (type) *g = &floppy_type[type]; else { |
a0c80efe5 floppy: fix lock_... |
3385 |
if (lock_fdc(drive)) |
52a0d61f6 drivers/block/flo... |
3386 |
return -EINTR; |
74f63f469 drivers/block/flo... |
3387 |
if (poll_drive(false, 0) == -EINTR) |
4575b5528 drivers/block/flo... |
3388 |
return -EINTR; |
1da177e4c Linux-2.6.12-rc2 |
3389 3390 3391 3392 3393 3394 3395 |
process_fd_request(); *g = current_type[drive]; } if (!*g) return -ENODEV; return 0; } |
a885c8c43 [PATCH] Add block... |
3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 |
static int fd_getgeo(struct block_device *bdev, struct hd_geometry *geo) { int drive = (long)bdev->bd_disk->private_data; int type = ITYPE(drive_state[drive].fd_device); struct floppy_struct *g; int ret; ret = get_floppy_geometry(drive, type, &g); if (ret) return ret; geo->heads = g->head; geo->sectors = g->sect; geo->cylinders = g->track; return 0; } |
8a6cfeb6d block: push down ... |
3412 |
static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, |
1da177e4c Linux-2.6.12-rc2 |
3413 3414 |
unsigned long param) { |
a4af9b48c [PATCH] switch fl... |
3415 |
int drive = (long)bdev->bd_disk->private_data; |
06f748c47 floppy: do a very... |
3416 3417 |
int type = ITYPE(UDRS->fd_device); int i; |
1da177e4c Linux-2.6.12-rc2 |
3418 3419 3420 3421 3422 3423 3424 3425 |
int ret; int size; union inparam { struct floppy_struct g; /* geometry */ struct format_descr f; struct floppy_max_errors max_errors; struct floppy_drive_params dp; } inparam; /* parameters coming from user space */ |
724ee626f drivers/block/flo... |
3426 |
const void *outparam; /* parameters passed back to user space */ |
1da177e4c Linux-2.6.12-rc2 |
3427 3428 3429 3430 3431 |
/* convert compatibility eject ioctls into floppy eject ioctl. * We do this in order to provide a means to eject floppy disks before * installing the new fdutils package */ if (cmd == CDROMEJECT || /* CD-ROM eject */ |
a81ee5447 drivers/block/flo... |
3432 |
cmd == 0x6470) { /* SunOS floppy eject */ |
1da177e4c Linux-2.6.12-rc2 |
3433 3434 3435 3436 3437 3438 |
DPRINT("obsolete eject ioctl "); DPRINT("please use floppycontrol --eject "); cmd = FDEJECT; } |
a81ee5447 drivers/block/flo... |
3439 |
if (!((cmd & 0xff00) == 0x0200)) |
1da177e4c Linux-2.6.12-rc2 |
3440 |
return -EINVAL; |
a81ee5447 drivers/block/flo... |
3441 |
/* convert the old style command into a new style command */ |
4575b5528 drivers/block/flo... |
3442 3443 3444 |
ret = normalize_ioctl(&cmd, &size); if (ret) return ret; |
a81ee5447 drivers/block/flo... |
3445 |
|
1da177e4c Linux-2.6.12-rc2 |
3446 |
/* permission checks */ |
0aad92cfe drivers/block/flo... |
3447 |
if (((cmd & 0x40) && !(mode & (FMODE_WRITE | FMODE_WRITE_IOCTL))) || |
1da177e4c Linux-2.6.12-rc2 |
3448 3449 |
((cmd & 0x80) && !capable(CAP_SYS_ADMIN))) return -EPERM; |
2886a8bdf floppy: Add an ex... |
3450 3451 |
if (WARN_ON(size < 0 || size > sizeof(inparam))) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
3452 |
/* copyin */ |
b87c9e0a8 drivers/block/flo... |
3453 |
memset(&inparam, 0, sizeof(inparam)); |
4575b5528 drivers/block/flo... |
3454 3455 3456 3457 3458 |
if (_IOC_DIR(cmd) & _IOC_WRITE) { ret = fd_copyin((void __user *)param, &inparam, size); if (ret) return ret; } |
1da177e4c Linux-2.6.12-rc2 |
3459 |
|
da2736534 drivers/block/flo... |
3460 3461 3462 3463 3464 |
switch (cmd) { case FDEJECT: if (UDRS->fd_ref != 1) /* somebody else has this drive open */ return -EBUSY; |
a0c80efe5 floppy: fix lock_... |
3465 |
if (lock_fdc(drive)) |
52a0d61f6 drivers/block/flo... |
3466 |
return -EINTR; |
1da177e4c Linux-2.6.12-rc2 |
3467 |
|
da2736534 drivers/block/flo... |
3468 3469 3470 |
/* do the actual eject. Fails on * non-Sparc architectures */ ret = fd_eject(UNIT(drive)); |
1da177e4c Linux-2.6.12-rc2 |
3471 |
|
e02985361 drivers/block/flo... |
3472 3473 |
set_bit(FD_DISK_CHANGED_BIT, &UDRS->flags); set_bit(FD_VERIFY_BIT, &UDRS->flags); |
da2736534 drivers/block/flo... |
3474 3475 3476 |
process_fd_request(); return ret; case FDCLRPRM: |
a0c80efe5 floppy: fix lock_... |
3477 |
if (lock_fdc(drive)) |
52a0d61f6 drivers/block/flo... |
3478 |
return -EINTR; |
da2736534 drivers/block/flo... |
3479 3480 3481 3482 3483 3484 3485 3486 |
current_type[drive] = NULL; floppy_sizes[drive] = MAX_DISK_SIZE << 1; UDRS->keep_data = 0; return invalidate_drive(bdev); case FDSETPRM: case FDDEFPRM: return set_geometry(cmd, &inparam.g, drive, type, bdev); case FDGETPRM: |
4575b5528 drivers/block/flo... |
3487 |
ret = get_floppy_geometry(drive, type, |
724ee626f drivers/block/flo... |
3488 |
(struct floppy_struct **)&outparam); |
4575b5528 drivers/block/flo... |
3489 3490 |
if (ret) return ret; |
da2736534 drivers/block/flo... |
3491 3492 3493 3494 3495 3496 3497 3498 |
break; case FDMSGON: UDP->flags |= FTD_MSG; return 0; case FDMSGOFF: UDP->flags &= ~FTD_MSG; return 0; case FDFMTBEG: |
a0c80efe5 floppy: fix lock_... |
3499 |
if (lock_fdc(drive)) |
52a0d61f6 drivers/block/flo... |
3500 |
return -EINTR; |
74f63f469 drivers/block/flo... |
3501 |
if (poll_drive(true, FD_RAW_NEED_DISK) == -EINTR) |
4575b5528 drivers/block/flo... |
3502 |
return -EINTR; |
da2736534 drivers/block/flo... |
3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 |
ret = UDRS->flags; process_fd_request(); if (ret & FD_VERIFY) return -ENODEV; if (!(ret & FD_DISK_WRITABLE)) return -EROFS; return 0; case FDFMTTRK: if (UDRS->fd_ref != 1) return -EBUSY; return do_format(drive, &inparam.f); case FDFMTEND: case FDFLUSH: |
a0c80efe5 floppy: fix lock_... |
3516 |
if (lock_fdc(drive)) |
52a0d61f6 drivers/block/flo... |
3517 |
return -EINTR; |
da2736534 drivers/block/flo... |
3518 3519 3520 3521 3522 |
return invalidate_drive(bdev); case FDSETEMSGTRESH: UDP->max_errors.reporting = (unsigned short)(param & 0x0f); return 0; case FDGETMAXERRS: |
724ee626f drivers/block/flo... |
3523 |
outparam = &UDP->max_errors; |
da2736534 drivers/block/flo... |
3524 3525 3526 3527 3528 3529 |
break; case FDSETMAXERRS: UDP->max_errors = inparam.max_errors; break; case FDGETDRVTYP: outparam = drive_name(type, drive); |
724ee626f drivers/block/flo... |
3530 |
SUPBOUND(size, strlen((const char *)outparam) + 1); |
da2736534 drivers/block/flo... |
3531 3532 3533 3534 3535 |
break; case FDSETDRVPRM: *UDP = inparam.dp; break; case FDGETDRVPRM: |
724ee626f drivers/block/flo... |
3536 |
outparam = UDP; |
da2736534 drivers/block/flo... |
3537 3538 |
break; case FDPOLLDRVSTAT: |
a0c80efe5 floppy: fix lock_... |
3539 |
if (lock_fdc(drive)) |
52a0d61f6 drivers/block/flo... |
3540 |
return -EINTR; |
74f63f469 drivers/block/flo... |
3541 |
if (poll_drive(true, FD_RAW_NEED_DISK) == -EINTR) |
4575b5528 drivers/block/flo... |
3542 |
return -EINTR; |
da2736534 drivers/block/flo... |
3543 3544 3545 |
process_fd_request(); /* fall through */ case FDGETDRVSTAT: |
724ee626f drivers/block/flo... |
3546 |
outparam = UDRS; |
da2736534 drivers/block/flo... |
3547 3548 |
break; case FDRESET: |
74f63f469 drivers/block/flo... |
3549 |
return user_reset_fdc(drive, (int)param, true); |
da2736534 drivers/block/flo... |
3550 |
case FDGETFDCSTAT: |
724ee626f drivers/block/flo... |
3551 |
outparam = UFDCS; |
da2736534 drivers/block/flo... |
3552 3553 3554 3555 3556 |
break; case FDWERRORCLR: memset(UDRWE, 0, sizeof(*UDRWE)); return 0; case FDWERRORGET: |
724ee626f drivers/block/flo... |
3557 |
outparam = UDRWE; |
da2736534 drivers/block/flo... |
3558 3559 3560 |
break; case FDRAWCMD: if (type) |
1da177e4c Linux-2.6.12-rc2 |
3561 |
return -EINVAL; |
a0c80efe5 floppy: fix lock_... |
3562 |
if (lock_fdc(drive)) |
52a0d61f6 drivers/block/flo... |
3563 |
return -EINTR; |
da2736534 drivers/block/flo... |
3564 |
set_floppy(drive); |
4575b5528 drivers/block/flo... |
3565 3566 3567 |
i = raw_cmd_ioctl(cmd, (void __user *)param); if (i == -EINTR) return -EINTR; |
da2736534 drivers/block/flo... |
3568 3569 3570 |
process_fd_request(); return i; case FDTWADDLE: |
a0c80efe5 floppy: fix lock_... |
3571 |
if (lock_fdc(drive)) |
52a0d61f6 drivers/block/flo... |
3572 |
return -EINTR; |
da2736534 drivers/block/flo... |
3573 3574 3575 3576 3577 3578 |
twaddle(); process_fd_request(); return 0; default: return -EINVAL; } |
1da177e4c Linux-2.6.12-rc2 |
3579 3580 3581 |
if (_IOC_DIR(cmd) & _IOC_READ) return fd_copyout((void __user *)param, outparam, size); |
da2736534 drivers/block/flo... |
3582 3583 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
3584 |
} |
8a6cfeb6d block: push down ... |
3585 3586 3587 3588 |
static int fd_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long param) { int ret; |
2a48fc0ab block: autoconver... |
3589 |
mutex_lock(&floppy_mutex); |
8a6cfeb6d block: push down ... |
3590 |
ret = fd_locked_ioctl(bdev, mode, cmd, param); |
2a48fc0ab block: autoconver... |
3591 |
mutex_unlock(&floppy_mutex); |
8a6cfeb6d block: push down ... |
3592 3593 3594 |
return ret; } |
1da177e4c Linux-2.6.12-rc2 |
3595 3596 |
static void __init config_types(void) { |
b46df356d drivers/block/flo... |
3597 |
bool has_drive = false; |
1da177e4c Linux-2.6.12-rc2 |
3598 3599 3600 3601 3602 3603 3604 3605 3606 |
int drive; /* read drive info out of physical CMOS */ drive = 0; if (!UDP->cmos) UDP->cmos = FLOPPY0_TYPE; drive = 1; if (!UDP->cmos && FLOPPY1_TYPE) UDP->cmos = FLOPPY1_TYPE; |
06f748c47 floppy: do a very... |
3607 |
/* FIXME: additional physical CMOS drive detection should go here */ |
1da177e4c Linux-2.6.12-rc2 |
3608 3609 3610 3611 3612 |
for (drive = 0; drive < N_DRIVE; drive++) { unsigned int type = UDP->cmos; struct floppy_drive_params *params; const char *name = NULL; |
bcf4299e6 floppy: make loca... |
3613 |
char temparea[32]; |
1da177e4c Linux-2.6.12-rc2 |
3614 |
|
945f390f0 [PATCH] drivers/b... |
3615 |
if (type < ARRAY_SIZE(default_drive_params)) { |
1da177e4c Linux-2.6.12-rc2 |
3616 3617 3618 3619 3620 3621 3622 3623 |
params = &default_drive_params[type].params; if (type) { name = default_drive_params[type].name; allowed_drive_mask |= 1 << drive; } else allowed_drive_mask &= ~(1 << drive); } else { params = &default_drive_params[0].params; |
bcf4299e6 floppy: make loca... |
3624 3625 |
snprintf(temparea, sizeof(temparea), "unknown type %d (usb?)", type); |
1da177e4c Linux-2.6.12-rc2 |
3626 3627 3628 |
name = temparea; } if (name) { |
b46df356d drivers/block/flo... |
3629 3630 3631 3632 3633 3634 3635 |
const char *prepend; if (!has_drive) { prepend = ""; has_drive = true; pr_info("Floppy drive(s):"); } else { prepend = ","; |
1da177e4c Linux-2.6.12-rc2 |
3636 |
} |
b46df356d drivers/block/flo... |
3637 3638 |
pr_cont("%s fd%d is %s", prepend, drive, name); |
1da177e4c Linux-2.6.12-rc2 |
3639 3640 3641 |
} *UDP = *params; } |
b46df356d drivers/block/flo... |
3642 3643 3644 3645 |
if (has_drive) pr_cont(" "); |
1da177e4c Linux-2.6.12-rc2 |
3646 |
} |
db2a144be block_device_oper... |
3647 |
static void floppy_release(struct gendisk *disk, fmode_t mode) |
1da177e4c Linux-2.6.12-rc2 |
3648 |
{ |
a4af9b48c [PATCH] switch fl... |
3649 |
int drive = (long)disk->private_data; |
1da177e4c Linux-2.6.12-rc2 |
3650 |
|
2a48fc0ab block: autoconver... |
3651 |
mutex_lock(&floppy_mutex); |
b1c82b5c5 [PATCH] sem2mutex... |
3652 |
mutex_lock(&open_lock); |
bfa10b8c9 floppy: remove fl... |
3653 |
if (!UDRS->fd_ref--) { |
1da177e4c Linux-2.6.12-rc2 |
3654 3655 3656 3657 3658 |
DPRINT("floppy_release with fd_ref == 0"); UDRS->fd_ref = 0; } if (!UDRS->fd_ref) opened_bdev[drive] = NULL; |
b1c82b5c5 [PATCH] sem2mutex... |
3659 |
mutex_unlock(&open_lock); |
2a48fc0ab block: autoconver... |
3660 |
mutex_unlock(&floppy_mutex); |
1da177e4c Linux-2.6.12-rc2 |
3661 3662 3663 3664 3665 3666 3667 |
} /* * floppy_open check for aliasing (/dev/fd0 can be the same as * /dev/PS0 etc), and disallows simultaneous access to the same * drive with different device numbers. */ |
a4af9b48c [PATCH] switch fl... |
3668 |
static int floppy_open(struct block_device *bdev, fmode_t mode) |
1da177e4c Linux-2.6.12-rc2 |
3669 |
{ |
a4af9b48c [PATCH] switch fl... |
3670 3671 |
int drive = (long)bdev->bd_disk->private_data; int old_dev, new_dev; |
1da177e4c Linux-2.6.12-rc2 |
3672 3673 3674 |
int try; int res = -EBUSY; char *tmp; |
2a48fc0ab block: autoconver... |
3675 |
mutex_lock(&floppy_mutex); |
b1c82b5c5 [PATCH] sem2mutex... |
3676 |
mutex_lock(&open_lock); |
1da177e4c Linux-2.6.12-rc2 |
3677 |
old_dev = UDRS->fd_device; |
a4af9b48c [PATCH] switch fl... |
3678 |
if (opened_bdev[drive] && opened_bdev[drive] != bdev) |
1da177e4c Linux-2.6.12-rc2 |
3679 3680 3681 |
goto out2; if (!UDRS->fd_ref && (UDP->flags & FD_BROKEN_DCL)) { |
e02985361 drivers/block/flo... |
3682 3683 |
set_bit(FD_DISK_CHANGED_BIT, &UDRS->flags); set_bit(FD_VERIFY_BIT, &UDRS->flags); |
1da177e4c Linux-2.6.12-rc2 |
3684 |
} |
bfa10b8c9 floppy: remove fl... |
3685 |
UDRS->fd_ref++; |
1da177e4c Linux-2.6.12-rc2 |
3686 |
|
a4af9b48c [PATCH] switch fl... |
3687 |
opened_bdev[drive] = bdev; |
1da177e4c Linux-2.6.12-rc2 |
3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 |
res = -ENXIO; if (!floppy_track_buffer) { /* if opening an ED drive, reserve a big buffer, * else reserve a small one */ if ((UDP->cmos == 6) || (UDP->cmos == 5)) try = 64; /* Only 48 actually useful */ else try = 32; /* Only 24 actually useful */ tmp = (char *)fd_dma_mem_alloc(1024 * try); if (!tmp && !floppy_track_buffer) { try >>= 1; /* buffer only one side */ INFBOUND(try, 16); tmp = (char *)fd_dma_mem_alloc(1024 * try); } |
a81ee5447 drivers/block/flo... |
3705 |
if (!tmp && !floppy_track_buffer) |
1da177e4c Linux-2.6.12-rc2 |
3706 |
fallback_on_nodma_alloc(&tmp, 2048 * try); |
1da177e4c Linux-2.6.12-rc2 |
3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 |
if (!tmp && !floppy_track_buffer) { DPRINT("Unable to allocate DMA memory "); goto out; } if (floppy_track_buffer) { if (tmp) fd_dma_mem_free((unsigned long)tmp, try * 1024); } else { buffer_min = buffer_max = -1; floppy_track_buffer = tmp; max_buffer_sectors = try; } } |
a4af9b48c [PATCH] switch fl... |
3721 3722 3723 3724 |
new_dev = MINOR(bdev->bd_dev); UDRS->fd_device = new_dev; set_capacity(disks[drive], floppy_sizes[new_dev]); if (old_dev != -1 && old_dev != new_dev) { |
1da177e4c Linux-2.6.12-rc2 |
3725 3726 3727 |
if (buffer_drive == drive) buffer_track = -1; } |
1da177e4c Linux-2.6.12-rc2 |
3728 3729 |
if (UFDCS->rawcmd == 1) UFDCS->rawcmd = 2; |
f2791e7ea Revert "floppy: r... |
3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 |
if (!(mode & FMODE_NDELAY)) { if (mode & (FMODE_READ|FMODE_WRITE)) { UDRS->last_checked = 0; clear_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags); check_disk_change(bdev); if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags)) goto out; if (test_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags)) goto out; } res = -EROFS; if ((mode & FMODE_WRITE) && !test_bit(FD_DISK_WRITABLE_BIT, &UDRS->flags)) goto out; } |
b1c82b5c5 [PATCH] sem2mutex... |
3745 |
mutex_unlock(&open_lock); |
2a48fc0ab block: autoconver... |
3746 |
mutex_unlock(&floppy_mutex); |
1da177e4c Linux-2.6.12-rc2 |
3747 3748 |
return 0; out: |
bfa10b8c9 floppy: remove fl... |
3749 |
UDRS->fd_ref--; |
1da177e4c Linux-2.6.12-rc2 |
3750 3751 |
if (!UDRS->fd_ref) opened_bdev[drive] = NULL; |
1da177e4c Linux-2.6.12-rc2 |
3752 |
out2: |
b1c82b5c5 [PATCH] sem2mutex... |
3753 |
mutex_unlock(&open_lock); |
2a48fc0ab block: autoconver... |
3754 |
mutex_unlock(&floppy_mutex); |
1da177e4c Linux-2.6.12-rc2 |
3755 3756 3757 3758 3759 3760 |
return res; } /* * Check if the disk has been changed or if a change has been faked. */ |
1a8a74f03 floppy,{ami|ata}f... |
3761 3762 |
static unsigned int floppy_check_events(struct gendisk *disk, unsigned int clearing) |
1da177e4c Linux-2.6.12-rc2 |
3763 3764 |
{ int drive = (long)disk->private_data; |
e02985361 drivers/block/flo... |
3765 3766 |
if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags) || test_bit(FD_VERIFY_BIT, &UDRS->flags)) |
1a8a74f03 floppy,{ami|ata}f... |
3767 |
return DISK_EVENT_MEDIA_CHANGE; |
1da177e4c Linux-2.6.12-rc2 |
3768 |
|
50297cbf0 [PATCH] drivers/b... |
3769 |
if (time_after(jiffies, UDRS->last_checked + UDP->checkfreq)) { |
a0c80efe5 floppy: fix lock_... |
3770 3771 |
if (lock_fdc(drive)) return -EINTR; |
74f63f469 drivers/block/flo... |
3772 |
poll_drive(false, 0); |
1da177e4c Linux-2.6.12-rc2 |
3773 |
process_fd_request(); |
1da177e4c Linux-2.6.12-rc2 |
3774 |
} |
e02985361 drivers/block/flo... |
3775 3776 |
if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags) || test_bit(FD_VERIFY_BIT, &UDRS->flags) || |
1da177e4c Linux-2.6.12-rc2 |
3777 |
test_bit(drive, &fake_change) || |
2b51dca79 floppy: replace N... |
3778 |
drive_no_geom(drive)) |
1a8a74f03 floppy,{ami|ata}f... |
3779 |
return DISK_EVENT_MEDIA_CHANGE; |
1da177e4c Linux-2.6.12-rc2 |
3780 3781 3782 3783 3784 3785 3786 3787 |
return 0; } /* * This implements "read block 0" for floppy_revalidate(). * Needed for format autodetection, checking whether there is * a disk in the drive, and whether that disk is writable. */ |
7b7b68bba floppy: bail out ... |
3788 3789 3790 3791 |
struct rb0_cbdata { int drive; struct completion complete; }; |
4246a0b63 block: add a bi_e... |
3792 |
static void floppy_rb0_cb(struct bio *bio) |
1da177e4c Linux-2.6.12-rc2 |
3793 |
{ |
7b7b68bba floppy: bail out ... |
3794 3795 |
struct rb0_cbdata *cbdata = (struct rb0_cbdata *)bio->bi_private; int drive = cbdata->drive; |
4246a0b63 block: add a bi_e... |
3796 3797 3798 3799 |
if (bio->bi_error) { pr_info("floppy: error %d while reading block 0 ", bio->bi_error); |
7b7b68bba floppy: bail out ... |
3800 3801 3802 |
set_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags); } complete(&cbdata->complete); |
1da177e4c Linux-2.6.12-rc2 |
3803 |
} |
7b7b68bba floppy: bail out ... |
3804 |
static int __floppy_read_block_0(struct block_device *bdev, int drive) |
1da177e4c Linux-2.6.12-rc2 |
3805 3806 3807 |
{ struct bio bio; struct bio_vec bio_vec; |
1da177e4c Linux-2.6.12-rc2 |
3808 |
struct page *page; |
7b7b68bba floppy: bail out ... |
3809 |
struct rb0_cbdata cbdata; |
1da177e4c Linux-2.6.12-rc2 |
3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 |
size_t size; page = alloc_page(GFP_NOIO); if (!page) { process_fd_request(); return -ENOMEM; } size = bdev->bd_block_size; if (!size) size = 1024; |
7b7b68bba floppy: bail out ... |
3821 |
cbdata.drive = drive; |
3a83f4677 block: bio: pass ... |
3822 |
bio_init(&bio, &bio_vec, 1); |
1da177e4c Linux-2.6.12-rc2 |
3823 |
bio.bi_bdev = bdev; |
2c73a603c block: floppy: us... |
3824 |
bio_add_page(&bio, page, size, 0); |
4f024f379 block: Abstract o... |
3825 |
bio.bi_iter.bi_sector = 0; |
6314a108e floppy: do not co... |
3826 |
bio.bi_flags |= (1 << BIO_QUIET); |
7b7b68bba floppy: bail out ... |
3827 3828 |
bio.bi_private = &cbdata; bio.bi_end_io = floppy_rb0_cb; |
95fe6c1a2 block, fs, mm, dr... |
3829 |
bio_set_op_attrs(&bio, REQ_OP_READ, 0); |
1da177e4c Linux-2.6.12-rc2 |
3830 |
|
4e49ea4a3 block/fs/drivers:... |
3831 |
submit_bio(&bio); |
1da177e4c Linux-2.6.12-rc2 |
3832 |
process_fd_request(); |
7b7b68bba floppy: bail out ... |
3833 3834 3835 |
init_completion(&cbdata.complete); wait_for_completion(&cbdata.complete); |
1da177e4c Linux-2.6.12-rc2 |
3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 |
__free_page(page); return 0; } /* revalidate the floppy disk, i.e. trigger format autodetection by reading * the bootblock (block 0). "Autodetection" is also needed to check whether * there is a disk in the drive at all... Thus we also do it for fixed * geometry formats */ static int floppy_revalidate(struct gendisk *disk) { int drive = (long)disk->private_data; |
1da177e4c Linux-2.6.12-rc2 |
3849 3850 |
int cf; int res = 0; |
e02985361 drivers/block/flo... |
3851 3852 |
if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags) || test_bit(FD_VERIFY_BIT, &UDRS->flags) || |
2b51dca79 floppy: replace N... |
3853 3854 |
test_bit(drive, &fake_change) || drive_no_geom(drive)) { |
01b6b67ed floppy: use warni... |
3855 3856 3857 |
if (WARN(atomic_read(&usage_count) == 0, "VFS: revalidate called on non-open device. ")) |
1da177e4c Linux-2.6.12-rc2 |
3858 |
return -EFAULT; |
01b6b67ed floppy: use warni... |
3859 |
|
a0c80efe5 floppy: fix lock_... |
3860 3861 3862 |
res = lock_fdc(drive); if (res) return res; |
e02985361 drivers/block/flo... |
3863 3864 |
cf = (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags) || test_bit(FD_VERIFY_BIT, &UDRS->flags)); |
2b51dca79 floppy: replace N... |
3865 |
if (!(cf || test_bit(drive, &fake_change) || drive_no_geom(drive))) { |
1da177e4c Linux-2.6.12-rc2 |
3866 3867 3868 3869 3870 3871 3872 3873 |
process_fd_request(); /*already done by another thread */ return 0; } UDRS->maxblock = 0; UDRS->maxtrack = 0; if (buffer_drive == drive) buffer_track = -1; clear_bit(drive, &fake_change); |
e02985361 drivers/block/flo... |
3874 |
clear_bit(FD_DISK_CHANGED_BIT, &UDRS->flags); |
1da177e4c Linux-2.6.12-rc2 |
3875 3876 |
if (cf) UDRS->generation++; |
2b51dca79 floppy: replace N... |
3877 |
if (drive_no_geom(drive)) { |
1da177e4c Linux-2.6.12-rc2 |
3878 |
/* auto-sensing */ |
7b7b68bba floppy: bail out ... |
3879 |
res = __floppy_read_block_0(opened_bdev[drive], drive); |
1da177e4c Linux-2.6.12-rc2 |
3880 3881 |
} else { if (cf) |
74f63f469 drivers/block/flo... |
3882 |
poll_drive(false, FD_RAW_NEED_DISK); |
1da177e4c Linux-2.6.12-rc2 |
3883 3884 3885 3886 3887 3888 |
process_fd_request(); } } set_capacity(disk, floppy_sizes[UDRS->fd_device]); return res; } |
83d5cde47 const: make block... |
3889 |
static const struct block_device_operations floppy_fops = { |
06f748c47 floppy: do a very... |
3890 |
.owner = THIS_MODULE, |
a4af9b48c [PATCH] switch fl... |
3891 3892 |
.open = floppy_open, .release = floppy_release, |
8a6cfeb6d block: push down ... |
3893 |
.ioctl = fd_ioctl, |
06f748c47 floppy: do a very... |
3894 |
.getgeo = fd_getgeo, |
1a8a74f03 floppy,{ami|ata}f... |
3895 |
.check_events = floppy_check_events, |
06f748c47 floppy: do a very... |
3896 |
.revalidate_disk = floppy_revalidate, |
1da177e4c Linux-2.6.12-rc2 |
3897 |
}; |
1da177e4c Linux-2.6.12-rc2 |
3898 |
|
1da177e4c Linux-2.6.12-rc2 |
3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 |
/* * Floppy Driver initialization * ============================= */ /* Determine the floppy disk controller type */ /* This routine was written by David C. Niemi */ static char __init get_fdc_version(void) { int r; output_byte(FD_DUMPREGS); /* 82072 and better know DUMPREGS */ if (FDCS->reset) return FDC_NONE; |
d7b2b2ecd drivers/block/flo... |
3913 3914 |
r = result(); if (r <= 0x00) |
1da177e4c Linux-2.6.12-rc2 |
3915 3916 |
return FDC_NONE; /* No FDC present ??? */ if ((r == 1) && (reply_buffer[0] == 0x80)) { |
b46df356d drivers/block/flo... |
3917 3918 |
pr_info("FDC %d is an 8272A ", fdc); |
1da177e4c Linux-2.6.12-rc2 |
3919 3920 3921 |
return FDC_8272A; /* 8272a/765 don't know DUMPREGS */ } if (r != 10) { |
b46df356d drivers/block/flo... |
3922 3923 3924 |
pr_info("FDC %d init: DUMPREGS: unexpected return of %d bytes. ", fdc, r); |
1da177e4c Linux-2.6.12-rc2 |
3925 3926 3927 3928 |
return FDC_UNKNOWN; } if (!fdc_configure()) { |
b46df356d drivers/block/flo... |
3929 3930 |
pr_info("FDC %d is an 82072 ", fdc); |
1da177e4c Linux-2.6.12-rc2 |
3931 3932 3933 3934 3935 3936 3937 |
return FDC_82072; /* 82072 doesn't know CONFIGURE */ } output_byte(FD_PERPENDICULAR); if (need_more_output() == MORE_OUTPUT) { output_byte(0); } else { |
b46df356d drivers/block/flo... |
3938 3939 |
pr_info("FDC %d is an 82072A ", fdc); |
1da177e4c Linux-2.6.12-rc2 |
3940 3941 3942 3943 3944 3945 |
return FDC_82072A; /* 82072A as found on Sparcs. */ } output_byte(FD_UNLOCK); r = result(); if ((r == 1) && (reply_buffer[0] == 0x80)) { |
b46df356d drivers/block/flo... |
3946 3947 |
pr_info("FDC %d is a pre-1991 82077 ", fdc); |
d7b2b2ecd drivers/block/flo... |
3948 |
return FDC_82077_ORIG; /* Pre-1991 82077, doesn't know |
1da177e4c Linux-2.6.12-rc2 |
3949 3950 3951 |
* LOCK/UNLOCK */ } if ((r != 1) || (reply_buffer[0] != 0x00)) { |
b46df356d drivers/block/flo... |
3952 3953 3954 |
pr_info("FDC %d init: UNLOCK: unexpected return of %d bytes. ", fdc, r); |
1da177e4c Linux-2.6.12-rc2 |
3955 3956 3957 3958 3959 |
return FDC_UNKNOWN; } output_byte(FD_PARTID); r = result(); if (r != 1) { |
b46df356d drivers/block/flo... |
3960 3961 3962 |
pr_info("FDC %d init: PARTID: unexpected return of %d bytes. ", fdc, r); |
1da177e4c Linux-2.6.12-rc2 |
3963 3964 3965 |
return FDC_UNKNOWN; } if (reply_buffer[0] == 0x80) { |
b46df356d drivers/block/flo... |
3966 3967 |
pr_info("FDC %d is a post-1991 82077 ", fdc); |
1da177e4c Linux-2.6.12-rc2 |
3968 3969 3970 3971 3972 |
return FDC_82077; /* Revised 82077AA passes all the tests */ } switch (reply_buffer[0] >> 5) { case 0x0: /* Either a 82078-1 or a 82078SL running at 5Volt */ |
b46df356d drivers/block/flo... |
3973 3974 |
pr_info("FDC %d is an 82078. ", fdc); |
1da177e4c Linux-2.6.12-rc2 |
3975 3976 |
return FDC_82078; case 0x1: |
b46df356d drivers/block/flo... |
3977 3978 |
pr_info("FDC %d is a 44pin 82078 ", fdc); |
1da177e4c Linux-2.6.12-rc2 |
3979 3980 |
return FDC_82078; case 0x2: |
b46df356d drivers/block/flo... |
3981 3982 |
pr_info("FDC %d is a S82078B ", fdc); |
1da177e4c Linux-2.6.12-rc2 |
3983 3984 |
return FDC_S82078B; case 0x3: |
b46df356d drivers/block/flo... |
3985 3986 |
pr_info("FDC %d is a National Semiconductor PC87306 ", fdc); |
1da177e4c Linux-2.6.12-rc2 |
3987 3988 |
return FDC_87306; default: |
b46df356d drivers/block/flo... |
3989 3990 3991 |
pr_info("FDC %d init: 82078 variant with unknown PARTID=%d. ", fdc, reply_buffer[0] >> 5); |
1da177e4c Linux-2.6.12-rc2 |
3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 |
return FDC_82078_UNKN; } } /* get_fdc_version */ /* lilo configuration */ static void __init floppy_set_flags(int *ints, int param, int param2) { int i; for (i = 0; i < ARRAY_SIZE(default_drive_params); i++) { if (param) default_drive_params[i].params.flags |= param2; else default_drive_params[i].params.flags &= ~param2; } DPRINT("%s flag 0x%x ", param2 ? "Setting" : "Clearing", param); } static void __init daring(int *ints, int param, int param2) { int i; for (i = 0; i < ARRAY_SIZE(default_drive_params); i++) { if (param) { default_drive_params[i].params.select_delay = 0; default_drive_params[i].params.flags |= FD_SILENT_DCL_CLEAR; } else { default_drive_params[i].params.select_delay = 2 * HZ / 100; default_drive_params[i].params.flags &= ~FD_SILENT_DCL_CLEAR; } } DPRINT("Assuming %s floppy hardware ", param ? "standard" : "broken"); } static void __init set_cmos(int *ints, int dummy, int dummy2) { int current_drive = 0; if (ints[0] != 2) { DPRINT("wrong number of parameters for CMOS "); return; } current_drive = ints[1]; if (current_drive < 0 || current_drive >= 8) { DPRINT("bad drive for set_cmos "); return; } #if N_FDC > 1 if (current_drive >= 4 && !FDC2) FDC2 = 0x370; #endif DP->cmos = ints[2]; DPRINT("setting CMOS code to %d ", ints[2]); } static struct param_table { const char *name; void (*fn) (int *ints, int param, int param2); int *var; int def_param; int param2; } config_params[] __initdata = { {"allowed_drive_mask", NULL, &allowed_drive_mask, 0xff, 0}, /* obsolete */ {"all_drives", NULL, &allowed_drive_mask, 0xff, 0}, /* obsolete */ {"asus_pci", NULL, &allowed_drive_mask, 0x33, 0}, {"irq", NULL, &FLOPPY_IRQ, 6, 0}, {"dma", NULL, &FLOPPY_DMA, 2, 0}, {"daring", daring, NULL, 1, 0}, #if N_FDC > 1 {"two_fdc", NULL, &FDC2, 0x370, 0}, {"one_fdc", NULL, &FDC2, 0, 0}, #endif {"thinkpad", floppy_set_flags, NULL, 1, FD_INVERTED_DCL}, {"broken_dcl", floppy_set_flags, NULL, 1, FD_BROKEN_DCL}, {"messages", floppy_set_flags, NULL, 1, FTD_MSG}, {"silent_dcl_clear", floppy_set_flags, NULL, 1, FD_SILENT_DCL_CLEAR}, {"debug", floppy_set_flags, NULL, 1, FD_DEBUG}, {"nodma", NULL, &can_use_virtual_dma, 1, 0}, {"omnibook", NULL, &can_use_virtual_dma, 1, 0}, {"yesdma", NULL, &can_use_virtual_dma, 0, 0}, {"fifo_depth", NULL, &fifo_depth, 0xa, 0}, {"nofifo", NULL, &no_fifo, 0x20, 0}, {"usefifo", NULL, &no_fifo, 0, 0}, {"cmos", set_cmos, NULL, 0, 0}, {"slow", NULL, &slow_floppy, 1, 0}, {"unexpected_interrupts", NULL, &print_unex, 1, 0}, {"no_unexpected_interrupts", NULL, &print_unex, 0, 0}, {"L40SX", NULL, &print_unex, 0, 0} EXTRA_FLOPPY_PARAMS }; static int __init floppy_setup(char *str) { int i; int param; int ints[11]; str = get_options(str, ARRAY_SIZE(ints), ints); if (str) { for (i = 0; i < ARRAY_SIZE(config_params); i++) { if (strcmp(str, config_params[i].name) == 0) { if (ints[0]) param = ints[1]; else param = config_params[i].def_param; if (config_params[i].fn) |
bb57f0c66 drivers/block/flo... |
4108 4109 4110 |
config_params[i].fn(ints, param, config_params[i]. param2); |
1da177e4c Linux-2.6.12-rc2 |
4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 |
if (config_params[i].var) { DPRINT("%s=%d ", str, param); *config_params[i].var = param; } return 1; } } } if (str) { DPRINT("unknown floppy option [%s] ", str); DPRINT("allowed options are:"); for (i = 0; i < ARRAY_SIZE(config_params); i++) |
b46df356d drivers/block/flo... |
4126 4127 4128 |
pr_cont(" %s", config_params[i].name); pr_cont(" "); |
1da177e4c Linux-2.6.12-rc2 |
4129 4130 4131 |
} else DPRINT("botched floppy option "); |
31c00fc15 Create/use more d... |
4132 4133 |
DPRINT("Read Documentation/blockdev/floppy.txt "); |
1da177e4c Linux-2.6.12-rc2 |
4134 4135 4136 4137 |
return 0; } static int have_no_fdc = -ENODEV; |
9a8af6b3b [PATCH] Floppy: a... |
4138 4139 |
static ssize_t floppy_cmos_show(struct device *dev, struct device_attribute *attr, char *buf) |
94fd0db7b [PATCH] Floppy: A... |
4140 |
{ |
71b3e0c1a platform: make be... |
4141 |
struct platform_device *p = to_platform_device(dev); |
9a8af6b3b [PATCH] Floppy: a... |
4142 |
int drive; |
94fd0db7b [PATCH] Floppy: A... |
4143 |
|
9a8af6b3b [PATCH] Floppy: a... |
4144 4145 4146 |
drive = p->id; return sprintf(buf, "%X ", UDP->cmos); |
94fd0db7b [PATCH] Floppy: A... |
4147 |
} |
48c8cee61 drivers/block/flo... |
4148 |
|
be1c0fbfb floppy: cmos attr... |
4149 |
static DEVICE_ATTR(cmos, S_IRUGO, floppy_cmos_show, NULL); |
94fd0db7b [PATCH] Floppy: A... |
4150 |
|
b7f120b21 floppy: Avoid man... |
4151 4152 4153 4154 4155 4156 |
static struct attribute *floppy_dev_attrs[] = { &dev_attr_cmos.attr, NULL }; ATTRIBUTE_GROUPS(floppy_dev); |
1da177e4c Linux-2.6.12-rc2 |
4157 4158 |
static void floppy_device_release(struct device *dev) { |
1da177e4c Linux-2.6.12-rc2 |
4159 |
} |
c90cd332d floppy: Switch dr... |
4160 |
static int floppy_resume(struct device *dev) |
5e50b9ef9 floppy: fix hiber... |
4161 4162 4163 4164 4165 |
{ int fdc; for (fdc = 0; fdc < N_FDC; fdc++) if (FDCS->address != -1) |
74f63f469 drivers/block/flo... |
4166 |
user_reset_fdc(-1, FD_RESET_ALWAYS, false); |
5e50b9ef9 floppy: fix hiber... |
4167 4168 4169 |
return 0; } |
471452104 const: constify r... |
4170 |
static const struct dev_pm_ops floppy_pm_ops = { |
5e50b9ef9 floppy: fix hiber... |
4171 |
.resume = floppy_resume, |
c90cd332d floppy: Switch dr... |
4172 4173 4174 4175 |
.restore = floppy_resume, }; static struct platform_driver floppy_driver = { |
5e50b9ef9 floppy: fix hiber... |
4176 |
.driver = { |
bb57f0c66 drivers/block/flo... |
4177 4178 |
.name = "floppy", .pm = &floppy_pm_ops, |
5e50b9ef9 floppy: fix hiber... |
4179 4180 |
}, }; |
94fd0db7b [PATCH] Floppy: A... |
4181 |
static struct platform_device floppy_device[N_DRIVE]; |
1da177e4c Linux-2.6.12-rc2 |
4182 |
|
8d3ab4ebf floppy: use commo... |
4183 4184 4185 4186 4187 4188 4189 4190 |
static bool floppy_available(int drive) { if (!(allowed_drive_mask & (1 << drive))) return false; if (fdc_state[FDC(drive)].version == FDC_NONE) return false; return true; } |
1da177e4c Linux-2.6.12-rc2 |
4191 4192 4193 |
static struct kobject *floppy_find(dev_t dev, int *part, void *data) { int drive = (*part & 3) | ((*part & 0x80) >> 5); |
8d3ab4ebf floppy: use commo... |
4194 |
if (drive >= N_DRIVE || !floppy_available(drive)) |
1da177e4c Linux-2.6.12-rc2 |
4195 |
return NULL; |
945f390f0 [PATCH] drivers/b... |
4196 |
if (((*part >> 2) & 0x1f) >= ARRAY_SIZE(floppy_type)) |
1da177e4c Linux-2.6.12-rc2 |
4197 4198 4199 4200 |
return NULL; *part = 0; return get_disk(disks[drive]); } |
0cc15d03b floppy: Run flopp... |
4201 |
static int __init do_floppy_init(void) |
1da177e4c Linux-2.6.12-rc2 |
4202 |
{ |
1a4ae43e4 floppy: remove dr... |
4203 |
int i, unit, drive, err; |
1da177e4c Linux-2.6.12-rc2 |
4204 |
|
285203c8f floppy: initializ... |
4205 4206 |
set_debugt(); interruptjiffies = resultjiffies = jiffies; |
68e1ee62f powerpc: convert ... |
4207 |
#if defined(CONFIG_PPC) |
ef16b5194 [PATCH] exit earl... |
4208 4209 4210 |
if (check_legacy_ioport(FDC1)) return -ENODEV; #endif |
1da177e4c Linux-2.6.12-rc2 |
4211 |
raw_cmd = NULL; |
b54e1f888 floppy: don't cal... |
4212 4213 4214 |
floppy_wq = alloc_ordered_workqueue("floppy", 0); if (!floppy_wq) return -ENOMEM; |
1a4ae43e4 floppy: remove dr... |
4215 4216 4217 |
for (drive = 0; drive < N_DRIVE; drive++) { disks[drive] = alloc_disk(1); if (!disks[drive]) { |
1da177e4c Linux-2.6.12-rc2 |
4218 4219 4220 |
err = -ENOMEM; goto out_put_disk; } |
1a4ae43e4 floppy: remove dr... |
4221 4222 |
disks[drive]->queue = blk_init_queue(do_fd_request, &floppy_lock); if (!disks[drive]->queue) { |
488211844 floppy: switch to... |
4223 |
err = -ENOMEM; |
b54e1f888 floppy: don't cal... |
4224 |
goto out_put_disk; |
488211844 floppy: switch to... |
4225 |
} |
1a4ae43e4 floppy: remove dr... |
4226 4227 4228 4229 4230 |
blk_queue_max_hw_sectors(disks[drive]->queue, 64); disks[drive]->major = FLOPPY_MAJOR; disks[drive]->first_minor = TOMINOR(drive); disks[drive]->fops = &floppy_fops; sprintf(disks[drive]->disk_name, "fd%d", drive); |
1da177e4c Linux-2.6.12-rc2 |
4231 |
|
68219bdf5 block: floppy: us... |
4232 |
setup_timer(&motor_off_timer[drive], motor_off_callback, drive); |
1da177e4c Linux-2.6.12-rc2 |
4233 |
} |
1da177e4c Linux-2.6.12-rc2 |
4234 4235 |
err = register_blkdev(FLOPPY_MAJOR, "fd"); if (err) |
8ab5e4c15 [PATCH] devfs: Re... |
4236 |
goto out_put_disk; |
1da177e4c Linux-2.6.12-rc2 |
4237 |
|
5e50b9ef9 floppy: fix hiber... |
4238 4239 4240 |
err = platform_driver_register(&floppy_driver); if (err) goto out_unreg_blkdev; |
1da177e4c Linux-2.6.12-rc2 |
4241 4242 4243 4244 4245 4246 4247 4248 |
blk_register_region(MKDEV(FLOPPY_MAJOR, 0), 256, THIS_MODULE, floppy_find, NULL, NULL); for (i = 0; i < 256; i++) if (ITYPE(i)) floppy_sizes[i] = floppy_type[ITYPE(i)].size; else floppy_sizes[i] = MAX_DISK_SIZE << 1; |
73507e6cd drivers/block/flo... |
4249 |
reschedule_timeout(MAXTIMEOUT, "floppy init"); |
1da177e4c Linux-2.6.12-rc2 |
4250 4251 4252 4253 |
config_types(); for (i = 0; i < N_FDC; i++) { fdc = i; |
b87c9e0a8 drivers/block/flo... |
4254 |
memset(FDCS, 0, sizeof(*FDCS)); |
1da177e4c Linux-2.6.12-rc2 |
4255 4256 4257 |
FDCS->dtr = -1; FDCS->dor = 0x4; #if defined(__sparc__) || defined(__mc68000__) |
96534f1dd drivers/block/flo... |
4258 |
/*sparcs/sun3x don't have a DOR reset which we can fall back on to */ |
1da177e4c Linux-2.6.12-rc2 |
4259 4260 4261 4262 4263 4264 4265 4266 |
#ifdef __mc68000__ if (MACH_IS_SUN3X) #endif FDCS->version = FDC_82072A; #endif } use_virtual_dma = can_use_virtual_dma & 1; |
1da177e4c Linux-2.6.12-rc2 |
4267 4268 |
fdc_state[0].address = FDC1; if (fdc_state[0].address == -1) { |
070ad7e79 floppy: convert t... |
4269 |
cancel_delayed_work(&fd_timeout); |
1da177e4c Linux-2.6.12-rc2 |
4270 4271 4272 4273 4274 4275 4276 4277 4278 4279 |
err = -ENODEV; goto out_unreg_region; } #if N_FDC > 1 fdc_state[1].address = FDC2; #endif fdc = 0; /* reset fdc in case of unexpected interrupt */ err = floppy_grab_irq_and_dma(); if (err) { |
070ad7e79 floppy: convert t... |
4280 |
cancel_delayed_work(&fd_timeout); |
1da177e4c Linux-2.6.12-rc2 |
4281 4282 4283 4284 4285 4286 |
err = -EBUSY; goto out_unreg_region; } /* initialise drive state */ for (drive = 0; drive < N_DRIVE; drive++) { |
b87c9e0a8 drivers/block/flo... |
4287 4288 |
memset(UDRS, 0, sizeof(*UDRS)); memset(UDRWE, 0, sizeof(*UDRWE)); |
e02985361 drivers/block/flo... |
4289 4290 4291 |
set_bit(FD_DISK_NEWCHANGE_BIT, &UDRS->flags); set_bit(FD_DISK_CHANGED_BIT, &UDRS->flags); set_bit(FD_VERIFY_BIT, &UDRS->flags); |
1da177e4c Linux-2.6.12-rc2 |
4292 4293 4294 4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307 4308 4309 4310 |
UDRS->fd_device = -1; floppy_track_buffer = NULL; max_buffer_sectors = 0; } /* * Small 10 msec delay to let through any interrupt that * initialization might have triggered, to not * confuse detection: */ msleep(10); for (i = 0; i < N_FDC; i++) { fdc = i; FDCS->driver_version = FD_DRIVER_VERSION; for (unit = 0; unit < 4; unit++) FDCS->track[unit] = 0; if (FDCS->address == -1) continue; FDCS->rawcmd = 2; |
74f63f469 drivers/block/flo... |
4311 |
if (user_reset_fdc(-1, FD_RESET_ALWAYS, false)) { |
1da177e4c Linux-2.6.12-rc2 |
4312 |
/* free ioports reserved by floppy_grab_irq_and_dma() */ |
5a74db06c floppy: request a... |
4313 |
floppy_release_regions(fdc); |
1da177e4c Linux-2.6.12-rc2 |
4314 4315 4316 4317 4318 4319 4320 4321 |
FDCS->address = -1; FDCS->version = FDC_NONE; continue; } /* Try to determine the floppy controller type */ FDCS->version = get_fdc_version(); if (FDCS->version == FDC_NONE) { /* free ioports reserved by floppy_grab_irq_and_dma() */ |
5a74db06c floppy: request a... |
4322 |
floppy_release_regions(fdc); |
1da177e4c Linux-2.6.12-rc2 |
4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 |
FDCS->address = -1; continue; } if (can_use_virtual_dma == 2 && FDCS->version < FDC_82072A) can_use_virtual_dma = 0; have_no_fdc = 0; /* Not all FDCs seem to be able to handle the version command * properly, so force a reset for the standard FDC clones, * to avoid interrupt garbage. */ |
74f63f469 drivers/block/flo... |
4334 |
user_reset_fdc(-1, FD_RESET_ALWAYS, false); |
1da177e4c Linux-2.6.12-rc2 |
4335 4336 |
} fdc = 0; |
070ad7e79 floppy: convert t... |
4337 |
cancel_delayed_work(&fd_timeout); |
1da177e4c Linux-2.6.12-rc2 |
4338 |
current_drive = 0; |
29f1c7848 drivers/block/flo... |
4339 |
initialized = true; |
1da177e4c Linux-2.6.12-rc2 |
4340 4341 4342 4343 |
if (have_no_fdc) { DPRINT("no floppy controllers found "); err = have_no_fdc; |
070ad7e79 floppy: convert t... |
4344 |
goto out_release_dma; |
1da177e4c Linux-2.6.12-rc2 |
4345 |
} |
1da177e4c Linux-2.6.12-rc2 |
4346 |
for (drive = 0; drive < N_DRIVE; drive++) { |
8d3ab4ebf floppy: use commo... |
4347 |
if (!floppy_available(drive)) |
1da177e4c Linux-2.6.12-rc2 |
4348 |
continue; |
94fd0db7b [PATCH] Floppy: A... |
4349 4350 4351 4352 |
floppy_device[drive].name = floppy_device_name; floppy_device[drive].id = drive; floppy_device[drive].dev.release = floppy_device_release; |
b7f120b21 floppy: Avoid man... |
4353 |
floppy_device[drive].dev.groups = floppy_dev_groups; |
94fd0db7b [PATCH] Floppy: A... |
4354 4355 4356 |
err = platform_device_register(&floppy_device[drive]); if (err) |
d60e7ec18 floppy: properly ... |
4357 |
goto out_remove_drives; |
94fd0db7b [PATCH] Floppy: A... |
4358 |
|
1da177e4c Linux-2.6.12-rc2 |
4359 4360 |
/* to be cleaned up... */ disks[drive]->private_data = (void *)(long)drive; |
1da177e4c Linux-2.6.12-rc2 |
4361 |
disks[drive]->flags |= GENHD_FL_REMOVABLE; |
0d52c756a block: convert to... |
4362 |
device_add_disk(&floppy_device[drive].dev, disks[drive]); |
1da177e4c Linux-2.6.12-rc2 |
4363 4364 4365 |
} return 0; |
d60e7ec18 floppy: properly ... |
4366 4367 |
out_remove_drives: while (drive--) { |
8d3ab4ebf floppy: use commo... |
4368 |
if (floppy_available(drive)) { |
d60e7ec18 floppy: properly ... |
4369 |
del_gendisk(disks[drive]); |
d60e7ec18 floppy: properly ... |
4370 4371 4372 |
platform_device_unregister(&floppy_device[drive]); } } |
070ad7e79 floppy: convert t... |
4373 |
out_release_dma: |
575cfc673 floppy: use atomi... |
4374 |
if (atomic_read(&usage_count)) |
1da177e4c Linux-2.6.12-rc2 |
4375 4376 4377 |
floppy_release_irq_and_dma(); out_unreg_region: blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256); |
5e50b9ef9 floppy: fix hiber... |
4378 |
platform_driver_unregister(&floppy_driver); |
1da177e4c Linux-2.6.12-rc2 |
4379 4380 |
out_unreg_blkdev: unregister_blkdev(FLOPPY_MAJOR, "fd"); |
1da177e4c Linux-2.6.12-rc2 |
4381 |
out_put_disk: |
eac7cc52c floppy: destroy f... |
4382 |
destroy_workqueue(floppy_wq); |
1a4ae43e4 floppy: remove dr... |
4383 4384 4385 4386 4387 4388 4389 |
for (drive = 0; drive < N_DRIVE; drive++) { if (!disks[drive]) break; if (disks[drive]->queue) { del_timer_sync(&motor_off_timer[drive]); blk_cleanup_queue(disks[drive]->queue); disks[drive]->queue = NULL; |
3f9a5aabd floppy: Cleanup d... |
4390 |
} |
1a4ae43e4 floppy: remove dr... |
4391 |
put_disk(disks[drive]); |
1da177e4c Linux-2.6.12-rc2 |
4392 4393 4394 |
} return err; } |
0cc15d03b floppy: Run flopp... |
4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 |
#ifndef MODULE static __init void floppy_async_init(void *data, async_cookie_t cookie) { do_floppy_init(); } #endif static int __init floppy_init(void) { #ifdef MODULE return do_floppy_init(); #else /* Don't hold up the bootup by the floppy initialization */ async_schedule(floppy_async_init, NULL); return 0; #endif } |
5a74db06c floppy: request a... |
4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 |
static const struct io_region { int offset; int size; } io_regions[] = { { 2, 1 }, /* address + 3 is sometimes reserved by pnp bios for motherboard */ { 4, 2 }, /* address + 6 is reserved, and may be taken by IDE. * Unfortunately, Adaptec doesn't know this :-(, */ { 7, 1 }, }; static void floppy_release_allocated_regions(int fdc, const struct io_region *p) { while (p != io_regions) { p--; release_region(FDCS->address + p->offset, p->size); } } #define ARRAY_END(X) (&((X)[ARRAY_SIZE(X)])) static int floppy_request_regions(int fdc) { const struct io_region *p; for (p = io_regions; p < ARRAY_END(io_regions); p++) { |
bb57f0c66 drivers/block/flo... |
4439 4440 4441 4442 4443 |
if (!request_region(FDCS->address + p->offset, p->size, "floppy")) { DPRINT("Floppy io-port 0x%04lx in use ", FDCS->address + p->offset); |
5a74db06c floppy: request a... |
4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 |
floppy_release_allocated_regions(fdc, p); return -EBUSY; } } return 0; } static void floppy_release_regions(int fdc) { floppy_release_allocated_regions(fdc, ARRAY_END(io_regions)); } |
1da177e4c Linux-2.6.12-rc2 |
4455 4456 |
static int floppy_grab_irq_and_dma(void) { |
575cfc673 floppy: use atomi... |
4457 |
if (atomic_inc_return(&usage_count) > 1) |
1da177e4c Linux-2.6.12-rc2 |
4458 |
return 0; |
6dc659d81 [PATCH] drivers/b... |
4459 4460 4461 4462 4463 |
/* * We might have scheduled a free_irq(), wait it to * drain first: */ |
070ad7e79 floppy: convert t... |
4464 |
flush_workqueue(floppy_wq); |
6dc659d81 [PATCH] drivers/b... |
4465 |
|
1da177e4c Linux-2.6.12-rc2 |
4466 4467 4468 4469 |
if (fd_request_irq()) { DPRINT("Unable to grab IRQ%d for the floppy driver ", FLOPPY_IRQ); |
575cfc673 floppy: use atomi... |
4470 |
atomic_dec(&usage_count); |
1da177e4c Linux-2.6.12-rc2 |
4471 4472 4473 4474 4475 4476 |
return -1; } if (fd_request_dma()) { DPRINT("Unable to grab DMA%d for the floppy driver ", FLOPPY_DMA); |
2e9c47cd4 floppy: tolerate ... |
4477 4478 4479 4480 |
if (can_use_virtual_dma & 2) use_virtual_dma = can_use_virtual_dma = 1; if (!(can_use_virtual_dma & 1)) { fd_free_irq(); |
575cfc673 floppy: use atomi... |
4481 |
atomic_dec(&usage_count); |
2e9c47cd4 floppy: tolerate ... |
4482 4483 |
return -1; } |
1da177e4c Linux-2.6.12-rc2 |
4484 4485 4486 4487 |
} for (fdc = 0; fdc < N_FDC; fdc++) { if (FDCS->address != -1) { |
5a74db06c floppy: request a... |
4488 4489 |
if (floppy_request_regions(fdc)) goto cleanup; |
1da177e4c Linux-2.6.12-rc2 |
4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 |
} } for (fdc = 0; fdc < N_FDC; fdc++) { if (FDCS->address != -1) { reset_fdc_info(1); fd_outb(FDCS->dor, FD_DOR); } } fdc = 0; set_dor(0, ~0, 8); /* avoid immediate interrupt */ for (fdc = 0; fdc < N_FDC; fdc++) if (FDCS->address != -1) fd_outb(FDCS->dor, FD_DOR); /* |
06f748c47 floppy: do a very... |
4505 4506 |
* The driver will try and free resources and relies on us * to know if they were allocated or not. |
1da177e4c Linux-2.6.12-rc2 |
4507 4508 4509 4510 |
*/ fdc = 0; irqdma_allocated = 1; return 0; |
5a74db06c floppy: request a... |
4511 |
cleanup: |
1da177e4c Linux-2.6.12-rc2 |
4512 4513 |
fd_free_irq(); fd_free_dma(); |
5a74db06c floppy: request a... |
4514 4515 |
while (--fdc >= 0) floppy_release_regions(fdc); |
575cfc673 floppy: use atomi... |
4516 |
atomic_dec(&usage_count); |
1da177e4c Linux-2.6.12-rc2 |
4517 4518 4519 4520 4521 4522 |
return -1; } static void floppy_release_irq_and_dma(void) { int old_fdc; |
1da177e4c Linux-2.6.12-rc2 |
4523 4524 4525 |
#ifndef __sparc__ int drive; #endif |
1da177e4c Linux-2.6.12-rc2 |
4526 4527 |
long tmpsize; unsigned long tmpaddr; |
1da177e4c Linux-2.6.12-rc2 |
4528 |
|
575cfc673 floppy: use atomi... |
4529 |
if (!atomic_dec_and_test(&usage_count)) |
1da177e4c Linux-2.6.12-rc2 |
4530 |
return; |
575cfc673 floppy: use atomi... |
4531 |
|
1da177e4c Linux-2.6.12-rc2 |
4532 4533 4534 |
if (irqdma_allocated) { fd_disable_dma(); fd_free_dma(); |
3e541a4ae [PATCH] lockdep: ... |
4535 |
fd_free_irq(); |
1da177e4c Linux-2.6.12-rc2 |
4536 4537 4538 4539 4540 4541 |
irqdma_allocated = 0; } set_dor(0, ~0, 8); #if N_FDC > 1 set_dor(1, ~8, 0); #endif |
1da177e4c Linux-2.6.12-rc2 |
4542 4543 4544 4545 4546 4547 4548 4549 4550 |
if (floppy_track_buffer && max_buffer_sectors) { tmpsize = max_buffer_sectors * 1024; tmpaddr = (unsigned long)floppy_track_buffer; floppy_track_buffer = NULL; max_buffer_sectors = 0; buffer_min = buffer_max = -1; fd_dma_mem_free(tmpaddr, tmpsize); } |
1da177e4c Linux-2.6.12-rc2 |
4551 4552 4553 |
#ifndef __sparc__ for (drive = 0; drive < N_FDC * 4; drive++) if (timer_pending(motor_off_timer + drive)) |
b46df356d drivers/block/flo... |
4554 4555 |
pr_info("motor off timer %d still active ", drive); |
1da177e4c Linux-2.6.12-rc2 |
4556 |
#endif |
070ad7e79 floppy: convert t... |
4557 |
if (delayed_work_pending(&fd_timeout)) |
b46df356d drivers/block/flo... |
4558 4559 |
pr_info("floppy timer still active:%s ", timeout_message); |
070ad7e79 floppy: convert t... |
4560 |
if (delayed_work_pending(&fd_timer)) |
b46df356d drivers/block/flo... |
4561 4562 |
pr_info("auxiliary floppy timer still active "); |
365970a1e WorkStruct: Merge... |
4563 |
if (work_pending(&floppy_work)) |
b46df356d drivers/block/flo... |
4564 4565 |
pr_info("work still pending "); |
1da177e4c Linux-2.6.12-rc2 |
4566 4567 |
old_fdc = fdc; for (fdc = 0; fdc < N_FDC; fdc++) |
5a74db06c floppy: request a... |
4568 4569 |
if (FDCS->address != -1) floppy_release_regions(fdc); |
1da177e4c Linux-2.6.12-rc2 |
4570 4571 4572 4573 4574 4575 |
fdc = old_fdc; } #ifdef MODULE static char *floppy; |
1da177e4c Linux-2.6.12-rc2 |
4576 4577 4578 4579 4580 |
static void __init parse_floppy_cfg_string(char *cfg) { char *ptr; while (*cfg) { |
bb57f0c66 drivers/block/flo... |
4581 4582 4583 |
ptr = cfg; while (*cfg && *cfg != ' ' && *cfg != '\t') cfg++; |
1da177e4c Linux-2.6.12-rc2 |
4584 4585 4586 4587 4588 4589 4590 4591 |
if (*cfg) { *cfg = '\0'; cfg++; } if (*ptr) floppy_setup(ptr); } } |
7afea3bcb drivers/block/flo... |
4592 |
static int __init floppy_module_init(void) |
1da177e4c Linux-2.6.12-rc2 |
4593 4594 4595 4596 4597 |
{ if (floppy) parse_floppy_cfg_string(floppy); return floppy_init(); } |
7afea3bcb drivers/block/flo... |
4598 |
module_init(floppy_module_init); |
1da177e4c Linux-2.6.12-rc2 |
4599 |
|
7afea3bcb drivers/block/flo... |
4600 |
static void __exit floppy_module_exit(void) |
1da177e4c Linux-2.6.12-rc2 |
4601 4602 |
{ int drive; |
1da177e4c Linux-2.6.12-rc2 |
4603 4604 |
blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256); unregister_blkdev(FLOPPY_MAJOR, "fd"); |
5e50b9ef9 floppy: fix hiber... |
4605 |
platform_driver_unregister(&floppy_driver); |
1da177e4c Linux-2.6.12-rc2 |
4606 |
|
eac7cc52c floppy: destroy f... |
4607 |
destroy_workqueue(floppy_wq); |
1da177e4c Linux-2.6.12-rc2 |
4608 4609 |
for (drive = 0; drive < N_DRIVE; drive++) { del_timer_sync(&motor_off_timer[drive]); |
8d3ab4ebf floppy: use commo... |
4610 |
if (floppy_available(drive)) { |
1da177e4c Linux-2.6.12-rc2 |
4611 |
del_gendisk(disks[drive]); |
94fd0db7b [PATCH] Floppy: A... |
4612 |
platform_device_unregister(&floppy_device[drive]); |
1da177e4c Linux-2.6.12-rc2 |
4613 |
} |
488211844 floppy: switch to... |
4614 |
blk_cleanup_queue(disks[drive]->queue); |
4609dff6b floppy: Fix a cra... |
4615 4616 4617 4618 4619 4620 4621 4622 |
/* * These disks have not called add_disk(). Don't put down * queue reference in put_disk(). */ if (!(allowed_drive_mask & (1 << drive)) || fdc_state[FDC(drive)].version == FDC_NONE) disks[drive]->queue = NULL; |
d017bf6b4 floppy: fix anoth... |
4623 |
put_disk(disks[drive]); |
1da177e4c Linux-2.6.12-rc2 |
4624 |
} |
1da177e4c Linux-2.6.12-rc2 |
4625 |
|
070ad7e79 floppy: convert t... |
4626 4627 |
cancel_delayed_work_sync(&fd_timeout); cancel_delayed_work_sync(&fd_timer); |
1da177e4c Linux-2.6.12-rc2 |
4628 |
|
575cfc673 floppy: use atomi... |
4629 |
if (atomic_read(&usage_count)) |
1da177e4c Linux-2.6.12-rc2 |
4630 4631 4632 4633 |
floppy_release_irq_and_dma(); /* eject disk, if any */ fd_eject(0); |
1da177e4c Linux-2.6.12-rc2 |
4634 |
} |
48c8cee61 drivers/block/flo... |
4635 |
|
7afea3bcb drivers/block/flo... |
4636 |
module_exit(floppy_module_exit); |
1da177e4c Linux-2.6.12-rc2 |
4637 4638 4639 4640 4641 4642 4643 |
module_param(floppy, charp, 0); module_param(FLOPPY_IRQ, int, 0); module_param(FLOPPY_DMA, int, 0); MODULE_AUTHOR("Alain L. Knaff"); MODULE_SUPPORTED_DEVICE("fd"); MODULE_LICENSE("GPL"); |
83f9ef463 floppy: provide a... |
4644 4645 |
/* This doesn't actually get used other than for module information */ static const struct pnp_device_id floppy_pnpids[] = { |
48c8cee61 drivers/block/flo... |
4646 4647 |
{"PNP0700", 0}, {} |
83f9ef463 floppy: provide a... |
4648 |
}; |
48c8cee61 drivers/block/flo... |
4649 |
|
83f9ef463 floppy: provide a... |
4650 |
MODULE_DEVICE_TABLE(pnp, floppy_pnpids); |
1da177e4c Linux-2.6.12-rc2 |
4651 4652 4653 4654 4655 4656 4657 |
#else __setup("floppy=", floppy_setup); module_init(floppy_init) #endif MODULE_ALIAS_BLOCKDEV_MAJOR(FLOPPY_MAJOR); |