/*
|
/*
|
* linux/arch/arm/drivers/block/floppy.c
|
* linux/arch/arm/drivers/block/floppy.c
|
* [ was linux/drivers/block/floppy.c ]
|
* [ was linux/drivers/block/floppy.c ]
|
*
|
*
|
* Copyright (C) 1991, 1992 Linus Torvalds
|
* Copyright (C) 1991, 1992 Linus Torvalds
|
* Copyright (C) 1993, 1994 Alain Knaff
|
* Copyright (C) 1993, 1994 Alain Knaff
|
* Modifications Copyright (C) 1995 Russell King
|
* Modifications Copyright (C) 1995 Russell King
|
*/
|
*/
|
/*
|
/*
|
* 02.12.91 - Changed to static variables to indicate need for reset
|
* 02.12.91 - Changed to static variables to indicate need for reset
|
* and recalibrate. This makes some things easier (output_byte reset
|
* and recalibrate. This makes some things easier (output_byte reset
|
* checking etc), and means less interrupt jumping in case of errors,
|
* checking etc), and means less interrupt jumping in case of errors,
|
* so the code is hopefully easier to understand.
|
* so the code is hopefully easier to understand.
|
*/
|
*/
|
|
|
/*
|
/*
|
* This file is certainly a mess. I've tried my best to get it working,
|
* 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.
|
* 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
|
* Urgel. I should check for more errors, and do more graceful error
|
* recovery. Seems there are problems with several drives. I've tried to
|
* recovery. Seems there are problems with several drives. I've tried to
|
* correct them. No promises.
|
* correct them. No promises.
|
*/
|
*/
|
|
|
/*
|
/*
|
* As with hd.c, all routines within this file can (and will) be called
|
* As with hd.c, all routines within this file can (and will) be called
|
* by interrupts, so extreme caution is needed. A hardware interrupt
|
* by interrupts, so extreme caution is needed. A hardware interrupt
|
* handler may not sleep, or a kernel panic will happen. Thus I cannot
|
* 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
|
* call "floppy-on" directly, but have to set a special timer interrupt
|
* etc.
|
* etc.
|
*/
|
*/
|
|
|
/*
|
/*
|
* 28.02.92 - made track-buffering routines, based on the routines written
|
* 28.02.92 - made track-buffering routines, based on the routines written
|
* by entropy@wintermute.wpi.edu (Lawrence Foard). Linus.
|
* by entropy@wintermute.wpi.edu (Lawrence Foard). Linus.
|
*/
|
*/
|
|
|
/*
|
/*
|
* Automatic floppy-detection and formatting written by Werner Almesberger
|
* Automatic floppy-detection and formatting written by Werner Almesberger
|
* (almesber@nessie.cs.id.ethz.ch), who also corrected some problems with
|
* (almesber@nessie.cs.id.ethz.ch), who also corrected some problems with
|
* the floppy-change signal detection.
|
* the floppy-change signal detection.
|
*/
|
*/
|
|
|
/*
|
/*
|
* 1992/7/22 -- Hennus Bergman: Added better error reporting, fixed
|
* 1992/7/22 -- Hennus Bergman: Added better error reporting, fixed
|
* FDC data overrun bug, added some preliminary stuff for vertical
|
* FDC data overrun bug, added some preliminary stuff for vertical
|
* recording support.
|
* recording support.
|
*
|
*
|
* 1992/9/17: Added DMA allocation & DMA functions. -- hhb.
|
* 1992/9/17: Added DMA allocation & DMA functions. -- hhb.
|
*
|
*
|
* TODO: Errors are still not counted properly.
|
* TODO: Errors are still not counted properly.
|
*/
|
*/
|
|
|
/* 1992/9/20
|
/* 1992/9/20
|
* Modifications for ``Sector Shifting'' by Rob Hooft (hooft@chem.ruu.nl)
|
* Modifications for ``Sector Shifting'' by Rob Hooft (hooft@chem.ruu.nl)
|
* modeled after the freeware MS-DOS program fdformat/88 V1.8 by
|
* modeled after the freeware MS-DOS program fdformat/88 V1.8 by
|
* Christoph H. Hochst\"atter.
|
* Christoph H. Hochst\"atter.
|
* I have fixed the shift values to the ones I always use. Maybe a new
|
* 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.
|
* ioctl() should be created to be able to modify them.
|
* There is a bug in the driver that makes it impossible to format a
|
* There is a bug in the driver that makes it impossible to format a
|
* floppy as the first thing after bootup.
|
* floppy as the first thing after bootup.
|
*/
|
*/
|
|
|
/*
|
/*
|
* 1993/4/29 -- Linus -- cleaned up the timer handling in the kernel, and
|
* 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
|
* this helped the floppy driver as well. Much cleaner, and still seems to
|
* work.
|
* work.
|
*/
|
*/
|
|
|
/* 1994/6/24 --bbroad-- added the floppy table entries and made
|
/* 1994/6/24 --bbroad-- added the floppy table entries and made
|
* minor modifications to allow 2.88 floppies to be run.
|
* minor modifications to allow 2.88 floppies to be run.
|
*/
|
*/
|
|
|
/* 1994/7/13 -- Paul Vojta -- modified the probing code to allow three or more
|
/* 1994/7/13 -- Paul Vojta -- modified the probing code to allow three or more
|
* disk types.
|
* disk types.
|
*/
|
*/
|
|
|
/*
|
/*
|
* 1994/8/8 -- Alain Knaff -- Switched to fdpatch driver: Support for bigger
|
* 1994/8/8 -- Alain Knaff -- Switched to fdpatch driver: Support for bigger
|
* format bug fixes, but unfortunately some new bugs too...
|
* format bug fixes, but unfortunately some new bugs too...
|
*/
|
*/
|
|
|
/* 1994/9/17 -- Koen Holtman -- added logging of physical floppy write
|
/* 1994/9/17 -- Koen Holtman -- added logging of physical floppy write
|
* errors to allow safe writing by specialized programs.
|
* errors to allow safe writing by specialized programs.
|
*/
|
*/
|
|
|
/* 1995/4/24 -- Dan Fandrich -- added support for Commodore 1581 3.5" disks
|
/* 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
|
* 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
|
* opposite side of the disk, leaving the sector IDs alone (i.e. Commodore's
|
* drives are "upside-down").
|
* drives are "upside-down").
|
*/
|
*/
|
|
|
/*
|
/*
|
* 1995/8/26 -- Andreas Busse -- added Mips support.
|
* 1995/8/26 -- Andreas Busse -- added Mips support.
|
*/
|
*/
|
|
|
/*
|
/*
|
* 1995/8/16 -- Russell King -- added ARM support.
|
* 1995/8/16 -- Russell King -- added ARM support.
|
*/
|
*/
|
|
|
/*
|
/*
|
* 1995/10/18 -- Ralf Baechle -- Portability cleanup; move machine dependent
|
* 1995/10/18 -- Ralf Baechle -- Portability cleanup; move machine dependent
|
* features to asm/floppy.h.
|
* features to asm/floppy.h.
|
*/
|
*/
|
|
|
|
|
#define FLOPPY_SANITY_CHECK
|
#define FLOPPY_SANITY_CHECK
|
#undef FLOPPY_SILENT_DCL_CLEAR
|
#undef FLOPPY_SILENT_DCL_CLEAR
|
|
|
#define REALLY_SLOW_IO
|
#define REALLY_SLOW_IO
|
|
|
#define DEBUGT 2
|
#define DEBUGT 2
|
#define DCL_DEBUG /* debug disk change line */
|
#define DCL_DEBUG /* debug disk change line */
|
|
|
/* do print messages for unexpected interrupts */
|
/* do print messages for unexpected interrupts */
|
static int print_unex=1;
|
static int print_unex=1;
|
#include <linux/utsname.h>
|
#include <linux/utsname.h>
|
#include <linux/module.h>
|
#include <linux/module.h>
|
#include <linux/sched.h>
|
#include <linux/sched.h>
|
#include <linux/fs.h>
|
#include <linux/fs.h>
|
#include <linux/kernel.h>
|
#include <linux/kernel.h>
|
#include <linux/timer.h>
|
#include <linux/timer.h>
|
#include <linux/tqueue.h>
|
#include <linux/tqueue.h>
|
#define FDPATCHES
|
#define FDPATCHES
|
#include <linux/fdreg.h>
|
#include <linux/fdreg.h>
|
#include <linux/fd.h>
|
#include <linux/fd.h>
|
|
|
#define OLDFDRAWCMD 0x020d /* send a raw command to the FDC */
|
#define OLDFDRAWCMD 0x020d /* send a raw command to the FDC */
|
|
|
struct old_floppy_raw_cmd {
|
struct old_floppy_raw_cmd {
|
void *data;
|
void *data;
|
long length;
|
long length;
|
|
|
unsigned char rate;
|
unsigned char rate;
|
unsigned char flags;
|
unsigned char flags;
|
unsigned char cmd_count;
|
unsigned char cmd_count;
|
unsigned char cmd[9];
|
unsigned char cmd[9];
|
unsigned char reply_count;
|
unsigned char reply_count;
|
unsigned char reply[7];
|
unsigned char reply[7];
|
int track;
|
int track;
|
};
|
};
|
|
|
#include <linux/errno.h>
|
#include <linux/errno.h>
|
#include <linux/malloc.h>
|
#include <linux/malloc.h>
|
#include <linux/mm.h>
|
#include <linux/mm.h>
|
#include <linux/string.h>
|
#include <linux/string.h>
|
#include <linux/fcntl.h>
|
#include <linux/fcntl.h>
|
#include <linux/delay.h>
|
#include <linux/delay.h>
|
#ifndef CONFIG_ARM
|
#ifndef CONFIG_ARM
|
#include <linux/mc146818rtc.h> /* CMOS defines */
|
#include <linux/mc146818rtc.h> /* CMOS defines */
|
#endif
|
#endif
|
#include <linux/ioport.h>
|
#include <linux/ioport.h>
|
#include <linux/interrupt.h>
|
#include <linux/interrupt.h>
|
|
|
#include <asm/dma.h>
|
#include <asm/dma.h>
|
#include <asm/irq.h>
|
#include <asm/irq.h>
|
#include <asm/system.h>
|
#include <asm/system.h>
|
#include <asm/io.h>
|
#include <asm/io.h>
|
#include <asm/segment.h>
|
#include <asm/segment.h>
|
|
|
/* the following is the mask of allowed drives. By default units 2 and
|
/* the following is the mask of allowed drives. By default units 2 and
|
* 3 of both floppy controllers are disabled, because switching on the
|
* 3 of both floppy controllers are disabled, because switching on the
|
* motor of these drives causes system hangs on some PCI computers. drive
|
* 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
|
* 0 is the low bit (0x1), and drive 7 is the high bit (0x80). Bits are on if
|
* a drive is allowed. */
|
* a drive is allowed. */
|
static int FLOPPY_IRQ=IRQ_FLOPPYDISK;
|
static int FLOPPY_IRQ=IRQ_FLOPPYDISK;
|
static int FLOPPY_DMA=DMA_FLOPPY;
|
static int FLOPPY_DMA=DMA_FLOPPY;
|
static int allowed_drive_mask = 0x33;
|
static int allowed_drive_mask = 0x33;
|
|
|
static int use_virtual_dma=0; /* virtual DMA for Intel */
|
static int use_virtual_dma=0; /* virtual DMA for Intel */
|
static unsigned short virtual_dma_port=0x3f0;
|
static unsigned short virtual_dma_port=0x3f0;
|
void floppy_interrupt(int irq, void *dev_id, struct pt_regs * regs);
|
void floppy_interrupt(int irq, void *dev_id, struct pt_regs * regs);
|
static int set_dor(int fdc, char mask, char data);
|
static int set_dor(int fdc, char mask, char data);
|
static inline int __get_order(unsigned long size);
|
static inline int __get_order(unsigned long size);
|
#include <asm/floppy.h>
|
#include <asm/floppy.h>
|
|
|
|
|
#define MAJOR_NR FLOPPY_MAJOR
|
#define MAJOR_NR FLOPPY_MAJOR
|
|
|
#include <linux/blk.h>
|
#include <linux/blk.h>
|
#include <linux/cdrom.h> /* for the compatibility eject ioctl */
|
#include <linux/cdrom.h> /* for the compatibility eject ioctl */
|
|
|
|
|
#ifndef FLOPPY_MOTOR_MASK
|
#ifndef FLOPPY_MOTOR_MASK
|
#define FLOPPY_MOTOR_MASK 0xf0
|
#define FLOPPY_MOTOR_MASK 0xf0
|
#endif
|
#endif
|
|
|
#ifndef fd_get_dma_residue
|
#ifndef fd_get_dma_residue
|
#define fd_get_dma_residue() get_dma_residue(FLOPPY_DMA)
|
#define fd_get_dma_residue() get_dma_residue(FLOPPY_DMA)
|
#endif
|
#endif
|
|
|
/* Dma Memory related stuff */
|
/* Dma Memory related stuff */
|
|
|
/* Pure 2^n version of get_order */
|
/* Pure 2^n version of get_order */
|
static inline int __get_order(unsigned long size)
|
static inline int __get_order(unsigned long size)
|
{
|
{
|
int order;
|
int order;
|
|
|
size = (size-1) >> (PAGE_SHIFT-1);
|
size = (size-1) >> (PAGE_SHIFT-1);
|
order = -1;
|
order = -1;
|
do {
|
do {
|
size >>= 1;
|
size >>= 1;
|
order++;
|
order++;
|
} while (size);
|
} while (size);
|
return order;
|
return order;
|
}
|
}
|
|
|
#ifndef fd_dma_mem_free
|
#ifndef fd_dma_mem_free
|
#define fd_dma_mem_free(addr, size) free_pages(addr, __get_order(size))
|
#define fd_dma_mem_free(addr, size) free_pages(addr, __get_order(size))
|
#endif
|
#endif
|
|
|
#ifndef fd_dma_mem_alloc
|
#ifndef fd_dma_mem_alloc
|
#define fd_dma_mem_alloc(size) __get_dma_pages(GFP_KERNEL,__get_order(size))
|
#define fd_dma_mem_alloc(size) __get_dma_pages(GFP_KERNEL,__get_order(size))
|
#endif
|
#endif
|
|
|
/* End dma memory related stuff */
|
/* End dma memory related stuff */
|
|
|
static unsigned int fake_change = 0;
|
static unsigned int fake_change = 0;
|
static int initialising=1;
|
static int initialising=1;
|
|
|
static inline int TYPE(kdev_t x) {
|
static inline int TYPE(kdev_t x) {
|
return (MINOR(x)>>2) & 0x1f;
|
return (MINOR(x)>>2) & 0x1f;
|
}
|
}
|
static inline int DRIVE(kdev_t x) {
|
static inline int DRIVE(kdev_t x) {
|
return (MINOR(x)&0x03) | ((MINOR(x)&0x80) >> 5);
|
return (MINOR(x)&0x03) | ((MINOR(x)&0x80) >> 5);
|
}
|
}
|
#define ITYPE(x) (((x)>>2) & 0x1f)
|
#define ITYPE(x) (((x)>>2) & 0x1f)
|
#define TOMINOR(x) ((x & 3) | ((x & 4) << 5))
|
#define TOMINOR(x) ((x & 3) | ((x & 4) << 5))
|
#define UNIT(x) ((x) & 0x03) /* drive on fdc */
|
#define UNIT(x) ((x) & 0x03) /* drive on fdc */
|
#define FDC(x) (((x) & 0x04) >> 2) /* fdc of drive */
|
#define FDC(x) (((x) & 0x04) >> 2) /* fdc of drive */
|
#define REVDRIVE(fdc, unit) ((unit) + ((fdc) << 2))
|
#define REVDRIVE(fdc, unit) ((unit) + ((fdc) << 2))
|
/* reverse mapping from unit and fdc to drive */
|
/* reverse mapping from unit and fdc to drive */
|
#define DP (&drive_params[current_drive])
|
#define DP (&drive_params[current_drive])
|
#define DRS (&drive_state[current_drive])
|
#define DRS (&drive_state[current_drive])
|
#define DRWE (&write_errors[current_drive])
|
#define DRWE (&write_errors[current_drive])
|
#define FDCS (&fdc_state[fdc])
|
#define FDCS (&fdc_state[fdc])
|
#define CLEARF(x) (clear_bit(x##_BIT, &DRS->flags))
|
#define CLEARF(x) (clear_bit(x##_BIT, &DRS->flags))
|
#define SETF(x) (set_bit(x##_BIT, &DRS->flags))
|
#define SETF(x) (set_bit(x##_BIT, &DRS->flags))
|
#define TESTF(x) (test_bit(x##_BIT, &DRS->flags))
|
#define TESTF(x) (test_bit(x##_BIT, &DRS->flags))
|
|
|
#define UDP (&drive_params[drive])
|
#define UDP (&drive_params[drive])
|
#define UDRS (&drive_state[drive])
|
#define UDRS (&drive_state[drive])
|
#define UDRWE (&write_errors[drive])
|
#define UDRWE (&write_errors[drive])
|
#define UFDCS (&fdc_state[FDC(drive)])
|
#define UFDCS (&fdc_state[FDC(drive)])
|
#define UCLEARF(x) (clear_bit(x##_BIT, &UDRS->flags))
|
#define UCLEARF(x) (clear_bit(x##_BIT, &UDRS->flags))
|
#define USETF(x) (set_bit(x##_BIT, &UDRS->flags))
|
#define USETF(x) (set_bit(x##_BIT, &UDRS->flags))
|
#define UTESTF(x) (test_bit(x##_BIT, &UDRS->flags))
|
#define UTESTF(x) (test_bit(x##_BIT, &UDRS->flags))
|
|
|
#define DPRINT(format, args...) printk(DEVICE_NAME "%d: " format, current_drive , ## args)
|
#define DPRINT(format, args...) printk(DEVICE_NAME "%d: " format, current_drive , ## args)
|
|
|
#define PH_HEAD(floppy,head) (((((floppy)->stretch & 2) >>1) ^ head) << 2)
|
#define PH_HEAD(floppy,head) (((((floppy)->stretch & 2) >>1) ^ head) << 2)
|
#define STRETCH(floppy) ((floppy)->stretch & FD_STRETCH)
|
#define STRETCH(floppy) ((floppy)->stretch & FD_STRETCH)
|
|
|
#define CLEARSTRUCT(x) memset((x), 0, sizeof(*(x)))
|
#define CLEARSTRUCT(x) memset((x), 0, sizeof(*(x)))
|
|
|
#define INT_OFF save_flags(flags); cli()
|
#define INT_OFF save_flags(flags); cli()
|
#define INT_ON restore_flags(flags)
|
#define INT_ON restore_flags(flags)
|
|
|
/* read/write */
|
/* read/write */
|
#define COMMAND raw_cmd->cmd[0]
|
#define COMMAND raw_cmd->cmd[0]
|
#define DR_SELECT raw_cmd->cmd[1]
|
#define DR_SELECT raw_cmd->cmd[1]
|
#define TRACK raw_cmd->cmd[2]
|
#define TRACK raw_cmd->cmd[2]
|
#define HEAD raw_cmd->cmd[3]
|
#define HEAD raw_cmd->cmd[3]
|
#define SECTOR raw_cmd->cmd[4]
|
#define SECTOR raw_cmd->cmd[4]
|
#define SIZECODE raw_cmd->cmd[5]
|
#define SIZECODE raw_cmd->cmd[5]
|
#define SECT_PER_TRACK raw_cmd->cmd[6]
|
#define SECT_PER_TRACK raw_cmd->cmd[6]
|
#define GAP raw_cmd->cmd[7]
|
#define GAP raw_cmd->cmd[7]
|
#define SIZECODE2 raw_cmd->cmd[8]
|
#define SIZECODE2 raw_cmd->cmd[8]
|
#define NR_RW 9
|
#define NR_RW 9
|
|
|
/* format */
|
/* format */
|
#define F_SIZECODE raw_cmd->cmd[2]
|
#define F_SIZECODE raw_cmd->cmd[2]
|
#define F_SECT_PER_TRACK raw_cmd->cmd[3]
|
#define F_SECT_PER_TRACK raw_cmd->cmd[3]
|
#define F_GAP raw_cmd->cmd[4]
|
#define F_GAP raw_cmd->cmd[4]
|
#define F_FILL raw_cmd->cmd[5]
|
#define F_FILL raw_cmd->cmd[5]
|
#define NR_F 6
|
#define NR_F 6
|
|
|
/*
|
/*
|
* Maximum disk size (in kilobytes). This default is used whenever the
|
* Maximum disk size (in kilobytes). This default is used whenever the
|
* current disk size is unknown.
|
* current disk size is unknown.
|
* [Now it is rather a minimum]
|
* [Now it is rather a minimum]
|
*/
|
*/
|
#define MAX_DISK_SIZE 4 /* 3984*/
|
#define MAX_DISK_SIZE 4 /* 3984*/
|
|
|
#define K_64 0x10000 /* 64KB */
|
#define K_64 0x10000 /* 64KB */
|
|
|
/*
|
/*
|
* globals used by 'result()'
|
* globals used by 'result()'
|
*/
|
*/
|
#define MAX_REPLIES 16
|
#define MAX_REPLIES 16
|
static unsigned char reply_buffer[MAX_REPLIES];
|
static unsigned char reply_buffer[MAX_REPLIES];
|
static int inr; /* size of reply buffer, when called from interrupt */
|
static int inr; /* size of reply buffer, when called from interrupt */
|
#define ST0 (reply_buffer[0])
|
#define ST0 (reply_buffer[0])
|
#define ST1 (reply_buffer[1])
|
#define ST1 (reply_buffer[1])
|
#define ST2 (reply_buffer[2])
|
#define ST2 (reply_buffer[2])
|
#define ST3 (reply_buffer[0]) /* result of GETSTATUS */
|
#define ST3 (reply_buffer[0]) /* result of GETSTATUS */
|
#define R_TRACK (reply_buffer[3])
|
#define R_TRACK (reply_buffer[3])
|
#define R_HEAD (reply_buffer[4])
|
#define R_HEAD (reply_buffer[4])
|
#define R_SECTOR (reply_buffer[5])
|
#define R_SECTOR (reply_buffer[5])
|
#define R_SIZECODE (reply_buffer[6])
|
#define R_SIZECODE (reply_buffer[6])
|
|
|
#define SEL_DLY (2*HZ/100)
|
#define SEL_DLY (2*HZ/100)
|
|
|
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
|
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
|
/*
|
/*
|
* this struct defines the different floppy drive types.
|
* this struct defines the different floppy drive types.
|
*/
|
*/
|
static struct {
|
static struct {
|
struct floppy_drive_params params;
|
struct floppy_drive_params params;
|
const char *name; /* name printed while booting */
|
const char *name; /* name printed while booting */
|
} default_drive_params[]= {
|
} default_drive_params[]= {
|
/* NOTE: the time values in jiffies should be in msec!
|
/* NOTE: the time values in jiffies should be in msec!
|
CMOS drive type
|
CMOS drive type
|
| Maximum data rate supported by drive type
|
| Maximum data rate supported by drive type
|
| | Head load time, msec
|
| | Head load time, msec
|
| | | Head unload time, msec (not used)
|
| | | Head unload time, msec (not used)
|
| | | | Step rate interval, usec
|
| | | | Step rate interval, usec
|
| | | | | Time needed for spinup time (jiffies)
|
| | | | | Time needed for spinup time (jiffies)
|
| | | | | | Timeout for spinning down (jiffies)
|
| | | | | | Timeout for spinning down (jiffies)
|
| | | | | | | Spindown offset (where disk stops)
|
| | | | | | | Spindown offset (where disk stops)
|
| | | | | | | | Select delay
|
| | | | | | | | Select delay
|
| | | | | | | | | RPS
|
| | | | | | | | | RPS
|
| | | | | | | | | | Max number of tracks
|
| | | | | | | | | | Max number of tracks
|
| | | | | | | | | | | Interrupt timeout
|
| | | | | | | | | | | Interrupt timeout
|
| | | | | | | | | | | | Max nonintlv. sectors
|
| | | | | | | | | | | | Max nonintlv. sectors
|
| | | | | | | | | | | | | -Max Errors- flags */
|
| | | | | | | | | | | | | -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, 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" },
|
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,
|
{{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*/
|
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,
|
{{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, 6,23,10,20,11, 0}, 3*HZ/2, 2 }, "1.2M" }, /*5 1/4 HD AT*/
|
0, { 2, 5, 6,23,10,20,11, 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,
|
{{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*/
|
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,
|
{{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*/
|
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,
|
{{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*/
|
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,
|
{{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*/
|
0, { 7, 8, 4,25,28,22,31,21}, 3*HZ/2, 8 }, "2.88M" } /*3 1/2 ED*/
|
/* | --autodetected formats--- | | |
|
/* | --autodetected formats--- | | |
|
* read_track | | Name printed when booting
|
* read_track | | Name printed when booting
|
* | Native format
|
* | Native format
|
* Frequency of disk change checks */
|
* Frequency of disk change checks */
|
};
|
};
|
|
|
static struct floppy_drive_params drive_params[N_DRIVE];
|
static struct floppy_drive_params drive_params[N_DRIVE];
|
static struct floppy_drive_struct drive_state[N_DRIVE];
|
static struct floppy_drive_struct drive_state[N_DRIVE];
|
static struct floppy_write_errors write_errors[N_DRIVE];
|
static struct floppy_write_errors write_errors[N_DRIVE];
|
static struct floppy_raw_cmd *raw_cmd, default_raw_cmd;
|
static struct floppy_raw_cmd *raw_cmd, default_raw_cmd;
|
|
|
/*
|
/*
|
* This struct defines the different floppy types.
|
* This struct defines the different floppy types.
|
*
|
*
|
* Bit 0 of 'stretch' tells if the tracks need to be doubled for some
|
* 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'
|
* 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
|
* 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.
|
* 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
|
* 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
|
* 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).
|
* side 0 is on physical side 0 (but with the misnamed sector IDs).
|
* 'stretch' should probably be renamed to something more general, like
|
* 'stretch' should probably be renamed to something more general, like
|
* 'options'. Other parameters should be self-explanatory (see also
|
* 'options'. Other parameters should be self-explanatory (see also
|
* setfdprm(8)).
|
* setfdprm(8)).
|
*/
|
*/
|
/*
|
/*
|
Size
|
Size
|
| Sectors per track
|
| Sectors per track
|
| | Head
|
| | Head
|
| | | Tracks
|
| | | Tracks
|
| | | | Stretch
|
| | | | Stretch
|
| | | | | Gap 1 size
|
| | | | | Gap 1 size
|
| | | | | | Data rate, | 0x40 for perp
|
| | | | | | Data rate, | 0x40 for perp
|
| | | | | | | Spec1 (stepping rate, head unload
|
| | | | | | | Spec1 (stepping rate, head unload
|
| | | | | | | | /fmt gap (gap2) */
|
| | | | | | | | /fmt gap (gap2) */
|
static struct floppy_struct floppy_type[32] = {
|
static struct floppy_struct floppy_type[32] = {
|
{ 0, 0,0, 0,0,0x00,0x00,0x00,0x00,NULL }, /* 0 no testing */
|
{ 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 */
|
{ 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 */
|
{ 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" */
|
{ 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" */
|
{ 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 */
|
{ 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 */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 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" */
|
{ 7680,48,2,80,0,0x25,0x63,0xCF,0x00,"E3840" }, /* 28 3.84MB 3.5" */
|
|
|
{ 3680,23,2,80,0,0x1C,0x10,0xCF,0x00,"H1840" }, /* 29 1.84MB 3.5" */
|
{ 3680,23,2,80,0,0x1C,0x10,0xCF,0x00,"H1840" }, /* 29 1.84MB 3.5" */
|
{ 1600,10,2,80,0,0x25,0x02,0xDF,0x2E,"D800" }, /* 30 800KB 3.5" */
|
{ 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" */
|
{ 3200,20,2,80,0,0x1C,0x00,0xCF,0x2C,"H1600" }, /* 31 1.6MB 3.5" */
|
};
|
};
|
|
|
#define NUMBER(x) (sizeof(x) / sizeof(*(x)))
|
#define NUMBER(x) (sizeof(x) / sizeof(*(x)))
|
#define SECTSIZE (_FD_SECTSIZE(*floppy))
|
#define SECTSIZE (_FD_SECTSIZE(*floppy))
|
|
|
/* Auto-detection: Disk type used until the next media change occurs. */
|
/* Auto-detection: Disk type used until the next media change occurs. */
|
static struct floppy_struct *current_type[N_DRIVE] = {
|
static struct floppy_struct *current_type[N_DRIVE] = {
|
NULL, NULL, NULL, NULL,
|
NULL, NULL, NULL, NULL,
|
NULL, NULL, NULL, NULL
|
NULL, NULL, NULL, NULL
|
};
|
};
|
|
|
/*
|
/*
|
* User-provided type information. current_type points to
|
* User-provided type information. current_type points to
|
* the respective entry of this array.
|
* the respective entry of this array.
|
*/
|
*/
|
static struct floppy_struct user_params[N_DRIVE];
|
static struct floppy_struct user_params[N_DRIVE];
|
|
|
static int floppy_sizes[256];
|
static int floppy_sizes[256];
|
static int floppy_blocksizes[256] = { 0, };
|
static int floppy_blocksizes[256] = { 0, };
|
|
|
/*
|
/*
|
* The driver is trying to determine the correct media format
|
* The driver is trying to determine the correct media format
|
* while probing is set. rw_interrupt() clears it after a
|
* while probing is set. rw_interrupt() clears it after a
|
* successful access.
|
* successful access.
|
*/
|
*/
|
static int probing = 0;
|
static int probing = 0;
|
|
|
/* Synchronization of FDC access. */
|
/* Synchronization of FDC access. */
|
#define FD_COMMAND_NONE -1
|
#define FD_COMMAND_NONE -1
|
#define FD_COMMAND_ERROR 2
|
#define FD_COMMAND_ERROR 2
|
#define FD_COMMAND_OKAY 3
|
#define FD_COMMAND_OKAY 3
|
|
|
static volatile int command_status = FD_COMMAND_NONE, fdc_busy = 0;
|
static volatile int command_status = FD_COMMAND_NONE, fdc_busy = 0;
|
static struct wait_queue *fdc_wait = NULL, *command_done = NULL;
|
static struct wait_queue *fdc_wait = NULL, *command_done = NULL;
|
#define NO_SIGNAL (!(current->signal & ~current->blocked) || !interruptible)
|
#define NO_SIGNAL (!(current->signal & ~current->blocked) || !interruptible)
|
#define CALL(x) if ((x) == -EINTR) return -EINTR
|
#define CALL(x) if ((x) == -EINTR) return -EINTR
|
#define ECALL(x) if ((ret = (x))) return ret;
|
#define ECALL(x) if ((ret = (x))) return ret;
|
#define _WAIT(x,i) CALL(ret=wait_til_done((x),i))
|
#define _WAIT(x,i) CALL(ret=wait_til_done((x),i))
|
#define WAIT(x) _WAIT((x),interruptible)
|
#define WAIT(x) _WAIT((x),interruptible)
|
#define IWAIT(x) _WAIT((x),1)
|
#define IWAIT(x) _WAIT((x),1)
|
|
|
/* Errors during formatting are counted here. */
|
/* Errors during formatting are counted here. */
|
static int format_errors;
|
static int format_errors;
|
|
|
/* Format request descriptor. */
|
/* Format request descriptor. */
|
static struct format_descr format_req;
|
static struct format_descr format_req;
|
|
|
/*
|
/*
|
* Rate is 0 for 500kb/s, 1 for 300kbps, 2 for 250kbps
|
* 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),
|
* 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)
|
* H is head unload time (1=16ms, 2=32ms, etc)
|
*/
|
*/
|
|
|
/*
|
/*
|
* Track buffer
|
* Track buffer
|
* Because these are written to by the DMA controller, they must
|
* Because these are written to by the DMA controller, they must
|
* not contain a 64k byte boundary crossing, or data will be
|
* not contain a 64k byte boundary crossing, or data will be
|
* corrupted/lost.
|
* corrupted/lost.
|
*/
|
*/
|
static char *floppy_track_buffer=NULL;
|
static char *floppy_track_buffer=NULL;
|
static int max_buffer_sectors=0;
|
static int max_buffer_sectors=0;
|
|
|
static int *errors;
|
static int *errors;
|
typedef void (*done_f)(int);
|
typedef void (*done_f)(int);
|
static struct cont_t {
|
static struct cont_t {
|
void (*interrupt)(void); /* this is called after the interrupt of the
|
void (*interrupt)(void); /* this is called after the interrupt of the
|
* main command */
|
* main command */
|
void (*redo)(void); /* this is called to retry the operation */
|
void (*redo)(void); /* this is called to retry the operation */
|
void (*error)(void); /* this is called to tally an error */
|
void (*error)(void); /* this is called to tally an error */
|
done_f done; /* this is called to say if the operation has
|
done_f done; /* this is called to say if the operation has
|
* succeeded/failed */
|
* succeeded/failed */
|
} *cont=NULL;
|
} *cont=NULL;
|
|
|
static void floppy_ready(void);
|
static void floppy_ready(void);
|
static void floppy_start(void);
|
static void floppy_start(void);
|
static void process_fd_request(void);
|
static void process_fd_request(void);
|
static void recalibrate_floppy(void);
|
static void recalibrate_floppy(void);
|
static void floppy_shutdown(void);
|
static void floppy_shutdown(void);
|
|
|
static int floppy_grab_irq_and_dma(void);
|
static int floppy_grab_irq_and_dma(void);
|
static void floppy_release_irq_and_dma(void);
|
static void floppy_release_irq_and_dma(void);
|
|
|
/*
|
/*
|
* The "reset" variable should be tested whenever an interrupt is scheduled,
|
* 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
|
* 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.
|
* get wedged when the interrupt doesn't come because of a failed command.
|
* reset doesn't need to be tested before sending commands, because
|
* reset doesn't need to be tested before sending commands, because
|
* output_byte is automatically disabled when reset is set.
|
* output_byte is automatically disabled when reset is set.
|
*/
|
*/
|
#define CHECK_RESET { if (FDCS->reset){ reset_fdc(); return; } }
|
#define CHECK_RESET { if (FDCS->reset){ reset_fdc(); return; } }
|
static void reset_fdc(void);
|
static void reset_fdc(void);
|
|
|
/*
|
/*
|
* These are global variables, as that's the easiest way to give
|
* These are global variables, as that's the easiest way to give
|
* information to interrupts. They are the data used for the current
|
* information to interrupts. They are the data used for the current
|
* request.
|
* request.
|
*/
|
*/
|
#define NO_TRACK -1
|
#define NO_TRACK -1
|
#define NEED_1_RECAL -2
|
#define NEED_1_RECAL -2
|
#define NEED_2_RECAL -3
|
#define NEED_2_RECAL -3
|
|
|
/* */
|
/* */
|
static int usage_count = 0;
|
static int usage_count = 0;
|
|
|
|
|
/* buffer related variables */
|
/* buffer related variables */
|
static int buffer_track = -1;
|
static int buffer_track = -1;
|
static int buffer_drive = -1;
|
static int buffer_drive = -1;
|
static int buffer_min = -1;
|
static int buffer_min = -1;
|
static int buffer_max = -1;
|
static int buffer_max = -1;
|
|
|
/* fdc related variables, should end up in a struct */
|
/* fdc related variables, should end up in a struct */
|
static struct floppy_fdc_state fdc_state[N_FDC];
|
static struct floppy_fdc_state fdc_state[N_FDC];
|
static int fdc; /* current fdc */
|
static int fdc; /* current fdc */
|
|
|
static struct floppy_struct *_floppy = floppy_type;
|
static struct floppy_struct *_floppy = floppy_type;
|
static unsigned char current_drive = 0;
|
static unsigned char current_drive = 0;
|
static long current_count_sectors = 0;
|
static long current_count_sectors = 0;
|
static unsigned char sector_t; /* sector in track */
|
static unsigned char sector_t; /* sector in track */
|
|
|
#ifndef fd_eject
|
#ifndef fd_eject
|
#define fd_eject(x) -EINVAL
|
#define fd_eject(x) -EINVAL
|
#endif
|
#endif
|
|
|
#ifdef DEBUGT
|
#ifdef DEBUGT
|
static long unsigned debugtimer;
|
static long unsigned debugtimer;
|
#endif
|
#endif
|
|
|
/*
|
/*
|
* Debugging
|
* Debugging
|
* =========
|
* =========
|
*/
|
*/
|
static inline void set_debugt(void)
|
static inline void set_debugt(void)
|
{
|
{
|
#ifdef DEBUGT
|
#ifdef DEBUGT
|
debugtimer = jiffies;
|
debugtimer = jiffies;
|
#endif
|
#endif
|
}
|
}
|
|
|
static inline void debugt(const char *message)
|
static inline void debugt(const char *message)
|
{
|
{
|
#ifdef DEBUGT
|
#ifdef DEBUGT
|
if (DP->flags & DEBUGT)
|
if (DP->flags & DEBUGT)
|
printk("%s dtime=%lu\n", message, jiffies-debugtimer);
|
printk("%s dtime=%lu\n", message, jiffies-debugtimer);
|
#endif
|
#endif
|
}
|
}
|
|
|
typedef void (*timeout_fn)(unsigned long);
|
typedef void (*timeout_fn)(unsigned long);
|
static struct timer_list fd_timeout ={ NULL, NULL, 0, 0,
|
static struct timer_list fd_timeout ={ NULL, NULL, 0, 0,
|
(timeout_fn) floppy_shutdown };
|
(timeout_fn) floppy_shutdown };
|
|
|
static const char *timeout_message;
|
static const char *timeout_message;
|
|
|
#ifdef FLOPPY_SANITY_CHECK
|
#ifdef FLOPPY_SANITY_CHECK
|
static void is_alive(const char *message)
|
static void is_alive(const char *message)
|
{
|
{
|
/* this routine checks whether the floppy driver is "alive" */
|
/* this routine checks whether the floppy driver is "alive" */
|
if (fdc_busy && command_status < 2 && !fd_timeout.prev){
|
if (fdc_busy && command_status < 2 && !fd_timeout.prev){
|
DPRINT("timeout handler died: %s\n",message);
|
DPRINT("timeout handler died: %s\n",message);
|
}
|
}
|
}
|
}
|
#endif
|
#endif
|
|
|
#ifdef FLOPPY_SANITY_CHECK
|
#ifdef FLOPPY_SANITY_CHECK
|
|
|
#define OLOGSIZE 20
|
#define OLOGSIZE 20
|
|
|
static void (*lasthandler)(void) = NULL;
|
static void (*lasthandler)(void) = NULL;
|
static int interruptjiffies=0;
|
static int interruptjiffies=0;
|
static int resultjiffies=0;
|
static int resultjiffies=0;
|
static int resultsize=0;
|
static int resultsize=0;
|
static int lastredo=0;
|
static int lastredo=0;
|
|
|
static struct output_log {
|
static struct output_log {
|
unsigned char data;
|
unsigned char data;
|
unsigned char status;
|
unsigned char status;
|
unsigned long jiffies;
|
unsigned long jiffies;
|
} output_log[OLOGSIZE];
|
} output_log[OLOGSIZE];
|
|
|
static int output_log_pos=0;
|
static int output_log_pos=0;
|
#endif
|
#endif
|
|
|
#define CURRENTD -1
|
#define CURRENTD -1
|
#define MAXTIMEOUT -2
|
#define MAXTIMEOUT -2
|
|
|
static void reschedule_timeout(int drive, const char *message, int marg)
|
static void reschedule_timeout(int drive, const char *message, int marg)
|
{
|
{
|
if (drive == CURRENTD)
|
if (drive == CURRENTD)
|
drive = current_drive;
|
drive = current_drive;
|
del_timer(&fd_timeout);
|
del_timer(&fd_timeout);
|
if (drive < 0 || drive > N_DRIVE) {
|
if (drive < 0 || drive > N_DRIVE) {
|
fd_timeout.expires = jiffies + 20*HZ;
|
fd_timeout.expires = jiffies + 20*HZ;
|
drive=0;
|
drive=0;
|
} else
|
} else
|
fd_timeout.expires = jiffies + UDP->timeout;
|
fd_timeout.expires = jiffies + UDP->timeout;
|
add_timer(&fd_timeout);
|
add_timer(&fd_timeout);
|
if (UDP->flags & FD_DEBUG){
|
if (UDP->flags & FD_DEBUG){
|
DPRINT("reschedule timeout ");
|
DPRINT("reschedule timeout ");
|
printk(message, marg);
|
printk(message, marg);
|
printk("\n");
|
printk("\n");
|
}
|
}
|
timeout_message = message;
|
timeout_message = message;
|
}
|
}
|
|
|
static int maximum(int a, int b)
|
static int maximum(int a, int b)
|
{
|
{
|
if(a > b)
|
if(a > b)
|
return a;
|
return a;
|
else
|
else
|
return b;
|
return b;
|
}
|
}
|
#define INFBOUND(a,b) (a)=maximum((a),(b));
|
#define INFBOUND(a,b) (a)=maximum((a),(b));
|
|
|
static int minimum(int a, int b)
|
static int minimum(int a, int b)
|
{
|
{
|
if(a < b)
|
if(a < b)
|
return a;
|
return a;
|
else
|
else
|
return b;
|
return b;
|
}
|
}
|
#define SUPBOUND(a,b) (a)=minimum((a),(b));
|
#define SUPBOUND(a,b) (a)=minimum((a),(b));
|
|
|
|
|
/*
|
/*
|
* Bottom half floppy driver.
|
* Bottom half floppy driver.
|
* ==========================
|
* ==========================
|
*
|
*
|
* This part of the file contains the code talking directly to the hardware,
|
* This part of the file contains the code talking directly to the hardware,
|
* and also the main service loop (seek-configure-spinup-command)
|
* and also the main service loop (seek-configure-spinup-command)
|
*/
|
*/
|
|
|
/*
|
/*
|
* disk change.
|
* disk change.
|
* This routine is responsible for maintaining the FD_DISK_CHANGE flag,
|
* This routine is responsible for maintaining the FD_DISK_CHANGE flag,
|
* and the last_checked date.
|
* and the last_checked date.
|
*
|
*
|
* last_checked is the date of the last check which showed 'no disk change'
|
* last_checked is the date of the last check which showed 'no disk change'
|
* FD_DISK_CHANGE is set under two conditions:
|
* FD_DISK_CHANGE is set under two conditions:
|
* 1. The floppy has been changed after some i/o to that floppy already
|
* 1. The floppy has been changed after some i/o to that floppy already
|
* took place.
|
* took place.
|
* 2. No floppy disk is in the drive. This is done in order to ensure that
|
* 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
|
* 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
|
* follows that FD_DISK_CHANGE can only be cleared if there is a disk in
|
* the drive.
|
* the drive.
|
*
|
*
|
* For 1., maxblock is observed. Maxblock is 0 if no i/o has taken place yet.
|
* 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
|
* 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
|
* 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
|
* 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
|
* change line is set, this means either that no disk is in the drive, or
|
* that it has been removed since the last seek.
|
* that it has been removed since the last seek.
|
*
|
*
|
* This means that we really have a third possibility too:
|
* This means that we really have a third possibility too:
|
* The floppy has been changed after the last seek.
|
* The floppy has been changed after the last seek.
|
*/
|
*/
|
|
|
static int disk_change(int drive)
|
static int disk_change(int drive)
|
{
|
{
|
int fdc=FDC(drive);
|
int fdc=FDC(drive);
|
#ifdef FLOPPY_SANITY_CHECK
|
#ifdef FLOPPY_SANITY_CHECK
|
if (jiffies - UDRS->select_date < UDP->select_delay)
|
if (jiffies - UDRS->select_date < UDP->select_delay)
|
DPRINT("WARNING disk change called early\n");
|
DPRINT("WARNING disk change called early\n");
|
if (!(FDCS->dor & (0x10 << UNIT(drive))) ||
|
if (!(FDCS->dor & (0x10 << UNIT(drive))) ||
|
(FDCS->dor & 3) != UNIT(drive) ||
|
(FDCS->dor & 3) != UNIT(drive) ||
|
fdc != FDC(drive)){
|
fdc != FDC(drive)){
|
DPRINT("probing disk change on unselected drive\n");
|
DPRINT("probing disk change on unselected drive\n");
|
DPRINT("drive=%d fdc=%d dor=%x\n",drive, FDC(drive),
|
DPRINT("drive=%d fdc=%d dor=%x\n",drive, FDC(drive),
|
(unsigned int)FDCS->dor);
|
(unsigned int)FDCS->dor);
|
}
|
}
|
#endif
|
#endif
|
|
|
#ifdef DCL_DEBUG
|
#ifdef DCL_DEBUG
|
if (UDP->flags & FD_DEBUG){
|
if (UDP->flags & FD_DEBUG){
|
DPRINT("checking disk change line for drive %d\n",drive);
|
DPRINT("checking disk change line for drive %d\n",drive);
|
DPRINT("jiffies=%ld\n", jiffies);
|
DPRINT("jiffies=%ld\n", jiffies);
|
DPRINT("disk change line=%x\n",fd_inb(FD_DIR)&0x80);
|
DPRINT("disk change line=%x\n",fd_inb(FD_DIR)&0x80);
|
DPRINT("flags=%x\n",UDRS->flags);
|
DPRINT("flags=%x\n",UDRS->flags);
|
}
|
}
|
#endif
|
#endif
|
if (UDP->flags & FD_BROKEN_DCL)
|
if (UDP->flags & FD_BROKEN_DCL)
|
return UTESTF(FD_DISK_CHANGED);
|
return UTESTF(FD_DISK_CHANGED);
|
if ((fd_inb(FD_DIR) ^ UDP->flags) & 0x80){
|
if ((fd_inb(FD_DIR) ^ UDP->flags) & 0x80){
|
USETF(FD_VERIFY); /* verify write protection */
|
USETF(FD_VERIFY); /* verify write protection */
|
if (UDRS->maxblock){
|
if (UDRS->maxblock){
|
/* mark it changed */
|
/* mark it changed */
|
USETF(FD_DISK_CHANGED);
|
USETF(FD_DISK_CHANGED);
|
}
|
}
|
|
|
/* invalidate its geometry */
|
/* invalidate its geometry */
|
if (UDRS->keep_data >= 0) {
|
if (UDRS->keep_data >= 0) {
|
if ((UDP->flags & FTD_MSG) &&
|
if ((UDP->flags & FTD_MSG) &&
|
current_type[drive] != NULL)
|
current_type[drive] != NULL)
|
DPRINT("Disk type is undefined after "
|
DPRINT("Disk type is undefined after "
|
"disk change\n");
|
"disk change\n");
|
current_type[drive] = NULL;
|
current_type[drive] = NULL;
|
floppy_sizes[TOMINOR(drive)] = MAX_DISK_SIZE;
|
floppy_sizes[TOMINOR(drive)] = MAX_DISK_SIZE;
|
}
|
}
|
|
|
/*USETF(FD_DISK_NEWCHANGE);*/
|
/*USETF(FD_DISK_NEWCHANGE);*/
|
return 1;
|
return 1;
|
} else {
|
} else {
|
UDRS->last_checked=jiffies;
|
UDRS->last_checked=jiffies;
|
UCLEARF(FD_DISK_NEWCHANGE);
|
UCLEARF(FD_DISK_NEWCHANGE);
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static inline int is_selected(int dor, int unit)
|
static inline int is_selected(int dor, int unit)
|
{
|
{
|
return ((dor & (0x10 << unit)) && (dor &3) == unit);
|
return ((dor & (0x10 << unit)) && (dor &3) == unit);
|
}
|
}
|
|
|
static int set_dor(int fdc, char mask, char data)
|
static int set_dor(int fdc, char mask, char data)
|
{
|
{
|
register unsigned char drive, unit, newdor,olddor;
|
register unsigned char drive, unit, newdor,olddor;
|
|
|
if (FDCS->address == -1)
|
if (FDCS->address == -1)
|
return -1;
|
return -1;
|
|
|
olddor = FDCS->dor;
|
olddor = FDCS->dor;
|
newdor = (olddor & mask) | data;
|
newdor = (olddor & mask) | data;
|
if (newdor != olddor){
|
if (newdor != olddor){
|
unit = olddor & 0x3;
|
unit = olddor & 0x3;
|
if (is_selected(olddor, unit) && !is_selected(newdor,unit)){
|
if (is_selected(olddor, unit) && !is_selected(newdor,unit)){
|
drive = REVDRIVE(fdc,unit);
|
drive = REVDRIVE(fdc,unit);
|
#ifdef DCL_DEBUG
|
#ifdef DCL_DEBUG
|
if (UDP->flags & FD_DEBUG){
|
if (UDP->flags & FD_DEBUG){
|
DPRINT("calling disk change from set_dor\n");
|
DPRINT("calling disk change from set_dor\n");
|
}
|
}
|
#endif
|
#endif
|
disk_change(drive);
|
disk_change(drive);
|
}
|
}
|
FDCS->dor = newdor;
|
FDCS->dor = newdor;
|
fd_setdor(newdor);
|
fd_setdor(newdor);
|
|
|
unit = newdor & 0x3;
|
unit = newdor & 0x3;
|
if (!is_selected(olddor, unit) && is_selected(newdor,unit)){
|
if (!is_selected(olddor, unit) && is_selected(newdor,unit)){
|
drive = REVDRIVE(fdc,unit);
|
drive = REVDRIVE(fdc,unit);
|
UDRS->select_date = jiffies;
|
UDRS->select_date = jiffies;
|
}
|
}
|
}
|
}
|
if (newdor & FLOPPY_MOTOR_MASK)
|
if (newdor & FLOPPY_MOTOR_MASK)
|
floppy_grab_irq_and_dma();
|
floppy_grab_irq_and_dma();
|
if (olddor & FLOPPY_MOTOR_MASK)
|
if (olddor & FLOPPY_MOTOR_MASK)
|
floppy_release_irq_and_dma();
|
floppy_release_irq_and_dma();
|
return olddor;
|
return olddor;
|
}
|
}
|
|
|
static void twaddle(void)
|
static void twaddle(void)
|
{
|
{
|
if (DP->select_delay)
|
if (DP->select_delay)
|
return;
|
return;
|
fd_setdor(FDCS->dor & ~(0x10<<UNIT(current_drive)));
|
fd_setdor(FDCS->dor & ~(0x10<<UNIT(current_drive)));
|
fd_setdor(FDCS->dor);
|
fd_setdor(FDCS->dor);
|
DRS->select_date = jiffies;
|
DRS->select_date = jiffies;
|
}
|
}
|
|
|
/* reset all driver information about the current fdc. This is needed after
|
/* reset all driver information about the current fdc. This is needed after
|
* a reset, and after a raw command. */
|
* a reset, and after a raw command. */
|
static void reset_fdc_info(int mode)
|
static void reset_fdc_info(int mode)
|
{
|
{
|
int drive;
|
int drive;
|
|
|
FDCS->spec1 = FDCS->spec2 = -1;
|
FDCS->spec1 = FDCS->spec2 = -1;
|
FDCS->need_configure = 1;
|
FDCS->need_configure = 1;
|
FDCS->perp_mode = 1;
|
FDCS->perp_mode = 1;
|
FDCS->rawcmd = 0;
|
FDCS->rawcmd = 0;
|
for (drive = 0; drive < N_DRIVE; drive++)
|
for (drive = 0; drive < N_DRIVE; drive++)
|
if (FDC(drive) == fdc &&
|
if (FDC(drive) == fdc &&
|
(mode || UDRS->track != NEED_1_RECAL))
|
(mode || UDRS->track != NEED_1_RECAL))
|
UDRS->track = NEED_2_RECAL;
|
UDRS->track = NEED_2_RECAL;
|
}
|
}
|
|
|
/* selects the fdc and drive, and enables the fdc's input/dma. */
|
/* selects the fdc and drive, and enables the fdc's input/dma. */
|
static void set_fdc(int drive)
|
static void set_fdc(int drive)
|
{
|
{
|
if (drive >= 0 && drive < N_DRIVE){
|
if (drive >= 0 && drive < N_DRIVE){
|
fdc = FDC(drive);
|
fdc = FDC(drive);
|
current_drive = drive;
|
current_drive = drive;
|
}
|
}
|
if (fdc != 1 && fdc != 0) {
|
if (fdc != 1 && fdc != 0) {
|
printk("bad fdc value\n");
|
printk("bad fdc value\n");
|
return;
|
return;
|
}
|
}
|
set_dor(fdc,~0,8);
|
set_dor(fdc,~0,8);
|
#if N_FDC > 1
|
#if N_FDC > 1
|
set_dor(1-fdc, ~8, 0);
|
set_dor(1-fdc, ~8, 0);
|
#endif
|
#endif
|
if (FDCS->rawcmd == 2)
|
if (FDCS->rawcmd == 2)
|
reset_fdc_info(1);
|
reset_fdc_info(1);
|
if (fd_inb(FD_STATUS) != STATUS_READY)
|
if (fd_inb(FD_STATUS) != STATUS_READY)
|
FDCS->reset = 1;
|
FDCS->reset = 1;
|
}
|
}
|
|
|
/* locks the driver */
|
/* locks the driver */
|
static int lock_fdc(int drive, int interruptible)
|
static int lock_fdc(int drive, int interruptible)
|
{
|
{
|
unsigned long flags;
|
unsigned long flags;
|
|
|
if (!usage_count){
|
if (!usage_count){
|
printk("trying to lock fdc while usage count=0\n");
|
printk("trying to lock fdc while usage count=0\n");
|
return -1;
|
return -1;
|
}
|
}
|
floppy_grab_irq_and_dma();
|
floppy_grab_irq_and_dma();
|
INT_OFF;
|
INT_OFF;
|
while (fdc_busy && NO_SIGNAL)
|
while (fdc_busy && NO_SIGNAL)
|
interruptible_sleep_on(&fdc_wait);
|
interruptible_sleep_on(&fdc_wait);
|
if (fdc_busy){
|
if (fdc_busy){
|
INT_ON;
|
INT_ON;
|
return -EINTR;
|
return -EINTR;
|
}
|
}
|
fdc_busy = 1;
|
fdc_busy = 1;
|
INT_ON;
|
INT_ON;
|
command_status = FD_COMMAND_NONE;
|
command_status = FD_COMMAND_NONE;
|
reschedule_timeout(drive, "lock fdc", 0);
|
reschedule_timeout(drive, "lock fdc", 0);
|
set_fdc(drive);
|
set_fdc(drive);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
#define LOCK_FDC(drive,interruptible) \
|
#define LOCK_FDC(drive,interruptible) \
|
if (lock_fdc(drive,interruptible)) return -EINTR;
|
if (lock_fdc(drive,interruptible)) return -EINTR;
|
|
|
|
|
/* unlocks the driver */
|
/* unlocks the driver */
|
static inline void unlock_fdc(void)
|
static inline void unlock_fdc(void)
|
{
|
{
|
raw_cmd = 0;
|
raw_cmd = 0;
|
if (!fdc_busy)
|
if (!fdc_busy)
|
DPRINT("FDC access conflict!\n");
|
DPRINT("FDC access conflict!\n");
|
|
|
if (DEVICE_INTR)
|
if (DEVICE_INTR)
|
DPRINT("device interrupt still active at FDC release: %p!\n",
|
DPRINT("device interrupt still active at FDC release: %p!\n",
|
DEVICE_INTR);
|
DEVICE_INTR);
|
command_status = FD_COMMAND_NONE;
|
command_status = FD_COMMAND_NONE;
|
del_timer(&fd_timeout);
|
del_timer(&fd_timeout);
|
cont = NULL;
|
cont = NULL;
|
fdc_busy = 0;
|
fdc_busy = 0;
|
floppy_release_irq_and_dma();
|
floppy_release_irq_and_dma();
|
wake_up(&fdc_wait);
|
wake_up(&fdc_wait);
|
}
|
}
|
|
|
/* switches the motor off after a given timeout */
|
/* switches the motor off after a given timeout */
|
static void motor_off_callback(unsigned long nr)
|
static void motor_off_callback(unsigned long nr)
|
{
|
{
|
unsigned char mask = ~(0x10 << UNIT(nr));
|
unsigned char mask = ~(0x10 << UNIT(nr));
|
|
|
set_dor(FDC(nr), mask, 0);
|
set_dor(FDC(nr), mask, 0);
|
}
|
}
|
|
|
static struct timer_list motor_off_timer[N_DRIVE] = {
|
static struct timer_list motor_off_timer[N_DRIVE] = {
|
{ NULL, NULL, 0, 0, motor_off_callback },
|
{ NULL, NULL, 0, 0, motor_off_callback },
|
{ NULL, NULL, 0, 1, motor_off_callback },
|
{ NULL, NULL, 0, 1, motor_off_callback },
|
{ NULL, NULL, 0, 2, motor_off_callback },
|
{ NULL, NULL, 0, 2, motor_off_callback },
|
{ NULL, NULL, 0, 3, motor_off_callback },
|
{ NULL, NULL, 0, 3, motor_off_callback },
|
{ NULL, NULL, 0, 4, motor_off_callback },
|
{ NULL, NULL, 0, 4, motor_off_callback },
|
{ NULL, NULL, 0, 5, motor_off_callback },
|
{ NULL, NULL, 0, 5, motor_off_callback },
|
{ NULL, NULL, 0, 6, motor_off_callback },
|
{ NULL, NULL, 0, 6, motor_off_callback },
|
{ NULL, NULL, 0, 7, motor_off_callback }
|
{ NULL, NULL, 0, 7, motor_off_callback }
|
};
|
};
|
|
|
/* schedules motor off */
|
/* schedules motor off */
|
static void floppy_off(unsigned int drive)
|
static void floppy_off(unsigned int drive)
|
{
|
{
|
unsigned long volatile delta;
|
unsigned long volatile delta;
|
register int fdc=FDC(drive);
|
register int fdc=FDC(drive);
|
|
|
if (!(FDCS->dor & (0x10 << UNIT(drive))))
|
if (!(FDCS->dor & (0x10 << UNIT(drive))))
|
return;
|
return;
|
|
|
del_timer(motor_off_timer+drive);
|
del_timer(motor_off_timer+drive);
|
|
|
/* make spindle stop in a position which minimizes spinup time
|
/* make spindle stop in a position which minimizes spinup time
|
* next time */
|
* next time */
|
if (UDP->rps){
|
if (UDP->rps){
|
delta = jiffies - UDRS->first_read_date + HZ -
|
delta = jiffies - UDRS->first_read_date + HZ -
|
UDP->spindown_offset;
|
UDP->spindown_offset;
|
delta = ((delta * UDP->rps) % HZ) / UDP->rps;
|
delta = ((delta * UDP->rps) % HZ) / UDP->rps;
|
motor_off_timer[drive].expires = jiffies + UDP->spindown - delta;
|
motor_off_timer[drive].expires = jiffies + UDP->spindown - delta;
|
}
|
}
|
add_timer(motor_off_timer+drive);
|
add_timer(motor_off_timer+drive);
|
}
|
}
|
|
|
/*
|
/*
|
* cycle through all N_DRIVE floppy drives, for disk change testing.
|
* cycle through all N_DRIVE floppy drives, for disk change testing.
|
* stopping at current drive. This is done before any long operation, to
|
* stopping at current drive. This is done before any long operation, to
|
* be sure to have up to date disk change information.
|
* be sure to have up to date disk change information.
|
*/
|
*/
|
static void scandrives(void)
|
static void scandrives(void)
|
{
|
{
|
int i, drive, saved_drive;
|
int i, drive, saved_drive;
|
|
|
if (DP->select_delay)
|
if (DP->select_delay)
|
return;
|
return;
|
|
|
saved_drive = current_drive;
|
saved_drive = current_drive;
|
for (i=0; i < N_DRIVE; i++){
|
for (i=0; i < N_DRIVE; i++){
|
drive = (saved_drive + i + 1) % N_DRIVE;
|
drive = (saved_drive + i + 1) % N_DRIVE;
|
if (UDRS->fd_ref == 0 || UDP->select_delay != 0)
|
if (UDRS->fd_ref == 0 || UDP->select_delay != 0)
|
continue; /* skip closed drives */
|
continue; /* skip closed drives */
|
set_fdc(drive);
|
set_fdc(drive);
|
if (!(set_dor(fdc, ~3, UNIT(drive) | (0x10 << UNIT(drive))) &
|
if (!(set_dor(fdc, ~3, UNIT(drive) | (0x10 << UNIT(drive))) &
|
(0x10 << UNIT(drive))))
|
(0x10 << UNIT(drive))))
|
/* switch the motor off again, if it was off to
|
/* switch the motor off again, if it was off to
|
* begin with */
|
* begin with */
|
set_dor(fdc, ~(0x10 << UNIT(drive)), 0);
|
set_dor(fdc, ~(0x10 << UNIT(drive)), 0);
|
}
|
}
|
set_fdc(saved_drive);
|
set_fdc(saved_drive);
|
}
|
}
|
|
|
static void empty(void)
|
static void empty(void)
|
{
|
{
|
}
|
}
|
|
|
static struct tq_struct floppy_tq =
|
static struct tq_struct floppy_tq =
|
{ 0, 0, 0, 0 };
|
{ 0, 0, 0, 0 };
|
|
|
static struct timer_list fd_timer ={ NULL, NULL, 0, 0, 0 };
|
static struct timer_list fd_timer ={ NULL, NULL, 0, 0, 0 };
|
|
|
static void cancel_activity(void)
|
static void cancel_activity(void)
|
{
|
{
|
CLEAR_INTR;
|
CLEAR_INTR;
|
floppy_tq.routine = (void *)(void *) empty;
|
floppy_tq.routine = (void *)(void *) empty;
|
del_timer(&fd_timer);
|
del_timer(&fd_timer);
|
}
|
}
|
|
|
/* this function makes sure that the disk stays in the drive during the
|
/* this function makes sure that the disk stays in the drive during the
|
* transfer */
|
* transfer */
|
static void fd_watchdog(void)
|
static void fd_watchdog(void)
|
{
|
{
|
#ifdef DCL_DEBUG
|
#ifdef DCL_DEBUG
|
if (DP->flags & FD_DEBUG){
|
if (DP->flags & FD_DEBUG){
|
DPRINT("calling disk change from watchdog\n");
|
DPRINT("calling disk change from watchdog\n");
|
}
|
}
|
#endif
|
#endif
|
|
|
if (disk_change(current_drive)){
|
if (disk_change(current_drive)){
|
DPRINT("disk removed during i/o\n");
|
DPRINT("disk removed during i/o\n");
|
cancel_activity();
|
cancel_activity();
|
cont->done(0);
|
cont->done(0);
|
reset_fdc();
|
reset_fdc();
|
} else {
|
} else {
|
del_timer(&fd_timer);
|
del_timer(&fd_timer);
|
fd_timer.function = (timeout_fn) fd_watchdog;
|
fd_timer.function = (timeout_fn) fd_watchdog;
|
fd_timer.expires = jiffies + HZ / 10;
|
fd_timer.expires = jiffies + HZ / 10;
|
add_timer(&fd_timer);
|
add_timer(&fd_timer);
|
}
|
}
|
}
|
}
|
|
|
static void main_command_interrupt(void)
|
static void main_command_interrupt(void)
|
{
|
{
|
del_timer(&fd_timer);
|
del_timer(&fd_timer);
|
cont->interrupt();
|
cont->interrupt();
|
}
|
}
|
|
|
/* waits for a delay (spinup or select) to pass */
|
/* waits for a delay (spinup or select) to pass */
|
static int wait_for_completion(int delay, timeout_fn function)
|
static int wait_for_completion(int delay, timeout_fn function)
|
{
|
{
|
if (FDCS->reset){
|
if (FDCS->reset){
|
reset_fdc(); /* do the reset during sleep to win time
|
reset_fdc(); /* do the reset during sleep to win time
|
* if we don't need to sleep, it's a good
|
* if we don't need to sleep, it's a good
|
* occasion anyways */
|
* occasion anyways */
|
return 1;
|
return 1;
|
}
|
}
|
|
|
if ((signed) (jiffies - delay) < 0){
|
if ((signed) (jiffies - delay) < 0){
|
del_timer(&fd_timer);
|
del_timer(&fd_timer);
|
fd_timer.function = function;
|
fd_timer.function = function;
|
fd_timer.expires = delay;
|
fd_timer.expires = delay;
|
add_timer(&fd_timer);
|
add_timer(&fd_timer);
|
return 1;
|
return 1;
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static int hlt_disabled=0;
|
static int hlt_disabled=0;
|
static void floppy_disable_hlt(void)
|
static void floppy_disable_hlt(void)
|
{
|
{
|
unsigned long flags;
|
unsigned long flags;
|
|
|
INT_OFF;
|
INT_OFF;
|
if (!hlt_disabled){
|
if (!hlt_disabled){
|
hlt_disabled=1;
|
hlt_disabled=1;
|
#ifdef HAVE_DISABLE_HLT
|
#ifdef HAVE_DISABLE_HLT
|
disable_hlt();
|
disable_hlt();
|
#endif
|
#endif
|
}
|
}
|
INT_ON;
|
INT_ON;
|
}
|
}
|
|
|
static void floppy_enable_hlt(void)
|
static void floppy_enable_hlt(void)
|
{
|
{
|
unsigned long flags;
|
unsigned long flags;
|
|
|
INT_OFF;
|
INT_OFF;
|
if (hlt_disabled){
|
if (hlt_disabled){
|
hlt_disabled=0;
|
hlt_disabled=0;
|
#ifdef HAVE_DISABLE_HLT
|
#ifdef HAVE_DISABLE_HLT
|
enable_hlt();
|
enable_hlt();
|
#endif
|
#endif
|
}
|
}
|
INT_ON;
|
INT_ON;
|
}
|
}
|
|
|
|
|
static void setup_DMA(void)
|
static void setup_DMA(void)
|
{
|
{
|
unsigned long flags;
|
unsigned long flags;
|
|
|
#ifdef FLOPPY_SANITY_CHECK
|
#ifdef FLOPPY_SANITY_CHECK
|
if (raw_cmd->length == 0){
|
if (raw_cmd->length == 0){
|
int i;
|
int i;
|
|
|
printk("zero dma transfer size:");
|
printk("zero dma transfer size:");
|
for (i=0; i < raw_cmd->cmd_count; i++)
|
for (i=0; i < raw_cmd->cmd_count; i++)
|
printk("%x,", raw_cmd->cmd[i]);
|
printk("%x,", raw_cmd->cmd[i]);
|
printk("\n");
|
printk("\n");
|
cont->done(0);
|
cont->done(0);
|
FDCS->reset = 1;
|
FDCS->reset = 1;
|
return;
|
return;
|
}
|
}
|
#if 0
|
#if 0
|
if ((long) raw_cmd->kernel_data % 512){
|
if ((long) raw_cmd->kernel_data % 512){
|
printk("non aligned address: %p\n", raw_cmd->kernel_data);
|
printk("non aligned address: %p\n", raw_cmd->kernel_data);
|
cont->done(0);
|
cont->done(0);
|
FDCS->reset=1;
|
FDCS->reset=1;
|
return;
|
return;
|
}
|
}
|
if (CROSS_64KB(raw_cmd->kernel_data, raw_cmd->length)) {
|
if (CROSS_64KB(raw_cmd->kernel_data, raw_cmd->length)) {
|
printk("DMA crossing 64-K boundary %p-%p\n",
|
printk("DMA crossing 64-K boundary %p-%p\n",
|
raw_cmd->kernel_data,
|
raw_cmd->kernel_data,
|
raw_cmd->kernel_data + raw_cmd->length);
|
raw_cmd->kernel_data + raw_cmd->length);
|
cont->done(0);
|
cont->done(0);
|
FDCS->reset=1;
|
FDCS->reset=1;
|
return;
|
return;
|
}
|
}
|
#endif
|
#endif
|
#endif
|
#endif
|
INT_OFF;
|
INT_OFF;
|
fd_disable_dma();
|
fd_disable_dma();
|
fd_clear_dma_ff();
|
fd_clear_dma_ff();
|
fd_cacheflush(raw_cmd->kernel_data, raw_cmd->length);
|
fd_cacheflush(raw_cmd->kernel_data, raw_cmd->length);
|
fd_set_dma_mode((raw_cmd->flags & FD_RAW_READ)?
|
fd_set_dma_mode((raw_cmd->flags & FD_RAW_READ)?
|
DMA_MODE_READ : DMA_MODE_WRITE);
|
DMA_MODE_READ : DMA_MODE_WRITE);
|
fd_set_dma_addr(virt_to_bus(raw_cmd->kernel_data));
|
fd_set_dma_addr(virt_to_bus(raw_cmd->kernel_data));
|
fd_set_dma_count(raw_cmd->length);
|
fd_set_dma_count(raw_cmd->length);
|
virtual_dma_port = FDCS->address;
|
virtual_dma_port = FDCS->address;
|
fd_enable_dma();
|
fd_enable_dma();
|
INT_ON;
|
INT_ON;
|
floppy_disable_hlt();
|
floppy_disable_hlt();
|
}
|
}
|
|
|
void show_floppy(void);
|
void show_floppy(void);
|
|
|
/* waits until the fdc becomes ready */
|
/* waits until the fdc becomes ready */
|
static int wait_til_ready(void)
|
static int wait_til_ready(void)
|
{
|
{
|
int counter, status;
|
int counter, status;
|
if(FDCS->reset)
|
if(FDCS->reset)
|
return -1;
|
return -1;
|
for (counter = 0; counter < 10000; counter++) {
|
for (counter = 0; counter < 10000; counter++) {
|
status = fd_inb(FD_STATUS);
|
status = fd_inb(FD_STATUS);
|
if (status & STATUS_READY)
|
if (status & STATUS_READY)
|
return status;
|
return status;
|
}
|
}
|
if (!initialising) {
|
if (!initialising) {
|
DPRINT("Getstatus times out (%x) on fdc %d\n",
|
DPRINT("Getstatus times out (%x) on fdc %d\n",
|
status, fdc);
|
status, fdc);
|
show_floppy();
|
show_floppy();
|
}
|
}
|
FDCS->reset = 1;
|
FDCS->reset = 1;
|
return -1;
|
return -1;
|
}
|
}
|
|
|
/* sends a command byte to the fdc */
|
/* sends a command byte to the fdc */
|
static int output_byte(char byte)
|
static int output_byte(char byte)
|
{
|
{
|
int status;
|
int status;
|
|
|
if ((status = wait_til_ready()) < 0)
|
if ((status = wait_til_ready()) < 0)
|
return -1;
|
return -1;
|
if ((status & (STATUS_READY|STATUS_DIR|STATUS_DMA)) == STATUS_READY){
|
if ((status & (STATUS_READY|STATUS_DIR|STATUS_DMA)) == STATUS_READY){
|
fd_outb(byte,FD_DATA);
|
fd_outb(byte,FD_DATA);
|
#ifdef FLOPPY_SANITY_CHECK
|
#ifdef FLOPPY_SANITY_CHECK
|
output_log[output_log_pos].data = byte;
|
output_log[output_log_pos].data = byte;
|
output_log[output_log_pos].status = status;
|
output_log[output_log_pos].status = status;
|
output_log[output_log_pos].jiffies = jiffies;
|
output_log[output_log_pos].jiffies = jiffies;
|
output_log_pos = (output_log_pos + 1) % OLOGSIZE;
|
output_log_pos = (output_log_pos + 1) % OLOGSIZE;
|
#endif
|
#endif
|
return 0;
|
return 0;
|
}
|
}
|
FDCS->reset = 1;
|
FDCS->reset = 1;
|
if (!initialising) {
|
if (!initialising) {
|
DPRINT("Unable to send byte %x to FDC. Fdc=%x Status=%x\n",
|
DPRINT("Unable to send byte %x to FDC. Fdc=%x Status=%x\n",
|
byte, fdc, status);
|
byte, fdc, status);
|
show_floppy();
|
show_floppy();
|
}
|
}
|
return -1;
|
return -1;
|
}
|
}
|
#define LAST_OUT(x) if (output_byte(x)<0){ reset_fdc();return;}
|
#define LAST_OUT(x) if (output_byte(x)<0){ reset_fdc();return;}
|
|
|
/* gets the response from the fdc */
|
/* gets the response from the fdc */
|
static int result(void)
|
static int result(void)
|
{
|
{
|
int i, status;
|
int i, status;
|
|
|
for(i=0; i < MAX_REPLIES; i++) {
|
for(i=0; i < MAX_REPLIES; i++) {
|
if ((status = wait_til_ready()) < 0)
|
if ((status = wait_til_ready()) < 0)
|
break;
|
break;
|
status &= STATUS_DIR|STATUS_READY|STATUS_BUSY|STATUS_DMA;
|
status &= STATUS_DIR|STATUS_READY|STATUS_BUSY|STATUS_DMA;
|
if ((status & ~STATUS_BUSY) == STATUS_READY){
|
if ((status & ~STATUS_BUSY) == STATUS_READY){
|
#ifdef FLOPPY_SANITY_CHECK
|
#ifdef FLOPPY_SANITY_CHECK
|
resultjiffies = jiffies;
|
resultjiffies = jiffies;
|
resultsize = i;
|
resultsize = i;
|
#endif
|
#endif
|
return i;
|
return i;
|
}
|
}
|
if (status == (STATUS_DIR|STATUS_READY|STATUS_BUSY))
|
if (status == (STATUS_DIR|STATUS_READY|STATUS_BUSY))
|
reply_buffer[i] = fd_inb(FD_DATA);
|
reply_buffer[i] = fd_inb(FD_DATA);
|
else
|
else
|
break;
|
break;
|
}
|
}
|
if(!initialising) {
|
if(!initialising) {
|
DPRINT("get result error. Fdc=%d Last status=%x Read bytes=%d\n",
|
DPRINT("get result error. Fdc=%d Last status=%x Read bytes=%d\n",
|
fdc, status, i);
|
fdc, status, i);
|
show_floppy();
|
show_floppy();
|
}
|
}
|
FDCS->reset = 1;
|
FDCS->reset = 1;
|
return -1;
|
return -1;
|
}
|
}
|
|
|
#define MORE_OUTPUT -2
|
#define MORE_OUTPUT -2
|
/* does the fdc need more output? */
|
/* does the fdc need more output? */
|
static int need_more_output(void)
|
static int need_more_output(void)
|
{
|
{
|
int status;
|
int status;
|
if( (status = wait_til_ready()) < 0)
|
if( (status = wait_til_ready()) < 0)
|
return -1;
|
return -1;
|
if ((status & (STATUS_READY|STATUS_DIR|STATUS_DMA)) == STATUS_READY)
|
if ((status & (STATUS_READY|STATUS_DIR|STATUS_DMA)) == STATUS_READY)
|
return MORE_OUTPUT;
|
return MORE_OUTPUT;
|
return result();
|
return result();
|
}
|
}
|
|
|
/* Set perpendicular mode as required, based on data rate, if supported.
|
/* Set perpendicular mode as required, based on data rate, if supported.
|
* 82077 Now tested. 1Mbps data rate only possible with 82077-1.
|
* 82077 Now tested. 1Mbps data rate only possible with 82077-1.
|
*/
|
*/
|
static inline void perpendicular_mode(void)
|
static inline void perpendicular_mode(void)
|
{
|
{
|
unsigned char perp_mode;
|
unsigned char perp_mode;
|
|
|
if (raw_cmd->rate & 0x40){
|
if (raw_cmd->rate & 0x40){
|
switch(raw_cmd->rate & 3){
|
switch(raw_cmd->rate & 3){
|
case 0:
|
case 0:
|
perp_mode=2;
|
perp_mode=2;
|
break;
|
break;
|
case 3:
|
case 3:
|
perp_mode=3;
|
perp_mode=3;
|
break;
|
break;
|
default:
|
default:
|
DPRINT("Invalid data rate for perpendicular mode!\n");
|
DPRINT("Invalid data rate for perpendicular mode!\n");
|
cont->done(0);
|
cont->done(0);
|
FDCS->reset = 1; /* convenient way to return to
|
FDCS->reset = 1; /* convenient way to return to
|
* redo without to much hassle (deep
|
* redo without to much hassle (deep
|
* stack et al. */
|
* stack et al. */
|
return;
|
return;
|
}
|
}
|
} else
|
} else
|
perp_mode = 0;
|
perp_mode = 0;
|
|
|
if (FDCS->perp_mode == perp_mode)
|
if (FDCS->perp_mode == perp_mode)
|
return;
|
return;
|
if (FDCS->version >= FDC_82077_ORIG) {
|
if (FDCS->version >= FDC_82077_ORIG) {
|
output_byte(FD_PERPENDICULAR);
|
output_byte(FD_PERPENDICULAR);
|
output_byte(perp_mode);
|
output_byte(perp_mode);
|
FDCS->perp_mode = perp_mode;
|
FDCS->perp_mode = perp_mode;
|
} else if (perp_mode) {
|
} else if (perp_mode) {
|
DPRINT("perpendicular mode not supported by this FDC.\n");
|
DPRINT("perpendicular mode not supported by this FDC.\n");
|
}
|
}
|
} /* perpendicular_mode */
|
} /* perpendicular_mode */
|
|
|
static int fifo_depth = 0xa;
|
static int fifo_depth = 0xa;
|
static int no_fifo = 0;
|
static int no_fifo = 0;
|
|
|
static int fdc_configure(void)
|
static int fdc_configure(void)
|
{
|
{
|
/* Turn on FIFO */
|
/* Turn on FIFO */
|
output_byte(FD_CONFIGURE);
|
output_byte(FD_CONFIGURE);
|
if(need_more_output() != MORE_OUTPUT)
|
if(need_more_output() != MORE_OUTPUT)
|
return 0;
|
return 0;
|
output_byte(0);
|
output_byte(0);
|
output_byte(0x10 | (no_fifo & 0x20) | (fifo_depth & 0xf));
|
output_byte(0x10 | (no_fifo & 0x20) | (fifo_depth & 0xf));
|
output_byte(0); /* pre-compensation from track
|
output_byte(0); /* pre-compensation from track
|
0 upwards */
|
0 upwards */
|
return 1;
|
return 1;
|
}
|
}
|
|
|
#define NOMINAL_DTR 500
|
#define NOMINAL_DTR 500
|
|
|
/* Issue a "SPECIFY" command to set the step rate time, head unload time,
|
/* 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.
|
* 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
|
* 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
|
* 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.
|
* FDC types. This parameter is ignored for other types of FDCs (i.e.
|
* 8272a).
|
* 8272a).
|
*
|
*
|
* Note that changing the data transfer rate has a (probably deleterious)
|
* Note that changing the data transfer rate has a (probably deleterious)
|
* effect on the parameters subject to scaling for 82072/82077 FDCs, so
|
* effect on the parameters subject to scaling for 82072/82077 FDCs, so
|
* fdc_specify is called again after each data transfer rate
|
* fdc_specify is called again after each data transfer rate
|
* change.
|
* change.
|
*
|
*
|
* srt: 1000 to 16000 in microseconds
|
* srt: 1000 to 16000 in microseconds
|
* hut: 16 to 240 milliseconds
|
* hut: 16 to 240 milliseconds
|
* hlt: 2 to 254 milliseconds
|
* hlt: 2 to 254 milliseconds
|
*
|
*
|
* These values are rounded up to the next highest available delay time.
|
* These values are rounded up to the next highest available delay time.
|
*/
|
*/
|
static void fdc_specify(void)
|
static void fdc_specify(void)
|
{
|
{
|
unsigned char spec1, spec2;
|
unsigned char spec1, spec2;
|
int srt, hlt, hut;
|
int srt, hlt, hut;
|
unsigned long dtr = NOMINAL_DTR;
|
unsigned long dtr = NOMINAL_DTR;
|
unsigned long scale_dtr = NOMINAL_DTR;
|
unsigned long scale_dtr = NOMINAL_DTR;
|
int hlt_max_code = 0x7f;
|
int hlt_max_code = 0x7f;
|
int hut_max_code = 0xf;
|
int hut_max_code = 0xf;
|
|
|
if (FDCS->need_configure && FDCS->version >= FDC_82072A) {
|
if (FDCS->need_configure && FDCS->version >= FDC_82072A) {
|
fdc_configure();
|
fdc_configure();
|
FDCS->need_configure = 0;
|
FDCS->need_configure = 0;
|
/*DPRINT("FIFO enabled\n");*/
|
/*DPRINT("FIFO enabled\n");*/
|
}
|
}
|
|
|
switch (raw_cmd->rate & 0x03) {
|
switch (raw_cmd->rate & 0x03) {
|
case 3:
|
case 3:
|
dtr = 1000;
|
dtr = 1000;
|
break;
|
break;
|
case 1:
|
case 1:
|
dtr = 300;
|
dtr = 300;
|
if (FDCS->version >= FDC_82078) {
|
if (FDCS->version >= FDC_82078) {
|
/* chose the default rate table, not the one
|
/* chose the default rate table, not the one
|
* where 1 = 2 Mbps */
|
* where 1 = 2 Mbps */
|
output_byte(FD_DRIVESPEC);
|
output_byte(FD_DRIVESPEC);
|
if(need_more_output() == MORE_OUTPUT) {
|
if(need_more_output() == MORE_OUTPUT) {
|
output_byte(UNIT(current_drive));
|
output_byte(UNIT(current_drive));
|
output_byte(0xc0);
|
output_byte(0xc0);
|
}
|
}
|
}
|
}
|
break;
|
break;
|
case 2:
|
case 2:
|
dtr = 250;
|
dtr = 250;
|
break;
|
break;
|
}
|
}
|
|
|
if (FDCS->version >= FDC_82072) {
|
if (FDCS->version >= FDC_82072) {
|
scale_dtr = dtr;
|
scale_dtr = dtr;
|
hlt_max_code = 0x00; /* 0==256msec*dtr0/dtr (not linear!) */
|
hlt_max_code = 0x00; /* 0==256msec*dtr0/dtr (not linear!) */
|
hut_max_code = 0x0; /* 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 */
|
/* Convert step rate from microseconds to milliseconds and 4 bits */
|
srt = 16 - (DP->srt*scale_dtr/1000 + NOMINAL_DTR - 1)/NOMINAL_DTR;
|
srt = 16 - (DP->srt*scale_dtr/1000 + NOMINAL_DTR - 1)/NOMINAL_DTR;
|
SUPBOUND(srt, 0xf);
|
SUPBOUND(srt, 0xf);
|
INFBOUND(srt, 0);
|
INFBOUND(srt, 0);
|
|
|
hlt = (DP->hlt*scale_dtr/2 + NOMINAL_DTR - 1)/NOMINAL_DTR;
|
hlt = (DP->hlt*scale_dtr/2 + NOMINAL_DTR - 1)/NOMINAL_DTR;
|
if (hlt < 0x01)
|
if (hlt < 0x01)
|
hlt = 0x01;
|
hlt = 0x01;
|
else if (hlt > 0x7f)
|
else if (hlt > 0x7f)
|
hlt = hlt_max_code;
|
hlt = hlt_max_code;
|
|
|
hut = (DP->hut*scale_dtr/16 + NOMINAL_DTR - 1)/NOMINAL_DTR;
|
hut = (DP->hut*scale_dtr/16 + NOMINAL_DTR - 1)/NOMINAL_DTR;
|
if (hut < 0x1)
|
if (hut < 0x1)
|
hut = 0x1;
|
hut = 0x1;
|
else if (hut > 0xf)
|
else if (hut > 0xf)
|
hut = hut_max_code;
|
hut = hut_max_code;
|
|
|
spec1 = (srt << 4) | hut;
|
spec1 = (srt << 4) | hut;
|
spec2 = (hlt << 1) | (use_virtual_dma & 1);
|
spec2 = (hlt << 1) | (use_virtual_dma & 1);
|
|
|
/* If these parameters did not change, just return with success */
|
/* If these parameters did not change, just return with success */
|
if (FDCS->spec1 != spec1 || FDCS->spec2 != spec2) {
|
if (FDCS->spec1 != spec1 || FDCS->spec2 != spec2) {
|
/* Go ahead and set spec1 and spec2 */
|
/* Go ahead and set spec1 and spec2 */
|
output_byte(FD_SPECIFY);
|
output_byte(FD_SPECIFY);
|
output_byte(FDCS->spec1 = spec1);
|
output_byte(FDCS->spec1 = spec1);
|
output_byte(FDCS->spec2 = spec2);
|
output_byte(FDCS->spec2 = spec2);
|
}
|
}
|
} /* fdc_specify */
|
} /* fdc_specify */
|
|
|
/* Set the FDC's data transfer rate on behalf of the specified drive.
|
/* 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
|
* NOTE: with 82072/82077 FDCs, changing the data rate requires a reissue
|
* of the specify command (i.e. using the fdc_specify function).
|
* of the specify command (i.e. using the fdc_specify function).
|
*/
|
*/
|
static int fdc_dtr(void)
|
static int fdc_dtr(void)
|
{
|
{
|
/* If data rate not already set to desired value, set it. */
|
/* If data rate not already set to desired value, set it. */
|
if ((raw_cmd->rate & 3) == FDCS->dtr)
|
if ((raw_cmd->rate & 3) == FDCS->dtr)
|
return 0;
|
return 0;
|
|
|
/* Set dtr */
|
/* Set dtr */
|
fd_outb(raw_cmd->rate & 3, FD_DCR);
|
fd_outb(raw_cmd->rate & 3, FD_DCR);
|
|
|
/* TODO: some FDC/drive combinations (C&T 82C711 with TEAC 1.2MB)
|
/* TODO: some FDC/drive combinations (C&T 82C711 with TEAC 1.2MB)
|
* need a stabilization period of several milliseconds to be
|
* need a stabilization period of several milliseconds to be
|
* enforced after data rate changes before R/W operations.
|
* enforced after data rate changes before R/W operations.
|
* Pause 5 msec to avoid trouble. (Needs to be 2 jiffies)
|
* Pause 5 msec to avoid trouble. (Needs to be 2 jiffies)
|
*/
|
*/
|
FDCS->dtr = raw_cmd->rate & 3;
|
FDCS->dtr = raw_cmd->rate & 3;
|
return(wait_for_completion(jiffies+2*HZ/100,
|
return(wait_for_completion(jiffies+2*HZ/100,
|
(timeout_fn) floppy_ready));
|
(timeout_fn) floppy_ready));
|
} /* fdc_dtr */
|
} /* fdc_dtr */
|
|
|
static void tell_sector(void)
|
static void tell_sector(void)
|
{
|
{
|
printk(": track %d, head %d, sector %d, size %d",
|
printk(": track %d, head %d, sector %d, size %d",
|
R_TRACK, R_HEAD, R_SECTOR, R_SIZECODE);
|
R_TRACK, R_HEAD, R_SECTOR, R_SIZECODE);
|
} /* tell_sector */
|
} /* tell_sector */
|
|
|
|
|
/*
|
/*
|
* OK, this error interpreting routine is called after a
|
* OK, this error interpreting routine is called after a
|
* DMA read/write has succeeded
|
* DMA read/write has succeeded
|
* or failed, so we check the results, and copy any buffers.
|
* or failed, so we check the results, and copy any buffers.
|
* hhb: Added better error reporting.
|
* hhb: Added better error reporting.
|
* ak: Made this into a separate routine.
|
* ak: Made this into a separate routine.
|
*/
|
*/
|
static int interpret_errors(void)
|
static int interpret_errors(void)
|
{
|
{
|
char bad;
|
char bad;
|
int res = get_dma_residue(FLOPPY_DMA);
|
int res = get_dma_residue(FLOPPY_DMA);
|
if(res) {printk("\n-- DMA residue (%d)",res); tell_sector(); printk("\n");}
|
if(res) {printk("\n-- DMA residue (%d)",res); tell_sector(); printk("\n");}
|
|
|
if (inr!=7) {
|
if (inr!=7) {
|
DPRINT("-- FDC reply error");
|
DPRINT("-- FDC reply error");
|
FDCS->reset = 1;
|
FDCS->reset = 1;
|
return 1;
|
return 1;
|
}
|
}
|
|
|
/* check IC to find cause of interrupt */
|
/* check IC to find cause of interrupt */
|
switch (ST0 & ST0_INTR) {
|
switch (ST0 & ST0_INTR) {
|
case 0x40: /* error occurred during command execution */
|
case 0x40: /* error occurred during command execution */
|
if (ST1 & ST1_EOC)
|
if (ST1 & ST1_EOC)
|
return 0; /* occurs with pseudo-DMA */
|
return 0; /* occurs with pseudo-DMA */
|
bad = 1;
|
bad = 1;
|
if (ST1 & ST1_WP) {
|
if (ST1 & ST1_WP) {
|
DPRINT("Drive is write protected\n");
|
DPRINT("Drive is write protected\n");
|
CLEARF(FD_DISK_WRITABLE);
|
CLEARF(FD_DISK_WRITABLE);
|
cont->done(0);
|
cont->done(0);
|
bad = 2;
|
bad = 2;
|
} else if (ST1 & ST1_ND) {
|
} else if (ST1 & ST1_ND) {
|
SETF(FD_NEED_TWADDLE);
|
SETF(FD_NEED_TWADDLE);
|
} else if (ST1 & ST1_OR) {
|
} else if (ST1 & ST1_OR) {
|
if (DP->flags & FTD_MSG)
|
if (DP->flags & FTD_MSG)
|
DPRINT("Over/Underrun - retrying\n");
|
DPRINT("Over/Underrun - retrying\n");
|
bad = 0;
|
bad = 0;
|
}else if (*errors >= DP->max_errors.reporting){
|
}else if (*errors >= DP->max_errors.reporting){
|
DPRINT("");
|
DPRINT("");
|
if (ST0 & ST0_ECE) {
|
if (ST0 & ST0_ECE) {
|
printk("Recalibrate failed!");
|
printk("Recalibrate failed!");
|
} else if (ST2 & ST2_CRC) {
|
} else if (ST2 & ST2_CRC) {
|
printk("data CRC error");
|
printk("data CRC error");
|
tell_sector();
|
tell_sector();
|
} else if (ST1 & ST1_CRC) {
|
} else if (ST1 & ST1_CRC) {
|
printk("CRC error");
|
printk("CRC error");
|
tell_sector();
|
tell_sector();
|
} else if ((ST1 & (ST1_MAM|ST1_ND)) || (ST2 & ST2_MAM)) {
|
} else if ((ST1 & (ST1_MAM|ST1_ND)) || (ST2 & ST2_MAM)) {
|
if (!probing) {
|
if (!probing) {
|
printk("sector not found");
|
printk("sector not found");
|
tell_sector();
|
tell_sector();
|
} else
|
} else
|
printk("probe failed...");
|
printk("probe failed...");
|
} else if (ST2 & ST2_WC) { /* seek error */
|
} else if (ST2 & ST2_WC) { /* seek error */
|
printk("wrong cylinder");
|
printk("wrong cylinder");
|
} else if (ST2 & ST2_BC) { /* cylinder marked as bad */
|
} else if (ST2 & ST2_BC) { /* cylinder marked as bad */
|
printk("bad cylinder");
|
printk("bad cylinder");
|
} else {
|
} else {
|
printk("unknown error. ST[0..2] are: 0x%x 0x%x 0x%x", ST0, ST1, ST2);
|
printk("unknown error. ST[0..2] are: 0x%x 0x%x 0x%x", ST0, ST1, ST2);
|
tell_sector();
|
tell_sector();
|
}
|
}
|
printk("\n");
|
printk("\n");
|
|
|
}
|
}
|
if (ST2 & ST2_WC || ST2 & ST2_BC)
|
if (ST2 & ST2_WC || ST2 & ST2_BC)
|
/* wrong cylinder => recal */
|
/* wrong cylinder => recal */
|
DRS->track = NEED_2_RECAL;
|
DRS->track = NEED_2_RECAL;
|
return bad;
|
return bad;
|
case 0x80: /* invalid command given */
|
case 0x80: /* invalid command given */
|
DPRINT("Invalid FDC command given!\n");
|
DPRINT("Invalid FDC command given!\n");
|
cont->done(0);
|
cont->done(0);
|
return 2;
|
return 2;
|
case 0xc0:
|
case 0xc0:
|
DPRINT("Abnormal termination caused by polling\n");
|
DPRINT("Abnormal termination caused by polling\n");
|
cont->error();
|
cont->error();
|
return 2;
|
return 2;
|
default: /* (0) Normal command termination */
|
default: /* (0) Normal command termination */
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
* This routine is called when everything should be correctly set up
|
* This routine is called when everything should be correctly set up
|
* for the transfer (i.e. floppy motor is on, the correct floppy is
|
* for the transfer (i.e. floppy motor is on, the correct floppy is
|
* selected, and the head is sitting on the right track).
|
* selected, and the head is sitting on the right track).
|
*/
|
*/
|
static void setup_rw_floppy(void)
|
static void setup_rw_floppy(void)
|
{
|
{
|
int i,ready_date,r, flags,dflags;
|
int i,ready_date,r, flags,dflags;
|
timeout_fn function;
|
timeout_fn function;
|
|
|
flags = raw_cmd->flags;
|
flags = raw_cmd->flags;
|
if (flags & (FD_RAW_READ | FD_RAW_WRITE))
|
if (flags & (FD_RAW_READ | FD_RAW_WRITE))
|
flags |= FD_RAW_INTR;
|
flags |= FD_RAW_INTR;
|
|
|
if ((flags & FD_RAW_SPIN) && !(flags & FD_RAW_NO_MOTOR)){
|
if ((flags & FD_RAW_SPIN) && !(flags & FD_RAW_NO_MOTOR)){
|
ready_date = DRS->spinup_date + DP->spinup;
|
ready_date = DRS->spinup_date + DP->spinup;
|
/* If spinup will take a long time, rerun scandrives
|
/* If spinup will take a long time, rerun scandrives
|
* again just before spinup completion. Beware that
|
* again just before spinup completion. Beware that
|
* after scandrives, we must again wait for selection.
|
* after scandrives, we must again wait for selection.
|
*/
|
*/
|
if ((signed) (ready_date - jiffies) > DP->select_delay){
|
if ((signed) (ready_date - jiffies) > DP->select_delay){
|
ready_date -= DP->select_delay;
|
ready_date -= DP->select_delay;
|
function = (timeout_fn) floppy_start;
|
function = (timeout_fn) floppy_start;
|
} else
|
} else
|
function = (timeout_fn) setup_rw_floppy;
|
function = (timeout_fn) setup_rw_floppy;
|
|
|
/* wait until the floppy is spinning fast enough */
|
/* wait until the floppy is spinning fast enough */
|
if (wait_for_completion(ready_date,function))
|
if (wait_for_completion(ready_date,function))
|
return;
|
return;
|
}
|
}
|
dflags = DRS->flags;
|
dflags = DRS->flags;
|
|
|
if ((flags & FD_RAW_READ) || (flags & FD_RAW_WRITE))
|
if ((flags & FD_RAW_READ) || (flags & FD_RAW_WRITE))
|
setup_DMA();
|
setup_DMA();
|
|
|
if (flags & FD_RAW_INTR)
|
if (flags & FD_RAW_INTR)
|
SET_INTR(main_command_interrupt);
|
SET_INTR(main_command_interrupt);
|
|
|
r=0;
|
r=0;
|
for (i=0; i< raw_cmd->cmd_count; i++)
|
for (i=0; i< raw_cmd->cmd_count; i++)
|
r|=output_byte(raw_cmd->cmd[i]);
|
r|=output_byte(raw_cmd->cmd[i]);
|
|
|
#ifdef DEBUGT
|
#ifdef DEBUGT
|
debugt("rw_command: ");
|
debugt("rw_command: ");
|
#endif
|
#endif
|
if (r){
|
if (r){
|
cont->error();
|
cont->error();
|
reset_fdc();
|
reset_fdc();
|
return;
|
return;
|
}
|
}
|
|
|
if (!(flags & FD_RAW_INTR)){
|
if (!(flags & FD_RAW_INTR)){
|
inr = result();
|
inr = result();
|
cont->interrupt();
|
cont->interrupt();
|
} else if (flags & FD_RAW_NEED_DISK)
|
} else if (flags & FD_RAW_NEED_DISK)
|
fd_watchdog();
|
fd_watchdog();
|
}
|
}
|
|
|
static int blind_seek;
|
static int blind_seek;
|
|
|
/*
|
/*
|
* This is the routine called after every seek (or recalibrate) interrupt
|
* This is the routine called after every seek (or recalibrate) interrupt
|
* from the floppy controller.
|
* from the floppy controller.
|
*/
|
*/
|
static void seek_interrupt(void)
|
static void seek_interrupt(void)
|
{
|
{
|
#ifdef DEBUGT
|
#ifdef DEBUGT
|
debugt("seek interrupt:");
|
debugt("seek interrupt:");
|
#endif
|
#endif
|
if (inr != 2 || (ST0 & 0xF8) != 0x20) {
|
if (inr != 2 || (ST0 & 0xF8) != 0x20) {
|
DPRINT("seek failed\n");
|
DPRINT("seek failed\n");
|
DRS->track = NEED_2_RECAL;
|
DRS->track = NEED_2_RECAL;
|
cont->error();
|
cont->error();
|
cont->redo();
|
cont->redo();
|
return;
|
return;
|
}
|
}
|
if (DRS->track >= 0 && DRS->track != ST1 && !blind_seek){
|
if (DRS->track >= 0 && DRS->track != ST1 && !blind_seek){
|
#ifdef DCL_DEBUG
|
#ifdef DCL_DEBUG
|
if (DP->flags & FD_DEBUG){
|
if (DP->flags & FD_DEBUG){
|
DPRINT("clearing NEWCHANGE flag because of effective seek\n");
|
DPRINT("clearing NEWCHANGE flag because of effective seek\n");
|
DPRINT("jiffies=%ld\n", jiffies);
|
DPRINT("jiffies=%ld\n", jiffies);
|
}
|
}
|
#endif
|
#endif
|
CLEARF(FD_DISK_NEWCHANGE); /* effective seek */
|
CLEARF(FD_DISK_NEWCHANGE); /* effective seek */
|
DRS->select_date = jiffies;
|
DRS->select_date = jiffies;
|
}
|
}
|
DRS->track = ST1;
|
DRS->track = ST1;
|
floppy_ready();
|
floppy_ready();
|
}
|
}
|
|
|
static void check_wp(void)
|
static void check_wp(void)
|
{
|
{
|
if (TESTF(FD_VERIFY)) {
|
if (TESTF(FD_VERIFY)) {
|
/* check write protection */
|
/* check write protection */
|
output_byte(FD_GETSTATUS);
|
output_byte(FD_GETSTATUS);
|
output_byte(UNIT(current_drive));
|
output_byte(UNIT(current_drive));
|
if (result() != 1){
|
if (result() != 1){
|
FDCS->reset = 1;
|
FDCS->reset = 1;
|
return;
|
return;
|
}
|
}
|
CLEARF(FD_VERIFY);
|
CLEARF(FD_VERIFY);
|
CLEARF(FD_NEED_TWADDLE);
|
CLEARF(FD_NEED_TWADDLE);
|
#ifdef DCL_DEBUG
|
#ifdef DCL_DEBUG
|
if (DP->flags & FD_DEBUG){
|
if (DP->flags & FD_DEBUG){
|
DPRINT("checking whether disk is write protected\n");
|
DPRINT("checking whether disk is write protected\n");
|
DPRINT("wp=%x\n",ST3 & 0x40);
|
DPRINT("wp=%x\n",ST3 & 0x40);
|
}
|
}
|
#endif
|
#endif
|
if (!(ST3 & 0x40))
|
if (!(ST3 & 0x40))
|
SETF(FD_DISK_WRITABLE);
|
SETF(FD_DISK_WRITABLE);
|
else
|
else
|
CLEARF(FD_DISK_WRITABLE);
|
CLEARF(FD_DISK_WRITABLE);
|
}
|
}
|
}
|
}
|
|
|
static void seek_floppy(void)
|
static void seek_floppy(void)
|
{
|
{
|
int track;
|
int track;
|
|
|
blind_seek=0;
|
blind_seek=0;
|
|
|
#ifdef DCL_DEBUG
|
#ifdef DCL_DEBUG
|
if (DP->flags & FD_DEBUG){
|
if (DP->flags & FD_DEBUG){
|
DPRINT("calling disk change from seek\n");
|
DPRINT("calling disk change from seek\n");
|
}
|
}
|
#endif
|
#endif
|
|
|
if (!TESTF(FD_DISK_NEWCHANGE) &&
|
if (!TESTF(FD_DISK_NEWCHANGE) &&
|
disk_change(current_drive) &&
|
disk_change(current_drive) &&
|
(raw_cmd->flags & FD_RAW_NEED_DISK)){
|
(raw_cmd->flags & FD_RAW_NEED_DISK)){
|
/* the media changed flag should be cleared after the seek.
|
/* the media changed flag should be cleared after the seek.
|
* If it isn't, this means that there is really no disk in
|
* If it isn't, this means that there is really no disk in
|
* the drive.
|
* the drive.
|
*/
|
*/
|
SETF(FD_DISK_CHANGED);
|
SETF(FD_DISK_CHANGED);
|
cont->done(0);
|
cont->done(0);
|
cont->redo();
|
cont->redo();
|
return;
|
return;
|
}
|
}
|
if (DRS->track <= NEED_1_RECAL){
|
if (DRS->track <= NEED_1_RECAL){
|
recalibrate_floppy();
|
recalibrate_floppy();
|
return;
|
return;
|
} else if (TESTF(FD_DISK_NEWCHANGE) &&
|
} else if (TESTF(FD_DISK_NEWCHANGE) &&
|
(raw_cmd->flags & FD_RAW_NEED_DISK) &&
|
(raw_cmd->flags & FD_RAW_NEED_DISK) &&
|
(DRS->track <= NO_TRACK || DRS->track == raw_cmd->track)) {
|
(DRS->track <= NO_TRACK || DRS->track == raw_cmd->track)) {
|
/* we seek to clear the media-changed condition. Does anybody
|
/* we seek to clear the media-changed condition. Does anybody
|
* know a more elegant way, which works on all drives? */
|
* know a more elegant way, which works on all drives? */
|
if (raw_cmd->track)
|
if (raw_cmd->track)
|
track = raw_cmd->track - 1;
|
track = raw_cmd->track - 1;
|
else {
|
else {
|
if (DP->flags & FD_SILENT_DCL_CLEAR){
|
if (DP->flags & FD_SILENT_DCL_CLEAR){
|
set_dor(fdc, ~(0x10 << UNIT(current_drive)), 0);
|
set_dor(fdc, ~(0x10 << UNIT(current_drive)), 0);
|
blind_seek = 1;
|
blind_seek = 1;
|
raw_cmd->flags |= FD_RAW_NEED_SEEK;
|
raw_cmd->flags |= FD_RAW_NEED_SEEK;
|
}
|
}
|
track = 1;
|
track = 1;
|
}
|
}
|
} else {
|
} else {
|
check_wp();
|
check_wp();
|
if (raw_cmd->track != DRS->track &&
|
if (raw_cmd->track != DRS->track &&
|
(raw_cmd->flags & FD_RAW_NEED_SEEK))
|
(raw_cmd->flags & FD_RAW_NEED_SEEK))
|
track = raw_cmd->track;
|
track = raw_cmd->track;
|
else {
|
else {
|
setup_rw_floppy();
|
setup_rw_floppy();
|
return;
|
return;
|
}
|
}
|
}
|
}
|
|
|
SET_INTR(seek_interrupt);
|
SET_INTR(seek_interrupt);
|
output_byte(FD_SEEK);
|
output_byte(FD_SEEK);
|
output_byte(UNIT(current_drive));
|
output_byte(UNIT(current_drive));
|
LAST_OUT(track);
|
LAST_OUT(track);
|
#ifdef DEBUGT
|
#ifdef DEBUGT
|
debugt("seek command:");
|
debugt("seek command:");
|
#endif
|
#endif
|
}
|
}
|
|
|
static void recal_interrupt(void)
|
static void recal_interrupt(void)
|
{
|
{
|
#ifdef DEBUGT
|
#ifdef DEBUGT
|
debugt("recal interrupt:");
|
debugt("recal interrupt:");
|
#endif
|
#endif
|
if (inr !=2)
|
if (inr !=2)
|
FDCS->reset = 1;
|
FDCS->reset = 1;
|
else if (ST0 & ST0_ECE) {
|
else if (ST0 & ST0_ECE) {
|
switch(DRS->track){
|
switch(DRS->track){
|
case NEED_1_RECAL:
|
case NEED_1_RECAL:
|
#ifdef DEBUGT
|
#ifdef DEBUGT
|
debugt("recal interrupt need 1 recal:");
|
debugt("recal interrupt need 1 recal:");
|
#endif
|
#endif
|
/* after a second recalibrate, we still haven't
|
/* after a second recalibrate, we still haven't
|
* reached track 0. Probably no drive. Raise an
|
* reached track 0. Probably no drive. Raise an
|
* error, as failing immediately might upset
|
* error, as failing immediately might upset
|
* computers possessed by the Devil :-) */
|
* computers possessed by the Devil :-) */
|
cont->error();
|
cont->error();
|
cont->redo();
|
cont->redo();
|
return;
|
return;
|
case NEED_2_RECAL:
|
case NEED_2_RECAL:
|
#ifdef DEBUGT
|
#ifdef DEBUGT
|
debugt("recal interrupt need 2 recal:");
|
debugt("recal interrupt need 2 recal:");
|
#endif
|
#endif
|
/* If we already did a recalibrate,
|
/* If we already did a recalibrate,
|
* and we are not at track 0, this
|
* and we are not at track 0, this
|
* means we have moved. (The only way
|
* means we have moved. (The only way
|
* not to move at recalibration is to
|
* not to move at recalibration is to
|
* be already at track 0.) Clear the
|
* be already at track 0.) Clear the
|
* new change flag */
|
* new change flag */
|
#ifdef DCL_DEBUG
|
#ifdef DCL_DEBUG
|
if (DP->flags & FD_DEBUG){
|
if (DP->flags & FD_DEBUG){
|
DPRINT("clearing NEWCHANGE flag because of second recalibrate\n");
|
DPRINT("clearing NEWCHANGE flag because of second recalibrate\n");
|
}
|
}
|
#endif
|
#endif
|
|
|
CLEARF(FD_DISK_NEWCHANGE);
|
CLEARF(FD_DISK_NEWCHANGE);
|
DRS->select_date = jiffies;
|
DRS->select_date = jiffies;
|
/* fall through */
|
/* fall through */
|
default:
|
default:
|
#ifdef DEBUGT
|
#ifdef DEBUGT
|
debugt("recal interrupt default:");
|
debugt("recal interrupt default:");
|
#endif
|
#endif
|
/* Recalibrate moves the head by at
|
/* Recalibrate moves the head by at
|
* most 80 steps. If after one
|
* most 80 steps. If after one
|
* recalibrate we don't have reached
|
* recalibrate we don't have reached
|
* track 0, this might mean that we
|
* track 0, this might mean that we
|
* started beyond track 80. Try
|
* started beyond track 80. Try
|
* again. */
|
* again. */
|
DRS->track = NEED_1_RECAL;
|
DRS->track = NEED_1_RECAL;
|
break;
|
break;
|
}
|
}
|
} else
|
} else
|
DRS->track = ST1;
|
DRS->track = ST1;
|
floppy_ready();
|
floppy_ready();
|
}
|
}
|
|
|
static void print_result(char *message, int inr)
|
static void print_result(char *message, int inr)
|
{
|
{
|
int i;
|
int i;
|
|
|
DPRINT("%s ", message);
|
DPRINT("%s ", message);
|
if (inr >= 0)
|
if (inr >= 0)
|
for (i=0; i<inr; i++)
|
for (i=0; i<inr; i++)
|
printk("repl[%d]=%x ", i, reply_buffer[i]);
|
printk("repl[%d]=%x ", i, reply_buffer[i]);
|
printk("\n");
|
printk("\n");
|
}
|
}
|
|
|
/* interrupt handler */
|
/* interrupt handler */
|
void floppy_interrupt(int irq, void *dev_id, struct pt_regs * regs)
|
void floppy_interrupt(int irq, void *dev_id, struct pt_regs * regs)
|
{
|
{
|
void (*handler)(void) = DEVICE_INTR;
|
void (*handler)(void) = DEVICE_INTR;
|
int do_print;
|
int do_print;
|
|
|
lasthandler = handler;
|
lasthandler = handler;
|
interruptjiffies = jiffies;
|
interruptjiffies = jiffies;
|
|
|
fd_disable_dma();
|
fd_disable_dma();
|
floppy_enable_hlt();
|
floppy_enable_hlt();
|
CLEAR_INTR;
|
CLEAR_INTR;
|
if (fdc >= N_FDC || FDCS->address == -1){
|
if (fdc >= N_FDC || FDCS->address == -1){
|
/* we don't even know which FDC is the culprit */
|
/* we don't even know which FDC is the culprit */
|
printk("DOR0=%x\n", (unsigned int)fdc_state[0].dor);
|
printk("DOR0=%x\n", (unsigned int)fdc_state[0].dor);
|
printk("floppy interrupt on bizarre fdc %d\n",fdc);
|
printk("floppy interrupt on bizarre fdc %d\n",fdc);
|
printk("handler=%p\n", handler);
|
printk("handler=%p\n", handler);
|
is_alive("bizarre fdc");
|
is_alive("bizarre fdc");
|
return;
|
return;
|
}
|
}
|
|
|
FDCS->reset = 0;
|
FDCS->reset = 0;
|
/* We have to clear the reset flag here, because apparently on boxes
|
/* We have to clear the reset flag here, because apparently on boxes
|
* with level triggered interrupts (PS/2, Sparc, ...), it is needed to
|
* with level triggered interrupts (PS/2, Sparc, ...), it is needed to
|
* emit SENSEI's to clear the interrupt line. And FDCS->reset blocks the
|
* emit SENSEI's to clear the interrupt line. And FDCS->reset blocks the
|
* emission of the SENSEI's.
|
* emission of the SENSEI's.
|
* It is OK to emit floppy commands because we are in an interrupt
|
* 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
|
* handler here, and thus we have to fear no interference of other
|
* activity.
|
* activity.
|
*/
|
*/
|
|
|
do_print = !handler && print_unex && !initialising;
|
do_print = !handler && print_unex && !initialising;
|
|
|
inr = result();
|
inr = result();
|
if(do_print)
|
if(do_print)
|
print_result("unexpected interrupt", inr);
|
print_result("unexpected interrupt", inr);
|
if (inr == 0){
|
if (inr == 0){
|
do {
|
do {
|
output_byte(FD_SENSEI);
|
output_byte(FD_SENSEI);
|
inr = result();
|
inr = result();
|
if(do_print)
|
if(do_print)
|
print_result("sensei", inr);
|
print_result("sensei", inr);
|
} while ((ST0 & 0x83) != UNIT(current_drive) && inr == 2);
|
} while ((ST0 & 0x83) != UNIT(current_drive) && inr == 2);
|
}
|
}
|
if (handler) {
|
if (handler) {
|
if(intr_count >= 2) {
|
if(intr_count >= 2) {
|
/* expected interrupt */
|
/* expected interrupt */
|
floppy_tq.routine = (void *)(void *) handler;
|
floppy_tq.routine = (void *)(void *) handler;
|
queue_task_irq(&floppy_tq, &tq_immediate);
|
queue_task_irq(&floppy_tq, &tq_immediate);
|
mark_bh(IMMEDIATE_BH);
|
mark_bh(IMMEDIATE_BH);
|
} else
|
} else
|
handler();
|
handler();
|
} else
|
} else
|
FDCS->reset = 1;
|
FDCS->reset = 1;
|
is_alive("normal interrupt end");
|
is_alive("normal interrupt end");
|
}
|
}
|
|
|
static void recalibrate_floppy(void)
|
static void recalibrate_floppy(void)
|
{
|
{
|
#ifdef DEBUGT
|
#ifdef DEBUGT
|
debugt("recalibrate floppy:");
|
debugt("recalibrate floppy:");
|
#endif
|
#endif
|
SET_INTR(recal_interrupt);
|
SET_INTR(recal_interrupt);
|
output_byte(FD_RECALIBRATE);
|
output_byte(FD_RECALIBRATE);
|
LAST_OUT(UNIT(current_drive));
|
LAST_OUT(UNIT(current_drive));
|
}
|
}
|
|
|
/*
|
/*
|
* Must do 4 FD_SENSEIs after reset because of ``drive polling''.
|
* Must do 4 FD_SENSEIs after reset because of ``drive polling''.
|
*/
|
*/
|
static void reset_interrupt(void)
|
static void reset_interrupt(void)
|
{
|
{
|
#ifdef DEBUGT
|
#ifdef DEBUGT
|
debugt("reset interrupt:");
|
debugt("reset interrupt:");
|
#endif
|
#endif
|
result(); /* get the status ready for set_fdc */
|
result(); /* get the status ready for set_fdc */
|
if (FDCS->reset) {
|
if (FDCS->reset) {
|
printk("reset set in interrupt, calling %p\n", cont->error);
|
printk("reset set in interrupt, calling %p\n", cont->error);
|
cont->error(); /* a reset just after a reset. BAD! */
|
cont->error(); /* a reset just after a reset. BAD! */
|
}
|
}
|
cont->redo();
|
cont->redo();
|
}
|
}
|
|
|
/*
|
/*
|
* reset is done by pulling bit 2 of DOR low for a while (old FDCs),
|
* 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)
|
* or by setting the self clearing bit 7 of STATUS (newer FDCs)
|
*/
|
*/
|
static void reset_fdc(void)
|
static void reset_fdc(void)
|
{
|
{
|
SET_INTR(reset_interrupt);
|
SET_INTR(reset_interrupt);
|
FDCS->reset = 0;
|
FDCS->reset = 0;
|
reset_fdc_info(0);
|
reset_fdc_info(0);
|
|
|
/* Pseudo-DMA may intercept 'reset finished' interrupt. */
|
/* Pseudo-DMA may intercept 'reset finished' interrupt. */
|
/* Irrelevant for systems with true DMA (i386). */
|
/* Irrelevant for systems with true DMA (i386). */
|
fd_disable_dma();
|
fd_disable_dma();
|
|
|
if (FDCS->version >= FDC_82072A)
|
if (FDCS->version >= FDC_82072A)
|
fd_outb(0x80 | (FDCS->dtr &3), FD_STATUS);
|
fd_outb(0x80 | (FDCS->dtr &3), FD_STATUS);
|
else {
|
else {
|
fd_setdor(FDCS->dor & ~0x04);
|
fd_setdor(FDCS->dor & ~0x04);
|
udelay(FD_RESET_DELAY);
|
udelay(FD_RESET_DELAY);
|
fd_setdor(FDCS->dor);
|
fd_setdor(FDCS->dor);
|
}
|
}
|
}
|
}
|
|
|
void show_floppy(void)
|
void show_floppy(void)
|
{
|
{
|
int i;
|
int i;
|
|
|
printk("\n");
|
printk("\n");
|
printk("floppy driver state\n");
|
printk("floppy driver state\n");
|
printk("-------------------\n");
|
printk("-------------------\n");
|
printk("now=%ld last interrupt=%d last called handler=%p\n",
|
printk("now=%ld last interrupt=%d last called handler=%p\n",
|
jiffies, interruptjiffies, lasthandler);
|
jiffies, interruptjiffies, lasthandler);
|
|
|
|
|
#ifdef FLOPPY_SANITY_CHECK
|
#ifdef FLOPPY_SANITY_CHECK
|
printk("timeout_message=%s\n", timeout_message);
|
printk("timeout_message=%s\n", timeout_message);
|
printk("last output bytes:\n");
|
printk("last output bytes:\n");
|
for (i=0; i < OLOGSIZE; i++)
|
for (i=0; i < OLOGSIZE; i++)
|
printk("%2x %2x %ld\n",
|
printk("%2x %2x %ld\n",
|
output_log[(i+output_log_pos) % OLOGSIZE].data,
|
output_log[(i+output_log_pos) % OLOGSIZE].data,
|
output_log[(i+output_log_pos) % OLOGSIZE].status,
|
output_log[(i+output_log_pos) % OLOGSIZE].status,
|
output_log[(i+output_log_pos) % OLOGSIZE].jiffies);
|
output_log[(i+output_log_pos) % OLOGSIZE].jiffies);
|
printk("last result at %d\n", resultjiffies);
|
printk("last result at %d\n", resultjiffies);
|
printk("last redo_fd_request at %d\n", lastredo);
|
printk("last redo_fd_request at %d\n", lastredo);
|
for (i=0; i<resultsize; i++){
|
for (i=0; i<resultsize; i++){
|
printk("%2x ", reply_buffer[i]);
|
printk("%2x ", reply_buffer[i]);
|
}
|
}
|
printk("\n");
|
printk("\n");
|
#endif
|
#endif
|
|
|
printk("status=%x\n", fd_inb(FD_STATUS));
|
printk("status=%x\n", fd_inb(FD_STATUS));
|
printk("fdc_busy=%d\n", fdc_busy);
|
printk("fdc_busy=%d\n", fdc_busy);
|
if (DEVICE_INTR)
|
if (DEVICE_INTR)
|
printk("DEVICE_INTR=%p\n", DEVICE_INTR);
|
printk("DEVICE_INTR=%p\n", DEVICE_INTR);
|
if (floppy_tq.sync)
|
if (floppy_tq.sync)
|
printk("floppy_tq.routine=%p\n", floppy_tq.routine);
|
printk("floppy_tq.routine=%p\n", floppy_tq.routine);
|
if (fd_timer.prev)
|
if (fd_timer.prev)
|
printk("fd_timer.function=%p\n", fd_timer.function);
|
printk("fd_timer.function=%p\n", fd_timer.function);
|
if (fd_timeout.prev){
|
if (fd_timeout.prev){
|
printk("timer_table=%p\n",fd_timeout.function);
|
printk("timer_table=%p\n",fd_timeout.function);
|
printk("expires=%ld\n",fd_timeout.expires-jiffies);
|
printk("expires=%ld\n",fd_timeout.expires-jiffies);
|
printk("now=%ld\n",jiffies);
|
printk("now=%ld\n",jiffies);
|
}
|
}
|
printk("cont=%p\n", cont);
|
printk("cont=%p\n", cont);
|
printk("CURRENT=%p\n", CURRENT);
|
printk("CURRENT=%p\n", CURRENT);
|
printk("command_status=%d\n", command_status);
|
printk("command_status=%d\n", command_status);
|
printk("\n");
|
printk("\n");
|
}
|
}
|
|
|
static void floppy_shutdown(void)
|
static void floppy_shutdown(void)
|
{
|
{
|
if (!initialising)
|
if (!initialising)
|
show_floppy();
|
show_floppy();
|
cancel_activity();
|
cancel_activity();
|
sti();
|
sti();
|
|
|
floppy_enable_hlt();
|
floppy_enable_hlt();
|
fd_disable_dma();
|
fd_disable_dma();
|
/* avoid dma going to a random drive after shutdown */
|
/* avoid dma going to a random drive after shutdown */
|
|
|
if (!initialising)
|
if (!initialising)
|
DPRINT("floppy timeout called\n");
|
DPRINT("floppy timeout called\n");
|
FDCS->reset = 1;
|
FDCS->reset = 1;
|
if (cont){
|
if (cont){
|
cont->done(0);
|
cont->done(0);
|
cont->redo(); /* this will recall reset when needed */
|
cont->redo(); /* this will recall reset when needed */
|
} else {
|
} else {
|
printk("no cont in shutdown!\n");
|
printk("no cont in shutdown!\n");
|
process_fd_request();
|
process_fd_request();
|
}
|
}
|
is_alive("floppy shutdown");
|
is_alive("floppy shutdown");
|
}
|
}
|
/*typedef void (*timeout_fn)(unsigned long);*/
|
/*typedef void (*timeout_fn)(unsigned long);*/
|
|
|
/* start motor, check media-changed condition and write protection */
|
/* start motor, check media-changed condition and write protection */
|
static int start_motor(void (*function)(void) )
|
static int start_motor(void (*function)(void) )
|
{
|
{
|
int mask, data;
|
int mask, data;
|
|
|
mask = 0xfc;
|
mask = 0xfc;
|
data = UNIT(current_drive);
|
data = UNIT(current_drive);
|
if (!(raw_cmd->flags & FD_RAW_NO_MOTOR)){
|
if (!(raw_cmd->flags & FD_RAW_NO_MOTOR)){
|
if (!(FDCS->dor & (0x10 << UNIT(current_drive)))){
|
if (!(FDCS->dor & (0x10 << UNIT(current_drive)))){
|
set_debugt();
|
set_debugt();
|
/* no read since this drive is running */
|
/* no read since this drive is running */
|
DRS->first_read_date = 0;
|
DRS->first_read_date = 0;
|
/* note motor start time if motor is not yet running */
|
/* note motor start time if motor is not yet running */
|
DRS->spinup_date = jiffies;
|
DRS->spinup_date = jiffies;
|
data |= (0x10 << UNIT(current_drive));
|
data |= (0x10 << UNIT(current_drive));
|
}
|
}
|
} else
|
} else
|
if (FDCS->dor & (0x10 << UNIT(current_drive)))
|
if (FDCS->dor & (0x10 << UNIT(current_drive)))
|
mask &= ~(0x10 << UNIT(current_drive));
|
mask &= ~(0x10 << UNIT(current_drive));
|
|
|
/* starts motor and selects floppy */
|
/* starts motor and selects floppy */
|
del_timer(motor_off_timer + current_drive);
|
del_timer(motor_off_timer + current_drive);
|
set_dor(fdc, mask, data);
|
set_dor(fdc, mask, data);
|
|
|
/* wait_for_completion also schedules reset if needed. */
|
/* wait_for_completion also schedules reset if needed. */
|
return(wait_for_completion(DRS->select_date+DP->select_delay,
|
return(wait_for_completion(DRS->select_date+DP->select_delay,
|
(timeout_fn) function));
|
(timeout_fn) function));
|
}
|
}
|
|
|
static void floppy_ready(void)
|
static void floppy_ready(void)
|
{
|
{
|
CHECK_RESET;
|
CHECK_RESET;
|
if (start_motor(floppy_ready)) return;
|
if (start_motor(floppy_ready)) return;
|
if (fdc_dtr()) return;
|
if (fdc_dtr()) return;
|
|
|
#ifdef DCL_DEBUG
|
#ifdef DCL_DEBUG
|
if (DP->flags & FD_DEBUG){
|
if (DP->flags & FD_DEBUG){
|
DPRINT("calling disk change from floppy_ready\n");
|
DPRINT("calling disk change from floppy_ready\n");
|
}
|
}
|
#endif
|
#endif
|
|
|
if (!(raw_cmd->flags & FD_RAW_NO_MOTOR) &&
|
if (!(raw_cmd->flags & FD_RAW_NO_MOTOR) &&
|
disk_change(current_drive) &&
|
disk_change(current_drive) &&
|
!DP->select_delay)
|
!DP->select_delay)
|
twaddle(); /* this clears the dcl on certain drive/controller
|
twaddle(); /* this clears the dcl on certain drive/controller
|
* combinations */
|
* combinations */
|
|
|
if (raw_cmd->flags & (FD_RAW_NEED_SEEK | FD_RAW_NEED_DISK)){
|
if (raw_cmd->flags & (FD_RAW_NEED_SEEK | FD_RAW_NEED_DISK)){
|
perpendicular_mode();
|
perpendicular_mode();
|
fdc_specify(); /* must be done here because of hut, hlt ... */
|
fdc_specify(); /* must be done here because of hut, hlt ... */
|
seek_floppy();
|
seek_floppy();
|
} else
|
} else
|
setup_rw_floppy();
|
setup_rw_floppy();
|
}
|
}
|
|
|
static void floppy_start(void)
|
static void floppy_start(void)
|
{
|
{
|
reschedule_timeout(CURRENTD, "floppy start", 0);
|
reschedule_timeout(CURRENTD, "floppy start", 0);
|
|
|
scandrives();
|
scandrives();
|
#ifdef DCL_DEBUG
|
#ifdef DCL_DEBUG
|
if (DP->flags & FD_DEBUG){
|
if (DP->flags & FD_DEBUG){
|
DPRINT("setting NEWCHANGE in floppy_start\n");
|
DPRINT("setting NEWCHANGE in floppy_start\n");
|
}
|
}
|
#endif
|
#endif
|
SETF(FD_DISK_NEWCHANGE);
|
SETF(FD_DISK_NEWCHANGE);
|
floppy_ready();
|
floppy_ready();
|
}
|
}
|
|
|
/*
|
/*
|
* ========================================================================
|
* ========================================================================
|
* here ends the bottom half. Exported routines are:
|
* here ends the bottom half. Exported routines are:
|
* floppy_start, floppy_off, floppy_ready, lock_fdc, unlock_fdc, set_fdc,
|
* floppy_start, floppy_off, floppy_ready, lock_fdc, unlock_fdc, set_fdc,
|
* start_motor, reset_fdc, reset_fdc_info, interpret_errors.
|
* start_motor, reset_fdc, reset_fdc_info, interpret_errors.
|
* Initialization also uses output_byte, result, set_dor, floppy_interrupt
|
* Initialization also uses output_byte, result, set_dor, floppy_interrupt
|
* and set_dor.
|
* and set_dor.
|
* ========================================================================
|
* ========================================================================
|
*/
|
*/
|
/*
|
/*
|
* General purpose continuations.
|
* General purpose continuations.
|
* ==============================
|
* ==============================
|
*/
|
*/
|
|
|
static void do_wakeup(void)
|
static void do_wakeup(void)
|
{
|
{
|
reschedule_timeout(MAXTIMEOUT, "do wakeup", 0);
|
reschedule_timeout(MAXTIMEOUT, "do wakeup", 0);
|
cont = 0;
|
cont = 0;
|
command_status += 2;
|
command_status += 2;
|
wake_up(&command_done);
|
wake_up(&command_done);
|
}
|
}
|
|
|
static struct cont_t wakeup_cont={
|
static struct cont_t wakeup_cont={
|
empty,
|
empty,
|
do_wakeup,
|
do_wakeup,
|
empty,
|
empty,
|
(done_f)empty
|
(done_f)empty
|
};
|
};
|
|
|
|
|
static struct cont_t intr_cont={
|
static struct cont_t intr_cont={
|
empty,
|
empty,
|
process_fd_request,
|
process_fd_request,
|
empty,
|
empty,
|
(done_f) empty
|
(done_f) empty
|
};
|
};
|
|
|
static int wait_til_done(void (*handler)(void), int interruptible)
|
static int wait_til_done(void (*handler)(void), int interruptible)
|
{
|
{
|
int ret;
|
int ret;
|
unsigned long flags;
|
unsigned long flags;
|
|
|
floppy_tq.routine = (void *)(void *) handler;
|
floppy_tq.routine = (void *)(void *) handler;
|
queue_task(&floppy_tq, &tq_immediate);
|
queue_task(&floppy_tq, &tq_immediate);
|
mark_bh(IMMEDIATE_BH);
|
mark_bh(IMMEDIATE_BH);
|
INT_OFF;
|
INT_OFF;
|
while(command_status < 2 && NO_SIGNAL){
|
while(command_status < 2 && NO_SIGNAL){
|
is_alive("wait_til_done");
|
is_alive("wait_til_done");
|
if (interruptible)
|
if (interruptible)
|
interruptible_sleep_on(&command_done);
|
interruptible_sleep_on(&command_done);
|
else
|
else
|
sleep_on(&command_done);
|
sleep_on(&command_done);
|
}
|
}
|
if (command_status < 2){
|
if (command_status < 2){
|
cancel_activity();
|
cancel_activity();
|
cont = &intr_cont;
|
cont = &intr_cont;
|
reset_fdc();
|
reset_fdc();
|
INT_ON;
|
INT_ON;
|
return -EINTR;
|
return -EINTR;
|
}
|
}
|
INT_ON;
|
INT_ON;
|
|
|
if (FDCS->reset)
|
if (FDCS->reset)
|
command_status = FD_COMMAND_ERROR;
|
command_status = FD_COMMAND_ERROR;
|
if (command_status == FD_COMMAND_OKAY)
|
if (command_status == FD_COMMAND_OKAY)
|
ret=0;
|
ret=0;
|
else
|
else
|
ret=-EIO;
|
ret=-EIO;
|
command_status = FD_COMMAND_NONE;
|
command_status = FD_COMMAND_NONE;
|
return ret;
|
return ret;
|
}
|
}
|
|
|
static void generic_done(int result)
|
static void generic_done(int result)
|
{
|
{
|
command_status = result;
|
command_status = result;
|
cont = &wakeup_cont;
|
cont = &wakeup_cont;
|
}
|
}
|
|
|
static void generic_success(void)
|
static void generic_success(void)
|
{
|
{
|
cont->done(1);
|
cont->done(1);
|
}
|
}
|
|
|
static void generic_failure(void)
|
static void generic_failure(void)
|
{
|
{
|
cont->done(0);
|
cont->done(0);
|
}
|
}
|
|
|
static void success_and_wakeup(void)
|
static void success_and_wakeup(void)
|
{
|
{
|
generic_success();
|
generic_success();
|
cont->redo();
|
cont->redo();
|
}
|
}
|
|
|
|
|
/*
|
/*
|
* formatting and rw support.
|
* formatting and rw support.
|
* ==========================
|
* ==========================
|
*/
|
*/
|
|
|
static int next_valid_format(void)
|
static int next_valid_format(void)
|
{
|
{
|
int probed_format;
|
int probed_format;
|
|
|
probed_format = DRS->probed_format;
|
probed_format = DRS->probed_format;
|
while(1){
|
while(1){
|
if (probed_format >= 8 ||
|
if (probed_format >= 8 ||
|
!DP->autodetect[probed_format]){
|
!DP->autodetect[probed_format]){
|
DRS->probed_format = 0;
|
DRS->probed_format = 0;
|
return 1;
|
return 1;
|
}
|
}
|
if (floppy_type[DP->autodetect[probed_format]].sect){
|
if (floppy_type[DP->autodetect[probed_format]].sect){
|
DRS->probed_format = probed_format;
|
DRS->probed_format = probed_format;
|
return 0;
|
return 0;
|
}
|
}
|
probed_format++;
|
probed_format++;
|
}
|
}
|
}
|
}
|
|
|
static void bad_flp_intr(void)
|
static void bad_flp_intr(void)
|
{
|
{
|
if (probing){
|
if (probing){
|
DRS->probed_format++;
|
DRS->probed_format++;
|
if (!next_valid_format())
|
if (!next_valid_format())
|
return;
|
return;
|
}
|
}
|
(*errors)++;
|
(*errors)++;
|
INFBOUND(DRWE->badness, *errors);
|
INFBOUND(DRWE->badness, *errors);
|
if (*errors > DP->max_errors.abort)
|
if (*errors > DP->max_errors.abort)
|
cont->done(0);
|
cont->done(0);
|
if (*errors > DP->max_errors.reset)
|
if (*errors > DP->max_errors.reset)
|
FDCS->reset = 1;
|
FDCS->reset = 1;
|
else if (*errors > DP->max_errors.recal)
|
else if (*errors > DP->max_errors.recal)
|
DRS->track = NEED_2_RECAL;
|
DRS->track = NEED_2_RECAL;
|
}
|
}
|
|
|
static void set_floppy(kdev_t device)
|
static void set_floppy(kdev_t device)
|
{
|
{
|
if (TYPE(device))
|
if (TYPE(device))
|
_floppy = TYPE(device) + floppy_type;
|
_floppy = TYPE(device) + floppy_type;
|
else
|
else
|
_floppy = current_type[ DRIVE(device) ];
|
_floppy = current_type[ DRIVE(device) ];
|
}
|
}
|
|
|
/*
|
/*
|
* formatting support.
|
* formatting support.
|
* ===================
|
* ===================
|
*/
|
*/
|
static void format_interrupt(void)
|
static void format_interrupt(void)
|
{
|
{
|
switch (interpret_errors()){
|
switch (interpret_errors()){
|
case 1:
|
case 1:
|
cont->error();
|
cont->error();
|
case 2:
|
case 2:
|
break;
|
break;
|
case 0:
|
case 0:
|
cont->done(1);
|
cont->done(1);
|
}
|
}
|
cont->redo();
|
cont->redo();
|
}
|
}
|
|
|
#define CODE2SIZE (ssize = ((1 << SIZECODE) + 3) >> 2)
|
#define CODE2SIZE (ssize = ((1 << SIZECODE) + 3) >> 2)
|
#define FM_MODE(x,y) ((y) & ~(((x)->rate & 0x80) >>1))
|
#define FM_MODE(x,y) ((y) & ~(((x)->rate & 0x80) >>1))
|
#define CT(x) ((x) | 0x40)
|
#define CT(x) ((x) | 0x40)
|
static void setup_format_params(int track)
|
static void setup_format_params(int track)
|
{
|
{
|
struct fparm {
|
struct fparm {
|
unsigned char track,head,sect,size;
|
unsigned char track,head,sect,size;
|
} *here = (struct fparm *)floppy_track_buffer;
|
} *here = (struct fparm *)floppy_track_buffer;
|
int il,n;
|
int il,n;
|
int count,head_shift,track_shift;
|
int count,head_shift,track_shift;
|
|
|
raw_cmd = &default_raw_cmd;
|
raw_cmd = &default_raw_cmd;
|
raw_cmd->track = track;
|
raw_cmd->track = track;
|
|
|
raw_cmd->flags = FD_RAW_WRITE | FD_RAW_INTR | FD_RAW_SPIN |
|
raw_cmd->flags = FD_RAW_WRITE | FD_RAW_INTR | FD_RAW_SPIN |
|
FD_RAW_NEED_DISK | FD_RAW_NEED_SEEK;
|
FD_RAW_NEED_DISK | FD_RAW_NEED_SEEK;
|
raw_cmd->rate = _floppy->rate & 0x43;
|
raw_cmd->rate = _floppy->rate & 0x43;
|
raw_cmd->cmd_count = NR_F;
|
raw_cmd->cmd_count = NR_F;
|
COMMAND = FM_MODE(_floppy,FD_FORMAT);
|
COMMAND = FM_MODE(_floppy,FD_FORMAT);
|
DR_SELECT = UNIT(current_drive) + PH_HEAD(_floppy,format_req.head);
|
DR_SELECT = UNIT(current_drive) + PH_HEAD(_floppy,format_req.head);
|
F_SIZECODE = FD_SIZECODE(_floppy);
|
F_SIZECODE = FD_SIZECODE(_floppy);
|
F_SECT_PER_TRACK = _floppy->sect << 2 >> F_SIZECODE;
|
F_SECT_PER_TRACK = _floppy->sect << 2 >> F_SIZECODE;
|
F_GAP = _floppy->fmt_gap;
|
F_GAP = _floppy->fmt_gap;
|
F_FILL = FD_FILL_BYTE;
|
F_FILL = FD_FILL_BYTE;
|
|
|
raw_cmd->kernel_data = floppy_track_buffer;
|
raw_cmd->kernel_data = floppy_track_buffer;
|
raw_cmd->length = 4 * F_SECT_PER_TRACK;
|
raw_cmd->length = 4 * F_SECT_PER_TRACK;
|
|
|
/* allow for about 30ms for data transport per track */
|
/* allow for about 30ms for data transport per track */
|
head_shift = (F_SECT_PER_TRACK + 5) / 6;
|
head_shift = (F_SECT_PER_TRACK + 5) / 6;
|
|
|
/* a ``cylinder'' is two tracks plus a little stepping time */
|
/* a ``cylinder'' is two tracks plus a little stepping time */
|
track_shift = 2 * head_shift + 3;
|
track_shift = 2 * head_shift + 3;
|
|
|
/* position of logical sector 1 on this track */
|
/* position of logical sector 1 on this track */
|
n = (track_shift * format_req.track + head_shift * format_req.head)
|
n = (track_shift * format_req.track + head_shift * format_req.head)
|
% F_SECT_PER_TRACK;
|
% F_SECT_PER_TRACK;
|
|
|
/* determine interleave */
|
/* determine interleave */
|
il = 1;
|
il = 1;
|
if (_floppy->fmt_gap < 0x22)
|
if (_floppy->fmt_gap < 0x22)
|
il++;
|
il++;
|
|
|
/* initialize field */
|
/* initialize field */
|
for (count = 0; count < F_SECT_PER_TRACK; ++count) {
|
for (count = 0; count < F_SECT_PER_TRACK; ++count) {
|
here[count].track = format_req.track;
|
here[count].track = format_req.track;
|
here[count].head = format_req.head;
|
here[count].head = format_req.head;
|
here[count].sect = 0;
|
here[count].sect = 0;
|
here[count].size = F_SIZECODE;
|
here[count].size = F_SIZECODE;
|
}
|
}
|
/* place logical sectors */
|
/* place logical sectors */
|
for (count = 1; count <= F_SECT_PER_TRACK; ++count) {
|
for (count = 1; count <= F_SECT_PER_TRACK; ++count) {
|
here[n].sect = count;
|
here[n].sect = count;
|
n = (n+il) % F_SECT_PER_TRACK;
|
n = (n+il) % F_SECT_PER_TRACK;
|
if (here[n].sect) { /* sector busy, find next free sector */
|
if (here[n].sect) { /* sector busy, find next free sector */
|
++n;
|
++n;
|
if (n>= F_SECT_PER_TRACK) {
|
if (n>= F_SECT_PER_TRACK) {
|
n-=F_SECT_PER_TRACK;
|
n-=F_SECT_PER_TRACK;
|
while (here[n].sect) ++n;
|
while (here[n].sect) ++n;
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
static void redo_format(void)
|
static void redo_format(void)
|
{
|
{
|
buffer_track = -1;
|
buffer_track = -1;
|
setup_format_params(format_req.track << STRETCH(_floppy));
|
setup_format_params(format_req.track << STRETCH(_floppy));
|
floppy_start();
|
floppy_start();
|
#ifdef DEBUGT
|
#ifdef DEBUGT
|
debugt("queue format request");
|
debugt("queue format request");
|
#endif
|
#endif
|
}
|
}
|
|
|
static struct cont_t format_cont={
|
static struct cont_t format_cont={
|
format_interrupt,
|
format_interrupt,
|
redo_format,
|
redo_format,
|
bad_flp_intr,
|
bad_flp_intr,
|
generic_done };
|
generic_done };
|
|
|
static int do_format(kdev_t device, struct format_descr *tmp_format_req)
|
static int do_format(kdev_t device, struct format_descr *tmp_format_req)
|
{
|
{
|
int ret;
|
int ret;
|
int drive=DRIVE(device);
|
int drive=DRIVE(device);
|
|
|
LOCK_FDC(drive,1);
|
LOCK_FDC(drive,1);
|
set_floppy(device);
|
set_floppy(device);
|
if (!_floppy ||
|
if (!_floppy ||
|
_floppy->track > DP->tracks ||
|
_floppy->track > DP->tracks ||
|
tmp_format_req->track >= _floppy->track ||
|
tmp_format_req->track >= _floppy->track ||
|
tmp_format_req->head >= _floppy->head ||
|
tmp_format_req->head >= _floppy->head ||
|
(_floppy->sect << 2) % (1 << FD_SIZECODE(_floppy)) ||
|
(_floppy->sect << 2) % (1 << FD_SIZECODE(_floppy)) ||
|
!_floppy->fmt_gap) {
|
!_floppy->fmt_gap) {
|
process_fd_request();
|
process_fd_request();
|
return -EINVAL;
|
return -EINVAL;
|
}
|
}
|
format_req = *tmp_format_req;
|
format_req = *tmp_format_req;
|
format_errors = 0;
|
format_errors = 0;
|
cont = &format_cont;
|
cont = &format_cont;
|
errors = &format_errors;
|
errors = &format_errors;
|
IWAIT(redo_format);
|
IWAIT(redo_format);
|
process_fd_request();
|
process_fd_request();
|
return ret;
|
return ret;
|
}
|
}
|
|
|
/*
|
/*
|
* Buffer read/write and support
|
* Buffer read/write and support
|
* =============================
|
* =============================
|
*/
|
*/
|
|
|
/* new request_done. Can handle physical sectors which are smaller than a
|
/* new request_done. Can handle physical sectors which are smaller than a
|
* logical buffer */
|
* logical buffer */
|
static void request_done(int uptodate)
|
static void request_done(int uptodate)
|
{
|
{
|
int block;
|
int block;
|
|
|
probing = 0;
|
probing = 0;
|
reschedule_timeout(MAXTIMEOUT, "request done %d", uptodate);
|
reschedule_timeout(MAXTIMEOUT, "request done %d", uptodate);
|
|
|
if (!CURRENT){
|
if (!CURRENT){
|
DPRINT("request list destroyed in floppy request done\n");
|
DPRINT("request list destroyed in floppy request done\n");
|
return;
|
return;
|
}
|
}
|
|
|
if (uptodate){
|
if (uptodate){
|
/* maintain values for invalidation on geometry
|
/* maintain values for invalidation on geometry
|
* change */
|
* change */
|
block = current_count_sectors + CURRENT->sector;
|
block = current_count_sectors + CURRENT->sector;
|
INFBOUND(DRS->maxblock, block);
|
INFBOUND(DRS->maxblock, block);
|
if (block > _floppy->sect)
|
if (block > _floppy->sect)
|
DRS->maxtrack = 1;
|
DRS->maxtrack = 1;
|
|
|
/* unlock chained buffers */
|
/* unlock chained buffers */
|
while (current_count_sectors && CURRENT &&
|
while (current_count_sectors && CURRENT &&
|
current_count_sectors >= CURRENT->current_nr_sectors){
|
current_count_sectors >= CURRENT->current_nr_sectors){
|
current_count_sectors -= CURRENT->current_nr_sectors;
|
current_count_sectors -= CURRENT->current_nr_sectors;
|
CURRENT->nr_sectors -= CURRENT->current_nr_sectors;
|
CURRENT->nr_sectors -= CURRENT->current_nr_sectors;
|
CURRENT->sector += CURRENT->current_nr_sectors;
|
CURRENT->sector += CURRENT->current_nr_sectors;
|
end_request(1);
|
end_request(1);
|
}
|
}
|
if (current_count_sectors && CURRENT){
|
if (current_count_sectors && CURRENT){
|
/* "unlock" last subsector */
|
/* "unlock" last subsector */
|
CURRENT->buffer += current_count_sectors <<9;
|
CURRENT->buffer += current_count_sectors <<9;
|
CURRENT->current_nr_sectors -= current_count_sectors;
|
CURRENT->current_nr_sectors -= current_count_sectors;
|
CURRENT->nr_sectors -= current_count_sectors;
|
CURRENT->nr_sectors -= current_count_sectors;
|
CURRENT->sector += current_count_sectors;
|
CURRENT->sector += current_count_sectors;
|
return;
|
return;
|
}
|
}
|
|
|
if (current_count_sectors && !CURRENT)
|
if (current_count_sectors && !CURRENT)
|
DPRINT("request list destroyed in floppy request done\n");
|
DPRINT("request list destroyed in floppy request done\n");
|
|
|
} else {
|
} else {
|
if (CURRENT->cmd == WRITE) {
|
if (CURRENT->cmd == WRITE) {
|
/* record write error information */
|
/* record write error information */
|
DRWE->write_errors++;
|
DRWE->write_errors++;
|
if (DRWE->write_errors == 1) {
|
if (DRWE->write_errors == 1) {
|
DRWE->first_error_sector = CURRENT->sector;
|
DRWE->first_error_sector = CURRENT->sector;
|
DRWE->first_error_generation = DRS->generation;
|
DRWE->first_error_generation = DRS->generation;
|
}
|
}
|
DRWE->last_error_sector = CURRENT->sector;
|
DRWE->last_error_sector = CURRENT->sector;
|
DRWE->last_error_generation = DRS->generation;
|
DRWE->last_error_generation = DRS->generation;
|
}
|
}
|
end_request(0);
|
end_request(0);
|
}
|
}
|
}
|
}
|
|
|
/* Interrupt handler evaluating the result of the r/w operation */
|
/* Interrupt handler evaluating the result of the r/w operation */
|
static void rw_interrupt(void)
|
static void rw_interrupt(void)
|
{
|
{
|
int nr_sectors, ssize, eoc;
|
int nr_sectors, ssize, eoc;
|
|
|
if (!DRS->first_read_date)
|
if (!DRS->first_read_date)
|
DRS->first_read_date = jiffies;
|
DRS->first_read_date = jiffies;
|
|
|
nr_sectors = 0;
|
nr_sectors = 0;
|
CODE2SIZE;
|
CODE2SIZE;
|
|
|
if(ST1 & ST1_EOC)
|
if(ST1 & ST1_EOC)
|
eoc = 1;
|
eoc = 1;
|
else
|
else
|
eoc = 0;
|
eoc = 0;
|
nr_sectors = ((R_TRACK-TRACK)*_floppy->head+R_HEAD-HEAD) *
|
nr_sectors = ((R_TRACK-TRACK)*_floppy->head+R_HEAD-HEAD) *
|
_floppy->sect + ((R_SECTOR-SECTOR+eoc) << SIZECODE >> 2) -
|
_floppy->sect + ((R_SECTOR-SECTOR+eoc) << SIZECODE >> 2) -
|
(sector_t % _floppy->sect) % ssize;
|
(sector_t % _floppy->sect) % ssize;
|
|
|
#ifdef FLOPPY_SANITY_CHECK
|
#ifdef FLOPPY_SANITY_CHECK
|
if (nr_sectors > current_count_sectors + ssize -
|
if (nr_sectors > current_count_sectors + ssize -
|
(current_count_sectors + sector_t) % ssize +
|
(current_count_sectors + sector_t) % ssize +
|
sector_t % ssize){
|
sector_t % ssize){
|
DPRINT("long rw: %x instead of %lx\n",
|
DPRINT("long rw: %x instead of %lx\n",
|
nr_sectors, current_count_sectors);
|
nr_sectors, current_count_sectors);
|
printk("rs=%d s=%d\n", R_SECTOR, SECTOR);
|
printk("rs=%d s=%d\n", R_SECTOR, SECTOR);
|
printk("rh=%d h=%d\n", R_HEAD, HEAD);
|
printk("rh=%d h=%d\n", R_HEAD, HEAD);
|
printk("rt=%d t=%d\n", R_TRACK, TRACK);
|
printk("rt=%d t=%d\n", R_TRACK, TRACK);
|
printk("spt=%d st=%d ss=%d\n", SECT_PER_TRACK,
|
printk("spt=%d st=%d ss=%d\n", SECT_PER_TRACK,
|
sector_t, ssize);
|
sector_t, ssize);
|
}
|
}
|
#endif
|
#endif
|
INFBOUND(nr_sectors,0);
|
INFBOUND(nr_sectors,0);
|
SUPBOUND(current_count_sectors, nr_sectors);
|
SUPBOUND(current_count_sectors, nr_sectors);
|
|
|
switch (interpret_errors()){
|
switch (interpret_errors()){
|
case 2:
|
case 2:
|
cont->redo();
|
cont->redo();
|
return;
|
return;
|
case 1:
|
case 1:
|
if (!current_count_sectors){
|
if (!current_count_sectors){
|
cont->error();
|
cont->error();
|
cont->redo();
|
cont->redo();
|
return;
|
return;
|
}
|
}
|
break;
|
break;
|
case 0:
|
case 0:
|
if (!current_count_sectors){
|
if (!current_count_sectors){
|
cont->redo();
|
cont->redo();
|
return;
|
return;
|
}
|
}
|
current_type[current_drive] = _floppy;
|
current_type[current_drive] = _floppy;
|
floppy_sizes[TOMINOR(current_drive) ]= _floppy->size>>1;
|
floppy_sizes[TOMINOR(current_drive) ]= _floppy->size>>1;
|
break;
|
break;
|
}
|
}
|
|
|
if (probing) {
|
if (probing) {
|
if (DP->flags & FTD_MSG)
|
if (DP->flags & FTD_MSG)
|
DPRINT("Auto-detected floppy type %s in fd%d\n",
|
DPRINT("Auto-detected floppy type %s in fd%d\n",
|
_floppy->name,current_drive);
|
_floppy->name,current_drive);
|
current_type[current_drive] = _floppy;
|
current_type[current_drive] = _floppy;
|
floppy_sizes[TOMINOR(current_drive)] = _floppy->size >> 1;
|
floppy_sizes[TOMINOR(current_drive)] = _floppy->size >> 1;
|
probing = 0;
|
probing = 0;
|
}
|
}
|
|
|
if (CT(COMMAND) != FD_READ ||
|
if (CT(COMMAND) != FD_READ ||
|
raw_cmd->kernel_data == CURRENT->buffer){
|
raw_cmd->kernel_data == CURRENT->buffer){
|
/* transfer directly from buffer */
|
/* transfer directly from buffer */
|
cont->done(1);
|
cont->done(1);
|
} else if (CT(COMMAND) == FD_READ){
|
} else if (CT(COMMAND) == FD_READ){
|
buffer_track = raw_cmd->track;
|
buffer_track = raw_cmd->track;
|
buffer_drive = current_drive;
|
buffer_drive = current_drive;
|
INFBOUND(buffer_max, nr_sectors + sector_t);
|
INFBOUND(buffer_max, nr_sectors + sector_t);
|
}
|
}
|
cont->redo();
|
cont->redo();
|
}
|
}
|
|
|
/* Compute maximal contiguous buffer size. */
|
/* Compute maximal contiguous buffer size. */
|
static int buffer_chain_size(void)
|
static int buffer_chain_size(void)
|
{
|
{
|
struct buffer_head *bh;
|
struct buffer_head *bh;
|
int size;
|
int size;
|
char *base;
|
char *base;
|
|
|
base = CURRENT->buffer;
|
base = CURRENT->buffer;
|
size = CURRENT->current_nr_sectors << 9;
|
size = CURRENT->current_nr_sectors << 9;
|
bh = CURRENT->bh;
|
bh = CURRENT->bh;
|
|
|
if (bh){
|
if (bh){
|
bh = bh->b_reqnext;
|
bh = bh->b_reqnext;
|
while (bh && bh->b_data == base + size){
|
while (bh && bh->b_data == base + size){
|
size += bh->b_size;
|
size += bh->b_size;
|
bh = bh->b_reqnext;
|
bh = bh->b_reqnext;
|
}
|
}
|
}
|
}
|
return size >> 9;
|
return size >> 9;
|
}
|
}
|
|
|
/* Compute the maximal transfer size */
|
/* Compute the maximal transfer size */
|
static int transfer_size(int ssize, int max_sector, int max_size)
|
static int transfer_size(int ssize, int max_sector, int max_size)
|
{
|
{
|
SUPBOUND(max_sector, sector_t + max_size);
|
SUPBOUND(max_sector, sector_t + max_size);
|
|
|
/* alignment */
|
/* alignment */
|
max_sector -= (max_sector % _floppy->sect) % ssize;
|
max_sector -= (max_sector % _floppy->sect) % ssize;
|
|
|
/* transfer size, beginning not aligned */
|
/* transfer size, beginning not aligned */
|
current_count_sectors = max_sector - sector_t ;
|
current_count_sectors = max_sector - sector_t ;
|
|
|
return max_sector;
|
return max_sector;
|
}
|
}
|
|
|
/*
|
/*
|
* Move data from/to the track buffer to/from the buffer cache.
|
* 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)
|
static void copy_buffer(int ssize, int max_sector, int max_sector_2)
|
{
|
{
|
int remaining; /* number of transferred 512-byte sectors */
|
int remaining; /* number of transferred 512-byte sectors */
|
struct buffer_head *bh;
|
struct buffer_head *bh;
|
char *buffer, *dma_buffer;
|
char *buffer, *dma_buffer;
|
int size;
|
int size;
|
|
|
max_sector = transfer_size(ssize,
|
max_sector = transfer_size(ssize,
|
minimum(max_sector, max_sector_2),
|
minimum(max_sector, max_sector_2),
|
CURRENT->nr_sectors);
|
CURRENT->nr_sectors);
|
|
|
if (current_count_sectors <= 0 && CT(COMMAND) == FD_WRITE &&
|
if (current_count_sectors <= 0 && CT(COMMAND) == FD_WRITE &&
|
buffer_max > sector_t + CURRENT->nr_sectors)
|
buffer_max > sector_t + CURRENT->nr_sectors)
|
current_count_sectors = minimum(buffer_max - sector_t,
|
current_count_sectors = minimum(buffer_max - sector_t,
|
CURRENT->nr_sectors);
|
CURRENT->nr_sectors);
|
|
|
remaining = current_count_sectors << 9;
|
remaining = current_count_sectors << 9;
|
#ifdef FLOPPY_SANITY_CHECK
|
#ifdef FLOPPY_SANITY_CHECK
|
if ((remaining >> 9) > CURRENT->nr_sectors &&
|
if ((remaining >> 9) > CURRENT->nr_sectors &&
|
CT(COMMAND) == FD_WRITE){
|
CT(COMMAND) == FD_WRITE){
|
DPRINT("in copy buffer\n");
|
DPRINT("in copy buffer\n");
|
printk("current_count_sectors=%ld\n", current_count_sectors);
|
printk("current_count_sectors=%ld\n", current_count_sectors);
|
printk("remaining=%d\n", remaining >> 9);
|
printk("remaining=%d\n", remaining >> 9);
|
printk("CURRENT->nr_sectors=%ld\n",CURRENT->nr_sectors);
|
printk("CURRENT->nr_sectors=%ld\n",CURRENT->nr_sectors);
|
printk("CURRENT->current_nr_sectors=%ld\n",
|
printk("CURRENT->current_nr_sectors=%ld\n",
|
CURRENT->current_nr_sectors);
|
CURRENT->current_nr_sectors);
|
printk("max_sector=%d\n", max_sector);
|
printk("max_sector=%d\n", max_sector);
|
printk("ssize=%d\n", ssize);
|
printk("ssize=%d\n", ssize);
|
}
|
}
|
#endif
|
#endif
|
|
|
buffer_max = maximum(max_sector, buffer_max);
|
buffer_max = maximum(max_sector, buffer_max);
|
|
|
dma_buffer = floppy_track_buffer + ((sector_t - buffer_min) << 9);
|
dma_buffer = floppy_track_buffer + ((sector_t - buffer_min) << 9);
|
|
|
bh = CURRENT->bh;
|
bh = CURRENT->bh;
|
size = CURRENT->current_nr_sectors << 9;
|
size = CURRENT->current_nr_sectors << 9;
|
buffer = CURRENT->buffer;
|
buffer = CURRENT->buffer;
|
|
|
while (remaining > 0){
|
while (remaining > 0){
|
SUPBOUND(size, remaining);
|
SUPBOUND(size, remaining);
|
#ifdef FLOPPY_SANITY_CHECK
|
#ifdef FLOPPY_SANITY_CHECK
|
if (dma_buffer + size >
|
if (dma_buffer + size >
|
floppy_track_buffer + (max_buffer_sectors << 10) ||
|
floppy_track_buffer + (max_buffer_sectors << 10) ||
|
dma_buffer < floppy_track_buffer){
|
dma_buffer < floppy_track_buffer){
|
DPRINT("buffer overrun in copy buffer %d\n",
|
DPRINT("buffer overrun in copy buffer %d\n",
|
(int) ((floppy_track_buffer - dma_buffer) >>9));
|
(int) ((floppy_track_buffer - dma_buffer) >>9));
|
printk("sector_t=%d buffer_min=%d\n",
|
printk("sector_t=%d buffer_min=%d\n",
|
sector_t, buffer_min);
|
sector_t, buffer_min);
|
printk("current_count_sectors=%ld\n",
|
printk("current_count_sectors=%ld\n",
|
current_count_sectors);
|
current_count_sectors);
|
if (CT(COMMAND) == FD_READ)
|
if (CT(COMMAND) == FD_READ)
|
printk("read\n");
|
printk("read\n");
|
if (CT(COMMAND) == FD_READ)
|
if (CT(COMMAND) == FD_READ)
|
printk("write\n");
|
printk("write\n");
|
break;
|
break;
|
}
|
}
|
if (((unsigned long)buffer) % 512)
|
if (((unsigned long)buffer) % 512)
|
DPRINT("%p buffer not aligned\n", buffer);
|
DPRINT("%p buffer not aligned\n", buffer);
|
#endif
|
#endif
|
if (CT(COMMAND) == FD_READ)
|
if (CT(COMMAND) == FD_READ)
|
memcpy(buffer, dma_buffer, size);
|
memcpy(buffer, dma_buffer, size);
|
else
|
else
|
memcpy(dma_buffer, buffer, size);
|
memcpy(dma_buffer, buffer, size);
|
remaining -= size;
|
remaining -= size;
|
if (!remaining)
|
if (!remaining)
|
break;
|
break;
|
|
|
dma_buffer += size;
|
dma_buffer += size;
|
bh = bh->b_reqnext;
|
bh = bh->b_reqnext;
|
#ifdef FLOPPY_SANITY_CHECK
|
#ifdef FLOPPY_SANITY_CHECK
|
if (!bh){
|
if (!bh){
|
DPRINT("bh=null in copy buffer after copy\n");
|
DPRINT("bh=null in copy buffer after copy\n");
|
break;
|
break;
|
}
|
}
|
#endif
|
#endif
|
size = bh->b_size;
|
size = bh->b_size;
|
buffer = bh->b_data;
|
buffer = bh->b_data;
|
}
|
}
|
#ifdef FLOPPY_SANITY_CHECK
|
#ifdef FLOPPY_SANITY_CHECK
|
if (remaining){
|
if (remaining){
|
if (remaining > 0)
|
if (remaining > 0)
|
max_sector -= remaining >> 9;
|
max_sector -= remaining >> 9;
|
DPRINT("weirdness: remaining %d\n", remaining>>9);
|
DPRINT("weirdness: remaining %d\n", remaining>>9);
|
}
|
}
|
#endif
|
#endif
|
}
|
}
|
|
|
/*
|
/*
|
* Formulate a read/write request.
|
* Formulate a read/write request.
|
* this routine decides where to load the data (directly to buffer, or to
|
* 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
|
* tmp floppy area), how much data to load (the size of the buffer, the whole
|
* track, or a single sector)
|
* track, or a single sector)
|
* All floppy_track_buffer handling goes in here. If we ever add track buffer
|
* 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
|
* allocation on the fly, it should be done here. No other part should need
|
* modification.
|
* modification.
|
*/
|
*/
|
|
|
static int make_raw_rw_request(void)
|
static int make_raw_rw_request(void)
|
{
|
{
|
int aligned_sector_t;
|
int aligned_sector_t;
|
int max_sector, max_size, tracksize, ssize;
|
int max_sector, max_size, tracksize, ssize;
|
|
|
set_fdc(DRIVE(CURRENT->rq_dev));
|
set_fdc(DRIVE(CURRENT->rq_dev));
|
|
|
raw_cmd = &default_raw_cmd;
|
raw_cmd = &default_raw_cmd;
|
raw_cmd->flags = FD_RAW_SPIN | FD_RAW_NEED_DISK | FD_RAW_NEED_DISK |
|
raw_cmd->flags = FD_RAW_SPIN | FD_RAW_NEED_DISK | FD_RAW_NEED_DISK |
|
FD_RAW_NEED_SEEK;
|
FD_RAW_NEED_SEEK;
|
raw_cmd->cmd_count = NR_RW;
|
raw_cmd->cmd_count = NR_RW;
|
if (CURRENT->cmd == READ){
|
if (CURRENT->cmd == READ){
|
raw_cmd->flags |= FD_RAW_READ;
|
raw_cmd->flags |= FD_RAW_READ;
|
COMMAND = FM_MODE(_floppy,FD_READ);
|
COMMAND = FM_MODE(_floppy,FD_READ);
|
} else if (CURRENT->cmd == WRITE){
|
} else if (CURRENT->cmd == WRITE){
|
raw_cmd->flags |= FD_RAW_WRITE;
|
raw_cmd->flags |= FD_RAW_WRITE;
|
COMMAND = FM_MODE(_floppy,FD_WRITE);
|
COMMAND = FM_MODE(_floppy,FD_WRITE);
|
} else {
|
} else {
|
DPRINT("make_raw_rw_request: unknown command\n");
|
DPRINT("make_raw_rw_request: unknown command\n");
|
return 0;
|
return 0;
|
}
|
}
|
|
|
max_sector = _floppy->sect * _floppy->head;
|
max_sector = _floppy->sect * _floppy->head;
|
|
|
TRACK = CURRENT->sector / max_sector;
|
TRACK = CURRENT->sector / max_sector;
|
sector_t = CURRENT->sector % max_sector;
|
sector_t = CURRENT->sector % max_sector;
|
if (_floppy->track && TRACK >= _floppy->track)
|
if (_floppy->track && TRACK >= _floppy->track)
|
return 0;
|
return 0;
|
HEAD = sector_t / _floppy->sect;
|
HEAD = sector_t / _floppy->sect;
|
|
|
if (((_floppy->stretch & FD_SWAPSIDES) || TESTF(FD_NEED_TWADDLE)) &&
|
if (((_floppy->stretch & FD_SWAPSIDES) || TESTF(FD_NEED_TWADDLE)) &&
|
sector_t < _floppy->sect)
|
sector_t < _floppy->sect)
|
max_sector = _floppy->sect;
|
max_sector = _floppy->sect;
|
|
|
/* 2M disks have phantom sectors on the first track */
|
/* 2M disks have phantom sectors on the first track */
|
if ((_floppy->rate & FD_2M) && (!TRACK) && (!HEAD)){
|
if ((_floppy->rate & FD_2M) && (!TRACK) && (!HEAD)){
|
max_sector = 2 * _floppy->sect / 3;
|
max_sector = 2 * _floppy->sect / 3;
|
if (sector_t >= max_sector){
|
if (sector_t >= max_sector){
|
current_count_sectors = minimum(_floppy->sect - sector_t,
|
current_count_sectors = minimum(_floppy->sect - sector_t,
|
CURRENT->nr_sectors);
|
CURRENT->nr_sectors);
|
return 1;
|
return 1;
|
}
|
}
|
SIZECODE = 2;
|
SIZECODE = 2;
|
} else
|
} else
|
SIZECODE = FD_SIZECODE(_floppy);
|
SIZECODE = FD_SIZECODE(_floppy);
|
raw_cmd->rate = _floppy->rate & 0x43;
|
raw_cmd->rate = _floppy->rate & 0x43;
|
if ((_floppy->rate & FD_2M) &&
|
if ((_floppy->rate & FD_2M) &&
|
(TRACK || HEAD) &&
|
(TRACK || HEAD) &&
|
raw_cmd->rate == 2)
|
raw_cmd->rate == 2)
|
raw_cmd->rate = 1;
|
raw_cmd->rate = 1;
|
|
|
if (SIZECODE)
|
if (SIZECODE)
|
SIZECODE2 = 0xff;
|
SIZECODE2 = 0xff;
|
else
|
else
|
SIZECODE2 = 0x80;
|
SIZECODE2 = 0x80;
|
raw_cmd->track = TRACK << STRETCH(_floppy);
|
raw_cmd->track = TRACK << STRETCH(_floppy);
|
DR_SELECT = UNIT(current_drive) + PH_HEAD(_floppy,HEAD);
|
DR_SELECT = UNIT(current_drive) + PH_HEAD(_floppy,HEAD);
|
GAP = _floppy->gap;
|
GAP = _floppy->gap;
|
CODE2SIZE;
|
CODE2SIZE;
|
SECT_PER_TRACK = _floppy->sect << 2 >> SIZECODE;
|
SECT_PER_TRACK = _floppy->sect << 2 >> SIZECODE;
|
SECTOR = ((sector_t % _floppy->sect) << 2 >> SIZECODE) + 1;
|
SECTOR = ((sector_t % _floppy->sect) << 2 >> SIZECODE) + 1;
|
tracksize = _floppy->sect - _floppy->sect % ssize;
|
tracksize = _floppy->sect - _floppy->sect % ssize;
|
if (tracksize < _floppy->sect){
|
if (tracksize < _floppy->sect){
|
SECT_PER_TRACK ++;
|
SECT_PER_TRACK ++;
|
if (tracksize <= sector_t % _floppy->sect)
|
if (tracksize <= sector_t % _floppy->sect)
|
SECTOR--;
|
SECTOR--;
|
while (tracksize <= sector_t % _floppy->sect){
|
while (tracksize <= sector_t % _floppy->sect){
|
while(tracksize + ssize > _floppy->sect){
|
while(tracksize + ssize > _floppy->sect){
|
SIZECODE--;
|
SIZECODE--;
|
ssize >>= 1;
|
ssize >>= 1;
|
}
|
}
|
SECTOR++; SECT_PER_TRACK ++;
|
SECTOR++; SECT_PER_TRACK ++;
|
tracksize += ssize;
|
tracksize += ssize;
|
}
|
}
|
max_sector = HEAD * _floppy->sect + tracksize;
|
max_sector = HEAD * _floppy->sect + tracksize;
|
} else if (!TRACK && !HEAD && !(_floppy->rate & FD_2M) && probing)
|
} else if (!TRACK && !HEAD && !(_floppy->rate & FD_2M) && probing)
|
max_sector = _floppy->sect;
|
max_sector = _floppy->sect;
|
|
|
aligned_sector_t = sector_t - (sector_t % _floppy->sect) % ssize;
|
aligned_sector_t = sector_t - (sector_t % _floppy->sect) % ssize;
|
max_size = CURRENT->nr_sectors;
|
max_size = CURRENT->nr_sectors;
|
if ((raw_cmd->track == buffer_track) &&
|
if ((raw_cmd->track == buffer_track) &&
|
(current_drive == buffer_drive) &&
|
(current_drive == buffer_drive) &&
|
(sector_t >= buffer_min) && (sector_t < buffer_max)) {
|
(sector_t >= buffer_min) && (sector_t < buffer_max)) {
|
/* data already in track buffer */
|
/* data already in track buffer */
|
if (CT(COMMAND) == FD_READ) {
|
if (CT(COMMAND) == FD_READ) {
|
copy_buffer(1, max_sector, buffer_max);
|
copy_buffer(1, max_sector, buffer_max);
|
return 1;
|
return 1;
|
}
|
}
|
} else if (aligned_sector_t != sector_t || CURRENT->nr_sectors < ssize){
|
} else if (aligned_sector_t != sector_t || CURRENT->nr_sectors < ssize){
|
if (CT(COMMAND) == FD_WRITE){
|
if (CT(COMMAND) == FD_WRITE){
|
if (sector_t + CURRENT->nr_sectors > ssize &&
|
if (sector_t + CURRENT->nr_sectors > ssize &&
|
sector_t + CURRENT->nr_sectors < ssize + ssize)
|
sector_t + CURRENT->nr_sectors < ssize + ssize)
|
max_size = ssize + ssize;
|
max_size = ssize + ssize;
|
else
|
else
|
max_size = ssize;
|
max_size = ssize;
|
}
|
}
|
raw_cmd->flags &= ~FD_RAW_WRITE;
|
raw_cmd->flags &= ~FD_RAW_WRITE;
|
raw_cmd->flags |= FD_RAW_READ;
|
raw_cmd->flags |= FD_RAW_READ;
|
COMMAND = FM_MODE(_floppy,FD_READ);
|
COMMAND = FM_MODE(_floppy,FD_READ);
|
} else if ((unsigned long)CURRENT->buffer < MAX_DMA_ADDRESS) {
|
} else if ((unsigned long)CURRENT->buffer < MAX_DMA_ADDRESS) {
|
unsigned long dma_limit;
|
unsigned long dma_limit;
|
int direct, indirect;
|
int direct, indirect;
|
|
|
indirect= transfer_size(ssize,max_sector,max_buffer_sectors*2) -
|
indirect= transfer_size(ssize,max_sector,max_buffer_sectors*2) -
|
sector_t;
|
sector_t;
|
|
|
/*
|
/*
|
* Do NOT use minimum() here---MAX_DMA_ADDRESS is 64 bits wide
|
* Do NOT use minimum() here---MAX_DMA_ADDRESS is 64 bits wide
|
* on a 64 bit machine!
|
* on a 64 bit machine!
|
*/
|
*/
|
max_size = buffer_chain_size();
|
max_size = buffer_chain_size();
|
#ifndef CONFIG_ARM
|
#ifndef CONFIG_ARM
|
dma_limit = (MAX_DMA_ADDRESS - ((unsigned long) CURRENT->buffer)) >> 9;
|
dma_limit = (MAX_DMA_ADDRESS - ((unsigned long) CURRENT->buffer)) >> 9;
|
if ((unsigned long) max_size > dma_limit) {
|
if ((unsigned long) max_size > dma_limit) {
|
max_size = dma_limit;
|
max_size = dma_limit;
|
}
|
}
|
/* 64 kb boundaries */
|
/* 64 kb boundaries */
|
if (CROSS_64KB(CURRENT->buffer, max_size << 9))
|
if (CROSS_64KB(CURRENT->buffer, max_size << 9))
|
max_size = (K_64 - ((long) CURRENT->buffer) % K_64)>>9;
|
max_size = (K_64 - ((long) CURRENT->buffer) % K_64)>>9;
|
#endif
|
#endif
|
direct = transfer_size(ssize,max_sector,max_size) - sector_t;
|
direct = transfer_size(ssize,max_sector,max_size) - sector_t;
|
/*
|
/*
|
* We try to read tracks, but if we get too many errors, we
|
* We try to read tracks, but if we get too many errors, we
|
* go back to reading just one sector at a time.
|
* go back to reading just one sector at a time.
|
*
|
*
|
* This means we should be able to read a sector even if there
|
* This means we should be able to read a sector even if there
|
* are other bad sectors on this track.
|
* are other bad sectors on this track.
|
*/
|
*/
|
if (!direct ||
|
if (!direct ||
|
(indirect * 2 > direct * 3 &&
|
(indirect * 2 > direct * 3 &&
|
*errors < DP->max_errors.read_track &&
|
*errors < DP->max_errors.read_track &&
|
/*!TESTF(FD_NEED_TWADDLE) &&*/
|
/*!TESTF(FD_NEED_TWADDLE) &&*/
|
((!probing || (DP->read_track&(1<<DRS->probed_format)))))){
|
((!probing || (DP->read_track&(1<<DRS->probed_format)))))){
|
max_size = CURRENT->nr_sectors;
|
max_size = CURRENT->nr_sectors;
|
} else {
|
} else {
|
raw_cmd->kernel_data = CURRENT->buffer;
|
raw_cmd->kernel_data = CURRENT->buffer;
|
raw_cmd->length = current_count_sectors << 9;
|
raw_cmd->length = current_count_sectors << 9;
|
if (raw_cmd->length == 0){
|
if (raw_cmd->length == 0){
|
DPRINT("zero dma transfer attempted from make_raw_request\n");
|
DPRINT("zero dma transfer attempted from make_raw_request\n");
|
DPRINT("indirect=%d direct=%d sector_t=%d",
|
DPRINT("indirect=%d direct=%d sector_t=%d",
|
indirect, direct, sector_t);
|
indirect, direct, sector_t);
|
return 0;
|
return 0;
|
}
|
}
|
return 2;
|
return 2;
|
}
|
}
|
}
|
}
|
|
|
if (CT(COMMAND) == FD_READ)
|
if (CT(COMMAND) == FD_READ)
|
max_size = max_sector; /* unbounded */
|
max_size = max_sector; /* unbounded */
|
|
|
/* claim buffer track if needed */
|
/* claim buffer track if needed */
|
if (buffer_track != raw_cmd->track || /* bad track */
|
if (buffer_track != raw_cmd->track || /* bad track */
|
buffer_drive !=current_drive || /* bad drive */
|
buffer_drive !=current_drive || /* bad drive */
|
sector_t > buffer_max ||
|
sector_t > buffer_max ||
|
sector_t < buffer_min ||
|
sector_t < buffer_min ||
|
((CT(COMMAND) == FD_READ ||
|
((CT(COMMAND) == FD_READ ||
|
(aligned_sector_t == sector_t && CURRENT->nr_sectors >= ssize))&&
|
(aligned_sector_t == sector_t && CURRENT->nr_sectors >= ssize))&&
|
max_sector > 2 * max_buffer_sectors + buffer_min &&
|
max_sector > 2 * max_buffer_sectors + buffer_min &&
|
max_size + sector_t > 2 * max_buffer_sectors + buffer_min)
|
max_size + sector_t > 2 * max_buffer_sectors + buffer_min)
|
/* not enough space */){
|
/* not enough space */){
|
buffer_track = -1;
|
buffer_track = -1;
|
buffer_drive = current_drive;
|
buffer_drive = current_drive;
|
buffer_max = buffer_min = aligned_sector_t;
|
buffer_max = buffer_min = aligned_sector_t;
|
}
|
}
|
raw_cmd->kernel_data = floppy_track_buffer +
|
raw_cmd->kernel_data = floppy_track_buffer +
|
((aligned_sector_t-buffer_min)<<9);
|
((aligned_sector_t-buffer_min)<<9);
|
|
|
if (CT(COMMAND) == FD_WRITE){
|
if (CT(COMMAND) == FD_WRITE){
|
/* copy write buffer to track buffer.
|
/* copy write buffer to track buffer.
|
* if we get here, we know that the write
|
* if we get here, we know that the write
|
* is either aligned or the data already in the buffer
|
* is either aligned or the data already in the buffer
|
* (buffer will be overwritten) */
|
* (buffer will be overwritten) */
|
#ifdef FLOPPY_SANITY_CHECK
|
#ifdef FLOPPY_SANITY_CHECK
|
if (sector_t != aligned_sector_t && buffer_track == -1)
|
if (sector_t != aligned_sector_t && buffer_track == -1)
|
DPRINT("internal error offset !=0 on write\n");
|
DPRINT("internal error offset !=0 on write\n");
|
#endif
|
#endif
|
buffer_track = raw_cmd->track;
|
buffer_track = raw_cmd->track;
|
buffer_drive = current_drive;
|
buffer_drive = current_drive;
|
copy_buffer(ssize, max_sector, 2*max_buffer_sectors+buffer_min);
|
copy_buffer(ssize, max_sector, 2*max_buffer_sectors+buffer_min);
|
} else
|
} else
|
transfer_size(ssize, max_sector,
|
transfer_size(ssize, max_sector,
|
2*max_buffer_sectors+buffer_min-aligned_sector_t);
|
2*max_buffer_sectors+buffer_min-aligned_sector_t);
|
|
|
/* round up current_count_sectors to get dma xfer size */
|
/* round up current_count_sectors to get dma xfer size */
|
raw_cmd->length = sector_t+current_count_sectors-aligned_sector_t;
|
raw_cmd->length = sector_t+current_count_sectors-aligned_sector_t;
|
raw_cmd->length = ((raw_cmd->length -1)|(ssize-1))+1;
|
raw_cmd->length = ((raw_cmd->length -1)|(ssize-1))+1;
|
raw_cmd->length <<= 9;
|
raw_cmd->length <<= 9;
|
#ifdef FLOPPY_SANITY_CHECK
|
#ifdef FLOPPY_SANITY_CHECK
|
if ((raw_cmd->length < current_count_sectors << 9) ||
|
if ((raw_cmd->length < current_count_sectors << 9) ||
|
(raw_cmd->kernel_data != CURRENT->buffer &&
|
(raw_cmd->kernel_data != CURRENT->buffer &&
|
CT(COMMAND) == FD_WRITE &&
|
CT(COMMAND) == FD_WRITE &&
|
(aligned_sector_t + (raw_cmd->length >> 9) > buffer_max ||
|
(aligned_sector_t + (raw_cmd->length >> 9) > buffer_max ||
|
aligned_sector_t < buffer_min)) ||
|
aligned_sector_t < buffer_min)) ||
|
raw_cmd->length % (128 << SIZECODE) ||
|
raw_cmd->length % (128 << SIZECODE) ||
|
raw_cmd->length <= 0 || current_count_sectors <= 0){
|
raw_cmd->length <= 0 || current_count_sectors <= 0){
|
DPRINT("fractionary current count b=%lx s=%lx\n",
|
DPRINT("fractionary current count b=%lx s=%lx\n",
|
raw_cmd->length, current_count_sectors);
|
raw_cmd->length, current_count_sectors);
|
if (raw_cmd->kernel_data != CURRENT->buffer)
|
if (raw_cmd->kernel_data != CURRENT->buffer)
|
printk("addr=%d, length=%ld\n",
|
printk("addr=%d, length=%ld\n",
|
(int) ((raw_cmd->kernel_data -
|
(int) ((raw_cmd->kernel_data -
|
floppy_track_buffer) >> 9),
|
floppy_track_buffer) >> 9),
|
current_count_sectors);
|
current_count_sectors);
|
printk("st=%d ast=%d mse=%d msi=%d\n",
|
printk("st=%d ast=%d mse=%d msi=%d\n",
|
sector_t, aligned_sector_t, max_sector, max_size);
|
sector_t, aligned_sector_t, max_sector, max_size);
|
printk("ssize=%x SIZECODE=%d\n", ssize, SIZECODE);
|
printk("ssize=%x SIZECODE=%d\n", ssize, SIZECODE);
|
printk("command=%x SECTOR=%d HEAD=%d, TRACK=%d\n",
|
printk("command=%x SECTOR=%d HEAD=%d, TRACK=%d\n",
|
COMMAND, SECTOR, HEAD, TRACK);
|
COMMAND, SECTOR, HEAD, TRACK);
|
printk("buffer drive=%d\n", buffer_drive);
|
printk("buffer drive=%d\n", buffer_drive);
|
printk("buffer track=%d\n", buffer_track);
|
printk("buffer track=%d\n", buffer_track);
|
printk("buffer_min=%d\n", buffer_min);
|
printk("buffer_min=%d\n", buffer_min);
|
printk("buffer_max=%d\n", buffer_max);
|
printk("buffer_max=%d\n", buffer_max);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
if (raw_cmd->kernel_data != CURRENT->buffer){
|
if (raw_cmd->kernel_data != CURRENT->buffer){
|
if (raw_cmd->kernel_data < floppy_track_buffer ||
|
if (raw_cmd->kernel_data < floppy_track_buffer ||
|
current_count_sectors < 0 ||
|
current_count_sectors < 0 ||
|
raw_cmd->length < 0 ||
|
raw_cmd->length < 0 ||
|
raw_cmd->kernel_data + raw_cmd->length >
|
raw_cmd->kernel_data + raw_cmd->length >
|
floppy_track_buffer + (max_buffer_sectors << 10)){
|
floppy_track_buffer + (max_buffer_sectors << 10)){
|
DPRINT("buffer overrun in schedule dma\n");
|
DPRINT("buffer overrun in schedule dma\n");
|
printk("sector_t=%d buffer_min=%d current_count=%ld\n",
|
printk("sector_t=%d buffer_min=%d current_count=%ld\n",
|
sector_t, buffer_min,
|
sector_t, buffer_min,
|
raw_cmd->length >> 9);
|
raw_cmd->length >> 9);
|
printk("current_count_sectors=%ld\n",
|
printk("current_count_sectors=%ld\n",
|
current_count_sectors);
|
current_count_sectors);
|
if (CT(COMMAND) == FD_READ)
|
if (CT(COMMAND) == FD_READ)
|
printk("read\n");
|
printk("read\n");
|
if (CT(COMMAND) == FD_READ)
|
if (CT(COMMAND) == FD_READ)
|
printk("write\n");
|
printk("write\n");
|
return 0;
|
return 0;
|
}
|
}
|
} else if (raw_cmd->length > CURRENT->nr_sectors << 9 ||
|
} else if (raw_cmd->length > CURRENT->nr_sectors << 9 ||
|
current_count_sectors > CURRENT->nr_sectors){
|
current_count_sectors > CURRENT->nr_sectors){
|
DPRINT("buffer overrun in direct transfer\n");
|
DPRINT("buffer overrun in direct transfer\n");
|
return 0;
|
return 0;
|
} else if (raw_cmd->length < current_count_sectors << 9){
|
} else if (raw_cmd->length < current_count_sectors << 9){
|
DPRINT("more sectors than bytes\n");
|
DPRINT("more sectors than bytes\n");
|
printk("bytes=%ld\n", raw_cmd->length >> 9);
|
printk("bytes=%ld\n", raw_cmd->length >> 9);
|
printk("sectors=%ld\n", current_count_sectors);
|
printk("sectors=%ld\n", current_count_sectors);
|
}
|
}
|
if (raw_cmd->length == 0){
|
if (raw_cmd->length == 0){
|
DPRINT("zero dma transfer attempted from make_raw_request\n");
|
DPRINT("zero dma transfer attempted from make_raw_request\n");
|
return 0;
|
return 0;
|
}
|
}
|
#endif
|
#endif
|
return 2;
|
return 2;
|
}
|
}
|
|
|
static void redo_fd_request(void)
|
static void redo_fd_request(void)
|
{
|
{
|
#define REPEAT {request_done(0); continue; }
|
#define REPEAT {request_done(0); continue; }
|
kdev_t device;
|
kdev_t device;
|
int tmp;
|
int tmp;
|
|
|
lastredo = jiffies;
|
lastredo = jiffies;
|
if (current_drive < N_DRIVE)
|
if (current_drive < N_DRIVE)
|
floppy_off(current_drive);
|
floppy_off(current_drive);
|
|
|
if (CURRENT && CURRENT->rq_status == RQ_INACTIVE){
|
if (CURRENT && CURRENT->rq_status == RQ_INACTIVE){
|
CLEAR_INTR;
|
CLEAR_INTR;
|
unlock_fdc();
|
unlock_fdc();
|
return;
|
return;
|
}
|
}
|
|
|
while(1){
|
while(1){
|
if (!CURRENT) {
|
if (!CURRENT) {
|
CLEAR_INTR;
|
CLEAR_INTR;
|
unlock_fdc();
|
unlock_fdc();
|
return;
|
return;
|
}
|
}
|
if (MAJOR(CURRENT->rq_dev) != MAJOR_NR)
|
if (MAJOR(CURRENT->rq_dev) != MAJOR_NR)
|
panic(DEVICE_NAME ": request list destroyed");
|
panic(DEVICE_NAME ": request list destroyed");
|
if (CURRENT->bh && !buffer_locked(CURRENT->bh))
|
if (CURRENT->bh && !buffer_locked(CURRENT->bh))
|
panic(DEVICE_NAME ": block not locked");
|
panic(DEVICE_NAME ": block not locked");
|
|
|
device = CURRENT->rq_dev;
|
device = CURRENT->rq_dev;
|
set_fdc(DRIVE(device));
|
set_fdc(DRIVE(device));
|
reschedule_timeout(CURRENTD, "redo fd request", 0);
|
reschedule_timeout(CURRENTD, "redo fd request", 0);
|
|
|
set_floppy(device);
|
set_floppy(device);
|
raw_cmd = & default_raw_cmd;
|
raw_cmd = & default_raw_cmd;
|
raw_cmd->flags = 0;
|
raw_cmd->flags = 0;
|
if (start_motor(redo_fd_request)) return;
|
if (start_motor(redo_fd_request)) return;
|
disk_change(current_drive);
|
disk_change(current_drive);
|
if (test_bit(current_drive, &fake_change) ||
|
if (test_bit(current_drive, &fake_change) ||
|
TESTF(FD_DISK_CHANGED)){
|
TESTF(FD_DISK_CHANGED)){
|
DPRINT("disk absent or changed during operation\n");
|
DPRINT("disk absent or changed during operation\n");
|
REPEAT;
|
REPEAT;
|
}
|
}
|
if (!_floppy) { /* Autodetection */
|
if (!_floppy) { /* Autodetection */
|
if (!probing){
|
if (!probing){
|
DRS->probed_format = 0;
|
DRS->probed_format = 0;
|
if (next_valid_format()){
|
if (next_valid_format()){
|
DPRINT("no autodetectable formats\n");
|
DPRINT("no autodetectable formats\n");
|
_floppy = NULL;
|
_floppy = NULL;
|
REPEAT;
|
REPEAT;
|
}
|
}
|
}
|
}
|
probing = 1;
|
probing = 1;
|
_floppy = floppy_type+DP->autodetect[DRS->probed_format];
|
_floppy = floppy_type+DP->autodetect[DRS->probed_format];
|
} else
|
} else
|
probing = 0;
|
probing = 0;
|
errors = & (CURRENT->errors);
|
errors = & (CURRENT->errors);
|
tmp = make_raw_rw_request();
|
tmp = make_raw_rw_request();
|
if (tmp < 2){
|
if (tmp < 2){
|
request_done(tmp);
|
request_done(tmp);
|
continue;
|
continue;
|
}
|
}
|
|
|
if (TESTF(FD_NEED_TWADDLE))
|
if (TESTF(FD_NEED_TWADDLE))
|
twaddle();
|
twaddle();
|
floppy_tq.routine = (void *)(void *) floppy_start;
|
floppy_tq.routine = (void *)(void *) floppy_start;
|
queue_task(&floppy_tq, &tq_immediate);
|
queue_task(&floppy_tq, &tq_immediate);
|
mark_bh(IMMEDIATE_BH);
|
mark_bh(IMMEDIATE_BH);
|
#ifdef DEBUGT
|
#ifdef DEBUGT
|
debugt("queue fd request");
|
debugt("queue fd request");
|
#endif
|
#endif
|
return;
|
return;
|
}
|
}
|
#undef REPEAT
|
#undef REPEAT
|
}
|
}
|
|
|
static struct cont_t rw_cont={
|
static struct cont_t rw_cont={
|
rw_interrupt,
|
rw_interrupt,
|
redo_fd_request,
|
redo_fd_request,
|
bad_flp_intr,
|
bad_flp_intr,
|
request_done };
|
request_done };
|
|
|
static struct tq_struct request_tq =
|
static struct tq_struct request_tq =
|
{ 0, 0, (void *) (void *) redo_fd_request, 0 };
|
{ 0, 0, (void *) (void *) redo_fd_request, 0 };
|
|
|
static void process_fd_request(void)
|
static void process_fd_request(void)
|
{
|
{
|
cont = &rw_cont;
|
cont = &rw_cont;
|
queue_task(&request_tq, &tq_immediate);
|
queue_task(&request_tq, &tq_immediate);
|
mark_bh(IMMEDIATE_BH);
|
mark_bh(IMMEDIATE_BH);
|
}
|
}
|
|
|
static void do_fd_request(void)
|
static void do_fd_request(void)
|
{
|
{
|
sti();
|
sti();
|
if (fdc_busy){
|
if (fdc_busy){
|
/* fdc busy, this new request will be treated when the
|
/* fdc busy, this new request will be treated when the
|
current one is done */
|
current one is done */
|
is_alive("do fd request, old request running");
|
is_alive("do fd request, old request running");
|
return;
|
return;
|
}
|
}
|
lock_fdc(MAXTIMEOUT,0);
|
lock_fdc(MAXTIMEOUT,0);
|
process_fd_request();
|
process_fd_request();
|
is_alive("do fd request");
|
is_alive("do fd request");
|
}
|
}
|
|
|
static struct cont_t poll_cont={
|
static struct cont_t poll_cont={
|
success_and_wakeup,
|
success_and_wakeup,
|
floppy_ready,
|
floppy_ready,
|
generic_failure,
|
generic_failure,
|
generic_done };
|
generic_done };
|
|
|
static int poll_drive(int interruptible, int flag)
|
static int poll_drive(int interruptible, int flag)
|
{
|
{
|
int ret;
|
int ret;
|
/* no auto-sense, just clear dcl */
|
/* no auto-sense, just clear dcl */
|
raw_cmd = &default_raw_cmd;
|
raw_cmd = &default_raw_cmd;
|
raw_cmd->flags= flag;
|
raw_cmd->flags= flag;
|
raw_cmd->track=0;
|
raw_cmd->track=0;
|
raw_cmd->cmd_count=0;
|
raw_cmd->cmd_count=0;
|
cont = &poll_cont;
|
cont = &poll_cont;
|
#ifdef DCL_DEBUG
|
#ifdef DCL_DEBUG
|
if (DP->flags & FD_DEBUG){
|
if (DP->flags & FD_DEBUG){
|
DPRINT("setting NEWCHANGE in poll_drive\n");
|
DPRINT("setting NEWCHANGE in poll_drive\n");
|
}
|
}
|
#endif
|
#endif
|
SETF(FD_DISK_NEWCHANGE);
|
SETF(FD_DISK_NEWCHANGE);
|
WAIT(floppy_ready);
|
WAIT(floppy_ready);
|
return ret;
|
return ret;
|
}
|
}
|
|
|
/*
|
/*
|
* User triggered reset
|
* User triggered reset
|
* ====================
|
* ====================
|
*/
|
*/
|
|
|
static void reset_intr(void)
|
static void reset_intr(void)
|
{
|
{
|
printk("weird, reset interrupt called\n");
|
printk("weird, reset interrupt called\n");
|
}
|
}
|
|
|
static struct cont_t reset_cont={
|
static struct cont_t reset_cont={
|
reset_intr,
|
reset_intr,
|
success_and_wakeup,
|
success_and_wakeup,
|
generic_failure,
|
generic_failure,
|
generic_done };
|
generic_done };
|
|
|
static int user_reset_fdc(int drive, int arg, int interruptible)
|
static int user_reset_fdc(int drive, int arg, int interruptible)
|
{
|
{
|
int ret;
|
int ret;
|
|
|
ret=0;
|
ret=0;
|
LOCK_FDC(drive,interruptible);
|
LOCK_FDC(drive,interruptible);
|
if (arg == FD_RESET_ALWAYS)
|
if (arg == FD_RESET_ALWAYS)
|
FDCS->reset=1;
|
FDCS->reset=1;
|
if (FDCS->reset){
|
if (FDCS->reset){
|
cont = &reset_cont;
|
cont = &reset_cont;
|
WAIT(reset_fdc);
|
WAIT(reset_fdc);
|
}
|
}
|
process_fd_request();
|
process_fd_request();
|
return ret;
|
return ret;
|
}
|
}
|
|
|
/*
|
/*
|
* Misc Ioctl's and support
|
* Misc Ioctl's and support
|
* ========================
|
* ========================
|
*/
|
*/
|
static int fd_copyout(void *param, const void *address, int size)
|
static int fd_copyout(void *param, const void *address, int size)
|
{
|
{
|
int ret;
|
int ret;
|
|
|
ECALL(verify_area(VERIFY_WRITE,param,size));
|
ECALL(verify_area(VERIFY_WRITE,param,size));
|
memcpy_tofs(param,(void *) address, size);
|
memcpy_tofs(param,(void *) address, size);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static int fd_copyin(void *param, void *address, int size)
|
static int fd_copyin(void *param, void *address, int size)
|
{
|
{
|
int ret;
|
int ret;
|
|
|
ECALL(verify_area(VERIFY_READ,param,size));
|
ECALL(verify_area(VERIFY_READ,param,size));
|
memcpy_fromfs((void *) address, param, size);
|
memcpy_fromfs((void *) address, param, size);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
#define COPYOUT(x) ECALL(fd_copyout((void *)param, &(x), sizeof(x)))
|
#define COPYOUT(x) ECALL(fd_copyout((void *)param, &(x), sizeof(x)))
|
#define COPYIN(x) ECALL(fd_copyin((void *)param, &(x), sizeof(x)))
|
#define COPYIN(x) ECALL(fd_copyin((void *)param, &(x), sizeof(x)))
|
|
|
static inline const char *drive_name(int type, int drive)
|
static inline const char *drive_name(int type, int drive)
|
{
|
{
|
struct floppy_struct *floppy;
|
struct floppy_struct *floppy;
|
|
|
if (type)
|
if (type)
|
floppy = floppy_type + type;
|
floppy = floppy_type + type;
|
else {
|
else {
|
if (UDP->native_format)
|
if (UDP->native_format)
|
floppy = floppy_type + UDP->native_format;
|
floppy = floppy_type + UDP->native_format;
|
else
|
else
|
return "(null)";
|
return "(null)";
|
}
|
}
|
if (floppy->name)
|
if (floppy->name)
|
return floppy->name;
|
return floppy->name;
|
else
|
else
|
return "(null)";
|
return "(null)";
|
}
|
}
|
|
|
|
|
/* raw commands */
|
/* raw commands */
|
static void raw_cmd_done(int flag)
|
static void raw_cmd_done(int flag)
|
{
|
{
|
int i;
|
int i;
|
|
|
if (!flag) {
|
if (!flag) {
|
raw_cmd->flags |= FD_RAW_FAILURE;
|
raw_cmd->flags |= FD_RAW_FAILURE;
|
raw_cmd->flags |= FD_RAW_HARDFAILURE;
|
raw_cmd->flags |= FD_RAW_HARDFAILURE;
|
} else {
|
} else {
|
raw_cmd->reply_count = inr;
|
raw_cmd->reply_count = inr;
|
for (i=0; i< raw_cmd->reply_count; i++)
|
for (i=0; i< raw_cmd->reply_count; i++)
|
raw_cmd->reply[i] = reply_buffer[i];
|
raw_cmd->reply[i] = reply_buffer[i];
|
|
|
if (raw_cmd->flags & (FD_RAW_READ | FD_RAW_WRITE))
|
if (raw_cmd->flags & (FD_RAW_READ | FD_RAW_WRITE))
|
raw_cmd->length = fd_get_dma_residue();
|
raw_cmd->length = fd_get_dma_residue();
|
|
|
if ((raw_cmd->flags & FD_RAW_SOFTFAILURE) &&
|
if ((raw_cmd->flags & FD_RAW_SOFTFAILURE) &&
|
(!raw_cmd->reply_count || (raw_cmd->reply[0] & 0xc0)))
|
(!raw_cmd->reply_count || (raw_cmd->reply[0] & 0xc0)))
|
raw_cmd->flags |= FD_RAW_FAILURE;
|
raw_cmd->flags |= FD_RAW_FAILURE;
|
|
|
if (disk_change(current_drive))
|
if (disk_change(current_drive))
|
raw_cmd->flags |= FD_RAW_DISK_CHANGE;
|
raw_cmd->flags |= FD_RAW_DISK_CHANGE;
|
else
|
else
|
raw_cmd->flags &= ~FD_RAW_DISK_CHANGE;
|
raw_cmd->flags &= ~FD_RAW_DISK_CHANGE;
|
if (raw_cmd->flags & FD_RAW_NO_MOTOR_AFTER)
|
if (raw_cmd->flags & FD_RAW_NO_MOTOR_AFTER)
|
motor_off_callback(current_drive);
|
motor_off_callback(current_drive);
|
|
|
if (raw_cmd->next &&
|
if (raw_cmd->next &&
|
(!(raw_cmd->flags & FD_RAW_FAILURE) ||
|
(!(raw_cmd->flags & FD_RAW_FAILURE) ||
|
!(raw_cmd->flags & FD_RAW_STOP_IF_FAILURE)) &&
|
!(raw_cmd->flags & FD_RAW_STOP_IF_FAILURE)) &&
|
((raw_cmd->flags & FD_RAW_FAILURE) ||
|
((raw_cmd->flags & FD_RAW_FAILURE) ||
|
!(raw_cmd->flags &FD_RAW_STOP_IF_SUCCESS))) {
|
!(raw_cmd->flags &FD_RAW_STOP_IF_SUCCESS))) {
|
raw_cmd = raw_cmd->next;
|
raw_cmd = raw_cmd->next;
|
return;
|
return;
|
}
|
}
|
}
|
}
|
generic_done(flag);
|
generic_done(flag);
|
}
|
}
|
|
|
|
|
static struct cont_t raw_cmd_cont={
|
static struct cont_t raw_cmd_cont={
|
success_and_wakeup,
|
success_and_wakeup,
|
floppy_start,
|
floppy_start,
|
generic_failure,
|
generic_failure,
|
raw_cmd_done
|
raw_cmd_done
|
};
|
};
|
|
|
static inline int raw_cmd_copyout(int cmd, char *param,
|
static inline int raw_cmd_copyout(int cmd, char *param,
|
struct floppy_raw_cmd *ptr)
|
struct floppy_raw_cmd *ptr)
|
{
|
{
|
struct old_floppy_raw_cmd old_raw_cmd;
|
struct old_floppy_raw_cmd old_raw_cmd;
|
int ret;
|
int ret;
|
|
|
while(ptr) {
|
while(ptr) {
|
if (cmd == OLDFDRAWCMD) {
|
if (cmd == OLDFDRAWCMD) {
|
old_raw_cmd.flags = ptr->flags;
|
old_raw_cmd.flags = ptr->flags;
|
old_raw_cmd.data = ptr->data;
|
old_raw_cmd.data = ptr->data;
|
old_raw_cmd.length = ptr->length;
|
old_raw_cmd.length = ptr->length;
|
old_raw_cmd.rate = ptr->rate;
|
old_raw_cmd.rate = ptr->rate;
|
old_raw_cmd.reply_count = ptr->reply_count;
|
old_raw_cmd.reply_count = ptr->reply_count;
|
memcpy(old_raw_cmd.reply, ptr->reply, 7);
|
memcpy(old_raw_cmd.reply, ptr->reply, 7);
|
COPYOUT(old_raw_cmd);
|
COPYOUT(old_raw_cmd);
|
param += sizeof(old_raw_cmd);
|
param += sizeof(old_raw_cmd);
|
} else {
|
} else {
|
COPYOUT(*ptr);
|
COPYOUT(*ptr);
|
param += sizeof(struct floppy_raw_cmd);
|
param += sizeof(struct floppy_raw_cmd);
|
}
|
}
|
|
|
if ((ptr->flags & FD_RAW_READ) && ptr->buffer_length){
|
if ((ptr->flags & FD_RAW_READ) && ptr->buffer_length){
|
if (ptr->length>=0 && ptr->length<=ptr->buffer_length)
|
if (ptr->length>=0 && ptr->length<=ptr->buffer_length)
|
ECALL(fd_copyout(ptr->data,
|
ECALL(fd_copyout(ptr->data,
|
ptr->kernel_data,
|
ptr->kernel_data,
|
ptr->buffer_length -
|
ptr->buffer_length -
|
ptr->length));
|
ptr->length));
|
}
|
}
|
ptr = ptr->next;
|
ptr = ptr->next;
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
|
|
static void raw_cmd_free(struct floppy_raw_cmd **ptr)
|
static void raw_cmd_free(struct floppy_raw_cmd **ptr)
|
{
|
{
|
struct floppy_raw_cmd *next,*this;
|
struct floppy_raw_cmd *next,*this;
|
|
|
this = *ptr;
|
this = *ptr;
|
*ptr = 0;
|
*ptr = 0;
|
while(this) {
|
while(this) {
|
if (this->buffer_length) {
|
if (this->buffer_length) {
|
fd_dma_mem_free((unsigned long)this->kernel_data,
|
fd_dma_mem_free((unsigned long)this->kernel_data,
|
this->buffer_length);
|
this->buffer_length);
|
this->buffer_length = 0;
|
this->buffer_length = 0;
|
}
|
}
|
next = this->next;
|
next = this->next;
|
kfree(this);
|
kfree(this);
|
this = next;
|
this = next;
|
}
|
}
|
}
|
}
|
|
|
|
|
static inline int raw_cmd_copyin(int cmd, char *param,
|
static inline int raw_cmd_copyin(int cmd, char *param,
|
struct floppy_raw_cmd **rcmd)
|
struct floppy_raw_cmd **rcmd)
|
{
|
{
|
struct floppy_raw_cmd *ptr;
|
struct floppy_raw_cmd *ptr;
|
struct old_floppy_raw_cmd old_raw_cmd;
|
struct old_floppy_raw_cmd old_raw_cmd;
|
int ret;
|
int ret;
|
int i;
|
int i;
|
|
|
*rcmd = 0;
|
*rcmd = 0;
|
while(1) {
|
while(1) {
|
ptr = (struct floppy_raw_cmd *)
|
ptr = (struct floppy_raw_cmd *)
|
kmalloc(sizeof(struct floppy_raw_cmd), GFP_USER);
|
kmalloc(sizeof(struct floppy_raw_cmd), GFP_USER);
|
if (!ptr)
|
if (!ptr)
|
return -ENOMEM;
|
return -ENOMEM;
|
*rcmd = ptr;
|
*rcmd = ptr;
|
if (cmd == OLDFDRAWCMD){
|
if (cmd == OLDFDRAWCMD){
|
COPYIN(old_raw_cmd);
|
COPYIN(old_raw_cmd);
|
ptr->flags = old_raw_cmd.flags;
|
ptr->flags = old_raw_cmd.flags;
|
ptr->data = old_raw_cmd.data;
|
ptr->data = old_raw_cmd.data;
|
ptr->length = old_raw_cmd.length;
|
ptr->length = old_raw_cmd.length;
|
ptr->rate = old_raw_cmd.rate;
|
ptr->rate = old_raw_cmd.rate;
|
ptr->cmd_count = old_raw_cmd.cmd_count;
|
ptr->cmd_count = old_raw_cmd.cmd_count;
|
ptr->track = old_raw_cmd.track;
|
ptr->track = old_raw_cmd.track;
|
ptr->phys_length = 0;
|
ptr->phys_length = 0;
|
ptr->next = 0;
|
ptr->next = 0;
|
ptr->buffer_length = 0;
|
ptr->buffer_length = 0;
|
memcpy(ptr->cmd, old_raw_cmd.cmd, 9);
|
memcpy(ptr->cmd, old_raw_cmd.cmd, 9);
|
param += sizeof(struct old_floppy_raw_cmd);
|
param += sizeof(struct old_floppy_raw_cmd);
|
if (ptr->cmd_count > 9)
|
if (ptr->cmd_count > 9)
|
return -EINVAL;
|
return -EINVAL;
|
} else {
|
} else {
|
COPYIN(*ptr);
|
COPYIN(*ptr);
|
ptr->next = 0;
|
ptr->next = 0;
|
ptr->buffer_length = 0;
|
ptr->buffer_length = 0;
|
param += sizeof(struct floppy_raw_cmd);
|
param += sizeof(struct floppy_raw_cmd);
|
if (ptr->cmd_count > 33)
|
if (ptr->cmd_count > 33)
|
/* the command may now also take up the space
|
/* the command may now also take up the space
|
* initially intended for the reply & the
|
* initially intended for the reply & the
|
* reply count. Needed for long 82078 commands
|
* reply count. Needed for long 82078 commands
|
* such as RESTORE, which takes ... 17 command
|
* such as RESTORE, which takes ... 17 command
|
* bytes. Murphy's law #137: When you reserve
|
* bytes. Murphy's law #137: When you reserve
|
* 16 bytes for a structure, you'll one day
|
* 16 bytes for a structure, you'll one day
|
* discover that you really need 17...
|
* discover that you really need 17...
|
*/
|
*/
|
return -EINVAL;
|
return -EINVAL;
|
}
|
}
|
|
|
for (i=0; i< 16; i++)
|
for (i=0; i< 16; i++)
|
ptr->reply[i] = 0;
|
ptr->reply[i] = 0;
|
ptr->resultcode = 0;
|
ptr->resultcode = 0;
|
ptr->kernel_data = 0;
|
ptr->kernel_data = 0;
|
|
|
if (ptr->flags & (FD_RAW_READ | FD_RAW_WRITE)) {
|
if (ptr->flags & (FD_RAW_READ | FD_RAW_WRITE)) {
|
if (ptr->length <= 0)
|
if (ptr->length <= 0)
|
return -EINVAL;
|
return -EINVAL;
|
ptr->kernel_data =(char*)fd_dma_mem_alloc(ptr->length);
|
ptr->kernel_data =(char*)fd_dma_mem_alloc(ptr->length);
|
if (!ptr->kernel_data)
|
if (!ptr->kernel_data)
|
return -ENOMEM;
|
return -ENOMEM;
|
ptr->buffer_length = ptr->length;
|
ptr->buffer_length = ptr->length;
|
}
|
}
|
if ( ptr->flags & FD_RAW_READ )
|
if ( ptr->flags & FD_RAW_READ )
|
ECALL( verify_area( VERIFY_WRITE, ptr->data,
|
ECALL( verify_area( VERIFY_WRITE, ptr->data,
|
ptr->length ));
|
ptr->length ));
|
if (ptr->flags & FD_RAW_WRITE)
|
if (ptr->flags & FD_RAW_WRITE)
|
ECALL(fd_copyin(ptr->data, ptr->kernel_data,
|
ECALL(fd_copyin(ptr->data, ptr->kernel_data,
|
ptr->length));
|
ptr->length));
|
rcmd = & (ptr->next);
|
rcmd = & (ptr->next);
|
if (!(ptr->flags & FD_RAW_MORE))
|
if (!(ptr->flags & FD_RAW_MORE))
|
return 0;
|
return 0;
|
ptr->rate &= 0x43;
|
ptr->rate &= 0x43;
|
}
|
}
|
}
|
}
|
|
|
|
|
static int raw_cmd_ioctl(int cmd, void *param)
|
static int raw_cmd_ioctl(int cmd, void *param)
|
{
|
{
|
int drive, ret, ret2;
|
int drive, ret, ret2;
|
struct floppy_raw_cmd *my_raw_cmd;
|
struct floppy_raw_cmd *my_raw_cmd;
|
|
|
if (FDCS->rawcmd <= 1)
|
if (FDCS->rawcmd <= 1)
|
FDCS->rawcmd = 1;
|
FDCS->rawcmd = 1;
|
for (drive= 0; drive < N_DRIVE; drive++){
|
for (drive= 0; drive < N_DRIVE; drive++){
|
if (FDC(drive) != fdc)
|
if (FDC(drive) != fdc)
|
continue;
|
continue;
|
if (drive == current_drive){
|
if (drive == current_drive){
|
if (UDRS->fd_ref > 1){
|
if (UDRS->fd_ref > 1){
|
FDCS->rawcmd = 2;
|
FDCS->rawcmd = 2;
|
break;
|
break;
|
}
|
}
|
} else if (UDRS->fd_ref){
|
} else if (UDRS->fd_ref){
|
FDCS->rawcmd = 2;
|
FDCS->rawcmd = 2;
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
if (FDCS->reset)
|
if (FDCS->reset)
|
return -EIO;
|
return -EIO;
|
|
|
ret = raw_cmd_copyin(cmd, param, &my_raw_cmd);
|
ret = raw_cmd_copyin(cmd, param, &my_raw_cmd);
|
if (ret) {
|
if (ret) {
|
raw_cmd_free(&my_raw_cmd);
|
raw_cmd_free(&my_raw_cmd);
|
return ret;
|
return ret;
|
}
|
}
|
|
|
raw_cmd = my_raw_cmd;
|
raw_cmd = my_raw_cmd;
|
cont = &raw_cmd_cont;
|
cont = &raw_cmd_cont;
|
ret=wait_til_done(floppy_start,1);
|
ret=wait_til_done(floppy_start,1);
|
#ifdef DCL_DEBUG
|
#ifdef DCL_DEBUG
|
if (DP->flags & FD_DEBUG){
|
if (DP->flags & FD_DEBUG){
|
DPRINT("calling disk change from raw_cmd ioctl\n");
|
DPRINT("calling disk change from raw_cmd ioctl\n");
|
}
|
}
|
#endif
|
#endif
|
|
|
if (ret != -EINTR && FDCS->reset)
|
if (ret != -EINTR && FDCS->reset)
|
ret = -EIO;
|
ret = -EIO;
|
|
|
DRS->track = NO_TRACK;
|
DRS->track = NO_TRACK;
|
|
|
ret2 = raw_cmd_copyout(cmd, param, my_raw_cmd);
|
ret2 = raw_cmd_copyout(cmd, param, my_raw_cmd);
|
if (!ret)
|
if (!ret)
|
ret = ret2;
|
ret = ret2;
|
raw_cmd_free(&my_raw_cmd);
|
raw_cmd_free(&my_raw_cmd);
|
return ret;
|
return ret;
|
}
|
}
|
|
|
static int invalidate_drive(kdev_t rdev)
|
static int invalidate_drive(kdev_t rdev)
|
{
|
{
|
/* invalidate the buffer track to force a reread */
|
/* invalidate the buffer track to force a reread */
|
set_bit(DRIVE(rdev), &fake_change);
|
set_bit(DRIVE(rdev), &fake_change);
|
process_fd_request();
|
process_fd_request();
|
check_disk_change(rdev);
|
check_disk_change(rdev);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
|
|
static inline void clear_write_error(int drive)
|
static inline void clear_write_error(int drive)
|
{
|
{
|
CLEARSTRUCT(UDRWE);
|
CLEARSTRUCT(UDRWE);
|
}
|
}
|
|
|
static inline int set_geometry(unsigned int cmd, struct floppy_struct *g,
|
static inline int set_geometry(unsigned int cmd, struct floppy_struct *g,
|
int drive, int type, kdev_t device)
|
int drive, int type, kdev_t device)
|
{
|
{
|
int cnt;
|
int cnt;
|
|
|
/* sanity checking for parameters.*/
|
/* sanity checking for parameters.*/
|
if (g->sect <= 0 ||
|
if (g->sect <= 0 ||
|
g->head <= 0 ||
|
g->head <= 0 ||
|
g->track <= 0 ||
|
g->track <= 0 ||
|
g->track > UDP->tracks>>STRETCH(g) ||
|
g->track > UDP->tracks>>STRETCH(g) ||
|
/* check if reserved bits are set */
|
/* check if reserved bits are set */
|
(g->stretch&~(FD_STRETCH|FD_SWAPSIDES)) != 0)
|
(g->stretch&~(FD_STRETCH|FD_SWAPSIDES)) != 0)
|
return -EINVAL;
|
return -EINVAL;
|
if (type){
|
if (type){
|
if (!suser())
|
if (!suser())
|
return -EPERM;
|
return -EPERM;
|
LOCK_FDC(drive,1);
|
LOCK_FDC(drive,1);
|
for (cnt = 0; cnt < N_DRIVE; cnt++){
|
for (cnt = 0; cnt < N_DRIVE; cnt++){
|
if (ITYPE(drive_state[cnt].fd_device) == type &&
|
if (ITYPE(drive_state[cnt].fd_device) == type &&
|
drive_state[cnt].fd_ref)
|
drive_state[cnt].fd_ref)
|
set_bit(drive, &fake_change);
|
set_bit(drive, &fake_change);
|
}
|
}
|
floppy_type[type] = *g;
|
floppy_type[type] = *g;
|
floppy_type[type].name="user format";
|
floppy_type[type].name="user format";
|
for (cnt = type << 2; cnt < (type << 2) + 4; cnt++)
|
for (cnt = type << 2; cnt < (type << 2) + 4; cnt++)
|
floppy_sizes[cnt]= floppy_sizes[cnt+0x80]=
|
floppy_sizes[cnt]= floppy_sizes[cnt+0x80]=
|
floppy_type[type].size>>1;
|
floppy_type[type].size>>1;
|
process_fd_request();
|
process_fd_request();
|
for (cnt = 0; cnt < N_DRIVE; cnt++){
|
for (cnt = 0; cnt < N_DRIVE; cnt++){
|
if (ITYPE(drive_state[cnt].fd_device) == type &&
|
if (ITYPE(drive_state[cnt].fd_device) == type &&
|
drive_state[cnt].fd_ref)
|
drive_state[cnt].fd_ref)
|
check_disk_change(
|
check_disk_change(
|
MKDEV(FLOPPY_MAJOR,
|
MKDEV(FLOPPY_MAJOR,
|
drive_state[cnt].fd_device));
|
drive_state[cnt].fd_device));
|
}
|
}
|
} else {
|
} else {
|
LOCK_FDC(drive,1);
|
LOCK_FDC(drive,1);
|
if (cmd != FDDEFPRM)
|
if (cmd != FDDEFPRM)
|
/* notice a disk change immediately, else
|
/* notice a disk change immediately, else
|
* we loose our settings immediately*/
|
* we loose our settings immediately*/
|
CALL(poll_drive(1, FD_RAW_NEED_DISK));
|
CALL(poll_drive(1, FD_RAW_NEED_DISK));
|
user_params[drive] = *g;
|
user_params[drive] = *g;
|
if (buffer_drive == drive)
|
if (buffer_drive == drive)
|
SUPBOUND(buffer_max, user_params[drive].sect);
|
SUPBOUND(buffer_max, user_params[drive].sect);
|
current_type[drive] = &user_params[drive];
|
current_type[drive] = &user_params[drive];
|
floppy_sizes[drive] = user_params[drive].size >> 1;
|
floppy_sizes[drive] = user_params[drive].size >> 1;
|
if (cmd == FDDEFPRM)
|
if (cmd == FDDEFPRM)
|
DRS->keep_data = -1;
|
DRS->keep_data = -1;
|
else
|
else
|
DRS->keep_data = 1;
|
DRS->keep_data = 1;
|
/* invalidation. Invalidate only when needed, i.e.
|
/* invalidation. Invalidate only when needed, i.e.
|
* when there are already sectors in the buffer cache
|
* when there are already sectors in the buffer cache
|
* whose number will change. This is useful, because
|
* whose number will change. This is useful, because
|
* mtools often changes the geometry of the disk after
|
* mtools often changes the geometry of the disk after
|
* looking at the boot block */
|
* looking at the boot block */
|
if (DRS->maxblock > user_params[drive].sect || DRS->maxtrack)
|
if (DRS->maxblock > user_params[drive].sect || DRS->maxtrack)
|
invalidate_drive(device);
|
invalidate_drive(device);
|
else
|
else
|
process_fd_request();
|
process_fd_request();
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* handle obsolete ioctl's */
|
/* handle obsolete ioctl's */
|
static struct translation_entry {
|
static struct translation_entry {
|
int newcmd;
|
int newcmd;
|
int oldcmd;
|
int oldcmd;
|
int oldsize; /* size of 0x00xx-style ioctl. Reflects old structures, thus
|
int oldsize; /* size of 0x00xx-style ioctl. Reflects old structures, thus
|
* use numeric values. NO SIZEOFS */
|
* use numeric values. NO SIZEOFS */
|
} translation_table[]= {
|
} translation_table[]= {
|
{FDCLRPRM, 0, 0},
|
{FDCLRPRM, 0, 0},
|
{FDSETPRM, 1, 28},
|
{FDSETPRM, 1, 28},
|
{FDDEFPRM, 2, 28},
|
{FDDEFPRM, 2, 28},
|
{FDGETPRM, 3, 28},
|
{FDGETPRM, 3, 28},
|
{FDMSGON, 4, 0},
|
{FDMSGON, 4, 0},
|
{FDMSGOFF, 5, 0},
|
{FDMSGOFF, 5, 0},
|
{FDFMTBEG, 6, 0},
|
{FDFMTBEG, 6, 0},
|
{FDFMTTRK, 7, 12},
|
{FDFMTTRK, 7, 12},
|
{FDFMTEND, 8, 0},
|
{FDFMTEND, 8, 0},
|
{FDSETEMSGTRESH, 10, 0},
|
{FDSETEMSGTRESH, 10, 0},
|
{FDFLUSH, 11, 0},
|
{FDFLUSH, 11, 0},
|
{FDSETMAXERRS, 12, 20},
|
{FDSETMAXERRS, 12, 20},
|
{OLDFDRAWCMD, 30, 0},
|
{OLDFDRAWCMD, 30, 0},
|
{FDGETMAXERRS, 14, 20},
|
{FDGETMAXERRS, 14, 20},
|
{FDGETDRVTYP, 16, 16},
|
{FDGETDRVTYP, 16, 16},
|
{FDSETDRVPRM, 20, 88},
|
{FDSETDRVPRM, 20, 88},
|
{FDGETDRVPRM, 21, 88},
|
{FDGETDRVPRM, 21, 88},
|
{FDGETDRVSTAT, 22, 52},
|
{FDGETDRVSTAT, 22, 52},
|
{FDPOLLDRVSTAT, 23, 52},
|
{FDPOLLDRVSTAT, 23, 52},
|
{FDRESET, 24, 0},
|
{FDRESET, 24, 0},
|
{FDGETFDCSTAT, 25, 40},
|
{FDGETFDCSTAT, 25, 40},
|
{FDWERRORCLR, 27, 0},
|
{FDWERRORCLR, 27, 0},
|
{FDWERRORGET, 28, 24},
|
{FDWERRORGET, 28, 24},
|
{FDRAWCMD, 0, 0},
|
{FDRAWCMD, 0, 0},
|
{FDEJECT, 0, 0},
|
{FDEJECT, 0, 0},
|
{FDTWADDLE, 40, 0} };
|
{FDTWADDLE, 40, 0} };
|
|
|
static inline int normalize_0x02xx_ioctl(int *cmd, int *size)
|
static inline int normalize_0x02xx_ioctl(int *cmd, int *size)
|
{
|
{
|
int i;
|
int i;
|
|
|
for (i=0; i < ARRAY_SIZE(translation_table); i++) {
|
for (i=0; i < ARRAY_SIZE(translation_table); i++) {
|
if ((*cmd & 0xffff) == (translation_table[i].newcmd & 0xffff)){
|
if ((*cmd & 0xffff) == (translation_table[i].newcmd & 0xffff)){
|
*size = _IOC_SIZE(*cmd);
|
*size = _IOC_SIZE(*cmd);
|
*cmd = translation_table[i].newcmd;
|
*cmd = translation_table[i].newcmd;
|
if (*size > _IOC_SIZE(*cmd)) {
|
if (*size > _IOC_SIZE(*cmd)) {
|
printk("ioctl not yet supported\n");
|
printk("ioctl not yet supported\n");
|
return -EFAULT;
|
return -EFAULT;
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
return -EINVAL;
|
return -EINVAL;
|
}
|
}
|
|
|
static inline int xlate_0x00xx_ioctl(int *cmd, int *size)
|
static inline int xlate_0x00xx_ioctl(int *cmd, int *size)
|
{
|
{
|
int i;
|
int i;
|
/* old ioctls' for kernels <= 1.3.33 */
|
/* old ioctls' for kernels <= 1.3.33 */
|
/* When the next even release will come around, we'll start
|
/* When the next even release will come around, we'll start
|
* warning against these.
|
* warning against these.
|
* When the next odd release will come around, we'll fail with
|
* When the next odd release will come around, we'll fail with
|
* -EINVAL */
|
* -EINVAL */
|
if(strcmp(system_utsname.version, "1.4.0") >= 0)
|
if(strcmp(system_utsname.version, "1.4.0") >= 0)
|
printk("obsolete floppy ioctl %x\n", *cmd);
|
printk("obsolete floppy ioctl %x\n", *cmd);
|
if((system_utsname.version[0] == '1' &&
|
if((system_utsname.version[0] == '1' &&
|
strcmp(system_utsname.version, "1.5.0") >= 0) ||
|
strcmp(system_utsname.version, "1.5.0") >= 0) ||
|
(system_utsname.version[0] >= '2' &&
|
(system_utsname.version[0] >= '2' &&
|
strcmp(system_utsname.version, "2.1.0") >= 0))
|
strcmp(system_utsname.version, "2.1.0") >= 0))
|
return -EINVAL;
|
return -EINVAL;
|
for (i=0; i < ARRAY_SIZE(translation_table); i++) {
|
for (i=0; i < ARRAY_SIZE(translation_table); i++) {
|
if (*cmd == translation_table[i].oldcmd) {
|
if (*cmd == translation_table[i].oldcmd) {
|
*size = translation_table[i].oldsize;
|
*size = translation_table[i].oldsize;
|
*cmd = translation_table[i].newcmd;
|
*cmd = translation_table[i].newcmd;
|
return 0;
|
return 0;
|
}
|
}
|
}
|
}
|
return -EINVAL;
|
return -EINVAL;
|
}
|
}
|
|
|
static int fd_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
|
static int fd_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
|
unsigned long param)
|
unsigned long param)
|
{
|
{
|
#define IOCTL_MODE_BIT 8
|
#define IOCTL_MODE_BIT 8
|
#define OPEN_WRITE_BIT 16
|
#define OPEN_WRITE_BIT 16
|
#define IOCTL_ALLOWED (filp && (filp->f_mode & IOCTL_MODE_BIT))
|
#define IOCTL_ALLOWED (filp && (filp->f_mode & IOCTL_MODE_BIT))
|
#define OUT(c,x) case c: outparam = (const char *) (x); break
|
#define OUT(c,x) case c: outparam = (const char *) (x); break
|
#define IN(c,x,tag) case c: *(x) = inparam. tag ; return 0
|
#define IN(c,x,tag) case c: *(x) = inparam. tag ; return 0
|
|
|
int i,drive,type;
|
int i,drive,type;
|
kdev_t device;
|
kdev_t device;
|
int ret;
|
int ret;
|
int size;
|
int size;
|
union inparam {
|
union inparam {
|
struct floppy_struct g; /* geometry */
|
struct floppy_struct g; /* geometry */
|
struct format_descr f;
|
struct format_descr f;
|
struct floppy_max_errors max_errors;
|
struct floppy_max_errors max_errors;
|
struct floppy_drive_params dp;
|
struct floppy_drive_params dp;
|
} inparam; /* parameters coming from user space */
|
} inparam; /* parameters coming from user space */
|
const char *outparam; /* parameters passed back to user space */
|
const char *outparam; /* parameters passed back to user space */
|
|
|
device = inode->i_rdev;
|
device = inode->i_rdev;
|
switch (cmd) {
|
switch (cmd) {
|
RO_IOCTLS(device,param);
|
RO_IOCTLS(device,param);
|
}
|
}
|
type = TYPE(device);
|
type = TYPE(device);
|
drive = DRIVE(device);
|
drive = DRIVE(device);
|
|
|
/* convert compatibility eject ioctls into floppy eject ioctl.
|
/* convert compatibility eject ioctls into floppy eject ioctl.
|
* We do this in order to provide a means to eject floppy disks before
|
* We do this in order to provide a means to eject floppy disks before
|
* installing the new fdutils package */
|
* installing the new fdutils package */
|
if(cmd == CDROMEJECT || /* CD-ROM eject */
|
if(cmd == CDROMEJECT || /* CD-ROM eject */
|
cmd == 0x6470 /* SunOS floppy eject */) {
|
cmd == 0x6470 /* SunOS floppy eject */) {
|
DPRINT("obsolete eject ioctl\n");
|
DPRINT("obsolete eject ioctl\n");
|
DPRINT("please use floppycontrol --eject\n");
|
DPRINT("please use floppycontrol --eject\n");
|
cmd = FDEJECT;
|
cmd = FDEJECT;
|
}
|
}
|
|
|
/* convert the old style command into a new style command */
|
/* convert the old style command into a new style command */
|
if ((cmd & 0xff00) == 0x0200) {
|
if ((cmd & 0xff00) == 0x0200) {
|
ECALL(normalize_0x02xx_ioctl(&cmd, &size));
|
ECALL(normalize_0x02xx_ioctl(&cmd, &size));
|
} else if ((cmd & 0xff00) == 0x0000) {
|
} else if ((cmd & 0xff00) == 0x0000) {
|
ECALL(xlate_0x00xx_ioctl(&cmd, &size));
|
ECALL(xlate_0x00xx_ioctl(&cmd, &size));
|
} else
|
} else
|
return -EINVAL;
|
return -EINVAL;
|
|
|
/* permission checks */
|
/* permission checks */
|
if (((cmd & 0x80) && !suser()) ||
|
if (((cmd & 0x80) && !suser()) ||
|
((cmd & 0x40) && !IOCTL_ALLOWED))
|
((cmd & 0x40) && !IOCTL_ALLOWED))
|
return -EPERM;
|
return -EPERM;
|
|
|
/* verify writability of result, and fail early */
|
/* verify writability of result, and fail early */
|
if (_IOC_DIR(cmd) & _IOC_READ)
|
if (_IOC_DIR(cmd) & _IOC_READ)
|
ECALL(verify_area(VERIFY_WRITE,(void *) param, size));
|
ECALL(verify_area(VERIFY_WRITE,(void *) param, size));
|
|
|
/* copyin */
|
/* copyin */
|
CLEARSTRUCT(&inparam);
|
CLEARSTRUCT(&inparam);
|
if (_IOC_DIR(cmd) & _IOC_WRITE)
|
if (_IOC_DIR(cmd) & _IOC_WRITE)
|
ECALL(fd_copyin((void *)param, &inparam, size))
|
ECALL(fd_copyin((void *)param, &inparam, size))
|
|
|
switch (cmd) {
|
switch (cmd) {
|
case FDEJECT:
|
case FDEJECT:
|
if(UDRS->fd_ref != 1)
|
if(UDRS->fd_ref != 1)
|
/* somebody else has this drive open */
|
/* somebody else has this drive open */
|
return -EBUSY;
|
return -EBUSY;
|
LOCK_FDC(drive,1);
|
LOCK_FDC(drive,1);
|
|
|
/* do the actual eject. Fails on
|
/* do the actual eject. Fails on
|
* non-Sparc architectures */
|
* non-Sparc architectures */
|
ret=fd_eject(UNIT(drive));
|
ret=fd_eject(UNIT(drive));
|
|
|
USETF(FD_DISK_CHANGED);
|
USETF(FD_DISK_CHANGED);
|
USETF(FD_VERIFY);
|
USETF(FD_VERIFY);
|
process_fd_request();
|
process_fd_request();
|
return ret;
|
return ret;
|
case FDCLRPRM:
|
case FDCLRPRM:
|
LOCK_FDC(drive,1);
|
LOCK_FDC(drive,1);
|
current_type[drive] = NULL;
|
current_type[drive] = NULL;
|
floppy_sizes[drive] = MAX_DISK_SIZE;
|
floppy_sizes[drive] = MAX_DISK_SIZE;
|
UDRS->keep_data = 0;
|
UDRS->keep_data = 0;
|
return invalidate_drive(device);
|
return invalidate_drive(device);
|
case FDSETPRM:
|
case FDSETPRM:
|
case FDDEFPRM:
|
case FDDEFPRM:
|
return set_geometry(cmd, & inparam.g,
|
return set_geometry(cmd, & inparam.g,
|
drive, type, device);
|
drive, type, device);
|
case FDGETPRM:
|
case FDGETPRM:
|
LOCK_FDC(drive,1);
|
LOCK_FDC(drive,1);
|
CALL(poll_drive(1,0));
|
CALL(poll_drive(1,0));
|
process_fd_request();
|
process_fd_request();
|
if (type)
|
if (type)
|
outparam = (char *) &floppy_type[type];
|
outparam = (char *) &floppy_type[type];
|
else
|
else
|
outparam = (char *) current_type[drive];
|
outparam = (char *) current_type[drive];
|
if(!outparam)
|
if(!outparam)
|
return -ENODEV;
|
return -ENODEV;
|
break;
|
break;
|
|
|
case FDMSGON:
|
case FDMSGON:
|
UDP->flags |= FTD_MSG;
|
UDP->flags |= FTD_MSG;
|
return 0;
|
return 0;
|
case FDMSGOFF:
|
case FDMSGOFF:
|
UDP->flags &= ~FTD_MSG;
|
UDP->flags &= ~FTD_MSG;
|
return 0;
|
return 0;
|
|
|
case FDFMTBEG:
|
case FDFMTBEG:
|
LOCK_FDC(drive,1);
|
LOCK_FDC(drive,1);
|
CALL(poll_drive(1, FD_RAW_NEED_DISK));
|
CALL(poll_drive(1, FD_RAW_NEED_DISK));
|
ret = UDRS->flags;
|
ret = UDRS->flags;
|
process_fd_request();
|
process_fd_request();
|
if(ret & FD_VERIFY)
|
if(ret & FD_VERIFY)
|
return -ENODEV;
|
return -ENODEV;
|
if(!(ret & FD_DISK_WRITABLE))
|
if(!(ret & FD_DISK_WRITABLE))
|
return -EROFS;
|
return -EROFS;
|
return 0;
|
return 0;
|
case FDFMTTRK:
|
case FDFMTTRK:
|
if (UDRS->fd_ref != 1)
|
if (UDRS->fd_ref != 1)
|
return -EBUSY;
|
return -EBUSY;
|
return do_format(device, &inparam.f);
|
return do_format(device, &inparam.f);
|
case FDFMTEND:
|
case FDFMTEND:
|
case FDFLUSH:
|
case FDFLUSH:
|
LOCK_FDC(drive,1);
|
LOCK_FDC(drive,1);
|
return invalidate_drive(device);
|
return invalidate_drive(device);
|
|
|
case FDSETEMSGTRESH:
|
case FDSETEMSGTRESH:
|
UDP->max_errors.reporting =
|
UDP->max_errors.reporting =
|
(unsigned short) (param & 0x0f);
|
(unsigned short) (param & 0x0f);
|
return 0;
|
return 0;
|
OUT(FDGETMAXERRS, &UDP->max_errors);
|
OUT(FDGETMAXERRS, &UDP->max_errors);
|
IN(FDSETMAXERRS, &UDP->max_errors, max_errors);
|
IN(FDSETMAXERRS, &UDP->max_errors, max_errors);
|
|
|
case FDGETDRVTYP:
|
case FDGETDRVTYP:
|
outparam = drive_name(type,drive);
|
outparam = drive_name(type,drive);
|
SUPBOUND(size,strlen(outparam)+1);
|
SUPBOUND(size,strlen(outparam)+1);
|
break;
|
break;
|
|
|
IN(FDSETDRVPRM, UDP, dp);
|
IN(FDSETDRVPRM, UDP, dp);
|
OUT(FDGETDRVPRM, UDP);
|
OUT(FDGETDRVPRM, UDP);
|
|
|
case FDPOLLDRVSTAT:
|
case FDPOLLDRVSTAT:
|
LOCK_FDC(drive,1);
|
LOCK_FDC(drive,1);
|
CALL(poll_drive(1, FD_RAW_NEED_DISK));
|
CALL(poll_drive(1, FD_RAW_NEED_DISK));
|
process_fd_request();
|
process_fd_request();
|
/* fall through */
|
/* fall through */
|
OUT(FDGETDRVSTAT, UDRS);
|
OUT(FDGETDRVSTAT, UDRS);
|
|
|
case FDRESET:
|
case FDRESET:
|
return user_reset_fdc(drive, (int)param, 1);
|
return user_reset_fdc(drive, (int)param, 1);
|
|
|
OUT(FDGETFDCSTAT,UFDCS);
|
OUT(FDGETFDCSTAT,UFDCS);
|
|
|
case FDWERRORCLR:
|
case FDWERRORCLR:
|
CLEARSTRUCT(UDRWE);
|
CLEARSTRUCT(UDRWE);
|
return 0;
|
return 0;
|
OUT(FDWERRORGET,UDRWE);
|
OUT(FDWERRORGET,UDRWE);
|
|
|
case OLDFDRAWCMD:
|
case OLDFDRAWCMD:
|
case FDRAWCMD:
|
case FDRAWCMD:
|
if (type)
|
if (type)
|
return -EINVAL;
|
return -EINVAL;
|
LOCK_FDC(drive,1);
|
LOCK_FDC(drive,1);
|
set_floppy(device);
|
set_floppy(device);
|
CALL(i = raw_cmd_ioctl(cmd,(void *) param));
|
CALL(i = raw_cmd_ioctl(cmd,(void *) param));
|
process_fd_request();
|
process_fd_request();
|
return i;
|
return i;
|
|
|
case FDTWADDLE:
|
case FDTWADDLE:
|
LOCK_FDC(drive,1);
|
LOCK_FDC(drive,1);
|
twaddle();
|
twaddle();
|
process_fd_request();
|
process_fd_request();
|
return 0;
|
return 0;
|
|
|
default:
|
default:
|
return -EINVAL;
|
return -EINVAL;
|
}
|
}
|
|
|
if (_IOC_DIR(cmd) & _IOC_READ)
|
if (_IOC_DIR(cmd) & _IOC_READ)
|
return fd_copyout((void *)param, outparam, size);
|
return fd_copyout((void *)param, outparam, size);
|
else
|
else
|
return 0;
|
return 0;
|
#undef IOCTL_ALLOWED
|
#undef IOCTL_ALLOWED
|
#undef OUT
|
#undef OUT
|
#undef IN
|
#undef IN
|
}
|
}
|
|
|
static void config_types(void)
|
static void config_types(void)
|
{
|
{
|
int first=1;
|
int first=1;
|
int drive;
|
int drive;
|
|
|
/* read drive info out of physical CMOS */
|
/* read drive info out of physical CMOS */
|
drive=0;
|
drive=0;
|
if (!UDP->cmos)
|
if (!UDP->cmos)
|
UDP->cmos= FLOPPY0_TYPE;
|
UDP->cmos= FLOPPY0_TYPE;
|
drive=1;
|
drive=1;
|
if (!UDP->cmos && FLOPPY1_TYPE)
|
if (!UDP->cmos && FLOPPY1_TYPE)
|
UDP->cmos = FLOPPY1_TYPE;
|
UDP->cmos = FLOPPY1_TYPE;
|
|
|
/* XXX */
|
/* XXX */
|
/* additional physical CMOS drive detection should go here */
|
/* additional physical CMOS drive detection should go here */
|
|
|
for (drive=0; drive < N_DRIVE; drive++){
|
for (drive=0; drive < N_DRIVE; drive++){
|
if (UDP->cmos >= 16)
|
if (UDP->cmos >= 16)
|
UDP->cmos = 0;
|
UDP->cmos = 0;
|
if (UDP->cmos >= 0 && UDP->cmos <= NUMBER(default_drive_params))
|
if (UDP->cmos >= 0 && UDP->cmos <= NUMBER(default_drive_params))
|
memcpy((char *) UDP,
|
memcpy((char *) UDP,
|
(char *) (&default_drive_params[(int)UDP->cmos].params),
|
(char *) (&default_drive_params[(int)UDP->cmos].params),
|
sizeof(struct floppy_drive_params));
|
sizeof(struct floppy_drive_params));
|
if (UDP->cmos){
|
if (UDP->cmos){
|
if (first)
|
if (first)
|
printk(KERN_INFO "Floppy drive(s): ");
|
printk(KERN_INFO "Floppy drive(s): ");
|
else
|
else
|
printk(", ");
|
printk(", ");
|
first=0;
|
first=0;
|
if (UDP->cmos > 0){
|
if (UDP->cmos > 0){
|
allowed_drive_mask |= 1 << drive;
|
allowed_drive_mask |= 1 << drive;
|
printk("fd%d is %s", drive,
|
printk("fd%d is %s", drive,
|
default_drive_params[(int)UDP->cmos].name);
|
default_drive_params[(int)UDP->cmos].name);
|
} else
|
} else
|
printk("fd%d is unknown type %d",drive,
|
printk("fd%d is unknown type %d",drive,
|
(unsigned int)UDP->cmos);
|
(unsigned int)UDP->cmos);
|
}
|
}
|
}
|
}
|
if (!first)
|
if (!first)
|
printk("\n");
|
printk("\n");
|
}
|
}
|
|
|
static int floppy_read(struct inode * inode, struct file * filp,
|
static int floppy_read(struct inode * inode, struct file * filp,
|
char * buf, int count)
|
char * buf, int count)
|
{
|
{
|
int drive = DRIVE(inode->i_rdev);
|
int drive = DRIVE(inode->i_rdev);
|
|
|
check_disk_change(inode->i_rdev);
|
check_disk_change(inode->i_rdev);
|
if (UTESTF(FD_DISK_CHANGED))
|
if (UTESTF(FD_DISK_CHANGED))
|
return -ENXIO;
|
return -ENXIO;
|
return block_read(inode, filp, buf, count);
|
return block_read(inode, filp, buf, count);
|
}
|
}
|
|
|
static int floppy_write(struct inode * inode, struct file * filp,
|
static int floppy_write(struct inode * inode, struct file * filp,
|
const char * buf, int count)
|
const char * buf, int count)
|
{
|
{
|
int block;
|
int block;
|
int ret;
|
int ret;
|
int drive = DRIVE(inode->i_rdev);
|
int drive = DRIVE(inode->i_rdev);
|
|
|
if (!UDRS->maxblock)
|
if (!UDRS->maxblock)
|
UDRS->maxblock=1;/* make change detectable */
|
UDRS->maxblock=1;/* make change detectable */
|
check_disk_change(inode->i_rdev);
|
check_disk_change(inode->i_rdev);
|
if (UTESTF(FD_DISK_CHANGED))
|
if (UTESTF(FD_DISK_CHANGED))
|
return -ENXIO;
|
return -ENXIO;
|
if (!UTESTF(FD_DISK_WRITABLE))
|
if (!UTESTF(FD_DISK_WRITABLE))
|
return -EROFS;
|
return -EROFS;
|
block = (filp->f_pos + count) >> 9;
|
block = (filp->f_pos + count) >> 9;
|
INFBOUND(UDRS->maxblock, block);
|
INFBOUND(UDRS->maxblock, block);
|
ret= block_write(inode, filp, buf, count);
|
ret= block_write(inode, filp, buf, count);
|
return ret;
|
return ret;
|
}
|
}
|
|
|
static void floppy_release(struct inode * inode, struct file * filp)
|
static void floppy_release(struct inode * inode, struct file * filp)
|
{
|
{
|
int drive;
|
int drive;
|
|
|
drive = DRIVE(inode->i_rdev);
|
drive = DRIVE(inode->i_rdev);
|
|
|
if (!filp || (filp->f_mode & (2 | OPEN_WRITE_BIT)))
|
if (!filp || (filp->f_mode & (2 | OPEN_WRITE_BIT)))
|
/* if the file is mounted OR (writable now AND writable at
|
/* if the file is mounted OR (writable now AND writable at
|
* open time) Linus: Does this cover all cases? */
|
* open time) Linus: Does this cover all cases? */
|
block_fsync(inode,filp);
|
block_fsync(inode,filp);
|
|
|
if (UDRS->fd_ref < 0)
|
if (UDRS->fd_ref < 0)
|
UDRS->fd_ref=0;
|
UDRS->fd_ref=0;
|
else if (!UDRS->fd_ref--) {
|
else if (!UDRS->fd_ref--) {
|
DPRINT("floppy_release with fd_ref == 0");
|
DPRINT("floppy_release with fd_ref == 0");
|
UDRS->fd_ref = 0;
|
UDRS->fd_ref = 0;
|
}
|
}
|
floppy_release_irq_and_dma();
|
floppy_release_irq_and_dma();
|
}
|
}
|
|
|
/*
|
/*
|
* floppy_open check for aliasing (/dev/fd0 can be the same as
|
* floppy_open check for aliasing (/dev/fd0 can be the same as
|
* /dev/PS0 etc), and disallows simultaneous access to the same
|
* /dev/PS0 etc), and disallows simultaneous access to the same
|
* drive with different device numbers.
|
* drive with different device numbers.
|
*/
|
*/
|
#define RETERR(x) do{floppy_release(inode,filp); return -(x);}while(0)
|
#define RETERR(x) do{floppy_release(inode,filp); return -(x);}while(0)
|
|
|
static int floppy_open(struct inode * inode, struct file * filp)
|
static int floppy_open(struct inode * inode, struct file * filp)
|
{
|
{
|
int drive;
|
int drive;
|
int old_dev;
|
int old_dev;
|
int try;
|
int try;
|
char *tmp;
|
char *tmp;
|
|
|
if (!filp) {
|
if (!filp) {
|
DPRINT("Weird, open called with filp=0\n");
|
DPRINT("Weird, open called with filp=0\n");
|
return -EIO;
|
return -EIO;
|
}
|
}
|
|
|
drive = DRIVE(inode->i_rdev);
|
drive = DRIVE(inode->i_rdev);
|
if (drive >= N_DRIVE ||
|
if (drive >= N_DRIVE ||
|
!(allowed_drive_mask & (1 << drive)) ||
|
!(allowed_drive_mask & (1 << drive)) ||
|
fdc_state[FDC(drive)].version == FDC_NONE)
|
fdc_state[FDC(drive)].version == FDC_NONE)
|
return -ENXIO;
|
return -ENXIO;
|
|
|
if (TYPE(inode->i_rdev) >= NUMBER(floppy_type))
|
if (TYPE(inode->i_rdev) >= NUMBER(floppy_type))
|
return -ENXIO;
|
return -ENXIO;
|
old_dev = UDRS->fd_device;
|
old_dev = UDRS->fd_device;
|
if (UDRS->fd_ref && old_dev != MINOR(inode->i_rdev))
|
if (UDRS->fd_ref && old_dev != MINOR(inode->i_rdev))
|
return -EBUSY;
|
return -EBUSY;
|
|
|
if (!UDRS->fd_ref && (UDP->flags & FD_BROKEN_DCL)){
|
if (!UDRS->fd_ref && (UDP->flags & FD_BROKEN_DCL)){
|
USETF(FD_DISK_CHANGED);
|
USETF(FD_DISK_CHANGED);
|
USETF(FD_VERIFY);
|
USETF(FD_VERIFY);
|
}
|
}
|
|
|
if (UDRS->fd_ref == -1 ||
|
if (UDRS->fd_ref == -1 ||
|
(UDRS->fd_ref && (filp->f_flags & O_EXCL)))
|
(UDRS->fd_ref && (filp->f_flags & O_EXCL)))
|
return -EBUSY;
|
return -EBUSY;
|
|
|
if (floppy_grab_irq_and_dma())
|
if (floppy_grab_irq_and_dma())
|
return -EBUSY;
|
return -EBUSY;
|
|
|
if (filp->f_flags & O_EXCL)
|
if (filp->f_flags & O_EXCL)
|
UDRS->fd_ref = -1;
|
UDRS->fd_ref = -1;
|
else
|
else
|
UDRS->fd_ref++;
|
UDRS->fd_ref++;
|
|
|
if (!floppy_track_buffer){
|
if (!floppy_track_buffer){
|
/* if opening an ED drive, reserve a big buffer,
|
/* if opening an ED drive, reserve a big buffer,
|
* else reserve a small one */
|
* else reserve a small one */
|
if ((UDP->cmos == 6) || (UDP->cmos == 5))
|
if ((UDP->cmos == 6) || (UDP->cmos == 5))
|
try = 64; /* Only 48 actually useful */
|
try = 64; /* Only 48 actually useful */
|
else
|
else
|
try = 32; /* Only 24 actually useful */
|
try = 32; /* Only 24 actually useful */
|
|
|
tmp=(char *)fd_dma_mem_alloc(1024 * try);
|
tmp=(char *)fd_dma_mem_alloc(1024 * try);
|
if (!tmp) {
|
if (!tmp) {
|
try >>= 1; /* buffer only one side */
|
try >>= 1; /* buffer only one side */
|
INFBOUND(try, 16);
|
INFBOUND(try, 16);
|
tmp= (char *)fd_dma_mem_alloc(1024*try);
|
tmp= (char *)fd_dma_mem_alloc(1024*try);
|
}
|
}
|
if (!tmp) {
|
if (!tmp) {
|
DPRINT("Unable to allocate DMA memory\n");
|
DPRINT("Unable to allocate DMA memory\n");
|
RETERR(ENXIO);
|
RETERR(ENXIO);
|
}
|
}
|
if (floppy_track_buffer)
|
if (floppy_track_buffer)
|
fd_dma_mem_free((unsigned long)tmp,try*1024);
|
fd_dma_mem_free((unsigned long)tmp,try*1024);
|
else {
|
else {
|
buffer_min = buffer_max = -1;
|
buffer_min = buffer_max = -1;
|
floppy_track_buffer = tmp;
|
floppy_track_buffer = tmp;
|
max_buffer_sectors = try;
|
max_buffer_sectors = try;
|
}
|
}
|
}
|
}
|
|
|
UDRS->fd_device = MINOR(inode->i_rdev);
|
UDRS->fd_device = MINOR(inode->i_rdev);
|
if (old_dev != -1 && old_dev != MINOR(inode->i_rdev)) {
|
if (old_dev != -1 && old_dev != MINOR(inode->i_rdev)) {
|
if (buffer_drive == drive)
|
if (buffer_drive == drive)
|
buffer_track = -1;
|
buffer_track = -1;
|
invalidate_buffers(MKDEV(FLOPPY_MAJOR,old_dev));
|
invalidate_buffers(MKDEV(FLOPPY_MAJOR,old_dev));
|
}
|
}
|
|
|
/* Allow ioctls if we have write-permissions even if read-only open */
|
/* Allow ioctls if we have write-permissions even if read-only open */
|
if ((filp->f_mode & 2) || (permission(inode,2) == 0))
|
if ((filp->f_mode & 2) || (permission(inode,2) == 0))
|
filp->f_mode |= IOCTL_MODE_BIT;
|
filp->f_mode |= IOCTL_MODE_BIT;
|
if (filp->f_mode & 2)
|
if (filp->f_mode & 2)
|
filp->f_mode |= OPEN_WRITE_BIT;
|
filp->f_mode |= OPEN_WRITE_BIT;
|
|
|
if (UFDCS->rawcmd == 1)
|
if (UFDCS->rawcmd == 1)
|
UFDCS->rawcmd = 2;
|
UFDCS->rawcmd = 2;
|
|
|
if (filp->f_flags & O_NDELAY)
|
if (filp->f_flags & O_NDELAY)
|
return 0;
|
return 0;
|
if (filp->f_mode & 3) {
|
if (filp->f_mode & 3) {
|
UDRS->last_checked = 0;
|
UDRS->last_checked = 0;
|
check_disk_change(inode->i_rdev);
|
check_disk_change(inode->i_rdev);
|
if (UTESTF(FD_DISK_CHANGED))
|
if (UTESTF(FD_DISK_CHANGED))
|
RETERR(ENXIO);
|
RETERR(ENXIO);
|
}
|
}
|
if ((filp->f_mode & 2) && !(UTESTF(FD_DISK_WRITABLE)))
|
if ((filp->f_mode & 2) && !(UTESTF(FD_DISK_WRITABLE)))
|
RETERR(EROFS);
|
RETERR(EROFS);
|
return 0;
|
return 0;
|
#undef RETERR
|
#undef RETERR
|
}
|
}
|
|
|
/*
|
/*
|
* Check if the disk has been changed or if a change has been faked.
|
* Check if the disk has been changed or if a change has been faked.
|
*/
|
*/
|
static int check_floppy_change(kdev_t dev)
|
static int check_floppy_change(kdev_t dev)
|
{
|
{
|
int drive = DRIVE(dev);
|
int drive = DRIVE(dev);
|
|
|
if (MAJOR(dev) != MAJOR_NR) {
|
if (MAJOR(dev) != MAJOR_NR) {
|
DPRINT("check_floppy_change: not a floppy\n");
|
DPRINT("check_floppy_change: not a floppy\n");
|
return 0;
|
return 0;
|
}
|
}
|
|
|
if (UTESTF(FD_DISK_CHANGED) || UTESTF(FD_VERIFY))
|
if (UTESTF(FD_DISK_CHANGED) || UTESTF(FD_VERIFY))
|
return 1;
|
return 1;
|
|
|
if (UDP->checkfreq < jiffies - UDRS->last_checked){
|
if (UDP->checkfreq < jiffies - UDRS->last_checked){
|
lock_fdc(drive,0);
|
lock_fdc(drive,0);
|
poll_drive(0,0);
|
poll_drive(0,0);
|
process_fd_request();
|
process_fd_request();
|
}
|
}
|
|
|
if (UTESTF(FD_DISK_CHANGED) ||
|
if (UTESTF(FD_DISK_CHANGED) ||
|
UTESTF(FD_VERIFY) ||
|
UTESTF(FD_VERIFY) ||
|
test_bit(drive, &fake_change) ||
|
test_bit(drive, &fake_change) ||
|
(!TYPE(dev) && !current_type[drive]))
|
(!TYPE(dev) && !current_type[drive]))
|
return 1;
|
return 1;
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* revalidate the floppy disk, i.e. trigger format autodetection by reading
|
/* revalidate the floppy disk, i.e. trigger format autodetection by reading
|
* the bootblock (block 0). "Autodetection" is also needed to check whether
|
* 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
|
* there is a disk in the drive at all... Thus we also do it for fixed
|
* geometry formats */
|
* geometry formats */
|
static int floppy_revalidate(kdev_t dev)
|
static int floppy_revalidate(kdev_t dev)
|
{
|
{
|
#define NO_GEOM (!current_type[drive] && !TYPE(dev))
|
#define NO_GEOM (!current_type[drive] && !TYPE(dev))
|
struct buffer_head * bh;
|
struct buffer_head * bh;
|
int drive=DRIVE(dev);
|
int drive=DRIVE(dev);
|
int cf;
|
int cf;
|
|
|
if (UTESTF(FD_DISK_CHANGED) ||
|
if (UTESTF(FD_DISK_CHANGED) ||
|
UTESTF(FD_VERIFY) ||
|
UTESTF(FD_VERIFY) ||
|
test_bit(drive, &fake_change) ||
|
test_bit(drive, &fake_change) ||
|
NO_GEOM){
|
NO_GEOM){
|
lock_fdc(drive,0);
|
lock_fdc(drive,0);
|
cf = UTESTF(FD_DISK_CHANGED) || UTESTF(FD_VERIFY);
|
cf = UTESTF(FD_DISK_CHANGED) || UTESTF(FD_VERIFY);
|
if (!(cf || test_bit(drive, &fake_change) || NO_GEOM)){
|
if (!(cf || test_bit(drive, &fake_change) || NO_GEOM)){
|
process_fd_request(); /*already done by another thread*/
|
process_fd_request(); /*already done by another thread*/
|
return 0;
|
return 0;
|
}
|
}
|
UDRS->maxblock = 0;
|
UDRS->maxblock = 0;
|
UDRS->maxtrack = 0;
|
UDRS->maxtrack = 0;
|
if (buffer_drive == drive)
|
if (buffer_drive == drive)
|
buffer_track = -1;
|
buffer_track = -1;
|
clear_bit(drive, &fake_change);
|
clear_bit(drive, &fake_change);
|
UCLEARF(FD_DISK_CHANGED);
|
UCLEARF(FD_DISK_CHANGED);
|
if (cf)
|
if (cf)
|
UDRS->generation++;
|
UDRS->generation++;
|
if (NO_GEOM){
|
if (NO_GEOM){
|
/* auto-sensing */
|
/* auto-sensing */
|
int size = floppy_blocksizes[MINOR(dev)];
|
int size = floppy_blocksizes[MINOR(dev)];
|
if (!size)
|
if (!size)
|
size = 1024;
|
size = 1024;
|
if (!(bh = getblk(dev,0,size))){
|
if (!(bh = getblk(dev,0,size))){
|
process_fd_request();
|
process_fd_request();
|
return 1;
|
return 1;
|
}
|
}
|
if (bh && !buffer_uptodate(bh))
|
if (bh && !buffer_uptodate(bh))
|
ll_rw_block(READ, 1, &bh);
|
ll_rw_block(READ, 1, &bh);
|
process_fd_request();
|
process_fd_request();
|
wait_on_buffer(bh);
|
wait_on_buffer(bh);
|
brelse(bh);
|
brelse(bh);
|
return 0;
|
return 0;
|
}
|
}
|
if (cf)
|
if (cf)
|
poll_drive(0, FD_RAW_NEED_DISK);
|
poll_drive(0, FD_RAW_NEED_DISK);
|
process_fd_request();
|
process_fd_request();
|
}
|
}
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static struct file_operations floppy_fops = {
|
static struct file_operations floppy_fops = {
|
NULL, /* lseek - default */
|
NULL, /* lseek - default */
|
floppy_read, /* read - general block-dev read */
|
floppy_read, /* read - general block-dev read */
|
floppy_write, /* write - general block-dev write */
|
floppy_write, /* write - general block-dev write */
|
NULL, /* readdir - bad */
|
NULL, /* readdir - bad */
|
NULL, /* select */
|
NULL, /* select */
|
fd_ioctl, /* ioctl */
|
fd_ioctl, /* ioctl */
|
NULL, /* mmap */
|
NULL, /* mmap */
|
floppy_open, /* open */
|
floppy_open, /* open */
|
floppy_release, /* release */
|
floppy_release, /* release */
|
block_fsync, /* fsync */
|
block_fsync, /* fsync */
|
NULL, /* fasync */
|
NULL, /* fasync */
|
check_floppy_change, /* media_change */
|
check_floppy_change, /* media_change */
|
floppy_revalidate, /* revalidate */
|
floppy_revalidate, /* revalidate */
|
};
|
};
|
|
|
/*
|
/*
|
* Floppy Driver initialization
|
* Floppy Driver initialization
|
* =============================
|
* =============================
|
*/
|
*/
|
|
|
/* Determine the floppy disk controller type */
|
/* Determine the floppy disk controller type */
|
/* This routine was written by David C. Niemi */
|
/* This routine was written by David C. Niemi */
|
static char get_fdc_version(void)
|
static char get_fdc_version(void)
|
{
|
{
|
int r;
|
int r;
|
|
|
output_byte(FD_DUMPREGS); /* 82072 and better know DUMPREGS */
|
output_byte(FD_DUMPREGS); /* 82072 and better know DUMPREGS */
|
if (FDCS->reset)
|
if (FDCS->reset)
|
return FDC_NONE;
|
return FDC_NONE;
|
if ((r = result()) <= 0x00)
|
if ((r = result()) <= 0x00)
|
return FDC_NONE; /* No FDC present ??? */
|
return FDC_NONE; /* No FDC present ??? */
|
if ((r==1) && (reply_buffer[0] == 0x80)){
|
if ((r==1) && (reply_buffer[0] == 0x80)){
|
printk(KERN_INFO "FDC %d is an 8272A\n",fdc);
|
printk(KERN_INFO "FDC %d is an 8272A\n",fdc);
|
return FDC_8272A; /* 8272a/765 don't know DUMPREGS */
|
return FDC_8272A; /* 8272a/765 don't know DUMPREGS */
|
}
|
}
|
if (r != 10) {
|
if (r != 10) {
|
printk("FDC %d init: DUMPREGS: unexpected return of %d bytes.\n",
|
printk("FDC %d init: DUMPREGS: unexpected return of %d bytes.\n",
|
fdc, r);
|
fdc, r);
|
return FDC_UNKNOWN;
|
return FDC_UNKNOWN;
|
}
|
}
|
|
|
if(!fdc_configure()) {
|
if(!fdc_configure()) {
|
printk(KERN_INFO "FDC %d is an 82072\n",fdc);
|
printk(KERN_INFO "FDC %d is an 82072\n",fdc);
|
return FDC_82072; /* 82072 doesn't know CONFIGURE */
|
return FDC_82072; /* 82072 doesn't know CONFIGURE */
|
}
|
}
|
|
|
output_byte(FD_PERPENDICULAR);
|
output_byte(FD_PERPENDICULAR);
|
if(need_more_output() == MORE_OUTPUT) {
|
if(need_more_output() == MORE_OUTPUT) {
|
output_byte(0);
|
output_byte(0);
|
} else {
|
} else {
|
printk(KERN_INFO "FDC %d is an 82072A\n", fdc);
|
printk(KERN_INFO "FDC %d is an 82072A\n", fdc);
|
return FDC_82072A; /* 82072A as found on Sparcs. */
|
return FDC_82072A; /* 82072A as found on Sparcs. */
|
}
|
}
|
|
|
output_byte(FD_UNLOCK);
|
output_byte(FD_UNLOCK);
|
r = result();
|
r = result();
|
if ((r == 1) && (reply_buffer[0] == 0x80)){
|
if ((r == 1) && (reply_buffer[0] == 0x80)){
|
printk(KERN_INFO "FDC %d is a pre-1991 82077\n", fdc);
|
printk(KERN_INFO "FDC %d is a pre-1991 82077\n", fdc);
|
return FDC_82077_ORIG; /* Pre-1991 82077, doesn't know
|
return FDC_82077_ORIG; /* Pre-1991 82077, doesn't know
|
* LOCK/UNLOCK */
|
* LOCK/UNLOCK */
|
}
|
}
|
if ((r != 1) || (reply_buffer[0] != 0x00)) {
|
if ((r != 1) || (reply_buffer[0] != 0x00)) {
|
printk("FDC %d init: UNLOCK: unexpected return of %d bytes.\n",
|
printk("FDC %d init: UNLOCK: unexpected return of %d bytes.\n",
|
fdc, r);
|
fdc, r);
|
return FDC_UNKNOWN;
|
return FDC_UNKNOWN;
|
}
|
}
|
output_byte(FD_PARTID);
|
output_byte(FD_PARTID);
|
r = result();
|
r = result();
|
if (r != 1) {
|
if (r != 1) {
|
printk("FDC %d init: PARTID: unexpected return of %d bytes.\n",
|
printk("FDC %d init: PARTID: unexpected return of %d bytes.\n",
|
fdc, r);
|
fdc, r);
|
return FDC_UNKNOWN;
|
return FDC_UNKNOWN;
|
}
|
}
|
if (reply_buffer[0] == 0x80) {
|
if (reply_buffer[0] == 0x80) {
|
printk(KERN_INFO "FDC %d is a post-1991 82077\n",fdc);
|
printk(KERN_INFO "FDC %d is a post-1991 82077\n",fdc);
|
return FDC_82077; /* Revised 82077AA passes all the tests */
|
return FDC_82077; /* Revised 82077AA passes all the tests */
|
}
|
}
|
switch (reply_buffer[0] >> 5) {
|
switch (reply_buffer[0] >> 5) {
|
case 0x0:
|
case 0x0:
|
/* Either a 82078-1 or a 82078SL running at 5Volt */
|
/* Either a 82078-1 or a 82078SL running at 5Volt */
|
printk(KERN_INFO "FDC %d is an 82078.\n",fdc);
|
printk(KERN_INFO "FDC %d is an 82078.\n",fdc);
|
return FDC_82078;
|
return FDC_82078;
|
case 0x1:
|
case 0x1:
|
printk(KERN_INFO "FDC %d is a 44pin 82078\n",fdc);
|
printk(KERN_INFO "FDC %d is a 44pin 82078\n",fdc);
|
return FDC_82078;
|
return FDC_82078;
|
case 0x2:
|
case 0x2:
|
printk(KERN_INFO "FDC %d is a S82078B\n", fdc);
|
printk(KERN_INFO "FDC %d is a S82078B\n", fdc);
|
return FDC_S82078B;
|
return FDC_S82078B;
|
case 0x3:
|
case 0x3:
|
printk(KERN_INFO "FDC %d is a National Semiconductor PC87306\n", fdc);
|
printk(KERN_INFO "FDC %d is a National Semiconductor PC87306\n", fdc);
|
return FDC_87306;
|
return FDC_87306;
|
default:
|
default:
|
printk(KERN_INFO "FDC %d init: 82078 variant with unknown PARTID=%d.\n",
|
printk(KERN_INFO "FDC %d init: 82078 variant with unknown PARTID=%d.\n",
|
fdc, reply_buffer[0] >> 5);
|
fdc, reply_buffer[0] >> 5);
|
return FDC_82078_UNKN;
|
return FDC_82078_UNKN;
|
}
|
}
|
} /* get_fdc_version */
|
} /* get_fdc_version */
|
|
|
/* lilo configuration */
|
/* lilo configuration */
|
|
|
/* we make the invert_dcl function global. One day, somebody might
|
/* we make the invert_dcl function global. One day, somebody might
|
* want to centralize all thinkpad related options into one lilo option,
|
* want to centralize all thinkpad related options into one lilo option,
|
* there are just so many thinkpad related quirks! */
|
* there are just so many thinkpad related quirks! */
|
void floppy_invert_dcl(int *ints,int param)
|
void floppy_invert_dcl(int *ints,int param)
|
{
|
{
|
int i;
|
int i;
|
|
|
for (i=0; i < ARRAY_SIZE(default_drive_params); i++){
|
for (i=0; i < ARRAY_SIZE(default_drive_params); i++){
|
if (param)
|
if (param)
|
default_drive_params[i].params.flags |= 0x80;
|
default_drive_params[i].params.flags |= 0x80;
|
else
|
else
|
default_drive_params[i].params.flags &= ~0x80;
|
default_drive_params[i].params.flags &= ~0x80;
|
}
|
}
|
DPRINT("Configuring drives for inverted dcl\n");
|
DPRINT("Configuring drives for inverted dcl\n");
|
}
|
}
|
|
|
static void daring(int *ints,int param)
|
static void daring(int *ints,int param)
|
{
|
{
|
int i;
|
int i;
|
|
|
for (i=0; i < ARRAY_SIZE(default_drive_params); i++){
|
for (i=0; i < ARRAY_SIZE(default_drive_params); i++){
|
if (param){
|
if (param){
|
default_drive_params[i].params.select_delay = 0;
|
default_drive_params[i].params.select_delay = 0;
|
default_drive_params[i].params.flags |= FD_SILENT_DCL_CLEAR;
|
default_drive_params[i].params.flags |= FD_SILENT_DCL_CLEAR;
|
} else {
|
} else {
|
default_drive_params[i].params.select_delay = 2*HZ/100;
|
default_drive_params[i].params.select_delay = 2*HZ/100;
|
default_drive_params[i].params.flags &= ~FD_SILENT_DCL_CLEAR;
|
default_drive_params[i].params.flags &= ~FD_SILENT_DCL_CLEAR;
|
}
|
}
|
}
|
}
|
DPRINT("Assuming %s floppy hardware\n", param ? "standard" : "broken");
|
DPRINT("Assuming %s floppy hardware\n", param ? "standard" : "broken");
|
}
|
}
|
|
|
static void set_cmos(int *ints, int dummy)
|
static void set_cmos(int *ints, int dummy)
|
{
|
{
|
int current_drive=0;
|
int current_drive=0;
|
|
|
if (ints[0] != 2){
|
if (ints[0] != 2){
|
DPRINT("wrong number of parameter for cmos\n");
|
DPRINT("wrong number of parameter for cmos\n");
|
return;
|
return;
|
}
|
}
|
current_drive = ints[1];
|
current_drive = ints[1];
|
if (current_drive < 0 || current_drive >= 8){
|
if (current_drive < 0 || current_drive >= 8){
|
DPRINT("bad drive for set_cmos\n");
|
DPRINT("bad drive for set_cmos\n");
|
return;
|
return;
|
}
|
}
|
if (current_drive >= 4 && !FDC2)
|
if (current_drive >= 4 && !FDC2)
|
FDC2 = 0x370;
|
FDC2 = 0x370;
|
if (ints[2] <= 0 ||
|
if (ints[2] <= 0 ||
|
(ints[2] >= NUMBER(default_drive_params) && ints[2] != 16)){
|
(ints[2] >= NUMBER(default_drive_params) && ints[2] != 16)){
|
DPRINT("bad cmos code %d\n", ints[2]);
|
DPRINT("bad cmos code %d\n", ints[2]);
|
return;
|
return;
|
}
|
}
|
DP->cmos = ints[2];
|
DP->cmos = ints[2];
|
DPRINT("setting cmos code to %d\n", ints[2]);
|
DPRINT("setting cmos code to %d\n", ints[2]);
|
}
|
}
|
|
|
static struct param_table {
|
static struct param_table {
|
const char *name;
|
const char *name;
|
void (*fn)(int *ints, int param);
|
void (*fn)(int *ints, int param);
|
int *var;
|
int *var;
|
int def_param;
|
int def_param;
|
} config_params[]={
|
} config_params[]={
|
{ "allowed_drive_mask", 0, &allowed_drive_mask, 0xff },
|
{ "allowed_drive_mask", 0, &allowed_drive_mask, 0xff },
|
{ "all_drives", 0, &allowed_drive_mask, 0xff },
|
{ "all_drives", 0, &allowed_drive_mask, 0xff },
|
{ "asus_pci", 0, &allowed_drive_mask, 0x33 },
|
{ "asus_pci", 0, &allowed_drive_mask, 0x33 },
|
|
|
{ "daring", daring, 0, 1},
|
{ "daring", daring, 0, 1},
|
|
|
{ "two_fdc", 0, &FDC2, 0x370 },
|
{ "two_fdc", 0, &FDC2, 0x370 },
|
{ "one_fdc", 0, &FDC2, 0 },
|
{ "one_fdc", 0, &FDC2, 0 },
|
|
|
{ "thinkpad", floppy_invert_dcl, 0, 1 },
|
{ "thinkpad", floppy_invert_dcl, 0, 1 },
|
|
|
{ "nodma", 0, &use_virtual_dma, 1 },
|
{ "nodma", 0, &use_virtual_dma, 1 },
|
{ "omnibook", 0, &use_virtual_dma, 1 },
|
{ "omnibook", 0, &use_virtual_dma, 1 },
|
{ "dma", 0, &use_virtual_dma, 0 },
|
{ "dma", 0, &use_virtual_dma, 0 },
|
|
|
{ "fifo_depth", 0, &fifo_depth, 0xa },
|
{ "fifo_depth", 0, &fifo_depth, 0xa },
|
{ "nofifo", 0, &no_fifo, 0x20 },
|
{ "nofifo", 0, &no_fifo, 0x20 },
|
{ "usefifo", 0, &no_fifo, 0 },
|
{ "usefifo", 0, &no_fifo, 0 },
|
|
|
{ "cmos", set_cmos, 0, 0 },
|
{ "cmos", set_cmos, 0, 0 },
|
|
|
{ "unexpected_interrupts", 0, &print_unex, 1 },
|
{ "unexpected_interrupts", 0, &print_unex, 1 },
|
{ "no_unexpected_interrupts", 0, &print_unex, 0 },
|
{ "no_unexpected_interrupts", 0, &print_unex, 0 },
|
{ "L40SX", 0, &print_unex, 0 } };
|
{ "L40SX", 0, &print_unex, 0 } };
|
|
|
#define FLOPPY_SETUP
|
#define FLOPPY_SETUP
|
void floppy_setup(char *str, int *ints)
|
void floppy_setup(char *str, int *ints)
|
{
|
{
|
int i;
|
int i;
|
int param;
|
int param;
|
if (str)
|
if (str)
|
for (i=0; i< ARRAY_SIZE(config_params); i++){
|
for (i=0; i< ARRAY_SIZE(config_params); i++){
|
if (strcmp(str,config_params[i].name) == 0){
|
if (strcmp(str,config_params[i].name) == 0){
|
if (ints[0])
|
if (ints[0])
|
param = ints[1];
|
param = ints[1];
|
else
|
else
|
param = config_params[i].def_param;
|
param = config_params[i].def_param;
|
if(config_params[i].fn)
|
if(config_params[i].fn)
|
config_params[i].fn(ints,param);
|
config_params[i].fn(ints,param);
|
if(config_params[i].var) {
|
if(config_params[i].var) {
|
DPRINT("%s=%d\n", str, param);
|
DPRINT("%s=%d\n", str, param);
|
*config_params[i].var = param;
|
*config_params[i].var = param;
|
}
|
}
|
return;
|
return;
|
}
|
}
|
}
|
}
|
if (str) {
|
if (str) {
|
DPRINT("unknown floppy option [%s]\n", str);
|
DPRINT("unknown floppy option [%s]\n", str);
|
|
|
DPRINT("allowed options are:");
|
DPRINT("allowed options are:");
|
for (i=0; i< ARRAY_SIZE(config_params); i++)
|
for (i=0; i< ARRAY_SIZE(config_params); i++)
|
printk(" %s",config_params[i].name);
|
printk(" %s",config_params[i].name);
|
printk("\n");
|
printk("\n");
|
} else
|
} else
|
DPRINT("botched floppy option\n");
|
DPRINT("botched floppy option\n");
|
DPRINT("Read linux/arch/arm/drivers/block/README.fd\n");
|
DPRINT("Read linux/arch/arm/drivers/block/README.fd\n");
|
}
|
}
|
|
|
int floppy_init(void)
|
int floppy_init(void)
|
{
|
{
|
int i,unit,drive;
|
int i,unit,drive;
|
int have_no_fdc= -EIO;
|
int have_no_fdc= -EIO;
|
|
|
raw_cmd = NULL;
|
raw_cmd = NULL;
|
|
|
if (register_blkdev(MAJOR_NR,"fd",&floppy_fops)) {
|
if (register_blkdev(MAJOR_NR,"fd",&floppy_fops)) {
|
printk("Unable to get major %d for floppy\n",MAJOR_NR);
|
printk("Unable to get major %d for floppy\n",MAJOR_NR);
|
return -EBUSY;
|
return -EBUSY;
|
}
|
}
|
|
|
for (i=0; i<256; i++)
|
for (i=0; i<256; i++)
|
if (ITYPE(i))
|
if (ITYPE(i))
|
floppy_sizes[i] = floppy_type[ITYPE(i)].size >> 1;
|
floppy_sizes[i] = floppy_type[ITYPE(i)].size >> 1;
|
else
|
else
|
floppy_sizes[i] = MAX_DISK_SIZE;
|
floppy_sizes[i] = MAX_DISK_SIZE;
|
|
|
blk_size[MAJOR_NR] = floppy_sizes;
|
blk_size[MAJOR_NR] = floppy_sizes;
|
blksize_size[MAJOR_NR] = floppy_blocksizes;
|
blksize_size[MAJOR_NR] = floppy_blocksizes;
|
blk_dev[MAJOR_NR].request_fn = DEVICE_REQUEST;
|
blk_dev[MAJOR_NR].request_fn = DEVICE_REQUEST;
|
reschedule_timeout(MAXTIMEOUT, "floppy init", MAXTIMEOUT);
|
reschedule_timeout(MAXTIMEOUT, "floppy init", MAXTIMEOUT);
|
config_types();
|
config_types();
|
|
|
for (i = 0; i < N_FDC; i++) {
|
for (i = 0; i < N_FDC; i++) {
|
fdc = i;
|
fdc = i;
|
CLEARSTRUCT(FDCS);
|
CLEARSTRUCT(FDCS);
|
FDCS->dtr = -1;
|
FDCS->dtr = -1;
|
FDCS->dor = 0x4;
|
FDCS->dor = 0x4;
|
#ifdef __sparc__
|
#ifdef __sparc__
|
/*sparcs don't have a DOR reset which we can fall back on to*/
|
/*sparcs don't have a DOR reset which we can fall back on to*/
|
FDCS->version = FDC_82072A;
|
FDCS->version = FDC_82072A;
|
#endif
|
#endif
|
}
|
}
|
|
|
fdc_state[0].address = FDC1;
|
fdc_state[0].address = FDC1;
|
#if N_FDC > 1
|
#if N_FDC > 1
|
fdc_state[1].address = FDC2;
|
fdc_state[1].address = FDC2;
|
#endif
|
#endif
|
|
|
if (floppy_grab_irq_and_dma()){
|
if (floppy_grab_irq_and_dma()){
|
unregister_blkdev(MAJOR_NR,"fd");
|
unregister_blkdev(MAJOR_NR,"fd");
|
return -EBUSY;
|
return -EBUSY;
|
}
|
}
|
|
|
/* initialise drive state */
|
/* initialise drive state */
|
for (drive = 0; drive < N_DRIVE; drive++) {
|
for (drive = 0; drive < N_DRIVE; drive++) {
|
CLEARSTRUCT(UDRS);
|
CLEARSTRUCT(UDRS);
|
CLEARSTRUCT(UDRWE);
|
CLEARSTRUCT(UDRWE);
|
UDRS->flags = FD_VERIFY | FD_DISK_NEWCHANGE | FD_DISK_CHANGED;
|
UDRS->flags = FD_VERIFY | FD_DISK_NEWCHANGE | FD_DISK_CHANGED;
|
UDRS->fd_device = -1;
|
UDRS->fd_device = -1;
|
floppy_track_buffer = NULL;
|
floppy_track_buffer = NULL;
|
max_buffer_sectors = 0;
|
max_buffer_sectors = 0;
|
}
|
}
|
|
|
for (i = 0; i < N_FDC; i++) {
|
for (i = 0; i < N_FDC; i++) {
|
fdc = i;
|
fdc = i;
|
FDCS->driver_version = FD_DRIVER_VERSION;
|
FDCS->driver_version = FD_DRIVER_VERSION;
|
for (unit=0; unit<4; unit++)
|
for (unit=0; unit<4; unit++)
|
FDCS->track[unit] = 0;
|
FDCS->track[unit] = 0;
|
if (FDCS->address == -1)
|
if (FDCS->address == -1)
|
continue;
|
continue;
|
FDCS->rawcmd = 2;
|
FDCS->rawcmd = 2;
|
if (user_reset_fdc(-1,FD_RESET_ALWAYS,0)){
|
if (user_reset_fdc(-1,FD_RESET_ALWAYS,0)){
|
FDCS->address = -1;
|
FDCS->address = -1;
|
FDCS->version = FDC_NONE;
|
FDCS->version = FDC_NONE;
|
continue;
|
continue;
|
}
|
}
|
/* Try to determine the floppy controller type */
|
/* Try to determine the floppy controller type */
|
FDCS->version = get_fdc_version();
|
FDCS->version = get_fdc_version();
|
if (FDCS->version == FDC_NONE){
|
if (FDCS->version == FDC_NONE){
|
FDCS->address = -1;
|
FDCS->address = -1;
|
continue;
|
continue;
|
}
|
}
|
|
|
request_region(FDCS->address, 6, "floppy");
|
request_region(FDCS->address, 6, "floppy");
|
request_region(FDCS->address+7, 1, "floppy DIR");
|
request_region(FDCS->address+7, 1, "floppy DIR");
|
/* address + 6 is reserved, and may be taken by IDE.
|
/* address + 6 is reserved, and may be taken by IDE.
|
* Unfortunately, Adaptec doesn't know this :-(, */
|
* Unfortunately, Adaptec doesn't know this :-(, */
|
|
|
have_no_fdc = 0;
|
have_no_fdc = 0;
|
/* Not all FDCs seem to be able to handle the version command
|
/* Not all FDCs seem to be able to handle the version command
|
* properly, so force a reset for the standard FDC clones,
|
* properly, so force a reset for the standard FDC clones,
|
* to avoid interrupt garbage.
|
* to avoid interrupt garbage.
|
*/
|
*/
|
user_reset_fdc(-1,FD_RESET_ALWAYS,0);
|
user_reset_fdc(-1,FD_RESET_ALWAYS,0);
|
#ifdef CONFIG_ARM
|
#ifdef CONFIG_ARM
|
fd_scandrives();
|
fd_scandrives();
|
#endif
|
#endif
|
}
|
}
|
fdc=0;
|
fdc=0;
|
del_timer(&fd_timeout);
|
del_timer(&fd_timeout);
|
current_drive = 0;
|
current_drive = 0;
|
floppy_release_irq_and_dma();
|
floppy_release_irq_and_dma();
|
initialising=0;
|
initialising=0;
|
if (have_no_fdc) {
|
if (have_no_fdc) {
|
DPRINT("no floppy controllers found\n");
|
DPRINT("no floppy controllers found\n");
|
unregister_blkdev(MAJOR_NR,"fd");
|
unregister_blkdev(MAJOR_NR,"fd");
|
}
|
}
|
return have_no_fdc;
|
return have_no_fdc;
|
}
|
}
|
|
|
static int floppy_grab_irq_and_dma(void)
|
static int floppy_grab_irq_and_dma(void)
|
{
|
{
|
int i;
|
int i;
|
unsigned long flags;
|
unsigned long flags;
|
|
|
INT_OFF;
|
INT_OFF;
|
if (usage_count++){
|
if (usage_count++){
|
INT_ON;
|
INT_ON;
|
return 0;
|
return 0;
|
}
|
}
|
INT_ON;
|
INT_ON;
|
MOD_INC_USE_COUNT;
|
MOD_INC_USE_COUNT;
|
for (i=0; i< N_FDC; i++){
|
for (i=0; i< N_FDC; i++){
|
if (fdc_state[i].address != -1){
|
if (fdc_state[i].address != -1){
|
fdc = i;
|
fdc = i;
|
reset_fdc_info(1);
|
reset_fdc_info(1);
|
fd_setdor(FDCS->dor);
|
fd_setdor(FDCS->dor);
|
}
|
}
|
}
|
}
|
fdc = 0;
|
fdc = 0;
|
set_dor(0, ~0, 8); /* avoid immediate interrupt */
|
set_dor(0, ~0, 8); /* avoid immediate interrupt */
|
|
|
if (fd_request_irq()) {
|
if (fd_request_irq()) {
|
DPRINT("Unable to grab IRQ%d for the floppy driver\n",
|
DPRINT("Unable to grab IRQ%d for the floppy driver\n",
|
FLOPPY_IRQ);
|
FLOPPY_IRQ);
|
MOD_DEC_USE_COUNT;
|
MOD_DEC_USE_COUNT;
|
usage_count--;
|
usage_count--;
|
return -1;
|
return -1;
|
}
|
}
|
if (fd_request_dma()) {
|
if (fd_request_dma()) {
|
DPRINT("Unable to grab DMA%d for the floppy driver\n",
|
DPRINT("Unable to grab DMA%d for the floppy driver\n",
|
FLOPPY_DMA);
|
FLOPPY_DMA);
|
fd_free_irq();
|
fd_free_irq();
|
MOD_DEC_USE_COUNT;
|
MOD_DEC_USE_COUNT;
|
usage_count--;
|
usage_count--;
|
return -1;
|
return -1;
|
}
|
}
|
for (fdc = 0; fdc < N_FDC; fdc++)
|
for (fdc = 0; fdc < N_FDC; fdc++)
|
if (FDCS->address != -1)
|
if (FDCS->address != -1)
|
fd_setdor(FDCS->dor);
|
fd_setdor(FDCS->dor);
|
fdc = 0;
|
fdc = 0;
|
fd_enable_irq();
|
fd_enable_irq();
|
return 0;
|
return 0;
|
}
|
}
|
|
|
static void floppy_release_irq_and_dma(void)
|
static void floppy_release_irq_and_dma(void)
|
{
|
{
|
#ifdef FLOPPY_SANITY_CHECK
|
#ifdef FLOPPY_SANITY_CHECK
|
int drive;
|
int drive;
|
#endif
|
#endif
|
long tmpsize;
|
long tmpsize;
|
unsigned long tmpaddr;
|
unsigned long tmpaddr;
|
unsigned long flags;
|
unsigned long flags;
|
|
|
INT_OFF;
|
INT_OFF;
|
if (--usage_count){
|
if (--usage_count){
|
INT_ON;
|
INT_ON;
|
return;
|
return;
|
}
|
}
|
INT_ON;
|
INT_ON;
|
fd_disable_dma();
|
fd_disable_dma();
|
fd_free_dma();
|
fd_free_dma();
|
fd_disable_irq();
|
fd_disable_irq();
|
fd_free_irq();
|
fd_free_irq();
|
|
|
set_dor(0, ~0, 8);
|
set_dor(0, ~0, 8);
|
#if N_FDC > 1
|
#if N_FDC > 1
|
set_dor(1, ~8, 0);
|
set_dor(1, ~8, 0);
|
#endif
|
#endif
|
floppy_enable_hlt();
|
floppy_enable_hlt();
|
|
|
if (floppy_track_buffer && max_buffer_sectors) {
|
if (floppy_track_buffer && max_buffer_sectors) {
|
tmpsize = max_buffer_sectors*1024;
|
tmpsize = max_buffer_sectors*1024;
|
tmpaddr = (unsigned long)floppy_track_buffer;
|
tmpaddr = (unsigned long)floppy_track_buffer;
|
floppy_track_buffer = NULL;
|
floppy_track_buffer = NULL;
|
max_buffer_sectors = 0;
|
max_buffer_sectors = 0;
|
buffer_min = buffer_max = -1;
|
buffer_min = buffer_max = -1;
|
fd_dma_mem_free(tmpaddr, tmpsize);
|
fd_dma_mem_free(tmpaddr, tmpsize);
|
}
|
}
|
|
|
#ifdef FLOPPY_SANITY_CHECK
|
#ifdef FLOPPY_SANITY_CHECK
|
for (drive=0; drive < N_FDC * 4; drive++)
|
for (drive=0; drive < N_FDC * 4; drive++)
|
if (motor_off_timer[drive].next)
|
if (motor_off_timer[drive].next)
|
printk("motor off timer %d still active\n", drive);
|
printk("motor off timer %d still active\n", drive);
|
|
|
if (fd_timeout.next)
|
if (fd_timeout.next)
|
printk("floppy timer still active:%s\n", timeout_message);
|
printk("floppy timer still active:%s\n", timeout_message);
|
if (fd_timer.next)
|
if (fd_timer.next)
|
printk("auxiliary floppy timer still active\n");
|
printk("auxiliary floppy timer still active\n");
|
if (floppy_tq.sync)
|
if (floppy_tq.sync)
|
printk("task queue still active\n");
|
printk("task queue still active\n");
|
#endif
|
#endif
|
MOD_DEC_USE_COUNT;
|
MOD_DEC_USE_COUNT;
|
}
|
}
|
|
|
|
|
#ifdef MODULE
|
#ifdef MODULE
|
|
|
extern char *get_options(char *str, int *ints);
|
extern char *get_options(char *str, int *ints);
|
|
|
char *floppy=NULL;
|
char *floppy=NULL;
|
|
|
static void parse_floppy_cfg_string(char *cfg)
|
static void parse_floppy_cfg_string(char *cfg)
|
{
|
{
|
char *ptr;
|
char *ptr;
|
int ints[11];
|
int ints[11];
|
|
|
while(*cfg) {
|
while(*cfg) {
|
for(ptr = cfg;*cfg && *cfg != ' ' && *cfg != '\t'; cfg++);
|
for(ptr = cfg;*cfg && *cfg != ' ' && *cfg != '\t'; cfg++);
|
if(*cfg) {
|
if(*cfg) {
|
*cfg = '\0';
|
*cfg = '\0';
|
cfg++;
|
cfg++;
|
}
|
}
|
if(*ptr)
|
if(*ptr)
|
floppy_setup(get_options(ptr,ints),ints);
|
floppy_setup(get_options(ptr,ints),ints);
|
}
|
}
|
}
|
}
|
|
|
static void mod_setup(char *pattern, void (*setup)(char *, int *))
|
static void mod_setup(char *pattern, void (*setup)(char *, int *))
|
{
|
{
|
unsigned long i;
|
unsigned long i;
|
char c;
|
char c;
|
int j;
|
int j;
|
int match;
|
int match;
|
char buffer[100];
|
char buffer[100];
|
int ints[11];
|
int ints[11];
|
int length = strlen(pattern)+1;
|
int length = strlen(pattern)+1;
|
|
|
match=0;
|
match=0;
|
j=1;
|
j=1;
|
|
|
for (i=current->mm->env_start; i< current->mm->env_end; i ++){
|
for (i=current->mm->env_start; i< current->mm->env_end; i ++){
|
c= get_fs_byte(i);
|
c= get_fs_byte(i);
|
if (match){
|
if (match){
|
if (j==99)
|
if (j==99)
|
c='\0';
|
c='\0';
|
buffer[j] = c;
|
buffer[j] = c;
|
if (!c || c == ' ' || c == '\t'){
|
if (!c || c == ' ' || c == '\t'){
|
if (j){
|
if (j){
|
buffer[j] = '\0';
|
buffer[j] = '\0';
|
setup(get_options(buffer,ints),ints);
|
setup(get_options(buffer,ints),ints);
|
}
|
}
|
j=0;
|
j=0;
|
} else
|
} else
|
j++;
|
j++;
|
if (!c)
|
if (!c)
|
break;
|
break;
|
continue;
|
continue;
|
}
|
}
|
if ((!j && !c) || (j && c == pattern[j-1]))
|
if ((!j && !c) || (j && c == pattern[j-1]))
|
j++;
|
j++;
|
else
|
else
|
j=0;
|
j=0;
|
if (j==length){
|
if (j==length){
|
match=1;
|
match=1;
|
j=0;
|
j=0;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
|
|
#ifdef __cplusplus
|
#ifdef __cplusplus
|
extern "C" {
|
extern "C" {
|
#endif
|
#endif
|
int init_module(void)
|
int init_module(void)
|
{
|
{
|
printk(KERN_INFO "inserting floppy driver for %s\n", kernel_version);
|
printk(KERN_INFO "inserting floppy driver for %s\n", kernel_version);
|
|
|
if(floppy)
|
if(floppy)
|
parse_floppy_cfg_string(floppy);
|
parse_floppy_cfg_string(floppy);
|
else
|
else
|
mod_setup("floppy=", floppy_setup);
|
mod_setup("floppy=", floppy_setup);
|
|
|
return floppy_init();
|
return floppy_init();
|
}
|
}
|
|
|
void cleanup_module(void)
|
void cleanup_module(void)
|
{
|
{
|
int fdc, dummy;
|
int fdc, dummy;
|
|
|
for (fdc=0; fdc<2; fdc++)
|
for (fdc=0; fdc<2; fdc++)
|
if (FDCS->address != -1){
|
if (FDCS->address != -1){
|
release_region(FDCS->address, 6);
|
release_region(FDCS->address, 6);
|
release_region(FDCS->address+7, 1);
|
release_region(FDCS->address+7, 1);
|
}
|
}
|
|
|
unregister_blkdev(MAJOR_NR, "fd");
|
unregister_blkdev(MAJOR_NR, "fd");
|
|
|
blk_dev[MAJOR_NR].request_fn = 0;
|
blk_dev[MAJOR_NR].request_fn = 0;
|
/* eject disk, if any */
|
/* eject disk, if any */
|
dummy = fd_eject(0);
|
dummy = fd_eject(0);
|
}
|
}
|
|
|
#ifdef __cplusplus
|
#ifdef __cplusplus
|
}
|
}
|
#endif
|
#endif
|
|
|
#else
|
#else
|
/* eject the boot floppy (if we need the drive for a different root floppy) */
|
/* eject the boot floppy (if we need the drive for a different root floppy) */
|
/* This should only be called at boot time when we're sure that there's no
|
/* This should only be called at boot time when we're sure that there's no
|
* resource contention. */
|
* resource contention. */
|
void floppy_eject(void)
|
void floppy_eject(void)
|
{
|
{
|
int dummy;
|
int dummy;
|
floppy_grab_irq_and_dma();
|
floppy_grab_irq_and_dma();
|
lock_fdc(MAXTIMEOUT,0);
|
lock_fdc(MAXTIMEOUT,0);
|
dummy=fd_eject(0);
|
dummy=fd_eject(0);
|
process_fd_request();
|
process_fd_request();
|
floppy_release_irq_and_dma();
|
floppy_release_irq_and_dma();
|
}
|
}
|
#endif
|
#endif
|
|
|
