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path: root/drivers/block/floppy.c
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-rw-r--r--drivers/block/floppy.c1889
1 files changed, 968 insertions, 921 deletions
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 6f2856c6d0f2..c28786e0fe1c 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* linux/drivers/block/floppy.c
*
@@ -144,8 +145,6 @@
* Better audit of register_blkdev.
*/
-#undef FLOPPY_SILENT_DCL_CLEAR
-
#define REALLY_SLOW_IO
#define DEBUGT 2
@@ -164,35 +163,35 @@
/* do print messages for unexpected interrupts */
static int print_unex = 1;
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-#include <linux/kernel.h>
-#include <linux/timer.h>
-#include <linux/workqueue.h>
-#define FDPATCHES
-#include <linux/fdreg.h>
+#include <linux/async.h>
+#include <linux/bio.h>
+#include <linux/compat.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/fcntl.h>
#include <linux/fd.h>
+#include <linux/fdreg.h>
+#include <linux/fs.h>
#include <linux/hdreg.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/bio.h>
-#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
#include <linux/jiffies.h>
-#include <linux/fcntl.h>
-#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
#include <linux/mc146818rtc.h> /* CMOS defines */
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
+#include <linux/mm.h>
#include <linux/mod_devicetable.h>
+#include <linux/module.h>
#include <linux/mutex.h>
-#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/timer.h>
#include <linux/uaccess.h>
-#include <linux/async.h>
-#include <linux/compat.h>
+#include <linux/workqueue.h>
/*
* PS/2 floppies have much slower step rates than regular floppies.
@@ -234,8 +233,6 @@ static unsigned short virtual_dma_port = 0x3f0;
irqreturn_t floppy_interrupt(int irq, void *dev_id);
static int set_dor(int fdc, char mask, char data);
-#define K_64 0x10000 /* 64KB */
-
/* the following is the mask of allowed drives. By default units 2 and
* 3 of both floppy controllers are disabled, because switching on the
* motor of these drives causes system hangs on some PCI computers. drive
@@ -305,36 +302,26 @@ static bool initialized;
/* reverse mapping from unit and fdc to drive */
#define REVDRIVE(fdc, unit) ((unit) + ((fdc) << 2))
-#define DP (&drive_params[current_drive])
-#define DRS (&drive_state[current_drive])
-#define DRWE (&write_errors[current_drive])
-#define FDCS (&fdc_state[fdc])
-
-#define UDP (&drive_params[drive])
-#define UDRS (&drive_state[drive])
-#define UDRWE (&write_errors[drive])
-#define UFDCS (&fdc_state[FDC(drive)])
-
#define PH_HEAD(floppy, head) (((((floppy)->stretch & 2) >> 1) ^ head) << 2)
#define STRETCH(floppy) ((floppy)->stretch & FD_STRETCH)
-/* read/write */
-#define COMMAND (raw_cmd->cmd[0])
-#define DR_SELECT (raw_cmd->cmd[1])
-#define TRACK (raw_cmd->cmd[2])
-#define HEAD (raw_cmd->cmd[3])
-#define SECTOR (raw_cmd->cmd[4])
-#define SIZECODE (raw_cmd->cmd[5])
-#define SECT_PER_TRACK (raw_cmd->cmd[6])
-#define GAP (raw_cmd->cmd[7])
-#define SIZECODE2 (raw_cmd->cmd[8])
+/* read/write commands */
+#define COMMAND 0
+#define DR_SELECT 1
+#define TRACK 2
+#define HEAD 3
+#define SECTOR 4
+#define SIZECODE 5
+#define SECT_PER_TRACK 6
+#define GAP 7
+#define SIZECODE2 8
#define NR_RW 9
-/* format */
-#define F_SIZECODE (raw_cmd->cmd[2])
-#define F_SECT_PER_TRACK (raw_cmd->cmd[3])
-#define F_GAP (raw_cmd->cmd[4])
-#define F_FILL (raw_cmd->cmd[5])
+/* format commands */
+#define F_SIZECODE 2
+#define F_SECT_PER_TRACK 3
+#define F_GAP 4
+#define F_FILL 5
#define NR_F 6
/*
@@ -342,22 +329,21 @@ static bool initialized;
* This default is used whenever the current disk size is unknown.
* [Now it is rather a minimum]
*/
-#define MAX_DISK_SIZE 4 /* 3984 */
+#define MAX_DISK_SIZE (PAGE_SIZE / 1024)
/*
* globals used by 'result()'
*/
-#define MAX_REPLIES 16
-static unsigned char reply_buffer[MAX_REPLIES];
+static unsigned char reply_buffer[FD_RAW_REPLY_SIZE];
static int inr; /* size of reply buffer, when called from interrupt */
-#define ST0 (reply_buffer[0])
-#define ST1 (reply_buffer[1])
-#define ST2 (reply_buffer[2])
-#define ST3 (reply_buffer[0]) /* result of GETSTATUS */
-#define R_TRACK (reply_buffer[3])
-#define R_HEAD (reply_buffer[4])
-#define R_SECTOR (reply_buffer[5])
-#define R_SIZECODE (reply_buffer[6])
+#define ST0 0
+#define ST1 1
+#define ST2 2
+#define ST3 0 /* result of GETSTATUS */
+#define R_TRACK 3
+#define R_HEAD 4
+#define R_SECTOR 5
+#define R_SIZECODE 6
#define SEL_DLY (2 * HZ / 100)
@@ -413,9 +399,8 @@ static struct floppy_drive_params drive_params[N_DRIVE];
static struct floppy_drive_struct drive_state[N_DRIVE];
static struct floppy_write_errors write_errors[N_DRIVE];
static struct timer_list motor_off_timer[N_DRIVE];
-static struct gendisk *disks[N_DRIVE];
static struct blk_mq_tag_set tag_sets[N_DRIVE];
-static struct block_device *opened_bdev[N_DRIVE];
+static struct gendisk *opened_disk[N_DRIVE];
static DEFINE_MUTEX(open_lock);
static struct floppy_raw_cmd *raw_cmd, default_raw_cmd;
@@ -488,6 +473,8 @@ static struct floppy_struct floppy_type[32] = {
{ 3200,20,2,80,0,0x1C,0x00,0xCF,0x2C,"H1600" }, /* 31 1.6MB 3.5" */
};
+static struct gendisk *disks[N_DRIVE][ARRAY_SIZE(floppy_type)];
+
#define SECTSIZE (_FD_SECTSIZE(*floppy))
/* Auto-detection: Disk type used until the next media change occurs. */
@@ -520,8 +507,8 @@ static unsigned long fdc_busy;
static DECLARE_WAIT_QUEUE_HEAD(fdc_wait);
static DECLARE_WAIT_QUEUE_HEAD(command_done);
-/* Errors during formatting are counted here. */
-static int format_errors;
+/* errors encountered on the current (or last) request */
+static int floppy_errors;
/* Format request descriptor. */
static struct format_descr format_req;
@@ -541,15 +528,13 @@ static struct format_descr format_req;
static char *floppy_track_buffer;
static int max_buffer_sectors;
-static int *errors;
-typedef void (*done_f)(int);
static const struct cont_t {
void (*interrupt)(void);
/* this is called after the interrupt of the
* main command */
void (*redo)(void); /* this is called to retry the operation */
void (*error)(void); /* this is called to tally an error */
- done_f done; /* this is called to say if the operation has
+ void (*done)(int); /* this is called to say if the operation has
* succeeded/failed */
} *cont;
@@ -572,6 +557,7 @@ static void floppy_release_irq_and_dma(void);
* output_byte is automatically disabled when reset is set.
*/
static void reset_fdc(void);
+static int floppy_revalidate(struct gendisk *disk);
/*
* These are global variables, as that's the easiest way to give
@@ -592,7 +578,7 @@ static int buffer_max = -1;
/* fdc related variables, should end up in a struct */
static struct floppy_fdc_state fdc_state[N_FDC];
-static int fdc; /* current fdc */
+static int current_fdc; /* current fdc */
static struct workqueue_struct *floppy_wq;
@@ -603,9 +589,19 @@ static unsigned char fsector_t; /* sector in track */
static unsigned char in_sector_offset; /* offset within physical sector,
* expressed in units of 512 bytes */
+static inline unsigned char fdc_inb(int fdc, int reg)
+{
+ return fd_inb(fdc_state[fdc].address, reg);
+}
+
+static inline void fdc_outb(unsigned char value, int fdc, int reg)
+{
+ fd_outb(value, fdc_state[fdc].address, reg);
+}
+
static inline bool drive_no_geom(int drive)
{
- return !current_type[drive] && !ITYPE(UDRS->fd_device);
+ return !current_type[drive] && !ITYPE(drive_state[drive].fd_device);
}
#ifndef fd_eject
@@ -629,7 +625,7 @@ static inline void set_debugt(void)
static inline void debugt(const char *func, const char *msg)
{
- if (DP->flags & DEBUGT)
+ if (drive_params[current_drive].flags & DEBUGT)
pr_info("%s:%s dtime=%lu\n", func, msg, jiffies - debugtimer);
}
#else
@@ -668,24 +664,20 @@ static struct output_log {
static int output_log_pos;
-#define current_reqD -1
#define MAXTIMEOUT -2
static void __reschedule_timeout(int drive, const char *message)
{
unsigned long delay;
- if (drive == current_reqD)
- drive = current_drive;
-
if (drive < 0 || drive >= N_DRIVE) {
delay = 20UL * HZ;
drive = 0;
} else
- delay = UDP->timeout;
+ delay = drive_params[drive].timeout;
mod_delayed_work(floppy_wq, &fd_timeout, delay);
- if (UDP->flags & FD_DEBUG)
+ if (drive_params[drive].flags & FD_DEBUG)
DPRINT("reschedule timeout %s\n", message);
timeout_message = message;
}
@@ -739,33 +731,37 @@ static int disk_change(int drive)
{
int fdc = FDC(drive);
- if (time_before(jiffies, UDRS->select_date + UDP->select_delay))
+ if (time_before(jiffies, drive_state[drive].select_date + drive_params[drive].select_delay))
DPRINT("WARNING disk change called early\n");
- if (!(FDCS->dor & (0x10 << UNIT(drive))) ||
- (FDCS->dor & 3) != UNIT(drive) || fdc != FDC(drive)) {
+ if (!(fdc_state[fdc].dor & (0x10 << UNIT(drive))) ||
+ (fdc_state[fdc].dor & 3) != UNIT(drive) || fdc != FDC(drive)) {
DPRINT("probing disk change on unselected drive\n");
DPRINT("drive=%d fdc=%d dor=%x\n", drive, FDC(drive),
- (unsigned int)FDCS->dor);
+ (unsigned int)fdc_state[fdc].dor);
}
- debug_dcl(UDP->flags,
+ debug_dcl(drive_params[drive].flags,
"checking disk change line for drive %d\n", drive);
- debug_dcl(UDP->flags, "jiffies=%lu\n", jiffies);
- debug_dcl(UDP->flags, "disk change line=%x\n", fd_inb(FD_DIR) & 0x80);
- debug_dcl(UDP->flags, "flags=%lx\n", UDRS->flags);
-
- if (UDP->flags & FD_BROKEN_DCL)
- return test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags);
- if ((fd_inb(FD_DIR) ^ UDP->flags) & 0x80) {
- set_bit(FD_VERIFY_BIT, &UDRS->flags);
+ debug_dcl(drive_params[drive].flags, "jiffies=%lu\n", jiffies);
+ debug_dcl(drive_params[drive].flags, "disk change line=%x\n",
+ fdc_inb(fdc, FD_DIR) & 0x80);
+ debug_dcl(drive_params[drive].flags, "flags=%lx\n",
+ drive_state[drive].flags);
+
+ if (drive_params[drive].flags & FD_BROKEN_DCL)
+ return test_bit(FD_DISK_CHANGED_BIT,
+ &drive_state[drive].flags);
+ if ((fdc_inb(fdc, FD_DIR) ^ drive_params[drive].flags) & 0x80) {
+ set_bit(FD_VERIFY_BIT, &drive_state[drive].flags);
/* verify write protection */
- if (UDRS->maxblock) /* mark it changed */
- set_bit(FD_DISK_CHANGED_BIT, &UDRS->flags);
+ if (drive_state[drive].maxblock) /* mark it changed */
+ set_bit(FD_DISK_CHANGED_BIT,
+ &drive_state[drive].flags);
/* invalidate its geometry */
- if (UDRS->keep_data >= 0) {
- if ((UDP->flags & FTD_MSG) &&
+ if (drive_state[drive].keep_data >= 0) {
+ if ((drive_params[drive].flags & FTD_MSG) &&
current_type[drive] != NULL)
DPRINT("Disk type is undefined after disk change\n");
current_type[drive] = NULL;
@@ -774,8 +770,8 @@ static int disk_change(int drive)
return 1;
} else {
- UDRS->last_checked = jiffies;
- clear_bit(FD_DISK_NEWCHANGE_BIT, &UDRS->flags);
+ drive_state[drive].last_checked = jiffies;
+ clear_bit(FD_DISK_NEWCHANGE_BIT, &drive_state[drive].flags);
}
return 0;
}
@@ -798,79 +794,95 @@ static int set_dor(int fdc, char mask, char data)
unsigned char newdor;
unsigned char olddor;
- if (FDCS->address == -1)
+ if (fdc_state[fdc].address == -1)
return -1;
- olddor = FDCS->dor;
+ olddor = fdc_state[fdc].dor;
newdor = (olddor & mask) | data;
if (newdor != olddor) {
unit = olddor & 0x3;
if (is_selected(olddor, unit) && !is_selected(newdor, unit)) {
drive = REVDRIVE(fdc, unit);
- debug_dcl(UDP->flags,
+ debug_dcl(drive_params[drive].flags,
"calling disk change from set_dor\n");
disk_change(drive);
}
- FDCS->dor = newdor;
- fd_outb(newdor, FD_DOR);
+ fdc_state[fdc].dor = newdor;
+ fdc_outb(newdor, fdc, FD_DOR);
unit = newdor & 0x3;
if (!is_selected(olddor, unit) && is_selected(newdor, unit)) {
drive = REVDRIVE(fdc, unit);
- UDRS->select_date = jiffies;
+ drive_state[drive].select_date = jiffies;
}
}
return olddor;
}
-static void twaddle(void)
+static void twaddle(int fdc, int drive)
{
- if (DP->select_delay)
+ if (drive_params[drive].select_delay)
return;
- fd_outb(FDCS->dor & ~(0x10 << UNIT(current_drive)), FD_DOR);
- fd_outb(FDCS->dor, FD_DOR);
- DRS->select_date = jiffies;
+ fdc_outb(fdc_state[fdc].dor & ~(0x10 << UNIT(drive)),
+ fdc, FD_DOR);
+ fdc_outb(fdc_state[fdc].dor, fdc, FD_DOR);
+ drive_state[drive].select_date = jiffies;
}
/*
- * Reset all driver information about the current fdc.
+ * Reset all driver information about the specified fdc.
* This is needed after a reset, and after a raw command.
*/
-static void reset_fdc_info(int mode)
+static void reset_fdc_info(int fdc, int mode)
{
int drive;
- FDCS->spec1 = FDCS->spec2 = -1;
- FDCS->need_configure = 1;
- FDCS->perp_mode = 1;
- FDCS->rawcmd = 0;
+ fdc_state[fdc].spec1 = fdc_state[fdc].spec2 = -1;
+ fdc_state[fdc].need_configure = 1;
+ fdc_state[fdc].perp_mode = 1;
+ fdc_state[fdc].rawcmd = 0;
for (drive = 0; drive < N_DRIVE; drive++)
- if (FDC(drive) == fdc && (mode || UDRS->track != NEED_1_RECAL))
- UDRS->track = NEED_2_RECAL;
+ if (FDC(drive) == fdc &&
+ (mode || drive_state[drive].track != NEED_1_RECAL))
+ drive_state[drive].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.
+ * Both current_drive and current_fdc are changed to match the new drive.
+ */
static void set_fdc(int drive)
{
- if (drive >= 0 && drive < N_DRIVE) {
- fdc = FDC(drive);
- current_drive = drive;
+ unsigned int fdc;
+
+ if (drive < 0 || drive >= N_DRIVE) {
+ pr_info("bad drive value %d\n", drive);
+ return;
}
- if (fdc != 1 && fdc != 0) {
+
+ fdc = FDC(drive);
+ if (fdc >= N_FDC) {
pr_info("bad fdc value\n");
return;
}
+
set_dor(fdc, ~0, 8);
#if N_FDC > 1
set_dor(1 - fdc, ~8, 0);
#endif
- if (FDCS->rawcmd == 2)
- reset_fdc_info(1);
- if (fd_inb(FD_STATUS) != STATUS_READY)
- FDCS->reset = 1;
+ if (fdc_state[fdc].rawcmd == 2)
+ reset_fdc_info(fdc, 1);
+ if (fdc_inb(fdc, FD_STATUS) != STATUS_READY)
+ fdc_state[fdc].reset = 1;
+
+ current_drive = drive;
+ current_fdc = fdc;
}
-/* locks the driver */
+/*
+ * locks the driver.
+ * Both current_drive and current_fdc are changed to match the new drive.
+ */
static int lock_fdc(int drive)
{
if (WARN(atomic_read(&usage_count) == 0,
@@ -920,19 +932,19 @@ static void floppy_off(unsigned int drive)
unsigned long volatile delta;
int fdc = FDC(drive);
- if (!(FDCS->dor & (0x10 << UNIT(drive))))
+ if (!(fdc_state[fdc].dor & (0x10 << UNIT(drive))))
return;
- del_timer(motor_off_timer + drive);
+ timer_delete(motor_off_timer + drive);
/* make spindle stop in a position which minimizes spinup time
* next time */
- if (UDP->rps) {
- delta = jiffies - UDRS->first_read_date + HZ -
- UDP->spindown_offset;
- delta = ((delta * UDP->rps) % HZ) / UDP->rps;
+ if (drive_params[drive].rps) {
+ delta = jiffies - drive_state[drive].first_read_date + HZ -
+ drive_params[drive].spindown_offset;
+ delta = ((delta * drive_params[drive].rps) % HZ) / drive_params[drive].rps;
motor_off_timer[drive].expires =
- jiffies + UDP->spindown - delta;
+ jiffies + drive_params[drive].spindown - delta;
}
add_timer(motor_off_timer + drive);
}
@@ -948,20 +960,20 @@ static void scandrives(void)
int drive;
int saved_drive;
- if (DP->select_delay)
+ if (drive_params[current_drive].select_delay)
return;
saved_drive = current_drive;
for (i = 0; i < N_DRIVE; i++) {
drive = (saved_drive + i + 1) % N_DRIVE;
- if (UDRS->fd_ref == 0 || UDP->select_delay != 0)
+ if (drive_state[drive].fd_ref == 0 || drive_params[drive].select_delay != 0)
continue; /* skip closed drives */
set_fdc(drive);
- if (!(set_dor(fdc, ~3, UNIT(drive) | (0x10 << UNIT(drive))) &
+ if (!(set_dor(current_fdc, ~3, UNIT(drive) | (0x10 << UNIT(drive))) &
(0x10 << UNIT(drive))))
/* switch the motor off again, if it was off to
* begin with */
- set_dor(fdc, ~(0x10 << UNIT(drive)), 0);
+ set_dor(current_fdc, ~(0x10 << UNIT(drive)), 0);
}
set_fdc(saved_drive);
}
@@ -970,6 +982,10 @@ static void empty(void)
{
}
+static void empty_done(int result)
+{
+}
+
static void (*floppy_work_fn)(void);
static void floppy_work_workfn(struct work_struct *work)
@@ -999,7 +1015,7 @@ static DECLARE_DELAYED_WORK(fd_timer, fd_timer_workfn);
static void cancel_activity(void)
{
do_floppy = NULL;
- cancel_delayed_work_sync(&fd_timer);
+ cancel_delayed_work(&fd_timer);
cancel_work_sync(&floppy_work);
}
@@ -1007,7 +1023,8 @@ static void cancel_activity(void)
* transfer */
static void fd_watchdog(void)
{
- debug_dcl(DP->flags, "calling disk change from watchdog\n");
+ debug_dcl(drive_params[current_drive].flags,
+ "calling disk change from watchdog\n");
if (disk_change(current_drive)) {
DPRINT("disk removed during i/o\n");
@@ -1031,7 +1048,7 @@ static void main_command_interrupt(void)
static int fd_wait_for_completion(unsigned long expires,
void (*function)(void))
{
- if (FDCS->reset) {
+ if (fdc_state[current_fdc].reset) {
reset_fdc(); /* do the reset during sleep to win time
* if we don't need to sleep, it's a good
* occasion anyways */
@@ -1052,20 +1069,17 @@ static void setup_DMA(void)
unsigned long f;
if (raw_cmd->length == 0) {
- int i;
-
- pr_info("zero dma transfer size:");
- for (i = 0; i < raw_cmd->cmd_count; i++)
- pr_cont("%x,", raw_cmd->cmd[i]);
- pr_cont("\n");
+ print_hex_dump(KERN_INFO, "zero dma transfer size: ",
+ DUMP_PREFIX_NONE, 16, 1,
+ raw_cmd->fullcmd, raw_cmd->cmd_count, false);
cont->done(0);
- FDCS->reset = 1;
+ fdc_state[current_fdc].reset = 1;
return;
}
if (((unsigned long)raw_cmd->kernel_data) % 512) {
pr_info("non aligned address: %p\n", raw_cmd->kernel_data);
cont->done(0);
- FDCS->reset = 1;
+ fdc_state[current_fdc].reset = 1;
return;
}
f = claim_dma_lock();
@@ -1073,10 +1087,11 @@ static void setup_DMA(void)
#ifdef fd_dma_setup
if (fd_dma_setup(raw_cmd->kernel_data, raw_cmd->length,
(raw_cmd->flags & FD_RAW_READ) ?
- DMA_MODE_READ : DMA_MODE_WRITE, FDCS->address) < 0) {
+ DMA_MODE_READ : DMA_MODE_WRITE,
+ fdc_state[current_fdc].address) < 0) {
release_dma_lock(f);
cont->done(0);
- FDCS->reset = 1;
+ fdc_state[current_fdc].reset = 1;
return;
}
release_dma_lock(f);
@@ -1087,68 +1102,68 @@ static void setup_DMA(void)
DMA_MODE_READ : DMA_MODE_WRITE);
fd_set_dma_addr(raw_cmd->kernel_data);
fd_set_dma_count(raw_cmd->length);
- virtual_dma_port = FDCS->address;
+ virtual_dma_port = fdc_state[current_fdc].address;
fd_enable_dma();
release_dma_lock(f);
#endif
}
-static void show_floppy(void);
+static void show_floppy(int fdc);
/* waits until the fdc becomes ready */
-static int wait_til_ready(void)
+static int wait_til_ready(int fdc)
{
int status;
int counter;
- if (FDCS->reset)
+ if (fdc_state[fdc].reset)
return -1;
for (counter = 0; counter < 10000; counter++) {
- status = fd_inb(FD_STATUS);
+ status = fdc_inb(fdc, FD_STATUS);
if (status & STATUS_READY)
return status;
}
if (initialized) {
DPRINT("Getstatus times out (%x) on fdc %d\n", status, fdc);
- show_floppy();
+ show_floppy(fdc);
}
- FDCS->reset = 1;
+ fdc_state[fdc].reset = 1;
return -1;
}
/* sends a command byte to the fdc */
-static int output_byte(char byte)
+static int output_byte(int fdc, char byte)
{
- int status = wait_til_ready();
+ int status = wait_til_ready(fdc);
if (status < 0)
return -1;
if (is_ready_state(status)) {
- fd_outb(byte, FD_DATA);
+ fdc_outb(byte, fdc, FD_DATA);
output_log[output_log_pos].data = byte;
output_log[output_log_pos].status = status;
output_log[output_log_pos].jiffies = jiffies;
output_log_pos = (output_log_pos + 1) % OLOGSIZE;
return 0;
}
- FDCS->reset = 1;
+ fdc_state[fdc].reset = 1;
if (initialized) {
DPRINT("Unable to send byte %x to FDC. Fdc=%x Status=%x\n",
byte, fdc, status);
- show_floppy();
+ show_floppy(fdc);
}
return -1;
}
/* gets the response from the fdc */
-static int result(void)
+static int result(int fdc)
{
int i;
int status = 0;
- for (i = 0; i < MAX_REPLIES; i++) {
- status = wait_til_ready();
+ for (i = 0; i < FD_RAW_REPLY_SIZE; i++) {
+ status = wait_til_ready(fdc);
if (status < 0)
break;
status &= STATUS_DIR | STATUS_READY | STATUS_BUSY | STATUS_DMA;
@@ -1158,24 +1173,24 @@ static int result(void)
return i;
}
if (status == (STATUS_DIR | STATUS_READY | STATUS_BUSY))
- reply_buffer[i] = fd_inb(FD_DATA);
+ reply_buffer[i] = fdc_inb(fdc, FD_DATA);
else
break;
}
if (initialized) {
DPRINT("get result error. Fdc=%d Last status=%x Read bytes=%d\n",
fdc, status, i);
- show_floppy();
+ show_floppy(fdc);
}
- FDCS->reset = 1;
+ fdc_state[fdc].reset = 1;
return -1;
}
#define MORE_OUTPUT -2
/* does the fdc need more output? */
-static int need_more_output(void)
+static int need_more_output(int fdc)
{
- int status = wait_til_ready();
+ int status = wait_til_ready(fdc);
if (status < 0)
return -1;
@@ -1183,13 +1198,13 @@ static int need_more_output(void)
if (is_ready_state(status))
return MORE_OUTPUT;
- return result();
+ return result(fdc);
}
/* Set perpendicular mode as required, based on data rate, if supported.
* 82077 Now tested. 1Mbps data rate only possible with 82077-1.
*/
-static void perpendicular_mode(void)
+static void perpendicular_mode(int fdc)
{
unsigned char perp_mode;
@@ -1204,7 +1219,7 @@ static void perpendicular_mode(void)
default:
DPRINT("Invalid data rate for perpendicular mode!\n");
cont->done(0);
- FDCS->reset = 1;
+ fdc_state[fdc].reset = 1;
/*
* convenient way to return to
* redo without too much hassle
@@ -1215,12 +1230,12 @@ static void perpendicular_mode(void)
} else
perp_mode = 0;
- if (FDCS->perp_mode == perp_mode)
+ if (fdc_state[fdc].perp_mode == perp_mode)
return;
- if (FDCS->version >= FDC_82077_ORIG) {
- output_byte(FD_PERPENDICULAR);
- output_byte(perp_mode);
- FDCS->perp_mode = perp_mode;
+ if (fdc_state[fdc].version >= FDC_82077_ORIG) {
+ output_byte(fdc, FD_PERPENDICULAR);
+ output_byte(fdc, perp_mode);
+ fdc_state[fdc].perp_mode = perp_mode;
} else if (perp_mode) {
DPRINT("perpendicular mode not supported by this FDC.\n");
}
@@ -1229,16 +1244,15 @@ static void perpendicular_mode(void)
static int fifo_depth = 0xa;
static int no_fifo;
-static int fdc_configure(void)
+static int fdc_configure(int fdc)
{
/* Turn on FIFO */
- output_byte(FD_CONFIGURE);
- if (need_more_output() != MORE_OUTPUT)
+ output_byte(fdc, FD_CONFIGURE);
+ if (need_more_output(fdc) != MORE_OUTPUT)
return 0;
- output_byte(0);
- output_byte(0x10 | (no_fifo & 0x20) | (fifo_depth & 0xf));
- output_byte(0); /* pre-compensation from track
- 0 upwards */
+ output_byte(fdc, 0);
+ output_byte(fdc, 0x10 | (no_fifo & 0x20) | (fifo_depth & 0xf));
+ output_byte(fdc, 0); /* pre-compensation from track 0 upwards */
return 1;
}
@@ -1263,7 +1277,7 @@ static int fdc_configure(void)
*
* These values are rounded up to the next highest available delay time.
*/
-static void fdc_specify(void)
+static void fdc_specify(int fdc, int drive)
{
unsigned char spec1;
unsigned char spec2;
@@ -1275,9 +1289,10 @@ static void fdc_specify(void)
int hlt_max_code = 0x7f;
int hut_max_code = 0xf;
- if (FDCS->need_configure && FDCS->version >= FDC_82072A) {
- fdc_configure();
- FDCS->need_configure = 0;
+ if (fdc_state[fdc].need_configure &&
+ fdc_state[fdc].version >= FDC_82072A) {
+ fdc_configure(fdc);
+ fdc_state[fdc].need_configure = 0;
}
switch (raw_cmd->rate & 0x03) {
@@ -1286,13 +1301,13 @@ static void fdc_specify(void)
break;
case 1:
dtr = 300;
- if (FDCS->version >= FDC_82078) {
+ if (fdc_state[fdc].version >= FDC_82078) {
/* chose the default rate table, not the one
* where 1 = 2 Mbps */
- output_byte(FD_DRIVESPEC);
- if (need_more_output() == MORE_OUTPUT) {
- output_byte(UNIT(current_drive));
- output_byte(0xc0);
+ output_byte(fdc, FD_DRIVESPEC);
+ if (need_more_output(fdc) == MORE_OUTPUT) {
+ output_byte(fdc, UNIT(drive));
+ output_byte(fdc, 0xc0);
}
}
break;
@@ -1301,27 +1316,30 @@ static void fdc_specify(void)
break;
}
- if (FDCS->version >= FDC_82072) {
+ if (fdc_state[fdc].version >= FDC_82072) {
scale_dtr = dtr;
hlt_max_code = 0x00; /* 0==256msec*dtr0/dtr (not linear!) */
hut_max_code = 0x0; /* 0==256msec*dtr0/dtr (not linear!) */
}
/* Convert step rate from microseconds to milliseconds and 4 bits */
- srt = 16 - DIV_ROUND_UP(DP->srt * scale_dtr / 1000, NOMINAL_DTR);
+ srt = 16 - DIV_ROUND_UP(drive_params[drive].srt * scale_dtr / 1000,
+ NOMINAL_DTR);
if (slow_floppy)
srt = srt / 4;
SUPBOUND(srt, 0xf);
INFBOUND(srt, 0);
- hlt = DIV_ROUND_UP(DP->hlt * scale_dtr / 2, NOMINAL_DTR);
+ hlt = DIV_ROUND_UP(drive_params[drive].hlt * scale_dtr / 2,
+ NOMINAL_DTR);
if (hlt < 0x01)
hlt = 0x01;
else if (hlt > 0x7f)
hlt = hlt_max_code;
- hut = DIV_ROUND_UP(DP->hut * scale_dtr / 16, NOMINAL_DTR);
+ hut = DIV_ROUND_UP(drive_params[drive].hut * scale_dtr / 16,
+ NOMINAL_DTR);
if (hut < 0x1)
hut = 0x1;
else if (hut > 0xf)
@@ -1331,11 +1349,12 @@ static void fdc_specify(void)
spec2 = (hlt << 1) | (use_virtual_dma & 1);
/* If these parameters did not change, just return with success */
- if (FDCS->spec1 != spec1 || FDCS->spec2 != spec2) {
+ if (fdc_state[fdc].spec1 != spec1 ||
+ fdc_state[fdc].spec2 != spec2) {
/* Go ahead and set spec1 and spec2 */
- output_byte(FD_SPECIFY);
- output_byte(FDCS->spec1 = spec1);
- output_byte(FDCS->spec2 = spec2);
+ output_byte(fdc, FD_SPECIFY);
+ output_byte(fdc, fdc_state[fdc].spec1 = spec1);
+ output_byte(fdc, fdc_state[fdc].spec2 = spec2);
}
} /* fdc_specify */
@@ -1346,52 +1365,55 @@ static void fdc_specify(void)
static int fdc_dtr(void)
{
/* If data rate not already set to desired value, set it. */
- if ((raw_cmd->rate & 3) == FDCS->dtr)
+ if ((raw_cmd->rate & 3) == fdc_state[current_fdc].dtr)
return 0;
/* Set dtr */
- fd_outb(raw_cmd->rate & 3, FD_DCR);
+ fdc_outb(raw_cmd->rate & 3, current_fdc, FD_DCR);
/* TODO: some FDC/drive combinations (C&T 82C711 with TEAC 1.2MB)
* need a stabilization period of several milliseconds to be
* enforced after data rate changes before R/W operations.
* Pause 5 msec to avoid trouble. (Needs to be 2 jiffies)
*/
- FDCS->dtr = raw_cmd->rate & 3;
+ fdc_state[current_fdc].dtr = raw_cmd->rate & 3;
return fd_wait_for_completion(jiffies + 2UL * HZ / 100, floppy_ready);
} /* fdc_dtr */
static void tell_sector(void)
{
pr_cont(": track %d, head %d, sector %d, size %d",
- R_TRACK, R_HEAD, R_SECTOR, R_SIZECODE);
+ reply_buffer[R_TRACK], reply_buffer[R_HEAD],
+ reply_buffer[R_SECTOR],
+ reply_buffer[R_SIZECODE]);
} /* tell_sector */
static void print_errors(void)
{
DPRINT("");
- if (ST0 & ST0_ECE) {
+ if (reply_buffer[ST0] & ST0_ECE) {
pr_cont("Recalibrate failed!");
- } else if (ST2 & ST2_CRC) {
+ } else if (reply_buffer[ST2] & ST2_CRC) {
pr_cont("data CRC error");
tell_sector();
- } else if (ST1 & ST1_CRC) {
+ } else if (reply_buffer[ST1] & ST1_CRC) {
pr_cont("CRC error");
tell_sector();
- } else if ((ST1 & (ST1_MAM | ST1_ND)) ||
- (ST2 & ST2_MAM)) {
+ } else if ((reply_buffer[ST1] & (ST1_MAM | ST1_ND)) ||
+ (reply_buffer[ST2] & ST2_MAM)) {
if (!probing) {
pr_cont("sector not found");
tell_sector();
} else
pr_cont("probe failed...");
- } else if (ST2 & ST2_WC) { /* seek error */
+ } else if (reply_buffer[ST2] & ST2_WC) { /* seek error */
pr_cont("wrong cylinder");
- } else if (ST2 & ST2_BC) { /* cylinder marked as bad */
+ } else if (reply_buffer[ST2] & ST2_BC) { /* cylinder marked as bad */
pr_cont("bad cylinder");
} else {
pr_cont("unknown error. ST[0..2] are: 0x%x 0x%x 0x%x",
- ST0, ST1, ST2);
+ reply_buffer[ST0], reply_buffer[ST1],
+ reply_buffer[ST2]);
tell_sector();
}
pr_cont("\n");
@@ -1410,33 +1432,35 @@ static int interpret_errors(void)
if (inr != 7) {
DPRINT("-- FDC reply error\n");
- FDCS->reset = 1;
+ fdc_state[current_fdc].reset = 1;
return 1;
}
/* check IC to find cause of interrupt */
- switch (ST0 & ST0_INTR) {
+ switch (reply_buffer[ST0] & ST0_INTR) {
case 0x40: /* error occurred during command execution */
- if (ST1 & ST1_EOC)
+ if (reply_buffer[ST1] & ST1_EOC)
return 0; /* occurs with pseudo-DMA */
bad = 1;
- if (ST1 & ST1_WP) {
+ if (reply_buffer[ST1] & ST1_WP) {
DPRINT("Drive is write protected\n");
- clear_bit(FD_DISK_WRITABLE_BIT, &DRS->flags);
+ clear_bit(FD_DISK_WRITABLE_BIT,
+ &drive_state[current_drive].flags);
cont->done(0);
bad = 2;
- } else if (ST1 & ST1_ND) {
- set_bit(FD_NEED_TWADDLE_BIT, &DRS->flags);
- } else if (ST1 & ST1_OR) {
- if (DP->flags & FTD_MSG)
+ } else if (reply_buffer[ST1] & ST1_ND) {
+ set_bit(FD_NEED_TWADDLE_BIT,
+ &drive_state[current_drive].flags);
+ } else if (reply_buffer[ST1] & ST1_OR) {
+ if (drive_params[current_drive].flags & FTD_MSG)
DPRINT("Over/Underrun - retrying\n");
bad = 0;
- } else if (*errors >= DP->max_errors.reporting) {
+ } else if (floppy_errors >= drive_params[current_drive].max_errors.reporting) {
print_errors();
}
- if (ST2 & ST2_WC || ST2 & ST2_BC)
+ if (reply_buffer[ST2] & ST2_WC || reply_buffer[ST2] & ST2_BC)
/* wrong cylinder => recal */
- DRS->track = NEED_2_RECAL;
+ drive_state[current_drive].track = NEED_2_RECAL;
return bad;
case 0x80: /* invalid command given */
DPRINT("Invalid FDC command given!\n");
@@ -1469,13 +1493,13 @@ static void setup_rw_floppy(void)
flags |= FD_RAW_INTR;
if ((flags & FD_RAW_SPIN) && !(flags & FD_RAW_NO_MOTOR)) {
- ready_date = DRS->spinup_date + DP->spinup;
+ ready_date = drive_state[current_drive].spinup_date + drive_params[current_drive].spinup;
/* If spinup will take a long time, rerun scandrives
* again just before spinup completion. Beware that
* after scandrives, we must again wait for selection.
*/
- if (time_after(ready_date, jiffies + DP->select_delay)) {
- ready_date -= DP->select_delay;
+ if (time_after(ready_date, jiffies + drive_params[current_drive].select_delay)) {
+ ready_date -= drive_params[current_drive].select_delay;
function = floppy_start;
} else
function = setup_rw_floppy;
@@ -1492,7 +1516,7 @@ static void setup_rw_floppy(void)
r = 0;
for (i = 0; i < raw_cmd->cmd_count; i++)
- r |= output_byte(raw_cmd->cmd[i]);
+ r |= output_byte(current_fdc, raw_cmd->fullcmd[i]);
debugt(__func__, "rw_command");
@@ -1503,7 +1527,7 @@ static void setup_rw_floppy(void)
}
if (!(flags & FD_RAW_INTR)) {
- inr = result();
+ inr = result(current_fdc);
cont->interrupt();
} else if (flags & FD_RAW_NEED_DISK)
fd_watchdog();
@@ -1518,44 +1542,52 @@ static int blind_seek;
static void seek_interrupt(void)
{
debugt(__func__, "");
- if (inr != 2 || (ST0 & 0xF8) != 0x20) {
+ if (inr != 2 || (reply_buffer[ST0] & 0xF8) != 0x20) {
DPRINT("seek failed\n");
- DRS->track = NEED_2_RECAL;
+ drive_state[current_drive].track = NEED_2_RECAL;
cont->error();
cont->redo();
return;
}
- if (DRS->track >= 0 && DRS->track != ST1 && !blind_seek) {
- debug_dcl(DP->flags,
+ if (drive_state[current_drive].track >= 0 &&
+ drive_state[current_drive].track != reply_buffer[ST1] &&
+ !blind_seek) {
+ debug_dcl(drive_params[current_drive].flags,
"clearing NEWCHANGE flag because of effective seek\n");
- debug_dcl(DP->flags, "jiffies=%lu\n", jiffies);
- clear_bit(FD_DISK_NEWCHANGE_BIT, &DRS->flags);
+ debug_dcl(drive_params[current_drive].flags, "jiffies=%lu\n",
+ jiffies);
+ clear_bit(FD_DISK_NEWCHANGE_BIT,
+ &drive_state[current_drive].flags);
/* effective seek */
- DRS->select_date = jiffies;
+ drive_state[current_drive].select_date = jiffies;
}
- DRS->track = ST1;
+ drive_state[current_drive].track = reply_buffer[ST1];
floppy_ready();
}
-static void check_wp(void)
+static void check_wp(int fdc, int drive)
{
- if (test_bit(FD_VERIFY_BIT, &DRS->flags)) {
+ if (test_bit(FD_VERIFY_BIT, &drive_state[drive].flags)) {
/* check write protection */
- output_byte(FD_GETSTATUS);
- output_byte(UNIT(current_drive));
- if (result() != 1) {
- FDCS->reset = 1;
+ output_byte(fdc, FD_GETSTATUS);
+ output_byte(fdc, UNIT(drive));
+ if (result(fdc) != 1) {
+ fdc_state[fdc].reset = 1;
return;
}
- clear_bit(FD_VERIFY_BIT, &DRS->flags);
- clear_bit(FD_NEED_TWADDLE_BIT, &DRS->flags);
- debug_dcl(DP->flags,
+ clear_bit(FD_VERIFY_BIT, &drive_state[drive].flags);
+ clear_bit(FD_NEED_TWADDLE_BIT,
+ &drive_state[drive].flags);
+ debug_dcl(drive_params[drive].flags,
"checking whether disk is write protected\n");
- debug_dcl(DP->flags, "wp=%x\n", ST3 & 0x40);
- if (!(ST3 & 0x40))
- set_bit(FD_DISK_WRITABLE_BIT, &DRS->flags);
+ debug_dcl(drive_params[drive].flags, "wp=%x\n",
+ reply_buffer[ST3] & 0x40);
+ if (!(reply_buffer[ST3] & 0x40))
+ set_bit(FD_DISK_WRITABLE_BIT,
+ &drive_state[drive].flags);
else
- clear_bit(FD_DISK_WRITABLE_BIT, &DRS->flags);
+ clear_bit(FD_DISK_WRITABLE_BIT,
+ &drive_state[drive].flags);
}
}
@@ -1565,40 +1597,42 @@ static void seek_floppy(void)
blind_seek = 0;
- debug_dcl(DP->flags, "calling disk change from %s\n", __func__);
+ debug_dcl(drive_params[current_drive].flags,
+ "calling disk change from %s\n", __func__);
- if (!test_bit(FD_DISK_NEWCHANGE_BIT, &DRS->flags) &&
+ if (!test_bit(FD_DISK_NEWCHANGE_BIT, &drive_state[current_drive].flags) &&
disk_change(current_drive) && (raw_cmd->flags & FD_RAW_NEED_DISK)) {
/* the media changed flag should be cleared after the seek.
* If it isn't, this means that there is really no disk in
* the drive.
*/
- set_bit(FD_DISK_CHANGED_BIT, &DRS->flags);
+ set_bit(FD_DISK_CHANGED_BIT,
+ &drive_state[current_drive].flags);
cont->done(0);
cont->redo();
return;
}
- if (DRS->track <= NEED_1_RECAL) {
+ if (drive_state[current_drive].track <= NEED_1_RECAL) {
recalibrate_floppy();
return;
- } else if (test_bit(FD_DISK_NEWCHANGE_BIT, &DRS->flags) &&
+ } else if (test_bit(FD_DISK_NEWCHANGE_BIT, &drive_state[current_drive].flags) &&
(raw_cmd->flags & FD_RAW_NEED_DISK) &&
- (DRS->track <= NO_TRACK || DRS->track == raw_cmd->track)) {
+ (drive_state[current_drive].track <= NO_TRACK || drive_state[current_drive].track == raw_cmd->track)) {
/* we seek to clear the media-changed condition. Does anybody
* know a more elegant way, which works on all drives? */
if (raw_cmd->track)
track = raw_cmd->track - 1;
else {
- if (DP->flags & FD_SILENT_DCL_CLEAR) {
- set_dor(fdc, ~(0x10 << UNIT(current_drive)), 0);
+ if (drive_params[current_drive].flags & FD_SILENT_DCL_CLEAR) {
+ set_dor(current_fdc, ~(0x10 << UNIT(current_drive)), 0);
blind_seek = 1;
raw_cmd->flags |= FD_RAW_NEED_SEEK;
}
track = 1;
}
} else {
- check_wp();
- if (raw_cmd->track != DRS->track &&
+ check_wp(current_fdc, current_drive);
+ if (raw_cmd->track != drive_state[current_drive].track &&
(raw_cmd->flags & FD_RAW_NEED_SEEK))
track = raw_cmd->track;
else {
@@ -1608,9 +1642,9 @@ static void seek_floppy(void)
}
do_floppy = seek_interrupt;
- output_byte(FD_SEEK);
- output_byte(UNIT(current_drive));
- if (output_byte(track) < 0) {
+ output_byte(current_fdc, FD_SEEK);
+ output_byte(current_fdc, UNIT(current_drive));
+ if (output_byte(current_fdc, track) < 0) {
reset_fdc();
return;
}
@@ -1621,9 +1655,9 @@ static void recal_interrupt(void)
{
debugt(__func__, "");
if (inr != 2)
- FDCS->reset = 1;
- else if (ST0 & ST0_ECE) {
- switch (DRS->track) {
+ fdc_state[current_fdc].reset = 1;
+ else if (reply_buffer[ST0] & ST0_ECE) {
+ switch (drive_state[current_drive].track) {
case NEED_1_RECAL:
debugt(__func__, "need 1 recal");
/* after a second recalibrate, we still haven't
@@ -1641,12 +1675,13 @@ static void recal_interrupt(void)
* not to move at recalibration is to
* be already at track 0.) Clear the
* new change flag */
- debug_dcl(DP->flags,
+ debug_dcl(drive_params[current_drive].flags,
"clearing NEWCHANGE flag because of second recalibrate\n");
- clear_bit(FD_DISK_NEWCHANGE_BIT, &DRS->flags);
- DRS->select_date = jiffies;
- /* fall through */
+ clear_bit(FD_DISK_NEWCHANGE_BIT,
+ &drive_state[current_drive].flags);
+ drive_state[current_drive].select_date = jiffies;
+ fallthrough;
default:
debugt(__func__, "default");
/* Recalibrate moves the head by at
@@ -1655,11 +1690,11 @@ static void recal_interrupt(void)
* track 0, this might mean that we
* started beyond track 80. Try
* again. */
- DRS->track = NEED_1_RECAL;
+ drive_state[current_drive].track = NEED_1_RECAL;
break;
}
} else
- DRS->track = ST1;
+ drive_state[current_drive].track = reply_buffer[ST1];
floppy_ready();
}
@@ -1689,20 +1724,20 @@ irqreturn_t floppy_interrupt(int irq, void *dev_id)
release_dma_lock(f);
do_floppy = NULL;
- if (fdc >= N_FDC || FDCS->address == -1) {
+ if (current_fdc >= N_FDC || fdc_state[current_fdc].address == -1) {
/* we don't even know which FDC is the culprit */
pr_info("DOR0=%x\n", fdc_state[0].dor);
- pr_info("floppy interrupt on bizarre fdc %d\n", fdc);
- pr_info("handler=%pf\n", handler);
+ pr_info("floppy interrupt on bizarre fdc %d\n", current_fdc);
+ pr_info("handler=%ps\n", handler);
is_alive(__func__, "bizarre fdc");
return IRQ_NONE;
}
- FDCS->reset = 0;
+ fdc_state[current_fdc].reset = 0;
/* We have to clear the reset flag here, because apparently on boxes
* with level triggered interrupts (PS/2, Sparc, ...), it is needed to
- * emit SENSEI's to clear the interrupt line. And FDCS->reset blocks the
- * emission of the SENSEI's.
+ * emit SENSEI's to clear the interrupt line. And fdc_state[fdc].reset
+ * blocks the emission of the SENSEI's.
* It is OK to emit floppy commands because we are in an interrupt
* handler here, and thus we have to fear no interference of other
* activity.
@@ -1710,22 +1745,22 @@ irqreturn_t floppy_interrupt(int irq, void *dev_id)
do_print = !handler && print_unex && initialized;
- inr = result();
+ inr = result(current_fdc);
if (do_print)
print_result("unexpected interrupt", inr);
if (inr == 0) {
int max_sensei = 4;
do {
- output_byte(FD_SENSEI);
- inr = result();
+ output_byte(current_fdc, FD_SENSEI);
+ inr = result(current_fdc);
if (do_print)
print_result("sensei", inr);
max_sensei--;
- } while ((ST0 & 0x83) != UNIT(current_drive) &&
+ } while ((reply_buffer[ST0] & 0x83) != UNIT(current_drive) &&
inr == 2 && max_sensei);
}
if (!handler) {
- FDCS->reset = 1;
+ fdc_state[current_fdc].reset = 1;
return IRQ_NONE;
}
schedule_bh(handler);
@@ -1739,8 +1774,8 @@ static void recalibrate_floppy(void)
{
debugt(__func__, "");
do_floppy = recal_interrupt;
- output_byte(FD_RECALIBRATE);
- if (output_byte(UNIT(current_drive)) < 0)
+ output_byte(current_fdc, FD_RECALIBRATE);
+ if (output_byte(current_fdc, UNIT(current_drive)) < 0)
reset_fdc();
}
@@ -1750,9 +1785,9 @@ static void recalibrate_floppy(void)
static void reset_interrupt(void)
{
debugt(__func__, "");
- result(); /* get the status ready for set_fdc */
- if (FDCS->reset) {
- pr_info("reset set in interrupt, calling %pf\n", cont->error);
+ result(current_fdc); /* get the status ready for set_fdc */
+ if (fdc_state[current_fdc].reset) {
+ pr_info("reset set in interrupt, calling %ps\n", cont->error);
cont->error(); /* a reset just after a reset. BAD! */
}
cont->redo();
@@ -1760,15 +1795,17 @@ static void reset_interrupt(void)
/*
* 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).
+ * This WILL trigger an interrupt, causing the handlers in the current
+ * cont's ->redo() to be called via reset_interrupt().
*/
static void reset_fdc(void)
{
unsigned long flags;
do_floppy = reset_interrupt;
- FDCS->reset = 0;
- reset_fdc_info(0);
+ fdc_state[current_fdc].reset = 0;
+ reset_fdc_info(current_fdc, 0);
/* Pseudo-DMA may intercept 'reset finished' interrupt. */
/* Irrelevant for systems with true DMA (i386). */
@@ -1777,23 +1814,24 @@ static void reset_fdc(void)
fd_disable_dma();
release_dma_lock(flags);
- if (FDCS->version >= FDC_82072A)
- fd_outb(0x80 | (FDCS->dtr & 3), FD_STATUS);
+ if (fdc_state[current_fdc].version >= FDC_82072A)
+ fdc_outb(0x80 | (fdc_state[current_fdc].dtr & 3),
+ current_fdc, FD_STATUS);
else {
- fd_outb(FDCS->dor & ~0x04, FD_DOR);
+ fdc_outb(fdc_state[current_fdc].dor & ~0x04, current_fdc, FD_DOR);
udelay(FD_RESET_DELAY);
- fd_outb(FDCS->dor, FD_DOR);
+ fdc_outb(fdc_state[current_fdc].dor, current_fdc, FD_DOR);
}
}
-static void show_floppy(void)
+static void show_floppy(int fdc)
{
int i;
pr_info("\n");
pr_info("floppy driver state\n");
pr_info("-------------------\n");
- pr_info("now=%lu last interrupt=%lu diff=%lu last called handler=%pf\n",
+ pr_info("now=%lu last interrupt=%lu diff=%lu last called handler=%ps\n",
jiffies, interruptjiffies, jiffies - interruptjiffies,
lasthandler);
@@ -1809,12 +1847,12 @@ static void show_floppy(void)
print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 1,
reply_buffer, resultsize, true);
- pr_info("status=%x\n", fd_inb(FD_STATUS));
+ pr_info("status=%x\n", fdc_inb(fdc, FD_STATUS));
pr_info("fdc_busy=%lu\n", fdc_busy);
if (do_floppy)
- pr_info("do_floppy=%pf\n", do_floppy);
+ pr_info("do_floppy=%ps\n", do_floppy);
if (work_pending(&floppy_work))
- pr_info("floppy_work.func=%pf\n", floppy_work.func);
+ pr_info("floppy_work.func=%ps\n", floppy_work.func);
if (delayed_work_pending(&fd_timer))
pr_info("delayed work.function=%p expires=%ld\n",
fd_timer.work.func,
@@ -1835,7 +1873,7 @@ static void floppy_shutdown(struct work_struct *arg)
unsigned long flags;
if (initialized)
- show_floppy();
+ show_floppy(current_fdc);
cancel_activity();
flags = claim_dma_lock();
@@ -1846,7 +1884,7 @@ static void floppy_shutdown(struct work_struct *arg)
if (initialized)
DPRINT("floppy timeout called\n");
- FDCS->reset = 1;
+ fdc_state[current_fdc].reset = 1;
if (cont) {
cont->done(0);
cont->redo(); /* this will recall reset when needed */
@@ -1866,29 +1904,29 @@ static int start_motor(void (*function)(void))
mask = 0xfc;
data = UNIT(current_drive);
if (!(raw_cmd->flags & FD_RAW_NO_MOTOR)) {
- if (!(FDCS->dor & (0x10 << UNIT(current_drive)))) {
+ if (!(fdc_state[current_fdc].dor & (0x10 << UNIT(current_drive)))) {
set_debugt();
/* no read since this drive is running */
- DRS->first_read_date = 0;
+ drive_state[current_drive].first_read_date = 0;
/* note motor start time if motor is not yet running */
- DRS->spinup_date = jiffies;
+ drive_state[current_drive].spinup_date = jiffies;
data |= (0x10 << UNIT(current_drive));
}
- } else if (FDCS->dor & (0x10 << UNIT(current_drive)))
+ } else if (fdc_state[current_fdc].dor & (0x10 << UNIT(current_drive)))
mask &= ~(0x10 << UNIT(current_drive));
/* starts motor and selects floppy */
- del_timer(motor_off_timer + current_drive);
- set_dor(fdc, mask, data);
+ timer_delete(motor_off_timer + current_drive);
+ set_dor(current_fdc, mask, data);
/* wait_for_completion also schedules reset if needed. */
- return fd_wait_for_completion(DRS->select_date + DP->select_delay,
+ return fd_wait_for_completion(drive_state[current_drive].select_date + drive_params[current_drive].select_delay,
function);
}
static void floppy_ready(void)
{
- if (FDCS->reset) {
+ if (fdc_state[current_fdc].reset) {
reset_fdc();
return;
}
@@ -1897,10 +1935,11 @@ static void floppy_ready(void)
if (fdc_dtr())
return;
- debug_dcl(DP->flags, "calling disk change from floppy_ready\n");
+ debug_dcl(drive_params[current_drive].flags,
+ "calling disk change from floppy_ready\n");
if (!(raw_cmd->flags & FD_RAW_NO_MOTOR) &&
- disk_change(current_drive) && !DP->select_delay)
- twaddle(); /* this clears the dcl on certain
+ disk_change(current_drive) && !drive_params[current_drive].select_delay)
+ twaddle(current_fdc, current_drive); /* this clears the dcl on certain
* drive/controller combinations */
#ifdef fd_chose_dma_mode
@@ -1912,24 +1951,25 @@ static void floppy_ready(void)
#endif
if (raw_cmd->flags & (FD_RAW_NEED_SEEK | FD_RAW_NEED_DISK)) {
- perpendicular_mode();
- fdc_specify(); /* must be done here because of hut, hlt ... */
+ perpendicular_mode(current_fdc);
+ fdc_specify(current_fdc, current_drive); /* must be done here because of hut, hlt ... */
seek_floppy();
} else {
if ((raw_cmd->flags & FD_RAW_READ) ||
(raw_cmd->flags & FD_RAW_WRITE))
- fdc_specify();
+ fdc_specify(current_fdc, current_drive);
setup_rw_floppy();
}
}
static void floppy_start(void)
{
- reschedule_timeout(current_reqD, "floppy start");
+ reschedule_timeout(current_drive, "floppy start");
scandrives();
- debug_dcl(DP->flags, "setting NEWCHANGE in floppy_start\n");
- set_bit(FD_DISK_NEWCHANGE_BIT, &DRS->flags);
+ debug_dcl(drive_params[current_drive].flags,
+ "setting NEWCHANGE in floppy_start\n");
+ set_bit(FD_DISK_NEWCHANGE_BIT, &drive_state[current_drive].flags);
floppy_ready();
}
@@ -1959,16 +1999,19 @@ static const struct cont_t wakeup_cont = {
.interrupt = empty,
.redo = do_wakeup,
.error = empty,
- .done = (done_f)empty
+ .done = empty_done,
};
static const struct cont_t intr_cont = {
.interrupt = empty,
.redo = process_fd_request,
.error = empty,
- .done = (done_f)empty
+ .done = empty_done,
};
+/* schedules handler, waiting for completion. May be interrupted, will then
+ * return -EINTR, in which case the driver will automatically be unlocked.
+ */
static int wait_til_done(void (*handler)(void), bool interruptible)
{
int ret;
@@ -1987,7 +2030,7 @@ static int wait_til_done(void (*handler)(void), bool interruptible)
return -EINTR;
}
- if (FDCS->reset)
+ if (fdc_state[current_fdc].reset)
command_status = FD_COMMAND_ERROR;
if (command_status == FD_COMMAND_OKAY)
ret = 0;
@@ -2024,18 +2067,19 @@ static void success_and_wakeup(void)
* ==========================
*/
-static int next_valid_format(void)
+static int next_valid_format(int drive)
{
int probed_format;
- probed_format = DRS->probed_format;
+ probed_format = drive_state[drive].probed_format;
while (1) {
- if (probed_format >= 8 || !DP->autodetect[probed_format]) {
- DRS->probed_format = 0;
+ if (probed_format >= FD_AUTODETECT_SIZE ||
+ !drive_params[drive].autodetect[probed_format]) {
+ drive_state[drive].probed_format = 0;
return 1;
}
- if (floppy_type[DP->autodetect[probed_format]].sect) {
- DRS->probed_format = probed_format;
+ if (floppy_type[drive_params[drive].autodetect[probed_format]].sect) {
+ drive_state[drive].probed_format = probed_format;
return 0;
}
probed_format++;
@@ -2047,23 +2091,23 @@ static void bad_flp_intr(void)
int err_count;
if (probing) {
- DRS->probed_format++;
- if (!next_valid_format())
+ drive_state[current_drive].probed_format++;
+ if (!next_valid_format(current_drive))
return;
}
- err_count = ++(*errors);
- INFBOUND(DRWE->badness, err_count);
- if (err_count > DP->max_errors.abort)
+ err_count = ++floppy_errors;
+ INFBOUND(write_errors[current_drive].badness, err_count);
+ if (err_count > drive_params[current_drive].max_errors.abort)
cont->done(0);
- if (err_count > DP->max_errors.reset)
- FDCS->reset = 1;
- else if (err_count > DP->max_errors.recal)
- DRS->track = NEED_2_RECAL;
+ if (err_count > drive_params[current_drive].max_errors.reset)
+ fdc_state[current_fdc].reset = 1;
+ else if (err_count > drive_params[current_drive].max_errors.recal)
+ drive_state[current_drive].track = NEED_2_RECAL;
}
static void set_floppy(int drive)
{
- int type = ITYPE(UDRS->fd_device);
+ int type = ITYPE(drive_state[drive].fd_device);
if (type)
_floppy = floppy_type + type;
@@ -2080,6 +2124,7 @@ static void format_interrupt(void)
switch (interpret_errors()) {
case 1:
cont->error();
+ break;
case 2:
break;
case 0:
@@ -2109,25 +2154,28 @@ static void setup_format_params(int track)
FD_RAW_NEED_DISK | FD_RAW_NEED_SEEK);
raw_cmd->rate = _floppy->rate & 0x43;
raw_cmd->cmd_count = NR_F;
- COMMAND = FM_MODE(_floppy, FD_FORMAT);
- DR_SELECT = UNIT(current_drive) + PH_HEAD(_floppy, format_req.head);
- F_SIZECODE = FD_SIZECODE(_floppy);
- F_SECT_PER_TRACK = _floppy->sect << 2 >> F_SIZECODE;
- F_GAP = _floppy->fmt_gap;
- F_FILL = FD_FILL_BYTE;
+ raw_cmd->cmd[COMMAND] = FM_MODE(_floppy, FD_FORMAT);
+ raw_cmd->cmd[DR_SELECT] = UNIT(current_drive) + PH_HEAD(_floppy, format_req.head);
+ raw_cmd->cmd[F_SIZECODE] = FD_SIZECODE(_floppy);
+ raw_cmd->cmd[F_SECT_PER_TRACK] = _floppy->sect << 2 >> raw_cmd->cmd[F_SIZECODE];
+ raw_cmd->cmd[F_GAP] = _floppy->fmt_gap;
+ raw_cmd->cmd[F_FILL] = FD_FILL_BYTE;
raw_cmd->kernel_data = floppy_track_buffer;
- raw_cmd->length = 4 * F_SECT_PER_TRACK;
+ raw_cmd->length = 4 * raw_cmd->cmd[F_SECT_PER_TRACK];
+
+ if (!raw_cmd->cmd[F_SECT_PER_TRACK])
+ return;
/* allow for about 30ms for data transport per track */
- head_shift = (F_SECT_PER_TRACK + 5) / 6;
+ head_shift = (raw_cmd->cmd[F_SECT_PER_TRACK] + 5) / 6;
/* a ``cylinder'' is two tracks plus a little stepping time */
track_shift = 2 * head_shift + 3;
/* position of logical sector 1 on this track */
n = (track_shift * format_req.track + head_shift * format_req.head)
- % F_SECT_PER_TRACK;
+ % raw_cmd->cmd[F_SECT_PER_TRACK];
/* determine interleave */
il = 1;
@@ -2135,27 +2183,27 @@ static void setup_format_params(int track)
il++;
/* initialize field */
- for (count = 0; count < F_SECT_PER_TRACK; ++count) {
+ for (count = 0; count < raw_cmd->cmd[F_SECT_PER_TRACK]; ++count) {
here[count].track = format_req.track;
here[count].head = format_req.head;
here[count].sect = 0;
- here[count].size = F_SIZECODE;
+ here[count].size = raw_cmd->cmd[F_SIZECODE];
}
/* place logical sectors */
- for (count = 1; count <= F_SECT_PER_TRACK; ++count) {
+ for (count = 1; count <= raw_cmd->cmd[F_SECT_PER_TRACK]; ++count) {
here[n].sect = count;
- n = (n + il) % F_SECT_PER_TRACK;
+ n = (n + il) % raw_cmd->cmd[F_SECT_PER_TRACK];
if (here[n].sect) { /* sector busy, find next free sector */
++n;
- if (n >= F_SECT_PER_TRACK) {
- n -= F_SECT_PER_TRACK;
+ if (n >= raw_cmd->cmd[F_SECT_PER_TRACK]) {
+ n -= raw_cmd->cmd[F_SECT_PER_TRACK];
while (here[n].sect)
++n;
}
}
}
if (_floppy->stretch & FD_SECTBASEMASK) {
- for (count = 0; count < F_SECT_PER_TRACK; count++)
+ for (count = 0; count < raw_cmd->cmd[F_SECT_PER_TRACK]; count++)
here[count].sect += FD_SECTBASE(_floppy) - 1;
}
}
@@ -2184,7 +2232,7 @@ static int do_format(int drive, struct format_descr *tmp_format_req)
set_floppy(drive);
if (!_floppy ||
- _floppy->track > DP->tracks ||
+ _floppy->track > drive_params[current_drive].tracks ||
tmp_format_req->track >= _floppy->track ||
tmp_format_req->head >= _floppy->head ||
(_floppy->sect << 2) % (1 << FD_SIZECODE(_floppy)) ||
@@ -2193,9 +2241,8 @@ static int do_format(int drive, struct format_descr *tmp_format_req)
return -EINVAL;
}
format_req = *tmp_format_req;
- format_errors = 0;
cont = &format_cont;
- errors = &format_errors;
+ floppy_errors = 0;
ret = wait_til_done(redo_format, true);
if (ret == -EINTR)
return -EINTR;
@@ -2211,7 +2258,7 @@ static int do_format(int drive, struct format_descr *tmp_format_req)
static void floppy_end_request(struct request *req, blk_status_t error)
{
unsigned int nr_sectors = current_count_sectors;
- unsigned int drive = (unsigned long)req->rq_disk->private_data;
+ unsigned int drive = (unsigned long)req->q->disk->private_data;
/* current_count_sectors can be zero if transfer failed */
if (error)
@@ -2230,7 +2277,6 @@ static void floppy_end_request(struct request *req, blk_status_t error)
static void request_done(int uptodate)
{
struct request *req = current_req;
- struct request_queue *q;
int block;
char msg[sizeof("request done ") + sizeof(int) * 3];
@@ -2243,27 +2289,25 @@ static void request_done(int uptodate)
return;
}
- q = req->q;
-
if (uptodate) {
/* maintain values for invalidation on geometry
* change */
block = current_count_sectors + blk_rq_pos(req);
- INFBOUND(DRS->maxblock, block);
+ INFBOUND(drive_state[current_drive].maxblock, block);
if (block > _floppy->sect)
- DRS->maxtrack = 1;
+ drive_state[current_drive].maxtrack = 1;
floppy_end_request(req, 0);
} else {
if (rq_data_dir(req) == WRITE) {
/* record write error information */
- DRWE->write_errors++;
- if (DRWE->write_errors == 1) {
- DRWE->first_error_sector = blk_rq_pos(req);
- DRWE->first_error_generation = DRS->generation;
+ write_errors[current_drive].write_errors++;
+ if (write_errors[current_drive].write_errors == 1) {
+ write_errors[current_drive].first_error_sector = blk_rq_pos(req);
+ write_errors[current_drive].first_error_generation = drive_state[current_drive].generation;
}
- DRWE->last_error_sector = blk_rq_pos(req);
- DRWE->last_error_generation = DRS->generation;
+ write_errors[current_drive].last_error_sector = blk_rq_pos(req);
+ write_errors[current_drive].last_error_generation = drive_state[current_drive].generation;
}
floppy_end_request(req, BLK_STS_IOERR);
}
@@ -2277,43 +2321,45 @@ static void rw_interrupt(void)
int heads;
int nr_sectors;
- if (R_HEAD >= 2) {
+ if (reply_buffer[R_HEAD] >= 2) {
/* some Toshiba floppy controllers occasionnally seem to
* return bogus interrupts after read/write operations, which
* can be recognized by a bad head number (>= 2) */
return;
}
- if (!DRS->first_read_date)
- DRS->first_read_date = jiffies;
+ if (!drive_state[current_drive].first_read_date)
+ drive_state[current_drive].first_read_date = jiffies;
- nr_sectors = 0;
- ssize = DIV_ROUND_UP(1 << SIZECODE, 4);
+ ssize = DIV_ROUND_UP(1 << raw_cmd->cmd[SIZECODE], 4);
- if (ST1 & ST1_EOC)
+ if (reply_buffer[ST1] & ST1_EOC)
eoc = 1;
else
eoc = 0;
- if (COMMAND & 0x80)
+ if (raw_cmd->cmd[COMMAND] & 0x80)
heads = 2;
else
heads = 1;
- nr_sectors = (((R_TRACK - TRACK) * heads +
- R_HEAD - HEAD) * SECT_PER_TRACK +
- R_SECTOR - SECTOR + eoc) << SIZECODE >> 2;
+ nr_sectors = (((reply_buffer[R_TRACK] - raw_cmd->cmd[TRACK]) * heads +
+ reply_buffer[R_HEAD] - raw_cmd->cmd[HEAD]) * raw_cmd->cmd[SECT_PER_TRACK] +
+ reply_buffer[R_SECTOR] - raw_cmd->cmd[SECTOR] + eoc) << raw_cmd->cmd[SIZECODE] >> 2;
if (nr_sectors / ssize >
DIV_ROUND_UP(in_sector_offset + current_count_sectors, ssize)) {
DPRINT("long rw: %x instead of %lx\n",
nr_sectors, current_count_sectors);
- pr_info("rs=%d s=%d\n", R_SECTOR, SECTOR);
- pr_info("rh=%d h=%d\n", R_HEAD, HEAD);
- pr_info("rt=%d t=%d\n", R_TRACK, TRACK);
+ pr_info("rs=%d s=%d\n", reply_buffer[R_SECTOR],
+ raw_cmd->cmd[SECTOR]);
+ pr_info("rh=%d h=%d\n", reply_buffer[R_HEAD],
+ raw_cmd->cmd[HEAD]);
+ pr_info("rt=%d t=%d\n", reply_buffer[R_TRACK],
+ raw_cmd->cmd[TRACK]);
pr_info("heads=%d eoc=%d\n", heads, eoc);
pr_info("spt=%d st=%d ss=%d\n",
- SECT_PER_TRACK, fsector_t, ssize);
+ raw_cmd->cmd[SECT_PER_TRACK], fsector_t, ssize);
pr_info("in_sector_offset=%d\n", in_sector_offset);
}
@@ -2343,7 +2389,7 @@ static void rw_interrupt(void)
}
if (probing) {
- if (DP->flags & FTD_MSG)
+ if (drive_params[current_drive].flags & FTD_MSG)
DPRINT("Auto-detected floppy type %s in fd%d\n",
_floppy->name, current_drive);
current_type[current_drive] = _floppy;
@@ -2351,11 +2397,10 @@ static void rw_interrupt(void)
probing = 0;
}
- if (CT(COMMAND) != FD_READ ||
- raw_cmd->kernel_data == bio_data(current_req->bio)) {
+ if (CT(raw_cmd->cmd[COMMAND]) != FD_READ) {
/* transfer directly from buffer */
cont->done(1);
- } else if (CT(COMMAND) == FD_READ) {
+ } else {
buffer_track = raw_cmd->track;
buffer_drive = current_drive;
INFBOUND(buffer_max, nr_sectors + fsector_t);
@@ -2363,27 +2408,6 @@ static void rw_interrupt(void)
cont->redo();
}
-/* Compute maximal contiguous buffer size. */
-static int buffer_chain_size(void)
-{
- struct bio_vec bv;
- int size;
- struct req_iterator iter;
- char *base;
-
- base = bio_data(current_req->bio);
- size = 0;
-
- rq_for_each_segment(bv, current_req, iter) {
- if (page_address(bv.bv_page) + bv.bv_offset != base + size)
- break;
-
- size += bv.bv_len;
- }
-
- return size >> 9;
-}
-
/* Compute the maximal transfer size */
static int transfer_size(int ssize, int max_sector, int max_size)
{
@@ -2405,7 +2429,6 @@ static void copy_buffer(int ssize, int max_sector, int max_sector_2)
{
int remaining; /* number of transferred 512-byte sectors */
struct bio_vec bv;
- char *buffer;
char *dma_buffer;
int size;
struct req_iterator iter;
@@ -2414,13 +2437,13 @@ static void copy_buffer(int ssize, int max_sector, int max_sector_2)
min(max_sector, max_sector_2),
blk_rq_sectors(current_req));
- if (current_count_sectors <= 0 && CT(COMMAND) == FD_WRITE &&
+ if (current_count_sectors <= 0 && CT(raw_cmd->cmd[COMMAND]) == FD_WRITE &&
buffer_max > fsector_t + blk_rq_sectors(current_req))
current_count_sectors = min_t(int, buffer_max - fsector_t,
blk_rq_sectors(current_req));
remaining = current_count_sectors << 9;
- if (remaining > blk_rq_bytes(current_req) && CT(COMMAND) == FD_WRITE) {
+ if (remaining > blk_rq_bytes(current_req) && CT(raw_cmd->cmd[COMMAND]) == FD_WRITE) {
DPRINT("in copy buffer\n");
pr_info("current_count_sectors=%ld\n", current_count_sectors);
pr_info("remaining=%d\n", remaining >> 9);
@@ -2444,8 +2467,6 @@ static void copy_buffer(int ssize, int max_sector, int max_sector_2)
size = bv.bv_len;
SUPBOUND(size, remaining);
-
- buffer = page_address(bv.bv_page) + bv.bv_offset;
if (dma_buffer + size >
floppy_track_buffer + (max_buffer_sectors << 10) ||
dma_buffer < floppy_track_buffer) {
@@ -2455,19 +2476,17 @@ static void copy_buffer(int ssize, int max_sector, int max_sector_2)
fsector_t, buffer_min);
pr_info("current_count_sectors=%ld\n",
current_count_sectors);
- if (CT(COMMAND) == FD_READ)
+ if (CT(raw_cmd->cmd[COMMAND]) == FD_READ)
pr_info("read\n");
- if (CT(COMMAND) == FD_WRITE)
+ if (CT(raw_cmd->cmd[COMMAND]) == FD_WRITE)
pr_info("write\n");
break;
}
- if (((unsigned long)buffer) % 512)
- DPRINT("%p buffer not aligned\n", buffer);
- if (CT(COMMAND) == FD_READ)
- memcpy(buffer, dma_buffer, size);
+ if (CT(raw_cmd->cmd[COMMAND]) == FD_READ)
+ memcpy_to_bvec(&bv, dma_buffer);
else
- memcpy(dma_buffer, buffer, size);
+ memcpy_from_bvec(dma_buffer, &bv);
remaining -= size;
dma_buffer += size;
@@ -2482,7 +2501,7 @@ static void copy_buffer(int ssize, int max_sector, int max_sector_2)
/* work around a bug in pseudo DMA
* (on some FDCs) pseudo DMA does not stop when the CPU stops
* sending data. Hence we need a different way to signal the
- * transfer length: We use SECT_PER_TRACK. Unfortunately, this
+ * transfer length: We use raw_cmd->cmd[SECT_PER_TRACK]. Unfortunately, this
* does not work with MT, hence we can only transfer one head at
* a time
*/
@@ -2491,18 +2510,18 @@ static void virtualdmabug_workaround(void)
int hard_sectors;
int end_sector;
- if (CT(COMMAND) == FD_WRITE) {
- COMMAND &= ~0x80; /* switch off multiple track mode */
+ if (CT(raw_cmd->cmd[COMMAND]) == FD_WRITE) {
+ raw_cmd->cmd[COMMAND] &= ~0x80; /* switch off multiple track mode */
- hard_sectors = raw_cmd->length >> (7 + SIZECODE);
- end_sector = SECTOR + hard_sectors - 1;
- if (end_sector > SECT_PER_TRACK) {
+ hard_sectors = raw_cmd->length >> (7 + raw_cmd->cmd[SIZECODE]);
+ end_sector = raw_cmd->cmd[SECTOR] + hard_sectors - 1;
+ if (end_sector > raw_cmd->cmd[SECT_PER_TRACK]) {
pr_info("too many sectors %d > %d\n",
- end_sector, SECT_PER_TRACK);
+ end_sector, raw_cmd->cmd[SECT_PER_TRACK]);
return;
}
- SECT_PER_TRACK = end_sector;
- /* make sure SECT_PER_TRACK
+ raw_cmd->cmd[SECT_PER_TRACK] = end_sector;
+ /* make sure raw_cmd->cmd[SECT_PER_TRACK]
* points to end of transfer */
}
}
@@ -2528,17 +2547,17 @@ static int make_raw_rw_request(void)
if (WARN(max_buffer_sectors == 0, "VFS: Block I/O scheduled on unopened device\n"))
return 0;
- set_fdc((long)current_req->rq_disk->private_data);
+ set_fdc((long)current_req->q->disk->private_data);
raw_cmd = &default_raw_cmd;
raw_cmd->flags = FD_RAW_SPIN | FD_RAW_NEED_DISK | FD_RAW_NEED_SEEK;
raw_cmd->cmd_count = NR_RW;
if (rq_data_dir(current_req) == READ) {
raw_cmd->flags |= FD_RAW_READ;
- COMMAND = FM_MODE(_floppy, FD_READ);
+ raw_cmd->cmd[COMMAND] = FM_MODE(_floppy, FD_READ);
} else if (rq_data_dir(current_req) == WRITE) {
raw_cmd->flags |= FD_RAW_WRITE;
- COMMAND = FM_MODE(_floppy, FD_WRITE);
+ raw_cmd->cmd[COMMAND] = FM_MODE(_floppy, FD_WRITE);
} else {
DPRINT("%s: unknown command\n", __func__);
return 0;
@@ -2546,24 +2565,24 @@ static int make_raw_rw_request(void)
max_sector = _floppy->sect * _floppy->head;
- TRACK = (int)blk_rq_pos(current_req) / max_sector;
+ raw_cmd->cmd[TRACK] = (int)blk_rq_pos(current_req) / max_sector;
fsector_t = (int)blk_rq_pos(current_req) % max_sector;
- if (_floppy->track && TRACK >= _floppy->track) {
+ if (_floppy->track && raw_cmd->cmd[TRACK] >= _floppy->track) {
if (blk_rq_cur_sectors(current_req) & 1) {
current_count_sectors = 1;
return 1;
} else
return 0;
}
- HEAD = fsector_t / _floppy->sect;
+ raw_cmd->cmd[HEAD] = fsector_t / _floppy->sect;
if (((_floppy->stretch & (FD_SWAPSIDES | FD_SECTBASEMASK)) ||
- test_bit(FD_NEED_TWADDLE_BIT, &DRS->flags)) &&
+ test_bit(FD_NEED_TWADDLE_BIT, &drive_state[current_drive].flags)) &&
fsector_t < _floppy->sect)
max_sector = _floppy->sect;
/* 2M disks have phantom sectors on the first track */
- if ((_floppy->rate & FD_2M) && (!TRACK) && (!HEAD)) {
+ if ((_floppy->rate & FD_2M) && (!raw_cmd->cmd[TRACK]) && (!raw_cmd->cmd[HEAD])) {
max_sector = 2 * _floppy->sect / 3;
if (fsector_t >= max_sector) {
current_count_sectors =
@@ -2571,23 +2590,24 @@ static int make_raw_rw_request(void)
blk_rq_sectors(current_req));
return 1;
}
- SIZECODE = 2;
+ raw_cmd->cmd[SIZECODE] = 2;
} else
- SIZECODE = FD_SIZECODE(_floppy);
+ raw_cmd->cmd[SIZECODE] = FD_SIZECODE(_floppy);
raw_cmd->rate = _floppy->rate & 0x43;
- if ((_floppy->rate & FD_2M) && (TRACK || HEAD) && raw_cmd->rate == 2)
+ if ((_floppy->rate & FD_2M) &&
+ (raw_cmd->cmd[TRACK] || raw_cmd->cmd[HEAD]) && raw_cmd->rate == 2)
raw_cmd->rate = 1;
- if (SIZECODE)
- SIZECODE2 = 0xff;
+ if (raw_cmd->cmd[SIZECODE])
+ raw_cmd->cmd[SIZECODE2] = 0xff;
else
- SIZECODE2 = 0x80;
- raw_cmd->track = TRACK << STRETCH(_floppy);
- DR_SELECT = UNIT(current_drive) + PH_HEAD(_floppy, HEAD);
- GAP = _floppy->gap;
- ssize = DIV_ROUND_UP(1 << SIZECODE, 4);
- SECT_PER_TRACK = _floppy->sect << 2 >> SIZECODE;
- SECTOR = ((fsector_t % _floppy->sect) << 2 >> SIZECODE) +
+ raw_cmd->cmd[SIZECODE2] = 0x80;
+ raw_cmd->track = raw_cmd->cmd[TRACK] << STRETCH(_floppy);
+ raw_cmd->cmd[DR_SELECT] = UNIT(current_drive) + PH_HEAD(_floppy, raw_cmd->cmd[HEAD]);
+ raw_cmd->cmd[GAP] = _floppy->gap;
+ ssize = DIV_ROUND_UP(1 << raw_cmd->cmd[SIZECODE], 4);
+ raw_cmd->cmd[SECT_PER_TRACK] = _floppy->sect << 2 >> raw_cmd->cmd[SIZECODE];
+ raw_cmd->cmd[SECTOR] = ((fsector_t % _floppy->sect) << 2 >> raw_cmd->cmd[SIZECODE]) +
FD_SECTBASE(_floppy);
/* tracksize describes the size which can be filled up with sectors
@@ -2595,24 +2615,24 @@ static int make_raw_rw_request(void)
*/
tracksize = _floppy->sect - _floppy->sect % ssize;
if (tracksize < _floppy->sect) {
- SECT_PER_TRACK++;
+ raw_cmd->cmd[SECT_PER_TRACK]++;
if (tracksize <= fsector_t % _floppy->sect)
- SECTOR--;
+ raw_cmd->cmd[SECTOR]--;
/* if we are beyond tracksize, fill up using smaller sectors */
while (tracksize <= fsector_t % _floppy->sect) {
while (tracksize + ssize > _floppy->sect) {
- SIZECODE--;
+ raw_cmd->cmd[SIZECODE]--;
ssize >>= 1;
}
- SECTOR++;
- SECT_PER_TRACK++;
+ raw_cmd->cmd[SECTOR]++;
+ raw_cmd->cmd[SECT_PER_TRACK]++;
tracksize += ssize;
}
- max_sector = HEAD * _floppy->sect + tracksize;
- } else if (!TRACK && !HEAD && !(_floppy->rate & FD_2M) && probing) {
+ max_sector = raw_cmd->cmd[HEAD] * _floppy->sect + tracksize;
+ } else if (!raw_cmd->cmd[TRACK] && !raw_cmd->cmd[HEAD] && !(_floppy->rate & FD_2M) && probing) {
max_sector = _floppy->sect;
- } else if (!HEAD && CT(COMMAND) == FD_WRITE) {
+ } else if (!raw_cmd->cmd[HEAD] && CT(raw_cmd->cmd[COMMAND]) == FD_WRITE) {
/* for virtual DMA bug workaround */
max_sector = _floppy->sect;
}
@@ -2624,12 +2644,12 @@ static int make_raw_rw_request(void)
(current_drive == buffer_drive) &&
(fsector_t >= buffer_min) && (fsector_t < buffer_max)) {
/* data already in track buffer */
- if (CT(COMMAND) == FD_READ) {
+ if (CT(raw_cmd->cmd[COMMAND]) == FD_READ) {
copy_buffer(1, max_sector, buffer_max);
return 1;
}
} else if (in_sector_offset || blk_rq_sectors(current_req) < ssize) {
- if (CT(COMMAND) == FD_WRITE) {
+ if (CT(raw_cmd->cmd[COMMAND]) == FD_WRITE) {
unsigned int sectors;
sectors = fsector_t + blk_rq_sectors(current_req);
@@ -2640,58 +2660,10 @@ static int make_raw_rw_request(void)
}
raw_cmd->flags &= ~FD_RAW_WRITE;
raw_cmd->flags |= FD_RAW_READ;
- COMMAND = FM_MODE(_floppy, FD_READ);
- } else if ((unsigned long)bio_data(current_req->bio) < MAX_DMA_ADDRESS) {
- unsigned long dma_limit;
- int direct, indirect;
-
- indirect =
- transfer_size(ssize, max_sector,
- max_buffer_sectors * 2) - fsector_t;
-
- /*
- * Do NOT use minimum() here---MAX_DMA_ADDRESS is 64 bits wide
- * on a 64 bit machine!
- */
- max_size = buffer_chain_size();
- dma_limit = (MAX_DMA_ADDRESS -
- ((unsigned long)bio_data(current_req->bio))) >> 9;
- if ((unsigned long)max_size > dma_limit)
- max_size = dma_limit;
- /* 64 kb boundaries */
- if (CROSS_64KB(bio_data(current_req->bio), max_size << 9))
- max_size = (K_64 -
- ((unsigned long)bio_data(current_req->bio)) %
- K_64) >> 9;
- direct = transfer_size(ssize, max_sector, max_size) - fsector_t;
- /*
- * We try to read tracks, but if we get too many errors, we
- * go back to reading just one sector at a time.
- *
- * This means we should be able to read a sector even if there
- * are other bad sectors on this track.
- */
- if (!direct ||
- (indirect * 2 > direct * 3 &&
- *errors < DP->max_errors.read_track &&
- ((!probing ||
- (DP->read_track & (1 << DRS->probed_format)))))) {
- max_size = blk_rq_sectors(current_req);
- } else {
- raw_cmd->kernel_data = bio_data(current_req->bio);
- raw_cmd->length = current_count_sectors << 9;
- if (raw_cmd->length == 0) {
- DPRINT("%s: zero dma transfer attempted\n", __func__);
- DPRINT("indirect=%d direct=%d fsector_t=%d\n",
- indirect, direct, fsector_t);
- return 0;
- }
- virtualdmabug_workaround();
- return 2;
- }
+ raw_cmd->cmd[COMMAND] = FM_MODE(_floppy, FD_READ);
}
- if (CT(COMMAND) == FD_READ)
+ if (CT(raw_cmd->cmd[COMMAND]) == FD_READ)
max_size = max_sector; /* unbounded */
/* claim buffer track if needed */
@@ -2699,7 +2671,7 @@ static int make_raw_rw_request(void)
buffer_drive != current_drive || /* bad drive */
fsector_t > buffer_max ||
fsector_t < buffer_min ||
- ((CT(COMMAND) == FD_READ ||
+ ((CT(raw_cmd->cmd[COMMAND]) == FD_READ ||
(!in_sector_offset && blk_rq_sectors(current_req) >= ssize)) &&
max_sector > 2 * max_buffer_sectors + buffer_min &&
max_size + fsector_t > 2 * max_buffer_sectors + buffer_min)) {
@@ -2711,7 +2683,7 @@ static int make_raw_rw_request(void)
raw_cmd->kernel_data = floppy_track_buffer +
((aligned_sector_t - buffer_min) << 9);
- if (CT(COMMAND) == FD_WRITE) {
+ if (CT(raw_cmd->cmd[COMMAND]) == FD_WRITE) {
/* copy write buffer to track buffer.
* if we get here, we know that the write
* is either aligned or the data already in the buffer
@@ -2732,24 +2704,23 @@ static int make_raw_rw_request(void)
raw_cmd->length = ((raw_cmd->length - 1) | (ssize - 1)) + 1;
raw_cmd->length <<= 9;
if ((raw_cmd->length < current_count_sectors << 9) ||
- (raw_cmd->kernel_data != bio_data(current_req->bio) &&
- CT(COMMAND) == FD_WRITE &&
+ (CT(raw_cmd->cmd[COMMAND]) == FD_WRITE &&
(aligned_sector_t + (raw_cmd->length >> 9) > buffer_max ||
aligned_sector_t < buffer_min)) ||
- raw_cmd->length % (128 << SIZECODE) ||
+ raw_cmd->length % (128 << raw_cmd->cmd[SIZECODE]) ||
raw_cmd->length <= 0 || current_count_sectors <= 0) {
DPRINT("fractionary current count b=%lx s=%lx\n",
raw_cmd->length, current_count_sectors);
- if (raw_cmd->kernel_data != bio_data(current_req->bio))
- pr_info("addr=%d, length=%ld\n",
- (int)((raw_cmd->kernel_data -
- floppy_track_buffer) >> 9),
- current_count_sectors);
+ pr_info("addr=%d, length=%ld\n",
+ (int)((raw_cmd->kernel_data -
+ floppy_track_buffer) >> 9),
+ current_count_sectors);
pr_info("st=%d ast=%d mse=%d msi=%d\n",
fsector_t, aligned_sector_t, max_sector, max_size);
- pr_info("ssize=%x SIZECODE=%d\n", ssize, SIZECODE);
+ pr_info("ssize=%x SIZECODE=%d\n", ssize, raw_cmd->cmd[SIZECODE]);
pr_info("command=%x SECTOR=%d HEAD=%d, TRACK=%d\n",
- COMMAND, SECTOR, HEAD, TRACK);
+ raw_cmd->cmd[COMMAND], raw_cmd->cmd[SECTOR],
+ raw_cmd->cmd[HEAD], raw_cmd->cmd[TRACK]);
pr_info("buffer drive=%d\n", buffer_drive);
pr_info("buffer track=%d\n", buffer_track);
pr_info("buffer_min=%d\n", buffer_min);
@@ -2757,31 +2728,21 @@ static int make_raw_rw_request(void)
return 0;
}
- if (raw_cmd->kernel_data != bio_data(current_req->bio)) {
- if (raw_cmd->kernel_data < floppy_track_buffer ||
- current_count_sectors < 0 ||
- raw_cmd->length < 0 ||
- raw_cmd->kernel_data + raw_cmd->length >
- floppy_track_buffer + (max_buffer_sectors << 10)) {
- DPRINT("buffer overrun in schedule dma\n");
- pr_info("fsector_t=%d buffer_min=%d current_count=%ld\n",
- fsector_t, buffer_min, raw_cmd->length >> 9);
- pr_info("current_count_sectors=%ld\n",
- current_count_sectors);
- if (CT(COMMAND) == FD_READ)
- pr_info("read\n");
- if (CT(COMMAND) == FD_WRITE)
- pr_info("write\n");
- return 0;
- }
- } else if (raw_cmd->length > blk_rq_bytes(current_req) ||
- current_count_sectors > blk_rq_sectors(current_req)) {
- DPRINT("buffer overrun in direct transfer\n");
+ if (raw_cmd->kernel_data < floppy_track_buffer ||
+ current_count_sectors < 0 ||
+ raw_cmd->length < 0 ||
+ raw_cmd->kernel_data + raw_cmd->length >
+ floppy_track_buffer + (max_buffer_sectors << 10)) {
+ DPRINT("buffer overrun in schedule dma\n");
+ pr_info("fsector_t=%d buffer_min=%d current_count=%ld\n",
+ fsector_t, buffer_min, raw_cmd->length >> 9);
+ pr_info("current_count_sectors=%ld\n",
+ current_count_sectors);
+ if (CT(raw_cmd->cmd[COMMAND]) == FD_READ)
+ pr_info("read\n");
+ if (CT(raw_cmd->cmd[COMMAND]) == FD_WRITE)
+ pr_info("write\n");
return 0;
- } else if (raw_cmd->length < current_count_sectors << 9) {
- DPRINT("more sectors than bytes\n");
- pr_info("bytes=%ld\n", raw_cmd->length >> 9);
- pr_info("sectors=%ld\n", current_count_sectors);
}
if (raw_cmd->length == 0) {
DPRINT("zero dma transfer attempted from make_raw_request\n");
@@ -2797,12 +2758,16 @@ static int set_next_request(void)
current_req = list_first_entry_or_null(&floppy_reqs, struct request,
queuelist);
if (current_req) {
- current_req->error_count = 0;
+ floppy_errors = 0;
list_del_init(&current_req->queuelist);
+ return 1;
}
- return current_req != NULL;
+ return 0;
}
+/* Starts or continues processing request. Will automatically unlock the
+ * driver at end of request.
+ */
static void redo_fd_request(void)
{
int drive;
@@ -2820,14 +2785,13 @@ do_request:
pending = set_next_request();
spin_unlock_irq(&floppy_lock);
if (!pending) {
- do_floppy = NULL;
unlock_fdc();
return;
}
}
- drive = (long)current_req->rq_disk->private_data;
+ drive = (long)current_req->q->disk->private_data;
set_fdc(drive);
- reschedule_timeout(current_reqD, "redo fd request");
+ reschedule_timeout(current_drive, "redo fd request");
set_floppy(drive);
raw_cmd = &default_raw_cmd;
@@ -2837,15 +2801,15 @@ do_request:
disk_change(current_drive);
if (test_bit(current_drive, &fake_change) ||
- test_bit(FD_DISK_CHANGED_BIT, &DRS->flags)) {
+ test_bit(FD_DISK_CHANGED_BIT, &drive_state[current_drive].flags)) {
DPRINT("disk absent or changed during operation\n");
request_done(0);
goto do_request;
}
if (!_floppy) { /* Autodetection */
if (!probing) {
- DRS->probed_format = 0;
- if (next_valid_format()) {
+ drive_state[current_drive].probed_format = 0;
+ if (next_valid_format(current_drive)) {
DPRINT("no autodetectable formats\n");
_floppy = NULL;
request_done(0);
@@ -2853,18 +2817,17 @@ do_request:
}
}
probing = 1;
- _floppy = floppy_type + DP->autodetect[DRS->probed_format];
+ _floppy = floppy_type + drive_params[current_drive].autodetect[drive_state[current_drive].probed_format];
} else
probing = 0;
- errors = &(current_req->error_count);
tmp = make_raw_rw_request();
if (tmp < 2) {
request_done(tmp);
goto do_request;
}
- if (test_bit(FD_NEED_TWADDLE_BIT, &DRS->flags))
- twaddle();
+ if (test_bit(FD_NEED_TWADDLE_BIT, &drive_state[current_drive].flags))
+ twaddle(current_fdc, current_drive);
schedule_bh(floppy_start);
debugt(__func__, "queue fd request");
return;
@@ -2877,6 +2840,7 @@ static const struct cont_t rw_cont = {
.done = request_done
};
+/* schedule the request and automatically unlock the driver on completion */
static void process_fd_request(void)
{
cont = &rw_cont;
@@ -2895,20 +2859,20 @@ static blk_status_t floppy_queue_rq(struct blk_mq_hw_ctx *hctx,
if (WARN(atomic_read(&usage_count) == 0,
"warning: usage count=0, current_req=%p sect=%ld flags=%llx\n",
current_req, (long)blk_rq_pos(current_req),
- (unsigned long long) current_req->cmd_flags))
+ (__force unsigned long long) current_req->cmd_flags))
return BLK_STS_IOERR;
- spin_lock_irq(&floppy_lock);
- list_add_tail(&bd->rq->queuelist, &floppy_reqs);
- spin_unlock_irq(&floppy_lock);
-
if (test_and_set_bit(0, &fdc_busy)) {
/* fdc busy, this new request will be treated when the
current one is done */
is_alive(__func__, "old request running");
- return BLK_STS_OK;
+ return BLK_STS_RESOURCE;
}
+ spin_lock_irq(&floppy_lock);
+ list_add_tail(&bd->rq->queuelist, &floppy_reqs);
+ spin_unlock_irq(&floppy_lock);
+
command_status = FD_COMMAND_NONE;
__reschedule_timeout(MAXTIMEOUT, "fd_request");
set_fdc(0);
@@ -2932,8 +2896,9 @@ static int poll_drive(bool interruptible, int flag)
raw_cmd->track = 0;
raw_cmd->cmd_count = 0;
cont = &poll_cont;
- debug_dcl(DP->flags, "setting NEWCHANGE in poll_drive\n");
- set_bit(FD_DISK_NEWCHANGE_BIT, &DRS->flags);
+ debug_dcl(drive_params[current_drive].flags,
+ "setting NEWCHANGE in poll_drive\n");
+ set_bit(FD_DISK_NEWCHANGE_BIT, &drive_state[current_drive].flags);
return wait_til_done(floppy_ready, interruptible);
}
@@ -2955,6 +2920,10 @@ static const struct cont_t reset_cont = {
.done = generic_done
};
+/*
+ * Resets the FDC connected to drive <drive>.
+ * Both current_drive and current_fdc are changed to match the new drive.
+ */
static int user_reset_fdc(int drive, int arg, bool interruptible)
{
int ret;
@@ -2963,8 +2932,11 @@ static int user_reset_fdc(int drive, int arg, bool interruptible)
return -EINTR;
if (arg == FD_RESET_ALWAYS)
- FDCS->reset = 1;
- if (FDCS->reset) {
+ fdc_state[current_fdc].reset = 1;
+ if (fdc_state[current_fdc].reset) {
+ /* note: reset_fdc will take care of unlocking the driver
+ * on completion.
+ */
cont = &reset_cont;
ret = wait_til_done(reset_fdc, interruptible);
if (ret == -EINTR)
@@ -2997,8 +2969,8 @@ static const char *drive_name(int type, int drive)
if (type)
floppy = floppy_type + type;
else {
- if (UDP->native_format)
- floppy = floppy_type + UDP->native_format;
+ if (drive_params[drive].native_format)
+ floppy = floppy_type + drive_params[drive].native_format;
else
return "(null)";
}
@@ -3008,20 +2980,19 @@ static const char *drive_name(int type, int drive)
return "(null)";
}
+#ifdef CONFIG_BLK_DEV_FD_RAWCMD
+
/* raw commands */
static void raw_cmd_done(int flag)
{
- int i;
-
if (!flag) {
raw_cmd->flags |= FD_RAW_FAILURE;
raw_cmd->flags |= FD_RAW_HARDFAILURE;
} else {
raw_cmd->reply_count = inr;
- if (raw_cmd->reply_count > MAX_REPLIES)
+ if (raw_cmd->reply_count > FD_RAW_REPLY_SIZE)
raw_cmd->reply_count = 0;
- for (i = 0; i < raw_cmd->reply_count; i++)
- raw_cmd->reply[i] = reply_buffer[i];
+ memcpy(raw_cmd->reply, reply_buffer, raw_cmd->reply_count);
if (raw_cmd->flags & (FD_RAW_READ | FD_RAW_WRITE)) {
unsigned long flags;
@@ -3108,44 +3079,33 @@ static void raw_cmd_free(struct floppy_raw_cmd **ptr)
}
}
+#define MAX_LEN (1UL << MAX_PAGE_ORDER << PAGE_SHIFT)
+
static int raw_cmd_copyin(int cmd, void __user *param,
struct floppy_raw_cmd **rcmd)
{
struct floppy_raw_cmd *ptr;
int ret;
- int i;
*rcmd = NULL;
loop:
- ptr = kmalloc(sizeof(struct floppy_raw_cmd), GFP_KERNEL);
- if (!ptr)
- return -ENOMEM;
+ ptr = memdup_user(param, sizeof(*ptr));
+ if (IS_ERR(ptr))
+ return PTR_ERR(ptr);
*rcmd = ptr;
- ret = copy_from_user(ptr, param, sizeof(*ptr));
ptr->next = NULL;
ptr->buffer_length = 0;
ptr->kernel_data = NULL;
- if (ret)
- return -EFAULT;
param += sizeof(struct floppy_raw_cmd);
- if (ptr->cmd_count > 33)
- /* the command may now also take up the space
- * initially intended for the reply & the
- * reply count. Needed for long 82078 commands
- * such as RESTORE, which takes ... 17 command
- * bytes. Murphy's law #137: When you reserve
- * 16 bytes for a structure, you'll one day
- * discover that you really need 17...
- */
+ if (ptr->cmd_count > FD_RAW_CMD_FULLSIZE)
return -EINVAL;
- for (i = 0; i < 16; i++)
- ptr->reply[i] = 0;
+ memset(ptr->reply, 0, FD_RAW_REPLY_SIZE);
ptr->resultcode = 0;
if (ptr->flags & (FD_RAW_READ | FD_RAW_WRITE)) {
- if (ptr->length <= 0)
+ if (ptr->length <= 0 || ptr->length > MAX_LEN)
return -EINVAL;
ptr->kernel_data = (char *)fd_dma_mem_alloc(ptr->length);
fallback_on_nodma_alloc(&ptr->kernel_data, ptr->length);
@@ -3175,23 +3135,23 @@ static int raw_cmd_ioctl(int cmd, void __user *param)
int ret2;
int ret;
- if (FDCS->rawcmd <= 1)
- FDCS->rawcmd = 1;
+ if (fdc_state[current_fdc].rawcmd <= 1)
+ fdc_state[current_fdc].rawcmd = 1;
for (drive = 0; drive < N_DRIVE; drive++) {
- if (FDC(drive) != fdc)
+ if (FDC(drive) != current_fdc)
continue;
if (drive == current_drive) {
- if (UDRS->fd_ref > 1) {
- FDCS->rawcmd = 2;
+ if (drive_state[drive].fd_ref > 1) {
+ fdc_state[current_fdc].rawcmd = 2;
break;
}
- } else if (UDRS->fd_ref) {
- FDCS->rawcmd = 2;
+ } else if (drive_state[drive].fd_ref) {
+ fdc_state[current_fdc].rawcmd = 2;
break;
}
}
- if (FDCS->reset)
+ if (fdc_state[current_fdc].reset)
return -EIO;
ret = raw_cmd_copyin(cmd, param, &my_raw_cmd);
@@ -3203,12 +3163,13 @@ static int raw_cmd_ioctl(int cmd, void __user *param)
raw_cmd = my_raw_cmd;
cont = &raw_cmd_cont;
ret = wait_til_done(floppy_start, true);
- debug_dcl(DP->flags, "calling disk change from raw_cmd ioctl\n");
+ debug_dcl(drive_params[current_drive].flags,
+ "calling disk change from raw_cmd ioctl\n");
- if (ret != -EINTR && FDCS->reset)
+ if (ret != -EINTR && fdc_state[current_fdc].reset)
ret = -EIO;
- DRS->track = NO_TRACK;
+ drive_state[current_drive].track = NO_TRACK;
ret2 = raw_cmd_copyout(cmd, param, my_raw_cmd);
if (!ret)
@@ -3217,12 +3178,44 @@ static int raw_cmd_ioctl(int cmd, void __user *param)
return ret;
}
-static int invalidate_drive(struct block_device *bdev)
+static int floppy_raw_cmd_ioctl(int type, int drive, int cmd,
+ void __user *param)
+{
+ int ret;
+
+ pr_warn_once("Note: FDRAWCMD is deprecated and will be removed from the kernel in the near future.\n");
+
+ if (type)
+ return -EINVAL;
+ if (lock_fdc(drive))
+ return -EINTR;
+ set_floppy(drive);
+ ret = raw_cmd_ioctl(cmd, param);
+ if (ret == -EINTR)
+ return -EINTR;
+ process_fd_request();
+ return ret;
+}
+
+#else /* CONFIG_BLK_DEV_FD_RAWCMD */
+
+static int floppy_raw_cmd_ioctl(int type, int drive, int cmd,
+ void __user *param)
+{
+ return -EOPNOTSUPP;
+}
+
+#endif
+
+static int invalidate_drive(struct gendisk *disk)
{
/* invalidate the buffer track to force a reread */
- set_bit((long)bdev->bd_disk->private_data, &fake_change);
+ set_bit((long)disk->private_data, &fake_change);
process_fd_request();
- check_disk_change(bdev);
+ if (disk_check_media_change(disk)) {
+ bdev_mark_dead(disk->part0, true);
+ floppy_revalidate(disk);
+ }
return 0;
}
@@ -3232,9 +3225,13 @@ static int set_geometry(unsigned int cmd, struct floppy_struct *g,
int cnt;
/* sanity checking for parameters. */
- if (g->sect <= 0 ||
- g->head <= 0 ||
- g->track <= 0 || g->track > UDP->tracks >> STRETCH(g) ||
+ if ((int)g->sect <= 0 ||
+ (int)g->head <= 0 ||
+ /* check for overflow in max_sector */
+ (int)(g->sect * g->head) <= 0 ||
+ /* check for zero in raw_cmd->cmd[F_SECT_PER_TRACK] */
+ (unsigned char)((g->sect << 2) >> FD_SIZECODE(g)) == 0 ||
+ g->track <= 0 || g->track > drive_params[drive].tracks >> STRETCH(g) ||
/* check if reserved bits are set */
(g->stretch & ~(FD_STRETCH | FD_SWAPSIDES | FD_SECTBASEMASK)) != 0)
return -EINVAL;
@@ -3253,10 +3250,11 @@ static int set_geometry(unsigned int cmd, struct floppy_struct *g,
floppy_type[type].size + 1;
process_fd_request();
for (cnt = 0; cnt < N_DRIVE; cnt++) {
- struct block_device *bdev = opened_bdev[cnt];
- if (!bdev || ITYPE(drive_state[cnt].fd_device) != type)
+ struct gendisk *disk = opened_disk[cnt];
+
+ if (!disk || ITYPE(drive_state[cnt].fd_device) != type)
continue;
- __invalidate_device(bdev, true);
+ disk_force_media_change(disk);
}
mutex_unlock(&open_lock);
} else {
@@ -3277,19 +3275,19 @@ static int set_geometry(unsigned int cmd, struct floppy_struct *g,
current_type[drive] = &user_params[drive];
floppy_sizes[drive] = user_params[drive].size;
if (cmd == FDDEFPRM)
- DRS->keep_data = -1;
+ drive_state[current_drive].keep_data = -1;
else
- DRS->keep_data = 1;
+ drive_state[current_drive].keep_data = 1;
/* invalidation. Invalidate only when needed, i.e.
* when there are already sectors in the buffer cache
* whose number will change. This is useful, because
* mtools often changes the geometry of the disk after
* looking at the boot block */
- if (DRS->maxblock > user_params[drive].sect ||
- DRS->maxtrack ||
+ if (drive_state[current_drive].maxblock > user_params[drive].sect ||
+ drive_state[current_drive].maxtrack ||
((user_params[drive].sect ^ oldStretch) &
(FD_SWAPSIDES | FD_SECTBASEMASK)))
- invalidate_drive(bdev);
+ invalidate_drive(bdev->bd_disk);
else
process_fd_request();
}
@@ -3360,9 +3358,9 @@ static int get_floppy_geometry(int drive, int type, struct floppy_struct **g)
return 0;
}
-static int fd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
+static int fd_getgeo(struct gendisk *disk, struct hd_geometry *geo)
{
- int drive = (long)bdev->bd_disk->private_data;
+ int drive = (long)disk->private_data;
int type = ITYPE(drive_state[drive].fd_device);
struct floppy_struct *g;
int ret;
@@ -3377,12 +3375,29 @@ static int fd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
return 0;
}
-static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
- unsigned long param)
+static bool valid_floppy_drive_params(const short autodetect[FD_AUTODETECT_SIZE],
+ int native_format)
+{
+ size_t floppy_type_size = ARRAY_SIZE(floppy_type);
+ size_t i = 0;
+
+ for (i = 0; i < FD_AUTODETECT_SIZE; ++i) {
+ if (autodetect[i] < 0 ||
+ autodetect[i] >= floppy_type_size)
+ return false;
+ }
+
+ if (native_format < 0 || native_format >= floppy_type_size)
+ return false;
+
+ return true;
+}
+
+static int fd_locked_ioctl(struct block_device *bdev, blk_mode_t mode,
+ unsigned int cmd, unsigned long param)
{
int drive = (long)bdev->bd_disk->private_data;
- int type = ITYPE(UDRS->fd_device);
- int i;
+ int type = ITYPE(drive_state[drive].fd_device);
int ret;
int size;
union inparam {
@@ -3391,7 +3406,7 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int
struct floppy_max_errors max_errors;
struct floppy_drive_params dp;
} inparam; /* parameters coming from user space */
- const void *outparam; /* parameters passed back to user space */
+ const void *outparam = NULL; /* parameters passed back to user space */
/* convert compatibility eject ioctls into floppy eject ioctl.
* We do this in order to provide a means to eject floppy disks before
@@ -3412,7 +3427,8 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int
return ret;
/* permission checks */
- if (((cmd & 0x40) && !(mode & (FMODE_WRITE | FMODE_WRITE_IOCTL))) ||
+ if (((cmd & 0x40) &&
+ !(mode & (BLK_OPEN_WRITE | BLK_OPEN_WRITE_IOCTL))) ||
((cmd & 0x80) && !capable(CAP_SYS_ADMIN)))
return -EPERM;
@@ -3429,7 +3445,7 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int
switch (cmd) {
case FDEJECT:
- if (UDRS->fd_ref != 1)
+ if (drive_state[drive].fd_ref != 1)
/* somebody else has this drive open */
return -EBUSY;
if (lock_fdc(drive))
@@ -3439,8 +3455,8 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int
* non-Sparc architectures */
ret = fd_eject(UNIT(drive));
- set_bit(FD_DISK_CHANGED_BIT, &UDRS->flags);
- set_bit(FD_VERIFY_BIT, &UDRS->flags);
+ set_bit(FD_DISK_CHANGED_BIT, &drive_state[drive].flags);
+ set_bit(FD_VERIFY_BIT, &drive_state[drive].flags);
process_fd_request();
return ret;
case FDCLRPRM:
@@ -3448,8 +3464,8 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int
return -EINTR;
current_type[drive] = NULL;
floppy_sizes[drive] = MAX_DISK_SIZE << 1;
- UDRS->keep_data = 0;
- return invalidate_drive(bdev);
+ drive_state[drive].keep_data = 0;
+ return invalidate_drive(bdev->bd_disk);
case FDSETPRM:
case FDDEFPRM:
return set_geometry(cmd, &inparam.g, drive, type, bdev);
@@ -3463,17 +3479,17 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int
outparam = &inparam.g;
break;
case FDMSGON:
- UDP->flags |= FTD_MSG;
+ drive_params[drive].flags |= FTD_MSG;
return 0;
case FDMSGOFF:
- UDP->flags &= ~FTD_MSG;
+ drive_params[drive].flags &= ~FTD_MSG;
return 0;
case FDFMTBEG:
if (lock_fdc(drive))
return -EINTR;
if (poll_drive(true, FD_RAW_NEED_DISK) == -EINTR)
return -EINTR;
- ret = UDRS->flags;
+ ret = drive_state[drive].flags;
process_fd_request();
if (ret & FD_VERIFY)
return -ENODEV;
@@ -3481,32 +3497,35 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int
return -EROFS;
return 0;
case FDFMTTRK:
- if (UDRS->fd_ref != 1)
+ if (drive_state[drive].fd_ref != 1)
return -EBUSY;
return do_format(drive, &inparam.f);
case FDFMTEND:
case FDFLUSH:
if (lock_fdc(drive))
return -EINTR;
- return invalidate_drive(bdev);
+ return invalidate_drive(bdev->bd_disk);
case FDSETEMSGTRESH:
- UDP->max_errors.reporting = (unsigned short)(param & 0x0f);
+ drive_params[drive].max_errors.reporting = (unsigned short)(param & 0x0f);
return 0;
case FDGETMAXERRS:
- outparam = &UDP->max_errors;
+ outparam = &drive_params[drive].max_errors;
break;
case FDSETMAXERRS:
- UDP->max_errors = inparam.max_errors;
+ drive_params[drive].max_errors = inparam.max_errors;
break;
case FDGETDRVTYP:
outparam = drive_name(type, drive);
SUPBOUND(size, strlen((const char *)outparam) + 1);
break;
case FDSETDRVPRM:
- *UDP = inparam.dp;
+ if (!valid_floppy_drive_params(inparam.dp.autodetect,
+ inparam.dp.native_format))
+ return -EINVAL;
+ drive_params[drive] = inparam.dp;
break;
case FDGETDRVPRM:
- outparam = UDP;
+ outparam = &drive_params[drive];
break;
case FDPOLLDRVSTAT:
if (lock_fdc(drive))
@@ -3514,36 +3533,27 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int
if (poll_drive(true, FD_RAW_NEED_DISK) == -EINTR)
return -EINTR;
process_fd_request();
- /* fall through */
+ fallthrough;
case FDGETDRVSTAT:
- outparam = UDRS;
+ outparam = &drive_state[drive];
break;
case FDRESET:
return user_reset_fdc(drive, (int)param, true);
case FDGETFDCSTAT:
- outparam = UFDCS;
+ outparam = &fdc_state[FDC(drive)];
break;
case FDWERRORCLR:
- memset(UDRWE, 0, sizeof(*UDRWE));
+ memset(&write_errors[drive], 0, sizeof(write_errors[drive]));
return 0;
case FDWERRORGET:
- outparam = UDRWE;
+ outparam = &write_errors[drive];
break;
case FDRAWCMD:
- if (type)
- return -EINVAL;
- if (lock_fdc(drive))
- return -EINTR;
- set_floppy(drive);
- i = raw_cmd_ioctl(cmd, (void __user *)param);
- if (i == -EINTR)
- return -EINTR;
- process_fd_request();
- return i;
+ return floppy_raw_cmd_ioctl(type, drive, cmd, (void __user *)param);
case FDTWADDLE:
if (lock_fdc(drive))
return -EINTR;
- twaddle();
+ twaddle(current_fdc, current_drive);
process_fd_request();
return 0;
default:
@@ -3556,7 +3566,7 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int
return 0;
}
-static int fd_ioctl(struct block_device *bdev, fmode_t mode,
+static int fd_ioctl(struct block_device *bdev, blk_mode_t mode,
unsigned int cmd, unsigned long param)
{
int ret;
@@ -3587,7 +3597,7 @@ struct compat_floppy_drive_params {
struct floppy_max_errors max_errors;
char flags;
char read_track;
- short autodetect[8];
+ short autodetect[FD_AUTODETECT_SIZE];
compat_int_t checkfreq;
compat_int_t native_format;
};
@@ -3644,8 +3654,8 @@ struct compat_floppy_write_errors {
#define FDGETFDCSTAT32 _IOR(2, 0x15, struct compat_floppy_fdc_state)
#define FDWERRORGET32 _IOR(2, 0x17, struct compat_floppy_write_errors)
-static int compat_set_geometry(struct block_device *bdev, fmode_t mode, unsigned int cmd,
- struct compat_floppy_struct __user *arg)
+static int compat_set_geometry(struct block_device *bdev, blk_mode_t mode,
+ unsigned int cmd, struct compat_floppy_struct __user *arg)
{
struct floppy_struct v;
int drive, type;
@@ -3654,7 +3664,7 @@ static int compat_set_geometry(struct block_device *bdev, fmode_t mode, unsigned
BUILD_BUG_ON(offsetof(struct floppy_struct, name) !=
offsetof(struct compat_floppy_struct, name));
- if (!(mode & (FMODE_WRITE | FMODE_WRITE_IOCTL)))
+ if (!(mode & (BLK_OPEN_WRITE | BLK_OPEN_WRITE_IOCTL)))
return -EPERM;
memset(&v, 0, sizeof(struct floppy_struct));
@@ -3663,7 +3673,7 @@ static int compat_set_geometry(struct block_device *bdev, fmode_t mode, unsigned
mutex_lock(&floppy_mutex);
drive = (long)bdev->bd_disk->private_data;
- type = ITYPE(UDRS->fd_device);
+ type = ITYPE(drive_state[drive].fd_device);
err = set_geometry(cmd == FDSETPRM32 ? FDSETPRM : FDDEFPRM,
&v, drive, type, bdev);
mutex_unlock(&floppy_mutex);
@@ -3679,7 +3689,8 @@ static int compat_get_prm(int drive,
memset(&v, 0, sizeof(v));
mutex_lock(&floppy_mutex);
- err = get_floppy_geometry(drive, ITYPE(UDRS->fd_device), &p);
+ err = get_floppy_geometry(drive, ITYPE(drive_state[drive].fd_device),
+ &p);
if (err) {
mutex_unlock(&floppy_mutex);
return err;
@@ -3700,26 +3711,29 @@ static int compat_setdrvprm(int drive,
return -EPERM;
if (copy_from_user(&v, arg, sizeof(struct compat_floppy_drive_params)))
return -EFAULT;
+ if (!valid_floppy_drive_params(v.autodetect, v.native_format))
+ return -EINVAL;
mutex_lock(&floppy_mutex);
- UDP->cmos = v.cmos;
- UDP->max_dtr = v.max_dtr;
- UDP->hlt = v.hlt;
- UDP->hut = v.hut;
- UDP->srt = v.srt;
- UDP->spinup = v.spinup;
- UDP->spindown = v.spindown;
- UDP->spindown_offset = v.spindown_offset;
- UDP->select_delay = v.select_delay;
- UDP->rps = v.rps;
- UDP->tracks = v.tracks;
- UDP->timeout = v.timeout;
- UDP->interleave_sect = v.interleave_sect;
- UDP->max_errors = v.max_errors;
- UDP->flags = v.flags;
- UDP->read_track = v.read_track;
- memcpy(UDP->autodetect, v.autodetect, sizeof(v.autodetect));
- UDP->checkfreq = v.checkfreq;
- UDP->native_format = v.native_format;
+ drive_params[drive].cmos = v.cmos;
+ drive_params[drive].max_dtr = v.max_dtr;
+ drive_params[drive].hlt = v.hlt;
+ drive_params[drive].hut = v.hut;
+ drive_params[drive].srt = v.srt;
+ drive_params[drive].spinup = v.spinup;
+ drive_params[drive].spindown = v.spindown;
+ drive_params[drive].spindown_offset = v.spindown_offset;
+ drive_params[drive].select_delay = v.select_delay;
+ drive_params[drive].rps = v.rps;
+ drive_params[drive].tracks = v.tracks;
+ drive_params[drive].timeout = v.timeout;
+ drive_params[drive].interleave_sect = v.interleave_sect;
+ drive_params[drive].max_errors = v.max_errors;
+ drive_params[drive].flags = v.flags;
+ drive_params[drive].read_track = v.read_track;
+ memcpy(drive_params[drive].autodetect, v.autodetect,
+ sizeof(v.autodetect));
+ drive_params[drive].checkfreq = v.checkfreq;
+ drive_params[drive].native_format = v.native_format;
mutex_unlock(&floppy_mutex);
return 0;
}
@@ -3731,28 +3745,29 @@ static int compat_getdrvprm(int drive,
memset(&v, 0, sizeof(struct compat_floppy_drive_params));
mutex_lock(&floppy_mutex);
- v.cmos = UDP->cmos;
- v.max_dtr = UDP->max_dtr;
- v.hlt = UDP->hlt;
- v.hut = UDP->hut;
- v.srt = UDP->srt;
- v.spinup = UDP->spinup;
- v.spindown = UDP->spindown;
- v.spindown_offset = UDP->spindown_offset;
- v.select_delay = UDP->select_delay;
- v.rps = UDP->rps;
- v.tracks = UDP->tracks;
- v.timeout = UDP->timeout;
- v.interleave_sect = UDP->interleave_sect;
- v.max_errors = UDP->max_errors;
- v.flags = UDP->flags;
- v.read_track = UDP->read_track;
- memcpy(v.autodetect, UDP->autodetect, sizeof(v.autodetect));
- v.checkfreq = UDP->checkfreq;
- v.native_format = UDP->native_format;
+ v.cmos = drive_params[drive].cmos;
+ v.max_dtr = drive_params[drive].max_dtr;
+ v.hlt = drive_params[drive].hlt;
+ v.hut = drive_params[drive].hut;
+ v.srt = drive_params[drive].srt;
+ v.spinup = drive_params[drive].spinup;
+ v.spindown = drive_params[drive].spindown;
+ v.spindown_offset = drive_params[drive].spindown_offset;
+ v.select_delay = drive_params[drive].select_delay;
+ v.rps = drive_params[drive].rps;
+ v.tracks = drive_params[drive].tracks;
+ v.timeout = drive_params[drive].timeout;
+ v.interleave_sect = drive_params[drive].interleave_sect;
+ v.max_errors = drive_params[drive].max_errors;
+ v.flags = drive_params[drive].flags;
+ v.read_track = drive_params[drive].read_track;
+ memcpy(v.autodetect, drive_params[drive].autodetect,
+ sizeof(v.autodetect));
+ v.checkfreq = drive_params[drive].checkfreq;
+ v.native_format = drive_params[drive].native_format;
mutex_unlock(&floppy_mutex);
- if (copy_from_user(arg, &v, sizeof(struct compat_floppy_drive_params)))
+ if (copy_to_user(arg, &v, sizeof(struct compat_floppy_drive_params)))
return -EFAULT;
return 0;
}
@@ -3772,23 +3787,23 @@ static int compat_getdrvstat(int drive, bool poll,
goto Eintr;
process_fd_request();
}
- v.spinup_date = UDRS->spinup_date;
- v.select_date = UDRS->select_date;
- v.first_read_date = UDRS->first_read_date;
- v.probed_format = UDRS->probed_format;
- v.track = UDRS->track;
- v.maxblock = UDRS->maxblock;
- v.maxtrack = UDRS->maxtrack;
- v.generation = UDRS->generation;
- v.keep_data = UDRS->keep_data;
- v.fd_ref = UDRS->fd_ref;
- v.fd_device = UDRS->fd_device;
- v.last_checked = UDRS->last_checked;
- v.dmabuf = (uintptr_t)UDRS->dmabuf;
- v.bufblocks = UDRS->bufblocks;
+ v.spinup_date = drive_state[drive].spinup_date;
+ v.select_date = drive_state[drive].select_date;
+ v.first_read_date = drive_state[drive].first_read_date;
+ v.probed_format = drive_state[drive].probed_format;
+ v.track = drive_state[drive].track;
+ v.maxblock = drive_state[drive].maxblock;
+ v.maxtrack = drive_state[drive].maxtrack;
+ v.generation = drive_state[drive].generation;
+ v.keep_data = drive_state[drive].keep_data;
+ v.fd_ref = drive_state[drive].fd_ref;
+ v.fd_device = drive_state[drive].fd_device;
+ v.last_checked = drive_state[drive].last_checked;
+ v.dmabuf = (uintptr_t) drive_state[drive].dmabuf;
+ v.bufblocks = drive_state[drive].bufblocks;
mutex_unlock(&floppy_mutex);
- if (copy_from_user(arg, &v, sizeof(struct compat_floppy_drive_struct)))
+ if (copy_to_user(arg, &v, sizeof(struct compat_floppy_drive_struct)))
return -EFAULT;
return 0;
Eintr:
@@ -3803,7 +3818,7 @@ static int compat_getfdcstat(int drive,
struct floppy_fdc_state v;
mutex_lock(&floppy_mutex);
- v = *UFDCS;
+ v = fdc_state[FDC(drive)];
mutex_unlock(&floppy_mutex);
memset(&v32, 0, sizeof(struct compat_floppy_fdc_state));
@@ -3833,7 +3848,7 @@ static int compat_werrorget(int drive,
memset(&v32, 0, sizeof(struct compat_floppy_write_errors));
mutex_lock(&floppy_mutex);
- v = *UDRWE;
+ v = write_errors[drive];
mutex_unlock(&floppy_mutex);
v32.write_errors = v.write_errors;
v32.first_error_sector = v.first_error_sector;
@@ -3846,11 +3861,14 @@ static int compat_werrorget(int drive,
return 0;
}
-static int fd_compat_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
- unsigned long param)
+static int fd_compat_ioctl(struct block_device *bdev, blk_mode_t mode,
+ unsigned int cmd, unsigned long param)
{
int drive = (long)bdev->bd_disk->private_data;
switch (cmd) {
+ case CDROMEJECT: /* CD-ROM eject */
+ case 0x6470: /* SunOS floppy eject */
+
case FDMSGON:
case FDMSGOFF:
case FDSETEMSGTRESH:
@@ -3899,16 +3917,16 @@ static void __init config_types(void)
/* read drive info out of physical CMOS */
drive = 0;
- if (!UDP->cmos)
- UDP->cmos = FLOPPY0_TYPE;
+ if (!drive_params[drive].cmos)
+ drive_params[drive].cmos = FLOPPY0_TYPE;
drive = 1;
- if (!UDP->cmos && FLOPPY1_TYPE)
- UDP->cmos = FLOPPY1_TYPE;
+ if (!drive_params[drive].cmos)
+ drive_params[drive].cmos = FLOPPY1_TYPE;
/* FIXME: additional physical CMOS drive detection should go here */
for (drive = 0; drive < N_DRIVE; drive++) {
- unsigned int type = UDP->cmos;
+ unsigned int type = drive_params[drive].cmos;
struct floppy_drive_params *params;
const char *name = NULL;
char temparea[32];
@@ -3938,25 +3956,25 @@ static void __init config_types(void)
pr_cont("%s fd%d is %s", prepend, drive, name);
}
- *UDP = *params;
+ drive_params[drive] = *params;
}
if (has_drive)
pr_cont("\n");
}
-static void floppy_release(struct gendisk *disk, fmode_t mode)
+static void floppy_release(struct gendisk *disk)
{
int drive = (long)disk->private_data;
mutex_lock(&floppy_mutex);
mutex_lock(&open_lock);
- if (!UDRS->fd_ref--) {
+ if (!drive_state[drive].fd_ref--) {
DPRINT("floppy_release with fd_ref == 0");
- UDRS->fd_ref = 0;
+ drive_state[drive].fd_ref = 0;
}
- if (!UDRS->fd_ref)
- opened_bdev[drive] = NULL;
+ if (!drive_state[drive].fd_ref)
+ opened_disk[drive] = NULL;
mutex_unlock(&open_lock);
mutex_unlock(&floppy_mutex);
}
@@ -3966,9 +3984,9 @@ static void floppy_release(struct gendisk *disk, fmode_t mode)
* /dev/PS0 etc), and disallows simultaneous access to the same
* drive with different device numbers.
*/
-static int floppy_open(struct block_device *bdev, fmode_t mode)
+static int floppy_open(struct gendisk *disk, blk_mode_t mode)
{
- int drive = (long)bdev->bd_disk->private_data;
+ int drive = (long)disk->private_data;
int old_dev, new_dev;
int try;
int res = -EBUSY;
@@ -3976,25 +3994,25 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
mutex_lock(&floppy_mutex);
mutex_lock(&open_lock);
- old_dev = UDRS->fd_device;
- if (opened_bdev[drive] && opened_bdev[drive] != bdev)
+ old_dev = drive_state[drive].fd_device;
+ if (opened_disk[drive] && opened_disk[drive] != disk)
goto out2;
- if (!UDRS->fd_ref && (UDP->flags & FD_BROKEN_DCL)) {
- set_bit(FD_DISK_CHANGED_BIT, &UDRS->flags);
- set_bit(FD_VERIFY_BIT, &UDRS->flags);
+ if (!drive_state[drive].fd_ref && (drive_params[drive].flags & FD_BROKEN_DCL)) {
+ set_bit(FD_DISK_CHANGED_BIT, &drive_state[drive].flags);
+ set_bit(FD_VERIFY_BIT, &drive_state[drive].flags);
}
- UDRS->fd_ref++;
+ drive_state[drive].fd_ref++;
- opened_bdev[drive] = bdev;
+ opened_disk[drive] = disk;
res = -ENXIO;
if (!floppy_track_buffer) {
/* if opening an ED drive, reserve a big buffer,
* else reserve a small one */
- if ((UDP->cmos == 6) || (UDP->cmos == 5))
+ if ((drive_params[drive].cmos == 6) || (drive_params[drive].cmos == 5))
try = 64; /* Only 48 actually useful */
else
try = 32; /* Only 24 actually useful */
@@ -4021,40 +4039,41 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
}
}
- new_dev = MINOR(bdev->bd_dev);
- UDRS->fd_device = new_dev;
- set_capacity(disks[drive], floppy_sizes[new_dev]);
+ new_dev = disk->first_minor;
+ drive_state[drive].fd_device = new_dev;
+ set_capacity(disks[drive][ITYPE(new_dev)], floppy_sizes[new_dev]);
if (old_dev != -1 && old_dev != new_dev) {
if (buffer_drive == drive)
buffer_track = -1;
}
- if (UFDCS->rawcmd == 1)
- UFDCS->rawcmd = 2;
-
- if (!(mode & FMODE_NDELAY)) {
- if (mode & (FMODE_READ|FMODE_WRITE)) {
- UDRS->last_checked = 0;
- clear_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags);
- check_disk_change(bdev);
- if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags))
+ if (fdc_state[FDC(drive)].rawcmd == 1)
+ fdc_state[FDC(drive)].rawcmd = 2;
+ if (!(mode & BLK_OPEN_NDELAY)) {
+ if (mode & (BLK_OPEN_READ | BLK_OPEN_WRITE)) {
+ drive_state[drive].last_checked = 0;
+ clear_bit(FD_OPEN_SHOULD_FAIL_BIT,
+ &drive_state[drive].flags);
+ if (disk_check_media_change(disk))
+ floppy_revalidate(disk);
+ if (test_bit(FD_DISK_CHANGED_BIT, &drive_state[drive].flags))
goto out;
- if (test_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags))
+ if (test_bit(FD_OPEN_SHOULD_FAIL_BIT, &drive_state[drive].flags))
goto out;
}
res = -EROFS;
- if ((mode & FMODE_WRITE) &&
- !test_bit(FD_DISK_WRITABLE_BIT, &UDRS->flags))
+ if ((mode & BLK_OPEN_WRITE) &&
+ !test_bit(FD_DISK_WRITABLE_BIT, &drive_state[drive].flags))
goto out;
}
mutex_unlock(&open_lock);
mutex_unlock(&floppy_mutex);
return 0;
out:
- UDRS->fd_ref--;
+ drive_state[drive].fd_ref--;
- if (!UDRS->fd_ref)
- opened_bdev[drive] = NULL;
+ if (!drive_state[drive].fd_ref)
+ opened_disk[drive] = NULL;
out2:
mutex_unlock(&open_lock);
mutex_unlock(&floppy_mutex);
@@ -4069,19 +4088,19 @@ static unsigned int floppy_check_events(struct gendisk *disk,
{
int drive = (long)disk->private_data;
- if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags) ||
- test_bit(FD_VERIFY_BIT, &UDRS->flags))
+ if (test_bit(FD_DISK_CHANGED_BIT, &drive_state[drive].flags) ||
+ test_bit(FD_VERIFY_BIT, &drive_state[drive].flags))
return DISK_EVENT_MEDIA_CHANGE;
- if (time_after(jiffies, UDRS->last_checked + UDP->checkfreq)) {
+ if (time_after(jiffies, drive_state[drive].last_checked + drive_params[drive].checkfreq)) {
if (lock_fdc(drive))
- return -EINTR;
+ return 0;
poll_drive(false, 0);
process_fd_request();
}
- if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags) ||
- test_bit(FD_VERIFY_BIT, &UDRS->flags) ||
+ if (test_bit(FD_DISK_CHANGED_BIT, &drive_state[drive].flags) ||
+ test_bit(FD_VERIFY_BIT, &drive_state[drive].flags) ||
test_bit(drive, &fake_change) ||
drive_no_geom(drive))
return DISK_EVENT_MEDIA_CHANGE;
@@ -4107,7 +4126,7 @@ static void floppy_rb0_cb(struct bio *bio)
if (bio->bi_status) {
pr_info("floppy: error %d while reading block 0\n",
bio->bi_status);
- set_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags);
+ set_bit(FD_OPEN_SHOULD_FAIL_BIT, &drive_state[drive].flags);
}
complete(&cbdata->complete);
}
@@ -4118,7 +4137,6 @@ static int __floppy_read_block_0(struct block_device *bdev, int drive)
struct bio_vec bio_vec;
struct page *page;
struct rb0_cbdata cbdata;
- size_t size;
page = alloc_page(GFP_NOIO);
if (!page) {
@@ -4126,21 +4144,15 @@ static int __floppy_read_block_0(struct block_device *bdev, int drive)
return -ENOMEM;
}
- size = bdev->bd_block_size;
- if (!size)
- size = 1024;
-
cbdata.drive = drive;
- bio_init(&bio, &bio_vec, 1);
- bio_set_dev(&bio, bdev);
- bio_add_page(&bio, page, size, 0);
+ bio_init(&bio, bdev, &bio_vec, 1, REQ_OP_READ);
+ __bio_add_page(&bio, page, block_size(bdev), 0);
bio.bi_iter.bi_sector = 0;
bio.bi_flags |= (1 << BIO_QUIET);
bio.bi_private = &cbdata;
bio.bi_end_io = floppy_rb0_cb;
- bio_set_op_attrs(&bio, REQ_OP_READ, 0);
init_completion(&cbdata.complete);
@@ -4164,8 +4176,8 @@ static int floppy_revalidate(struct gendisk *disk)
int cf;
int res = 0;
- if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags) ||
- test_bit(FD_VERIFY_BIT, &UDRS->flags) ||
+ if (test_bit(FD_DISK_CHANGED_BIT, &drive_state[drive].flags) ||
+ test_bit(FD_VERIFY_BIT, &drive_state[drive].flags) ||
test_bit(drive, &fake_change) ||
drive_no_geom(drive)) {
if (WARN(atomic_read(&usage_count) == 0,
@@ -4175,30 +4187,31 @@ static int floppy_revalidate(struct gendisk *disk)
res = lock_fdc(drive);
if (res)
return res;
- cf = (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags) ||
- test_bit(FD_VERIFY_BIT, &UDRS->flags));
+ cf = (test_bit(FD_DISK_CHANGED_BIT, &drive_state[drive].flags) ||
+ test_bit(FD_VERIFY_BIT, &drive_state[drive].flags));
if (!(cf || test_bit(drive, &fake_change) || drive_no_geom(drive))) {
process_fd_request(); /*already done by another thread */
return 0;
}
- UDRS->maxblock = 0;
- UDRS->maxtrack = 0;
+ drive_state[drive].maxblock = 0;
+ drive_state[drive].maxtrack = 0;
if (buffer_drive == drive)
buffer_track = -1;
clear_bit(drive, &fake_change);
- clear_bit(FD_DISK_CHANGED_BIT, &UDRS->flags);
+ clear_bit(FD_DISK_CHANGED_BIT, &drive_state[drive].flags);
if (cf)
- UDRS->generation++;
+ drive_state[drive].generation++;
if (drive_no_geom(drive)) {
/* auto-sensing */
- res = __floppy_read_block_0(opened_bdev[drive], drive);
+ res = __floppy_read_block_0(opened_disk[drive]->part0,
+ drive);
} else {
if (cf)
poll_drive(false, FD_RAW_NEED_DISK);
process_fd_request();
}
}
- set_capacity(disk, floppy_sizes[UDRS->fd_device]);
+ set_capacity(disk, floppy_sizes[drive_state[drive].fd_device]);
return res;
}
@@ -4209,7 +4222,6 @@ static const struct block_device_operations floppy_fops = {
.ioctl = fd_ioctl,
.getgeo = fd_getgeo,
.check_events = floppy_check_events,
- .revalidate_disk = floppy_revalidate,
#ifdef CONFIG_COMPAT
.compat_ioctl = fd_compat_ioctl,
#endif
@@ -4222,17 +4234,17 @@ static const struct block_device_operations floppy_fops = {
/* Determine the floppy disk controller type */
/* This routine was written by David C. Niemi */
-static char __init get_fdc_version(void)
+static char __init get_fdc_version(int fdc)
{
int r;
- output_byte(FD_DUMPREGS); /* 82072 and better know DUMPREGS */
- if (FDCS->reset)
+ output_byte(fdc, FD_DUMPREGS); /* 82072 and better know DUMPREGS */
+ if (fdc_state[fdc].reset)
return FDC_NONE;
- r = result();
+ r = result(fdc);
if (r <= 0x00)
return FDC_NONE; /* No FDC present ??? */
- if ((r == 1) && (reply_buffer[0] == 0x80)) {
+ if ((r == 1) && (reply_buffer[ST0] == 0x80)) {
pr_info("FDC %d is an 8272A\n", fdc);
return FDC_8272A; /* 8272a/765 don't know DUMPREGS */
}
@@ -4242,43 +4254,43 @@ static char __init get_fdc_version(void)
return FDC_UNKNOWN;
}
- if (!fdc_configure()) {
+ if (!fdc_configure(fdc)) {
pr_info("FDC %d is an 82072\n", fdc);
return FDC_82072; /* 82072 doesn't know CONFIGURE */
}
- output_byte(FD_PERPENDICULAR);
- if (need_more_output() == MORE_OUTPUT) {
- output_byte(0);
+ output_byte(fdc, FD_PERPENDICULAR);
+ if (need_more_output(fdc) == MORE_OUTPUT) {
+ output_byte(fdc, 0);
} else {
pr_info("FDC %d is an 82072A\n", fdc);
return FDC_82072A; /* 82072A as found on Sparcs. */
}
- output_byte(FD_UNLOCK);
- r = result();
- if ((r == 1) && (reply_buffer[0] == 0x80)) {
+ output_byte(fdc, FD_UNLOCK);
+ r = result(fdc);
+ if ((r == 1) && (reply_buffer[ST0] == 0x80)) {
pr_info("FDC %d is a pre-1991 82077\n", fdc);
return FDC_82077_ORIG; /* Pre-1991 82077, doesn't know
* LOCK/UNLOCK */
}
- if ((r != 1) || (reply_buffer[0] != 0x00)) {
+ if ((r != 1) || (reply_buffer[ST0] != 0x00)) {
pr_info("FDC %d init: UNLOCK: unexpected return of %d bytes.\n",
fdc, r);
return FDC_UNKNOWN;
}
- output_byte(FD_PARTID);
- r = result();
+ output_byte(fdc, FD_PARTID);
+ r = result(fdc);
if (r != 1) {
pr_info("FDC %d init: PARTID: unexpected return of %d bytes.\n",
fdc, r);
return FDC_UNKNOWN;
}
- if (reply_buffer[0] == 0x80) {
+ if (reply_buffer[ST0] == 0x80) {
pr_info("FDC %d is a post-1991 82077\n", fdc);
return FDC_82077; /* Revised 82077AA passes all the tests */
}
- switch (reply_buffer[0] >> 5) {
+ switch (reply_buffer[ST0] >> 5) {
case 0x0:
/* Either a 82078-1 or a 82078SL running at 5Volt */
pr_info("FDC %d is an 82078.\n", fdc);
@@ -4294,7 +4306,7 @@ static char __init get_fdc_version(void)
return FDC_87306;
default:
pr_info("FDC %d init: 82078 variant with unknown PARTID=%d.\n",
- fdc, reply_buffer[0] >> 5);
+ fdc, reply_buffer[ST0] >> 5);
return FDC_82078_UNKN;
}
} /* get_fdc_version */
@@ -4350,7 +4362,7 @@ static void __init set_cmos(int *ints, int dummy, int dummy2)
if (current_drive >= 4 && !FDC2)
FDC2 = 0x370;
#endif
- DP->cmos = ints[2];
+ drive_params[current_drive].cmos = ints[2];
DPRINT("setting CMOS code to %d\n", ints[2]);
}
@@ -4426,7 +4438,7 @@ static int __init floppy_setup(char *str)
pr_cont("\n");
} else
DPRINT("botched floppy option\n");
- DPRINT("Read Documentation/blockdev/floppy.txt\n");
+ DPRINT("Read Documentation/admin-guide/blockdev/floppy.rst\n");
return 0;
}
@@ -4439,7 +4451,7 @@ static ssize_t floppy_cmos_show(struct device *dev,
int drive;
drive = p->id;
- return sprintf(buf, "%X\n", UDP->cmos);
+ return sprintf(buf, "%X\n", drive_params[drive].cmos);
}
static DEVICE_ATTR(cmos, 0444, floppy_cmos_show, NULL);
@@ -4458,11 +4470,13 @@ static void floppy_device_release(struct device *dev)
static int floppy_resume(struct device *dev)
{
int fdc;
+ int saved_drive;
+ saved_drive = current_drive;
for (fdc = 0; fdc < N_FDC; fdc++)
- if (FDCS->address != -1)
- user_reset_fdc(-1, FD_RESET_ALWAYS, false);
-
+ if (fdc_state[fdc].address != -1)
+ user_reset_fdc(REVDRIVE(fdc, 0), FD_RESET_ALWAYS, false);
+ set_fdc(saved_drive);
return 0;
}
@@ -4483,6 +4497,7 @@ static const struct blk_mq_ops floppy_mq_ops = {
};
static struct platform_device floppy_device[N_DRIVE];
+static bool registered[N_DRIVE];
static bool floppy_available(int drive)
{
@@ -4493,15 +4508,62 @@ static bool floppy_available(int drive)
return true;
}
-static struct kobject *floppy_find(dev_t dev, int *part, void *data)
+static int floppy_alloc_disk(unsigned int drive, unsigned int type)
{
- int drive = (*part & 3) | ((*part & 0x80) >> 5);
- if (drive >= N_DRIVE || !floppy_available(drive))
- return NULL;
- if (((*part >> 2) & 0x1f) >= ARRAY_SIZE(floppy_type))
- return NULL;
- *part = 0;
- return get_disk_and_module(disks[drive]);
+ struct queue_limits lim = {
+ .max_hw_sectors = 64,
+ .features = BLK_FEAT_ROTATIONAL,
+ };
+ struct gendisk *disk;
+
+ disk = blk_mq_alloc_disk(&tag_sets[drive], &lim, NULL);
+ if (IS_ERR(disk))
+ return PTR_ERR(disk);
+
+ disk->major = FLOPPY_MAJOR;
+ disk->first_minor = TOMINOR(drive) | (type << 2);
+ disk->minors = 1;
+ disk->fops = &floppy_fops;
+ disk->flags |= GENHD_FL_NO_PART;
+ disk->events = DISK_EVENT_MEDIA_CHANGE;
+ if (type)
+ sprintf(disk->disk_name, "fd%d_type%d", drive, type);
+ else
+ sprintf(disk->disk_name, "fd%d", drive);
+ /* to be cleaned up... */
+ disk->private_data = (void *)(long)drive;
+ disk->flags |= GENHD_FL_REMOVABLE;
+
+ disks[drive][type] = disk;
+ return 0;
+}
+
+static DEFINE_MUTEX(floppy_probe_lock);
+
+static void floppy_probe(dev_t dev)
+{
+ unsigned int drive = (MINOR(dev) & 3) | ((MINOR(dev) & 0x80) >> 5);
+ unsigned int type = (MINOR(dev) >> 2) & 0x1f;
+
+ if (drive >= N_DRIVE || !floppy_available(drive) ||
+ type >= ARRAY_SIZE(floppy_type))
+ return;
+
+ mutex_lock(&floppy_probe_lock);
+ if (disks[drive][type])
+ goto out;
+ if (floppy_alloc_disk(drive, type))
+ goto out;
+ if (add_disk(disks[drive][type]))
+ goto cleanup_disk;
+out:
+ mutex_unlock(&floppy_probe_lock);
+ return;
+
+cleanup_disk:
+ put_disk(disks[drive][type]);
+ disks[drive][type] = NULL;
+ mutex_unlock(&floppy_probe_lock);
}
static int __init do_floppy_init(void)
@@ -4523,32 +4585,26 @@ static int __init do_floppy_init(void)
return -ENOMEM;
for (drive = 0; drive < N_DRIVE; drive++) {
- disks[drive] = alloc_disk(1);
- if (!disks[drive]) {
- err = -ENOMEM;
+ memset(&tag_sets[drive], 0, sizeof(tag_sets[drive]));
+ tag_sets[drive].ops = &floppy_mq_ops;
+ tag_sets[drive].nr_hw_queues = 1;
+ tag_sets[drive].nr_maps = 1;
+ tag_sets[drive].queue_depth = 2;
+ tag_sets[drive].numa_node = NUMA_NO_NODE;
+ err = blk_mq_alloc_tag_set(&tag_sets[drive]);
+ if (err)
goto out_put_disk;
- }
- disks[drive]->queue = blk_mq_init_sq_queue(&tag_sets[drive],
- &floppy_mq_ops, 2,
- BLK_MQ_F_SHOULD_MERGE);
- if (IS_ERR(disks[drive]->queue)) {
- err = PTR_ERR(disks[drive]->queue);
- disks[drive]->queue = NULL;
+ err = floppy_alloc_disk(drive, 0);
+ if (err) {
+ blk_mq_free_tag_set(&tag_sets[drive]);
goto out_put_disk;
}
- blk_queue_bounce_limit(disks[drive]->queue, BLK_BOUNCE_HIGH);
- blk_queue_max_hw_sectors(disks[drive]->queue, 64);
- disks[drive]->major = FLOPPY_MAJOR;
- disks[drive]->first_minor = TOMINOR(drive);
- disks[drive]->fops = &floppy_fops;
- sprintf(disks[drive]->disk_name, "fd%d", drive);
-
timer_setup(&motor_off_timer[drive], motor_off_callback, 0);
}
- err = register_blkdev(FLOPPY_MAJOR, "fd");
+ err = __register_blkdev(FLOPPY_MAJOR, "fd", floppy_probe);
if (err)
goto out_put_disk;
@@ -4556,9 +4612,6 @@ static int __init do_floppy_init(void)
if (err)
goto out_unreg_blkdev;
- blk_register_region(MKDEV(FLOPPY_MAJOR, 0), 256, THIS_MODULE,
- floppy_find, NULL, NULL);
-
for (i = 0; i < 256; i++)
if (ITYPE(i))
floppy_sizes[i] = floppy_type[ITYPE(i)].size;
@@ -4569,16 +4622,15 @@ static int __init do_floppy_init(void)
config_types();
for (i = 0; i < N_FDC; i++) {
- fdc = i;
- memset(FDCS, 0, sizeof(*FDCS));
- FDCS->dtr = -1;
- FDCS->dor = 0x4;
+ memset(&fdc_state[i], 0, sizeof(*fdc_state));
+ fdc_state[i].dtr = -1;
+ fdc_state[i].dor = 0x4;
#if defined(__sparc__) || defined(__mc68000__)
/*sparcs/sun3x don't have a DOR reset which we can fall back on to */
#ifdef __mc68000__
if (MACH_IS_SUN3X)
#endif
- FDCS->version = FDC_82072A;
+ fdc_state[i].version = FDC_82072A;
#endif
}
@@ -4587,28 +4639,28 @@ static int __init do_floppy_init(void)
if (fdc_state[0].address == -1) {
cancel_delayed_work(&fd_timeout);
err = -ENODEV;
- goto out_unreg_region;
+ goto out_unreg_driver;
}
#if N_FDC > 1
fdc_state[1].address = FDC2;
#endif
- fdc = 0; /* reset fdc in case of unexpected interrupt */
+ current_fdc = 0; /* reset fdc in case of unexpected interrupt */
err = floppy_grab_irq_and_dma();
if (err) {
cancel_delayed_work(&fd_timeout);
err = -EBUSY;
- goto out_unreg_region;
+ goto out_unreg_driver;
}
/* initialise drive state */
for (drive = 0; drive < N_DRIVE; drive++) {
- memset(UDRS, 0, sizeof(*UDRS));
- memset(UDRWE, 0, sizeof(*UDRWE));
- set_bit(FD_DISK_NEWCHANGE_BIT, &UDRS->flags);
- set_bit(FD_DISK_CHANGED_BIT, &UDRS->flags);
- set_bit(FD_VERIFY_BIT, &UDRS->flags);
- UDRS->fd_device = -1;
+ memset(&drive_state[drive], 0, sizeof(drive_state[drive]));
+ memset(&write_errors[drive], 0, sizeof(write_errors[drive]));
+ set_bit(FD_DISK_NEWCHANGE_BIT, &drive_state[drive].flags);
+ set_bit(FD_DISK_CHANGED_BIT, &drive_state[drive].flags);
+ set_bit(FD_VERIFY_BIT, &drive_state[drive].flags);
+ drive_state[drive].fd_device = -1;
floppy_track_buffer = NULL;
max_buffer_sectors = 0;
}
@@ -4620,29 +4672,29 @@ static int __init do_floppy_init(void)
msleep(10);
for (i = 0; i < N_FDC; i++) {
- fdc = i;
- FDCS->driver_version = FD_DRIVER_VERSION;
+ fdc_state[i].driver_version = FD_DRIVER_VERSION;
for (unit = 0; unit < 4; unit++)
- FDCS->track[unit] = 0;
- if (FDCS->address == -1)
+ fdc_state[i].track[unit] = 0;
+ if (fdc_state[i].address == -1)
continue;
- FDCS->rawcmd = 2;
- if (user_reset_fdc(-1, FD_RESET_ALWAYS, false)) {
+ fdc_state[i].rawcmd = 2;
+ if (user_reset_fdc(REVDRIVE(i, 0), FD_RESET_ALWAYS, false)) {
/* free ioports reserved by floppy_grab_irq_and_dma() */
- floppy_release_regions(fdc);
- FDCS->address = -1;
- FDCS->version = FDC_NONE;
+ floppy_release_regions(i);
+ fdc_state[i].address = -1;
+ fdc_state[i].version = FDC_NONE;
continue;
}
/* Try to determine the floppy controller type */
- FDCS->version = get_fdc_version();
- if (FDCS->version == FDC_NONE) {
+ fdc_state[i].version = get_fdc_version(i);
+ if (fdc_state[i].version == FDC_NONE) {
/* free ioports reserved by floppy_grab_irq_and_dma() */
- floppy_release_regions(fdc);
- FDCS->address = -1;
+ floppy_release_regions(i);
+ fdc_state[i].address = -1;
continue;
}
- if (can_use_virtual_dma == 2 && FDCS->version < FDC_82072A)
+ if (can_use_virtual_dma == 2 &&
+ fdc_state[i].version < FDC_82072A)
can_use_virtual_dma = 0;
have_no_fdc = 0;
@@ -4650,9 +4702,9 @@ static int __init do_floppy_init(void)
* properly, so force a reset for the standard FDC clones,
* to avoid interrupt garbage.
*/
- user_reset_fdc(-1, FD_RESET_ALWAYS, false);
+ user_reset_fdc(REVDRIVE(i, 0), FD_RESET_ALWAYS, false);
}
- fdc = 0;
+ current_fdc = 0;
cancel_delayed_work(&fd_timeout);
current_drive = 0;
initialized = true;
@@ -4675,10 +4727,12 @@ static int __init do_floppy_init(void)
if (err)
goto out_remove_drives;
- /* to be cleaned up... */
- disks[drive]->private_data = (void *)(long)drive;
- disks[drive]->flags |= GENHD_FL_REMOVABLE;
- device_add_disk(&floppy_device[drive].dev, disks[drive], NULL);
+ registered[drive] = true;
+
+ err = device_add_disk(&floppy_device[drive].dev,
+ disks[drive][0], NULL);
+ if (err)
+ goto out_remove_drives;
}
return 0;
@@ -4686,30 +4740,26 @@ static int __init do_floppy_init(void)
out_remove_drives:
while (drive--) {
if (floppy_available(drive)) {
- del_gendisk(disks[drive]);
- platform_device_unregister(&floppy_device[drive]);
+ del_gendisk(disks[drive][0]);
+ if (registered[drive])
+ platform_device_unregister(&floppy_device[drive]);
}
}
out_release_dma:
if (atomic_read(&usage_count))
floppy_release_irq_and_dma();
-out_unreg_region:
- blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256);
+out_unreg_driver:
platform_driver_unregister(&floppy_driver);
out_unreg_blkdev:
unregister_blkdev(FLOPPY_MAJOR, "fd");
out_put_disk:
destroy_workqueue(floppy_wq);
for (drive = 0; drive < N_DRIVE; drive++) {
- if (!disks[drive])
+ if (!disks[drive][0])
break;
- if (disks[drive]->queue) {
- del_timer_sync(&motor_off_timer[drive]);
- blk_cleanup_queue(disks[drive]->queue);
- disks[drive]->queue = NULL;
- blk_mq_free_tag_set(&tag_sets[drive]);
- }
- put_disk(disks[drive]);
+ timer_delete_sync(&motor_off_timer[drive]);
+ put_disk(disks[drive][0]);
+ blk_mq_free_tag_set(&tag_sets[drive]);
}
return err;
}
@@ -4748,7 +4798,7 @@ static void floppy_release_allocated_regions(int fdc, const struct io_region *p)
{
while (p != io_regions) {
p--;
- release_region(FDCS->address + p->offset, p->size);
+ release_region(fdc_state[fdc].address + p->offset, p->size);
}
}
@@ -4759,10 +4809,10 @@ static int floppy_request_regions(int fdc)
const struct io_region *p;
for (p = io_regions; p < ARRAY_END(io_regions); p++) {
- if (!request_region(FDCS->address + p->offset,
+ if (!request_region(fdc_state[fdc].address + p->offset,
p->size, "floppy")) {
DPRINT("Floppy io-port 0x%04lx in use\n",
- FDCS->address + p->offset);
+ fdc_state[fdc].address + p->offset);
floppy_release_allocated_regions(fdc, p);
return -EBUSY;
}
@@ -4777,6 +4827,8 @@ static void floppy_release_regions(int fdc)
static int floppy_grab_irq_and_dma(void)
{
+ int fdc;
+
if (atomic_inc_return(&usage_count) > 1)
return 0;
@@ -4805,28 +4857,28 @@ static int floppy_grab_irq_and_dma(void)
}
for (fdc = 0; fdc < N_FDC; fdc++) {
- if (FDCS->address != -1) {
+ if (fdc_state[fdc].address != -1) {
if (floppy_request_regions(fdc))
goto cleanup;
}
}
for (fdc = 0; fdc < N_FDC; fdc++) {
- if (FDCS->address != -1) {
- reset_fdc_info(1);
- fd_outb(FDCS->dor, FD_DOR);
+ if (fdc_state[fdc].address != -1) {
+ reset_fdc_info(fdc, 1);
+ fdc_outb(fdc_state[fdc].dor, fdc, FD_DOR);
}
}
- fdc = 0;
+
set_dor(0, ~0, 8); /* avoid immediate interrupt */
for (fdc = 0; fdc < N_FDC; fdc++)
- if (FDCS->address != -1)
- fd_outb(FDCS->dor, FD_DOR);
+ if (fdc_state[fdc].address != -1)
+ fdc_outb(fdc_state[fdc].dor, fdc, FD_DOR);
/*
* The driver will try and free resources and relies on us
* to know if they were allocated or not.
*/
- fdc = 0;
+ current_fdc = 0;
irqdma_allocated = 1;
return 0;
cleanup:
@@ -4834,13 +4886,14 @@ cleanup:
fd_free_dma();
while (--fdc >= 0)
floppy_release_regions(fdc);
+ current_fdc = 0;
atomic_dec(&usage_count);
return -1;
}
static void floppy_release_irq_and_dma(void)
{
- int old_fdc;
+ int fdc;
#ifndef __sparc__
int drive;
#endif
@@ -4881,11 +4934,9 @@ static void floppy_release_irq_and_dma(void)
pr_info("auxiliary floppy timer still active\n");
if (work_pending(&floppy_work))
pr_info("work still pending\n");
- old_fdc = fdc;
for (fdc = 0; fdc < N_FDC; fdc++)
- if (FDCS->address != -1)
+ if (fdc_state[fdc].address != -1)
floppy_release_regions(fdc);
- fdc = old_fdc;
}
#ifdef MODULE
@@ -4919,33 +4970,29 @@ module_init(floppy_module_init);
static void __exit floppy_module_exit(void)
{
- int drive;
+ int drive, i;
- blk_unregister_region(MKDEV(FLOPPY_MAJOR, 0), 256);
unregister_blkdev(FLOPPY_MAJOR, "fd");
platform_driver_unregister(&floppy_driver);
destroy_workqueue(floppy_wq);
for (drive = 0; drive < N_DRIVE; drive++) {
- del_timer_sync(&motor_off_timer[drive]);
+ timer_delete_sync(&motor_off_timer[drive]);
if (floppy_available(drive)) {
- del_gendisk(disks[drive]);
- platform_device_unregister(&floppy_device[drive]);
+ for (i = 0; i < ARRAY_SIZE(floppy_type); i++) {
+ if (disks[drive][i])
+ del_gendisk(disks[drive][i]);
+ }
+ if (registered[drive])
+ platform_device_unregister(&floppy_device[drive]);
+ }
+ for (i = 0; i < ARRAY_SIZE(floppy_type); i++) {
+ if (disks[drive][i])
+ put_disk(disks[drive][i]);
}
- blk_cleanup_queue(disks[drive]->queue);
blk_mq_free_tag_set(&tag_sets[drive]);
-
- /*
- * These disks have not called add_disk(). Don't put down
- * queue reference in put_disk().
- */
- if (!(allowed_drive_mask & (1 << drive)) ||
- fdc_state[FDC(drive)].version == FDC_NONE)
- disks[drive]->queue = NULL;
-
- put_disk(disks[drive]);
}
cancel_delayed_work_sync(&fd_timeout);
@@ -4964,7 +5011,7 @@ module_param(floppy, charp, 0);
module_param(FLOPPY_IRQ, int, 0);
module_param(FLOPPY_DMA, int, 0);
MODULE_AUTHOR("Alain L. Knaff");
-MODULE_SUPPORTED_DEVICE("fd");
+MODULE_DESCRIPTION("Normal floppy disk support");
MODULE_LICENSE("GPL");
/* This doesn't actually get used other than for module information */
generated by cgit (git 2.34.1) at 2025-12-26 09:10:42 +0000