#include <linux/io.h>
#include <asm/unaligned.h>
+#include "ide-floppy.h"
+
/* define to see debug info */
#define IDEFLOPPY_DEBUG_LOG 0
#define CAPACITY_CURRENT 0x02
#define CAPACITY_NO_CARTRIDGE 0x03
-/*
- * Most of our global data which we need to save even as we leave the driver
- * due to an interrupt or a timer event is stored in a variable of type
- * idefloppy_floppy_t, defined below.
- */
-typedef struct ide_floppy_obj {
- ide_drive_t *drive;
- ide_driver_t *driver;
- struct gendisk *disk;
- struct kref kref;
- unsigned int openers; /* protected by BKL for now */
-
- /* Current packet command */
- struct ide_atapi_pc *pc;
- /* Last failed packet command */
- struct ide_atapi_pc *failed_pc;
- /* used for blk_{fs,pc}_request() requests */
- struct ide_atapi_pc queued_pc;
-
- struct ide_atapi_pc request_sense_pc;
- struct request request_sense_rq;
-
- /* Last error information */
- u8 sense_key, asc, ascq;
- /* delay this long before sending packet command */
- u8 ticks;
- int progress_indication;
-
- /* Device information */
- /* Current format */
- int blocks, block_size, bs_factor;
- /* Last format capacity descriptor */
- u8 cap_desc[8];
- /* Copy of the flexible disk page */
- u8 flexible_disk_page[32];
- /* Write protect */
- int wp;
- /* Supports format progress report */
- int srfp;
-} idefloppy_floppy_t;
-
#define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */
-/* IOCTLs used in low-level formatting. */
-#define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600
-#define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601
-#define IDEFLOPPY_IOCTL_FORMAT_START 0x4602
-#define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603
-
/* Error code returned in rq->errors to the higher part of the driver. */
#define IDEFLOPPY_ERROR_GENERAL 101
-/*
- * Pages of the SELECT SENSE / MODE SENSE packet commands.
- * See SFF-8070i spec.
- */
-#define IDEFLOPPY_CAPABILITIES_PAGE 0x1b
-#define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05
-
static DEFINE_MUTEX(idefloppy_ref_mutex);
#define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref)
idefloppy_end_request(drive, 1, 0);
}
-/*
- * Generate a new packet command request in front of the request queue, before
- * the current request so that it will be processed immediately, on the next
- * pass through the driver.
- */
-static void idefloppy_queue_pc_head(ide_drive_t *drive, struct ide_atapi_pc *pc,
- struct request *rq)
-{
- struct ide_floppy_obj *floppy = drive->driver_data;
-
- blk_rq_init(NULL, rq);
- rq->buffer = (char *) pc;
- rq->cmd_type = REQ_TYPE_SPECIAL;
- rq->cmd_flags |= REQ_PREEMPT;
- rq->rq_disk = floppy->disk;
- memcpy(rq->cmd, pc->c, 12);
- ide_do_drive_cmd(drive, rq);
-}
-
static void ide_floppy_callback(ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
idefloppy_end_request(drive, uptodate, 0);
}
-static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc *pc)
+void ide_floppy_create_request_sense_cmd(struct ide_atapi_pc *pc)
{
ide_init_pc(pc);
pc->c[0] = GPCMD_REQUEST_SENSE;
struct ide_atapi_pc *pc = &floppy->request_sense_pc;
(void)ide_read_error(drive);
- idefloppy_create_request_sense_cmd(pc);
- idefloppy_queue_pc_head(drive, pc, rq);
+ ide_floppy_create_request_sense_cmd(pc);
+ ide_queue_pc_head(drive, floppy->disk, pc, rq);
}
/* The usual interrupt handler called during a packet command. */
IDEFLOPPY_WAIT_CMD, NULL);
}
-static void idefloppy_create_prevent_cmd(struct ide_atapi_pc *pc, int prevent)
-{
- debug_log("creating prevent removal command, prevent = %d\n", prevent);
-
- ide_init_pc(pc);
- pc->c[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL;
- pc->c[4] = prevent;
-}
-
-static void idefloppy_create_read_capacity_cmd(struct ide_atapi_pc *pc)
+void ide_floppy_create_read_capacity_cmd(struct ide_atapi_pc *pc)
{
ide_init_pc(pc);
pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES;
pc->req_xfer = 255;
}
-static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc *pc, int b,
- int l, int flags)
-{
- ide_init_pc(pc);
- pc->c[0] = GPCMD_FORMAT_UNIT;
- pc->c[1] = 0x17;
-
- memset(pc->buf, 0, 12);
- pc->buf[1] = 0xA2;
- /* Default format list header, u8 1: FOV/DCRT/IMM bits set */
-
- if (flags & 1) /* Verify bit on... */
- pc->buf[1] ^= 0x20; /* ... turn off DCRT bit */
- pc->buf[3] = 8;
-
- put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buf[4]));
- put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buf[8]));
- pc->buf_size = 12;
- pc->flags |= PC_FLAG_WRITING;
-}
-
/* A mode sense command is used to "sense" floppy parameters. */
-static void idefloppy_create_mode_sense_cmd(struct ide_atapi_pc *pc,
- u8 page_code)
+void ide_floppy_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code)
{
u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
pc->req_xfer = length;
}
-static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc *pc, int start)
-{
- ide_init_pc(pc);
- pc->c[0] = GPCMD_START_STOP_UNIT;
- pc->c[4] = start;
-}
-
static void idefloppy_create_rw_cmd(idefloppy_floppy_t *floppy,
struct ide_atapi_pc *pc, struct request *rq,
unsigned long sector)
return idefloppy_issue_pc(drive, pc);
}
-/*
- * Add a special packet command request to the tail of the request queue,
- * and wait for it to be serviced.
- */
-static int idefloppy_queue_pc_tail(ide_drive_t *drive, struct ide_atapi_pc *pc)
-{
- struct ide_floppy_obj *floppy = drive->driver_data;
- struct request *rq;
- int error;
-
- rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
- rq->buffer = (char *) pc;
- rq->cmd_type = REQ_TYPE_SPECIAL;
- memcpy(rq->cmd, pc->c, 12);
- error = blk_execute_rq(drive->queue, floppy->disk, rq, 0);
- blk_put_request(rq);
-
- return error;
-}
-
/*
* Look at the flexible disk page parameters. We ignore the CHS capacity
* parameters and use the LBA parameters instead.
static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
+ struct gendisk *disk = floppy->disk;
struct ide_atapi_pc pc;
u8 *page;
int capacity, lba_capacity;
u16 transfer_rate, sector_size, cyls, rpm;
u8 heads, sectors;
- idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE);
+ ide_floppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE);
- if (idefloppy_queue_pc_tail(drive, &pc)) {
+ if (ide_queue_pc_tail(drive, disk, &pc)) {
printk(KERN_ERR "ide-floppy: Can't get flexible disk page"
" parameters\n");
return 1;
}
- floppy->wp = !!(pc.buf[3] & 0x80);
- set_disk_ro(floppy->disk, floppy->wp);
+
+ if (pc.buf[3] & 0x80)
+ drive->atapi_flags |= IDE_AFLAG_WP;
+ else
+ drive->atapi_flags &= ~IDE_AFLAG_WP;
+
+ set_disk_ro(disk, !!(drive->atapi_flags & IDE_AFLAG_WP));
+
page = &pc.buf[8];
transfer_rate = be16_to_cpup((__be16 *)&pc.buf[8 + 2]);
return 0;
}
-static int idefloppy_get_sfrp_bit(ide_drive_t *drive)
-{
- idefloppy_floppy_t *floppy = drive->driver_data;
- struct ide_atapi_pc pc;
-
- floppy->srfp = 0;
-
- idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE);
- pc.flags |= PC_FLAG_SUPPRESS_ERROR;
-
- if (idefloppy_queue_pc_tail(drive, &pc))
- return 1;
-
- floppy->srfp = pc.buf[8 + 2] & 0x40;
- return 0;
-}
-
/*
* Determine if a media is present in the floppy drive, and if so, its LBA
* capacity.
static int ide_floppy_get_capacity(ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
+ struct gendisk *disk = floppy->disk;
struct ide_atapi_pc pc;
u8 *cap_desc;
u8 header_len, desc_cnt;
floppy->bs_factor = 1;
set_capacity(floppy->disk, 0);
- idefloppy_create_read_capacity_cmd(&pc);
- if (idefloppy_queue_pc_tail(drive, &pc)) {
+ ide_floppy_create_read_capacity_cmd(&pc);
+ if (ide_queue_pc_tail(drive, disk, &pc)) {
printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
return 1;
}
if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
(void) ide_floppy_get_flexible_disk_page(drive);
- set_capacity(floppy->disk, floppy->blocks * floppy->bs_factor);
- return rc;
-}
-
-/*
- * Obtain the list of formattable capacities.
- * Very similar to ide_floppy_get_capacity, except that we push the capacity
- * descriptors to userland, instead of our own structures.
- *
- * Userland gives us the following structure:
- *
- * struct idefloppy_format_capacities {
- * int nformats;
- * struct {
- * int nblocks;
- * int blocksize;
- * } formats[];
- * };
- *
- * userland initializes nformats to the number of allocated formats[] records.
- * On exit we set nformats to the number of records we've actually initialized.
- */
-
-static int ide_floppy_get_format_capacities(ide_drive_t *drive, int __user *arg)
-{
- struct ide_atapi_pc pc;
- u8 header_len, desc_cnt;
- int i, blocks, length, u_array_size, u_index;
- int __user *argp;
-
- if (get_user(u_array_size, arg))
- return -EFAULT;
-
- if (u_array_size <= 0)
- return -EINVAL;
-
- idefloppy_create_read_capacity_cmd(&pc);
- if (idefloppy_queue_pc_tail(drive, &pc)) {
- printk(KERN_ERR "ide-floppy: Can't get floppy parameters\n");
- return -EIO;
- }
-
- header_len = pc.buf[3];
- desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
-
- u_index = 0;
- argp = arg + 1;
-
- /*
- * We always skip the first capacity descriptor. That's the current
- * capacity. We are interested in the remaining descriptors, the
- * formattable capacities.
- */
- for (i = 1; i < desc_cnt; i++) {
- unsigned int desc_start = 4 + i*8;
-
- if (u_index >= u_array_size)
- break; /* User-supplied buffer too small */
-
- blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]);
- length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]);
-
- if (put_user(blocks, argp))
- return -EFAULT;
-
- ++argp;
-
- if (put_user(length, argp))
- return -EFAULT;
-
- ++argp;
-
- ++u_index;
- }
-
- if (put_user(u_index, arg))
- return -EFAULT;
-
- return 0;
-}
-
-/*
- * Get ATAPI_FORMAT_UNIT progress indication.
- *
- * Userland gives a pointer to an int. The int is set to a progress
- * indicator 0-65536, with 65536=100%.
- *
- * If the drive does not support format progress indication, we just check
- * the dsc bit, and return either 0 or 65536.
- */
-
-static int ide_floppy_get_format_progress(ide_drive_t *drive, int __user *arg)
-{
- idefloppy_floppy_t *floppy = drive->driver_data;
- struct ide_atapi_pc pc;
- int progress_indication = 0x10000;
+ set_capacity(disk, floppy->blocks * floppy->bs_factor);
- if (floppy->srfp) {
- idefloppy_create_request_sense_cmd(&pc);
- if (idefloppy_queue_pc_tail(drive, &pc))
- return -EIO;
-
- if (floppy->sense_key == 2 &&
- floppy->asc == 4 &&
- floppy->ascq == 4)
- progress_indication = floppy->progress_indication;
-
- /* Else assume format_unit has finished, and we're at 0x10000 */
- } else {
- ide_hwif_t *hwif = drive->hwif;
- unsigned long flags;
- u8 stat;
-
- local_irq_save(flags);
- stat = hwif->tp_ops->read_status(hwif);
- local_irq_restore(flags);
-
- progress_indication = ((stat & ATA_DSC) == 0) ? 0 : 0x10000;
- }
-
- if (put_user(progress_indication, arg))
- return -EFAULT;
-
- return 0;
+ return rc;
}
static sector_t idefloppy_capacity(ide_drive_t *drive)
if (strncmp((char *)&id[ATA_ID_PROD], "IOMEGA Clik!", 11) == 0) {
blk_queue_max_sectors(drive->queue, 64);
drive->atapi_flags |= IDE_AFLAG_CLIK_DRIVE;
+ /* IOMEGA Clik! drives do not support lock/unlock commands */
+ drive->atapi_flags |= IDE_AFLAG_NO_DOORLOCK;
}
(void) ide_floppy_get_capacity(drive);
#endif
};
-static void ide_floppy_set_media_lock(ide_drive_t *drive, int on)
-{
- struct ide_atapi_pc pc;
-
- /* IOMEGA Clik! drives do not support lock/unlock commands */
- if ((drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE) == 0) {
- idefloppy_create_prevent_cmd(&pc, on);
- (void)idefloppy_queue_pc_tail(drive, &pc);
- }
-}
-
static int idefloppy_open(struct inode *inode, struct file *filp)
{
struct gendisk *disk = inode->i_bdev->bd_disk;
ide_init_pc(&pc);
pc.c[0] = GPCMD_TEST_UNIT_READY;
- if (idefloppy_queue_pc_tail(drive, &pc)) {
- idefloppy_create_start_stop_cmd(&pc, 1);
- (void) idefloppy_queue_pc_tail(drive, &pc);
- }
+ if (ide_queue_pc_tail(drive, disk, &pc))
+ ide_do_start_stop(drive, disk, 1);
if (ide_floppy_get_capacity(drive)
&& (filp->f_flags & O_NDELAY) == 0
goto out_put_floppy;
}
- if (floppy->wp && (filp->f_mode & 2)) {
+ if ((drive->atapi_flags & IDE_AFLAG_WP) && (filp->f_mode & 2)) {
ret = -EROFS;
goto out_put_floppy;
}
drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED;
- ide_floppy_set_media_lock(drive, 1);
+ ide_set_media_lock(drive, disk, 1);
check_disk_change(inode->i_bdev);
} else if (drive->atapi_flags & IDE_AFLAG_FORMAT_IN_PROGRESS) {
ret = -EBUSY;
debug_log("Reached %s\n", __func__);
if (floppy->openers == 1) {
- ide_floppy_set_media_lock(drive, 0);
+ ide_set_media_lock(drive, disk, 0);
drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS;
}
unsigned long arg, unsigned int cmd)
{
idefloppy_floppy_t *floppy = drive->driver_data;
+ struct gendisk *disk = floppy->disk;
int prevent = (arg && cmd != CDROMEJECT) ? 1 : 0;
if (floppy->openers > 1)
return -EBUSY;
- ide_floppy_set_media_lock(drive, prevent);
+ ide_set_media_lock(drive, disk, prevent);
- if (cmd == CDROMEJECT) {
- idefloppy_create_start_stop_cmd(pc, 2);
- (void) idefloppy_queue_pc_tail(floppy->drive, pc);
- }
+ if (cmd == CDROMEJECT)
+ ide_do_start_stop(drive, disk, 2);
return 0;
}
-static int ide_floppy_format_unit(ide_drive_t *drive, int __user *arg)
-{
- idefloppy_floppy_t *floppy = drive->driver_data;
- struct ide_atapi_pc pc;
- int blocks, length, flags, err = 0;
-
- if (floppy->openers > 1) {
- /* Don't format if someone is using the disk */
- drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS;
- return -EBUSY;
- }
-
- drive->atapi_flags |= IDE_AFLAG_FORMAT_IN_PROGRESS;
-
- /*
- * Send ATAPI_FORMAT_UNIT to the drive.
- *
- * Userland gives us the following structure:
- *
- * struct idefloppy_format_command {
- * int nblocks;
- * int blocksize;
- * int flags;
- * } ;
- *
- * flags is a bitmask, currently, the only defined flag is:
- *
- * 0x01 - verify media after format.
- */
- if (get_user(blocks, arg) ||
- get_user(length, arg+1) ||
- get_user(flags, arg+2)) {
- err = -EFAULT;
- goto out;
- }
-
- (void) idefloppy_get_sfrp_bit(drive);
- idefloppy_create_format_unit_cmd(&pc, blocks, length, flags);
-
- if (idefloppy_queue_pc_tail(drive, &pc))
- err = -EIO;
-
-out:
- if (err)
- drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS;
- return err;
-}
-
-static int ide_floppy_format_ioctl(ide_drive_t *drive, struct file *file,
- unsigned int cmd, void __user *argp)
-{
- switch (cmd) {
- case IDEFLOPPY_IOCTL_FORMAT_SUPPORTED:
- return 0;
- case IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY:
- return ide_floppy_get_format_capacities(drive, argp);
- case IDEFLOPPY_IOCTL_FORMAT_START:
- if (!(file->f_mode & 2))
- return -EPERM;
- return ide_floppy_format_unit(drive, (int __user *)argp);
- case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS:
- return ide_floppy_get_format_progress(drive, argp);
- default:
- return -ENOTTY;
- }
-}
-
static int idefloppy_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
}
MODULE_ALIAS("ide:*m-floppy*");
+MODULE_ALIAS("ide-floppy");
module_init(idefloppy_init);
module_exit(idefloppy_exit);
MODULE_LICENSE("GPL");
projects / linux-2.6-omap-h63xx.git / blobdiff