* Documentation/ide/ChangeLog.ide-floppy.1996-2002
*/
+#define DRV_NAME "ide-floppy"
+
#define IDEFLOPPY_VERSION "1.00"
#include <linux/module.h>
#include <linux/hdreg.h>
#include <linux/bitops.h>
#include <linux/mutex.h>
+#include <linux/scatterlist.h>
#include <scsi/scsi_ioctl.h>
*/
#define IDEFLOPPY_MAX_PC_RETRIES 3
-/*
- * With each packet command, we allocate a buffer of IDEFLOPPY_PC_BUFFER_SIZE
- * bytes.
- */
-#define IDEFLOPPY_PC_BUFFER_SIZE 256
-
-/*
- * In various places in the driver, we need to allocate storage for packet
- * commands and requests, which will remain valid while we leave the driver to
- * wait for an interrupt or a timeout event.
- */
-#define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES)
-
/* format capacities descriptor codes */
#define CAPACITY_INVALID 0x00
#define CAPACITY_UNFORMATTED 0x01
struct ide_atapi_pc *pc;
/* Last failed packet command */
struct ide_atapi_pc *failed_pc;
- /* Packet command stack */
- struct ide_atapi_pc pc_stack[IDEFLOPPY_PC_STACK];
- /* Next free packet command storage space */
- int pc_stack_index;
- struct request rq_stack[IDEFLOPPY_PC_STACK];
- /* We implement a circular array */
- int rq_stack_index;
+ /* 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;
#define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */
-/* Defines for the MODE SENSE command */
-#define MODE_SENSE_CURRENT 0x00
-#define MODE_SENSE_CHANGEABLE 0x01
-#define MODE_SENSE_DEFAULT 0x02
-#define MODE_SENSE_SAVED 0x03
-
/* IOCTLs used in low-level formatting. */
#define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600
#define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601
return 0;
}
-static void ide_floppy_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc,
- unsigned int bcount, int direction)
-{
- ide_hwif_t *hwif = drive->hwif;
- struct request *rq = pc->rq;
- struct req_iterator iter;
- struct bio_vec *bvec;
- unsigned long flags;
- int count, done = 0;
- char *data;
-
- rq_for_each_segment(bvec, rq, iter) {
- if (!bcount)
- break;
-
- count = min(bvec->bv_len, bcount);
-
- data = bvec_kmap_irq(bvec, &flags);
- if (direction)
- hwif->tp_ops->output_data(drive, NULL, data, count);
- else
- hwif->tp_ops->input_data(drive, NULL, data, count);
- bvec_kunmap_irq(data, &flags);
-
- bcount -= count;
- pc->b_count += count;
- done += count;
- }
-
- idefloppy_end_request(drive, 1, done >> 9);
-
- if (bcount) {
- printk(KERN_ERR "%s: leftover data in %s, bcount == %d\n",
- drive->name, __func__, bcount);
- ide_pad_transfer(drive, direction, bcount);
- }
-}
-
static void idefloppy_update_buffers(ide_drive_t *drive,
struct ide_atapi_pc *pc)
{
ide_do_drive_cmd(drive, rq);
}
-static struct ide_atapi_pc *idefloppy_next_pc_storage(ide_drive_t *drive)
-{
- idefloppy_floppy_t *floppy = drive->driver_data;
-
- if (floppy->pc_stack_index == IDEFLOPPY_PC_STACK)
- floppy->pc_stack_index = 0;
- return (&floppy->pc_stack[floppy->pc_stack_index++]);
-}
-
-static struct request *idefloppy_next_rq_storage(ide_drive_t *drive)
-{
- idefloppy_floppy_t *floppy = drive->driver_data;
-
- if (floppy->rq_stack_index == IDEFLOPPY_PC_STACK)
- floppy->rq_stack_index = 0;
- return (&floppy->rq_stack[floppy->rq_stack_index++]);
-}
-
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_init_pc(struct ide_atapi_pc *pc)
-{
- memset(pc, 0, sizeof(*pc));
- pc->buf = pc->pc_buf;
- pc->buf_size = IDEFLOPPY_PC_BUFFER_SIZE;
-}
-
static void idefloppy_create_request_sense_cmd(struct ide_atapi_pc *pc)
{
- idefloppy_init_pc(pc);
+ ide_init_pc(pc);
pc->c[0] = GPCMD_REQUEST_SENSE;
pc->c[4] = 255;
pc->req_xfer = 18;
*/
static void idefloppy_retry_pc(ide_drive_t *drive)
{
- struct ide_atapi_pc *pc;
- struct request *rq;
+ struct ide_floppy_obj *floppy = drive->driver_data;
+ struct request *rq = &floppy->request_sense_rq;
+ struct ide_atapi_pc *pc = &floppy->request_sense_pc;
(void)ide_read_error(drive);
- pc = idefloppy_next_pc_storage(drive);
- rq = idefloppy_next_rq_storage(drive);
idefloppy_create_request_sense_cmd(pc);
idefloppy_queue_pc_head(drive, pc, rq);
}
return ide_pc_intr(drive, floppy->pc, idefloppy_pc_intr,
IDEFLOPPY_WAIT_CMD, NULL, idefloppy_update_buffers,
- idefloppy_retry_pc, NULL, ide_floppy_io_buffers);
+ idefloppy_retry_pc, NULL, ide_io_buffers);
}
/*
{
debug_log("creating prevent removal command, prevent = %d\n", prevent);
- idefloppy_init_pc(pc);
+ 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)
{
- idefloppy_init_pc(pc);
+ ide_init_pc(pc);
pc->c[0] = GPCMD_READ_FORMAT_CAPACITIES;
pc->c[7] = 255;
pc->c[8] = 255;
static void idefloppy_create_format_unit_cmd(struct ide_atapi_pc *pc, int b,
int l, int flags)
{
- idefloppy_init_pc(pc);
+ ide_init_pc(pc);
pc->c[0] = GPCMD_FORMAT_UNIT;
pc->c[1] = 0x17;
/* 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, u8 type)
+ u8 page_code)
{
u16 length = 8; /* sizeof(Mode Parameter Header) = 8 Bytes */
- idefloppy_init_pc(pc);
+ ide_init_pc(pc);
pc->c[0] = GPCMD_MODE_SENSE_10;
pc->c[1] = 0;
- pc->c[2] = page_code + (type << 6);
+ pc->c[2] = page_code;
switch (page_code) {
case IDEFLOPPY_CAPABILITIES_PAGE:
static void idefloppy_create_start_stop_cmd(struct ide_atapi_pc *pc, int start)
{
- idefloppy_init_pc(pc);
+ ide_init_pc(pc);
pc->c[0] = GPCMD_START_STOP_UNIT;
pc->c[4] = start;
}
debug_log("create_rw10_cmd: block == %d, blocks == %d\n",
block, blocks);
- idefloppy_init_pc(pc);
+ ide_init_pc(pc);
pc->c[0] = cmd == READ ? GPCMD_READ_10 : GPCMD_WRITE_10;
put_unaligned(cpu_to_be16(blocks), (unsigned short *)&pc->c[7]);
put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[2]);
memcpy(rq->cmd, pc->c, 12);
pc->rq = rq;
- pc->b_count = cmd == READ ? 0 : rq->bio->bi_size;
+ pc->b_count = 0;
if (rq->cmd_flags & REQ_RW)
pc->flags |= PC_FLAG_WRITING;
pc->buf = NULL;
static void idefloppy_blockpc_cmd(idefloppy_floppy_t *floppy,
struct ide_atapi_pc *pc, struct request *rq)
{
- idefloppy_init_pc(pc);
+ ide_init_pc(pc);
memcpy(pc->c, rq->cmd, sizeof(pc->c));
pc->rq = rq;
- pc->b_count = rq->data_len;
+ pc->b_count = 0;
if (rq->data_len && rq_data_dir(rq) == WRITE)
pc->flags |= PC_FLAG_WRITING;
pc->buf = rq->data;
struct request *rq, sector_t block_s)
{
idefloppy_floppy_t *floppy = drive->driver_data;
+ ide_hwif_t *hwif = drive->hwif;
struct ide_atapi_pc *pc;
unsigned long block = (unsigned long)block_s;
- debug_log("dev: %s, cmd_type: %x, errors: %d\n",
- rq->rq_disk ? rq->rq_disk->disk_name : "?",
- rq->cmd_type, rq->errors);
- debug_log("sector: %ld, nr_sectors: %ld, "
- "current_nr_sectors: %d\n", (long)rq->sector,
- rq->nr_sectors, rq->current_nr_sectors);
+ debug_log("%s: dev: %s, cmd: 0x%x, cmd_type: %x, errors: %d\n",
+ __func__, rq->rq_disk ? rq->rq_disk->disk_name : "?",
+ rq->cmd[0], rq->cmd_type, rq->errors);
+
+ debug_log("%s: sector: %ld, nr_sectors: %ld, current_nr_sectors: %d\n",
+ __func__, (long)rq->sector, rq->nr_sectors,
+ rq->current_nr_sectors);
if (rq->errors >= ERROR_MAX) {
if (floppy->failed_pc)
idefloppy_end_request(drive, 0, 0);
return ide_stopped;
}
- pc = idefloppy_next_pc_storage(drive);
+ pc = &floppy->queued_pc;
idefloppy_create_rw_cmd(floppy, pc, rq, block);
} else if (blk_special_request(rq)) {
pc = (struct ide_atapi_pc *) rq->buffer;
} else if (blk_pc_request(rq)) {
- pc = idefloppy_next_pc_storage(drive);
+ pc = &floppy->queued_pc;
idefloppy_blockpc_cmd(floppy, pc, rq);
} else {
blk_dump_rq_flags(rq,
return ide_stopped;
}
+ ide_init_sg_cmd(drive, rq);
+ ide_map_sg(drive, rq);
+
+ pc->sg = hwif->sg_table;
+ pc->sg_cnt = hwif->sg_nents;
+
pc->rq = rq;
return idefloppy_issue_pc(drive, pc);
u16 transfer_rate, sector_size, cyls, rpm;
u8 heads, sectors;
- idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE,
- MODE_SENSE_CURRENT);
+ idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE);
if (idefloppy_queue_pc_tail(drive, &pc)) {
printk(KERN_ERR "ide-floppy: Can't get flexible disk page"
struct ide_atapi_pc pc;
floppy->srfp = 0;
- idefloppy_create_mode_sense_cmd(&pc, IDEFLOPPY_CAPABILITIES_PAGE,
- MODE_SENSE_CURRENT);
+ 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);
+ return 0;
}
/*
int __user *argp;
if (get_user(u_array_size, arg))
- return (-EFAULT);
+ return -EFAULT;
if (u_array_size <= 0)
- return (-EINVAL);
+ 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);
+ return -EIO;
}
+
header_len = pc.buf[3];
desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]);
if (put_user(blocks, argp))
- return(-EFAULT);
+ return -EFAULT;
+
++argp;
if (put_user(length, argp))
- return (-EFAULT);
+ return -EFAULT;
+
++argp;
++u_index;
}
if (put_user(u_index, arg))
- return (-EFAULT);
- return (0);
+ return -EFAULT;
+
+ return 0;
}
/*
* the dsc bit, and return either 0 or 65536.
*/
-static int idefloppy_get_format_progress(ide_drive_t *drive, int __user *arg)
+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;
if (floppy->srfp) {
idefloppy_create_request_sense_cmd(&pc);
if (idefloppy_queue_pc_tail(drive, &pc))
- return (-EIO);
+ return -EIO;
if (floppy->sense_key == 2 &&
floppy->asc == 4 &&
progress_indication = ((stat & ATA_DSC) == 0) ? 0 : 0x10000;
}
+
if (put_user(progress_indication, arg))
- return (-EFAULT);
+ return -EFAULT;
- return (0);
+ return 0;
}
static sector_t idefloppy_capacity(ide_drive_t *drive)
return capacity;
}
-/*
- * Check whether we can support a drive, based on the ATAPI IDENTIFY command
- * results.
- */
-static int idefloppy_identify_device(ide_drive_t *drive, u16 *id)
-{
- u8 gcw[2];
- u8 device_type, protocol, removable, drq_type, packet_size;
-
- *((u16 *)&gcw) = id[ATA_ID_CONFIG];
-
- device_type = gcw[1] & 0x1F;
- removable = (gcw[0] & 0x80) >> 7;
- protocol = (gcw[1] & 0xC0) >> 6;
- drq_type = (gcw[0] & 0x60) >> 5;
- packet_size = gcw[0] & 0x03;
-
-#ifdef CONFIG_PPC
- /* kludge for Apple PowerBook internal zip */
- if (device_type == 5 &&
- !strstr((char *)&id[ATA_ID_PROD], "CD-ROM") &&
- strstr((char *)&id[ATA_ID_PROD], "ZIP"))
- device_type = 0;
-#endif
-
- if (protocol != 2)
- printk(KERN_ERR "ide-floppy: Protocol (0x%02x) is not ATAPI\n",
- protocol);
- else if (device_type != 0)
- printk(KERN_ERR "ide-floppy: Device type (0x%02x) is not set "
- "to floppy\n", device_type);
- else if (!removable)
- printk(KERN_ERR "ide-floppy: The removable flag is not set\n");
- else if (drq_type == 3)
- printk(KERN_ERR "ide-floppy: Sorry, DRQ type (0x%02x) not "
- "supported\n", drq_type);
- else if (packet_size != 0)
- printk(KERN_ERR "ide-floppy: Packet size (0x%02x) is not 12 "
- "bytes\n", packet_size);
- else
- return 1;
- return 0;
-}
-
#ifdef CONFIG_IDE_PROC_FS
ide_devset_rw(bios_cyl, 0, 1023, bios_cyl);
ide_devset_rw(bios_head, 0, 255, bios_head);
u8 gcw[2];
*((u16 *)&gcw) = id[ATA_ID_CONFIG];
- floppy->pc = floppy->pc_stack;
+
drive->pc_callback = ide_floppy_callback;
if (((gcw[0] & 0x60) >> 5) == 1)
.remove = ide_floppy_remove,
.version = IDEFLOPPY_VERSION,
.media = ide_floppy,
- .supports_dsc_overlap = 0,
.do_request = idefloppy_do_request,
.end_request = idefloppy_end_request,
.error = __ide_error,
#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;
drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS;
/* Just in case */
- idefloppy_init_pc(&pc);
+ ide_init_pc(&pc);
pc.c[0] = GPCMD_TEST_UNIT_READY;
if (idefloppy_queue_pc_tail(drive, &pc)) {
ret = -EROFS;
goto out_put_floppy;
}
+
drive->atapi_flags |= IDE_AFLAG_MEDIA_CHANGED;
- /* IOMEGA Clik! drives do not support lock/unlock commands */
- if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) {
- idefloppy_create_prevent_cmd(&pc, 1);
- (void) idefloppy_queue_pc_tail(drive, &pc);
- }
+ ide_floppy_set_media_lock(drive, 1);
check_disk_change(inode->i_bdev);
} else if (drive->atapi_flags & IDE_AFLAG_FORMAT_IN_PROGRESS) {
ret = -EBUSY;
struct gendisk *disk = inode->i_bdev->bd_disk;
struct ide_floppy_obj *floppy = ide_floppy_g(disk);
ide_drive_t *drive = floppy->drive;
- struct ide_atapi_pc pc;
debug_log("Reached %s\n", __func__);
if (floppy->openers == 1) {
- /* IOMEGA Clik! drives do not support lock/unlock commands */
- if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) {
- idefloppy_create_prevent_cmd(&pc, 0);
- (void) idefloppy_queue_pc_tail(drive, &pc);
- }
-
+ ide_floppy_set_media_lock(drive, 0);
drive->atapi_flags &= ~IDE_AFLAG_FORMAT_IN_PROGRESS;
}
unsigned long arg, unsigned int cmd)
{
idefloppy_floppy_t *floppy = drive->driver_data;
+ int prevent = (arg && cmd != CDROMEJECT) ? 1 : 0;
if (floppy->openers > 1)
return -EBUSY;
- /* The IOMEGA Clik! Drive doesn't support this command -
- * no room for an eject mechanism */
- if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE)) {
- int prevent = arg ? 1 : 0;
-
- if (cmd == CDROMEJECT)
- prevent = 0;
-
- idefloppy_create_prevent_cmd(pc, prevent);
- (void) idefloppy_queue_pc_tail(floppy->drive, pc);
- }
+ ide_floppy_set_media_lock(drive, prevent);
if (cmd == CDROMEJECT) {
idefloppy_create_start_stop_cmd(pc, 2);
return 0;
}
-static int ide_floppy_format_unit(idefloppy_floppy_t *floppy,
- int __user *arg)
+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;
- ide_drive_t *drive = floppy->drive;
int blocks, length, flags, err = 0;
if (floppy->openers > 1) {
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)
void __user *argp = (void __user *)arg;
int err;
- switch (cmd) {
- case CDROMEJECT:
- /* fall through */
- case CDROM_LOCKDOOR:
+ if (cmd == CDROMEJECT || cmd == CDROM_LOCKDOOR)
return ide_floppy_lockdoor(drive, &pc, arg, 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(floppy, (int __user *)arg);
- case IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS:
- return idefloppy_get_format_progress(drive, argp);
- }
+ err = ide_floppy_format_ioctl(drive, file, cmd, argp);
+ if (err != -ENOTTY)
+ return err;
/*
* skip SCSI_IOCTL_SEND_COMMAND (deprecated)
if (cmd != CDROM_SEND_PACKET && cmd != SCSI_IOCTL_SEND_COMMAND)
err = scsi_cmd_ioctl(file, bdev->bd_disk->queue,
bdev->bd_disk, cmd, argp);
- else
- err = -ENOTTY;
if (err == -ENOTTY)
err = generic_ide_ioctl(drive, file, bdev, cmd, arg);
if (drive->media != ide_floppy)
goto failed;
- if (!idefloppy_identify_device(drive, drive->id)) {
+ if (!ide_check_atapi_device(drive, DRV_NAME)) {
printk(KERN_ERR "ide-floppy: %s: not supported by this version"
" of ide-floppy\n", drive->name);
goto failed;
projects / linux-2.6-omap-h63xx.git / blobdiff