#include <linux/major.h>
#include <linux/errno.h>
#include <linux/genhd.h>
+#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/ide.h>
#include <asm/unaligned.h>
#include <linux/mtio.h>
-enum {
- /* output errors only */
- DBG_ERR = (1 << 0),
- /* output all sense key/asc */
- DBG_SENSE = (1 << 1),
- /* info regarding all chrdev-related procedures */
- DBG_CHRDEV = (1 << 2),
- /* all remaining procedures */
- DBG_PROCS = (1 << 3),
-};
-
/* define to see debug info */
-#define IDETAPE_DEBUG_LOG 0
+#undef IDETAPE_DEBUG_LOG
-#if IDETAPE_DEBUG_LOG
-#define debug_log(lvl, fmt, args...) \
-{ \
- if (tape->debug_mask & lvl) \
- printk(KERN_INFO "ide-tape: " fmt, ## args); \
-}
+#ifdef IDETAPE_DEBUG_LOG
+#define ide_debug_log(lvl, fmt, args...) __ide_debug_log(lvl, fmt, ## args)
#else
-#define debug_log(lvl, fmt, args...) do {} while (0)
+#define ide_debug_log(lvl, fmt, args...) do {} while (0)
#endif
/**************************** Tunable parameters *****************************/
* other device. Note that at most we will have only one DSC (usually
* data transfer) request in the device request queue.
*/
- struct request *postponed_rq;
+ bool postponed_rq;
+
/* The time in which we started polling for DSC */
unsigned long dsc_polling_start;
/* Timer used to poll for dsc */
char drv_write_prot;
/* the tape is write protected (hardware or opened as read-only) */
char write_prot;
-
- u32 debug_mask;
} idetape_tape_t;
static DEFINE_MUTEX(idetape_ref_mutex);
tape->asc = sense[12];
tape->ascq = sense[13];
- debug_log(DBG_ERR, "pc = %x, sense key = %x, asc = %x, ascq = %x\n",
- pc->c[0], tape->sense_key, tape->asc, tape->ascq);
+ ide_debug_log(IDE_DBG_FUNC,
+ "cmd: 0x%x, sense key = %x, asc = %x, ascq = %x",
+ rq->cmd[0], tape->sense_key, tape->asc, tape->ascq);
/* correct remaining bytes to transfer */
if (pc->flags & PC_FLAG_DMA_ERROR)
int uptodate = pc->error ? 0 : 1;
int err = uptodate ? 0 : IDE_DRV_ERROR_GENERAL;
- debug_log(DBG_PROCS, "Enter %s\n", __func__);
+ ide_debug_log(IDE_DBG_FUNC, "cmd: 0x%x, dsc: %d, err: %d", rq->cmd[0],
+ dsc, err);
if (dsc)
ide_tape_handle_dsc(drive);
* Postpone the current request so that ide.c will be able to service requests
* from another device on the same port while we are polling for DSC.
*/
-static void idetape_postpone_request(ide_drive_t *drive)
+static void ide_tape_stall_queue(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
- debug_log(DBG_PROCS, "Enter %s\n", __func__);
+ ide_debug_log(IDE_DBG_FUNC, "cmd: 0x%x, dsc_poll_freq: %lu",
+ drive->hwif->rq->cmd[0], tape->dsc_poll_freq);
- tape->postponed_rq = drive->hwif->rq;
+ tape->postponed_rq = true;
ide_stall_queue(drive, tape->dsc_poll_freq);
}
tape->dsc_poll_freq = IDETAPE_DSC_MA_FAST;
tape->dsc_timeout = jiffies + IDETAPE_DSC_MA_TIMEOUT;
/* Allow ide.c to handle other requests */
- idetape_postpone_request(drive);
+ ide_tape_stall_queue(drive);
}
/*
ide_complete_rq(drive, -EIO, blk_rq_bytes(rq));
return ide_stopped;
}
- debug_log(DBG_SENSE, "Retry #%d, cmd = %02X\n", pc->retries, pc->c[0]);
+ ide_debug_log(IDE_DBG_SENSE, "retry #%d, cmd: 0x%02x", pc->retries,
+ pc->c[0]);
pc->retries++;
ide_hwif_t *hwif = drive->hwif;
idetape_tape_t *tape = drive->driver_data;
struct ide_atapi_pc *pc = NULL;
- struct request *postponed_rq = tape->postponed_rq;
struct ide_cmd cmd;
u8 stat;
- debug_log(DBG_SENSE, "sector: %llu, nr_sectors: %u\n",
- (unsigned long long)blk_rq_pos(rq), blk_rq_sectors(rq));
+ ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, sector: %llu, nr_sectors: %u",
+ rq->cmd[0], (unsigned long long)blk_rq_pos(rq),
+ blk_rq_sectors(rq));
BUG_ON(!(blk_special_request(rq) || blk_sense_request(rq)));
goto out;
}
- if (postponed_rq != NULL)
- if (rq != postponed_rq) {
- printk(KERN_ERR "ide-tape: ide-tape.c bug - "
- "Two DSC requests were queued\n");
- drive->failed_pc = NULL;
- rq->errors = 0;
- ide_complete_rq(drive, 0, blk_rq_bytes(rq));
- return ide_stopped;
- }
-
- tape->postponed_rq = NULL;
-
/*
* If the tape is still busy, postpone our request and service
* the other device meanwhile.
if (!(drive->atapi_flags & IDE_AFLAG_IGNORE_DSC) &&
!(stat & ATA_DSC)) {
- if (postponed_rq == NULL) {
+ if (!tape->postponed_rq) {
tape->dsc_polling_start = jiffies;
tape->dsc_poll_freq = tape->best_dsc_rw_freq;
tape->dsc_timeout = jiffies + IDETAPE_DSC_RW_TIMEOUT;
tape->dsc_polling_start +
IDETAPE_DSC_MA_THRESHOLD))
tape->dsc_poll_freq = IDETAPE_DSC_MA_SLOW;
- idetape_postpone_request(drive);
+ ide_tape_stall_queue(drive);
return ide_stopped;
- } else
+ } else {
drive->atapi_flags &= ~IDE_AFLAG_IGNORE_DSC;
+ tape->postponed_rq = false;
+ }
if (rq->cmd[13] & REQ_IDETAPE_READ) {
pc = &tape->queued_pc;
struct ide_atapi_pc pc;
u8 buf[20];
- debug_log(DBG_PROCS, "Enter %s\n", __func__);
+ ide_debug_log(IDE_DBG_FUNC, "enter");
/* prep cmd */
ide_init_pc(&pc);
return -1;
if (!pc.error) {
- debug_log(DBG_SENSE, "BOP - %s\n",
+ ide_debug_log(IDE_DBG_FUNC, "BOP - %s",
(buf[0] & 0x80) ? "Yes" : "No");
- debug_log(DBG_SENSE, "EOP - %s\n",
+ ide_debug_log(IDE_DBG_FUNC, "EOP - %s",
(buf[0] & 0x40) ? "Yes" : "No");
if (buf[0] & 0x4) {
&drive->atapi_flags);
return -1;
} else {
- debug_log(DBG_SENSE, "Block Location - %u\n",
- be32_to_cpup((__be32 *)&buf[4]));
+ ide_debug_log(IDE_DBG_FUNC, "Block Location: %u",
+ be32_to_cpup((__be32 *)&buf[4]));
tape->partition = buf[1];
tape->first_frame = be32_to_cpup((__be32 *)&buf[4]);
struct request *rq;
int ret;
- debug_log(DBG_SENSE, "%s: cmd=%d\n", __func__, cmd);
+ ide_debug_log(IDE_DBG_FUNC, "cmd: 0x%x, size: %d", cmd, size);
+
BUG_ON(cmd != REQ_IDETAPE_READ && cmd != REQ_IDETAPE_WRITE);
BUG_ON(size < 0 || size % tape->blk_size);
struct ide_atapi_pc pc;
int ret;
- debug_log(DBG_SENSE, "Enter %s\n", __func__);
+ ide_debug_log(IDE_DBG_FUNC, "enter");
idetape_create_rewind_cmd(drive, &pc);
ret = ide_queue_pc_tail(drive, disk, &pc, NULL, 0);
int nr_stages;
} config;
- debug_log(DBG_PROCS, "Enter %s\n", __func__);
+ ide_debug_log(IDE_DBG_FUNC, "cmd: 0x%04x", cmd);
switch (cmd) {
case 0x0340:
int retval, count = 0;
int sprev = !!(tape->caps[4] & 0x20);
+
+ ide_debug_log(IDE_DBG_FUNC, "mt_op: %d, mt_count: %d", mt_op, mt_count);
+
if (mt_count == 0)
return 0;
if (MTBSF == mt_op || MTBSFM == mt_op) {
ssize_t ret = 0;
int rc;
- debug_log(DBG_CHRDEV, "Enter %s, count %Zd\n", __func__, count);
+ ide_debug_log(IDE_DBG_FUNC, "count %Zd", count);
if (tape->chrdev_dir != IDETAPE_DIR_READ) {
if (test_bit(ilog2(IDE_AFLAG_DETECT_BS), &drive->atapi_flags))
}
if (!done && test_bit(ilog2(IDE_AFLAG_FILEMARK), &drive->atapi_flags)) {
- debug_log(DBG_SENSE, "%s: spacing over filemark\n", tape->name);
-
idetape_space_over_filemarks(drive, MTFSF, 1);
return 0;
}
if (tape->write_prot)
return -EACCES;
- debug_log(DBG_CHRDEV, "Enter %s, count %Zd\n", __func__, count);
+ ide_debug_log(IDE_DBG_FUNC, "count %Zd", count);
/* Initialize write operation */
rc = idetape_init_rw(drive, IDETAPE_DIR_WRITE);
struct ide_atapi_pc pc;
int i, retval;
- debug_log(DBG_ERR, "Handling MTIOCTOP ioctl: mt_op=%d, mt_count=%d\n",
- mt_op, mt_count);
+ ide_debug_log(IDE_DBG_FUNC, "MTIOCTOP ioctl: mt_op: %d, mt_count: %d",
+ mt_op, mt_count);
switch (mt_op) {
case MTFSF:
int block_offset = 0, position = tape->first_frame;
void __user *argp = (void __user *)arg;
- debug_log(DBG_CHRDEV, "Enter %s, cmd=%u\n", __func__, cmd);
+ ide_debug_log(IDE_DBG_FUNC, "cmd: 0x%x", cmd);
if (tape->chrdev_dir == IDETAPE_DIR_WRITE) {
ide_tape_flush_merge_buffer(drive);
(buf[4 + 6] << 8) +
buf[4 + 7];
tape->drv_write_prot = (buf[2] & 0x80) >> 7;
+
+ ide_debug_log(IDE_DBG_FUNC, "blk_size: %d, write_prot: %d",
+ tape->blk_size, tape->drv_write_prot);
}
static int idetape_chrdev_open(struct inode *inode, struct file *filp)
return -ENXIO;
}
- debug_log(DBG_CHRDEV, "Enter %s\n", __func__);
+ drive = tape->drive;
+ filp->private_data = tape;
+
+ ide_debug_log(IDE_DBG_FUNC, "enter");
/*
* We really want to do nonseekable_open(inode, filp); here, but some
*/
filp->f_mode &= ~(FMODE_PREAD | FMODE_PWRITE);
- drive = tape->drive;
-
- filp->private_data = tape;
if (test_and_set_bit(ilog2(IDE_AFLAG_BUSY), &drive->atapi_flags)) {
retval = -EBUSY;
lock_kernel();
tape = drive->driver_data;
- debug_log(DBG_CHRDEV, "Enter %s\n", __func__);
+ ide_debug_log(IDE_DBG_FUNC, "enter");
if (tape->chrdev_dir == IDETAPE_DIR_WRITE)
idetape_write_release(drive, minor);
ide_devset_rw_flag(dsc_overlap, IDE_DFLAG_DSC_OVERLAP);
-ide_tape_devset_rw_field(debug_mask, debug_mask);
ide_tape_devset_rw_field(tdsc, best_dsc_rw_freq);
ide_tape_devset_r_field(avg_speed, avg_speed);
__IDE_PROC_DEVSET(avg_speed, 0, 0xffff, NULL, NULL),
__IDE_PROC_DEVSET(buffer, 0, 0xffff, NULL, divf_buffer),
__IDE_PROC_DEVSET(buffer_size, 0, 0xffff, NULL, divf_buffer_size),
- __IDE_PROC_DEVSET(debug_mask, 0, 0xffff, NULL, NULL),
__IDE_PROC_DEVSET(dsc_overlap, 0, 1, NULL, NULL),
__IDE_PROC_DEVSET(speed, 0, 0xffff, NULL, NULL),
__IDE_PROC_DEVSET(tdsc, IDETAPE_DSC_RW_MIN, IDETAPE_DSC_RW_MAX,
int buffer_size;
u16 *ctl = (u16 *)&tape->caps[12];
- drive->pc_callback = ide_tape_callback;
+ ide_debug_log(IDE_DBG_FUNC, "minor: %d", minor);
+
+ drive->pc_callback = ide_tape_callback;
drive->dev_flags |= IDE_DFLAG_DSC_OVERLAP;
}
#ifdef CONFIG_IDE_PROC_FS
-static int proc_idetape_read_name
- (char *page, char **start, off_t off, int count, int *eof, void *data)
+static int idetape_name_proc_show(struct seq_file *m, void *v)
{
- ide_drive_t *drive = (ide_drive_t *) data;
+ ide_drive_t *drive = (ide_drive_t *) m->private;
idetape_tape_t *tape = drive->driver_data;
- char *out = page;
- int len;
- len = sprintf(out, "%s\n", tape->name);
- PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
+ seq_printf(m, "%s\n", tape->name);
+ return 0;
+}
+
+static int idetape_name_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, idetape_name_proc_show, PDE(inode)->data);
}
+static const struct file_operations idetape_name_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = idetape_name_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
static ide_proc_entry_t idetape_proc[] = {
- { "capacity", S_IFREG|S_IRUGO, proc_ide_read_capacity, NULL },
- { "name", S_IFREG|S_IRUGO, proc_idetape_read_name, NULL },
- { NULL, 0, NULL, NULL }
+ { "capacity", S_IFREG|S_IRUGO, &ide_capacity_proc_fops },
+ { "name", S_IFREG|S_IRUGO, &idetape_name_proc_fops },
+ {}
};
static ide_proc_entry_t *ide_tape_proc_entries(ide_drive_t *drive)
return err;
}
-static struct block_device_operations idetape_block_ops = {
+static const struct block_device_operations idetape_block_ops = {
.owner = THIS_MODULE,
.open = idetape_open,
.release = idetape_release,
struct gendisk *g;
int minor;
- if (!strstr("ide-tape", drive->driver_req))
+ ide_debug_log(IDE_DBG_FUNC, "enter");
+
+ if (!strstr(DRV_NAME, drive->driver_req))
goto failed;
if (drive->media != ide_tape)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff