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drivers/ide/ide-tape.c
55.1 KB
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/* |
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* IDE ATAPI streaming tape driver. * |
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* Copyright (C) 1995-1999 Gadi Oxman <gadio@netvision.net.il> * Copyright (C) 2003-2005 Bartlomiej Zolnierkiewicz |
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* |
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* This driver was constructed as a student project in the software laboratory * of the faculty of electrical engineering in the Technion - Israel's * Institute Of Technology, with the guide of Avner Lottem and Dr. Ilana David. * * It is hereby placed under the terms of the GNU general public license. * (See linux/COPYING). |
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* |
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* For a historical changelog see * Documentation/ide/ChangeLog.ide-tape.1995-2002 |
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*/ |
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#define DRV_NAME "ide-tape" |
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#define IDETAPE_VERSION "1.20" |
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|
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#include <linux/module.h> #include <linux/types.h> #include <linux/string.h> #include <linux/kernel.h> #include <linux/delay.h> #include <linux/timer.h> #include <linux/mm.h> #include <linux/interrupt.h> |
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#include <linux/jiffies.h> |
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#include <linux/major.h> |
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#include <linux/errno.h> #include <linux/genhd.h> |
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#include <linux/seq_file.h> |
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#include <linux/slab.h> #include <linux/pci.h> #include <linux/ide.h> |
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#include <linux/completion.h> #include <linux/bitops.h> |
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#include <linux/mutex.h> |
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#include <scsi/scsi.h> |
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#include <asm/byteorder.h> |
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#include <linux/uaccess.h> #include <linux/io.h> |
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#include <asm/unaligned.h> |
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#include <linux/mtio.h> |
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/* define to see debug info */ |
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#undef IDETAPE_DEBUG_LOG |
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|
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#ifdef IDETAPE_DEBUG_LOG #define ide_debug_log(lvl, fmt, args...) __ide_debug_log(lvl, fmt, ## args) |
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#else |
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#define ide_debug_log(lvl, fmt, args...) do {} while (0) |
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#endif |
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/**************************** Tunable parameters *****************************/ |
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/* |
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* After each failed packet command we issue a request sense command and retry * the packet command IDETAPE_MAX_PC_RETRIES times. |
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* |
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* Setting IDETAPE_MAX_PC_RETRIES to 0 will disable retries. |
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*/ #define IDETAPE_MAX_PC_RETRIES 3 /* |
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* The following parameter is used to select the point in the internal tape fifo * in which we will start to refill the buffer. Decreasing the following * parameter will improve the system's latency and interactive response, while * using a high value might improve system throughput. |
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*/ |
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#define IDETAPE_FIFO_THRESHOLD 2 |
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/* |
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* DSC polling parameters. |
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* |
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* Polling for DSC (a single bit in the status register) is a very important * function in ide-tape. There are two cases in which we poll for DSC: |
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* |
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* 1. Before a read/write packet command, to ensure that we can transfer data * from/to the tape's data buffers, without causing an actual media access. * In case the tape is not ready yet, we take out our request from the device * request queue, so that ide.c could service requests from the other device * on the same interface in the meantime. |
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* |
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* 2. After the successful initialization of a "media access packet command", * which is a command that can take a long time to complete (the interval can * range from several seconds to even an hour). Again, we postpone our request * in the middle to free the bus for the other device. The polling frequency * here should be lower than the read/write frequency since those media access * commands are slow. We start from a "fast" frequency - IDETAPE_DSC_MA_FAST * (1 second), and if we don't receive DSC after IDETAPE_DSC_MA_THRESHOLD * (5 min), we switch it to a lower frequency - IDETAPE_DSC_MA_SLOW (1 min). |
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* |
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* We also set a timeout for the timer, in case something goes wrong. The * timeout should be longer then the maximum execution time of a tape operation. |
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*/ |
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/* DSC timings. */ |
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#define IDETAPE_DSC_RW_MIN 5*HZ/100 /* 50 msec */ #define IDETAPE_DSC_RW_MAX 40*HZ/100 /* 400 msec */ #define IDETAPE_DSC_RW_TIMEOUT 2*60*HZ /* 2 minutes */ #define IDETAPE_DSC_MA_FAST 2*HZ /* 2 seconds */ #define IDETAPE_DSC_MA_THRESHOLD 5*60*HZ /* 5 minutes */ #define IDETAPE_DSC_MA_SLOW 30*HZ /* 30 seconds */ #define IDETAPE_DSC_MA_TIMEOUT 2*60*60*HZ /* 2 hours */ /*************************** End of tunable parameters ***********************/ |
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/* tape directions */ enum { IDETAPE_DIR_NONE = (1 << 0), IDETAPE_DIR_READ = (1 << 1), IDETAPE_DIR_WRITE = (1 << 2), }; |
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|
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/* Tape door status */ #define DOOR_UNLOCKED 0 #define DOOR_LOCKED 1 #define DOOR_EXPLICITLY_LOCKED 2 /* Some defines for the SPACE command */ #define IDETAPE_SPACE_OVER_FILEMARK 1 #define IDETAPE_SPACE_TO_EOD 3 /* Some defines for the LOAD UNLOAD command */ #define IDETAPE_LU_LOAD_MASK 1 #define IDETAPE_LU_RETENSION_MASK 2 #define IDETAPE_LU_EOT_MASK 4 |
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/* Structures related to the SELECT SENSE / MODE SENSE packet commands. */ #define IDETAPE_BLOCK_DESCRIPTOR 0 #define IDETAPE_CAPABILITIES_PAGE 0x2a |
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/* |
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* 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 the struct defined below. |
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*/ typedef struct ide_tape_obj { |
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ide_drive_t *drive; struct ide_driver *driver; struct gendisk *disk; |
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struct device dev; |
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|
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/* used by REQ_IDETAPE_{READ,WRITE} requests */ struct ide_atapi_pc queued_pc; |
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|
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/* |
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* DSC polling variables. |
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* |
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* While polling for DSC we use postponed_rq to postpone the current * request so that ide.c will be able to service pending requests on the * other device. Note that at most we will have only one DSC (usually |
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* data transfer) request in the device request queue. |
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*/ |
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bool postponed_rq; |
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/* The time in which we started polling for DSC */ unsigned long dsc_polling_start; /* Timer used to poll for dsc */ struct timer_list dsc_timer; /* Read/Write dsc polling frequency */ |
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unsigned long best_dsc_rw_freq; unsigned long dsc_poll_freq; |
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unsigned long dsc_timeout; |
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/* Read position information */ |
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u8 partition; /* Current block */ |
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unsigned int first_frame; |
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|
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/* Last error information */ |
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u8 sense_key, asc, ascq; |
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/* Character device operation */ |
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unsigned int minor; /* device name */ char name[4]; /* Current character device data transfer direction */ |
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u8 chrdev_dir; |
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|
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/* tape block size, usually 512 or 1024 bytes */ unsigned short blk_size; |
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int user_bs_factor; |
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|
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/* Copy of the tape's Capabilities and Mechanical Page */ |
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u8 caps[20]; |
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/* |
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* Active data transfer request parameters. |
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* |
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* At most, there is only one ide-tape originated data transfer request * in the device request queue. This allows ide.c to easily service * requests from the other device when we postpone our active request. |
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*/ |
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|
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/* Data buffer size chosen based on the tape's recommendation */ |
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int buffer_size; |
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/* Staging buffer of buffer_size bytes */ void *buf; /* The read/write cursor */ void *cur; /* The number of valid bytes in buf */ size_t valid; |
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/* Measures average tape speed */ |
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unsigned long avg_time; int avg_size; int avg_speed; |
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/* the door is currently locked */ int door_locked; /* the tape hardware is write protected */ char drv_write_prot; /* the tape is write protected (hardware or opened as read-only) */ char write_prot; |
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} idetape_tape_t; |
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static DEFINE_MUTEX(ide_tape_mutex); |
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static DEFINE_MUTEX(idetape_ref_mutex); |
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|
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static DEFINE_MUTEX(idetape_chrdev_mutex); |
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static struct class *idetape_sysfs_class; |
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static void ide_tape_release(struct device *); |
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|
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static struct ide_tape_obj *idetape_devs[MAX_HWIFS * MAX_DRIVES]; static struct ide_tape_obj *ide_tape_get(struct gendisk *disk, bool cdev, unsigned int i) |
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{ struct ide_tape_obj *tape = NULL; |
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mutex_lock(&idetape_ref_mutex); |
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if (cdev) tape = idetape_devs[i]; else tape = ide_drv_g(disk, ide_tape_obj); |
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if (tape) { |
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if (ide_device_get(tape->drive)) |
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tape = NULL; |
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else |
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get_device(&tape->dev); |
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} |
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|
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mutex_unlock(&idetape_ref_mutex); |
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return tape; } |
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static void ide_tape_put(struct ide_tape_obj *tape) { |
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ide_drive_t *drive = tape->drive; |
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mutex_lock(&idetape_ref_mutex); |
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put_device(&tape->dev); |
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ide_device_put(drive); |
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mutex_unlock(&idetape_ref_mutex); |
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} |
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/* |
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* called on each failed packet command retry to analyze the request sense. We * currently do not utilize this information. |
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*/ |
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static void idetape_analyze_error(ide_drive_t *drive) |
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{ idetape_tape_t *tape = drive->driver_data; |
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struct ide_atapi_pc *pc = drive->failed_pc; |
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struct request *rq = drive->hwif->rq; |
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u8 *sense = bio_data(rq->bio); |
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|
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tape->sense_key = sense[2] & 0xF; tape->asc = sense[12]; tape->ascq = sense[13]; |
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|
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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); |
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|
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/* correct remaining bytes to transfer */ |
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if (pc->flags & PC_FLAG_DMA_ERROR) |
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rq->resid_len = tape->blk_size * get_unaligned_be32(&sense[3]); |
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/* * If error was the result of a zero-length read or write command, * with sense key=5, asc=0x22, ascq=0, let it slide. Some drives * (i.e. Seagate STT3401A Travan) don't support 0-length read/writes. */ |
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if ((pc->c[0] == READ_6 || pc->c[0] == WRITE_6) |
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/* length == 0 */ && pc->c[4] == 0 && pc->c[3] == 0 && pc->c[2] == 0) { if (tape->sense_key == 5) { |
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/* don't report an error, everything's ok */ pc->error = 0; /* don't retry read/write */ |
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pc->flags |= PC_FLAG_ABORT; |
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} } |
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if (pc->c[0] == READ_6 && (sense[2] & 0x80)) { |
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pc->error = IDE_DRV_ERROR_FILEMARK; |
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pc->flags |= PC_FLAG_ABORT; |
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} |
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if (pc->c[0] == WRITE_6) { |
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if ((sense[2] & 0x40) || (tape->sense_key == 0xd && tape->asc == 0x0 && tape->ascq == 0x2)) { |
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pc->error = IDE_DRV_ERROR_EOD; |
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pc->flags |= PC_FLAG_ABORT; |
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} } |
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if (pc->c[0] == READ_6 || pc->c[0] == WRITE_6) { |
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if (tape->sense_key == 8) { |
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pc->error = IDE_DRV_ERROR_EOD; |
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pc->flags |= PC_FLAG_ABORT; |
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} |
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if (!(pc->flags & PC_FLAG_ABORT) && |
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(blk_rq_bytes(rq) - rq->resid_len)) |
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pc->retries = IDETAPE_MAX_PC_RETRIES + 1; } } |
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static void ide_tape_handle_dsc(ide_drive_t *); |
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static int ide_tape_callback(ide_drive_t *drive, int dsc) |
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{ idetape_tape_t *tape = drive->driver_data; |
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struct ide_atapi_pc *pc = drive->pc; |
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struct request *rq = drive->hwif->rq; |
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int uptodate = pc->error ? 0 : 1; |
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int err = uptodate ? 0 : IDE_DRV_ERROR_GENERAL; |
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|
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ide_debug_log(IDE_DBG_FUNC, "cmd: 0x%x, dsc: %d, err: %d", rq->cmd[0], dsc, err); |
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|
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if (dsc) ide_tape_handle_dsc(drive); |
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if (drive->failed_pc == pc) drive->failed_pc = NULL; |
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if (pc->c[0] == REQUEST_SENSE) { if (uptodate) |
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idetape_analyze_error(drive); |
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else printk(KERN_ERR "ide-tape: Error in REQUEST SENSE " "itself - Aborting request! "); } else if (pc->c[0] == READ_6 || pc->c[0] == WRITE_6) { |
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unsigned int blocks = (blk_rq_bytes(rq) - rq->resid_len) / tape->blk_size; |
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tape->avg_size += blocks * tape->blk_size; if (time_after_eq(jiffies, tape->avg_time + HZ)) { tape->avg_speed = tape->avg_size * HZ / (jiffies - tape->avg_time) / 1024; tape->avg_size = 0; tape->avg_time = jiffies; } tape->first_frame += blocks; |
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|
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if (pc->error) { uptodate = 0; err = pc->error; } |
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} |
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rq->errors = err; |
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return uptodate; |
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350 |
} |
1da177e4c Linux-2.6.12-rc2 |
351 |
/* |
3c98bf347 ide-tape: cleanup... |
352 |
* Postpone the current request so that ide.c will be able to service requests |
b65fac32c ide: merge ide_hw... |
353 |
* from another device on the same port while we are polling for DSC. |
1da177e4c Linux-2.6.12-rc2 |
354 |
*/ |
6f3848ac2 ide-tape: fix han... |
355 |
static void ide_tape_stall_queue(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
356 357 |
{ idetape_tape_t *tape = drive->driver_data; |
e972d7027 ide-tape: convert... |
358 |
ide_debug_log(IDE_DBG_FUNC, "cmd: 0x%x, dsc_poll_freq: %lu", |
6f3848ac2 ide-tape: fix han... |
359 |
drive->hwif->rq->cmd[0], tape->dsc_poll_freq); |
8004a8c97 ide-tape: refacto... |
360 |
|
6f3848ac2 ide-tape: fix han... |
361 |
tape->postponed_rq = true; |
b65fac32c ide: merge ide_hw... |
362 |
|
54bb2074c ide-tape: struct ... |
363 |
ide_stall_queue(drive, tape->dsc_poll_freq); |
1da177e4c Linux-2.6.12-rc2 |
364 |
} |
74e63e74e ide-tape: factor ... |
365 366 367 368 369 370 371 372 373 |
static void ide_tape_handle_dsc(ide_drive_t *drive) { idetape_tape_t *tape = drive->driver_data; /* Media access command */ tape->dsc_polling_start = jiffies; tape->dsc_poll_freq = IDETAPE_DSC_MA_FAST; tape->dsc_timeout = jiffies + IDETAPE_DSC_MA_TIMEOUT; /* Allow ide.c to handle other requests */ |
6f3848ac2 ide-tape: fix han... |
374 |
ide_tape_stall_queue(drive); |
74e63e74e ide-tape: factor ... |
375 |
} |
1da177e4c Linux-2.6.12-rc2 |
376 |
/* |
3c98bf347 ide-tape: cleanup... |
377 |
* Packet Command Interface |
1da177e4c Linux-2.6.12-rc2 |
378 |
* |
2b9efba48 ide: add pointer ... |
379 |
* The current Packet Command is available in drive->pc, and will not change |
3c98bf347 ide-tape: cleanup... |
380 381 |
* until we finish handling it. Each packet command is associated with a * callback function that will be called when the command is finished. |
1da177e4c Linux-2.6.12-rc2 |
382 |
* |
3c98bf347 ide-tape: cleanup... |
383 |
* The handling will be done in three stages: |
1da177e4c Linux-2.6.12-rc2 |
384 |
* |
b788ee9c6 ide: use do_rw_ta... |
385 |
* 1. ide_tape_issue_pc will send the packet command to the drive, and will set |
aa5d2de7b ide: make ide_pc_... |
386 |
* the interrupt handler to ide_pc_intr. |
1da177e4c Linux-2.6.12-rc2 |
387 |
* |
aa5d2de7b ide: make ide_pc_... |
388 |
* 2. On each interrupt, ide_pc_intr will be called. This step will be |
3c98bf347 ide-tape: cleanup... |
389 |
* repeated until the device signals us that no more interrupts will be issued. |
1da177e4c Linux-2.6.12-rc2 |
390 |
* |
3c98bf347 ide-tape: cleanup... |
391 392 393 394 395 396 397 |
* 3. ATAPI Tape media access commands have immediate status with a delayed * process. In case of a successful initiation of a media access packet command, * the DSC bit will be set when the actual execution of the command is finished. * Since the tape drive will not issue an interrupt, we have to poll for this * event. In this case, we define the request as "low priority request" by * setting rq_status to IDETAPE_RQ_POSTPONED, set a timer to poll for DSC and * exit the driver. |
1da177e4c Linux-2.6.12-rc2 |
398 |
* |
3c98bf347 ide-tape: cleanup... |
399 400 |
* ide.c will then give higher priority to requests which originate from the * other device, until will change rq_status to RQ_ACTIVE. |
1da177e4c Linux-2.6.12-rc2 |
401 |
* |
3c98bf347 ide-tape: cleanup... |
402 |
* 4. When the packet command is finished, it will be checked for errors. |
1da177e4c Linux-2.6.12-rc2 |
403 |
* |
3c98bf347 ide-tape: cleanup... |
404 405 406 |
* 5. In case an error was found, we queue a request sense packet command in * front of the request queue and retry the operation up to * IDETAPE_MAX_PC_RETRIES times. |
1da177e4c Linux-2.6.12-rc2 |
407 |
* |
3c98bf347 ide-tape: cleanup... |
408 409 410 |
* 6. In case no error was found, or we decided to give up and not to retry * again, the callback function will be called and then we will handle the next * request. |
1da177e4c Linux-2.6.12-rc2 |
411 |
*/ |
1da177e4c Linux-2.6.12-rc2 |
412 |
|
b788ee9c6 ide: use do_rw_ta... |
413 414 415 |
static ide_startstop_t ide_tape_issue_pc(ide_drive_t *drive, struct ide_cmd *cmd, struct ide_atapi_pc *pc) |
1da177e4c Linux-2.6.12-rc2 |
416 |
{ |
1da177e4c Linux-2.6.12-rc2 |
417 |
idetape_tape_t *tape = drive->driver_data; |
dfb7e621f ide-atapi: switch... |
418 |
struct request *rq = drive->hwif->rq; |
1da177e4c Linux-2.6.12-rc2 |
419 |
|
5e2040fd0 ide: move ->faile... |
420 421 |
if (drive->failed_pc == NULL && pc->c[0] != REQUEST_SENSE) drive->failed_pc = pc; |
2b9efba48 ide: add pointer ... |
422 |
|
1da177e4c Linux-2.6.12-rc2 |
423 |
/* Set the current packet command */ |
2b9efba48 ide: add pointer ... |
424 |
drive->pc = pc; |
1da177e4c Linux-2.6.12-rc2 |
425 426 |
if (pc->retries > IDETAPE_MAX_PC_RETRIES || |
346331f82 ide-tape: remove ... |
427 |
(pc->flags & PC_FLAG_ABORT)) { |
b3071d190 ide-atapi,tape,fl... |
428 |
|
1da177e4c Linux-2.6.12-rc2 |
429 |
/* |
3c98bf347 ide-tape: cleanup... |
430 431 432 |
* We will "abort" retrying a packet command in case legitimate * error code was received (crossing a filemark, or end of the * media, for example). |
1da177e4c Linux-2.6.12-rc2 |
433 |
*/ |
346331f82 ide-tape: remove ... |
434 |
if (!(pc->flags & PC_FLAG_ABORT)) { |
90699ce2b ide-tape: use gen... |
435 |
if (!(pc->c[0] == TEST_UNIT_READY && |
1da177e4c Linux-2.6.12-rc2 |
436 437 438 439 440 441 442 443 444 445 446 |
tape->sense_key == 2 && tape->asc == 4 && (tape->ascq == 1 || tape->ascq == 8))) { printk(KERN_ERR "ide-tape: %s: I/O error, " "pc = %2x, key = %2x, " "asc = %2x, ascq = %2x ", tape->name, pc->c[0], tape->sense_key, tape->asc, tape->ascq); } /* Giving up */ |
c152cc1a9 ide: use ->end_re... |
447 |
pc->error = IDE_DRV_ERROR_GENERAL; |
1da177e4c Linux-2.6.12-rc2 |
448 |
} |
b3071d190 ide-atapi,tape,fl... |
449 |
|
5e2040fd0 ide: move ->faile... |
450 |
drive->failed_pc = NULL; |
b14c72127 ide: drop dsc_han... |
451 |
drive->pc_callback(drive, 0); |
dfb7e621f ide-atapi: switch... |
452 |
ide_complete_rq(drive, -EIO, blk_rq_bytes(rq)); |
92f5daff2 ide-tape: make pc... |
453 |
return ide_stopped; |
1da177e4c Linux-2.6.12-rc2 |
454 |
} |
e972d7027 ide-tape: convert... |
455 456 |
ide_debug_log(IDE_DBG_SENSE, "retry #%d, cmd: 0x%02x", pc->retries, pc->c[0]); |
1da177e4c Linux-2.6.12-rc2 |
457 458 |
pc->retries++; |
1da177e4c Linux-2.6.12-rc2 |
459 |
|
b788ee9c6 ide: use do_rw_ta... |
460 |
return ide_issue_pc(drive, cmd); |
1da177e4c Linux-2.6.12-rc2 |
461 |
} |
3c98bf347 ide-tape: cleanup... |
462 |
/* A mode sense command is used to "sense" tape parameters. */ |
d236d74c0 ide-tape: convert... |
463 |
static void idetape_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code) |
1da177e4c Linux-2.6.12-rc2 |
464 |
{ |
7bf7420a3 ide: add ide_init... |
465 |
ide_init_pc(pc); |
90699ce2b ide-tape: use gen... |
466 |
pc->c[0] = MODE_SENSE; |
1da177e4c Linux-2.6.12-rc2 |
467 |
if (page_code != IDETAPE_BLOCK_DESCRIPTOR) |
3c98bf347 ide-tape: cleanup... |
468 469 |
/* DBD = 1 - Don't return block descriptors */ pc->c[1] = 8; |
1da177e4c Linux-2.6.12-rc2 |
470 471 472 473 474 475 476 477 478 |
pc->c[2] = page_code; /* * Changed pc->c[3] to 0 (255 will at best return unused info). * * For SCSI this byte is defined as subpage instead of high byte * of length and some IDE drives seem to interpret it this way * and return an error when 255 is used. */ pc->c[3] = 0; |
3c98bf347 ide-tape: cleanup... |
479 480 |
/* We will just discard data in that case */ pc->c[4] = 255; |
1da177e4c Linux-2.6.12-rc2 |
481 |
if (page_code == IDETAPE_BLOCK_DESCRIPTOR) |
d236d74c0 ide-tape: convert... |
482 |
pc->req_xfer = 12; |
1da177e4c Linux-2.6.12-rc2 |
483 |
else if (page_code == IDETAPE_CAPABILITIES_PAGE) |
d236d74c0 ide-tape: convert... |
484 |
pc->req_xfer = 24; |
1da177e4c Linux-2.6.12-rc2 |
485 |
else |
d236d74c0 ide-tape: convert... |
486 |
pc->req_xfer = 50; |
1da177e4c Linux-2.6.12-rc2 |
487 |
} |
5a04cfa91 ide-tape: cleanup... |
488 |
static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
489 |
{ |
b73c7ee25 ide: add ->read_s... |
490 |
ide_hwif_t *hwif = drive->hwif; |
1da177e4c Linux-2.6.12-rc2 |
491 |
idetape_tape_t *tape = drive->driver_data; |
2b9efba48 ide: add pointer ... |
492 |
struct ide_atapi_pc *pc = drive->pc; |
22c525b97 ide: remove ata_s... |
493 |
u8 stat; |
1da177e4c Linux-2.6.12-rc2 |
494 |
|
374e042c3 ide: add struct i... |
495 |
stat = hwif->tp_ops->read_status(hwif); |
c47137a99 ide: add ide_read... |
496 |
|
3a7d24841 ide: use ATA_* de... |
497 498 |
if (stat & ATA_DSC) { if (stat & ATA_ERR) { |
1da177e4c Linux-2.6.12-rc2 |
499 |
/* Error detected */ |
90699ce2b ide-tape: use gen... |
500 |
if (pc->c[0] != TEST_UNIT_READY) |
1da177e4c Linux-2.6.12-rc2 |
501 502 503 |
printk(KERN_ERR "ide-tape: %s: I/O error, ", tape->name); /* Retry operation */ |
6b544fcc8 ide-atapi: conver... |
504 |
ide_retry_pc(drive); |
258ec4113 ide-tape: make id... |
505 |
return ide_stopped; |
1da177e4c Linux-2.6.12-rc2 |
506 507 |
} pc->error = 0; |
1da177e4c Linux-2.6.12-rc2 |
508 |
} else { |
c152cc1a9 ide: use ->end_re... |
509 |
pc->error = IDE_DRV_ERROR_GENERAL; |
5e2040fd0 ide: move ->faile... |
510 |
drive->failed_pc = NULL; |
1da177e4c Linux-2.6.12-rc2 |
511 |
} |
b14c72127 ide: drop dsc_han... |
512 |
drive->pc_callback(drive, 0); |
1da177e4c Linux-2.6.12-rc2 |
513 514 |
return ide_stopped; } |
cd2abbfec ide-tape: unify i... |
515 |
static void ide_tape_create_rw_cmd(idetape_tape_t *tape, |
0014c75be ide-tape: pass pa... |
516 517 |
struct ide_atapi_pc *pc, struct request *rq, u8 opcode) |
1da177e4c Linux-2.6.12-rc2 |
518 |
{ |
10c0b3437 ide-tape: fix pot... |
519 |
unsigned int length = blk_rq_sectors(rq) / (tape->blk_size >> 9); |
0014c75be ide-tape: pass pa... |
520 |
|
7bf7420a3 ide: add ide_init... |
521 |
ide_init_pc(pc); |
860ff5ecb ide-tape: use gen... |
522 |
put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]); |
1da177e4c Linux-2.6.12-rc2 |
523 |
pc->c[1] = 1; |
19f52a784 ide-atapi: remove... |
524 525 |
if (blk_rq_bytes(rq) == tape->buffer_size) |
5e3310958 ide-{floppy,tape}... |
526 |
pc->flags |= PC_FLAG_DMA_OK; |
1da177e4c Linux-2.6.12-rc2 |
527 |
|
963da55c4 ide-tape: kill id... |
528 |
if (opcode == READ_6) |
cd2abbfec ide-tape: unify i... |
529 |
pc->c[0] = READ_6; |
963da55c4 ide-tape: kill id... |
530 |
else if (opcode == WRITE_6) { |
cd2abbfec ide-tape: unify i... |
531 532 |
pc->c[0] = WRITE_6; pc->flags |= PC_FLAG_WRITING; |
cd2abbfec ide-tape: unify i... |
533 |
} |
0014c75be ide-tape: pass pa... |
534 535 |
memcpy(rq->cmd, pc->c, 12); |
1da177e4c Linux-2.6.12-rc2 |
536 |
} |
1da177e4c Linux-2.6.12-rc2 |
537 538 539 |
static ide_startstop_t idetape_do_request(ide_drive_t *drive, struct request *rq, sector_t block) { |
b73c7ee25 ide: add ->read_s... |
540 |
ide_hwif_t *hwif = drive->hwif; |
1da177e4c Linux-2.6.12-rc2 |
541 |
idetape_tape_t *tape = drive->driver_data; |
d236d74c0 ide-tape: convert... |
542 |
struct ide_atapi_pc *pc = NULL; |
b788ee9c6 ide: use do_rw_ta... |
543 |
struct ide_cmd cmd; |
22c525b97 ide: remove ata_s... |
544 |
u8 stat; |
1da177e4c Linux-2.6.12-rc2 |
545 |
|
e972d7027 ide-tape: convert... |
546 547 548 |
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)); |
1da177e4c Linux-2.6.12-rc2 |
549 |
|
33659ebba block: remove wra... |
550 551 |
BUG_ON(!(rq->cmd_type == REQ_TYPE_SPECIAL || rq->cmd_type == REQ_TYPE_SENSE)); |
1da177e4c Linux-2.6.12-rc2 |
552 |
|
3c98bf347 ide-tape: cleanup... |
553 |
/* Retry a failed packet command */ |
5e2040fd0 ide: move ->faile... |
554 555 |
if (drive->failed_pc && drive->pc->c[0] == REQUEST_SENSE) { pc = drive->failed_pc; |
28c7214bd ide: add PC_FLAG_... |
556 557 |
goto out; } |
5a04cfa91 ide-tape: cleanup... |
558 |
|
1da177e4c Linux-2.6.12-rc2 |
559 560 561 562 |
/* * If the tape is still busy, postpone our request and service * the other device meanwhile. */ |
374e042c3 ide: add struct i... |
563 |
stat = hwif->tp_ops->read_status(hwif); |
1da177e4c Linux-2.6.12-rc2 |
564 |
|
97100fc81 ide: add device f... |
565 566 |
if ((drive->dev_flags & IDE_DFLAG_DSC_OVERLAP) == 0 && (rq->cmd[13] & REQ_IDETAPE_PC2) == 0) |
626542ca2 ide-tape: change ... |
567 |
drive->atapi_flags |= IDE_AFLAG_IGNORE_DSC; |
1da177e4c Linux-2.6.12-rc2 |
568 |
|
97100fc81 ide: add device f... |
569 |
if (drive->dev_flags & IDE_DFLAG_POST_RESET) { |
626542ca2 ide-tape: change ... |
570 |
drive->atapi_flags |= IDE_AFLAG_IGNORE_DSC; |
97100fc81 ide: add device f... |
571 |
drive->dev_flags &= ~IDE_DFLAG_POST_RESET; |
1da177e4c Linux-2.6.12-rc2 |
572 |
} |
626542ca2 ide-tape: change ... |
573 574 |
if (!(drive->atapi_flags & IDE_AFLAG_IGNORE_DSC) && !(stat & ATA_DSC)) { |
6f3848ac2 ide-tape: fix han... |
575 |
if (!tape->postponed_rq) { |
1da177e4c Linux-2.6.12-rc2 |
576 |
tape->dsc_polling_start = jiffies; |
54bb2074c ide-tape: struct ... |
577 |
tape->dsc_poll_freq = tape->best_dsc_rw_freq; |
1da177e4c Linux-2.6.12-rc2 |
578 579 580 581 582 |
tape->dsc_timeout = jiffies + IDETAPE_DSC_RW_TIMEOUT; } else if (time_after(jiffies, tape->dsc_timeout)) { printk(KERN_ERR "ide-tape: %s: DSC timeout ", tape->name); |
83dd57351 ide-tape: make ro... |
583 |
if (rq->cmd[13] & REQ_IDETAPE_PC2) { |
1da177e4c Linux-2.6.12-rc2 |
584 585 586 587 588 |
idetape_media_access_finished(drive); return ide_stopped; } else { return ide_do_reset(drive); } |
5a04cfa91 ide-tape: cleanup... |
589 590 591 |
} else if (time_after(jiffies, tape->dsc_polling_start + IDETAPE_DSC_MA_THRESHOLD)) |
54bb2074c ide-tape: struct ... |
592 |
tape->dsc_poll_freq = IDETAPE_DSC_MA_SLOW; |
6f3848ac2 ide-tape: fix han... |
593 |
ide_tape_stall_queue(drive); |
1da177e4c Linux-2.6.12-rc2 |
594 |
return ide_stopped; |
6f3848ac2 ide-tape: fix han... |
595 |
} else { |
626542ca2 ide-tape: change ... |
596 |
drive->atapi_flags &= ~IDE_AFLAG_IGNORE_DSC; |
6f3848ac2 ide-tape: fix han... |
597 598 |
tape->postponed_rq = false; } |
626542ca2 ide-tape: change ... |
599 |
|
83dd57351 ide-tape: make ro... |
600 |
if (rq->cmd[13] & REQ_IDETAPE_READ) { |
2e8a6f89d ide-{floppy,tape}... |
601 |
pc = &tape->queued_pc; |
0014c75be ide-tape: pass pa... |
602 |
ide_tape_create_rw_cmd(tape, pc, rq, READ_6); |
1da177e4c Linux-2.6.12-rc2 |
603 604 |
goto out; } |
83dd57351 ide-tape: make ro... |
605 |
if (rq->cmd[13] & REQ_IDETAPE_WRITE) { |
2e8a6f89d ide-{floppy,tape}... |
606 |
pc = &tape->queued_pc; |
0014c75be ide-tape: pass pa... |
607 |
ide_tape_create_rw_cmd(tape, pc, rq, WRITE_6); |
1da177e4c Linux-2.6.12-rc2 |
608 609 |
goto out; } |
83dd57351 ide-tape: make ro... |
610 |
if (rq->cmd[13] & REQ_IDETAPE_PC1) { |
c267cc1c4 ide-atapi: don't ... |
611 |
pc = (struct ide_atapi_pc *)rq->special; |
83dd57351 ide-tape: make ro... |
612 613 |
rq->cmd[13] &= ~(REQ_IDETAPE_PC1); rq->cmd[13] |= REQ_IDETAPE_PC2; |
1da177e4c Linux-2.6.12-rc2 |
614 615 |
goto out; } |
83dd57351 ide-tape: make ro... |
616 |
if (rq->cmd[13] & REQ_IDETAPE_PC2) { |
1da177e4c Linux-2.6.12-rc2 |
617 618 619 620 |
idetape_media_access_finished(drive); return ide_stopped; } BUG(); |
28c7214bd ide: add PC_FLAG_... |
621 |
|
f2e3ab52a ide-tape: convert... |
622 |
out: |
6b544fcc8 ide-atapi: conver... |
623 624 |
/* prepare sense request for this command */ ide_prep_sense(drive, rq); |
b788ee9c6 ide: use do_rw_ta... |
625 626 627 628 629 630 |
memset(&cmd, 0, sizeof(cmd)); if (rq_data_dir(rq)) cmd.tf_flags |= IDE_TFLAG_WRITE; cmd.rq = rq; |
dfb7e621f ide-atapi: switch... |
631 |
ide_init_sg_cmd(&cmd, blk_rq_bytes(rq)); |
5c4be5724 ide-cd,atapi: use... |
632 |
ide_map_sg(drive, &cmd); |
b788ee9c6 ide: use do_rw_ta... |
633 |
return ide_tape_issue_pc(drive, &cmd, pc); |
1da177e4c Linux-2.6.12-rc2 |
634 |
} |
1da177e4c Linux-2.6.12-rc2 |
635 |
/* |
3c98bf347 ide-tape: cleanup... |
636 637 |
* Write a filemark if write_filemark=1. Flush the device buffers without * writing a filemark otherwise. |
1da177e4c Linux-2.6.12-rc2 |
638 |
*/ |
5a04cfa91 ide-tape: cleanup... |
639 |
static void idetape_create_write_filemark_cmd(ide_drive_t *drive, |
d236d74c0 ide-tape: convert... |
640 |
struct ide_atapi_pc *pc, int write_filemark) |
1da177e4c Linux-2.6.12-rc2 |
641 |
{ |
7bf7420a3 ide: add ide_init... |
642 |
ide_init_pc(pc); |
90699ce2b ide-tape: use gen... |
643 |
pc->c[0] = WRITE_FILEMARKS; |
1da177e4c Linux-2.6.12-rc2 |
644 |
pc->c[4] = write_filemark; |
346331f82 ide-tape: remove ... |
645 |
pc->flags |= PC_FLAG_WAIT_FOR_DSC; |
1da177e4c Linux-2.6.12-rc2 |
646 |
} |
1da177e4c Linux-2.6.12-rc2 |
647 648 649 |
static int idetape_wait_ready(ide_drive_t *drive, unsigned long timeout) { idetape_tape_t *tape = drive->driver_data; |
2ac07d920 ide: add ide_queu... |
650 |
struct gendisk *disk = tape->disk; |
1da177e4c Linux-2.6.12-rc2 |
651 |
int load_attempted = 0; |
3c98bf347 ide-tape: cleanup... |
652 |
/* Wait for the tape to become ready */ |
49d8078ad ide-tape: fix IDE... |
653 |
set_bit(ilog2(IDE_AFLAG_MEDIUM_PRESENT), &drive->atapi_flags); |
1da177e4c Linux-2.6.12-rc2 |
654 655 |
timeout += jiffies; while (time_before(jiffies, timeout)) { |
de699ad59 ide: add ide_do_t... |
656 |
if (ide_do_test_unit_ready(drive, disk) == 0) |
1da177e4c Linux-2.6.12-rc2 |
657 658 |
return 0; if ((tape->sense_key == 2 && tape->asc == 4 && tape->ascq == 2) |
3c98bf347 ide-tape: cleanup... |
659 660 |
|| (tape->asc == 0x3A)) { /* no media */ |
1da177e4c Linux-2.6.12-rc2 |
661 662 |
if (load_attempted) return -ENOMEDIUM; |
0c8a6c7ae ide: add ide_do_s... |
663 |
ide_do_start_stop(drive, disk, IDETAPE_LU_LOAD_MASK); |
1da177e4c Linux-2.6.12-rc2 |
664 665 666 667 668 |
load_attempted = 1; /* not about to be ready */ } else if (!(tape->sense_key == 2 && tape->asc == 4 && (tape->ascq == 1 || tape->ascq == 8))) return -EIO; |
80ce45fd9 [PATCH] janitor: ... |
669 |
msleep(100); |
1da177e4c Linux-2.6.12-rc2 |
670 671 672 |
} return -EIO; } |
5a04cfa91 ide-tape: cleanup... |
673 |
static int idetape_flush_tape_buffers(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
674 |
{ |
2ac07d920 ide: add ide_queu... |
675 |
struct ide_tape_obj *tape = drive->driver_data; |
d236d74c0 ide-tape: convert... |
676 |
struct ide_atapi_pc pc; |
1da177e4c Linux-2.6.12-rc2 |
677 678 679 |
int rc; idetape_create_write_filemark_cmd(drive, &pc, 0); |
b13345f39 ide-atapi: add a ... |
680 |
rc = ide_queue_pc_tail(drive, tape->disk, &pc, NULL, 0); |
5a04cfa91 ide-tape: cleanup... |
681 |
if (rc) |
1da177e4c Linux-2.6.12-rc2 |
682 683 684 685 |
return rc; idetape_wait_ready(drive, 60 * 5 * HZ); return 0; } |
55ce3a129 ide-tape: fix REA... |
686 |
static int ide_tape_read_position(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
687 688 |
{ idetape_tape_t *tape = drive->driver_data; |
d236d74c0 ide-tape: convert... |
689 |
struct ide_atapi_pc pc; |
55ce3a129 ide-tape: fix REA... |
690 |
u8 buf[20]; |
1da177e4c Linux-2.6.12-rc2 |
691 |
|
e972d7027 ide-tape: convert... |
692 |
ide_debug_log(IDE_DBG_FUNC, "enter"); |
1da177e4c Linux-2.6.12-rc2 |
693 |
|
55ce3a129 ide-tape: fix REA... |
694 695 696 697 698 699 |
/* prep cmd */ ide_init_pc(&pc); pc.c[0] = READ_POSITION; pc.req_xfer = 20; if (ide_queue_pc_tail(drive, tape->disk, &pc, buf, pc.req_xfer)) |
1da177e4c Linux-2.6.12-rc2 |
700 |
return -1; |
55ce3a129 ide-tape: fix REA... |
701 702 |
if (!pc.error) { |
e972d7027 ide-tape: convert... |
703 |
ide_debug_log(IDE_DBG_FUNC, "BOP - %s", |
55ce3a129 ide-tape: fix REA... |
704 |
(buf[0] & 0x80) ? "Yes" : "No"); |
e972d7027 ide-tape: convert... |
705 |
ide_debug_log(IDE_DBG_FUNC, "EOP - %s", |
55ce3a129 ide-tape: fix REA... |
706 707 708 709 710 711 |
(buf[0] & 0x40) ? "Yes" : "No"); if (buf[0] & 0x4) { printk(KERN_INFO "ide-tape: Block location is unknown" "to the tape "); |
8dcce4081 Merge branch 'bp-... |
712 713 |
clear_bit(ilog2(IDE_AFLAG_ADDRESS_VALID), &drive->atapi_flags); |
55ce3a129 ide-tape: fix REA... |
714 715 |
return -1; } else { |
e972d7027 ide-tape: convert... |
716 717 |
ide_debug_log(IDE_DBG_FUNC, "Block Location: %u", be32_to_cpup((__be32 *)&buf[4])); |
55ce3a129 ide-tape: fix REA... |
718 719 720 |
tape->partition = buf[1]; tape->first_frame = be32_to_cpup((__be32 *)&buf[4]); |
8dcce4081 Merge branch 'bp-... |
721 722 |
set_bit(ilog2(IDE_AFLAG_ADDRESS_VALID), &drive->atapi_flags); |
55ce3a129 ide-tape: fix REA... |
723 724 725 726 |
} } return tape->first_frame; |
1da177e4c Linux-2.6.12-rc2 |
727 |
} |
d236d74c0 ide-tape: convert... |
728 729 |
static void idetape_create_locate_cmd(ide_drive_t *drive, struct ide_atapi_pc *pc, |
5a04cfa91 ide-tape: cleanup... |
730 |
unsigned int block, u8 partition, int skip) |
1da177e4c Linux-2.6.12-rc2 |
731 |
{ |
7bf7420a3 ide: add ide_init... |
732 |
ide_init_pc(pc); |
90699ce2b ide-tape: use gen... |
733 |
pc->c[0] = POSITION_TO_ELEMENT; |
1da177e4c Linux-2.6.12-rc2 |
734 |
pc->c[1] = 2; |
860ff5ecb ide-tape: use gen... |
735 |
put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[3]); |
1da177e4c Linux-2.6.12-rc2 |
736 |
pc->c[8] = partition; |
346331f82 ide-tape: remove ... |
737 |
pc->flags |= PC_FLAG_WAIT_FOR_DSC; |
1da177e4c Linux-2.6.12-rc2 |
738 |
} |
ec0fdb01f ide-tape: mv idet... |
739 |
static void __ide_tape_discard_merge_buffer(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
740 741 |
{ idetape_tape_t *tape = drive->driver_data; |
1da177e4c Linux-2.6.12-rc2 |
742 |
|
54abf37e4 ide-tape: remove ... |
743 |
if (tape->chrdev_dir != IDETAPE_DIR_READ) |
9798630a7 ide-tape: make __... |
744 |
return; |
1da177e4c Linux-2.6.12-rc2 |
745 |
|
49d8078ad ide-tape: fix IDE... |
746 |
clear_bit(ilog2(IDE_AFLAG_FILEMARK), &drive->atapi_flags); |
963da55c4 ide-tape: kill id... |
747 748 749 750 |
tape->valid = 0; if (tape->buf != NULL) { kfree(tape->buf); tape->buf = NULL; |
1da177e4c Linux-2.6.12-rc2 |
751 |
} |
54abf37e4 ide-tape: remove ... |
752 |
tape->chrdev_dir = IDETAPE_DIR_NONE; |
1da177e4c Linux-2.6.12-rc2 |
753 754 755 |
} /* |
3c98bf347 ide-tape: cleanup... |
756 757 758 759 |
* Position the tape to the requested block using the LOCATE packet command. * A READ POSITION command is then issued to check where we are positioned. Like * all higher level operations, we queue the commands at the tail of the request * queue and wait for their completion. |
1da177e4c Linux-2.6.12-rc2 |
760 |
*/ |
5a04cfa91 ide-tape: cleanup... |
761 762 |
static int idetape_position_tape(ide_drive_t *drive, unsigned int block, u8 partition, int skip) |
1da177e4c Linux-2.6.12-rc2 |
763 764 |
{ idetape_tape_t *tape = drive->driver_data; |
2ac07d920 ide: add ide_queu... |
765 |
struct gendisk *disk = tape->disk; |
55ce3a129 ide-tape: fix REA... |
766 |
int ret; |
d236d74c0 ide-tape: convert... |
767 |
struct ide_atapi_pc pc; |
1da177e4c Linux-2.6.12-rc2 |
768 |
|
54abf37e4 ide-tape: remove ... |
769 |
if (tape->chrdev_dir == IDETAPE_DIR_READ) |
ec0fdb01f ide-tape: mv idet... |
770 |
__ide_tape_discard_merge_buffer(drive); |
1da177e4c Linux-2.6.12-rc2 |
771 772 |
idetape_wait_ready(drive, 60 * 5 * HZ); idetape_create_locate_cmd(drive, &pc, block, partition, skip); |
55ce3a129 ide-tape: fix REA... |
773 774 775 |
ret = ide_queue_pc_tail(drive, disk, &pc, NULL, 0); if (ret) return ret; |
1da177e4c Linux-2.6.12-rc2 |
776 |
|
55ce3a129 ide-tape: fix REA... |
777 778 779 780 |
ret = ide_tape_read_position(drive); if (ret < 0) return ret; return 0; |
1da177e4c Linux-2.6.12-rc2 |
781 |
} |
ec0fdb01f ide-tape: mv idet... |
782 |
static void ide_tape_discard_merge_buffer(ide_drive_t *drive, |
5a04cfa91 ide-tape: cleanup... |
783 |
int restore_position) |
1da177e4c Linux-2.6.12-rc2 |
784 785 |
{ idetape_tape_t *tape = drive->driver_data; |
1da177e4c Linux-2.6.12-rc2 |
786 |
int seek, position; |
ec0fdb01f ide-tape: mv idet... |
787 |
__ide_tape_discard_merge_buffer(drive); |
1da177e4c Linux-2.6.12-rc2 |
788 |
if (restore_position) { |
55ce3a129 ide-tape: fix REA... |
789 |
position = ide_tape_read_position(drive); |
9798630a7 ide-tape: make __... |
790 |
seek = position > 0 ? position : 0; |
1da177e4c Linux-2.6.12-rc2 |
791 |
if (idetape_position_tape(drive, seek, 0, 0)) { |
5a04cfa91 ide-tape: cleanup... |
792 |
printk(KERN_INFO "ide-tape: %s: position_tape failed in" |
ec0fdb01f ide-tape: mv idet... |
793 794 |
" %s ", tape->name, __func__); |
1da177e4c Linux-2.6.12-rc2 |
795 796 797 798 799 800 |
return; } } } /* |
3c98bf347 ide-tape: cleanup... |
801 802 |
* Generate a read/write request for the block device interface and wait for it * to be serviced. |
1da177e4c Linux-2.6.12-rc2 |
803 |
*/ |
6bb11dd14 ide-tape: use byt... |
804 |
static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int size) |
1da177e4c Linux-2.6.12-rc2 |
805 806 |
{ idetape_tape_t *tape = drive->driver_data; |
64ea1b4ab ide-tape: convert... |
807 |
struct request *rq; |
21d9c5d22 ide-tape: use sta... |
808 |
int ret; |
1da177e4c Linux-2.6.12-rc2 |
809 |
|
e972d7027 ide-tape: convert... |
810 |
ide_debug_log(IDE_DBG_FUNC, "cmd: 0x%x, size: %d", cmd, size); |
21d9c5d22 ide-tape: use sta... |
811 |
BUG_ON(cmd != REQ_IDETAPE_READ && cmd != REQ_IDETAPE_WRITE); |
6bb11dd14 ide-tape: use byt... |
812 |
BUG_ON(size < 0 || size % tape->blk_size); |
8004a8c97 ide-tape: refacto... |
813 |
|
64ea1b4ab ide-tape: convert... |
814 815 |
rq = blk_get_request(drive->queue, READ, __GFP_WAIT); rq->cmd_type = REQ_TYPE_SPECIAL; |
83dd57351 ide-tape: make ro... |
816 |
rq->cmd[13] = cmd; |
64ea1b4ab ide-tape: convert... |
817 |
rq->rq_disk = tape->disk; |
c9059598e Merge branch 'for... |
818 |
rq->__sector = tape->first_frame; |
21d9c5d22 ide-tape: use sta... |
819 820 |
if (size) { |
963da55c4 ide-tape: kill id... |
821 |
ret = blk_rq_map_kern(drive->queue, rq, tape->buf, size, |
21d9c5d22 ide-tape: use sta... |
822 823 824 825 |
__GFP_WAIT); if (ret) goto out_put; } |
64ea1b4ab ide-tape: convert... |
826 |
blk_execute_rq(drive->queue, tape->disk, rq, 0); |
963da55c4 ide-tape: kill id... |
827 |
/* calculate the number of transferred bytes and update buffer state */ |
c3a4d78c5 block: add rq->re... |
828 |
size -= rq->resid_len; |
963da55c4 ide-tape: kill id... |
829 |
tape->cur = tape->buf; |
21d9c5d22 ide-tape: use sta... |
830 |
if (cmd == REQ_IDETAPE_READ) |
963da55c4 ide-tape: kill id... |
831 832 833 |
tape->valid = size; else tape->valid = 0; |
1da177e4c Linux-2.6.12-rc2 |
834 |
|
21d9c5d22 ide-tape: use sta... |
835 836 837 |
ret = size; if (rq->errors == IDE_DRV_ERROR_GENERAL) ret = -EIO; |
21d9c5d22 ide-tape: use sta... |
838 839 |
out_put: blk_put_request(rq); |
64ea1b4ab ide-tape: convert... |
840 |
return ret; |
1da177e4c Linux-2.6.12-rc2 |
841 |
} |
d236d74c0 ide-tape: convert... |
842 |
static void idetape_create_inquiry_cmd(struct ide_atapi_pc *pc) |
1da177e4c Linux-2.6.12-rc2 |
843 |
{ |
7bf7420a3 ide: add ide_init... |
844 |
ide_init_pc(pc); |
90699ce2b ide-tape: use gen... |
845 |
pc->c[0] = INQUIRY; |
5a04cfa91 ide-tape: cleanup... |
846 |
pc->c[4] = 254; |
d236d74c0 ide-tape: convert... |
847 |
pc->req_xfer = 254; |
1da177e4c Linux-2.6.12-rc2 |
848 |
} |
d236d74c0 ide-tape: convert... |
849 850 |
static void idetape_create_rewind_cmd(ide_drive_t *drive, struct ide_atapi_pc *pc) |
1da177e4c Linux-2.6.12-rc2 |
851 |
{ |
7bf7420a3 ide: add ide_init... |
852 |
ide_init_pc(pc); |
90699ce2b ide-tape: use gen... |
853 |
pc->c[0] = REZERO_UNIT; |
346331f82 ide-tape: remove ... |
854 |
pc->flags |= PC_FLAG_WAIT_FOR_DSC; |
1da177e4c Linux-2.6.12-rc2 |
855 |
} |
d236d74c0 ide-tape: convert... |
856 |
static void idetape_create_erase_cmd(struct ide_atapi_pc *pc) |
1da177e4c Linux-2.6.12-rc2 |
857 |
{ |
7bf7420a3 ide: add ide_init... |
858 |
ide_init_pc(pc); |
90699ce2b ide-tape: use gen... |
859 |
pc->c[0] = ERASE; |
1da177e4c Linux-2.6.12-rc2 |
860 |
pc->c[1] = 1; |
346331f82 ide-tape: remove ... |
861 |
pc->flags |= PC_FLAG_WAIT_FOR_DSC; |
1da177e4c Linux-2.6.12-rc2 |
862 |
} |
d236d74c0 ide-tape: convert... |
863 |
static void idetape_create_space_cmd(struct ide_atapi_pc *pc, int count, u8 cmd) |
1da177e4c Linux-2.6.12-rc2 |
864 |
{ |
7bf7420a3 ide: add ide_init... |
865 |
ide_init_pc(pc); |
90699ce2b ide-tape: use gen... |
866 |
pc->c[0] = SPACE; |
860ff5ecb ide-tape: use gen... |
867 |
put_unaligned(cpu_to_be32(count), (unsigned int *) &pc->c[1]); |
1da177e4c Linux-2.6.12-rc2 |
868 |
pc->c[1] = cmd; |
346331f82 ide-tape: remove ... |
869 |
pc->flags |= PC_FLAG_WAIT_FOR_DSC; |
1da177e4c Linux-2.6.12-rc2 |
870 |
} |
d9df937af ide-tape: mv idet... |
871 |
static void ide_tape_flush_merge_buffer(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
872 873 |
{ idetape_tape_t *tape = drive->driver_data; |
55a5d291f ide-tape: remove ... |
874 |
|
54abf37e4 ide-tape: remove ... |
875 |
if (tape->chrdev_dir != IDETAPE_DIR_WRITE) { |
077e3bdb9 ide-tape: remove ... |
876 |
printk(KERN_ERR "ide-tape: bug: Trying to empty merge buffer" |
5a04cfa91 ide-tape: cleanup... |
877 878 |
" but we are not writing. "); |
1da177e4c Linux-2.6.12-rc2 |
879 880 |
return; } |
963da55c4 ide-tape: kill id... |
881 |
if (tape->buf) { |
6bb11dd14 ide-tape: use byt... |
882 883 884 |
size_t aligned = roundup(tape->valid, tape->blk_size); memset(tape->cur, 0, aligned - tape->valid); |
07bd9686c ide-tape: simplif... |
885 |
idetape_queue_rw_tail(drive, REQ_IDETAPE_WRITE, aligned); |
963da55c4 ide-tape: kill id... |
886 887 |
kfree(tape->buf); tape->buf = NULL; |
1da177e4c Linux-2.6.12-rc2 |
888 |
} |
54abf37e4 ide-tape: remove ... |
889 |
tape->chrdev_dir = IDETAPE_DIR_NONE; |
1da177e4c Linux-2.6.12-rc2 |
890 |
} |
88f1b941c ide-tape: unify r... |
891 |
static int idetape_init_rw(ide_drive_t *drive, int dir) |
1da177e4c Linux-2.6.12-rc2 |
892 893 |
{ idetape_tape_t *tape = drive->driver_data; |
88f1b941c ide-tape: unify r... |
894 |
int rc; |
1da177e4c Linux-2.6.12-rc2 |
895 |
|
88f1b941c ide-tape: unify r... |
896 |
BUG_ON(dir != IDETAPE_DIR_READ && dir != IDETAPE_DIR_WRITE); |
1da177e4c Linux-2.6.12-rc2 |
897 |
|
88f1b941c ide-tape: unify r... |
898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 |
if (tape->chrdev_dir == dir) return 0; if (tape->chrdev_dir == IDETAPE_DIR_READ) ide_tape_discard_merge_buffer(drive, 1); else if (tape->chrdev_dir == IDETAPE_DIR_WRITE) { ide_tape_flush_merge_buffer(drive); idetape_flush_tape_buffers(drive); } if (tape->buf || tape->valid) { printk(KERN_ERR "ide-tape: valid should be 0 now "); tape->valid = 0; } tape->buf = kmalloc(tape->buffer_size, GFP_KERNEL); if (!tape->buf) return -ENOMEM; tape->chrdev_dir = dir; tape->cur = tape->buf; /* * Issue a 0 rw command to ensure that DSC handshake is * switched from completion mode to buffer available mode. No * point in issuing this if DSC overlap isn't supported, some * drives (Seagate STT3401A) will return an error. */ if (drive->dev_flags & IDE_DFLAG_DSC_OVERLAP) { int cmd = dir == IDETAPE_DIR_READ ? REQ_IDETAPE_READ : REQ_IDETAPE_WRITE; rc = idetape_queue_rw_tail(drive, cmd, 0); if (rc < 0) { kfree(tape->buf); tape->buf = NULL; tape->chrdev_dir = IDETAPE_DIR_NONE; return rc; |
1da177e4c Linux-2.6.12-rc2 |
936 937 |
} } |
5e69bd959 ide-tape: remove ... |
938 |
|
1da177e4c Linux-2.6.12-rc2 |
939 940 |
return 0; } |
5a04cfa91 ide-tape: cleanup... |
941 |
static void idetape_pad_zeros(ide_drive_t *drive, int bcount) |
1da177e4c Linux-2.6.12-rc2 |
942 943 |
{ idetape_tape_t *tape = drive->driver_data; |
963da55c4 ide-tape: kill id... |
944 945 |
memset(tape->buf, 0, tape->buffer_size); |
3c98bf347 ide-tape: cleanup... |
946 |
|
1da177e4c Linux-2.6.12-rc2 |
947 |
while (bcount) { |
963da55c4 ide-tape: kill id... |
948 |
unsigned int count = min(tape->buffer_size, bcount); |
1da177e4c Linux-2.6.12-rc2 |
949 |
|
6bb11dd14 ide-tape: use byt... |
950 |
idetape_queue_rw_tail(drive, REQ_IDETAPE_WRITE, count); |
1da177e4c Linux-2.6.12-rc2 |
951 |
bcount -= count; |
1da177e4c Linux-2.6.12-rc2 |
952 953 |
} } |
1da177e4c Linux-2.6.12-rc2 |
954 |
/* |
3c98bf347 ide-tape: cleanup... |
955 956 957 |
* Rewinds the tape to the Beginning Of the current Partition (BOP). We * currently support only one partition. */ |
5a04cfa91 ide-tape: cleanup... |
958 |
static int idetape_rewind_tape(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
959 |
{ |
2ac07d920 ide: add ide_queu... |
960 961 |
struct ide_tape_obj *tape = drive->driver_data; struct gendisk *disk = tape->disk; |
d236d74c0 ide-tape: convert... |
962 |
struct ide_atapi_pc pc; |
55ce3a129 ide-tape: fix REA... |
963 |
int ret; |
8004a8c97 ide-tape: refacto... |
964 |
|
e972d7027 ide-tape: convert... |
965 |
ide_debug_log(IDE_DBG_FUNC, "enter"); |
8004a8c97 ide-tape: refacto... |
966 |
|
1da177e4c Linux-2.6.12-rc2 |
967 |
idetape_create_rewind_cmd(drive, &pc); |
55ce3a129 ide-tape: fix REA... |
968 969 970 |
ret = ide_queue_pc_tail(drive, disk, &pc, NULL, 0); if (ret) return ret; |
1da177e4c Linux-2.6.12-rc2 |
971 |
|
55ce3a129 ide-tape: fix REA... |
972 973 974 |
ret = ide_tape_read_position(drive); if (ret < 0) return ret; |
1da177e4c Linux-2.6.12-rc2 |
975 976 |
return 0; } |
3c98bf347 ide-tape: cleanup... |
977 |
/* mtio.h compatible commands should be issued to the chrdev interface. */ |
5a04cfa91 ide-tape: cleanup... |
978 979 |
static int idetape_blkdev_ioctl(ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
1da177e4c Linux-2.6.12-rc2 |
980 981 |
{ idetape_tape_t *tape = drive->driver_data; |
1da177e4c Linux-2.6.12-rc2 |
982 |
void __user *argp = (void __user *)arg; |
d59823fa4 ide-tape: remove ... |
983 984 985 986 987 |
struct idetape_config { int dsc_rw_frequency; int dsc_media_access_frequency; int nr_stages; } config; |
e972d7027 ide-tape: convert... |
988 |
ide_debug_log(IDE_DBG_FUNC, "cmd: 0x%04x", cmd); |
8004a8c97 ide-tape: refacto... |
989 |
|
1da177e4c Linux-2.6.12-rc2 |
990 |
switch (cmd) { |
5a04cfa91 ide-tape: cleanup... |
991 992 993 994 |
case 0x0340: if (copy_from_user(&config, argp, sizeof(config))) return -EFAULT; tape->best_dsc_rw_freq = config.dsc_rw_frequency; |
5a04cfa91 ide-tape: cleanup... |
995 996 |
break; case 0x0350: |
2fc2111c2 ide-tape: Don't l... |
997 |
memset(&config, 0, sizeof(config)); |
5a04cfa91 ide-tape: cleanup... |
998 |
config.dsc_rw_frequency = (int) tape->best_dsc_rw_freq; |
83042b241 ide-tape: remove ... |
999 |
config.nr_stages = 1; |
5a04cfa91 ide-tape: cleanup... |
1000 1001 1002 1003 1004 |
if (copy_to_user(argp, &config, sizeof(config))) return -EFAULT; break; default: return -EIO; |
1da177e4c Linux-2.6.12-rc2 |
1005 1006 1007 |
} return 0; } |
5a04cfa91 ide-tape: cleanup... |
1008 1009 |
static int idetape_space_over_filemarks(ide_drive_t *drive, short mt_op, int mt_count) |
1da177e4c Linux-2.6.12-rc2 |
1010 1011 |
{ idetape_tape_t *tape = drive->driver_data; |
2ac07d920 ide: add ide_queu... |
1012 |
struct gendisk *disk = tape->disk; |
d236d74c0 ide-tape: convert... |
1013 |
struct ide_atapi_pc pc; |
5a04cfa91 ide-tape: cleanup... |
1014 |
int retval, count = 0; |
b64220132 ide-tape: remove ... |
1015 |
int sprev = !!(tape->caps[4] & 0x20); |
1da177e4c Linux-2.6.12-rc2 |
1016 |
|
e972d7027 ide-tape: convert... |
1017 1018 |
ide_debug_log(IDE_DBG_FUNC, "mt_op: %d, mt_count: %d", mt_op, mt_count); |
1da177e4c Linux-2.6.12-rc2 |
1019 1020 1021 |
if (mt_count == 0) return 0; if (MTBSF == mt_op || MTBSFM == mt_op) { |
b64220132 ide-tape: remove ... |
1022 |
if (!sprev) |
1da177e4c Linux-2.6.12-rc2 |
1023 |
return -EIO; |
5a04cfa91 ide-tape: cleanup... |
1024 |
mt_count = -mt_count; |
1da177e4c Linux-2.6.12-rc2 |
1025 |
} |
54abf37e4 ide-tape: remove ... |
1026 |
if (tape->chrdev_dir == IDETAPE_DIR_READ) { |
963da55c4 ide-tape: kill id... |
1027 |
tape->valid = 0; |
49d8078ad ide-tape: fix IDE... |
1028 1029 |
if (test_and_clear_bit(ilog2(IDE_AFLAG_FILEMARK), &drive->atapi_flags)) |
1da177e4c Linux-2.6.12-rc2 |
1030 |
++count; |
ec0fdb01f ide-tape: mv idet... |
1031 |
ide_tape_discard_merge_buffer(drive, 0); |
1da177e4c Linux-2.6.12-rc2 |
1032 |
} |
1da177e4c Linux-2.6.12-rc2 |
1033 |
switch (mt_op) { |
5a04cfa91 ide-tape: cleanup... |
1034 1035 1036 1037 |
case MTFSF: case MTBSF: idetape_create_space_cmd(&pc, mt_count - count, IDETAPE_SPACE_OVER_FILEMARK); |
b13345f39 ide-atapi: add a ... |
1038 |
return ide_queue_pc_tail(drive, disk, &pc, NULL, 0); |
5a04cfa91 ide-tape: cleanup... |
1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 |
case MTFSFM: case MTBSFM: if (!sprev) return -EIO; retval = idetape_space_over_filemarks(drive, MTFSF, mt_count - count); if (retval) return retval; count = (MTBSFM == mt_op ? 1 : -1); return idetape_space_over_filemarks(drive, MTFSF, count); default: printk(KERN_ERR "ide-tape: MTIO operation %d not supported ", mt_op); return -EIO; |
1da177e4c Linux-2.6.12-rc2 |
1054 1055 |
} } |
1da177e4c Linux-2.6.12-rc2 |
1056 |
/* |
3c98bf347 ide-tape: cleanup... |
1057 |
* Our character device read / write functions. |
1da177e4c Linux-2.6.12-rc2 |
1058 |
* |
3c98bf347 ide-tape: cleanup... |
1059 1060 1061 |
* The tape is optimized to maximize throughput when it is transferring an * integral number of the "continuous transfer limit", which is a parameter of * the specific tape (26kB on my particular tape, 32kB for Onstream). |
1da177e4c Linux-2.6.12-rc2 |
1062 |
* |
3c98bf347 ide-tape: cleanup... |
1063 1064 1065 1066 1067 1068 1069 |
* As of version 1.3 of the driver, the character device provides an abstract * continuous view of the media - any mix of block sizes (even 1 byte) on the * same backup/restore procedure is supported. The driver will internally * convert the requests to the recommended transfer unit, so that an unmatch * between the user's block size to the recommended size will only result in a * (slightly) increased driver overhead, but will no longer hit performance. * This is not applicable to Onstream. |
1da177e4c Linux-2.6.12-rc2 |
1070 |
*/ |
5a04cfa91 ide-tape: cleanup... |
1071 1072 |
static ssize_t idetape_chrdev_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) |
1da177e4c Linux-2.6.12-rc2 |
1073 |
{ |
5aeddf907 ide: unify conver... |
1074 |
struct ide_tape_obj *tape = file->private_data; |
1da177e4c Linux-2.6.12-rc2 |
1075 |
ide_drive_t *drive = tape->drive; |
07bd9686c ide-tape: simplif... |
1076 |
size_t done = 0; |
dcd963796 [PATCH] idetape g... |
1077 |
ssize_t ret = 0; |
07bd9686c ide-tape: simplif... |
1078 |
int rc; |
1da177e4c Linux-2.6.12-rc2 |
1079 |
|
e972d7027 ide-tape: convert... |
1080 |
ide_debug_log(IDE_DBG_FUNC, "count %Zd", count); |
1da177e4c Linux-2.6.12-rc2 |
1081 |
|
54abf37e4 ide-tape: remove ... |
1082 |
if (tape->chrdev_dir != IDETAPE_DIR_READ) { |
49d8078ad ide-tape: fix IDE... |
1083 |
if (test_bit(ilog2(IDE_AFLAG_DETECT_BS), &drive->atapi_flags)) |
54bb2074c ide-tape: struct ... |
1084 1085 1086 |
if (count > tape->blk_size && (count % tape->blk_size) == 0) tape->user_bs_factor = count / tape->blk_size; |
1da177e4c Linux-2.6.12-rc2 |
1087 |
} |
07bd9686c ide-tape: simplif... |
1088 |
|
88f1b941c ide-tape: unify r... |
1089 |
rc = idetape_init_rw(drive, IDETAPE_DIR_READ); |
8d06bfadb ide-tape: shorten... |
1090 |
if (rc < 0) |
1da177e4c Linux-2.6.12-rc2 |
1091 |
return rc; |
07bd9686c ide-tape: simplif... |
1092 1093 1094 1095 1096 1097 1098 |
while (done < count) { size_t todo; /* refill if staging buffer is empty */ if (!tape->valid) { /* If we are at a filemark, nothing more to read */ |
49d8078ad ide-tape: fix IDE... |
1099 1100 |
if (test_bit(ilog2(IDE_AFLAG_FILEMARK), &drive->atapi_flags)) |
07bd9686c ide-tape: simplif... |
1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 |
break; /* read */ if (idetape_queue_rw_tail(drive, REQ_IDETAPE_READ, tape->buffer_size) <= 0) break; } /* copy out */ todo = min_t(size_t, count - done, tape->valid); if (copy_to_user(buf + done, tape->cur, todo)) |
dcd963796 [PATCH] idetape g... |
1111 |
ret = -EFAULT; |
07bd9686c ide-tape: simplif... |
1112 1113 1114 1115 |
tape->cur += todo; tape->valid -= todo; done += todo; |
1da177e4c Linux-2.6.12-rc2 |
1116 |
} |
07bd9686c ide-tape: simplif... |
1117 |
|
49d8078ad ide-tape: fix IDE... |
1118 |
if (!done && test_bit(ilog2(IDE_AFLAG_FILEMARK), &drive->atapi_flags)) { |
1da177e4c Linux-2.6.12-rc2 |
1119 1120 1121 |
idetape_space_over_filemarks(drive, MTFSF, 1); return 0; } |
dcd963796 [PATCH] idetape g... |
1122 |
|
07bd9686c ide-tape: simplif... |
1123 |
return ret ? ret : done; |
1da177e4c Linux-2.6.12-rc2 |
1124 |
} |
5a04cfa91 ide-tape: cleanup... |
1125 |
static ssize_t idetape_chrdev_write(struct file *file, const char __user *buf, |
1da177e4c Linux-2.6.12-rc2 |
1126 1127 |
size_t count, loff_t *ppos) { |
5aeddf907 ide: unify conver... |
1128 |
struct ide_tape_obj *tape = file->private_data; |
1da177e4c Linux-2.6.12-rc2 |
1129 |
ide_drive_t *drive = tape->drive; |
07bd9686c ide-tape: simplif... |
1130 |
size_t done = 0; |
dcd963796 [PATCH] idetape g... |
1131 |
ssize_t ret = 0; |
88f1b941c ide-tape: unify r... |
1132 |
int rc; |
1da177e4c Linux-2.6.12-rc2 |
1133 1134 1135 1136 |
/* The drive is write protected. */ if (tape->write_prot) return -EACCES; |
e972d7027 ide-tape: convert... |
1137 |
ide_debug_log(IDE_DBG_FUNC, "count %Zd", count); |
1da177e4c Linux-2.6.12-rc2 |
1138 1139 |
/* Initialize write operation */ |
88f1b941c ide-tape: unify r... |
1140 1141 1142 |
rc = idetape_init_rw(drive, IDETAPE_DIR_WRITE); if (rc < 0) return rc; |
07bd9686c ide-tape: simplif... |
1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 |
while (done < count) { size_t todo; /* flush if staging buffer is full */ if (tape->valid == tape->buffer_size && idetape_queue_rw_tail(drive, REQ_IDETAPE_WRITE, tape->buffer_size) <= 0) return rc; /* copy in */ todo = min_t(size_t, count - done, tape->buffer_size - tape->valid); if (copy_from_user(tape->cur, buf + done, todo)) |
dcd963796 [PATCH] idetape g... |
1157 |
ret = -EFAULT; |
07bd9686c ide-tape: simplif... |
1158 1159 1160 1161 |
tape->cur += todo; tape->valid += todo; done += todo; |
1da177e4c Linux-2.6.12-rc2 |
1162 |
} |
07bd9686c ide-tape: simplif... |
1163 1164 |
return ret ? ret : done; |
1da177e4c Linux-2.6.12-rc2 |
1165 |
} |
5a04cfa91 ide-tape: cleanup... |
1166 |
static int idetape_write_filemark(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
1167 |
{ |
2ac07d920 ide: add ide_queu... |
1168 |
struct ide_tape_obj *tape = drive->driver_data; |
d236d74c0 ide-tape: convert... |
1169 |
struct ide_atapi_pc pc; |
1da177e4c Linux-2.6.12-rc2 |
1170 1171 1172 |
/* Write a filemark */ idetape_create_write_filemark_cmd(drive, &pc, 1); |
b13345f39 ide-atapi: add a ... |
1173 |
if (ide_queue_pc_tail(drive, tape->disk, &pc, NULL, 0)) { |
1da177e4c Linux-2.6.12-rc2 |
1174 1175 1176 1177 1178 1179 1180 1181 |
printk(KERN_ERR "ide-tape: Couldn't write a filemark "); return -EIO; } return 0; } /* |
d99c9da21 ide-tape: remove ... |
1182 1183 |
* Called from idetape_chrdev_ioctl when the general mtio MTIOCTOP ioctl is * requested. |
1da177e4c Linux-2.6.12-rc2 |
1184 |
* |
d99c9da21 ide-tape: remove ... |
1185 1186 |
* Note: MTBSF and MTBSFM are not supported when the tape doesn't support * spacing over filemarks in the reverse direction. In this case, MTFSFM is also |
5bd50dc6a ide-tape: remove ... |
1187 |
* usually not supported. |
1da177e4c Linux-2.6.12-rc2 |
1188 |
* |
d99c9da21 ide-tape: remove ... |
1189 |
* The following commands are currently not supported: |
1da177e4c Linux-2.6.12-rc2 |
1190 |
* |
d99c9da21 ide-tape: remove ... |
1191 1192 |
* MTFSS, MTBSS, MTWSM, MTSETDENSITY, MTSETDRVBUFFER, MT_ST_BOOLEANS, * MT_ST_WRITE_THRESHOLD. |
1da177e4c Linux-2.6.12-rc2 |
1193 |
*/ |
d99c9da21 ide-tape: remove ... |
1194 |
static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count) |
1da177e4c Linux-2.6.12-rc2 |
1195 1196 |
{ idetape_tape_t *tape = drive->driver_data; |
2ac07d920 ide: add ide_queu... |
1197 |
struct gendisk *disk = tape->disk; |
d236d74c0 ide-tape: convert... |
1198 |
struct ide_atapi_pc pc; |
5a04cfa91 ide-tape: cleanup... |
1199 |
int i, retval; |
1da177e4c Linux-2.6.12-rc2 |
1200 |
|
e972d7027 ide-tape: convert... |
1201 1202 |
ide_debug_log(IDE_DBG_FUNC, "MTIOCTOP ioctl: mt_op: %d, mt_count: %d", mt_op, mt_count); |
5a04cfa91 ide-tape: cleanup... |
1203 |
|
1da177e4c Linux-2.6.12-rc2 |
1204 |
switch (mt_op) { |
5a04cfa91 ide-tape: cleanup... |
1205 1206 1207 1208 1209 1210 1211 1212 1213 |
case MTFSF: case MTFSFM: case MTBSF: case MTBSFM: if (!mt_count) return 0; return idetape_space_over_filemarks(drive, mt_op, mt_count); default: break; |
1da177e4c Linux-2.6.12-rc2 |
1214 |
} |
5a04cfa91 ide-tape: cleanup... |
1215 |
|
1da177e4c Linux-2.6.12-rc2 |
1216 |
switch (mt_op) { |
5a04cfa91 ide-tape: cleanup... |
1217 1218 1219 |
case MTWEOF: if (tape->write_prot) return -EACCES; |
ec0fdb01f ide-tape: mv idet... |
1220 |
ide_tape_discard_merge_buffer(drive, 1); |
5a04cfa91 ide-tape: cleanup... |
1221 1222 1223 1224 1225 1226 1227 |
for (i = 0; i < mt_count; i++) { retval = idetape_write_filemark(drive); if (retval) return retval; } return 0; case MTREW: |
ec0fdb01f ide-tape: mv idet... |
1228 |
ide_tape_discard_merge_buffer(drive, 0); |
5a04cfa91 ide-tape: cleanup... |
1229 1230 1231 1232 |
if (idetape_rewind_tape(drive)) return -EIO; return 0; case MTLOAD: |
ec0fdb01f ide-tape: mv idet... |
1233 |
ide_tape_discard_merge_buffer(drive, 0); |
0c8a6c7ae ide: add ide_do_s... |
1234 |
return ide_do_start_stop(drive, disk, IDETAPE_LU_LOAD_MASK); |
5a04cfa91 ide-tape: cleanup... |
1235 1236 1237 1238 1239 1240 1241 |
case MTUNLOAD: case MTOFFL: /* * If door is locked, attempt to unlock before * attempting to eject. */ if (tape->door_locked) { |
0578042db ide: add ide_set_... |
1242 |
if (!ide_set_media_lock(drive, disk, 0)) |
385a4b878 ide-tape: add ide... |
1243 |
tape->door_locked = DOOR_UNLOCKED; |
5a04cfa91 ide-tape: cleanup... |
1244 |
} |
ec0fdb01f ide-tape: mv idet... |
1245 |
ide_tape_discard_merge_buffer(drive, 0); |
0c8a6c7ae ide: add ide_do_s... |
1246 |
retval = ide_do_start_stop(drive, disk, !IDETAPE_LU_LOAD_MASK); |
5a04cfa91 ide-tape: cleanup... |
1247 |
if (!retval) |
49d8078ad ide-tape: fix IDE... |
1248 1249 |
clear_bit(ilog2(IDE_AFLAG_MEDIUM_PRESENT), &drive->atapi_flags); |
5a04cfa91 ide-tape: cleanup... |
1250 1251 |
return retval; case MTNOP: |
ec0fdb01f ide-tape: mv idet... |
1252 |
ide_tape_discard_merge_buffer(drive, 0); |
5a04cfa91 ide-tape: cleanup... |
1253 1254 |
return idetape_flush_tape_buffers(drive); case MTRETEN: |
ec0fdb01f ide-tape: mv idet... |
1255 |
ide_tape_discard_merge_buffer(drive, 0); |
0c8a6c7ae ide: add ide_do_s... |
1256 |
return ide_do_start_stop(drive, disk, |
5a04cfa91 ide-tape: cleanup... |
1257 |
IDETAPE_LU_RETENSION_MASK | IDETAPE_LU_LOAD_MASK); |
5a04cfa91 ide-tape: cleanup... |
1258 1259 |
case MTEOM: idetape_create_space_cmd(&pc, 0, IDETAPE_SPACE_TO_EOD); |
b13345f39 ide-atapi: add a ... |
1260 |
return ide_queue_pc_tail(drive, disk, &pc, NULL, 0); |
5a04cfa91 ide-tape: cleanup... |
1261 1262 1263 |
case MTERASE: (void)idetape_rewind_tape(drive); idetape_create_erase_cmd(&pc); |
b13345f39 ide-atapi: add a ... |
1264 |
return ide_queue_pc_tail(drive, disk, &pc, NULL, 0); |
5a04cfa91 ide-tape: cleanup... |
1265 1266 1267 1268 |
case MTSETBLK: if (mt_count) { if (mt_count < tape->blk_size || mt_count % tape->blk_size) |
1da177e4c Linux-2.6.12-rc2 |
1269 |
return -EIO; |
5a04cfa91 ide-tape: cleanup... |
1270 |
tape->user_bs_factor = mt_count / tape->blk_size; |
49d8078ad ide-tape: fix IDE... |
1271 1272 |
clear_bit(ilog2(IDE_AFLAG_DETECT_BS), &drive->atapi_flags); |
5a04cfa91 ide-tape: cleanup... |
1273 |
} else |
49d8078ad ide-tape: fix IDE... |
1274 1275 |
set_bit(ilog2(IDE_AFLAG_DETECT_BS), &drive->atapi_flags); |
5a04cfa91 ide-tape: cleanup... |
1276 1277 |
return 0; case MTSEEK: |
ec0fdb01f ide-tape: mv idet... |
1278 |
ide_tape_discard_merge_buffer(drive, 0); |
5a04cfa91 ide-tape: cleanup... |
1279 1280 1281 |
return idetape_position_tape(drive, mt_count * tape->user_bs_factor, tape->partition, 0); case MTSETPART: |
ec0fdb01f ide-tape: mv idet... |
1282 |
ide_tape_discard_merge_buffer(drive, 0); |
5a04cfa91 ide-tape: cleanup... |
1283 1284 1285 1286 |
return idetape_position_tape(drive, 0, mt_count, 0); case MTFSR: case MTBSR: case MTLOCK: |
0578042db ide: add ide_set_... |
1287 |
retval = ide_set_media_lock(drive, disk, 1); |
5a04cfa91 ide-tape: cleanup... |
1288 |
if (retval) |
1da177e4c Linux-2.6.12-rc2 |
1289 |
return retval; |
5a04cfa91 ide-tape: cleanup... |
1290 1291 1292 |
tape->door_locked = DOOR_EXPLICITLY_LOCKED; return 0; case MTUNLOCK: |
0578042db ide: add ide_set_... |
1293 |
retval = ide_set_media_lock(drive, disk, 0); |
5a04cfa91 ide-tape: cleanup... |
1294 1295 1296 1297 1298 1299 1300 1301 1302 |
if (retval) return retval; tape->door_locked = DOOR_UNLOCKED; return 0; default: printk(KERN_ERR "ide-tape: MTIO operation %d not supported ", mt_op); return -EIO; |
1da177e4c Linux-2.6.12-rc2 |
1303 1304 1305 1306 |
} } /* |
d99c9da21 ide-tape: remove ... |
1307 1308 1309 |
* Our character device ioctls. General mtio.h magnetic io commands are * supported here, and not in the corresponding block interface. Our own * ide-tape ioctls are supported on both interfaces. |
1da177e4c Linux-2.6.12-rc2 |
1310 |
*/ |
05227adff ide_tape: kill of... |
1311 |
static long do_idetape_chrdev_ioctl(struct file *file, |
d99c9da21 ide-tape: remove ... |
1312 |
unsigned int cmd, unsigned long arg) |
1da177e4c Linux-2.6.12-rc2 |
1313 |
{ |
5aeddf907 ide: unify conver... |
1314 |
struct ide_tape_obj *tape = file->private_data; |
1da177e4c Linux-2.6.12-rc2 |
1315 1316 1317 1318 |
ide_drive_t *drive = tape->drive; struct mtop mtop; struct mtget mtget; struct mtpos mtpos; |
54bb2074c ide-tape: struct ... |
1319 |
int block_offset = 0, position = tape->first_frame; |
1da177e4c Linux-2.6.12-rc2 |
1320 |
void __user *argp = (void __user *)arg; |
e972d7027 ide-tape: convert... |
1321 |
ide_debug_log(IDE_DBG_FUNC, "cmd: 0x%x", cmd); |
1da177e4c Linux-2.6.12-rc2 |
1322 |
|
54abf37e4 ide-tape: remove ... |
1323 |
if (tape->chrdev_dir == IDETAPE_DIR_WRITE) { |
d9df937af ide-tape: mv idet... |
1324 |
ide_tape_flush_merge_buffer(drive); |
1da177e4c Linux-2.6.12-rc2 |
1325 1326 1327 |
idetape_flush_tape_buffers(drive); } if (cmd == MTIOCGET || cmd == MTIOCPOS) { |
963da55c4 ide-tape: kill id... |
1328 |
block_offset = tape->valid / |
54bb2074c ide-tape: struct ... |
1329 |
(tape->blk_size * tape->user_bs_factor); |
55ce3a129 ide-tape: fix REA... |
1330 |
position = ide_tape_read_position(drive); |
5a04cfa91 ide-tape: cleanup... |
1331 |
if (position < 0) |
1da177e4c Linux-2.6.12-rc2 |
1332 1333 1334 |
return -EIO; } switch (cmd) { |
5a04cfa91 ide-tape: cleanup... |
1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 |
case MTIOCTOP: if (copy_from_user(&mtop, argp, sizeof(struct mtop))) return -EFAULT; return idetape_mtioctop(drive, mtop.mt_op, mtop.mt_count); case MTIOCGET: memset(&mtget, 0, sizeof(struct mtget)); mtget.mt_type = MT_ISSCSI2; mtget.mt_blkno = position / tape->user_bs_factor - block_offset; mtget.mt_dsreg = ((tape->blk_size * tape->user_bs_factor) << MT_ST_BLKSIZE_SHIFT) & MT_ST_BLKSIZE_MASK; if (tape->drv_write_prot) mtget.mt_gstat |= GMT_WR_PROT(0xffffffff); if (copy_to_user(argp, &mtget, sizeof(struct mtget))) return -EFAULT; return 0; case MTIOCPOS: mtpos.mt_blkno = position / tape->user_bs_factor - block_offset; if (copy_to_user(argp, &mtpos, sizeof(struct mtpos))) return -EFAULT; return 0; default: if (tape->chrdev_dir == IDETAPE_DIR_READ) |
ec0fdb01f ide-tape: mv idet... |
1360 |
ide_tape_discard_merge_buffer(drive, 1); |
5a04cfa91 ide-tape: cleanup... |
1361 |
return idetape_blkdev_ioctl(drive, cmd, arg); |
1da177e4c Linux-2.6.12-rc2 |
1362 1363 |
} } |
05227adff ide_tape: kill of... |
1364 1365 1366 1367 |
static long idetape_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { long ret; |
2a48fc0ab block: autoconver... |
1368 |
mutex_lock(&ide_tape_mutex); |
05227adff ide_tape: kill of... |
1369 |
ret = do_idetape_chrdev_ioctl(file, cmd, arg); |
2a48fc0ab block: autoconver... |
1370 |
mutex_unlock(&ide_tape_mutex); |
05227adff ide_tape: kill of... |
1371 1372 |
return ret; } |
3cffb9ce4 ide-tape: remove ... |
1373 1374 1375 1376 1377 1378 1379 |
/* * Do a mode sense page 0 with block descriptor and if it succeeds set the tape * block size with the reported value. */ static void ide_tape_get_bsize_from_bdesc(ide_drive_t *drive) { idetape_tape_t *tape = drive->driver_data; |
d236d74c0 ide-tape: convert... |
1380 |
struct ide_atapi_pc pc; |
837272b4f ide-tape/ide_tape... |
1381 |
u8 buf[12]; |
3cffb9ce4 ide-tape: remove ... |
1382 1383 |
idetape_create_mode_sense_cmd(&pc, IDETAPE_BLOCK_DESCRIPTOR); |
837272b4f ide-tape/ide_tape... |
1384 |
if (ide_queue_pc_tail(drive, tape->disk, &pc, buf, pc.req_xfer)) { |
3cffb9ce4 ide-tape: remove ... |
1385 1386 |
printk(KERN_ERR "ide-tape: Can't get block descriptor "); |
54bb2074c ide-tape: struct ... |
1387 |
if (tape->blk_size == 0) { |
3cffb9ce4 ide-tape: remove ... |
1388 1389 1390 |
printk(KERN_WARNING "ide-tape: Cannot deal with zero " "block size, assuming 32k "); |
54bb2074c ide-tape: struct ... |
1391 |
tape->blk_size = 32768; |
3cffb9ce4 ide-tape: remove ... |
1392 1393 1394 |
} return; } |
837272b4f ide-tape/ide_tape... |
1395 1396 1397 1398 |
tape->blk_size = (buf[4 + 5] << 16) + (buf[4 + 6] << 8) + buf[4 + 7]; tape->drv_write_prot = (buf[2] & 0x80) >> 7; |
e972d7027 ide-tape: convert... |
1399 1400 1401 |
ide_debug_log(IDE_DBG_FUNC, "blk_size: %d, write_prot: %d", tape->blk_size, tape->drv_write_prot); |
3cffb9ce4 ide-tape: remove ... |
1402 |
} |
1da177e4c Linux-2.6.12-rc2 |
1403 |
|
5a04cfa91 ide-tape: cleanup... |
1404 |
static int idetape_chrdev_open(struct inode *inode, struct file *filp) |
1da177e4c Linux-2.6.12-rc2 |
1405 1406 1407 1408 |
{ unsigned int minor = iminor(inode), i = minor & ~0xc0; ide_drive_t *drive; idetape_tape_t *tape; |
1da177e4c Linux-2.6.12-rc2 |
1409 |
int retval; |
8004a8c97 ide-tape: refacto... |
1410 1411 |
if (i >= MAX_HWIFS * MAX_DRIVES) return -ENXIO; |
cbba2fa7b ide-tape: remove ... |
1412 |
mutex_lock(&idetape_chrdev_mutex); |
9d01e4cd7 ide-tape: fix pro... |
1413 |
tape = ide_tape_get(NULL, true, i); |
04f4ac9d1 ide-tape: cdev lo... |
1414 |
if (!tape) { |
cbba2fa7b ide-tape: remove ... |
1415 |
mutex_unlock(&idetape_chrdev_mutex); |
8004a8c97 ide-tape: refacto... |
1416 |
return -ENXIO; |
04f4ac9d1 ide-tape: cdev lo... |
1417 |
} |
8004a8c97 ide-tape: refacto... |
1418 |
|
e972d7027 ide-tape: convert... |
1419 1420 1421 1422 |
drive = tape->drive; filp->private_data = tape; ide_debug_log(IDE_DBG_FUNC, "enter"); |
8004a8c97 ide-tape: refacto... |
1423 |
|
1da177e4c Linux-2.6.12-rc2 |
1424 1425 1426 1427 1428 1429 |
/* * We really want to do nonseekable_open(inode, filp); here, but some * versions of tar incorrectly call lseek on tapes and bail out if that * fails. So we disallow pread() and pwrite(), but permit lseeks. */ filp->f_mode &= ~(FMODE_PREAD | FMODE_PWRITE); |
1da177e4c Linux-2.6.12-rc2 |
1430 |
|
49d8078ad ide-tape: fix IDE... |
1431 |
if (test_and_set_bit(ilog2(IDE_AFLAG_BUSY), &drive->atapi_flags)) { |
1da177e4c Linux-2.6.12-rc2 |
1432 1433 1434 1435 1436 1437 |
retval = -EBUSY; goto out_put_tape; } retval = idetape_wait_ready(drive, 60 * HZ); if (retval) { |
49d8078ad ide-tape: fix IDE... |
1438 |
clear_bit(ilog2(IDE_AFLAG_BUSY), &drive->atapi_flags); |
1da177e4c Linux-2.6.12-rc2 |
1439 1440 1441 1442 |
printk(KERN_ERR "ide-tape: %s: drive not ready ", tape->name); goto out_put_tape; } |
79ca743f6 ide-tape: fix bui... |
1443 |
ide_tape_read_position(drive); |
49d8078ad ide-tape: fix IDE... |
1444 |
if (!test_bit(ilog2(IDE_AFLAG_ADDRESS_VALID), &drive->atapi_flags)) |
1da177e4c Linux-2.6.12-rc2 |
1445 |
(void)idetape_rewind_tape(drive); |
1da177e4c Linux-2.6.12-rc2 |
1446 |
/* Read block size and write protect status from drive. */ |
3cffb9ce4 ide-tape: remove ... |
1447 |
ide_tape_get_bsize_from_bdesc(drive); |
1da177e4c Linux-2.6.12-rc2 |
1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 |
/* Set write protect flag if device is opened as read-only. */ if ((filp->f_flags & O_ACCMODE) == O_RDONLY) tape->write_prot = 1; else tape->write_prot = tape->drv_write_prot; /* Make sure drive isn't write protected if user wants to write. */ if (tape->write_prot) { if ((filp->f_flags & O_ACCMODE) == O_WRONLY || (filp->f_flags & O_ACCMODE) == O_RDWR) { |
49d8078ad ide-tape: fix IDE... |
1459 |
clear_bit(ilog2(IDE_AFLAG_BUSY), &drive->atapi_flags); |
1da177e4c Linux-2.6.12-rc2 |
1460 1461 1462 1463 |
retval = -EROFS; goto out_put_tape; } } |
3c98bf347 ide-tape: cleanup... |
1464 |
/* Lock the tape drive door so user can't eject. */ |
54abf37e4 ide-tape: remove ... |
1465 |
if (tape->chrdev_dir == IDETAPE_DIR_NONE) { |
0578042db ide: add ide_set_... |
1466 |
if (!ide_set_media_lock(drive, tape->disk, 1)) { |
385a4b878 ide-tape: add ide... |
1467 1468 |
if (tape->door_locked != DOOR_EXPLICITLY_LOCKED) tape->door_locked = DOOR_LOCKED; |
1da177e4c Linux-2.6.12-rc2 |
1469 1470 |
} } |
cbba2fa7b ide-tape: remove ... |
1471 |
mutex_unlock(&idetape_chrdev_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1472 1473 1474 1475 |
return 0; out_put_tape: ide_tape_put(tape); |
cbba2fa7b ide-tape: remove ... |
1476 1477 |
mutex_unlock(&idetape_chrdev_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1478 1479 |
return retval; } |
5a04cfa91 ide-tape: cleanup... |
1480 |
static void idetape_write_release(ide_drive_t *drive, unsigned int minor) |
1da177e4c Linux-2.6.12-rc2 |
1481 1482 |
{ idetape_tape_t *tape = drive->driver_data; |
d9df937af ide-tape: mv idet... |
1483 |
ide_tape_flush_merge_buffer(drive); |
963da55c4 ide-tape: kill id... |
1484 1485 |
tape->buf = kmalloc(tape->buffer_size, GFP_KERNEL); if (tape->buf != NULL) { |
54bb2074c ide-tape: struct ... |
1486 1487 |
idetape_pad_zeros(drive, tape->blk_size * (tape->user_bs_factor - 1)); |
963da55c4 ide-tape: kill id... |
1488 1489 |
kfree(tape->buf); tape->buf = NULL; |
1da177e4c Linux-2.6.12-rc2 |
1490 1491 1492 1493 1494 |
} idetape_write_filemark(drive); idetape_flush_tape_buffers(drive); idetape_flush_tape_buffers(drive); } |
5a04cfa91 ide-tape: cleanup... |
1495 |
static int idetape_chrdev_release(struct inode *inode, struct file *filp) |
1da177e4c Linux-2.6.12-rc2 |
1496 |
{ |
5aeddf907 ide: unify conver... |
1497 |
struct ide_tape_obj *tape = filp->private_data; |
1da177e4c Linux-2.6.12-rc2 |
1498 |
ide_drive_t *drive = tape->drive; |
1da177e4c Linux-2.6.12-rc2 |
1499 |
unsigned int minor = iminor(inode); |
cbba2fa7b ide-tape: remove ... |
1500 |
mutex_lock(&idetape_chrdev_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1501 |
tape = drive->driver_data; |
8004a8c97 ide-tape: refacto... |
1502 |
|
e972d7027 ide-tape: convert... |
1503 |
ide_debug_log(IDE_DBG_FUNC, "enter"); |
1da177e4c Linux-2.6.12-rc2 |
1504 |
|
54abf37e4 ide-tape: remove ... |
1505 |
if (tape->chrdev_dir == IDETAPE_DIR_WRITE) |
1da177e4c Linux-2.6.12-rc2 |
1506 |
idetape_write_release(drive, minor); |
54abf37e4 ide-tape: remove ... |
1507 |
if (tape->chrdev_dir == IDETAPE_DIR_READ) { |
1da177e4c Linux-2.6.12-rc2 |
1508 |
if (minor < 128) |
ec0fdb01f ide-tape: mv idet... |
1509 |
ide_tape_discard_merge_buffer(drive, 1); |
1da177e4c Linux-2.6.12-rc2 |
1510 |
} |
f64eee7bb ide-tape: remove ... |
1511 |
|
49d8078ad ide-tape: fix IDE... |
1512 1513 |
if (minor < 128 && test_bit(ilog2(IDE_AFLAG_MEDIUM_PRESENT), &drive->atapi_flags)) |
1da177e4c Linux-2.6.12-rc2 |
1514 |
(void) idetape_rewind_tape(drive); |
49d8078ad ide-tape: fix IDE... |
1515 |
|
54abf37e4 ide-tape: remove ... |
1516 |
if (tape->chrdev_dir == IDETAPE_DIR_NONE) { |
1da177e4c Linux-2.6.12-rc2 |
1517 |
if (tape->door_locked == DOOR_LOCKED) { |
0578042db ide: add ide_set_... |
1518 |
if (!ide_set_media_lock(drive, tape->disk, 0)) |
385a4b878 ide-tape: add ide... |
1519 |
tape->door_locked = DOOR_UNLOCKED; |
1da177e4c Linux-2.6.12-rc2 |
1520 1521 |
} } |
49d8078ad ide-tape: fix IDE... |
1522 |
clear_bit(ilog2(IDE_AFLAG_BUSY), &drive->atapi_flags); |
1da177e4c Linux-2.6.12-rc2 |
1523 |
ide_tape_put(tape); |
cbba2fa7b ide-tape: remove ... |
1524 1525 |
mutex_unlock(&idetape_chrdev_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1526 1527 |
return 0; } |
6d29c8f0a ide-tape: remove ... |
1528 |
static void idetape_get_inquiry_results(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
1529 |
{ |
1da177e4c Linux-2.6.12-rc2 |
1530 |
idetape_tape_t *tape = drive->driver_data; |
d236d74c0 ide-tape: convert... |
1531 |
struct ide_atapi_pc pc; |
41fa9f863 ide: decrease siz... |
1532 |
u8 pc_buf[256]; |
801bd32e2 ide-tape: fix ven... |
1533 |
char fw_rev[4], vendor_id[8], product_id[16]; |
6d29c8f0a ide-tape: remove ... |
1534 |
|
1da177e4c Linux-2.6.12-rc2 |
1535 |
idetape_create_inquiry_cmd(&pc); |
b13345f39 ide-atapi: add a ... |
1536 |
if (ide_queue_pc_tail(drive, tape->disk, &pc, pc_buf, pc.req_xfer)) { |
6d29c8f0a ide-tape: remove ... |
1537 1538 1539 |
printk(KERN_ERR "ide-tape: %s: can't get INQUIRY results ", tape->name); |
1da177e4c Linux-2.6.12-rc2 |
1540 1541 |
return; } |
b13345f39 ide-atapi: add a ... |
1542 1543 1544 |
memcpy(vendor_id, &pc_buf[8], 8); memcpy(product_id, &pc_buf[16], 16); memcpy(fw_rev, &pc_buf[32], 4); |
41f81d545 ide-tape: struct ... |
1545 |
|
801bd32e2 ide-tape: fix ven... |
1546 1547 1548 |
ide_fixstring(vendor_id, 8, 0); ide_fixstring(product_id, 16, 0); ide_fixstring(fw_rev, 4, 0); |
41f81d545 ide-tape: struct ... |
1549 |
|
801bd32e2 ide-tape: fix ven... |
1550 1551 |
printk(KERN_INFO "ide-tape: %s <-> %s: %.8s %.16s rev %.4s ", |
41f81d545 ide-tape: struct ... |
1552 |
drive->name, tape->name, vendor_id, product_id, fw_rev); |
1da177e4c Linux-2.6.12-rc2 |
1553 1554 1555 |
} /* |
b64220132 ide-tape: remove ... |
1556 1557 |
* Ask the tape about its various parameters. In particular, we will adjust our * data transfer buffer size to the recommended value as returned by the tape. |
1da177e4c Linux-2.6.12-rc2 |
1558 |
*/ |
5a04cfa91 ide-tape: cleanup... |
1559 |
static void idetape_get_mode_sense_results(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
1560 1561 |
{ idetape_tape_t *tape = drive->driver_data; |
d236d74c0 ide-tape: convert... |
1562 |
struct ide_atapi_pc pc; |
b13345f39 ide-atapi: add a ... |
1563 |
u8 buf[24], *caps; |
b64220132 ide-tape: remove ... |
1564 |
u8 speed, max_speed; |
47314fa42 ide-tape: remove ... |
1565 |
|
1da177e4c Linux-2.6.12-rc2 |
1566 |
idetape_create_mode_sense_cmd(&pc, IDETAPE_CAPABILITIES_PAGE); |
b13345f39 ide-atapi: add a ... |
1567 |
if (ide_queue_pc_tail(drive, tape->disk, &pc, buf, pc.req_xfer)) { |
b64220132 ide-tape: remove ... |
1568 1569 1570 |
printk(KERN_ERR "ide-tape: Can't get tape parameters - assuming" " some default values "); |
54bb2074c ide-tape: struct ... |
1571 |
tape->blk_size = 512; |
b64220132 ide-tape: remove ... |
1572 1573 1574 |
put_unaligned(52, (u16 *)&tape->caps[12]); put_unaligned(540, (u16 *)&tape->caps[14]); put_unaligned(6*52, (u16 *)&tape->caps[16]); |
1da177e4c Linux-2.6.12-rc2 |
1575 1576 |
return; } |
b13345f39 ide-atapi: add a ... |
1577 |
caps = buf + 4 + buf[3]; |
b64220132 ide-tape: remove ... |
1578 1579 |
/* convert to host order and save for later use */ |
cd740ab0f ide: ide-tape.c s... |
1580 1581 |
speed = be16_to_cpup((__be16 *)&caps[14]); max_speed = be16_to_cpup((__be16 *)&caps[8]); |
1da177e4c Linux-2.6.12-rc2 |
1582 |
|
cd740ab0f ide: ide-tape.c s... |
1583 1584 1585 1586 |
*(u16 *)&caps[8] = max_speed; *(u16 *)&caps[12] = be16_to_cpup((__be16 *)&caps[12]); *(u16 *)&caps[14] = speed; *(u16 *)&caps[16] = be16_to_cpup((__be16 *)&caps[16]); |
1da177e4c Linux-2.6.12-rc2 |
1587 |
|
b64220132 ide-tape: remove ... |
1588 1589 1590 1591 |
if (!speed) { printk(KERN_INFO "ide-tape: %s: invalid tape speed " "(assuming 650KB/sec) ", drive->name); |
cd740ab0f ide: ide-tape.c s... |
1592 |
*(u16 *)&caps[14] = 650; |
1da177e4c Linux-2.6.12-rc2 |
1593 |
} |
b64220132 ide-tape: remove ... |
1594 1595 1596 1597 |
if (!max_speed) { printk(KERN_INFO "ide-tape: %s: invalid max_speed " "(assuming 650KB/sec) ", drive->name); |
cd740ab0f ide: ide-tape.c s... |
1598 |
*(u16 *)&caps[8] = 650; |
1da177e4c Linux-2.6.12-rc2 |
1599 |
} |
b64220132 ide-tape: remove ... |
1600 |
memcpy(&tape->caps, caps, 20); |
0578042db ide: add ide_set_... |
1601 1602 1603 |
/* device lacks locking support according to capabilities page */ if ((caps[6] & 1) == 0) |
42619d35c ide: remove IDE_A... |
1604 |
drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING; |
0578042db ide: add ide_set_... |
1605 |
|
b64220132 ide-tape: remove ... |
1606 |
if (caps[7] & 0x02) |
54bb2074c ide-tape: struct ... |
1607 |
tape->blk_size = 512; |
b64220132 ide-tape: remove ... |
1608 |
else if (caps[7] & 0x04) |
54bb2074c ide-tape: struct ... |
1609 |
tape->blk_size = 1024; |
1da177e4c Linux-2.6.12-rc2 |
1610 |
} |
7662d046d ide: move IDE set... |
1611 |
#ifdef CONFIG_IDE_PROC_FS |
8185d5aa9 ide: /proc/ide/hd... |
1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 |
#define ide_tape_devset_get(name, field) \ static int get_##name(ide_drive_t *drive) \ { \ idetape_tape_t *tape = drive->driver_data; \ return tape->field; \ } #define ide_tape_devset_set(name, field) \ static int set_##name(ide_drive_t *drive, int arg) \ { \ idetape_tape_t *tape = drive->driver_data; \ tape->field = arg; \ return 0; \ } |
92f1f8fd8 ide: Remove ide_s... |
1626 |
#define ide_tape_devset_rw_field(_name, _field) \ |
8185d5aa9 ide: /proc/ide/hd... |
1627 1628 |
ide_tape_devset_get(_name, _field) \ ide_tape_devset_set(_name, _field) \ |
92f1f8fd8 ide: Remove ide_s... |
1629 |
IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name) |
8185d5aa9 ide: /proc/ide/hd... |
1630 |
|
92f1f8fd8 ide: Remove ide_s... |
1631 |
#define ide_tape_devset_r_field(_name, _field) \ |
8185d5aa9 ide: /proc/ide/hd... |
1632 |
ide_tape_devset_get(_name, _field) \ |
92f1f8fd8 ide: Remove ide_s... |
1633 |
IDE_DEVSET(_name, 0, get_##_name, NULL) |
8185d5aa9 ide: /proc/ide/hd... |
1634 1635 1636 1637 1638 |
static int mulf_tdsc(ide_drive_t *drive) { return 1000; } static int divf_tdsc(ide_drive_t *drive) { return HZ; } static int divf_buffer(ide_drive_t *drive) { return 2; } static int divf_buffer_size(ide_drive_t *drive) { return 1024; } |
97100fc81 ide: add device f... |
1639 |
ide_devset_rw_flag(dsc_overlap, IDE_DFLAG_DSC_OVERLAP); |
92f1f8fd8 ide: Remove ide_s... |
1640 |
|
92f1f8fd8 ide: Remove ide_s... |
1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 |
ide_tape_devset_rw_field(tdsc, best_dsc_rw_freq); ide_tape_devset_r_field(avg_speed, avg_speed); ide_tape_devset_r_field(speed, caps[14]); ide_tape_devset_r_field(buffer, caps[16]); ide_tape_devset_r_field(buffer_size, buffer_size); static const struct ide_proc_devset idetape_settings[] = { __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), |
92f1f8fd8 ide: Remove ide_s... |
1652 1653 1654 1655 |
__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, mulf_tdsc, divf_tdsc), |
71bfc7a7c ide: NULL noise: ... |
1656 |
{ NULL }, |
8185d5aa9 ide: /proc/ide/hd... |
1657 |
}; |
7662d046d ide: move IDE set... |
1658 |
#endif |
1da177e4c Linux-2.6.12-rc2 |
1659 1660 |
/* |
3c98bf347 ide-tape: cleanup... |
1661 |
* The function below is called to: |
1da177e4c Linux-2.6.12-rc2 |
1662 |
* |
3c98bf347 ide-tape: cleanup... |
1663 1664 1665 1666 |
* 1. Initialize our various state variables. * 2. Ask the tape for its capabilities. * 3. Allocate a buffer which will be used for data transfer. The buffer size * is chosen based on the recommendation which we received in step 2. |
1da177e4c Linux-2.6.12-rc2 |
1667 |
* |
3c98bf347 ide-tape: cleanup... |
1668 1669 |
* Note that at this point ide.c already assigned us an irq, so that we can * queue requests here and wait for their completion. |
1da177e4c Linux-2.6.12-rc2 |
1670 |
*/ |
5a04cfa91 ide-tape: cleanup... |
1671 |
static void idetape_setup(ide_drive_t *drive, idetape_tape_t *tape, int minor) |
1da177e4c Linux-2.6.12-rc2 |
1672 |
{ |
83042b241 ide-tape: remove ... |
1673 |
unsigned long t; |
1da177e4c Linux-2.6.12-rc2 |
1674 |
int speed; |
f73850a30 ide-tape: mv tape... |
1675 |
int buffer_size; |
b64220132 ide-tape: remove ... |
1676 |
u16 *ctl = (u16 *)&tape->caps[12]; |
1da177e4c Linux-2.6.12-rc2 |
1677 |
|
e972d7027 ide-tape: convert... |
1678 1679 1680 |
ide_debug_log(IDE_DBG_FUNC, "minor: %d", minor); drive->pc_callback = ide_tape_callback; |
776bb0270 ide-tape: use dri... |
1681 |
|
97100fc81 ide: add device f... |
1682 |
drive->dev_flags |= IDE_DFLAG_DSC_OVERLAP; |
4166c1993 ide: add IDE_HFLA... |
1683 1684 1685 1686 |
if (drive->hwif->host_flags & IDE_HFLAG_NO_DSC) { printk(KERN_INFO "ide-tape: %s: disabling DSC overlap ", tape->name); |
97100fc81 ide: add device f... |
1687 |
drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP; |
1da177e4c Linux-2.6.12-rc2 |
1688 |
} |
97100fc81 ide: add device f... |
1689 |
|
1da177e4c Linux-2.6.12-rc2 |
1690 |
/* Seagate Travan drives do not support DSC overlap. */ |
4dde4492d ide: make drive->... |
1691 |
if (strstr((char *)&drive->id[ATA_ID_PROD], "Seagate STT3401")) |
97100fc81 ide: add device f... |
1692 |
drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP; |
1da177e4c Linux-2.6.12-rc2 |
1693 1694 1695 1696 |
tape->minor = minor; tape->name[0] = 'h'; tape->name[1] = 't'; tape->name[2] = '0' + minor; |
54abf37e4 ide-tape: remove ... |
1697 |
tape->chrdev_dir = IDETAPE_DIR_NONE; |
4dde4492d ide: make drive->... |
1698 |
|
1da177e4c Linux-2.6.12-rc2 |
1699 1700 |
idetape_get_inquiry_results(drive); idetape_get_mode_sense_results(drive); |
3cffb9ce4 ide-tape: remove ... |
1701 |
ide_tape_get_bsize_from_bdesc(drive); |
1da177e4c Linux-2.6.12-rc2 |
1702 |
tape->user_bs_factor = 1; |
f73850a30 ide-tape: mv tape... |
1703 1704 |
tape->buffer_size = *ctl * tape->blk_size; while (tape->buffer_size > 0xffff) { |
1da177e4c Linux-2.6.12-rc2 |
1705 1706 |
printk(KERN_NOTICE "ide-tape: decreasing stage size "); |
b64220132 ide-tape: remove ... |
1707 |
*ctl /= 2; |
f73850a30 ide-tape: mv tape... |
1708 |
tape->buffer_size = *ctl * tape->blk_size; |
1da177e4c Linux-2.6.12-rc2 |
1709 |
} |
f73850a30 ide-tape: mv tape... |
1710 |
buffer_size = tape->buffer_size; |
1da177e4c Linux-2.6.12-rc2 |
1711 |
|
83042b241 ide-tape: remove ... |
1712 |
/* select the "best" DSC read/write polling freq */ |
b64220132 ide-tape: remove ... |
1713 |
speed = max(*(u16 *)&tape->caps[14], *(u16 *)&tape->caps[8]); |
1da177e4c Linux-2.6.12-rc2 |
1714 |
|
f73850a30 ide-tape: mv tape... |
1715 |
t = (IDETAPE_FIFO_THRESHOLD * tape->buffer_size * HZ) / (speed * 1000); |
1da177e4c Linux-2.6.12-rc2 |
1716 1717 |
/* |
3c98bf347 ide-tape: cleanup... |
1718 1719 |
* Ensure that the number we got makes sense; limit it within * IDETAPE_DSC_RW_MIN and IDETAPE_DSC_RW_MAX. |
1da177e4c Linux-2.6.12-rc2 |
1720 |
*/ |
a792bd5a4 ide-tape: use cla... |
1721 1722 |
tape->best_dsc_rw_freq = clamp_t(unsigned long, t, IDETAPE_DSC_RW_MIN, IDETAPE_DSC_RW_MAX); |
1da177e4c Linux-2.6.12-rc2 |
1723 |
printk(KERN_INFO "ide-tape: %s <-> %s: %dKBps, %d*%dkB buffer, " |
83042b241 ide-tape: remove ... |
1724 1725 |
"%lums tDSC%s ", |
b64220132 ide-tape: remove ... |
1726 |
drive->name, tape->name, *(u16 *)&tape->caps[14], |
f73850a30 ide-tape: mv tape... |
1727 1728 |
(*(u16 *)&tape->caps[16] * 512) / tape->buffer_size, tape->buffer_size / 1024, |
54bb2074c ide-tape: struct ... |
1729 |
tape->best_dsc_rw_freq * 1000 / HZ, |
97100fc81 ide: add device f... |
1730 |
(drive->dev_flags & IDE_DFLAG_USING_DMA) ? ", DMA" : ""); |
1da177e4c Linux-2.6.12-rc2 |
1731 |
|
1e874f448 ide: call ide_pro... |
1732 |
ide_proc_register_driver(drive, tape->driver); |
1da177e4c Linux-2.6.12-rc2 |
1733 |
} |
4031bbe4b [PATCH] Add ide_b... |
1734 |
static void ide_tape_remove(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
1735 1736 |
{ idetape_tape_t *tape = drive->driver_data; |
1da177e4c Linux-2.6.12-rc2 |
1737 |
|
7662d046d ide: move IDE set... |
1738 |
ide_proc_unregister_driver(drive, tape->driver); |
8fed43684 ide: fix refcount... |
1739 |
device_del(&tape->dev); |
1da177e4c Linux-2.6.12-rc2 |
1740 |
ide_unregister_region(tape->disk); |
8fed43684 ide: fix refcount... |
1741 1742 1743 |
mutex_lock(&idetape_ref_mutex); put_device(&tape->dev); mutex_unlock(&idetape_ref_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1744 |
} |
8fed43684 ide: fix refcount... |
1745 |
static void ide_tape_release(struct device *dev) |
1da177e4c Linux-2.6.12-rc2 |
1746 |
{ |
8fed43684 ide: fix refcount... |
1747 |
struct ide_tape_obj *tape = to_ide_drv(dev, ide_tape_obj); |
1da177e4c Linux-2.6.12-rc2 |
1748 1749 |
ide_drive_t *drive = tape->drive; struct gendisk *g = tape->disk; |
963da55c4 ide-tape: kill id... |
1750 |
BUG_ON(tape->valid); |
8604affde [PATCH] convert I... |
1751 |
|
97100fc81 ide: add device f... |
1752 |
drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP; |
1da177e4c Linux-2.6.12-rc2 |
1753 |
drive->driver_data = NULL; |
dbc1272ed IDE: Convert from... |
1754 |
device_destroy(idetape_sysfs_class, MKDEV(IDETAPE_MAJOR, tape->minor)); |
5a04cfa91 ide-tape: cleanup... |
1755 1756 |
device_destroy(idetape_sysfs_class, MKDEV(IDETAPE_MAJOR, tape->minor + 128)); |
1da177e4c Linux-2.6.12-rc2 |
1757 1758 1759 1760 1761 |
idetape_devs[tape->minor] = NULL; g->private_data = NULL; put_disk(g); kfree(tape); } |
ecfd80e4a ide: make /proc/i... |
1762 |
#ifdef CONFIG_IDE_PROC_FS |
6d703a81a ide: convert to -... |
1763 |
static int idetape_name_proc_show(struct seq_file *m, void *v) |
1da177e4c Linux-2.6.12-rc2 |
1764 |
{ |
6d703a81a ide: convert to -... |
1765 |
ide_drive_t *drive = (ide_drive_t *) m->private; |
1da177e4c Linux-2.6.12-rc2 |
1766 |
idetape_tape_t *tape = drive->driver_data; |
1da177e4c Linux-2.6.12-rc2 |
1767 |
|
6d703a81a ide: convert to -... |
1768 1769 1770 1771 1772 1773 1774 1775 |
seq_printf(m, "%s ", 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); |
1da177e4c Linux-2.6.12-rc2 |
1776 |
} |
6d703a81a ide: convert to -... |
1777 1778 1779 1780 1781 1782 1783 |
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, }; |
1da177e4c Linux-2.6.12-rc2 |
1784 |
static ide_proc_entry_t idetape_proc[] = { |
6d703a81a ide: convert to -... |
1785 1786 1787 |
{ "capacity", S_IFREG|S_IRUGO, &ide_capacity_proc_fops }, { "name", S_IFREG|S_IRUGO, &idetape_name_proc_fops }, {} |
1da177e4c Linux-2.6.12-rc2 |
1788 |
}; |
79cb38039 ide: allow device... |
1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 |
static ide_proc_entry_t *ide_tape_proc_entries(ide_drive_t *drive) { return idetape_proc; } static const struct ide_proc_devset *ide_tape_proc_devsets(ide_drive_t *drive) { return idetape_settings; } |
1da177e4c Linux-2.6.12-rc2 |
1799 |
#endif |
4031bbe4b [PATCH] Add ide_b... |
1800 |
static int ide_tape_probe(ide_drive_t *); |
1da177e4c Linux-2.6.12-rc2 |
1801 |
|
7f3c868ba ide: remove ide_d... |
1802 |
static struct ide_driver idetape_driver = { |
8604affde [PATCH] convert I... |
1803 |
.gen_driver = { |
4ef3b8f4a [PATCH] ide: remo... |
1804 |
.owner = THIS_MODULE, |
8604affde [PATCH] convert I... |
1805 1806 |
.name = "ide-tape", .bus = &ide_bus_type, |
8604affde [PATCH] convert I... |
1807 |
}, |
4031bbe4b [PATCH] Add ide_b... |
1808 1809 |
.probe = ide_tape_probe, .remove = ide_tape_remove, |
1da177e4c Linux-2.6.12-rc2 |
1810 |
.version = IDETAPE_VERSION, |
1da177e4c Linux-2.6.12-rc2 |
1811 |
.do_request = idetape_do_request, |
7662d046d ide: move IDE set... |
1812 |
#ifdef CONFIG_IDE_PROC_FS |
79cb38039 ide: allow device... |
1813 1814 |
.proc_entries = ide_tape_proc_entries, .proc_devsets = ide_tape_proc_devsets, |
7662d046d ide: move IDE set... |
1815 |
#endif |
1da177e4c Linux-2.6.12-rc2 |
1816 |
}; |
3c98bf347 ide-tape: cleanup... |
1817 |
/* Our character device supporting functions, passed to register_chrdev. */ |
2b8693c06 [PATCH] mark stru... |
1818 |
static const struct file_operations idetape_fops = { |
1da177e4c Linux-2.6.12-rc2 |
1819 1820 1821 |
.owner = THIS_MODULE, .read = idetape_chrdev_read, .write = idetape_chrdev_write, |
05227adff ide_tape: kill of... |
1822 |
.unlocked_ioctl = idetape_chrdev_ioctl, |
1da177e4c Linux-2.6.12-rc2 |
1823 1824 |
.open = idetape_chrdev_open, .release = idetape_chrdev_release, |
6038f373a llseek: automatic... |
1825 |
.llseek = noop_llseek, |
1da177e4c Linux-2.6.12-rc2 |
1826 |
}; |
a4600f813 [PATCH] switch id... |
1827 |
static int idetape_open(struct block_device *bdev, fmode_t mode) |
1da177e4c Linux-2.6.12-rc2 |
1828 |
{ |
6e9624b8c block: push down ... |
1829 |
struct ide_tape_obj *tape; |
2a48fc0ab block: autoconver... |
1830 |
mutex_lock(&ide_tape_mutex); |
6e9624b8c block: push down ... |
1831 |
tape = ide_tape_get(bdev->bd_disk, false, 0); |
2a48fc0ab block: autoconver... |
1832 |
mutex_unlock(&ide_tape_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1833 |
|
5a04cfa91 ide-tape: cleanup... |
1834 |
if (!tape) |
1da177e4c Linux-2.6.12-rc2 |
1835 |
return -ENXIO; |
1da177e4c Linux-2.6.12-rc2 |
1836 1837 |
return 0; } |
a4600f813 [PATCH] switch id... |
1838 |
static int idetape_release(struct gendisk *disk, fmode_t mode) |
1da177e4c Linux-2.6.12-rc2 |
1839 |
{ |
5aeddf907 ide: unify conver... |
1840 |
struct ide_tape_obj *tape = ide_drv_g(disk, ide_tape_obj); |
1da177e4c Linux-2.6.12-rc2 |
1841 |
|
2a48fc0ab block: autoconver... |
1842 |
mutex_lock(&ide_tape_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1843 |
ide_tape_put(tape); |
2a48fc0ab block: autoconver... |
1844 |
mutex_unlock(&ide_tape_mutex); |
6e9624b8c block: push down ... |
1845 |
|
1da177e4c Linux-2.6.12-rc2 |
1846 1847 |
return 0; } |
a4600f813 [PATCH] switch id... |
1848 |
static int idetape_ioctl(struct block_device *bdev, fmode_t mode, |
1da177e4c Linux-2.6.12-rc2 |
1849 1850 |
unsigned int cmd, unsigned long arg) { |
5aeddf907 ide: unify conver... |
1851 |
struct ide_tape_obj *tape = ide_drv_g(bdev->bd_disk, ide_tape_obj); |
1da177e4c Linux-2.6.12-rc2 |
1852 |
ide_drive_t *drive = tape->drive; |
8a6cfeb6d block: push down ... |
1853 |
int err; |
2a48fc0ab block: autoconver... |
1854 |
mutex_lock(&ide_tape_mutex); |
8a6cfeb6d block: push down ... |
1855 |
err = generic_ide_ioctl(drive, bdev, cmd, arg); |
1da177e4c Linux-2.6.12-rc2 |
1856 1857 |
if (err == -EINVAL) err = idetape_blkdev_ioctl(drive, cmd, arg); |
2a48fc0ab block: autoconver... |
1858 |
mutex_unlock(&ide_tape_mutex); |
8a6cfeb6d block: push down ... |
1859 |
|
1da177e4c Linux-2.6.12-rc2 |
1860 1861 |
return err; } |
83d5cde47 const: make block... |
1862 |
static const struct block_device_operations idetape_block_ops = { |
1da177e4c Linux-2.6.12-rc2 |
1863 |
.owner = THIS_MODULE, |
a4600f813 [PATCH] switch id... |
1864 1865 |
.open = idetape_open, .release = idetape_release, |
8a6cfeb6d block: push down ... |
1866 |
.ioctl = idetape_ioctl, |
1da177e4c Linux-2.6.12-rc2 |
1867 |
}; |
4031bbe4b [PATCH] Add ide_b... |
1868 |
static int ide_tape_probe(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
1869 1870 1871 1872 |
{ idetape_tape_t *tape; struct gendisk *g; int minor; |
e972d7027 ide-tape: convert... |
1873 1874 1875 |
ide_debug_log(IDE_DBG_FUNC, "enter"); if (!strstr(DRV_NAME, drive->driver_req)) |
1da177e4c Linux-2.6.12-rc2 |
1876 |
goto failed; |
2a924662b ide: remove needl... |
1877 |
|
1da177e4c Linux-2.6.12-rc2 |
1878 1879 |
if (drive->media != ide_tape) goto failed; |
2a924662b ide: remove needl... |
1880 |
|
97100fc81 ide: add device f... |
1881 1882 |
if ((drive->dev_flags & IDE_DFLAG_ID_READ) && ide_check_atapi_device(drive, DRV_NAME) == 0) { |
5a04cfa91 ide-tape: cleanup... |
1883 1884 1885 |
printk(KERN_ERR "ide-tape: %s: not supported by this version of" " the driver ", drive->name); |
1da177e4c Linux-2.6.12-rc2 |
1886 1887 |
goto failed; } |
5a04cfa91 ide-tape: cleanup... |
1888 |
tape = kzalloc(sizeof(idetape_tape_t), GFP_KERNEL); |
1da177e4c Linux-2.6.12-rc2 |
1889 |
if (tape == NULL) { |
5a04cfa91 ide-tape: cleanup... |
1890 1891 1892 |
printk(KERN_ERR "ide-tape: %s: Can't allocate a tape struct ", drive->name); |
1da177e4c Linux-2.6.12-rc2 |
1893 1894 1895 1896 1897 1898 1899 1900 |
goto failed; } g = alloc_disk(1 << PARTN_BITS); if (!g) goto out_free_tape; ide_init_disk(g, drive); |
8fed43684 ide: fix refcount... |
1901 1902 1903 1904 1905 1906 |
tape->dev.parent = &drive->gendev; tape->dev.release = ide_tape_release; dev_set_name(&tape->dev, dev_name(&drive->gendev)); if (device_register(&tape->dev)) goto out_free_disk; |
1da177e4c Linux-2.6.12-rc2 |
1907 1908 1909 1910 1911 1912 1913 1914 |
tape->drive = drive; tape->driver = &idetape_driver; tape->disk = g; g->private_data = &tape->driver; drive->driver_data = tape; |
cf8b8975c [PATCH] sem2mutex... |
1915 |
mutex_lock(&idetape_ref_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1916 1917 1918 |
for (minor = 0; idetape_devs[minor]; minor++) ; idetape_devs[minor] = tape; |
cf8b8975c [PATCH] sem2mutex... |
1919 |
mutex_unlock(&idetape_ref_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1920 1921 |
idetape_setup(drive, tape, minor); |
3ee074bf4 device create: id... |
1922 1923 1924 1925 1926 |
device_create(idetape_sysfs_class, &drive->gendev, MKDEV(IDETAPE_MAJOR, minor), NULL, "%s", tape->name); device_create(idetape_sysfs_class, &drive->gendev, MKDEV(IDETAPE_MAJOR, minor + 128), NULL, "n%s", tape->name); |
d5dee80ad [PATCH] add sysfs... |
1927 |
|
1da177e4c Linux-2.6.12-rc2 |
1928 1929 1930 1931 |
g->fops = &idetape_block_ops; ide_register_region(g); return 0; |
8604affde [PATCH] convert I... |
1932 |
|
8fed43684 ide: fix refcount... |
1933 1934 |
out_free_disk: put_disk(g); |
1da177e4c Linux-2.6.12-rc2 |
1935 1936 1937 |
out_free_tape: kfree(tape); failed: |
8604affde [PATCH] convert I... |
1938 |
return -ENODEV; |
1da177e4c Linux-2.6.12-rc2 |
1939 |
} |
5a04cfa91 ide-tape: cleanup... |
1940 |
static void __exit idetape_exit(void) |
1da177e4c Linux-2.6.12-rc2 |
1941 |
{ |
8604affde [PATCH] convert I... |
1942 |
driver_unregister(&idetape_driver.gen_driver); |
d5dee80ad [PATCH] add sysfs... |
1943 |
class_destroy(idetape_sysfs_class); |
1da177e4c Linux-2.6.12-rc2 |
1944 1945 |
unregister_chrdev(IDETAPE_MAJOR, "ht"); } |
17514e8a6 [PATCH] ide: add ... |
1946 |
static int __init idetape_init(void) |
1da177e4c Linux-2.6.12-rc2 |
1947 |
{ |
d5dee80ad [PATCH] add sysfs... |
1948 1949 1950 1951 1952 1953 1954 1955 1956 |
int error = 1; idetape_sysfs_class = class_create(THIS_MODULE, "ide_tape"); if (IS_ERR(idetape_sysfs_class)) { idetape_sysfs_class = NULL; printk(KERN_ERR "Unable to create sysfs class for ide tapes "); error = -EBUSY; goto out; } |
1da177e4c Linux-2.6.12-rc2 |
1957 |
if (register_chrdev(IDETAPE_MAJOR, "ht", &idetape_fops)) { |
5a04cfa91 ide-tape: cleanup... |
1958 1959 1960 |
printk(KERN_ERR "ide-tape: Failed to register chrdev" " interface "); |
d5dee80ad [PATCH] add sysfs... |
1961 1962 |
error = -EBUSY; goto out_free_class; |
1da177e4c Linux-2.6.12-rc2 |
1963 |
} |
d5dee80ad [PATCH] add sysfs... |
1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 |
error = driver_register(&idetape_driver.gen_driver); if (error) goto out_free_driver; return 0; out_free_driver: driver_unregister(&idetape_driver.gen_driver); out_free_class: class_destroy(idetape_sysfs_class); out: return error; |
1da177e4c Linux-2.6.12-rc2 |
1977 |
} |
263756ec2 [PATCH] ide: MODA... |
1978 |
MODULE_ALIAS("ide:*m-tape*"); |
1da177e4c Linux-2.6.12-rc2 |
1979 1980 1981 |
module_init(idetape_init); module_exit(idetape_exit); MODULE_ALIAS_CHARDEV_MAJOR(IDETAPE_MAJOR); |
9c1457688 ide-tape: collect... |
1982 1983 |
MODULE_DESCRIPTION("ATAPI Streaming TAPE Driver"); MODULE_LICENSE("GPL"); |