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drivers/ide/ide-tape.c
54.9 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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scsi_req(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) - scsi_req(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 = |
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(blk_rq_bytes(rq) - scsi_req(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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if (pc->error) { uptodate = 0; err = pc->error; } |
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} |
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scsi_req(rq)->result = err; |
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349 |
|
03a2faaea ide: return reque... |
350 |
return uptodate; |
1da177e4c Linux-2.6.12-rc2 |
351 |
} |
1da177e4c Linux-2.6.12-rc2 |
352 |
/* |
3c98bf347 ide-tape: cleanup... |
353 |
* Postpone the current request so that ide.c will be able to service requests |
b65fac32c ide: merge ide_hw... |
354 |
* from another device on the same port while we are polling for DSC. |
1da177e4c Linux-2.6.12-rc2 |
355 |
*/ |
6f3848ac2 ide-tape: fix han... |
356 |
static void ide_tape_stall_queue(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
357 358 |
{ idetape_tape_t *tape = drive->driver_data; |
e972d7027 ide-tape: convert... |
359 |
ide_debug_log(IDE_DBG_FUNC, "cmd: 0x%x, dsc_poll_freq: %lu", |
6f3848ac2 ide-tape: fix han... |
360 |
drive->hwif->rq->cmd[0], tape->dsc_poll_freq); |
8004a8c97 ide-tape: refacto... |
361 |
|
6f3848ac2 ide-tape: fix han... |
362 |
tape->postponed_rq = true; |
b65fac32c ide: merge ide_hw... |
363 |
|
54bb2074c ide-tape: struct ... |
364 |
ide_stall_queue(drive, tape->dsc_poll_freq); |
1da177e4c Linux-2.6.12-rc2 |
365 |
} |
74e63e74e ide-tape: factor ... |
366 367 368 369 370 371 372 373 374 |
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... |
375 |
ide_tape_stall_queue(drive); |
74e63e74e ide-tape: factor ... |
376 |
} |
1da177e4c Linux-2.6.12-rc2 |
377 |
/* |
3c98bf347 ide-tape: cleanup... |
378 |
* Packet Command Interface |
1da177e4c Linux-2.6.12-rc2 |
379 |
* |
2b9efba48 ide: add pointer ... |
380 |
* The current Packet Command is available in drive->pc, and will not change |
3c98bf347 ide-tape: cleanup... |
381 382 |
* 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 |
383 |
* |
3c98bf347 ide-tape: cleanup... |
384 |
* The handling will be done in three stages: |
1da177e4c Linux-2.6.12-rc2 |
385 |
* |
b788ee9c6 ide: use do_rw_ta... |
386 |
* 1. ide_tape_issue_pc will send the packet command to the drive, and will set |
aa5d2de7b ide: make ide_pc_... |
387 |
* the interrupt handler to ide_pc_intr. |
1da177e4c Linux-2.6.12-rc2 |
388 |
* |
aa5d2de7b ide: make ide_pc_... |
389 |
* 2. On each interrupt, ide_pc_intr will be called. This step will be |
3c98bf347 ide-tape: cleanup... |
390 |
* repeated until the device signals us that no more interrupts will be issued. |
1da177e4c Linux-2.6.12-rc2 |
391 |
* |
3c98bf347 ide-tape: cleanup... |
392 393 394 395 396 397 398 |
* 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 |
399 |
* |
3c98bf347 ide-tape: cleanup... |
400 401 |
* 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 |
402 |
* |
3c98bf347 ide-tape: cleanup... |
403 |
* 4. When the packet command is finished, it will be checked for errors. |
1da177e4c Linux-2.6.12-rc2 |
404 |
* |
3c98bf347 ide-tape: cleanup... |
405 406 407 |
* 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 |
408 |
* |
3c98bf347 ide-tape: cleanup... |
409 410 411 |
* 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 |
412 |
*/ |
1da177e4c Linux-2.6.12-rc2 |
413 |
|
b788ee9c6 ide: use do_rw_ta... |
414 415 416 |
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 |
417 |
{ |
1da177e4c Linux-2.6.12-rc2 |
418 |
idetape_tape_t *tape = drive->driver_data; |
dfb7e621f ide-atapi: switch... |
419 |
struct request *rq = drive->hwif->rq; |
1da177e4c Linux-2.6.12-rc2 |
420 |
|
5e2040fd0 ide: move ->faile... |
421 422 |
if (drive->failed_pc == NULL && pc->c[0] != REQUEST_SENSE) drive->failed_pc = pc; |
2b9efba48 ide: add pointer ... |
423 |
|
1da177e4c Linux-2.6.12-rc2 |
424 |
/* Set the current packet command */ |
2b9efba48 ide: add pointer ... |
425 |
drive->pc = pc; |
1da177e4c Linux-2.6.12-rc2 |
426 427 |
if (pc->retries > IDETAPE_MAX_PC_RETRIES || |
346331f82 ide-tape: remove ... |
428 |
(pc->flags & PC_FLAG_ABORT)) { |
b3071d190 ide-atapi,tape,fl... |
429 |
|
1da177e4c Linux-2.6.12-rc2 |
430 |
/* |
3c98bf347 ide-tape: cleanup... |
431 432 433 |
* 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 |
434 |
*/ |
346331f82 ide-tape: remove ... |
435 |
if (!(pc->flags & PC_FLAG_ABORT)) { |
90699ce2b ide-tape: use gen... |
436 |
if (!(pc->c[0] == TEST_UNIT_READY && |
1da177e4c Linux-2.6.12-rc2 |
437 438 439 440 441 442 443 444 445 446 447 |
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... |
448 |
pc->error = IDE_DRV_ERROR_GENERAL; |
1da177e4c Linux-2.6.12-rc2 |
449 |
} |
b3071d190 ide-atapi,tape,fl... |
450 |
|
5e2040fd0 ide: move ->faile... |
451 |
drive->failed_pc = NULL; |
b14c72127 ide: drop dsc_han... |
452 |
drive->pc_callback(drive, 0); |
2a842acab block: introduce ... |
453 |
ide_complete_rq(drive, BLK_STS_IOERR, blk_rq_bytes(rq)); |
92f5daff2 ide-tape: make pc... |
454 |
return ide_stopped; |
1da177e4c Linux-2.6.12-rc2 |
455 |
} |
e972d7027 ide-tape: convert... |
456 457 |
ide_debug_log(IDE_DBG_SENSE, "retry #%d, cmd: 0x%02x", pc->retries, pc->c[0]); |
1da177e4c Linux-2.6.12-rc2 |
458 459 |
pc->retries++; |
1da177e4c Linux-2.6.12-rc2 |
460 |
|
b788ee9c6 ide: use do_rw_ta... |
461 |
return ide_issue_pc(drive, cmd); |
1da177e4c Linux-2.6.12-rc2 |
462 |
} |
3c98bf347 ide-tape: cleanup... |
463 |
/* A mode sense command is used to "sense" tape parameters. */ |
d236d74c0 ide-tape: convert... |
464 |
static void idetape_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code) |
1da177e4c Linux-2.6.12-rc2 |
465 |
{ |
7bf7420a3 ide: add ide_init... |
466 |
ide_init_pc(pc); |
90699ce2b ide-tape: use gen... |
467 |
pc->c[0] = MODE_SENSE; |
1da177e4c Linux-2.6.12-rc2 |
468 |
if (page_code != IDETAPE_BLOCK_DESCRIPTOR) |
3c98bf347 ide-tape: cleanup... |
469 470 |
/* DBD = 1 - Don't return block descriptors */ pc->c[1] = 8; |
1da177e4c Linux-2.6.12-rc2 |
471 472 473 474 475 476 477 478 479 |
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... |
480 481 |
/* We will just discard data in that case */ pc->c[4] = 255; |
1da177e4c Linux-2.6.12-rc2 |
482 |
if (page_code == IDETAPE_BLOCK_DESCRIPTOR) |
d236d74c0 ide-tape: convert... |
483 |
pc->req_xfer = 12; |
1da177e4c Linux-2.6.12-rc2 |
484 |
else if (page_code == IDETAPE_CAPABILITIES_PAGE) |
d236d74c0 ide-tape: convert... |
485 |
pc->req_xfer = 24; |
1da177e4c Linux-2.6.12-rc2 |
486 |
else |
d236d74c0 ide-tape: convert... |
487 |
pc->req_xfer = 50; |
1da177e4c Linux-2.6.12-rc2 |
488 |
} |
5a04cfa91 ide-tape: cleanup... |
489 |
static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
490 |
{ |
b73c7ee25 ide: add ->read_s... |
491 |
ide_hwif_t *hwif = drive->hwif; |
1da177e4c Linux-2.6.12-rc2 |
492 |
idetape_tape_t *tape = drive->driver_data; |
2b9efba48 ide: add pointer ... |
493 |
struct ide_atapi_pc *pc = drive->pc; |
22c525b97 ide: remove ata_s... |
494 |
u8 stat; |
1da177e4c Linux-2.6.12-rc2 |
495 |
|
374e042c3 ide: add struct i... |
496 |
stat = hwif->tp_ops->read_status(hwif); |
c47137a99 ide: add ide_read... |
497 |
|
3a7d24841 ide: use ATA_* de... |
498 499 |
if (stat & ATA_DSC) { if (stat & ATA_ERR) { |
1da177e4c Linux-2.6.12-rc2 |
500 |
/* Error detected */ |
90699ce2b ide-tape: use gen... |
501 |
if (pc->c[0] != TEST_UNIT_READY) |
1da177e4c Linux-2.6.12-rc2 |
502 503 504 |
printk(KERN_ERR "ide-tape: %s: I/O error, ", tape->name); /* Retry operation */ |
6b544fcc8 ide-atapi: conver... |
505 |
ide_retry_pc(drive); |
258ec4113 ide-tape: make id... |
506 |
return ide_stopped; |
1da177e4c Linux-2.6.12-rc2 |
507 508 |
} pc->error = 0; |
1da177e4c Linux-2.6.12-rc2 |
509 |
} else { |
c152cc1a9 ide: use ->end_re... |
510 |
pc->error = IDE_DRV_ERROR_GENERAL; |
5e2040fd0 ide: move ->faile... |
511 |
drive->failed_pc = NULL; |
1da177e4c Linux-2.6.12-rc2 |
512 |
} |
b14c72127 ide: drop dsc_han... |
513 |
drive->pc_callback(drive, 0); |
1da177e4c Linux-2.6.12-rc2 |
514 515 |
return ide_stopped; } |
cd2abbfec ide-tape: unify i... |
516 |
static void ide_tape_create_rw_cmd(idetape_tape_t *tape, |
0014c75be ide-tape: pass pa... |
517 518 |
struct ide_atapi_pc *pc, struct request *rq, u8 opcode) |
1da177e4c Linux-2.6.12-rc2 |
519 |
{ |
10c0b3437 ide-tape: fix pot... |
520 |
unsigned int length = blk_rq_sectors(rq) / (tape->blk_size >> 9); |
0014c75be ide-tape: pass pa... |
521 |
|
7bf7420a3 ide: add ide_init... |
522 |
ide_init_pc(pc); |
860ff5ecb ide-tape: use gen... |
523 |
put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]); |
1da177e4c Linux-2.6.12-rc2 |
524 |
pc->c[1] = 1; |
19f52a784 ide-atapi: remove... |
525 526 |
if (blk_rq_bytes(rq) == tape->buffer_size) |
5e3310958 ide-{floppy,tape}... |
527 |
pc->flags |= PC_FLAG_DMA_OK; |
1da177e4c Linux-2.6.12-rc2 |
528 |
|
963da55c4 ide-tape: kill id... |
529 |
if (opcode == READ_6) |
cd2abbfec ide-tape: unify i... |
530 |
pc->c[0] = READ_6; |
963da55c4 ide-tape: kill id... |
531 |
else if (opcode == WRITE_6) { |
cd2abbfec ide-tape: unify i... |
532 533 |
pc->c[0] = WRITE_6; pc->flags |= PC_FLAG_WRITING; |
cd2abbfec ide-tape: unify i... |
534 |
} |
0014c75be ide-tape: pass pa... |
535 |
|
82ed4db49 block: split scsi... |
536 |
memcpy(scsi_req(rq)->cmd, pc->c, 12); |
1da177e4c Linux-2.6.12-rc2 |
537 |
} |
1da177e4c Linux-2.6.12-rc2 |
538 539 540 |
static ide_startstop_t idetape_do_request(ide_drive_t *drive, struct request *rq, sector_t block) { |
b73c7ee25 ide: add ->read_s... |
541 |
ide_hwif_t *hwif = drive->hwif; |
1da177e4c Linux-2.6.12-rc2 |
542 |
idetape_tape_t *tape = drive->driver_data; |
d236d74c0 ide-tape: convert... |
543 |
struct ide_atapi_pc *pc = NULL; |
b788ee9c6 ide: use do_rw_ta... |
544 |
struct ide_cmd cmd; |
82ed4db49 block: split scsi... |
545 |
struct scsi_request *req = scsi_req(rq); |
22c525b97 ide: remove ata_s... |
546 |
u8 stat; |
1da177e4c Linux-2.6.12-rc2 |
547 |
|
e972d7027 ide-tape: convert... |
548 |
ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, sector: %llu, nr_sectors: %u", |
82ed4db49 block: split scsi... |
549 |
req->cmd[0], (unsigned long long)blk_rq_pos(rq), |
e972d7027 ide-tape: convert... |
550 |
blk_rq_sectors(rq)); |
1da177e4c Linux-2.6.12-rc2 |
551 |
|
aebf526b5 block: fold cmd_t... |
552 |
BUG_ON(!blk_rq_is_private(rq)); |
2f5a8e80f ide: don't abuse ... |
553 554 |
BUG_ON(ide_req(rq)->type != ATA_PRIV_MISC && ide_req(rq)->type != ATA_PRIV_SENSE); |
1da177e4c Linux-2.6.12-rc2 |
555 |
|
3c98bf347 ide-tape: cleanup... |
556 |
/* Retry a failed packet command */ |
5e2040fd0 ide: move ->faile... |
557 558 |
if (drive->failed_pc && drive->pc->c[0] == REQUEST_SENSE) { pc = drive->failed_pc; |
28c7214bd ide: add PC_FLAG_... |
559 560 |
goto out; } |
5a04cfa91 ide-tape: cleanup... |
561 |
|
1da177e4c Linux-2.6.12-rc2 |
562 563 564 565 |
/* * If the tape is still busy, postpone our request and service * the other device meanwhile. */ |
374e042c3 ide: add struct i... |
566 |
stat = hwif->tp_ops->read_status(hwif); |
1da177e4c Linux-2.6.12-rc2 |
567 |
|
97100fc81 ide: add device f... |
568 |
if ((drive->dev_flags & IDE_DFLAG_DSC_OVERLAP) == 0 && |
82ed4db49 block: split scsi... |
569 |
(req->cmd[13] & REQ_IDETAPE_PC2) == 0) |
626542ca2 ide-tape: change ... |
570 |
drive->atapi_flags |= IDE_AFLAG_IGNORE_DSC; |
1da177e4c Linux-2.6.12-rc2 |
571 |
|
97100fc81 ide: add device f... |
572 |
if (drive->dev_flags & IDE_DFLAG_POST_RESET) { |
626542ca2 ide-tape: change ... |
573 |
drive->atapi_flags |= IDE_AFLAG_IGNORE_DSC; |
97100fc81 ide: add device f... |
574 |
drive->dev_flags &= ~IDE_DFLAG_POST_RESET; |
1da177e4c Linux-2.6.12-rc2 |
575 |
} |
626542ca2 ide-tape: change ... |
576 577 |
if (!(drive->atapi_flags & IDE_AFLAG_IGNORE_DSC) && !(stat & ATA_DSC)) { |
6f3848ac2 ide-tape: fix han... |
578 |
if (!tape->postponed_rq) { |
1da177e4c Linux-2.6.12-rc2 |
579 |
tape->dsc_polling_start = jiffies; |
54bb2074c ide-tape: struct ... |
580 |
tape->dsc_poll_freq = tape->best_dsc_rw_freq; |
1da177e4c Linux-2.6.12-rc2 |
581 582 583 584 585 |
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); |
82ed4db49 block: split scsi... |
586 |
if (req->cmd[13] & REQ_IDETAPE_PC2) { |
1da177e4c Linux-2.6.12-rc2 |
587 588 589 590 591 |
idetape_media_access_finished(drive); return ide_stopped; } else { return ide_do_reset(drive); } |
5a04cfa91 ide-tape: cleanup... |
592 593 594 |
} else if (time_after(jiffies, tape->dsc_polling_start + IDETAPE_DSC_MA_THRESHOLD)) |
54bb2074c ide-tape: struct ... |
595 |
tape->dsc_poll_freq = IDETAPE_DSC_MA_SLOW; |
6f3848ac2 ide-tape: fix han... |
596 |
ide_tape_stall_queue(drive); |
1da177e4c Linux-2.6.12-rc2 |
597 |
return ide_stopped; |
6f3848ac2 ide-tape: fix han... |
598 |
} else { |
626542ca2 ide-tape: change ... |
599 |
drive->atapi_flags &= ~IDE_AFLAG_IGNORE_DSC; |
6f3848ac2 ide-tape: fix han... |
600 601 |
tape->postponed_rq = false; } |
626542ca2 ide-tape: change ... |
602 |
|
82ed4db49 block: split scsi... |
603 |
if (req->cmd[13] & REQ_IDETAPE_READ) { |
2e8a6f89d ide-{floppy,tape}... |
604 |
pc = &tape->queued_pc; |
0014c75be ide-tape: pass pa... |
605 |
ide_tape_create_rw_cmd(tape, pc, rq, READ_6); |
1da177e4c Linux-2.6.12-rc2 |
606 607 |
goto out; } |
82ed4db49 block: split scsi... |
608 |
if (req->cmd[13] & REQ_IDETAPE_WRITE) { |
2e8a6f89d ide-{floppy,tape}... |
609 |
pc = &tape->queued_pc; |
0014c75be ide-tape: pass pa... |
610 |
ide_tape_create_rw_cmd(tape, pc, rq, WRITE_6); |
1da177e4c Linux-2.6.12-rc2 |
611 612 |
goto out; } |
82ed4db49 block: split scsi... |
613 |
if (req->cmd[13] & REQ_IDETAPE_PC1) { |
22ce0a7cc ide: don't use re... |
614 |
pc = (struct ide_atapi_pc *)ide_req(rq)->special; |
82ed4db49 block: split scsi... |
615 616 |
req->cmd[13] &= ~(REQ_IDETAPE_PC1); req->cmd[13] |= REQ_IDETAPE_PC2; |
1da177e4c Linux-2.6.12-rc2 |
617 618 |
goto out; } |
82ed4db49 block: split scsi... |
619 |
if (req->cmd[13] & REQ_IDETAPE_PC2) { |
1da177e4c Linux-2.6.12-rc2 |
620 621 622 623 |
idetape_media_access_finished(drive); return ide_stopped; } BUG(); |
28c7214bd ide: add PC_FLAG_... |
624 |
|
f2e3ab52a ide-tape: convert... |
625 |
out: |
6b544fcc8 ide-atapi: conver... |
626 627 |
/* prepare sense request for this command */ ide_prep_sense(drive, rq); |
b788ee9c6 ide: use do_rw_ta... |
628 629 630 631 632 633 |
memset(&cmd, 0, sizeof(cmd)); if (rq_data_dir(rq)) cmd.tf_flags |= IDE_TFLAG_WRITE; cmd.rq = rq; |
dfb7e621f ide-atapi: switch... |
634 |
ide_init_sg_cmd(&cmd, blk_rq_bytes(rq)); |
5c4be5724 ide-cd,atapi: use... |
635 |
ide_map_sg(drive, &cmd); |
b788ee9c6 ide: use do_rw_ta... |
636 |
return ide_tape_issue_pc(drive, &cmd, pc); |
1da177e4c Linux-2.6.12-rc2 |
637 |
} |
1da177e4c Linux-2.6.12-rc2 |
638 |
/* |
3c98bf347 ide-tape: cleanup... |
639 640 |
* Write a filemark if write_filemark=1. Flush the device buffers without * writing a filemark otherwise. |
1da177e4c Linux-2.6.12-rc2 |
641 |
*/ |
5a04cfa91 ide-tape: cleanup... |
642 |
static void idetape_create_write_filemark_cmd(ide_drive_t *drive, |
d236d74c0 ide-tape: convert... |
643 |
struct ide_atapi_pc *pc, int write_filemark) |
1da177e4c Linux-2.6.12-rc2 |
644 |
{ |
7bf7420a3 ide: add ide_init... |
645 |
ide_init_pc(pc); |
90699ce2b ide-tape: use gen... |
646 |
pc->c[0] = WRITE_FILEMARKS; |
1da177e4c Linux-2.6.12-rc2 |
647 |
pc->c[4] = write_filemark; |
346331f82 ide-tape: remove ... |
648 |
pc->flags |= PC_FLAG_WAIT_FOR_DSC; |
1da177e4c Linux-2.6.12-rc2 |
649 |
} |
1da177e4c Linux-2.6.12-rc2 |
650 651 652 |
static int idetape_wait_ready(ide_drive_t *drive, unsigned long timeout) { idetape_tape_t *tape = drive->driver_data; |
2ac07d920 ide: add ide_queu... |
653 |
struct gendisk *disk = tape->disk; |
1da177e4c Linux-2.6.12-rc2 |
654 |
int load_attempted = 0; |
3c98bf347 ide-tape: cleanup... |
655 |
/* Wait for the tape to become ready */ |
49d8078ad ide-tape: fix IDE... |
656 |
set_bit(ilog2(IDE_AFLAG_MEDIUM_PRESENT), &drive->atapi_flags); |
1da177e4c Linux-2.6.12-rc2 |
657 658 |
timeout += jiffies; while (time_before(jiffies, timeout)) { |
de699ad59 ide: add ide_do_t... |
659 |
if (ide_do_test_unit_ready(drive, disk) == 0) |
1da177e4c Linux-2.6.12-rc2 |
660 661 |
return 0; if ((tape->sense_key == 2 && tape->asc == 4 && tape->ascq == 2) |
3c98bf347 ide-tape: cleanup... |
662 663 |
|| (tape->asc == 0x3A)) { /* no media */ |
1da177e4c Linux-2.6.12-rc2 |
664 665 |
if (load_attempted) return -ENOMEDIUM; |
0c8a6c7ae ide: add ide_do_s... |
666 |
ide_do_start_stop(drive, disk, IDETAPE_LU_LOAD_MASK); |
1da177e4c Linux-2.6.12-rc2 |
667 668 669 670 671 |
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: ... |
672 |
msleep(100); |
1da177e4c Linux-2.6.12-rc2 |
673 674 675 |
} return -EIO; } |
5a04cfa91 ide-tape: cleanup... |
676 |
static int idetape_flush_tape_buffers(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
677 |
{ |
2ac07d920 ide: add ide_queu... |
678 |
struct ide_tape_obj *tape = drive->driver_data; |
d236d74c0 ide-tape: convert... |
679 |
struct ide_atapi_pc pc; |
1da177e4c Linux-2.6.12-rc2 |
680 681 682 |
int rc; idetape_create_write_filemark_cmd(drive, &pc, 0); |
b13345f39 ide-atapi: add a ... |
683 |
rc = ide_queue_pc_tail(drive, tape->disk, &pc, NULL, 0); |
5a04cfa91 ide-tape: cleanup... |
684 |
if (rc) |
1da177e4c Linux-2.6.12-rc2 |
685 686 687 688 |
return rc; idetape_wait_ready(drive, 60 * 5 * HZ); return 0; } |
55ce3a129 ide-tape: fix REA... |
689 |
static int ide_tape_read_position(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
690 691 |
{ idetape_tape_t *tape = drive->driver_data; |
d236d74c0 ide-tape: convert... |
692 |
struct ide_atapi_pc pc; |
55ce3a129 ide-tape: fix REA... |
693 |
u8 buf[20]; |
1da177e4c Linux-2.6.12-rc2 |
694 |
|
e972d7027 ide-tape: convert... |
695 |
ide_debug_log(IDE_DBG_FUNC, "enter"); |
1da177e4c Linux-2.6.12-rc2 |
696 |
|
55ce3a129 ide-tape: fix REA... |
697 698 699 700 701 702 |
/* 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 |
703 |
return -1; |
55ce3a129 ide-tape: fix REA... |
704 705 |
if (!pc.error) { |
e972d7027 ide-tape: convert... |
706 |
ide_debug_log(IDE_DBG_FUNC, "BOP - %s", |
55ce3a129 ide-tape: fix REA... |
707 |
(buf[0] & 0x80) ? "Yes" : "No"); |
e972d7027 ide-tape: convert... |
708 |
ide_debug_log(IDE_DBG_FUNC, "EOP - %s", |
55ce3a129 ide-tape: fix REA... |
709 710 711 712 713 714 |
(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-... |
715 716 |
clear_bit(ilog2(IDE_AFLAG_ADDRESS_VALID), &drive->atapi_flags); |
55ce3a129 ide-tape: fix REA... |
717 718 |
return -1; } else { |
e972d7027 ide-tape: convert... |
719 720 |
ide_debug_log(IDE_DBG_FUNC, "Block Location: %u", be32_to_cpup((__be32 *)&buf[4])); |
55ce3a129 ide-tape: fix REA... |
721 722 723 |
tape->partition = buf[1]; tape->first_frame = be32_to_cpup((__be32 *)&buf[4]); |
8dcce4081 Merge branch 'bp-... |
724 725 |
set_bit(ilog2(IDE_AFLAG_ADDRESS_VALID), &drive->atapi_flags); |
55ce3a129 ide-tape: fix REA... |
726 727 728 729 |
} } return tape->first_frame; |
1da177e4c Linux-2.6.12-rc2 |
730 |
} |
d236d74c0 ide-tape: convert... |
731 732 |
static void idetape_create_locate_cmd(ide_drive_t *drive, struct ide_atapi_pc *pc, |
5a04cfa91 ide-tape: cleanup... |
733 |
unsigned int block, u8 partition, int skip) |
1da177e4c Linux-2.6.12-rc2 |
734 |
{ |
7bf7420a3 ide: add ide_init... |
735 |
ide_init_pc(pc); |
90699ce2b ide-tape: use gen... |
736 |
pc->c[0] = POSITION_TO_ELEMENT; |
1da177e4c Linux-2.6.12-rc2 |
737 |
pc->c[1] = 2; |
860ff5ecb ide-tape: use gen... |
738 |
put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[3]); |
1da177e4c Linux-2.6.12-rc2 |
739 |
pc->c[8] = partition; |
346331f82 ide-tape: remove ... |
740 |
pc->flags |= PC_FLAG_WAIT_FOR_DSC; |
1da177e4c Linux-2.6.12-rc2 |
741 |
} |
ec0fdb01f ide-tape: mv idet... |
742 |
static void __ide_tape_discard_merge_buffer(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
743 744 |
{ idetape_tape_t *tape = drive->driver_data; |
1da177e4c Linux-2.6.12-rc2 |
745 |
|
54abf37e4 ide-tape: remove ... |
746 |
if (tape->chrdev_dir != IDETAPE_DIR_READ) |
9798630a7 ide-tape: make __... |
747 |
return; |
1da177e4c Linux-2.6.12-rc2 |
748 |
|
49d8078ad ide-tape: fix IDE... |
749 |
clear_bit(ilog2(IDE_AFLAG_FILEMARK), &drive->atapi_flags); |
963da55c4 ide-tape: kill id... |
750 751 752 753 |
tape->valid = 0; if (tape->buf != NULL) { kfree(tape->buf); tape->buf = NULL; |
1da177e4c Linux-2.6.12-rc2 |
754 |
} |
54abf37e4 ide-tape: remove ... |
755 |
tape->chrdev_dir = IDETAPE_DIR_NONE; |
1da177e4c Linux-2.6.12-rc2 |
756 757 758 |
} /* |
3c98bf347 ide-tape: cleanup... |
759 760 761 762 |
* 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 |
763 |
*/ |
5a04cfa91 ide-tape: cleanup... |
764 765 |
static int idetape_position_tape(ide_drive_t *drive, unsigned int block, u8 partition, int skip) |
1da177e4c Linux-2.6.12-rc2 |
766 767 |
{ idetape_tape_t *tape = drive->driver_data; |
2ac07d920 ide: add ide_queu... |
768 |
struct gendisk *disk = tape->disk; |
55ce3a129 ide-tape: fix REA... |
769 |
int ret; |
d236d74c0 ide-tape: convert... |
770 |
struct ide_atapi_pc pc; |
1da177e4c Linux-2.6.12-rc2 |
771 |
|
54abf37e4 ide-tape: remove ... |
772 |
if (tape->chrdev_dir == IDETAPE_DIR_READ) |
ec0fdb01f ide-tape: mv idet... |
773 |
__ide_tape_discard_merge_buffer(drive); |
1da177e4c Linux-2.6.12-rc2 |
774 775 |
idetape_wait_ready(drive, 60 * 5 * HZ); idetape_create_locate_cmd(drive, &pc, block, partition, skip); |
55ce3a129 ide-tape: fix REA... |
776 777 778 |
ret = ide_queue_pc_tail(drive, disk, &pc, NULL, 0); if (ret) return ret; |
1da177e4c Linux-2.6.12-rc2 |
779 |
|
55ce3a129 ide-tape: fix REA... |
780 781 782 783 |
ret = ide_tape_read_position(drive); if (ret < 0) return ret; return 0; |
1da177e4c Linux-2.6.12-rc2 |
784 |
} |
ec0fdb01f ide-tape: mv idet... |
785 |
static void ide_tape_discard_merge_buffer(ide_drive_t *drive, |
5a04cfa91 ide-tape: cleanup... |
786 |
int restore_position) |
1da177e4c Linux-2.6.12-rc2 |
787 788 |
{ idetape_tape_t *tape = drive->driver_data; |
1da177e4c Linux-2.6.12-rc2 |
789 |
int seek, position; |
ec0fdb01f ide-tape: mv idet... |
790 |
__ide_tape_discard_merge_buffer(drive); |
1da177e4c Linux-2.6.12-rc2 |
791 |
if (restore_position) { |
55ce3a129 ide-tape: fix REA... |
792 |
position = ide_tape_read_position(drive); |
9798630a7 ide-tape: make __... |
793 |
seek = position > 0 ? position : 0; |
1da177e4c Linux-2.6.12-rc2 |
794 |
if (idetape_position_tape(drive, seek, 0, 0)) { |
5a04cfa91 ide-tape: cleanup... |
795 |
printk(KERN_INFO "ide-tape: %s: position_tape failed in" |
ec0fdb01f ide-tape: mv idet... |
796 797 |
" %s ", tape->name, __func__); |
1da177e4c Linux-2.6.12-rc2 |
798 799 800 801 802 803 |
return; } } } /* |
3c98bf347 ide-tape: cleanup... |
804 805 |
* Generate a read/write request for the block device interface and wait for it * to be serviced. |
1da177e4c Linux-2.6.12-rc2 |
806 |
*/ |
6bb11dd14 ide-tape: use byt... |
807 |
static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int size) |
1da177e4c Linux-2.6.12-rc2 |
808 809 |
{ idetape_tape_t *tape = drive->driver_data; |
64ea1b4ab ide-tape: convert... |
810 |
struct request *rq; |
21d9c5d22 ide-tape: use sta... |
811 |
int ret; |
1da177e4c Linux-2.6.12-rc2 |
812 |
|
e972d7027 ide-tape: convert... |
813 |
ide_debug_log(IDE_DBG_FUNC, "cmd: 0x%x, size: %d", cmd, size); |
21d9c5d22 ide-tape: use sta... |
814 |
BUG_ON(cmd != REQ_IDETAPE_READ && cmd != REQ_IDETAPE_WRITE); |
6bb11dd14 ide-tape: use byt... |
815 |
BUG_ON(size < 0 || size % tape->blk_size); |
8004a8c97 ide-tape: refacto... |
816 |
|
ff005a066 block: sanitize b... |
817 |
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, 0); |
2f5a8e80f ide: don't abuse ... |
818 |
ide_req(rq)->type = ATA_PRIV_MISC; |
82ed4db49 block: split scsi... |
819 |
scsi_req(rq)->cmd[13] = cmd; |
64ea1b4ab ide-tape: convert... |
820 |
rq->rq_disk = tape->disk; |
c9059598e Merge branch 'for... |
821 |
rq->__sector = tape->first_frame; |
21d9c5d22 ide-tape: use sta... |
822 823 |
if (size) { |
963da55c4 ide-tape: kill id... |
824 |
ret = blk_rq_map_kern(drive->queue, rq, tape->buf, size, |
0eb0b63c1 block: consistent... |
825 |
GFP_NOIO); |
21d9c5d22 ide-tape: use sta... |
826 827 828 |
if (ret) goto out_put; } |
64ea1b4ab ide-tape: convert... |
829 |
blk_execute_rq(drive->queue, tape->disk, rq, 0); |
963da55c4 ide-tape: kill id... |
830 |
/* calculate the number of transferred bytes and update buffer state */ |
82ed4db49 block: split scsi... |
831 |
size -= scsi_req(rq)->resid_len; |
963da55c4 ide-tape: kill id... |
832 |
tape->cur = tape->buf; |
21d9c5d22 ide-tape: use sta... |
833 |
if (cmd == REQ_IDETAPE_READ) |
963da55c4 ide-tape: kill id... |
834 835 836 |
tape->valid = size; else tape->valid = 0; |
1da177e4c Linux-2.6.12-rc2 |
837 |
|
21d9c5d22 ide-tape: use sta... |
838 |
ret = size; |
17d5363b8 scsi: introduce a... |
839 |
if (scsi_req(rq)->result == IDE_DRV_ERROR_GENERAL) |
21d9c5d22 ide-tape: use sta... |
840 |
ret = -EIO; |
21d9c5d22 ide-tape: use sta... |
841 842 |
out_put: blk_put_request(rq); |
64ea1b4ab ide-tape: convert... |
843 |
return ret; |
1da177e4c Linux-2.6.12-rc2 |
844 |
} |
d236d74c0 ide-tape: convert... |
845 |
static void idetape_create_inquiry_cmd(struct ide_atapi_pc *pc) |
1da177e4c Linux-2.6.12-rc2 |
846 |
{ |
7bf7420a3 ide: add ide_init... |
847 |
ide_init_pc(pc); |
90699ce2b ide-tape: use gen... |
848 |
pc->c[0] = INQUIRY; |
5a04cfa91 ide-tape: cleanup... |
849 |
pc->c[4] = 254; |
d236d74c0 ide-tape: convert... |
850 |
pc->req_xfer = 254; |
1da177e4c Linux-2.6.12-rc2 |
851 |
} |
d236d74c0 ide-tape: convert... |
852 853 |
static void idetape_create_rewind_cmd(ide_drive_t *drive, struct ide_atapi_pc *pc) |
1da177e4c Linux-2.6.12-rc2 |
854 |
{ |
7bf7420a3 ide: add ide_init... |
855 |
ide_init_pc(pc); |
90699ce2b ide-tape: use gen... |
856 |
pc->c[0] = REZERO_UNIT; |
346331f82 ide-tape: remove ... |
857 |
pc->flags |= PC_FLAG_WAIT_FOR_DSC; |
1da177e4c Linux-2.6.12-rc2 |
858 |
} |
d236d74c0 ide-tape: convert... |
859 |
static void idetape_create_erase_cmd(struct ide_atapi_pc *pc) |
1da177e4c Linux-2.6.12-rc2 |
860 |
{ |
7bf7420a3 ide: add ide_init... |
861 |
ide_init_pc(pc); |
90699ce2b ide-tape: use gen... |
862 |
pc->c[0] = ERASE; |
1da177e4c Linux-2.6.12-rc2 |
863 |
pc->c[1] = 1; |
346331f82 ide-tape: remove ... |
864 |
pc->flags |= PC_FLAG_WAIT_FOR_DSC; |
1da177e4c Linux-2.6.12-rc2 |
865 |
} |
d236d74c0 ide-tape: convert... |
866 |
static void idetape_create_space_cmd(struct ide_atapi_pc *pc, int count, u8 cmd) |
1da177e4c Linux-2.6.12-rc2 |
867 |
{ |
7bf7420a3 ide: add ide_init... |
868 |
ide_init_pc(pc); |
90699ce2b ide-tape: use gen... |
869 |
pc->c[0] = SPACE; |
860ff5ecb ide-tape: use gen... |
870 |
put_unaligned(cpu_to_be32(count), (unsigned int *) &pc->c[1]); |
1da177e4c Linux-2.6.12-rc2 |
871 |
pc->c[1] = cmd; |
346331f82 ide-tape: remove ... |
872 |
pc->flags |= PC_FLAG_WAIT_FOR_DSC; |
1da177e4c Linux-2.6.12-rc2 |
873 |
} |
d9df937af ide-tape: mv idet... |
874 |
static void ide_tape_flush_merge_buffer(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
875 876 |
{ idetape_tape_t *tape = drive->driver_data; |
55a5d291f ide-tape: remove ... |
877 |
|
54abf37e4 ide-tape: remove ... |
878 |
if (tape->chrdev_dir != IDETAPE_DIR_WRITE) { |
077e3bdb9 ide-tape: remove ... |
879 |
printk(KERN_ERR "ide-tape: bug: Trying to empty merge buffer" |
5a04cfa91 ide-tape: cleanup... |
880 881 |
" but we are not writing. "); |
1da177e4c Linux-2.6.12-rc2 |
882 883 |
return; } |
963da55c4 ide-tape: kill id... |
884 |
if (tape->buf) { |
6bb11dd14 ide-tape: use byt... |
885 886 887 |
size_t aligned = roundup(tape->valid, tape->blk_size); memset(tape->cur, 0, aligned - tape->valid); |
07bd9686c ide-tape: simplif... |
888 |
idetape_queue_rw_tail(drive, REQ_IDETAPE_WRITE, aligned); |
963da55c4 ide-tape: kill id... |
889 890 |
kfree(tape->buf); tape->buf = NULL; |
1da177e4c Linux-2.6.12-rc2 |
891 |
} |
54abf37e4 ide-tape: remove ... |
892 |
tape->chrdev_dir = IDETAPE_DIR_NONE; |
1da177e4c Linux-2.6.12-rc2 |
893 |
} |
88f1b941c ide-tape: unify r... |
894 |
static int idetape_init_rw(ide_drive_t *drive, int dir) |
1da177e4c Linux-2.6.12-rc2 |
895 896 |
{ idetape_tape_t *tape = drive->driver_data; |
88f1b941c ide-tape: unify r... |
897 |
int rc; |
1da177e4c Linux-2.6.12-rc2 |
898 |
|
88f1b941c ide-tape: unify r... |
899 |
BUG_ON(dir != IDETAPE_DIR_READ && dir != IDETAPE_DIR_WRITE); |
1da177e4c Linux-2.6.12-rc2 |
900 |
|
88f1b941c ide-tape: unify r... |
901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 |
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 |
939 940 |
} } |
5e69bd959 ide-tape: remove ... |
941 |
|
1da177e4c Linux-2.6.12-rc2 |
942 943 |
return 0; } |
5a04cfa91 ide-tape: cleanup... |
944 |
static void idetape_pad_zeros(ide_drive_t *drive, int bcount) |
1da177e4c Linux-2.6.12-rc2 |
945 946 |
{ idetape_tape_t *tape = drive->driver_data; |
963da55c4 ide-tape: kill id... |
947 948 |
memset(tape->buf, 0, tape->buffer_size); |
3c98bf347 ide-tape: cleanup... |
949 |
|
1da177e4c Linux-2.6.12-rc2 |
950 |
while (bcount) { |
963da55c4 ide-tape: kill id... |
951 |
unsigned int count = min(tape->buffer_size, bcount); |
1da177e4c Linux-2.6.12-rc2 |
952 |
|
6bb11dd14 ide-tape: use byt... |
953 |
idetape_queue_rw_tail(drive, REQ_IDETAPE_WRITE, count); |
1da177e4c Linux-2.6.12-rc2 |
954 |
bcount -= count; |
1da177e4c Linux-2.6.12-rc2 |
955 956 |
} } |
1da177e4c Linux-2.6.12-rc2 |
957 |
/* |
3c98bf347 ide-tape: cleanup... |
958 959 960 |
* Rewinds the tape to the Beginning Of the current Partition (BOP). We * currently support only one partition. */ |
5a04cfa91 ide-tape: cleanup... |
961 |
static int idetape_rewind_tape(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
962 |
{ |
2ac07d920 ide: add ide_queu... |
963 964 |
struct ide_tape_obj *tape = drive->driver_data; struct gendisk *disk = tape->disk; |
d236d74c0 ide-tape: convert... |
965 |
struct ide_atapi_pc pc; |
55ce3a129 ide-tape: fix REA... |
966 |
int ret; |
8004a8c97 ide-tape: refacto... |
967 |
|
e972d7027 ide-tape: convert... |
968 |
ide_debug_log(IDE_DBG_FUNC, "enter"); |
8004a8c97 ide-tape: refacto... |
969 |
|
1da177e4c Linux-2.6.12-rc2 |
970 |
idetape_create_rewind_cmd(drive, &pc); |
55ce3a129 ide-tape: fix REA... |
971 972 973 |
ret = ide_queue_pc_tail(drive, disk, &pc, NULL, 0); if (ret) return ret; |
1da177e4c Linux-2.6.12-rc2 |
974 |
|
55ce3a129 ide-tape: fix REA... |
975 976 977 |
ret = ide_tape_read_position(drive); if (ret < 0) return ret; |
1da177e4c Linux-2.6.12-rc2 |
978 979 |
return 0; } |
3c98bf347 ide-tape: cleanup... |
980 |
/* mtio.h compatible commands should be issued to the chrdev interface. */ |
5a04cfa91 ide-tape: cleanup... |
981 982 |
static int idetape_blkdev_ioctl(ide_drive_t *drive, unsigned int cmd, unsigned long arg) |
1da177e4c Linux-2.6.12-rc2 |
983 984 |
{ idetape_tape_t *tape = drive->driver_data; |
1da177e4c Linux-2.6.12-rc2 |
985 |
void __user *argp = (void __user *)arg; |
d59823fa4 ide-tape: remove ... |
986 987 988 989 990 |
struct idetape_config { int dsc_rw_frequency; int dsc_media_access_frequency; int nr_stages; } config; |
e972d7027 ide-tape: convert... |
991 |
ide_debug_log(IDE_DBG_FUNC, "cmd: 0x%04x", cmd); |
8004a8c97 ide-tape: refacto... |
992 |
|
1da177e4c Linux-2.6.12-rc2 |
993 |
switch (cmd) { |
5a04cfa91 ide-tape: cleanup... |
994 995 996 997 |
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... |
998 999 |
break; case 0x0350: |
2fc2111c2 ide-tape: Don't l... |
1000 |
memset(&config, 0, sizeof(config)); |
5a04cfa91 ide-tape: cleanup... |
1001 |
config.dsc_rw_frequency = (int) tape->best_dsc_rw_freq; |
83042b241 ide-tape: remove ... |
1002 |
config.nr_stages = 1; |
5a04cfa91 ide-tape: cleanup... |
1003 1004 1005 1006 1007 |
if (copy_to_user(argp, &config, sizeof(config))) return -EFAULT; break; default: return -EIO; |
1da177e4c Linux-2.6.12-rc2 |
1008 1009 1010 |
} return 0; } |
5a04cfa91 ide-tape: cleanup... |
1011 1012 |
static int idetape_space_over_filemarks(ide_drive_t *drive, short mt_op, int mt_count) |
1da177e4c Linux-2.6.12-rc2 |
1013 1014 |
{ idetape_tape_t *tape = drive->driver_data; |
2ac07d920 ide: add ide_queu... |
1015 |
struct gendisk *disk = tape->disk; |
d236d74c0 ide-tape: convert... |
1016 |
struct ide_atapi_pc pc; |
5a04cfa91 ide-tape: cleanup... |
1017 |
int retval, count = 0; |
b64220132 ide-tape: remove ... |
1018 |
int sprev = !!(tape->caps[4] & 0x20); |
1da177e4c Linux-2.6.12-rc2 |
1019 |
|
e972d7027 ide-tape: convert... |
1020 1021 |
ide_debug_log(IDE_DBG_FUNC, "mt_op: %d, mt_count: %d", mt_op, mt_count); |
1da177e4c Linux-2.6.12-rc2 |
1022 1023 1024 |
if (mt_count == 0) return 0; if (MTBSF == mt_op || MTBSFM == mt_op) { |
b64220132 ide-tape: remove ... |
1025 |
if (!sprev) |
1da177e4c Linux-2.6.12-rc2 |
1026 |
return -EIO; |
5a04cfa91 ide-tape: cleanup... |
1027 |
mt_count = -mt_count; |
1da177e4c Linux-2.6.12-rc2 |
1028 |
} |
54abf37e4 ide-tape: remove ... |
1029 |
if (tape->chrdev_dir == IDETAPE_DIR_READ) { |
963da55c4 ide-tape: kill id... |
1030 |
tape->valid = 0; |
49d8078ad ide-tape: fix IDE... |
1031 1032 |
if (test_and_clear_bit(ilog2(IDE_AFLAG_FILEMARK), &drive->atapi_flags)) |
1da177e4c Linux-2.6.12-rc2 |
1033 |
++count; |
ec0fdb01f ide-tape: mv idet... |
1034 |
ide_tape_discard_merge_buffer(drive, 0); |
1da177e4c Linux-2.6.12-rc2 |
1035 |
} |
1da177e4c Linux-2.6.12-rc2 |
1036 |
switch (mt_op) { |
5a04cfa91 ide-tape: cleanup... |
1037 1038 1039 1040 |
case MTFSF: case MTBSF: idetape_create_space_cmd(&pc, mt_count - count, IDETAPE_SPACE_OVER_FILEMARK); |
b13345f39 ide-atapi: add a ... |
1041 |
return ide_queue_pc_tail(drive, disk, &pc, NULL, 0); |
5a04cfa91 ide-tape: cleanup... |
1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 |
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 |
1057 1058 |
} } |
1da177e4c Linux-2.6.12-rc2 |
1059 |
/* |
3c98bf347 ide-tape: cleanup... |
1060 |
* Our character device read / write functions. |
1da177e4c Linux-2.6.12-rc2 |
1061 |
* |
3c98bf347 ide-tape: cleanup... |
1062 1063 1064 |
* 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 |
1065 |
* |
3c98bf347 ide-tape: cleanup... |
1066 1067 1068 1069 1070 1071 1072 |
* 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 |
1073 |
*/ |
5a04cfa91 ide-tape: cleanup... |
1074 1075 |
static ssize_t idetape_chrdev_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) |
1da177e4c Linux-2.6.12-rc2 |
1076 |
{ |
5aeddf907 ide: unify conver... |
1077 |
struct ide_tape_obj *tape = file->private_data; |
1da177e4c Linux-2.6.12-rc2 |
1078 |
ide_drive_t *drive = tape->drive; |
07bd9686c ide-tape: simplif... |
1079 |
size_t done = 0; |
dcd963796 [PATCH] idetape g... |
1080 |
ssize_t ret = 0; |
07bd9686c ide-tape: simplif... |
1081 |
int rc; |
1da177e4c Linux-2.6.12-rc2 |
1082 |
|
5b5e0928f lib/vsprintf.c: r... |
1083 |
ide_debug_log(IDE_DBG_FUNC, "count %zd", count); |
1da177e4c Linux-2.6.12-rc2 |
1084 |
|
54abf37e4 ide-tape: remove ... |
1085 |
if (tape->chrdev_dir != IDETAPE_DIR_READ) { |
49d8078ad ide-tape: fix IDE... |
1086 |
if (test_bit(ilog2(IDE_AFLAG_DETECT_BS), &drive->atapi_flags)) |
54bb2074c ide-tape: struct ... |
1087 1088 1089 |
if (count > tape->blk_size && (count % tape->blk_size) == 0) tape->user_bs_factor = count / tape->blk_size; |
1da177e4c Linux-2.6.12-rc2 |
1090 |
} |
07bd9686c ide-tape: simplif... |
1091 |
|
88f1b941c ide-tape: unify r... |
1092 |
rc = idetape_init_rw(drive, IDETAPE_DIR_READ); |
8d06bfadb ide-tape: shorten... |
1093 |
if (rc < 0) |
1da177e4c Linux-2.6.12-rc2 |
1094 |
return rc; |
07bd9686c ide-tape: simplif... |
1095 1096 1097 1098 1099 1100 1101 |
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... |
1102 1103 |
if (test_bit(ilog2(IDE_AFLAG_FILEMARK), &drive->atapi_flags)) |
07bd9686c ide-tape: simplif... |
1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 |
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... |
1114 |
ret = -EFAULT; |
07bd9686c ide-tape: simplif... |
1115 1116 1117 1118 |
tape->cur += todo; tape->valid -= todo; done += todo; |
1da177e4c Linux-2.6.12-rc2 |
1119 |
} |
07bd9686c ide-tape: simplif... |
1120 |
|
49d8078ad ide-tape: fix IDE... |
1121 |
if (!done && test_bit(ilog2(IDE_AFLAG_FILEMARK), &drive->atapi_flags)) { |
1da177e4c Linux-2.6.12-rc2 |
1122 1123 1124 |
idetape_space_over_filemarks(drive, MTFSF, 1); return 0; } |
dcd963796 [PATCH] idetape g... |
1125 |
|
07bd9686c ide-tape: simplif... |
1126 |
return ret ? ret : done; |
1da177e4c Linux-2.6.12-rc2 |
1127 |
} |
5a04cfa91 ide-tape: cleanup... |
1128 |
static ssize_t idetape_chrdev_write(struct file *file, const char __user *buf, |
1da177e4c Linux-2.6.12-rc2 |
1129 1130 |
size_t count, loff_t *ppos) { |
5aeddf907 ide: unify conver... |
1131 |
struct ide_tape_obj *tape = file->private_data; |
1da177e4c Linux-2.6.12-rc2 |
1132 |
ide_drive_t *drive = tape->drive; |
07bd9686c ide-tape: simplif... |
1133 |
size_t done = 0; |
dcd963796 [PATCH] idetape g... |
1134 |
ssize_t ret = 0; |
88f1b941c ide-tape: unify r... |
1135 |
int rc; |
1da177e4c Linux-2.6.12-rc2 |
1136 1137 1138 1139 |
/* The drive is write protected. */ if (tape->write_prot) return -EACCES; |
5b5e0928f lib/vsprintf.c: r... |
1140 |
ide_debug_log(IDE_DBG_FUNC, "count %zd", count); |
1da177e4c Linux-2.6.12-rc2 |
1141 1142 |
/* Initialize write operation */ |
88f1b941c ide-tape: unify r... |
1143 1144 1145 |
rc = idetape_init_rw(drive, IDETAPE_DIR_WRITE); if (rc < 0) return rc; |
07bd9686c ide-tape: simplif... |
1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 |
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... |
1160 |
ret = -EFAULT; |
07bd9686c ide-tape: simplif... |
1161 1162 1163 1164 |
tape->cur += todo; tape->valid += todo; done += todo; |
1da177e4c Linux-2.6.12-rc2 |
1165 |
} |
07bd9686c ide-tape: simplif... |
1166 1167 |
return ret ? ret : done; |
1da177e4c Linux-2.6.12-rc2 |
1168 |
} |
5a04cfa91 ide-tape: cleanup... |
1169 |
static int idetape_write_filemark(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
1170 |
{ |
2ac07d920 ide: add ide_queu... |
1171 |
struct ide_tape_obj *tape = drive->driver_data; |
d236d74c0 ide-tape: convert... |
1172 |
struct ide_atapi_pc pc; |
1da177e4c Linux-2.6.12-rc2 |
1173 1174 1175 |
/* Write a filemark */ idetape_create_write_filemark_cmd(drive, &pc, 1); |
b13345f39 ide-atapi: add a ... |
1176 |
if (ide_queue_pc_tail(drive, tape->disk, &pc, NULL, 0)) { |
1da177e4c Linux-2.6.12-rc2 |
1177 1178 1179 1180 1181 1182 1183 1184 |
printk(KERN_ERR "ide-tape: Couldn't write a filemark "); return -EIO; } return 0; } /* |
d99c9da21 ide-tape: remove ... |
1185 1186 |
* Called from idetape_chrdev_ioctl when the general mtio MTIOCTOP ioctl is * requested. |
1da177e4c Linux-2.6.12-rc2 |
1187 |
* |
d99c9da21 ide-tape: remove ... |
1188 1189 |
* 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 ... |
1190 |
* usually not supported. |
1da177e4c Linux-2.6.12-rc2 |
1191 |
* |
d99c9da21 ide-tape: remove ... |
1192 |
* The following commands are currently not supported: |
1da177e4c Linux-2.6.12-rc2 |
1193 |
* |
d99c9da21 ide-tape: remove ... |
1194 1195 |
* MTFSS, MTBSS, MTWSM, MTSETDENSITY, MTSETDRVBUFFER, MT_ST_BOOLEANS, * MT_ST_WRITE_THRESHOLD. |
1da177e4c Linux-2.6.12-rc2 |
1196 |
*/ |
d99c9da21 ide-tape: remove ... |
1197 |
static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count) |
1da177e4c Linux-2.6.12-rc2 |
1198 1199 |
{ idetape_tape_t *tape = drive->driver_data; |
2ac07d920 ide: add ide_queu... |
1200 |
struct gendisk *disk = tape->disk; |
d236d74c0 ide-tape: convert... |
1201 |
struct ide_atapi_pc pc; |
5a04cfa91 ide-tape: cleanup... |
1202 |
int i, retval; |
1da177e4c Linux-2.6.12-rc2 |
1203 |
|
e972d7027 ide-tape: convert... |
1204 1205 |
ide_debug_log(IDE_DBG_FUNC, "MTIOCTOP ioctl: mt_op: %d, mt_count: %d", mt_op, mt_count); |
5a04cfa91 ide-tape: cleanup... |
1206 |
|
1da177e4c Linux-2.6.12-rc2 |
1207 |
switch (mt_op) { |
5a04cfa91 ide-tape: cleanup... |
1208 1209 1210 1211 1212 1213 1214 1215 1216 |
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 |
1217 |
} |
5a04cfa91 ide-tape: cleanup... |
1218 |
|
1da177e4c Linux-2.6.12-rc2 |
1219 |
switch (mt_op) { |
5a04cfa91 ide-tape: cleanup... |
1220 1221 1222 |
case MTWEOF: if (tape->write_prot) return -EACCES; |
ec0fdb01f ide-tape: mv idet... |
1223 |
ide_tape_discard_merge_buffer(drive, 1); |
5a04cfa91 ide-tape: cleanup... |
1224 1225 1226 1227 1228 1229 1230 |
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... |
1231 |
ide_tape_discard_merge_buffer(drive, 0); |
5a04cfa91 ide-tape: cleanup... |
1232 1233 1234 1235 |
if (idetape_rewind_tape(drive)) return -EIO; return 0; case MTLOAD: |
ec0fdb01f ide-tape: mv idet... |
1236 |
ide_tape_discard_merge_buffer(drive, 0); |
0c8a6c7ae ide: add ide_do_s... |
1237 |
return ide_do_start_stop(drive, disk, IDETAPE_LU_LOAD_MASK); |
5a04cfa91 ide-tape: cleanup... |
1238 1239 1240 1241 1242 1243 1244 |
case MTUNLOAD: case MTOFFL: /* * If door is locked, attempt to unlock before * attempting to eject. */ if (tape->door_locked) { |
0578042db ide: add ide_set_... |
1245 |
if (!ide_set_media_lock(drive, disk, 0)) |
385a4b878 ide-tape: add ide... |
1246 |
tape->door_locked = DOOR_UNLOCKED; |
5a04cfa91 ide-tape: cleanup... |
1247 |
} |
ec0fdb01f ide-tape: mv idet... |
1248 |
ide_tape_discard_merge_buffer(drive, 0); |
0c8a6c7ae ide: add ide_do_s... |
1249 |
retval = ide_do_start_stop(drive, disk, !IDETAPE_LU_LOAD_MASK); |
5a04cfa91 ide-tape: cleanup... |
1250 |
if (!retval) |
49d8078ad ide-tape: fix IDE... |
1251 1252 |
clear_bit(ilog2(IDE_AFLAG_MEDIUM_PRESENT), &drive->atapi_flags); |
5a04cfa91 ide-tape: cleanup... |
1253 1254 |
return retval; case MTNOP: |
ec0fdb01f ide-tape: mv idet... |
1255 |
ide_tape_discard_merge_buffer(drive, 0); |
5a04cfa91 ide-tape: cleanup... |
1256 1257 |
return idetape_flush_tape_buffers(drive); case MTRETEN: |
ec0fdb01f ide-tape: mv idet... |
1258 |
ide_tape_discard_merge_buffer(drive, 0); |
0c8a6c7ae ide: add ide_do_s... |
1259 |
return ide_do_start_stop(drive, disk, |
5a04cfa91 ide-tape: cleanup... |
1260 |
IDETAPE_LU_RETENSION_MASK | IDETAPE_LU_LOAD_MASK); |
5a04cfa91 ide-tape: cleanup... |
1261 1262 |
case MTEOM: idetape_create_space_cmd(&pc, 0, IDETAPE_SPACE_TO_EOD); |
b13345f39 ide-atapi: add a ... |
1263 |
return ide_queue_pc_tail(drive, disk, &pc, NULL, 0); |
5a04cfa91 ide-tape: cleanup... |
1264 1265 1266 |
case MTERASE: (void)idetape_rewind_tape(drive); idetape_create_erase_cmd(&pc); |
b13345f39 ide-atapi: add a ... |
1267 |
return ide_queue_pc_tail(drive, disk, &pc, NULL, 0); |
5a04cfa91 ide-tape: cleanup... |
1268 1269 1270 1271 |
case MTSETBLK: if (mt_count) { if (mt_count < tape->blk_size || mt_count % tape->blk_size) |
1da177e4c Linux-2.6.12-rc2 |
1272 |
return -EIO; |
5a04cfa91 ide-tape: cleanup... |
1273 |
tape->user_bs_factor = mt_count / tape->blk_size; |
49d8078ad ide-tape: fix IDE... |
1274 1275 |
clear_bit(ilog2(IDE_AFLAG_DETECT_BS), &drive->atapi_flags); |
5a04cfa91 ide-tape: cleanup... |
1276 |
} else |
49d8078ad ide-tape: fix IDE... |
1277 1278 |
set_bit(ilog2(IDE_AFLAG_DETECT_BS), &drive->atapi_flags); |
5a04cfa91 ide-tape: cleanup... |
1279 1280 |
return 0; case MTSEEK: |
ec0fdb01f ide-tape: mv idet... |
1281 |
ide_tape_discard_merge_buffer(drive, 0); |
5a04cfa91 ide-tape: cleanup... |
1282 1283 1284 |
return idetape_position_tape(drive, mt_count * tape->user_bs_factor, tape->partition, 0); case MTSETPART: |
ec0fdb01f ide-tape: mv idet... |
1285 |
ide_tape_discard_merge_buffer(drive, 0); |
5a04cfa91 ide-tape: cleanup... |
1286 1287 1288 1289 |
return idetape_position_tape(drive, 0, mt_count, 0); case MTFSR: case MTBSR: case MTLOCK: |
0578042db ide: add ide_set_... |
1290 |
retval = ide_set_media_lock(drive, disk, 1); |
5a04cfa91 ide-tape: cleanup... |
1291 |
if (retval) |
1da177e4c Linux-2.6.12-rc2 |
1292 |
return retval; |
5a04cfa91 ide-tape: cleanup... |
1293 1294 1295 |
tape->door_locked = DOOR_EXPLICITLY_LOCKED; return 0; case MTUNLOCK: |
0578042db ide: add ide_set_... |
1296 |
retval = ide_set_media_lock(drive, disk, 0); |
5a04cfa91 ide-tape: cleanup... |
1297 1298 1299 1300 1301 1302 1303 1304 1305 |
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 |
1306 1307 1308 1309 |
} } /* |
d99c9da21 ide-tape: remove ... |
1310 1311 1312 |
* 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 |
1313 |
*/ |
05227adff ide_tape: kill of... |
1314 |
static long do_idetape_chrdev_ioctl(struct file *file, |
d99c9da21 ide-tape: remove ... |
1315 |
unsigned int cmd, unsigned long arg) |
1da177e4c Linux-2.6.12-rc2 |
1316 |
{ |
5aeddf907 ide: unify conver... |
1317 |
struct ide_tape_obj *tape = file->private_data; |
1da177e4c Linux-2.6.12-rc2 |
1318 1319 1320 1321 |
ide_drive_t *drive = tape->drive; struct mtop mtop; struct mtget mtget; struct mtpos mtpos; |
54bb2074c ide-tape: struct ... |
1322 |
int block_offset = 0, position = tape->first_frame; |
1da177e4c Linux-2.6.12-rc2 |
1323 |
void __user *argp = (void __user *)arg; |
e972d7027 ide-tape: convert... |
1324 |
ide_debug_log(IDE_DBG_FUNC, "cmd: 0x%x", cmd); |
1da177e4c Linux-2.6.12-rc2 |
1325 |
|
54abf37e4 ide-tape: remove ... |
1326 |
if (tape->chrdev_dir == IDETAPE_DIR_WRITE) { |
d9df937af ide-tape: mv idet... |
1327 |
ide_tape_flush_merge_buffer(drive); |
1da177e4c Linux-2.6.12-rc2 |
1328 1329 1330 |
idetape_flush_tape_buffers(drive); } if (cmd == MTIOCGET || cmd == MTIOCPOS) { |
963da55c4 ide-tape: kill id... |
1331 |
block_offset = tape->valid / |
54bb2074c ide-tape: struct ... |
1332 |
(tape->blk_size * tape->user_bs_factor); |
55ce3a129 ide-tape: fix REA... |
1333 |
position = ide_tape_read_position(drive); |
5a04cfa91 ide-tape: cleanup... |
1334 |
if (position < 0) |
1da177e4c Linux-2.6.12-rc2 |
1335 1336 1337 |
return -EIO; } switch (cmd) { |
5a04cfa91 ide-tape: cleanup... |
1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 |
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... |
1363 |
ide_tape_discard_merge_buffer(drive, 1); |
5a04cfa91 ide-tape: cleanup... |
1364 |
return idetape_blkdev_ioctl(drive, cmd, arg); |
1da177e4c Linux-2.6.12-rc2 |
1365 1366 |
} } |
05227adff ide_tape: kill of... |
1367 1368 1369 1370 |
static long idetape_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { long ret; |
2a48fc0ab block: autoconver... |
1371 |
mutex_lock(&ide_tape_mutex); |
05227adff ide_tape: kill of... |
1372 |
ret = do_idetape_chrdev_ioctl(file, cmd, arg); |
2a48fc0ab block: autoconver... |
1373 |
mutex_unlock(&ide_tape_mutex); |
05227adff ide_tape: kill of... |
1374 1375 |
return ret; } |
3cffb9ce4 ide-tape: remove ... |
1376 1377 1378 1379 1380 1381 1382 |
/* * 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... |
1383 |
struct ide_atapi_pc pc; |
837272b4f ide-tape/ide_tape... |
1384 |
u8 buf[12]; |
3cffb9ce4 ide-tape: remove ... |
1385 1386 |
idetape_create_mode_sense_cmd(&pc, IDETAPE_BLOCK_DESCRIPTOR); |
837272b4f ide-tape/ide_tape... |
1387 |
if (ide_queue_pc_tail(drive, tape->disk, &pc, buf, pc.req_xfer)) { |
3cffb9ce4 ide-tape: remove ... |
1388 1389 |
printk(KERN_ERR "ide-tape: Can't get block descriptor "); |
54bb2074c ide-tape: struct ... |
1390 |
if (tape->blk_size == 0) { |
3cffb9ce4 ide-tape: remove ... |
1391 1392 1393 |
printk(KERN_WARNING "ide-tape: Cannot deal with zero " "block size, assuming 32k "); |
54bb2074c ide-tape: struct ... |
1394 |
tape->blk_size = 32768; |
3cffb9ce4 ide-tape: remove ... |
1395 1396 1397 |
} return; } |
837272b4f ide-tape/ide_tape... |
1398 1399 1400 1401 |
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... |
1402 1403 1404 |
ide_debug_log(IDE_DBG_FUNC, "blk_size: %d, write_prot: %d", tape->blk_size, tape->drv_write_prot); |
3cffb9ce4 ide-tape: remove ... |
1405 |
} |
1da177e4c Linux-2.6.12-rc2 |
1406 |
|
5a04cfa91 ide-tape: cleanup... |
1407 |
static int idetape_chrdev_open(struct inode *inode, struct file *filp) |
1da177e4c Linux-2.6.12-rc2 |
1408 1409 1410 1411 |
{ unsigned int minor = iminor(inode), i = minor & ~0xc0; ide_drive_t *drive; idetape_tape_t *tape; |
1da177e4c Linux-2.6.12-rc2 |
1412 |
int retval; |
8004a8c97 ide-tape: refacto... |
1413 1414 |
if (i >= MAX_HWIFS * MAX_DRIVES) return -ENXIO; |
cbba2fa7b ide-tape: remove ... |
1415 |
mutex_lock(&idetape_chrdev_mutex); |
9d01e4cd7 ide-tape: fix pro... |
1416 |
tape = ide_tape_get(NULL, true, i); |
04f4ac9d1 ide-tape: cdev lo... |
1417 |
if (!tape) { |
cbba2fa7b ide-tape: remove ... |
1418 |
mutex_unlock(&idetape_chrdev_mutex); |
8004a8c97 ide-tape: refacto... |
1419 |
return -ENXIO; |
04f4ac9d1 ide-tape: cdev lo... |
1420 |
} |
8004a8c97 ide-tape: refacto... |
1421 |
|
e972d7027 ide-tape: convert... |
1422 1423 1424 1425 |
drive = tape->drive; filp->private_data = tape; ide_debug_log(IDE_DBG_FUNC, "enter"); |
8004a8c97 ide-tape: refacto... |
1426 |
|
1da177e4c Linux-2.6.12-rc2 |
1427 1428 1429 1430 1431 1432 |
/* * 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 |
1433 |
|
49d8078ad ide-tape: fix IDE... |
1434 |
if (test_and_set_bit(ilog2(IDE_AFLAG_BUSY), &drive->atapi_flags)) { |
1da177e4c Linux-2.6.12-rc2 |
1435 1436 1437 1438 1439 1440 |
retval = -EBUSY; goto out_put_tape; } retval = idetape_wait_ready(drive, 60 * HZ); if (retval) { |
49d8078ad ide-tape: fix IDE... |
1441 |
clear_bit(ilog2(IDE_AFLAG_BUSY), &drive->atapi_flags); |
1da177e4c Linux-2.6.12-rc2 |
1442 1443 1444 1445 |
printk(KERN_ERR "ide-tape: %s: drive not ready ", tape->name); goto out_put_tape; } |
79ca743f6 ide-tape: fix bui... |
1446 |
ide_tape_read_position(drive); |
49d8078ad ide-tape: fix IDE... |
1447 |
if (!test_bit(ilog2(IDE_AFLAG_ADDRESS_VALID), &drive->atapi_flags)) |
1da177e4c Linux-2.6.12-rc2 |
1448 |
(void)idetape_rewind_tape(drive); |
1da177e4c Linux-2.6.12-rc2 |
1449 |
/* Read block size and write protect status from drive. */ |
3cffb9ce4 ide-tape: remove ... |
1450 |
ide_tape_get_bsize_from_bdesc(drive); |
1da177e4c Linux-2.6.12-rc2 |
1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 |
/* 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... |
1462 |
clear_bit(ilog2(IDE_AFLAG_BUSY), &drive->atapi_flags); |
1da177e4c Linux-2.6.12-rc2 |
1463 1464 1465 1466 |
retval = -EROFS; goto out_put_tape; } } |
3c98bf347 ide-tape: cleanup... |
1467 |
/* Lock the tape drive door so user can't eject. */ |
54abf37e4 ide-tape: remove ... |
1468 |
if (tape->chrdev_dir == IDETAPE_DIR_NONE) { |
0578042db ide: add ide_set_... |
1469 |
if (!ide_set_media_lock(drive, tape->disk, 1)) { |
385a4b878 ide-tape: add ide... |
1470 1471 |
if (tape->door_locked != DOOR_EXPLICITLY_LOCKED) tape->door_locked = DOOR_LOCKED; |
1da177e4c Linux-2.6.12-rc2 |
1472 1473 |
} } |
cbba2fa7b ide-tape: remove ... |
1474 |
mutex_unlock(&idetape_chrdev_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1475 1476 1477 1478 |
return 0; out_put_tape: ide_tape_put(tape); |
cbba2fa7b ide-tape: remove ... |
1479 1480 |
mutex_unlock(&idetape_chrdev_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1481 1482 |
return retval; } |
5a04cfa91 ide-tape: cleanup... |
1483 |
static void idetape_write_release(ide_drive_t *drive, unsigned int minor) |
1da177e4c Linux-2.6.12-rc2 |
1484 1485 |
{ idetape_tape_t *tape = drive->driver_data; |
d9df937af ide-tape: mv idet... |
1486 |
ide_tape_flush_merge_buffer(drive); |
963da55c4 ide-tape: kill id... |
1487 1488 |
tape->buf = kmalloc(tape->buffer_size, GFP_KERNEL); if (tape->buf != NULL) { |
54bb2074c ide-tape: struct ... |
1489 1490 |
idetape_pad_zeros(drive, tape->blk_size * (tape->user_bs_factor - 1)); |
963da55c4 ide-tape: kill id... |
1491 1492 |
kfree(tape->buf); tape->buf = NULL; |
1da177e4c Linux-2.6.12-rc2 |
1493 1494 1495 1496 1497 |
} idetape_write_filemark(drive); idetape_flush_tape_buffers(drive); idetape_flush_tape_buffers(drive); } |
5a04cfa91 ide-tape: cleanup... |
1498 |
static int idetape_chrdev_release(struct inode *inode, struct file *filp) |
1da177e4c Linux-2.6.12-rc2 |
1499 |
{ |
5aeddf907 ide: unify conver... |
1500 |
struct ide_tape_obj *tape = filp->private_data; |
1da177e4c Linux-2.6.12-rc2 |
1501 |
ide_drive_t *drive = tape->drive; |
1da177e4c Linux-2.6.12-rc2 |
1502 |
unsigned int minor = iminor(inode); |
cbba2fa7b ide-tape: remove ... |
1503 |
mutex_lock(&idetape_chrdev_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1504 |
tape = drive->driver_data; |
8004a8c97 ide-tape: refacto... |
1505 |
|
e972d7027 ide-tape: convert... |
1506 |
ide_debug_log(IDE_DBG_FUNC, "enter"); |
1da177e4c Linux-2.6.12-rc2 |
1507 |
|
54abf37e4 ide-tape: remove ... |
1508 |
if (tape->chrdev_dir == IDETAPE_DIR_WRITE) |
1da177e4c Linux-2.6.12-rc2 |
1509 |
idetape_write_release(drive, minor); |
54abf37e4 ide-tape: remove ... |
1510 |
if (tape->chrdev_dir == IDETAPE_DIR_READ) { |
1da177e4c Linux-2.6.12-rc2 |
1511 |
if (minor < 128) |
ec0fdb01f ide-tape: mv idet... |
1512 |
ide_tape_discard_merge_buffer(drive, 1); |
1da177e4c Linux-2.6.12-rc2 |
1513 |
} |
f64eee7bb ide-tape: remove ... |
1514 |
|
49d8078ad ide-tape: fix IDE... |
1515 1516 |
if (minor < 128 && test_bit(ilog2(IDE_AFLAG_MEDIUM_PRESENT), &drive->atapi_flags)) |
1da177e4c Linux-2.6.12-rc2 |
1517 |
(void) idetape_rewind_tape(drive); |
49d8078ad ide-tape: fix IDE... |
1518 |
|
54abf37e4 ide-tape: remove ... |
1519 |
if (tape->chrdev_dir == IDETAPE_DIR_NONE) { |
1da177e4c Linux-2.6.12-rc2 |
1520 |
if (tape->door_locked == DOOR_LOCKED) { |
0578042db ide: add ide_set_... |
1521 |
if (!ide_set_media_lock(drive, tape->disk, 0)) |
385a4b878 ide-tape: add ide... |
1522 |
tape->door_locked = DOOR_UNLOCKED; |
1da177e4c Linux-2.6.12-rc2 |
1523 1524 |
} } |
49d8078ad ide-tape: fix IDE... |
1525 |
clear_bit(ilog2(IDE_AFLAG_BUSY), &drive->atapi_flags); |
1da177e4c Linux-2.6.12-rc2 |
1526 |
ide_tape_put(tape); |
cbba2fa7b ide-tape: remove ... |
1527 1528 |
mutex_unlock(&idetape_chrdev_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1529 1530 |
return 0; } |
6d29c8f0a ide-tape: remove ... |
1531 |
static void idetape_get_inquiry_results(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
1532 |
{ |
1da177e4c Linux-2.6.12-rc2 |
1533 |
idetape_tape_t *tape = drive->driver_data; |
d236d74c0 ide-tape: convert... |
1534 |
struct ide_atapi_pc pc; |
41fa9f863 ide: decrease siz... |
1535 |
u8 pc_buf[256]; |
801bd32e2 ide-tape: fix ven... |
1536 |
char fw_rev[4], vendor_id[8], product_id[16]; |
6d29c8f0a ide-tape: remove ... |
1537 |
|
1da177e4c Linux-2.6.12-rc2 |
1538 |
idetape_create_inquiry_cmd(&pc); |
b13345f39 ide-atapi: add a ... |
1539 |
if (ide_queue_pc_tail(drive, tape->disk, &pc, pc_buf, pc.req_xfer)) { |
6d29c8f0a ide-tape: remove ... |
1540 1541 1542 |
printk(KERN_ERR "ide-tape: %s: can't get INQUIRY results ", tape->name); |
1da177e4c Linux-2.6.12-rc2 |
1543 1544 |
return; } |
b13345f39 ide-atapi: add a ... |
1545 1546 1547 |
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 ... |
1548 |
|
801bd32e2 ide-tape: fix ven... |
1549 1550 1551 |
ide_fixstring(vendor_id, 8, 0); ide_fixstring(product_id, 16, 0); ide_fixstring(fw_rev, 4, 0); |
41f81d545 ide-tape: struct ... |
1552 |
|
801bd32e2 ide-tape: fix ven... |
1553 1554 |
printk(KERN_INFO "ide-tape: %s <-> %s: %.8s %.16s rev %.4s ", |
41f81d545 ide-tape: struct ... |
1555 |
drive->name, tape->name, vendor_id, product_id, fw_rev); |
1da177e4c Linux-2.6.12-rc2 |
1556 1557 1558 |
} /* |
b64220132 ide-tape: remove ... |
1559 1560 |
* 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 |
1561 |
*/ |
5a04cfa91 ide-tape: cleanup... |
1562 |
static void idetape_get_mode_sense_results(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
1563 1564 |
{ idetape_tape_t *tape = drive->driver_data; |
d236d74c0 ide-tape: convert... |
1565 |
struct ide_atapi_pc pc; |
b13345f39 ide-atapi: add a ... |
1566 |
u8 buf[24], *caps; |
b64220132 ide-tape: remove ... |
1567 |
u8 speed, max_speed; |
47314fa42 ide-tape: remove ... |
1568 |
|
1da177e4c Linux-2.6.12-rc2 |
1569 |
idetape_create_mode_sense_cmd(&pc, IDETAPE_CAPABILITIES_PAGE); |
b13345f39 ide-atapi: add a ... |
1570 |
if (ide_queue_pc_tail(drive, tape->disk, &pc, buf, pc.req_xfer)) { |
b64220132 ide-tape: remove ... |
1571 1572 1573 |
printk(KERN_ERR "ide-tape: Can't get tape parameters - assuming" " some default values "); |
54bb2074c ide-tape: struct ... |
1574 |
tape->blk_size = 512; |
b64220132 ide-tape: remove ... |
1575 1576 1577 |
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 |
1578 1579 |
return; } |
b13345f39 ide-atapi: add a ... |
1580 |
caps = buf + 4 + buf[3]; |
b64220132 ide-tape: remove ... |
1581 1582 |
/* convert to host order and save for later use */ |
cd740ab0f ide: ide-tape.c s... |
1583 1584 |
speed = be16_to_cpup((__be16 *)&caps[14]); max_speed = be16_to_cpup((__be16 *)&caps[8]); |
1da177e4c Linux-2.6.12-rc2 |
1585 |
|
cd740ab0f ide: ide-tape.c s... |
1586 1587 1588 1589 |
*(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 |
1590 |
|
b64220132 ide-tape: remove ... |
1591 1592 1593 1594 |
if (!speed) { printk(KERN_INFO "ide-tape: %s: invalid tape speed " "(assuming 650KB/sec) ", drive->name); |
cd740ab0f ide: ide-tape.c s... |
1595 |
*(u16 *)&caps[14] = 650; |
1da177e4c Linux-2.6.12-rc2 |
1596 |
} |
b64220132 ide-tape: remove ... |
1597 1598 1599 1600 |
if (!max_speed) { printk(KERN_INFO "ide-tape: %s: invalid max_speed " "(assuming 650KB/sec) ", drive->name); |
cd740ab0f ide: ide-tape.c s... |
1601 |
*(u16 *)&caps[8] = 650; |
1da177e4c Linux-2.6.12-rc2 |
1602 |
} |
b64220132 ide-tape: remove ... |
1603 |
memcpy(&tape->caps, caps, 20); |
0578042db ide: add ide_set_... |
1604 1605 1606 |
/* device lacks locking support according to capabilities page */ if ((caps[6] & 1) == 0) |
42619d35c ide: remove IDE_A... |
1607 |
drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING; |
0578042db ide: add ide_set_... |
1608 |
|
b64220132 ide-tape: remove ... |
1609 |
if (caps[7] & 0x02) |
54bb2074c ide-tape: struct ... |
1610 |
tape->blk_size = 512; |
b64220132 ide-tape: remove ... |
1611 |
else if (caps[7] & 0x04) |
54bb2074c ide-tape: struct ... |
1612 |
tape->blk_size = 1024; |
1da177e4c Linux-2.6.12-rc2 |
1613 |
} |
7662d046d ide: move IDE set... |
1614 |
#ifdef CONFIG_IDE_PROC_FS |
8185d5aa9 ide: /proc/ide/hd... |
1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 |
#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... |
1629 |
#define ide_tape_devset_rw_field(_name, _field) \ |
8185d5aa9 ide: /proc/ide/hd... |
1630 1631 |
ide_tape_devset_get(_name, _field) \ ide_tape_devset_set(_name, _field) \ |
92f1f8fd8 ide: Remove ide_s... |
1632 |
IDE_DEVSET(_name, DS_SYNC, get_##_name, set_##_name) |
8185d5aa9 ide: /proc/ide/hd... |
1633 |
|
92f1f8fd8 ide: Remove ide_s... |
1634 |
#define ide_tape_devset_r_field(_name, _field) \ |
8185d5aa9 ide: /proc/ide/hd... |
1635 |
ide_tape_devset_get(_name, _field) \ |
92f1f8fd8 ide: Remove ide_s... |
1636 |
IDE_DEVSET(_name, 0, get_##_name, NULL) |
8185d5aa9 ide: /proc/ide/hd... |
1637 1638 1639 1640 1641 |
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... |
1642 |
ide_devset_rw_flag(dsc_overlap, IDE_DFLAG_DSC_OVERLAP); |
92f1f8fd8 ide: Remove ide_s... |
1643 |
|
92f1f8fd8 ide: Remove ide_s... |
1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 |
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... |
1655 1656 1657 1658 |
__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: ... |
1659 |
{ NULL }, |
8185d5aa9 ide: /proc/ide/hd... |
1660 |
}; |
7662d046d ide: move IDE set... |
1661 |
#endif |
1da177e4c Linux-2.6.12-rc2 |
1662 1663 |
/* |
3c98bf347 ide-tape: cleanup... |
1664 |
* The function below is called to: |
1da177e4c Linux-2.6.12-rc2 |
1665 |
* |
3c98bf347 ide-tape: cleanup... |
1666 1667 1668 1669 |
* 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 |
1670 |
* |
3c98bf347 ide-tape: cleanup... |
1671 1672 |
* 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 |
1673 |
*/ |
5a04cfa91 ide-tape: cleanup... |
1674 |
static void idetape_setup(ide_drive_t *drive, idetape_tape_t *tape, int minor) |
1da177e4c Linux-2.6.12-rc2 |
1675 |
{ |
83042b241 ide-tape: remove ... |
1676 |
unsigned long t; |
1da177e4c Linux-2.6.12-rc2 |
1677 |
int speed; |
b64220132 ide-tape: remove ... |
1678 |
u16 *ctl = (u16 *)&tape->caps[12]; |
1da177e4c Linux-2.6.12-rc2 |
1679 |
|
e972d7027 ide-tape: convert... |
1680 1681 1682 |
ide_debug_log(IDE_DBG_FUNC, "minor: %d", minor); drive->pc_callback = ide_tape_callback; |
776bb0270 ide-tape: use dri... |
1683 |
|
97100fc81 ide: add device f... |
1684 |
drive->dev_flags |= IDE_DFLAG_DSC_OVERLAP; |
4166c1993 ide: add IDE_HFLA... |
1685 1686 1687 1688 |
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... |
1689 |
drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP; |
1da177e4c Linux-2.6.12-rc2 |
1690 |
} |
97100fc81 ide: add device f... |
1691 |
|
1da177e4c Linux-2.6.12-rc2 |
1692 |
/* Seagate Travan drives do not support DSC overlap. */ |
4dde4492d ide: make drive->... |
1693 |
if (strstr((char *)&drive->id[ATA_ID_PROD], "Seagate STT3401")) |
97100fc81 ide: add device f... |
1694 |
drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP; |
1da177e4c Linux-2.6.12-rc2 |
1695 1696 1697 1698 |
tape->minor = minor; tape->name[0] = 'h'; tape->name[1] = 't'; tape->name[2] = '0' + minor; |
54abf37e4 ide-tape: remove ... |
1699 |
tape->chrdev_dir = IDETAPE_DIR_NONE; |
4dde4492d ide: make drive->... |
1700 |
|
1da177e4c Linux-2.6.12-rc2 |
1701 1702 |
idetape_get_inquiry_results(drive); idetape_get_mode_sense_results(drive); |
3cffb9ce4 ide-tape: remove ... |
1703 |
ide_tape_get_bsize_from_bdesc(drive); |
1da177e4c Linux-2.6.12-rc2 |
1704 |
tape->user_bs_factor = 1; |
f73850a30 ide-tape: mv tape... |
1705 1706 |
tape->buffer_size = *ctl * tape->blk_size; while (tape->buffer_size > 0xffff) { |
1da177e4c Linux-2.6.12-rc2 |
1707 1708 |
printk(KERN_NOTICE "ide-tape: decreasing stage size "); |
b64220132 ide-tape: remove ... |
1709 |
*ctl /= 2; |
f73850a30 ide-tape: mv tape... |
1710 |
tape->buffer_size = *ctl * tape->blk_size; |
1da177e4c Linux-2.6.12-rc2 |
1711 |
} |
1da177e4c Linux-2.6.12-rc2 |
1712 |
|
83042b241 ide-tape: remove ... |
1713 |
/* select the "best" DSC read/write polling freq */ |
b64220132 ide-tape: remove ... |
1714 |
speed = max(*(u16 *)&tape->caps[14], *(u16 *)&tape->caps[8]); |
1da177e4c Linux-2.6.12-rc2 |
1715 |
|
f73850a30 ide-tape: mv tape... |
1716 |
t = (IDETAPE_FIFO_THRESHOLD * tape->buffer_size * HZ) / (speed * 1000); |
1da177e4c Linux-2.6.12-rc2 |
1717 1718 |
/* |
3c98bf347 ide-tape: cleanup... |
1719 1720 |
* 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 |
1721 |
*/ |
a792bd5a4 ide-tape: use cla... |
1722 1723 |
tape->best_dsc_rw_freq = clamp_t(unsigned long, t, IDETAPE_DSC_RW_MIN, IDETAPE_DSC_RW_MAX); |
1da177e4c Linux-2.6.12-rc2 |
1724 |
printk(KERN_INFO "ide-tape: %s <-> %s: %dKBps, %d*%dkB buffer, " |
842159640 ide_tape: convert... |
1725 1726 |
"%ums tDSC%s ", |
b64220132 ide-tape: remove ... |
1727 |
drive->name, tape->name, *(u16 *)&tape->caps[14], |
f73850a30 ide-tape: mv tape... |
1728 1729 |
(*(u16 *)&tape->caps[16] * 512) / tape->buffer_size, tape->buffer_size / 1024, |
842159640 ide_tape: convert... |
1730 |
jiffies_to_msecs(tape->best_dsc_rw_freq), |
97100fc81 ide: add device f... |
1731 |
(drive->dev_flags & IDE_DFLAG_USING_DMA) ? ", DMA" : ""); |
1da177e4c Linux-2.6.12-rc2 |
1732 |
|
1e874f448 ide: call ide_pro... |
1733 |
ide_proc_register_driver(drive, tape->driver); |
1da177e4c Linux-2.6.12-rc2 |
1734 |
} |
4031bbe4b [PATCH] Add ide_b... |
1735 |
static void ide_tape_remove(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
1736 1737 |
{ idetape_tape_t *tape = drive->driver_data; |
1da177e4c Linux-2.6.12-rc2 |
1738 |
|
7662d046d ide: move IDE set... |
1739 |
ide_proc_unregister_driver(drive, tape->driver); |
8fed43684 ide: fix refcount... |
1740 |
device_del(&tape->dev); |
1da177e4c Linux-2.6.12-rc2 |
1741 |
ide_unregister_region(tape->disk); |
8fed43684 ide: fix refcount... |
1742 1743 1744 |
mutex_lock(&idetape_ref_mutex); put_device(&tape->dev); mutex_unlock(&idetape_ref_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1745 |
} |
8fed43684 ide: fix refcount... |
1746 |
static void ide_tape_release(struct device *dev) |
1da177e4c Linux-2.6.12-rc2 |
1747 |
{ |
8fed43684 ide: fix refcount... |
1748 |
struct ide_tape_obj *tape = to_ide_drv(dev, ide_tape_obj); |
1da177e4c Linux-2.6.12-rc2 |
1749 1750 |
ide_drive_t *drive = tape->drive; struct gendisk *g = tape->disk; |
963da55c4 ide-tape: kill id... |
1751 |
BUG_ON(tape->valid); |
8604affde [PATCH] convert I... |
1752 |
|
97100fc81 ide: add device f... |
1753 |
drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP; |
1da177e4c Linux-2.6.12-rc2 |
1754 |
drive->driver_data = NULL; |
dbc1272ed IDE: Convert from... |
1755 |
device_destroy(idetape_sysfs_class, MKDEV(IDETAPE_MAJOR, tape->minor)); |
5a04cfa91 ide-tape: cleanup... |
1756 1757 |
device_destroy(idetape_sysfs_class, MKDEV(IDETAPE_MAJOR, tape->minor + 128)); |
1da177e4c Linux-2.6.12-rc2 |
1758 1759 1760 1761 1762 |
idetape_devs[tape->minor] = NULL; g->private_data = NULL; put_disk(g); kfree(tape); } |
ecfd80e4a ide: make /proc/i... |
1763 |
#ifdef CONFIG_IDE_PROC_FS |
6d703a81a ide: convert to -... |
1764 |
static int idetape_name_proc_show(struct seq_file *m, void *v) |
1da177e4c Linux-2.6.12-rc2 |
1765 |
{ |
6d703a81a ide: convert to -... |
1766 |
ide_drive_t *drive = (ide_drive_t *) m->private; |
1da177e4c Linux-2.6.12-rc2 |
1767 |
idetape_tape_t *tape = drive->driver_data; |
1da177e4c Linux-2.6.12-rc2 |
1768 |
|
6d703a81a ide: convert to -... |
1769 1770 1771 1772 |
seq_printf(m, "%s ", tape->name); return 0; } |
1da177e4c Linux-2.6.12-rc2 |
1773 |
static ide_proc_entry_t idetape_proc[] = { |
ec7d9c9ce ide: replace ->pr... |
1774 1775 |
{ "capacity", S_IFREG|S_IRUGO, ide_capacity_proc_show }, { "name", S_IFREG|S_IRUGO, idetape_name_proc_show }, |
6d703a81a ide: convert to -... |
1776 |
{} |
1da177e4c Linux-2.6.12-rc2 |
1777 |
}; |
79cb38039 ide: allow device... |
1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 |
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 |
1788 |
#endif |
4031bbe4b [PATCH] Add ide_b... |
1789 |
static int ide_tape_probe(ide_drive_t *); |
1da177e4c Linux-2.6.12-rc2 |
1790 |
|
7f3c868ba ide: remove ide_d... |
1791 |
static struct ide_driver idetape_driver = { |
8604affde [PATCH] convert I... |
1792 |
.gen_driver = { |
4ef3b8f4a [PATCH] ide: remo... |
1793 |
.owner = THIS_MODULE, |
8604affde [PATCH] convert I... |
1794 1795 |
.name = "ide-tape", .bus = &ide_bus_type, |
8604affde [PATCH] convert I... |
1796 |
}, |
4031bbe4b [PATCH] Add ide_b... |
1797 1798 |
.probe = ide_tape_probe, .remove = ide_tape_remove, |
1da177e4c Linux-2.6.12-rc2 |
1799 |
.version = IDETAPE_VERSION, |
1da177e4c Linux-2.6.12-rc2 |
1800 |
.do_request = idetape_do_request, |
7662d046d ide: move IDE set... |
1801 |
#ifdef CONFIG_IDE_PROC_FS |
79cb38039 ide: allow device... |
1802 1803 |
.proc_entries = ide_tape_proc_entries, .proc_devsets = ide_tape_proc_devsets, |
7662d046d ide: move IDE set... |
1804 |
#endif |
1da177e4c Linux-2.6.12-rc2 |
1805 |
}; |
3c98bf347 ide-tape: cleanup... |
1806 |
/* Our character device supporting functions, passed to register_chrdev. */ |
2b8693c06 [PATCH] mark stru... |
1807 |
static const struct file_operations idetape_fops = { |
1da177e4c Linux-2.6.12-rc2 |
1808 1809 1810 |
.owner = THIS_MODULE, .read = idetape_chrdev_read, .write = idetape_chrdev_write, |
05227adff ide_tape: kill of... |
1811 |
.unlocked_ioctl = idetape_chrdev_ioctl, |
1da177e4c Linux-2.6.12-rc2 |
1812 1813 |
.open = idetape_chrdev_open, .release = idetape_chrdev_release, |
6038f373a llseek: automatic... |
1814 |
.llseek = noop_llseek, |
1da177e4c Linux-2.6.12-rc2 |
1815 |
}; |
a4600f813 [PATCH] switch id... |
1816 |
static int idetape_open(struct block_device *bdev, fmode_t mode) |
1da177e4c Linux-2.6.12-rc2 |
1817 |
{ |
6e9624b8c block: push down ... |
1818 |
struct ide_tape_obj *tape; |
2a48fc0ab block: autoconver... |
1819 |
mutex_lock(&ide_tape_mutex); |
6e9624b8c block: push down ... |
1820 |
tape = ide_tape_get(bdev->bd_disk, false, 0); |
2a48fc0ab block: autoconver... |
1821 |
mutex_unlock(&ide_tape_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1822 |
|
5a04cfa91 ide-tape: cleanup... |
1823 |
if (!tape) |
1da177e4c Linux-2.6.12-rc2 |
1824 |
return -ENXIO; |
1da177e4c Linux-2.6.12-rc2 |
1825 1826 |
return 0; } |
db2a144be block_device_oper... |
1827 |
static void idetape_release(struct gendisk *disk, fmode_t mode) |
1da177e4c Linux-2.6.12-rc2 |
1828 |
{ |
5aeddf907 ide: unify conver... |
1829 |
struct ide_tape_obj *tape = ide_drv_g(disk, ide_tape_obj); |
1da177e4c Linux-2.6.12-rc2 |
1830 |
|
2a48fc0ab block: autoconver... |
1831 |
mutex_lock(&ide_tape_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1832 |
ide_tape_put(tape); |
2a48fc0ab block: autoconver... |
1833 |
mutex_unlock(&ide_tape_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1834 |
} |
a4600f813 [PATCH] switch id... |
1835 |
static int idetape_ioctl(struct block_device *bdev, fmode_t mode, |
1da177e4c Linux-2.6.12-rc2 |
1836 1837 |
unsigned int cmd, unsigned long arg) { |
5aeddf907 ide: unify conver... |
1838 |
struct ide_tape_obj *tape = ide_drv_g(bdev->bd_disk, ide_tape_obj); |
1da177e4c Linux-2.6.12-rc2 |
1839 |
ide_drive_t *drive = tape->drive; |
8a6cfeb6d block: push down ... |
1840 |
int err; |
2a48fc0ab block: autoconver... |
1841 |
mutex_lock(&ide_tape_mutex); |
8a6cfeb6d block: push down ... |
1842 |
err = generic_ide_ioctl(drive, bdev, cmd, arg); |
1da177e4c Linux-2.6.12-rc2 |
1843 1844 |
if (err == -EINVAL) err = idetape_blkdev_ioctl(drive, cmd, arg); |
2a48fc0ab block: autoconver... |
1845 |
mutex_unlock(&ide_tape_mutex); |
8a6cfeb6d block: push down ... |
1846 |
|
1da177e4c Linux-2.6.12-rc2 |
1847 1848 |
return err; } |
83d5cde47 const: make block... |
1849 |
static const struct block_device_operations idetape_block_ops = { |
1da177e4c Linux-2.6.12-rc2 |
1850 |
.owner = THIS_MODULE, |
a4600f813 [PATCH] switch id... |
1851 1852 |
.open = idetape_open, .release = idetape_release, |
8a6cfeb6d block: push down ... |
1853 |
.ioctl = idetape_ioctl, |
1da177e4c Linux-2.6.12-rc2 |
1854 |
}; |
4031bbe4b [PATCH] Add ide_b... |
1855 |
static int ide_tape_probe(ide_drive_t *drive) |
1da177e4c Linux-2.6.12-rc2 |
1856 1857 1858 1859 |
{ idetape_tape_t *tape; struct gendisk *g; int minor; |
e972d7027 ide-tape: convert... |
1860 1861 1862 |
ide_debug_log(IDE_DBG_FUNC, "enter"); if (!strstr(DRV_NAME, drive->driver_req)) |
1da177e4c Linux-2.6.12-rc2 |
1863 |
goto failed; |
2a924662b ide: remove needl... |
1864 |
|
1da177e4c Linux-2.6.12-rc2 |
1865 1866 |
if (drive->media != ide_tape) goto failed; |
2a924662b ide: remove needl... |
1867 |
|
97100fc81 ide: add device f... |
1868 1869 |
if ((drive->dev_flags & IDE_DFLAG_ID_READ) && ide_check_atapi_device(drive, DRV_NAME) == 0) { |
5a04cfa91 ide-tape: cleanup... |
1870 1871 1872 |
printk(KERN_ERR "ide-tape: %s: not supported by this version of" " the driver ", drive->name); |
1da177e4c Linux-2.6.12-rc2 |
1873 1874 |
goto failed; } |
5a04cfa91 ide-tape: cleanup... |
1875 |
tape = kzalloc(sizeof(idetape_tape_t), GFP_KERNEL); |
1da177e4c Linux-2.6.12-rc2 |
1876 |
if (tape == NULL) { |
5a04cfa91 ide-tape: cleanup... |
1877 1878 1879 |
printk(KERN_ERR "ide-tape: %s: Can't allocate a tape struct ", drive->name); |
1da177e4c Linux-2.6.12-rc2 |
1880 1881 1882 1883 1884 1885 1886 1887 |
goto failed; } g = alloc_disk(1 << PARTN_BITS); if (!g) goto out_free_tape; ide_init_disk(g, drive); |
8fed43684 ide: fix refcount... |
1888 1889 |
tape->dev.parent = &drive->gendev; tape->dev.release = ide_tape_release; |
02aa2a376 drivers: avoid fo... |
1890 |
dev_set_name(&tape->dev, "%s", dev_name(&drive->gendev)); |
8fed43684 ide: fix refcount... |
1891 1892 1893 |
if (device_register(&tape->dev)) goto out_free_disk; |
1da177e4c Linux-2.6.12-rc2 |
1894 1895 1896 1897 1898 1899 1900 1901 |
tape->drive = drive; tape->driver = &idetape_driver; tape->disk = g; g->private_data = &tape->driver; drive->driver_data = tape; |
cf8b8975c [PATCH] sem2mutex... |
1902 |
mutex_lock(&idetape_ref_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1903 1904 1905 |
for (minor = 0; idetape_devs[minor]; minor++) ; idetape_devs[minor] = tape; |
cf8b8975c [PATCH] sem2mutex... |
1906 |
mutex_unlock(&idetape_ref_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1907 1908 |
idetape_setup(drive, tape, minor); |
3ee074bf4 device create: id... |
1909 1910 1911 1912 1913 |
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... |
1914 |
|
1da177e4c Linux-2.6.12-rc2 |
1915 1916 1917 1918 |
g->fops = &idetape_block_ops; ide_register_region(g); return 0; |
8604affde [PATCH] convert I... |
1919 |
|
8fed43684 ide: fix refcount... |
1920 1921 |
out_free_disk: put_disk(g); |
1da177e4c Linux-2.6.12-rc2 |
1922 1923 1924 |
out_free_tape: kfree(tape); failed: |
8604affde [PATCH] convert I... |
1925 |
return -ENODEV; |
1da177e4c Linux-2.6.12-rc2 |
1926 |
} |
5a04cfa91 ide-tape: cleanup... |
1927 |
static void __exit idetape_exit(void) |
1da177e4c Linux-2.6.12-rc2 |
1928 |
{ |
8604affde [PATCH] convert I... |
1929 |
driver_unregister(&idetape_driver.gen_driver); |
d5dee80ad [PATCH] add sysfs... |
1930 |
class_destroy(idetape_sysfs_class); |
1da177e4c Linux-2.6.12-rc2 |
1931 1932 |
unregister_chrdev(IDETAPE_MAJOR, "ht"); } |
17514e8a6 [PATCH] ide: add ... |
1933 |
static int __init idetape_init(void) |
1da177e4c Linux-2.6.12-rc2 |
1934 |
{ |
d5dee80ad [PATCH] add sysfs... |
1935 1936 1937 1938 1939 1940 1941 1942 1943 |
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 |
1944 |
if (register_chrdev(IDETAPE_MAJOR, "ht", &idetape_fops)) { |
5a04cfa91 ide-tape: cleanup... |
1945 1946 1947 |
printk(KERN_ERR "ide-tape: Failed to register chrdev" " interface "); |
d5dee80ad [PATCH] add sysfs... |
1948 1949 |
error = -EBUSY; goto out_free_class; |
1da177e4c Linux-2.6.12-rc2 |
1950 |
} |
d5dee80ad [PATCH] add sysfs... |
1951 1952 1953 |
error = driver_register(&idetape_driver.gen_driver); if (error) |
79f18a063 ide-tape: fix mis... |
1954 |
goto out_free_chrdev; |
d5dee80ad [PATCH] add sysfs... |
1955 1956 |
return 0; |
79f18a063 ide-tape: fix mis... |
1957 1958 |
out_free_chrdev: unregister_chrdev(IDETAPE_MAJOR, "ht"); |
d5dee80ad [PATCH] add sysfs... |
1959 1960 1961 1962 |
out_free_class: class_destroy(idetape_sysfs_class); out: return error; |
1da177e4c Linux-2.6.12-rc2 |
1963 |
} |
263756ec2 [PATCH] ide: MODA... |
1964 |
MODULE_ALIAS("ide:*m-tape*"); |
1da177e4c Linux-2.6.12-rc2 |
1965 1966 1967 |
module_init(idetape_init); module_exit(idetape_exit); MODULE_ALIAS_CHARDEV_MAJOR(IDETAPE_MAJOR); |
9c1457688 ide-tape: collect... |
1968 1969 |
MODULE_DESCRIPTION("ATAPI Streaming TAPE Driver"); MODULE_LICENSE("GPL"); |