/*
- * linux/drivers/ide/ide-tape.c Version 1.19 Nov, 2003
- *
- * Copyright (C) 1995 - 1999 Gadi Oxman <gadio@netvision.net.il>
+ * IDE ATAPI streaming tape driver.
*
- * $Header$
+ * Copyright (C) 1995-1999 Gadi Oxman <gadio@netvision.net.il>
+ * Copyright (C) 2003-2005 Bartlomiej Zolnierkiewicz
*
* This driver was constructed as a student project in the software laboratory
* of the faculty of electrical engineering in the Technion - Israel's
*
* It is hereby placed under the terms of the GNU general public license.
* (See linux/COPYING).
- */
-
-/*
- * IDE ATAPI streaming tape driver.
- *
- * This driver is a part of the Linux ide driver and works in co-operation
- * with linux/drivers/block/ide.c.
- *
- * The driver, in co-operation with ide.c, basically traverses the
- * request-list for the block device interface. The character device
- * interface, on the other hand, creates new requests, adds them
- * to the request-list of the block device, and waits for their completion.
- *
- * Pipelined operation mode is now supported on both reads and writes.
- *
- * The block device major and minor numbers are determined from the
- * tape's relative position in the ide interfaces, as explained in ide.c.
- *
- * The character device interface consists of the following devices:
- *
- * ht0 major 37, minor 0 first IDE tape, rewind on close.
- * ht1 major 37, minor 1 second IDE tape, rewind on close.
- * ...
- * nht0 major 37, minor 128 first IDE tape, no rewind on close.
- * nht1 major 37, minor 129 second IDE tape, no rewind on close.
- * ...
- *
- * Run linux/scripts/MAKEDEV.ide to create the above entries.
- *
- * The general magnetic tape commands compatible interface, as defined by
- * include/linux/mtio.h, is accessible through the character device.
- *
- * General ide driver configuration options, such as the interrupt-unmask
- * flag, can be configured by issuing an ioctl to the block device interface,
- * as any other ide device.
- *
- * Our own ide-tape ioctl's can be issued to either the block device or
- * the character device interface.
- *
- * Maximal throughput with minimal bus load will usually be achieved in the
- * following scenario:
- *
- * 1. ide-tape is operating in the pipelined operation mode.
- * 2. No buffering is performed by the user backup program.
- *
- * Testing was done with a 2 GB CONNER CTMA 4000 IDE ATAPI Streaming Tape Drive.
- *
- * Ver 0.1 Nov 1 95 Pre-working code :-)
- * Ver 0.2 Nov 23 95 A short backup (few megabytes) and restore procedure
- * was successful ! (Using tar cvf ... on the block
- * device interface).
- * A longer backup resulted in major swapping, bad
- * overall Linux performance and eventually failed as
- * we received non serial read-ahead requests from the
- * buffer cache.
- * Ver 0.3 Nov 28 95 Long backups are now possible, thanks to the
- * character device interface. Linux's responsiveness
- * and performance doesn't seem to be much affected
- * from the background backup procedure.
- * Some general mtio.h magnetic tape operations are
- * now supported by our character device. As a result,
- * popular tape utilities are starting to work with
- * ide tapes :-)
- * The following configurations were tested:
- * 1. An IDE ATAPI TAPE shares the same interface
- * and irq with an IDE ATAPI CDROM.
- * 2. An IDE ATAPI TAPE shares the same interface
- * and irq with a normal IDE disk.
- * Both configurations seemed to work just fine !
- * However, to be on the safe side, it is meanwhile
- * recommended to give the IDE TAPE its own interface
- * and irq.
- * The one thing which needs to be done here is to
- * add a "request postpone" feature to ide.c,
- * so that we won't have to wait for the tape to finish
- * performing a long media access (DSC) request (such
- * as a rewind) before we can access the other device
- * on the same interface. This effect doesn't disturb
- * normal operation most of the time because read/write
- * requests are relatively fast, and once we are
- * performing one tape r/w request, a lot of requests
- * from the other device can be queued and ide.c will
- * service all of them after this single tape request.
- * Ver 1.0 Dec 11 95 Integrated into Linux 1.3.46 development tree.
- * On each read / write request, we now ask the drive
- * if we can transfer a constant number of bytes
- * (a parameter of the drive) only to its buffers,
- * without causing actual media access. If we can't,
- * we just wait until we can by polling the DSC bit.
- * This ensures that while we are not transferring
- * more bytes than the constant referred to above, the
- * interrupt latency will not become too high and
- * we won't cause an interrupt timeout, as happened
- * occasionally in the previous version.
- * While polling for DSC, the current request is
- * postponed and ide.c is free to handle requests from
- * the other device. This is handled transparently to
- * ide.c. The hwgroup locking method which was used
- * in the previous version was removed.
- * Use of new general features which are provided by
- * ide.c for use with atapi devices.
- * (Programming done by Mark Lord)
- * Few potential bug fixes (Again, suggested by Mark)
- * Single character device data transfers are now
- * not limited in size, as they were before.
- * We are asking the tape about its recommended
- * transfer unit and send a larger data transfer
- * as several transfers of the above size.
- * For best results, use an integral number of this
- * basic unit (which is shown during driver
- * initialization). I will soon add an ioctl to get
- * this important parameter.
- * Our data transfer buffer is allocated on startup,
- * rather than before each data transfer. This should
- * ensure that we will indeed have a data buffer.
- * Ver 1.1 Dec 14 95 Fixed random problems which occurred when the tape
- * shared an interface with another device.
- * (poll_for_dsc was a complete mess).
- * Removed some old (non-active) code which had
- * to do with supporting buffer cache originated
- * requests.
- * The block device interface can now be opened, so
- * that general ide driver features like the unmask
- * interrupts flag can be selected with an ioctl.
- * This is the only use of the block device interface.
- * New fast pipelined operation mode (currently only on
- * writes). When using the pipelined mode, the
- * throughput can potentially reach the maximum
- * tape supported throughput, regardless of the
- * user backup program. On my tape drive, it sometimes
- * boosted performance by a factor of 2. Pipelined
- * mode is enabled by default, but since it has a few
- * downfalls as well, you may want to disable it.
- * A short explanation of the pipelined operation mode
- * is available below.
- * Ver 1.2 Jan 1 96 Eliminated pipelined mode race condition.
- * Added pipeline read mode. As a result, restores
- * are now as fast as backups.
- * Optimized shared interface behavior. The new behavior
- * typically results in better IDE bus efficiency and
- * higher tape throughput.
- * Pre-calculation of the expected read/write request
- * service time, based on the tape's parameters. In
- * the pipelined operation mode, this allows us to
- * adjust our polling frequency to a much lower value,
- * and thus to dramatically reduce our load on Linux,
- * without any decrease in performance.
- * Implemented additional mtio.h operations.
- * The recommended user block size is returned by
- * the MTIOCGET ioctl.
- * Additional minor changes.
- * Ver 1.3 Feb 9 96 Fixed pipelined read mode bug which prevented the
- * use of some block sizes during a restore procedure.
- * The character device interface will now present a
- * continuous view of the media - any mix of block sizes
- * during a backup/restore procedure is supported. The
- * driver will buffer the requests internally and
- * convert them to the tape's recommended transfer
- * unit, making performance almost independent of the
- * chosen user block size.
- * Some improvements in error recovery.
- * By cooperating with ide-dma.c, bus mastering DMA can
- * now sometimes be used with IDE tape drives as well.
- * Bus mastering DMA has the potential to dramatically
- * reduce the CPU's overhead when accessing the device,
- * and can be enabled by using hdparm -d1 on the tape's
- * block device interface. For more info, read the
- * comments in ide-dma.c.
- * Ver 1.4 Mar 13 96 Fixed serialize support.
- * Ver 1.5 Apr 12 96 Fixed shared interface operation, broken in 1.3.85.
- * Fixed pipelined read mode inefficiency.
- * Fixed nasty null dereferencing bug.
- * Ver 1.6 Aug 16 96 Fixed FPU usage in the driver.
- * Fixed end of media bug.
- * Ver 1.7 Sep 10 96 Minor changes for the CONNER CTT8000-A model.
- * Ver 1.8 Sep 26 96 Attempt to find a better balance between good
- * interactive response and high system throughput.
- * Ver 1.9 Nov 5 96 Automatically cross encountered filemarks rather
- * than requiring an explicit FSF command.
- * Abort pending requests at end of media.
- * MTTELL was sometimes returning incorrect results.
- * Return the real block size in the MTIOCGET ioctl.
- * Some error recovery bug fixes.
- * Ver 1.10 Nov 5 96 Major reorganization.
- * Reduced CPU overhead a bit by eliminating internal
- * bounce buffers.
- * Added module support.
- * Added multiple tape drives support.
- * Added partition support.
- * Rewrote DSC handling.
- * Some portability fixes.
- * Removed ide-tape.h.
- * Additional minor changes.
- * Ver 1.11 Dec 2 96 Bug fix in previous DSC timeout handling.
- * Use ide_stall_queue() for DSC overlap.
- * Use the maximum speed rather than the current speed
- * to compute the request service time.
- * Ver 1.12 Dec 7 97 Fix random memory overwriting and/or last block data
- * corruption, which could occur if the total number
- * of bytes written to the tape was not an integral
- * number of tape blocks.
- * Add support for INTERRUPT DRQ devices.
- * Ver 1.13 Jan 2 98 Add "speed == 0" work-around for HP COLORADO 5GB
- * Ver 1.14 Dec 30 98 Partial fixes for the Sony/AIWA tape drives.
- * Replace cli()/sti() with hwgroup spinlocks.
- * Ver 1.15 Mar 25 99 Fix SMP race condition by replacing hwgroup
- * spinlock with private per-tape spinlock.
- * Ver 1.16 Sep 1 99 Add OnStream tape support.
- * Abort read pipeline on EOD.
- * Wait for the tape to become ready in case it returns
- * "in the process of becoming ready" on open().
- * Fix zero padding of the last written block in
- * case the tape block size is larger than PAGE_SIZE.
- * Decrease the default disconnection time to tn.
- * Ver 1.16e Oct 3 99 Minor fixes.
- * Ver 1.16e1 Oct 13 99 Patches by Arnold Niessen,
- * niessen@iae.nl / arnold.niessen@philips.com
- * GO-1) Undefined code in idetape_read_position
- * according to Gadi's email
- * AJN-1) Minor fix asc == 11 should be asc == 0x11
- * in idetape_issue_packet_command (did effect
- * debugging output only)
- * AJN-2) Added more debugging output, and
- * added ide-tape: where missing. I would also
- * like to add tape->name where possible
- * AJN-3) Added different debug_level's
- * via /proc/ide/hdc/settings
- * "debug_level" determines amount of debugging output;
- * can be changed using /proc/ide/hdx/settings
- * 0 : almost no debugging output
- * 1 : 0+output errors only
- * 2 : 1+output all sensekey/asc
- * 3 : 2+follow all chrdev related procedures
- * 4 : 3+follow all procedures
- * 5 : 4+include pc_stack rq_stack info
- * 6 : 5+USE_COUNT updates
- * AJN-4) Fixed timeout for retension in idetape_queue_pc_tail
- * from 5 to 10 minutes
- * AJN-5) Changed maximum number of blocks to skip when
- * reading tapes with multiple consecutive write
- * errors from 100 to 1000 in idetape_get_logical_blk
- * Proposed changes to code:
- * 1) output "logical_blk_num" via /proc
- * 2) output "current_operation" via /proc
- * 3) Either solve or document the fact that `mt rewind' is
- * required after reading from /dev/nhtx to be
- * able to rmmod the idetape module;
- * Also, sometimes an application finishes but the
- * device remains `busy' for some time. Same cause ?
- * Proposed changes to release-notes:
- * 4) write a simple `quickstart' section in the
- * release notes; I volunteer if you don't want to
- * 5) include a pointer to video4linux in the doc
- * to stimulate video applications
- * 6) release notes lines 331 and 362: explain what happens
- * if the application data rate is higher than 1100 KB/s;
- * similar approach to lower-than-500 kB/s ?
- * 7) 6.6 Comparison; wouldn't it be better to allow different
- * strategies for read and write ?
- * Wouldn't it be better to control the tape buffer
- * contents instead of the bandwidth ?
- * 8) line 536: replace will by would (if I understand
- * this section correctly, a hypothetical and unwanted situation
- * is being described)
- * Ver 1.16f Dec 15 99 Change place of the secondary OnStream header frames.
- * Ver 1.17 Nov 2000 / Jan 2001 Marcel Mol, marcel@mesa.nl
- * - Add idetape_onstream_mode_sense_tape_parameter_page
- * function to get tape capacity in frames: tape->capacity.
- * - Add support for DI-50 drives( or any DI- drive).
- * - 'workaround' for read error/blank block around block 3000.
- * - Implement Early warning for end of media for Onstream.
- * - Cosmetic code changes for readability.
- * - Idetape_position_tape should not use SKIP bit during
- * Onstream read recovery.
- * - Add capacity, logical_blk_num and first/last_frame_position
- * to /proc/ide/hd?/settings.
- * - Module use count was gone in the Linux 2.4 driver.
- * Ver 1.17a Apr 2001 Willem Riede osst@riede.org
- * - Get drive's actual block size from mode sense block descriptor
- * - Limit size of pipeline
- * Ver 1.17b Oct 2002 Alan Stern <stern@rowland.harvard.edu>
- * Changed IDETAPE_MIN_PIPELINE_STAGES to 1 and actually used
- * it in the code!
- * Actually removed aborted stages in idetape_abort_pipeline
- * instead of just changing the command code.
- * Made the transfer byte count for Request Sense equal to the
- * actual length of the data transfer.
- * Changed handling of partial data transfers: they do not
- * cause DMA errors.
- * Moved initiation of DMA transfers to the correct place.
- * Removed reference to unallocated memory.
- * Made __idetape_discard_read_pipeline return the number of
- * sectors skipped, not the number of stages.
- * Replaced errant kfree() calls with __idetape_kfree_stage().
- * Fixed off-by-one error in testing the pipeline length.
- * Fixed handling of filemarks in the read pipeline.
- * Small code optimization for MTBSF and MTBSFM ioctls.
- * Don't try to unlock the door during device close if is
- * already unlocked!
- * Cosmetic fixes to miscellaneous debugging output messages.
- * Set the minimum /proc/ide/hd?/settings values for "pipeline",
- * "pipeline_min", and "pipeline_max" to 1.
- *
- * Here are some words from the first releases of hd.c, which are quoted
- * in ide.c and apply here as well:
- *
- * | Special care is recommended. Have Fun!
- *
- */
-
-/*
- * An overview of the pipelined operation mode.
- *
- * In the pipelined write mode, we will usually just add requests to our
- * pipeline and return immediately, before we even start to service them. The
- * user program will then have enough time to prepare the next request while
- * we are still busy servicing previous requests. In the pipelined read mode,
- * the situation is similar - we add read-ahead requests into the pipeline,
- * before the user even requested them.
- *
- * The pipeline can be viewed as a "safety net" which will be activated when
- * the system load is high and prevents the user backup program from keeping up
- * with the current tape speed. At this point, the pipeline will get
- * shorter and shorter but the tape will still be streaming at the same speed.
- * Assuming we have enough pipeline stages, the system load will hopefully
- * decrease before the pipeline is completely empty, and the backup program
- * will be able to "catch up" and refill the pipeline again.
- *
- * When using the pipelined mode, it would be best to disable any type of
- * buffering done by the user program, as ide-tape already provides all the
- * benefits in the kernel, where it can be done in a more efficient way.
- * As we will usually not block the user program on a request, the most
- * efficient user code will then be a simple read-write-read-... cycle.
- * Any additional logic will usually just slow down the backup process.
- *
- * Using the pipelined mode, I get a constant over 400 KBps throughput,
- * which seems to be the maximum throughput supported by my tape.
*
- * However, there are some downfalls:
- *
- * 1. We use memory (for data buffers) in proportional to the number
- * of pipeline stages (each stage is about 26 KB with my tape).
- * 2. In the pipelined write mode, we cheat and postpone error codes
- * to the user task. In read mode, the actual tape position
- * will be a bit further than the last requested block.
- *
- * Concerning (1):
- *
- * 1. We allocate stages dynamically only when we need them. When
- * we don't need them, we don't consume additional memory. In
- * case we can't allocate stages, we just manage without them
- * (at the expense of decreased throughput) so when Linux is
- * tight in memory, we will not pose additional difficulties.
- *
- * 2. The maximum number of stages (which is, in fact, the maximum
- * amount of memory) which we allocate is limited by the compile
- * time parameter IDETAPE_MAX_PIPELINE_STAGES.
- *
- * 3. The maximum number of stages is a controlled parameter - We
- * don't start from the user defined maximum number of stages
- * but from the lower IDETAPE_MIN_PIPELINE_STAGES (again, we
- * will not even allocate this amount of stages if the user
- * program can't handle the speed). We then implement a feedback
- * loop which checks if the pipeline is empty, and if it is, we
- * increase the maximum number of stages as necessary until we
- * reach the optimum value which just manages to keep the tape
- * busy with minimum allocated memory or until we reach
- * IDETAPE_MAX_PIPELINE_STAGES.
- *
- * Concerning (2):
- *
- * In pipelined write mode, ide-tape can not return accurate error codes
- * to the user program since we usually just add the request to the
- * pipeline without waiting for it to be serviced. In case an error
- * occurs, I will report it on the next user request.
- *
- * In the pipelined read mode, subsequent read requests or forward
- * filemark spacing will perform correctly, as we preserve all blocks
- * and filemarks which we encountered during our excess read-ahead.
- *
- * For accurate tape positioning and error reporting, disabling
- * pipelined mode might be the best option.
- *
- * You can enable/disable/tune the pipelined operation mode by adjusting
- * the compile time parameters below.
- */
-
-/*
- * Possible improvements.
- *
- * 1. Support for the ATAPI overlap protocol.
- *
- * In order to maximize bus throughput, we currently use the DSC
- * overlap method which enables ide.c to service requests from the
- * other device while the tape is busy executing a command. The
- * DSC overlap method involves polling the tape's status register
- * for the DSC bit, and servicing the other device while the tape
- * isn't ready.
- *
- * In the current QIC development standard (December 1995),
- * it is recommended that new tape drives will *in addition*
- * implement the ATAPI overlap protocol, which is used for the
- * same purpose - efficient use of the IDE bus, but is interrupt
- * driven and thus has much less CPU overhead.
- *
- * ATAPI overlap is likely to be supported in most new ATAPI
- * devices, including new ATAPI cdroms, and thus provides us
- * a method by which we can achieve higher throughput when
- * sharing a (fast) ATA-2 disk with any (slow) new ATAPI device.
+ * For a historical changelog see
+ * Documentation/ide/ChangeLog.ide-tape.1995-2002
*/
#define IDETAPE_VERSION "1.19"
#include <linux/completion.h>
#include <linux/bitops.h>
#include <linux/mutex.h>
+#include <scsi/scsi.h>
#include <asm/byteorder.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/unaligned.h>
-
-/*
- * partition
- */
-typedef struct os_partition_s {
- __u8 partition_num;
- __u8 par_desc_ver;
- __u16 wrt_pass_cntr;
- __u32 first_frame_addr;
- __u32 last_frame_addr;
- __u32 eod_frame_addr;
-} os_partition_t;
-
-/*
- * DAT entry
- */
-typedef struct os_dat_entry_s {
- __u32 blk_sz;
- __u16 blk_cnt;
- __u8 flags;
- __u8 reserved;
-} os_dat_entry_t;
-
-/*
- * DAT
- */
-#define OS_DAT_FLAGS_DATA (0xc)
-#define OS_DAT_FLAGS_MARK (0x1)
-
-typedef struct os_dat_s {
- __u8 dat_sz;
- __u8 reserved1;
- __u8 entry_cnt;
- __u8 reserved3;
- os_dat_entry_t dat_list[16];
-} os_dat_t;
-
#include <linux/mtio.h>
/**************************** Tunable parameters *****************************/
/*
* The following are used to debug the driver:
*
- * Setting IDETAPE_DEBUG_INFO to 1 will report device capabilities.
* Setting IDETAPE_DEBUG_LOG to 1 will log driver flow control.
- * Setting IDETAPE_DEBUG_BUGS to 1 will enable self-sanity checks in
- * some places.
*
* Setting them to 0 will restore normal operation mode:
*
* is verified to be stable enough. This will make it much more
* esthetic.
*/
-#define IDETAPE_DEBUG_INFO 0
#define IDETAPE_DEBUG_LOG 0
-#define IDETAPE_DEBUG_BUGS 1
/*
* After each failed packet command we issue a request sense command
* 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 sytem
+ * interactive response, while using a high value might improve system
* throughput.
*/
#define IDETAPE_FIFO_THRESHOLD 2
/*************************** End of tunable parameters ***********************/
-/*
- * Debugging/Performance analysis
- *
- * I/O trace support
- */
-#define USE_IOTRACE 0
-#if USE_IOTRACE
-#include <linux/io_trace.h>
-#define IO_IDETAPE_FIFO 500
-#endif
-
/*
* Read/Write error simulation
*/
/* Data direction */
#define PC_WRITING 5
-/*
- * Capabilities and Mechanical Status Page
- */
-typedef struct {
- unsigned page_code :6; /* Page code - Should be 0x2a */
- __u8 reserved0_6 :1;
- __u8 ps :1; /* parameters saveable */
- __u8 page_length; /* Page Length - Should be 0x12 */
- __u8 reserved2, reserved3;
- unsigned ro :1; /* Read Only Mode */
- unsigned reserved4_1234 :4;
- unsigned sprev :1; /* Supports SPACE in the reverse direction */
- unsigned reserved4_67 :2;
- unsigned reserved5_012 :3;
- unsigned efmt :1; /* Supports ERASE command initiated formatting */
- unsigned reserved5_4 :1;
- unsigned qfa :1; /* Supports the QFA two partition formats */
- unsigned reserved5_67 :2;
- unsigned lock :1; /* Supports locking the volume */
- unsigned locked :1; /* The volume is locked */
- unsigned prevent :1; /* The device defaults in the prevent state after power up */
- unsigned eject :1; /* The device can eject the volume */
- __u8 disconnect :1; /* The device can break request > ctl */
- __u8 reserved6_5 :1;
- unsigned ecc :1; /* Supports error correction */
- unsigned cmprs :1; /* Supports data compression */
- unsigned reserved7_0 :1;
- unsigned blk512 :1; /* Supports 512 bytes block size */
- unsigned blk1024 :1; /* Supports 1024 bytes block size */
- unsigned reserved7_3_6 :4;
- unsigned blk32768 :1; /* slowb - the device restricts the byte count for PIO */
- /* transfers for slow buffer memory ??? */
- /* Also 32768 block size in some cases */
- __u16 max_speed; /* Maximum speed supported in KBps */
- __u8 reserved10, reserved11;
- __u16 ctl; /* Continuous Transfer Limit in blocks */
- __u16 speed; /* Current Speed, in KBps */
- __u16 buffer_size; /* Buffer Size, in 512 bytes */
- __u8 reserved18, reserved19;
-} idetape_capabilities_page_t;
-
-/*
- * Block Size Page
- */
-typedef struct {
- unsigned page_code :6; /* Page code - Should be 0x30 */
- unsigned reserved1_6 :1;
- unsigned ps :1;
- __u8 page_length; /* Page Length - Should be 2 */
- __u8 reserved2;
- unsigned play32 :1;
- unsigned play32_5 :1;
- unsigned reserved2_23 :2;
- unsigned record32 :1;
- unsigned record32_5 :1;
- unsigned reserved2_6 :1;
- unsigned one :1;
-} idetape_block_size_page_t;
-
/*
* A pipeline stage.
*/
struct idetape_stage_s *next; /* Pointer to the next stage */
} idetape_stage_t;
-/*
- * REQUEST SENSE packet command result - Data Format.
- */
-typedef struct {
- unsigned error_code :7; /* Current of deferred errors */
- unsigned valid :1; /* The information field conforms to QIC-157C */
- __u8 reserved1 :8; /* Segment Number - Reserved */
- unsigned sense_key :4; /* Sense Key */
- unsigned reserved2_4 :1; /* Reserved */
- unsigned ili :1; /* Incorrect Length Indicator */
- unsigned eom :1; /* End Of Medium */
- unsigned filemark :1; /* Filemark */
- __u32 information __attribute__ ((packed));
- __u8 asl; /* Additional sense length (n-7) */
- __u32 command_specific; /* Additional command specific information */
- __u8 asc; /* Additional Sense Code */
- __u8 ascq; /* Additional Sense Code Qualifier */
- __u8 replaceable_unit_code; /* Field Replaceable Unit Code */
- unsigned sk_specific1 :7; /* Sense Key Specific */
- unsigned sksv :1; /* Sense Key Specific information is valid */
- __u8 sk_specific2; /* Sense Key Specific */
- __u8 sk_specific3; /* Sense Key Specific */
- __u8 pad[2]; /* Padding to 20 bytes */
-} idetape_request_sense_result_t;
-
-
/*
* Most of our global data which we need to save even as we leave the
* driver due to an interrupt or a timer event is stored in a variable
/* Usually 512 or 1024 bytes */
unsigned short tape_block_size;
int user_bs_factor;
+
/* Copy of the tape's Capabilities and Mechanical Page */
- idetape_capabilities_page_t capabilities;
+ u8 caps[20];
/*
* Active data transfer request parameters.
int avg_size;
int avg_speed;
- /* last sense information */
- idetape_request_sense_result_t sense;
-
char vendor_id[10];
char product_id[18];
char firmware_revision[6];
/* 0 = no tape is loaded, so we don't rewind after ejecting */
#define IDETAPE_MEDIUM_PRESENT 9
-/*
- * Supported ATAPI tape drives packet commands
- */
-#define IDETAPE_TEST_UNIT_READY_CMD 0x00
-#define IDETAPE_REWIND_CMD 0x01
-#define IDETAPE_REQUEST_SENSE_CMD 0x03
-#define IDETAPE_READ_CMD 0x08
-#define IDETAPE_WRITE_CMD 0x0a
-#define IDETAPE_WRITE_FILEMARK_CMD 0x10
-#define IDETAPE_SPACE_CMD 0x11
-#define IDETAPE_INQUIRY_CMD 0x12
-#define IDETAPE_ERASE_CMD 0x19
-#define IDETAPE_MODE_SENSE_CMD 0x1a
-#define IDETAPE_MODE_SELECT_CMD 0x15
-#define IDETAPE_LOAD_UNLOAD_CMD 0x1b
-#define IDETAPE_PREVENT_CMD 0x1e
-#define IDETAPE_LOCATE_CMD 0x2b
-#define IDETAPE_READ_POSITION_CMD 0x34
-#define IDETAPE_READ_BUFFER_CMD 0x3c
-#define IDETAPE_SET_SPEED_CMD 0xbb
-
/*
* Some defines for the READ BUFFER command
*/
unsigned protocol :2; /* Protocol type */
};
-/*
- * INQUIRY packet command - Data Format (From Table 6-8 of QIC-157C)
- */
-typedef struct {
- unsigned device_type :5; /* Peripheral Device Type */
- unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */
- unsigned reserved1_6t0 :7; /* Reserved */
- unsigned rmb :1; /* Removable Medium Bit */
- unsigned ansi_version :3; /* ANSI Version */
- unsigned ecma_version :3; /* ECMA Version */
- unsigned iso_version :2; /* ISO Version */
- unsigned response_format :4; /* Response Data Format */
- unsigned reserved3_45 :2; /* Reserved */
- unsigned reserved3_6 :1; /* TrmIOP - Reserved */
- unsigned reserved3_7 :1; /* AENC - Reserved */
- __u8 additional_length; /* Additional Length (total_length-4) */
- __u8 rsv5, rsv6, rsv7; /* Reserved */
- __u8 vendor_id[8]; /* Vendor Identification */
- __u8 product_id[16]; /* Product Identification */
- __u8 revision_level[4]; /* Revision Level */
- __u8 vendor_specific[20]; /* Vendor Specific - Optional */
- __u8 reserved56t95[40]; /* Reserved - Optional */
- /* Additional information may be returned */
-} idetape_inquiry_result_t;
-
/*
* READ POSITION packet command - Data Format (From Table 6-57)
*/
u32 bytes_in_buffer; /* Bytes In Buffer (Optional) */
} idetape_read_position_result_t;
-/*
- * Follows structures which are related to the SELECT SENSE / MODE SENSE
- * packet commands. Those packet commands are still not supported
- * by ide-tape.
- */
+/* Structures related to the SELECT SENSE / MODE SENSE packet commands. */
#define IDETAPE_BLOCK_DESCRIPTOR 0
#define IDETAPE_CAPABILITIES_PAGE 0x2a
-#define IDETAPE_PARAMTR_PAGE 0x2b /* Onstream DI-x0 only */
-#define IDETAPE_BLOCK_SIZE_PAGE 0x30
-#define IDETAPE_BUFFER_FILLING_PAGE 0x33
-
-/*
- * Mode Parameter Header for the MODE SENSE packet command
- */
-typedef struct {
- __u8 mode_data_length; /* Length of the following data transfer */
- __u8 medium_type; /* Medium Type */
- __u8 dsp; /* Device Specific Parameter */
- __u8 bdl; /* Block Descriptor Length */
-#if 0
- /* data transfer page */
- __u8 page_code :6;
- __u8 reserved0_6 :1;
- __u8 ps :1; /* parameters saveable */
- __u8 page_length; /* page Length == 0x02 */
- __u8 reserved2;
- __u8 read32k :1; /* 32k blk size (data only) */
- __u8 read32k5 :1; /* 32.5k blk size (data&AUX) */
- __u8 reserved3_23 :2;
- __u8 write32k :1; /* 32k blk size (data only) */
- __u8 write32k5 :1; /* 32.5k blk size (data&AUX) */
- __u8 reserved3_6 :1;
- __u8 streaming :1; /* streaming mode enable */
-#endif
-} idetape_mode_parameter_header_t;
-
-/*
- * Mode Parameter Block Descriptor the MODE SENSE packet command
- *
- * Support for block descriptors is optional.
- */
-typedef struct {
- __u8 density_code; /* Medium density code */
- __u8 blocks[3]; /* Number of blocks */
- __u8 reserved4; /* Reserved */
- __u8 length[3]; /* Block Length */
-} idetape_parameter_block_descriptor_t;
-
-/*
- * The Data Compression Page, as returned by the MODE SENSE packet command.
- */
-typedef struct {
- unsigned page_code :6; /* Page Code - Should be 0xf */
- unsigned reserved0 :1; /* Reserved */
- unsigned ps :1;
- __u8 page_length; /* Page Length - Should be 14 */
- unsigned reserved2 :6; /* Reserved */
- unsigned dcc :1; /* Data Compression Capable */
- unsigned dce :1; /* Data Compression Enable */
- unsigned reserved3 :5; /* Reserved */
- unsigned red :2; /* Report Exception on Decompression */
- unsigned dde :1; /* Data Decompression Enable */
- __u32 ca; /* Compression Algorithm */
- __u32 da; /* Decompression Algorithm */
- __u8 reserved[4]; /* Reserved */
-} idetape_data_compression_page_t;
-
-/*
- * The Medium Partition Page, as returned by the MODE SENSE packet command.
- */
-typedef struct {
- unsigned page_code :6; /* Page Code - Should be 0x11 */
- unsigned reserved1_6 :1; /* Reserved */
- unsigned ps :1;
- __u8 page_length; /* Page Length - Should be 6 */
- __u8 map; /* Maximum Additional Partitions - Should be 0 */
- __u8 apd; /* Additional Partitions Defined - Should be 0 */
- unsigned reserved4_012 :3; /* Reserved */
- unsigned psum :2; /* Should be 0 */
- unsigned idp :1; /* Should be 0 */
- unsigned sdp :1; /* Should be 0 */
- unsigned fdp :1; /* Fixed Data Partitions */
- __u8 mfr; /* Medium Format Recognition */
- __u8 reserved[2]; /* Reserved */
-} idetape_medium_partition_page_t;
-
-/*
- * Run time configurable parameters.
- */
-typedef struct {
- int dsc_rw_frequency;
- int dsc_media_access_frequency;
- int nr_stages;
-} idetape_config_t;
/*
* The variables below are used for the character device interface.
int count;
while (bcount) {
-#if IDETAPE_DEBUG_BUGS
if (bh == NULL) {
printk(KERN_ERR "ide-tape: bh == NULL in "
"idetape_input_buffers\n");
idetape_discard_data(drive, bcount);
return;
}
-#endif /* IDETAPE_DEBUG_BUGS */
count = min((unsigned int)(bh->b_size - atomic_read(&bh->b_count)), bcount);
HWIF(drive)->atapi_input_bytes(drive, bh->b_data + atomic_read(&bh->b_count), count);
bcount -= count;
int count;
while (bcount) {
-#if IDETAPE_DEBUG_BUGS
if (bh == NULL) {
printk(KERN_ERR "ide-tape: bh == NULL in "
"idetape_output_buffers\n");
return;
}
-#endif /* IDETAPE_DEBUG_BUGS */
count = min((unsigned int)pc->b_count, (unsigned int)bcount);
HWIF(drive)->atapi_output_bytes(drive, pc->b_data, count);
bcount -= count;
if (test_bit(PC_WRITING, &pc->flags))
return;
while (bcount) {
-#if IDETAPE_DEBUG_BUGS
if (bh == NULL) {
printk(KERN_ERR "ide-tape: bh == NULL in "
"idetape_update_buffers\n");
return;
}
-#endif /* IDETAPE_DEBUG_BUGS */
count = min((unsigned int)bh->b_size, (unsigned int)bcount);
atomic_set(&bh->b_count, count);
if (atomic_read(&bh->b_count) == bh->b_size)
}
/*
- * idetape_analyze_error is called on each failed packet command retry
- * to analyze the request sense. We currently do not utilize this
- * information.
+ * called on each failed packet command retry to analyze the request sense. We
+ * currently do not utilize this information.
*/
-static void idetape_analyze_error (ide_drive_t *drive, idetape_request_sense_result_t *result)
+static void idetape_analyze_error(ide_drive_t *drive, u8 *sense)
{
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t *pc = tape->failed_pc;
- tape->sense = *result;
- tape->sense_key = result->sense_key;
- tape->asc = result->asc;
- tape->ascq = result->ascq;
+ tape->sense_key = sense[2] & 0xF;
+ tape->asc = sense[12];
+ tape->ascq = sense[13];
#if IDETAPE_DEBUG_LOG
/*
- * Without debugging, we only log an error if we decided to
- * give up retrying.
+ * Without debugging, we only log an error if we decided to give up
+ * retrying.
*/
if (tape->debug_level >= 1)
printk(KERN_INFO "ide-tape: pc = %x, sense key = %x, "
"asc = %x, ascq = %x\n",
- pc->c[0], result->sense_key,
- result->asc, result->ascq);
+ pc->c[0], tape->sense_key,
+ tape->asc, tape->ascq);
#endif /* IDETAPE_DEBUG_LOG */
- /*
- * Correct pc->actually_transferred by asking the tape.
- */
+ /* Correct pc->actually_transferred by asking the tape. */
if (test_bit(PC_DMA_ERROR, &pc->flags)) {
- pc->actually_transferred = pc->request_transfer - tape->tape_block_size * ntohl(get_unaligned(&result->information));
+ pc->actually_transferred = pc->request_transfer -
+ tape->tape_block_size *
+ be32_to_cpu(get_unaligned((u32 *)&sense[3]));
idetape_update_buffers(pc);
}
* 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.
*/
- if ((pc->c[0] == IDETAPE_READ_CMD || pc->c[0] == IDETAPE_WRITE_CMD)
- && pc->c[4] == 0 && pc->c[3] == 0 && pc->c[2] == 0) { /* length==0 */
- if (result->sense_key == 5) {
+ if ((pc->c[0] == READ_6 || pc->c[0] == WRITE_6)
+ /* length == 0 */
+ && pc->c[4] == 0 && pc->c[3] == 0 && pc->c[2] == 0) {
+ if (tape->sense_key == 5) {
/* don't report an error, everything's ok */
pc->error = 0;
/* don't retry read/write */
set_bit(PC_ABORT, &pc->flags);
}
}
- if (pc->c[0] == IDETAPE_READ_CMD && result->filemark) {
+ if (pc->c[0] == READ_6 && (sense[2] & 0x80)) {
pc->error = IDETAPE_ERROR_FILEMARK;
set_bit(PC_ABORT, &pc->flags);
}
- if (pc->c[0] == IDETAPE_WRITE_CMD) {
- if (result->eom ||
- (result->sense_key == 0xd && result->asc == 0x0 &&
- result->ascq == 0x2)) {
+ if (pc->c[0] == WRITE_6) {
+ if ((sense[2] & 0x40) || (tape->sense_key == 0xd
+ && tape->asc == 0x0 && tape->ascq == 0x2)) {
pc->error = IDETAPE_ERROR_EOD;
set_bit(PC_ABORT, &pc->flags);
}
}
- if (pc->c[0] == IDETAPE_READ_CMD || pc->c[0] == IDETAPE_WRITE_CMD) {
- if (result->sense_key == 8) {
+ if (pc->c[0] == READ_6 || pc->c[0] == WRITE_6) {
+ if (tape->sense_key == 8) {
pc->error = IDETAPE_ERROR_EOD;
set_bit(PC_ABORT, &pc->flags);
}
}
}
-/*
- * idetape_active_next_stage will declare the next stage as "active".
- */
-static void idetape_active_next_stage (ide_drive_t *drive)
+static void idetape_activate_next_stage(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
idetape_stage_t *stage = tape->next_stage;
if (tape->debug_level >= 4)
printk(KERN_INFO "ide-tape: Reached idetape_active_next_stage\n");
#endif /* IDETAPE_DEBUG_LOG */
-#if IDETAPE_DEBUG_BUGS
if (stage == NULL) {
printk(KERN_ERR "ide-tape: bug: Trying to activate a non existing stage\n");
return;
}
-#endif /* IDETAPE_DEBUG_BUGS */
rq->rq_disk = tape->disk;
rq->buffer = NULL;
if (tape->debug_level >= 4)
printk(KERN_INFO "ide-tape: Reached idetape_remove_stage_head\n");
#endif /* IDETAPE_DEBUG_LOG */
-#if IDETAPE_DEBUG_BUGS
if (tape->first_stage == NULL) {
printk(KERN_ERR "ide-tape: bug: tape->first_stage is NULL\n");
- return;
+ return;
}
if (tape->active_stage == tape->first_stage) {
printk(KERN_ERR "ide-tape: bug: Trying to free our active pipeline stage\n");
return;
}
-#endif /* IDETAPE_DEBUG_BUGS */
stage = tape->first_stage;
tape->first_stage = stage->next;
idetape_kfree_stage(tape, stage);
tape->nr_stages--;
if (tape->first_stage == NULL) {
tape->last_stage = NULL;
-#if IDETAPE_DEBUG_BUGS
if (tape->next_stage != NULL)
printk(KERN_ERR "ide-tape: bug: tape->next_stage != NULL\n");
if (tape->nr_stages)
printk(KERN_ERR "ide-tape: bug: nr_stages should be 0 now\n");
-#endif /* IDETAPE_DEBUG_BUGS */
}
}
if (error)
tape->failed_pc = NULL;
+ if (!blk_special_request(rq)) {
+ ide_end_request(drive, uptodate, nr_sects);
+ return 0;
+ }
+
spin_lock_irqsave(&tape->spinlock, flags);
/* The request was a pipelined data transfer request */
}
}
if (tape->next_stage != NULL) {
- idetape_active_next_stage(drive);
+ idetape_activate_next_stage(drive);
/*
* Insert the next request into the request queue.
printk(KERN_INFO "ide-tape: Reached idetape_request_sense_callback\n");
#endif /* IDETAPE_DEBUG_LOG */
if (!tape->pc->error) {
- idetape_analyze_error(drive, (idetape_request_sense_result_t *) tape->pc->buffer);
+ idetape_analyze_error(drive, tape->pc->buffer);
idetape_end_request(drive, 1, 0);
} else {
printk(KERN_ERR "ide-tape: Error in REQUEST SENSE itself - Aborting request!\n");
static void idetape_create_request_sense_cmd (idetape_pc_t *pc)
{
idetape_init_pc(pc);
- pc->c[0] = IDETAPE_REQUEST_SENSE_CMD;
+ pc->c[0] = REQUEST_SENSE;
pc->c[4] = 20;
pc->request_transfer = 20;
pc->callback = &idetape_request_sense_callback;
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t *pc;
struct request *rq;
- atapi_error_t error;
- error.all = HWIF(drive)->INB(IDE_ERROR_REG);
+ (void)drive->hwif->INB(IDE_ERROR_REG);
pc = idetape_next_pc_storage(drive);
rq = idetape_next_rq_storage(drive);
idetape_create_request_sense_cmd(pc);
{
ide_hwif_t *hwif = drive->hwif;
idetape_tape_t *tape = drive->driver_data;
- atapi_status_t status;
- atapi_bcount_t bcount;
- atapi_ireason_t ireason;
idetape_pc_t *pc = tape->pc;
-
unsigned int temp;
#if SIMULATE_ERRORS
static int error_sim_count = 0;
#endif
+ u16 bcount;
+ u8 stat, ireason;
#if IDETAPE_DEBUG_LOG
if (tape->debug_level >= 4)
#endif /* IDETAPE_DEBUG_LOG */
/* Clear the interrupt */
- status.all = HWIF(drive)->INB(IDE_STATUS_REG);
+ stat = hwif->INB(IDE_STATUS_REG);
if (test_bit(PC_DMA_IN_PROGRESS, &pc->flags)) {
- if (HWIF(drive)->ide_dma_end(drive) || status.b.check) {
+ if (hwif->ide_dma_end(drive) || (stat & ERR_STAT)) {
/*
* A DMA error is sometimes expected. For example,
* if the tape is crossing a filemark during a
}
/* No more interrupts */
- if (!status.b.drq) {
+ if ((stat & DRQ_STAT) == 0) {
#if IDETAPE_DEBUG_LOG
if (tape->debug_level >= 2)
printk(KERN_INFO "ide-tape: Packet command completed, %d bytes transferred\n", pc->actually_transferred);
local_irq_enable();
#if SIMULATE_ERRORS
- if ((pc->c[0] == IDETAPE_WRITE_CMD ||
- pc->c[0] == IDETAPE_READ_CMD) &&
+ if ((pc->c[0] == WRITE_6 || pc->c[0] == READ_6) &&
(++error_sim_count % 100) == 0) {
printk(KERN_INFO "ide-tape: %s: simulating error\n",
tape->name);
- status.b.check = 1;
+ stat |= ERR_STAT;
}
#endif
- if (status.b.check && pc->c[0] == IDETAPE_REQUEST_SENSE_CMD)
- status.b.check = 0;
- if (status.b.check || test_bit(PC_DMA_ERROR, &pc->flags)) { /* Error detected */
+ if ((stat & ERR_STAT) && pc->c[0] == REQUEST_SENSE)
+ stat &= ~ERR_STAT;
+ if ((stat & ERR_STAT) || test_bit(PC_DMA_ERROR, &pc->flags)) {
+ /* Error detected */
#if IDETAPE_DEBUG_LOG
if (tape->debug_level >= 1)
printk(KERN_INFO "ide-tape: %s: I/O error\n",
tape->name);
#endif /* IDETAPE_DEBUG_LOG */
- if (pc->c[0] == IDETAPE_REQUEST_SENSE_CMD) {
+ if (pc->c[0] == REQUEST_SENSE) {
printk(KERN_ERR "ide-tape: I/O error in request sense command\n");
return ide_do_reset(drive);
}
}
pc->error = 0;
if (test_bit(PC_WAIT_FOR_DSC, &pc->flags) &&
- !status.b.dsc) {
+ (stat & SEEK_STAT) == 0) {
/* Media access command */
tape->dsc_polling_start = jiffies;
tape->dsc_polling_frequency = IDETAPE_DSC_MA_FAST;
return ide_do_reset(drive);
}
/* Get the number of bytes to transfer on this interrupt. */
- bcount.b.high = hwif->INB(IDE_BCOUNTH_REG);
- bcount.b.low = hwif->INB(IDE_BCOUNTL_REG);
+ bcount = (hwif->INB(IDE_BCOUNTH_REG) << 8) |
+ hwif->INB(IDE_BCOUNTL_REG);
- ireason.all = hwif->INB(IDE_IREASON_REG);
+ ireason = hwif->INB(IDE_IREASON_REG);
- if (ireason.b.cod) {
+ if (ireason & CD) {
printk(KERN_ERR "ide-tape: CoD != 0 in idetape_pc_intr\n");
return ide_do_reset(drive);
}
- if (ireason.b.io == test_bit(PC_WRITING, &pc->flags)) {
+ if (((ireason & IO) == IO) == test_bit(PC_WRITING, &pc->flags)) {
/* Hopefully, we will never get here */
printk(KERN_ERR "ide-tape: We wanted to %s, ",
- ireason.b.io ? "Write":"Read");
+ (ireason & IO) ? "Write" : "Read");
printk(KERN_ERR "ide-tape: but the tape wants us to %s !\n",
- ireason.b.io ? "Read":"Write");
+ (ireason & IO) ? "Read" : "Write");
return ide_do_reset(drive);
}
if (!test_bit(PC_WRITING, &pc->flags)) {
/* Reading - Check that we have enough space */
- temp = pc->actually_transferred + bcount.all;
+ temp = pc->actually_transferred + bcount;
if (temp > pc->request_transfer) {
if (temp > pc->buffer_size) {
printk(KERN_ERR "ide-tape: The tape wants to send us more data than expected - discarding data\n");
- idetape_discard_data(drive, bcount.all);
+ idetape_discard_data(drive, bcount);
ide_set_handler(drive, &idetape_pc_intr, IDETAPE_WAIT_CMD, NULL);
return ide_started;
}
}
if (test_bit(PC_WRITING, &pc->flags)) {
if (pc->bh != NULL)
- idetape_output_buffers(drive, pc, bcount.all);
+ idetape_output_buffers(drive, pc, bcount);
else
/* Write the current buffer */
- HWIF(drive)->atapi_output_bytes(drive, pc->current_position, bcount.all);
+ hwif->atapi_output_bytes(drive, pc->current_position,
+ bcount);
} else {
if (pc->bh != NULL)
- idetape_input_buffers(drive, pc, bcount.all);
+ idetape_input_buffers(drive, pc, bcount);
else
/* Read the current buffer */
- HWIF(drive)->atapi_input_bytes(drive, pc->current_position, bcount.all);
+ hwif->atapi_input_bytes(drive, pc->current_position,
+ bcount);
}
/* Update the current position */
- pc->actually_transferred += bcount.all;
- pc->current_position += bcount.all;
+ pc->actually_transferred += bcount;
+ pc->current_position += bcount;
#if IDETAPE_DEBUG_LOG
if (tape->debug_level >= 2)
- printk(KERN_INFO "ide-tape: [cmd %x] transferred %d bytes on that interrupt\n", pc->c[0], bcount.all);
+ printk(KERN_INFO "ide-tape: [cmd %x] transferred %d bytes "
+ "on that interrupt\n", pc->c[0], bcount);
#endif
/* And set the interrupt handler again */
ide_set_handler(drive, &idetape_pc_intr, IDETAPE_WAIT_CMD, NULL);
ide_hwif_t *hwif = drive->hwif;
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t *pc = tape->pc;
- atapi_ireason_t ireason;
int retries = 100;
ide_startstop_t startstop;
+ u8 ireason;
if (ide_wait_stat(&startstop,drive,DRQ_STAT,BUSY_STAT,WAIT_READY)) {
printk(KERN_ERR "ide-tape: Strange, packet command initiated yet DRQ isn't asserted\n");
return startstop;
}
- ireason.all = hwif->INB(IDE_IREASON_REG);
- while (retries-- && (!ireason.b.cod || ireason.b.io)) {
+ ireason = hwif->INB(IDE_IREASON_REG);
+ while (retries-- && ((ireason & CD) == 0 || (ireason & IO))) {
printk(KERN_ERR "ide-tape: (IO,CoD != (0,1) while issuing "
"a packet command, retrying\n");
udelay(100);
- ireason.all = hwif->INB(IDE_IREASON_REG);
+ ireason = hwif->INB(IDE_IREASON_REG);
if (retries == 0) {
printk(KERN_ERR "ide-tape: (IO,CoD != (0,1) while "
"issuing a packet command, ignoring\n");
- ireason.b.cod = 1;
- ireason.b.io = 0;
+ ireason |= CD;
+ ireason &= ~IO;
}
}
- if (!ireason.b.cod || ireason.b.io) {
+ if ((ireason & CD) == 0 || (ireason & IO)) {
printk(KERN_ERR "ide-tape: (IO,CoD) != (0,1) while issuing "
"a packet command\n");
return ide_do_reset(drive);
{
ide_hwif_t *hwif = drive->hwif;
idetape_tape_t *tape = drive->driver_data;
- atapi_bcount_t bcount;
int dma_ok = 0;
+ u16 bcount;
-#if IDETAPE_DEBUG_BUGS
- if (tape->pc->c[0] == IDETAPE_REQUEST_SENSE_CMD &&
- pc->c[0] == IDETAPE_REQUEST_SENSE_CMD) {
+ if (tape->pc->c[0] == REQUEST_SENSE &&
+ pc->c[0] == REQUEST_SENSE) {
printk(KERN_ERR "ide-tape: possible ide-tape.c bug - "
"Two request sense in serial were issued\n");
}
-#endif /* IDETAPE_DEBUG_BUGS */
- if (tape->failed_pc == NULL && pc->c[0] != IDETAPE_REQUEST_SENSE_CMD)
+ if (tape->failed_pc == NULL && pc->c[0] != REQUEST_SENSE)
tape->failed_pc = pc;
/* Set the current packet command */
tape->pc = pc;
* filemark, or end of the media, for example).
*/
if (!test_bit(PC_ABORT, &pc->flags)) {
- if (!(pc->c[0] == IDETAPE_TEST_UNIT_READY_CMD &&
+ if (!(pc->c[0] == TEST_UNIT_READY &&
tape->sense_key == 2 && tape->asc == 4 &&
(tape->ascq == 1 || tape->ascq == 8))) {
printk(KERN_ERR "ide-tape: %s: I/O error, "
pc->actually_transferred = 0;
pc->current_position = pc->buffer;
/* Request to transfer the entire buffer at once */
- bcount.all = pc->request_transfer;
+ bcount = pc->request_transfer;
if (test_and_clear_bit(PC_DMA_ERROR, &pc->flags)) {
printk(KERN_WARNING "ide-tape: DMA disabled, "
if (test_bit(PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma)
dma_ok = !hwif->dma_setup(drive);
- if (IDE_CONTROL_REG)
- hwif->OUTB(drive->ctl, IDE_CONTROL_REG);
- hwif->OUTB(dma_ok ? 1 : 0, IDE_FEATURE_REG); /* Use PIO/DMA */
- hwif->OUTB(bcount.b.high, IDE_BCOUNTH_REG);
- hwif->OUTB(bcount.b.low, IDE_BCOUNTL_REG);
- hwif->OUTB(drive->select.all, IDE_SELECT_REG);
+ ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK |
+ IDE_TFLAG_OUT_DEVICE, bcount, dma_ok);
+
if (dma_ok) /* Will begin DMA later */
set_bit(PC_DMA_IN_PROGRESS, &pc->flags);
if (test_bit(IDETAPE_DRQ_INTERRUPT, &tape->flags)) {
- ide_set_handler(drive, &idetape_transfer_pc, IDETAPE_WAIT_CMD, NULL);
- hwif->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG);
+ ide_execute_command(drive, WIN_PACKETCMD, &idetape_transfer_pc,
+ IDETAPE_WAIT_CMD, NULL);
return ide_started;
} else {
hwif->OUTB(WIN_PACKETCMD, IDE_COMMAND_REG);
static void idetape_create_mode_sense_cmd (idetape_pc_t *pc, u8 page_code)
{
idetape_init_pc(pc);
- pc->c[0] = IDETAPE_MODE_SENSE_CMD;
+ pc->c[0] = MODE_SENSE;
if (page_code != IDETAPE_BLOCK_DESCRIPTOR)
pc->c[1] = 8; /* DBD = 1 - Don't return block descriptors */
pc->c[2] = page_code;
{
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t *pc = tape->pc;
- atapi_status_t status;
+ u8 stat;
- status.all = HWIF(drive)->INB(IDE_STATUS_REG);
- if (status.b.dsc) {
- if (status.b.check) {
+ stat = drive->hwif->INB(IDE_STATUS_REG);
+ if (stat & SEEK_STAT) {
+ if (stat & ERR_STAT) {
/* Error detected */
- if (pc->c[0] != IDETAPE_TEST_UNIT_READY_CMD)
+ if (pc->c[0] != TEST_UNIT_READY)
printk(KERN_ERR "ide-tape: %s: I/O error, ",
tape->name);
/* Retry operation */
static void idetape_create_read_cmd(idetape_tape_t *tape, idetape_pc_t *pc, unsigned int length, struct idetape_bh *bh)
{
idetape_init_pc(pc);
- pc->c[0] = IDETAPE_READ_CMD;
- put_unaligned(htonl(length), (unsigned int *) &pc->c[1]);
+ pc->c[0] = READ_6;
+ put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]);
pc->c[1] = 1;
pc->callback = &idetape_rw_callback;
pc->bh = bh;
struct idetape_bh *p = bh;
idetape_init_pc(pc);
- pc->c[0] = IDETAPE_READ_BUFFER_CMD;
+ pc->c[0] = READ_BUFFER;
pc->c[1] = IDETAPE_RETRIEVE_FAULTY_BLOCK;
pc->c[7] = size >> 8;
pc->c[8] = size & 0xff;
static void idetape_create_write_cmd(idetape_tape_t *tape, idetape_pc_t *pc, unsigned int length, struct idetape_bh *bh)
{
idetape_init_pc(pc);
- pc->c[0] = IDETAPE_WRITE_CMD;
- put_unaligned(htonl(length), (unsigned int *) &pc->c[1]);
+ pc->c[0] = WRITE_6;
+ put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]);
pc->c[1] = 1;
pc->callback = &idetape_rw_callback;
set_bit(PC_WRITING, &pc->flags);
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t *pc = NULL;
struct request *postponed_rq = tape->postponed_rq;
- atapi_status_t status;
+ u8 stat;
#if IDETAPE_DEBUG_LOG
-#if 0
- if (tape->debug_level >= 5)
- printk(KERN_INFO "ide-tape: %d, "
- "dev: %s, cmd: %ld, errors: %d\n",
- rq->rq_disk->disk_name, rq->cmd[0], rq->errors);
-#endif
if (tape->debug_level >= 2)
printk(KERN_INFO "ide-tape: sector: %ld, "
"nr_sectors: %ld, current_nr_sectors: %d\n",
* Retry a failed packet command
*/
if (tape->failed_pc != NULL &&
- tape->pc->c[0] == IDETAPE_REQUEST_SENSE_CMD) {
+ tape->pc->c[0] == REQUEST_SENSE) {
return idetape_issue_packet_command(drive, tape->failed_pc);
}
-#if IDETAPE_DEBUG_BUGS
if (postponed_rq != NULL)
if (rq != postponed_rq) {
printk(KERN_ERR "ide-tape: ide-tape.c bug - "
idetape_end_request(drive, 0, 0);
return ide_stopped;
}
-#endif /* IDETAPE_DEBUG_BUGS */
tape->postponed_rq = NULL;
* If the tape is still busy, postpone our request and service
* the other device meanwhile.
*/
- status.all = HWIF(drive)->INB(IDE_STATUS_REG);
+ stat = drive->hwif->INB(IDE_STATUS_REG);
if (!drive->dsc_overlap && !(rq->cmd[0] & REQ_IDETAPE_PC2))
set_bit(IDETAPE_IGNORE_DSC, &tape->flags);
tape->insert_speed = tape->insert_size / 1024 * HZ / (jiffies - tape->insert_time);
calculate_speeds(drive);
if (!test_and_clear_bit(IDETAPE_IGNORE_DSC, &tape->flags) &&
- !status.b.dsc) {
+ (stat & SEEK_STAT) == 0) {
if (postponed_rq == NULL) {
tape->dsc_polling_start = jiffies;
tape->dsc_polling_frequency = tape->best_dsc_rw_frequency;
}
if (rq->cmd[0] & REQ_IDETAPE_READ) {
tape->buffer_head++;
-#if USE_IOTRACE
- IO_trace(IO_IDETAPE_FIFO, tape->pipeline_head, tape->buffer_head, tape->tape_head, tape->minor);
-#endif
tape->postpone_cnt = 0;
pc = idetape_next_pc_storage(drive);
idetape_create_read_cmd(tape, pc, rq->current_nr_sectors, (struct idetape_bh *)rq->special);
}
if (rq->cmd[0] & REQ_IDETAPE_WRITE) {
tape->buffer_head++;
-#if USE_IOTRACE
- IO_trace(IO_IDETAPE_FIFO, tape->pipeline_head, tape->buffer_head, tape->tape_head, tape->minor);
-#endif
tape->postpone_cnt = 0;
pc = idetape_next_pc_storage(drive);
idetape_create_write_cmd(tape, pc, rq->current_nr_sectors, (struct idetape_bh *)rq->special);
int ret = 0;
while (n) {
-#if IDETAPE_DEBUG_BUGS
if (bh == NULL) {
printk(KERN_ERR "ide-tape: bh == NULL in "
"idetape_copy_stage_from_user\n");
return 1;
}
-#endif /* IDETAPE_DEBUG_BUGS */
count = min((unsigned int)(bh->b_size - atomic_read(&bh->b_count)), (unsigned int)n);
if (copy_from_user(bh->b_data + atomic_read(&bh->b_count), buf, count))
ret = 1;
int ret = 0;
while (n) {
-#if IDETAPE_DEBUG_BUGS
if (bh == NULL) {
printk(KERN_ERR "ide-tape: bh == NULL in "
"idetape_copy_stage_to_user\n");
return 1;
}
-#endif /* IDETAPE_DEBUG_BUGS */
count = min(tape->b_count, n);
if (copy_to_user(buf, tape->b_data, count))
ret = 1;
DECLARE_COMPLETION_ONSTACK(wait);
idetape_tape_t *tape = drive->driver_data;
-#if IDETAPE_DEBUG_BUGS
if (rq == NULL || !blk_special_request(rq)) {
printk (KERN_ERR "ide-tape: bug: Trying to sleep on non-valid request\n");
return;
}
-#endif /* IDETAPE_DEBUG_BUGS */
rq->end_io_data = &wait;
rq->end_io = blk_end_sync_rq;
spin_unlock_irq(&tape->spinlock);
static void idetape_create_write_filemark_cmd (ide_drive_t *drive, idetape_pc_t *pc,int write_filemark)
{
idetape_init_pc(pc);
- pc->c[0] = IDETAPE_WRITE_FILEMARK_CMD;
+ pc->c[0] = WRITE_FILEMARKS;
pc->c[4] = write_filemark;
set_bit(PC_WAIT_FOR_DSC, &pc->flags);
pc->callback = &idetape_pc_callback;
static void idetape_create_test_unit_ready_cmd(idetape_pc_t *pc)
{
idetape_init_pc(pc);
- pc->c[0] = IDETAPE_TEST_UNIT_READY_CMD;
+ pc->c[0] = TEST_UNIT_READY;
pc->callback = &idetape_pc_callback;
}
static void idetape_create_load_unload_cmd (ide_drive_t *drive, idetape_pc_t *pc,int cmd)
{
idetape_init_pc(pc);
- pc->c[0] = IDETAPE_LOAD_UNLOAD_CMD;
+ pc->c[0] = START_STOP;
pc->c[4] = cmd;
set_bit(PC_WAIT_FOR_DSC, &pc->flags);
pc->callback = &idetape_pc_callback;
static void idetape_create_read_position_cmd (idetape_pc_t *pc)
{
idetape_init_pc(pc);
- pc->c[0] = IDETAPE_READ_POSITION_CMD;
+ pc->c[0] = READ_POSITION;
pc->request_transfer = 20;
pc->callback = &idetape_read_position_callback;
}
static void idetape_create_locate_cmd (ide_drive_t *drive, idetape_pc_t *pc, unsigned int block, u8 partition, int skip)
{
idetape_init_pc(pc);
- pc->c[0] = IDETAPE_LOCATE_CMD;
+ pc->c[0] = POSITION_TO_ELEMENT;
pc->c[1] = 2;
- put_unaligned(htonl(block), (unsigned int *) &pc->c[3]);
+ put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[3]);
pc->c[8] = partition;
set_bit(PC_WAIT_FOR_DSC, &pc->flags);
pc->callback = &idetape_pc_callback;
{
idetape_tape_t *tape = drive->driver_data;
- if (!tape->capabilities.lock)
+ /* device supports locking according to capabilities page */
+ if (!(tape->caps[6] & 0x01))
return 0;
idetape_init_pc(pc);
- pc->c[0] = IDETAPE_PREVENT_CMD;
+ pc->c[0] = ALLOW_MEDIUM_REMOVAL;
pc->c[4] = prevent;
pc->callback = &idetape_pc_callback;
return 1;
if (tape->debug_level >= 2)
printk(KERN_INFO "ide-tape: idetape_queue_rw_tail: cmd=%d\n",cmd);
#endif /* IDETAPE_DEBUG_LOG */
-#if IDETAPE_DEBUG_BUGS
if (idetape_pipeline_active(tape)) {
printk(KERN_ERR "ide-tape: bug: the pipeline is active in idetape_queue_rw_tail\n");
return (0);
}
-#endif /* IDETAPE_DEBUG_BUGS */
idetape_init_rq(&rq, cmd);
rq.rq_disk = tape->disk;
return;
if (!idetape_pipeline_active(tape)) {
set_bit(IDETAPE_PIPELINE_ACTIVE, &tape->flags);
- idetape_active_next_stage(drive);
+ idetape_activate_next_stage(drive);
(void) ide_do_drive_cmd(drive, tape->active_data_request, ide_end);
}
}
static void idetape_create_inquiry_cmd (idetape_pc_t *pc)
{
idetape_init_pc(pc);
- pc->c[0] = IDETAPE_INQUIRY_CMD;
+ pc->c[0] = INQUIRY;
pc->c[4] = pc->request_transfer = 254;
pc->callback = &idetape_pc_callback;
}
static void idetape_create_rewind_cmd (ide_drive_t *drive, idetape_pc_t *pc)
{
idetape_init_pc(pc);
- pc->c[0] = IDETAPE_REWIND_CMD;
+ pc->c[0] = REZERO_UNIT;
set_bit(PC_WAIT_FOR_DSC, &pc->flags);
pc->callback = &idetape_pc_callback;
}
-#if 0
-static void idetape_create_mode_select_cmd (idetape_pc_t *pc, int length)
-{
- idetape_init_pc(pc);
- set_bit(PC_WRITING, &pc->flags);
- pc->c[0] = IDETAPE_MODE_SELECT_CMD;
- pc->c[1] = 0x10;
- put_unaligned(htons(length), (unsigned short *) &pc->c[3]);
- pc->request_transfer = 255;
- pc->callback = &idetape_pc_callback;
-}
-#endif
-
static void idetape_create_erase_cmd (idetape_pc_t *pc)
{
idetape_init_pc(pc);
- pc->c[0] = IDETAPE_ERASE_CMD;
+ pc->c[0] = ERASE;
pc->c[1] = 1;
set_bit(PC_WAIT_FOR_DSC, &pc->flags);
pc->callback = &idetape_pc_callback;
static void idetape_create_space_cmd (idetape_pc_t *pc,int count, u8 cmd)
{
idetape_init_pc(pc);
- pc->c[0] = IDETAPE_SPACE_CMD;
- put_unaligned(htonl(count), (unsigned int *) &pc->c[1]);
+ pc->c[0] = SPACE;
+ put_unaligned(cpu_to_be32(count), (unsigned int *) &pc->c[1]);
pc->c[1] = cmd;
set_bit(PC_WAIT_FOR_DSC, &pc->flags);
pc->callback = &idetape_pc_callback;
idetape_switch_buffers(tape, new_stage);
idetape_add_stage_tail(drive, new_stage);
tape->pipeline_head++;
-#if USE_IOTRACE
- IO_trace(IO_IDETAPE_FIFO, tape->pipeline_head, tape->buffer_head, tape->tape_head, tape->minor);
-#endif
calculate_speeds(drive);
/*
idetape_tape_t *tape = drive->driver_data;
int blocks, min;
struct idetape_bh *bh;
-
-#if IDETAPE_DEBUG_BUGS
+
if (tape->chrdev_direction != idetape_direction_write) {
printk(KERN_ERR "ide-tape: bug: Trying to empty write pipeline, but we are not writing.\n");
return;
printk(KERN_ERR "ide-tape: bug: merge_buffer too big\n");
tape->merge_stage_size = tape->stage_size;
}
-#endif /* IDETAPE_DEBUG_BUGS */
if (tape->merge_stage_size) {
blocks = tape->merge_stage_size / tape->tape_block_size;
if (tape->merge_stage_size % tape->tape_block_size) {
* can be totally different on the next backup).
*/
tape->max_stages = tape->min_pipeline;
-#if IDETAPE_DEBUG_BUGS
if (tape->first_stage != NULL ||
tape->next_stage != NULL ||
tape->last_stage != NULL ||
tape->first_stage, tape->next_stage,
tape->last_stage, tape->nr_stages);
}
-#endif /* IDETAPE_DEBUG_BUGS */
}
static void idetape_restart_speed_control (ide_drive_t *drive)
idetape_stage_t *new_stage;
struct request rq;
int bytes_read;
- int blocks = tape->capabilities.ctl;
+ u16 blocks = *(u16 *)&tape->caps[12];
/* Initialize read operation */
if (tape->chrdev_direction != idetape_direction_read) {
idetape_empty_write_pipeline(drive);
idetape_flush_tape_buffers(drive);
}
-#if IDETAPE_DEBUG_BUGS
if (tape->merge_stage || tape->merge_stage_size) {
printk (KERN_ERR "ide-tape: merge_stage_size should be 0 now\n");
tape->merge_stage_size = 0;
}
-#endif /* IDETAPE_DEBUG_BUGS */
if ((tape->merge_stage = __idetape_kmalloc_stage(tape, 0, 0)) == NULL)
return -ENOMEM;
tape->chrdev_direction = idetape_direction_read;
idetape_remove_stage_head(drive);
spin_unlock_irqrestore(&tape->spinlock, flags);
tape->pipeline_head++;
-#if USE_IOTRACE
- IO_trace(IO_IDETAPE_FIFO, tape->pipeline_head, tape->buffer_head, tape->tape_head, tape->minor);
-#endif
calculate_speeds(drive);
}
-#if IDETAPE_DEBUG_BUGS
if (bytes_read > blocks * tape->tape_block_size) {
printk(KERN_ERR "ide-tape: bug: trying to return more bytes than requested\n");
bytes_read = blocks * tape->tape_block_size;
}
-#endif /* IDETAPE_DEBUG_BUGS */
return (bytes_read);
}
static int idetape_blkdev_ioctl(ide_drive_t *drive, unsigned int cmd, unsigned long arg)
{
idetape_tape_t *tape = drive->driver_data;
- idetape_config_t config;
void __user *argp = (void __user *)arg;
+ struct idetape_config {
+ int dsc_rw_frequency;
+ int dsc_media_access_frequency;
+ int nr_stages;
+ } config;
+
#if IDETAPE_DEBUG_LOG
if (tape->debug_level >= 4)
printk(KERN_INFO "ide-tape: Reached idetape_blkdev_ioctl\n");
#endif /* IDETAPE_DEBUG_LOG */
switch (cmd) {
case 0x0340:
- if (copy_from_user(&config, argp, sizeof (idetape_config_t)))
+ if (copy_from_user(&config, argp, sizeof(config)))
return -EFAULT;
tape->best_dsc_rw_frequency = config.dsc_rw_frequency;
tape->max_stages = config.nr_stages;
case 0x0350:
config.dsc_rw_frequency = (int) tape->best_dsc_rw_frequency;
config.nr_stages = tape->max_stages;
- if (copy_to_user(argp, &config, sizeof (idetape_config_t)))
+ if (copy_to_user(argp, &config, sizeof(config)))
return -EFAULT;
break;
default:
idetape_pc_t pc;
unsigned long flags;
int retval,count=0;
+ int sprev = !!(tape->caps[4] & 0x20);
if (mt_count == 0)
return 0;
if (MTBSF == mt_op || MTBSFM == mt_op) {
- if (!tape->capabilities.sprev)
+ if (!sprev)
return -EIO;
mt_count = - mt_count;
}
return (idetape_queue_pc_tail(drive, &pc));
case MTFSFM:
case MTBSFM:
- if (!tape->capabilities.sprev)
+ if (!sprev)
return (-EIO);
retval = idetape_space_over_filemarks(drive, MTFSF, mt_count-count);
if (retval) return (retval);
ide_drive_t *drive = tape->drive;
ssize_t bytes_read,temp, actually_read = 0, rc;
ssize_t ret = 0;
+ u16 ctl = *(u16 *)&tape->caps[12];
#if IDETAPE_DEBUG_LOG
if (tape->debug_level >= 3)
count -= actually_read;
}
while (count >= tape->stage_size) {
- bytes_read = idetape_add_chrdev_read_request(drive, tape->capabilities.ctl);
+ bytes_read = idetape_add_chrdev_read_request(drive, ctl);
if (bytes_read <= 0)
goto finish;
if (idetape_copy_stage_to_user(tape, buf, tape->merge_stage, bytes_read))
actually_read += bytes_read;
}
if (count) {
- bytes_read = idetape_add_chrdev_read_request(drive, tape->capabilities.ctl);
+ bytes_read = idetape_add_chrdev_read_request(drive, ctl);
if (bytes_read <= 0)
goto finish;
temp = min((unsigned long)count, (unsigned long)bytes_read);
ide_drive_t *drive = tape->drive;
ssize_t actually_written = 0;
ssize_t ret = 0;
+ u16 ctl = *(u16 *)&tape->caps[12];
/* The drive is write protected. */
if (tape->write_prot)
if (tape->chrdev_direction != idetape_direction_write) {
if (tape->chrdev_direction == idetape_direction_read)
idetape_discard_read_pipeline(drive, 1);
-#if IDETAPE_DEBUG_BUGS
if (tape->merge_stage || tape->merge_stage_size) {
printk(KERN_ERR "ide-tape: merge_stage_size "
"should be 0 now\n");
tape->merge_stage_size = 0;
}
-#endif /* IDETAPE_DEBUG_BUGS */
if ((tape->merge_stage = __idetape_kmalloc_stage(tape, 0, 0)) == NULL)
return -ENOMEM;
tape->chrdev_direction = idetape_direction_write;
if (tape->restart_speed_control_req)
idetape_restart_speed_control(drive);
if (tape->merge_stage_size) {
-#if IDETAPE_DEBUG_BUGS
if (tape->merge_stage_size >= tape->stage_size) {
printk(KERN_ERR "ide-tape: bug: merge buffer too big\n");
tape->merge_stage_size = 0;
}
-#endif /* IDETAPE_DEBUG_BUGS */
actually_written = min((unsigned int)(tape->stage_size - tape->merge_stage_size), (unsigned int)count);
if (idetape_copy_stage_from_user(tape, tape->merge_stage, buf, actually_written))
ret = -EFAULT;
if (tape->merge_stage_size == tape->stage_size) {
ssize_t retval;
tape->merge_stage_size = 0;
- retval = idetape_add_chrdev_write_request(drive, tape->capabilities.ctl);
+ retval = idetape_add_chrdev_write_request(drive, ctl);
if (retval <= 0)
return (retval);
}
ret = -EFAULT;
buf += tape->stage_size;
count -= tape->stage_size;
- retval = idetape_add_chrdev_write_request(drive, tape->capabilities.ctl);
+ retval = idetape_add_chrdev_write_request(drive, ctl);
actually_written += tape->stage_size;
if (retval <= 0)
return (retval);
}
/*
- * idetape_mtioctop is called from idetape_chrdev_ioctl when
- * the general mtio MTIOCTOP ioctl is requested.
- *
- * We currently support the following mtio.h operations:
- *
- * MTFSF - Space over mt_count filemarks in the positive direction.
- * The tape is positioned after the last spaced filemark.
- *
- * MTFSFM - Same as MTFSF, but the tape is positioned before the
- * last filemark.
- *
- * MTBSF - Steps background over mt_count filemarks, tape is
- * positioned before the last filemark.
+ * Called from idetape_chrdev_ioctl when the general mtio MTIOCTOP ioctl is
+ * requested.
*
- * MTBSFM - Like MTBSF, only tape is positioned after the last filemark.
+ * 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
+ * usually not supported (it is supported in the rare case in which we crossed
+ * the filemark during our read-ahead pipelined operation mode).
*
- * Note:
+ * The following commands are currently not supported:
*
- * 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 usually not supported (it is
- * supported in the rare case in which we crossed the filemark
- * during our read-ahead pipelined operation mode).
- *
- * MTWEOF - Writes mt_count filemarks. Tape is positioned after
- * the last written filemark.
- *
- * MTREW - Rewinds tape.
- *
- * MTLOAD - Loads the tape.
- *
- * MTOFFL - Puts the tape drive "Offline": Rewinds the tape and
- * MTUNLOAD prevents further access until the media is replaced.
- *
- * MTNOP - Flushes tape buffers.
- *
- * MTRETEN - Retension media. This typically consists of one end
- * to end pass on the media.
- *
- * MTEOM - Moves to the end of recorded data.
- *
- * MTERASE - Erases tape.
- *
- * MTSETBLK - Sets the user block size to mt_count bytes. If
- * mt_count is 0, we will attempt to autodetect
- * the block size.
- *
- * MTSEEK - Positions the tape in a specific block number, where
- * each block is assumed to contain which user_block_size
- * bytes.
- *
- * MTSETPART - Switches to another tape partition.
- *
- * MTLOCK - Locks the tape door.
- *
- * MTUNLOCK - Unlocks the tape door.
- *
- * The following commands are currently not supported:
- *
- * MTFSS, MTBSS, MTWSM, MTSETDENSITY,
- * MTSETDRVBUFFER, MT_ST_BOOLEANS, MT_ST_WRITE_THRESHOLD.
+ * MTFSS, MTBSS, MTWSM, MTSETDENSITY, MTSETDRVBUFFER, MT_ST_BOOLEANS,
+ * MT_ST_WRITE_THRESHOLD.
*/
-static int idetape_mtioctop (ide_drive_t *drive,short mt_op,int mt_count)
+static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count)
{
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t pc;
}
/*
- * Our character device ioctls.
- *
- * General mtio.h magnetic io commands are supported here, and not in
- * the corresponding block interface.
- *
- * The following ioctls are supported:
- *
- * MTIOCTOP - Refer to idetape_mtioctop for detailed description.
- *
- * MTIOCGET - The mt_dsreg field in the returned mtget structure
- * will be set to (user block size in bytes <<
- * MT_ST_BLKSIZE_SHIFT) & MT_ST_BLKSIZE_MASK.
- *
- * The mt_blkno is set to the current user block number.
- * The other mtget fields are not supported.
- *
- * MTIOCPOS - The current tape "block position" is returned. We
- * assume that each block contains user_block_size
- * bytes.
- *
- * Our own ide-tape ioctls are supported on both interfaces.
+ * 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.
*/
-static int idetape_chrdev_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static int idetape_chrdev_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
{
struct ide_tape_obj *tape = ide_tape_f(file);
ide_drive_t *drive = tape->drive;
}
}
-static void idetape_get_blocksize_from_block_descriptor(ide_drive_t *drive);
+/*
+ * 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;
+ idetape_pc_t pc;
+
+ idetape_create_mode_sense_cmd(&pc, IDETAPE_BLOCK_DESCRIPTOR);
+ if (idetape_queue_pc_tail(drive, &pc)) {
+ printk(KERN_ERR "ide-tape: Can't get block descriptor\n");
+ if (tape->tape_block_size == 0) {
+ printk(KERN_WARNING "ide-tape: Cannot deal with zero "
+ "block size, assuming 32k\n");
+ tape->tape_block_size = 32768;
+ }
+ return;
+ }
+ tape->tape_block_size = (pc.buffer[4 + 5] << 16) +
+ (pc.buffer[4 + 6] << 8) +
+ pc.buffer[4 + 7];
+ tape->drv_write_prot = (pc.buffer[2] & 0x80) >> 7;
+}
/*
* Our character device open function.
clear_bit(IDETAPE_PIPELINE_ERROR, &tape->flags);
/* Read block size and write protect status from drive. */
- idetape_get_blocksize_from_block_descriptor(drive);
+ ide_tape_get_bsize_from_bdesc(drive);
/* Set write protect flag if device is opened as read-only. */
if ((filp->f_flags & O_ACCMODE) == O_RDONLY)
{
struct idetape_id_gcw gcw;
struct hd_driveid *id = drive->id;
-#if IDETAPE_DEBUG_INFO
- unsigned short mask,i;
-#endif /* IDETAPE_DEBUG_INFO */
if (drive->id_read == 0)
return 1;
*((unsigned short *) &gcw) = id->config;
-#if IDETAPE_DEBUG_INFO
- printk(KERN_INFO "ide-tape: Dumping ATAPI Identify Device tape parameters\n");
- printk(KERN_INFO "ide-tape: Protocol Type: ");
- switch (gcw.protocol) {
- case 0: case 1: printk("ATA\n");break;
- case 2: printk("ATAPI\n");break;
- case 3: printk("Reserved (Unknown to ide-tape)\n");break;
- }
- printk(KERN_INFO "ide-tape: Device Type: %x - ",gcw.device_type);
- switch (gcw.device_type) {
- case 0: printk("Direct-access Device\n");break;
- case 1: printk("Streaming Tape Device\n");break;
- case 2: case 3: case 4: printk("Reserved\n");break;
- case 5: printk("CD-ROM Device\n");break;
- case 6: printk("Reserved\n");
- case 7: printk("Optical memory Device\n");break;
- case 0x1f: printk("Unknown or no Device type\n");break;
- default: printk("Reserved\n");
- }
- printk(KERN_INFO "ide-tape: Removable: %s",gcw.removable ? "Yes\n":"No\n");
- printk(KERN_INFO "ide-tape: Command Packet DRQ Type: ");
- switch (gcw.drq_type) {
- case 0: printk("Microprocessor DRQ\n");break;
- case 1: printk("Interrupt DRQ\n");break;
- case 2: printk("Accelerated DRQ\n");break;
- case 3: printk("Reserved\n");break;
- }
- printk(KERN_INFO "ide-tape: Command Packet Size: ");
- switch (gcw.packet_size) {
- case 0: printk("12 bytes\n");break;
- case 1: printk("16 bytes\n");break;
- default: printk("Reserved\n");break;
- }
- printk(KERN_INFO "ide-tape: Model: %.40s\n",id->model);
- printk(KERN_INFO "ide-tape: Firmware Revision: %.8s\n",id->fw_rev);
- printk(KERN_INFO "ide-tape: Serial Number: %.20s\n",id->serial_no);
- printk(KERN_INFO "ide-tape: Write buffer size: %d bytes\n",id->buf_size*512);
- printk(KERN_INFO "ide-tape: DMA: %s",id->capability & 0x01 ? "Yes\n":"No\n");
- printk(KERN_INFO "ide-tape: LBA: %s",id->capability & 0x02 ? "Yes\n":"No\n");
- printk(KERN_INFO "ide-tape: IORDY can be disabled: %s",id->capability & 0x04 ? "Yes\n":"No\n");
- printk(KERN_INFO "ide-tape: IORDY supported: %s",id->capability & 0x08 ? "Yes\n":"Unknown\n");
- printk(KERN_INFO "ide-tape: ATAPI overlap supported: %s",id->capability & 0x20 ? "Yes\n":"No\n");
- printk(KERN_INFO "ide-tape: PIO Cycle Timing Category: %d\n",id->tPIO);
- printk(KERN_INFO "ide-tape: DMA Cycle Timing Category: %d\n",id->tDMA);
- printk(KERN_INFO "ide-tape: Single Word DMA supported modes: ");
- for (i=0,mask=1;i<8;i++,mask=mask << 1) {
- if (id->dma_1word & mask)
- printk("%d ",i);
- if (id->dma_1word & (mask << 8))
- printk("(active) ");
- }
- printk("\n");
- printk(KERN_INFO "ide-tape: Multi Word DMA supported modes: ");
- for (i=0,mask=1;i<8;i++,mask=mask << 1) {
- if (id->dma_mword & mask)
- printk("%d ",i);
- if (id->dma_mword & (mask << 8))
- printk("(active) ");
- }
- printk("\n");
- if (id->field_valid & 0x0002) {
- printk(KERN_INFO "ide-tape: Enhanced PIO Modes: %s\n",
- id->eide_pio_modes & 1 ? "Mode 3":"None");
- printk(KERN_INFO "ide-tape: Minimum Multi-word DMA cycle per word: ");
- if (id->eide_dma_min == 0)
- printk("Not supported\n");
- else
- printk("%d ns\n",id->eide_dma_min);
-
- printk(KERN_INFO "ide-tape: Manufacturer\'s Recommended Multi-word cycle: ");
- if (id->eide_dma_time == 0)
- printk("Not supported\n");
- else
- printk("%d ns\n",id->eide_dma_time);
-
- printk(KERN_INFO "ide-tape: Minimum PIO cycle without IORDY: ");
- if (id->eide_pio == 0)
- printk("Not supported\n");
- else
- printk("%d ns\n",id->eide_pio);
-
- printk(KERN_INFO "ide-tape: Minimum PIO cycle with IORDY: ");
- if (id->eide_pio_iordy == 0)
- printk("Not supported\n");
- else
- printk("%d ns\n",id->eide_pio_iordy);
-
- } else
- printk(KERN_INFO "ide-tape: According to the device, fields 64-70 are not valid.\n");
-#endif /* IDETAPE_DEBUG_INFO */
-
/* Check that we can support this device */
- if (gcw.protocol !=2 )
- printk(KERN_ERR "ide-tape: Protocol is not ATAPI\n");
+ if (gcw.protocol != 2)
+ printk(KERN_ERR "ide-tape: Protocol (0x%02x) is not ATAPI\n",
+ gcw.protocol);
else if (gcw.device_type != 1)
- printk(KERN_ERR "ide-tape: Device type is not set to tape\n");
+ printk(KERN_ERR "ide-tape: Device type (0x%02x) is not set "
+ "to tape\n", gcw.device_type);
else if (!gcw.removable)
printk(KERN_ERR "ide-tape: The removable flag is not set\n");
else if (gcw.packet_size != 0) {
- printk(KERN_ERR "ide-tape: Packet size is not 12 bytes long\n");
- if (gcw.packet_size == 1)
- printk(KERN_ERR "ide-tape: Sorry, padding to 16 bytes is still not supported\n");
+ printk(KERN_ERR "ide-tape: Packet size (0x%02x) is not 12 "
+ "bytes long\n", gcw.packet_size);
} else
return 1;
return 0;
}
-/*
- * Use INQUIRY to get the firmware revision
- */
-static void idetape_get_inquiry_results (ide_drive_t *drive)
+static void idetape_get_inquiry_results(ide_drive_t *drive)
{
char *r;
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t pc;
- idetape_inquiry_result_t *inquiry;
-
+
idetape_create_inquiry_cmd(&pc);
if (idetape_queue_pc_tail(drive, &pc)) {
- printk(KERN_ERR "ide-tape: %s: can't get INQUIRY results\n", tape->name);
+ printk(KERN_ERR "ide-tape: %s: can't get INQUIRY results\n",
+ tape->name);
return;
}
- inquiry = (idetape_inquiry_result_t *) pc.buffer;
- memcpy(tape->vendor_id, inquiry->vendor_id, 8);
- memcpy(tape->product_id, inquiry->product_id, 16);
- memcpy(tape->firmware_revision, inquiry->revision_level, 4);
+ memcpy(tape->vendor_id, &pc.buffer[8], 8);
+ memcpy(tape->product_id, &pc.buffer[16], 16);
+ memcpy(tape->firmware_revision, &pc.buffer[32], 4);
+
ide_fixstring(tape->vendor_id, 10, 0);
ide_fixstring(tape->product_id, 18, 0);
ide_fixstring(tape->firmware_revision, 6, 0);
r = tape->firmware_revision;
if (*(r + 1) == '.')
- tape->firmware_revision_num = (*r - '0') * 100 + (*(r + 2) - '0') * 10 + *(r + 3) - '0';
- printk(KERN_INFO "ide-tape: %s <-> %s: %s %s rev %s\n", drive->name, tape->name, tape->vendor_id, tape->product_id, tape->firmware_revision);
+ tape->firmware_revision_num = (*r - '0') * 100 +
+ (*(r + 2) - '0') * 10 + *(r + 3) - '0';
+ printk(KERN_INFO "ide-tape: %s <-> %s: %s %s rev %s\n",
+ drive->name, tape->name, tape->vendor_id,
+ tape->product_id, tape->firmware_revision);
}
/*
- * idetape_get_mode_sense_results asks 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.
+ * 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.
*/
static void idetape_get_mode_sense_results (ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
idetape_pc_t pc;
- idetape_mode_parameter_header_t *header;
- idetape_capabilities_page_t *capabilities;
-
+ u8 *caps;
+ u8 speed, max_speed;
+
idetape_create_mode_sense_cmd(&pc, IDETAPE_CAPABILITIES_PAGE);
if (idetape_queue_pc_tail(drive, &pc)) {
- printk(KERN_ERR "ide-tape: Can't get tape parameters - assuming some default values\n");
+ printk(KERN_ERR "ide-tape: Can't get tape parameters - assuming"
+ " some default values\n");
tape->tape_block_size = 512;
- tape->capabilities.ctl = 52;
- tape->capabilities.speed = 450;
- tape->capabilities.buffer_size = 6 * 52;
+ put_unaligned(52, (u16 *)&tape->caps[12]);
+ put_unaligned(540, (u16 *)&tape->caps[14]);
+ put_unaligned(6*52, (u16 *)&tape->caps[16]);
return;
}
- header = (idetape_mode_parameter_header_t *) pc.buffer;
- capabilities = (idetape_capabilities_page_t *) (pc.buffer + sizeof(idetape_mode_parameter_header_t) + header->bdl);
+ caps = pc.buffer + 4 + pc.buffer[3];
- capabilities->max_speed = ntohs(capabilities->max_speed);
- capabilities->ctl = ntohs(capabilities->ctl);
- capabilities->speed = ntohs(capabilities->speed);
- capabilities->buffer_size = ntohs(capabilities->buffer_size);
+ /* convert to host order and save for later use */
+ speed = be16_to_cpu(*(u16 *)&caps[14]);
+ max_speed = be16_to_cpu(*(u16 *)&caps[8]);
- if (!capabilities->speed) {
- printk(KERN_INFO "ide-tape: %s: overriding capabilities->speed (assuming 650KB/sec)\n", drive->name);
- capabilities->speed = 650;
+ put_unaligned(max_speed, (u16 *)&caps[8]);
+ put_unaligned(be16_to_cpu(*(u16 *)&caps[12]), (u16 *)&caps[12]);
+ put_unaligned(speed, (u16 *)&caps[14]);
+ put_unaligned(be16_to_cpu(*(u16 *)&caps[16]), (u16 *)&caps[16]);
+
+ if (!speed) {
+ printk(KERN_INFO "ide-tape: %s: invalid tape speed "
+ "(assuming 650KB/sec)\n", drive->name);
+ put_unaligned(650, (u16 *)&caps[14]);
}
- if (!capabilities->max_speed) {
- printk(KERN_INFO "ide-tape: %s: overriding capabilities->max_speed (assuming 650KB/sec)\n", drive->name);
- capabilities->max_speed = 650;
+ if (!max_speed) {
+ printk(KERN_INFO "ide-tape: %s: invalid max_speed "
+ "(assuming 650KB/sec)\n", drive->name);
+ put_unaligned(650, (u16 *)&caps[8]);
}
- tape->capabilities = *capabilities; /* Save us a copy */
- if (capabilities->blk512)
+ memcpy(&tape->caps, caps, 20);
+ if (caps[7] & 0x02)
tape->tape_block_size = 512;
- else if (capabilities->blk1024)
+ else if (caps[7] & 0x04)
tape->tape_block_size = 1024;
-
-#if IDETAPE_DEBUG_INFO
- printk(KERN_INFO "ide-tape: Dumping the results of the MODE SENSE packet command\n");
- printk(KERN_INFO "ide-tape: Mode Parameter Header:\n");
- printk(KERN_INFO "ide-tape: Mode Data Length - %d\n",header->mode_data_length);
- printk(KERN_INFO "ide-tape: Medium Type - %d\n",header->medium_type);
- printk(KERN_INFO "ide-tape: Device Specific Parameter - %d\n",header->dsp);
- printk(KERN_INFO "ide-tape: Block Descriptor Length - %d\n",header->bdl);
-
- printk(KERN_INFO "ide-tape: Capabilities and Mechanical Status Page:\n");
- printk(KERN_INFO "ide-tape: Page code - %d\n",capabilities->page_code);
- printk(KERN_INFO "ide-tape: Page length - %d\n",capabilities->page_length);
- printk(KERN_INFO "ide-tape: Read only - %s\n",capabilities->ro ? "Yes":"No");
- printk(KERN_INFO "ide-tape: Supports reverse space - %s\n",capabilities->sprev ? "Yes":"No");
- printk(KERN_INFO "ide-tape: Supports erase initiated formatting - %s\n",capabilities->efmt ? "Yes":"No");
- printk(KERN_INFO "ide-tape: Supports QFA two Partition format - %s\n",capabilities->qfa ? "Yes":"No");
- printk(KERN_INFO "ide-tape: Supports locking the medium - %s\n",capabilities->lock ? "Yes":"No");
- printk(KERN_INFO "ide-tape: The volume is currently locked - %s\n",capabilities->locked ? "Yes":"No");
- printk(KERN_INFO "ide-tape: The device defaults in the prevent state - %s\n",capabilities->prevent ? "Yes":"No");
- printk(KERN_INFO "ide-tape: Supports ejecting the medium - %s\n",capabilities->eject ? "Yes":"No");
- printk(KERN_INFO "ide-tape: Supports error correction - %s\n",capabilities->ecc ? "Yes":"No");
- printk(KERN_INFO "ide-tape: Supports data compression - %s\n",capabilities->cmprs ? "Yes":"No");
- printk(KERN_INFO "ide-tape: Supports 512 bytes block size - %s\n",capabilities->blk512 ? "Yes":"No");
- printk(KERN_INFO "ide-tape: Supports 1024 bytes block size - %s\n",capabilities->blk1024 ? "Yes":"No");
- printk(KERN_INFO "ide-tape: Supports 32768 bytes block size / Restricted byte count for PIO transfers - %s\n",capabilities->blk32768 ? "Yes":"No");
- printk(KERN_INFO "ide-tape: Maximum supported speed in KBps - %d\n",capabilities->max_speed);
- printk(KERN_INFO "ide-tape: Continuous transfer limits in blocks - %d\n",capabilities->ctl);
- printk(KERN_INFO "ide-tape: Current speed in KBps - %d\n",capabilities->speed);
- printk(KERN_INFO "ide-tape: Buffer size - %d\n",capabilities->buffer_size*512);
-#endif /* IDETAPE_DEBUG_INFO */
-}
-
-/*
- * ide_get_blocksize_from_block_descriptor does a mode sense page 0 with block descriptor
- * and if it succeeds sets the tape block size with the reported value
- */
-static void idetape_get_blocksize_from_block_descriptor(ide_drive_t *drive)
-{
-
- idetape_tape_t *tape = drive->driver_data;
- idetape_pc_t pc;
- idetape_mode_parameter_header_t *header;
- idetape_parameter_block_descriptor_t *block_descrp;
-
- idetape_create_mode_sense_cmd(&pc, IDETAPE_BLOCK_DESCRIPTOR);
- if (idetape_queue_pc_tail(drive, &pc)) {
- printk(KERN_ERR "ide-tape: Can't get block descriptor\n");
- if (tape->tape_block_size == 0) {
- printk(KERN_WARNING "ide-tape: Cannot deal with zero block size, assume 32k\n");
- tape->tape_block_size = 32768;
- }
- return;
- }
- header = (idetape_mode_parameter_header_t *) pc.buffer;
- block_descrp = (idetape_parameter_block_descriptor_t *) (pc.buffer + sizeof(idetape_mode_parameter_header_t));
- tape->tape_block_size =( block_descrp->length[0]<<16) + (block_descrp->length[1]<<8) + block_descrp->length[2];
- tape->drv_write_prot = (header->dsp & 0x80) >> 7;
-
-#if IDETAPE_DEBUG_INFO
- printk(KERN_INFO "ide-tape: Adjusted block size - %d\n", tape->tape_block_size);
-#endif /* IDETAPE_DEBUG_INFO */
}
#ifdef CONFIG_IDE_PROC_FS
/*
* drive setting name read/write data type min max mul_factor div_factor data pointer set function
*/
- ide_add_setting(drive, "buffer", SETTING_READ, TYPE_SHORT, 0, 0xffff, 1, 2, &tape->capabilities.buffer_size, NULL);
+ ide_add_setting(drive, "buffer", SETTING_READ, TYPE_SHORT, 0, 0xffff,
+ 1, 2, (u16 *)&tape->caps[16], NULL);
ide_add_setting(drive, "pipeline_min", SETTING_RW, TYPE_INT, 1, 0xffff, tape->stage_size / 1024, 1, &tape->min_pipeline, NULL);
ide_add_setting(drive, "pipeline", SETTING_RW, TYPE_INT, 1, 0xffff, tape->stage_size / 1024, 1, &tape->max_stages, NULL);
ide_add_setting(drive, "pipeline_max", SETTING_RW, TYPE_INT, 1, 0xffff, tape->stage_size / 1024, 1, &tape->max_pipeline, NULL);
ide_add_setting(drive, "pipeline_used", SETTING_READ, TYPE_INT, 0, 0xffff, tape->stage_size / 1024, 1, &tape->nr_stages, NULL);
ide_add_setting(drive, "pipeline_pending", SETTING_READ, TYPE_INT, 0, 0xffff, tape->stage_size / 1024, 1, &tape->nr_pending_stages, NULL);
- ide_add_setting(drive, "speed", SETTING_READ, TYPE_SHORT, 0, 0xffff, 1, 1, &tape->capabilities.speed, NULL);
+ ide_add_setting(drive, "speed", SETTING_READ, TYPE_SHORT, 0, 0xffff,
+ 1, 1, (u16 *)&tape->caps[14], NULL);
ide_add_setting(drive, "stage", SETTING_READ, TYPE_INT, 0, 0xffff, 1, 1024, &tape->stage_size, NULL);
ide_add_setting(drive, "tdsc", SETTING_RW, TYPE_INT, IDETAPE_DSC_RW_MIN, IDETAPE_DSC_RW_MAX, 1000, HZ, &tape->best_dsc_rw_frequency, NULL);
ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL);
struct idetape_id_gcw gcw;
int stage_size;
struct sysinfo si;
+ u16 *ctl = (u16 *)&tape->caps[12];
spin_lock_init(&tape->spinlock);
drive->dsc_overlap = 1;
-#ifdef CONFIG_BLK_DEV_IDEPCI
- if (HWIF(drive)->pci_dev != NULL) {
- /*
- * These two ide-pci host adapters appear to need DSC overlap disabled.
- * This probably needs further analysis.
- */
- if ((HWIF(drive)->pci_dev->device == PCI_DEVICE_ID_ARTOP_ATP850UF) ||
- (HWIF(drive)->pci_dev->device == PCI_DEVICE_ID_TTI_HPT343)) {
- printk(KERN_INFO "ide-tape: %s: disabling DSC overlap\n", tape->name);
- drive->dsc_overlap = 0;
- }
+ if (drive->hwif->host_flags & IDE_HFLAG_NO_DSC) {
+ printk(KERN_INFO "ide-tape: %s: disabling DSC overlap\n",
+ tape->name);
+ drive->dsc_overlap = 0;
}
-#endif /* CONFIG_BLK_DEV_IDEPCI */
/* Seagate Travan drives do not support DSC overlap. */
if (strstr(drive->id->model, "Seagate STT3401"))
drive->dsc_overlap = 0;
idetape_get_inquiry_results(drive);
idetape_get_mode_sense_results(drive);
- idetape_get_blocksize_from_block_descriptor(drive);
+ ide_tape_get_bsize_from_bdesc(drive);
tape->user_bs_factor = 1;
- tape->stage_size = tape->capabilities.ctl * tape->tape_block_size;
+ tape->stage_size = *ctl * tape->tape_block_size;
while (tape->stage_size > 0xffff) {
printk(KERN_NOTICE "ide-tape: decreasing stage size\n");
- tape->capabilities.ctl /= 2;
- tape->stage_size = tape->capabilities.ctl * tape->tape_block_size;
+ *ctl /= 2;
+ tape->stage_size = *ctl * tape->tape_block_size;
}
stage_size = tape->stage_size;
tape->pages_per_stage = stage_size / PAGE_SIZE;
tape->excess_bh_size = PAGE_SIZE - stage_size % PAGE_SIZE;
}
- /*
- * Select the "best" DSC read/write polling frequency
- * and pipeline size.
- */
- speed = max(tape->capabilities.speed, tape->capabilities.max_speed);
+ /* Select the "best" DSC read/write polling freq and pipeline size. */
+ speed = max(*(u16 *)&tape->caps[14], *(u16 *)&tape->caps[8]);
tape->max_stages = speed * 1000 * 10 / tape->stage_size;
tape->max_stages = tape->min_pipeline = tape->max_pipeline = 1;
t1 = (tape->stage_size * HZ) / (speed * 1000);
- tmid = (tape->capabilities.buffer_size * 32 * HZ) / (speed * 125);
+ tmid = (*(u16 *)&tape->caps[16] * 32 * HZ) / (speed * 125);
tn = (IDETAPE_FIFO_THRESHOLD * tape->stage_size * HZ) / (speed * 1000);
if (tape->max_stages)
tape->best_dsc_rw_frequency = max_t(unsigned long, min_t(unsigned long, t, IDETAPE_DSC_RW_MAX), IDETAPE_DSC_RW_MIN);
printk(KERN_INFO "ide-tape: %s <-> %s: %dKBps, %d*%dkB buffer, "
"%dkB pipeline, %lums tDSC%s\n",
- drive->name, tape->name, tape->capabilities.speed,
- (tape->capabilities.buffer_size * 512) / tape->stage_size,
+ drive->name, tape->name, *(u16 *)&tape->caps[14],
+ (*(u16 *)&tape->caps[16] * 512) / tape->stage_size,
tape->stage_size / 1024,
tape->max_stages * tape->stage_size / 1024,
tape->best_dsc_rw_frequency * 1000 / HZ,
drive->dsc_overlap = 0;
drive->driver_data = NULL;
- class_device_destroy(idetape_sysfs_class,
- MKDEV(IDETAPE_MAJOR, tape->minor));
- class_device_destroy(idetape_sysfs_class,
- MKDEV(IDETAPE_MAJOR, tape->minor + 128));
+ device_destroy(idetape_sysfs_class, MKDEV(IDETAPE_MAJOR, tape->minor));
+ device_destroy(idetape_sysfs_class, MKDEV(IDETAPE_MAJOR, tape->minor + 128));
idetape_devs[tape->minor] = NULL;
g->private_data = NULL;
put_disk(g);
idetape_setup(drive, tape, minor);
- class_device_create(idetape_sysfs_class, NULL,
- MKDEV(IDETAPE_MAJOR, minor), &drive->gendev, "%s", tape->name);
- class_device_create(idetape_sysfs_class, NULL,
- MKDEV(IDETAPE_MAJOR, minor + 128), &drive->gendev, "n%s", tape->name);
+ device_create(idetape_sysfs_class, &drive->gendev,
+ MKDEV(IDETAPE_MAJOR, minor), "%s", tape->name);
+ device_create(idetape_sysfs_class, &drive->gendev,
+ MKDEV(IDETAPE_MAJOR, minor + 128), "n%s", tape->name);
g->fops = &idetape_block_ops;
ide_register_region(g);
git.openpandora.org / pandora-kernel.git / blobdiff