login
Search
This time:
* ide-floppy/ide-tape revamps similar to previous ide-cd redux
(Borislav Petkov)
* next part of IDE probing code re-organization saga
(that would be me)
* misc cleanups/fixes
As a result drivers/ide/ shrinks by ~1300 LOC...
Linus, please pull from:
master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6.git/
to receive the following updates:
Documentation/ide/ChangeLog.ide-tape.1995-2002 | 257 +++++
Documentation/ide/ide-tape.txt | 146 +++
drivers/ide/Kconfig | 3 +-
drivers/ide/arm/bast-ide.c | 20 +-
drivers/ide/arm/icside.c | 25 +-
drivers/ide/arm/ide_arm.c | 2 +-
drivers/ide/arm/rapide.c | 4 +-
drivers/ide/cris/ide-cris.c | 24 +-
drivers/ide/h8300/ide-h8300.c | 2 +-
drivers/ide/ide-acpi.c | 63 +-
drivers/ide/ide-cd.c | 2 -
drivers/ide/ide-dma.c | 20 +
drivers/ide/ide-floppy.c | 1438 +++++++++---------------
drivers/ide/ide-generic.c | 2 +-
drivers/ide/ide-iops.c | 109 +--
drivers/ide/ide-pnp.c | 9 +-
drivers/ide/ide-probe.c | 278 ++++--
drivers/ide/ide-proc.c | 7 +-
drivers/ide/ide-tape.c | 1240 ++++-----------------
drivers/ide/ide-taskfile.c | 11 +-
drivers/ide/ide.c | 77 +-
drivers/ide/legacy/ali14xx.c | 24 +-
drivers/ide/legacy/buddha.c | 2 +-
drivers/ide/legacy/dtc2278.c | 36 +-
drivers/ide/legacy/falconide.c | 2 +-
drivers/ide/legacy/gayle.c | 2 +-
drivers/ide/legacy/ht6560b.c | 48 +-
drivers/ide/legacy/ide-cs.c | 29 +-
drivers/ide/legacy/ide_platform.c | 4 +-
drivers/ide/legacy/macide.c | 12 +-
drivers/ide/legacy/q40ide.c | 2 +-
drivers/ide/legacy/qd65xx.c | 67 +-
drivers/ide/legacy/umc8672.c | 24 +-
drivers/ide/mips/au1xxx-ide.c | 37 +-
drivers/ide/mips/swarm.c | 2 +-
drivers/ide/pci/aec62xx.c | 26 +-
drivers/ide/pci/alim15x3.c | 6 +-
drivers/ide/pci/amd74xx.c | 21 +-
drivers/ide/pci/atiixp.c | 30 +-
drivers/ide/pci/cmd640.c | 33 +-
drivers/ide/pci/cmd64x.c | 6 +-
drivers/ide/pci/cs5520.c | 12 +-
drivers/ide/pci/cs5530.c | 8 +-
drivers/ide/pci/cs5535.c | 10 +-
drivers/ide/pci/cy82c693.c | 1 -
drivers/ide/pci/delkin_cb.c | 41 +-
drivers/ide/pci/generic.c | 7 -
drivers/ide/pci/hpt34x.c | 7 -
drivers/ide/pci/hpt366.c | 89 +-
drivers/ide/pci/it8213.c | 24 +-
drivers/ide/pci/it821x.c | 8 +-
drivers/ide/pci/jmicron.c | 9 +-
drivers/ide/pci/ns87415.c | 4 -
drivers/ide/pci/opti621.c | 15 +-
drivers/ide/pci/pdc202xx_new.c | 14 +-
drivers/ide/pci/pdc202xx_old.c | 17 +-
drivers/ide/pci/piix.c | 9 +-
drivers/ide/pci/rz1000.c | 10 +-
drivers/ide/pci/sc1200.c | 8 +-
drivers/ide/pci/scc_pata.c | 10 +-
drivers/ide/pci/serverworks.c | 11 +-
drivers/ide/pci/sgiioc4.c | 20 +-
drivers/ide/pci/siimage.c | 31 +-
drivers/ide/pci/sis5513.c | 14 +-
drivers/ide/pci/sl82c105.c | 6 -
drivers/ide/pci/slc90e66.c | 26 +-
drivers/ide/pci/tc86c001.c | 24 +-
drivers/ide/pci/triflex.c | 5 -
drivers/ide/pci/trm290.c | 7 +-
drivers/ide/pci/via82cxxx.c | 10 +-
drivers/ide/ppc/mpc8xx.c | 2 +-
drivers/ide/ppc/pmac.c | 84 +-
drivers/ide/setup-pci.c | 77 +-
drivers/macintosh/mediabay.c | 2 +-
drivers/scsi/ide-scsi.c | 9 +-
include/linux/hdreg.h | 4 +-
include/linux/ide.h | 51 +-
77 files changed, 1989 insertions(+), 2849 deletions(-)
create mode 100644 Documentation/ide/ChangeLog.ide-tape.1995-2002
create mode 100644 Documentation/ide/ide-tape.txt
Alan Cox (1):
pdc202xx_old: remove surplus initialiser
Bartlomiej Zolnierkiewicz (50):
dtc2278: fix ->io_32bit handling
au1xxx-ide: fix ->io_32bit handling
atiixp/cs5535/scc_pata: fix "idex=ata66" parameter handling
macide: remove drive->capacity64 quirk
ide: always set DMA masks in ide_pci_setup_ports()
ide: separate PCI specific init from generic init in ide_pci_setup_ports()
ide: add struct ide_port_info instances to legacy host drivers
ide: add ->cable_detect method to ide_hwif_t
ide: remove needless includes from PCI host drivers
ide: remove redundant hwif->present check from ide_register_hw()
ide: remove redundant init_hwif_default() call from ide_register_hw()
ide: add 'init_default' and 'restore' arguments to ide_unregister()
ide: add ide_deprecated_find_port() helper
ide: fix ide_unregister() usage in host drivers
ide: factor out code initializing devices from ide_init_port()
ide: add IDE_HFLAG_NO_{IO32_BIT,UNMASK_IRQS} host flags
ide: add ->port_init_devs method to ide_hwif_t
ide: remove incorrect init_gendisk() comment
ide: skip not present devices in init_gendisk()
ide: move blk_register_region() call out from init_gendisk()
ide: call init_gendisk() after ide_acpi_init()
ide: merge init_gendisk() into hwif_register_devices()
ide: move hwif->rqsize init from ide_init_queue() to init_irq()
ide: factor out adding drive to hwgroup from init_irq()
ide: factor out devices setup from init_irq()
ide: move ide_acpi_init() call to ide_device_add_all()
ide-acpi: remove needless exports
ide-acpi: remove dead code from do_drive_get_GTF()
ide: factor out devices setup from ide_acpi_init()
ide: move hwif->present check out from ide_proc_register_port()
ide: move create_proc_ide_drives() call to ide_device_add_all()
ide-tape: use ide_execute_command()
ide-scsi: use ide_execute_command()
trm290: use ide_execute_command()
ide-cris: use ide_execute_command()
ide-probe: remove needless Status register reads
ide: remove unused ->auto_poll field from ide_hwif_t
ide: convert ->straight8 field in ide_hwif_t to bit flag
ide: remove ->nice0 and ->nice2 fields from ide_drive_t
ide: remove SATA_*_REG macros
ide: use __ide_set_handler() in ide_execute_command()
ide-scsi: remove needless SELECT_DRIVE() call
ide: unexport SELECT_DRIVE()
ide: remove set_transfer()
ide: remove ide_ata66_check()
ide: move drive->crc_count check out from check_dma_crc()
ide: remove ide_auto_reduce_xfer()
ide: move check_dma_crc() to ide-dma.c
ide-cs: use ide_std_init_ports()
ide-tape: dump gcw fields on error in idetape_identify_device()
Borislav Petkov (44):
ide-floppy: convert to generic packet commands
ide-floppy: replace ntoh{s,l} and hton{s,l} calls with the generic byteorder
ide-floppy: remove unnecessary ->handler != NULL check
ide-floppy: disambiguate function names
ide-floppy: include the proper headers
ide-floppy: cleanup and unify debugging macro calls
ide-floppy: remove struct idefloppy_capabilities_page
ide-floppy: remove struct idefloppy_inquiry_result
ide-floppy: remove struct idefloppy_request_sense_result
ide-floppy: remove struct idefloppy_mode_parameter_header
ide-floppy: remove struct idefloppy_flexible_disk_page
ide-floppy: remove struct idefloppy_capacity_descriptor
ide-floppy: factor out ioctl handlers from idefloppy_ioctl()
ide-floppy: report DMA handling in idefloppy_pc_intr() properly
ide-floppy: mv idefloppy_{should_,}report_error
ide-floppy: remove IDEFLOPPY_DEBUG_BUGS macro
ide-floppy: use an xfer_func_t and io_buf_t typedefs in order to unify rw
ide-floppy: merge idefloppy_{input,output}_buffers
ide-floppy: remove unused IDEFLOPPY_USE_READ12
ide-floppy: remove IDEFLOPPY_DEBUG_INFO
ide-floppy: remove unused flag PC_ABORT
ide-floppy: remove atomic test_*bit macros
ide-floppy: fix most of the remaining checkpatch.pl issues
ide-floppy: bump driver version number
ide-tape: move historical changelog to Documentation/ide/ChangeLog.ide-tape.1995-2002
ide-tape: remove dead code
ide-tape: remove struct idetape_request_sense_result_t
ide-tape: remove struct idetape_mode_parameter_header_t
ide-tape: remove IDETAPE_DEBUG_INFO
ide-tape: remove IDETAPE_DEBUG_BUGS
ide-tape: remove struct idetape_capabilities_page_t
ide-tape: remove struct idetape_inquiry_result_t
ide-tape: remove struct idetape_data_compression_page_t
ide-tape: remove struct idetape_medium_partition_page_t
ide-tape: remove struct idetape_parameter_block_descriptor_t
ide-tape: remove structs os_partition_t, os_dat_entry_t, os_dat_t
ide-tape: remove struct idetape_block_size_page_t
ide-tape: use generic scsi commands
ide-tape: remove EXPERIMENTAL driver status
ide-tape: use generic byteorder macros
ide-tape: remove unused sense packet commands.
ide-tape: make function name more accurate
ide-tape: remove mtio.h related comments
ide-tape: remove idetape_config_t typedef
diff --git a/Documentation/ide/ChangeLog.ide-tape.1995-2002 b/Documentation/ide/ChangeLog.ide-tape.1995-2002
new file mode 100644
index 0000000..877fac8
--- /dev/null
+++ b/Documentation/ide/ChangeLog.ide-tape.1995-2002
@@ -0,0 +1,257 @@
+/*
+ * 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.
+ */
diff --git a/Documentation/ide/ide-tape.txt b/Documentation/ide/ide-tape.txt
new file mode 100644
index 0000000..658f271
--- /dev/null
+++ b/Documentation/ide/ide-tape.txt
@@ -0,0 +1,146 @@
+/*
+ * IDE ATAPI streaming tape driver.
+ *
+ * This driver is a part of the Linux ide driver.
+ *
+ * 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.
+ * ...
+ *
+ * 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.
+ *
+ * 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.
+ */
diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index e42a465..45b26ed 100644
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -216,8 +216,7 @@ config BLK_DEV_IDECD_VERBOSE_ERRORS
memory, though.
config BLK_DEV_IDETAPE
- tristate "Include IDE/ATAPI TAPE support (EXPERIMENTAL)"
- depends on EXPERIMENTAL
+ tristate "Include IDE/ATAPI TAPE support"
help
If you have an IDE tape drive using the ATAPI protocol, say Y.
ATAPI is a newer protocol used by IDE tape and CD-ROM drives,
diff --git a/drivers/ide/arm/bast-ide.c b/drivers/ide/arm/bast-ide.c
index 037300f..0e7574c 100644
--- a/drivers/ide/arm/bast-ide.c
+++ b/drivers/ide/arm/bast-ide.c
@@ -28,8 +28,10 @@ static int __init
bastide_register(unsigned int base, unsigned int aux, int irq,
ide_hwif_t **hwif)
{
+ ide_hwif_t *hwif;
hw_regs_t hw;
int i;
+ u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
memset(&hw, 0, sizeof(hw));
@@ -44,8 +46,24 @@ bastide_register(unsigned int base, unsigned int aux, int irq,
hw.io_ports[IDE_CONTROL_OFFSET] = aux + (6 * 0x20);
hw.irq = irq;
- ide_register_hw(&hw, NULL, hwif);
+ hwif = ide_deprecated_find_port(hw.io_ports[IDE_DATA_OFFSET]);
+ if (hwif == NULL)
+ goto out;
+ i = hwif->index;
+
+ if (hwif->present)
+ ide_unregister(i, 0, 0);
+ else if (!hwif->hold)
+ ide_init_port_data(hwif, i);
+
+ ide_init_port_hw(hwif, &hw);
+ hwif->quirkproc = NULL;
+
+ idx[0] = i;
+
+ ide_device_add(idx, NULL);
+out:
return 0;
}
diff --git a/drivers/ide/arm/icside.c b/drivers/ide/arm/icside.c
index 8d2cc47..fb00f38 100644
--- a/drivers/ide/arm/icside.c
+++ b/drivers/ide/arm/icside.c
@@ -377,9 +377,6 @@ static void icside_dma_lost_irq(ide_drive_t *drive)
static void icside_dma_init(ide_hwif_t *hwif)
{
- hwif->mwdma_mask = 7; /* MW0..2 */
- hwif->swdma_mask = 7; /* SW0..2 */
-
hwif->dmatable_cpu = NULL;
hwif->dmatable_dma = 0;
hwif->set_dma_mode = icside_set_dma_mode;
@@ -459,11 +456,19 @@ icside_register_v5(struct icside_state *state, struct expansion_card *ec)
idx[0] = hwif->index;
- ide_device_add(idx);
+ ide_device_add(idx, NULL);
return 0;
}
+static const struct ide_port_info icside_v6_port_info __initdata = {
+ .host_flags = IDE_HFLAG_SERIALIZE |
+ IDE_HFLAG_NO_DMA | /* no SFF-style DMA */
+ IDE_HFLAG_NO_AUTOTUNE,
+ .mwdma_mask = ATA_MWDMA2,
+ .swdma_mask = ATA_SWDMA2,
+};
+
static int __init
icside_register_v6(struct icside_state *state, struct expansion_card *ec)
{
@@ -472,6 +477,7 @@ icside_register_v6(struct icside_state *state, struct expansion_card *ec)
unsigned int sel = 0;
int ret;
u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
+ struct ide_port_info d = icside_v6_port_info;
ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
if (!ioc_base) {
@@ -521,30 +527,25 @@ icside_register_v6(struct icside_state *state, struct expansion_card *ec)
state->hwif[1] = mate;
hwif->maskproc = icside_maskproc;
- hwif->channel = 0;
hwif->hwif_data = state;
- hwif->mate = mate;
- hwif->serialized = 1;
hwif->config_data = (unsigned long)ioc_base;
hwif->select_data = sel;
mate->maskproc = icside_maskproc;
- mate->channel = 1;
mate->hwif_data = state;
- mate->mate = hwif;
- mate->serialized = 1;
mate->config_data = (unsigned long)ioc_base;
mate->select_data = sel | 1;
if (ec->dma != NO_DMA && !request_dma(ec->dma, hwif->name)) {
icside_dma_init(hwif);
icside_dma_init(mate);
- }
+ } else
+ d.mwdma_mask = d.swdma_mask = 0;
idx[0] = hwif->index;
idx[1] = mate->index;
- ide_device_add(idx);
+ ide_device_add(idx, &d);
return 0;
diff --git a/drivers/ide/arm/ide_arm.c b/drivers/ide/arm/ide_arm.c
index 60f2497..43a70e9 100644
--- a/drivers/ide/arm/ide_arm.c
+++ b/drivers/ide/arm/ide_arm.c
@@ -39,7 +39,7 @@ static int __init ide_arm_init(void)
ide_init_port_hw(hwif, &hw);
idx[0] = hwif->index;
- ide_device_add(idx);
+ ide_device_add(idx, NULL);
}
return 0;
diff --git a/drivers/ide/arm/rapide.c b/drivers/ide/arm/rapide.c
index c8b6581..efba00d 100644
--- a/drivers/ide/arm/rapide.c
+++ b/drivers/ide/arm/rapide.c
@@ -58,7 +58,7 @@ rapide_probe(struct expansion_card *ec, const struct ecard_id *id)
idx[0] = hwif->index;
- ide_device_add(idx);
+ ide_device_add(idx, NULL);
ecard_set_drvdata(ec, hwif);
goto out;
@@ -76,7 +76,7 @@ static void __devexit rapide_remove(struct expansion_card *ec)
ecard_set_drvdata(ec, NULL);
- ide_unregister(hwif->index);
+ ide_unregister(hwif->index, 0, 0);
ecard_release_resources(ec);
}
diff --git a/drivers/ide/cris/ide-cris.c b/drivers/ide/cris/ide-cris.c
index 0640a38..00587a8 100644
--- a/drivers/ide/cris/ide-cris.c
+++ b/drivers/ide/cris/ide-cris.c
@@ -753,6 +753,15 @@ static void cris_set_dma_mode(ide_drive_t *drive, const u8 speed)
cris_ide_set_speed(TYPE_DMA, 0, strobe, hold);
}
+static const struct ide_port_info cris_port_info __initdata = {
+ .chipset = ide_etrax100,
+ .host_flags = IDE_HFLAG_NO_ATAPI_DMA |
+ IDE_HFLAG_NO_DMA, /* no SFF-style DMA */
+ .pio_mask = ATA_PIO4,
+ .udma_mask = cris_ultra_mask,
+ .mwdma_mask = ATA_MWDMA2,
+};
+
static int __init init_e100_ide(void)
{
hw_regs_t hw;
@@ -780,7 +789,6 @@ static int __init init_e100_ide(void)
ide_init_port_data(hwif, hwif->index);
ide_init_port_hw(hwif, &hw);
hwif->mmio = 1;
- hwif->chipset = ide_etrax100;
hwif->set_pio_mode = &cris_set_pio_mode;
hwif->set_dma_mode = &cris_set_dma_mode;
hwif->ata_input_data = &cris_ide_input_data;
@@ -799,12 +807,6 @@ static int __init init_e100_ide(void)
hwif->INB = &cris_ide_inb;
hwif->INW = &cris_ide_inw;
hwif->cbl = ATA_CBL_PATA40;
- hwif->host_flags |= IDE_HFLAG_NO_ATAPI_DMA;
- hwif->pio_mask = ATA_PIO4,
- hwif->drives[0].autotune = 1;
- hwif->drives[1].autotune = 1;
- hwif->ultra_mask = cris_ultra_mask;
- hwif->mwdma_mask = 0x07; /* Multiword DMA 0-2 */
idx[h] = hwif->index;
}
@@ -820,7 +822,7 @@ static int __init init_e100_ide(void)
cris_ide_set_speed(TYPE_DMA, 0, ATA_DMA2_STROBE, ATA_DMA2_HOLD);
cris_ide_set_speed(TYPE_UDMA, ATA_UDMA2_CYC, ATA_UDMA2_DVS, 0);
- ide_device_add(idx);
+ ide_device_add(idx, &cris_port_info);
return 0;
}
@@ -1032,11 +1034,7 @@ static int cris_dma_setup(ide_drive_t *drive)
static void cris_dma_exec_cmd(ide_drive_t *drive, u8 command)
{
- /* set the irq handler which will finish the request when DMA is done */
- ide_set_handler(drive, &cris_dma_intr, WAIT_CMD, NULL);
-
- /* issue cmd to drive */
- cris_ide_outb(command, IDE_COMMAND_REG);
+ ide_execute_command(drive, command, &cris_dma_intr, WAIT_CMD, NULL);
}
static void cris_dma_start(ide_drive_t *drive)
diff --git a/drivers/ide/h8300/ide-h8300.c b/drivers/ide/h8300/ide-h8300.c
index 0243295..520aec0 100644
--- a/drivers/ide/h8300/ide-h8300.c
+++ b/drivers/ide/h8300/ide-h8300.c
@@ -114,7 +114,7 @@ static int __init h8300_ide_init(void)
idx[0] = index;
- ide_device_add(idx);
+ ide_device_add(idx, NULL);
return 0;
diff --git a/drivers/ide/ide-acpi.c b/drivers/ide/ide-acpi.c
index 68bc618..25aaeae 100644
--- a/drivers/ide/ide-acpi.c
+++ b/drivers/ide/ide-acpi.c
@@ -39,7 +39,6 @@ struct GTM_buffer {
};
struct ide_acpi_drive_link {
- ide_drive_t *drive;
acpi_handle obj_handle;
u8 idbuff[512];
};
@@ -280,16 +279,6 @@ static int do_drive_get_GTF(ide_drive_t *drive,
port = hwif->channel ? drive->dn - 2: drive->dn;
- if (!drive->acpidata) {
- if (port == 0) {
- drive->acpidata = &hwif->acpidata->master;
- hwif->acpidata->master.drive = drive;
- } else {
- drive->acpidata = &hwif->acpidata->slave;
- hwif->acpidata->slave.drive = drive;
- }
- }
-
DEBPRINT("ENTER: %s at %s, port#: %d, hard_port#: %d\n",
hwif->name, dev->bus_id, port, hwif->channel);
@@ -494,7 +483,6 @@ int ide_acpi_exec_tfs(ide_drive_t *drive)
return ret;
}
-EXPORT_SYMBOL_GPL(ide_acpi_exec_tfs);
/**
* ide_acpi_get_timing - get the channel (controller) timings
@@ -580,7 +568,6 @@ void ide_acpi_get_timing(ide_hwif_t *hwif)
kfree(output.pointer);
}
-EXPORT_SYMBOL_GPL(ide_acpi_get_timing);
/**
* ide_acpi_push_timing - set the channel (controller) timings
@@ -634,7 +621,6 @@ void ide_acpi_push_timing(ide_hwif_t *hwif)
}
DEBPRINT("_STM status: %d\n", status);
}
-EXPORT_SYMBOL_GPL(ide_acpi_push_timing);
/**
* ide_acpi_set_state - set the channel power state
@@ -688,11 +674,6 @@ void ide_acpi_set_state(ide_hwif_t *hwif, int on)
*/
void ide_acpi_init(ide_hwif_t *hwif)
{
- int unit;
- int err;
- struct ide_acpi_drive_link *master;
- struct ide_acpi_drive_link *slave;
-
ide_acpi_blacklist();
hwif->acpidata = kzalloc(sizeof(struct ide_acpi_hwif_link), GFP_KERNEL);
@@ -704,40 +685,38 @@ void ide_acpi_init(ide_hwif_t *hwif)
DEBPRINT("no ACPI object for %s found\n", hwif->name);
kfree(hwif->acpidata);
hwif->acpidata = NULL;
- return;
}
+}
+
+void ide_acpi_port_init_devices(ide_hwif_t *hwif)
+{
+ ide_drive_t *drive;
+ int i, err;
+
+ if (hwif->acpidata == NULL)
+ return;
/*
* The ACPI spec mandates that we send information
* for both drives, regardless whether they are connected
* or not.
*/
- hwif->acpidata->master.drive = &hwif->drives[0];
hwif->drives[0].acpidata = &hwif->acpidata->master;
- master = &hwif->acpidata->master;
-
- hwif->acpidata->slave.drive = &hwif->drives[1];
hwif->drives[1].acpidata = &hwif->acpidata->slave;
- slave = &hwif->acpidata->slave;
-
/*
* Send IDENTIFY for each drive
*/
- if (master->drive->present) {
- err = taskfile_lib_get_identify(master->drive, master->idbuff);
- if (err) {
- DEBPRINT("identify device %s failed (%d)\n",
- master->drive->name, err);
- }
- }
+ for (i = 0; i < MAX_DRIVES; i++) {
+ drive = &hwif->drives[i];
+
+ if (!drive->present)
+ continue;
- if (slave->drive->present) {
- err = taskfile_lib_get_identify(slave->drive, slave->idbuff);
- if (err) {
+ err = taskfile_lib_get_identify(drive, drive->acpidata->idbuff);
+ if (err)
DEBPRINT("identify device %s failed (%d)\n",
- slave->drive->name, err);
- }
+ drive->name, err);
}
if (ide_noacpionboot) {
@@ -753,13 +732,11 @@ void ide_acpi_init(ide_hwif_t *hwif)
ide_acpi_get_timing(hwif);
ide_acpi_push_timing(hwif);
- for (unit = 0; unit < MAX_DRIVES; ++unit) {
- ide_drive_t *drive = &hwif->drives[unit];
+ for (i = 0; i < MAX_DRIVES; i++) {
+ drive = &hwif->drives[i];
- if (drive->present) {
+ if (drive->present)
/* Execute ACPI startup code */
ide_acpi_exec_tfs(drive);
- }
}
}
-EXPORT_SYMBOL_GPL(ide_acpi_init);
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 23074e8..ee4d458 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -604,8 +604,6 @@ static ide_startstop_t cdrom_transfer_packet_command (ide_drive_t *drive,
* Block read functions.
*/
-typedef void (xfer_func_t)(ide_drive_t *, void *, u32);
-
static void ide_cd_pad_transfer(ide_drive_t *drive, xfer_func_t *xf, int len)
{
while (len > 0) {
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c
index 7beaf1e..3cf59f2 100644
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -819,6 +819,26 @@ int ide_set_dma(ide_drive_t *drive)
return 0;
}
+void ide_check_dma_crc(ide_drive_t *drive)
+{
+ u8 mode;
+
+ ide_dma_off_quietly(drive);
+ drive->crc_count = 0;
+ mode = drive->current_speed;
+ /*
+ * Don't try non Ultra-DMA modes without iCRC's. Force the
+ * device to PIO and make the user enable SWDMA/MWDMA modes.
+ */
+ if (mode > XFER_UDMA_0 && mode <= XFER_UDMA_7)
+ mode--;
+ else
+ mode = XFER_PIO_4;
+ ide_set_xfer_rate(drive, mode);
+ if (drive->current_speed >= XFER_SW_DMA_0)
+ ide_dma_on(drive);
+}
+
#ifdef CONFIG_BLK_DEV_IDEDMA_PCI
void ide_dma_lost_irq (ide_drive_t *drive)
{
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 3512637..f8fe6ee 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -4,11 +4,6 @@
* Copyright (C) 1996-1999 Gadi Oxman <gadio@netvision.net.il>
* Copyright (C) 2000-2002 Paul Bristow <paul@paulbristow.net>
* Copyright (C) 2005 Bartlomiej Zolnierkiewicz
- */
-
-/*
- * The driver currently doesn't have any fancy features, just the bare
- * minimum read/write support.
*
* This driver supports the following IDE floppy drives:
*
@@ -20,7 +15,7 @@
* Documentation/ide/ChangeLog.ide-floppy.1996-2002
*/
-#define IDEFLOPPY_VERSION "0.99.newide"
+#define IDEFLOPPY_VERSION "1.00"
#include <linux/module.h>
#include <linux/types.h>
@@ -42,179 +37,91 @@
#include <scsi/scsi_ioctl.h>
#include <asm/byteorder.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
+#include <linux/irq.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
#include <asm/unaligned.h>
-/*
- * The following are used to debug the driver.
- */
+/* define to see debug info */
#define IDEFLOPPY_DEBUG_LOG 0
-#define IDEFLOPPY_DEBUG_INFO 0
-#define IDEFLOPPY_DEBUG_BUGS 1
/* #define IDEFLOPPY_DEBUG(fmt, args...) printk(KERN_INFO fmt, ## args) */
-#define IDEFLOPPY_DEBUG( fmt, args... )
+#define IDEFLOPPY_DEBUG(fmt, args...)
#if IDEFLOPPY_DEBUG_LOG
-#define debug_log printk
+#define debug_log(fmt, args...) \
+ printk(KERN_INFO "ide-floppy: " fmt, ## args)
#else
-#define debug_log(fmt, args... ) do {} while(0)
+#define debug_log(fmt, args...) do {} while (0)
#endif
-/*
- * Some drives require a longer irq timeout.
- */
+/* Some drives require a longer irq timeout. */
#define IDEFLOPPY_WAIT_CMD (5 * WAIT_CMD)
/*
- * After each failed packet command we issue a request sense command
- * and retry the packet command IDEFLOPPY_MAX_PC_RETRIES times.
+ * After each failed packet command we issue a request sense command and retry
+ * the packet command IDEFLOPPY_MAX_PC_RETRIES times.
*/
#define IDEFLOPPY_MAX_PC_RETRIES 3
/*
- * With each packet command, we allocate a buffer of
- * IDEFLOPPY_PC_BUFFER_SIZE bytes.
+ * With each packet command, we allocate a buffer of IDEFLOPPY_PC_BUFFER_SIZE
+ * bytes.
*/
#define IDEFLOPPY_PC_BUFFER_SIZE 256
/*
- * In various places in the driver, we need to allocate storage
- * for packet commands and requests, which will remain valid while
- * we leave the driver to wait for an interrupt or a timeout event.
+ * In various places in the driver, we need to allocate storage for packet
+ * commands and requests, which will remain valid while we leave the driver to
+ * wait for an interrupt or a timeout event.
*/
#define IDEFLOPPY_PC_STACK (10 + IDEFLOPPY_MAX_PC_RETRIES)
-/*
- * Our view of a packet command.
- */
typedef struct idefloppy_packet_command_s {
u8 c[12]; /* Actual packet bytes */
- int retries; /* On each retry, we increment retries */
+ int retries; /* On each retry, we increment
+ retries */
int error; /* Error code */
int request_transfer; /* Bytes to transfer */
int actually_transferred; /* Bytes actually transferred */
int buffer_size; /* Size of our data buffer */
- int b_count; /* Missing/Available data on the current buffer */
+ int b_count; /* Missing/Available data on
+ the current buffer */
struct request *rq; /* The corresponding request */
u8 *buffer; /* Data buffer */
- u8 *current_position; /* Pointer into the above buffer */
- void (*callback) (ide_drive_t *); /* Called when this packet command is completed */
+ u8 *current_position; /* Pointer into above buffer */
+ void (*callback) (ide_drive_t *); /* Called when this packet
+ command is completed */
u8 pc_buffer[IDEFLOPPY_PC_BUFFER_SIZE]; /* Temporary buffer */
- unsigned long flags; /* Status/Action bit flags: long for set_bit */
+ unsigned long flags; /* Status/Action bit flags: long
+ for set_bit */
} idefloppy_pc_t;
-/*
- * Packet command flag bits.
- */
-#define PC_ABORT 0 /* Set when an error is considered normal - We won't retry */
-#define PC_DMA_RECOMMENDED 2 /* 1 when we prefer to use DMA if possible */
-#define PC_DMA_IN_PROGRESS 3 /* 1 while DMA in progress */
-#define PC_DMA_ERROR 4 /* 1 when encountered problem during DMA */
-#define PC_WRITING 5 /* Data direction */
-
-#define PC_SUPPRESS_ERROR 6 /* Suppress error reporting */
-
-/*
- * Removable Block Access Capabilities Page
- */
-typedef struct {
-#if defined(__LITTLE_ENDIAN_BITFIELD)
- unsigned page_code :6; /* Page code - Should be 0x1b */
- unsigned reserved1_6 :1; /* Reserved */
- unsigned ps :1; /* Should be 0 */
-#elif defined(__BIG_ENDIAN_BITFIELD)
- unsigned ps :1; /* Should be 0 */
- unsigned reserved1_6 :1; /* Reserved */
- unsigned page_code :6; /* Page code - Should be 0x1b */
-#else
-#error "Bitfield endianness not defined! Check your byteorder.h"
-#endif
- u8 page_length; /* Page Length - Should be 0xa */
-#if defined(__LITTLE_ENDIAN_BITFIELD)
- unsigned reserved2 :6;
- unsigned srfp :1; /* Supports reporting progress of format */
- unsigned sflp :1; /* System floppy type device */
- unsigned tlun :3; /* Total logical units supported by the device */
- unsigned reserved3 :3;
- unsigned sml :1; /* Single / Multiple lun supported */
- unsigned ncd :1; /* Non cd optical device */
-#elif defined(__BIG_ENDIAN_BITFIELD)
- unsigned sflp :1; /* System floppy type device */
- unsigned srfp :1; /* Supports reporting progress of format */
- unsigned reserved2 :6;
- unsigned ncd :1; /* Non cd optical device */
- unsigned sml :1; /* Single / Multiple lun supported */
- unsigned reserved3 :3;
- unsigned tlun :3; /* Total logical units supported by the device */
-#else
-#error "Bitfield endianness not defined! Check your byteorder.h"
-#endif
- u8 reserved[8];
-} idefloppy_capabilities_page_t;
-
-/*
- * Flexible disk page.
- */
-typedef struct {
-#if defined(__LITTLE_ENDIAN_BITFIELD)
- unsigned page_code :6; /* Page code - Should be 0x5 */
- unsigned reserved1_6 :1; /* Reserved */
- unsigned ps :1; /* The device is capable of saving the page */
-#elif defined(__BIG_ENDIAN_BITFIELD)
- unsigned ps :1; /* The device is capable of saving the page */
- unsigned reserved1_6 :1; /* Reserved */
- unsigned page_code :6; /* Page code - Should be 0x5 */
-#else
-#error "Bitfield endianness not defined! Check your byteorder.h"
-#endif
- u8 page_length; /* Page Length - Should be 0x1e */
- u16 transfer_rate; /* In kilobits per second */
- u8 heads, sectors; /* Number of heads, Number of sectors per track */
- u16 sector_size; /* Byes per sector */
- u16 cyls; /* Number of cylinders */
- u8 reserved10[10];
- u8 motor_delay; /* Motor off delay */
- u8 reserved21[7];
- u16 rpm; /* Rotations per minute */
- u8 reserved30[2];
-} idefloppy_flexible_disk_page_t;
-
-/*
- * Format capacity
- */
-typedef struct {
- u8 reserved[3];
- u8 length; /* Length of the following descriptors in bytes */
-} idefloppy_capacity_header_t;
-
-typedef struct {
- u32 blocks; /* Number of blocks */
-#if defined(__LITTLE_ENDIAN_BITFIELD)
- unsigned dc :2; /* Descriptor Code */
- unsigned reserved :6;
-#elif defined(__BIG_ENDIAN_BITFIELD)
- unsigned reserved :6;
- unsigned dc :2; /* Descriptor Code */
-#else
-#error "Bitfield endianness not defined! Check your byteorder.h"
-#endif
- u8 length_msb; /* Block Length (MSB)*/
- u16 length; /* Block Length */
-} idefloppy_capacity_descriptor_t;
+/* Packet command flag bits. */
+enum {
+ /* 1 when we prefer to use DMA if possible */
+ PC_FLAG_DMA_RECOMMENDED = (1 << 0),
+ /* 1 while DMA in progress */
+ PC_FLAG_DMA_IN_PROGRESS = (1 << 1),
+ /* 1 when encountered problem during DMA */
+ PC_FLAG_DMA_ERROR = (1 << 2),
+ /* Data direction */
+ PC_FLAG_WRITING = (1 << 3),
+ /* Suppress error reporting */
+ PC_FLAG_SUPPRESS_ERROR = (1 << 4),
+};
+/* format capacities descriptor codes */
#define CAPACITY_INVALID 0x00
#define CAPACITY_UNFORMATTED 0x01
#define CAPACITY_CURRENT 0x02
#define CAPACITY_NO_CARTRIDGE 0x03
/*
- * 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
- * of type idefloppy_floppy_t, defined below.
+ * 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 of type
+ * idefloppy_floppy_t, defined below.
*/
typedef struct ide_floppy_obj {
ide_drive_t *drive;
@@ -235,23 +142,19 @@ typedef struct ide_floppy_obj {
/* We implement a circular array */
int rq_stack_index;
- /*
- * Last error information
- */
+ /* Last error information */
u8 sense_key, asc, ascq;
/* delay this long before sending packet command */
u8 ticks;
int progress_indication;
- /*
- * Device information
- */
+ /* Device information */
/* Current format */
int blocks, block_size, bs_factor;
- /* Last format capacity */
- idefloppy_capacity_descriptor_t capacity;
+ /* Last format capacity descriptor */
+ u8 cap_desc[8];
/* Copy of the flexible disk page */
- idefloppy_flexible_disk_page_t flexible_disk_page;
+ u8 flexible_disk_page[32];
/* Write protect */
int wp;
/* Supports format progress report */
@@ -262,64 +165,40 @@ typedef struct ide_floppy_obj {
#define IDEFLOPPY_TICKS_DELAY HZ/20 /* default delay for ZIP 100 (50ms) */
-/*
- * Floppy flag bits values.
- */
-#define IDEFLOPPY_DRQ_INTERRUPT 0 /* DRQ interrupt device */
-#define IDEFLOPPY_MEDIA_CHANGED 1 /* Media may have changed */
-#define IDEFLOPPY_USE_READ12 2 /* Use READ12/WRITE12 or READ10/WRITE10 */
-#define IDEFLOPPY_FORMAT_IN_PROGRESS 3 /* Format in progress */
-#define IDEFLOPPY_CLIK_DRIVE 4 /* Avoid commands not supported in Clik drive */
-#define IDEFLOPPY_ZIP_DRIVE 5 /* Requires BH algorithm for packets */
-
-/*
- * ATAPI floppy drive packet commands
- */
-#define IDEFLOPPY_FORMAT_UNIT_CMD 0x04
-#define IDEFLOPPY_INQUIRY_CMD 0x12
-#define IDEFLOPPY_MODE_SELECT_CMD 0x55
-#define IDEFLOPPY_MODE_SENSE_CMD 0x5a
-#define IDEFLOPPY_READ10_CMD 0x28
-#define IDEFLOPPY_READ12_CMD 0xa8
-#define IDEFLOPPY_READ_CAPACITY_CMD 0x23
-#define IDEFLOPPY_REQUEST_SENSE_CMD 0x03
-#define IDEFLOPPY_PREVENT_REMOVAL_CMD 0x1e
-#define IDEFLOPPY_SEEK_CMD 0x2b
-#define IDEFLOPPY_START_STOP_CMD 0x1b
-#define IDEFLOPPY_TEST_UNIT_READY_CMD 0x00
-#define IDEFLOPPY_VERIFY_CMD 0x2f
-#define IDEFLOPPY_WRITE10_CMD 0x2a
-#define IDEFLOPPY_WRITE12_CMD 0xaa
-#define IDEFLOPPY_WRITE_VERIFY_CMD 0x2e
+/* Floppy flag bits values. */
+enum {
+ /* DRQ interrupt device */
+ IDEFLOPPY_FLAG_DRQ_INTERRUPT = (1 << 0),
+ /* Media may have changed */
+ IDEFLOPPY_FLAG_MEDIA_CHANGED = (1 << 1),
+ /* Format in progress */
+ IDEFLOPPY_FLAG_FORMAT_IN_PROGRESS = (1 << 2),
+ /* Avoid commands not supported in Clik drive */
+ IDEFLOPPY_FLAG_CLIK_DRIVE = (1 << 3),
+ /* Requires BH algorithm for packets */
+ IDEFLOPPY_FLAG_ZIP_DRIVE = (1 << 4),
+};
-/*
- * Defines for the mode sense command
- */
+/* Defines for the MODE SENSE command */
#define MODE_SENSE_CURRENT 0x00
#define MODE_SENSE_CHANGEABLE 0x01
-#define MODE_SENSE_DEFAULT 0x02
+#define MODE_SENSE_DEFAULT 0x02
#define MODE_SENSE_SAVED 0x03
-/*
- * IOCTLs used in low-level formatting.
- */
-
+/* IOCTLs used in low-level formatting. */
#define IDEFLOPPY_IOCTL_FORMAT_SUPPORTED 0x4600
#define IDEFLOPPY_IOCTL_FORMAT_GET_CAPACITY 0x4601
#define IDEFLOPPY_IOCTL_FORMAT_START 0x4602
#define IDEFLOPPY_IOCTL_FORMAT_GET_PROGRESS 0x4603
-/*
- * Error codes which are returned in rq->errors to the higher part
- * of the driver.
- */
+/* Error code returned in rq->errors to the higher part of the driver. */
#define IDEFLOPPY_ERROR_GENERAL 101
/*
- * The following is used to format the general configuration word of
- * the ATAPI IDENTIFY DEVICE command.
+ * The following is used to format the general configuration word of the
+ * ATAPI IDENTIFY DEVICE command.
*/
-struct idefloppy_id_gcw {
+struct idefloppy_id_gcw {
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned packet_size :2; /* Packet Size */
unsigned reserved234 :3; /* Reserved */
@@ -342,103 +221,12 @@ struct idefloppy_id_gcw {
};
/*
- * INQUIRY packet command - Data Format
- */
-typedef struct {
-#if defined(__LITTLE_ENDIAN_BITFIELD)
- 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 */
-#elif defined(__BIG_ENDIAN_BITFIELD)
- unsigned reserved0_765 :3; /* Peripheral Qualifier - Reserved */
- unsigned device_type :5; /* Peripheral Device Type */
- unsigned rmb :1; /* Removable Medium Bit */
- unsigned reserved1_6t0 :7; /* Reserved */
- unsigned iso_version :2; /* ISO Version */
- unsigned ecma_version :3; /* ECMA Version */
- unsigned ansi_version :3; /* ANSI Version */
- unsigned reserved3_7 :1; /* AENC - Reserved */
- unsigned reserved3_6 :1; /* TrmIOP - Reserved */
- unsigned reserved3_45 :2; /* Reserved */
- unsigned response_format :4; /* Response Data Format */
-#else
-#error "Bitfield endianness not defined! Check your byteorder.h"
-#endif
- 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 */
-} idefloppy_inquiry_result_t;
-
-/*
- * REQUEST SENSE packet command result - Data Format.
- */
-typedef struct {
-#if defined(__LITTLE_ENDIAN_BITFIELD)
- unsigned error_code :7; /* Current error (0x70) */
- unsigned valid :1; /* The information field conforms to SFF-8070i */
- u8 reserved1 :8; /* Reserved */
- unsigned sense_key :4; /* Sense Key */
- unsigned reserved2_4 :1; /* Reserved */
- unsigned ili :1; /* Incorrect Length Indicator */
- unsigned reserved2_67 :2;
-#elif defined(__BIG_ENDIAN_BITFIELD)
- unsigned valid :1; /* The information field conforms to SFF-8070i */
- unsigned error_code :7; /* Current error (0x70) */
- u8 reserved1 :8; /* Reserved */
- unsigned reserved2_67 :2;
- unsigned ili :1; /* Incorrect Length Indicator */
- unsigned reserved2_4 :1; /* Reserved */
- unsigned sense_key :4; /* Sense Key */
-#else
-#error "Bitfield endianness not defined! Check your byteorder.h"
-#endif
- 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 */
- u8 sksv[3];
- u8 pad[2]; /* Padding to 20 bytes */
-} idefloppy_request_sense_result_t;
-
-/*
- * Pages of the SELECT SENSE / MODE SENSE packet commands.
+ * Pages of the SELECT SENSE / MODE SENSE packet commands.
+ * See SFF-8070i spec.
*/
#define IDEFLOPPY_CAPABILITIES_PAGE 0x1b
#define IDEFLOPPY_FLEXIBLE_DISK_PAGE 0x05
-/*
- * Mode Parameter Header for the MODE SENSE packet command
- */
-typedef struct {
- u16 mode_data_length; /* Length of the following data transfer */
- u8 medium_type; /* Medium Type */
-#if defined(__LITTLE_ENDIAN_BITFIELD)
- unsigned reserved3 :7;
- unsigned wp :1; /* Write protect */
-#elif defined(__BIG_ENDIAN_BITFIELD)
- unsigned wp :1; /* Write protect */
- unsigned reserved3 :7;
-#else
-#error "Bitfield endianness not defined! Check your byteorder.h"
-#endif
- u8 reserved[4];
-} idefloppy_mode_parameter_header_t;
-
static DEFINE_MUTEX(idefloppy_ref_mutex);
#define to_ide_floppy(obj) container_of(obj, struct ide_floppy_obj, kref)
@@ -458,39 +246,35 @@ static struct ide_floppy_obj *ide_floppy_get(struct gendisk *disk)
return floppy;
}
-static void ide_floppy_release(struct kref *);
+static void idefloppy_cleanup_obj(struct kref *);
static void ide_floppy_put(struct ide_floppy_obj *floppy)
{
mutex_lock(&idefloppy_ref_mutex);
- kref_put(&floppy->kref, ide_floppy_release);
+ kref_put(&floppy->kref, idefloppy_cleanup_obj);
mutex_unlock(&idefloppy_ref_mutex);
}
/*
- * Too bad. The drive wants to send us data which we are not ready to accept.
- * Just throw it away.
+ * Too bad. The drive wants to send us data which we are not ready to accept.
+ * Just throw it away.
*/
-static void idefloppy_discard_data (ide_drive_t *drive, unsigned int bcount)
+static void idefloppy_discard_data(ide_drive_t *drive, unsigned int bcount)
{
while (bcount--)
(void) HWIF(drive)->INB(IDE_DATA_REG);
}
-#if IDEFLOPPY_DEBUG_BUGS
-static void idefloppy_write_zeros (ide_drive_t *drive, unsigned int bcount)
+static void idefloppy_write_zeros(ide_drive_t *drive, unsigned int bcount)
{
while (bcount--)
HWIF(drive)->OUTB(0, IDE_DATA_REG);
}
-#endif /* IDEFLOPPY_DEBUG_BUGS */
/*
- * idefloppy_do_end_request is used to finish servicing a request.
- *
- * For read/write requests, we will call ide_end_request to pass to the
- * next buffer.
+ * Used to finish servicing a request. For read/write requests, we will call
+ * ide_end_request to pass to the next buffer.
*/
static int idefloppy_do_end_request(ide_drive_t *drive, int uptodate, int nsecs)
{
@@ -498,12 +282,12 @@ static int idefloppy_do_end_request(ide_drive_t *drive, int uptodate, int nsecs)
struct request *rq = HWGROUP(drive)->rq;
int error;
- debug_log(KERN_INFO "Reached idefloppy_end_request\n");| Davide Libenzi | [patch 7/8] fdmap v2 - implement sys_socket2 |
| Greg Kroah-Hartman | [PATCH 018/196] coda: convert struct class_device to struct device |
| Bart Van Assche | Integration of SCST in the mainstream Linux kernel |
| David Newall | Re: Slow DOWN, please!!! |
git: | |
| Christoph Lameter | Network latency regressions from 2.6.22 to 2.6.29 |
| David Miller | Re: [PATCH] pkt_sched: Destroy gen estimators under rtnl_lock(). |
| Arjan van de Ven | Re: [GIT]: Networking |
| Gerrit Renker | [PATCH 27/37] dccp: Integration of dynamic feature activation - part 2 (server side) |
