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* CRIS v32: Update and simplify kernel/irq.c.Jesper Nilsson2008-02-081-81/+193
| | | | | | | | - First timer register has changed name to timer0. - Build IRQs with only IRQ number, mask bit will be calculated instead. - Add more IRQs, up to 64 supported. - Use arrays to hold which IRQs triggered instead of trying to do magic with two 32 bit values now that more than 32 IRQs are supported.
* CRIS v32: Update kernel/head.SJesper Nilsson2008-02-081-88/+114
| | | | | | | | | | - Shorten include paths for machine specific header files. - Add magic for booting NAND flash. - Change CONFIG_ETRAXFS_SIM to CONFIG_ETRAX_VCS_SIM. - Use assembler macros for initializing hardware (clocks) - Add stubs for SMP slave CPUs. - Search for cramfs or jffs2 if no romfs found. - Initialize l2cache.
* CRIS v32: Update and improve fasttimer.cJesper Nilsson2008-02-081-324/+195
| | | | | | | | | | | | | | | - Change include path to machine dependent header files. - Remove __INLINE__, it expands to inline anyway. - Don't initialize static variables. - Change timers to use fasttimer_t instead of timevals. - Change name of timeval_cmp to fasttime_cmp to highlight this. - Register name for first timer is regi_timer0, not regi_timer. - Whitespace and formatting changes. - Don't return if we're blocking interrupts, goto done and restore interrupts. - Disable interrupts while walking the fasttimer list, only restore while doing the callback. - Remove #ifdef DECLARE_WAITQUEUE, this code won't be used in another OS. - Remove CVS log.
* CRIS v32: Include path fix for timex.hJesper Nilsson2008-02-081-4/+4
| | | | | - Shorten include path for machine dependent header files. - Correct some formatting issues.
* CRIS v32: Update debugport.Jesper Nilsson2008-02-081-299/+43
| | | | | | | | | | - Shorten include paths to machine dependent headers. - Add support for fifth serial port. - Remove CONFIG_ETRAXFS_SIM and CONFIG_ETRAX_DEBUG_PORT_NULL, no longer used. - Remove raw_printk and stupid_debug hack, no longer needed. - Remove dummy console stuff, no longer needed. - Correct some register type names. - Correct some whitespace errors and formatting.
* CRIS v32: Update boot/rescue/head.S code.Jesper Nilsson2008-02-081-27/+15
| | | | | | - Add ifdef for ETRAX_AXISFLASHMAP to avoid compiling file unless it is set. - Use assembler macros for setting up clocks. - Don't copy image, just jump to it (only works for NOR flash)
* CRIS v32: Update boot/compressed/misc.cJesper Nilsson2008-02-081-19/+53
| | | | | | | | | | - Shorten include paths to machine specific headers. - Remove fill_inbuf, not defined here. - Return __dest as value from memcpy. - Enable serial port hardware transmitter and receiver in serial_setup. - Correct baudrate divisor calculation, changed from 4800 to 115200. - Add support for Artpec-3 specific serial port setup. - Initialize pinmux for the correct serial port.
* CRIS v32: Update compressed head.SJesper Nilsson2008-02-081-98/+39
| | | | | | - Fixes for NAND and NOR flash booting. - Use assembler macros for common tasks (clocks, general io etc) - Use (EtraxFS or Artpec-3) machine specific include for dram and hardware init.
* CRIS v32: Remove common gpio and nandflash, add mach-fs and mach-a3 as subdirs.Jesper Nilsson2008-02-081-2/+3
| | | | | Also add board_mmcspi to build if ETRAX_SPI_MMC_BOARD is set. (Generic MMC SPI implementation)
* CRIS v32: Update boot rescue Kbuild makefile.Jesper Nilsson2008-02-081-25/+16
| | | | | | - Remove old specific targets, use more generic ones instead. - Use if_changed to avoid creating new images when no change. - Use EXTRA_CFLAGS instead of CFLAGS.
* CRIS v32: Update boot compressed Kbuild makefile.Jesper Nilsson2008-02-081-28/+17
| | | | | | - Remove old specific targets, use more generic ones instead. - Use if_changed to avoid creating new images when no change. - Use KBUILD_CFLAGS instead of CFLAGS.
* CRIS v32: Update boot Kbuild makefile.Jesper Nilsson2008-02-081-8/+15
| | | | | - Remove old specific targets, use more generic ones instead. - Use if_changed to avoid creating new images when no change.
* CRIS v32: Update traps.cJesper Nilsson2008-02-081-103/+95
| | | | | | | | | - Remove raw_prink hack, use oops_in_progress instead. - When ETRAX_WATCHDOG_NICE_DOGGY is set, loop in trap after oops dump instead of rebooting. - Break long lines to less than 80 chars. - Fix whitespace errors. - Remove unnecessary comments.
* CRIS v10: Update and improve axisflashmap.cJesper Nilsson2008-02-081-144/+37
| | | | | | | | - Add config to use mtd0 as whole flash device. - Fix whitespace errors. - Remove braces around single statement ifs. - Break long lines. - Remove unnecessary CVS log.
* CRIS v10: Update rescue head.sJesper Nilsson2008-02-081-56/+61
| | | | | - Correct whitespace problems. - Add ifdef for ETRAX_AXISFLASHMAP to avoid compile error when not set.
* CRIS v10: Update rescue Kbuild makefile.Jesper Nilsson2008-02-081-37/+19
| | | | | | | - Remove old specific targets, use more generic ones instead. - Use if_changed to avoid creating new images when no change. Removes a lot of cruft. - Use EXTRA_CFLAGS instead of CFLAGS.
* CRIS v10: Update boot/compressed Kbuild makefile.Jesper Nilsson2008-02-081-29/+19
| | | | | | - Remove old specific targets, use more generic ones instead. - Use if_changed to avoid creating new images when no change. - Use EXTRA_CFLAGS instead of CFLAGS.
* CRIS v10: Update boot Kbuild makefile.Jesper Nilsson2008-02-081-8/+16
| | | | - Remove old specific targets, use more generic ones instead.
* CRIS: Update main Kbuild makefile.Jesper Nilsson2008-02-081-69/+70
| | | | | | | | - Remove old and non-generic targets, use generic ones instead. - Add sub-arch as mach-fs or mach-a3 for EtraxFS and Artpec-3 respectively. - Add links to sub-arch directories, and erase before trying to create them. - Include from sub-arch specific include directory "mach". - Add files to be cleaned in CLEAN_FILES instead of as archclean target.
* CRIS v32: Update and improve axisflashmapJesper Nilsson2008-02-081-143/+345
| | | | | | - Use default partition table when no partition is found (for initial tests) - Add config ETRAX_AXISFLASHMAP_MTD0WHOLE to allow whole flash as mtd0. - Add config for VCS simulator connection.
* CRIS v32: New version of I2C driver.Jesper Nilsson2008-02-082-14/+187
| | | | | | | | - Add i2c_write and i2c_read as functions. - Use spinlocks for critical regions. - Add config item to set I2C data and clock port. - Put unneeded testcode inside #if 0. - Remove CVS id tag.
* CRIS v32: Fixup kernel Makefile.Jesper Nilsson2008-02-081-3/+2
| | | | | | | - Remove CRISv32 common arbiter, dma, io and pinmux files, they are now defined in machine dependent directories. - Add cache and cacheflush files for working around cache problems in CRISv32 chips.
* CRIS v32: Update entry.S to working order.Jesper Nilsson2008-02-081-18/+63
| | | | | | | - Remove oldset parameter. - Utilise delay-slot for parameter moving. - Add kernel_execve as break 13. - Add new kernel syscalls.
* CRIS: Remove define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORYJesper Nilsson2008-02-081-11/+0
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* CRIS v32: Whitespace and formatting changes for kernel/ptrace.cJesper Nilsson2008-02-082-5/+8
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* CRIS: Minor generic kernel/traps.c changes.Jesper Nilsson2008-02-081-87/+139
| | | | | | | - Collect extern declarations at top of file. - Change raw_printk to printk, use oops_in_progress instead. - Fix formatting and whitespace. - Allow the watchdog to be disabled during oops.
* CRIS: Minor fixes to mm/fault.cJesper Nilsson2008-02-081-141/+28
| | | | | | | - Only disallow oops if we're in_interrupt context (was in_atomic before) - Use the generic oops_in_progress instead of the raw_printk hack. - Fix whitespace/formatting. - Remove CVS log entries.
* CRIS v32: Add headers for EtraxFS and Artpec-3 chips.Jesper Nilsson2008-02-081-0/+3
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* CRIS v32: Add prototypes for cache flushingJesper Nilsson2008-02-081-0/+11
| | | | We need these to work around some cache bugs in CRISv32 chips.
* CRIS: Remove unnecessary CVS log from cris/mm/init.cJesper Nilsson2008-02-081-111/+0
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* CRIS v32: Update asm-cris/arch-v32/irq.h for ETRAX FS and ARTPEC-3Jesper Nilsson2008-02-081-5/+10
| | | | | | - Correct include to use <> - Rework calculation of number of IRQs and exceptions we have. - Remove useless "mask" argument to BUILD_IRQ macro
* CRIS: Merge axisflashmap.h with Axis internal changes.Jesper Nilsson2008-02-081-12/+27
| | | | | | | - Add partition table struct to be used to parse partition table in flash. - Add JFFS2 as a type, and add readoly flag. - Improve some comments. - Lindent has been run, fixing whitespace and formatting issues.
* CRIS v32: Update synchronous serial driver.Jesper Nilsson2008-02-081-341/+599
| | | | | Now uses a DMA descriptor ring, which should avoid any unnecessary pauses in the streams.
* CRIS v32: Add SECOND_WORD_SYNC, used in sync_serial.Jesper Nilsson2008-02-081-0/+1
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* CRIS v32: Add L2 cache initialization code.Jesper Nilsson2008-02-081-0/+29
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* CRIS v32: Add hardware dependent include files and defconfigs for ETRAX FS ↵Jesper Nilsson2008-02-0865-0/+19631
| | | | | | | | and ARTPEC-3 chips. The header files describe the hardware registers available in both these chips, note that most of this documentation is automatically generated from the hardware implementation.
* CRIS v32: Add new machine dependent files for Etrax-FS and Artpec-3.Jesper Nilsson2008-02-0823-186/+3470
| | | | | | | | The two chips are somewhat different, and needs different handling. Adds handing of the dma, dram initialization, hardware settings, io, memory arbiter and pinmux Also moves the dma, dram initialization and io from CRIS v32 common files.
* CRIS v32: Add new driver files for Etrax-FSJesper Nilsson2008-02-083-0/+1149
| | | | Adds gpio and nandflash handling for Etrax-FS
* CRIS v32: Add new driver files for Artpec-3.Jesper Nilsson2008-02-083-0/+1168
| | | | Adds gpio and nandflash handling for Artpec-3.
* CRIS: Rearrange Kconfigs for v10 and v32 to allow compilation without warnings.Jesper Nilsson2008-02-085-536/+988
| | | | | | | | | | | - Remove some unneeded configs and add some new ones. - Merge common config items to common file instead of duplicating them. - Pull in standard Kconfig.preempt. - Remove some unneeded Kconfigs for subsystems not (yet) available on CRIS (md, scsi, ieee1394, i2o, isdn, telephony, media, pcmcia, pci) - Rename CRISv32 config items which had different types from CRISv10. (ETRAX_LED2G, ETRAX_LED2R, ETRAX_LED3G, ETRAX_LED3R, ETRAX_I2C_DATA_PORT, ETRAX_I2C_CLK_PORT)
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dmLinus Torvalds2008-02-0715-483/+1372
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm: (44 commits) dm raid1: report fault status dm raid1: handle read failures dm raid1: fix EIO after log failure dm raid1: handle recovery failures dm raid1: handle write failures dm snapshot: combine consecutive exceptions in memory dm: stripe enhanced status return dm: stripe trigger event on failure dm log: auto load modules dm: move deferred bio flushing to workqueue dm crypt: use async crypto dm crypt: prepare async callback fn dm crypt: add completion for async dm crypt: add async request mempool dm crypt: extract scatterlist processing dm crypt: tidy io ref counting dm crypt: introduce crypt_write_io_loop dm crypt: abstract crypt_write_done dm crypt: store sector mapping in dm_crypt_io dm crypt: move queue functions ...
| * dm raid1: report fault statusJonathan Brassow2008-02-081-8/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds extra information to the mirror status output, so that it can be determined which device(s) have failed. For each mirror device, a character is printed indicating the most severe error encountered. The characters are: * A => Alive - No failures * D => Dead - A write failure occurred leaving mirror out-of-sync * S => Sync - A sychronization failure occurred, mirror out-of-sync * R => Read - A read failure occurred, mirror data unaffected This allows userspace to properly reconfigure the mirror set. Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * dm raid1: handle read failuresJonathan Brassow2008-02-081-45/+211
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch gives the ability to respond-to/record device failures that happen during read operations. It also adds the ability to read from mirror devices that are not the primary if they are in-sync. There are essentially two read paths in mirroring; the direct path and the queued path. When a read request is mapped, if the region is 'in-sync' the direct path is taken; otherwise the queued path is taken. If the direct path is taken, we must record bio information so that if the read fails we can retry it. We then discover the status of a direct read through mirror_end_io. If the read has failed, we will mark the device from which the read was attempted as failed (so we don't try to read from it again), restore the bio and try again. If the queued path is taken, we discover the results of the read from 'read_callback'. If the device failed, we will mark the device as failed and attempt the read again if there is another device where this region is known to be 'in-sync'. Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * dm raid1: fix EIO after log failureJonathan Brassow2008-02-081-11/+90
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the ability to requeue write I/O to core device-mapper when there is a log device failure. If a write to the log produces and error, the pending writes are put on the "failures" list. Since the log is marked as failed, they will stay on the failures list until a suspend happens. Suspends come in two phases, presuspend and postsuspend. We must make sure that all the writes on the failures list are requeued in the presuspend phase (a requirement of dm core). This means that recovery must be complete (because writes may be delayed behind it) and the failures list must be requeued before we return from presuspend. The mechanisms to ensure recovery is complete (or stopped) was already in place, but needed to be moved from postsuspend to presuspend. We rely on 'flush_workqueue' to ensure that the mirror thread is complete and therefore, has requeued all writes in the failures list. Because we are using flush_workqueue, we must ensure that no additional 'queue_work' calls will produce additional I/O that we need to requeue (because once we return from presuspend, we are unable to do anything about it). 'queue_work' is called in response to the following functions: - complete_resync_work = NA, recovery is stopped - rh_dec (mirror_end_io) = NA, only calls 'queue_work' if it is ready to recover the region (recovery is stopped) or it needs to clear the region in the log* **this doesn't get called while suspending** - rh_recovery_end = NA, recovery is stopped - rh_recovery_start = NA, recovery is stopped - write_callback = 1) Writes w/o failures simply call bio_endio -> mirror_end_io -> rh_dec (see rh_dec above) 2) Writes with failures are put on the failures list and queue_work is called** ** write_callbacks don't happen during suspend ** - do_failures = NA, 'queue_work' not called if suspending - add_mirror (initialization) = NA, only done on mirror creation - queue_bio = NA, 1) delayed I/O scheduled before flush_workqueue is called. 2) No more I/Os are being issued. 3) Re-attempted READs can still be handled. (Write completions are handled through rh_dec/ write_callback - mention above - and do not use queue_bio.) Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * dm raid1: handle recovery failuresJonathan Brassow2008-02-081-3/+20
| | | | | | | | | | | | | | | | | | | | This patch adds the calls to 'fail_mirror' if an error occurs during mirror recovery (aka resynchronization). 'fail_mirror' is responsible for recording the type of error by mirror device and ensuring an event gets raised for the purpose of notifying userspace. Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * dm raid1: handle write failuresJonathan Brassow2008-02-081-26/+224
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch gives mirror the ability to handle device failures during normal write operations. The 'write_callback' function is called when a write completes. If all the writes failed or succeeded, we report failure or success respectively. If some of the writes failed, we call fail_mirror; which increments the error count for the device, notes the type of error encountered (DM_RAID1_WRITE_ERROR), and selects a new primary (if necessary). Note that the primary device can never change while the mirror is not in-sync (IOW, while recovery is happening.) This means that the scenario where a failed write changes the primary and gives recovery_complete a chance to misread the primary never happens. The fact that the primary can change has necessitated the change to the default_mirror field. We need to protect against reading garbage while the primary changes. We then add the bio to a new list in the mirror set, 'failures'. For every bio in the 'failures' list, we call a new function, '__bio_mark_nosync', where we mark the region 'not-in-sync' in the log and properly set the region state as, RH_NOSYNC. Userspace must also be notified of the failure. This is done by 'raising an event' (dm_table_event()). If fail_mirror is called in process context the event can be raised right away. If in interrupt context, the event is deferred to the kmirrord thread - which raises the event if 'event_waiting' is set. Backwards compatibility is maintained by ignoring errors if the DM_FEATURES_HANDLE_ERRORS flag is not present. Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * dm snapshot: combine consecutive exceptions in memoryMilan Broz2008-02-082-16/+116
| | | | | | | | | | | | | | | | | | Provided sector_t is 64 bits, reduce the in-memory footprint of the snapshot exception table by the simple method of using unused bits of the chunk number to combine consecutive entries. Signed-off-by: Milan Broz <mbroz@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * dm: stripe enhanced status returnBrian Wood2008-02-081-1/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds additional information to the status line. It is added at the end of the returned text so it will not interfere with existing implementations using this data. The addition of this information will allow for a common return interface to match that returned with the dm-raid1.c status line (with Jonathan Brassow's patches). Here is a sample of what is returned with a mirror "status" call: isw_eeaaabgfg_mirror: 0 488390920 mirror 2 8:16 8:32 3727/3727 1 AA 1 core Here's what's returned with this patch for a stripe "status" call: isw_dheeijjdej_stripe: 0 976783872 striped 2 8:16 8:32 1 AA Signed-off-by: Brian Wood <brian.j.wood@intel.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * dm: stripe trigger event on failureBrian Wood2008-02-081-1/+81
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the stripe_end_io function to process errors that might occur after an IO operation. As part of this there are a number of enhancements made to record and trigger events: - New atomic variable in struct stripe to record the number of errors each stripe volume device has experienced (could be used later with uevents to report back directly to userspace) - New workqueue/work struct setup to process the trigger_event function - New end_io function. It is here that testing for BIO error conditions take place. It determines the exact stripe that cause the error, records this in the new atomic variable, and calls the queue_work() function - New trigger_event function to process failure events. This calls dm_table_event() Signed-off-by: Brian Wood <brian.j.wood@intel.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
| * dm log: auto load modulesJonathan Brassow2008-02-081-1/+50
| | | | | | | | | | | | | | | | If the log type is not recognised, attempt to load the module 'dm-log-<type>.ko'. Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
generated by cgit v1.1 at 2024-09-20 19:13:01 +0000