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* [IA64] iosapic cleanupSimon Horman2007-12-07
| | | | | | | Make some IOSAPIC functions static and remove one that is unused. Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] signal : fix missing error checkingsShi Weihua2007-12-07
| | | | | | | | Not all the return value of __copy_from_user and __put_user is checked.This patch fixed it. Signed-off-by: Shi Weihua <shiwh@cn.fujitsu.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] export copy_page() to modulesAndrew Morton2007-12-07
| | | | | | | | | | | | | | | | | With the unionfs patch applied I get ERROR: "copy_page" [fs/unionfs/unionfs.ko] undefined! the other architectures (some, at least) export copy_page() so I guess ia64 should also do so. To do this we need to move the copy_page() functions out of lib.a and into built-in.o and add the EXPORT_SYMBOL(). Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] don't assume that unwcheck.py is executableAndrew Morton2007-12-07
| | | | | | | | Don't assume that this file has execute permissions. For example, patch(1) loses that information. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* [IA64] increase .data.patch offsetAndrew Morton2007-12-07
| | | | | | | | | | | | /opt/crosstool/gcc-3.4.5-glibc-2.3.6/ia64-unknown-linux-gnu/lib/gcc/ia64-unknown-linux-gnu/3.4.5/../../../../ia64-unknown-linux-gnu/bin/ld: section .data.patch [a000000000000500 -> a000000000000507] overlaps section .dynamic [a0000000000003c8 -> a000000000000507] This only appears to be a problem with strangely configured cross-compilation ... native compilers don't have this issue. But in the interests of helping others at least compile for ia64, this can go in. -Tony Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
* Merge branch 'upstream-linus' of ↵Linus Torvalds2007-12-07
|\ | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: libata: kill spurious NCQ completion detection ahci: don't attach if ICH6 is in combined mode ata_piix: add Toshiba Tecra M4 to broken suspend list ahci: fix engine reset failed message
| * libata: kill spurious NCQ completion detectionTejun Heo2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Spurious NCQ completion detection implemented in ahci was incorrect. On AHCI receving and processing FISes and raising interrupts are not interlocked and spurious interrupts are expected. For example, if an interrupt occurs while interrupt handler is running and the running interrupt handler handles the event the new IRQ indicated, after IRQ handler finishes, it will be executed again because IRQ pending bit is set by the new interrupt but there won't be anything to process. Please read the following message for more information. http://article.gmane.org/gmane.linux.ide/26012 This patch... * Removes all spurious IRQ whining from ahci. Spurious NCQ completion detection was completely wrong. Spurious D2H Register FIS taught us that some early drives send spurious D2H Register FIS with I bit set while NCQ commands are in progress but none of recent drives does that and even the ones which show such behavior can do NCQ fine. * Kills all NCQ blacklist entries which were added because of spurious NCQ completions. I tracked down each commit and verified all removed ones are actually added because of spurious completions. WD740ADFD-00NLR1 wasn't deleted but moved upward because the drive not only had spurious NCQ completions but also is slow on sequential data transfers if NCQ is enabled. Maxtor 7V300F0 was added by 0e3dbc01d53940fe10e5a5cfec15ede3e929c918 from Alan Cox. I can only find evidences that the drive only had troubles with spuruious completions by searching the mailing list. This entry needs to be verified and removed if it doesn't have other NCQ related problems. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * ahci: don't attach if ICH6 is in combined modeTejun Heo2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | ICH6 R/Ms share PCI ID between piix and ahci modes and we've been allowing ahci to attach regardless of how BIOS configured it. However, enabling AHCI mode when the controller is in combined mode can result in unexpected behavior. Don't attach if the controller is in combined mode. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Bill Nottingham <notting@redhat.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * ata_piix: add Toshiba Tecra M4 to broken suspend listPeter Schwenke2007-12-07
| | | | | | | | | | | | | | | | | | Add Toshiba Tecra M4 to broken suspend list. This is from OSDL bugzilla bug 7780. Signed-off-by: Peter Schwenke <peter@bluetoad.com.au> Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * ahci: fix engine reset failed messageTejun Heo2007-12-07
| | | | | | | | | | | | | | | | There isn't much point in reporting -EOPNOTSUPP as failure. Also the message was missing newline. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | S2io: Check for register initialization completion before accesing device ↵Sreenivasa Honnur2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | registers - Making sure register initialisation is complete before proceeding further. The driver must wait until initialization is complete before attempting to access any other device registers. Signed-off-by: Surjit Reang <surjit.reang@neterion.com> Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | ibm_newemac: Update file headers copyright noticesBenjamin Herrenschmidt2007-12-07
| | | | | | | | | | | | | | | | This updates the copyright notices of the new EMAC driver to avoid confusion as who is to be blamed for new bugs. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | ibm_newemac: Call dev_set_drvdata() before tah_reset()Valentine Barshak2007-12-07
| | | | | | | | | | | | | | | | | | The patch moves dev_set_drvdata(&ofdev->dev, dev) up before tah_reset(ofdev) is called to avoid a NULL pointer dereference, since tah_reset uses drvdata. Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | ibm_newemac: Fix typo reading TAH channel infoValentine Barshak2007-12-07
| | | | | | | | | | | | | | | | | | This patch fixes a typo in ibm_newemac/core.c (tah_port should be used instead of tah_ph) Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | ibm_newemac: Correct opb_bus_freq valueValentine Barshak2007-12-07
| | | | | | | | | | | | | | | | | | The EMAC4_MR1_OBCI(freq) macro expects freg in MHz, while opb_bus_freq is kept in Hz. Correct this. Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | ibm_newemac: Skip EMACs that are marked unused by the firmwareHugh Blemings2007-12-07
| | | | | | | | | | | | | | | | | | | | | | Depending on how the 44x processors are wired, some EMAC cells might not be useable (and not connected to a PHY). However, some device-trees may choose to still expose them (since their registers are present in the MMIO space) but with an "unused" property in them. Signed-off-by: Hugh Blemings <hugh@blemings.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | ibm_newemac: Cleanup/fix support for STACR register variantsBenjamin Herrenschmidt2007-12-07
| | | | | | | | | | | | | | | | | | | | There are a few variants of the STACR register that affect more than just the "AXON" version of EMAC. Replace the current test of various chip models with tests for generic properties in the device-tree. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Stefan Roese <sr@denx.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | ibm_newemac: Cleanup/Fix RGMII MDIO support detectionBenjamin Herrenschmidt2007-12-07
| | | | | | | | | | | | | | | | | | | | More than just "AXON" version of EMAC RGMII supports MDIO, so replace the current test with a generic property in the device-tree that indicates such support. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Stefan Roese <sr@denx.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | ibm_newemac: Workaround reset timeout when no linkBenjamin Herrenschmidt2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With some PHYs, when the link goes away, the EMAC reset fails due to the loss of the RX clock I believe. The old EMAC driver worked around that using some internal chip-specific clock force bits that are different on various 44x implementations. This is an attempt at doing it differently, by avoiding the reset when there is no link, but forcing loopback mode instead. It seems to work on my Taishan 440GX based board so far. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Stefan Roese <sr@denx.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | ibm_newemac: Fix ZMII refcounting bugBenjamin Herrenschmidt2007-12-07
| | | | | | | | | | | | | | | | | | | | When using ZMII for MDIO only (such as 440GX with RGMII for data and ZMII for MDIO), the ZMII code would fail to properly refcount, thus triggering a BUG_ON(). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Stefan Roese <sr@denx.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | ibm_newemac: Add ET1011c PHY supportStefan Roese2007-12-07
| | | | | | | | | | | | | | | | | | This adds support for the Agere ET1011c PHY as found on the AMCC Taishan board. Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | ibm_newemac: Add BCM5248 and Marvell 88E1111 PHY supportStefan Roese2007-12-07
| | | | | | | | | | | | | | | | | | | | | | This patch adds BCM5248 and Marvell 88E1111 PHY support to NEW EMAC driver. These PHY chips are used on PowerPC 440EPx boards. The PHY code is based on the previous work by Stefan Roese <sr@denx.de> Signed-off-by: Stefan Roese <sr@denx.de> Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | e100: cleanup unneeded mathAuke Kok2007-12-07
| | | | | | | | | | | | | | | | | | No need to convert to bytes and back - cleanup unneeded code. Adapted from fix from 'Roel Kluin <12o3l@tiscali.nl>' Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | e1000: fix memcpy in e1000_get_stringsRoel Kluin2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/net/e1000/e1000_ethtool.c:113: #define E1000_TEST_LEN sizeof(e1000_gstrings_test) / ETH_GSTRING_LEN drivers/net/e1000e/ethtool.c:106: #define E1000_TEST_LEN sizeof(e1000_gstrings_test) / ETH_GSTRING_LEN E1000_TEST_LEN*ETH_GSTRING_LEN will expand to sizeof(e1000_gstrings_test) / (ETH_GSTRING_LEN * ETH_GSTRING_LEN) A lack of parentheses around defines causes unexpected results due to operator precedences. Signed-off-by: Roel Kluin <12o3l@tiscali.nl> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | make bnx2x select ZLIB_INFLATEEliezer Tamir2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | | The bnx2x module depends on the zlib_inflate functions. The build will fail if ZLIB_INFLATE has not been selected manually or by building another module that automatically selects it. Modify BNX2X config option to 'select ZLIB_INFLATE' like BNX2 and others. This seems to fix it. Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Acked-by: Eliezer Tamir <eliezert@broadcom.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | cxgb3 - T3C support updateDivy Le Ray2007-12-07
| | | | | | | | | | | | | | | | | | Update GPIO mapping for T3C. Update xgmac for T3C support. Fix typo in mtu table. Signed-off-by: Divy Le Ray <divy@chelsio.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | bonding: Fix race at module unloadJay Vosburgh2007-12-07
| | | | | | | | | | | | | | | | | | | | | | Fixes a race condition in module unload. Without this change, workqueue events may fire while bonding data structures are partially freed but before bond_close() is invoked by unregister_netdevice(). Update version to 3.2.3. Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | bonding: Add new layer2+3 hash for xor/802.3ad modesJay Vosburgh2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add new hash for balance-xor and 802.3ad modes. Originally submitted by "Glenn Griffin" <ggriffin.kernel@gmail.com>; modified by Jay Vosburgh to move setting of hash policy out of line, tweak the documentation update and add version update to 3.2.2. Glenn's original comment follows: Included is a patch for a new xmit_hash_policy for the bonding driver that selects slaves based on MAC and IP information. This is a middle ground between what currently exists in the layer2 only policy and the layer3+4 policy. This policy strives to be fully 802.3ad compliant by transmitting every packet of any particular flow over the same link. As documented the layer3+4 policy is not fully compliant for extreme cases such as ip fragmentation, so this policy is a nice compromise for environments that require full compliance but desire more than the layer2 only policy. Signed-off-by: "Glenn Griffin" <ggriffin.kernel@gmail.com> Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | bonding: Fix time comparisonDavid Sterba2007-12-07
| | | | | | | | | | | | | | | | | | | | | | From: David Sterba <dsterba@suse.cz> Use macros for comparing jiffies. Jiffies' wrap caused missed events and hangs. Module reinsert was needed to make bonding work again. Signed-off-by: David Sterba <dsterba@suse.cz> Acked-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | bonding: Allow setting and querying xmit policy regardless of modeWagner Ferenc2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | From: Wagner Ferenc <wferi@niif.hu> For consistency with the behaviour of the arp_ip_target option, let /sys/class/net/bond0/bonding/xmit_hash_policy accept and report current policy even if the bonding mode in effect does not use it. Signed-off-by: Ferenc Wagner <wferi@niif.hu> Acked-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | bonding: Coding style: break line after the if conditionWagner Ferenc2007-12-07
| | | | | | | | | | | | | | | | | | | | From: Wagner Ferenc <wferi@niif.hu> Adhere to coding style: break line after the if condition Signed-off-by: Ferenc Wagner <wferi@niif.hu> Acked-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | bonding: Purely cosmetic: rename a local variableWagner Ferenc2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | From: Wagner Ferenc <wferi@niif.hu> Code for rendering multivalue sysfs files occurs three times in this module. Rename 'buffer' to 'buf' in the first, for the sake of consistency. Signed-off-by: Ferenc Wagner <wferi@niif.hu> Acked-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | bonding: Return nothing for not applicable valuesWagner Ferenc2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From: Wagner Ferenc <wferi@niif.hu> The previous code returned '\n' (that is, a single empty line) from most files, with one exception (xmit_hash_policy), where it returned 'NA\n'. This patch consolidates each file to return nothing at all if not applicable, not even a '\n'. I find this behaviour more usual, more useful, more efficient and shorter to code from both sides. Signed-off-by: Ferenc Wagner <wferi@niif.hu> Acked-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* | bonding: Remove trailing NULs from sysfs interface.Wagner Ferenc2007-12-07
|/ | | | | | | | | | | | | | | | | | | | | | | From: Wagner Ferenc <wferi@niif.hu> Also remove trailing spaces from multivalued files. This fixes output like for example: $ od -c /sys/class/net/bond0/bonding/slaves 0000000 e t h - l e f t e t h - r i g 0000020 h t \n \0 0000025 It mostly entails deleting '+1'-s after sprintf() calls: the return value of sprintf is the number of characters printed, without the closing NUL, ie. exactly what the sysfs interface requires. The three multivalue cases are different, because they also have to swallow back a trailing space. Signed-off-by: Ferenc Wagner <wferi@niif.hu> Acked-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86Linus Torvalds2007-12-07
|\ | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86: ACPI: move timer broadcast before busmaster disable clockevents: warn once when program_event() is called with negative expiry hrtimers: avoid overflow for large relative timeouts
| * ACPI: move timer broadcast before busmaster disableThomas Gleixner2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The timer broadcast code might access HPET, which should not be accessed after the busmaster disable. In acpi_idle_enter_simple() this change also prevents, that we modify the busmaster state without going actually idle. This might leave the ACPI bm state in a stale state, when we leave the function early in the need_resched() check. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
| * clockevents: warn once when program_event() is called with negative expiryThomas Gleixner2007-12-07
| | | | | | | | | | | | | | | | | | | | The hrtimer problem with large relative timeouts resulting in a negative expiry time went unnoticed as there is no check in the clockevents_program_event() code. Put a check there with a WARN_ONCE to avoid such problems in the future. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * hrtimers: avoid overflow for large relative timeoutsThomas Gleixner2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Relative hrtimers with a large timeout value might end up as negative timer values, when the current time is added in hrtimer_start(). This in turn is causing the clockevents_set_next() function to set an huge timeout and sleep for quite a long time when we have a clock source which is capable of long sleeps like HPET. With PIT this almost goes unnoticed as the maximum delta is ~27ms. The non-hrt/nohz code sorts this out in the next timer interrupt, so we never noticed that problem which has been there since the first day of hrtimers. This bug became more apparent in 2.6.24 which activates HPET on more hardware. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-schedLinus Torvalds2007-12-07
|\ \ | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched: sched: enable early use of sched_clock() lockdep: make cli/sti annotation warnings clearer
| * | sched: enable early use of sched_clock()Ingo Molnar2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | some platforms have sched_clock() implementations that cannot be called very early during wakeup. If it's called it might hang or crash in hard to debug ways. So only call update_rq_clock() [which calls sched_clock()] if sched_init() has already been called. (rq->idle is NULL before the scheduler is initialized.) Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | lockdep: make cli/sti annotation warnings clearerIngo Molnar2007-12-07
| |/ | | | | | | | | | | | | make cli/sti annotation warnings easier to interpret. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
* | Merge branch 'for-linus' of ↵Linus Torvalds2007-12-07
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6: [AVR32] Fix wrong pt_regs in critical exception handler [AVR32] Fix copy_to_user_page() breakage [AVR32] Follow the rules when dealing with the OCD system [AVR32] Clean up OCD register usage [AVR32] Implement irqflags trace and lockdep support [AVR32] Implement stacktrace support [AVR32] Kconfig: Use def_bool instead of bool + default [AVR32] Fix invalid status register bit definitions in asm/ptrace.h [AVR32] Add TIF_RESTORE_SIGMASK to the work masks
| * | [AVR32] Fix wrong pt_regs in critical exception handlerHaavard Skinnemoen2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | It's not like it really matters at this point since the system is dying anyway, but handle_critical pushes too few registers on the stack so the register dump, which makes the register dump look a bit strange. This patch fixes it. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
| * | [AVR32] Fix copy_to_user_page() breakageHaavard Skinnemoen2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current implementation of copy_to_user_page() gives "vaddr" to the cache instruction when trying to sync the icache with the dcache. If vaddr does not exist in the TLB, the CPU will silently abort the operation, which may result in the caches staying out of sync. To fix this, pass the "dst" parameter to flush_icache_range() instead -- we know this is valid because we just wrote to it. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
| * | [AVR32] Follow the rules when dealing with the OCD systemHaavard Skinnemoen2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current debug trap handling code does a number of things that are illegal according to the AVR32 Architecture manual. Most importantly, it may try to schedule from Debug Mode, thus clearing the D bit, which can lead to "undefined behaviour". It seems like this works in most cases, but several people have observed somewhat unstable behaviour when debugging programs, including soft lockups. So there's definitely something which is not right with the existing code. The new code will never schedule from Debug mode, it will always exit Debug mode with a "retd" instruction, and if something not running in Debug mode needs to do something debug-related (like doing a single step), it will enter debug mode through a "breakpoint" instruction. The monitor code will then return directly to user space, bypassing its own saved registers if necessary (since we don't actually care about the trapped context, only the one that came before.) This adds three instructions to the common exception handling code, including one branch. It does not touch super-hot paths like the TLB miss handler. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
| * | [AVR32] Clean up OCD register usageHaavard Skinnemoen2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Generate a new set of OCD register definitions in asm/ocd.h and rename __mfdr() and __mtdr() to ocd_read() and ocd_write() respectively. The bitfield definitions are a lot more complete now, and they are entirely based on bit numbers, not masks. This is because OCD registers are frequently accessed from assembly code, where bit numbers are a lot more useful (can be fed directly to sbr, bfins, etc.) Bitfields that consist of more than one bit have two definitions: _START, which indicates the number of the first bit, and _SIZE, which indicates the number of bits. These directly correspond to the parameters taken by the bfextu, bfexts and bfins instructions. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
| * | [AVR32] Implement irqflags trace and lockdep supportHaavard Skinnemoen2007-12-07
| | | | | | | | | | | | Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
| * | [AVR32] Implement stacktrace supportHaavard Skinnemoen2007-12-07
| | | | | | | | | | | | Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
| * | [AVR32] Kconfig: Use def_bool instead of bool + defaultHaavard Skinnemoen2007-12-07
| | | | | | | | | | | | Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
| * | [AVR32] Fix invalid status register bit definitions in asm/ptrace.hHaavard Skinnemoen2007-12-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | The 'H' bit is bit 29, while the 'R' bit doesn't exist. Luckily, we don't actually use any of the bits in question. Also update show_regs() to show the Debug Mask and Debug state bits. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-21 23:14:16 -0500