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* Merge branch 'core-locking-for-linus' of ↵Linus Torvalds2009-12-0510-245/+422
|\ | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: mutex: Fix missing conditions to build mutex_spin_on_owner() mutex: Better control mutex adaptive spinning config locking, task_struct: Reduce size on TRACE_IRQFLAGS and 64bit locking: Use __[SPIN|RW]_LOCK_UNLOCKED in [spin|rw]_lock_init() locking: Remove unused prototype locking: Reduce ifdefs in kernel/spinlock.c locking: Make inlining decision Kconfig based
| * mutex: Fix missing conditions to build mutex_spin_on_owner()Frederic Weisbecker2009-12-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We don't need to build mutex_spin_on_owner() if we have CONFIG_DEBUG_MUTEXES or CONFIG_HAVE_DEFAULT_NO_SPIN_MUTEXES as it won't be used under such configs. Use CONFIG_MUTEX_SPIN_ON_OWNER as it gathers all the necessary checks before building it. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1259783357-8542-2-git-send-regression-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org>
| * mutex: Better control mutex adaptive spinning configFrederic Weisbecker2009-12-032-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | Introduce CONFIG_MUTEX_SPIN_ON_OWNER so that we can centralize in a single place the conditions that determine its definition and use. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <1259783357-8542-1-git-send-regression-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org>
| * locking, task_struct: Reduce size on TRACE_IRQFLAGS and 64bitHiroshi Shimamoto2009-12-021-5/+5
| | | | | | | | | | | | | | | | | | | | Reorder task_struct field for TRACE_IRQFLAGS to remove padding on 64-bit. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <4B135F50.8070302@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * locking: Use __[SPIN|RW]_LOCK_UNLOCKED in [spin|rw]_lock_init()Thomas Gleixner2009-11-241-2/+2
| | | | | | | | | | | | | | SPIN_LOCK_UNLOCKED and RW_LOCK_UNLOCKED are deprecated. Replace them with the __*_LOCK_UNLOCKED variants. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * locking: Remove unused prototypeThomas Gleixner2009-11-241-2/+0
| | | | | | | | | | | | | | commit 910067d1(remove generic__raw_read_trylock()) removed the implementation but left the prototype around. Remove it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * locking: Reduce ifdefs in kernel/spinlock.cThomas Gleixner2009-11-131-131/+127
| | | | | | | | | | | | | | | | | | | | | | | | | | | | With the Kconfig based inline decisions we can remove extra ifdefs in kernel/spinlock.c by creating the complex lockbreak functions as inlines which are inserted into the non inlined lock functions. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> LKML-Reference: <20091109151428.548614772@linutronix.de> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
| * locking: Make inlining decision Kconfig basedThomas Gleixner2009-11-136-104/+284
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 892a7c67 (locking: Allow arch-inlined spinlocks) implements the selection of which lock functions are inlined based on defines in arch/.../spinlock.h: #define __always_inline__LOCK_FUNCTION Despite of the name __always_inline__* the lock functions can be built out of line depending on config options. Also if the arch does not set some inline defines the generic code might set them; again depending on config options. This makes it unnecessary hard to figure out when and which lock functions are inlined. Aside of that it makes it way harder and messier for -rt to manipulate the lock functions. Convert the inlining decision to CONFIG switches. Each lock function is inlined depending on CONFIG_INLINE_*. The configs implement the existing dependencies. The architecture code can select ARCH_INLINE_* to signal that it wants the corresponding lock function inlined. ARCH_INLINE_* is necessary as Kconfig ignores "depends on" restrictions when a config element is selected. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> LKML-Reference: <20091109151428.504477141@linutronix.de> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
* | Merge branch 'core-ipi-for-linus' of ↵Linus Torvalds2009-12-052-9/+58
|\ \ | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-ipi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: generic-ipi: Add smp_call_function_any() generic-ipi: Fix misleading smp_call_function*() description
| * | generic-ipi: Add smp_call_function_any()Rusty Russell2009-11-182-1/+55
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Andrew points out that acpi-cpufreq uses cpumask_any, when it really would prefer to use the same CPU if possible (to avoid an IPI). In general, this seems a good idea to offer. [ tglx: Documented selection preference and Inlined the UP case to avoid the copy of smp_call_function_single() and the extra EXPORT ] Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Ingo Molnar <mingo@elte.hu> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Len Brown <len.brown@intel.com> Cc: Zhao Yakui <yakui.zhao@intel.com> Cc: Dave Jones <davej@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Mike Galbraith <efault@gmx.de> Cc: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | generic-ipi: Fix misleading smp_call_function*() descriptionSheng Yang2009-10-231-8/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After commit:8969a5ede0f9e17da4b943712429aef2c9bcd82b "generic-ipi: remove kmalloc()", wait = 0 can be guaranteed. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Nick Piggin <npiggin@suse.de> LKML-Reference: <1256210374-25354-1-git-send-email-sheng@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | Merge branch 'core-iommu-for-linus' of ↵Linus Torvalds2009-12-0533-883/+1068
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (63 commits) x86, Calgary IOMMU quirk: Find nearest matching Calgary while walking up the PCI tree x86/amd-iommu: Remove amd_iommu_pd_table x86/amd-iommu: Move reset_iommu_command_buffer out of locked code x86/amd-iommu: Cleanup DTE flushing code x86/amd-iommu: Introduce iommu_flush_device() function x86/amd-iommu: Cleanup attach/detach_device code x86/amd-iommu: Keep devices per domain in a list x86/amd-iommu: Add device bind reference counting x86/amd-iommu: Use dev->arch->iommu to store iommu related information x86/amd-iommu: Remove support for domain sharing x86/amd-iommu: Rearrange dma_ops related functions x86/amd-iommu: Move some pte allocation functions in the right section x86/amd-iommu: Remove iommu parameter from dma_ops_domain_alloc x86/amd-iommu: Use get_device_id and check_device where appropriate x86/amd-iommu: Move find_protection_domain to helper functions x86/amd-iommu: Simplify get_device_resources() x86/amd-iommu: Let domain_for_device handle aliases x86/amd-iommu: Remove iommu specific handling from dma_ops path x86/amd-iommu: Remove iommu parameter from __(un)map_single x86/amd-iommu: Make alloc_new_range aware of multiple IOMMUs ...
| * | | x86, Calgary IOMMU quirk: Find nearest matching Calgary while walking up the ↵Darrick J. Wong2009-12-031-5/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PCI tree On a multi-node x3950M2 system, there's a slight oddity in the PCI device tree for all secondary nodes: 30:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1) \-33:00.0 PCI bridge: IBM CalIOC2 PCI-E Root Port (rev 01) \-34:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 1078 (rev 04) ...as compared to the primary node: 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1) \-01:00.0 VGA compatible controller: ATI Technologies Inc ES1000 (rev 02) 03:00.0 PCI bridge: IBM CalIOC2 PCI-E Root Port (rev 01) \-04:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 1078 (rev 04) In both nodes, the LSI RAID controller hangs off a CalIOC2 device, but on the secondary nodes, the BIOS hides the VGA device and substitutes the device tree ending with the disk controller. It would seem that Calgary devices don't necessarily appear at the top of the PCI tree, which means that the current code to find the Calgary IOMMU that goes with a particular device is buggy. Rather than walk all the way to the top of the PCI device tree and try to match bus number with Calgary descriptor, the code needs to examine each parent of the particular device; if it encounters a Calgary with a matching bus number, simply use that. Otherwise, we BUG() when the bus number of the Calgary doesn't match the bus number of whatever's at the top of the device tree. Extra note: This patch appears to work correctly for the x3950 that came before the x3950 M2. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Acked-by: Muli Ben-Yehuda <muli@il.ibm.com> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Joerg Roedel <joerg.roedel@amd.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Cc: Jon D. Mason <jdmason@kudzu.us> Cc: Corinna Schultz <coschult@us.ibm.com> Cc: <stable@kernel.org> LKML-Reference: <20091202230556.GG10295@tux1.beaverton.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | Merge branch 'gart/fixes' into amd-iommu/2.6.33Joerg Roedel2009-11-271-2/+1
| |\ \ \
| | * | | agp/amd64: Remove GART dependency on AGP_AMD64Pavel Vasilyev2009-10-291-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The GART IOMMU code has no strong dependency to the AMD64 AGP code. So the automatic selection of AGP_AMD64 for GART can be removed. Cc: Dave Jones <davej@redhat.com> Signed-off-by: Pavel Vasilyev <pavel@pavlinux.ru> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Remove amd_iommu_pd_tableJoerg Roedel2009-11-273-45/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The data that was stored in this table is now available in dev->archdata.iommu. So this table is not longer necessary. This patch removes the remaining uses of that variable and removes it from the code. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Move reset_iommu_command_buffer out of locked codeJoerg Roedel2009-11-271-7/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the ugly contruct where the iommu->lock must be released while before calling the reset_iommu_command_buffer function. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Cleanup DTE flushing codeJoerg Roedel2009-11-272-66/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch cleans up the code to flush device table entries in the IOMMU. With this chance the driver can get rid of the iommu_queue_inv_dev_entry() function. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Introduce iommu_flush_device() functionJoerg Roedel2009-11-271-4/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a function to flush a DTE entry for a given struct device and replaces iommu_queue_inv_dev_entry calls with this function where appropriate. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Cleanup attach/detach_device codeJoerg Roedel2009-11-271-44/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch cleans up the attach_device and detach_device paths and fixes reference counting while at it. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Keep devices per domain in a listJoerg Roedel2009-11-272-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces a list to each protection domain which keeps all devices associated with the domain. This can be used later to optimize certain functions and to completly remove the amd_iommu_pd_table. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Add device bind reference countingJoerg Roedel2009-11-272-8/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a reference count to each device to count how often the device was bound to that domain. This is important for single devices that act as an alias for a number of others. These devices must stay bound to their domains until all devices that alias to it are unbound from the same domain. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Use dev->arch->iommu to store iommu related informationJoerg Roedel2009-11-273-24/+95
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes IOMMU code to use dev->archdata->iommu to store information about the alias device and the domain the device is attached to. This allows the driver to get rid of the amd_iommu_pd_table in the future. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Remove support for domain sharingJoerg Roedel2009-11-273-28/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch makes device isolation mandatory and removes support for the amd_iommu=share option. This simplifies the code in several places. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Rearrange dma_ops related functionsJoerg Roedel2009-11-271-47/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch rearranges two dma_ops related functions so that their forward declarations are not longer necessary. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Move some pte allocation functions in the right sectionJoerg Roedel2009-11-271-99/+94
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch moves alloc_pte() and fetch_pte() into the page table handling code section so that the forward declarations for them could be removed. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Remove iommu parameter from dma_ops_domain_allocJoerg Roedel2009-11-271-8/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This function doesn't use the parameter anymore so it can be removed. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Use get_device_id and check_device where appropriateJoerg Roedel2009-11-271-61/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The logic of these two functions is reimplemented (at least in parts) in places in the code. This patch removes these code duplications and uses the functions instead. As a side effect it moves check_device() to the helper function code section. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Move find_protection_domain to helper functionsJoerg Roedel2009-11-271-29/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a helper function and when its placed in the helper function section we can remove its forward declaration. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Simplify get_device_resources()Joerg Roedel2009-11-271-50/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the previous changes the get_device_resources function can be simplified even more. The only important information for the callers is the protection domain. This patch renames the function to get_domain() and let it only return the protection domain for a device. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Let domain_for_device handle aliasesJoerg Roedel2009-11-271-92/+135
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If there is no domain associated to a device yet and the device has an alias device which already has a domain, the original device needs to have the same domain as the alias device. This patch changes domain_for_device to handle this situation and directly assigns the alias device domain to the device in this situation. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Remove iommu specific handling from dma_ops pathJoerg Roedel2009-11-271-17/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch finishes the removal of all iommu specific handling code in the dma_ops path. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Remove iommu parameter from __(un)map_singleJoerg Roedel2009-11-271-10/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the prior changes this parameter is not longer required. This patch removes it from the function and all callers. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Make alloc_new_range aware of multiple IOMMUsJoerg Roedel2009-11-271-12/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the assumption that an dma_ops domain is only bound to one IOMMU was given up we need to make alloc_new_range aware of it. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Remove iommu parameter from dma_ops_domain_(un)mapJoerg Roedel2009-11-271-7/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The parameter is unused in these function so remove it from the parameter list. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Use check_device in get_device_resourcesJoerg Roedel2009-11-271-58/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Every call-place of get_device_resources calls check_device before it. So call it from get_device_resources directly and simplify the code. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Use check_device for amd_iommu_dma_supportedJoerg Roedel2009-11-271-16/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The check_device logic needs to include the dma_supported checks to be really sure. Merge the dma_supported logic into check_device and use it to implement dma_supported. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Make np-cache a global flagJoerg Roedel2009-11-273-7/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The non-present cache flag was IOMMU local until now which doesn't make sense. Make this a global flag so we can remove the lase user of 'struct iommu' in the map/unmap path. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Reimplement flush_all_domains_on_iommu()Joerg Roedel2009-11-271-19/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch reimplements the function flush_all_domains_on_iommu to use the global protection domain list. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Reimplement amd_iommu_flush_all_domains()Joerg Roedel2009-11-271-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch reimplementes the amd_iommu_flush_all_domains function to use the global protection domain list instead of flushing every domain on every IOMMU. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Implement protection domain listJoerg Roedel2009-11-273-0/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds code to keep a global list of all protection domains. This allows to simplify the resume code. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Remove iommu_flush_domain functionJoerg Roedel2009-11-271-16/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This iommu_flush_tlb_pde function does essentially the same. So the iommu_flush_domain function is redundant and can be removed. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Use __iommu_flush_pages for tlb flushesJoerg Roedel2009-11-271-15/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch re-implements iommu_flush_tlb functions to use the __iommu_flush_pages logic. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Make iommu_flush_pages aware of multiple IOMMUsJoerg Roedel2009-11-271-7/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch extends the iommu_flush_pages function to flush the TLB entries on all IOMMUs the domain has devices on. This basically gives up the former assumption that dma_ops domains are only bound to one IOMMU in the system. For dma_ops domains this is still true but not for IOMMU-API managed domains. Giving this assumption up for dma_ops domains too allows code simplification. Further it splits out the main logic into a generic function which can be used by iommu_flush_tlb too. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Add function to complete a tlb flushJoerg Roedel2009-11-271-6/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a function to the AMD IOMMU driver which completes all queued commands an all IOMMUs a specific domain has devices attached on. This is required in a later patch when per-domain flushing is implemented. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Add per IOMMU reference countingJoerg Roedel2009-11-272-3/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds reference counting for protection domains per IOMMU. This allows a smarter TLB flushing strategy. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Add an index field to struct amd_iommuJoerg Roedel2009-11-272-0/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds an index field to struct amd_iommu which can be used to lookup it up in an array. This index will be used in struct protection_domain to keep track which protection domain has devices behind which IOMMU. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Update copyright headersJoerg Roedel2009-11-274-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch updates the copyright headers in the relevant AMD IOMMU driver files to match the date of the latest changes. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86/amd-iommu: Separate internal interface definitionsJoerg Roedel2009-11-275-11/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch moves all function declarations which are only used inside the driver code to a seperate header file. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | | | x86: Fix iommu=soft boot optionFUJITA Tomonori2009-11-251-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | iommu=soft boot option forces the kernel to use swiotlb. ( This has the side-effect of enabling the swiotlb over the GART if this boot option is provided. This is the desired behavior of the swiotlb boot option and works like that for all other hw-IOMMU drivers. ) Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: yinghai@kernel.org LKML-Reference: <20091125084611O.fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-10 18:04:21 +0000