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2009-11-27x86/amd-iommu: Use dev->arch->iommu to store iommu related informationJoerg Roedel
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>
2009-11-27x86/amd-iommu: Remove support for domain sharingJoerg Roedel
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>
2009-11-27x86/amd-iommu: Rearrange dma_ops related functionsJoerg Roedel
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>
2009-11-27x86/amd-iommu: Move some pte allocation functions in the right sectionJoerg Roedel
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>
2009-11-27x86/amd-iommu: Remove iommu parameter from dma_ops_domain_allocJoerg Roedel
This function doesn't use the parameter anymore so it can be removed. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-11-27x86/amd-iommu: Use get_device_id and check_device where appropriateJoerg Roedel
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>
2009-11-27x86/amd-iommu: Move find_protection_domain to helper functionsJoerg Roedel
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>
2009-11-27x86/amd-iommu: Simplify get_device_resources()Joerg Roedel
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>
2009-11-27x86/amd-iommu: Let domain_for_device handle aliasesJoerg Roedel
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>
2009-11-27x86/amd-iommu: Remove iommu specific handling from dma_ops pathJoerg Roedel
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>
2009-11-27x86/amd-iommu: Remove iommu parameter from __(un)map_singleJoerg Roedel
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>
2009-11-27x86/amd-iommu: Make alloc_new_range aware of multiple IOMMUsJoerg Roedel
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>
2009-11-27x86/amd-iommu: Remove iommu parameter from dma_ops_domain_(un)mapJoerg Roedel
The parameter is unused in these function so remove it from the parameter list. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-11-27x86/amd-iommu: Use check_device in get_device_resourcesJoerg Roedel
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>
2009-11-27x86/amd-iommu: Use check_device for amd_iommu_dma_supportedJoerg Roedel
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>
2009-11-27x86/amd-iommu: Make np-cache a global flagJoerg Roedel
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>
2009-11-27x86/amd-iommu: Reimplement flush_all_domains_on_iommu()Joerg Roedel
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>
2009-11-27x86/amd-iommu: Reimplement amd_iommu_flush_all_domains()Joerg Roedel
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>
2009-11-27x86/amd-iommu: Implement protection domain listJoerg Roedel
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>
2009-11-27x86/amd-iommu: Remove iommu_flush_domain functionJoerg Roedel
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>
2009-11-27x86/amd-iommu: Use __iommu_flush_pages for tlb flushesJoerg Roedel
This patch re-implements iommu_flush_tlb functions to use the __iommu_flush_pages logic. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-11-27x86/amd-iommu: Make iommu_flush_pages aware of multiple IOMMUsJoerg Roedel
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>
2009-11-27x86/amd-iommu: Add function to complete a tlb flushJoerg Roedel
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>
2009-11-27x86/amd-iommu: Add per IOMMU reference countingJoerg Roedel
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>
2009-11-27x86/amd-iommu: Add an index field to struct amd_iommuJoerg Roedel
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>
2009-11-27x86/amd-iommu: Update copyright headersJoerg Roedel
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>
2009-11-27x86/amd-iommu: Separate internal interface definitionsJoerg Roedel
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>
2009-11-25x86: Fix iommu=soft boot optionFUJITA Tomonori
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>
2009-11-23x86/amd-iommu: attach devices to pre-allocated domains earlyJoerg Roedel
For some devices the ACPI table may define unity map requirements which must me met when the IOMMU is enabled. So we need to attach devices to their domains as early as possible so that these mappings are in place when needed. This patch assigns the domains right after they are allocated. Otherwise this can result in I/O page faults before a driver binds to a device and BIOS is still using it. Cc: stable@kernel.org Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-11-23x86/amd-iommu: un__init iommu_setup_msiJoerg Roedel
This function may be called on the resume path and can not be dropped after booting. Cc: stable@kernel.org Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-11-17x86: gart: Clean up the code a bitIngo Molnar
Clean up various small stylistic details in the GART code. No functionality changed. Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: muli@il.ibm.com Cc: joerg.roedel@amd.com LKML-Reference: <1258287594-8777-2-git-send-email-fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-17x86: Calgary: Remove unnecessary DMA_ERROR_CODE usageFUJITA Tomonori
This cleans up iommu_alloc() a bit and removes unnecessary DMA_ERROR_CODE usage. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: muli@il.ibm.com Cc: joerg.roedel@amd.com LKML-Reference: <1258287594-8777-4-git-send-email-fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-17x86: Kill bad_dma_address variableFUJITA Tomonori
This kills bad_dma_address variable, the old mechanism to enable IOMMU drivers to make dma_mapping_error() work in IOMMU's specific way. bad_dma_address variable was introduced to enable IOMMU drivers to make dma_mapping_error() work in IOMMU's specific way. However, it can't handle systems that use both swiotlb and HW IOMMU. SO we introduced dma_map_ops->mapping_error to solve that case. Intel VT-d, GART, and swiotlb already use dma_map_ops->mapping_error. Calgary, AMD IOMMU, and nommu use zero for an error dma address. This adds DMA_ERROR_CODE and converts them to use it (as SPARC and POWER does). Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: muli@il.ibm.com Cc: joerg.roedel@amd.com LKML-Reference: <1258287594-8777-3-git-send-email-fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-17x86: gart: Add own dma_mapping_error functionFUJITA Tomonori
GART IOMMU is the only user of bad_dma_address variable. This patch converts GART to use the newer mechanism, fill in ->mapping_error() in struct dma_map_ops, to make dma_mapping_error() work in IOMMU specific way. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: muli@il.ibm.com Cc: joerg.roedel@amd.com LKML-Reference: <1258287594-8777-2-git-send-email-fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-17Merge commit 'v2.6.32-rc7' into core/iommuIngo Molnar
Merge reason: Add fixes we'll depend on. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-16x86: Don't put iommu_shutdown_noop() in init sectionHiroshi Shimamoto
It causes kernel panic on shutdown or reboot. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> LKML-Reference: <4B00BC8E.50801@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-15x86: Make calgary_iommu_init() staticFUJITA Tomonori
This makes calgary_iommu_init() static and moves it to remove the forward declaration. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: muli@il.ibm.com LKML-Reference: <20091114212603U.fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-15swiotlb: Remove duplicate swiotlb_force extern declarationsFUJITA Tomonori
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: tony.luck@intel.com LKML-Reference: <1258199198-16657-4-git-send-email-fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-15x86: Move iommu_shutdown_noop to x86_init.cFUJITA Tomonori
iommu_init_noop() is in arch/x86/kernel/x86_init.c but iommu_shutdown_noop() in arch/x86/include/asm/iommu.h. This moves iommu_shutdown_noop() to x86_init.c for consistency. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> LKML-Reference: <1258199198-16657-3-git-send-email-fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-15x86: Set dma_ops to nommu_dma_ops by defaultFUJITA Tomonori
We set dma_ops to nommu_dma_ops at two different places for x86_32 and x86_64. This unifies them by setting dma_ops to nommu_dma_ops by default. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> LKML-Reference: <1258199198-16657-2-git-send-email-fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-12Linux 2.6.32-rc7Linus Torvalds
2009-11-12Merge branch 'omap-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 * 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: omap3: Decrease cpufreq transition latency omap3: update Pandora defconfig omap3: 3430sdp: Enable Linux Regulator framework omap3: beagle: Fix USB host port power control omap3: pandora: Fix keypad keymap omap1: Amstrad Delta defconfig fixes omap: Fix omapfb/lcdc on OMAP1510 broken when PM set omap: Use resource_size omap: Fix race condition in omap dma driver
2009-11-12__generic_block_fiemap(): fix for files bigger than 4GBMike Hommey
Because of an integer overflow on start_blk, various kind of wrong results would be returned by the generic_block_fiemap() handler, such as no extents when there is a 4GB+ hole at the beginning of the file, or wrong fe_logical when an extent starts after the first 4GB. Signed-off-by: Mike Hommey <mh@glandium.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Steven Whitehouse <swhiteho@redhat.com> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Eric Sandeen <sandeen@sgi.com> Cc: Josef Bacik <jbacik@redhat.com> Cc: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-11-12pps: events reporting fix upRodolfo Giometti
PPS events must be recorded according to PPS's mode settings. If a process asks for (i.e.) capture-assert events only, when the PPS client calls the pps_event() function to save the current PPS event, we should verify the event type and then discard unwanted ones. Also, without this patch userland processes waiting for a specific PPS event (assert or clear but not both) may be awakened at wrong time. Signed-off-by: Rodolfo Giometti <giometti@linux.it> Tested-by: William S. Brasher <billb958@door.net> Tested-by: Reg Clemens <clemens@dwf.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-11-12pps: locking scheme fix up for PPS_GETPARAMSRodolfo Giometti
Userland programs may read/write PPS parameters at same time and these operations may corrupt PPS data. Signed-off-by: Rodolfo Giometti <giometti@linux.it> Tested-by: Reg Clemens <clemens@dwf.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-11-12drivers/video/msm: update to new kernelPavel Machek
TASK_INTERRUPTIBLE and friends are now only available after including <linux/sched.h>, so include it when needed. bus_id is no longer available/necessary, so remove that. Android pmem driver is not available in mainline, so remove its hooks from drivers/video. Signed-off-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-11-12gpiolib: fix device_create() result checkSergei Shtylyov
In case of failure, device_create() returns not NULL but the error code. The current code checks for non-NULL though which causes kernel oops in sysfs_create_group() when device_create() fails. Check for error using IS_ERR() and propagate the error value using PTR_ERR() instead of fixed -ENODEV code returned now... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-11-12rtc: v3020: fix v3020_mmio_read_bit()Scott Valentine
v3020_mmio_read_bit() always returns 0 when left_shift > 7. v3020_mmio_read_bit()'s return type is (unsigned char). The code returns a value masked by (1 << left_shift) that is casted to the return type. If left_shift is larger than 7, the cast will always result in a 0 return value. The problem was discovered with left_shift = 16, and the included patch corrects the problem. The bug was introduced in the last (Apr 3 2009) commit of the file, kernel versions 2.6.30 and later. Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: Raphael Assenat <raph@8d.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-11-12rtc-vr41xx: fix do_div() warningYoichi Yuasa
drivers/rtc/rtc-vr41xx.c: In function 'vr41xx_rtc_irq_set_freq': drivers/rtc/rtc-vr41xx.c:217: warning: comparison of distinct pointer types lacks a cast drivers/rtc/rtc-vr41xx.c:217: warning: right shift count >= width of type drivers/rtc/rtc-vr41xx.c:217: warning: passing argument 1 of '__div64_32' from incompatible pointer type include/asm-generic/div64.h:35: note: expected 'uint64_t *' but argument is of type 'long unsigned int *' Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-11-12exec: setup_arg_pages() fails to return errorsAnton Blanchard
In setup_arg_pages we work hard to assign a value to ret, but on exit we always return 0. Also remove a now duplicated exit path and branch to out_unlock instead. Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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