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2013-03-27Merge tag 'iommu-fixes-v3.9-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU fixes from Joerg Roedel: "Here are some fixes which have collected since Linux v3.9-rc1. The most important one fixes a long-standing regressen which make re-hotplugged devices unusable when AMD IOMMU is used. The other patches fix build issues (build regression on OMAP and a section mismatch). One patch just removes a duplicate header include." * tag 'iommu-fixes-v3.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: iommu/amd: Make sure dma_ops are set for hotplug devices x86, io_apic: remove duplicated include from irq_remapping.c iommu: OMAP: build only on OMAP2+ amd_iommu_init: remove __init from amd_iommu_erratum_746_workaround
2013-03-27iommu/amd: Make sure dma_ops are set for hotplug devicesJoerg Roedel
There is a bug introduced with commit 27c2127 that causes devices which are hot unplugged and then hot-replugged to not have per-device dma_ops set. This causes these devices to not function correctly. Fixed with this patch. Cc: stable@vger.kernel.org Reported-by: Andreas Degert <andreas.degert@googlemail.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-03-26x86, io_apic: remove duplicated include from irq_remapping.cWei Yongjun
Remove duplicated include. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-03-09iommu: OMAP: build only on OMAP2+Arnd Bergmann
The OMAP IOMMU driver intentionally fails to build on OMAP1 platforms, so we should not allow enabling it there. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Joerg Roedel <joro@8bytes.org> Cc: iommu@lists.linux-foundation.org Cc: Ohad Ben-Cohen <ohad@wizery.com> Cc: Tony Lindgren <tony@atomide.com> Cc: Omar Ramirez Luna <omar.luna@linaro.org> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-03-09amd_iommu_init: remove __init from amd_iommu_erratum_746_workaroundNikola Pajkovsky
commit 318fe78 ("IOMMU, AMD Family15h Model10-1Fh erratum 746 Workaround") added amd_iommu_erratum_746_workaround and it's marked as __init, which is wrong WARNING: drivers/iommu/built-in.o(.text+0x639c): Section mismatch in reference from the function iommu_init_pci() to the function .init.text:amd_iommu_erratum_746_workaround() The function iommu_init_pci() references the function __init amd_iommu_erratum_746_workaround(). This is often because iommu_init_pci lacks a __init annotation or the annotation of amd_iommu_erratum_746_workaround is wrong. Signed-off-by: Nikola Pajkovsky <npajkovs@redhat.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-03-06iommu, x86: Add DMA remap fault reasonLi, Zhen-Hua
The number of DMA fault reasons in intel's document are from 1 to 0xD, but in dmar.c fault reason 0xD is not printed out. In this document: "Intel Virtualization Technology for Directed I/O Architecture Specification" http://download.intel.com/technology/computing/vptech/Intel(r)_VT_for_Direct_IO.pdf Chapter 4. Support For Device-IOTLBs Table 6. Unsuccessful Translated Requests There is fault reason for 0xD not listed in kernel: Present context-entry used to process translation request specifies blocking of Translation Requests (Translation Type (T) field value not equal to 01b). This patch adds reason 0xD as well. Signed-off-by: Li, Zhen-Hua <zhen-hual@hp.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Donald Dutile <ddutile@redhat.com> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Hannes Reinecke <hare@suse.de> Link: http://lkml.kernel.org/r/1362537797-6034-1-git-send-email-zhen-hual@hp.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-02-26Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs pile (part one) from Al Viro: "Assorted stuff - cleaning namei.c up a bit, fixing ->d_name/->d_parent locking violations, etc. The most visible changes here are death of FS_REVAL_DOT (replaced with "has ->d_weak_revalidate()") and a new helper getting from struct file to inode. Some bits of preparation to xattr method interface changes. Misc patches by various people sent this cycle *and* ocfs2 fixes from several cycles ago that should've been upstream right then. PS: the next vfs pile will be xattr stuff." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (46 commits) saner proc_get_inode() calling conventions proc: avoid extra pde_put() in proc_fill_super() fs: change return values from -EACCES to -EPERM fs/exec.c: make bprm_mm_init() static ocfs2/dlm: use GFP_ATOMIC inside a spin_lock ocfs2: fix possible use-after-free with AIO ocfs2: Fix oops in ocfs2_fast_symlink_readpage() code path get_empty_filp()/alloc_file() leave both ->f_pos and ->f_version zero target: writev() on single-element vector is pointless export kernel_write(), convert open-coded instances fs: encode_fh: return FILEID_INVALID if invalid fid_type kill f_vfsmnt vfs: kill FS_REVAL_DOT by adding a d_weak_revalidate dentry op nfsd: handle vfs_getattr errors in acl protocol switch vfs_getattr() to struct path default SET_PERSONALITY() in linux/elf.h ceph: prepopulate inodes only when request is aborted d_hash_and_lookup(): export, switch open-coded instances 9p: switch v9fs_set_create_acl() to inode+fid, do it before d_instantiate() 9p: split dropping the acls from v9fs_set_create_acl() ...
2013-02-26Merge tag 'iommu-updates-v3.9' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU Updates from Joerg Roedel: "Besides some fixes and cleanups in the code there are three more important changes to point out this time: * New IOMMU driver for the ARM SHMOBILE platform * An IOMMU-API extension for non-paging IOMMUs (required for upcoming PAMU driver) * Rework of the way the Tegra IOMMU driver accesses its registetrs - register windows are easier to extend now. There are also a few changes to non-iommu code, but that is acked by the respective maintainers." * tag 'iommu-updates-v3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (23 commits) iommu/tegra: assume CONFIG_OF in SMMU driver iommu/tegra: assume CONFIG_OF in gart driver iommu/amd: Remove redundant NULL check before dma_ops_domain_free(). iommu/amd: Initialize device table after dma_ops iommu/vt-d: Zero out allocated memory in dmar_enable_qi iommu/tegra: smmu: Fix incorrect mask for regbase iommu/exynos: Make exynos_sysmmu_disable static ARM: mach-shmobile: r8a7740: Add IPMMU device ARM: mach-shmobile: sh73a0: Add IPMMU device ARM: mach-shmobile: sh7372: Add IPMMU device iommu/shmobile: Add iommu driver for Renesas IPMMU modules iommu: Add DOMAIN_ATTR_WINDOWS domain attribute iommu: Add domain window handling functions iommu: Implement DOMAIN_ATTR_PAGING attribute iommu: Check for valid pgsize_bitmap in iommu_map/unmap iommu: Make sure DOMAIN_ATTR_MAX is really the maximum iommu/tegra: smmu: Change SMMU's dependency on ARCH_TEGRA iommu/tegra: smmu: Use helper function to check for valid register offset iommu/tegra: smmu: Support variable MMIO ranges/blocks iommu/tegra: Add missing spinlock initialization ...
2013-02-26tegra: don't wank with d_find_alias()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-25Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
Pull drm merge from Dave Airlie: "Highlights: - TI LCD controller KMS driver - TI OMAP KMS driver merged from staging - drop gma500 stub driver - the fbcon locking fixes - the vgacon dirty like zebra fix. - open firmware videomode and hdmi common code helpers - major locking rework for kms object handling - pageflip/cursor won't block on polling anymore! - fbcon helper and prime helper cleanups - i915: all over the map, haswell power well enhancements, valleyview macro horrors cleaned up, killing lots of legacy GTT code, - radeon: CS ioctl unification, deprecated UMS support, gpu reset rework, VM fixes - nouveau: reworked thermal code, external dp/tmds encoder support (anx9805), fences sleep instead of polling, - exynos: all over the driver fixes." Lovely conflict in radeon/evergreen_cs.c between commit de0babd60d8d ("drm/radeon: enforce use of radeon_get_ib_value when reading user cmd") and the new changes that modified that evergreen_dma_cs_parse() function. * 'drm-next' of git://people.freedesktop.org/~airlied/linux: (508 commits) drm/tilcdc: only build on arm drm/i915: Revert hdmi HDP pin checks drm/tegra: Add list of framebuffers to debugfs drm/tegra: Fix color expansion drm/tegra: Split DC_CMD_STATE_CONTROL register write drm/tegra: Implement page-flipping support drm/tegra: Implement VBLANK support drm/tegra: Implement .mode_set_base() drm/tegra: Add plane support drm/tegra: Remove bogus tegra_framebuffer structure drm: Add consistency check for page-flipping drm/radeon: Use generic HDMI infoframe helpers drm/tegra: Use generic HDMI infoframe helpers drm: Add EDID helper documentation drm: Add HDMI infoframe helpers video: Add generic HDMI infoframe helpers drm: Add some missing forward declarations drm: Move mode tables to drm_edid.c drm: Remove duplicate drm_mode_cea_vic() gma500: Fix n, m1 and m2 clock limits for sdvo and lvds ...
2013-02-22new helper: file_inode(file)Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-21Merge tag 'driver-core-3.9-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core patches from Greg Kroah-Hartman: "Here is the big driver core merge for 3.9-rc1 There are two major series here, both of which touch lots of drivers all over the kernel, and will cause you some merge conflicts: - add a new function called devm_ioremap_resource() to properly be able to check return values. - remove CONFIG_EXPERIMENTAL Other than those patches, there's not much here, some minor fixes and updates" Fix up trivial conflicts * tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (221 commits) base: memory: fix soft/hard_offline_page permissions drivercore: Fix ordering between deferred_probe and exiting initcalls backlight: fix class_find_device() arguments TTY: mark tty_get_device call with the proper const values driver-core: constify data for class_find_device() firmware: Ignore abort check when no user-helper is used firmware: Reduce ifdef CONFIG_FW_LOADER_USER_HELPER firmware: Make user-mode helper optional firmware: Refactoring for splitting user-mode helper code Driver core: treat unregistered bus_types as having no devices watchdog: Convert to devm_ioremap_resource() thermal: Convert to devm_ioremap_resource() spi: Convert to devm_ioremap_resource() power: Convert to devm_ioremap_resource() mtd: Convert to devm_ioremap_resource() mmc: Convert to devm_ioremap_resource() mfd: Convert to devm_ioremap_resource() media: Convert to devm_ioremap_resource() iommu: Convert to devm_ioremap_resource() drm: Convert to devm_ioremap_resource() ...
2013-02-19Merge branch 'x86-apic-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86/apic changes from Ingo Molnar: "Main changes: - Multiple MSI support added to the APIC, PCI and AHCI code - acked by all relevant maintainers, by Alexander Gordeev. The advantage is that multiple AHCI ports can have multiple MSI irqs assigned, and can thus spread to multiple CPUs. [ Drivers can make use of this new facility via the pci_enable_msi_block_auto() method ] - x86 IOAPIC code from interrupt remapping cleanups from Joerg Roedel: These patches move all interrupt remapping specific checks out of the x86 core code and replaces the respective call-sites with function pointers. As a result the interrupt remapping code is better abstraced from x86 core interrupt handling code. - Various smaller improvements, fixes and cleanups." * 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits) x86/intel/irq_remapping: Clean up x2apic opt-out security warning mess x86, kvm: Fix intialization warnings in kvm.c x86, irq: Move irq_remapped out of x86 core code x86, io_apic: Introduce eoi_ioapic_pin call-back x86, msi: Introduce x86_msi.compose_msi_msg call-back x86, irq: Introduce setup_remapped_irq() x86, irq: Move irq_remapped() check into free_remapped_irq x86, io-apic: Remove !irq_remapped() check from __target_IO_APIC_irq() x86, io-apic: Move CONFIG_IRQ_REMAP code out of x86 core x86, irq: Add data structure to keep AMD specific irq remapping information x86, irq: Move irq_remapping_enabled declaration to iommu code x86, io_apic: Remove irq_remapping_enabled check in setup_timer_IRQ0_pin x86, io_apic: Move irq_remapping_enabled checks out of check_timer() x86, io_apic: Convert setup_ioapic_entry to function pointer x86, io_apic: Introduce set_affinity function pointer x86, msi: Use IRQ remapping specific setup_msi_irqs routine x86, hpet: Introduce x86_msi_ops.setup_hpet_msi x86, io_apic: Introduce x86_io_apic_ops.print_entries for debugging x86, io_apic: Introduce x86_io_apic_ops.disable() x86, apic: Mask IO-APIC and PIC unconditionally on LAPIC resume ...
2013-02-20intel/iommu: force writebuffer-flush quirk on Gen 4 ChipsetsDaniel Vetter
We already have the quirk entry for the mobile platform, but also reports on some desktop versions. So be paranoid and set it everywhere. References: http://www.mail-archive.com/dri-devel@lists.freedesktop.org/msg33138.html Cc: stable@vger.kernel.org Cc: David Woodhouse <dwmw2@infradead.org> Cc: "Sankaran, Rajesh" <rajesh.sankaran@intel.com> Reported-and-tested-by: Mihai Moldovan <ionic@ionic.de> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-02-19Merge branches 'core', 'arm/omap', 'iommu/fixes', 'arm/tegra', ↵Joerg Roedel
'arm/shmobile', 'arm/exynos', 'x86/vt-d' and 'x86/amd' into next
2013-02-19iommu/tegra: assume CONFIG_OF in SMMU driverStephen Warren
Tegra only supports, and always enables, device tree. Remove all ifdefs for DT support from the driver. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-19iommu/tegra: assume CONFIG_OF in gart driverStephen Warren
Tegra only supports, and always enables, device tree. Remove all ifdefs for DT support from the driver. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-13iommu/amd: Remove redundant NULL check before dma_ops_domain_free().Cyril Roelandt
dma_ops_domain_free on a NULL pointer is a no-op, so the NULL check in amd_iommu_init_dma_ops() can be removed. Signed-off-by: Cyril Roelandt <tipecaml@gmail.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-07iommu/amd: Initialize device table after dma_opsJoerg Roedel
When dma_ops are initialized the unity mappings are created. The init_device_table_dma() function makes sure DMA from all devices is blocked by default. This opens a short window in time where DMA to unity mapped regions is blocked by the IOMMU. Make sure this does not happen by initializing the device table after dma_ops. Cc: stable@vger.kernel.org Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-07iommu/vt-d: Zero out allocated memory in dmar_enable_qiHannes Reinecke
kmemcheck complained about the use of uninitialized memory. Fix by using kzalloc instead of kmalloc. Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-07iommu/tegra: smmu: Fix incorrect mask for regbaseHiroshi Doyu
This fixes kernel crash because of BUG() in register address validation. Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-07iommu/exynos: Make exynos_sysmmu_disable staticSachin Kamat
'exynos_sysmmu_disable' is used only in this file and can be made static. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-06iommu/shmobile: Add iommu driver for Renesas IPMMU modulesHideki EIRAKU
This is the Renesas IPMMU driver and IOMMU API implementation. The IPMMU module supports the MMU function and the PMB function. The MMU function provides address translation by pagetable compatible with ARMv6. The PMB function provides address translation including tile-linear translation. This patch implements the MMU function. The iommu driver does not register a platform driver directly because: - the register space of the MMU function and the PMB function have a common register (used for settings flush), so they should ideally have a way to appropriately share this register. - the MMU function uses the IOMMU API while the PMB function does not. - the two functions may be used independently. Signed-off-by: Hideki EIRAKU <hdk@igel.co.jp> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-06iommu: Add DOMAIN_ATTR_WINDOWS domain attributeJoerg Roedel
This attribute can be used to set and get the number of subwindows on IOMMUs that are window-based. Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-06iommu: Add domain window handling functionsJoerg Roedel
Add the iommu_domain_window_enable() and iommu_domain_window_disable() functions to the IOMMU-API. These functions will be used to setup domains that are based on subwindows and not on paging. Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-06iommu: Implement DOMAIN_ATTR_PAGING attributeJoerg Roedel
This attribute of a domain can be queried to find out if the domain supports setting up page-tables using the iommu_map() and iommu_unmap() functions. Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-06iommu: Check for valid pgsize_bitmap in iommu_map/unmapJoerg Roedel
In case the page-size bitmap is zero the code path in iommu_map and iommu_unmap is undefined. Make it defined and return -ENODEV in this case. Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-05iommu/tegra: smmu: Change SMMU's dependency on ARCH_TEGRAHiroshi Doyu
Theoretically TEGRA_IOMMU_SMMU depends on ARCH_TEGRA_3x_SOC and ARCH_TEGRA_114_SOC only. This patch allows a Tegra20 only kernel to enable SMMU(Tegra20 doesn't have a SMMU), which could avoid editing this Kconfig entry every time we add a new chip later. Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-05iommu/tegra: smmu: Use helper function to check for valid register offsetJoerg Roedel
Do not repeat the checking loop in the read and write functions. Use a single helper function for that check and call it in both accessors. Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-05iommu/tegra: smmu: Support variable MMIO ranges/blocksHiroshi Doyu
Presently SMMU registers are located in discontiguous 3 blocks. They are interleaved by MC registers. Ideally SMMU register blocks should be in an independent one block, but it is too late to change this H/W design. In the future Tegra chips over some generations, it is expected that some of register block "size" can be extended towards the end and also more new register blocks will be added at most a few blocks. The starting address of each existing block won't change. This patch allocates multiple number of register blocks dynamically based on the info passed from DT. Those ranges are verified in the accessors{read,write}. This may sacrifice some performance because a new accessors prevents compiler optimization of a fixed size register offset calculation. Since SMMU register accesses are not so frequent, this would be acceptable. This patch is necessary to unify "tegra-smmu.ko" over some Tegra SoC generations. Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com> Reviewed-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-04iommu/tegra: Add missing spinlock initializationSami Liedes
Fix tegra_smmu_probe() to initialize client_lock spinlocks in per-address-space structures. Signed-off-by: Sami Liedes <sliedes@nvidia.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-02-03x86/intel/irq_remapping: Clean up x2apic opt-out security warning messAndy Lutomirski
Current kernels print this on my Dell server: ------------[ cut here ]------------ WARNING: at drivers/iommu/intel_irq_remapping.c:542 intel_enable_irq_remapping+0x7b/0x27e() Hardware name: PowerEdge R620 Your BIOS is broken and requested that x2apic be disabled This will leave your machine vulnerable to irq-injection attacks Use 'intremap=no_x2apic_optout' to override BIOS request [...] Enabled IRQ remapping in xapic mode x2apic not enabled, IRQ remapping is in xapic mode This is inconsistent with itself -- interrupt remapping is *on*. Fix the mess by making the warnings say what they mean and my making sure that compatibility format interrupts (the dangerous ones) are disabled if x2apic is present regardless of BIOS settings. With this patch applied, the output is: Your BIOS is broken and requested that x2apic be disabled. This will slightly decrease performance. Use 'intremap=no_x2apic_optout' to override BIOS request. Enabled IRQ remapping in xapic mode x2apic not enabled, IRQ remapping is in xapic mode This should make us as or more secure than we are now and replace a rather scary warning with a much less scary warning on silly but functional systems. Signed-off-by: Andy Lutomirski <luto@amacapital.net> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Gleb Natapov <gleb@redhat.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Alex Williamson <alex.williamson@redhat.com> Link: http://lkml.kernel.org/r/2011b943a886fd7c46079eb10bc24fc130587503.1359759303.git.luto@amacapital.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-01-30Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
Pull drm fixes from Dave Airlie: "Intel, radeon and exynos fixes. Nothing too major or wierd: one dmar fix and a radeon cursor corruption, along with misc exynos fixes." * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (21 commits) drm/exynos: add check for the device power status drm/exynos: Make 'drm_hdmi_get_edid' static drm/exynos: fimd and ipp are broken on multiplatform drm/exynos: don't include plat/gpio-cfg.h drm/exynos: Remove "internal" interrupt handling drm/exynos: Add missing static specifiers in exynos_drm_rotator.c drm/exynos: Replace mdelay with usleep_range drm/exynos: Make ipp_handle_cmd_work static drm/exynos: Make g2d_userptr_get_dma_addr static drm/exynos: consider DMA_NONE flag to dmabuf import drm/exynos: free sg object if dma_map_sg is failed drm/exynos: added validation of edid for vidi connection drm/exynos: let drm handle edid allocations drm/radeon: Enable DMA_IB_SWAP_ENABLE on big endian hosts. drm/radeon: fix a rare case of double kfree radeon_display: Use pointer return error codes drm/radeon: fix cursor corruption on DCE6 and newer drm/i915: dump UTS_RELEASE into the error_state iommu/intel: disable DMAR for g4x integrated gfx drm/i915: GFX_MODE Flush TLB Invalidate Mode must be '1' for scanline waits ...
2013-01-28IOMMU, AMD Family15h Model10-1Fh erratum 746 WorkaroundSuravee Suthikulpanit
The IOMMU may stop processing page translations due to a perceived lack of credits for writing upstream peripheral page service request (PPR) or event logs. If the L2B miscellaneous clock gating feature is enabled the IOMMU does not properly register credits after the log request has completed, leading to a potential system hang. BIOSes are supposed to disable L2B micellaneous clock gating by setting L2_L2B_CK_GATE_CONTROL[CKGateL2BMiscDisable](D0F2xF4_x90[2]) = 1b. This patch corrects that for those which do not enable this workaround. Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Acked-by: Borislav Petkov <bp@suse.de> Cc: stable@vger.kernel.org Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-01-28iommu/omap: Remove unnecessary null pointer checkCong Ding
The pointer obj is dereferenced in line 146 and 149 respectively, so it is not necessary to check null again in line 149 and 175. And I have checked that all the callers of these two functions guarantee the parameter obj passed is not null. Signed-off-by: Cong Ding <dinggnu@gmail.com> Acked-by: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-01-28x86, irq: Move irq_remapped out of x86 core codeJoerg Roedel
The irq_remapped function is only used in IOMMU code after the last patch. So move its definition there too. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-01-28x86, io_apic: Introduce eoi_ioapic_pin call-backJoerg Roedel
This callback replaces the old __eoi_ioapic_pin function which needs a special path for interrupt remapping. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-01-28x86, msi: Introduce x86_msi.compose_msi_msg call-backJoerg Roedel
This call-back points to the right function for initializing the msi_msg structure. The old code for msi_msg generation was split up into the irq-remapped and the default case. The irq-remapped case just calls into the specific Intel or AMD implementation when the device is behind an IOMMU. Otherwise the default function is called. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-01-28x86, irq: Introduce setup_remapped_irq()Joerg Roedel
This function does irq-remapping specific interrupt setup like modifying the chip defaults. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-01-28x86, irq: Move irq_remapped() check into free_remapped_irqJoerg Roedel
The function is called unconditionally now in IO-APIC code removing another irq_remapped() check from x86 core code. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-01-28x86, io-apic: Move CONFIG_IRQ_REMAP code out of x86 coreJoerg Roedel
Move all the code to either to the header file asm/irq_remapping.h or to drivers/iommu/. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-01-28x86, irq: Move irq_remapping_enabled declaration to iommu codeJoerg Roedel
Remove the last left-over from this flag from x86 code. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-01-28x86, io_apic: Move irq_remapping_enabled checks out of check_timer()Joerg Roedel
Move these checks to IRQ remapping code by introducing the panic_on_irq_remap() function. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-01-28x86, io_apic: Convert setup_ioapic_entry to function pointerJoerg Roedel
This pointer is changed to a different function when IRQ remapping is enabled. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-01-28x86, io_apic: Introduce set_affinity function pointerJoerg Roedel
With interrupt remapping a special function is used to change the affinity of an IO-APIC interrupt. Abstract this with a function pointer. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-01-28x86, msi: Use IRQ remapping specific setup_msi_irqs routineJoerg Roedel
Use seperate routines to setup MSI IRQs for both irq_remapping_enabled cases. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-01-28x86, hpet: Introduce x86_msi_ops.setup_hpet_msiJoerg Roedel
This function pointer can be overwritten by the IRQ remapping code. The irq_remapping_enabled check can be removed from default_setup_hpet_msi. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-01-28x86, io_apic: Introduce x86_io_apic_ops.print_entries for debuggingJoerg Roedel
This call-back is used to dump IO-APIC entries for debugging purposes into the kernel log. VT-d needs a special routine for this and will overwrite the default. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-01-28x86, io_apic: Introduce x86_io_apic_ops.disable()Joerg Roedel
This function pointer is used to call a system-specific function for disabling the IO-APIC. Currently this is used for IRQ remapping which has its own disable routine. Also introduce the necessary infrastructure in the interrupt remapping code to overwrite this and other function pointers as necessary by interrupt remapping. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2013-01-28x86, apic: Move irq_remapping_enabled checks into IRQ-remapping codeJoerg Roedel
Move the three easy to move checks in the x86' apic.c file into the IRQ-remapping code. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>