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path: root/drivers/iommu/fsl_pamu_domain.c (follow)
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* iommu: Streamline registration interfaceRobin Murphy2021-04-161-3/+1
| | | | | | | | | | | Rather than have separate opaque setter functions that are easy to overlook and lead to repetitive boilerplate in drivers, let's pass the relevant initialisation parameters directly to iommu_device_register(). Acked-by: Will Deacon <will@kernel.org> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Link: https://lore.kernel.org/r/ab001b87c533b6f4db71eb90db6f888953986c36.1617285386.git.robin.murphy@arm.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl-pamu: Fix uninitialized variable warningJoerg Roedel2021-04-151-3/+2
| | | | | | | | | | | The variable 'i' in the function update_liodn_stash() is not initialized and only used in a debug printk(). So it has no meaning at all, remove it. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Joerg Roedel <jroedel@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20210415144442.25103-1-joro@8bytes.org
* iommu/fsl_pamu: hardcode the window address and size in pamu_config_ppaaceChristoph Hellwig2021-04-071-8/+2
| | | | | | | | | The win_addr and win_size parameters are always set to 0 and 1 << 36 respectively, so just hard code them. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20210401155256.298656-14-hch@lst.de Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl_pamu: remove the rpn and snoop_id arguments to pamu_config_ppaacChristoph Hellwig2021-04-071-3/+3
| | | | | | | | | These are always wired to fixed values, so don't bother passing them as arguments. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20210401155256.298656-13-hch@lst.de Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl_pamu: remove the snoop_id fieldChristoph Hellwig2021-04-071-3/+2
| | | | | | | | | | The snoop_id is always set to ~(u32)0. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Will Deacon <will@kernel.org> Acked-by: Li Yang <leoyang.li@nxp.com> Link: https://lore.kernel.org/r/20210401155256.298656-12-hch@lst.de Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl_pamu: enable the liodn when attaching a deviceChristoph Hellwig2021-04-071-44/+3
| | | | | | | | | | | | | Instead of a separate call to enable all devices from the list, just enable the liodn once the device is attached to the iommu domain. This also remove the DOMAIN_ATTR_FSL_PAMU_ENABLE iommu_attr. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Will Deacon <will@kernel.org> Acked-by: Li Yang <leoyang.li@nxp.com> Link: https://lore.kernel.org/r/20210401155256.298656-11-hch@lst.de Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl_pamu: merge handle_attach_device into fsl_pamu_attach_deviceChristoph Hellwig2021-04-071-39/+20
| | | | | | | | | | No good reason to split this functionality over two functions. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Will Deacon <will@kernel.org> Acked-by: Li Yang <leoyang.li@nxp.com> Link: https://lore.kernel.org/r/20210401155256.298656-10-hch@lst.de Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl_pamu: merge pamu_set_liodn and map_liodnChristoph Hellwig2021-04-071-48/+17
| | | | | | | | | | | Merge the two fuctions that configure the ppaace into a single coherent function. I somehow doubt we need the two pamu_config_ppaace calls, but keep the existing behavior just to be on the safe side. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Li Yang <leoyang.li@nxp.com> Link: https://lore.kernel.org/r/20210401155256.298656-9-hch@lst.de Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl_pamu: replace DOMAIN_ATTR_FSL_PAMU_STASH with a direct callChristoph Hellwig2021-04-071-13/+3
| | | | | | | | | | | Add a fsl_pamu_configure_l1_stash API that qman_portal can call directly instead of indirecting through the iommu attr API. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Will Deacon <will@kernel.org> Acked-by: Li Yang <leoyang.li@nxp.com> Link: https://lore.kernel.org/r/20210401155256.298656-8-hch@lst.de Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl_pamu: remove ->domain_window_enableChristoph Hellwig2021-04-071-168/+14
| | | | | | | | | | | | | | | The only thing that fsl_pamu_window_enable does for the current caller is to fill in the prot value in the only dma_window structure, and to propagate a few values from the iommu_domain_geometry struture into the dma_window. Remove the dma_window entirely, hardcode the prot value and otherwise use the iommu_domain_geometry structure instead. Remove the now unused ->domain_window_enable iommu method. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Li Yang <leoyang.li@nxp.com> Link: https://lore.kernel.org/r/20210401155256.298656-7-hch@lst.de Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl_pamu: remove support for multiple windowsChristoph Hellwig2021-04-071-227/+48
| | | | | | | | | | | | | | The only domains allocated forces use of a single window. Remove all the code related to multiple window support, as well as the need for qman_portal to force a single window. Remove the now unused DOMAIN_ATTR_WINDOWS iommu_attr. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Will Deacon <will@kernel.org> Acked-by: Li Yang <leoyang.li@nxp.com> Link: https://lore.kernel.org/r/20210401155256.298656-6-hch@lst.de Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl_pamu: merge iommu_alloc_dma_domain into fsl_pamu_domain_allocChristoph Hellwig2021-04-071-24/+10
| | | | | | | | | | Keep the functionality to allocate the domain together. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Will Deacon <will@kernel.org> Acked-by: Li Yang <leoyang.li@nxp.com> Link: https://lore.kernel.org/r/20210401155256.298656-5-hch@lst.de Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl_pamu: remove support for setting DOMAIN_ATTR_GEOMETRYChristoph Hellwig2021-04-071-50/+5
| | | | | | | | | | | | | | The default geometry is the same as the one set by qman_port given that FSL_PAMU depends on having 64-bit physical and thus DMA addresses. Remove the support to update the geometry and remove the now pointless geom_size field. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Will Deacon <will@kernel.org> Acked-by: Li Yang <leoyang.li@nxp.com> Link: https://lore.kernel.org/r/20210401155256.298656-4-hch@lst.de Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl_pamu: remove fsl_pamu_get_domain_attrChristoph Hellwig2021-04-071-30/+0
| | | | | | | | | | | None of the values returned by this function are ever queried. Also remove the DOMAIN_ATTR_FSL_PAMUV1 enum value that is not otherwise used. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Will Deacon <will@kernel.org> Acked-by: Li Yang <leoyang.li@nxp.com> Link: https://lore.kernel.org/r/20210401155256.298656-3-hch@lst.de Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu: remove the unused domain_window_disable methodChristoph Hellwig2021-04-071-48/+0
| | | | | | | | | | domain_window_disable is wired up by fsl_pamu, but never actually called. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Will Deacon <will@kernel.org> Acked-by: Li Yang <leoyang.li@nxp.com> Link: https://lore.kernel.org/r/20210401155256.298656-2-hch@lst.de Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/pamu: Use dev_iommu_priv_get/set()Joerg Roedel2020-06-301-4/+4
| | | | | | | | | Remove the use of dev->archdata.iommu_domain and use the private per-device pointer provided by IOMMU core code instead. Signed-off-by: Joerg Roedel <jroedel@suse.de> Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com> Link: https://lore.kernel.org/r/20200625130836.1916-8-joro@8bytes.org
* iommu/pamu: Convert to probe/release_device() call-backsJoerg Roedel2020-05-051-17/+5
| | | | | | | | | | Convert the PAMU IOMMU driver to use the probe_device() and release_device() call-backs of iommu_ops, so that the iommu core code does the group and sysfs setup. Signed-off-by: Joerg Roedel <jroedel@suse.de> Link: https://lore.kernel.org/r/20200429133712.31431-19-joro@8bytes.org Signed-off-by: Joerg Roedel <jroedel@suse.de>
* treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 266Thomas Gleixner2019-06-051-13/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation 51 franklin street fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 67 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141333.953658117@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
*-. Merge branches 'arm/renesas', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd' ↵Joerg Roedel2018-10-101-61/+58
|\ \ | | | | | | | | | and 'core' into next
| | * iommu: Remove .domain_{get,set}_windowsRobin Murphy2018-09-251-74/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | Since these are trivially handled by the .domain_{get,set}_attr callbacks when relevant, we can streamline struct iommu_ops for everyone. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
| | * iommu: Tidy up window attributesRobin Murphy2018-09-251-0/+20
| |/ |/| | | | | | | | | | | | | | | | | | | The external interface to get/set window attributes is already abstracted behind iommu_domain_{get,set}_attr(), so there's no real reason for the internal interface to be different. Since we only have one window-based driver anyway, clean up the core code by just moving the DOMAIN_ATTR_WINDOWS handling directly into the PAMU driver. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
| * iommu/fsl: Fix spelling mistake pci_endpt_partioning -> pci_endpt_partitioningColin Ian King2018-09-251-3/+3
|/ | | | | | | Trivial fix to spelling mistake in variable name Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
*-. Merge branches 'arm/exynos', 'arm/renesas', 'arm/rockchip', 'arm/omap', ↵Joerg Roedel2017-09-011-6/+22
|\ \ | | | | | | | | | 'arm/mediatek', 'arm/tegra', 'arm/qcom', 'arm/smmu', 'ppc/pamu', 'x86/vt-d', 'x86/amd', 's390' and 'core' into next
| | * iommu/pamu: Fix PAMU boot crashJoerg Roedel2017-08-231-1/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 68a17f0be6fe introduced an initialization order problem, where devices are linked against an iommu which is not yet initialized. Fix it by initializing the iommu-device before the iommu-ops are registered against the bus. Reported-by: Michael Ellerman <mpe@ellerman.id.au> Fixes: 68a17f0be6fe ('iommu/pamu: Add support for generic iommu-device') Signed-off-by: Joerg Roedel <jroedel@suse.de>
| | * iommu/pamu: Add support for generic iommu-deviceJoerg Roedel2017-08-151-1/+4
| |/ |/| | | | | | | | | | | | | This patch adds a global iommu-handle to the pamu driver and initializes it at probe time. Also link devices added to the iommu to this handle. Signed-off-by: Joerg Roedel <jroedel@suse.de>
| * iommu: Convert to using %pOF instead of full_nameRob Herring2017-07-261-6/+4
|/ | | | | | | | | | | | | | | Now that we have a custom printf format specifier, convert users of full_name to use %pOF instead. This is preparation to remove storing of the full path string for each node. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Joerg Roedel <joro@8bytes.org> Cc: Heiko Stuebner <heiko@sntech.de> Cc: iommu@lists.linux-foundation.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-rockchip@lists.infradead.org Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl: Convert to device_group call-backJoerg Roedel2015-10-221-25/+16
| | | | | | | | Convert the fsl pamu driver to make use of the new device_group call-back. Cc: Varun Sethi <Varun.Sethi@freescale.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl: Make use of domain_alloc and domain_freeJoerg Roedel2015-03-311-28/+32
| | | | | | | Implement domain_alloc and domain_free iommu-ops as a replacement for domain_init/domain_destroy. Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl: Various cleanupsEmil Medve2015-02-031-99/+74
| | | | | | | | | | | | | Currently a PAMU driver patch is very likely to receive some checkpatch complaints about the code in the context of the patch. This patch is an attempt to fix most of that and make the driver more readable Also fixed a subset of the sparse and coccinelle reported issues. Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl: Convert to iommu_capable() API functionJoerg Roedel2014-09-251-3/+2
| | | | | Cc: Varun Sethi <Varun.Sethi@freescale.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl: Fix warning resulting from adding PCI device twiceVarun Sethi2014-09-051-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | iommu_group_get_for_dev determines the iommu group for the PCI device and adds the device to the group. In the PAMU driver we were again adding the device to the same group without checking if the device already had an iommu group. This resulted in the following warning. sysfs: cannot create duplicate filename '/devices/ffe200000.pcie/pci0000:00/0000:00:00.0/iommu_group' ------------[ cut here ]------------ WARNING: at fs/sysfs/dir.c:31 Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.17.0-rc3-00002-g7505cea-dirty #126 task: c0000001fe0a0000 ti: c0000001fe044000 task.ti: c0000001fe044000 NIP: c00000000018879c LR: c000000000188798 CTR: c00000000001ea50 REGS: c0000001fe047040 TRAP: 0700 Not tainted (3.17.0-rc3-00002-g7505cea-dirty) MSR: 0000000080029000 <CE,EE,ME> CR: 24ad8e22 XER: 20000000 SOFTE: 1 GPR00: c000000000188798 c0000001fe0472c0 c0000000009a52e0 0000000000000065 GPR04: 0000000000000001 0000000000000000 3a30303a00000000 0000000027000000 GPR08: 2f696f6d00000000 c0000000008d3830 c0000000009b3938 c0000000009bb3d0 GPR12: 0000000028ad8e24 c00000000fff4000 c00000000000205c 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR20: 0000000000000000 0000000000000000 0000000000000000 c0000000008a4c70 GPR24: c0000000007e9010 c0000001fe0140a8 ffffffffffffffef 0000000000000001 GPR28: c0000001fe22ebb8 c0000000007e9010 c00000000090bf10 c0000001fe220000 NIP [c00000000018879c] .sysfs_warn_dup+0x74/0xa4 LR [c000000000188798] .sysfs_warn_dup+0x70/0xa4 Call Trace: [c0000001fe0472c0] [c000000000188798] .sysfs_warn_dup+0x70/0xa4 (unreliable) [c0000001fe047350] [c000000000188d34] .sysfs_do_create_link_sd.clone.2+0x168/0x174 [c0000001fe047400] [c0000000004b3cf8] .iommu_group_add_device+0x78/0x244 [c0000001fe0474b0] [c0000000004b6964] .fsl_pamu_add_device+0x88/0x1a8 [c0000001fe047570] [c0000000004b3960] .iommu_bus_notifier+0xdc/0x15c [c0000001fe047600] [c000000000059848] .notifier_call_chain+0x8c/0xe8 [c0000001fe0476a0] [c000000000059d04] .__blocking_notifier_call_chain+0x58/0x84 [c0000001fe047750] [c00000000036619c] .device_add+0x464/0x5c8 [c0000001fe047820] [c000000000300ebc] .pci_device_add+0x14c/0x17c [c0000001fe0478c0] [c000000000300fbc] .pci_scan_single_device+0xd0/0xf4 [c0000001fe047970] [c00000000030104c] .pci_scan_slot+0x6c/0x18c [c0000001fe047a10] [c00000000030226c] .pci_scan_child_bus+0x40/0x114 [c0000001fe047ac0] [c000000000021974] .pcibios_scan_phb+0x240/0x2c8 [c0000001fe047b70] [c00000000085a970] .pcibios_init+0x64/0xc8 [c0000001fe047c00] [c000000000001884] .do_one_initcall+0xbc/0x224 [c0000001fe047d00] [c000000000852d50] .kernel_init_freeable+0x14c/0x21c [c0000001fe047db0] [c000000000002078] .kernel_init+0x1c/0xfa4 [c0000001fe047e30] [c000000000000884] .ret_from_kernel_thread+0x58/0xd4 Instruction dump: 7c7f1b79 4182001c 7fe4fb78 7f83e378 38a01000 4bffc905 60000000 7c641b78 e87e8008 7fa5eb78 48482ff5 60000000 <0fe00000> 7fe3fb78 4bf7bd39 60000000 Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com> Cc: stable@vger.kernel.org Signed-off-by: Joerg Roedel <jroedel@suse.de>
*---. Merge branches 'x86/vt-d', 'x86/amd', 'arm/omap', 'ppc/pamu', 'arm/smmu', ↵Joerg Roedel2014-07-311-13/+10
|\ \ \ | | | | | | | | | | | | 'arm/exynos' and 'core' into next
| | | * iommu/fsl: Fix the error condition during iommu groupVarun Sethi2014-07-071-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Earlier PTR_ERR was being returned even if group was set to null. Now, we explicitly set an ERR_PTR value in case the group pointer is NULL. Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
| | | * iommu/fsl: Fix the device domain attach condition.Varun Sethi2014-07-071-7/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Store the domain information for the device, only if it's not already attached to a domain. Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
| | | * iommu/fsl: Fix PAMU window size check.Varun Sethi2014-07-071-1/+1
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | is_power_of_2 requires an unsigned long parameter which would lead to truncation of 64 bit values on 32 bit architectures. __ffs also expects an unsigned long parameter thus won't work for 64 bit values on 32 bit architectures. Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com> Tested-by: Emil Medve <Emilian.Medve@Freescale.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
| | * iommu/fsl: Add void declarations in zero-arg functions.Chi Pham2014-07-041-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Added explicit void declarations to zero-argument function headers. The following coccinelle script was used: @addvoid@ identifier f; @@ f( + void ) { ... } Signed-off-by: Chi Pham <fempsci@gmail.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
| | * iommu/fsl_pamu: Remove unnecessary null test before kfreeFabian Frederick2014-07-041-2/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | Fix checkpatch warning: WARNING: kfree(NULL) is safe this check is probably not required Cc: Joerg Roedel <joro@8bytes.org> Cc: Grant Likely <grant.likely@linaro.org> Cc: iommu@lists.linux-foundation.org Cc: devicetree@vger.kernel.org Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* | iommu: Constify struct iommu_opsThierry Reding2014-07-071-1/+1
| | | | | | | | | | | | | | | | This structure is read-only data and should never be modified. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* | iommu/fsl: Use iommu_group_get_for_dev() for IOMMU groupsAlex Williamson2014-07-041-65/+1
|/ | | | | | | | Drop custom code and use IOMMU provided grouping support for PCI. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Acked-by: Varun Sethi <varun.sethi@freescale.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
* iommu/fsl_pamu: Use dev_is_pci() to check whether it is pci deviceYijing Wang2014-01-071-3/+3
| | | | | | | | | Use PCI standard marco dev_is_pci() instead of directly compare pci_bus_type to check whether it is pci device. Signed-off-by: Yijing Wang <wangyijing@huawei.com> Acked-by: Varun Sethi <varun.sethi@freescale.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
* iommu/fsl: Fix whitespace problems noticed by git-amJoerg Roedel2013-08-141-2/+2
| | | | Signed-off-by: Joerg Roedel <joro@8bytes.org>
* iommu/fsl: Freescale PAMU driver and iommu implementation.Varun Sethi2013-08-141-0/+1172
Following is a brief description of the PAMU hardware: PAMU determines what action to take and whether to authorize the action on the basis of the memory address, a Logical IO Device Number (LIODN), and PAACT table (logically) indexed by LIODN and address. Hardware devices which need to access memory must provide an LIODN in addition to the memory address. Peripheral Access Authorization and Control Tables (PAACTs) are the primary data structures used by PAMU. A PAACT is a table of peripheral access authorization and control entries (PAACE).Each PAACE defines the range of I/O bus address space that is accessible by the LIOD and the associated access capabilities. There are two types of PAACTs: primary PAACT (PPAACT) and secondary PAACT (SPAACT).A given physical I/O device may be able to act as one or more independent logical I/O devices (LIODs). Each such logical I/O device is assigned an identifier called logical I/O device number (LIODN). A LIODN is allocated a contiguous portion of the I/O bus address space called the DSA window for performing DSA operations. The DSA window may optionally be divided into multiple sub-windows, each of which may be used to map to a region in system storage space. The first sub-window is referred to as the primary sub-window and the remaining are called secondary sub-windows. This patch provides the PAMU driver (fsl_pamu.c) and the corresponding IOMMU API implementation (fsl_pamu_domain.c). The PAMU hardware driver (fsl_pamu.c) has been derived from the work done by Ashish Kalra and Timur Tabi. [For iommu group support] Acked-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Timur Tabi <timur@tabi.org> Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com> Signed-off-by: Joerg Roedel <joro@8bytes.org>
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