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path: root/include/linux/fsl/mc.h
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2021-09-28bus/fsl-mc: Add generic implementation for open/reset/close commandsDiana Craciun
The open/reset/close commands format is similar for all objects. Currently there are multiple implementations for these commands scattered through various drivers. The code is cavsi-identical. Create a generic implementation for the open/reset/close commands. One of the consumer will be the VFIO driver which needs to be able to reset a device. Signed-off-by: Diana Craciun <diana.craciun@oss.nxp.com> Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Link: https://lore.kernel.org/r/20210922110530.24736-1-diana.craciun@oss.nxp.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2021-08-04bus: fsl-mc: extend fsl_mc_get_endpoint() to pass interface IDIoana Ciornei
In case of a switch DPAA2 object, the interface ID is also needed when querying for the object endpoint. Extend fsl_mc_get_endpoint() so that users can also pass the interface ID that are interested in. Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-01-27bus: fsl-mc: move fsl_mc_command struct in a uapi headerIoana Ciornei
Define "struct fsl_mc_command" as a structure that can cross the user/kernel boundary. Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Link: https://lore.kernel.org/r/20210114170752.2927915-2-ciorneiioana@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-02bus/fsl-mc: Extend ICID size from 16bit to 32bitBharat Bhushan
In virtual machines the device-id range is defined between 0x10000-0x20000. The reason for using such a large range is to avoid overlapping with the PCI range. Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com> Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Diana Craciun <diana.craciun@oss.nxp.com> Link: https://lore.kernel.org/r/20200929085441.17448-13-diana.craciun@oss.nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-02bus/fsl-mc: Export IRQ pool handling functions to be used by VFIODiana Craciun
The IRQ pool handling functions can be used by both DPRC driver and VFIO. Adapt and export those functions. Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Diana Craciun <diana.craciun@oss.nxp.com> Link: https://lore.kernel.org/r/20200929085441.17448-12-diana.craciun@oss.nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-02bus/fsl-mc: Add a container setup functionDiana Craciun
Both DPRC driver and VFIO driver use the same initialization code for the DPRC. Introduced a new function which groups this initialization code. The function is exported and may be used by VFIO as well. Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Diana Craciun <diana.craciun@oss.nxp.com> Link: https://lore.kernel.org/r/20200929085441.17448-10-diana.craciun@oss.nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-02bus/fsl-mc: Export a cleanup function for DPRCDiana Craciun
Create and export a cleanup function for DPRC. The function is used by the DPRC driver, but it will be used by the VFIO driver as well. Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Diana Craciun <diana.craciun@oss.nxp.com> Link: https://lore.kernel.org/r/20200929085441.17448-9-diana.craciun@oss.nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-02bus/fsl-mc: Export dprc_scan/dprc_remove functions to be used by multiple ↵Diana Craciun
entities Currently the DPRC scan function is used only by the bus driver. But the same functionality will be needed by the VFIO driver. To support this, the dprc scan function was exported and a little bit adjusted to fit both scenarios. Also the scan mutex initialization is done when the bus object is created, not in dprc_probe in order to be used by both VFIO and bus driver. Similarily dprc_remove_devices is exported to be used by VFIO. Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Diana Craciun <diana.craciun@oss.nxp.com> Link: https://lore.kernel.org/r/20200929085441.17448-8-diana.craciun@oss.nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-02bus/fsl-mc: Add dprc-reset-container supportBharat Bhushan
DPRC reset is required by VFIO-mc in order to stop a device to further generate DMA transactions. Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com> Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Diana Craciun <diana.craciun@oss.nxp.com> Link: https://lore.kernel.org/r/20200929085441.17448-7-diana.craciun@oss.nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-02bus/fsl-mc: Set the QMAN/BMAN region flagsDiana Craciun
The QMAN region is memory mapped, so it should be of type IORESOURCE_MEM. The region flags bits were wrongly used to pass additional information. Use the bus specific bits for this purpose. Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Diana Craciun <diana.craciun@oss.nxp.com> Link: https://lore.kernel.org/r/20200929085441.17448-5-diana.craciun@oss.nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-02bus/fsl-mc: add support for 'driver_override' in the mc-busBharat Bhushan
This patch is required for vfio-fsl-mc meta driver to successfully bind layerscape container devices for device passthrough. This patch adds a mechanism to allow a layerscape device to specify a driver rather than a layerscape driver provide a device match. Example to allow a device (dprc.1) to specifically bind with driver (vfio-fsl-mc):- - echo vfio-fsl-mc > /sys/bus/fsl-mc/devices/dprc.1/driver_override - echo dprc.1 > /sys/bus/fsl-mc/drivers/fsl_mc_dprc/unbind - echo dprc.1 > /sys/bus/fsl-mc/drivers/vfio-fsl-mc/bind Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com> Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Diana Craciun <diana.craciun@oss.nxp.com> Link: https://lore.kernel.org/r/20200929085441.17448-4-diana.craciun@oss.nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-23bus: fsl-mc: use raw spin lock to serialize mc cmdsLaurentiu Tudor
Replace the spinlock that serializes the MC commands with a raw spinlock. This is needed for the RT kernel because there are MC commands sent in interrupt context. Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Link: https://lore.kernel.org/r/20200717154800.17169-3-ioana.ciornei@nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-23bus: fsl-mc: add missing device typesIoana Ciornei
The MC bus has different types of devices that can be discovered on the bus. Add the missing device types. Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Link: https://lore.kernel.org/r/20200717154800.17169-2-ioana.ciornei@nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-30bus: fsl-mc: add api to retrieve mc versionAndrei Botila
Add a new api that returns Management Complex firmware version and make the required structure public. The api's first user will be the caam driver for setting prediction resistance bits. Signed-off-by: Andrei Botila <andrei.botila@nxp.com> Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Reviewed-by: Horia Geantă <horia.geanta@nxp.com> Cc: Chris Healy <cphealy@gmail.com> Cc: Lucas Stach <l.stach@pengutronix.de> Cc: Horia Geantă <horia.geanta@nxp.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Iuliana Prodan <iuliana.prodan@nxp.com> Cc: linux-crypto@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-imx@nxp.com Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2019-10-31bus: fsl-mc: add the fsl_mc_get_endpoint functionIoana Ciornei
Using the newly added fsl_mc_get_endpoint function a fsl-mc driver can find its associated endpoint (another object at the other link of a MC firmware link). The API will be used in the following patch in order to discover the connected DPMAC object of a DPNI. Also, the fsl_mc_device_lookup function is made available to the entire fsl-mc bus driver and not just for the dprc driver. Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-11bus: fsl-mc: automatically add a device_link on fsl_mc_[portal,object]_allocateIoana Ciornei
Allocatable devices can be acquired by drivers on the fsl-mc bus using the fsl_mc_portal_allocate or fsl_mc_object_allocate functions. Add a device link between the consumer device and the supplier device so that proper resource management is achieved. Also, adding a link between these devices ensures that a proper unbind order is respected (ie before the supplier device is unbound from its respective driver all consumer devices will be notified and unbound first). Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Li Yang <leoyang.li@nxp.com>
2018-12-06bus: fsl-mc: explicitly define the fsl_mc_command endiannessIoana Ciornei
Both the header and the command parameters of the fsl_mc_command are 64-bit little-endian words. Use the appropriate type to explicitly specify their endianness. Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-26Merge tag 'iommu-updates-v4.20' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU updates from Joerg Roedel: - Debugfs support for the Intel VT-d driver. When enabled, it now also exposes some of its internal data structures to user-space for debugging purposes. - ARM-SMMU driver now uses the generic deferred flushing and fast-path iova allocation code. This is expected to be a major performance improvement, as this allocation path scales a lot better. - Support for r8a7744 in the Renesas iommu driver - Couple of minor fixes and improvements all over the place * tag 'iommu-updates-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (39 commits) iommu/arm-smmu-v3: Remove unnecessary wrapper function iommu/arm-smmu-v3: Add SPDX header iommu/amd: Add default branch in amd_iommu_capable() dt-bindings: iommu: ipmmu-vmsa: Add r8a7744 support iommu/amd: Move iommu_init_pci() to .init section iommu/arm-smmu: Support non-strict mode iommu/io-pgtable-arm-v7s: Add support for non-strict mode iommu/arm-smmu-v3: Add support for non-strict mode iommu/io-pgtable-arm: Add support for non-strict mode iommu: Add "iommu.strict" command line option iommu/dma: Add support for non-strict mode iommu/arm-smmu: Ensure that page-table updates are visible before TLBI iommu/arm-smmu-v3: Implement flush_iotlb_all hook iommu/arm-smmu-v3: Avoid back-to-back CMD_SYNC operations iommu/arm-smmu-v3: Fix unexpected CMD_SYNC timeout iommu/io-pgtable-arm: Fix race handling in split_blk_unmap() iommu/arm-smmu-v3: Fix a couple of minor comment typos iommu: Fix a typo iommu: Remove .domain_{get,set}_windows iommu: Tidy up window attributes ...
2018-09-25iommu/arm-smmu: Add support for the fsl-mc busNipun Gupta
Implement bus specific support for the fsl-mc bus including registering arm_smmu_ops and bus specific device add operations. Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2018-09-21bus: fsl-mc: add support for dpseci device typeHoria Geantă
Signed-off-by: Horia Geantă <horia.geanta@nxp.com> Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-03-23bus: fsl-mc: change mc_command in fsl_mc_commandIoana Ciornei
The "struct mc_command" is a very generic name for a global kernel structure. Change its name in "struct fsl_mc_command". Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-14staging: fsl-mc: Move DPCON out of stagingBogdan Purcareata
Move the source files out of staging into their final locations: - dpcon.c goes to drivers/bus/fsl-mc/, next to the core infrastructure - dpcon-cmd.h gets merged into drivers/bus/fsl-mc/fsl-mc-private.h, next to the other internally used APIs - dpcon.h gets merged into include/linux/fsl/mc.h, exposing the public API Update references in the dpaa2-eth staging driver. DPCON stands for Data Path Concentrator - an interface between DPIO (Data Path IO) and its users (e.g. dpaa2-eth). You can read more about DPIO in Documentation/networking/dpaa2/overview.rst Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com> Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-14staging: fsl-mc: Move DPBP out of stagingBogdan Purcareata
Move the source files out of staging into their final locations: - dpbp.c goes to drivers/bus/fsl-mc/, next to the core infrastructure - dpbp-cmd.h gets merged into drivers/bus/fsl-mc/fsl-mc-private.h, next to the other internally used APIs - dpbp.h gets merged into include/linux/fsl/mc.h, exposing the public API Update references in the dpaa2-eth staging driver. DPBP stands for Data Path Buffer Pool - you can read more about the object in Documentation/networking/dpaa2/overview.rst Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com> Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-22staging: fsl-mc: Move core bus out of stagingBogdan Purcareata
Move the source files out of staging into their final locations: -mc.h include file in drivers/staging/fsl-mc/include go to include/linux/fsl -source files in drivers/staging/fsl-mc/bus go to drivers/bus/fsl-mc -overview.rst, providing an overview of DPAA2, goes to Documentation/networking/dpaa2/overview.rst Update or delete other remaining staging files -- Makefile, Kconfig, TODO. Update dpaa2_eth and dpio staging drivers. Add integration bits for the documentation build system. Signed-off-by: Stuart Yoder <stuyoder@gmail.com> [rebased, add dpaa2_eth and dpio #include updates] Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> [rebased, split irqchip to separate patch] Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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