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path: root/drivers/bus/fsl-mc/fsl-mc-private.h
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2021-09-28bus/fsl-mc: Add generic implementation for open/reset/close commandsDiana Craciun1-4/+35
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>
2021-01-27bus: fsl-mc: add autorescan sysfsIoana Ciornei1-0/+5
Add the autorescan sysfs in order to enable/disable the DPRC IRQs on which automatic rescan of the bus is performed. This is important when dynamic creation of objects is needed to happen in a timely manner because object creation can be bundled together. Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Link: https://lore.kernel.org/r/20210114170752.2927915-6-ciorneiioana@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-27bus: fsl-mc: add bus rescan attributeIoana Ciornei1-0/+3
Introduce the rescan attribute as a bus attribute to synchronize the fsl-mc bus objects and the MC firmware. To rescan the fsl-mc bus, e.g., echo 1 > /sys/bus/fsl-mc/rescan Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Link: https://lore.kernel.org/r/20210114170752.2927915-5-ciorneiioana@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-27bus: fsl-mc: add fsl-mc userspace supportIoana Ciornei1-0/+39
Adding userspace support for the MC (Management Complex) means exporting an ioctl capable device file representing the root resource container. This new functionality in the fsl-mc bus driver intends to provide userspace applications an interface to interact with the MC firmware. Commands that are composed in userspace are sent to the MC firmware through the FSL_MC_SEND_MC_COMMAND ioctl. By default the implicit MC I/O portal is used for this operation, but if the implicit one is busy, a dynamic portal is allocated and then freed upon execution. The command received through the ioctl interface is checked against a known whitelist of accepted MC commands. Commands that attempt a change in hardware configuration will need CAP_NET_ADMIN, while commands used in debugging do not need it. Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Link: https://lore.kernel.org/r/20210114170752.2927915-4-ciorneiioana@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-27bus: fsl-mc: export mc_cmd_hdr_read_cmdid() to the fsl-mc busIoana Ciornei1-0/+2
Export the mc_cmd_hdr_read_cmdid() function to the entire fsl-mc bus since it will be needed in the following patch. Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Link: https://lore.kernel.org/r/20210114170752.2927915-3-ciorneiioana@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-12-09bus: fsl-mc: added missing fields to dprc_rsp_get_obj_region structureLaurentiu Tudor1-2/+3
'type' and 'flags' fields were missing from dprc_rsp_get_obj_region structure therefore the MC Bus driver was not receiving proper flags from MC like DPRC_REGION_CACHEABLE. Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: Cristian Sovaiala <cristian.sovaiala@freescale.com> Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Link: https://lore.kernel.org/r/20201124111200.1391-1-laurentiu.tudor@nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-02bus/fsl-mc: Add a new version for dprc_get_obj_region commandDiana Craciun1-0/+3
The region size reported by the firmware for mc and software portals was less than allocated by the hardware. This may be problematic when mmapping the region in user space because the region size is less than page size. However the size as reserved by the hardware is 64K. 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/20200929085441.17448-14-diana.craciun@oss.nxp.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-10-02bus/fsl-mc: Extend ICID size from 16bit to 32bitBharat Bhushan1-3/+2
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 Craciun1-10/+0
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 dprc-reset-container supportBharat Bhushan1-0/+7
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 Craciun1-6/+0
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>
2020-07-28bus/fsl-mc: Refactor the MSI domain creation in the DPRC driverDiana Craciun1-2/+4
The DPRC driver is not taking into account the msi-map property and assumes that the icid is the same as the stream ID. Although this assumption is correct, generalize the code to include a translation between icid and streamID. Furthermore do not just copy the MSI domain from parent (for child containers), but use the information provided by the msi-map property. If the msi-map property is missing from the device tree retain the old behaviour for backward compatibility ie the child DPRC objects inherit the MSI domain from the parent. Signed-off-by: Diana Craciun <diana.craciun@oss.nxp.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20200619082013.13661-12-lorenzo.pieralisi@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2019-10-31bus: fsl-mc: add the fsl_mc_get_endpoint functionIoana Ciornei1-0/+42
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>
2019-05-20bus: mc-bus: Add support for mapping shareable portalsRoy Pledge1-2/+15
Starting with v5 of NXP QBMan devices the hardware supports using regular cacheable/shareable memory as the backing store for the portals. This patch adds support for the new portal mode by switching to use the DPRC get object region v2 command which returns both a base address and offset for the portal memory. The new portal region is identified as shareable through the addition of a new flag. Signed-off-by: Roy Pledge <roy.pledge@nxp.com> Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Li Yang <leoyang.li@nxp.com>
2018-03-23bus: fsl-mc: add fsl_mc_allocator cleanup functionIoana Ciornei1-0/+2
The userspace support for fsl-mc requires a fsl_mc_allocator cleanup function. Add the needed function. 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 Purcareata1-0/+48
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 Purcareata1-0/+39
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 Purcareata1-0/+475
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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