linux-dev/drivers/uio, branch master

uio: dfl: add IOPLL user-clock feature id

2022-09-01T15:00:33Z

Add a Device Feature List (DFL) feature id [1] for the configurable IOPLL user clock source, which can be used to configure the clock speeds that are used for RTL logic that is programmed into the Partial Reconfiguration (PR) region of an FPGA. The IOPLL user-space driver [2] contains frequency tables [3] with the specific user clock frequencies for an implementation. For each desired frequency, the table values are produced by calling the quartus tool, the same tool that generates the IOPLL RTL logic. The quartus tool allows the RTL designer to select different options which can affect the table values. The table-driven, user-space driver allows for supporting future, modified implementations and provides users the ability to modify the IOPLL implementation. [1] https://github.com/OPAE/dfl-feature-id [2] https://github.com/OPAE/opae-sdk/blob/a494f54a9f0356d0425edbff228f0254a4c70303/libraries/plugins/xfpga/usrclk/fpga_user_clk.c [3] https://github.com/OPAE/opae-sdk/blob/a494f54a9f0356d0425edbff228f0254a4c70303/libraries/plugins/xfpga/usrclk/fpga_user_clk_freq.h Acked-by: Xu Yilun Signed-off-by: Russ Weight Signed-off-by: Peter Colberg Link: https://lore.kernel.org/r/20220831204851.4683-1-peter.colberg@intel.com Signed-off-by: Greg Kroah-Hartman

treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_30.RULE (part 2)

2022-06-10T12:51:35Z

Based on the normalized pattern: this program is free software you can redistribute it and/or modify it under the terms of the gnu general public license as published by the free software foundation version 2 this program is distributed as is without any warranty of any kind whether express or implied without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference. Reviewed-by: Allison Randal Signed-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

uio: dfl: add HSSI subsystem feature id

2022-05-09T13:42:57Z

Add the Device Feature List (DFL) feature id for the High Speed Serial Interface (HSSI) Subsystem to the table of ids supported by the uio_dfl driver. The HSSI Subsystem is a configurable set of IP blocks to be used as part of a Ethernet or PCS/FEC/PMA pipeline. Like the Ethernet group used by the N3000 card, the HSSI Subsystem does not fully implement a network device from a Linux netdev perspective and is controlled and monitored from user space software via the uio interface. The Feature ID table of DFL can be found: https://github.com/OPAE/dfl-feature-id Reviewed-by: Tom Rix Acked-by: Xu Yilun Signed-off-by: Matthew Gerlach Signed-off-by: Tianfei Zhang Link: https://lore.kernel.org/r/20220505094129.686535-1-tianfei.zhang@intel.com Signed-off-by: Greg Kroah-Hartman

UIO: use default_groups in kobj_type

2021-12-29T09:54:50Z

There are currently 2 ways to create a set of sysfs files for a kobj_type, through the default_attrs field, and the default_groups field. Move the UIO code to use default_groups field which has been the preferred way since aa30f47cf666 ("kobject: Add support for default attribute groups to kobj_type") so that we can soon get rid of the obsolete default_attrs field. Link: https://lore.kernel.org/r/20211228131319.249324-1-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman

uio: uio_dmem_genirq: Catch the Exception

2021-12-05T13:25:00Z

The return value of dma_set_coherent_mask() is not always 0. To catch the exception in case that dma is not support the mask. Fixes: 0a0c3b5a24bd ("Add new uio device for dynamic memory allocation") Signed-off-by: Jiasheng Jiang Link: https://lore.kernel.org/r/20211204000326.1592687-1-jiasheng@iscas.ac.cn Signed-off-by: Greg Kroah-Hartman

Drivers: hv: vmbus: Mark vmbus ring buffer visible to host in Isolation VM

2021-10-28T11:22:23Z

Mark vmbus ring buffer visible with set_memory_decrypted() when establish gpadl handle. Reviewed-by: Michael Kelley Signed-off-by: Tianyu Lan Link: https://lore.kernel.org/r/20211025122116.264793-5-ltykernel@gmail.com Signed-off-by: Wei Liu

uio: Remove leading spaces in Kconfig

2021-05-21T12:52:37Z

Remove leading spaces before tabs in Kconfig file(s) by running the following command: $ find drivers/uio -name 'Kconfig*' | xargs sed -r -i 's/^[ ]+\t/\t/' Signed-off-by: Juerg Haefliger Link: https://lore.kernel.org/r/20210517095837.81783-1-juergh@canonical.com Signed-off-by: Greg Kroah-Hartman

Merge 50f09a3dd587 ("Merge tag 'char-misc-5.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc") into char-misc-next

2021-05-21T07:48:31Z

We want the char/misc driver fixes in here as well Signed-off-by: Greg Kroah-Hartman

uio: uio_pci_generic: add memory resource mappings

2021-05-14T11:42:11Z

import memory resources from underlying pci device, thus allowing userspace applications to memory map those resources. without this change, current implementation, does not populate the memory maps and are not shown under the corresponding sysfs uio entry: root@apalis-imx8:~# echo "ad00 0122" > \ /sys/bus/pci/drivers/uio_pci_generic/new_id [ 55.736433] uio_pci_generic 0000:01:00.0: enabling device (0000 -> 0002) root@apalis-imx8:~# ls -lsrt /sys/class/uio/uio0/ 0 -rw-r--r-- 1 root root 4096 Apr 27 18:52 uevent 0 -r--r--r-- 1 root root 4096 Apr 27 18:52 version 0 -r--r--r-- 1 root root 4096 Apr 27 18:52 suppliers 0 lrwxrwxrwx 1 root root 0 Apr 27 18:52 subsystem -> ../../../../../../../../../class/uio 0 drwxr-xr-x 2 root root 0 Apr 27 18:52 power 0 -r--r--r-- 1 root root 4096 Apr 27 18:52 name 0 -r--r--r-- 1 root root 4096 Apr 27 18:52 event 0 lrwxrwxrwx 1 root root 0 Apr 27 18:52 device -> ../../../0000:01:00.0 0 -r--r--r-- 1 root root 4096 Apr 27 18:52 dev 0 -r--r--r-- 1 root root 4096 Apr 27 18:52 consumers root@apalis-imx8:~# with the proposed changed, have following instead: root@apalis-imx8:~# ls -lsrt /sys/class/uio/uio0/ 0 -rw-r--r-- 1 root root 4096 Apr 27 19:06 uevent 0 -r--r--r-- 1 root root 4096 Apr 27 19:06 version 0 -r--r--r-- 1 root root 4096 Apr 27 19:06 suppliers 0 lrwxrwxrwx 1 root root 0 Apr 27 19:06 subsystem -> ../../../../../../../../../class/uio 0 drwxr-xr-x 2 root root 0 Apr 27 19:06 power 0 -r--r--r-- 1 root root 4096 Apr 27 19:06 name 0 drwxr-xr-x 4 root root 0 Apr 27 19:06 maps 0 -r--r--r-- 1 root root 4096 Apr 27 19:06 event 0 lrwxrwxrwx 1 root root 0 Apr 27 19:06 device -> ../../../0000:01:00.0 0 -r--r--r-- 1 root root 4096 Apr 27 19:06 dev 0 -r--r--r-- 1 root root 4096 Apr 27 19:06 consumers root@apalis-imx8:~# root@apalis-imx8:~# ls -lsrt /sys/class/uio/uio0/maps/ 0 drwxr-xr-x 2 root root 0 Apr 27 19:07 map1 0 drwxr-xr-x 2 root root 0 Apr 27 19:07 map0 root@apalis-imx8:~# root@apalis-imx8:~# cat /sys/class/uio/uio0/maps/map1/addr 0x0000000062000000 root@apalis-imx8:~# root@apalis-imx8:~# cat /sys/class/uio/uio0/maps/map1/size 0x0000000000200000 root@apalis-imx8:~# tested on AltaData ARINC 429 MiniPCIE module on imx8qm-apalis-ixora-v1.2 Signed-off-by: Firas Ashkar Link: https://lore.kernel.org/r/20210427201046.4005820-1-firas.ashkar@savoirfairelinux.com Signed-off-by: Greg Kroah-Hartman

uio: uio_aec: Use pci_iounmap instead of iounmap

2021-05-14T11:39:47Z

'pci_iomap()' is used in the probe and 'pci_iounmap()' in the error handling path of the probe. So keep things consistent and use 'pci_iounmap()' also in the remove function. Fixes: 1bafeb378e91 ("uio: add the uio_aec driver") Signed-off-by: Christophe JAILLET Link: https://lore.kernel.org/r/f6b2a09a45658e8ef552aa34f0b8615dc1c35838.1620546705.git.christophe.jaillet@wanadoo.fr Signed-off-by: Greg Kroah-Hartman