ikwzm / udmabuf

User space mappable dma buffer device driver for Linux.

ikwzm/udmabuf Issues

Cannot write mmap'ed buffer content to disk using O_DIRECT flag
Updated 21 days ago6
Xilinx Zynqmp: The read data is inconsistent with the data written by the PL
Updated 4 months ago47
name conflict with udmabuf driver in mainline linux
Closed 6 months ago1
udmabuf can't be build on kernel >= 6.6.0
Closed 7 months ago1
Could this be used with V4L2/libcamera buffers on the Raspberry Pi 4 (Arm A72)
Updated 9 months ago6
Do you plan support for versal devices?
Updated 10 months ago1
Using udmabuf on linux zynq7020
Closed 10 months ago3
Once the creation of a device fails, a device with the same name cannot be created.
Closed a year ago
Doubts with DMA coherency mode and quirk-mmap
Closed a year ago5
AXI MCDMA support?
Closed a year ago6
PetaLinux 2023.1 / Yocto Langdale build - no .ko files are installed, thus no package is created
Closed a year ago12
Build failure since kernel v6.3
Closed a year ago1
memory-region
Closed a year ago4
The reserved space is used to expand the CMA space, and the u-dma-buf driver cannot be used normally
Updated a year ago5
Unsupported node format error in Dmesg
Closed a year ago6
In Python test code there is a typo
Closed a year ago3
Cache coherency problem on ARM in u-dma-buf 4.4.0
Closed a year ago
Using "u-dma-buf" on x86 with IOMMU enabled
Updated a year ago4
Unusual issue when mmapping udmabuf for network transfer
Closed a year ago6
> I ran into the same issue on an x86_64 and it was fixed by changing the dma_mask_bit module parameter like so: `insmod udmabuf.ko dma_mask_bit=64 udmabuf0=8388608`
Updated a year ago1
Attempting to allocate a large buffer in the CMA area of reserved_memory fails to allocate pages
Updated a year ago2
Read()/Write() performance
Closed a year ago8
How about using one same device node such as udmabuf0 in two different processes
Closed a year ago2
About the data consistency problem of udmabuf
Closed a year ago2
(Again) memory cache management and coherency
Updated 2 years ago7
Zynq Ultrascale+ (ARM Cortex A-53) Kernel 5.15.19 problem
Updated 2 years ago4
udmabuf at fixed physical address in linux x86
Updated 2 years ago1
dma_alloc_coherent(size=16777216) failed. return(0)
Closed 2 years ago6
x86_64 support ? compile error
Closed 2 years ago1
u-dma-buf_test missing stdlib, unistd and time headers
Closed 2 years ago1
support for microblaze ?
Closed 2 years ago8
kernel 5.10 support
Closed 2 years ago2
udmabuf write issue from firmware/pci
Updated 2 years ago4
include file error. Basic build usage question
Closed 2 years ago9
typo in sync_for_cpu sample in documentation?
Closed 2 years ago3
Allocating multiple DMA buffers but not in a single parse
Updated 3 years ago3
Selected processor does not support 'isb' in ARM mode
Closed 3 years ago2
Strange memory errors
Closed 3 years ago5
Regarding Manual cache management with the CPU cache still being enabled
Updated 3 years ago3
Check for contiguity
Updated 3 years ago4
Update read me for sizes more than 4MiB
Updated 3 years ago1
Zynq u-dma-buf with DMA
Updated 3 years ago5
memory-region property how to use it?
Updated 3 years ago1
petalinux2020.2 do not work with u-dma-buf
Updated 3 years ago2
Setting dma-coherent on devices created through /dev/u-dma-buf-mgr
Updated 3 years ago4
Trying to perform DMA reads
Closed 3 years ago2
delete hang forever
Closed 4 years ago2
info_enable is not followed on module load/unload
Closed 4 years ago3
Delete on abnormal termination.
Closed 4 years ago2
of_reserved_mem_device_init failed. return=-22
Updated 4 years ago3