Hi I have seen documents in which DMA is working on the physical addresses. In that The DMA controller is actually using physical address to access the FIFOs. In a recent discussion a question came up that when we implement a driver for DMA whether this will work on physical address or virtual address. In the discussion the term DMA Channel virtualization also came up. Does this have anything to do with Virtual addressing as such. or DMA does not use virtual addressing at all.
Related Questions in DRIVER
- How to setup SLI on two GTX 560Ti's
- How can I set an uncommon screen resolution on GNU/Linux with an Arc 380 GPU and X11?
- Bluetooth Driver file corrupt or replaced
- Simba Driver Upgrade on Windows
- OpcUA The user identity token is not valid
- RPi Linux Audio driver for 8 channels Codec
- ORA-61754: Using JSON type collections on Oracle Database release 23c or later requires a SODA driver for Oracle Database release 23c or later
- create_ap wlan0: Could not connect to kernel driver
- How to fix Linux CMA on x86 with internal graphic card i915/hda_intel ioremap error?
- How to enable Swap APO in SYSVAD sample driver without enhancement tab in windows 11?
- RT linux isr routine
- I sent a bundle of data by using bulkTransfer, but received data in pieces
- Trying to do sudo make for linux driver
- Erreur "java.lang.ClassNotFoundException: org.postgresql.Driver"
- In Windows 10/11 is there a way to script a device to use a specific driver, even if its not marked as compatible?
Related Questions in LINUX-DEVICE-DRIVER
- Linux support for parallel Pixel data Image sensor
- Linux to QNX USB driver convert
- IRQ interrupt obtaining abnormal possibilities
- Error compiling dts (Device Tree source) file for dtb
- How to write the external interrupt callback function of Linux kernel v3.10?
- Does traffic control (tc) command have a rate limit?
- The module first installed the alarm when it started
- How does the Linux kernel now what to put in platform_data?
- How to reduce cached memory used by Linux kernel on embedded linux platform
- Notifying Linux MMC subsystem about power loss
- Linux kernel 6.6 from block_device how to find out if it has mounted file system
- Linux SPI read and write may occasionally be slow?
- gettimeofday calculates the runtime, with occasional significant deviations?
- uImage is not supported in kexec_file
- Linux of_platform_depopulate() does not remove drivers
Related Questions in DMA
- STM32 ADC DMA low raw/Voltage readings
- the end of the I/O operation is notified to the system by an interrupt.how much system time do the mentioned operations occupy?
- Use Nvidia as DMA devices is possible?
- Does the Direct Memory Access (DMA) interfere with the execution of user program execution?
- A breakpoint instruction (__debugbreak() statement or a similar call) was executed in p.exe
- How to use DMAMUX generated events to trigger another DMA request?
- How to use DMA memory to memory in stm32h723zgt6?
- Cache issue when creating shared memory between kernel space and user space
- DMA buf import into Vulkan
- stm32 cubeIDE DMA DAC noise on DAC output
- STM32F4 Serial Port Forwarding Architecture
- STM32 ADC: Continuous conversion (DMA) vs. discontinuous conversion accuracy
- AMD IOMMU IO_PAGE_FAULT
- T-Display-S3-long FreeRTOS Memory allocation fails while there is heap space available
- Arduino Pro Portenta H7 I2S and DMA
Related Questions in MMU
- Converting virtual address to real address - in hexadecimal
- What are the differences between VMID and ASID in the context of virtualization and operating systems?
- If multi-core CPUs share the MMU, can multiple processes run in parallel?
- Address translation from supervisor to user mode in RiscV
- Why does it take so long for cpu to write memory after it has obtained the physical address?
- What is (special in) the elf format for static-pie? And what preforms the fixups to the GOT?
- Is it possible to disable completely the MMU/MPU and read/write in completely arbitrary memory regions?
- fb_deferred_io callback is never called in framebuffer driver on Raspberry Pi Zero V1.1
- How are memory addresses translated in QEMU
- Can two pages have the same physical address + offset?
- How do memory controllers allocate a page?
- Does TTBR1 changes after linux kernel init (ARMv8-A)?
- What is the Armv8 VMMU address range limit for 4K pages
- Unable to access any addresses after enabling MMU in QEMU on arm64
- Understanding AArch64 Translation Tables
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Many devices these days come with iommu. This allows the paltform to create a virtual address space for the peripheral bus. This can be used for virtalization and is also useful for DMA when copying a large set of scattered memory pages without supporting scatter gather.