dma_alloc_coherent example
Hi, I am writing a pcie driver for LS1021a to get data from the pcie card. In driver, memory is allocated by: virt_mem = ,dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t ... As an example of a situation where DMA_ATTR_WRITE_BARRIER would be useful, suppose ...
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 dma_alloc_coherent example 相關參考資料
Linux Kernel Documentation :: DMA-API-HOWTO.txt - mjm wired
For 68 example, if a PCI device has a BAR, the kernel reads the bus address ..... 414 415 dma_alloc_coherent() returns two values: the virtual ... https://www.mjmwired.net dma_alloc_coherent memory with mmap | NXP Community
Hi, I am writing a pcie driver for LS1021a to get data from the pcie card. In driver, memory is allocated by: virt_mem = https://community.nxp.com Mastering the DMA and IOMMU APIs - eLinux.org
dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t ... As an example of a situation where DMA_ATTR_WRITE_BARRIER would be useful, suppose ... https://elinux.org mmap_allocmmap_alloc.c at master · claudioscordinommap_alloc ...
claudioscordino Usage of dma_alloc_coherent 4ba696d on Sep 21, 2012 ... Example of driver that allows a user-space program to mmap a buffer of. https://github.com driver-samplesdog1.c at master · bgmerrelldriver-samples · GitHub
Using dma_alloc_coherent(). *. * Using dma_map_single(). *. * Using a DMA Pool. *. * You can use NULL for the device and/or pci_dev structure arguments. https://github.com 驅動程式中的DMA問題@ Welkin小窩:: 痞客邦::
歷史上的今天. 2012: 常用核心記憶體分配函數; 2012: 核心記憶體; 2012: dma_alloc_coherent. △top. 留言列表(2). 發表留言. #1 jethro · jethro 於2015/08/07 18:16 ... http://welkinchen.pixnet.net lab1_dma.c
Do this in three ways: * * Using dma_alloc_coherent(). * * Using dma_map_single() * * Using a DMA Pool. * * You should use NULL for the device and/or ... http://mercury.pr.erau.edu here - Kernel.org
The flag parameter (dma_alloc_coherent() only) allows the caller to specify the .... As an example of the use of the ``*_attrs`` functions, here's how you could ... https://www.kernel.org DMA API - Kernel.org
For example, if a PCI device has a BAR, the kernel reads the bus address (A) .... This is true of the dma_pool interface as well. dma_alloc_coherent() returns two ... https://www.kernel.org linux中关于dma_alloc_coherent的用法- 强强的专栏- CSDN博客
因为需要用到DMA，所以使用dma_alloc_coherent申请了一块内存，然后使用mmap映射到用户空间。然后，我用千兆网卡(CPSW驱动)进行 ... https://blog.csdn.net |