On 6/22/2026 8:06 PM, David Marchand wrote: > On Mon, 25 May 2026 at 20:43, Raghavendra Ningoji > <[email protected]> wrote: >> Add the skeleton of a new dmadev poll-mode driver for the AMD AE4DMA >> hardware DMA engine, providing only PCI probe/remove and per-queue >> hardware initialisation. An AE4DMA engine exposes 16 hardware command >> queues, each with a 32-entry descriptor ring; the PMD maps each >> hardware channel to its own dmadev with a single virtual channel, >> so a PCI function appears as 16 dmadevs named "<pci-bdf>-ch0" .. >> "<pci-bdf>-ch15". > I am not familiar with DMA drivers, I am not sure it is something acceptable. > @Chengwen for info.
This is acceptable. For a DMA controller (which may be a PCI device), there may be multiple hardware channels, and each hardware channel is presented as a dmadev device. The device name can be in the format of BDF-chX.
