On Thu, Jun 06, 2019 at 02:52:23PM +0530, Abhishek Sahu wrote: > * v2: > > 1. Make the pci device link helper function generic which can be > used for other multi-function PCI devices also. > 2. Minor changes in comments and commit logs. > > * v1: > > NVIDIA Turing GPU [1] has hardware support for USB Type-C and > VirtualLink [2]. The Turing GPU is a multi-function PCI device > which has the following four functions: > > - VGA display controller (Function 0) > - Audio controller (Function 1) > - USB xHCI Host controller (Function 2) > - USB Type-C USCI controller (Function 3) > > Currently NVIDIA and Nouveau GPU drivers only manage function 0. > Rest of the functions are managed by other drivers. These functions > internally in the hardware are tightly coupled. When function 0 goes > in runtime suspended state, then it will do power gating for most of > the hardware blocks. Some of these hardware blocks are used by > the other PCI functions, which leads to functional failure. In the > mainline kernel, the device link is present between > function 0 and function 1. This patch series deals with creating > a similar kind of device link between function 0 and > functions 2 and 3. > > [1] https://www.nvidia.com/content/dam/en-zz/Solutions/design-visualization/technologies/turing-architecture/NVIDIA-Turing-Architecture-Whitepaper.pdf > [2] https://en.wikipedia.org/wiki/VirtualLink > > Abhishek Sahu (2): > PCI: Code reorganization for creating device link > PCI: Create device link for NVIDIA GPU Applied to pci/misc for v5.3, thanks!
