On Fri, May 29, 2015 at 07:10:53PM +0200, Daniel Vetter wrote: > On Fri, May 29, 2015 at 01:59:01PM +0300, Ville Syrjälä wrote: > > On Fri, May 29, 2015 at 04:06:53PM +0530, Gaurav K Singh wrote: > > > Allocate gem memory for MIPI DBI command buffer. This memory > > > will be used when sending command via DBI interface. > > > > Why would you allocate this via gem? AFAICS you only feed the bus > > address to the hardware. Using the dma-api would seem like the right > > choice here, but I'm not sure how to deal with the dma mask. > > Yeah dma_alloc_coherent is what you want here. The mask can be ignored, > it should be suitable already. Umm, this thing seems to limited to 32bit addresses. And we set the mask to 39 or 40 bits depending on the gen. -- Ville Syrjälä Intel OTC _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
