[lkml]   [2010]   [Aug]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Driver: PCIe: 'pci_map_sg' returning invalid bus address?
Thanks guys. I had to get this working quickly so I just stuck with my 
bounce buffer code. I'm not sure that it's technically a 'bounce
buffer'; it just so happens that 'pci_alloc_consistent' returns an
address in the low 32 bits. This may stop working if the user installs
more than 4Gig of memory but I can live with that for now. Performance
isn't great (~110Mbytes/s on 4-channel PCIe) but it's good enough.

It's disappointing that LDD didn't have anything to say about this; it's
pretty fundamental to DMA on x86_32 and PAE.

Thanks -


 \ /
  Last update: 2010-08-14 17:29    [W:0.086 / U:0.796 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site