Hi again, On Sat, Jul 07, 2007 at 03:08:03PM +0200, Arnd Bergmann wrote: > Is this a superset of what the dmaengine API can do? If not, I would > guess that things can get really confusing for the user.
dmatransfer should replace the dmaengine API. dmaengine has only one client (the tcp/ip network stack - just a few lines of code) and provides only one driver (ioatdma). I would have added a ioatdma driver to dmatransfer but unfortunately I don't have the hardware.. > Is it possible to wrap the existing dmaengine code inside of a > dmatransfer implementation? sure - but that wouldn't make much sense. dmaengine gives away exclusive use rights to dma channels. so if dmatransfer is using dmaengine, noone else could use it. > You should probably have the authors of the dmaengine on Cc in > your next version of the driver, if you indend to replace their > code. I'll write them a personal mail to get things rolling as soon as the next dmatransfer release with the cleanups you suggested and scatter/gather as well as fifo support is out. yours, - clifford -- ocaml graphics.cma <( echo 'open Graphics;;open_graph " 640x480"let complex_mul(a,b)(c,d)=(a*.c-.b*.d,a*.d+.b*.c)let complex_add(a,b)(c ,d)=(a+.c,b+.d);;let rec mandel c n=if n>0 then let z=mandel c(n-1) in complex_add(complex_mul z z)c else (0.0,0.0);; for x=0 to 640 do for y=0 to 480 do let c=((float_of_int(x-450))/.200.0,(float_of_int (y-240))/.200.0) in let cabs2(a,b)=(a*.a)+.(b*.b)in if cabs2(mandel c 50)<4.0 then plot x y done done;;read_line()' ) _______________________________________________ Linuxppc-embedded mailing list [email protected] https://ozlabs.org/mailman/listinfo/linuxppc-embedded
