You might do better by subscribing to hackers@ and posting there. This question is a little more technical than this list usually deals with.
[EMAIL PROTECTED] wrote: > Hi All, > > i have been tweaking the pvr250 driver to support pvr150s/500s. now i > want to remove Giant from the code. > > problem is, i am not sure what to do. i have created a mutex which > replaces the spltty and splx calls. but this crashes my box :-) > > the original code looks like this: > /* > * Allocate a DMA tag for the scatter / gather list. > */ > error = bus_dma_tag_create(sc->parent_dmat, 1, 0, > BUS_SPACE_MAXADDR_32BIT, > BUS_SPACE_MAXADDR, NULL, NULL, > CXM_SG_BUFFERS > * sizeof(struct cxm_sg_entry), 1, > BUS_SPACE_MAXSIZE_32BIT, 0, > #if __FreeBSD_version >= 501102 > busdma_lock_mutex, &Giant, > #endif > &sc->enc_sg.dmat); > > what should it look like? > > and how will i prevent the interrupt routine from interfering with > userland operations? can i place a "mtx_lock()" call in the interrupt > routine? > > is there a howto somewhere? > > regards, > > usleep > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "[EMAIL PROTECTED]" -- Bill Moran Many miles away, something crawls through the slime at the bottom of a dark, Scottish lake. _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
