static int
isa_dma_allochdl(dev_info_t *dip, dev_info_t *rdip, ddi_dma_attr_t *dma_attr,
int (*waitfp)(caddr_t), caddr_t arg, ddi_dma_handle_t *handlep)
{
ddi_dma_attr_merge(dma_attr, &ISA_dma_attr);
return (ddi_dma_allochdl(dip, rdip, dma_attr, waitfp, arg, handlep));
}
/*
* nx1394_dma_allochdl()
* Merges the ddi_dma_attr_t passed in by the target (using
* ddi_dma_alloc_handle() call) with that of the hal and passes the alloc
* handle request up the device by calling ddi_dma_allochdl().
*/
static int
nx1394_dma_allochdl(dev_info_t *dip, dev_info_t *rdip, ddi_dma_attr_t *attr,
int (*waitfnp)(caddr_t), caddr_t arg, ddi_dma_handle_t *handlep)
{
s1394_hal_t *hal;
ddi_dma_attr_t *hal_attr;
int status;
_NOTE(SCHEME_PROTECTS_DATA("unique (per thread)", ddi_dma_attr_t))
TNF_PROBE_0_DEBUG(nx1394_dma_allochdl_enter, S1394_TNF_SL_NEXUS_STACK,
"");
/*
* If hal calls ddi_dma_alloc_handle, dip == rdip == hal dip.
* Unfortunately, we cannot verify this (by way of looking up for hal
* dip) here because h1394_attach() may happen much later.
*/
if (dip != rdip) {
hal = s1394_dip_to_hal(ddi_get_parent(rdip));
ASSERT(hal);
hal_attr = &hal->halinfo.dma_attr;
ASSERT(hal_attr);
ddi_dma_attr_merge(attr, hal_attr);
}
status = ddi_dma_allochdl(dip, rdip, attr, waitfnp, arg, handlep);
TNF_PROBE_1_DEBUG(nx1394_dma_allochdl_exit, S1394_TNF_SL_NEXUS_STACK,
"", tnf_int, status, status);
return (status);
}
