diff options
Diffstat (limited to 'include/mach/mach.defs')
| -rw-r--r-- | include/mach/mach.defs | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/include/mach/mach.defs b/include/mach/mach.defs index a4e23db6..c6ad0770 100644 --- a/include/mach/mach.defs +++ b/include/mach/mach.defs @@ -720,38 +720,5 @@ skip; /* old host_fpa_counters_reset */ #endif /* ! KERNEL_USER */ /* - * This routine is created for allocating DMA buffers. - * We are going to get a contiguous physical memory - * and its physical address in addition to the virtual address. - */ - - /* XXX - This RPC lacks a few additional constraints like boundaries, alignment -and maybe phase. We may not use them now, but they're important for -portability (e.g. if GNU Mach supports PAE, drivers that can't use -physical memory beyond the 4 GiB limit must be able to express it). - -> What do you mean by "phase"? - -Offset from the alignment. But I don't think it's useful at all in this -case. Minimum and maximum addresses and alignment should do. Maybe -boundary crossing but usually, specifying the right alignment and size -is enough. - -Ideally we could make the RPC should return a special -memory object (similar to device_map() ), which can then be mapped into -the process address space with vm_map() like any other memory object. -But we currently do not need it, if we really do we can introduce another RPC. - -FIXME: use phys_address_t - */ -routine vm_allocate_contiguous( - host_priv : host_priv_t; - target_task : vm_task_t; - out vaddr : vm_address_t; - out paddr : vm_address_t; - size : vm_size_t); - -/* * There is no more room in this interface for additional calls. */ |