EX_BOUNDZERO, to extent_alloc(). this fixes problems with it
(extent_alloc()) returning incorrect values, when the start of
the extent is not aligned as strongly as the requested area..
raw access to ide disks now works.
<vm/pglist.h> -> <uvm/uvm_pglist.h>
<vm/vm_inherit.h> -> <uvm/uvm_inherit.h>
<vm/vm_kern.h> -> into <uvm/uvm_extern.h>
<vm/vm_object.h> -> nothing
<vm/vm_pager.h> -> into <uvm/uvm_pager.h>
also includes a bunch of <vm/vm_page.h> include removals (due to redudancy
with <vm/vm.h>), and a scattering of other similar headers.
just one copy of this.
- remove duplicate setting of sgsize in iommu_dvmamap_load().
- fix DIAGNOSTIC check in iommu_dvmamap_load_raw() to panic() in unexpected
conditions only (not normal ones), and also add an extra case.
- make some debugging messages in iommu_remove() saner and add some more.
- decrement 'len' in the no streaming buffer case, also.
- in iommu_dvmamem_map(), do not enter these mappings into the IOMMU,
only into the CPU (the former is done at _load time).
- make a panic that shouldn't happen a DIAGNOSTIC.
- merge IOMMU DVMA code from sbus/psycho into iommu.c. this code was
identical and a few minor inconsistencies had crept in. this way
keeps them all in sync.
- with this code gone from psycho, merge the psycho.c and psycho_bus.c
files. same with ebus/ebus_bus.c. delete the _bus.c files.
- add a _ds_boundary member to the dma segment structure, so that later
dma mappings can find this value.
- set _ds_boundary in machdep.c:_bus_dmamem_alloc().
- kill much dead code.
eeh