scottl 2fdb52b864 Mega busdma API commit. ... Add two new arguments to bus_dma_tag_create(): lockfunc and lockfuncarg. Lockfunc allows a driver to provide a function for managing its locking semantics while using busdma. At the moment, this is used for the asynchronous busdma_swi and callback mechanism. Two lockfunc implementations are provided: busdma_lock_mutex() performs standard mutex operations on the mutex that is specified from lockfuncarg. dftl_lock() is a panic implementation and is defaulted to when NULL, NULL are passed to bus_dma_tag_create(). The only time that NULL, NULL should ever be used is when the driver ensures that bus_dmamap_load() will not be deferred. Drivers that do not provide their own locking can pass busdma_lock_mutex,&Giant args in order to preserve the former behaviour. sparc64 and powerpc do not provide real busdma_swi functions, so this is largely a noop on those platforms. The busdma_swi on is64 is not properly locked yet, so warnings will be emitted on this platform when busdma callback deferrals happen. If anyone gets panics or warnings from dflt_lock() being called, please let me know right away. Reviewed by: tmm, gibbs		2003-07-01 15:52:06 +00:00
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aim	- Export pmap_enter_quick() to the MI VM. This will permit the	2003-06-29 21:20:04 +00:00
compile	Don't need the .keep_me files. Obrien and I committed past each other.	2001-07-01 23:35:44 +00:00
conf	Note that scbus is required for SCSI, not just "required" in general.	2003-06-08 02:03:02 +00:00
include	Mega busdma API commit.	2003-07-01 15:52:06 +00:00
ofw	Simplify ofw_pci_fixup(). It doesn't need to be recursive, since the	2003-03-03 12:05:06 +00:00
powermac	Allow the interrupt controller to be probed - this picks up the	2003-06-29 02:05:19 +00:00
powerpc	Mega busdma API commit.	2003-07-01 15:52:06 +00:00
psim	Remove reference to ata resource in print_child.	2003-04-18 02:47:12 +00:00