Scott Long f6b1c44d1f 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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amr_cam.c	Merge common XPT_CALC_GEOMETRY functions into a single convenience function.	2003-06-14 22:17:41 +00:00
amr_compat.h	Centralize the devstat handling for all GEOM disk device drivers	2003-03-08 08:01:31 +00:00
amr_disk.c	Use bioq_flush() to drain a bio queue with a specific error code.	2003-04-01 15:06:26 +00:00
amr_pci.c	Mega busdma API commit.	2003-07-01 15:52:06 +00:00
amr_tables.h	amr.c,	2002-10-30 22:00:11 +00:00
amr.c	Use bioq_flush() to drain a bio queue with a specific error code.	2003-04-01 15:06:26 +00:00
amrio.h	amr.c,	2002-10-30 22:00:11 +00:00
amrreg.h	amr.c,	2002-10-30 22:00:11 +00:00
amrvar.h	Use bioq_flush() to drain a bio queue with a specific error code.	2003-04-01 15:06:26 +00:00