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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aicasm	Allow constants to be complex expressions so long as those	2003-01-20 18:02:11 +00:00
ahc_eisa.c	Mega busdma API commit.	2003-07-01 15:52:06 +00:00
ahc_pci.c	Mega busdma API commit.	2003-07-01 15:52:06 +00:00
ahd_pci.c	Mega busdma API commit.	2003-07-01 15:52:06 +00:00
aic7xxx_93cx6.c	Update Perforce Ids.	2002-08-31 06:45:28 +00:00
aic7xxx_93cx6.h	Update Perforce Ids.	2002-08-31 06:45:28 +00:00
aic7xxx_inline.h	Correct/Simplify ignore wide residue message handling	2003-05-26 21:24:01 +00:00
aic7xxx_osm.c	Merge common XPT_CALC_GEOMETRY functions into a single convenience function.	2003-06-14 22:17:41 +00:00
aic7xxx_osm.h	Mega busdma API commit.	2003-07-01 15:52:06 +00:00
aic7xxx_pci.c	Clear stale PCI errors during our test for	2003-06-06 23:52:34 +00:00
aic7xxx.c	When single stepping, only leave ENBUSFREE enabled	2003-06-06 23:53:39 +00:00
aic7xxx.h	aic7770.c:	2003-06-06 23:48:19 +00:00
aic7xxx.reg	Correct/Simplify ignore wide residue message handling	2003-05-26 21:24:01 +00:00
aic7xxx.seq	FIFOEMP can lag LAST_SEG_DONE in the Ultra2 and U160	2003-05-26 21:24:55 +00:00
aic79xx_inline.h	Implement ahd_inq_scbram() and change the implemention	2003-06-28 04:43:19 +00:00
aic79xx_osm.c	Merge common XPT_CALC_GEOMETRY functions into a single convenience function.	2003-06-14 22:17:41 +00:00
aic79xx_osm.h	Mega busdma API commit.	2003-07-01 15:52:06 +00:00
aic79xx_pci.c	aic79xx.h:	2003-06-28 04:39:49 +00:00
aic79xx.c	Fix a race condition in the flushing of commands that	2003-06-28 04:46:54 +00:00
aic79xx.h	aic79xx.h:	2003-06-28 04:45:25 +00:00
aic79xx.reg	Sync perforce IDs.	2003-06-10 03:25:24 +00:00
aic79xx.seq	Use clr instead of an explicit mov from ALLZEROS	2003-06-28 04:44:10 +00:00
aic7770.c	aic7770.c:	2003-06-06 23:48:19 +00:00