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author | scottl <scottl@FreeBSD.org> | 2003-07-01 15:52:06 +0000 |
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committer | scottl <scottl@FreeBSD.org> | 2003-07-01 15:52:06 +0000 |
commit | 4d495abb9d6f6e6d703264c4133ce1f0c4e7df92 (patch) | |
tree | 1bbd76935b6d5917753df7328c69bd2f3c75f15a /sys/dev/aic7xxx | |
parent | 40bbdc533036dcf851a5b4c44f1b64b82b887a5a (diff) | |
download | FreeBSD-src-4d495abb9d6f6e6d703264c4133ce1f0c4e7df92.zip FreeBSD-src-4d495abb9d6f6e6d703264c4133ce1f0c4e7df92.tar.gz |
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
Diffstat (limited to 'sys/dev/aic7xxx')
-rw-r--r-- | sys/dev/aic7xxx/ahc_eisa.c | 4 | ||||
-rw-r--r-- | sys/dev/aic7xxx/ahc_pci.c | 4 | ||||
-rw-r--r-- | sys/dev/aic7xxx/ahd_pci.c | 4 | ||||
-rw-r--r-- | sys/dev/aic7xxx/aic79xx_osm.h | 2 | ||||
-rw-r--r-- | sys/dev/aic7xxx/aic7xxx_osm.h | 4 |
5 files changed, 12 insertions, 6 deletions
diff --git a/sys/dev/aic7xxx/ahc_eisa.c b/sys/dev/aic7xxx/ahc_eisa.c index 9c5a96e..8e843ec 100644 --- a/sys/dev/aic7xxx/ahc_eisa.c +++ b/sys/dev/aic7xxx/ahc_eisa.c @@ -26,7 +26,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/ahc_eisa.c#11 $ + * $Id: ahc_eisa.c,v 1.29 2003/05/03 23:27:57 gibbs Exp $ * * $FreeBSD$ */ @@ -140,6 +140,8 @@ aic7770_attach(device_t dev) /*nsegments*/AHC_NSEG, /*maxsegsz*/AHC_MAXTRANSFER_SIZE, /*flags*/0, + /*lockfunc*/busdma_lock_mutex, + /*lockarg*/&Giant, &ahc->parent_dmat); if (error != 0) { diff --git a/sys/dev/aic7xxx/ahc_pci.c b/sys/dev/aic7xxx/ahc_pci.c index 24465ed..6d44929 100644 --- a/sys/dev/aic7xxx/ahc_pci.c +++ b/sys/dev/aic7xxx/ahc_pci.c @@ -28,7 +28,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/ahc_pci.c#13 $ + * $Id: ahc_pci.c,v 1.53 2003/05/03 23:27:57 gibbs Exp $ * * $FreeBSD$ */ @@ -120,6 +120,8 @@ ahc_pci_attach(device_t dev) /*nsegments*/AHC_NSEG, /*maxsegsz*/AHC_MAXTRANSFER_SIZE, /*flags*/0, + /*lockfunc*/busdma_lock_mutex, + /*lockarg*/&Giant, &ahc->parent_dmat); if (error != 0) { diff --git a/sys/dev/aic7xxx/ahd_pci.c b/sys/dev/aic7xxx/ahd_pci.c index 2f1c8ed..9f7a1b5 100644 --- a/sys/dev/aic7xxx/ahd_pci.c +++ b/sys/dev/aic7xxx/ahd_pci.c @@ -28,7 +28,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/ahd_pci.c#13 $ + * $Id: ahd_pci.c,v 1.8 2003/05/03 23:27:57 gibbs Exp $ * * $FreeBSD$ */ @@ -123,6 +123,8 @@ ahd_pci_attach(device_t dev) /*nsegments*/AHD_NSEG, /*maxsegsz*/AHD_MAXTRANSFER_SIZE, /*flags*/0, + /*lockfunc*/busdma_lock_mutex, + /*lockarg*/&Giant, &ahd->parent_dmat); if (error != 0) { diff --git a/sys/dev/aic7xxx/aic79xx_osm.h b/sys/dev/aic7xxx/aic79xx_osm.h index 7631958..681c10d 100644 --- a/sys/dev/aic7xxx/aic79xx_osm.h +++ b/sys/dev/aic7xxx/aic79xx_osm.h @@ -109,7 +109,7 @@ typedef union ccb *ahd_io_ctx_t; bus_dma_tag_create(parent_tag, alignment, boundary, \ lowaddr, highaddr, filter, filterarg, \ maxsize, nsegments, maxsegsz, flags, \ - dma_tagp) + busdma_lock_mutex, &Giant, dma_tagp) #define ahd_dma_tag_destroy(ahd, tag) \ bus_dma_tag_destroy(tag) diff --git a/sys/dev/aic7xxx/aic7xxx_osm.h b/sys/dev/aic7xxx/aic7xxx_osm.h index 7faa1a6..952a605 100644 --- a/sys/dev/aic7xxx/aic7xxx_osm.h +++ b/sys/dev/aic7xxx/aic7xxx_osm.h @@ -29,7 +29,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic7xxx_osm.h#15 $ + * $Id: aic7xxx_osm.h,v 1.22 2003/06/10 03:25:24 gibbs Exp $ * * $FreeBSD$ */ @@ -122,7 +122,7 @@ typedef union ccb *ahc_io_ctx_t; bus_dma_tag_create(parent_tag, alignment, boundary, \ lowaddr, highaddr, filter, filterarg, \ maxsize, nsegments, maxsegsz, flags, \ - dma_tagp) + busdma_lock_mutex, &Giant, dma_tagp) #define ahc_dma_tag_destroy(ahc, tag) \ bus_dma_tag_destroy(tag) |