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Don't provide a mutex in the S/G list dma tag since it will never be defered.

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Fix some nearby style.
This commit is contained in:
Scott Long 2003-08-09 23:07:21 +00:00
parent fda5b6124b
commit fc3e87b367
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=118707
1 changed files with 9 additions and 7 deletions
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16
sys/dev/mlx/mlx.c
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@ -242,15 +242,14 @@ mlx_sglist_map(struct mlx_softc *sc)
}
segsize = sizeof(struct mlx_sgentry) * MLX_NSEG * ncmd;
error = bus_dma_tag_create(sc->mlx_parent_dmat, /* parent */
1, 0, /* alignment, boundary */
1, 0, /* alignment,boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
segsize, 1, /* maxsize, nsegments */
BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
0, /* flags */
busdma_lock_mutex, /* lockfunc */
&Giant, /* lockarg */
NULL, NULL, /* lockfunc, lockarg */
&sc->mlx_sg_dmat);
if (error != 0) {
device_printf(sc->mlx_dev, "can't allocate scatter/gather DMA tag\n");
@ -262,15 +261,18 @@ mlx_sglist_map(struct mlx_softc *sc)
* controller-visible space.
*
* XXX this assumes we can get enough space for all the s/g maps in one
* contiguous slab. We may need to switch to a more complex arrangement where
* we allocate in smaller chunks and keep a lookup table from slot to bus address.
* contiguous slab. We may need to switch to a more complex arrangement
* where we allocate in smaller chunks and keep a lookup table from slot
* to bus address.
*/
error = bus_dmamem_alloc(sc->mlx_sg_dmat, (void **)&sc->mlx_sgtable, BUS_DMA_NOWAIT, &sc->mlx_sg_dmamap);
error = bus_dmamem_alloc(sc->mlx_sg_dmat, (void **)&sc->mlx_sgtable,
BUS_DMA_NOWAIT, &sc->mlx_sg_dmamap);
if (error) {
device_printf(sc->mlx_dev, "can't allocate s/g table\n");
return(ENOMEM);
}
bus_dmamap_load(sc->mlx_sg_dmat, sc->mlx_sg_dmamap, sc->mlx_sgtable, segsize, mlx_dma_map_sg, sc, 0);
bus_dmamap_load(sc->mlx_sg_dmat, sc->mlx_sg_dmamap, sc->mlx_sgtable,
segsize, mlx_dma_map_sg, sc, 0);
return(0);
}