[SCSI] remove dma_mask hacks
pci_alloc_consistent is under 4G by default. Also simplify the
definition of bus_dmamap_t.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c
index 37fda70..717401b 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
@@ -949,37 +949,11 @@
ahc_dmamem_alloc(struct ahc_softc *ahc, bus_dma_tag_t dmat, void** vaddr,
int flags, bus_dmamap_t *mapp)
{
- bus_dmamap_t map;
-
- map = malloc(sizeof(*map), M_DEVBUF, M_NOWAIT);
- if (map == NULL)
- return (ENOMEM);
- /*
- * Although we can dma data above 4GB, our
- * "consistent" memory is below 4GB for
- * space efficiency reasons (only need a 4byte
- * address). For this reason, we have to reset
- * our dma mask when doing allocations.
- */
- if (ahc->dev_softc != NULL)
- if (pci_set_dma_mask(ahc->dev_softc, 0xFFFFFFFF)) {
- printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
- kfree(map);
- return (ENODEV);
- }
*vaddr = pci_alloc_consistent(ahc->dev_softc,
- dmat->maxsize, &map->bus_addr);
- if (ahc->dev_softc != NULL)
- if (pci_set_dma_mask(ahc->dev_softc,
- ahc->platform_data->hw_dma_mask)) {
- printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
- kfree(map);
- return (ENODEV);
- }
+ dmat->maxsize, mapp);
if (*vaddr == NULL)
- return (ENOMEM);
- *mapp = map;
- return(0);
+ return ENOMEM;
+ return 0;
}
void
@@ -987,7 +961,7 @@
void* vaddr, bus_dmamap_t map)
{
pci_free_consistent(ahc->dev_softc, dmat->maxsize,
- vaddr, map->bus_addr);
+ vaddr, map);
}
int
@@ -1001,7 +975,7 @@
*/
bus_dma_segment_t stack_sg;
- stack_sg.ds_addr = map->bus_addr;
+ stack_sg.ds_addr = map;
stack_sg.ds_len = dmat->maxsize;
cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0);
return (0);
@@ -1010,12 +984,6 @@
void
ahc_dmamap_destroy(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map)
{
- /*
- * The map may is NULL in our < 2.3.X implementation.
- * Now it's 2.6.5, but just in case...
- */
- BUG_ON(map == NULL);
- free(map, M_DEVBUF);
}
int
@@ -1382,7 +1350,6 @@
TAILQ_INIT(&ahc->platform_data->completeq);
TAILQ_INIT(&ahc->platform_data->device_runq);
ahc->platform_data->irq = AHC_LINUX_NOIRQ;
- ahc->platform_data->hw_dma_mask = 0xFFFFFFFF;
ahc_lockinit(ahc);
init_timer(&ahc->platform_data->completeq_timer);
ahc->platform_data->completeq_timer.data = (u_long)ahc;