summaryrefslogtreecommitdiffstats
path: root/arch/sparc/mm/iommu.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc/mm/iommu.c')
-rw-r--r--arch/sparc/mm/iommu.c71
1 files changed, 23 insertions, 48 deletions
diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c
index 07fc6a65d9b..a8a58cad9d2 100644
--- a/arch/sparc/mm/iommu.c
+++ b/arch/sparc/mm/iommu.c
@@ -39,8 +39,6 @@
/* srmmu.c */
extern int viking_mxcc_present;
-BTFIXUPDEF_CALL(void, flush_page_for_dma, unsigned long)
-#define flush_page_for_dma(page) BTFIXUP_CALL(flush_page_for_dma)(page)
extern int flush_page_for_dma_global;
static int viking_flush;
/* viking.S */
@@ -143,7 +141,6 @@ static int __init iommu_init(void)
subsys_initcall(iommu_init);
-/* This begs to be btfixup-ed by srmmu. */
/* Flush the iotlb entries to ram. */
/* This could be better if we didn't have to flush whole pages. */
static void iommu_flush_iotlb(iopte_t *iopte, unsigned int niopte)
@@ -216,11 +213,6 @@ static u32 iommu_get_scsi_one(struct device *dev, char *vaddr, unsigned int len)
return busa + off;
}
-static __u32 iommu_get_scsi_one_noflush(struct device *dev, char *vaddr, unsigned long len)
-{
- return iommu_get_scsi_one(dev, vaddr, len);
-}
-
static __u32 iommu_get_scsi_one_gflush(struct device *dev, char *vaddr, unsigned long len)
{
flush_page_for_dma(0);
@@ -238,19 +230,6 @@ static __u32 iommu_get_scsi_one_pflush(struct device *dev, char *vaddr, unsigned
return iommu_get_scsi_one(dev, vaddr, len);
}
-static void iommu_get_scsi_sgl_noflush(struct device *dev, struct scatterlist *sg, int sz)
-{
- int n;
-
- while (sz != 0) {
- --sz;
- n = (sg->length + sg->offset + PAGE_SIZE-1) >> PAGE_SHIFT;
- sg->dma_address = iommu_get_one(dev, sg_page(sg), n) + sg->offset;
- sg->dma_length = sg->length;
- sg = sg_next(sg);
- }
-}
-
static void iommu_get_scsi_sgl_gflush(struct device *dev, struct scatterlist *sg, int sz)
{
int n;
@@ -426,40 +405,36 @@ static void iommu_unmap_dma_area(struct device *dev, unsigned long busa, int len
}
#endif
-static char *iommu_lockarea(char *vaddr, unsigned long len)
-{
- return vaddr;
-}
+static const struct sparc32_dma_ops iommu_dma_gflush_ops = {
+ .get_scsi_one = iommu_get_scsi_one_gflush,
+ .get_scsi_sgl = iommu_get_scsi_sgl_gflush,
+ .release_scsi_one = iommu_release_scsi_one,
+ .release_scsi_sgl = iommu_release_scsi_sgl,
+#ifdef CONFIG_SBUS
+ .map_dma_area = iommu_map_dma_area,
+ .unmap_dma_area = iommu_unmap_dma_area,
+#endif
+};
-static void iommu_unlockarea(char *vaddr, unsigned long len)
-{
-}
+static const struct sparc32_dma_ops iommu_dma_pflush_ops = {
+ .get_scsi_one = iommu_get_scsi_one_pflush,
+ .get_scsi_sgl = iommu_get_scsi_sgl_pflush,
+ .release_scsi_one = iommu_release_scsi_one,
+ .release_scsi_sgl = iommu_release_scsi_sgl,
+#ifdef CONFIG_SBUS
+ .map_dma_area = iommu_map_dma_area,
+ .unmap_dma_area = iommu_unmap_dma_area,
+#endif
+};
void __init ld_mmu_iommu(void)
{
- viking_flush = (BTFIXUPVAL_CALL(flush_page_for_dma) == (unsigned long)viking_flush_page);
- BTFIXUPSET_CALL(mmu_lockarea, iommu_lockarea, BTFIXUPCALL_RETO0);
- BTFIXUPSET_CALL(mmu_unlockarea, iommu_unlockarea, BTFIXUPCALL_NOP);
-
- if (!BTFIXUPVAL_CALL(flush_page_for_dma)) {
- /* IO coherent chip */
- BTFIXUPSET_CALL(mmu_get_scsi_one, iommu_get_scsi_one_noflush, BTFIXUPCALL_RETO0);
- BTFIXUPSET_CALL(mmu_get_scsi_sgl, iommu_get_scsi_sgl_noflush, BTFIXUPCALL_NORM);
- } else if (flush_page_for_dma_global) {
+ if (flush_page_for_dma_global) {
/* flush_page_for_dma flushes everything, no matter of what page is it */
- BTFIXUPSET_CALL(mmu_get_scsi_one, iommu_get_scsi_one_gflush, BTFIXUPCALL_NORM);
- BTFIXUPSET_CALL(mmu_get_scsi_sgl, iommu_get_scsi_sgl_gflush, BTFIXUPCALL_NORM);
+ sparc32_dma_ops = &iommu_dma_gflush_ops;
} else {
- BTFIXUPSET_CALL(mmu_get_scsi_one, iommu_get_scsi_one_pflush, BTFIXUPCALL_NORM);
- BTFIXUPSET_CALL(mmu_get_scsi_sgl, iommu_get_scsi_sgl_pflush, BTFIXUPCALL_NORM);
+ sparc32_dma_ops = &iommu_dma_pflush_ops;
}
- BTFIXUPSET_CALL(mmu_release_scsi_one, iommu_release_scsi_one, BTFIXUPCALL_NORM);
- BTFIXUPSET_CALL(mmu_release_scsi_sgl, iommu_release_scsi_sgl, BTFIXUPCALL_NORM);
-
-#ifdef CONFIG_SBUS
- BTFIXUPSET_CALL(mmu_map_dma_area, iommu_map_dma_area, BTFIXUPCALL_NORM);
- BTFIXUPSET_CALL(mmu_unmap_dma_area, iommu_unmap_dma_area, BTFIXUPCALL_NORM);
-#endif
if (viking_mxcc_present || srmmu_modtype == HyperSparc) {
dvma_prot = __pgprot(SRMMU_CACHE | SRMMU_ET_PTE | SRMMU_PRIV);