sparc32: fix sparse warning in iommu.c
Fix following warning:
iommu.c:69:21: warning: incorrect type in assignment (different address spaces)
iommu_struct.regs is __iomem - fix up all users.
Introduce sbus operations for all read/write operations.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c
index 35384cb..491511d 100644
--- a/arch/sparc/mm/iommu.c
+++ b/arch/sparc/mm/iommu.c
@@ -58,6 +58,8 @@
struct iommu_struct *iommu;
unsigned int impl, vers;
unsigned long *bitmap;
+ unsigned long control;
+ unsigned long base;
unsigned long tmp;
iommu = kmalloc(sizeof(struct iommu_struct), GFP_KERNEL);
@@ -72,12 +74,14 @@
prom_printf("Cannot map IOMMU registers\n");
prom_halt();
}
- impl = (iommu->regs->control & IOMMU_CTRL_IMPL) >> 28;
- vers = (iommu->regs->control & IOMMU_CTRL_VERS) >> 24;
- tmp = iommu->regs->control;
- tmp &= ~(IOMMU_CTRL_RNGE);
- tmp |= (IOMMU_RNGE_256MB | IOMMU_CTRL_ENAB);
- iommu->regs->control = tmp;
+
+ control = sbus_readl(&iommu->regs->control);
+ impl = (control & IOMMU_CTRL_IMPL) >> 28;
+ vers = (control & IOMMU_CTRL_VERS) >> 24;
+ control &= ~(IOMMU_CTRL_RNGE);
+ control |= (IOMMU_RNGE_256MB | IOMMU_CTRL_ENAB);
+ sbus_writel(control, &iommu->regs->control);
+
iommu_invalidate(iommu->regs);
iommu->start = IOMMU_START;
iommu->end = 0xffffffff;
@@ -99,7 +103,9 @@
memset(iommu->page_table, 0, IOMMU_NPTES*sizeof(iopte_t));
flush_cache_all();
flush_tlb_all();
- iommu->regs->base = __pa((unsigned long) iommu->page_table) >> 4;
+
+ base = __pa((unsigned long)iommu->page_table) >> 4;
+ sbus_writel(base, &iommu->regs->base);
iommu_invalidate(iommu->regs);
bitmap = kmalloc(IOMMU_NPTES>>3, GFP_KERNEL);