diff options
Diffstat (limited to 'arch/sparc/mm/iommu.c')
-rw-r--r-- | arch/sparc/mm/iommu.c | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c index 4b93427..a86c9f5 100644 --- a/arch/sparc/mm/iommu.c +++ b/arch/sparc/mm/iommu.c @@ -55,30 +55,34 @@ static pgprot_t dvma_prot; /* Consistent mapping pte flags */ #define IOPERM (IOPTE_CACHE | IOPTE_WRITE | IOPTE_VALID) #define MKIOPTE(pfn, perm) (((((pfn)<<8) & IOPTE_PAGE) | (perm)) & ~IOPTE_WAZ) -void __init -iommu_init(int iommund, struct sbus_bus *sbus) +void __init iommu_init(struct device_node *parent, struct sbus_bus *sbus) { - unsigned int impl, vers; - unsigned long tmp; + struct of_device *parent_op, *op; struct iommu_struct *iommu; - struct linux_prom_registers iommu_promregs[PROMREG_MAX]; - struct resource r; + unsigned int impl, vers; unsigned long *bitmap; + unsigned long tmp; + + parent_op = of_find_device_by_node(parent); + if (!parent_op) { + prom_printf("Unable to find IOMMU of_device\n"); + prom_halt(); + } + + op = of_find_device_by_node(sbus->ofdev.node); + if (!op) { + prom_printf("Unable to find SBUS of_device\n"); + prom_halt(); + } iommu = kmalloc(sizeof(struct iommu_struct), GFP_ATOMIC); if (!iommu) { prom_printf("Unable to allocate iommu structure\n"); prom_halt(); } - iommu->regs = NULL; - if (prom_getproperty(iommund, "reg", (void *) iommu_promregs, - sizeof(iommu_promregs)) != -1) { - memset(&r, 0, sizeof(r)); - r.flags = iommu_promregs[0].which_io; - r.start = iommu_promregs[0].phys_addr; - iommu->regs = (struct iommu_regs *) - sbus_ioremap(&r, 0, PAGE_SIZE * 3, "iommu_regs"); - } + + iommu->regs = of_ioremap(&parent_op->resource[0], 0, PAGE_SIZE * 3, + "iommu_regs"); if (!iommu->regs) { prom_printf("Cannot map IOMMU registers\n"); prom_halt(); @@ -133,6 +137,7 @@ iommu_init(int iommund, struct sbus_bus *sbus) (int)(IOMMU_NPTES*sizeof(iopte_t)), (int)IOMMU_NPTES); sbus->ofdev.dev.archdata.iommu = iommu; + op->dev.archdata.iommu = iommu; } /* This begs to be btfixup-ed by srmmu. */ |