* Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
*/
-#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <asm/cacheflush.h>
#include <asm/tlbflush.h>
#include <asm/dma.h>
+#include <asm/oplib.h>
/* #define IOUNIT_DEBUG */
#ifdef IOUNIT_DEBUG
struct linux_prom_registers iommu_promregs[PROMREG_MAX];
struct resource r;
- iounit = kmalloc(sizeof(struct iounit_struct), GFP_ATOMIC);
+ iounit = kzalloc(sizeof(struct iounit_struct), GFP_ATOMIC);
+ if (!iounit) {
+ prom_printf("SUN4D: Cannot alloc iounit, halting.\n");
+ prom_halt();
+ }
- memset(iounit, 0, sizeof(*iounit));
iounit->limit[0] = IOUNIT_BMAP1_START;
iounit->limit[1] = IOUNIT_BMAP2_START;
iounit->limit[2] = IOUNIT_BMAPM_START;
sbus->iommu = (struct iommu_struct *)iounit;
iounit->page_table = xpt;
+ spin_lock_init(&iounit->lock);
for (xptend = iounit->page_table + (16 * PAGE_SIZE) / sizeof(iopte_t);
xpt < xptend;)