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-rw-r--r--arch/sparc/include/asm/io-unit.h2
-rw-r--r--arch/sparc/include/asm/iommu_32.h2
-rw-r--r--arch/sparc/kernel/ioport.c17
-rw-r--r--arch/sparc/mm/io-unit.c29
-rw-r--r--arch/sparc/mm/iommu.c35
5 files changed, 45 insertions, 40 deletions
diff --git a/arch/sparc/include/asm/io-unit.h b/arch/sparc/include/asm/io-unit.h
index 96823b47fd45..5df63ef95cf2 100644
--- a/arch/sparc/include/asm/io-unit.h
+++ b/arch/sparc/include/asm/io-unit.h
@@ -59,4 +59,6 @@ extern __u32 iounit_map_dma_init(struct sbus_bus *, int);
#define iounit_map_dma_finish(sbus, addr, len) mmu_release_scsi_one(addr, len, sbus)
extern __u32 iounit_map_dma_page(__u32, void *, struct sbus_bus *);
+extern void iounit_init(struct sbus_bus *sbus);
+
#endif /* !(_SPARC_IO_UNIT_H) */
diff --git a/arch/sparc/include/asm/iommu_32.h b/arch/sparc/include/asm/iommu_32.h
index 70c589c05a10..6b115a174c0c 100644
--- a/arch/sparc/include/asm/iommu_32.h
+++ b/arch/sparc/include/asm/iommu_32.h
@@ -118,4 +118,6 @@ static inline void iommu_invalidate_page(struct iommu_regs *regs, unsigned long
regs->pageflush = (ba & PAGE_MASK);
}
+extern void iommu_init(struct device_node *dp, struct sbus_bus *sbus);
+
#endif /* !(_SPARC_IOMMU_H) */
diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c
index 2a8a847764d8..f6158c4a3995 100644
--- a/arch/sparc/kernel/ioport.c
+++ b/arch/sparc/kernel/ioport.c
@@ -46,6 +46,8 @@
#include <asm/page.h>
#include <asm/pgalloc.h>
#include <asm/dma.h>
+#include <asm/iommu.h>
+#include <asm/io-unit.h>
#define mmu_inval_dma_area(p, l) /* Anton pulled it out for 2.4.0-xx */
@@ -515,18 +517,11 @@ void __init sbus_setup_iommu(struct sbus_bus *sbus, struct device_node *dp)
if (sparc_cpu_model != sun4d &&
parent != NULL &&
- !strcmp(parent->name, "iommu")) {
- extern void iommu_init(int iommu_node, struct sbus_bus *sbus);
+ !strcmp(parent->name, "iommu"))
+ iommu_init(parent, sbus);
- iommu_init(parent->node, sbus);
- }
-
- if (sparc_cpu_model == sun4d) {
- extern void iounit_init(int sbi_node, int iounit_node,
- struct sbus_bus *sbus);
-
- iounit_init(dp->node, parent->node, sbus);
- }
+ if (sparc_cpu_model == sun4d)
+ iounit_init(sbus);
#endif
}
diff --git a/arch/sparc/mm/io-unit.c b/arch/sparc/mm/io-unit.c
index f167835db3df..1093514a5773 100644
--- a/arch/sparc/mm/io-unit.c
+++ b/arch/sparc/mm/io-unit.c
@@ -34,13 +34,18 @@
#define IOPERM (IOUPTE_CACHE | IOUPTE_WRITE | IOUPTE_VALID)
#define MKIOPTE(phys) __iopte((((phys)>>4) & IOUPTE_PAGE) | IOPERM)
-void __init
-iounit_init(int sbi_node, int io_node, struct sbus_bus *sbus)
+void __init iounit_init(struct sbus_bus *sbus)
{
- iopte_t *xpt, *xptend;
+ struct device_node *dp = sbus->ofdev.node;
struct iounit_struct *iounit;
- struct linux_prom_registers iommu_promregs[PROMREG_MAX];
- struct resource r;
+ iopte_t *xpt, *xptend;
+ struct of_device *op;
+
+ op = of_find_device_by_node(dp);
+ if (!op) {
+ prom_printf("SUN4D: Cannot find SBI of_device.\n");
+ prom_halt();
+ }
iounit = kzalloc(sizeof(struct iounit_struct), GFP_ATOMIC);
if (!iounit) {
@@ -55,18 +60,14 @@ iounit_init(int sbi_node, int io_node, struct sbus_bus *sbus)
iounit->rotor[1] = IOUNIT_BMAP2_START;
iounit->rotor[2] = IOUNIT_BMAPM_START;
- xpt = NULL;
- if(prom_getproperty(sbi_node, "reg", (void *) iommu_promregs,
- sizeof(iommu_promregs)) != -1) {
- prom_apply_generic_ranges(io_node, 0, iommu_promregs, 3);
- memset(&r, 0, sizeof(r));
- r.flags = iommu_promregs[2].which_io;
- r.start = iommu_promregs[2].phys_addr;
- xpt = (iopte_t *) sbus_ioremap(&r, 0, PAGE_SIZE * 16, "XPT");
+ xpt = of_ioremap(&op->resource[2], 0, PAGE_SIZE * 16, "XPT");
+ if (!xpt) {
+ prom_printf("SUN4D: Cannot map External Page Table.");
+ prom_halt();
}
- if(!xpt) panic("Cannot map External Page Table.");
sbus->ofdev.dev.archdata.iommu = iounit;
+ op->dev.archdata.iommu = iounit;
iounit->page_table = xpt;
spin_lock_init(&iounit->lock);
diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c
index 4b934270f05e..a86c9f552fa1 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. */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 07:17:22 +0100