From 046e26a8ba10b8ceff822f8d91451ab6c1e08c4e Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Wed, 27 Aug 2008 04:54:04 -0700
Subject: sparc: Remove generic SBUS probing layer.

The individual SBUS IOMMU arch code now sets the IOMMU information
directly into the OF device objects.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/mm/io-unit.c | 30 ++++++++++++++++++++----------
 arch/sparc/mm/iommu.c   | 40 +++++++++++++++++++++-------------------
 2 files changed, 41 insertions(+), 29 deletions(-)

(limited to 'arch/sparc/mm')

diff --git a/arch/sparc/mm/io-unit.c b/arch/sparc/mm/io-unit.c
index 0f97ab30df3..caf551ad9d8 100644
--- a/arch/sparc/mm/io-unit.c
+++ b/arch/sparc/mm/io-unit.c
@@ -34,18 +34,10 @@
 #define IOPERM        (IOUPTE_CACHE | IOUPTE_WRITE | IOUPTE_VALID)
 #define MKIOPTE(phys) __iopte((((phys)>>4) & IOUPTE_PAGE) | IOPERM)
 
-void __init iounit_init(struct sbus_bus *sbus)
+static void __init iounit_iommu_init(struct of_device *op)
 {
-	struct device_node *dp = sbus->ofdev.node;
 	struct iounit_struct *iounit;
 	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) {
@@ -66,7 +58,6 @@ void __init iounit_init(struct sbus_bus *sbus)
 		prom_halt();
 	}
 	
-	sbus->ofdev.dev.archdata.iommu = iounit;
 	op->dev.archdata.iommu = iounit;
 	iounit->page_table = xpt;
 	spin_lock_init(&iounit->lock);
@@ -76,6 +67,25 @@ void __init iounit_init(struct sbus_bus *sbus)
 	     	iopte_val(*xpt++) = 0;
 }
 
+static int __init iounit_init(void)
+{
+	extern void sun4d_init_sbi_irq(void);
+	struct device_node *dp;
+
+	for_each_node_by_name(dp, "sbi") {
+		struct of_device *op = of_find_device_by_node(dp);
+
+		iounit_iommu_init(op);
+		of_propagate_archdata(op);
+	}
+
+	sun4d_init_sbi_irq();
+
+	return 0;
+}
+
+subsys_initcall(iounit_init);
+
 /* One has to hold iounit->lock to call this */
 static unsigned long iounit_get_area(struct iounit_struct *iounit, unsigned long vaddr, int size)
 {
diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c
index 2970cea877b..7c55450b55b 100644
--- a/arch/sparc/mm/iommu.c
+++ b/arch/sparc/mm/iommu.c
@@ -55,33 +55,20 @@ 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(struct device_node *parent, struct sbus_bus *sbus)
+static void __init sbus_iommu_init(struct of_device *op)
 {
-	struct of_device *parent_op, *op;
 	struct iommu_struct *iommu;
 	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 = of_ioremap(&parent_op->resource[0], 0, PAGE_SIZE * 3,
+	iommu->regs = of_ioremap(&op->resource[0], 0, PAGE_SIZE * 3,
 				 "iommu_regs");
 	if (!iommu->regs) {
 		prom_printf("Cannot map IOMMU registers\n");
@@ -132,14 +119,29 @@ void __init iommu_init(struct device_node *parent, struct sbus_bus *sbus)
 	else
 		iommu->usemap.num_colors = 1;
 
-	printk("IOMMU: impl %d vers %d table 0x%p[%d B] map [%d b]\n",
-	    impl, vers, iommu->page_table,
-	    (int)(IOMMU_NPTES*sizeof(iopte_t)), (int)IOMMU_NPTES);
+	printk(KERN_INFO "IOMMU: impl %d vers %d table 0x%p[%d B] map [%d b]\n",
+	       impl, vers, iommu->page_table,
+	       (int)(IOMMU_NPTES*sizeof(iopte_t)), (int)IOMMU_NPTES);
 
-	sbus->ofdev.dev.archdata.iommu = iommu;
 	op->dev.archdata.iommu = iommu;
 }
 
+static int __init iommu_init(void)
+{
+	struct device_node *dp;
+
+	for_each_node_by_name(dp, "iommu") {
+		struct of_device *op = of_find_device_by_node(dp);
+
+		sbus_iommu_init(op);
+		of_propagate_archdata(op);
+	}
+
+	return 0;
+}
+
+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. */
-- 
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