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authorDavid S. Miller <davem@davemloft.net>2006-06-29 15:08:02 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-06-29 16:37:40 -0700
commit8f96cd1a69d4c43e3473406a1fdf15cd9f1de5e5 (patch)
tree34e43df9f2687720997e43a6c944c73ef61414db /arch/sparc/kernel/of_device.c
parent2b1e59787198e75fb2ffb3bb4fb247da1c55ac12 (diff)
downloadlinux-linaro-stable-8f96cd1a69d4c43e3473406a1fdf15cd9f1de5e5.tar.gz
[SPARC]: sparc32 side of of_device layer IRQ resolution.
Happily, life is much simpler on 32-bit sparc systems. The "intr" property, preferred over the "interrupts" property is used-as. Some minor translations of this value happen on sun4d systems. The stage is now set to rewrite the sparc serial driver probing to use the of_driver framework, and then to convert all SBUS, EBUS, and ISA drivers in-kind so that we can nuke all those special bus frameworks. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/of_device.c')
-rw-r--r--arch/sparc/kernel/of_device.c69
1 files changed, 62 insertions, 7 deletions
diff --git a/arch/sparc/kernel/of_device.c b/arch/sparc/kernel/of_device.c
index 3ebe6cc71e71..bc956c530376 100644
--- a/arch/sparc/kernel/of_device.c
+++ b/arch/sparc/kernel/of_device.c
@@ -129,6 +129,26 @@ static int of_device_resume(struct device * dev)
return error;
}
+static int node_match(struct device *dev, void *data)
+{
+ struct of_device *op = to_of_device(dev);
+ struct device_node *dp = data;
+
+ return (op->node == dp);
+}
+
+struct of_device *of_find_device_by_node(struct device_node *dp)
+{
+ struct device *dev = bus_find_device(&of_bus_type, NULL,
+ dp, node_match);
+
+ if (dev)
+ return to_of_device(dev);
+
+ return NULL;
+}
+EXPORT_SYMBOL(of_find_device_by_node);
+
#ifdef CONFIG_PCI
struct bus_type ebus_bus_type = {
.name = "ebus",
@@ -503,8 +523,8 @@ static struct of_device * __init scan_one_device(struct device_node *dp,
struct device *parent)
{
struct of_device *op = kzalloc(sizeof(*op), GFP_KERNEL);
- unsigned int *irq;
- int len;
+ struct linux_prom_irqs *intr;
+ int len, i;
if (!op)
return NULL;
@@ -517,11 +537,46 @@ static struct of_device * __init scan_one_device(struct device_node *dp,
if (op->portid == -1)
op->portid = of_getintprop_default(dp, "portid", -1);
- irq = of_get_property(dp, "interrupts", &len);
- if (irq)
- op->irq = *irq;
- else
- op->irq = 0xffffffff;
+ intr = of_get_property(dp, "intr", &len);
+ if (intr) {
+ op->num_irqs = len / sizeof(struct linux_prom_irqs);
+ for (i = 0; i < op->num_irqs; i++)
+ op->irqs[i] = intr[i].pri;
+ } else {
+ unsigned int *irq = of_get_property(dp, "interrupts", &len);
+
+ if (irq) {
+ op->num_irqs = len / sizeof(unsigned int);
+ for (i = 0; i < op->num_irqs; i++)
+ op->irqs[i] = irq[i];
+ } else {
+ op->num_irqs = 0;
+ }
+ }
+ if (sparc_cpu_model == sun4d) {
+ static int pil_to_sbus[] = {
+ 0, 0, 1, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 0,
+ };
+ struct device_node *busp = dp->parent;
+ struct linux_prom_registers *regs;
+ int board = of_getintprop_default(busp, "board#", 0);
+ int slot;
+
+ regs = of_get_property(dp, "reg", NULL);
+ slot = regs->which_io;
+
+ for (i = 0; i < op->num_irqs; i++) {
+ int this_irq = op->irqs[i];
+ int sbusl = pil_to_sbus[this_irq];
+
+ if (sbusl)
+ this_irq = (((board + 1) << 5) +
+ (sbusl << 2) +
+ slot);
+
+ op->irqs[i] = this_irq;
+ }
+ }
build_device_resources(op, parent);