[POWERPC] Fix cell "new style" mapping and add debug

This fixes a typo in the "new style" code for mapping SPE resources,
which causes it to try to map the same resource 4 times.

It also adds some pr_debug's that are useful to track down issues with
the firmware when bringinh up new machines.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index d0fb959..7aa809d 100644 (file)
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -655,14 +655,19 @@ static int __init spu_map_interrupts(struct spu *spu, struct device_node *np)
 
        for (i=0; i < 3; i++) {
                ret = of_irq_map_one(np, i, &oirq);
-               if (ret)
+               if (ret) {
+                       pr_debug("spu_new: failed to get irq %d\n", i);
                        goto err;
-
+               }
                ret = -EINVAL;
+               pr_debug("  irq %d no 0x%x on %s\n", i, oirq.specifier[0],
+                        oirq.controller->full_name);
                spu->irqs[i] = irq_create_of_mapping(oirq.controller,
                                        oirq.specifier, oirq.size);
-               if (spu->irqs[i] == NO_IRQ)
+               if (spu->irqs[i] == NO_IRQ) {
+                       pr_debug("spu_new: failed to map it !\n");
                        goto err;
+               }
        }
        return 0;
 
@@ -681,7 +686,7 @@ static int spu_map_resource(struct device_node *node, int nr,
        struct resource resource = { };
        int ret;
 
-       ret = of_address_to_resource(node, 0, &resource);
+       ret = of_address_to_resource(node, nr, &resource);
        if (ret)
                goto out;
 
@@ -704,22 +709,42 @@ static int __init spu_map_device(struct spu *spu, struct device_node *node)
 
        ret = spu_map_resource(node, 0, (void __iomem**)&spu->local_store,
                                        &spu->local_store_phys);
-       if (ret)
+       if (ret) {
+               pr_debug("spu_new: failed to map %s resource 0\n",
+                        node->full_name);
                goto out;
+       }
        ret = spu_map_resource(node, 1, (void __iomem**)&spu->problem,
                                        &spu->problem_phys);
-       if (ret)
+       if (ret) {
+               pr_debug("spu_new: failed to map %s resource 1\n",
+                        node->full_name);
                goto out_unmap;
+       }
        ret = spu_map_resource(node, 2, (void __iomem**)&spu->priv2,
                                        NULL);
-       if (ret)
+       if (ret) {
+               pr_debug("spu_new: failed to map %s resource 2\n",
+                        node->full_name);
                goto out_unmap;
+       }
 
        if (!firmware_has_feature(FW_FEATURE_LPAR))
                ret = spu_map_resource(node, 3, (void __iomem**)&spu->priv1,
                                        NULL);
-       if (ret)
+       if (ret) {
+               pr_debug("spu_new: failed to map %s resource 3\n",
+                        node->full_name);
                goto out_unmap;
+       }
+       pr_debug("spu_new: %s maps:\n", node->full_name);
+       pr_debug("  local store   : 0x%016lx -> 0x%p\n",
+                spu->local_store_phys, spu->local_store);
+       pr_debug("  problem state : 0x%016lx -> 0x%p\n",
+                spu->problem_phys, spu->problem);
+       pr_debug("  priv2         :                       0x%p\n", spu->priv2);
+       pr_debug("  priv1         :                       0x%p\n", spu->priv1);
+
        return 0;
 
 out_unmap: