[SPARC64]: Convert sun4v virtual-device layer to in-kernel PROM device tree.

Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 56 insertions, 88 deletions

diff --git a/arch/sparc64/kernel/devices.c b/arch/sparc64/kernel/devices.c
index 0dd95ae50e12..136f872a8a57 100644
--- a/arch/sparc64/kernel/devices.c
+++ b/arch/sparc64/kernel/devices.c
@@ -33,7 +33,7 @@ extern void cpu_probe(void);
 extern void central_probe(void);
 
 u32 sun4v_vdev_devhandle;
-int sun4v_vdev_root;
+struct device_node *sun4v_vdev_root;
 
 struct vdev_intmap {
         unsigned int phys;
@@ -50,102 +50,68 @@ struct vdev_intmask {
 
 static struct vdev_intmap *vdev_intmap;
 static int vdev_num_intmap;
-static struct vdev_intmask vdev_intmask;
+static struct vdev_intmask *vdev_intmask;
 
 static void __init sun4v_virtual_device_probe(void)
 {
-        struct linux_prom64_registers regs;
-        struct vdev_intmap *ip;
-        int node, sz, err;
+        struct linux_prom64_registers *regs;
+        struct property *prop;
+        struct device_node *dp;
+        int sz;
 
         if (tlb_type != hypervisor)
                 return;
 
-        node = prom_getchild(prom_root_node);
-        node = prom_searchsiblings(node, "virtual-devices");
-        if (!node) {
+        dp = of_find_node_by_name(NULL, "virtual-devices");
+        if (!dp) {
                 prom_printf("SUN4V: Fatal error, no virtual-devices node.\n");
                 prom_halt();
         }
 
-        sun4v_vdev_root = node;
+        sun4v_vdev_root = dp;
 
-        prom_getproperty(node, "reg", (char *)&regs, sizeof(regs));
-        sun4v_vdev_devhandle = (regs.phys_addr >> 32UL) & 0x0fffffff;
+        prop = of_find_property(dp, "reg", NULL);
+        regs = prop->value;
+        sun4v_vdev_devhandle = (regs[0].phys_addr >> 32UL) & 0x0fffffff;
 
-        sz = prom_getproplen(node, "interrupt-map");
-        if (sz <= 0) {
-                prom_printf("SUN4V: Error, no vdev interrupt-map.\n");
-                prom_halt();
-        }
-
-        if ((sz % sizeof(*ip)) != 0) {
-                prom_printf("SUN4V: Bogus interrupt-map property size %d\n",
-                            sz);
-                prom_halt();
-        }
-
-        vdev_intmap = ip = alloc_bootmem_low_pages(sz);
-        if (!vdev_intmap) {
-                prom_printf("SUN4V: Error, cannot allocate vdev_intmap.\n");
-                prom_halt();
-        }
-
-        err = prom_getproperty(node, "interrupt-map", (char *) ip, sz);
-        if (err == -1) {
-                prom_printf("SUN4V: Fatal error, no vdev interrupt-map.\n");
-                prom_halt();
-        }
-        if (err != sz) {
-                prom_printf("SUN4V: Inconsistent interrupt-map size, "
-                            "proplen(%d) vs getprop(%d).\n", sz,err);
-                prom_halt();
-        }
-
-        vdev_num_intmap = err / sizeof(*ip);
+        prop = of_find_property(dp, "interrupt-map", &sz);
+        vdev_intmap = prop->value;
+        vdev_num_intmap = sz / sizeof(struct vdev_intmap);
 
-        err = prom_getproperty(node, "interrupt-map-mask",
-                               (char *) &vdev_intmask,
-                               sizeof(vdev_intmask));
-        if (err <= 0) {
-                prom_printf("SUN4V: Fatal error, no vdev "
-                            "interrupt-map-mask.\n");
-                prom_halt();
-        }
-        if (err % sizeof(vdev_intmask)) {
-                prom_printf("SUN4V: Bogus interrupt-map-mask "
-                            "property size %d\n", err);
-                prom_halt();
-        }
+        prop = of_find_property(dp, "interrupt-map-mask", NULL);
+        vdev_intmask = prop->value;
 
-        printk("SUN4V: virtual-devices devhandle[%x]\n",
-               sun4v_vdev_devhandle);
+        printk("%s: Virtual Device Bus devhandle[%x]\n",
+               dp->full_name, sun4v_vdev_devhandle);
 }
 
-unsigned int sun4v_vdev_device_interrupt(unsigned int dev_node)
+unsigned int sun4v_vdev_device_interrupt(struct device_node *dev_node)
 {
+        struct property *prop;
         unsigned int irq, reg;
-        int err, i;
+        int i;
 
-        err = prom_getproperty(dev_node, "interrupts",
-                               (char *) &irq, sizeof(irq));
-        if (err <= 0) {
+        prop = of_find_property(dev_node, "interrupts", NULL);
+        if (!prop) {
                 printk("VDEV: Cannot get \"interrupts\" "
-                       "property for OBP node %x\n", dev_node);
+                       "property for OBP node %s\n",
+                       dev_node->full_name);
                 return 0;
         }
+        irq = *(unsigned int *) prop->value;
 
-        err = prom_getproperty(dev_node, "reg",
-                               (char *) &reg, sizeof(reg));
-        if (err <= 0) {
+        prop = of_find_property(dev_node, "reg", NULL);
+        if (!prop) {
                 printk("VDEV: Cannot get \"reg\" "
-                       "property for OBP node %x\n", dev_node);
+                       "property for OBP node %s\n",
+                       dev_node->full_name);
                 return 0;
         }
+        reg = *(unsigned int *) prop->value;
 
         for (i = 0; i < vdev_num_intmap; i++) {
-                if (vdev_intmap[i].phys == (reg & vdev_intmask.phys) &&
-                    vdev_intmap[i].irq == (irq & vdev_intmask.interrupt)) {
+                if (vdev_intmap[i].phys == (reg & vdev_intmask->phys) &&
+                    vdev_intmap[i].irq == (irq & vdev_intmask->interrupt)) {
                         irq = vdev_intmap[i].cinterrupt;
                         break;
                 }
@@ -153,7 +119,7 @@ unsigned int sun4v_vdev_device_interrupt(unsigned int dev_node)
 
         if (i == vdev_num_intmap) {
                 printk("VDEV: No matching interrupt map entry "
-                       "for OBP node %x\n", dev_node);
+                       "for OBP node %s\n", dev_node->full_name);
                 return 0;
         }
 
diff --git a/drivers/serial/sunhv.c b/drivers/serial/sunhv.c
index f137804b3133..ba22e256c6f7 100644
--- a/drivers/serial/sunhv.c
+++ b/drivers/serial/sunhv.c
@@ -427,31 +427,32 @@ static int __init hv_console_compatible(char *buf, int len)
 
 static unsigned int __init get_interrupt(void)
 {
-        const char *cons_str = "console";
-        const char *compat_str = "compatible";
-        int node = prom_getchild(sun4v_vdev_root);
-        char buf[64];
-        int err, len;
-
-        node = prom_searchsiblings(node, cons_str);
-        if (!node)
-                return 0;
+        struct device_node *dev_node;
 
-        len = prom_getproplen(node, compat_str);
-        if (len == 0 || len == -1)
-                return 0;
+        dev_node = sun4v_vdev_root->child;
+        while (dev_node != NULL) {
+                struct property *prop;
 
-        err = prom_getproperty(node, compat_str, buf, 64);
-        if (err == -1)
-                return 0;
+                if (strcmp(dev_node->name, "console"))
+                        goto next_sibling;
+
+                prop = of_find_property(dev_node, "compatible", NULL);
+                if (!prop)
+                        goto next_sibling;
 
-        if (!hv_console_compatible(buf, len))
+                if (hv_console_compatible(prop->value, prop->length))
+                        break;
+
+        next_sibling:
+                dev_node = dev_node->sibling;
+        }
+        if (!dev_node)
                 return 0;
 
         /* Ok, the this is the OBP node for the sun4v hypervisor
          * console device.  Decode the interrupt.
          */
-        return sun4v_vdev_device_interrupt(node);
+        return sun4v_vdev_device_interrupt(dev_node);
 }
 
 static int __init sunhv_init(void)
diff --git a/include/asm-sparc64/vdev.h b/include/asm-sparc64/vdev.h
index 996e6be7b976..25637c57675d 100644
--- a/include/asm-sparc64/vdev.h
+++ b/include/asm-sparc64/vdev.h
@@ -7,10 +7,11 @@
 #define _SPARC64_VDEV_H
 
 #include <linux/types.h>
+#include <asm/prom.h>
 
 extern u32 sun4v_vdev_devhandle;
-extern int sun4v_vdev_root;
+extern struct device_node *sun4v_vdev_root;
 
-extern unsigned int sun4v_vdev_device_interrupt(unsigned int);
+extern unsigned int sun4v_vdev_device_interrupt(struct device_node *dev_node);
 
 #endif /* !(_SPARC64_VDEV_H) */