Changeset 5d684e4 in mainline for kernel/genarch/src/ofw/pci.c

Timestamp:

2006-09-23T13:12:10Z (18 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

6ff1f1e

Parents:

28ecadb

Message:

Convert sparc64 framebuffer code to configure from the OpenFirmware device tree memory representation.

File:

• kernel/genarch/src/ofw/pci.c (modified) (2 diffs)

kernel/genarch/src/ofw/pci.c

@@ -42 +42 @@
 #include <macros.h>
 
-#define PCI_SPACE_MASK  0x03000000
+#define PCI_SPACE_MASK          0x03000000
+#define PCI_ABS_MASK            0x80000000      
+#define PCI_REG_MASK            0x000000ff
 
 bool ofw_pci_apply_ranges(ofw_tree_node_t *node, ofw_pci_reg_t *reg, uintptr_t *pa)
@@ -74 +76 @@
 }
 
+bool ofw_pci_reg_absolutize(ofw_tree_node_t *node, ofw_pci_reg_t *reg, ofw_pci_reg_t *out)
+{
+        if (reg->space & PCI_ABS_MASK) {
+                /* already absolute */
+                out->space = reg->space;
+                out->addr = reg->addr;
+                out->size = reg->size;
+                return true;
+        }
+        
+        ofw_tree_property_t *prop;
+        ofw_pci_reg_t *assigned_address;
+        count_t assigned_addresses;
+        
+        prop = ofw_tree_getprop(node, "assigned-addresses");
+        if (!prop)
+                panic("Can't find \"assigned-addresses\" property.\n");
+        
+        assigned_addresses = prop->size / sizeof(ofw_pci_reg_t);
+        assigned_address = prop->value;
+        
+        int i;
+        
+        for (i = 0; i < assigned_addresses; i++) {
+                if ((assigned_address[i].space & PCI_REG_MASK) == (reg->space & PCI_REG_MASK)) {
+                        out->space = assigned_address[i].space;
+                        out->addr = reg->addr + assigned_address[i].addr;
+                        out->size = reg->size;
+                        return true;
+                }
+        }
+        
+        return false;
+}
+
 /** @}
  */