devman: detect acpi irq

git-svn-id: svn://kolibrios.org@1633 a494cfbc-eb01-0410-851d-a64ba20cac60

drivers/devman/pci/access.c

@@ -77,7 +77,7 @@ int pci_bus_read_config_word (struct pci_bus *bus, u32 devfn,
 
 
 int pci_bus_read_config_dword (struct pci_bus *bus, u32 devfn,
-                              int pos, u16 *value)
+                               int pos, u32 *value)
 {
     if ( pos & 3)
         return PCIBIOS_BAD_REGISTER_NUMBER;

drivers/devman/pci/pci.c

@@ -262,6 +262,31 @@ int pci_find_ext_capability(struct pci_dev *dev, int cap)
     return 0;
 }
 
+
+/**
+ * pci_swizzle_interrupt_pin - swizzle INTx for device behind bridge
+ * @dev: the PCI device
+ * @pin: the INTx pin (1=INTA, 2=INTB, 3=INTD, 4=INTD)
+ *
+ * Perform INTx swizzling for a device behind one level of bridge.  This is
+ * required by section 9.1 of the PCI-to-PCI bridge specification for devices
+ * behind bridges on add-in cards.  For devices with ARI enabled, the slot
+ * number is always 0 (see the Implementation Note in section 2.2.8.1 of
+ * the PCI Express Base Specification, Revision 2.1)
+ */
+u8 pci_swizzle_interrupt_pin(struct pci_dev *dev, u8 pin)
+{
+    int slot;
+
+ //   if (pci_ari_enabled(dev->bus))
+ //       slot = 0;
+ //   else
+        slot = PCI_SLOT(dev->devfn);
+
+    return (((pin - 1) + slot) % 4) + 1;
+}
+
+
 #if 0
 
 u32 pci_probe = 0;

drivers/devman/pci/probe.c

@@ -875,9 +875,7 @@ static struct pci_dev *pci_scan_device(struct pci_bus *bus, int devfn)
 
     /* some broken boards return 0 or ~0 if a slot is empty: */
     if (l == 0xffffffff || l == 0x00000000 ||
-        l == 0x0000ffff || l == 0xffff0000 ||
-        (l & 0xffff0000) == 0xffff0000     ||
-        (l & 0x0000ffff) == 0x0000ffff )
+        l == 0x0000ffff || l == 0xffff0000)
         return NULL;
 
     /* Configuration request Retry Status */