patch-2.4.20 linux-2.4.20/include/asm-ppc/pci-bridge.h

• Lines: 91
• Date: Thu Nov 28 15:53:15 2002
• Orig file: linux-2.4.19/include/asm-ppc/pci-bridge.h
• Orig date: Mon May 21 15:02:06 2001

diff -urN linux-2.4.19/include/asm-ppc/pci-bridge.h linux-2.4.20/include/asm-ppc/pci-bridge.h
@@ -1,10 +1,13 @@
 /*
- * BK Id: SCCS/s.pci-bridge.h 1.11 05/21/01 01:31:30 cort
+ * BK Id: %F% %I% %G% %U% %#%
  */
 #ifdef __KERNEL__
 #ifndef _ASM_PCI_BRIDGE_H
 #define _ASM_PCI_BRIDGE_H
 
+#include <linux/ioport.h>
+#include <linux/pci.h>
+
 struct device_node;
 struct pci_controller;
 
@@ -16,12 +19,20 @@
 extern unsigned long pci_bus_io_base_phys(unsigned int bus);
 extern unsigned long pci_bus_mem_base_phys(unsigned int bus);
 
+/* Allocate a new PCI host bridge structure */
+extern struct pci_controller* pcibios_alloc_controller(void);
+
+/* Helper function for setting up resources */
+extern void pci_init_resource(struct resource *res, unsigned long start,
+			      unsigned long end, int flags, char *name);
+
 /*
  * PCI <-> OF matching functions 
  */
 extern int pci_device_from_OF_node(struct device_node *node,
 				   u8* bus, u8* devfn);
 extern struct device_node* pci_device_to_OF_node(struct pci_dev *);
+extern void pci_create_OF_bus_map(void);
 
 /* Get the PCI host controller for a bus */
 extern struct pci_controller* pci_bus_to_hose(int bus);
@@ -65,6 +76,12 @@
 	struct resource	io_resource;
 	struct resource mem_resources[3];
 	int mem_resource_count;
+
+	/* Host bridge I/O and Memory space
+	 * Used for BAR placement algorithms
+	 */
+	struct resource io_space;
+	struct resource mem_space;
 };
 
 /* These are used for config access before all the PCI probing
@@ -76,5 +93,41 @@
 int early_write_config_word(struct pci_controller *hose, int bus, int dev_fn, int where, u16 val);
 int early_write_config_dword(struct pci_controller *hose, int bus, int dev_fn, int where, u32 val);
 
+extern void setup_indirect_pci(struct pci_controller* hose, u32 cfg_addr,
+		u32 cfg_data);
+extern void setup_grackle(struct pci_controller *hose);
+
+extern unsigned char common_swizzle(struct pci_dev *, unsigned char *);
+
+/*
+ *   The following code swizzles for exactly one bridge.  The routine
+ *   common_swizzle below handles multiple bridges.  But there are a
+ *   some boards that don't follow the PCI spec's suggestion so we
+ *   break this piece out separately.
+ */
+static inline unsigned char bridge_swizzle(unsigned char pin,
+		unsigned char idsel) 
+{
+	return (((pin-1) + idsel) % 4) + 1;
+}
+
+/*
+ * The following macro is used to lookup irqs in a standard table
+ * format for those PPC systems that do not already have PCI
+ * interrupts properly routed.
+ */
+/* FIXME - double check this */
+#define PCI_IRQ_TABLE_LOOKUP						    \
+({ long _ctl_ = -1; 							    \
+   if (idsel >= min_idsel && idsel <= max_idsel && pin <= irqs_per_slot)    \
+     _ctl_ = pci_irq_table[idsel - min_idsel][pin-1];			    \
+   _ctl_; })
+
+/*
+ * Scan the buses below a given PCI host bridge and assign suitable
+ * resources to all devices found.
+ */
+extern int pciauto_bus_scan(struct pci_controller *, int);
+
 #endif
 #endif /* __KERNEL__ */