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