![Rob Herring](/assets/img/avatar_default.png)
Implement pci_address_to_pio as weak function to remove the dependency on asm/prom.h. This is in preparation to make prom.h optional. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Grant Likely <grant.likely@linaro.org> Cc: Michal Simek <monstr@monstr.eu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: x86@kernel.org Cc: Grant Likely <grant.likely@linaro.org>
125 lines
3.3 KiB
C
125 lines
3.3 KiB
C
#ifndef __OF_ADDRESS_H
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#define __OF_ADDRESS_H
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#include <linux/ioport.h>
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#include <linux/errno.h>
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#include <linux/of.h>
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struct of_pci_range_parser {
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struct device_node *node;
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const __be32 *range;
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const __be32 *end;
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int np;
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int pna;
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};
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struct of_pci_range {
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u32 pci_space;
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u64 pci_addr;
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u64 cpu_addr;
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u64 size;
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u32 flags;
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};
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#define for_each_of_pci_range(parser, range) \
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for (; of_pci_range_parser_one(parser, range);)
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static inline void of_pci_range_to_resource(struct of_pci_range *range,
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struct device_node *np,
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struct resource *res)
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{
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res->flags = range->flags;
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res->start = range->cpu_addr;
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res->end = range->cpu_addr + range->size - 1;
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res->parent = res->child = res->sibling = NULL;
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res->name = np->full_name;
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}
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#ifdef CONFIG_OF_ADDRESS
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extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
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extern bool of_can_translate_address(struct device_node *dev);
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extern int of_address_to_resource(struct device_node *dev, int index,
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struct resource *r);
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extern struct device_node *of_find_matching_node_by_address(
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struct device_node *from,
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const struct of_device_id *matches,
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u64 base_address);
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extern void __iomem *of_iomap(struct device_node *device, int index);
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/* Extract an address from a device, returns the region size and
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* the address space flags too. The PCI version uses a BAR number
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* instead of an absolute index
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*/
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extern const __be32 *of_get_address(struct device_node *dev, int index,
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u64 *size, unsigned int *flags);
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extern unsigned long pci_address_to_pio(phys_addr_t addr);
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extern int of_pci_range_parser_init(struct of_pci_range_parser *parser,
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struct device_node *node);
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extern struct of_pci_range *of_pci_range_parser_one(
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struct of_pci_range_parser *parser,
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struct of_pci_range *range);
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#else /* CONFIG_OF_ADDRESS */
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#ifndef of_address_to_resource
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static inline int of_address_to_resource(struct device_node *dev, int index,
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struct resource *r)
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{
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return -EINVAL;
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}
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#endif
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static inline struct device_node *of_find_matching_node_by_address(
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struct device_node *from,
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const struct of_device_id *matches,
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u64 base_address)
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{
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return NULL;
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}
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#ifndef of_iomap
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static inline void __iomem *of_iomap(struct device_node *device, int index)
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{
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return NULL;
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}
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#endif
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static inline const __be32 *of_get_address(struct device_node *dev, int index,
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u64 *size, unsigned int *flags)
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{
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return NULL;
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}
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static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser,
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struct device_node *node)
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{
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return -1;
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}
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static inline struct of_pci_range *of_pci_range_parser_one(
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struct of_pci_range_parser *parser,
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struct of_pci_range *range)
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{
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return NULL;
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}
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#endif /* CONFIG_OF_ADDRESS */
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#if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI)
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extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no,
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u64 *size, unsigned int *flags);
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extern int of_pci_address_to_resource(struct device_node *dev, int bar,
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struct resource *r);
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#else /* CONFIG_OF_ADDRESS && CONFIG_PCI */
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static inline int of_pci_address_to_resource(struct device_node *dev, int bar,
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struct resource *r)
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{
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return -ENOSYS;
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}
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static inline const __be32 *of_get_pci_address(struct device_node *dev,
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int bar_no, u64 *size, unsigned int *flags)
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{
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return NULL;
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}
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#endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */
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#endif /* __OF_ADDRESS_H */
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