mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-20 03:04:01 +08:00
c5076cfe76
No functional changes in this patch. PCI I/O space mapping code does not depend on OF; therefore it can be moved to PCI core code. This way we will be able to use it, e.g., in ACPI PCI code. Suggested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Tomasz Nowicki <tn@semihalf.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: Arnd Bergmann <arnd@arndb.de> CC: Liviu Dudau <Liviu.Dudau@arm.com>
157 lines
4.2 KiB
C
157 lines
4.2 KiB
C
#ifndef __OF_ADDRESS_H
|
|
#define __OF_ADDRESS_H
|
|
#include <linux/ioport.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/of.h>
|
|
#include <linux/io.h>
|
|
|
|
struct of_pci_range_parser {
|
|
struct device_node *node;
|
|
const __be32 *range;
|
|
const __be32 *end;
|
|
int np;
|
|
int pna;
|
|
};
|
|
|
|
struct of_pci_range {
|
|
u32 pci_space;
|
|
u64 pci_addr;
|
|
u64 cpu_addr;
|
|
u64 size;
|
|
u32 flags;
|
|
};
|
|
|
|
#define for_each_of_pci_range(parser, range) \
|
|
for (; of_pci_range_parser_one(parser, range);)
|
|
|
|
/* Translate a DMA address from device space to CPU space */
|
|
extern u64 of_translate_dma_address(struct device_node *dev,
|
|
const __be32 *in_addr);
|
|
|
|
#ifdef CONFIG_OF_ADDRESS
|
|
extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
|
|
extern int of_address_to_resource(struct device_node *dev, int index,
|
|
struct resource *r);
|
|
extern struct device_node *of_find_matching_node_by_address(
|
|
struct device_node *from,
|
|
const struct of_device_id *matches,
|
|
u64 base_address);
|
|
extern void __iomem *of_iomap(struct device_node *device, int index);
|
|
void __iomem *of_io_request_and_map(struct device_node *device,
|
|
int index, const char *name);
|
|
|
|
/* Extract an address from a device, returns the region size and
|
|
* the address space flags too. The PCI version uses a BAR number
|
|
* instead of an absolute index
|
|
*/
|
|
extern const __be32 *of_get_address(struct device_node *dev, int index,
|
|
u64 *size, unsigned int *flags);
|
|
|
|
extern int of_pci_range_parser_init(struct of_pci_range_parser *parser,
|
|
struct device_node *node);
|
|
extern struct of_pci_range *of_pci_range_parser_one(
|
|
struct of_pci_range_parser *parser,
|
|
struct of_pci_range *range);
|
|
extern int of_dma_get_range(struct device_node *np, u64 *dma_addr,
|
|
u64 *paddr, u64 *size);
|
|
extern bool of_dma_is_coherent(struct device_node *np);
|
|
#else /* CONFIG_OF_ADDRESS */
|
|
static inline void __iomem *of_io_request_and_map(struct device_node *device,
|
|
int index, const char *name)
|
|
{
|
|
return IOMEM_ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
static inline u64 of_translate_address(struct device_node *np,
|
|
const __be32 *addr)
|
|
{
|
|
return OF_BAD_ADDR;
|
|
}
|
|
|
|
static inline struct device_node *of_find_matching_node_by_address(
|
|
struct device_node *from,
|
|
const struct of_device_id *matches,
|
|
u64 base_address)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline const __be32 *of_get_address(struct device_node *dev, int index,
|
|
u64 *size, unsigned int *flags)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser,
|
|
struct device_node *node)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline struct of_pci_range *of_pci_range_parser_one(
|
|
struct of_pci_range_parser *parser,
|
|
struct of_pci_range *range)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline int of_dma_get_range(struct device_node *np, u64 *dma_addr,
|
|
u64 *paddr, u64 *size)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
|
|
static inline bool of_dma_is_coherent(struct device_node *np)
|
|
{
|
|
return false;
|
|
}
|
|
#endif /* CONFIG_OF_ADDRESS */
|
|
|
|
#ifdef CONFIG_OF
|
|
extern int of_address_to_resource(struct device_node *dev, int index,
|
|
struct resource *r);
|
|
void __iomem *of_iomap(struct device_node *node, int index);
|
|
#else
|
|
static inline int of_address_to_resource(struct device_node *dev, int index,
|
|
struct resource *r)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline void __iomem *of_iomap(struct device_node *device, int index)
|
|
{
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
#if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI)
|
|
extern const __be32 *of_get_pci_address(struct device_node *dev, int bar_no,
|
|
u64 *size, unsigned int *flags);
|
|
extern int of_pci_address_to_resource(struct device_node *dev, int bar,
|
|
struct resource *r);
|
|
extern int of_pci_range_to_resource(struct of_pci_range *range,
|
|
struct device_node *np,
|
|
struct resource *res);
|
|
#else /* CONFIG_OF_ADDRESS && CONFIG_PCI */
|
|
static inline int of_pci_address_to_resource(struct device_node *dev, int bar,
|
|
struct resource *r)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline const __be32 *of_get_pci_address(struct device_node *dev,
|
|
int bar_no, u64 *size, unsigned int *flags)
|
|
{
|
|
return NULL;
|
|
}
|
|
static inline int of_pci_range_to_resource(struct of_pci_range *range,
|
|
struct device_node *np,
|
|
struct resource *res)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
#endif /* CONFIG_OF_ADDRESS && CONFIG_PCI */
|
|
|
|
#endif /* __OF_ADDRESS_H */
|
|
|