include/linux/of_pci.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __OF_PCI_H
   3 #define __OF_PCI_H
   4
   5 #include <linux/pci.h>
   6 #include <linux/msi.h>
   7
   8 struct pci_dev;
   9 struct of_phandle_args;
  10 struct device_node;
  11
  12 #ifdef CONFIG_OF_PCI
  13 int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq);
  14 struct device_node *of_pci_find_child_device(struct device_node *parent,
  15                                              unsigned int devfn);
  16 int of_pci_get_devfn(struct device_node *np);
  17 int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin);
  18 int of_pci_parse_bus_range(struct device_node *node, struct resource *res);
  19 int of_get_pci_domain_nr(struct device_node *node);
  20 int of_pci_get_max_link_speed(struct device_node *node);
  21 void of_pci_check_probe_only(void);
  22 int of_pci_map_rid(struct device_node *np, u32 rid,
  23                    const char *map_name, const char *map_mask_name,
  24                    struct device_node **target, u32 *id_out);
  25 #else
  26 static inline int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq)
  27 {
  28         return 0;
  29 }
  30
  31 static inline struct device_node *of_pci_find_child_device(struct device_node *parent,
  32                                              unsigned int devfn)
  33 {
  34         return NULL;
  35 }
  36
  37 static inline int of_pci_get_devfn(struct device_node *np)
  38 {
  39         return -EINVAL;
  40 }
  41
  42 static inline int
  43 of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin)
  44 {
  45         return 0;
  46 }
  47
  48 static inline int
  49 of_pci_parse_bus_range(struct device_node *node, struct resource *res)
  50 {
  51         return -EINVAL;
  52 }
  53
  54 static inline int
  55 of_get_pci_domain_nr(struct device_node *node)
  56 {
  57         return -1;
  58 }
  59
  60 static inline int of_pci_map_rid(struct device_node *np, u32 rid,
  61                         const char *map_name, const char *map_mask_name,
  62                         struct device_node **target, u32 *id_out)
  63 {
  64         return -EINVAL;
  65 }
  66
  67 static inline int
  68 of_pci_get_max_link_speed(struct device_node *node)
  69 {
  70         return -EINVAL;
  71 }
  72
  73 static inline void of_pci_check_probe_only(void) { }
  74 #endif
  75
  76 #if defined(CONFIG_OF_ADDRESS)
  77 int of_pci_get_host_bridge_resources(struct device_node *dev,
  78                         unsigned char busno, unsigned char bus_max,
  79                         struct list_head *resources, resource_size_t *io_base);
  80 #else
  81 static inline int of_pci_get_host_bridge_resources(struct device_node *dev,
  82                         unsigned char busno, unsigned char bus_max,
  83                         struct list_head *resources, resource_size_t *io_base)
  84 {
  85         return -EINVAL;
  86 }
  87 #endif
  88
  89 #endif