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 #if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_PCI) 13 struct device_node *of_pci_find_child_device(struct device_node *parent, 14 unsigned int devfn); 15 int of_pci_get_devfn(struct device_node *np); 16 int of_pci_parse_bus_range(struct device_node *node, struct resource *res); 17 int of_get_pci_domain_nr(struct device_node *node); 18 int of_pci_get_max_link_speed(struct device_node *node); 19 void of_pci_check_probe_only(void); 20 int of_pci_map_rid(struct device_node *np, u32 rid, 21 const char *map_name, const char *map_mask_name, 22 struct device_node **target, u32 *id_out); 23 #else 24 static inline struct device_node *of_pci_find_child_device(struct device_node *parent, 25 unsigned int devfn) 26 { 27 return NULL; 28 } 29 30 static inline int of_pci_get_devfn(struct device_node *np) 31 { 32 return -EINVAL; 33 } 34 35 static inline int 36 of_pci_parse_bus_range(struct device_node *node, struct resource *res) 37 { 38 return -EINVAL; 39 } 40 41 static inline int 42 of_get_pci_domain_nr(struct device_node *node) 43 { 44 return -1; 45 } 46 47 static inline int of_pci_map_rid(struct device_node *np, u32 rid, 48 const char *map_name, const char *map_mask_name, 49 struct device_node **target, u32 *id_out) 50 { 51 return -EINVAL; 52 } 53 54 static inline int 55 of_pci_get_max_link_speed(struct device_node *node) 56 { 57 return -EINVAL; 58 } 59 60 static inline void of_pci_check_probe_only(void) { } 61 #endif 62 63 #if IS_ENABLED(CONFIG_OF_IRQ) 64 int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin); 65 #else 66 static inline int 67 of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin) 68 { 69 return 0; 70 } 71 #endif 72 73 #if defined(CONFIG_OF_ADDRESS) 74 int of_pci_get_host_bridge_resources(struct device_node *dev, 75 unsigned char busno, unsigned char bus_max, 76 struct list_head *resources, resource_size_t *io_base); 77 #else 78 static inline int of_pci_get_host_bridge_resources(struct device_node *dev, 79 unsigned char busno, unsigned char bus_max, 80 struct list_head *resources, resource_size_t *io_base) 81 { 82 return -EINVAL; 83 } 84 #endif 85 86 #endif 87