5 #include <device/resource.h>
6 #include <device/path.h>
10 typedef struct device * device_t;
11 struct pci_operations;
12 struct pci_bus_operations;
13 struct smbus_bus_operations;
16 struct chip_operations {
17 void (*enable_dev)(struct device *dev);
21 #define CHIP_NAME(X) .name = X,
25 struct device_operations {
26 void (*read_resources)(device_t dev);
27 void (*set_resources)(device_t dev);
28 void (*enable_resources)(device_t dev);
29 void (*init)(device_t dev);
30 unsigned int (*scan_bus)(device_t bus, unsigned int max);
31 void (*enable)(device_t dev);
32 void (*set_link)(device_t dev, unsigned int link);
33 void (*reset_bus)(struct bus *bus);
34 const struct pci_operations *ops_pci;
35 const struct smbus_bus_operations *ops_smbus_bus;
36 const struct pci_bus_operations *ops_pci_bus;
41 device_t dev; /* This bridge device */
42 device_t children; /* devices behind this bridge */
43 unsigned bridge_ctrl; /* Bridge control register */
44 unsigned char link; /* The index of this link */
45 uint16_t secondary; /* secondary bus number */
46 uint16_t subordinate; /* max subordinate bus number */
47 unsigned char cap; /* PCi capability offset */
48 unsigned reset_needed : 1;
49 unsigned disable_relaxed_ordering : 1;
52 #define MAX_RESOURCES 24
55 * There is one device structure for each slot-number/function-number
60 struct bus * bus; /* bus this device is on, for bridge
61 * devices, it is the up stream bus */
62 device_t sibling; /* next device on this bus */
63 device_t next; /* chain of all devices */
65 struct device_path path;
68 unsigned int class; /* 3 bytes: (base, sub, prog-if) */
69 unsigned int hdr_type; /* PCI header type */
70 unsigned int enabled : 1; /* set if we should enable the device */
71 unsigned int initialized : 1; /* set if we have initialized the device */
72 unsigned int on_mainboard : 1;
73 unsigned long rom_address;
77 /* Base registers for this device. I/O, MEM and Expansion ROM */
78 struct resource resource[MAX_RESOURCES];
79 unsigned int resources;
81 /* links are (downstream) buses attached to the device, usually a leaf
82 * device with no children have 0 buses attached and a bridge has 1 bus
84 struct bus link[MAX_LINKS];
85 /* number of buses attached to the device */
88 struct device_operations *ops;
89 struct chip_operations *chip_ops;
93 extern struct device dev_root; /* root bus */
94 extern struct device *all_devices; /* list of all devices */
97 /* Generic device interface functions */
98 device_t alloc_dev(struct bus *parent, struct device_path *path);
99 void dev_enumerate(void);
100 void dev_configure(void);
101 void dev_enable(void);
102 void dev_initialize(void);
103 void dev_optimize(void);
105 /* Generic device helper functions */
106 int reset_bus(struct bus *bus);
107 unsigned int scan_bus(struct device *bus, unsigned int max);
108 void assign_resources(struct bus *bus);
109 void enable_resources(struct device *dev);
110 void enumerate_static_device(void);
111 void enumerate_static_devices(void);
112 const char *dev_path(device_t dev);
113 const char *bus_path(struct bus *bus);
114 void dev_set_enabled(device_t dev, int enable);
115 void disable_children(struct bus *bus);
117 /* Helper functions */
118 device_t find_dev_path(struct bus *parent, struct device_path *path);
119 device_t alloc_find_dev(struct bus *parent, struct device_path *path);
120 device_t dev_find_device (unsigned int vendor, unsigned int device, device_t from);
121 device_t dev_find_class (unsigned int class, device_t from);
122 device_t dev_find_slot (unsigned int bus, unsigned int devfn);
123 device_t dev_find_slot_on_smbus (unsigned int bus, unsigned int addr);
125 /* Debug functions */
126 void print_resource_tree(struct device * root, int debug_level,
128 void show_devs_tree(struct device *dev, int debug_level, int depth, int linknum);
129 void show_devs_subtree(struct device *root, int debug_level, const char *msg);
130 void show_all_devs(int debug_level, const char *msg);
131 void show_one_resource(int debug_level, struct device *dev,
132 struct resource *resource, const char *comment);
133 void show_all_devs_resources(int debug_level, const char* msg);
135 /* Rounding for boundaries.
136 * Due to some chip bugs, go ahead and round IO to 16
138 #define DEVICE_IO_ALIGN 16
139 #define DEVICE_MEM_ALIGN 4096
141 extern struct device_operations default_dev_ops_root;
142 void pci_domain_read_resources(struct device *dev);
143 unsigned int pci_domain_scan_bus(struct device *dev, unsigned int max);
144 void root_dev_read_resources(device_t dev);
145 void root_dev_set_resources(device_t dev);
146 unsigned int scan_static_bus(device_t bus, unsigned int max);
147 void enable_childrens_resources(device_t dev);
148 void root_dev_enable_resources(device_t dev);
149 unsigned int root_dev_scan_bus(device_t root, unsigned int max);
150 void root_dev_init(device_t dev);
151 #endif /* DEVICE_H */