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#ifndef DEVICE_H
#define DEVICE_H
#include <stdint.h>
#include <device/resource.h>
#include <device/path.h>
struct device;
typedef struct device * device_t;
struct pci_operations;
struct pci_bus_operations;
struct smbus_bus_operations;
/* Chip operations */
struct chip_operations {
void (*enable_dev)(struct device *dev);
const char *name;
};
#define CHIP_NAME(X) .name = X,
struct bus;
struct device_operations {
void (*read_resources)(device_t dev);
void (*set_resources)(device_t dev);
void (*enable_resources)(device_t dev);
void (*init)(device_t dev);
unsigned int (*scan_bus)(device_t bus, unsigned int max);
void (*enable)(device_t dev);
void (*set_link)(device_t dev, unsigned int link);
void (*reset_bus)(struct bus *bus);
const struct pci_operations *ops_pci;
const struct smbus_bus_operations *ops_smbus_bus;
const struct pci_bus_operations *ops_pci_bus;
};
struct bus {
device_t dev; /* This bridge device */
device_t children; /* devices behind this bridge */
unsigned bridge_ctrl; /* Bridge control register */
unsigned char link; /* The index of this link */
uint16_t secondary; /* secondary bus number */
uint16_t subordinate; /* max subordinate bus number */
unsigned char cap; /* PCi capability offset */
unsigned reset_needed : 1;
unsigned disable_relaxed_ordering : 1;
};
#define MAX_RESOURCES 24
#define MAX_LINKS 8
/*
* There is one device structure for each slot-number/function-number
* combination:
*/
struct device {
struct bus * bus; /* bus this device is on, for bridge
* devices, it is the up stream bus */
device_t sibling; /* next device on this bus */
device_t next; /* chain of all devices */
struct device_path path;
unsigned vendor;
unsigned device;
unsigned int class; /* 3 bytes: (base, sub, prog-if) */
unsigned int hdr_type; /* PCI header type */
unsigned int enabled : 1; /* set if we should enable the device */
unsigned int initialized : 1; /* set if we have initialized the device */
unsigned int on_mainboard : 1;
unsigned long rom_address;
u8 command;
/* Base registers for this device. I/O, MEM and Expansion ROM */
struct resource resource[MAX_RESOURCES];
unsigned int resources;
/* links are (downstream) buses attached to the device, usually a leaf
* device with no children have 0 buses attached and a bridge has 1 bus
*/
struct bus link[MAX_LINKS];
/* number of buses attached to the device */
unsigned int links;
struct device_operations *ops;
struct chip_operations *chip_ops;
void *chip_info;
};
/**
* This is the root of the device tree. The device tree is defined in the
* static.c file and is generated by the config tool at compile time.
*/
extern struct device dev_root;
extern struct device *all_devices; /* list of all devices */
/* Generic device interface functions */
device_t alloc_dev(struct bus *parent, struct device_path *path);
void dev_enumerate(void);
void dev_configure(void);
void dev_enable(void);
void dev_initialize(void);
void dev_optimize(void);
/* Generic device helper functions */
int reset_bus(struct bus *bus);
unsigned int scan_bus(struct device *bus, unsigned int max);
void assign_resources(struct bus *bus);
void enable_resources(struct device *dev);
void enumerate_static_device(void);
void enumerate_static_devices(void);
const char *dev_path(device_t dev);
const char *bus_path(struct bus *bus);
void dev_set_enabled(device_t dev, int enable);
void disable_children(struct bus *bus);
/* Helper functions */
device_t find_dev_path(struct bus *parent, struct device_path *path);
device_t alloc_find_dev(struct bus *parent, struct device_path *path);
device_t dev_find_device (unsigned int vendor, unsigned int device, device_t from);
device_t dev_find_class (unsigned int class, device_t from);
device_t dev_find_slot (unsigned int bus, unsigned int devfn);
device_t dev_find_slot_on_smbus (unsigned int bus, unsigned int addr);
/* Debug functions */
void print_resource_tree(struct device * root, int debug_level,
const char *msg);
void show_devs_tree(struct device *dev, int debug_level, int depth, int linknum);
void show_devs_subtree(struct device *root, int debug_level, const char *msg);
void show_all_devs(int debug_level, const char *msg);
void show_all_devs_tree(int debug_level, const char *msg);
void show_one_resource(int debug_level, struct device *dev,
struct resource *resource, const char *comment);
void show_all_devs_resources(int debug_level, const char* msg);
/* Rounding for boundaries.
* Due to some chip bugs, go ahead and round IO to 16
*/
#define DEVICE_IO_ALIGN 16
#define DEVICE_MEM_ALIGN 4096
extern struct device_operations default_dev_ops_root;
void pci_domain_read_resources(struct device *dev);
unsigned int pci_domain_scan_bus(struct device *dev, unsigned int max);
void root_dev_read_resources(device_t dev);
void root_dev_set_resources(device_t dev);
unsigned int scan_static_bus(device_t bus, unsigned int max);
void enable_childrens_resources(device_t dev);
void root_dev_enable_resources(device_t dev);
unsigned int root_dev_scan_bus(device_t root, unsigned int max);
void root_dev_init(device_t dev);
void root_dev_reset(struct bus *bus);
#endif /* DEVICE_H */
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