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- Major update of the dynamic device tree so it can handle

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* subtractive resources
  * merging with the static device tree
  * more device types than just pci
- The piece to watch out for is the new enable_resources method that was needed in all of the drivers


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1096 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Eric Biederman
2003-09-02 03:36:25 +00:00
parent d4c14524f5
commit e9a271e32c
25 changed files with 876 additions and 377 deletions
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44
src/include/device/device.h
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@@ -3,6 +3,7 @@
#include <stdint.h>
#include <device/resource.h>
#include <device/path.h>
struct device;
typedef struct device * device_t;
@@ -10,33 +11,42 @@ typedef struct device * device_t;
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);
};
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 */
unsigned char secondary; /* secondary bus number */
unsigned char subordinate; /* max subordinate bus number */
unsigned char cap; /* PCi capability offset */
};
#define MAX_RESOURCES 6
#define MAX_LINKS 3
/*
* There is one device structure for each slot-number/function-number
* combination:
*/
struct device {
device_t bus; /* bus this device is on */
device_t children; /* devices behind this bridge */
device_t sibling; /* next device on this bus */
device_t next; /* chain of all devices */
struct bus * bus; /* bus this device is on */
device_t sibling; /* next device on this bus */
device_t next; /* chain of all devices */
unsigned int devfn; /* encoded device & function index */
struct device_path path;
unsigned short vendor;
unsigned short device;
unsigned int class; /* 3 bytes: (base,sub,prog-if) */
unsigned int hdr_type; /* PCI header type */
unsigned int enable : 1; /* set if we should enable the device */
unsigned char secondary; /* secondary bus number */
unsigned char subordinate; /* max subordinate bus number */
uint8_t command;
/*
* In theory, the irq level can be read from configuration
@@ -56,6 +66,10 @@ struct device {
*/
struct resource resource[MAX_RESOURCES];
unsigned int resources;
struct bus link[MAX_LINKS];
unsigned int links;
unsigned long rom_address;
struct device_operations *ops;
};
@@ -65,19 +79,22 @@ extern struct device *all_devices; /* list of all devices */
/* Generic device interface functions */
extern device_t alloc_dev(struct bus *parent, struct device_path *path);
extern void dev_enumerate(void);
extern void dev_configure(void);
extern void dev_enable(void);
extern void dev_initialize(void);
/* Generic device helper functions */
void append_device(device_t dev);
void compute_allocate_resource(device_t bus, struct resource *bridge,
extern void compute_allocate_resource(struct bus *bus, struct resource *bridge,
unsigned long type_mask, unsigned long type);
void assign_resources(device_t bus);
void enumerate_static_device(void);
extern void assign_resources(struct bus *bus);
extern void enable_resources(struct device *dev);
extern void enumerate_static_device(void);
extern const char *dev_path(device_t dev);
/* Helper functions */
device_t alloc_find_dev(struct bus *bus, 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);
@@ -88,5 +105,10 @@ device_t dev_find_slot (unsigned int bus, unsigned int devfn);
#define DEVICE_IO_ALIGN 16
#define DEVICE_MEM_ALIGN 4096
struct device_operations default_dev_ops_root;
extern void root_dev_read_resources(device_t dev);
extern void root_dev_set_resources(device_t dev);
extern unsigned int walk_static_devices(device_t bus, unsigned int max);
extern void enable_childrens_resources(device_t dev);
#endif /* DEVICE_H */