david/ipxe
david
/
ipxe
Archived
1
0
Fork 0
Code

Matches new pci.c interface.

This commit is contained in:
Michael Brown 2005-04-12 16:45:40 +00:00
parent 5603c879c4
commit 6343381e25
1 changed files with 83 additions and 115 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

198
src/include/pci.h
View File

@ -21,8 +21,14 @@
* your option) any later version.
*/
#include "stdint.h"
#include "pci_ids.h"
/*
* PCI constants
*
*/
#define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */
#define PCI_COMMAND_MEM 0x2 /* Enable response in mem space */
#define PCI_COMMAND_MASTER 0x4 /* Enable bus mastering */
@ -35,17 +41,6 @@
#define PCI_COMMAND_SERR 0x100 /* Enable SERR */
#define PCI_COMMAND_FAST_BACK 0x200 /* Enable back-to-back writes */
#define PCIBIOS_PCI_FUNCTION_ID 0xb1XX
#define PCIBIOS_PCI_BIOS_PRESENT 0xb101
#define PCIBIOS_FIND_PCI_DEVICE 0xb102
#define PCIBIOS_FIND_PCI_CLASS_CODE 0xb103
#define PCIBIOS_GENERATE_SPECIAL_CYCLE 0xb106
#define PCIBIOS_READ_CONFIG_BYTE 0xb108
#define PCIBIOS_READ_CONFIG_WORD 0xb109
#define PCIBIOS_READ_CONFIG_DWORD 0xb10a
#define PCIBIOS_WRITE_CONFIG_BYTE 0xb10b
#define PCIBIOS_WRITE_CONFIG_WORD 0xb10c
#define PCIBIOS_WRITE_CONFIG_DWORD 0xb10d
#define PCI_VENDOR_ID 0x00 /* 16 bits */
#define PCI_DEVICE_ID 0x02 /* 16 bits */
@ -238,125 +233,98 @@
#define PCI_MSI_DATA_32 8 /* 16 bits of data for 32-bit devices */
#define PCI_MSI_DATA_64 12 /* 16 bits of data for 64-bit devices */
#define PCI_SLOT(devfn) ((devfn) >> 3)
#define PCI_FUNC(devfn) ((devfn) & 0x07)
#define BIOS32_SIGNATURE (('_' << 0) + ('3' << 8) + ('2' << 16) + ('_' << 24))
/* PCI signature: "PCI " */
#define PCI_SIGNATURE (('P' << 0) + ('C' << 8) + ('I' << 16) + (' ' << 24))
/* PCI service signature: "$PCI" */
#define PCI_SERVICE (('$' << 0) + ('P' << 8) + ('C' << 16) + ('I' << 24))
union bios32 {
struct {
unsigned long signature; /* _32_ */
unsigned long entry; /* 32 bit physical address */
unsigned char revision; /* Revision level, 0 */
unsigned char length; /* Length in paragraphs should be 01 */
unsigned char checksum; /* All bytes must add up to zero */
unsigned char reserved[5]; /* Must be zero */
} fields;
char chars[16];
};
struct pci_device;
struct dev;
typedef int (*pci_probe_t)(struct dev *, struct pci_device *);
/*
* A physical PCI device
*
*/
struct pci_device {
uint32_t class;
uint32_t membase; /* BAR 1 */
uint32_t ioaddr; /* first IO BAR */
uint16_t vendor, dev_id;
const char *name;
/* membase and ioaddr are silly and depricated */
unsigned int membase;
unsigned int ioaddr;
unsigned int romaddr;
unsigned char irq;
unsigned char devfn;
unsigned char bus;
unsigned char use_specified;
const struct pci_driver *driver;
uint16_t class;
uint16_t busdevfn;
uint8_t revision;
uint8_t irq;
};
#define PCI_BUS(busdevfn) ( ( (busdevfn) >> 8 ) & 0xff )
#define PCI_DEV(busdevfn) ( ( (busdevfn) >> 3 ) & 0x1f )
#define PCI_FUNC(busdevfn) ( (busdevfn) & 0x07 )
extern void scan_pci_bus(int type, struct pci_device *dev);
extern void find_pci(int type, struct pci_device *dev);
extern int pcibios_read_config_byte(unsigned int bus, unsigned int device_fn, unsigned int where, uint8_t *value);
extern int pcibios_write_config_byte (unsigned int bus, unsigned int device_fn, unsigned int where, uint8_t value);
extern int pcibios_read_config_word(unsigned int bus, unsigned int device_fn, unsigned int where, uint16_t *value);
extern int pcibios_write_config_word (unsigned int bus, unsigned int device_fn, unsigned int where, uint16_t value);
extern int pcibios_read_config_dword(unsigned int bus, unsigned int device_fn, unsigned int where, uint32_t *value);
extern int pcibios_write_config_dword(unsigned int bus, unsigned int device_fn, unsigned int where, uint32_t value);
extern unsigned long pcibios_bus_base(unsigned int bus);
extern void adjust_pci_device(struct pci_device *p);
static inline int
pci_read_config_byte(struct pci_device *dev, unsigned int where, uint8_t *value)
{
return pcibios_read_config_byte(dev->bus, dev->devfn, where, value);
}
static inline int
pci_write_config_byte(struct pci_device *dev, unsigned int where, uint8_t value)
{
return pcibios_write_config_byte(dev->bus, dev->devfn, where, value);
}
static inline int
pci_read_config_word(struct pci_device *dev, unsigned int where, uint16_t *value)
{
return pcibios_read_config_word(dev->bus, dev->devfn, where, value);
}
static inline int
pci_write_config_word(struct pci_device *dev, unsigned int where, uint16_t value)
{
return pcibios_write_config_word(dev->bus, dev->devfn, where, value);
}
static inline int
pci_read_config_dword(struct pci_device *dev, unsigned int where, uint32_t *value)
{
return pcibios_read_config_dword(dev->bus, dev->devfn, where, value);
}
static inline int
pci_write_config_dword(struct pci_device *dev, unsigned int where, uint32_t value)
{
return pcibios_write_config_dword(dev->bus, dev->devfn, where, value);
}
/* Helper functions to find the size of a pci bar */
extern unsigned long pci_bar_start(struct pci_device *dev, unsigned int bar);
extern unsigned long pci_bar_size(struct pci_device *dev, unsigned int bar);
/* Helper function to find pci capabilities */
extern int pci_find_capability(struct pci_device *dev, int cap);
/*
* An individual PCI device identified by vendor and device IDs
*
*/
struct pci_id {
unsigned short vendor, dev_id;
const char *name;
};
struct dev;
/* Most pci drivers will use this */
/*
* PCI_ROM is used to build up entries in a struct pci_id array. It
* is also parsed by parserom.pl to generate Makefile rules and files
* for rom-o-matic.
*/
#define PCI_ROM( rom_vendor, rom_dev_id, rom_name, rom_description ) { \
.vendor = rom_vendor, \
.dev_id = rom_dev_id, \
.name = rom_name, \
}
/*
* A PCI driver, with a device ID (struct pci_id) table and an
* optional class.
*
* Set the class to something other than PCI_NO_CLASS if the driver
* can handle an entire class of devices.
*
*/
struct pci_driver {
int type;
const char *name;
pci_probe_t probe;
struct pci_id *ids;
int id_count;
/* On a few occasions the hardware is standardized enough that
* we only need to know the class of the device and not the exact
* type to drive the device correctly. If this is the case
* set a class value other than 0.
*/
unsigned short class;
uint16_t class;
};
#define PCI_NO_CLASS 0
#define __pci_driver __attribute__ ((used,__section__(".drivers.pci")))
/* Defined by the linker... */
extern const struct pci_driver pci_drivers[];
extern const struct pci_driver pci_drivers_end[];
/*
* Define a PCI driver.
*
*/
#define PCI_DRIVER( driver_name, pci_ids, pci_class ) { \
.name = driver_name, \
.ids = pci_ids, \
.id_count = sizeof ( pci_ids ) / sizeof ( pci_ids[0] ), \
.class = pci_class, \
}
#define PCI_ROM(VENDOR_ID, DEVICE_ID, IMAGE, DESCRIPTION) \
{ VENDOR_ID, DEVICE_ID, IMAGE, }
/*
* These are the functions we expect pci_io.c to provide.
*
*/
extern int pci_read_config_byte ( struct pci_device *dev, unsigned int where,
uint8_t *value );
extern int pci_write_config_byte ( struct pci_device *dev, unsigned int where,
uint8_t value );
extern int pci_read_config_word ( struct pci_device *dev, unsigned int where,
uint16_t *value );
extern int pci_write_config_word ( struct pci_device *dev, unsigned int where,
uint16_t value );
extern int pci_read_config_dword ( struct pci_device *dev, unsigned int where,
uint32_t *value );
extern int pci_write_config_dword ( struct pci_device *dev, unsigned int where,
uint32_t value );
extern unsigned long pci_bus_base ( struct pci_device *dev );
/*
* Functions in pci.c
*
*/
extern void set_pci_device ( uint16_t busdevfn );
extern struct pci_device * find_pci_device ( struct pci_driver *driver,
struct dev *dev );
extern unsigned long pci_bar_start ( struct pci_device *pci,
unsigned int bar );
extern unsigned long pci_bar_size ( struct pci_device *pci, unsigned int bar );
extern int pci_find_capability ( struct pci_device *pci, int capability );
#endif /* PCI_H */