diff options
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/gpxe/pci.h | 219 |
1 files changed, 107 insertions, 112 deletions
diff --git a/src/include/gpxe/pci.h b/src/include/gpxe/pci.h index 4322202cc..28fa93c5f 100644 --- a/src/include/gpxe/pci.h +++ b/src/include/gpxe/pci.h @@ -1,18 +1,13 @@ -#ifndef _GPXEPCI_H -#define _GPXEPCI_H +#ifndef _GPXE_PCI_H +#define _GPXE_PCI_H /* -** Support for NE2000 PCI clones added David Monro June 1997 -** Generalised for other PCI NICs by Ken Yap July 1997 -** -** Most of this is taken from: -** -** /usr/src/linux/drivers/pci/pci.c -** /usr/src/linux/include/linux/pci.h -** /usr/src/linux/arch/i386/bios32.c -** /usr/src/linux/include/linux/bios32.h -** /usr/src/linux/drivers/net/ne.c -*/ + * Support for NE2000 PCI clones added David Monro June 1997 + * Generalised for other PCI NICs by Ken Yap July 1997 + * PCI support rewritten by Michael Brown 2006 + * + * Most of this is taken from /usr/src/linux/include/linux/pci.h. + */ /* * This program is free software; you can redistribute it and/or @@ -22,10 +17,10 @@ */ #include <stdint.h> +#include <gpxe/device.h> +#include <gpxe/tables.h> #include "pci_ids.h" -#define PCI_BUS_TYPE 1 - /* * PCI constants * @@ -87,18 +82,16 @@ #define PCI_BASE_ADDRESS_4 0x20 /* 32 bits */ #define PCI_BASE_ADDRESS_5 0x24 /* 32 bits */ -#define PCI_BASE_ADDRESS_MEM_TYPE_MASK 0x06 +#define PCI_BASE_ADDRESS_SPACE 0x01 /* 0 = memory, 1 = I/O */ +#define PCI_BASE_ADDRESS_SPACE_IO 0x01 +#define PCI_BASE_ADDRESS_SPACE_MEMORY 0x00 + +#define PCI_BASE_ADDRESS_MEM_TYPE_MASK 0x06 #define PCI_BASE_ADDRESS_MEM_TYPE_32 0x00 /* 32 bit address */ #define PCI_BASE_ADDRESS_MEM_TYPE_1M 0x02 /* Below 1M [obsolete] */ #define PCI_BASE_ADDRESS_MEM_TYPE_64 0x04 /* 64 bit address */ - -#ifndef PCI_BASE_ADDRESS_IO_MASK -#define PCI_BASE_ADDRESS_IO_MASK (~0x03) -#endif -#ifndef PCI_BASE_ADDRESS_MEM_MASK -#define PCI_BASE_ADDRESS_MEM_MASK (~0x0f) -#endif -#define PCI_BASE_ADDRESS_SPACE_IO 0x01 +#define PCI_BASE_ADDRESS_MEM_MASK (~0x0f) +#define PCI_BASE_ADDRESS_IO_MASK (~0x03) #define PCI_ROM_ADDRESS 0x30 /* 32 bits */ #define PCI_ROM_ADDRESS_ENABLE 0x01 /* Write 1 to enable ROM, bits 31..11 are address, @@ -234,90 +227,98 @@ #define PCI_MSI_ADDRESS_HI 8 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */ #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 */ -/* - * A location on a PCI bus - * - */ -struct pci_loc { - uint16_t busdevfn; + +/** A PCI device ID list entry */ +struct pci_device_id { + /** Name */ + const char *name; + /** PCI vendor ID */ + uint16_t vendor; + /** PCI device ID */ + uint16_t device; }; -/* - * A physical PCI device - * - */ +/** A PCI device */ struct pci_device { - const char * name; - uint32_t membase; /* BAR 1 */ - uint32_t ioaddr; /* first IO BAR */ - uint16_t vendor_id, device_id; - uint16_t class; - uint16_t busdevfn; - uint8_t revision; - uint8_t irq; + /** Generic device */ + struct device dev; + /** Memory base + * + * This is the physical address of the first valid memory BAR. + */ + unsigned long membase; + /** + * I/O address + * + * This is the physical address of the first valid I/O BAR. + */ + unsigned long ioaddr; + /** Vendor ID */ + uint16_t vendor; + /** Device ID */ + uint16_t device; + /** Device class */ + uint32_t class; + /** Interrupt number */ + uint8_t irq; + /** Bus number */ + uint8_t bus; + /** Device and function number */ + uint8_t devfn; + /** Driver for this device */ + struct pci_driver *driver; + /** Driver-private data + * + * Use pci_set_drvdata() and pci_get_drvdata() to access this + * field. + */ void *priv; + /** Device name */ + const char *name; }; -/* - * Useful busdevfn calculations - * - */ -#define PCI_BUS(busdevfn) ( ( uint8_t ) ( ( (busdevfn) >> 8 ) & 0xff ) ) -#define PCI_DEV(busdevfn) ( ( uint8_t ) ( ( (busdevfn) >> 3 ) & 0x1f ) ) -#define PCI_FUNC(busdevfn) ( ( uint8_t ) ( (busdevfn) & 0x07 ) ) -#define PCI_FN0(busdevfn) ( ( uint16_t ) ( (busdevfn) & 0xfff8 ) ) -#define PCI_MAX_BUSDEVFN 0xffff - -/* - * An individual PCI device identified by vendor and device IDs - * - */ -struct pci_id { - unsigned short vendor_id, device_id; - const char *name; +/** A PCI driver */ +struct pci_driver { + /** PCI ID table */ + struct pci_device_id *ids; + /** Number of entries in PCI ID table */ + unsigned int id_count; + /** + * Probe device + * + * @v pci PCI device + * @v id Matching entry in ID table + * @ret rc Return status code + */ + int ( * probe ) ( struct pci_device *pci, + const struct pci_device_id *id ); + /** + * Remove device + * + * @v pci PCI device + */ + void ( * remove ) ( struct pci_device *pci ); }; +/** Declare a PCI driver */ +#define __pci_driver __table ( pci_drivers, 01 ) + +#define PCI_DEVFN( slot, func ) ( ( (slot) << 3 ) | (func) ) +#define PCI_SLOT( devfn ) ( ( (devfn) >> 3 ) & 0x1f ) +#define PCI_FUNC( devfn ) ( (devfn) & 0x07 ) + /* * 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( _vendor_id, _device_id, _name, _description ) { \ - .vendor_id = _vendor_id, \ - .device_id = _device_id, \ - .name = _name, \ +#define PCI_ROM( _vendor, _device, _name, _description ) { \ + .vendor = _vendor, \ + .device = _device, \ + .name = _name, \ } -/* - * A PCI driver information table, 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 { - struct pci_id *ids; - unsigned int id_count; - uint16_t class; -}; -#define PCI_NO_CLASS 0 - -/* - * Define a PCI driver. - * - */ -#define PCI_DRIVER( _name, _ids, _class ) \ - static struct pci_driver _name = { \ - .ids = _ids, \ - .id_count = sizeof ( _ids ) / sizeof ( _ids[0] ), \ - .class = _class, \ - } - -/* - * These are the functions we expect pci_io.c to provide. - * - */ +extern unsigned int pci_max_bus; extern int pci_read_config_byte ( struct pci_device *pci, unsigned int where, uint8_t *value ); extern int pci_write_config_byte ( struct pci_device *pci, unsigned int where, @@ -330,35 +331,29 @@ extern int pci_read_config_dword ( struct pci_device *pci, unsigned int where, uint32_t *value ); extern int pci_write_config_dword ( struct pci_device *pci, unsigned int where, uint32_t value ); -extern unsigned long pci_bus_base ( struct pci_device *pci ); - -/* - * pci_io.c is allowed to overwrite pci_max_bus if it knows what the - * highest bus in the system will be. - * - */ -extern unsigned int pci_max_bus; - -/* - * Functions in pci.c - * - */ extern void adjust_pci_device ( struct pci_device *pci ); 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 ); + unsigned int reg ); extern int pci_find_capability ( struct pci_device *pci, int capability ); +extern __attribute__ (( deprecated )) unsigned long +pci_bar_size ( struct pci_device *pci, unsigned int reg ); -/* - * PCI bus global definition +/** + * Set PCI driver-private data * + * @v pci PCI device + * @v priv Private data */ -extern struct bus_driver pci_driver; - static inline void pci_set_drvdata ( struct pci_device *pci, void *priv ) { pci->priv = priv; } +/** + * Get PCI driver-private data + * + * @v pci PCI device + * @ret priv Private data + */ static inline void * pci_get_drvdata ( struct pci_device *pci ) { return pci->priv; } |