LXR coreboot-v2/src/include/device/pci.h

   1/*
   2 *      PCI defines and function prototypes
   3 *      Copyright 1994, Drew Eckhardt
   4 *      Copyright 1997--1999 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
   5 *
   6 *      For more information, please consult the following manuals (look at
   7 *      http://www.pcisig.com/ for how to get them):
   8 *
   9 *      PCI BIOS Specification
  10 *      PCI Local Bus Specification
  11 *      PCI to PCI Bridge Specification
  12 *      PCI System Design Guide
  13 */
  14
  15#ifndef PCI_H
  16#define PCI_H
  17
  18#include <device/pci_def.h>
  19#include <device/resource.h>
  20#include <device/device.h>
  21#include <device/pci_ops.h>
  22#include <device/pci_rom.h>
  23
  24/* Common pci operations without a standard interface */
  25struct pci_operations {
  26        /* set the Subsystem IDs for the PCI device */
  27        void (*set_subsystem)(device_t dev, unsigned vendor, unsigned device);
  28};
  29
  30/* Common pci bus operations */
  31struct pci_bus_operations {
  32        uint8_t (*read8)   (struct bus *pbus, int bus, int devfn, int where);
  33        uint16_t (*read16) (struct bus *pbus, int bus, int devfn, int where);
  34        uint32_t (*read32) (struct bus *pbus, int bus, int devfn, int where);
  35        void (*write8)  (struct bus *pbus, int bus, int devfn, int where, uint8_t val);
  36        void (*write16) (struct bus *pbus, int bus, int devfn, int where, uint16_t val);
  37        void (*write32) (struct bus *pbus, int bus, int devfn, int where, uint32_t val);
  38};
  39
  40struct pci_driver {
  41        const struct device_operations *ops;
  42        unsigned short vendor;
  43        unsigned short device;
  44};
  45
  46#define __pci_driver __attribute__ ((used,__section__(".rodata.pci_driver")))
  47/** start of compile time generated pci driver array */
  48extern struct pci_driver pci_drivers[];
  49/** end of compile time generated pci driver array */
  50extern struct pci_driver epci_drivers[];
  51
  52
  53extern struct device_operations default_pci_ops_dev;
  54extern struct device_operations default_pci_ops_bus;
  55
  56void pci_dev_read_resources(device_t dev);
  57void pci_bus_read_resources(device_t dev);
  58void pci_dev_set_resources(device_t dev);
  59void pci_dev_enable_resources(device_t dev);
  60void pci_bus_enable_resources(device_t dev);
  61void pci_bus_reset(struct bus *bus);
  62device_t pci_probe_dev(device_t dev, struct bus *bus, unsigned devfn);
  63unsigned int do_pci_scan_bridge(device_t bus, unsigned int max,
  64        unsigned int (*do_scan_bus)(struct bus *bus, 
  65                unsigned min_devfn, unsigned max_devfn, unsigned int max));
  66unsigned int pci_scan_bridge(device_t bus, unsigned int max);
  67unsigned int pci_scan_bus(struct bus *bus, unsigned min_devfn, unsigned max_devfn, unsigned int max);
  68uint8_t pci_moving_config8(struct device *dev, unsigned reg);
  69uint16_t pci_moving_config16(struct device *dev, unsigned reg);
  70uint32_t pci_moving_config32(struct device *dev, unsigned reg);
  71unsigned pci_find_next_capability(device_t dev, unsigned cap, unsigned last);
  72unsigned pci_find_capability(device_t dev, unsigned cap);
  73struct resource *pci_get_resource(struct device *dev, unsigned long index);
  74void pci_dev_set_subsystem(device_t dev, unsigned vendor, unsigned device);
  75void pci_dev_init(struct device *dev);
  76
  77void pci_assign_irqs(unsigned bus, unsigned slot,
  78                     const unsigned char pIntAtoD[4]);
  79
  80#define PCI_IO_BRIDGE_ALIGN 4096
  81#define PCI_MEM_BRIDGE_ALIGN (1024*1024)
  82
  83static inline const struct pci_operations *ops_pci(device_t dev)
  84{
  85        const struct pci_operations *pops;
  86        pops = 0;
  87        if (dev && dev->ops) {
  88                pops = dev->ops->ops_pci;
  89        }
  90        return pops;
  91}
  92
  93static inline const struct pci_bus_operations *ops_pci_bus(struct bus *bus)
  94{
  95        const struct pci_bus_operations *bops;
  96        bops = 0;
  97        if (bus && bus->dev && bus->dev->ops) {
  98                bops = bus->dev->ops->ops_pci_bus;
  99        }
 100        if (!bops)
 101                bops = pci_remember_direct();
 102        return bops;
 103}
 104
 105#endif /* PCI_H */
 106