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/*
* (C) Copyright IBM Corporation 2006
* Copyright 2009 Red Hat, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, and/or sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
/*
* Copyright (c) 2007 Paulo R. Zanoni, Tiago Vignatti
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
*/
/*
* PCI access general header.
*
* Following code is borrowed from libpciaccess:
* https://cgit.freedesktop.org/xorg/lib/libpciaccess/
*/
#ifndef PCI_ACCESS_H
#define PCI_ACCESS_H
#include <stddef.h>
#include <stdint.h>
#include <errno.h>
typedef uint64_t pciaddr_t;
/*
* BAR descriptor for a PCI device.
*/
struct pci_mem_region
{
/*
* When the region is mapped, this is the pointer to the memory.
*/
void *memory;
/*
* Base physical address of the region from the CPU's point of view.
*
* This address is typically passed to \c pci_device_map_range to create
* a mapping of the region to the CPU's virtual address space.
*/
pciaddr_t base_addr;
/*
* Size, in bytes, of the region.
*/
pciaddr_t size;
/*
* Is the region I/O ports or memory?
*/
unsigned is_IO:1;
/*
* Is the memory region prefetchable?
*
* \note
* This can only be set if \c is_IO is not set.
*/
unsigned is_prefetchable:1;
/*
* Is the memory at a 64-bit address?
*
* \note
* This can only be set if \c is_IO is not set.
*/
unsigned is_64:1;
};
/*
* PCI device.
*
* Contains all of the information about a particular PCI device.
*/
struct pci_device
{
/*
* Complete bus identification, including domain, of the device. On
* platforms that do not support PCI domains (e.g., 32-bit x86 hardware),
* the domain will always be zero.
*/
uint16_t domain;
uint8_t bus;
uint8_t dev;
uint8_t func;
/*
* Device's class, subclass, and programming interface packed into a
* single 32-bit value. The class is at bits [23:16], subclass is at
* bits [15:8], and programming interface is at [7:0].
*/
uint32_t device_class;
/*
* BAR descriptors for the device.
*/
struct pci_mem_region regions[6];
/*
* Size, in bytes, of the device's expansion ROM.
*/
pciaddr_t rom_size;
/*
* Physical address of the ROM
*/
pciaddr_t rom_base;
/*
* Mapped ROM
*/
void *rom_memory;
/*
* Size of the configuration space
*/
size_t config_size;
};
typedef error_t (*pci_io_op_t) (unsigned bus, unsigned dev, unsigned func,
pciaddr_t reg, void *data, unsigned size);
typedef error_t (*pci_refresh_dev_op_t) (struct pci_device * dev,
int num_region, int rom);
/* Global PCI data */
struct pci_system
{
size_t num_devices;
struct pci_device *devices;
/* Callbacks */
pci_io_op_t read;
pci_io_op_t write;
pci_refresh_dev_op_t device_refresh;
};
struct pci_system *pci_sys;
int pci_system_init (void);
#endif /* PCI_ACCESS_H */
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