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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2016 Google Inc
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <stdio.h>
#include <pci/pci.h>
#include "pci-userspace.h"
#define DEBUG_PCI 1
static struct pci_access *pacc;
int pci_initialize(void)
{
struct pci_dev *dev;
pacc = pci_alloc();
pci_init(pacc);
pci_scan_bus(pacc);
for (dev = pacc->devices; dev; dev = dev->next) {
pci_fill_info(dev, PCI_FILL_IDENT | PCI_FILL_BASES);
}
return 0;
}
int pci_exit(void)
{
pci_cleanup(pacc);
return 0;
}
u8 pci_read_config8(struct device *dev, unsigned int where)
{
struct pci_dev *d;
if ((d = pci_get_dev(pacc, 0, dev->busno, dev->slot, dev->func)))
return pci_read_byte(d, where);
#ifdef DEBUG_PCI
printf("PCI: device not found while read byte (%x:%x.%x)\n",
dev->busno, dev->slot, dev->func);
#endif
return 0;
}
u16 pci_read_config16(struct device *dev, unsigned int where)
{
struct pci_dev *d;
if ((d = pci_get_dev(pacc, 0, dev->busno, dev->slot, dev->func)))
return pci_read_word(d, where);
#ifdef DEBUG_PCI
printf("PCI: device not found while read word (%x:%x.%x)\n",
dev->busno, dev->slot, dev->func);
#endif
return 0;
}
u32 pci_read_config32(struct device *dev, unsigned int where)
{
struct pci_dev *d;
if ((d = pci_get_dev(pacc, 0, dev->busno, dev->slot, dev->func)))
return pci_read_long(d, where);
#ifdef DEBUG_PCI
printf("PCI: device not found while read dword (%x:%x.%x)\n",
dev->busno, dev->slot, dev->func);
#endif
return 0;
}
void pci_write_config8(struct device *dev, unsigned int where, u8 val)
{
struct pci_dev *d;
if ((d = pci_get_dev(pacc, 0, dev->busno, dev->slot, dev->func)))
pci_write_byte(d, where, val);
#ifdef DEBUG_PCI
else
printf("PCI: device not found while write byte (%x:%x.%x)\n",
dev->busno, dev->slot, dev->func);
#endif
}
void pci_write_config16(struct device *dev, unsigned int where, u16 val)
{
struct pci_dev *d;
if ((d = pci_get_dev(pacc, 0, dev->busno, dev->slot, dev->func)))
pci_write_word(d, where, val);
#ifdef DEBUG_PCI
else
printf("PCI: device not found while write word (%x:%x.%x)\n",
dev->busno, dev->slot, dev->func);
#endif
}
void pci_write_config32(struct device *dev, unsigned int where, u32 val)
{
struct pci_dev *d;
if ((d = pci_get_dev(pacc, 0, dev->busno, dev->slot, dev->func)))
pci_write_long(d, where, val);
#ifdef DEBUG_PCI
else
printf("PCI: device not found while write dword (%x:%x.%x)\n",
dev->busno, dev->slot, dev->func);
#endif
}
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