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/*
* This file is part of i915tool
*
* Copyright (C) 2012 The ChromiumOS Authors. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "video.h"
int find_idlist(struct drm_device *dev, u16 vendor, u16 device)
{
extern const struct pci_device_id pciidlist[];
int succ = 0;
int i;
for(i = 0; pciidlist[i].vendor && !succ; i++){
if (vendor == pciidlist[i].vendor && device ==
pciidlist[i].device){
dev->dev_private->info =
(void *)(pciidlist[i].driver_data);
succ = 1;
}
}
return succ;
}
/* there's only going to be one device ... */
int pci_dev_find(struct drm_device *dev)
{
struct pci_access *pacc = NULL;
struct pci_dev *temp;
int succ = 0;
pacc = pci_alloc();
if (! pacc)
return 0;
pci_init(pacc);
pci_scan_bus(pacc);
for (temp = pacc->devices; temp && ! dev->pdev; temp = temp->next){
if ((temp->device_class & 0xff00) == PCI_CLASS_DISPLAY_VGA ) {
pci_fill_info(temp, PCI_FILL_IDENT |
PCI_FILL_BASES | PCI_FILL_CLASS);
dev->pdev = temp;
}
}
if (dev->pdev)
succ = find_idlist(dev, dev->pdev->vendor_id,
dev->pdev->device_id);
return succ;
}
/* Support library for kernel style pci functions. We could do a semantic
* patch for it but this is easier to debug as we can fill it with prints
* if we want. And no cpp abuse here. Keep it simple.
*/
void pci_read_config_byte(struct pci_dev *dev, unsigned long offset, u8 *val)
{
*val = pci_read_byte(dev, offset);
}
void pci_write_config_byte(struct pci_dev *dev, unsigned long offset, u8 val)
{
pci_write_byte(dev, offset, val);
}
void pci_read_config_word(struct pci_dev *dev, unsigned long offset, u16 *val)
{
*val = pci_read_word(dev, offset);
}
void pci_write_config_word(struct pci_dev *dev, unsigned long offset, u16 val)
{
pci_write_word(dev, offset, val);
}
void pci_read_config_dword(struct pci_dev *dev, unsigned long offset, u32 *val)
{
*val = pci_read_long(dev, offset);
}
void pci_write_config_dword(struct pci_dev *dev, unsigned long offset, u32 val)
{
pci_write_long(dev, offset, val);
}
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