98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
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/*
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* This file is part of i915tool
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*
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* Copyright (C) 2012 The ChromiumOS Authors. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "video.h"
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int find_idlist(struct drm_device *dev, u16 vendor, u16 device)
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{
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extern const struct pci_device_id pciidlist[];
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int succ = 0;
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int i;
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for(i = 0; pciidlist[i].vendor && !succ; i++){
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if (vendor == pciidlist[i].vendor && device ==
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pciidlist[i].device){
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dev->dev_private->info =
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(void *)(pciidlist[i].driver_data);
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succ = 1;
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}
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}
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return succ;
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}
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/* there's only going to be one device ... */
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int pci_dev_find(struct drm_device *dev)
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{
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struct pci_access *pacc = NULL;
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struct pci_dev *temp;
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int succ = 0;
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pacc = pci_alloc();
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if (! pacc)
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return 0;
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pci_init(pacc);
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pci_scan_bus(pacc);
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for (temp = pacc->devices; temp && ! dev->pdev; temp = temp->next){
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if ((temp->device_class & 0xff00) == PCI_CLASS_DISPLAY_VGA ) {
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pci_fill_info(temp, PCI_FILL_IDENT |
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PCI_FILL_BASES | PCI_FILL_CLASS);
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dev->pdev = temp;
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}
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}
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if (dev->pdev)
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succ = find_idlist(dev, dev->pdev->vendor_id,
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dev->pdev->device_id);
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return succ;
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}
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/* Support library for kernel style pci functions. We could do a semantic
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* patch for it but this is easier to debug as we can fill it with prints
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* if we want. And no cpp abuse here. Keep it simple.
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*/
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void pci_read_config_byte(struct pci_dev *dev, unsigned long offset, u8 *val)
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{
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*val = pci_read_byte(dev, offset);
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}
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void pci_write_config_byte(struct pci_dev *dev, unsigned long offset, u8 val)
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{
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pci_write_byte(dev, offset, val);
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}
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void pci_read_config_word(struct pci_dev *dev, unsigned long offset, u16 *val)
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{
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*val = pci_read_word(dev, offset);
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}
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void pci_write_config_word(struct pci_dev *dev, unsigned long offset, u16 val)
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{
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pci_write_word(dev, offset, val);
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}
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void pci_read_config_dword(struct pci_dev *dev, unsigned long offset, u32 *val)
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{
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*val = pci_read_long(dev, offset);
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}
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void pci_write_config_dword(struct pci_dev *dev, unsigned long offset, u32 val)
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{
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pci_write_long(dev, offset, val);
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}
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