linux/include/drm/drm_pci.h

/*
 * Internal Header for the Direct Rendering Manager
 *
 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
 * Copyright (c) 2009-2010, Code Aurora Forum.
 * All rights reserved.
 *
 * Author: Rickard E. (Rik) Faith <faith@valinux.com>
 * Author: Gareth Hughes <gareth@valinux.com>
 *
 * 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 (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 NONINFRINGEMENT.  IN NO EVENT SHALL
 * VA LINUX SYSTEMS AND/OR ITS 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.
 */

#ifndef _DRM_PCI_H_
#define _DRM_PCI_H_

#include <linux/pci.h>

struct drm_dma_handle;
struct drm_device;
struct drm_driver;
struct drm_master;

struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size,
				     size_t align);
void drm_pci_free(struct drm_device *dev, struct drm_dma_handle * dmah);

int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
#ifdef CONFIG_PCI
int drm_get_pci_dev(struct pci_dev *pdev,
		    const struct pci_device_id *ent,
		    struct drm_driver *driver);
int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master);
#else
static inline int drm_get_pci_dev(struct pci_dev *pdev,
				  const struct pci_device_id *ent,
				  struct drm_driver *driver)
{
	return -ENOSYS;
}

static inline int drm_pci_set_busid(struct drm_device *dev,
				    struct drm_master *master)
{
	return -ENOSYS;
}
#endif

#define DRM_PCIE_SPEED_25 1
#define DRM_PCIE_SPEED_50 2
#define DRM_PCIE_SPEED_80 4

int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
int drm_pcie_get_max_link_width(struct drm_device *dev, u32 *mlw);

#endif /* _DRM_PCI_H_ */