include/drm/drm_pci.h

   1 /*
   2  * Internal Header for the Direct Rendering Manager
   3  *
   4  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
   5  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   6  * Copyright (c) 2009-2010, Code Aurora Forum.
   7  * All rights reserved.
   8  *
   9  * Author: Rickard E. (Rik) Faith <faith@valinux.com>
  10  * Author: Gareth Hughes <gareth@valinux.com>
  11  *
  12  * Permission is hereby granted, free of charge, to any person obtaining a
  13  * copy of this software and associated documentation files (the "Software"),
  14  * to deal in the Software without restriction, including without limitation
  15  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  16  * and/or sell copies of the Software, and to permit persons to whom the
  17  * Software is furnished to do so, subject to the following conditions:
  18  *
  19  * The above copyright notice and this permission notice (including the next
  20  * paragraph) shall be included in all copies or substantial portions of the
  21  * Software.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  24  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  25  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  26  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  27  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  28  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  29  * OTHER DEALINGS IN THE SOFTWARE.
  30  */
  31
  32 #ifndef _DRM_PCI_H_
  33 #define _DRM_PCI_H_
  34
  35 #include <linux/pci.h>
  36
  37 struct drm_dma_handle;
  38 struct drm_device;
  39 struct drm_driver;
  40 struct drm_master;
  41
  42 struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size,
  43                                      size_t align);
  44 void drm_pci_free(struct drm_device *dev, struct drm_dma_handle * dmah);
  45
  46 int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
  47 void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
  48 #ifdef CONFIG_PCI
  49 int drm_get_pci_dev(struct pci_dev *pdev,
  50                     const struct pci_device_id *ent,
  51                     struct drm_driver *driver);
  52 int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master);
  53 #else
  54 static inline int drm_get_pci_dev(struct pci_dev *pdev,
  55                                   const struct pci_device_id *ent,
  56                                   struct drm_driver *driver)
  57 {
  58         return -ENOSYS;
  59 }
  60
  61 static inline int drm_pci_set_busid(struct drm_device *dev,
  62                                     struct drm_master *master)
  63 {
  64         return -ENOSYS;
  65 }
  66 #endif
  67
  68 #define DRM_PCIE_SPEED_25 1
  69 #define DRM_PCIE_SPEED_50 2
  70 #define DRM_PCIE_SPEED_80 4
  71
  72 int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
  73 int drm_pcie_get_max_link_width(struct drm_device *dev, u32 *mlw);
  74
  75 #endif /* _DRM_PCI_H_ */