208 строки
6.8 KiB
C
208 строки
6.8 KiB
C
#ifndef __DRM_DRM_LEGACY_H__
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#define __DRM_DRM_LEGACY_H__
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#include <drm/drm_auth.h>
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/*
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* Legacy driver interfaces for the Direct Rendering Manager
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*
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* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
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* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
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* Copyright (c) 2009-2010, Code Aurora Forum.
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* All rights reserved.
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* Copyright © 2014 Intel Corporation
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* Daniel Vetter <daniel.vetter@ffwll.ch>
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*
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* Author: Rickard E. (Rik) Faith <faith@valinux.com>
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* Author: Gareth Hughes <gareth@valinux.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* Legacy Support for palateontologic DRM drivers
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*
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* If you add a new driver and it uses any of these functions or structures,
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* you're doing it terribly wrong.
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*/
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/**
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* DMA buffer.
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*/
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struct drm_buf {
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int idx; /**< Index into master buflist */
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int total; /**< Buffer size */
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int order; /**< log-base-2(total) */
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int used; /**< Amount of buffer in use (for DMA) */
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unsigned long offset; /**< Byte offset (used internally) */
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void *address; /**< Address of buffer */
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unsigned long bus_address; /**< Bus address of buffer */
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struct drm_buf *next; /**< Kernel-only: used for free list */
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__volatile__ int waiting; /**< On kernel DMA queue */
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__volatile__ int pending; /**< On hardware DMA queue */
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struct drm_file *file_priv; /**< Private of holding file descr */
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int context; /**< Kernel queue for this buffer */
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int while_locked; /**< Dispatch this buffer while locked */
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enum {
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DRM_LIST_NONE = 0,
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DRM_LIST_FREE = 1,
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DRM_LIST_WAIT = 2,
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DRM_LIST_PEND = 3,
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DRM_LIST_PRIO = 4,
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DRM_LIST_RECLAIM = 5
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} list; /**< Which list we're on */
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int dev_priv_size; /**< Size of buffer private storage */
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void *dev_private; /**< Per-buffer private storage */
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};
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typedef struct drm_dma_handle {
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dma_addr_t busaddr;
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void *vaddr;
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size_t size;
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} drm_dma_handle_t;
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/**
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* Buffer entry. There is one of this for each buffer size order.
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*/
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struct drm_buf_entry {
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int buf_size; /**< size */
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int buf_count; /**< number of buffers */
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struct drm_buf *buflist; /**< buffer list */
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int seg_count;
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int page_order;
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struct drm_dma_handle **seglist;
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int low_mark; /**< Low water mark */
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int high_mark; /**< High water mark */
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};
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/**
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* DMA data.
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*/
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struct drm_device_dma {
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struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */
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int buf_count; /**< total number of buffers */
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struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */
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int seg_count;
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int page_count; /**< number of pages */
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unsigned long *pagelist; /**< page list */
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unsigned long byte_count;
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enum {
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_DRM_DMA_USE_AGP = 0x01,
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_DRM_DMA_USE_SG = 0x02,
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_DRM_DMA_USE_FB = 0x04,
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_DRM_DMA_USE_PCI_RO = 0x08
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} flags;
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};
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/**
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* Scatter-gather memory.
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*/
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struct drm_sg_mem {
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unsigned long handle;
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void *virtual;
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int pages;
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struct page **pagelist;
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dma_addr_t *busaddr;
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};
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/**
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* Kernel side of a mapping
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*/
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struct drm_local_map {
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resource_size_t offset; /**< Requested physical address (0 for SAREA)*/
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unsigned long size; /**< Requested physical size (bytes) */
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enum drm_map_type type; /**< Type of memory to map */
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enum drm_map_flags flags; /**< Flags */
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void *handle; /**< User-space: "Handle" to pass to mmap() */
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/**< Kernel-space: kernel-virtual address */
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int mtrr; /**< MTRR slot used */
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};
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typedef struct drm_local_map drm_local_map_t;
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/**
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* Mappings list
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*/
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struct drm_map_list {
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struct list_head head; /**< list head */
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struct drm_hash_item hash;
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struct drm_local_map *map; /**< mapping */
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uint64_t user_token;
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struct drm_master *master;
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};
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int drm_legacy_addmap(struct drm_device *d, resource_size_t offset,
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unsigned int size, enum drm_map_type type,
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enum drm_map_flags flags, struct drm_local_map **map_p);
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void drm_legacy_rmmap(struct drm_device *d, struct drm_local_map *map);
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int drm_legacy_rmmap_locked(struct drm_device *d, struct drm_local_map *map);
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void drm_legacy_master_rmmaps(struct drm_device *dev,
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struct drm_master *master);
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struct drm_local_map *drm_legacy_getsarea(struct drm_device *dev);
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int drm_legacy_mmap(struct file *filp, struct vm_area_struct *vma);
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int drm_legacy_addbufs_agp(struct drm_device *d, struct drm_buf_desc *req);
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int drm_legacy_addbufs_pci(struct drm_device *d, struct drm_buf_desc *req);
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/**
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* Test that the hardware lock is held by the caller, returning otherwise.
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*
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* \param dev DRM device.
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* \param filp file pointer of the caller.
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*/
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#define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \
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do { \
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if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \
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_file_priv->master->lock.file_priv != _file_priv) { \
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DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\
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__func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\
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_file_priv->master->lock.file_priv, _file_priv); \
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return -EINVAL; \
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} \
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} while (0)
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void drm_legacy_idlelock_take(struct drm_lock_data *lock);
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void drm_legacy_idlelock_release(struct drm_lock_data *lock);
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/* drm_pci.c dma alloc wrappers */
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void __drm_legacy_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
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/* drm_memory.c */
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void drm_legacy_ioremap(struct drm_local_map *map, struct drm_device *dev);
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void drm_legacy_ioremap_wc(struct drm_local_map *map, struct drm_device *dev);
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void drm_legacy_ioremapfree(struct drm_local_map *map, struct drm_device *dev);
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static inline struct drm_local_map *drm_legacy_findmap(struct drm_device *dev,
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unsigned int token)
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{
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struct drm_map_list *_entry;
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list_for_each_entry(_entry, &dev->maplist, head)
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if (_entry->user_token == token)
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return _entry->map;
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return NULL;
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}
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#endif /* __DRM_DRM_LEGACY_H__ */
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