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237 lines
7.4 KiB
237 lines
7.4 KiB
#ifndef __DRM_DRM_LEGACY_H__ |
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#define __DRM_DRM_LEGACY_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 <[email protected]> |
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* |
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* Author: Rickard E. (Rik) Faith <[email protected]> |
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* Author: Gareth Hughes <[email protected]> |
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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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#include <drm/drm.h> |
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#include <drm/drm_auth.h> |
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#include <drm/drm_hashtab.h> |
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struct drm_device; |
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struct drm_driver; |
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struct file; |
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struct pci_driver; |
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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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dma_addr_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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struct drm_local_map *drm_legacy_findmap(struct drm_device *dev, unsigned int token); |
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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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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 */ |
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#ifdef CONFIG_PCI |
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struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size, |
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size_t align); |
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void drm_pci_free(struct drm_device *dev, struct drm_dma_handle *dmah); |
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int drm_legacy_pci_init(const struct drm_driver *driver, |
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struct pci_driver *pdriver); |
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void drm_legacy_pci_exit(const struct drm_driver *driver, |
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struct pci_driver *pdriver); |
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#else |
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static inline struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, |
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size_t size, size_t align) |
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{ |
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return NULL; |
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} |
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static inline void drm_pci_free(struct drm_device *dev, |
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struct drm_dma_handle *dmah) |
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{ |
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} |
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static inline int drm_legacy_pci_init(const struct drm_driver *driver, |
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struct pci_driver *pdriver) |
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{ |
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return -EINVAL; |
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} |
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static inline void drm_legacy_pci_exit(const struct drm_driver *driver, |
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struct pci_driver *pdriver) |
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{ |
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} |
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#endif |
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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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#endif /* __DRM_DRM_LEGACY_H__ */
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