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편집 파일: drm_legacy.h

#ifndef __DRM_DRM_LEGACY_H__ #define __DRM_DRM_LEGACY_H__ /* * Legacy driver interfaces 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. * Copyright © 2014 Intel Corporation * Daniel Vetter <daniel.vetter@ffwll.ch> * * 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. */ #include <linux/agp_backend.h> #include <drm/drm.h> #include <drm/drm_auth.h> struct drm_device; struct drm_driver; struct file; struct pci_driver; /* * Legacy Support for palateontologic DRM drivers * * If you add a new driver and it uses any of these functions or structures, * you're doing it terribly wrong. */ /* * Hash-table Support */ struct drm_hash_item { struct hlist_node head; unsigned long key; }; struct drm_open_hash { struct hlist_head *table; u8 order; }; /** * DMA buffer. */ struct drm_buf { int idx; /**< Index into master buflist */ int total; /**< Buffer size */ int order; /**< log-base-2(total) */ int used; /**< Amount of buffer in use (for DMA) */ unsigned long offset; /**< Byte offset (used internally) */ void *address; /**< Address of buffer */ unsigned long bus_address; /**< Bus address of buffer */ struct drm_buf *next; /**< Kernel-only: used for free list */ __volatile__ int waiting; /**< On kernel DMA queue */ __volatile__ int pending; /**< On hardware DMA queue */ struct drm_file *file_priv; /**< Private of holding file descr */ int context; /**< Kernel queue for this buffer */ int while_locked; /**< Dispatch this buffer while locked */ enum { DRM_LIST_NONE = 0, DRM_LIST_FREE = 1, DRM_LIST_WAIT = 2, DRM_LIST_PEND = 3, DRM_LIST_PRIO = 4, DRM_LIST_RECLAIM = 5 } list; /**< Which list we're on */ int dev_priv_size; /**< Size of buffer private storage */ void *dev_private; /**< Per-buffer private storage */ }; typedef struct drm_dma_handle { dma_addr_t busaddr; void *vaddr; size_t size; } drm_dma_handle_t; /** * Buffer entry. There is one of this for each buffer size order. */ struct drm_buf_entry { int buf_size; /**< size */ int buf_count; /**< number of buffers */ struct drm_buf *buflist; /**< buffer list */ int seg_count; int page_order; struct drm_dma_handle **seglist; int low_mark; /**< Low water mark */ int high_mark; /**< High water mark */ }; /** * DMA data. */ struct drm_device_dma { struct drm_buf_entry bufs[DRM_MAX_ORDER + 1]; /**< buffers, grouped by their size order */ int buf_count; /**< total number of buffers */ struct drm_buf **buflist; /**< Vector of pointers into drm_device_dma::bufs */ int seg_count; int page_count; /**< number of pages */ unsigned long *pagelist; /**< page list */ unsigned long byte_count; enum { _DRM_DMA_USE_AGP = 0x01, _DRM_DMA_USE_SG = 0x02, _DRM_DMA_USE_FB = 0x04, _DRM_DMA_USE_PCI_RO = 0x08 } flags; }; /** * Scatter-gather memory. */ struct drm_sg_mem { unsigned long handle; void *virtual; int pages; struct page **pagelist; dma_addr_t *busaddr; }; /** * Kernel side of a mapping */ struct drm_local_map { dma_addr_t offset; /**< Requested physical address (0 for SAREA)*/ unsigned long size; /**< Requested physical size (bytes) */ enum drm_map_type type; /**< Type of memory to map */ enum drm_map_flags flags; /**< Flags */ void *handle; /**< User-space: "Handle" to pass to mmap() */ /**< Kernel-space: kernel-virtual address */ int mtrr; /**< MTRR slot used */ }; typedef struct drm_local_map drm_local_map_t; /** * Mappings list */ struct drm_map_list { struct list_head head; /**< list head */ struct drm_hash_item hash; struct drm_local_map *map; /**< mapping */ uint64_t user_token; struct drm_master *master; }; int drm_legacy_addmap(struct drm_device *d, resource_size_t offset, unsigned int size, enum drm_map_type type, enum drm_map_flags flags, struct drm_local_map **map_p); struct drm_local_map *drm_legacy_findmap(struct drm_device *dev, unsigned int token); void drm_legacy_rmmap(struct drm_device *d, struct drm_local_map *map); int drm_legacy_rmmap_locked(struct drm_device *d, struct drm_local_map *map); struct drm_local_map *drm_legacy_getsarea(struct drm_device *dev); int drm_legacy_mmap(struct file *filp, struct vm_area_struct *vma); int drm_legacy_addbufs_agp(struct drm_device *d, struct drm_buf_desc *req); int drm_legacy_addbufs_pci(struct drm_device *d, struct drm_buf_desc *req); /** * Test that the hardware lock is held by the caller, returning otherwise. * * \param dev DRM device. * \param filp file pointer of the caller. */ #define LOCK_TEST_WITH_RETURN( dev, _file_priv ) \ do { \ if (!_DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock) || \ _file_priv->master->lock.file_priv != _file_priv) { \ DRM_ERROR( "%s called without lock held, held %d owner %p %p\n",\ __func__, _DRM_LOCK_IS_HELD(_file_priv->master->lock.hw_lock->lock),\ _file_priv->master->lock.file_priv, _file_priv); \ return -EINVAL; \ } \ } while (0) void drm_legacy_idlelock_take(struct drm_lock_data *lock); void drm_legacy_idlelock_release(struct drm_lock_data *lock); /* drm_irq.c */ int drm_legacy_irq_uninstall(struct drm_device *dev); /* drm_pci.c */ #ifdef CONFIG_PCI int drm_legacy_pci_init(const struct drm_driver *driver, struct pci_driver *pdriver); void drm_legacy_pci_exit(const struct drm_driver *driver, struct pci_driver *pdriver); #else static inline struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size, size_t align) { return NULL; } static inline void drm_pci_free(struct drm_device *dev, struct drm_dma_handle *dmah) { } static inline int drm_legacy_pci_init(const struct drm_driver *driver, struct pci_driver *pdriver) { return -EINVAL; } static inline void drm_legacy_pci_exit(const struct drm_driver *driver, struct pci_driver *pdriver) { } #endif /* * AGP Support */ struct drm_agp_head { struct agp_kern_info agp_info; struct list_head memory; unsigned long mode; struct agp_bridge_data *bridge; int enabled; int acquired; unsigned long base; int agp_mtrr; int cant_use_aperture; unsigned long page_mask; }; #if IS_ENABLED(CONFIG_DRM_LEGACY) && IS_ENABLED(CONFIG_AGP) struct drm_agp_head *drm_legacy_agp_init(struct drm_device *dev); int drm_legacy_agp_acquire(struct drm_device *dev); int drm_legacy_agp_release(struct drm_device *dev); int drm_legacy_agp_enable(struct drm_device *dev, struct drm_agp_mode mode); int drm_legacy_agp_info(struct drm_device *dev, struct drm_agp_info *info); int drm_legacy_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request); int drm_legacy_agp_free(struct drm_device *dev, struct drm_agp_buffer *request); int drm_legacy_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request); int drm_legacy_agp_bind(struct drm_device *dev, struct drm_agp_binding *request); #else static inline struct drm_agp_head *drm_legacy_agp_init(struct drm_device *dev) { return NULL; } static inline int drm_legacy_agp_acquire(struct drm_device *dev) { return -ENODEV; } static inline int drm_legacy_agp_release(struct drm_device *dev) { return -ENODEV; } static inline int drm_legacy_agp_enable(struct drm_device *dev, struct drm_agp_mode mode) { return -ENODEV; } static inline int drm_legacy_agp_info(struct drm_device *dev, struct drm_agp_info *info) { return -ENODEV; } static inline int drm_legacy_agp_alloc(struct drm_device *dev, struct drm_agp_buffer *request) { return -ENODEV; } static inline int drm_legacy_agp_free(struct drm_device *dev, struct drm_agp_buffer *request) { return -ENODEV; } static inline int drm_legacy_agp_unbind(struct drm_device *dev, struct drm_agp_binding *request) { return -ENODEV; } static inline int drm_legacy_agp_bind(struct drm_device *dev, struct drm_agp_binding *request) { return -ENODEV; } #endif /* drm_memory.c */ void drm_legacy_ioremap(struct drm_local_map *map, struct drm_device *dev); void drm_legacy_ioremap_wc(struct drm_local_map *map, struct drm_device *dev); void drm_legacy_ioremapfree(struct drm_local_map *map, struct drm_device *dev); #endif /* __DRM_DRM_LEGACY_H__ */