653 lines
22 KiB
C
653 lines
22 KiB
C
/**************************************************************************
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*
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* Copyright (c) 2006-2007 Tungsten Graphics, Inc., Cedar Park, TX., USA
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* All Rights Reserved.
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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
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/*
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* Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
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*/
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#ifndef _DRM_OBJECTS_H
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#define _DRM_OBJECTS_H
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struct drm_device;
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struct drm_bo_mem_reg;
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/***************************************************
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* User space objects. (drm_object.c)
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*/
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#define drm_user_object_entry(_ptr, _type, _member) container_of(_ptr, _type, _member)
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enum drm_object_type {
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drm_fence_type,
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drm_buffer_type,
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drm_lock_type,
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/*
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* Add other user space object types here.
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*/
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drm_driver_type0 = 256,
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drm_driver_type1,
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drm_driver_type2,
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drm_driver_type3,
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drm_driver_type4
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};
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/*
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* A user object is a structure that helps the drm give out user handles
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* to kernel internal objects and to keep track of these objects so that
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* they can be destroyed, for example when the user space process exits.
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* Designed to be accessible using a user space 32-bit handle.
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*/
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struct drm_user_object {
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struct drm_hash_item hash;
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struct list_head list;
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enum drm_object_type type;
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atomic_t refcount;
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int shareable;
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struct drm_file *owner;
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void (*ref_struct_locked) (struct drm_file * priv,
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struct drm_user_object * obj,
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enum drm_ref_type ref_action);
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void (*unref) (struct drm_file * priv, struct drm_user_object * obj,
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enum drm_ref_type unref_action);
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void (*remove) (struct drm_file * priv, struct drm_user_object * obj);
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};
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/*
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* A ref object is a structure which is used to
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* keep track of references to user objects and to keep track of these
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* references so that they can be destroyed for example when the user space
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* process exits. Designed to be accessible using a pointer to the _user_ object.
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*/
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struct drm_ref_object {
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struct drm_hash_item hash;
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struct list_head list;
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atomic_t refcount;
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enum drm_ref_type unref_action;
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};
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/**
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* Must be called with the struct_mutex held.
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*/
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extern int drm_add_user_object(struct drm_file * priv, struct drm_user_object * item,
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int shareable);
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/**
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* Must be called with the struct_mutex held.
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*/
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extern struct drm_user_object *drm_lookup_user_object(struct drm_file * priv,
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uint32_t key);
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/*
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* Must be called with the struct_mutex held. May temporarily release it.
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*/
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extern int drm_add_ref_object(struct drm_file * priv,
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struct drm_user_object * referenced_object,
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enum drm_ref_type ref_action);
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/*
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* Must be called with the struct_mutex held.
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*/
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struct drm_ref_object *drm_lookup_ref_object(struct drm_file * priv,
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struct drm_user_object * referenced_object,
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enum drm_ref_type ref_action);
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/*
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* Must be called with the struct_mutex held.
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* If "item" has been obtained by a call to drm_lookup_ref_object. You may not
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* release the struct_mutex before calling drm_remove_ref_object.
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* This function may temporarily release the struct_mutex.
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*/
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extern void drm_remove_ref_object(struct drm_file * priv, struct drm_ref_object * item);
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extern int drm_user_object_ref(struct drm_file * priv, uint32_t user_token,
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enum drm_object_type type,
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struct drm_user_object ** object);
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extern int drm_user_object_unref(struct drm_file * priv, uint32_t user_token,
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enum drm_object_type type);
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/***************************************************
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* Fence objects. (drm_fence.c)
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*/
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struct drm_fence_object {
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struct drm_user_object base;
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struct drm_device *dev;
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atomic_t usage;
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/*
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* The below three fields are protected by the fence manager spinlock.
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*/
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struct list_head ring;
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int fence_class;
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uint32_t native_type;
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uint32_t type;
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uint32_t signaled;
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uint32_t sequence;
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uint32_t flush_mask;
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uint32_t submitted_flush;
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uint32_t error;
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};
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#define _DRM_FENCE_CLASSES 8
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#define _DRM_FENCE_TYPE_EXE 0x00
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struct drm_fence_class_manager {
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struct list_head ring;
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uint32_t pending_flush;
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wait_queue_head_t fence_queue;
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int pending_exe_flush;
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uint32_t last_exe_flush;
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uint32_t exe_flush_sequence;
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};
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struct drm_fence_manager {
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int initialized;
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rwlock_t lock;
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struct drm_fence_class_manager fence_class[_DRM_FENCE_CLASSES];
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uint32_t num_classes;
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atomic_t count;
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};
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struct drm_fence_driver {
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uint32_t num_classes;
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uint32_t wrap_diff;
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uint32_t flush_diff;
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uint32_t sequence_mask;
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int lazy_capable;
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int (*has_irq) (struct drm_device * dev, uint32_t fence_class,
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uint32_t flags);
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int (*emit) (struct drm_device * dev, uint32_t fence_class, uint32_t flags,
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uint32_t * breadcrumb, uint32_t * native_type);
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void (*poke_flush) (struct drm_device * dev, uint32_t fence_class);
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};
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extern void drm_fence_handler(struct drm_device *dev, uint32_t fence_class,
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uint32_t sequence, uint32_t type, uint32_t error);
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extern void drm_fence_manager_init(struct drm_device *dev);
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extern void drm_fence_manager_takedown(struct drm_device *dev);
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extern void drm_fence_flush_old(struct drm_device *dev, uint32_t fence_class,
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uint32_t sequence);
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extern int drm_fence_object_flush(struct drm_fence_object * fence, uint32_t type);
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extern int drm_fence_object_signaled(struct drm_fence_object * fence,
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uint32_t type, int flush);
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extern void drm_fence_usage_deref_locked(struct drm_fence_object ** fence);
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extern void drm_fence_usage_deref_unlocked(struct drm_fence_object ** fence);
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extern struct drm_fence_object *drm_fence_reference_locked(struct drm_fence_object *src);
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extern void drm_fence_reference_unlocked(struct drm_fence_object **dst,
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struct drm_fence_object *src);
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extern int drm_fence_object_wait(struct drm_fence_object * fence,
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int lazy, int ignore_signals, uint32_t mask);
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extern int drm_fence_object_create(struct drm_device *dev, uint32_t type,
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uint32_t fence_flags, uint32_t fence_class,
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struct drm_fence_object ** c_fence);
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extern int drm_fence_object_emit(struct drm_fence_object * fence,
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uint32_t fence_flags, uint32_t class,
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uint32_t type);
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extern void drm_fence_fill_arg(struct drm_fence_object *fence,
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struct drm_fence_arg *arg);
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extern int drm_fence_add_user_object(struct drm_file * priv,
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struct drm_fence_object * fence, int shareable);
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extern int drm_fence_create_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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extern int drm_fence_destroy_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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extern int drm_fence_reference_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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extern int drm_fence_unreference_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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extern int drm_fence_signaled_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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extern int drm_fence_flush_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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extern int drm_fence_wait_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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extern int drm_fence_emit_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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extern int drm_fence_buffers_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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/**************************************************
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*TTMs
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*/
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/*
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* The ttm backend GTT interface. (In our case AGP).
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* Any similar type of device (PCIE?)
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* needs only to implement these functions to be usable with the "TTM" interface.
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* The AGP backend implementation lives in drm_agpsupport.c
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* basically maps these calls to available functions in agpgart.
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* Each drm device driver gets an
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* additional function pointer that creates these types,
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* so that the device can choose the correct aperture.
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* (Multiple AGP apertures, etc.)
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* Most device drivers will let this point to the standard AGP implementation.
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*/
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#define DRM_BE_FLAG_NEEDS_FREE 0x00000001
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#define DRM_BE_FLAG_BOUND_CACHED 0x00000002
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struct drm_ttm_backend;
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struct drm_ttm_backend_func {
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int (*needs_ub_cache_adjust) (struct drm_ttm_backend * backend);
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int (*populate) (struct drm_ttm_backend * backend,
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unsigned long num_pages, struct page ** pages);
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void (*clear) (struct drm_ttm_backend * backend);
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int (*bind) (struct drm_ttm_backend * backend,
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struct drm_bo_mem_reg * bo_mem);
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int (*unbind) (struct drm_ttm_backend * backend);
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void (*destroy) (struct drm_ttm_backend * backend);
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};
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typedef struct drm_ttm_backend {
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struct drm_device *dev;
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uint32_t flags;
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struct drm_ttm_backend_func *func;
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} drm_ttm_backend_t;
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struct drm_ttm {
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struct mm_struct *user_mm;
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struct page *dummy_read_page;
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struct page **pages;
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uint32_t page_flags;
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unsigned long num_pages;
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atomic_t vma_count;
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struct drm_device *dev;
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int destroy;
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uint32_t mapping_offset;
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struct drm_ttm_backend *be;
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enum {
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ttm_bound,
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ttm_evicted,
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ttm_unbound,
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ttm_unpopulated,
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} state;
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};
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extern struct drm_ttm *drm_ttm_init(struct drm_device *dev, unsigned long size);
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extern int drm_bind_ttm(struct drm_ttm * ttm, struct drm_bo_mem_reg *bo_mem);
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extern void drm_ttm_unbind(struct drm_ttm * ttm);
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extern void drm_ttm_evict(struct drm_ttm * ttm);
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extern void drm_ttm_fixup_caching(struct drm_ttm * ttm);
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extern struct page *drm_ttm_get_page(struct drm_ttm * ttm, int index);
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extern void drm_ttm_cache_flush(void);
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extern int drm_ttm_populate(struct drm_ttm * ttm);
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extern int drm_ttm_set_user(struct drm_ttm *ttm,
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struct task_struct *tsk,
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int write,
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unsigned long start,
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unsigned long num_pages,
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struct page *dummy_read_page);
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/*
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* Destroy a ttm. The user normally calls drmRmMap or a similar IOCTL to do this,
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* which calls this function iff there are no vmas referencing it anymore. Otherwise it is called
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* when the last vma exits.
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*/
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extern int drm_destroy_ttm(struct drm_ttm * ttm);
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#define DRM_FLAG_MASKED(_old, _new, _mask) {\
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(_old) ^= (((_old) ^ (_new)) & (_mask)); \
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}
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#define DRM_TTM_MASK_FLAGS ((1 << PAGE_SHIFT) - 1)
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#define DRM_TTM_MASK_PFN (0xFFFFFFFFU - DRM_TTM_MASK_FLAGS)
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/*
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* Page flags.
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*/
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#define DRM_TTM_PAGE_UNCACHED (1 << 0)
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#define DRM_TTM_PAGE_USED (1 << 1)
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#define DRM_TTM_PAGE_BOUND (1 << 2)
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#define DRM_TTM_PAGE_PRESENT (1 << 3)
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#define DRM_TTM_PAGE_VMALLOC (1 << 4)
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#define DRM_TTM_PAGE_USER (1 << 5)
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#define DRM_TTM_PAGE_USER_WRITE (1 << 6)
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#define DRM_TTM_PAGE_USER_DIRTY (1 << 7)
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#define DRM_TTM_PAGE_USER_DMA (1 << 8)
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/***************************************************
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* Buffer objects. (drm_bo.c, drm_bo_move.c)
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*/
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struct drm_bo_mem_reg {
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struct drm_mm_node *mm_node;
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unsigned long size;
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unsigned long num_pages;
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uint32_t page_alignment;
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uint32_t mem_type;
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uint64_t flags;
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uint64_t mask;
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uint32_t desired_tile_stride;
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uint32_t hw_tile_stride;
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};
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enum drm_bo_type {
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drm_bo_type_dc,
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drm_bo_type_user,
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drm_bo_type_kernel, /* for initial kernel allocations */
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};
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struct drm_buffer_object {
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struct drm_device *dev;
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struct drm_user_object base;
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/*
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* If there is a possibility that the usage variable is zero,
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* then dev->struct_mutext should be locked before incrementing it.
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*/
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atomic_t usage;
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unsigned long buffer_start;
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enum drm_bo_type type;
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unsigned long offset;
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atomic_t mapped;
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struct drm_bo_mem_reg mem;
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struct list_head lru;
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struct list_head ddestroy;
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uint32_t fence_type;
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uint32_t fence_class;
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uint32_t new_fence_type;
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uint32_t new_fence_class;
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struct drm_fence_object *fence;
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uint32_t priv_flags;
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wait_queue_head_t event_queue;
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struct mutex mutex;
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unsigned long num_pages;
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/* For pinned buffers */
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struct drm_mm_node *pinned_node;
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uint32_t pinned_mem_type;
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struct list_head pinned_lru;
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/* For vm */
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struct drm_ttm *ttm;
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struct drm_map_list map_list;
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uint32_t memory_type;
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unsigned long bus_offset;
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uint32_t vm_flags;
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void *iomap;
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#ifdef DRM_ODD_MM_COMPAT
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/* dev->struct_mutex only protected. */
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struct list_head vma_list;
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struct list_head p_mm_list;
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#endif
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};
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#define _DRM_BO_FLAG_UNFENCED 0x00000001
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#define _DRM_BO_FLAG_EVICTED 0x00000002
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struct drm_mem_type_manager {
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int has_type;
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int use_type;
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struct drm_mm manager;
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struct list_head lru;
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struct list_head pinned;
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uint32_t flags;
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uint32_t drm_bus_maptype;
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unsigned long gpu_offset;
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unsigned long io_offset;
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unsigned long io_size;
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void *io_addr;
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};
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struct drm_bo_lock {
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struct drm_user_object base;
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wait_queue_head_t queue;
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atomic_t write_lock_pending;
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atomic_t readers;
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};
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#define _DRM_FLAG_MEMTYPE_FIXED 0x00000001 /* Fixed (on-card) PCI memory */
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#define _DRM_FLAG_MEMTYPE_MAPPABLE 0x00000002 /* Memory mappable */
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#define _DRM_FLAG_MEMTYPE_CACHED 0x00000004 /* Cached binding */
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#define _DRM_FLAG_NEEDS_IOREMAP 0x00000008 /* Fixed memory needs ioremap
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before kernel access. */
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#define _DRM_FLAG_MEMTYPE_CMA 0x00000010 /* Can't map aperture */
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#define _DRM_FLAG_MEMTYPE_CSELECT 0x00000020 /* Select caching */
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struct drm_buffer_manager {
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struct drm_bo_lock bm_lock;
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struct mutex evict_mutex;
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int nice_mode;
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int initialized;
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struct drm_file *last_to_validate;
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struct drm_mem_type_manager man[DRM_BO_MEM_TYPES];
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struct list_head unfenced;
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struct list_head ddestroy;
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
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struct work_struct wq;
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#else
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struct delayed_work wq;
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#endif
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uint32_t fence_type;
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unsigned long cur_pages;
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atomic_t count;
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struct page *dummy_read_page;
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};
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struct drm_bo_driver {
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const uint32_t *mem_type_prio;
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const uint32_t *mem_busy_prio;
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uint32_t num_mem_type_prio;
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uint32_t num_mem_busy_prio;
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struct drm_ttm_backend *(*create_ttm_backend_entry)
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(struct drm_device * dev);
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int (*fence_type) (struct drm_buffer_object *bo, uint32_t *fclass,
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uint32_t * type);
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int (*invalidate_caches) (struct drm_device * dev, uint64_t flags);
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int (*init_mem_type) (struct drm_device * dev, uint32_t type,
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struct drm_mem_type_manager * man);
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uint32_t(*evict_mask) (struct drm_buffer_object *bo);
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int (*move) (struct drm_buffer_object * bo,
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int evict, int no_wait, struct drm_bo_mem_reg * new_mem);
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void (*ttm_cache_flush)(struct drm_ttm *ttm);
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};
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/*
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* buffer objects (drm_bo.c)
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*/
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extern int drm_bo_create_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int drm_bo_destroy_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int drm_bo_map_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int drm_bo_unmap_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int drm_bo_reference_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int drm_bo_unreference_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int drm_bo_wait_idle_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int drm_bo_info_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int drm_bo_setstatus_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int drm_mm_init_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int drm_mm_takedown_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int drm_mm_lock_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int drm_mm_unlock_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int drm_bo_version_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);
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extern int drm_bo_driver_finish(struct drm_device *dev);
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extern int drm_bo_driver_init(struct drm_device *dev);
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extern int drm_bo_pci_offset(struct drm_device *dev,
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struct drm_bo_mem_reg * mem,
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unsigned long *bus_base,
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unsigned long *bus_offset,
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unsigned long *bus_size);
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extern int drm_mem_reg_is_pci(struct drm_device *dev, struct drm_bo_mem_reg * mem);
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extern void drm_bo_usage_deref_locked(struct drm_buffer_object ** bo);
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extern void drm_bo_usage_deref_unlocked(struct drm_buffer_object ** bo);
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extern void drm_putback_buffer_objects(struct drm_device *dev);
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extern int drm_fence_buffer_objects(struct drm_device * dev,
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struct list_head *list,
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uint32_t fence_flags,
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struct drm_fence_object * fence,
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struct drm_fence_object ** used_fence);
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extern void drm_bo_add_to_lru(struct drm_buffer_object * bo);
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extern int drm_buffer_object_create(struct drm_device *dev, unsigned long size,
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enum drm_bo_type type, uint64_t mask,
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uint32_t hint, uint32_t page_alignment,
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unsigned long buffer_start,
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struct drm_buffer_object **bo);
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extern int drm_bo_wait(struct drm_buffer_object * bo, int lazy, int ignore_signals,
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int no_wait);
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extern int drm_bo_mem_space(struct drm_buffer_object * bo,
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struct drm_bo_mem_reg * mem, int no_wait);
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extern int drm_bo_move_buffer(struct drm_buffer_object * bo,
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uint64_t new_mem_flags,
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int no_wait, int move_unfenced);
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extern int drm_bo_clean_mm(struct drm_device * dev, unsigned mem_type);
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extern int drm_bo_init_mm(struct drm_device * dev, unsigned type,
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unsigned long p_offset, unsigned long p_size);
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extern int drm_bo_handle_validate(struct drm_file * file_priv, uint32_t handle,
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uint32_t fence_class, uint64_t flags,
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uint64_t mask, uint32_t hint,
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int use_old_fence_class,
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struct drm_bo_info_rep * rep,
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struct drm_buffer_object **bo_rep);
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extern struct drm_buffer_object *drm_lookup_buffer_object(struct drm_file * file_priv,
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uint32_t handle,
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int check_owner);
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extern int drm_bo_do_validate(struct drm_buffer_object *bo,
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uint64_t flags, uint64_t mask, uint32_t hint,
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uint32_t fence_class,
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int no_wait,
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struct drm_bo_info_rep *rep);
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/*
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* Buffer object memory move- and map helpers.
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* drm_bo_move.c
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*/
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extern int drm_bo_move_ttm(struct drm_buffer_object * bo,
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int evict, int no_wait, struct drm_bo_mem_reg * new_mem);
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extern int drm_bo_move_memcpy(struct drm_buffer_object * bo,
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int evict,
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int no_wait, struct drm_bo_mem_reg * new_mem);
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extern int drm_bo_move_accel_cleanup(struct drm_buffer_object * bo,
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int evict,
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int no_wait,
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uint32_t fence_class,
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uint32_t fence_type,
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uint32_t fence_flags,
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struct drm_bo_mem_reg * new_mem);
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extern int drm_bo_same_page(unsigned long offset, unsigned long offset2);
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extern unsigned long drm_bo_offset_end(unsigned long offset,
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unsigned long end);
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struct drm_bo_kmap_obj {
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void *virtual;
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struct page *page;
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enum {
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bo_map_iomap,
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bo_map_vmap,
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bo_map_kmap,
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bo_map_premapped,
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} bo_kmap_type;
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};
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static inline void *drm_bmo_virtual(struct drm_bo_kmap_obj *map, int *is_iomem)
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{
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*is_iomem = (map->bo_kmap_type == bo_map_iomap ||
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map->bo_kmap_type == bo_map_premapped);
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return map->virtual;
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}
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extern void drm_bo_kunmap(struct drm_bo_kmap_obj *map);
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extern int drm_bo_kmap(struct drm_buffer_object *bo, unsigned long start_page,
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unsigned long num_pages, struct drm_bo_kmap_obj *map);
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/*
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* drm_regman.c
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*/
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struct drm_reg {
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struct list_head head;
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struct drm_fence_object *fence;
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uint32_t fence_type;
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uint32_t new_fence_type;
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};
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struct drm_reg_manager {
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struct list_head free;
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struct list_head lru;
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struct list_head unfenced;
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int (*reg_reusable)(const struct drm_reg *reg, const void *data);
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void (*reg_destroy)(struct drm_reg *reg);
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};
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extern int drm_regs_alloc(struct drm_reg_manager *manager,
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const void *data,
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uint32_t fence_class,
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uint32_t fence_type,
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int interruptible,
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int no_wait,
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struct drm_reg **reg);
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extern void drm_regs_fence(struct drm_reg_manager *regs,
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struct drm_fence_object *fence);
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extern void drm_regs_free(struct drm_reg_manager *manager);
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extern void drm_regs_add(struct drm_reg_manager *manager, struct drm_reg *reg);
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extern void drm_regs_init(struct drm_reg_manager *manager,
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int (*reg_reusable)(const struct drm_reg *,
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const void *),
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void (*reg_destroy)(struct drm_reg *));
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/*
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* drm_bo_lock.c
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* Simple replacement for the hardware lock on buffer manager init and clean.
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*/
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extern void drm_bo_init_lock(struct drm_bo_lock *lock);
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extern void drm_bo_read_unlock(struct drm_bo_lock *lock);
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extern int drm_bo_read_lock(struct drm_bo_lock *lock);
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extern int drm_bo_write_lock(struct drm_bo_lock *lock,
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struct drm_file *file_priv);
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extern int drm_bo_write_unlock(struct drm_bo_lock *lock,
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struct drm_file *file_priv);
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#ifdef CONFIG_DEBUG_MUTEXES
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#define DRM_ASSERT_LOCKED(_mutex) \
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BUG_ON(!mutex_is_locked(_mutex) || \
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((_mutex)->owner != current_thread_info()))
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#else
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#define DRM_ASSERT_LOCKED(_mutex)
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#endif
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#endif
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