mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-18 02:36:43 +07:00
3b96a0b140
Also extract drm_auth.h for nicer grouping. v2: Nuke the other comments since they don't really explain a lot, and within the drm core we generally only document functions exported to drivers: The main audience for these docs are driver writers. v3: Limit the exposure of drm_master internals by only including drm_auth.h where it is neede (Chris). v4: Spelling polish (Emil). Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
208 lines
6.8 KiB
C
208 lines
6.8 KiB
C
#ifndef __DRM_DRM_LEGACY_H__
|
|
#define __DRM_DRM_LEGACY_H__
|
|
|
|
#include <drm/drm_auth.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.
|
|
*/
|
|
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
/**
|
|
* 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 {
|
|
resource_size_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);
|
|
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);
|
|
void drm_legacy_master_rmmaps(struct drm_device *dev,
|
|
struct drm_master *master);
|
|
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_pci.c dma alloc wrappers */
|
|
void __drm_legacy_pci_free(struct drm_device *dev, drm_dma_handle_t * dmah);
|
|
|
|
/* 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);
|
|
|
|
static __inline__ struct drm_local_map *drm_legacy_findmap(struct drm_device *dev,
|
|
unsigned int token)
|
|
{
|
|
struct drm_map_list *_entry;
|
|
list_for_each_entry(_entry, &dev->maplist, head)
|
|
if (_entry->user_token == token)
|
|
return _entry->map;
|
|
return NULL;
|
|
}
|
|
|
|
#endif /* __DRM_DRM_LEGACY_H__ */
|