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f72e7cd077
This version update involves a lot of content, so the previous version has been deleted and the new version has been re-merged into the kernel. The configuration file for the GPU driver originates from a previous version. Signed-off-by: Mingzheng Xing <xingmingzheng@iscas.ac.cn>
240 lines
8.6 KiB
C
240 lines
8.6 KiB
C
/*
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* @File
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* @Title PowerVR Linux fence interface
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* @Codingstyle LinuxKernel
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* @Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved
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* @License Dual MIT/GPLv2
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*
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* The contents of this file are subject to the MIT license as set out below.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* 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 shall be included in
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* all copies or substantial portions of the Software.
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*
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* Alternatively, the contents of this file may be used under the terms of
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* the GNU General Public License Version 2 ("GPL") in which case the provisions
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* of GPL are applicable instead of those above.
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*
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* If you wish to allow use of your version of this file only under the terms of
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* GPL, and not to allow others to use your version of this file under the terms
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* of the MIT license, indicate your decision by deleting the provisions above
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* and replace them with the notice and other provisions required by GPL as set
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* out in the file called "GPL-COPYING" included in this distribution. If you do
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* not delete the provisions above, a recipient may use your version of this file
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* under the terms of either the MIT license or GPL.
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*
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* This License is also included in this distribution in the file called
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* "MIT-COPYING".
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*
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* EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS
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* PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
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* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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* PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#if !defined(__PVR_FENCE_H__)
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#define __PVR_FENCE_H__
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#include <linux/version.h>
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0))
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static inline void pvr_fence_cleanup(void)
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{
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}
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#else
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#include "services_kernel_client.h"
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#include "pvr_linux_fence.h"
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#include <linux/list.h>
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#include <linux/spinlock.h>
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#include <linux/workqueue.h>
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struct SYNC_CHECKPOINT_CONTEXT_TAG;
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struct SYNC_CHECKPOINT_TAG;
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/**
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* pvr_fence_context - PVR fence context used to create and manage PVR fences
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* @lock: protects the context and fences created on the context
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* @name: fence context name (used for debugging)
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* @dbg_request_handle: handle for callback used to dump debug data
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* @fence_context: fence context with which to associate fences
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* @fence_seqno: sequence number to use for the next fence
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* @fence_wq: work queue for signalled fence work
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* @check_status_work: work item used to inform services when a foreign fence
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* has signalled
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* @cmd_complete_handle: handle for callback used to signal fences when fence
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* syncs are met
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* @list_lock: protects the active and active foreign lists
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* @signal_list: list of fences waiting to be signalled
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* @fence_list: list of fences (used for debugging)
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* @deferred_free_list: list of fences that we will free when we are no longer
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* holding spinlocks. The frees get implemented when an update fence is
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* signalled or the context is freed.
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*/
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struct pvr_fence_context {
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spinlock_t lock;
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char name[32];
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void *dbg_request_handle;
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u64 fence_context;
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atomic_t fence_seqno;
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struct workqueue_struct *fence_wq;
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struct work_struct check_status_work;
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void *cmd_complete_handle;
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spinlock_t list_lock;
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struct list_head signal_list;
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struct list_head fence_list;
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struct list_head deferred_free_list;
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struct kref kref;
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struct work_struct destroy_work;
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};
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/**
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* pvr_fence - PVR fence that represents both native and foreign fences
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* @base: fence structure
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* @fctx: fence context on which this fence was created
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* @name: fence name (used for debugging)
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* @fence: pointer to base fence structure or foreign fence
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* @sync_checkpoint: services sync checkpoint used by hardware
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* @fence_head: entry on the context fence and deferred free list
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* @signal_head: entry on the context signal list
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* @cb: foreign fence callback to set the sync to signalled
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*/
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struct pvr_fence {
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struct dma_fence base;
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struct pvr_fence_context *fctx;
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char name[32];
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struct dma_fence *fence;
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struct SYNC_CHECKPOINT_TAG *sync_checkpoint;
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struct list_head fence_head;
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struct list_head signal_head;
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struct dma_fence_cb cb;
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struct rcu_head rcu;
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};
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extern const struct dma_fence_ops pvr_fence_ops;
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extern const struct dma_fence_ops pvr_fence_foreign_ops;
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static inline bool is_our_fence(struct pvr_fence_context *fctx,
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struct dma_fence *fence)
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{
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return (fence->context == fctx->fence_context);
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}
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static inline bool is_pvr_fence(struct dma_fence *fence)
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{
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return ((fence->ops == &pvr_fence_ops) ||
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(fence->ops == &pvr_fence_foreign_ops));
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}
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static inline struct pvr_fence *to_pvr_fence(struct dma_fence *fence)
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{
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if (is_pvr_fence(fence))
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return container_of(fence, struct pvr_fence, base);
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return NULL;
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}
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PVRSRV_ERROR pvr_fence_context_register_dbg(void *dbg_request_handle,
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void *dev,
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struct pvr_fence_context *fctx);
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struct pvr_fence_context *
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pvr_fence_foreign_context_create(struct workqueue_struct *fence_status_wq,
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const char *name);
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struct pvr_fence_context *
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pvr_fence_context_create(void *dev_cookie,
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struct workqueue_struct *fence_status_wq,
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const char *name);
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void pvr_fence_context_destroy(struct pvr_fence_context *fctx);
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void pvr_context_value_str(struct pvr_fence_context *fctx, char *str, int size);
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struct pvr_fence *
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pvr_fence_create(struct pvr_fence_context *fctx,
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struct SYNC_CHECKPOINT_CONTEXT_TAG *sync_checkpoint_ctx,
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int timeline_fd, const char *name);
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struct pvr_fence *
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pvr_fence_create_from_fence(struct pvr_fence_context *fctx,
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struct SYNC_CHECKPOINT_CONTEXT_TAG *sync_checkpoint_ctx,
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struct dma_fence *fence,
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PVRSRV_FENCE fence_fd,
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const char *name);
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void pvr_fence_destroy(struct pvr_fence *pvr_fence);
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int pvr_fence_sw_signal(struct pvr_fence *pvr_fence);
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int pvr_fence_sw_error(struct pvr_fence *pvr_fence);
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int pvr_fence_get_checkpoints(struct pvr_fence **pvr_fences, u32 nr_fences,
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struct SYNC_CHECKPOINT_TAG **fence_checkpoints);
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struct SYNC_CHECKPOINT_TAG *
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pvr_fence_get_checkpoint(struct pvr_fence *update_fence);
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void pvr_fence_context_signal_fences_nohw(void *data);
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void pvr_fence_context_free_deferred_callback(void *data);
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u32 pvr_fence_dump_info_on_stalled_ufos(struct pvr_fence_context *fctx,
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u32 nr_ufos,
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u32 *vaddrs);
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static inline void pvr_fence_cleanup(void)
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{
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/*
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* Ensure all PVR fence contexts have been destroyed, by flushing
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* the global workqueue.
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*/
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flush_scheduled_work();
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}
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#if defined(PVR_FENCE_DEBUG)
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#define PVR_FENCE_CTX_TRACE(c, fmt, ...) \
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do { \
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struct pvr_fence_context *__fctx = (c); \
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pr_err("c %llu: (PVR) " fmt, (u64) __fctx->fence_context, \
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## __VA_ARGS__); \
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} while (0)
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#else
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#define PVR_FENCE_CTX_TRACE(c, fmt, ...)
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#endif
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#define PVR_FENCE_CTX_WARN(c, fmt, ...) \
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do { \
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struct pvr_fence_context *__fctx = (c); \
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pr_warn("c %llu: (PVR) " fmt, (u64) __fctx->fence_context, \
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## __VA_ARGS__); \
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} while (0)
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#define PVR_FENCE_CTX_ERR(c, fmt, ...) \
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do { \
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struct pvr_fence_context *__fctx = (c); \
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pr_err("c %llu: (PVR) " fmt, (u64) __fctx->fence_context, \
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## __VA_ARGS__); \
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} while (0)
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#if defined(PVR_FENCE_DEBUG)
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#define PVR_FENCE_TRACE(f, fmt, ...) \
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DMA_FENCE_ERR(f, "(PVR) " fmt, ## __VA_ARGS__)
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#else
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#define PVR_FENCE_TRACE(f, fmt, ...)
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#endif
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#define PVR_FENCE_WARN(f, fmt, ...) \
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DMA_FENCE_WARN(f, "(PVR) " fmt, ## __VA_ARGS__)
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#define PVR_FENCE_ERR(f, fmt, ...) \
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DMA_FENCE_ERR(f, "(PVR) " fmt, ## __VA_ARGS__)
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#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)) */
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#endif /* !defined(__PVR_FENCE_H__) */
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