38 	struct spu_context *ctx;  in alloc_spu_context()  local
40 	ctx = kzalloc(sizeof *ctx, GFP_KERNEL);  in alloc_spu_context()
41 	if (!ctx)  in alloc_spu_context()
46 	if (spu_init_csa(&ctx->csa))  in alloc_spu_context()
48 	spin_lock_init(&ctx->mmio_lock);  in alloc_spu_context()
49 	mutex_init(&ctx->mapping_lock);  in alloc_spu_context()
50 	kref_init(&ctx->kref);  in alloc_spu_context()
51 	mutex_init(&ctx->state_mutex);  in alloc_spu_context()
52 	mutex_init(&ctx->run_mutex);  in alloc_spu_context()
53 	init_waitqueue_head(&ctx->ibox_wq);  in alloc_spu_context()
54 	init_waitqueue_head(&ctx->wbox_wq);  in alloc_spu_context()
55 	init_waitqueue_head(&ctx->stop_wq);  in alloc_spu_context()
56 	init_waitqueue_head(&ctx->mfc_wq);  in alloc_spu_context()
57 	init_waitqueue_head(&ctx->run_wq);  in alloc_spu_context()
58 	ctx->state = SPU_STATE_SAVED;  in alloc_spu_context()
59 	ctx->ops = &spu_backing_ops;  in alloc_spu_context()
60 	ctx->owner = get_task_mm(current);  in alloc_spu_context()
61 	INIT_LIST_HEAD(&ctx->rq);  in alloc_spu_context()
62 	INIT_LIST_HEAD(&ctx->aff_list);  in alloc_spu_context()
64 		spu_gang_add_ctx(gang, ctx);  in alloc_spu_context()
66 	__spu_update_sched_info(ctx);  in alloc_spu_context()
67 	spu_set_timeslice(ctx);  in alloc_spu_context()
68 	ctx->stats.util_state = SPU_UTIL_IDLE_LOADED;  in alloc_spu_context()
69 	ctx->stats.tstamp = ktime_get_ns();  in alloc_spu_context()
74 	kfree(ctx);  in alloc_spu_context()
75 	ctx = NULL;  in alloc_spu_context()
77 	return ctx;  in alloc_spu_context()
82 	struct spu_context *ctx;  in destroy_spu_context()  local
83 	ctx = container_of(kref, struct spu_context, kref);  in destroy_spu_context()
84 	spu_context_nospu_trace(destroy_spu_context__enter, ctx);  in destroy_spu_context()
85 	mutex_lock(&ctx->state_mutex);  in destroy_spu_context()
86 	spu_deactivate(ctx);  in destroy_spu_context()
87 	mutex_unlock(&ctx->state_mutex);  in destroy_spu_context()
88 	spu_fini_csa(&ctx->csa);  in destroy_spu_context()
89 	if (ctx->gang)  in destroy_spu_context()
90 		spu_gang_remove_ctx(ctx->gang, ctx);  in destroy_spu_context()
91 	if (ctx->prof_priv_kref)  in destroy_spu_context()
92 		kref_put(ctx->prof_priv_kref, ctx->prof_priv_release);  in destroy_spu_context()
93 	BUG_ON(!list_empty(&ctx->rq));  in destroy_spu_context()
95 	kfree(ctx->switch_log);  in destroy_spu_context()
96 	kfree(ctx);  in destroy_spu_context()
99 struct spu_context * get_spu_context(struct spu_context *ctx)  in get_spu_context()  argument
101 	kref_get(&ctx->kref);  in get_spu_context()
102 	return ctx;  in get_spu_context()
105 int put_spu_context(struct spu_context *ctx)  in put_spu_context()  argument
107 	return kref_put(&ctx->kref, &destroy_spu_context);  in put_spu_context()
111 void spu_forget(struct spu_context *ctx)  in spu_forget()  argument
120 	mutex_lock(&ctx->state_mutex);  in spu_forget()
121 	if (ctx->state != SPU_STATE_SAVED)  in spu_forget()
122 		spu_deactivate(ctx);  in spu_forget()
124 	mm = ctx->owner;  in spu_forget()
125 	ctx->owner = NULL;  in spu_forget()
127 	spu_release(ctx);  in spu_forget()
130 void spu_unmap_mappings(struct spu_context *ctx)  in spu_unmap_mappings()  argument
132 	mutex_lock(&ctx->mapping_lock);  in spu_unmap_mappings()
133 	if (ctx->local_store)  in spu_unmap_mappings()
134 		unmap_mapping_range(ctx->local_store, 0, LS_SIZE, 1);  in spu_unmap_mappings()
135 	if (ctx->mfc)  in spu_unmap_mappings()
136 		unmap_mapping_range(ctx->mfc, 0, SPUFS_MFC_MAP_SIZE, 1);  in spu_unmap_mappings()
137 	if (ctx->cntl)  in spu_unmap_mappings()
138 		unmap_mapping_range(ctx->cntl, 0, SPUFS_CNTL_MAP_SIZE, 1);  in spu_unmap_mappings()
139 	if (ctx->signal1)  in spu_unmap_mappings()
140 		unmap_mapping_range(ctx->signal1, 0, SPUFS_SIGNAL_MAP_SIZE, 1);  in spu_unmap_mappings()
141 	if (ctx->signal2)  in spu_unmap_mappings()
142 		unmap_mapping_range(ctx->signal2, 0, SPUFS_SIGNAL_MAP_SIZE, 1);  in spu_unmap_mappings()
143 	if (ctx->mss)  in spu_unmap_mappings()
144 		unmap_mapping_range(ctx->mss, 0, SPUFS_MSS_MAP_SIZE, 1);  in spu_unmap_mappings()
145 	if (ctx->psmap)  in spu_unmap_mappings()
146 		unmap_mapping_range(ctx->psmap, 0, SPUFS_PS_MAP_SIZE, 1);  in spu_unmap_mappings()
147 	mutex_unlock(&ctx->mapping_lock);  in spu_unmap_mappings()
154 int spu_acquire_saved(struct spu_context *ctx)  in spu_acquire_saved()  argument
158 	spu_context_nospu_trace(spu_acquire_saved__enter, ctx);  in spu_acquire_saved()
160 	ret = spu_acquire(ctx);  in spu_acquire_saved()
164 	if (ctx->state != SPU_STATE_SAVED) {  in spu_acquire_saved()
165 		set_bit(SPU_SCHED_WAS_ACTIVE, &ctx->sched_flags);  in spu_acquire_saved()
166 		spu_deactivate(ctx);  in spu_acquire_saved()
176 void spu_release_saved(struct spu_context *ctx)  in spu_release_saved()  argument
178 	BUG_ON(ctx->state != SPU_STATE_SAVED);  in spu_release_saved()
180 	if (test_and_clear_bit(SPU_SCHED_WAS_ACTIVE, &ctx->sched_flags) &&  in spu_release_saved()
181 			test_bit(SPU_SCHED_SPU_RUN, &ctx->sched_flags))  in spu_release_saved()
182 		spu_activate(ctx, 0);  in spu_release_saved()
184 	spu_release(ctx);  in spu_release_saved()