1 // SPDX-License-Identifier: GPL-2.0 OR MIT
4 #include <linux/slab.h>
6 #include "lima_device.h"
9 int lima_ctx_create(struct lima_device *dev, struct lima_ctx_mgr *mgr, u32 *id)
14 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
18 kref_init(&ctx->refcnt);
20 for (i = 0; i < lima_pipe_num; i++) {
21 err = lima_sched_context_init(dev->pipe + i, ctx->context + i, &ctx->guilty);
26 err = xa_alloc(&mgr->handles, id, ctx, xa_limit_32b, GFP_KERNEL);
33 for (i--; i >= 0; i--)
34 lima_sched_context_fini(dev->pipe + i, ctx->context + i);
39 static void lima_ctx_do_release(struct kref *ref)
41 struct lima_ctx *ctx = container_of(ref, struct lima_ctx, refcnt);
44 for (i = 0; i < lima_pipe_num; i++)
45 lima_sched_context_fini(ctx->dev->pipe + i, ctx->context + i);
49 int lima_ctx_free(struct lima_ctx_mgr *mgr, u32 id)
54 mutex_lock(&mgr->lock);
55 ctx = xa_erase(&mgr->handles, id);
57 kref_put(&ctx->refcnt, lima_ctx_do_release);
60 mutex_unlock(&mgr->lock);
64 struct lima_ctx *lima_ctx_get(struct lima_ctx_mgr *mgr, u32 id)
68 mutex_lock(&mgr->lock);
69 ctx = xa_load(&mgr->handles, id);
71 kref_get(&ctx->refcnt);
72 mutex_unlock(&mgr->lock);
76 void lima_ctx_put(struct lima_ctx *ctx)
78 kref_put(&ctx->refcnt, lima_ctx_do_release);
81 void lima_ctx_mgr_init(struct lima_ctx_mgr *mgr)
83 mutex_init(&mgr->lock);
84 xa_init_flags(&mgr->handles, XA_FLAGS_ALLOC);
87 void lima_ctx_mgr_fini(struct lima_ctx_mgr *mgr)
92 xa_for_each(&mgr->handles, id, ctx) {
93 kref_put(&ctx->refcnt, lima_ctx_do_release);
96 xa_destroy(&mgr->handles);
97 mutex_destroy(&mgr->lock);