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222 lines
6.4 KiB
Diff
222 lines
6.4 KiB
Diff
From fcfa6c7b5a84fac51109efd86b4edf5085359485 Mon Sep 17 00:00:00 2001
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From: Qiang Yu <yuq825@gmail.com>
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Date: Wed, 16 May 2018 11:14:41 +0800
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Subject: [PATCH 059/146] drm/lima: add context related functions
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Signed-off-by: Qiang Yu <yuq825@gmail.com>
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---
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drivers/gpu/drm/lima/lima_ctx.c | 143 ++++++++++++++++++++++++++++++++
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drivers/gpu/drm/lima/lima_ctx.h | 51 ++++++++++++
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2 files changed, 194 insertions(+)
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create mode 100644 drivers/gpu/drm/lima/lima_ctx.c
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create mode 100644 drivers/gpu/drm/lima/lima_ctx.h
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diff --git a/drivers/gpu/drm/lima/lima_ctx.c b/drivers/gpu/drm/lima/lima_ctx.c
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new file mode 100644
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index 000000000000..7243861760b4
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--- /dev/null
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+++ b/drivers/gpu/drm/lima/lima_ctx.c
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@@ -0,0 +1,143 @@
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+/*
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+ * Copyright (C) 2017-2018 Lima Project
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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 "Software"),
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+ * to deal in the Software without restriction, including without limitation
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+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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+ * and/or sell copies of the Software, and to permit persons to whom the
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+ * Software is 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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+ * 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 NONINFRINGEMENT. IN NO EVENT SHALL
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+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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+ * OTHER DEALINGS IN THE SOFTWARE.
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+ */
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+
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+#include <linux/slab.h>
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+
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+#include "lima_device.h"
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+#include "lima_ctx.h"
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+
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+int lima_ctx_create(struct lima_device *dev, struct lima_ctx_mgr *mgr, u32 *id)
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+{
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+ struct lima_ctx *ctx;
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+ int i, err;
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+
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+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
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+ if (!ctx)
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+ return -ENOMEM;
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+ ctx->dev = dev;
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+ kref_init(&ctx->refcnt);
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+
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+ for (i = 0; i < lima_pipe_num; i++) {
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+ err = lima_sched_context_init(dev->pipe + i, ctx->context + i, &ctx->guilty);
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+ if (err)
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+ goto err_out0;
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+ }
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+
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+ idr_preload(GFP_KERNEL);
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+ spin_lock(&mgr->lock);
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+ err = idr_alloc(&mgr->handles, ctx, 1, 0, GFP_ATOMIC);
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+ spin_unlock(&mgr->lock);
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+ idr_preload_end();
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+ if (err < 0)
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+ goto err_out0;
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+
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+ *id = err;
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+ return 0;
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+
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+err_out0:
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+ for (i--; i >= 0; i--)
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+ lima_sched_context_fini(dev->pipe + i, ctx->context + i);
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+ kfree(ctx);
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+ return err;
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+}
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+
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+static void lima_ctx_do_release(struct kref *ref)
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+{
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+ struct lima_ctx *ctx = container_of(ref, struct lima_ctx, refcnt);
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+ int i;
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+
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+ for (i = 0; i < lima_pipe_num; i++)
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+ lima_sched_context_fini(ctx->dev->pipe + i, ctx->context + i);
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+ kfree(ctx);
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+}
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+
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+int lima_ctx_free(struct lima_ctx_mgr *mgr, u32 id)
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+{
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+ struct lima_ctx *ctx;
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+
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+ spin_lock(&mgr->lock);
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+ ctx = idr_remove(&mgr->handles, id);
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+ spin_unlock(&mgr->lock);
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+
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+ if (ctx) {
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+ kref_put(&ctx->refcnt, lima_ctx_do_release);
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+ return 0;
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+ }
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+ return -EINVAL;
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+}
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+
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+struct lima_ctx *lima_ctx_get(struct lima_ctx_mgr *mgr, u32 id)
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+{
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+ struct lima_ctx *ctx;
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+
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+ spin_lock(&mgr->lock);
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+ ctx = idr_find(&mgr->handles, id);
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+ if (ctx)
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+ kref_get(&ctx->refcnt);
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+ spin_unlock(&mgr->lock);
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+ return ctx;
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+}
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+
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+void lima_ctx_put(struct lima_ctx *ctx)
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+{
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+ kref_put(&ctx->refcnt, lima_ctx_do_release);
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+}
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+
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+void lima_ctx_mgr_init(struct lima_ctx_mgr *mgr)
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+{
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+ spin_lock_init(&mgr->lock);
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+ idr_init(&mgr->handles);
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+}
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+
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+void lima_ctx_mgr_fini(struct lima_ctx_mgr *mgr)
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+{
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+ struct lima_ctx *ctx;
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+ struct idr *idp;
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+ uint32_t id;
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+
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+ idp = &mgr->handles;
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+
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+ idr_for_each_entry(idp, ctx, id) {
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+ kref_put(&ctx->refcnt, lima_ctx_do_release);
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+ }
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+
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+ idr_destroy(&mgr->handles);
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+}
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+
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+struct dma_fence *lima_ctx_get_native_fence(struct lima_ctx_mgr *mgr,
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+ u32 ctx, u32 pipe, u32 seq)
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+{
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+ struct lima_ctx *c;
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+ struct dma_fence *ret;
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+
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+ if (pipe >= lima_pipe_num)
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+ return ERR_PTR(-EINVAL);
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+
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+ c = lima_ctx_get(mgr, ctx);
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+ if (!c)
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+ return ERR_PTR(-ENOENT);
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+
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+ ret = lima_sched_context_get_fence(c->context + pipe, seq);
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+
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+ lima_ctx_put(c);
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+ return ret;
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+}
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diff --git a/drivers/gpu/drm/lima/lima_ctx.h b/drivers/gpu/drm/lima/lima_ctx.h
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new file mode 100644
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index 000000000000..591f64532772
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--- /dev/null
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+++ b/drivers/gpu/drm/lima/lima_ctx.h
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@@ -0,0 +1,51 @@
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+/*
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+ * Copyright (C) 2017-2018 Lima Project
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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 "Software"),
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+ * to deal in the Software without restriction, including without limitation
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+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
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+ * and/or sell copies of the Software, and to permit persons to whom the
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+ * Software is 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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+ * 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 NONINFRINGEMENT. IN NO EVENT SHALL
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+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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+ * OTHER DEALINGS IN THE SOFTWARE.
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+ */
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+#ifndef __LIMA_CTX_H__
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+#define __LIMA_CTX_H__
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+
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+#include <linux/idr.h>
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+
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+#include "lima_device.h"
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+
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+struct lima_ctx {
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+ struct kref refcnt;
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+ struct lima_device *dev;
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+ struct lima_sched_context context[lima_pipe_num];
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+ atomic_t guilty;
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+};
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+
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+struct lima_ctx_mgr {
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+ spinlock_t lock;
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+ struct idr handles;
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+};
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+
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+int lima_ctx_create(struct lima_device *dev, struct lima_ctx_mgr *mgr, u32 *id);
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+int lima_ctx_free(struct lima_ctx_mgr *mgr, u32 id);
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+struct lima_ctx *lima_ctx_get(struct lima_ctx_mgr *mgr, u32 id);
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+void lima_ctx_put(struct lima_ctx *ctx);
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+void lima_ctx_mgr_init(struct lima_ctx_mgr *mgr);
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+void lima_ctx_mgr_fini(struct lima_ctx_mgr *mgr);
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+
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+struct dma_fence *lima_ctx_get_native_fence(struct lima_ctx_mgr *mgr,
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+ u32 ctx, u32 pipe, u32 seq);
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+
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+#endif
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--
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2.17.1
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