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235 lines
6.8 KiB
Diff
235 lines
6.8 KiB
Diff
From bde1f6b4f2fc7c20343e175ea9f1ef18f0aaedfa 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 10:31:44 +0800
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Subject: [PATCH 055/146] drm/lima: add buffer object 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_object.c | 120 +++++++++++++++++++++++++++++
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drivers/gpu/drm/lima/lima_object.h | 87 +++++++++++++++++++++
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2 files changed, 207 insertions(+)
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create mode 100644 drivers/gpu/drm/lima/lima_object.c
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create mode 100644 drivers/gpu/drm/lima/lima_object.h
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diff --git a/drivers/gpu/drm/lima/lima_object.c b/drivers/gpu/drm/lima/lima_object.c
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new file mode 100644
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index 000000000000..5a22b235626b
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--- /dev/null
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+++ b/drivers/gpu/drm/lima/lima_object.c
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@@ -0,0 +1,120 @@
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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 <drm/drm_prime.h>
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+
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+#include "lima_object.h"
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+
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+static void lima_bo_init_placement(struct lima_bo *bo)
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+{
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+ struct ttm_placement *placement = &bo->placement;
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+ struct ttm_place *place = &bo->place;
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+
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+ place->fpfn = 0;
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+ place->lpfn = 0;
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+ place->flags = TTM_PL_FLAG_TT | TTM_PL_FLAG_WC;
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+
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+ /* pin all bo for now */
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+ place->flags |= TTM_PL_FLAG_NO_EVICT;
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+
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+ placement->num_placement = 1;
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+ placement->placement = place;
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+
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+ placement->num_busy_placement = 1;
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+ placement->busy_placement = place;
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+}
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+
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+static void lima_bo_destroy(struct ttm_buffer_object *tbo)
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+{
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+ struct lima_bo *bo = ttm_to_lima_bo(tbo);
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+
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+ if (bo->gem.import_attach)
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+ drm_prime_gem_destroy(&bo->gem, bo->tbo.sg);
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+ drm_gem_object_release(&bo->gem);
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+ kfree(bo);
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+}
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+
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+struct lima_bo *lima_bo_create(struct lima_device *dev, u64 size,
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+ u32 flags, enum ttm_bo_type type,
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+ struct sg_table *sg,
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+ struct reservation_object *resv)
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+{
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+ struct lima_bo *bo;
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+ struct ttm_mem_type_manager *man;
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+ size_t acc_size;
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+ int err;
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+
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+ size = PAGE_ALIGN(size);
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+ man = dev->mman.bdev.man + TTM_PL_TT;
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+ if (size >= (man->size << PAGE_SHIFT))
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+ return ERR_PTR(-ENOMEM);
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+
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+ acc_size = ttm_bo_dma_acc_size(&dev->mman.bdev, size,
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+ sizeof(struct lima_bo));
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+
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+ bo = kzalloc(sizeof(*bo), GFP_KERNEL);
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+ if (!bo)
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+ return ERR_PTR(-ENOMEM);
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+
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+ drm_gem_private_object_init(dev->ddev, &bo->gem, size);
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+
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+ INIT_LIST_HEAD(&bo->va);
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+
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+ bo->tbo.bdev = &dev->mman.bdev;
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+
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+ lima_bo_init_placement(bo);
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+
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+ err = ttm_bo_init(&dev->mman.bdev, &bo->tbo, size, type,
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+ &bo->placement, 0, type != ttm_bo_type_kernel,
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+ acc_size, sg, resv, &lima_bo_destroy);
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+ if (err)
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+ goto err_out;
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+
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+ return bo;
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+
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+err_out:
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+ kfree(bo);
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+ return ERR_PTR(err);
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+}
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+
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+dma_addr_t *lima_bo_get_pages(struct lima_bo *bo)
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+{
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+ struct lima_ttm_tt *ttm = (void *)bo->tbo.ttm;
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+ return ttm->ttm.dma_address;
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+}
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+
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+void *lima_bo_kmap(struct lima_bo *bo)
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+{
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+ bool is_iomem;
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+ void *ret;
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+ int err;
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+
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+ ret = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
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+ if (ret)
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+ return ret;
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+
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+ err = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap);
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+ if (err)
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+ return ERR_PTR(err);
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+
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+ return ttm_kmap_obj_virtual(&bo->kmap, &is_iomem);
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+}
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diff --git a/drivers/gpu/drm/lima/lima_object.h b/drivers/gpu/drm/lima/lima_object.h
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new file mode 100644
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index 000000000000..2b8b8fcb9063
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--- /dev/null
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+++ b/drivers/gpu/drm/lima/lima_object.h
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@@ -0,0 +1,87 @@
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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_OBJECT_H__
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+#define __LIMA_OBJECT_H__
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+
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+#include <drm/drm_gem.h>
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+#include <drm/ttm/ttm_placement.h>
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+#include <drm/ttm/ttm_bo_api.h>
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+
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+#include "lima_device.h"
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+
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+struct lima_bo {
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+ struct drm_gem_object gem;
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+
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+ struct ttm_place place;
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+ struct ttm_placement placement;
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+ struct ttm_buffer_object tbo;
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+ struct ttm_bo_kmap_obj kmap;
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+
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+ struct list_head va;
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+};
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+
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+static inline struct lima_bo *
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+to_lima_bo(struct drm_gem_object *obj)
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+{
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+ return container_of(obj, struct lima_bo, gem);
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+}
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+
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+static inline struct lima_bo *
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+ttm_to_lima_bo(struct ttm_buffer_object *tbo)
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+{
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+ return container_of(tbo, struct lima_bo, tbo);
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+}
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+
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+static inline int lima_bo_reserve(struct lima_bo *bo, bool intr)
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+{
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+ struct lima_device *dev = ttm_to_lima_dev(bo->tbo.bdev);
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+ int r;
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+
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+ r = ttm_bo_reserve(&bo->tbo, intr, false, NULL);
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+ if (unlikely(r != 0)) {
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+ if (r != -ERESTARTSYS)
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+ dev_err(dev->dev, "%p reserve failed\n", bo);
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+ return r;
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+ }
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+ return 0;
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+}
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+
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+static inline void lima_bo_unreserve(struct lima_bo *bo)
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+{
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+ ttm_bo_unreserve(&bo->tbo);
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+}
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+
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+struct lima_bo *lima_bo_create(struct lima_device *dev, u64 size,
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+ u32 flags, enum ttm_bo_type type,
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+ struct sg_table *sg,
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+ struct reservation_object *resv);
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+
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+static inline void lima_bo_unref(struct lima_bo *bo)
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+{
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+ struct ttm_buffer_object *tbo = &bo->tbo;
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+ ttm_bo_unref(&tbo);
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+}
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+
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+dma_addr_t *lima_bo_get_pages(struct lima_bo *bo);
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+void *lima_bo_kmap(struct lima_bo *bo);
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+
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+#endif
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--
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2.17.1
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