Signed-off-by: Qiang Yu yuq825@gmail.com --- drivers/gpu/drm/lima/lima_object.c | 120 +++++++++++++++++++++++++++++ drivers/gpu/drm/lima/lima_object.h | 87 +++++++++++++++++++++ 2 files changed, 207 insertions(+) create mode 100644 drivers/gpu/drm/lima/lima_object.c create mode 100644 drivers/gpu/drm/lima/lima_object.h
diff --git a/drivers/gpu/drm/lima/lima_object.c b/drivers/gpu/drm/lima/lima_object.c new file mode 100644 index 000000000000..5a22b235626b --- /dev/null +++ b/drivers/gpu/drm/lima/lima_object.c @@ -0,0 +1,120 @@ +/* + * Copyright (C) 2017-2018 Lima Project + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#include <drm/drm_prime.h> + +#include "lima_object.h" + +static void lima_bo_init_placement(struct lima_bo *bo) +{ + struct ttm_placement *placement = &bo->placement; + struct ttm_place *place = &bo->place; + + place->fpfn = 0; + place->lpfn = 0; + place->flags = TTM_PL_FLAG_TT | TTM_PL_FLAG_WC; + + /* pin all bo for now */ + place->flags |= TTM_PL_FLAG_NO_EVICT; + + placement->num_placement = 1; + placement->placement = place; + + placement->num_busy_placement = 1; + placement->busy_placement = place; +} + +static void lima_bo_destroy(struct ttm_buffer_object *tbo) +{ + struct lima_bo *bo = ttm_to_lima_bo(tbo); + + if (bo->gem.import_attach) + drm_prime_gem_destroy(&bo->gem, bo->tbo.sg); + drm_gem_object_release(&bo->gem); + kfree(bo); +} + +struct lima_bo *lima_bo_create(struct lima_device *dev, u64 size, + u32 flags, enum ttm_bo_type type, + struct sg_table *sg, + struct reservation_object *resv) +{ + struct lima_bo *bo; + struct ttm_mem_type_manager *man; + size_t acc_size; + int err; + + size = PAGE_ALIGN(size); + man = dev->mman.bdev.man + TTM_PL_TT; + if (size >= (man->size << PAGE_SHIFT)) + return ERR_PTR(-ENOMEM); + + acc_size = ttm_bo_dma_acc_size(&dev->mman.bdev, size, + sizeof(struct lima_bo)); + + bo = kzalloc(sizeof(*bo), GFP_KERNEL); + if (!bo) + return ERR_PTR(-ENOMEM); + + drm_gem_private_object_init(dev->ddev, &bo->gem, size); + + INIT_LIST_HEAD(&bo->va); + + bo->tbo.bdev = &dev->mman.bdev; + + lima_bo_init_placement(bo); + + err = ttm_bo_init(&dev->mman.bdev, &bo->tbo, size, type, + &bo->placement, 0, type != ttm_bo_type_kernel, + acc_size, sg, resv, &lima_bo_destroy); + if (err) + goto err_out; + + return bo; + +err_out: + kfree(bo); + return ERR_PTR(err); +} + +dma_addr_t *lima_bo_get_pages(struct lima_bo *bo) +{ + struct lima_ttm_tt *ttm = (void *)bo->tbo.ttm; + return ttm->ttm.dma_address; +} + +void *lima_bo_kmap(struct lima_bo *bo) +{ + bool is_iomem; + void *ret; + int err; + + ret = ttm_kmap_obj_virtual(&bo->kmap, &is_iomem); + if (ret) + return ret; + + err = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, &bo->kmap); + if (err) + return ERR_PTR(err); + + return ttm_kmap_obj_virtual(&bo->kmap, &is_iomem); +} diff --git a/drivers/gpu/drm/lima/lima_object.h b/drivers/gpu/drm/lima/lima_object.h new file mode 100644 index 000000000000..2b8b8fcb9063 --- /dev/null +++ b/drivers/gpu/drm/lima/lima_object.h @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2017-2018 Lima Project + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ +#ifndef __LIMA_OBJECT_H__ +#define __LIMA_OBJECT_H__ + +#include <drm/drm_gem.h> +#include <drm/ttm/ttm_placement.h> +#include <drm/ttm/ttm_bo_api.h> + +#include "lima_device.h" + +struct lima_bo { + struct drm_gem_object gem; + + struct ttm_place place; + struct ttm_placement placement; + struct ttm_buffer_object tbo; + struct ttm_bo_kmap_obj kmap; + + struct list_head va; +}; + +static inline struct lima_bo * +to_lima_bo(struct drm_gem_object *obj) +{ + return container_of(obj, struct lima_bo, gem); +} + +static inline struct lima_bo * +ttm_to_lima_bo(struct ttm_buffer_object *tbo) +{ + return container_of(tbo, struct lima_bo, tbo); +} + +static inline int lima_bo_reserve(struct lima_bo *bo, bool intr) +{ + struct lima_device *dev = ttm_to_lima_dev(bo->tbo.bdev); + int r; + + r = ttm_bo_reserve(&bo->tbo, intr, false, NULL); + if (unlikely(r != 0)) { + if (r != -ERESTARTSYS) + dev_err(dev->dev, "%p reserve failed\n", bo); + return r; + } + return 0; +} + +static inline void lima_bo_unreserve(struct lima_bo *bo) +{ + ttm_bo_unreserve(&bo->tbo); +} + +struct lima_bo *lima_bo_create(struct lima_device *dev, u64 size, + u32 flags, enum ttm_bo_type type, + struct sg_table *sg, + struct reservation_object *resv); + +static inline void lima_bo_unref(struct lima_bo *bo) +{ + struct ttm_buffer_object *tbo = &bo->tbo; + ttm_bo_unref(&tbo); +} + +dma_addr_t *lima_bo_get_pages(struct lima_bo *bo); +void *lima_bo_kmap(struct lima_bo *bo); + +#endif