diff options
Diffstat (limited to 'drivers/gpu/drm/tegra/gem.h')
| -rw-r--r-- | drivers/gpu/drm/tegra/gem.h | 40 |
1 files changed, 32 insertions, 8 deletions
diff --git a/drivers/gpu/drm/tegra/gem.h b/drivers/gpu/drm/tegra/gem.h index 6bd7dd7e55b4..bf2cbd48eb3f 100644 --- a/drivers/gpu/drm/tegra/gem.h +++ b/drivers/gpu/drm/tegra/gem.h @@ -1,11 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * Tegra host1x GEM implementation * * Copyright (c) 2012-2013, NVIDIA Corporation. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ #ifndef __HOST1X_GEM_H @@ -14,7 +11,6 @@ #include <linux/host1x.h> #include <drm/drm.h> -#include <drm/drmP.h> #include <drm/drm_gem.h> #define TEGRA_BO_BOTTOM_UP (1 << 0) @@ -25,18 +21,45 @@ enum tegra_bo_tiling_mode { TEGRA_BO_TILING_MODE_BLOCK, }; +enum tegra_bo_sector_layout { + TEGRA_BO_SECTOR_LAYOUT_TEGRA, + TEGRA_BO_SECTOR_LAYOUT_GPU, +}; + struct tegra_bo_tiling { enum tegra_bo_tiling_mode mode; unsigned long value; + enum tegra_bo_sector_layout sector_layout; }; +/* + * How memory is referenced within a tegra_bo: + * + * Buffer source | Mapping API(*) | Fields + * ---------------+-----------------+--------------- + * Allocated here | DMA API | iova (IOVA mapped to drm->dev), vaddr (CPU VA) + * + * Allocated here | IOMMU API | pages/num_pages (Phys. memory), sgt (Mapped to drm->dev), + * | iova/size (Mapped to domain) + * + * Imported | DMA API | dma_buf (Imported dma_buf) + * + * Imported | IOMMU API | dma_buf (Imported dma_buf), + * | gem->import_attach (Attachment on drm->dev), + * | sgt (Mapped to drm->dev) + * | iova/size (Mapped to domain) + * + * (*) If tegra->domain is set, i.e. TegraDRM IOMMU domain is directly managed through IOMMU API, + * this is IOMMU API. Otherwise DMA API. + */ struct tegra_bo { struct drm_gem_object gem; struct host1x_bo base; unsigned long flags; struct sg_table *sgt; - dma_addr_t paddr; + dma_addr_t iova; void *vaddr; + struct dma_buf *dma_buf; struct drm_mm_node *mm; unsigned long num_pages; @@ -73,10 +96,11 @@ extern const struct vm_operations_struct tegra_bo_vm_ops; int __tegra_gem_mmap(struct drm_gem_object *gem, struct vm_area_struct *vma); int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma); -struct dma_buf *tegra_gem_prime_export(struct drm_device *drm, - struct drm_gem_object *gem, +struct dma_buf *tegra_gem_prime_export(struct drm_gem_object *gem, int flags); struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm, struct dma_buf *buf); +struct host1x_bo *tegra_gem_lookup(struct drm_file *file, u32 handle); + #endif |