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502e95c667
This patch implements the virtual GEM driver with PRIME sharing which allows vgem to import a gem object from other drivers for the purpose of mmap-ing them to userspace. The mmap is done using the mmap operation exported by other drivers. v2: remove platform_device and do not attach to dma bufs v3: use drm helpers for get/put pages v4: correct dumb create pitch Reviewed-by: Rob Clark <robdclark@gmail.com> (v3) Reviewed-by: Stéphane Marchesin <marcheu@chromium.org> (v3) Signed-off-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Signed-off-by: Zach Reizner <zachr@google.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
57 lines
2.1 KiB
C
57 lines
2.1 KiB
C
/*
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* Copyright © 2012 Intel Corporation
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* Copyright © 2014 The Chromium OS Authors
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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 (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Ben Widawsky <ben@bwidawsk.net>
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*
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*/
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#ifndef _VGEM_DRV_H_
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#define _VGEM_DRV_H_
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#include <drm/drmP.h>
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#include <drm/drm_gem.h>
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#define to_vgem_bo(x) container_of(x, struct drm_vgem_gem_object, base)
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struct drm_vgem_gem_object {
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struct drm_gem_object base;
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struct page **pages;
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bool use_dma_buf;
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};
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/* vgem_drv.c */
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extern void vgem_gem_put_pages(struct drm_vgem_gem_object *obj);
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extern int vgem_gem_get_pages(struct drm_vgem_gem_object *obj);
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/* vgem_dma_buf.c */
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extern struct sg_table *vgem_gem_prime_get_sg_table(
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struct drm_gem_object *gobj);
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extern int vgem_gem_prime_pin(struct drm_gem_object *gobj);
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extern void vgem_gem_prime_unpin(struct drm_gem_object *gobj);
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extern void *vgem_gem_prime_vmap(struct drm_gem_object *gobj);
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extern void vgem_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
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extern struct drm_gem_object *vgem_gem_prime_import(struct drm_device *dev,
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struct dma_buf *dma_buf);
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#endif
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