@@ -204,8 +204,7 @@ static const struct dma_buf_ops i915_dmabuf_ops = {
.end_cpu_access = i915_gem_end_cpu_access,
};
-struct dma_buf *i915_gem_prime_export(struct drm_device *dev,
- struct drm_gem_object *gem_obj, int flags)
+struct dma_buf *i915_gem_prime_export(struct drm_gem_object *gem_obj, int flags)
{
struct drm_i915_gem_object *obj = to_intel_bo(gem_obj);
DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
@@ -222,7 +221,7 @@ struct dma_buf *i915_gem_prime_export(struct drm_device *dev,
return ERR_PTR(ret);
}
- return drm_gem_dmabuf_export(dev, &exp_info);
+ return drm_gem_dmabuf_export(gem_obj->dev, &exp_info);
}
static int i915_gem_object_get_pages_dmabuf(struct drm_i915_gem_object *obj)
deleted file mode 100644
@@ -1,336 +0,0 @@
-/*
- * Copyright 2012 Red Hat Inc
- *
- * 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 (including the next
- * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
- *
- * Authors:
- * Dave Airlie <airlied@redhat.com>
- */
-
-#include <linux/dma-buf.h>
-#include <linux/reservation.h>
-
-
-#include "i915_drv.h"
-
-static struct drm_i915_gem_object *dma_buf_to_obj(struct dma_buf *buf)
-{
- return to_intel_bo(buf->priv);
-}
-
-static struct sg_table *i915_gem_map_dma_buf(struct dma_buf_attachment *attachment,
- enum dma_data_direction dir)
-{
- struct drm_i915_gem_object *obj = dma_buf_to_obj(attachment->dmabuf);
- struct sg_table *st;
- struct scatterlist *src, *dst;
- int ret, i;
-
- ret = i915_gem_object_pin_pages(obj);
- if (ret)
- goto err;
-
- /* Copy sg so that we make an independent mapping */
- st = kmalloc(sizeof(struct sg_table), GFP_KERNEL);
- if (st == NULL) {
- ret = -ENOMEM;
- goto err_unpin_pages;
- }
-
- ret = sg_alloc_table(st, obj->mm.pages->nents, GFP_KERNEL);
- if (ret)
- goto err_free;
-
- src = obj->mm.pages->sgl;
- dst = st->sgl;
- for (i = 0; i < obj->mm.pages->nents; i++) {
- sg_set_page(dst, sg_page(src), src->length, 0);
- dst = sg_next(dst);
- src = sg_next(src);
- }
-
- if (!dma_map_sg(attachment->dev, st->sgl, st->nents, dir)) {
- ret = -ENOMEM;
- goto err_free_sg;
- }
-
- return st;
-
-err_free_sg:
- sg_free_table(st);
-err_free:
- kfree(st);
-err_unpin_pages:
- i915_gem_object_unpin_pages(obj);
-err:
- return ERR_PTR(ret);
-}
-
-static void i915_gem_unmap_dma_buf(struct dma_buf_attachment *attachment,
- struct sg_table *sg,
- enum dma_data_direction dir)
-{
- struct drm_i915_gem_object *obj = dma_buf_to_obj(attachment->dmabuf);
-
- dma_unmap_sg(attachment->dev, sg->sgl, sg->nents, dir);
- sg_free_table(sg);
- kfree(sg);
-
- i915_gem_object_unpin_pages(obj);
-}
-
-static void *i915_gem_dmabuf_vmap(struct dma_buf *dma_buf)
-{
- struct drm_i915_gem_object *obj = dma_buf_to_obj(dma_buf);
-
- return i915_gem_object_pin_map(obj, I915_MAP_WB);
-}
-
-static void i915_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
-{
- struct drm_i915_gem_object *obj = dma_buf_to_obj(dma_buf);
-
- i915_gem_object_flush_map(obj);
- i915_gem_object_unpin_map(obj);
-}
-
-static void *i915_gem_dmabuf_kmap(struct dma_buf *dma_buf, unsigned long page_num)
-{
- struct drm_i915_gem_object *obj = dma_buf_to_obj(dma_buf);
- struct page *page;
-
- if (page_num >= obj->base.size >> PAGE_SHIFT)
- return NULL;
-
- if (!i915_gem_object_has_struct_page(obj))
- return NULL;
-
- if (i915_gem_object_pin_pages(obj))
- return NULL;
-
- /* Synchronisation is left to the caller (via .begin_cpu_access()) */
- page = i915_gem_object_get_page(obj, page_num);
- if (IS_ERR(page))
- goto err_unpin;
-
- return kmap(page);
-
-err_unpin:
- i915_gem_object_unpin_pages(obj);
- return NULL;
-}
-
-static void i915_gem_dmabuf_kunmap(struct dma_buf *dma_buf, unsigned long page_num, void *addr)
-{
- struct drm_i915_gem_object *obj = dma_buf_to_obj(dma_buf);
-
- kunmap(virt_to_page(addr));
- i915_gem_object_unpin_pages(obj);
-}
-
-static int i915_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma)
-{
- struct drm_i915_gem_object *obj = dma_buf_to_obj(dma_buf);
- int ret;
-
- if (obj->base.size < vma->vm_end - vma->vm_start)
- return -EINVAL;
-
- if (!obj->base.filp)
- return -ENODEV;
-
- ret = call_mmap(obj->base.filp, vma);
- if (ret)
- return ret;
-
- fput(vma->vm_file);
- vma->vm_file = get_file(obj->base.filp);
-
- return 0;
-}
-
-static int i915_gem_begin_cpu_access(struct dma_buf *dma_buf, enum dma_data_direction direction)
-{
- struct drm_i915_gem_object *obj = dma_buf_to_obj(dma_buf);
- struct drm_device *dev = obj->base.dev;
- bool write = (direction == DMA_BIDIRECTIONAL || direction == DMA_TO_DEVICE);
- int err;
-
- err = i915_gem_object_pin_pages(obj);
- if (err)
- return err;
-
- err = i915_mutex_lock_interruptible(dev);
- if (err)
- goto out;
-
- err = i915_gem_object_set_to_cpu_domain(obj, write);
- mutex_unlock(&dev->struct_mutex);
-
-out:
- i915_gem_object_unpin_pages(obj);
- return err;
-}
-
-static int i915_gem_end_cpu_access(struct dma_buf *dma_buf, enum dma_data_direction direction)
-{
- struct drm_i915_gem_object *obj = dma_buf_to_obj(dma_buf);
- struct drm_device *dev = obj->base.dev;
- int err;
-
- err = i915_gem_object_pin_pages(obj);
- if (err)
- return err;
-
- err = i915_mutex_lock_interruptible(dev);
- if (err)
- goto out;
-
- err = i915_gem_object_set_to_gtt_domain(obj, false);
- mutex_unlock(&dev->struct_mutex);
-
-out:
- i915_gem_object_unpin_pages(obj);
- return err;
-}
-
-static const struct dma_buf_ops i915_dmabuf_ops = {
- .map_dma_buf = i915_gem_map_dma_buf,
- .unmap_dma_buf = i915_gem_unmap_dma_buf,
- .release = drm_gem_dmabuf_release,
- .map = i915_gem_dmabuf_kmap,
- .unmap = i915_gem_dmabuf_kunmap,
- .mmap = i915_gem_dmabuf_mmap,
- .vmap = i915_gem_dmabuf_vmap,
- .vunmap = i915_gem_dmabuf_vunmap,
- .begin_cpu_access = i915_gem_begin_cpu_access,
- .end_cpu_access = i915_gem_end_cpu_access,
-};
-
-struct dma_buf *i915_gem_prime_export(struct drm_gem_object *gem_obj, int flags)
-{
- struct drm_i915_gem_object *obj = to_intel_bo(gem_obj);
- DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
-
- exp_info.ops = &i915_dmabuf_ops;
- exp_info.size = gem_obj->size;
- exp_info.flags = flags;
- exp_info.priv = gem_obj;
- exp_info.resv = obj->resv;
-
- if (obj->ops->dmabuf_export) {
- int ret = obj->ops->dmabuf_export(obj);
- if (ret)
- return ERR_PTR(ret);
- }
-
- return drm_gem_dmabuf_export(gem_obj->dev, &exp_info);
-}
-
-static int i915_gem_object_get_pages_dmabuf(struct drm_i915_gem_object *obj)
-{
- struct sg_table *pages;
- unsigned int sg_page_sizes;
-
- pages = dma_buf_map_attachment(obj->base.import_attach,
- DMA_BIDIRECTIONAL);
- if (IS_ERR(pages))
- return PTR_ERR(pages);
-
- sg_page_sizes = i915_sg_page_sizes(pages->sgl);
-
- __i915_gem_object_set_pages(obj, pages, sg_page_sizes);
-
- return 0;
-}
-
-static void i915_gem_object_put_pages_dmabuf(struct drm_i915_gem_object *obj,
- struct sg_table *pages)
-{
- dma_buf_unmap_attachment(obj->base.import_attach, pages,
- DMA_BIDIRECTIONAL);
-}
-
-static const struct drm_i915_gem_object_ops i915_gem_object_dmabuf_ops = {
- .get_pages = i915_gem_object_get_pages_dmabuf,
- .put_pages = i915_gem_object_put_pages_dmabuf,
-};
-
-struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
- struct dma_buf *dma_buf)
-{
- struct dma_buf_attachment *attach;
- struct drm_i915_gem_object *obj;
- int ret;
-
- /* is this one of own objects? */
- if (dma_buf->ops == &i915_dmabuf_ops) {
- obj = dma_buf_to_obj(dma_buf);
- /* is it from our device? */
- if (obj->base.dev == dev) {
- /*
- * Importing dmabuf exported from out own gem increases
- * refcount on gem itself instead of f_count of dmabuf.
- */
- return &i915_gem_object_get(obj)->base;
- }
- }
-
- /* need to attach */
- attach = dma_buf_attach(dma_buf, dev->dev);
- if (IS_ERR(attach))
- return ERR_CAST(attach);
-
- get_dma_buf(dma_buf);
-
- obj = i915_gem_object_alloc();
- if (obj == NULL) {
- ret = -ENOMEM;
- goto fail_detach;
- }
-
- drm_gem_private_object_init(dev, &obj->base, dma_buf->size);
- i915_gem_object_init(obj, &i915_gem_object_dmabuf_ops);
- obj->base.import_attach = attach;
- obj->resv = dma_buf->resv;
-
- /* We use GTT as shorthand for a coherent domain, one that is
- * neither in the GPU cache nor in the CPU cache, where all
- * writes are immediately visible in memory. (That's not strictly
- * true, but it's close! There are internal buffers such as the
- * write-combined buffer or a delay through the chipset for GTT
- * writes that do require us to treat GTT as a separate cache domain.)
- */
- obj->read_domains = I915_GEM_DOMAIN_GTT;
- obj->write_domain = 0;
-
- return &obj->base;
-
-fail_detach:
- dma_buf_detach(dma_buf, attach);
- dma_buf_put(dma_buf);
-
- return ERR_PTR(ret);
-}
-
-#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
-#include "selftests/mock_dmabuf.c"
-#include "selftests/i915_gem_dmabuf.c"
-#endif
Maxime didn't really compile-test this :-/ We need to re-apply commit e4fa8457b2197118538a1400b75c898f9faaf164 Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Fri Jun 14 22:35:25 2019 +0200 drm/prime: Align gem_prime_export with obj_funcs.export plus make sure i915_gem_dma_buf.c doesn't get zombie-resurrect. It moved in commit 10be98a77c558f8cfb823cd2777171fbb35040f6 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Tue May 28 10:29:49 2019 +0100 drm/i915: Move more GEM objects under gem/ Fixes: 03b0f2ce735e ("Merge v5.3-rc1 into drm-misc-next") Cc: Maxime Ripard <maxime.ripard@bootlin.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> --- drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c | 5 +- drivers/gpu/drm/i915/i915_gem_dmabuf.c | 336 --------------------- 2 files changed, 2 insertions(+), 339 deletions(-) delete mode 100644 drivers/gpu/drm/i915/i915_gem_dmabuf.c