From d808097627e51d53cf9b1aa13239b5c4a6adaefb Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Mon, 22 Jul 2019 23:18:16 +0200 Subject: [PATCH] drm/i915: Fix up broken merge Maxime didn't really compile-test this :-/ We need to re-apply commit e4fa8457b2197118538a1400b75c898f9faaf164 Author: Daniel Vetter 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 Date: Tue May 28 10:29:49 2019 +0100 drm/i915: Move more GEM objects under gem/ v2: Remember the selftests (Chris). Fixes: 03b0f2ce735e ("Merge v5.3-rc1 into drm-misc-next") Cc: Maxime Ripard Cc: Chris Wilson Reviewed-by: Chris Wilson Acked-by: Dave Airlie Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190722213759.26612-1-daniel.vetter@ffwll.ch --- drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c | 5 +- .../drm/i915/gem/selftests/i915_gem_dmabuf.c | 8 +- drivers/gpu/drm/i915/i915_gem_dmabuf.c | 336 --------------- .../gpu/drm/i915/selftests/i915_gem_dmabuf.c | 404 ------------------ 4 files changed, 6 insertions(+), 747 deletions(-) delete mode 100644 drivers/gpu/drm/i915/i915_gem_dmabuf.c delete mode 100644 drivers/gpu/drm/i915/selftests/i915_gem_dmabuf.c diff --git a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c index cbf1701d3acc..570b20ad9e58 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c @@ -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) diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c index e3a64edef918..d85d1ce273ca 100644 --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c @@ -20,7 +20,7 @@ static int igt_dmabuf_export(void *arg) if (IS_ERR(obj)) return PTR_ERR(obj); - dmabuf = i915_gem_prime_export(&i915->drm, &obj->base, 0); + dmabuf = i915_gem_prime_export(&obj->base, 0); i915_gem_object_put(obj); if (IS_ERR(dmabuf)) { pr_err("i915_gem_prime_export failed with err=%d\n", @@ -44,7 +44,7 @@ static int igt_dmabuf_import_self(void *arg) if (IS_ERR(obj)) return PTR_ERR(obj); - dmabuf = i915_gem_prime_export(&i915->drm, &obj->base, 0); + dmabuf = i915_gem_prime_export(&obj->base, 0); if (IS_ERR(dmabuf)) { pr_err("i915_gem_prime_export failed with err=%d\n", (int)PTR_ERR(dmabuf)); @@ -219,7 +219,7 @@ static int igt_dmabuf_export_vmap(void *arg) if (IS_ERR(obj)) return PTR_ERR(obj); - dmabuf = i915_gem_prime_export(&i915->drm, &obj->base, 0); + dmabuf = i915_gem_prime_export(&obj->base, 0); if (IS_ERR(dmabuf)) { pr_err("i915_gem_prime_export failed with err=%d\n", (int)PTR_ERR(dmabuf)); @@ -266,7 +266,7 @@ static int igt_dmabuf_export_kmap(void *arg) if (IS_ERR(obj)) return PTR_ERR(obj); - dmabuf = i915_gem_prime_export(&i915->drm, &obj->base, 0); + dmabuf = i915_gem_prime_export(&obj->base, 0); i915_gem_object_put(obj); if (IS_ERR(dmabuf)) { err = PTR_ERR(dmabuf); diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c deleted file mode 100644 index 54ecab91b3a9..000000000000 --- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c +++ /dev/null @@ -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 - */ - -#include -#include - - -#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 diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/selftests/i915_gem_dmabuf.c deleted file mode 100644 index 84eb978fe39f..000000000000 --- a/drivers/gpu/drm/i915/selftests/i915_gem_dmabuf.c +++ /dev/null @@ -1,404 +0,0 @@ -/* - * Copyright © 2016 Intel Corporation - * - * 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. - * - */ - -#include "../i915_selftest.h" - -#include "mock_gem_device.h" -#include "mock_dmabuf.h" - -static int igt_dmabuf_export(void *arg) -{ - struct drm_i915_private *i915 = arg; - struct drm_i915_gem_object *obj; - struct dma_buf *dmabuf; - - obj = i915_gem_object_create(i915, PAGE_SIZE); - if (IS_ERR(obj)) - return PTR_ERR(obj); - - dmabuf = i915_gem_prime_export(&obj->base, 0); - i915_gem_object_put(obj); - if (IS_ERR(dmabuf)) { - pr_err("i915_gem_prime_export failed with err=%d\n", - (int)PTR_ERR(dmabuf)); - return PTR_ERR(dmabuf); - } - - dma_buf_put(dmabuf); - return 0; -} - -static int igt_dmabuf_import_self(void *arg) -{ - struct drm_i915_private *i915 = arg; - struct drm_i915_gem_object *obj; - struct drm_gem_object *import; - struct dma_buf *dmabuf; - int err; - - obj = i915_gem_object_create(i915, PAGE_SIZE); - if (IS_ERR(obj)) - return PTR_ERR(obj); - - dmabuf = i915_gem_prime_export(&obj->base, 0); - if (IS_ERR(dmabuf)) { - pr_err("i915_gem_prime_export failed with err=%d\n", - (int)PTR_ERR(dmabuf)); - err = PTR_ERR(dmabuf); - goto out; - } - - import = i915_gem_prime_import(&i915->drm, dmabuf); - if (IS_ERR(import)) { - pr_err("i915_gem_prime_import failed with err=%d\n", - (int)PTR_ERR(import)); - err = PTR_ERR(import); - goto out_dmabuf; - } - - if (import != &obj->base) { - pr_err("i915_gem_prime_import created a new object!\n"); - err = -EINVAL; - goto out_import; - } - - err = 0; -out_import: - i915_gem_object_put(to_intel_bo(import)); -out_dmabuf: - dma_buf_put(dmabuf); -out: - i915_gem_object_put(obj); - return err; -} - -static int igt_dmabuf_import(void *arg) -{ - struct drm_i915_private *i915 = arg; - struct drm_i915_gem_object *obj; - struct dma_buf *dmabuf; - void *obj_map, *dma_map; - u32 pattern[] = { 0, 0xaa, 0xcc, 0x55, 0xff }; - int err, i; - - dmabuf = mock_dmabuf(1); - if (IS_ERR(dmabuf)) - return PTR_ERR(dmabuf); - - obj = to_intel_bo(i915_gem_prime_import(&i915->drm, dmabuf)); - if (IS_ERR(obj)) { - pr_err("i915_gem_prime_import failed with err=%d\n", - (int)PTR_ERR(obj)); - err = PTR_ERR(obj); - goto out_dmabuf; - } - - if (obj->base.dev != &i915->drm) { - pr_err("i915_gem_prime_import created a non-i915 object!\n"); - err = -EINVAL; - goto out_obj; - } - - if (obj->base.size != PAGE_SIZE) { - pr_err("i915_gem_prime_import is wrong size found %lld, expected %ld\n", - (long long)obj->base.size, PAGE_SIZE); - err = -EINVAL; - goto out_obj; - } - - dma_map = dma_buf_vmap(dmabuf); - if (!dma_map) { - pr_err("dma_buf_vmap failed\n"); - err = -ENOMEM; - goto out_obj; - } - - if (0) { /* Can not yet map dmabuf */ - obj_map = i915_gem_object_pin_map(obj, I915_MAP_WB); - if (IS_ERR(obj_map)) { - err = PTR_ERR(obj_map); - pr_err("i915_gem_object_pin_map failed with err=%d\n", err); - goto out_dma_map; - } - - for (i = 0; i < ARRAY_SIZE(pattern); i++) { - memset(dma_map, pattern[i], PAGE_SIZE); - if (memchr_inv(obj_map, pattern[i], PAGE_SIZE)) { - err = -EINVAL; - pr_err("imported vmap not all set to %x!\n", pattern[i]); - i915_gem_object_unpin_map(obj); - goto out_dma_map; - } - } - - for (i = 0; i < ARRAY_SIZE(pattern); i++) { - memset(obj_map, pattern[i], PAGE_SIZE); - if (memchr_inv(dma_map, pattern[i], PAGE_SIZE)) { - err = -EINVAL; - pr_err("exported vmap not all set to %x!\n", pattern[i]); - i915_gem_object_unpin_map(obj); - goto out_dma_map; - } - } - - i915_gem_object_unpin_map(obj); - } - - err = 0; -out_dma_map: - dma_buf_vunmap(dmabuf, dma_map); -out_obj: - i915_gem_object_put(obj); -out_dmabuf: - dma_buf_put(dmabuf); - return err; -} - -static int igt_dmabuf_import_ownership(void *arg) -{ - struct drm_i915_private *i915 = arg; - struct drm_i915_gem_object *obj; - struct dma_buf *dmabuf; - void *ptr; - int err; - - dmabuf = mock_dmabuf(1); - if (IS_ERR(dmabuf)) - return PTR_ERR(dmabuf); - - ptr = dma_buf_vmap(dmabuf); - if (!ptr) { - pr_err("dma_buf_vmap failed\n"); - err = -ENOMEM; - goto err_dmabuf; - } - - memset(ptr, 0xc5, PAGE_SIZE); - dma_buf_vunmap(dmabuf, ptr); - - obj = to_intel_bo(i915_gem_prime_import(&i915->drm, dmabuf)); - if (IS_ERR(obj)) { - pr_err("i915_gem_prime_import failed with err=%d\n", - (int)PTR_ERR(obj)); - err = PTR_ERR(obj); - goto err_dmabuf; - } - - dma_buf_put(dmabuf); - - err = i915_gem_object_pin_pages(obj); - if (err) { - pr_err("i915_gem_object_pin_pages failed with err=%d\n", err); - goto out_obj; - } - - err = 0; - i915_gem_object_unpin_pages(obj); -out_obj: - i915_gem_object_put(obj); - return err; - -err_dmabuf: - dma_buf_put(dmabuf); - return err; -} - -static int igt_dmabuf_export_vmap(void *arg) -{ - struct drm_i915_private *i915 = arg; - struct drm_i915_gem_object *obj; - struct dma_buf *dmabuf; - void *ptr; - int err; - - obj = i915_gem_object_create(i915, PAGE_SIZE); - if (IS_ERR(obj)) - return PTR_ERR(obj); - - dmabuf = i915_gem_prime_export(&obj->base, 0); - if (IS_ERR(dmabuf)) { - pr_err("i915_gem_prime_export failed with err=%d\n", - (int)PTR_ERR(dmabuf)); - err = PTR_ERR(dmabuf); - goto err_obj; - } - i915_gem_object_put(obj); - - ptr = dma_buf_vmap(dmabuf); - if (!ptr) { - pr_err("dma_buf_vmap failed\n"); - err = -ENOMEM; - goto out; - } - - if (memchr_inv(ptr, 0, dmabuf->size)) { - pr_err("Exported object not initialiased to zero!\n"); - err = -EINVAL; - goto out; - } - - memset(ptr, 0xc5, dmabuf->size); - - err = 0; - dma_buf_vunmap(dmabuf, ptr); -out: - dma_buf_put(dmabuf); - return err; - -err_obj: - i915_gem_object_put(obj); - return err; -} - -static int igt_dmabuf_export_kmap(void *arg) -{ - struct drm_i915_private *i915 = arg; - struct drm_i915_gem_object *obj; - struct dma_buf *dmabuf; - void *ptr; - int err; - - obj = i915_gem_object_create(i915, 2*PAGE_SIZE); - if (IS_ERR(obj)) - return PTR_ERR(obj); - - dmabuf = i915_gem_prime_export(&obj->base, 0); - i915_gem_object_put(obj); - if (IS_ERR(dmabuf)) { - err = PTR_ERR(dmabuf); - pr_err("i915_gem_prime_export failed with err=%d\n", err); - return err; - } - - ptr = dma_buf_kmap(dmabuf, 0); - if (!ptr) { - pr_err("dma_buf_kmap failed\n"); - err = -ENOMEM; - goto err; - } - - if (memchr_inv(ptr, 0, PAGE_SIZE)) { - dma_buf_kunmap(dmabuf, 0, ptr); - pr_err("Exported page[0] not initialiased to zero!\n"); - err = -EINVAL; - goto err; - } - - memset(ptr, 0xc5, PAGE_SIZE); - dma_buf_kunmap(dmabuf, 0, ptr); - - ptr = i915_gem_object_pin_map(obj, I915_MAP_WB); - if (IS_ERR(ptr)) { - err = PTR_ERR(ptr); - pr_err("i915_gem_object_pin_map failed with err=%d\n", err); - goto err; - } - memset(ptr + PAGE_SIZE, 0xaa, PAGE_SIZE); - i915_gem_object_flush_map(obj); - i915_gem_object_unpin_map(obj); - - ptr = dma_buf_kmap(dmabuf, 1); - if (!ptr) { - pr_err("dma_buf_kmap failed\n"); - err = -ENOMEM; - goto err; - } - - if (memchr_inv(ptr, 0xaa, PAGE_SIZE)) { - dma_buf_kunmap(dmabuf, 1, ptr); - pr_err("Exported page[1] not set to 0xaa!\n"); - err = -EINVAL; - goto err; - } - - memset(ptr, 0xc5, PAGE_SIZE); - dma_buf_kunmap(dmabuf, 1, ptr); - - ptr = dma_buf_kmap(dmabuf, 0); - if (!ptr) { - pr_err("dma_buf_kmap failed\n"); - err = -ENOMEM; - goto err; - } - if (memchr_inv(ptr, 0xc5, PAGE_SIZE)) { - dma_buf_kunmap(dmabuf, 0, ptr); - pr_err("Exported page[0] did not retain 0xc5!\n"); - err = -EINVAL; - goto err; - } - dma_buf_kunmap(dmabuf, 0, ptr); - - ptr = dma_buf_kmap(dmabuf, 2); - if (ptr) { - pr_err("Erroneously kmapped beyond the end of the object!\n"); - dma_buf_kunmap(dmabuf, 2, ptr); - err = -EINVAL; - goto err; - } - - ptr = dma_buf_kmap(dmabuf, -1); - if (ptr) { - pr_err("Erroneously kmapped before the start of the object!\n"); - dma_buf_kunmap(dmabuf, -1, ptr); - err = -EINVAL; - goto err; - } - - err = 0; -err: - dma_buf_put(dmabuf); - return err; -} - -int i915_gem_dmabuf_mock_selftests(void) -{ - static const struct i915_subtest tests[] = { - SUBTEST(igt_dmabuf_export), - SUBTEST(igt_dmabuf_import_self), - SUBTEST(igt_dmabuf_import), - SUBTEST(igt_dmabuf_import_ownership), - SUBTEST(igt_dmabuf_export_vmap), - SUBTEST(igt_dmabuf_export_kmap), - }; - struct drm_i915_private *i915; - int err; - - i915 = mock_gem_device(); - if (!i915) - return -ENOMEM; - - err = i915_subtests(tests, i915); - - drm_dev_put(&i915->drm); - return err; -} - -int i915_gem_dmabuf_live_selftests(struct drm_i915_private *i915) -{ - static const struct i915_subtest tests[] = { - SUBTEST(igt_dmabuf_export), - }; - - return i915_subtests(tests, i915); -} -- 2.30.2