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drm/nouveau: Initialize GEM object before TTM object

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TTM assumes that drivers initialize the embedded GEM object before
calling the ttm_bo_init() function. This is not currently the case
in the Nouveau driver. Fix this by splitting up nouveau_bo_new()
into nouveau_bo_alloc() and nouveau_bo_init() so that the GEM can
be initialized before TTM BO initialization when necessary.

Fixes: b96f3e7c80 ("drm/ttm: use gem vma_node")
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190814093524.GA31345@ulmo
This commit is contained in:
Thierry Reding
2019-08-14 11:00:48 +02:00
parent 343bbb1a7f
commit 019cbd4a4f
4 changed files with 77 additions and 41 deletions
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29
drivers/gpu/drm/nouveau/nouveau_gem.c
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@@ -188,11 +188,23 @@ nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
if (domain & NOUVEAU_GEM_DOMAIN_COHERENT)
flags |= TTM_PL_FLAG_UNCACHED;
ret = nouveau_bo_new(cli, size, align, flags, tile_mode,
tile_flags, NULL, NULL, pnvbo);
if (ret)
nvbo = nouveau_bo_alloc(cli, size, flags, tile_mode, tile_flags);
if (IS_ERR(nvbo))
return PTR_ERR(nvbo);
/* Initialize the embedded gem-object. We return a single gem-reference
* to the caller, instead of a normal nouveau_bo ttm reference. */
ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
if (ret) {
nouveau_bo_ref(NULL, &nvbo);
return ret;
nvbo = *pnvbo;
}
ret = nouveau_bo_init(nvbo, size, align, flags, NULL, NULL);
if (ret) {
nouveau_bo_ref(NULL, &nvbo);
return ret;
}
/* we restrict allowed domains on nv50+ to only the types
* that were requested at creation time. not possibly on
@@ -203,15 +215,8 @@ nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
nvbo->valid_domains &= domain;
/* Initialize the embedded gem-object. We return a single gem-reference
* to the caller, instead of a normal nouveau_bo ttm reference. */
ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, nvbo->bo.mem.size);
if (ret) {
nouveau_bo_ref(NULL, pnvbo);
return -ENOMEM;
}
nvbo->bo.persistent_swap_storage = nvbo->bo.base.filp;
*pnvbo = nvbo;
return 0;
}