From 019cbd4a4feb3aa3a917d78e7110e3011bbff6d5 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Wed, 14 Aug 2019 11:00:48 +0200 Subject: [PATCH] drm/nouveau: Initialize GEM object before TTM object 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: b96f3e7c8069 ("drm/ttm: use gem vma_node") Acked-by: Gerd Hoffmann Acked-by: Ben Skeggs Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20190814093524.GA31345@ulmo --- drivers/gpu/drm/nouveau/nouveau_bo.c | 69 +++++++++++++++++++++------------ drivers/gpu/drm/nouveau/nouveau_bo.h | 4 ++ drivers/gpu/drm/nouveau/nouveau_gem.c | 29 ++++++++------ drivers/gpu/drm/nouveau/nouveau_prime.c | 16 +++++--- 4 files changed, 77 insertions(+), 41 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index e0b1bbe..e918b43 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -185,31 +185,24 @@ nouveau_bo_fixup_align(struct nouveau_bo *nvbo, u32 flags, *size = roundup_64(*size, PAGE_SIZE); } -int -nouveau_bo_new(struct nouveau_cli *cli, u64 size, int align, - uint32_t flags, uint32_t tile_mode, uint32_t tile_flags, - struct sg_table *sg, struct dma_resv *robj, - struct nouveau_bo **pnvbo) +struct nouveau_bo * +nouveau_bo_alloc(struct nouveau_cli *cli, u64 size, u32 flags, u32 tile_mode, + u32 tile_flags) { struct nouveau_drm *drm = cli->drm; struct nouveau_bo *nvbo; struct nvif_mmu *mmu = &cli->mmu; struct nvif_vmm *vmm = cli->svm.cli ? &cli->svm.vmm : &cli->vmm.vmm; - size_t acc_size; - int type = ttm_bo_type_device; - int ret, i, pi = -1; + int i, pi = -1; if (!size) { NV_WARN(drm, "skipped size %016llx\n", size); - return -EINVAL; + return ERR_PTR(-EINVAL); } - if (sg) - type = ttm_bo_type_sg; - nvbo = kzalloc(sizeof(struct nouveau_bo), GFP_KERNEL); if (!nvbo) - return -ENOMEM; + return ERR_PTR(-ENOMEM); INIT_LIST_HEAD(&nvbo->head); INIT_LIST_HEAD(&nvbo->entry); INIT_LIST_HEAD(&nvbo->vma_list); @@ -231,7 +224,7 @@ nouveau_bo_new(struct nouveau_cli *cli, u64 size, int align, nvbo->kind = (tile_flags & 0x0000ff00) >> 8; if (!nvif_mmu_kind_valid(mmu, nvbo->kind)) { kfree(nvbo); - return -EINVAL; + return ERR_PTR(-EINVAL); } nvbo->comp = mmu->kind[nvbo->kind] != nvbo->kind; @@ -241,7 +234,7 @@ nouveau_bo_new(struct nouveau_cli *cli, u64 size, int align, nvbo->comp = (tile_flags & 0x00030000) >> 16; if (!nvif_mmu_kind_valid(mmu, nvbo->kind)) { kfree(nvbo); - return -EINVAL; + return ERR_PTR(-EINVAL); } } else { nvbo->zeta = (tile_flags & 0x00000007); @@ -278,7 +271,7 @@ nouveau_bo_new(struct nouveau_cli *cli, u64 size, int align, } if (WARN_ON(pi < 0)) - return -EINVAL; + return ERR_PTR(-EINVAL); /* Disable compression if suitable settings couldn't be found. */ if (nvbo->comp && !vmm->page[pi].comp) { @@ -288,23 +281,51 @@ nouveau_bo_new(struct nouveau_cli *cli, u64 size, int align, } nvbo->page = vmm->page[pi].shift; + return nvbo; +} + +int +nouveau_bo_init(struct nouveau_bo *nvbo, u64 size, int align, u32 flags, + struct sg_table *sg, struct dma_resv *robj) +{ + int type = sg ? ttm_bo_type_sg : ttm_bo_type_device; + size_t acc_size; + int ret; + + acc_size = ttm_bo_dma_acc_size(nvbo->bo.bdev, size, sizeof(*nvbo)); + nouveau_bo_fixup_align(nvbo, flags, &align, &size); nvbo->bo.mem.num_pages = size >> PAGE_SHIFT; nouveau_bo_placement_set(nvbo, flags, 0); - acc_size = ttm_bo_dma_acc_size(&drm->ttm.bdev, size, - sizeof(struct nouveau_bo)); - - ret = ttm_bo_init(&drm->ttm.bdev, &nvbo->bo, size, - type, &nvbo->placement, - align >> PAGE_SHIFT, false, acc_size, sg, - robj, nouveau_bo_del_ttm); - + ret = ttm_bo_init(nvbo->bo.bdev, &nvbo->bo, size, type, + &nvbo->placement, align >> PAGE_SHIFT, false, + acc_size, sg, robj, nouveau_bo_del_ttm); if (ret) { /* ttm will call nouveau_bo_del_ttm if it fails.. */ return ret; } + return 0; +} + +int +nouveau_bo_new(struct nouveau_cli *cli, u64 size, int align, + uint32_t flags, uint32_t tile_mode, uint32_t tile_flags, + struct sg_table *sg, struct dma_resv *robj, + struct nouveau_bo **pnvbo) +{ + struct nouveau_bo *nvbo; + int ret; + + nvbo = nouveau_bo_alloc(cli, size, flags, tile_mode, tile_flags); + if (IS_ERR(nvbo)) + return PTR_ERR(nvbo); + + ret = nouveau_bo_init(nvbo, size, align, flags, sg, robj); + if (ret) + return ret; + *pnvbo = nvbo; return 0; } diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.h b/drivers/gpu/drm/nouveau/nouveau_bo.h index 3ae8483..62930d8 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.h +++ b/drivers/gpu/drm/nouveau/nouveau_bo.h @@ -71,6 +71,10 @@ nouveau_bo_ref(struct nouveau_bo *ref, struct nouveau_bo **pnvbo) extern struct ttm_bo_driver nouveau_bo_driver; void nouveau_bo_move_init(struct nouveau_drm *); +struct nouveau_bo *nouveau_bo_alloc(struct nouveau_cli *, u64 size, u32 flags, + u32 tile_mode, u32 tile_flags); +int nouveau_bo_init(struct nouveau_bo *, u64 size, int align, u32 flags, + struct sg_table *sg, struct dma_resv *robj); int nouveau_bo_new(struct nouveau_cli *, u64 size, int align, u32 flags, u32 tile_mode, u32 tile_flags, struct sg_table *sg, struct dma_resv *robj, diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c index c77302f..c2bfc05 100644 --- a/drivers/gpu/drm/nouveau/nouveau_gem.c +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -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; + } + + ret = nouveau_bo_init(nvbo, size, align, flags, NULL, NULL); + if (ret) { + nouveau_bo_ref(NULL, &nvbo); return ret; - nvbo = *pnvbo; + } /* 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; } diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c index 7262ced..0247903 100644 --- a/drivers/gpu/drm/nouveau/nouveau_prime.c +++ b/drivers/gpu/drm/nouveau/nouveau_prime.c @@ -63,28 +63,34 @@ struct drm_gem_object *nouveau_gem_prime_import_sg_table(struct drm_device *dev, struct nouveau_drm *drm = nouveau_drm(dev); struct nouveau_bo *nvbo; struct dma_resv *robj = attach->dmabuf->resv; + size_t size = attach->dmabuf->size; u32 flags = 0; int ret; flags = TTM_PL_FLAG_TT; dma_resv_lock(robj, NULL); - ret = nouveau_bo_new(&drm->client, attach->dmabuf->size, 0, flags, 0, 0, - sg, robj, &nvbo); + nvbo = nouveau_bo_alloc(&drm->client, size, flags, 0, 0); dma_resv_unlock(robj); - if (ret) - return ERR_PTR(ret); + if (IS_ERR(nvbo)) + return ERR_CAST(nvbo); nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_GART; /* 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(dev, &nvbo->bo.base, nvbo->bo.mem.size); + ret = drm_gem_object_init(dev, &nvbo->bo.base, size); if (ret) { nouveau_bo_ref(NULL, &nvbo); return ERR_PTR(-ENOMEM); } + ret = nouveau_bo_init(nvbo, size, 0, flags, sg, robj); + if (ret) { + nouveau_bo_ref(NULL, &nvbo); + return ERR_PTR(ret); + } + return &nvbo->bo.base; } -- 2.7.4