diff options
| -rw-r--r-- | drivers/accel/qaic/qaic_data.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/accel/qaic/qaic_data.c b/drivers/accel/qaic/qaic_data.c index adabc4028bb2..85c155c74fca 100644 --- a/drivers/accel/qaic/qaic_data.c +++ b/drivers/accel/qaic/qaic_data.c @@ -644,8 +644,36 @@ static void qaic_free_object(struct drm_gem_object *obj) kfree(bo); } +static struct sg_table *qaic_get_sg_table(struct drm_gem_object *obj) +{ + struct qaic_bo *bo = to_qaic_bo(obj); + struct scatterlist *sg, *sg_in; + struct sg_table *sgt, *sgt_in; + int i; + + sgt_in = bo->sgt; + + sgt = kmalloc(sizeof(*sgt), GFP_KERNEL); + if (!sgt) + return ERR_PTR(-ENOMEM); + + if (sg_alloc_table(sgt, sgt_in->orig_nents, GFP_KERNEL)) { + kfree(sgt); + return ERR_PTR(-ENOMEM); + } + + sg = sgt->sgl; + for_each_sgtable_sg(sgt_in, sg_in, i) { + memcpy(sg, sg_in, sizeof(*sg)); + sg = sg_next(sg); + } + + return sgt; +} + static const struct drm_gem_object_funcs qaic_gem_funcs = { .free = qaic_free_object, + .get_sg_table = qaic_get_sg_table, .print_info = qaic_gem_print_info, .mmap = qaic_gem_object_mmap, .vm_ops = &drm_vm_ops, |