psb_mmu_get_default_pd
psb_mmu_insert_pages(psb_mmu_get_default_pd(dev_priv->mmu), pages,
psb_mmu_remove_pages(psb_mmu_get_default_pd(dev_priv->mmu),
extern struct psb_mmu_pd *psb_mmu_get_default_pd(struct psb_mmu_driver
psb_mmu_get_default_pd
ret = psb_mmu_insert_pfn_sequence(psb_mmu_get_default_pd(dev_priv->mmu),
psb_mmu_set_pd_context(psb_mmu_get_default_pd(dev_priv->mmu), 0);