44 	const int slot = pt->base >> pt->ptp->shift;  in nvkm_mmu_ptp_put()
45 	struct nvkm_mmu_ptp *ptp = pt->ptp;  in nvkm_mmu_ptp_put()  local
48 	 * there will be now, so return PTP to the cache.  in nvkm_mmu_ptp_put()
50 	if (!ptp->free)  in nvkm_mmu_ptp_put()
51 		list_add(&ptp->head, &mmu->ptp.list);  in nvkm_mmu_ptp_put()
52 	ptp->free |= BIT(slot);  in nvkm_mmu_ptp_put()
54 	/* If there's no more sub-allocations, destroy PTP. */  in nvkm_mmu_ptp_put()
55 	if (ptp->free == ptp->mask) {  in nvkm_mmu_ptp_put()
56 		nvkm_mmu_ptc_put(mmu, force, &ptp->pt);  in nvkm_mmu_ptp_put()
57 		list_del(&ptp->head);  in nvkm_mmu_ptp_put()
58 		kfree(ptp);  in nvkm_mmu_ptp_put()
68 	struct nvkm_mmu_ptp *ptp;  in nvkm_mmu_ptp_get()  local
74 	ptp = list_first_entry_or_null(&mmu->ptp.list, typeof(*ptp), head);  in nvkm_mmu_ptp_get()
75 	if (!ptp) {  in nvkm_mmu_ptp_get()
77 		if (!(ptp = kmalloc(sizeof(*ptp), GFP_KERNEL))) {  in nvkm_mmu_ptp_get()
82 		ptp->pt = nvkm_mmu_ptc_get(mmu, 0x1000, 0x1000, false);  in nvkm_mmu_ptp_get()
83 		if (!ptp->pt) {  in nvkm_mmu_ptp_get()
84 			kfree(ptp);  in nvkm_mmu_ptp_get()
89 		ptp->shift = order_base_2(size);  in nvkm_mmu_ptp_get()
90 		slot = nvkm_memory_size(ptp->pt->memory) >> ptp->shift;  in nvkm_mmu_ptp_get()
91 		ptp->mask = (1 << slot) - 1;  in nvkm_mmu_ptp_get()
92 		ptp->free = ptp->mask;  in nvkm_mmu_ptp_get()
93 		list_add(&ptp->head, &mmu->ptp.list);  in nvkm_mmu_ptp_get()
95 	pt->ptp = ptp;  in nvkm_mmu_ptp_get()
98 	/* Sub-allocate from parent object, removing PTP from cache  in nvkm_mmu_ptp_get()
101 	slot = __ffs(ptp->free);  in nvkm_mmu_ptp_get()
102 	ptp->free &= ~BIT(slot);  in nvkm_mmu_ptp_get()
103 	if (!ptp->free)  in nvkm_mmu_ptp_get()
104 		list_del(&ptp->head);  in nvkm_mmu_ptp_get()
106 	pt->memory = pt->ptp->pt->memory;  in nvkm_mmu_ptp_get()
107 	pt->base = slot << ptp->shift;  in nvkm_mmu_ptp_get()
108 	pt->addr = pt->ptp->pt->addr + pt->base;  in nvkm_mmu_ptp_get()
147 			mutex_lock(&mmu->ptp.mutex);  in nvkm_mmu_ptc_put()
149 			mutex_unlock(&mmu->ptp.mutex);  in nvkm_mmu_ptc_put()
175 		mutex_lock(&mmu->ptp.mutex);  in nvkm_mmu_ptc_get()
177 		mutex_unlock(&mmu->ptp.mutex);  in nvkm_mmu_ptc_get()
250 	mutex_init(&mmu->ptp.mutex);  in nvkm_mmu_ptc_init()
251 	INIT_LIST_HEAD(&mmu->ptp.list);  in nvkm_mmu_ptc_init()