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()
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()
74 	ptp = list_first_entry_or_null(&mmu->ptp.list, typeof(*ptp), head);  in nvkm_mmu_ptp_get()
76 		/* Need to allocate a new parent to sub-allocate from. */  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()
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()
96 	pt->sub = true;  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()
124 	list_for_each_entry(ptc, &mmu->ptc.list, head) {  in nvkm_mmu_ptc_find()
125 		if (ptc->size == size)  in nvkm_mmu_ptc_find()
131 		INIT_LIST_HEAD(&ptc->item);  in nvkm_mmu_ptc_find()
132 		ptc->size = size;  in nvkm_mmu_ptc_find()
133 		ptc->refs = 0;  in nvkm_mmu_ptc_find()
134 		list_add(&ptc->head, &mmu->ptc.list);  in nvkm_mmu_ptc_find()
145 		/* Handle sub-allocated page tables. */  in nvkm_mmu_ptc_put()
146 		if (pt->sub) {  in nvkm_mmu_ptc_put()
147 			mutex_lock(&mmu->ptp.mutex);  in nvkm_mmu_ptc_put()
149 			mutex_unlock(&mmu->ptp.mutex);  in nvkm_mmu_ptc_put()
154 		mutex_lock(&mmu->ptc.mutex);  in nvkm_mmu_ptc_put()
155 		if (pt->ptc->refs < 8 /* Heuristic. */ && !force) {  in nvkm_mmu_ptc_put()
156 			list_add_tail(&pt->head, &pt->ptc->item);  in nvkm_mmu_ptc_put()
157 			pt->ptc->refs++;  in nvkm_mmu_ptc_put()
159 			nvkm_memory_unref(&pt->memory);  in nvkm_mmu_ptc_put()
162 		mutex_unlock(&mmu->ptc.mutex);  in nvkm_mmu_ptc_put()
173 	/* Sub-allocated page table (ie. GP100 LPT). */  in nvkm_mmu_ptc_get()
175 		mutex_lock(&mmu->ptp.mutex);  in nvkm_mmu_ptc_get()
177 		mutex_unlock(&mmu->ptp.mutex);  in nvkm_mmu_ptc_get()
182 	mutex_lock(&mmu->ptc.mutex);  in nvkm_mmu_ptc_get()
185 		mutex_unlock(&mmu->ptc.mutex);  in nvkm_mmu_ptc_get()
190 	pt = list_first_entry_or_null(&ptc->item, typeof(*pt), head);  in nvkm_mmu_ptc_get()
193 			nvkm_fo64(pt->memory, 0, 0, size >> 3);  in nvkm_mmu_ptc_get()
194 		list_del(&pt->head);  in nvkm_mmu_ptc_get()
195 		ptc->refs--;  in nvkm_mmu_ptc_get()
196 		mutex_unlock(&mmu->ptc.mutex);  in nvkm_mmu_ptc_get()
199 	mutex_unlock(&mmu->ptc.mutex);  in nvkm_mmu_ptc_get()
204 	pt->ptc = ptc;  in nvkm_mmu_ptc_get()
205 	pt->sub = false;  in nvkm_mmu_ptc_get()
207 	ret = nvkm_memory_new(mmu->subdev.device, NVKM_MEM_TARGET_INST,  in nvkm_mmu_ptc_get()
208 			      size, align, zero, &pt->memory);  in nvkm_mmu_ptc_get()
214 	pt->base = 0;  in nvkm_mmu_ptc_get()
215 	pt->addr = nvkm_memory_addr(pt->memory);  in nvkm_mmu_ptc_get()
223 	list_for_each_entry(ptc, &mmu->ptc.list, head) {  in nvkm_mmu_ptc_dump()
225 		list_for_each_entry_safe(pt, tt, &ptc->item, head) {  in nvkm_mmu_ptc_dump()
226 			nvkm_memory_unref(&pt->memory);  in nvkm_mmu_ptc_dump()
227 			list_del(&pt->head);  in nvkm_mmu_ptc_dump()
238 	list_for_each_entry_safe(ptc, ptct, &mmu->ptc.list, head) {  in nvkm_mmu_ptc_fini()
239 		WARN_ON(!list_empty(&ptc->item));  in nvkm_mmu_ptc_fini()
240 		list_del(&ptc->head);  in nvkm_mmu_ptc_fini()
248 	mutex_init(&mmu->ptc.mutex);  in nvkm_mmu_ptc_init()
249 	INIT_LIST_HEAD(&mmu->ptc.list);  in nvkm_mmu_ptc_init()
250 	mutex_init(&mmu->ptp.mutex);  in nvkm_mmu_ptc_init()
251 	INIT_LIST_HEAD(&mmu->ptp.list);  in nvkm_mmu_ptc_init()
257 	if (heap >= 0 && !WARN_ON(mmu->type_nr == ARRAY_SIZE(mmu->type))) {  in nvkm_mmu_type()
258 		mmu->type[mmu->type_nr].type = type | mmu->heap[heap].type;  in nvkm_mmu_type()
259 		mmu->type[mmu->type_nr].heap = heap;  in nvkm_mmu_type()
260 		mmu->type_nr++;  in nvkm_mmu_type()
268 		if (!WARN_ON(mmu->heap_nr == ARRAY_SIZE(mmu->heap))) {  in nvkm_mmu_heap()
269 			mmu->heap[mmu->heap_nr].type = type;  in nvkm_mmu_heap()
270 			mmu->heap[mmu->heap_nr].size = size;  in nvkm_mmu_heap()
271 			return mmu->heap_nr++;  in nvkm_mmu_heap()
274 	return -EINVAL;  in nvkm_mmu_heap()
280 	struct nvkm_device *device = mmu->subdev.device;  in nvkm_mmu_host()
281 	u8 type = NVKM_MEM_KIND * !!mmu->func->kind_sys;  in nvkm_mmu_host()
284 	/* Non-mappable system memory. */  in nvkm_mmu_host()
288 	/* Non-coherent, cached, system memory.  in nvkm_mmu_host()
290 	 * Block-linear mappings of system memory must be done through  in nvkm_mmu_host()
292 	 * to map BAR1 with write-combining.  in nvkm_mmu_host()
295 	if (!device->bar || device->bar->iomap_uncached)  in nvkm_mmu_host()
300 	/* Coherent, cached, system memory.  in nvkm_mmu_host()
303 	 * mappings, and also for block-linear mappings which must be  in nvkm_mmu_host()
307 	if (device->func->cpu_coherent)  in nvkm_mmu_host()
310 	/* Uncached system memory. */  in nvkm_mmu_host()
317 	struct nvkm_device *device = mmu->subdev.device;  in nvkm_mmu_vram()
318 	struct nvkm_mm *mm = &device->fb->ram->vram;  in nvkm_mmu_vram()
322 	u8 type = NVKM_MEM_KIND * !!mmu->func->kind;  in nvkm_mmu_vram()
326 	/* Mixed-memory doesn't support compression or display. */  in nvkm_mmu_vram()
334 	/* Add non-mappable VRAM types first so that they're preferred  in nvkm_mmu_vram()
335 	 * over anything else.  Mixed-memory will be slower than other  in nvkm_mmu_vram()
351 	if (device->bar) {  in nvkm_mmu_vram()
352 		/* Write-combined BAR1 access. */  in nvkm_mmu_vram()
354 		if (!device->bar->iomap_uncached) {  in nvkm_mmu_vram()
373 	if (mmu->subdev.device->fb && mmu->subdev.device->fb->ram)  in nvkm_mmu_oneinit()
378 	if (mmu->func->vmm.global) {  in nvkm_mmu_oneinit()
379 		int ret = nvkm_vmm_new(subdev->device, 0, 0, NULL, 0, NULL,  in nvkm_mmu_oneinit()
380 				       "gart", &mmu->vmm);  in nvkm_mmu_oneinit()
392 	if (mmu->func->init)  in nvkm_mmu_init()
393 		mmu->func->init(mmu);  in nvkm_mmu_init()
402 	nvkm_vmm_unref(&mmu->vmm);  in nvkm_mmu_dtor()
405 	mutex_destroy(&mmu->mutex);  in nvkm_mmu_dtor()
407 	if (mmu->func->dtor)  in nvkm_mmu_dtor()
408 		mmu->func->dtor(mmu);  in nvkm_mmu_dtor()
424 	nvkm_subdev_ctor(&nvkm_mmu, device, type, inst, &mmu->subdev);  in nvkm_mmu_ctor()
425 	mmu->func = func;  in nvkm_mmu_ctor()
426 	mmu->dma_bits = func->dma_bits;  in nvkm_mmu_ctor()
428 	mutex_init(&mmu->mutex);  in nvkm_mmu_ctor()
429 	mmu->user.ctor = nvkm_ummu_new;  in nvkm_mmu_ctor()
430 	mmu->user.base = func->mmu.user;  in nvkm_mmu_ctor()
438 		return -ENOMEM;  in nvkm_mmu_new_()