*
* Authors: Ben Skeggs
*/
-#include "priv.h"
+#include "ummu.h"
+#include "vmm.h"
-#include <core/gpuobj.h>
+#include <subdev/bar.h>
#include <subdev/fb.h>
-void
-nvkm_vm_map_at(struct nvkm_vma *vma, u64 delta, struct nvkm_mem *node)
-{
- struct nvkm_vm *vm = vma->vm;
- struct nvkm_mmu *mmu = vm->mmu;
- struct nvkm_mm_node *r = node->mem;
- int big = vma->node->type != mmu->func->spg_shift;
- u32 offset = vma->node->offset + (delta >> 12);
- u32 bits = vma->node->type - 12;
- u32 pde = (offset >> mmu->func->pgt_bits) - vm->fpde;
- u32 pte = (offset & ((1 << mmu->func->pgt_bits) - 1)) >> bits;
- u32 max = 1 << (mmu->func->pgt_bits - bits);
- u32 end, len;
-
- delta = 0;
- while (r) {
- u64 phys = (u64)r->offset << 12;
- u32 num = r->length >> bits;
-
- while (num) {
- struct nvkm_memory *pgt = vm->pgt[pde].mem[big];
-
- end = (pte + num);
- if (unlikely(end >= max))
- end = max;
- len = end - pte;
-
- mmu->func->map(vma, pgt, node, pte, len, phys, delta);
-
- num -= len;
- pte += len;
- if (unlikely(end >= max)) {
- phys += len << (bits + 12);
- pde++;
- pte = 0;
- }
-
- delta += (u64)len << vma->node->type;
- }
- r = r->next;
- };
+#include <nvif/if500d.h>
+#include <nvif/if900d.h>
- mmu->func->flush(vm);
-}
+struct nvkm_mmu_ptp {
+ struct nvkm_mmu_pt *pt;
+ struct list_head head;
+ u8 shift;
+ u16 mask;
+ u16 free;
+};
static void
-nvkm_vm_map_sg_table(struct nvkm_vma *vma, u64 delta, u64 length,
- struct nvkm_mem *mem)
+nvkm_mmu_ptp_put(struct nvkm_mmu *mmu, bool force, struct nvkm_mmu_pt *pt)
{
- struct nvkm_vm *vm = vma->vm;
- struct nvkm_mmu *mmu = vm->mmu;
- int big = vma->node->type != mmu->func->spg_shift;
- u32 offset = vma->node->offset + (delta >> 12);
- u32 bits = vma->node->type - 12;
- u32 num = length >> vma->node->type;
- u32 pde = (offset >> mmu->func->pgt_bits) - vm->fpde;
- u32 pte = (offset & ((1 << mmu->func->pgt_bits) - 1)) >> bits;
- u32 max = 1 << (mmu->func->pgt_bits - bits);
- unsigned m, sglen;
- u32 end, len;
- int i;
- struct scatterlist *sg;
-
- for_each_sg(mem->sg->sgl, sg, mem->sg->nents, i) {
- struct nvkm_memory *pgt = vm->pgt[pde].mem[big];
- sglen = sg_dma_len(sg) >> PAGE_SHIFT;
-
- end = pte + sglen;
- if (unlikely(end >= max))
- end = max;
- len = end - pte;
-
- for (m = 0; m < len; m++) {
- dma_addr_t addr = sg_dma_address(sg) + (m << PAGE_SHIFT);
-
- mmu->func->map_sg(vma, pgt, mem, pte, 1, &addr);
- num--;
- pte++;
-
- if (num == 0)
- goto finish;
- }
- if (unlikely(end >= max)) {
- pde++;
- pte = 0;
- }
- if (m < sglen) {
- for (; m < sglen; m++) {
- dma_addr_t addr = sg_dma_address(sg) + (m << PAGE_SHIFT);
-
- mmu->func->map_sg(vma, pgt, mem, pte, 1, &addr);
- num--;
- pte++;
- if (num == 0)
- goto finish;
- }
- }
-
+ const int slot = pt->base >> pt->ptp->shift;
+ struct nvkm_mmu_ptp *ptp = pt->ptp;
+
+ /* If there were no free slots in the parent allocation before,
+ * there will be now, so return PTP to the cache.
+ */
+ if (!ptp->free)
+ list_add(&ptp->head, &mmu->ptp.list);
+ ptp->free |= BIT(slot);
+
+ /* If there's no more sub-allocations, destroy PTP. */
+ if (ptp->free == ptp->mask) {
+ nvkm_mmu_ptc_put(mmu, force, &ptp->pt);
+ list_del(&ptp->head);
+ kfree(ptp);
}
-finish:
- mmu->func->flush(vm);
+
+ kfree(pt);
}
-static void
-nvkm_vm_map_sg(struct nvkm_vma *vma, u64 delta, u64 length,
- struct nvkm_mem *mem)
+struct nvkm_mmu_pt *
+nvkm_mmu_ptp_get(struct nvkm_mmu *mmu, u32 size, bool zero)
{
- struct nvkm_vm *vm = vma->vm;
- struct nvkm_mmu *mmu = vm->mmu;
- dma_addr_t *list = mem->pages;
- int big = vma->node->type != mmu->func->spg_shift;
- u32 offset = vma->node->offset + (delta >> 12);
- u32 bits = vma->node->type - 12;
- u32 num = length >> vma->node->type;
- u32 pde = (offset >> mmu->func->pgt_bits) - vm->fpde;
- u32 pte = (offset & ((1 << mmu->func->pgt_bits) - 1)) >> bits;
- u32 max = 1 << (mmu->func->pgt_bits - bits);
- u32 end, len;
-
- while (num) {
- struct nvkm_memory *pgt = vm->pgt[pde].mem[big];
-
- end = (pte + num);
- if (unlikely(end >= max))
- end = max;
- len = end - pte;
-
- mmu->func->map_sg(vma, pgt, mem, pte, len, list);
-
- num -= len;
- pte += len;
- list += len;
- if (unlikely(end >= max)) {
- pde++;
- pte = 0;
+ struct nvkm_mmu_pt *pt;
+ struct nvkm_mmu_ptp *ptp;
+ int slot;
+
+ if (!(pt = kzalloc(sizeof(*pt), GFP_KERNEL)))
+ return NULL;
+
+ ptp = list_first_entry_or_null(&mmu->ptp.list, typeof(*ptp), head);
+ if (!ptp) {
+ /* Need to allocate a new parent to sub-allocate from. */
+ if (!(ptp = kmalloc(sizeof(*ptp), GFP_KERNEL))) {
+ kfree(pt);
+ return NULL;
}
- }
- mmu->func->flush(vm);
-}
+ ptp->pt = nvkm_mmu_ptc_get(mmu, 0x1000, 0x1000, false);
+ if (!ptp->pt) {
+ kfree(ptp);
+ kfree(pt);
+ return NULL;
+ }
-void
-nvkm_vm_map(struct nvkm_vma *vma, struct nvkm_mem *node)
-{
- if (node->sg)
- nvkm_vm_map_sg_table(vma, 0, node->size << 12, node);
- else
- if (node->pages)
- nvkm_vm_map_sg(vma, 0, node->size << 12, node);
- else
- nvkm_vm_map_at(vma, 0, node);
+ ptp->shift = order_base_2(size);
+ slot = nvkm_memory_size(ptp->pt->memory) >> ptp->shift;
+ ptp->mask = (1 << slot) - 1;
+ ptp->free = ptp->mask;
+ list_add(&ptp->head, &mmu->ptp.list);
+ }
+ pt->ptp = ptp;
+ pt->sub = true;
+
+ /* Sub-allocate from parent object, removing PTP from cache
+ * if there's no more free slots left.
+ */
+ slot = __ffs(ptp->free);
+ ptp->free &= ~BIT(slot);
+ if (!ptp->free)
+ list_del(&ptp->head);
+
+ pt->memory = pt->ptp->pt->memory;
+ pt->base = slot << ptp->shift;
+ pt->addr = pt->ptp->pt->addr + pt->base;
+ return pt;
}
-void
-nvkm_vm_unmap_at(struct nvkm_vma *vma, u64 delta, u64 length)
+struct nvkm_mmu_ptc {
+ struct list_head head;
+ struct list_head item;
+ u32 size;
+ u32 refs;
+};
+
+static inline struct nvkm_mmu_ptc *
+nvkm_mmu_ptc_find(struct nvkm_mmu *mmu, u32 size)
{
- struct nvkm_vm *vm = vma->vm;
- struct nvkm_mmu *mmu = vm->mmu;
- int big = vma->node->type != mmu->func->spg_shift;
- u32 offset = vma->node->offset + (delta >> 12);
- u32 bits = vma->node->type - 12;
- u32 num = length >> vma->node->type;
- u32 pde = (offset >> mmu->func->pgt_bits) - vm->fpde;
- u32 pte = (offset & ((1 << mmu->func->pgt_bits) - 1)) >> bits;
- u32 max = 1 << (mmu->func->pgt_bits - bits);
- u32 end, len;
-
- while (num) {
- struct nvkm_memory *pgt = vm->pgt[pde].mem[big];
-
- end = (pte + num);
- if (unlikely(end >= max))
- end = max;
- len = end - pte;
-
- mmu->func->unmap(vma, pgt, pte, len);
-
- num -= len;
- pte += len;
- if (unlikely(end >= max)) {
- pde++;
- pte = 0;
- }
+ struct nvkm_mmu_ptc *ptc;
+
+ list_for_each_entry(ptc, &mmu->ptc.list, head) {
+ if (ptc->size == size)
+ return ptc;
}
- mmu->func->flush(vm);
-}
+ ptc = kmalloc(sizeof(*ptc), GFP_KERNEL);
+ if (ptc) {
+ INIT_LIST_HEAD(&ptc->item);
+ ptc->size = size;
+ ptc->refs = 0;
+ list_add(&ptc->head, &mmu->ptc.list);
+ }
-void
-nvkm_vm_unmap(struct nvkm_vma *vma)
-{
- nvkm_vm_unmap_at(vma, 0, (u64)vma->node->length << 12);
+ return ptc;
}
-static void
-nvkm_vm_unmap_pgt(struct nvkm_vm *vm, int big, u32 fpde, u32 lpde)
+void
+nvkm_mmu_ptc_put(struct nvkm_mmu *mmu, bool force, struct nvkm_mmu_pt **ppt)
{
- struct nvkm_mmu *mmu = vm->mmu;
- struct nvkm_vm_pgd *vpgd;
- struct nvkm_vm_pgt *vpgt;
- struct nvkm_memory *pgt;
- u32 pde;
-
- for (pde = fpde; pde <= lpde; pde++) {
- vpgt = &vm->pgt[pde - vm->fpde];
- if (--vpgt->refcount[big])
- continue;
-
- pgt = vpgt->mem[big];
- vpgt->mem[big] = NULL;
-
- list_for_each_entry(vpgd, &vm->pgd_list, head) {
- mmu->func->map_pgt(vpgd->obj, pde, vpgt->mem);
+ struct nvkm_mmu_pt *pt = *ppt;
+ if (pt) {
+ /* Handle sub-allocated page tables. */
+ if (pt->sub) {
+ mutex_lock(&mmu->ptp.mutex);
+ nvkm_mmu_ptp_put(mmu, force, pt);
+ mutex_unlock(&mmu->ptp.mutex);
+ return;
}
- nvkm_memory_del(&pgt);
+ /* Either cache or free the object. */
+ mutex_lock(&mmu->ptc.mutex);
+ if (pt->ptc->refs < 8 /* Heuristic. */ && !force) {
+ list_add_tail(&pt->head, &pt->ptc->item);
+ pt->ptc->refs++;
+ } else {
+ nvkm_memory_unref(&pt->memory);
+ kfree(pt);
+ }
+ mutex_unlock(&mmu->ptc.mutex);
}
}
-static int
-nvkm_vm_map_pgt(struct nvkm_vm *vm, u32 pde, u32 type)
+struct nvkm_mmu_pt *
+nvkm_mmu_ptc_get(struct nvkm_mmu *mmu, u32 size, u32 align, bool zero)
{
- struct nvkm_mmu *mmu = vm->mmu;
- struct nvkm_vm_pgt *vpgt = &vm->pgt[pde - vm->fpde];
- struct nvkm_vm_pgd *vpgd;
- int big = (type != mmu->func->spg_shift);
- u32 pgt_size;
+ struct nvkm_mmu_ptc *ptc;
+ struct nvkm_mmu_pt *pt;
int ret;
- pgt_size = (1 << (mmu->func->pgt_bits + 12)) >> type;
- pgt_size *= 8;
-
- ret = nvkm_memory_new(mmu->subdev.device, NVKM_MEM_TARGET_INST,
- pgt_size, 0x1000, true, &vpgt->mem[big]);
- if (unlikely(ret))
- return ret;
-
- list_for_each_entry(vpgd, &vm->pgd_list, head) {
- mmu->func->map_pgt(vpgd->obj, pde, vpgt->mem);
+ /* Sub-allocated page table (ie. GP100 LPT). */
+ if (align < 0x1000) {
+ mutex_lock(&mmu->ptp.mutex);
+ pt = nvkm_mmu_ptp_get(mmu, align, zero);
+ mutex_unlock(&mmu->ptp.mutex);
+ return pt;
}
- vpgt->refcount[big]++;
- return 0;
-}
-
-int
-nvkm_vm_get(struct nvkm_vm *vm, u64 size, u32 page_shift, u32 access,
- struct nvkm_vma *vma)
-{
- struct nvkm_mmu *mmu = vm->mmu;
- u32 align = (1 << page_shift) >> 12;
- u32 msize = size >> 12;
- u32 fpde, lpde, pde;
- int ret;
-
- mutex_lock(&vm->mutex);
- ret = nvkm_mm_head(&vm->mm, 0, page_shift, msize, msize, align,
- &vma->node);
- if (unlikely(ret != 0)) {
- mutex_unlock(&vm->mutex);
- return ret;
+ /* Lookup cache for this page table size. */
+ mutex_lock(&mmu->ptc.mutex);
+ ptc = nvkm_mmu_ptc_find(mmu, size);
+ if (!ptc) {
+ mutex_unlock(&mmu->ptc.mutex);
+ return NULL;
}
- fpde = (vma->node->offset >> mmu->func->pgt_bits);
- lpde = (vma->node->offset + vma->node->length - 1) >> mmu->func->pgt_bits;
-
- for (pde = fpde; pde <= lpde; pde++) {
- struct nvkm_vm_pgt *vpgt = &vm->pgt[pde - vm->fpde];
- int big = (vma->node->type != mmu->func->spg_shift);
+ /* If there's a free PT in the cache, reuse it. */
+ pt = list_first_entry_or_null(&ptc->item, typeof(*pt), head);
+ if (pt) {
+ if (zero)
+ nvkm_fo64(pt->memory, 0, 0, size >> 3);
+ list_del(&pt->head);
+ ptc->refs--;
+ mutex_unlock(&mmu->ptc.mutex);
+ return pt;
+ }
+ mutex_unlock(&mmu->ptc.mutex);
- if (likely(vpgt->refcount[big])) {
- vpgt->refcount[big]++;
- continue;
- }
+ /* No such luck, we need to allocate. */
+ if (!(pt = kmalloc(sizeof(*pt), GFP_KERNEL)))
+ return NULL;
+ pt->ptc = ptc;
+ pt->sub = false;
- ret = nvkm_vm_map_pgt(vm, pde, vma->node->type);
- if (ret) {
- if (pde != fpde)
- nvkm_vm_unmap_pgt(vm, big, fpde, pde - 1);
- nvkm_mm_free(&vm->mm, &vma->node);
- mutex_unlock(&vm->mutex);
- return ret;
- }
+ ret = nvkm_memory_new(mmu->subdev.device, NVKM_MEM_TARGET_INST,
+ size, align, zero, &pt->memory);
+ if (ret) {
+ kfree(pt);
+ return NULL;
}
- mutex_unlock(&vm->mutex);
- vma->vm = NULL;
- nvkm_vm_ref(vm, &vma->vm, NULL);
- vma->offset = (u64)vma->node->offset << 12;
- vma->access = access;
- return 0;
+ pt->base = 0;
+ pt->addr = nvkm_memory_addr(pt->memory);
+ return pt;
}
void
-nvkm_vm_put(struct nvkm_vma *vma)
+nvkm_mmu_ptc_dump(struct nvkm_mmu *mmu)
{
- struct nvkm_mmu *mmu;
- struct nvkm_vm *vm;
- u32 fpde, lpde;
-
- if (unlikely(vma->node == NULL))
- return;
- vm = vma->vm;
- mmu = vm->mmu;
-
- fpde = (vma->node->offset >> mmu->func->pgt_bits);
- lpde = (vma->node->offset + vma->node->length - 1) >> mmu->func->pgt_bits;
-
- mutex_lock(&vm->mutex);
- nvkm_vm_unmap_pgt(vm, vma->node->type != mmu->func->spg_shift, fpde, lpde);
- nvkm_mm_free(&vm->mm, &vma->node);
- mutex_unlock(&vm->mutex);
-
- nvkm_vm_ref(NULL, &vma->vm, NULL);
-}
-
-int
-nvkm_vm_boot(struct nvkm_vm *vm, u64 size)
-{
- struct nvkm_mmu *mmu = vm->mmu;
- struct nvkm_memory *pgt;
- int ret;
-
- ret = nvkm_memory_new(mmu->subdev.device, NVKM_MEM_TARGET_INST,
- (size >> mmu->func->spg_shift) * 8, 0x1000, true, &pgt);
- if (ret == 0) {
- vm->pgt[0].refcount[0] = 1;
- vm->pgt[0].mem[0] = pgt;
- nvkm_memory_boot(pgt, vm);
+ struct nvkm_mmu_ptc *ptc;
+ list_for_each_entry(ptc, &mmu->ptc.list, head) {
+ struct nvkm_mmu_pt *pt, *tt;
+ list_for_each_entry_safe(pt, tt, &ptc->item, head) {
+ nvkm_memory_unref(&pt->memory);
+ list_del(&pt->head);
+ kfree(pt);
+ }
}
-
- return ret;
}
-int
-nvkm_vm_create(struct nvkm_mmu *mmu, u64 offset, u64 length, u64 mm_offset,
- u32 block, struct lock_class_key *key, struct nvkm_vm **pvm)
+static void
+nvkm_mmu_ptc_fini(struct nvkm_mmu *mmu)
{
- static struct lock_class_key _key;
- struct nvkm_vm *vm;
- u64 mm_length = (offset + length) - mm_offset;
- int ret;
-
- vm = kzalloc(sizeof(*vm), GFP_KERNEL);
- if (!vm)
- return -ENOMEM;
-
- __mutex_init(&vm->mutex, "&vm->mutex", key ? key : &_key);
- INIT_LIST_HEAD(&vm->pgd_list);
- vm->mmu = mmu;
- kref_init(&vm->refcount);
- vm->fpde = offset >> (mmu->func->pgt_bits + 12);
- vm->lpde = (offset + length - 1) >> (mmu->func->pgt_bits + 12);
-
- vm->pgt = vzalloc((vm->lpde - vm->fpde + 1) * sizeof(*vm->pgt));
- if (!vm->pgt) {
- kfree(vm);
- return -ENOMEM;
- }
+ struct nvkm_mmu_ptc *ptc, *ptct;
- ret = nvkm_mm_init(&vm->mm, mm_offset >> 12, mm_length >> 12,
- block >> 12);
- if (ret) {
- vfree(vm->pgt);
- kfree(vm);
- return ret;
+ list_for_each_entry_safe(ptc, ptct, &mmu->ptc.list, head) {
+ WARN_ON(!list_empty(&ptc->item));
+ list_del(&ptc->head);
+ kfree(ptc);
}
-
- *pvm = vm;
-
- return 0;
}
-int
-nvkm_vm_new(struct nvkm_device *device, u64 offset, u64 length, u64 mm_offset,
- struct lock_class_key *key, struct nvkm_vm **pvm)
+static void
+nvkm_mmu_ptc_init(struct nvkm_mmu *mmu)
{
- struct nvkm_mmu *mmu = device->mmu;
- if (!mmu->func->create)
- return -EINVAL;
- return mmu->func->create(mmu, offset, length, mm_offset, key, pvm);
+ mutex_init(&mmu->ptc.mutex);
+ INIT_LIST_HEAD(&mmu->ptc.list);
+ mutex_init(&mmu->ptp.mutex);
+ INIT_LIST_HEAD(&mmu->ptp.list);
}
-static int
-nvkm_vm_link(struct nvkm_vm *vm, struct nvkm_gpuobj *pgd)
+static void
+nvkm_mmu_type(struct nvkm_mmu *mmu, int heap, u8 type)
{
- struct nvkm_mmu *mmu = vm->mmu;
- struct nvkm_vm_pgd *vpgd;
- int i;
-
- if (!pgd)
- return 0;
-
- vpgd = kzalloc(sizeof(*vpgd), GFP_KERNEL);
- if (!vpgd)
- return -ENOMEM;
-
- vpgd->obj = pgd;
-
- mutex_lock(&vm->mutex);
- for (i = vm->fpde; i <= vm->lpde; i++)
- mmu->func->map_pgt(pgd, i, vm->pgt[i - vm->fpde].mem);
- list_add(&vpgd->head, &vm->pgd_list);
- mutex_unlock(&vm->mutex);
- return 0;
+ if (heap >= 0 && !WARN_ON(mmu->type_nr == ARRAY_SIZE(mmu->type))) {
+ mmu->type[mmu->type_nr].type = type | mmu->heap[heap].type;
+ mmu->type[mmu->type_nr].heap = heap;
+ mmu->type_nr++;
+ }
}
-static void
-nvkm_vm_unlink(struct nvkm_vm *vm, struct nvkm_gpuobj *mpgd)
+static int
+nvkm_mmu_heap(struct nvkm_mmu *mmu, u8 type, u64 size)
{
- struct nvkm_vm_pgd *vpgd, *tmp;
-
- if (!mpgd)
- return;
-
- mutex_lock(&vm->mutex);
- list_for_each_entry_safe(vpgd, tmp, &vm->pgd_list, head) {
- if (vpgd->obj == mpgd) {
- list_del(&vpgd->head);
- kfree(vpgd);
- break;
+ if (size) {
+ if (!WARN_ON(mmu->heap_nr == ARRAY_SIZE(mmu->heap))) {
+ mmu->heap[mmu->heap_nr].type = type;
+ mmu->heap[mmu->heap_nr].size = size;
+ return mmu->heap_nr++;
}
}
- mutex_unlock(&vm->mutex);
+ return -EINVAL;
}
static void
-nvkm_vm_del(struct kref *kref)
+nvkm_mmu_host(struct nvkm_mmu *mmu)
{
- struct nvkm_vm *vm = container_of(kref, typeof(*vm), refcount);
- struct nvkm_vm_pgd *vpgd, *tmp;
-
- list_for_each_entry_safe(vpgd, tmp, &vm->pgd_list, head) {
- nvkm_vm_unlink(vm, vpgd->obj);
- }
-
- nvkm_mm_fini(&vm->mm);
- vfree(vm->pgt);
- kfree(vm);
+ struct nvkm_device *device = mmu->subdev.device;
+ u8 type = NVKM_MEM_KIND * !!mmu->func->kind_sys;
+ int heap;
+
+ /* Non-mappable system memory. */
+ heap = nvkm_mmu_heap(mmu, NVKM_MEM_HOST, ~0ULL);
+ nvkm_mmu_type(mmu, heap, type);
+
+ /* Non-coherent, cached, system memory.
+ *
+ * Block-linear mappings of system memory must be done through
+ * BAR1, and cannot be supported on systems where we're unable
+ * to map BAR1 with write-combining.
+ */
+ type |= NVKM_MEM_MAPPABLE;
+ if (!device->bar || device->bar->iomap_uncached)
+ nvkm_mmu_type(mmu, heap, type & ~NVKM_MEM_KIND);
+ else
+ nvkm_mmu_type(mmu, heap, type);
+
+ /* Coherent, cached, system memory.
+ *
+ * Unsupported on systems that aren't able to support snooped
+ * mappings, and also for block-linear mappings which must be
+ * done through BAR1.
+ */
+ type |= NVKM_MEM_COHERENT;
+ if (device->func->cpu_coherent)
+ nvkm_mmu_type(mmu, heap, type & ~NVKM_MEM_KIND);
+
+ /* Uncached system memory. */
+ nvkm_mmu_type(mmu, heap, type |= NVKM_MEM_UNCACHED);
}
-int
-nvkm_vm_ref(struct nvkm_vm *ref, struct nvkm_vm **ptr, struct nvkm_gpuobj *pgd)
+static void
+nvkm_mmu_vram(struct nvkm_mmu *mmu)
{
- if (ref) {
- int ret = nvkm_vm_link(ref, pgd);
- if (ret)
- return ret;
-
- kref_get(&ref->refcount);
- }
+ struct nvkm_device *device = mmu->subdev.device;
+ struct nvkm_mm *mm = &device->fb->ram->vram;
+ const u32 sizeN = nvkm_mm_heap_size(mm, NVKM_RAM_MM_NORMAL);
+ const u32 sizeU = nvkm_mm_heap_size(mm, NVKM_RAM_MM_NOMAP);
+ const u32 sizeM = nvkm_mm_heap_size(mm, NVKM_RAM_MM_MIXED);
+ u8 type = NVKM_MEM_KIND * !!mmu->func->kind;
+ u8 heap = NVKM_MEM_VRAM;
+ int heapM, heapN, heapU;
+
+ /* Mixed-memory doesn't support compression or display. */
+ heapM = nvkm_mmu_heap(mmu, heap, sizeM << NVKM_RAM_MM_SHIFT);
+
+ heap |= NVKM_MEM_COMP;
+ heap |= NVKM_MEM_DISP;
+ heapN = nvkm_mmu_heap(mmu, heap, sizeN << NVKM_RAM_MM_SHIFT);
+ heapU = nvkm_mmu_heap(mmu, heap, sizeU << NVKM_RAM_MM_SHIFT);
+
+ /* Add non-mappable VRAM types first so that they're preferred
+ * over anything else. Mixed-memory will be slower than other
+ * heaps, it's prioritised last.
+ */
+ nvkm_mmu_type(mmu, heapU, type);
+ nvkm_mmu_type(mmu, heapN, type);
+ nvkm_mmu_type(mmu, heapM, type);
+
+ /* Add host memory types next, under the assumption that users
+ * wanting mappable memory want to use them as staging buffers
+ * or the like.
+ */
+ nvkm_mmu_host(mmu);
+
+ /* Mappable VRAM types go last, as they're basically the worst
+ * possible type to ask for unless there's no other choice.
+ */
+ if (device->bar) {
+ /* Write-combined BAR1 access. */
+ type |= NVKM_MEM_MAPPABLE;
+ if (!device->bar->iomap_uncached) {
+ nvkm_mmu_type(mmu, heapN, type);
+ nvkm_mmu_type(mmu, heapM, type);
+ }
- if (*ptr) {
- nvkm_vm_unlink(*ptr, pgd);
- kref_put(&(*ptr)->refcount, nvkm_vm_del);
+ /* Uncached BAR1 access. */
+ type |= NVKM_MEM_COHERENT;
+ type |= NVKM_MEM_UNCACHED;
+ nvkm_mmu_type(mmu, heapN, type);
+ nvkm_mmu_type(mmu, heapM, type);
}
-
- *ptr = ref;
- return 0;
}
static int
nvkm_mmu_oneinit(struct nvkm_subdev *subdev)
{
struct nvkm_mmu *mmu = nvkm_mmu(subdev);
- if (mmu->func->oneinit)
- return mmu->func->oneinit(mmu);
+
+ /* Determine available memory types. */
+ if (mmu->subdev.device->fb && mmu->subdev.device->fb->ram)
+ nvkm_mmu_vram(mmu);
+ else
+ nvkm_mmu_host(mmu);
+
+ if (mmu->func->vmm.global) {
+ int ret = nvkm_vmm_new(subdev->device, 0, 0, NULL, 0, NULL,
+ "gart", &mmu->vmm);
+ if (ret)
+ return ret;
+ }
+
return 0;
}
nvkm_mmu_dtor(struct nvkm_subdev *subdev)
{
struct nvkm_mmu *mmu = nvkm_mmu(subdev);
- if (mmu->func->dtor)
- return mmu->func->dtor(mmu);
+
+ nvkm_vmm_unref(&mmu->vmm);
+
+ nvkm_mmu_ptc_fini(mmu);
return mmu;
}
{
nvkm_subdev_ctor(&nvkm_mmu, device, index, &mmu->subdev);
mmu->func = func;
- mmu->limit = func->limit;
mmu->dma_bits = func->dma_bits;
- mmu->lpg_shift = func->lpg_shift;
+ nvkm_mmu_ptc_init(mmu);
+ mmu->user.ctor = nvkm_ummu_new;
+ mmu->user.base = func->mmu.user;
}
int
projects / mirror_ubuntu-bionic-kernel.git / blobdiff