summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/nouveau/nouveau_vm.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_vm.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_vm.c493
1 files changed, 0 insertions, 493 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_vm.c b/drivers/gpu/drm/nouveau/nouveau_vm.c
deleted file mode 100644
index 11edd5e91a0a..000000000000
--- a/drivers/gpu/drm/nouveau/nouveau_vm.c
+++ /dev/null
@@ -1,493 +0,0 @@
-/*
- * Copyright 2010 Red Hat Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- *
- * Authors: Ben Skeggs
- */
-
-#include "drmP.h"
-#include "nouveau_drv.h"
-#include "nouveau_mm.h"
-#include "nouveau_vm.h"
-
-void
-nouveau_vm_map_at(struct nouveau_vma *vma, u64 delta, struct nouveau_mem *node)
-{
- struct nouveau_vm *vm = vma->vm;
- struct nouveau_mm_node *r;
- int big = vma->node->type != vm->spg_shift;
- u32 offset = vma->node->offset + (delta >> 12);
- u32 bits = vma->node->type - 12;
- u32 pde = (offset >> vm->pgt_bits) - vm->fpde;
- u32 pte = (offset & ((1 << vm->pgt_bits) - 1)) >> bits;
- u32 max = 1 << (vm->pgt_bits - bits);
- u32 end, len;
-
- delta = 0;
- list_for_each_entry(r, &node->regions, rl_entry) {
- u64 phys = (u64)r->offset << 12;
- u32 num = r->length >> bits;
-
- while (num) {
- struct nouveau_gpuobj *pgt = vm->pgt[pde].obj[big];
-
- end = (pte + num);
- if (unlikely(end >= max))
- end = max;
- len = end - pte;
-
- vm->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;
- }
- }
-
- vm->flush(vm);
-}
-
-void
-nouveau_vm_map(struct nouveau_vma *vma, struct nouveau_mem *node)
-{
- nouveau_vm_map_at(vma, 0, node);
-}
-
-void
-nouveau_vm_map_sg_table(struct nouveau_vma *vma, u64 delta, u64 length,
- struct nouveau_mem *mem)
-{
- struct nouveau_vm *vm = vma->vm;
- int big = vma->node->type != vm->spg_shift;
- u32 offset = vma->node->offset + (delta >> 12);
- u32 bits = vma->node->type - 12;
- u32 num = length >> vma->node->type;
- u32 pde = (offset >> vm->pgt_bits) - vm->fpde;
- u32 pte = (offset & ((1 << vm->pgt_bits) - 1)) >> bits;
- u32 max = 1 << (vm->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 nouveau_gpuobj *pgt = vm->pgt[pde].obj[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);
-
- vm->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);
-
- vm->map_sg(vma, pgt, mem, pte, 1, &addr);
- num--;
- pte++;
- if (num == 0)
- goto finish;
- }
- }
-
- }
-finish:
- vm->flush(vm);
-}
-
-void
-nouveau_vm_map_sg(struct nouveau_vma *vma, u64 delta, u64 length,
- struct nouveau_mem *mem)
-{
- struct nouveau_vm *vm = vma->vm;
- dma_addr_t *list = mem->pages;
- int big = vma->node->type != vm->spg_shift;
- u32 offset = vma->node->offset + (delta >> 12);
- u32 bits = vma->node->type - 12;
- u32 num = length >> vma->node->type;
- u32 pde = (offset >> vm->pgt_bits) - vm->fpde;
- u32 pte = (offset & ((1 << vm->pgt_bits) - 1)) >> bits;
- u32 max = 1 << (vm->pgt_bits - bits);
- u32 end, len;
-
- while (num) {
- struct nouveau_gpuobj *pgt = vm->pgt[pde].obj[big];
-
- end = (pte + num);
- if (unlikely(end >= max))
- end = max;
- len = end - pte;
-
- vm->map_sg(vma, pgt, mem, pte, len, list);
-
- num -= len;
- pte += len;
- list += len;
- if (unlikely(end >= max)) {
- pde++;
- pte = 0;
- }
- }
-
- vm->flush(vm);
-}
-
-void
-nouveau_vm_unmap_at(struct nouveau_vma *vma, u64 delta, u64 length)
-{
- struct nouveau_vm *vm = vma->vm;
- int big = vma->node->type != vm->spg_shift;
- u32 offset = vma->node->offset + (delta >> 12);
- u32 bits = vma->node->type - 12;
- u32 num = length >> vma->node->type;
- u32 pde = (offset >> vm->pgt_bits) - vm->fpde;
- u32 pte = (offset & ((1 << vm->pgt_bits) - 1)) >> bits;
- u32 max = 1 << (vm->pgt_bits - bits);
- u32 end, len;
-
- while (num) {
- struct nouveau_gpuobj *pgt = vm->pgt[pde].obj[big];
-
- end = (pte + num);
- if (unlikely(end >= max))
- end = max;
- len = end - pte;
-
- vm->unmap(pgt, pte, len);
-
- num -= len;
- pte += len;
- if (unlikely(end >= max)) {
- pde++;
- pte = 0;
- }
- }
-
- vm->flush(vm);
-}
-
-void
-nouveau_vm_unmap(struct nouveau_vma *vma)
-{
- nouveau_vm_unmap_at(vma, 0, (u64)vma->node->length << 12);
-}
-
-static void
-nouveau_vm_unmap_pgt(struct nouveau_vm *vm, int big, u32 fpde, u32 lpde)
-{
- struct nouveau_vm_pgd *vpgd;
- struct nouveau_vm_pgt *vpgt;
- struct nouveau_gpuobj *pgt;
- u32 pde;
-
- for (pde = fpde; pde <= lpde; pde++) {
- vpgt = &vm->pgt[pde - vm->fpde];
- if (--vpgt->refcount[big])
- continue;
-
- pgt = vpgt->obj[big];
- vpgt->obj[big] = NULL;
-
- list_for_each_entry(vpgd, &vm->pgd_list, head) {
- vm->map_pgt(vpgd->obj, pde, vpgt->obj);
- }
-
- mutex_unlock(&vm->mm.mutex);
- nouveau_gpuobj_ref(NULL, &pgt);
- mutex_lock(&vm->mm.mutex);
- }
-}
-
-static int
-nouveau_vm_map_pgt(struct nouveau_vm *vm, u32 pde, u32 type)
-{
- struct nouveau_vm_pgt *vpgt = &vm->pgt[pde - vm->fpde];
- struct nouveau_vm_pgd *vpgd;
- struct nouveau_gpuobj *pgt;
- int big = (type != vm->spg_shift);
- u32 pgt_size;
- int ret;
-
- pgt_size = (1 << (vm->pgt_bits + 12)) >> type;
- pgt_size *= 8;
-
- mutex_unlock(&vm->mm.mutex);
- ret = nouveau_gpuobj_new(vm->dev, NULL, pgt_size, 0x1000,
- NVOBJ_FLAG_ZERO_ALLOC, &pgt);
- mutex_lock(&vm->mm.mutex);
- if (unlikely(ret))
- return ret;
-
- /* someone beat us to filling the PDE while we didn't have the lock */
- if (unlikely(vpgt->refcount[big]++)) {
- mutex_unlock(&vm->mm.mutex);
- nouveau_gpuobj_ref(NULL, &pgt);
- mutex_lock(&vm->mm.mutex);
- return 0;
- }
-
- vpgt->obj[big] = pgt;
- list_for_each_entry(vpgd, &vm->pgd_list, head) {
- vm->map_pgt(vpgd->obj, pde, vpgt->obj);
- }
-
- return 0;
-}
-
-int
-nouveau_vm_get(struct nouveau_vm *vm, u64 size, u32 page_shift,
- u32 access, struct nouveau_vma *vma)
-{
- u32 align = (1 << page_shift) >> 12;
- u32 msize = size >> 12;
- u32 fpde, lpde, pde;
- int ret;
-
- mutex_lock(&vm->mm.mutex);
- ret = nouveau_mm_get(&vm->mm, page_shift, msize, 0, align, &vma->node);
- if (unlikely(ret != 0)) {
- mutex_unlock(&vm->mm.mutex);
- return ret;
- }
-
- fpde = (vma->node->offset >> vm->pgt_bits);
- lpde = (vma->node->offset + vma->node->length - 1) >> vm->pgt_bits;
- for (pde = fpde; pde <= lpde; pde++) {
- struct nouveau_vm_pgt *vpgt = &vm->pgt[pde - vm->fpde];
- int big = (vma->node->type != vm->spg_shift);
-
- if (likely(vpgt->refcount[big])) {
- vpgt->refcount[big]++;
- continue;
- }
-
- ret = nouveau_vm_map_pgt(vm, pde, vma->node->type);
- if (ret) {
- if (pde != fpde)
- nouveau_vm_unmap_pgt(vm, big, fpde, pde - 1);
- nouveau_mm_put(&vm->mm, vma->node);
- mutex_unlock(&vm->mm.mutex);
- vma->node = NULL;
- return ret;
- }
- }
- mutex_unlock(&vm->mm.mutex);
-
- vma->vm = vm;
- vma->offset = (u64)vma->node->offset << 12;
- vma->access = access;
- return 0;
-}
-
-void
-nouveau_vm_put(struct nouveau_vma *vma)
-{
- struct nouveau_vm *vm = vma->vm;
- u32 fpde, lpde;
-
- if (unlikely(vma->node == NULL))
- return;
- fpde = (vma->node->offset >> vm->pgt_bits);
- lpde = (vma->node->offset + vma->node->length - 1) >> vm->pgt_bits;
-
- mutex_lock(&vm->mm.mutex);
- nouveau_vm_unmap_pgt(vm, vma->node->type != vm->spg_shift, fpde, lpde);
- nouveau_mm_put(&vm->mm, vma->node);
- vma->node = NULL;
- mutex_unlock(&vm->mm.mutex);
-}
-
-int
-nouveau_vm_new(struct drm_device *dev, u64 offset, u64 length, u64 mm_offset,
- struct nouveau_vm **pvm)
-{
- struct drm_nouveau_private *dev_priv = dev->dev_private;
- struct nouveau_vm *vm;
- u64 mm_length = (offset + length) - mm_offset;
- u32 block, pgt_bits;
- int ret;
-
- vm = kzalloc(sizeof(*vm), GFP_KERNEL);
- if (!vm)
- return -ENOMEM;
-
- if (dev_priv->card_type == NV_50) {
- vm->map_pgt = nv50_vm_map_pgt;
- vm->map = nv50_vm_map;
- vm->map_sg = nv50_vm_map_sg;
- vm->unmap = nv50_vm_unmap;
- vm->flush = nv50_vm_flush;
- vm->spg_shift = 12;
- vm->lpg_shift = 16;
-
- pgt_bits = 29;
- block = (1 << pgt_bits);
- if (length < block)
- block = length;
-
- } else
- if (dev_priv->card_type >= NV_C0) {
- vm->map_pgt = nvc0_vm_map_pgt;
- vm->map = nvc0_vm_map;
- vm->map_sg = nvc0_vm_map_sg;
- vm->unmap = nvc0_vm_unmap;
- vm->flush = nvc0_vm_flush;
- vm->spg_shift = 12;
- vm->lpg_shift = 17;
- pgt_bits = 27;
- block = 4096;
- } else {
- kfree(vm);
- return -ENOSYS;
- }
-
- vm->fpde = offset >> pgt_bits;
- vm->lpde = (offset + length - 1) >> pgt_bits;
- vm->pgt = kcalloc(vm->lpde - vm->fpde + 1, sizeof(*vm->pgt), GFP_KERNEL);
- if (!vm->pgt) {
- kfree(vm);
- return -ENOMEM;
- }
-
- INIT_LIST_HEAD(&vm->pgd_list);
- vm->dev = dev;
- vm->refcount = 1;
- vm->pgt_bits = pgt_bits - 12;
-
- ret = nouveau_mm_init(&vm->mm, mm_offset >> 12, mm_length >> 12,
- block >> 12);
- if (ret) {
- kfree(vm);
- return ret;
- }
-
- *pvm = vm;
- return 0;
-}
-
-static int
-nouveau_vm_link(struct nouveau_vm *vm, struct nouveau_gpuobj *pgd)
-{
- struct nouveau_vm_pgd *vpgd;
- int i;
-
- if (!pgd)
- return 0;
-
- vpgd = kzalloc(sizeof(*vpgd), GFP_KERNEL);
- if (!vpgd)
- return -ENOMEM;
-
- nouveau_gpuobj_ref(pgd, &vpgd->obj);
-
- mutex_lock(&vm->mm.mutex);
- for (i = vm->fpde; i <= vm->lpde; i++)
- vm->map_pgt(pgd, i, vm->pgt[i - vm->fpde].obj);
- list_add(&vpgd->head, &vm->pgd_list);
- mutex_unlock(&vm->mm.mutex);
- return 0;
-}
-
-static void
-nouveau_vm_unlink(struct nouveau_vm *vm, struct nouveau_gpuobj *mpgd)
-{
- struct nouveau_vm_pgd *vpgd, *tmp;
- struct nouveau_gpuobj *pgd = NULL;
-
- if (!mpgd)
- return;
-
- mutex_lock(&vm->mm.mutex);
- list_for_each_entry_safe(vpgd, tmp, &vm->pgd_list, head) {
- if (vpgd->obj == mpgd) {
- pgd = vpgd->obj;
- list_del(&vpgd->head);
- kfree(vpgd);
- break;
- }
- }
- mutex_unlock(&vm->mm.mutex);
-
- nouveau_gpuobj_ref(NULL, &pgd);
-}
-
-static void
-nouveau_vm_del(struct nouveau_vm *vm)
-{
- struct nouveau_vm_pgd *vpgd, *tmp;
-
- list_for_each_entry_safe(vpgd, tmp, &vm->pgd_list, head) {
- nouveau_vm_unlink(vm, vpgd->obj);
- }
-
- nouveau_mm_fini(&vm->mm);
- kfree(vm->pgt);
- kfree(vm);
-}
-
-int
-nouveau_vm_ref(struct nouveau_vm *ref, struct nouveau_vm **ptr,
- struct nouveau_gpuobj *pgd)
-{
- struct nouveau_vm *vm;
- int ret;
-
- vm = ref;
- if (vm) {
- ret = nouveau_vm_link(vm, pgd);
- if (ret)
- return ret;
-
- vm->refcount++;
- }
-
- vm = *ptr;
- *ptr = ref;
-
- if (vm) {
- nouveau_vm_unlink(vm, pgd);
-
- if (--vm->refcount == 0)
- nouveau_vm_del(vm);
- }
-
- return 0;
-}
generated by cgit v1.2.3 (git 2.46.0) at 2025-08-14 14:08:15 +0000