drm/nouveau: modify vm to accomodate dual page tables for nvc0
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs
parent
147dc38e97
commit
3ee0128140
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@ -32,6 +32,7 @@ nouveau_vm_map_at(struct nouveau_vma *vma, u64 delta, struct nouveau_vram *vram)
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{
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struct nouveau_vm *vm = vma->vm;
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struct nouveau_mm_node *r;
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int big = vma->node->type != vm->spg_shift;
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u32 offset = vma->node->offset + (delta >> 12);
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u32 bits = vma->node->type - 12;
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u32 pde = (offset >> vm->pgt_bits) - vm->fpde;
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@ -44,7 +45,7 @@ nouveau_vm_map_at(struct nouveau_vma *vma, u64 delta, struct nouveau_vram *vram)
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u32 num = r->length >> bits;
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while (num) {
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struct nouveau_gpuobj *pgt = vm->pgt[pde].obj;
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struct nouveau_gpuobj *pgt = vm->pgt[pde].obj[big];
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end = (pte + num);
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if (unlikely(end >= max))
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@ -76,6 +77,7 @@ nouveau_vm_map_sg(struct nouveau_vma *vma, u64 delta, u64 length,
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dma_addr_t *list)
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{
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struct nouveau_vm *vm = vma->vm;
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int big = vma->node->type != vm->spg_shift;
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u32 offset = vma->node->offset + (delta >> 12);
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u32 bits = vma->node->type - 12;
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u32 num = length >> vma->node->type;
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@ -85,7 +87,7 @@ nouveau_vm_map_sg(struct nouveau_vma *vma, u64 delta, u64 length,
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u32 end, len;
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while (num) {
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struct nouveau_gpuobj *pgt = vm->pgt[pde].obj;
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struct nouveau_gpuobj *pgt = vm->pgt[pde].obj[big];
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end = (pte + num);
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if (unlikely(end >= max))
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@ -110,6 +112,7 @@ void
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nouveau_vm_unmap_at(struct nouveau_vma *vma, u64 delta, u64 length)
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{
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struct nouveau_vm *vm = vma->vm;
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int big = vma->node->type != vm->spg_shift;
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u32 offset = vma->node->offset + (delta >> 12);
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u32 bits = vma->node->type - 12;
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u32 num = length >> vma->node->type;
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@ -119,7 +122,7 @@ nouveau_vm_unmap_at(struct nouveau_vma *vma, u64 delta, u64 length)
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u32 end, len;
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while (num) {
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struct nouveau_gpuobj *pgt = vm->pgt[pde].obj;
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struct nouveau_gpuobj *pgt = vm->pgt[pde].obj[big];
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end = (pte + num);
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if (unlikely(end >= max))
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@ -146,7 +149,7 @@ nouveau_vm_unmap(struct nouveau_vma *vma)
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}
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static void
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nouveau_vm_unmap_pgt(struct nouveau_vm *vm, u32 fpde, u32 lpde)
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nouveau_vm_unmap_pgt(struct nouveau_vm *vm, int big, u32 fpde, u32 lpde)
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{
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struct nouveau_vm_pgd *vpgd;
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struct nouveau_vm_pgt *vpgt;
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@ -155,15 +158,15 @@ nouveau_vm_unmap_pgt(struct nouveau_vm *vm, u32 fpde, u32 lpde)
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for (pde = fpde; pde <= lpde; pde++) {
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vpgt = &vm->pgt[pde - vm->fpde];
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if (--vpgt->refcount)
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if (--vpgt->refcount[big])
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continue;
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list_for_each_entry(vpgd, &vm->pgd_list, head) {
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vm->unmap_pgt(vpgd->obj, pde);
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}
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pgt = vpgt->obj[big];
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vpgt->obj[big] = NULL;
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pgt = vpgt->obj;
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vpgt->obj = NULL;
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list_for_each_entry(vpgd, &vm->pgd_list, head) {
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vm->map_pgt(vpgd->obj, pde, vpgt->obj);
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}
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mutex_unlock(&vm->mm->mutex);
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nouveau_gpuobj_ref(NULL, &pgt);
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@ -177,6 +180,7 @@ nouveau_vm_map_pgt(struct nouveau_vm *vm, u32 pde, u32 type)
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struct nouveau_vm_pgt *vpgt = &vm->pgt[pde - vm->fpde];
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struct nouveau_vm_pgd *vpgd;
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struct nouveau_gpuobj *pgt;
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int big = (type != vm->spg_shift);
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u32 pgt_size;
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int ret;
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@ -191,19 +195,18 @@ nouveau_vm_map_pgt(struct nouveau_vm *vm, u32 pde, u32 type)
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return ret;
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/* someone beat us to filling the PDE while we didn't have the lock */
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if (unlikely(vpgt->refcount++)) {
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if (unlikely(vpgt->refcount[big]++)) {
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mutex_unlock(&vm->mm->mutex);
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nouveau_gpuobj_ref(NULL, &pgt);
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mutex_lock(&vm->mm->mutex);
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return 0;
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}
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vpgt->obj[big] = pgt;
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list_for_each_entry(vpgd, &vm->pgd_list, head) {
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vm->map_pgt(vpgd->obj, type, pde, pgt);
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vm->map_pgt(vpgd->obj, pde, vpgt->obj);
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}
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vpgt->page_shift = type;
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vpgt->obj = pgt;
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return 0;
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}
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@ -227,16 +230,17 @@ nouveau_vm_get(struct nouveau_vm *vm, u64 size, u32 page_shift,
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lpde = (vma->node->offset + vma->node->length - 1) >> vm->pgt_bits;
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for (pde = fpde; pde <= lpde; pde++) {
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struct nouveau_vm_pgt *vpgt = &vm->pgt[pde - vm->fpde];
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int big = (vma->node->type != vm->spg_shift);
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if (likely(vpgt->refcount)) {
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vpgt->refcount++;
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if (likely(vpgt->refcount[big])) {
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vpgt->refcount[big]++;
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continue;
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}
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ret = nouveau_vm_map_pgt(vm, pde, vma->node->type);
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if (ret) {
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if (pde != fpde)
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nouveau_vm_unmap_pgt(vm, fpde, pde - 1);
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nouveau_vm_unmap_pgt(vm, big, fpde, pde - 1);
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nouveau_mm_put(vm->mm, vma->node);
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mutex_unlock(&vm->mm->mutex);
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vma->node = NULL;
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@ -263,21 +267,20 @@ nouveau_vm_put(struct nouveau_vma *vma)
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lpde = (vma->node->offset + vma->node->length - 1) >> vm->pgt_bits;
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mutex_lock(&vm->mm->mutex);
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nouveau_vm_unmap_pgt(vm, vma->node->type != vm->spg_shift, fpde, lpde);
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nouveau_mm_put(vm->mm, vma->node);
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vma->node = NULL;
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nouveau_vm_unmap_pgt(vm, fpde, lpde);
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mutex_unlock(&vm->mm->mutex);
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}
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int
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nouveau_vm_new(struct drm_device *dev, u64 offset, u64 length, u64 mm_offset,
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u8 pgt_bits, u8 spg_shift, u8 lpg_shift,
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struct nouveau_vm **pvm)
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{
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_vm *vm;
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u64 mm_length = (offset + length) - mm_offset;
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u32 block;
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u32 block, pgt_bits;
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int ret;
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vm = kzalloc(sizeof(*vm), GFP_KERNEL);
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@ -286,11 +289,13 @@ nouveau_vm_new(struct drm_device *dev, u64 offset, u64 length, u64 mm_offset,
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if (dev_priv->card_type == NV_50) {
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vm->map_pgt = nv50_vm_map_pgt;
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vm->unmap_pgt = nv50_vm_unmap_pgt;
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vm->map = nv50_vm_map;
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vm->map_sg = nv50_vm_map_sg;
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vm->unmap = nv50_vm_unmap;
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vm->flush = nv50_vm_flush;
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vm->spg_shift = 12;
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vm->lpg_shift = 16;
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pgt_bits = 29;
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} else {
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kfree(vm);
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return -ENOSYS;
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@ -308,8 +313,6 @@ nouveau_vm_new(struct drm_device *dev, u64 offset, u64 length, u64 mm_offset,
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vm->dev = dev;
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vm->refcount = 1;
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vm->pgt_bits = pgt_bits - 12;
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vm->spg_shift = spg_shift;
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vm->lpg_shift = lpg_shift;
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block = (1 << pgt_bits);
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if (length < block)
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@ -342,16 +345,8 @@ nouveau_vm_link(struct nouveau_vm *vm, struct nouveau_gpuobj *pgd)
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nouveau_gpuobj_ref(pgd, &vpgd->obj);
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mutex_lock(&vm->mm->mutex);
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for (i = vm->fpde; i <= vm->lpde; i++) {
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struct nouveau_vm_pgt *vpgt = &vm->pgt[i - vm->fpde];
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if (!vpgt->obj) {
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vm->unmap_pgt(pgd, i);
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continue;
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}
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vm->map_pgt(pgd, vpgt->page_shift, i, vpgt->obj);
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}
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for (i = vm->fpde; i <= vm->lpde; i++)
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vm->map_pgt(pgd, i, vm->pgt[i - vm->fpde].obj);
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list_add(&vpgd->head, &vm->pgd_list);
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mutex_unlock(&vm->mm->mutex);
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return 0;
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@ -31,9 +31,8 @@
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#include "nouveau_mm.h"
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struct nouveau_vm_pgt {
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struct nouveau_gpuobj *obj;
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u32 page_shift;
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u32 refcount;
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struct nouveau_gpuobj *obj[2];
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u32 refcount[2];
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};
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struct nouveau_vm_pgd {
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@ -65,9 +64,8 @@ struct nouveau_vm {
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u8 spg_shift;
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u8 lpg_shift;
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void (*map_pgt)(struct nouveau_gpuobj *pgd, u32 type, u32 pde,
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struct nouveau_gpuobj *pgt);
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void (*unmap_pgt)(struct nouveau_gpuobj *pgd, u32 pde);
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void (*map_pgt)(struct nouveau_gpuobj *pgd, u32 pde,
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struct nouveau_gpuobj *pgt[2]);
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void (*map)(struct nouveau_vma *, struct nouveau_gpuobj *,
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struct nouveau_vram *, u32 pte, u32 cnt, u64 phys);
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void (*map_sg)(struct nouveau_vma *, struct nouveau_gpuobj *,
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@ -78,7 +76,6 @@ struct nouveau_vm {
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/* nouveau_vm.c */
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int nouveau_vm_new(struct drm_device *, u64 offset, u64 length, u64 mm_offset,
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u8 pgt_bits, u8 spg_shift, u8 lpg_shift,
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struct nouveau_vm **);
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int nouveau_vm_ref(struct nouveau_vm *, struct nouveau_vm **,
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struct nouveau_gpuobj *pgd);
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@ -93,9 +90,8 @@ void nouveau_vm_map_sg(struct nouveau_vma *, u64 offset, u64 length,
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dma_addr_t *);
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/* nv50_vm.c */
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void nv50_vm_map_pgt(struct nouveau_gpuobj *pgd, u32 type, u32 pde,
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struct nouveau_gpuobj *pgt);
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void nv50_vm_unmap_pgt(struct nouveau_gpuobj *pgd, u32 pde);
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void nv50_vm_map_pgt(struct nouveau_gpuobj *pgd, u32 pde,
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struct nouveau_gpuobj *pgt[2]);
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void nv50_vm_map(struct nouveau_vma *, struct nouveau_gpuobj *,
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struct nouveau_vram *, u32 pte, u32 cnt, u64 phys);
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void nv50_vm_map_sg(struct nouveau_vma *, struct nouveau_gpuobj *,
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@ -151,20 +151,19 @@ nv50_instmem_init(struct drm_device *dev)
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/* BAR3 */
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ret = nouveau_vm_new(dev, BAR3_VM_BASE, BAR3_VM_SIZE, BAR3_VM_BASE,
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29, 12, 16, &dev_priv->bar3_vm);
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&dev_priv->bar3_vm);
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if (ret)
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goto error;
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ret = nouveau_gpuobj_new(dev, NULL, (BAR3_VM_SIZE >> 12) * 8,
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0x1000, NVOBJ_FLAG_DONT_MAP |
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NVOBJ_FLAG_ZERO_ALLOC,
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&dev_priv->bar3_vm->pgt[0].obj);
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&dev_priv->bar3_vm->pgt[0].obj[0]);
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if (ret)
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goto error;
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dev_priv->bar3_vm->pgt[0].page_shift = 12;
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dev_priv->bar3_vm->pgt[0].refcount = 1;
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dev_priv->bar3_vm->pgt[0].refcount[0] = 1;
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nv50_instmem_map(dev_priv->bar3_vm->pgt[0].obj);
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nv50_instmem_map(dev_priv->bar3_vm->pgt[0].obj[0]);
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ret = nv50_channel_new(dev, 128 * 1024, dev_priv->bar3_vm, &chan);
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if (ret)
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@ -195,8 +194,7 @@ nv50_instmem_init(struct drm_device *dev)
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nv_wo32(chan->ramin, 0, tmp);
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/* BAR1 */
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ret = nouveau_vm_new(dev, BAR1_VM_BASE, BAR1_VM_SIZE, BAR1_VM_BASE,
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29, 12, 16, &vm);
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ret = nouveau_vm_new(dev, BAR1_VM_BASE, BAR1_VM_SIZE, BAR1_VM_BASE, &vm);
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if (ret)
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goto error;
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@ -220,7 +218,7 @@ nv50_instmem_init(struct drm_device *dev)
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* to catch "NULL pointer" references
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*/
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ret = nouveau_vm_new(dev, 0, (1ULL << 40), 0x0020000000ULL,
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29, 12, 16, &dev_priv->chan_vm);
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&dev_priv->chan_vm);
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if (ret)
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return ret;
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@ -258,7 +256,7 @@ nv50_instmem_takedown(struct drm_device *dev)
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dev_priv->channels.ptr[127] = 0;
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nv50_channel_del(&dev_priv->channels.ptr[0]);
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nouveau_gpuobj_ref(NULL, &dev_priv->bar3_vm->pgt[0].obj);
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nouveau_gpuobj_ref(NULL, &dev_priv->bar3_vm->pgt[0].obj[0]);
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nouveau_vm_ref(NULL, &dev_priv->bar3_vm, NULL);
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if (dev_priv->ramin_heap.free_stack.next)
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@ -28,39 +28,40 @@
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#include "nouveau_vm.h"
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void
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nv50_vm_map_pgt(struct nouveau_gpuobj *pgd, u32 type, u32 pde,
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struct nouveau_gpuobj *pgt)
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nv50_vm_map_pgt(struct nouveau_gpuobj *pgd, u32 pde,
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struct nouveau_gpuobj *pgt[2])
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{
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struct drm_nouveau_private *dev_priv = pgd->dev->dev_private;
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u32 coverage = (pgt->size >> 3) << type;
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u64 phys;
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u64 phys = 0xdeadcafe00000000ULL;
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u32 coverage = 0;
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phys = pgt->vinst;
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phys |= 0x01; /* present */
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phys |= (type == 12) ? 0x02 : 0x00; /* 4KiB pages */
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if (dev_priv->vram_sys_base) {
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phys += dev_priv->vram_sys_base;
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phys |= 0x30;
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if (pgt[0]) {
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phys = 0x00000003 | pgt[0]->vinst; /* present, 4KiB pages */
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coverage = (pgt[0]->size >> 3) << 12;
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} else
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if (pgt[1]) {
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phys = 0x00000001 | pgt[1]->vinst; /* present */
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coverage = (pgt[1]->size >> 3) << 16;
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}
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if (coverage <= 32 * 1024 * 1024)
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phys |= 0x60;
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else if (coverage <= 64 * 1024 * 1024)
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phys |= 0x40;
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else if (coverage < 128 * 1024 * 1024)
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phys |= 0x20;
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if (phys & 1) {
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if (dev_priv->vram_sys_base) {
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phys += dev_priv->vram_sys_base;
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phys |= 0x30;
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}
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if (coverage <= 32 * 1024 * 1024)
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phys |= 0x60;
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else if (coverage <= 64 * 1024 * 1024)
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phys |= 0x40;
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else if (coverage < 128 * 1024 * 1024)
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phys |= 0x20;
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}
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nv_wo32(pgd, (pde * 8) + 0, lower_32_bits(phys));
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nv_wo32(pgd, (pde * 8) + 4, upper_32_bits(phys));
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}
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void
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nv50_vm_unmap_pgt(struct nouveau_gpuobj *pgd, u32 pde)
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{
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nv_wo32(pgd, (pde * 8) + 0, 0x00000000);
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nv_wo32(pgd, (pde * 8) + 4, 0xdeadcafe);
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}
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static inline u64
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nv50_vm_addr(struct nouveau_vma *vma, struct nouveau_gpuobj *pgt,
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u64 phys, u32 memtype, u32 target)
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