drm/nouveau: remove symlinks, move core/ to nvkm/ (no code changes)

The symlinks were annoying some people, and they're not used anywhere
else in the kernel tree.  The include directory structure has been
changed so that symlinks aren't needed anymore.

NVKM has been moved from core/ to nvkm/ to make it more obvious as to
what the directory is for, and as some minor prep for when NVKM gets
split out into its own module (virt) at a later date.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 0 insertions, 483 deletions

diff --git a/drivers/gpu/drm/nouveau/core/subdev/vm/base.c b/drivers/gpu/drm/nouveau/core/subdev/vm/base.c
deleted file mode 100644
index f75a683bd47a..000000000000
--- a/drivers/gpu/drm/nouveau/core/subdev/vm/base.c
+++ /dev/null
@@ -1,483 +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 <core/gpuobj.h>
-#include <core/mm.h>
-
-#include <subdev/fb.h>
-#include <subdev/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_vmmgr *vmm = vm->vmm;
-	struct nouveau_mm_node *r;
-	int big = vma->node->type != vmm->spg_shift;
-	u32 offset = vma->node->offset + (delta >> 12);
-	u32 bits = vma->node->type - 12;
-	u32 pde  = (offset >> vmm->pgt_bits) - vm->fpde;
-	u32 pte  = (offset & ((1 << vmm->pgt_bits) - 1)) >> bits;
-	u32 max  = 1 << (vmm->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;
-
-			vmm->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;
-		}
-	}
-
-	vmm->flush(vm);
-}
-
-static void
-nouveau_vm_map_sg_table(struct nouveau_vma *vma, u64 delta, u64 length,
-			struct nouveau_mem *mem)
-{
-	struct nouveau_vm *vm = vma->vm;
-	struct nouveau_vmmgr *vmm = vm->vmm;
-	int big = vma->node->type != vmm->spg_shift;
-	u32 offset = vma->node->offset + (delta >> 12);
-	u32 bits = vma->node->type - 12;
-	u32 num  = length >> vma->node->type;
-	u32 pde  = (offset >> vmm->pgt_bits) - vm->fpde;
-	u32 pte  = (offset & ((1 << vmm->pgt_bits) - 1)) >> bits;
-	u32 max  = 1 << (vmm->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);
-
-			vmm->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);
-
-				vmm->map_sg(vma, pgt, mem, pte, 1, &addr);
-				num--;
-				pte++;
-				if (num == 0)
-					goto finish;
-			}
-		}
-
-	}
-finish:
-	vmm->flush(vm);
-}
-
-static void
-nouveau_vm_map_sg(struct nouveau_vma *vma, u64 delta, u64 length,
-		  struct nouveau_mem *mem)
-{
-	struct nouveau_vm *vm = vma->vm;
-	struct nouveau_vmmgr *vmm = vm->vmm;
-	dma_addr_t *list = mem->pages;
-	int big = vma->node->type != vmm->spg_shift;
-	u32 offset = vma->node->offset + (delta >> 12);
-	u32 bits = vma->node->type - 12;
-	u32 num  = length >> vma->node->type;
-	u32 pde  = (offset >> vmm->pgt_bits) - vm->fpde;
-	u32 pte  = (offset & ((1 << vmm->pgt_bits) - 1)) >> bits;
-	u32 max  = 1 << (vmm->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;
-
-		vmm->map_sg(vma, pgt, mem, pte, len, list);
-
-		num  -= len;
-		pte  += len;
-		list += len;
-		if (unlikely(end >= max)) {
-			pde++;
-			pte = 0;
-		}
-	}
-
-	vmm->flush(vm);
-}
-
-void
-nouveau_vm_map(struct nouveau_vma *vma, struct nouveau_mem *node)
-{
-	if (node->sg)
-		nouveau_vm_map_sg_table(vma, 0, node->size << 12, node);
-	else
-	if (node->pages)
-		nouveau_vm_map_sg(vma, 0, node->size << 12, node);
-	else
-		nouveau_vm_map_at(vma, 0, node);
-}
-
-void
-nouveau_vm_unmap_at(struct nouveau_vma *vma, u64 delta, u64 length)
-{
-	struct nouveau_vm *vm = vma->vm;
-	struct nouveau_vmmgr *vmm = vm->vmm;
-	int big = vma->node->type != vmm->spg_shift;
-	u32 offset = vma->node->offset + (delta >> 12);
-	u32 bits = vma->node->type - 12;
-	u32 num  = length >> vma->node->type;
-	u32 pde  = (offset >> vmm->pgt_bits) - vm->fpde;
-	u32 pte  = (offset & ((1 << vmm->pgt_bits) - 1)) >> bits;
-	u32 max  = 1 << (vmm->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;
-
-		vmm->unmap(pgt, pte, len);
-
-		num -= len;
-		pte += len;
-		if (unlikely(end >= max)) {
-			pde++;
-			pte = 0;
-		}
-	}
-
-	vmm->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_vmmgr *vmm = vm->vmm;
-	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) {
-			vmm->map_pgt(vpgd->obj, pde, vpgt->obj);
-		}
-
-		mutex_unlock(&nv_subdev(vmm)->mutex);
-		nouveau_gpuobj_ref(NULL, &pgt);
-		mutex_lock(&nv_subdev(vmm)->mutex);
-	}
-}
-
-static int
-nouveau_vm_map_pgt(struct nouveau_vm *vm, u32 pde, u32 type)
-{
-	struct nouveau_vmmgr *vmm = vm->vmm;
-	struct nouveau_vm_pgt *vpgt = &vm->pgt[pde - vm->fpde];
-	struct nouveau_vm_pgd *vpgd;
-	struct nouveau_gpuobj *pgt;
-	int big = (type != vmm->spg_shift);
-	u32 pgt_size;
-	int ret;
-
-	pgt_size  = (1 << (vmm->pgt_bits + 12)) >> type;
-	pgt_size *= 8;
-
-	mutex_unlock(&nv_subdev(vmm)->mutex);
-	ret = nouveau_gpuobj_new(nv_object(vm->vmm), NULL, pgt_size, 0x1000,
-				 NVOBJ_FLAG_ZERO_ALLOC, &pgt);
-	mutex_lock(&nv_subdev(vmm)->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(&nv_subdev(vmm)->mutex);
-		nouveau_gpuobj_ref(NULL, &pgt);
-		mutex_lock(&nv_subdev(vmm)->mutex);
-		return 0;
-	}
-
-	vpgt->obj[big] = pgt;
-	list_for_each_entry(vpgd, &vm->pgd_list, head) {
-		vmm->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)
-{
-	struct nouveau_vmmgr *vmm = vm->vmm;
-	u32 align = (1 << page_shift) >> 12;
-	u32 msize = size >> 12;
-	u32 fpde, lpde, pde;
-	int ret;
-
-	mutex_lock(&nv_subdev(vmm)->mutex);
-	ret = nouveau_mm_head(&vm->mm, 0, page_shift, msize, msize, align,
-			     &vma->node);
-	if (unlikely(ret != 0)) {
-		mutex_unlock(&nv_subdev(vmm)->mutex);
-		return ret;
-	}
-
-	fpde = (vma->node->offset >> vmm->pgt_bits);
-	lpde = (vma->node->offset + vma->node->length - 1) >> vmm->pgt_bits;
-
-	for (pde = fpde; pde <= lpde; pde++) {
-		struct nouveau_vm_pgt *vpgt = &vm->pgt[pde - vm->fpde];
-		int big = (vma->node->type != vmm->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_free(&vm->mm, &vma->node);
-			mutex_unlock(&nv_subdev(vmm)->mutex);
-			return ret;
-		}
-	}
-	mutex_unlock(&nv_subdev(vmm)->mutex);
-
-	vma->vm = NULL;
-	nouveau_vm_ref(vm, &vma->vm, NULL);
-	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;
-	struct nouveau_vmmgr *vmm = vm->vmm;
-	u32 fpde, lpde;
-
-	if (unlikely(vma->node == NULL))
-		return;
-	fpde = (vma->node->offset >> vmm->pgt_bits);
-	lpde = (vma->node->offset + vma->node->length - 1) >> vmm->pgt_bits;
-
-	mutex_lock(&nv_subdev(vmm)->mutex);
-	nouveau_vm_unmap_pgt(vm, vma->node->type != vmm->spg_shift, fpde, lpde);
-	nouveau_mm_free(&vm->mm, &vma->node);
-	mutex_unlock(&nv_subdev(vmm)->mutex);
-
-	nouveau_vm_ref(NULL, &vma->vm, NULL);
-}
-
-int
-nouveau_vm_create(struct nouveau_vmmgr *vmm, u64 offset, u64 length,
-		  u64 mm_offset, u32 block, struct nouveau_vm **pvm)
-{
-	struct nouveau_vm *vm;
-	u64 mm_length = (offset + length) - mm_offset;
-	int ret;
-
-	vm = kzalloc(sizeof(*vm), GFP_KERNEL);
-	if (!vm)
-		return -ENOMEM;
-
-	INIT_LIST_HEAD(&vm->pgd_list);
-	vm->vmm = vmm;
-	kref_init(&vm->refcount);
-	vm->fpde = offset >> (vmm->pgt_bits + 12);
-	vm->lpde = (offset + length - 1) >> (vmm->pgt_bits + 12);
-
-	vm->pgt  = vzalloc((vm->lpde - vm->fpde + 1) * sizeof(*vm->pgt));
-	if (!vm->pgt) {
-		kfree(vm);
-		return -ENOMEM;
-	}
-
-	ret = nouveau_mm_init(&vm->mm, mm_offset >> 12, mm_length >> 12,
-			      block >> 12);
-	if (ret) {
-		vfree(vm->pgt);
-		kfree(vm);
-		return ret;
-	}
-
-	*pvm = vm;
-
-	return 0;
-}
-
-int
-nouveau_vm_new(struct nouveau_device *device, u64 offset, u64 length,
-	       u64 mm_offset, struct nouveau_vm **pvm)
-{
-	struct nouveau_vmmgr *vmm = nouveau_vmmgr(device);
-	return vmm->create(vmm, offset, length, mm_offset, pvm);
-}
-
-static int
-nouveau_vm_link(struct nouveau_vm *vm, struct nouveau_gpuobj *pgd)
-{
-	struct nouveau_vmmgr *vmm = vm->vmm;
-	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(&nv_subdev(vmm)->mutex);
-	for (i = vm->fpde; i <= vm->lpde; i++)
-		vmm->map_pgt(pgd, i, vm->pgt[i - vm->fpde].obj);
-	list_add(&vpgd->head, &vm->pgd_list);
-	mutex_unlock(&nv_subdev(vmm)->mutex);
-	return 0;
-}
-
-static void
-nouveau_vm_unlink(struct nouveau_vm *vm, struct nouveau_gpuobj *mpgd)
-{
-	struct nouveau_vmmgr *vmm = vm->vmm;
-	struct nouveau_vm_pgd *vpgd, *tmp;
-	struct nouveau_gpuobj *pgd = NULL;
-
-	if (!mpgd)
-		return;
-
-	mutex_lock(&nv_subdev(vmm)->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(&nv_subdev(vmm)->mutex);
-
-	nouveau_gpuobj_ref(NULL, &pgd);
-}
-
-static void
-nouveau_vm_del(struct kref *kref)
-{
-	struct nouveau_vm *vm = container_of(kref, typeof(*vm), refcount);
-	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);
-	vfree(vm->pgt);
-	kfree(vm);
-}
-
-int
-nouveau_vm_ref(struct nouveau_vm *ref, struct nouveau_vm **ptr,
-	       struct nouveau_gpuobj *pgd)
-{
-	if (ref) {
-		int ret = nouveau_vm_link(ref, pgd);
-		if (ret)
-			return ret;
-
-		kref_get(&ref->refcount);
-	}
-
-	if (*ptr) {
-		nouveau_vm_unlink(*ptr, pgd);
-		kref_put(&(*ptr)->refcount, nouveau_vm_del);
-	}
-
-	*ptr = ref;
-	return 0;
-}