diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/vm/base.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/vm/base.c | 483 |
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; -} |