diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv41.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv41.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv41.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv41.c new file mode 100644 index 000000000000..61ee3ab11660 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv41.c @@ -0,0 +1,157 @@ +/* + * Copyright 2012 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 "nv04.h" + +#include <core/device.h> +#include <core/gpuobj.h> +#include <core/option.h> +#include <subdev/timer.h> + +#define NV41_GART_SIZE (512 * 1024 * 1024) +#define NV41_GART_PAGE ( 4 * 1024) + +/******************************************************************************* + * VM map/unmap callbacks + ******************************************************************************/ + +static void +nv41_vm_map_sg(struct nvkm_vma *vma, struct nvkm_gpuobj *pgt, + struct nvkm_mem *mem, u32 pte, u32 cnt, dma_addr_t *list) +{ + pte = pte * 4; + while (cnt) { + u32 page = PAGE_SIZE / NV41_GART_PAGE; + u64 phys = (u64)*list++; + while (cnt && page--) { + nv_wo32(pgt, pte, (phys >> 7) | 1); + phys += NV41_GART_PAGE; + pte += 4; + cnt -= 1; + } + } +} + +static void +nv41_vm_unmap(struct nvkm_gpuobj *pgt, u32 pte, u32 cnt) +{ + pte = pte * 4; + while (cnt--) { + nv_wo32(pgt, pte, 0x00000000); + pte += 4; + } +} + +static void +nv41_vm_flush(struct nvkm_vm *vm) +{ + struct nv04_mmu_priv *priv = (void *)vm->mmu; + + mutex_lock(&nv_subdev(priv)->mutex); + nv_wr32(priv, 0x100810, 0x00000022); + if (!nv_wait(priv, 0x100810, 0x00000020, 0x00000020)) { + nv_warn(priv, "flush timeout, 0x%08x\n", + nv_rd32(priv, 0x100810)); + } + nv_wr32(priv, 0x100810, 0x00000000); + mutex_unlock(&nv_subdev(priv)->mutex); +} + +/******************************************************************************* + * MMU subdev + ******************************************************************************/ + +static int +nv41_mmu_ctor(struct nvkm_object *parent, struct nvkm_object *engine, + struct nvkm_oclass *oclass, void *data, u32 size, + struct nvkm_object **pobject) +{ + struct nvkm_device *device = nv_device(parent); + struct nv04_mmu_priv *priv; + int ret; + + if (pci_find_capability(device->pdev, PCI_CAP_ID_AGP) || + !nvkm_boolopt(device->cfgopt, "NvPCIE", true)) { + return nvkm_object_ctor(parent, engine, &nv04_mmu_oclass, + data, size, pobject); + } + + ret = nvkm_mmu_create(parent, engine, oclass, "PCIEGART", + "pciegart", &priv); + *pobject = nv_object(priv); + if (ret) + return ret; + + priv->base.create = nv04_vm_create; + priv->base.limit = NV41_GART_SIZE; + priv->base.dma_bits = 39; + priv->base.pgt_bits = 32 - 12; + priv->base.spg_shift = 12; + priv->base.lpg_shift = 12; + priv->base.map_sg = nv41_vm_map_sg; + priv->base.unmap = nv41_vm_unmap; + priv->base.flush = nv41_vm_flush; + + ret = nvkm_vm_create(&priv->base, 0, NV41_GART_SIZE, 0, 4096, + &priv->vm); + if (ret) + return ret; + + ret = nvkm_gpuobj_new(nv_object(priv), NULL, + (NV41_GART_SIZE / NV41_GART_PAGE) * 4, 16, + NVOBJ_FLAG_ZERO_ALLOC, + &priv->vm->pgt[0].obj[0]); + priv->vm->pgt[0].refcount[0] = 1; + if (ret) + return ret; + + return 0; +} + +static int +nv41_mmu_init(struct nvkm_object *object) +{ + struct nv04_mmu_priv *priv = (void *)object; + struct nvkm_gpuobj *dma = priv->vm->pgt[0].obj[0]; + int ret; + + ret = nvkm_mmu_init(&priv->base); + if (ret) + return ret; + + nv_wr32(priv, 0x100800, dma->addr | 0x00000002); + nv_mask(priv, 0x10008c, 0x00000100, 0x00000100); + nv_wr32(priv, 0x100820, 0x00000000); + return 0; +} + +struct nvkm_oclass +nv41_mmu_oclass = { + .handle = NV_SUBDEV(MMU, 0x41), + .ofuncs = &(struct nvkm_ofuncs) { + .ctor = nv41_mmu_ctor, + .dtor = nv04_mmu_dtor, + .init = nv41_mmu_init, + .fini = _nvkm_mmu_fini, + }, +}; |