diff options
Diffstat (limited to 'drm/nouveau/nvkm/subdev/vm/nv04.c')
| -rw-r--r-- | drm/nouveau/nvkm/subdev/vm/nv04.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/drm/nouveau/nvkm/subdev/vm/nv04.c b/drm/nouveau/nvkm/subdev/vm/nv04.c new file mode 100644 index 000000000..ed4543716 --- /dev/null +++ b/drm/nouveau/nvkm/subdev/vm/nv04.c @@ -0,0 +1,151 @@ +/* + * 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 <core/gpuobj.h> + +#include "nv04.h" + +#define NV04_PDMA_SIZE (128 * 1024 * 1024) +#define NV04_PDMA_PAGE ( 4 * 1024) + +/******************************************************************************* + * VM map/unmap callbacks + ******************************************************************************/ + +static void +nv04_vm_map_sg(struct nouveau_vma *vma, struct nouveau_gpuobj *pgt, + struct nouveau_mem *mem, u32 pte, u32 cnt, dma_addr_t *list) +{ + pte = 0x00008 + (pte * 4); + while (cnt) { + u32 page = PAGE_SIZE / NV04_PDMA_PAGE; + u32 phys = (u32)*list++; + while (cnt && page--) { + nv_wo32(pgt, pte, phys | 3); + phys += NV04_PDMA_PAGE; + pte += 4; + cnt -= 1; + } + } +} + +static void +nv04_vm_unmap(struct nouveau_gpuobj *pgt, u32 pte, u32 cnt) +{ + pte = 0x00008 + (pte * 4); + while (cnt--) { + nv_wo32(pgt, pte, 0x00000000); + pte += 4; + } +} + +static void +nv04_vm_flush(struct nouveau_vm *vm) +{ +} + +/******************************************************************************* + * VM object + ******************************************************************************/ + +int +nv04_vm_create(struct nouveau_vmmgr *vmm, u64 offset, u64 length, u64 mmstart, + struct nouveau_vm **pvm) +{ + return -EINVAL; +} + +/******************************************************************************* + * VMMGR subdev + ******************************************************************************/ + +static int +nv04_vmmgr_ctor(struct nouveau_object *parent, struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 size, + struct nouveau_object **pobject) +{ + struct nv04_vmmgr_priv *priv; + struct nouveau_gpuobj *dma; + int ret; + + ret = nouveau_vmmgr_create(parent, engine, oclass, "PCIGART", + "pcigart", &priv); + *pobject = nv_object(priv); + if (ret) + return ret; + + priv->base.create = nv04_vm_create; + priv->base.limit = NV04_PDMA_SIZE; + priv->base.dma_bits = 32; + priv->base.pgt_bits = 32 - 12; + priv->base.spg_shift = 12; + priv->base.lpg_shift = 12; + priv->base.map_sg = nv04_vm_map_sg; + priv->base.unmap = nv04_vm_unmap; + priv->base.flush = nv04_vm_flush; + + ret = nouveau_vm_create(&priv->base, 0, NV04_PDMA_SIZE, 0, 4096, + &priv->vm); + if (ret) + return ret; + + ret = nouveau_gpuobj_new(nv_object(priv), NULL, + (NV04_PDMA_SIZE / NV04_PDMA_PAGE) * 4 + + 8, 16, NVOBJ_FLAG_ZERO_ALLOC, + &priv->vm->pgt[0].obj[0]); + dma = priv->vm->pgt[0].obj[0]; + priv->vm->pgt[0].refcount[0] = 1; + if (ret) + return ret; + + nv_wo32(dma, 0x00000, 0x0002103d); /* PCI, RW, PT, !LN */ + nv_wo32(dma, 0x00004, NV04_PDMA_SIZE - 1); + return 0; +} + +void +nv04_vmmgr_dtor(struct nouveau_object *object) +{ + struct nv04_vmmgr_priv *priv = (void *)object; + if (priv->vm) { + nouveau_gpuobj_ref(NULL, &priv->vm->pgt[0].obj[0]); + nouveau_vm_ref(NULL, &priv->vm, NULL); + } + if (priv->nullp) { + pci_free_consistent(nv_device(priv)->pdev, 16 * 1024, + priv->nullp, priv->null); + } + nouveau_vmmgr_destroy(&priv->base); +} + +struct nouveau_oclass +nv04_vmmgr_oclass = { + .handle = NV_SUBDEV(VM, 0x04), + .ofuncs = &(struct nouveau_ofuncs) { + .ctor = nv04_vmmgr_ctor, + .dtor = nv04_vmmgr_dtor, + .init = _nouveau_vmmgr_init, + .fini = _nouveau_vmmgr_fini, + }, +}; |