diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv44.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv44.c | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv44.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv44.c new file mode 100644 index 000000000000..b90ded1887aa --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv44.c @@ -0,0 +1,247 @@ +/* + * 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 NV44_GART_SIZE (512 * 1024 * 1024) +#define NV44_GART_PAGE ( 4 * 1024) + +/******************************************************************************* + * VM map/unmap callbacks + ******************************************************************************/ + +static void +nv44_vm_fill(struct nvkm_gpuobj *pgt, dma_addr_t null, + dma_addr_t *list, u32 pte, u32 cnt) +{ + u32 base = (pte << 2) & ~0x0000000f; + u32 tmp[4]; + + tmp[0] = nv_ro32(pgt, base + 0x0); + tmp[1] = nv_ro32(pgt, base + 0x4); + tmp[2] = nv_ro32(pgt, base + 0x8); + tmp[3] = nv_ro32(pgt, base + 0xc); + + while (cnt--) { + u32 addr = list ? (*list++ >> 12) : (null >> 12); + switch (pte++ & 0x3) { + case 0: + tmp[0] &= ~0x07ffffff; + tmp[0] |= addr; + break; + case 1: + tmp[0] &= ~0xf8000000; + tmp[0] |= addr << 27; + tmp[1] &= ~0x003fffff; + tmp[1] |= addr >> 5; + break; + case 2: + tmp[1] &= ~0xffc00000; + tmp[1] |= addr << 22; + tmp[2] &= ~0x0001ffff; + tmp[2] |= addr >> 10; + break; + case 3: + tmp[2] &= ~0xfffe0000; + tmp[2] |= addr << 17; + tmp[3] &= ~0x00000fff; + tmp[3] |= addr >> 15; + break; + } + } + + nv_wo32(pgt, base + 0x0, tmp[0]); + nv_wo32(pgt, base + 0x4, tmp[1]); + nv_wo32(pgt, base + 0x8, tmp[2]); + nv_wo32(pgt, base + 0xc, tmp[3] | 0x40000000); +} + +static void +nv44_vm_map_sg(struct nvkm_vma *vma, struct nvkm_gpuobj *pgt, + struct nvkm_mem *mem, u32 pte, u32 cnt, dma_addr_t *list) +{ + struct nv04_mmu_priv *priv = (void *)vma->vm->mmu; + u32 tmp[4]; + int i; + + if (pte & 3) { + u32 max = 4 - (pte & 3); + u32 part = (cnt > max) ? max : cnt; + nv44_vm_fill(pgt, priv->null, list, pte, part); + pte += part; + list += part; + cnt -= part; + } + + while (cnt >= 4) { + for (i = 0; i < 4; i++) + tmp[i] = *list++ >> 12; + nv_wo32(pgt, pte++ * 4, tmp[0] >> 0 | tmp[1] << 27); + nv_wo32(pgt, pte++ * 4, tmp[1] >> 5 | tmp[2] << 22); + nv_wo32(pgt, pte++ * 4, tmp[2] >> 10 | tmp[3] << 17); + nv_wo32(pgt, pte++ * 4, tmp[3] >> 15 | 0x40000000); + cnt -= 4; + } + + if (cnt) + nv44_vm_fill(pgt, priv->null, list, pte, cnt); +} + +static void +nv44_vm_unmap(struct nvkm_gpuobj *pgt, u32 pte, u32 cnt) +{ + struct nv04_mmu_priv *priv = (void *)nvkm_mmu(pgt); + + if (pte & 3) { + u32 max = 4 - (pte & 3); + u32 part = (cnt > max) ? max : cnt; + nv44_vm_fill(pgt, priv->null, NULL, pte, part); + pte += part; + cnt -= part; + } + + while (cnt >= 4) { + nv_wo32(pgt, pte++ * 4, 0x00000000); + nv_wo32(pgt, pte++ * 4, 0x00000000); + nv_wo32(pgt, pte++ * 4, 0x00000000); + nv_wo32(pgt, pte++ * 4, 0x00000000); + cnt -= 4; + } + + if (cnt) + nv44_vm_fill(pgt, priv->null, NULL, pte, cnt); +} + +static void +nv44_vm_flush(struct nvkm_vm *vm) +{ + struct nv04_mmu_priv *priv = (void *)vm->mmu; + nv_wr32(priv, 0x100814, priv->base.limit - NV44_GART_PAGE); + nv_wr32(priv, 0x100808, 0x00000020); + if (!nv_wait(priv, 0x100808, 0x00000001, 0x00000001)) + nv_error(priv, "timeout: 0x%08x\n", nv_rd32(priv, 0x100808)); + nv_wr32(priv, 0x100808, 0x00000000); +} + +/******************************************************************************* + * MMU subdev + ******************************************************************************/ + +static int +nv44_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 = NV44_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 = nv44_vm_map_sg; + priv->base.unmap = nv44_vm_unmap; + priv->base.flush = nv44_vm_flush; + + priv->nullp = pci_alloc_consistent(device->pdev, 16 * 1024, &priv->null); + if (!priv->nullp) { + nv_error(priv, "unable to allocate dummy pages\n"); + return -ENOMEM; + } + + ret = nvkm_vm_create(&priv->base, 0, NV44_GART_SIZE, 0, 4096, + &priv->vm); + if (ret) + return ret; + + ret = nvkm_gpuobj_new(nv_object(priv), NULL, + (NV44_GART_SIZE / NV44_GART_PAGE) * 4, + 512 * 1024, 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 +nv44_mmu_init(struct nvkm_object *object) +{ + struct nv04_mmu_priv *priv = (void *)object; + struct nvkm_gpuobj *gart = priv->vm->pgt[0].obj[0]; + u32 addr; + int ret; + + ret = nvkm_mmu_init(&priv->base); + if (ret) + return ret; + + /* calculate vram address of this PRAMIN block, object must be + * allocated on 512KiB alignment, and not exceed a total size + * of 512KiB for this to work correctly + */ + addr = nv_rd32(priv, 0x10020c); + addr -= ((gart->addr >> 19) + 1) << 19; + + nv_wr32(priv, 0x100850, 0x80000000); + nv_wr32(priv, 0x100818, priv->null); + nv_wr32(priv, 0x100804, NV44_GART_SIZE); + nv_wr32(priv, 0x100850, 0x00008000); + nv_mask(priv, 0x10008c, 0x00000200, 0x00000200); + nv_wr32(priv, 0x100820, 0x00000000); + nv_wr32(priv, 0x10082c, 0x00000001); + nv_wr32(priv, 0x100800, addr | 0x00000010); + return 0; +} + +struct nvkm_oclass +nv44_mmu_oclass = { + .handle = NV_SUBDEV(MMU, 0x44), + .ofuncs = &(struct nvkm_ofuncs) { + .ctor = nv44_mmu_ctor, + .dtor = nv04_mmu_dtor, + .init = nv44_mmu_init, + .fini = _nvkm_mmu_fini, + }, +}; |