diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/dma/usernv04.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/dma/usernv04.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/dma/usernv04.c b/drivers/gpu/drm/nouveau/nvkm/engine/dma/usernv04.c new file mode 100644 index 000000000..5159d5df2 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/engine/dma/usernv04.c @@ -0,0 +1,134 @@ +/* + * 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 + */ +#define nv04_dmaobj(p) container_of((p), struct nv04_dmaobj, base) +#include "user.h" + +#include <core/gpuobj.h> +#include <subdev/fb.h> +#include <subdev/mmu/vmm.h> + +#include <nvif/class.h> + +struct nv04_dmaobj { + struct nvkm_dmaobj base; + bool clone; + u32 flags0; + u32 flags2; +}; + +static int +nv04_dmaobj_bind(struct nvkm_dmaobj *base, struct nvkm_gpuobj *parent, + int align, struct nvkm_gpuobj **pgpuobj) +{ + struct nv04_dmaobj *dmaobj = nv04_dmaobj(base); + struct nvkm_device *device = dmaobj->base.dma->engine.subdev.device; + u64 offset = dmaobj->base.start & 0xfffff000; + u64 adjust = dmaobj->base.start & 0x00000fff; + u32 length = dmaobj->base.limit - dmaobj->base.start; + int ret; + + if (dmaobj->clone) { + struct nvkm_memory *pgt = + device->mmu->vmm->pd->pt[0]->memory; + if (!dmaobj->base.start) + return nvkm_gpuobj_wrap(pgt, pgpuobj); + nvkm_kmap(pgt); + offset = nvkm_ro32(pgt, 8 + (offset >> 10)); + offset &= 0xfffff000; + nvkm_done(pgt); + } + + ret = nvkm_gpuobj_new(device, 16, align, false, parent, pgpuobj); + if (ret == 0) { + nvkm_kmap(*pgpuobj); + nvkm_wo32(*pgpuobj, 0x00, dmaobj->flags0 | (adjust << 20)); + nvkm_wo32(*pgpuobj, 0x04, length); + nvkm_wo32(*pgpuobj, 0x08, dmaobj->flags2 | offset); + nvkm_wo32(*pgpuobj, 0x0c, dmaobj->flags2 | offset); + nvkm_done(*pgpuobj); + } + + return ret; +} + +static const struct nvkm_dmaobj_func +nv04_dmaobj_func = { + .bind = nv04_dmaobj_bind, +}; + +int +nv04_dmaobj_new(struct nvkm_dma *dma, const struct nvkm_oclass *oclass, + void *data, u32 size, struct nvkm_dmaobj **pdmaobj) +{ + struct nvkm_device *device = dma->engine.subdev.device; + struct nv04_dmaobj *dmaobj; + int ret; + + if (!(dmaobj = kzalloc(sizeof(*dmaobj), GFP_KERNEL))) + return -ENOMEM; + *pdmaobj = &dmaobj->base; + + ret = nvkm_dmaobj_ctor(&nv04_dmaobj_func, dma, oclass, + &data, &size, &dmaobj->base); + if (ret) + return ret; + + if (dmaobj->base.target == NV_MEM_TARGET_VM) { + if (device->mmu->func == &nv04_mmu) + dmaobj->clone = true; + dmaobj->base.target = NV_MEM_TARGET_PCI; + dmaobj->base.access = NV_MEM_ACCESS_RW; + } + + dmaobj->flags0 = oclass->base.oclass; + switch (dmaobj->base.target) { + case NV_MEM_TARGET_VRAM: + dmaobj->flags0 |= 0x00003000; + break; + case NV_MEM_TARGET_PCI: + dmaobj->flags0 |= 0x00023000; + break; + case NV_MEM_TARGET_PCI_NOSNOOP: + dmaobj->flags0 |= 0x00033000; + break; + default: + return -EINVAL; + } + + switch (dmaobj->base.access) { + case NV_MEM_ACCESS_RO: + dmaobj->flags0 |= 0x00004000; + break; + case NV_MEM_ACCESS_WO: + dmaobj->flags0 |= 0x00008000; + fallthrough; + case NV_MEM_ACCESS_RW: + dmaobj->flags2 |= 0x00000002; + break; + default: + return -EINVAL; + } + + return 0; +} |