diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/dma/user.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/dma/user.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/dma/user.c b/drivers/gpu/drm/nouveau/nvkm/engine/dma/user.c new file mode 100644 index 000000000000..11571dbd9e91 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/engine/dma/user.c @@ -0,0 +1,121 @@ +/* + * 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 "user.h" + +#include <core/client.h> +#include <subdev/fb.h> +#include <subdev/instmem.h> + +#include <nvif/class.h> +#include <nvif/unpack.h> + +int +nvkm_dmaobj_create_(struct nvkm_object *parent, + struct nvkm_object *engine, + struct nvkm_oclass *oclass, void **pdata, u32 *psize, + int length, void **pobject) +{ + union { + struct nv_dma_v0 v0; + } *args = *pdata; + struct nvkm_instmem *instmem = nvkm_instmem(parent); + struct nvkm_client *client = nvkm_client(parent); + struct nvkm_device *device = nv_device(parent); + struct nvkm_fb *fb = nvkm_fb(parent); + struct nvkm_dmaobj *dmaobj; + void *data = *pdata; + u32 size = *psize; + int ret; + + ret = nvkm_object_create_(parent, engine, oclass, 0, length, pobject); + dmaobj = *pobject; + if (ret) + return ret; + + nvif_ioctl(parent, "create dma size %d\n", *psize); + if (nvif_unpack(args->v0, 0, 0, true)) { + nvif_ioctl(parent, "create dma vers %d target %d access %d " + "start %016llx limit %016llx\n", + args->v0.version, args->v0.target, args->v0.access, + args->v0.start, args->v0.limit); + dmaobj->target = args->v0.target; + dmaobj->access = args->v0.access; + dmaobj->start = args->v0.start; + dmaobj->limit = args->v0.limit; + } else + return ret; + + *pdata = data; + *psize = size; + + if (dmaobj->start > dmaobj->limit) + return -EINVAL; + + switch (dmaobj->target) { + case NV_DMA_V0_TARGET_VM: + dmaobj->target = NV_MEM_TARGET_VM; + break; + case NV_DMA_V0_TARGET_VRAM: + if (!client->super) { + if (dmaobj->limit >= fb->ram->size - instmem->reserved) + return -EACCES; + if (device->card_type >= NV_50) + return -EACCES; + } + dmaobj->target = NV_MEM_TARGET_VRAM; + break; + case NV_DMA_V0_TARGET_PCI: + if (!client->super) + return -EACCES; + dmaobj->target = NV_MEM_TARGET_PCI; + break; + case NV_DMA_V0_TARGET_PCI_US: + case NV_DMA_V0_TARGET_AGP: + if (!client->super) + return -EACCES; + dmaobj->target = NV_MEM_TARGET_PCI_NOSNOOP; + break; + default: + return -EINVAL; + } + + switch (dmaobj->access) { + case NV_DMA_V0_ACCESS_VM: + dmaobj->access = NV_MEM_ACCESS_VM; + break; + case NV_DMA_V0_ACCESS_RD: + dmaobj->access = NV_MEM_ACCESS_RO; + break; + case NV_DMA_V0_ACCESS_WR: + dmaobj->access = NV_MEM_ACCESS_WO; + break; + case NV_DMA_V0_ACCESS_RDWR: + dmaobj->access = NV_MEM_ACCESS_RW; + break; + default: + return -EINVAL; + } + + return ret; +} |