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 | 138 |
1 files changed, 138 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 000000000..797131ed7 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/engine/dma/user.c @@ -0,0 +1,138 @@ +/* + * 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 <core/gpuobj.h> +#include <subdev/fb.h> + +#include <nvif/cl0002.h> +#include <nvif/unpack.h> + +static const struct nvkm_object_func nvkm_dmaobj_func; +struct nvkm_dmaobj * +nvkm_dmaobj_search(struct nvkm_client *client, u64 handle) +{ + struct nvkm_object *object; + + object = nvkm_object_search(client, handle, &nvkm_dmaobj_func); + if (IS_ERR(object)) + return (void *)object; + + return nvkm_dmaobj(object); +} + +static int +nvkm_dmaobj_bind(struct nvkm_object *base, struct nvkm_gpuobj *gpuobj, + int align, struct nvkm_gpuobj **pgpuobj) +{ + struct nvkm_dmaobj *dmaobj = nvkm_dmaobj(base); + return dmaobj->func->bind(dmaobj, gpuobj, align, pgpuobj); +} + +static void * +nvkm_dmaobj_dtor(struct nvkm_object *base) +{ + return nvkm_dmaobj(base); +} + +static const struct nvkm_object_func +nvkm_dmaobj_func = { + .dtor = nvkm_dmaobj_dtor, + .bind = nvkm_dmaobj_bind, +}; + +int +nvkm_dmaobj_ctor(const struct nvkm_dmaobj_func *func, struct nvkm_dma *dma, + const struct nvkm_oclass *oclass, void **pdata, u32 *psize, + struct nvkm_dmaobj *dmaobj) +{ + union { + struct nv_dma_v0 v0; + } *args = *pdata; + struct nvkm_object *parent = oclass->parent; + void *data = *pdata; + u32 size = *psize; + int ret = -ENOSYS; + + nvkm_object_ctor(&nvkm_dmaobj_func, oclass, &dmaobj->object); + dmaobj->func = func; + dmaobj->dma = dma; + + nvif_ioctl(parent, "create dma size %d\n", *psize); + if (!(ret = nvif_unpack(ret, &data, &size, 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: + dmaobj->target = NV_MEM_TARGET_VRAM; + break; + case NV_DMA_V0_TARGET_PCI: + dmaobj->target = NV_MEM_TARGET_PCI; + break; + case NV_DMA_V0_TARGET_PCI_US: + case NV_DMA_V0_TARGET_AGP: + 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; +} |