diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/engine/dmaobj/base.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/core/engine/dmaobj/base.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/engine/dmaobj/base.c b/drivers/gpu/drm/nouveau/core/engine/dmaobj/base.c new file mode 100644 index 0000000..5103e88 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/engine/dmaobj/base.c @@ -0,0 +1,120 @@ +/* + * 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/object.h> +#include <core/class.h> + +#include <subdev/fb.h> +#include <engine/dmaobj.h> + +static int +nouveau_dmaobj_ctor(struct nouveau_object *parent, + struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 size, + struct nouveau_object **pobject) +{ + struct nouveau_dmaeng *dmaeng = (void *)engine; + struct nouveau_dmaobj *dmaobj; + struct nouveau_gpuobj *gpuobj; + struct nv_dma_class *args = data; + int ret; + + if (size < sizeof(*args)) + return -EINVAL; + + ret = nouveau_object_create(parent, engine, oclass, 0, &dmaobj); + *pobject = nv_object(dmaobj); + if (ret) + return ret; + + switch (args->flags & NV_DMA_TARGET_MASK) { + case NV_DMA_TARGET_VM: + dmaobj->target = NV_MEM_TARGET_VM; + break; + case NV_DMA_TARGET_VRAM: + dmaobj->target = NV_MEM_TARGET_VRAM; + break; + case NV_DMA_TARGET_PCI: + dmaobj->target = NV_MEM_TARGET_PCI; + break; + case NV_DMA_TARGET_PCI_US: + case NV_DMA_TARGET_AGP: + dmaobj->target = NV_MEM_TARGET_PCI_NOSNOOP; + break; + default: + return -EINVAL; + } + + switch (args->flags & NV_DMA_ACCESS_MASK) { + case NV_DMA_ACCESS_VM: + dmaobj->access = NV_MEM_ACCESS_VM; + break; + case NV_DMA_ACCESS_RD: + dmaobj->access = NV_MEM_ACCESS_RO; + break; + case NV_DMA_ACCESS_WR: + dmaobj->access = NV_MEM_ACCESS_WO; + break; + case NV_DMA_ACCESS_RDWR: + dmaobj->access = NV_MEM_ACCESS_RW; + break; + default: + return -EINVAL; + } + + dmaobj->start = args->start; + dmaobj->limit = args->limit; + dmaobj->conf0 = args->conf0; + + switch (nv_mclass(parent)) { + case NV_DEVICE_CLASS: + /* delayed, or no, binding */ + break; + default: + ret = dmaeng->bind(dmaeng, *pobject, dmaobj, &gpuobj); + if (ret == 0) { + nouveau_object_ref(NULL, pobject); + *pobject = nv_object(gpuobj); + } + break; + } + + return ret; +} + +static struct nouveau_ofuncs +nouveau_dmaobj_ofuncs = { + .ctor = nouveau_dmaobj_ctor, + .dtor = nouveau_object_destroy, + .init = nouveau_object_init, + .fini = nouveau_object_fini, +}; + +struct nouveau_oclass +nouveau_dmaobj_sclass[] = { + { NV_DMA_FROM_MEMORY_CLASS, &nouveau_dmaobj_ofuncs }, + { NV_DMA_TO_MEMORY_CLASS, &nouveau_dmaobj_ofuncs }, + { NV_DMA_IN_MEMORY_CLASS, &nouveau_dmaobj_ofuncs }, + {} +}; |