diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvif/mmu.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvif/mmu.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvif/mmu.c b/drivers/gpu/drm/nouveau/nvif/mmu.c new file mode 100644 index 000000000000..15d0dcbf7ab4 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvif/mmu.c @@ -0,0 +1,117 @@ +/* + * Copyright 2017 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. + */ +#include <nvif/mmu.h> + +#include <nvif/class.h> +#include <nvif/if0008.h> + +void +nvif_mmu_fini(struct nvif_mmu *mmu) +{ + kfree(mmu->kind); + kfree(mmu->type); + kfree(mmu->heap); + nvif_object_fini(&mmu->object); +} + +int +nvif_mmu_init(struct nvif_object *parent, s32 oclass, struct nvif_mmu *mmu) +{ + struct nvif_mmu_v0 args; + int ret, i; + + args.version = 0; + mmu->heap = NULL; + mmu->type = NULL; + mmu->kind = NULL; + + ret = nvif_object_init(parent, 0, oclass, &args, sizeof(args), + &mmu->object); + if (ret) + goto done; + + mmu->dmabits = args.dmabits; + mmu->heap_nr = args.heap_nr; + mmu->type_nr = args.type_nr; + mmu->kind_nr = args.kind_nr; + + mmu->heap = kmalloc(sizeof(*mmu->heap) * mmu->heap_nr, GFP_KERNEL); + mmu->type = kmalloc(sizeof(*mmu->type) * mmu->type_nr, GFP_KERNEL); + if (ret = -ENOMEM, !mmu->heap || !mmu->type) + goto done; + + mmu->kind = kmalloc(sizeof(*mmu->kind) * mmu->kind_nr, GFP_KERNEL); + if (!mmu->kind && mmu->kind_nr) + goto done; + + for (i = 0; i < mmu->heap_nr; i++) { + struct nvif_mmu_heap_v0 args = { .index = i }; + + ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_HEAP, + &args, sizeof(args)); + if (ret) + goto done; + + mmu->heap[i].size = args.size; + } + + for (i = 0; i < mmu->type_nr; i++) { + struct nvif_mmu_type_v0 args = { .index = i }; + + ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_TYPE, + &args, sizeof(args)); + if (ret) + goto done; + + mmu->type[i].type = 0; + if (args.vram) mmu->type[i].type |= NVIF_MEM_VRAM; + if (args.host) mmu->type[i].type |= NVIF_MEM_HOST; + if (args.comp) mmu->type[i].type |= NVIF_MEM_COMP; + if (args.disp) mmu->type[i].type |= NVIF_MEM_DISP; + if (args.kind ) mmu->type[i].type |= NVIF_MEM_KIND; + if (args.mappable) mmu->type[i].type |= NVIF_MEM_MAPPABLE; + if (args.coherent) mmu->type[i].type |= NVIF_MEM_COHERENT; + if (args.uncached) mmu->type[i].type |= NVIF_MEM_UNCACHED; + mmu->type[i].heap = args.heap; + } + + if (mmu->kind_nr) { + struct nvif_mmu_kind_v0 *kind; + u32 argc = sizeof(*kind) + sizeof(*kind->data) * mmu->kind_nr; + + if (ret = -ENOMEM, !(kind = kmalloc(argc, GFP_KERNEL))) + goto done; + kind->version = 0; + kind->count = mmu->kind_nr; + + ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_KIND, + kind, argc); + if (ret == 0) + memcpy(mmu->kind, kind->data, kind->count); + kfree(kind); + } + +done: + if (ret) + nvif_mmu_fini(mmu); + return ret; +} |