diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv50.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv50.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv50.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv50.c new file mode 100644 index 000000000000..db27381b67c6 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv50.c @@ -0,0 +1,94 @@ +/* + * 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 "vmm.h" + +#include <nvif/if500d.h> +#include <nvif/unpack.h> + +static const struct nvkm_vmm_desc_func +nv50_vmm_pgt = { +}; + +static const struct nvkm_vmm_desc_func +nv50_vmm_pgd = { +}; + +static const struct nvkm_vmm_desc +nv50_vmm_desc_12[] = { + { PGT, 17, 8, 0x1000, &nv50_vmm_pgt }, + { PGD, 11, 0, 0x0000, &nv50_vmm_pgd }, + {} +}; + +static const struct nvkm_vmm_desc +nv50_vmm_desc_16[] = { + { PGT, 13, 8, 0x1000, &nv50_vmm_pgt }, + { PGD, 11, 0, 0x0000, &nv50_vmm_pgd }, + {} +}; + +static void +nv50_vmm_part(struct nvkm_vmm *vmm, struct nvkm_memory *inst) +{ + struct nvkm_vmm_join *join; + + list_for_each_entry(join, &vmm->join, head) { + if (join->inst == inst) { + list_del(&join->head); + kfree(join); + break; + } + } +} + +static int +nv50_vmm_join(struct nvkm_vmm *vmm, struct nvkm_memory *inst) +{ + struct nvkm_vmm_join *join; + + if (!(join = kmalloc(sizeof(*join), GFP_KERNEL))) + return -ENOMEM; + join->inst = inst; + list_add_tail(&join->head, &vmm->join); + return 0; +} + +static const struct nvkm_vmm_func +nv50_vmm = { + .join = nv50_vmm_join, + .part = nv50_vmm_part, + .page_block = 1 << 29, + .page = { + { 16, &nv50_vmm_desc_16[0], NVKM_VMM_PAGE_xVxC }, + { 12, &nv50_vmm_desc_12[0], NVKM_VMM_PAGE_xVHx }, + {} + } +}; + +int +nv50_vmm_new(struct nvkm_mmu *mmu, u64 addr, u64 size, void *argv, u32 argc, + struct lock_class_key *key, const char *name, + struct nvkm_vmm **pvmm) +{ + return nv04_vmm_new_(&nv50_vmm, mmu, 0, addr, size, + argv, argc, key, name, pvmm); +} |