diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvif/vmm.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvif/vmm.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvif/vmm.c b/drivers/gpu/drm/nouveau/nvif/vmm.c new file mode 100644 index 000000000000..31cdb2d2e1ff --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvif/vmm.c @@ -0,0 +1,167 @@ +/* + * 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/vmm.h> +#include <nvif/mem.h> + +#include <nvif/if000c.h> + +int +nvif_vmm_unmap(struct nvif_vmm *vmm, u64 addr) +{ + return nvif_object_mthd(&vmm->object, NVIF_VMM_V0_UNMAP, + &(struct nvif_vmm_unmap_v0) { .addr = addr }, + sizeof(struct nvif_vmm_unmap_v0)); +} + +int +nvif_vmm_map(struct nvif_vmm *vmm, u64 addr, u64 size, void *argv, u32 argc, + struct nvif_mem *mem, u64 offset) +{ + struct nvif_vmm_map_v0 *args; + u8 stack[16]; + int ret; + + if (sizeof(*args) + argc > sizeof(stack)) { + if (!(args = kmalloc(sizeof(*args) + argc, GFP_KERNEL))) + return -ENOMEM; + } else { + args = (void *)stack; + } + + args->version = 0; + args->addr = addr; + args->size = size; + args->memory = nvif_handle(&mem->object); + args->offset = offset; + memcpy(args->data, argv, argc); + + ret = nvif_object_mthd(&vmm->object, NVIF_VMM_V0_MAP, + args, sizeof(*args) + argc); + if (args != (void *)stack) + kfree(args); + return ret; +} + +void +nvif_vmm_put(struct nvif_vmm *vmm, struct nvif_vma *vma) +{ + if (vma->size) { + WARN_ON(nvif_object_mthd(&vmm->object, NVIF_VMM_V0_PUT, + &(struct nvif_vmm_put_v0) { + .addr = vma->addr, + }, sizeof(struct nvif_vmm_put_v0))); + vma->size = 0; + } +} + +int +nvif_vmm_get(struct nvif_vmm *vmm, enum nvif_vmm_get type, bool sparse, + u8 page, u8 align, u64 size, struct nvif_vma *vma) +{ + struct nvif_vmm_get_v0 args; + int ret; + + args.version = vma->size = 0; + args.sparse = sparse; + args.page = page; + args.align = align; + args.size = size; + + switch (type) { + case ADDR: args.type = NVIF_VMM_GET_V0_ADDR; break; + case PTES: args.type = NVIF_VMM_GET_V0_PTES; break; + case LAZY: args.type = NVIF_VMM_GET_V0_LAZY; break; + default: + WARN_ON(1); + return -EINVAL; + } + + ret = nvif_object_mthd(&vmm->object, NVIF_VMM_V0_GET, + &args, sizeof(args)); + if (ret == 0) { + vma->addr = args.addr; + vma->size = args.size; + } + return ret; +} + +void +nvif_vmm_fini(struct nvif_vmm *vmm) +{ + kfree(vmm->page); + nvif_object_fini(&vmm->object); +} + +int +nvif_vmm_init(struct nvif_mmu *mmu, s32 oclass, u64 addr, u64 size, + void *argv, u32 argc, struct nvif_vmm *vmm) +{ + struct nvif_vmm_v0 *args; + u32 argn = sizeof(*args) + argc; + int ret = -ENOSYS, i; + + vmm->object.client = NULL; + vmm->page = NULL; + + if (!(args = kmalloc(argn, GFP_KERNEL))) + return -ENOMEM; + args->version = 0; + args->addr = addr; + args->size = size; + memcpy(args->data, argv, argc); + + ret = nvif_object_init(&mmu->object, 0, oclass, args, argn, + &vmm->object); + if (ret) + goto done; + + vmm->start = args->addr; + vmm->limit = args->size; + + vmm->page_nr = args->page_nr; + vmm->page = kmalloc(sizeof(*vmm->page) * vmm->page_nr, GFP_KERNEL); + if (!vmm->page) { + ret = -ENOMEM; + goto done; + } + + for (i = 0; i < vmm->page_nr; i++) { + struct nvif_vmm_page_v0 args = { .index = i }; + + ret = nvif_object_mthd(&vmm->object, NVIF_VMM_V0_PAGE, + &args, sizeof(args)); + if (ret) + break; + + vmm->page[i].shift = args.shift; + vmm->page[i].sparse = args.sparse; + vmm->page[i].vram = args.vram; + vmm->page[i].host = args.host; + vmm->page[i].comp = args.comp; + } + +done: + if (ret) + nvif_vmm_fini(vmm); + kfree(args); + return ret; +} |