mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 01:25:35 +07:00
102 lines
2.7 KiB
C
102 lines
2.7 KiB
C
/*
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* Copyright 2017 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <nvif/mem.h>
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#include <nvif/client.h>
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#include <nvif/if000a.h>
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int
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nvif_mem_init_map(struct nvif_mmu *mmu, u8 type, u64 size, struct nvif_mem *mem)
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{
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int ret = nvif_mem_init(mmu, mmu->mem, NVIF_MEM_MAPPABLE | type, 0,
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size, NULL, 0, mem);
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if (ret == 0) {
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ret = nvif_object_map(&mem->object, NULL, 0);
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if (ret)
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nvif_mem_fini(mem);
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}
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return ret;
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}
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void
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nvif_mem_fini(struct nvif_mem *mem)
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{
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nvif_object_fini(&mem->object);
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}
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int
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nvif_mem_init_type(struct nvif_mmu *mmu, s32 oclass, int type, u8 page,
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u64 size, void *argv, u32 argc, struct nvif_mem *mem)
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{
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struct nvif_mem_v0 *args;
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u8 stack[128];
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int ret;
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mem->object.client = NULL;
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if (type < 0)
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return -EINVAL;
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if (sizeof(*args) + argc > sizeof(stack)) {
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if (!(args = kmalloc(sizeof(*args) + argc, GFP_KERNEL)))
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return -ENOMEM;
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} else {
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args = (void *)stack;
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}
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args->version = 0;
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args->type = type;
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args->page = page;
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args->size = size;
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memcpy(args->data, argv, argc);
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ret = nvif_object_init(&mmu->object, 0, oclass, args,
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sizeof(*args) + argc, &mem->object);
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if (ret == 0) {
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mem->type = mmu->type[type].type;
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mem->page = args->page;
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mem->addr = args->addr;
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mem->size = args->size;
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}
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if (args != (void *)stack)
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kfree(args);
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return ret;
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}
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int
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nvif_mem_init(struct nvif_mmu *mmu, s32 oclass, u8 type, u8 page,
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u64 size, void *argv, u32 argc, struct nvif_mem *mem)
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{
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int ret = -EINVAL, i;
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mem->object.client = NULL;
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for (i = 0; ret && i < mmu->type_nr; i++) {
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if ((mmu->type[i].type & type) == type) {
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ret = nvif_mem_init_type(mmu, oclass, i, page, size,
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argv, argc, mem);
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}
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}
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return ret;
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}
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