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/*
* 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/mem.h>
#include <nvif/client.h>
#include <nvif/if000a.h>
int
nvif_mem_init_map(struct nvif_mmu *mmu, u8 type, u64 size, struct nvif_mem *mem)
{
int ret = nvif_mem_init(mmu, mmu->mem, NVIF_MEM_MAPPABLE | type, 0,
size, NULL, 0, mem);
if (ret == 0) {
ret = nvif_object_map(&mem->object, NULL, 0);
if (ret)
nvif_mem_fini(mem);
}
return ret;
}
void
nvif_mem_fini(struct nvif_mem *mem)
{
nvif_object_fini(&mem->object);
}
int
nvif_mem_init_type(struct nvif_mmu *mmu, s32 oclass, int type, u8 page,
u64 size, void *argv, u32 argc, struct nvif_mem *mem)
{
struct nvif_mem_v0 *args;
u8 stack[128];
int ret;
mem->object.client = NULL;
if (type < 0)
return -EINVAL;
if (sizeof(*args) + argc > sizeof(stack)) {
if (!(args = kmalloc(sizeof(*args) + argc, GFP_KERNEL)))
return -ENOMEM;
} else {
args = (void *)stack;
}
args->version = 0;
args->type = type;
args->page = page;
args->size = size;
memcpy(args->data, argv, argc);
ret = nvif_object_init(&mmu->object, 0, oclass, args,
sizeof(*args) + argc, &mem->object);
if (ret == 0) {
mem->type = mmu->type[type].type;
mem->page = args->page;
mem->addr = args->addr;
mem->size = args->size;
}
if (args != (void *)stack)
kfree(args);
return ret;
}
int
nvif_mem_init(struct nvif_mmu *mmu, s32 oclass, u8 type, u8 page,
u64 size, void *argv, u32 argc, struct nvif_mem *mem)
{
int ret = -EINVAL, i;
mem->object.client = NULL;
for (i = 0; ret && i < mmu->type_nr; i++) {
if ((mmu->type[i].type & type) == type) {
ret = nvif_mem_init_type(mmu, oclass, i, page, size,
argv, argc, mem);
}
}
return ret;
}
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