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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/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[48];
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_array(vmm->page_nr, sizeof(*vmm->page),
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;
}
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