/*
* 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 "uvmm.h"
#include "umem.h"
#include "ummu.h"
#include <core/client.h>
#include <core/memory.h>
#include <nvif/if000c.h>
#include <nvif/unpack.h>
static const struct nvkm_object_func nvkm_uvmm;
struct nvkm_vmm *
nvkm_uvmm_search(struct nvkm_client *client, u64 handle)
{
struct nvkm_object *object;
object = nvkm_object_search(client, handle, &nvkm_uvmm);
if (IS_ERR(object))
return (void *)object;
return nvkm_vmm_ref(nvkm_uvmm(object)->vmm);
}
static int
nvkm_uvmm_mthd_pfnclr(struct nvkm_uvmm *uvmm, void *argv, u32 argc)
{
union {
struct nvif_vmm_pfnclr_v0 v0;
} *args = argv;
struct nvkm_vmm *vmm = uvmm->vmm;
int ret = -ENOSYS;
u64 addr, size;
if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
addr = args->v0.addr;
size = args->v0.size;
} else
return ret;
if (nvkm_vmm_in_managed_range(vmm, addr, size) && vmm->managed.raw)
return -EINVAL;
if (size) {
mutex_lock(&vmm->mutex.vmm);
ret = nvkm_vmm_pfn_unmap(vmm, addr, size);
mutex_unlock(&vmm->mutex.vmm);
}
return ret;
}
static int
nvkm_uvmm_mthd_pfnmap(struct nvkm_uvmm *uvmm, void *argv, u32 argc)
{
union {
struct nvif_vmm_pfnmap_v0 v0;
} *args = argv;
struct nvkm_vmm *vmm = uvmm->vmm;
int ret = -ENOSYS;
u64 addr, size, *phys;
u8 page;
if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, true))) {
page = args->v0.page;
addr = args->v0.addr;
size = args->v0.size;
phys = args->v0.phys;
if (argc != (size >> page) * sizeof(args->v0.phys[0]))
return -EINVAL;
} else
return ret;
if (nvkm_vmm_in_managed_range(vmm, addr, size) && vmm->managed.raw)
return -EINVAL;
if (size) {
mutex_lock(&vmm->mutex.vmm);
ret = nvkm_vmm_pfn_map(vmm, page, addr, size, phys);
mutex_unlock(&vmm->mutex.vmm);
}
return ret;
}
static int
nvkm_uvmm_mthd_unmap(struct nvkm_uvmm *uvmm, void *argv, u32 argc)
{
union {
struct nvif_vmm_unmap_v0 v0;
} *args = argv;
struct nvkm_vmm *vmm = uvmm->vmm;
struct nvkm_vma *vma;
int ret = -ENOSYS;
u64 addr;
if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
addr = args->v0.addr;
} else
return ret;
if (nvkm_vmm_in_managed_range(vmm, addr, 0) && vmm->managed.raw)
return -EINVAL;
mutex_lock(&vmm->mutex.vmm);
vma = nvkm_vmm_node_search(vmm, addr);
if (ret = -ENOENT, !vma || vma->addr != addr) {
VMM_DEBUG(vmm, "lookup %016llx: %016llx",
addr, vma ? vma->addr : ~0ULL);
goto done;
}
if (ret = -ENOENT, vma->busy) {
VMM_DEBUG(vmm, "denied %016llx: %d", addr, vma->busy);
goto done;
}
if (ret = -EINVAL, !vma->memory) {
VMM_DEBUG(vmm, "unmapped");
goto done;
}
nvkm_vmm_unmap_locked(vmm, vma, false);
ret = 0;
done:
mutex_unlock(&vmm->mutex.vmm);
return ret;
}
static int
nvkm_uvmm_mthd_map(struct nvkm_uvmm *uvmm, void *argv, u32 argc)
{
struct nvkm_client *client = uvmm->object.client;
union {
struct nvif_vmm_map_v0 v0;
} *args = argv;
u64 addr, size, handle, offset;
struct nvkm_vmm *vmm = uvmm->vmm;
struct nvkm_vma *vma;
struct nvkm_memory *memory;
int ret = -ENOSYS;
if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, true))) {
addr = args->v0.addr;
size = args->v0.size;
handle = args->v0.memory;
offset = args->v0.offset;
} else
return ret;
if (nvkm_vmm_in_managed_range(vmm, addr, size) && vmm->managed.raw)
return -EINVAL;
memory = nvkm_umem_search(client, handle);
if (IS_ERR(memory)) {
VMM_DEBUG(vmm, "memory %016llx %ld\n", handle, PTR_ERR(memory));
return PTR_ERR(memory);
}
mutex_lock(&vmm->mutex.vmm);
if (ret = -ENOENT, !(vma = nvkm_vmm_node_search(vmm, addr))) {
VMM_DEBUG(vmm, "lookup %016llx", addr);
goto fail;
}
if (ret = -ENOENT, vma->busy) {
VMM_DEBUG(vmm, "denied %016llx: %d", addr, vma->busy);
goto fail;
}
if (ret = -EINVAL, vma->mapped && !vma->memory) {
VMM_DEBUG(vmm, "pfnmap %016llx", addr);
goto fail;
}
if (ret = -EINVAL, vma->addr != addr || vma->size != size) {
if (addr + size > vma->addr + vma->size || vma->memory ||
(vma->refd == NVKM_VMA_PAGE_NONE && !vma->mapref)) {
VMM_DEBUG(vmm, "split %d %d %d "
"%016llx %016llx %016llx %016llx",
!!vma->memory, vma->refd, vma->mapref,
addr, size, vma->addr, (u64)vma->size);
goto fail;
}
vma = nvkm_vmm_node_split(vmm, vma, addr, size);
if (!vma) {
ret = -ENOMEM;
goto fail;
}
}
vma->busy = true;
mutex_unlock(&vmm->mutex.vmm);
ret = nvkm_memory_map(memory, offset, vmm, vma, argv, argc);
if (ret == 0) {
/* Successful map will clear vma->busy. */
nvkm_memory_unref(&memory);
return 0;
}
mutex_lock(&vmm->mutex.vmm);
vma->busy = false;
nvkm_vmm_unmap_region(vmm, vma);
fail:
mutex_unlock(&vmm->mutex.vmm);
nvkm_memory_unref(&memory);
return ret;
}
static int
nvkm_uvmm_mthd_put(struct nvkm_uvmm *uvmm, void *argv, u32 argc)
{
union {
struct nvif_vmm_put_v0 v0;
} *args = argv;
struct nvkm_vmm *vmm = uvmm->vmm;
struct nvkm_vma *vma;
int ret = -ENOSYS;
u64 addr;
if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
addr = args->v0.addr;
} else
return ret;
mutex_lock(&vmm->mutex.vmm);
vma = nvkm_vmm_node_search(vmm, args->v0.addr);
if (ret = -ENOENT, !vma || vma->addr != addr || vma->part) {
VMM_DEBUG(vmm, "lookup %016llx: %016llx %d", addr,
vma ? vma->addr : ~0ULL, vma ? vma->part : 0);
goto done;
}
if (ret = -ENOENT, vma->busy) {
VMM_DEBUG(vmm, "denied %016llx: %d", addr, vma->busy);
goto done;
}
nvkm_vmm_put_locked(vmm, vma);
ret = 0;
done:
mutex_unlock(&vmm->mutex.vmm);
return ret;
}
static int
nvkm_uvmm_mthd_get(struct nvkm_uvmm *uvmm, void *argv, u32 argc)
{
union {
struct nvif_vmm_get_v0 v0;
} *args = argv;
struct nvkm_vmm *vmm = uvmm->vmm;
struct nvkm_vma *vma;
int ret = -ENOSYS;
bool getref, mapref, sparse;
u8 page, align;
u64 size;
if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
getref = args->v0.type == NVIF_VMM_GET_V0_PTES;
mapref = args->v0.type == NVIF_VMM_GET_V0_ADDR;
sparse = args->v0.sparse;
page = args->v0.page;
align = args->v0.align;
size = args->v0.size;
} else
return ret;
mutex_lock(&vmm->mutex.vmm);
ret = nvkm_vmm_get_locked(vmm, getref, mapref, sparse,
page, align, size, &vma);
mutex_unlock(&vmm->mutex.vmm);
if (ret)
return ret;
args->v0.addr = vma->addr;
return ret;
}
static int
nvkm_uvmm_mthd_page(struct nvkm_uvmm *uvmm, void *argv, u32 argc)
{
union {
struct nvif_vmm_page_v0 v0;
} *args = argv;
const struct nvkm_vmm_page *page;
int ret = -ENOSYS;
u8 type, index, nr;
page = uvmm->vmm->func->page;
for (nr = 0; page[nr].shift; nr++);
if (!(nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
if ((index = args->v0.index) >= nr)
return -EINVAL;
type = page[index].type;
args->v0.shift = page[index].shift;
args->v0.sparse = !!(type & NVKM_VMM_PAGE_SPARSE);
args->v0.vram = !!(type & NVKM_VMM_PAGE_VRAM);
args->v0.host = !!(type & NVKM_VMM_PAGE_HOST);
args->v0.comp = !!(type & NVKM_VMM_PAGE_COMP);
} else
return -ENOSYS;
return 0;
}
static inline int
nvkm_uvmm_page_index(struct nvkm_uvmm *uvmm, u64 size, u8 shift, u8 *refd)
{
struct nvkm_vmm *vmm = uvmm->vmm;
const struct nvkm_vmm_page *page;
if (likely(shift)) {
for (page = vmm->func->page; page->shift; page++) {
if (shift == page->shift)
break;
}
if (!page->shift || !IS_ALIGNED(size, 1ULL << page->shift)) {
VMM_DEBUG(vmm, "page %d %016llx", shift, size);
return -EINVAL;
}
} else {
return -EINVAL;
}
*refd = page - vmm->func->page;
return 0;
}
static int
nvkm_uvmm_mthd_raw_get(struct nvkm_uvmm *uvmm, struct nvif_vmm_raw_v0 *args)
{
struct nvkm_vmm *vmm = uvmm->vmm;
u8 refd;
int ret;
if (!nvkm_vmm_in_managed_range(vmm, args->addr, args->size))
return -EINVAL;
ret = nvkm_uvmm_page_index(uvmm, args->size, args->shift, &refd);
if (ret)
return ret;
return nvkm_vmm_raw_get(vmm, args->addr, args->size, refd);
}
static int
nvkm_uvmm_mthd_raw_put(struct nvkm_uvmm *uvmm, struct nvif_vmm_raw_v0 *args)
{
struct nvkm_vmm *vmm = uvmm->vmm;
u8 refd;
int ret;
if (!nvkm_vmm_in_managed_range(vmm, args->addr, args->size))
return -EINVAL;
ret = nvkm_uvmm_page_index(uvmm, args->size, args->shift, &refd);
if (ret)
return ret;
nvkm_vmm_raw_put(vmm, args->addr, args->size, refd);
return 0;
}
static int
nvkm_uvmm_mthd_raw_map(struct nvkm_uvmm *uvmm, struct nvif_vmm_raw_v0 *args)
{
struct nvkm_client *client = uvmm->object.client;
struct nvkm_vmm *vmm = uvmm->vmm;
struct nvkm_vma vma = {
.addr = args->addr,
.size = args->size,
.used = true,
.mapref = false,
.no_comp = true,
};
struct nvkm_memory *memory;
void *argv = (void *)(uintptr_t)args->argv;
unsigned int argc = args->argc;
u64 handle = args->memory;
u8 refd;
int ret;
if (!nvkm_vmm_in_managed_range(vmm, args->addr, args->size))
return -EINVAL;
ret = nvkm_uvmm_page_index(uvmm, args->size, args->shift, &refd);
if (ret)
return ret;
vma.page = vma.refd = refd;
memory = nvkm_umem_search(client, args->memory);
if (IS_ERR(memory)) {
VMM_DEBUG(vmm, "memory %016llx %ld\n", handle, PTR_ERR(memory));
return PTR_ERR(memory);
}
ret = nvkm_memory_map(memory, args->offset, vmm, &vma, argv, argc);
nvkm_memory_unref(&vma.memory);
nvkm_memory_unref(&memory);
return ret;
}
static int
nvkm_uvmm_mthd_raw_unmap(struct nvkm_uvmm *uvmm, struct nvif_vmm_raw_v0 *args)
{
struct nvkm_vmm *vmm = uvmm->vmm;
u8 refd;
int ret;
if (!nvkm_vmm_in_managed_range(vmm, args->addr, args->size))
return -EINVAL;
ret = nvkm_uvmm_page_index(uvmm, args->size, args->shift, &refd);
if (ret)
return ret;
nvkm_vmm_raw_unmap(vmm, args->addr, args->size,
args->sparse, refd);
return 0;
}
static int
nvkm_uvmm_mthd_raw_sparse(struct nvkm_uvmm *uvmm, struct nvif_vmm_raw_v0 *args)
{
struct nvkm_vmm *vmm = uvmm->vmm;
if (!nvkm_vmm_in_managed_range(vmm, args->addr, args->size))
return -EINVAL;
return nvkm_vmm_raw_sparse(vmm, args->addr, args->size, args->ref);
}
static int
nvkm_uvmm_mthd_raw(struct nvkm_uvmm *uvmm, void *argv, u32 argc)
{
union {
struct nvif_vmm_raw_v0 v0;
} *args = argv;
int ret = -ENOSYS;
if (!uvmm->vmm->managed.raw)
return -EINVAL;
if ((ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, true)))
return ret;
switch (args->v0.op) {
case NVIF_VMM_RAW_V0_GET:
return nvkm_uvmm_mthd_raw_get(uvmm, &args->v0);
case NVIF_VMM_RAW_V0_PUT:
return nvkm_uvmm_mthd_raw_put(uvmm, &args->v0);
case NVIF_VMM_RAW_V0_MAP:
return nvkm_uvmm_mthd_raw_map(uvmm, &args->v0);
case NVIF_VMM_RAW_V0_UNMAP:
return nvkm_uvmm_mthd_raw_unmap(uvmm, &args->v0);
case NVIF_VMM_RAW_V0_SPARSE:
return nvkm_uvmm_mthd_raw_sparse(uvmm, &args->v0);
default:
return -EINVAL;
};
}
static int
nvkm_uvmm_mthd(struct nvkm_object *object, u32 mthd, void *argv, u32 argc)
{
struct nvkm_uvmm *uvmm = nvkm_uvmm(object);
switch (mthd) {
case NVIF_VMM_V0_PAGE : return nvkm_uvmm_mthd_page (uvmm, argv, argc);
case NVIF_VMM_V0_GET : return nvkm_uvmm_mthd_get (uvmm, argv, argc);
case NVIF_VMM_V0_PUT : return nvkm_uvmm_mthd_put (uvmm, argv, argc);
case NVIF_VMM_V0_MAP : return nvkm_uvmm_mthd_map (uvmm, argv, argc);
case NVIF_VMM_V0_UNMAP : return nvkm_uvmm_mthd_unmap (uvmm, argv, argc);
case NVIF_VMM_V0_PFNMAP: return nvkm_uvmm_mthd_pfnmap(uvmm, argv, argc);
case NVIF_VMM_V0_PFNCLR: return nvkm_uvmm_mthd_pfnclr(uvmm, argv, argc);
case NVIF_VMM_V0_RAW : return nvkm_uvmm_mthd_raw (uvmm, argv, argc);
case NVIF_VMM_V0_MTHD(0x00) ... NVIF_VMM_V0_MTHD(0x7f):
if (uvmm->vmm->func->mthd) {
return uvmm->vmm->func->mthd(uvmm->vmm,
uvmm->object.client,
mthd, argv, argc);
}
break;
default:
break;
}
return -EINVAL;
}
static void *
nvkm_uvmm_dtor(struct nvkm_object *object)
{
struct nvkm_uvmm *uvmm = nvkm_uvmm(object);
nvkm_vmm_unref(&uvmm->vmm);
return uvmm;
}
static const struct nvkm_object_func
nvkm_uvmm = {
.dtor = nvkm_uvmm_dtor,
.mthd = nvkm_uvmm_mthd,
};
int
nvkm_uvmm_new(const struct nvkm_oclass *oclass, void *argv, u32 argc,
struct nvkm_object **pobject)
{
struct nvkm_mmu *mmu = nvkm_ummu(oclass->parent)->mmu;
const bool more = oclass->base.maxver >= 0;
union {
struct nvif_vmm_v0 v0;
} *args = argv;
const struct nvkm_vmm_page *page;
struct nvkm_uvmm *uvmm;
int ret = -ENOSYS;
u64 addr, size;
bool managed, raw;
if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, more))) {
managed = args->v0.type == NVIF_VMM_V0_TYPE_MANAGED;
raw = args->v0.type == NVIF_VMM_V0_TYPE_RAW;
addr = args->v0.addr;
size = args->v0.size;
} else
return ret;
if (!(uvmm = kzalloc(sizeof(*uvmm), GFP_KERNEL)))
return -ENOMEM;
nvkm_object_ctor(&nvkm_uvmm, oclass, &uvmm->object);
*pobject = &uvmm->object;
if (!mmu->vmm) {
ret = mmu->func->vmm.ctor(mmu, managed || raw, addr, size,
argv, argc, NULL, "user", &uvmm->vmm);
if (ret)
return ret;
uvmm->vmm->debug = max(uvmm->vmm->debug, oclass->client->debug);
} else {
if (size)
return -EINVAL;
uvmm->vmm = nvkm_vmm_ref(mmu->vmm);
}
uvmm->vmm->managed.raw = raw;
if (mmu->func->promote_vmm) {
ret = mmu->func->promote_vmm(uvmm->vmm);
if (ret)
return ret;
}
page = uvmm->vmm->func->page;
args->v0.page_nr = 0;
while (page && (page++)->shift)
args->v0.page_nr++;
args->v0.addr = uvmm->vmm->start;
args->v0.size = uvmm->vmm->limit;
return 0;
}
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