From 920d2b5ef2157e169d85cb778feca558c56b8370 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Wed, 1 Nov 2017 03:56:19 +1000 Subject: [PATCH] drm/nouveau/mmu: define user interfaces to mmu vmm opertaions Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/include/nvif/if000c.h | 61 +++ drivers/gpu/drm/nouveau/include/nvif/vmm.h | 42 +++ drivers/gpu/drm/nouveau/nvif/Kbuild | 1 + drivers/gpu/drm/nouveau/nvif/vmm.c | 167 +++++++++ .../gpu/drm/nouveau/nvkm/subdev/mmu/Kbuild | 1 + .../gpu/drm/nouveau/nvkm/subdev/mmu/ummu.c | 9 + .../gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c | 352 ++++++++++++++++++ .../gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.h | 14 + 8 files changed, 647 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/include/nvif/vmm.h create mode 100644 drivers/gpu/drm/nouveau/nvif/vmm.c create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c create mode 100644 drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.h diff --git a/drivers/gpu/drm/nouveau/include/nvif/if000c.h b/drivers/gpu/drm/nouveau/include/nvif/if000c.h index 6363e22f9dcc..2928ecd989ad 100644 --- a/drivers/gpu/drm/nouveau/include/nvif/if000c.h +++ b/drivers/gpu/drm/nouveau/include/nvif/if000c.h @@ -1,3 +1,64 @@ #ifndef __NVIF_IF000C_H__ #define __NVIF_IF000C_H__ +struct nvif_vmm_v0 { + __u8 version; + __u8 page_nr; + __u8 pad02[6]; + __u64 addr; + __u64 size; + __u8 data[]; +}; + +#define NVIF_VMM_V0_PAGE 0x00 +#define NVIF_VMM_V0_GET 0x01 +#define NVIF_VMM_V0_PUT 0x02 +#define NVIF_VMM_V0_MAP 0x03 +#define NVIF_VMM_V0_UNMAP 0x04 + +struct nvif_vmm_page_v0 { + __u8 version; + __u8 index; + __u8 shift; + __u8 sparse; + __u8 vram; + __u8 host; + __u8 comp; + __u8 pad07[1]; +}; + +struct nvif_vmm_get_v0 { + __u8 version; +#define NVIF_VMM_GET_V0_ADDR 0x00 +#define NVIF_VMM_GET_V0_PTES 0x01 +#define NVIF_VMM_GET_V0_LAZY 0x02 + __u8 type; + __u8 sparse; + __u8 page; + __u8 align; + __u8 pad05[3]; + __u64 size; + __u64 addr; +}; + +struct nvif_vmm_put_v0 { + __u8 version; + __u8 pad01[7]; + __u64 addr; +}; + +struct nvif_vmm_map_v0 { + __u8 version; + __u8 pad01[7]; + __u64 addr; + __u64 size; + __u64 memory; + __u64 offset; + __u8 data[]; +}; + +struct nvif_vmm_unmap_v0 { + __u8 version; + __u8 pad01[7]; + __u64 addr; +}; #endif diff --git a/drivers/gpu/drm/nouveau/include/nvif/vmm.h b/drivers/gpu/drm/nouveau/include/nvif/vmm.h new file mode 100644 index 000000000000..c5db8a2e82df --- /dev/null +++ b/drivers/gpu/drm/nouveau/include/nvif/vmm.h @@ -0,0 +1,42 @@ +#ifndef __NVIF_VMM_H__ +#define __NVIF_VMM_H__ +#include +struct nvif_mem; +struct nvif_mmu; + +enum nvif_vmm_get { + ADDR, + PTES, + LAZY +}; + +struct nvif_vma { + u64 addr; + u64 size; +}; + +struct nvif_vmm { + struct nvif_object object; + u64 start; + u64 limit; + + struct { + u8 shift; + bool sparse:1; + bool vram:1; + bool host:1; + bool comp:1; + } *page; + int page_nr; +}; + +int nvif_vmm_init(struct nvif_mmu *, s32 oclass, u64 addr, u64 size, + void *argv, u32 argc, struct nvif_vmm *); +void nvif_vmm_fini(struct nvif_vmm *); +int nvif_vmm_get(struct nvif_vmm *, enum nvif_vmm_get, bool sparse, + u8 page, u8 align, u64 size, struct nvif_vma *); +void nvif_vmm_put(struct nvif_vmm *, struct nvif_vma *); +int nvif_vmm_map(struct nvif_vmm *, u64 addr, u64 size, void *argv, u32 argc, + struct nvif_mem *, u64 offset); +int nvif_vmm_unmap(struct nvif_vmm *, u64); +#endif diff --git a/drivers/gpu/drm/nouveau/nvif/Kbuild b/drivers/gpu/drm/nouveau/nvif/Kbuild index 2e0a90b4dda8..f1675a4ab6fa 100644 --- a/drivers/gpu/drm/nouveau/nvif/Kbuild +++ b/drivers/gpu/drm/nouveau/nvif/Kbuild @@ -5,3 +5,4 @@ nvif-y += nvif/driver.o nvif-y += nvif/mem.o nvif-y += nvif/mmu.o nvif-y += nvif/notify.o +nvif-y += nvif/vmm.o 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 +#include + +#include + +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; +} diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/Kbuild b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/Kbuild index 34f5aae8f3a1..352a65f9371c 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/Kbuild +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/Kbuild @@ -32,3 +32,4 @@ nvkm-y += nvkm/subdev/mmu/vmmgp10b.o nvkm-y += nvkm/subdev/mmu/umem.o nvkm-y += nvkm/subdev/mmu/ummu.o +nvkm-y += nvkm/subdev/mmu/uvmm.o diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/ummu.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/ummu.c index ed192ab3728b..353f10f92b77 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/ummu.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/ummu.c @@ -21,6 +21,7 @@ */ #include "ummu.h" #include "umem.h" +#include "uvmm.h" #include @@ -41,6 +42,14 @@ nvkm_ummu_sclass(struct nvkm_object *object, int index, } } + if (mmu->func->vmm.user.oclass) { + if (index-- == 0) { + oclass->base = mmu->func->vmm.user; + oclass->ctor = nvkm_uvmm_new; + return 0; + } + } + return -EINVAL; } diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c new file mode 100644 index 000000000000..fa81d0c1ba41 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.c @@ -0,0 +1,352 @@ +/* + * 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 +#include + +#include +#include + +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_uvmm(object)->vmm; +} + +static int +nvkm_uvmm_mthd_unmap(struct nvkm_uvmm *uvmm, void *argv, u32 argc) +{ + struct nvkm_client *client = uvmm->object.client; + 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; + + mutex_lock(&vmm->mutex); + 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->user && !client->super) || vma->busy) { + VMM_DEBUG(vmm, "denied %016llx: %d %d %d", addr, + vma->user, !client->super, vma->busy); + goto done; + } + + if (ret = -EINVAL, !vma->memory) { + VMM_DEBUG(vmm, "unmapped"); + goto done; + } + + nvkm_vmm_unmap_locked(vmm, vma); + ret = 0; +done: + mutex_unlock(&vmm->mutex); + 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 (IS_ERR((memory = nvkm_umem_search(client, handle)))) { + VMM_DEBUG(vmm, "memory %016llx %ld\n", handle, PTR_ERR(memory)); + return PTR_ERR(memory); + } + + mutex_lock(&vmm->mutex); + if (ret = -ENOENT, !(vma = nvkm_vmm_node_search(vmm, addr))) { + VMM_DEBUG(vmm, "lookup %016llx", addr); + goto fail; + } + + if (ret = -ENOENT, (!vma->user && !client->super) || vma->busy) { + VMM_DEBUG(vmm, "denied %016llx: %d %d %d", addr, + vma->user, !client->super, vma->busy); + 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; + } + + if (vma->addr != addr) { + const u64 tail = vma->size + vma->addr - addr; + if (ret = -ENOMEM, !(vma = nvkm_vma_tail(vma, tail))) + goto fail; + vma->part = true; + nvkm_vmm_node_insert(vmm, vma); + } + + if (vma->size != size) { + const u64 tail = vma->size - size; + struct nvkm_vma *tmp; + if (ret = -ENOMEM, !(tmp = nvkm_vma_tail(vma, tail))) { + nvkm_vmm_unmap_region(vmm, vma); + goto fail; + } + tmp->part = true; + nvkm_vmm_node_insert(vmm, tmp); + } + } + vma->busy = true; + mutex_unlock(&vmm->mutex); + + 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); + vma->busy = false; + nvkm_vmm_unmap_region(vmm, vma); +fail: + mutex_unlock(&vmm->mutex); + nvkm_memory_unref(&memory); + return ret; +} + +static int +nvkm_uvmm_mthd_put(struct nvkm_uvmm *uvmm, void *argv, u32 argc) +{ + struct nvkm_client *client = uvmm->object.client; + 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); + 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->user && !client->super) || vma->busy) { + VMM_DEBUG(vmm, "denied %016llx: %d %d %d", addr, + vma->user, !client->super, vma->busy); + goto done; + } + + nvkm_vmm_put_locked(vmm, vma); + ret = 0; +done: + mutex_unlock(&vmm->mutex); + return ret; +} + +static int +nvkm_uvmm_mthd_get(struct nvkm_uvmm *uvmm, void *argv, u32 argc) +{ + struct nvkm_client *client = uvmm->object.client; + 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); + ret = nvkm_vmm_get_locked(vmm, getref, mapref, sparse, + page, align, size, &vma); + mutex_unlock(&vmm->mutex); + if (ret) + return ret; + + args->v0.addr = vma->addr; + vma->user = !client->super; + 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 (!(ret = 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 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); + 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; + + if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, more))) { + 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, 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); + } + + 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; +} diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.h b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.h new file mode 100644 index 000000000000..71dab55e18a9 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/uvmm.h @@ -0,0 +1,14 @@ +#ifndef __NVKM_UVMM_H__ +#define __NVKM_UVMM_H__ +#define nvkm_uvmm(p) container_of((p), struct nvkm_uvmm, object) +#include +#include "vmm.h" + +struct nvkm_uvmm { + struct nvkm_object object; + struct nvkm_vmm *vmm; +}; + +int nvkm_uvmm_new(const struct nvkm_oclass *, void *argv, u32 argc, + struct nvkm_object **); +#endif