From: Ben Skeggs <bskeggs@redhat.com>
Date: Wed, 1 Nov 2017 03:56:19 +1000
Subject: drm/nouveau/mmu/gm200,gm20b: implement new vmm backend
Git-commit: e12cf6ad43888c152c3b2edb59525587cd98a227
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Adds support for:
- 64KiB big page size.
- System-memory PTs.
- LPTE "invalid" state.
- (Tegra) Use of video memory aperture.
- Sparse PDEs/PTEs.
- Additional blocklinear kinds.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/nouveau/include/nvif/ifb00d.h | 13 +++++
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gm200.c | 54 +++++++++++++++++----
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gm20b.c | 12 ----
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/priv.h | 2
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgm200.c | 34 +++++++++++++
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgm20b.c | 6 ++
6 files changed, 101 insertions(+), 20 deletions(-)
--- a/drivers/gpu/drm/nouveau/include/nvif/ifb00d.h
+++ b/drivers/gpu/drm/nouveau/include/nvif/ifb00d.h
@@ -11,4 +11,17 @@ struct gm200_vmm_v0 {
__u8 version;
__u8 bigpage;
};
+
+struct gm200_vmm_map_vn {
+ /* nvif_vmm_map_vX ... */
+};
+
+struct gm200_vmm_map_v0 {
+ /* nvif_vmm_map_vX ... */
+ __u8 version;
+ __u8 vol;
+ __u8 ro;
+ __u8 priv;
+ __u8 kind;
+};
#endif
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gm200.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gm200.c
@@ -25,6 +25,48 @@
#include <nvif/class.h>
+const u8 *
+gm200_mmu_kind(struct nvkm_mmu *mmu, int *count)
+{
+ static const u8
+ kind[256] = {
+ 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0xff, 0x01, /* 0x00 */
+ 0x01, 0x01, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0x11, 0xff, 0xff, 0xff, 0xff, 0xff, 0x11, /* 0x10 */
+ 0x11, 0x11, 0x11, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x26, 0x27, /* 0x20 */
+ 0x28, 0x29, 0x2a, 0x2b, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x30 */
+ 0xff, 0xff, 0x26, 0x27, 0x28, 0x29, 0x26, 0x27,
+ 0x28, 0x29, 0xff, 0xff, 0xff, 0xff, 0x46, 0xff, /* 0x40 */
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0x46, 0x46, 0x46, 0x46, 0xff, 0xff, 0xff, /* 0x50 */
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x60 */
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x70 */
+ 0xff, 0xff, 0xff, 0x7b, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7b, 0x7b, /* 0x80 */
+ 0x7b, 0x7b, 0xff, 0x8b, 0x8c, 0x8d, 0x8e, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0x90 */
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0x8b, 0x8c, 0x8d, 0x8e, 0xa7, /* 0xa0 */
+ 0xa8, 0xa9, 0xaa, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0xb0 */
+ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xa7,
+ 0xa8, 0xa9, 0xaa, 0xc3, 0xff, 0xff, 0xff, 0xff, /* 0xc0 */
+ 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xc3, 0xc3,
+ 0xc3, 0xc3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 0xd0 */
+ 0xfe, 0xff, 0xff, 0xfe, 0xff, 0xfe, 0xff, 0xfe,
+ 0xfe, 0xff, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xff, /* 0xe0 */
+ 0xff, 0xfe, 0xff, 0xfe, 0xff, 0xfe, 0xfe, 0xff,
+ 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, /* 0xf0 */
+ 0xfe, 0xfe, 0xfe, 0xfe, 0xff, 0xfd, 0xfe, 0xff
+ };
+ *count = ARRAY_SIZE(kind);
+ return kind;
+}
+
static const struct nvkm_mmu_func
gm200_mmu = {
.limit = (1ULL << 40),
@@ -32,12 +74,8 @@ gm200_mmu = {
.pgt_bits = 27 - 12,
.spg_shift = 12,
.lpg_shift = 17,
- .map_pgt = gf100_vm_map_pgt,
- .map = gf100_vm_map,
- .map_sg = gf100_vm_map_sg,
- .unmap = gf100_vm_unmap,
- .flush = gf100_vm_flush,
.vmm = {{ -1, 0, NVIF_CLASS_VMM_GM200}, gm200_vmm_new },
+ .kind = gm200_mmu_kind,
};
static const struct nvkm_mmu_func
@@ -47,12 +85,8 @@ gm200_mmu_fixed = {
.pgt_bits = 27 - 12,
.spg_shift = 12,
.lpg_shift = 17,
- .map_pgt = gf100_vm_map_pgt,
- .map = gf100_vm_map,
- .map_sg = gf100_vm_map_sg,
- .unmap = gf100_vm_unmap,
- .flush = gf100_vm_flush,
.vmm = {{ -1, -1, NVIF_CLASS_VMM_GM200}, gm200_vmm_new_fixed },
+ .kind = gm200_mmu_kind,
};
int
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gm20b.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gm20b.c
@@ -32,12 +32,8 @@ gm20b_mmu = {
.pgt_bits = 27 - 12,
.spg_shift = 12,
.lpg_shift = 17,
- .map_pgt = gf100_vm_map_pgt,
- .map = gf100_vm_map,
- .map_sg = gf100_vm_map_sg,
- .unmap = gf100_vm_unmap,
- .flush = gf100_vm_flush,
.vmm = {{ -1, 0, NVIF_CLASS_VMM_GM200}, gm20b_vmm_new },
+ .kind = gm200_mmu_kind,
};
static const struct nvkm_mmu_func
@@ -47,12 +43,8 @@ gm20b_mmu_fixed = {
.pgt_bits = 27 - 12,
.spg_shift = 12,
.lpg_shift = 17,
- .map_pgt = gf100_vm_map_pgt,
- .map = gf100_vm_map,
- .map_sg = gf100_vm_map_sg,
- .unmap = gf100_vm_unmap,
- .flush = gf100_vm_flush,
.vmm = {{ -1, -1, NVIF_CLASS_VMM_GM200}, gm20b_vmm_new_fixed },
+ .kind = gm200_mmu_kind,
};
int
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/priv.h
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/priv.h
@@ -54,6 +54,8 @@ void gf100_vm_unmap(struct nvkm_vma *, s
void gf100_vm_flush(struct nvkm_vm *);
const u8 *gf100_mmu_kind(struct nvkm_mmu *, int *count);
+const u8 *gm200_mmu_kind(struct nvkm_mmu *, int *);
+
struct nvkm_mmu_pt {
union {
struct nvkm_mmu_ptc *ptc;
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgm200.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgm200.c
@@ -24,16 +24,44 @@
#include <nvif/ifb00d.h>
#include <nvif/unpack.h>
+static void
+gm200_vmm_pgt_sparse(struct nvkm_vmm *vmm,
+ struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
+{
+ /* VALID_FALSE + VOL tells the MMU to treat the PTE as sparse. */
+ VMM_FO064(pt, vmm, ptei * 8, BIT_ULL(32) /* VOL. */, ptes);
+}
+
static const struct nvkm_vmm_desc_func
gm200_vmm_spt = {
+ .unmap = gf100_vmm_pgt_unmap,
+ .sparse = gm200_vmm_pgt_sparse,
+ .mem = gf100_vmm_pgt_mem,
+ .dma = gf100_vmm_pgt_dma,
+ .sgl = gf100_vmm_pgt_sgl,
};
static const struct nvkm_vmm_desc_func
gm200_vmm_lpt = {
+ .invalid = gk104_vmm_lpt_invalid,
+ .unmap = gf100_vmm_pgt_unmap,
+ .sparse = gm200_vmm_pgt_sparse,
+ .mem = gf100_vmm_pgt_mem,
};
+static void
+gm200_vmm_pgd_sparse(struct nvkm_vmm *vmm,
+ struct nvkm_mmu_pt *pt, u32 pdei, u32 pdes)
+{
+ /* VALID_FALSE + VOL_BIG tells the MMU to treat the PDE as sparse. */
+ VMM_FO064(pt, vmm, pdei * 8, BIT_ULL(35) /* VOL_BIG. */, pdes);
+}
+
static const struct nvkm_vmm_desc_func
gm200_vmm_pgd = {
+ .unmap = gf100_vmm_pgt_unmap,
+ .sparse = gm200_vmm_pgd_sparse,
+ .pde = gf100_vmm_pgd_pde,
};
const struct nvkm_vmm_desc
@@ -82,6 +110,9 @@ static const struct nvkm_vmm_func
gm200_vmm_17 = {
.join = gm200_vmm_join,
.part = gf100_vmm_part,
+ .aper = gf100_vmm_aper,
+ .valid = gf100_vmm_valid,
+ .flush = gf100_vmm_flush,
.page = {
{ 27, &gm200_vmm_desc_17_17[1], NVKM_VMM_PAGE_Sxxx },
{ 17, &gm200_vmm_desc_17_17[0], NVKM_VMM_PAGE_SVxC },
@@ -94,6 +125,9 @@ static const struct nvkm_vmm_func
gm200_vmm_16 = {
.join = gm200_vmm_join,
.part = gf100_vmm_part,
+ .aper = gf100_vmm_aper,
+ .valid = gf100_vmm_valid,
+ .flush = gf100_vmm_flush,
.page = {
{ 27, &gm200_vmm_desc_16_16[1], NVKM_VMM_PAGE_Sxxx },
{ 16, &gm200_vmm_desc_16_16[0], NVKM_VMM_PAGE_SVxC },
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgm20b.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgm20b.c
@@ -25,6 +25,9 @@ static const struct nvkm_vmm_func
gm20b_vmm_17 = {
.join = gm200_vmm_join,
.part = gf100_vmm_part,
+ .aper = gk20a_vmm_aper,
+ .valid = gf100_vmm_valid,
+ .flush = gf100_vmm_flush,
.page = {
{ 27, &gm200_vmm_desc_17_17[1], NVKM_VMM_PAGE_Sxxx },
{ 17, &gm200_vmm_desc_17_17[0], NVKM_VMM_PAGE_SxHC },
@@ -37,6 +40,9 @@ static const struct nvkm_vmm_func
gm20b_vmm_16 = {
.join = gm200_vmm_join,
.part = gf100_vmm_part,
+ .aper = gk20a_vmm_aper,
+ .valid = gf100_vmm_valid,
+ .flush = gf100_vmm_flush,
.page = {
{ 27, &gm200_vmm_desc_16_16[1], NVKM_VMM_PAGE_Sxxx },
{ 16, &gm200_vmm_desc_16_16[0], NVKM_VMM_PAGE_SxHC },