From: Ben Skeggs <bskeggs@redhat.com>
Date: Wed, 1 Nov 2017 03:56:19 +1000
Subject: drm/nouveau/mmu/gf100: implement new vmm backend
Git-commit: b77791da0ee009dcb1813d8b00919962b6a5f851
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.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/nouveau/include/nvif/if900d.h | 13 +
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/base.c | 15 +
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gf100.c | 12
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/priv.h | 1
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h | 12
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgf100.c | 258 +++++++++++++++++++++
6 files changed, 306 insertions(+), 5 deletions(-)
--- a/drivers/gpu/drm/nouveau/include/nvif/if900d.h
+++ b/drivers/gpu/drm/nouveau/include/nvif/if900d.h
@@ -5,4 +5,17 @@
struct gf100_vmm_vn {
/* nvif_vmm_vX ... */
};
+
+struct gf100_vmm_map_vn {
+ /* nvif_vmm_map_vX ... */
+};
+
+struct gf100_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/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/base.c
@@ -28,6 +28,7 @@
#include <subdev/fb.h>
#include <nvif/if500d.h>
+#include <nvif/if900d.h>
struct nvkm_mmu_ptp {
struct nvkm_mmu_pt *pt;
@@ -222,6 +223,7 @@ nvkm_vm_map_(const struct nvkm_vmm_page
{
union {
struct nv50_vmm_map_v0 nv50;
+ struct gf100_vmm_map_v0 gf100;
} args;
struct nvkm_vmm *vmm = vma->vm;
void *argv = NULL;
@@ -242,6 +244,19 @@ nvkm_vm_map_(const struct nvkm_vmm_page
argv = &args.nv50;
argc = sizeof(args.nv50);
break;
+ case NV_C0:
+ case NV_E0:
+ case GM100:
+ case GP100: {
+ args.gf100.version = 0;
+ args.gf100.vol = (nvkm_memory_target(map->memory) != NVKM_MEM_TARGET_VRAM);
+ args.gf100.ro = !(vma->access & NV_MEM_ACCESS_WO);
+ args.gf100.priv = !!(vma->access & NV_MEM_ACCESS_SYS);
+ args.gf100.kind = (mem->memtype & 0x0ff);
+ argv = &args.gf100;
+ argc = sizeof(args.gf100);
+ }
+ break;
default:
break;
}
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gf100.c
@@ -68,6 +68,12 @@ const u8 gf100_pte_storage_type_map[256]
0xfe, 0xfe, 0xfe, 0xfe, 0xff, 0xfd, 0xfe, 0xff
};
+const u8 *
+gf100_mmu_kind(struct nvkm_mmu *mmu, int *count)
+{
+ *count = ARRAY_SIZE(gf100_pte_storage_type_map);
+ return gf100_pte_storage_type_map;
+}
void
gf100_vm_map_pgt(struct nvkm_vmm *vmm, u32 index, struct nvkm_memory *pgt[2])
@@ -195,12 +201,8 @@ gf100_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, -1, NVIF_CLASS_VMM_GF100}, gf100_vmm_new },
+ .kind = gf100_mmu_kind,
};
int
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/priv.h
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/priv.h
@@ -52,6 +52,7 @@ void gf100_vm_map_sg(struct nvkm_vma *,
u32, u32, dma_addr_t *);
void gf100_vm_unmap(struct nvkm_vma *, struct nvkm_memory *, u32, u32);
void gf100_vm_flush(struct nvkm_vm *);
+const u8 *gf100_mmu_kind(struct nvkm_mmu *, int *count);
struct nvkm_mmu_pt {
union {
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h
@@ -70,7 +70,15 @@ struct nvkm_vmm_desc_func {
};
extern const struct nvkm_vmm_desc_func gf100_vmm_pgd;
+void gf100_vmm_pgd_pde(struct nvkm_vmm *, struct nvkm_vmm_pt *, u32);
extern const struct nvkm_vmm_desc_func gf100_vmm_pgt;
+void gf100_vmm_pgt_unmap(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32);
+void gf100_vmm_pgt_mem(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32,
+ struct nvkm_vmm_map *);
+void gf100_vmm_pgt_dma(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32,
+ struct nvkm_vmm_map *);
+void gf100_vmm_pgt_sgl(struct nvkm_vmm *, struct nvkm_mmu_pt *, u32, u32,
+ struct nvkm_vmm_map *);
struct nvkm_vmm_desc {
enum {
@@ -165,6 +173,10 @@ int gf100_vmm_new_(const struct nvkm_vmm
int gf100_vmm_join_(struct nvkm_vmm *, struct nvkm_memory *, u64 base);
int gf100_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
void gf100_vmm_part(struct nvkm_vmm *, struct nvkm_memory *);
+int gf100_vmm_aper(enum nvkm_memory_target);
+int gf100_vmm_valid(struct nvkm_vmm *, void *, u32, struct nvkm_vmm_map *);
+void gf100_vmm_flush_(struct nvkm_vmm *, int);
+void gf100_vmm_flush(struct nvkm_vmm *, int);
int gm200_vmm_new_(const struct nvkm_vmm_func *, const struct nvkm_vmm_func *,
struct nvkm_mmu *, u64, u64, void *, u32,
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgf100.c
@@ -22,13 +22,131 @@
#include "vmm.h"
#include <subdev/fb.h>
+#include <subdev/ltc.h>
+#include <subdev/timer.h>
+
+#include <nvif/if900d.h>
+#include <nvif/unpack.h>
+
+static inline void
+gf100_vmm_pgt_pte(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
+ u32 ptei, u32 ptes, struct nvkm_vmm_map *map, u64 addr)
+{
+ u64 base = (addr >> 8) | map->type;
+ u64 data = base;
+
+ if (map->ctag && !(map->next & (1ULL << 44))) {
+ while (ptes--) {
+ data = base | ((map->ctag >> 1) << 44);
+ if (!(map->ctag++ & 1))
+ data |= BIT_ULL(60);
+
+ VMM_WO064(pt, vmm, ptei++ * 8, data);
+ base += map->next;
+ }
+ } else {
+ map->type += ptes * map->ctag;
+
+ while (ptes--) {
+ VMM_WO064(pt, vmm, ptei++ * 8, data);
+ data += map->next;
+ }
+ }
+}
+
+void
+gf100_vmm_pgt_sgl(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
+ u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
+{
+ VMM_MAP_ITER_SGL(vmm, pt, ptei, ptes, map, gf100_vmm_pgt_pte);
+}
+
+void
+gf100_vmm_pgt_dma(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
+ u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
+{
+ if (map->page->shift == PAGE_SHIFT) {
+ VMM_SPAM(vmm, "DMAA %08x %08x PTE(s)", ptei, ptes);
+ nvkm_kmap(pt->memory);
+ while (ptes--) {
+ const u64 data = (*map->dma++ >> 8) | map->type;
+ VMM_WO064(pt, vmm, ptei++ * 8, data);
+ map->type += map->ctag;
+ }
+ nvkm_done(pt->memory);
+ return;
+ }
+
+ VMM_MAP_ITER_DMA(vmm, pt, ptei, ptes, map, gf100_vmm_pgt_pte);
+}
+
+void
+gf100_vmm_pgt_mem(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,
+ u32 ptei, u32 ptes, struct nvkm_vmm_map *map)
+{
+ VMM_MAP_ITER_MEM(vmm, pt, ptei, ptes, map, gf100_vmm_pgt_pte);
+}
+
+void
+gf100_vmm_pgt_unmap(struct nvkm_vmm *vmm,
+ struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)
+{
+ VMM_FO064(pt, vmm, ptei * 8, 0ULL, ptes);
+}
const struct nvkm_vmm_desc_func
gf100_vmm_pgt = {
+ .unmap = gf100_vmm_pgt_unmap,
+ .mem = gf100_vmm_pgt_mem,
+ .dma = gf100_vmm_pgt_dma,
+ .sgl = gf100_vmm_pgt_sgl,
};
+void
+gf100_vmm_pgd_pde(struct nvkm_vmm *vmm, struct nvkm_vmm_pt *pgd, u32 pdei)
+{
+ struct nvkm_vmm_pt *pgt = pgd->pde[pdei];
+ struct nvkm_mmu_pt *pd = pgd->pt[0];
+ struct nvkm_mmu_pt *pt;
+ u64 data = 0;
+
+ if ((pt = pgt->pt[0])) {
+ switch (nvkm_memory_target(pt->memory)) {
+ case NVKM_MEM_TARGET_VRAM: data |= 1ULL << 0; break;
+ case NVKM_MEM_TARGET_HOST: data |= 2ULL << 0;
+ data |= BIT_ULL(35); /* VOL */
+ break;
+ case NVKM_MEM_TARGET_NCOH: data |= 3ULL << 0; break;
+ default:
+ WARN_ON(1);
+ return;
+ }
+ data |= pt->addr >> 8;
+ }
+
+ if ((pt = pgt->pt[1])) {
+ switch (nvkm_memory_target(pt->memory)) {
+ case NVKM_MEM_TARGET_VRAM: data |= 1ULL << 32; break;
+ case NVKM_MEM_TARGET_HOST: data |= 2ULL << 32;
+ data |= BIT_ULL(34); /* VOL */
+ break;
+ case NVKM_MEM_TARGET_NCOH: data |= 3ULL << 32; break;
+ default:
+ WARN_ON(1);
+ return;
+ }
+ data |= pt->addr << 24;
+ }
+
+ nvkm_kmap(pd->memory);
+ VMM_WO064(pd, vmm, pdei * 8, data);
+ nvkm_done(pd->memory);
+}
+
const struct nvkm_vmm_desc_func
gf100_vmm_pgd = {
+ .unmap = gf100_vmm_pgt_unmap,
+ .pde = gf100_vmm_pgd_pde,
};
static const struct nvkm_vmm_desc
@@ -60,6 +178,140 @@ gf100_vmm_desc_16_16[] = {
};
void
+gf100_vmm_flush_(struct nvkm_vmm *vmm, int depth)
+{
+ struct nvkm_subdev *subdev = &vmm->mmu->subdev;
+ struct nvkm_device *device = subdev->device;
+ u32 type;
+
+ type = 0x00000001; /* PAGE_ALL */
+ if (atomic_read(&vmm->engref[NVKM_SUBDEV_BAR]))
+ type |= 0x00000004; /* HUB_ONLY */
+
+ mutex_lock(&subdev->mutex);
+ /* Looks like maybe a "free flush slots" counter, the
+ * faster you write to 0x100cbc to more it decreases.
+ */
+ nvkm_msec(device, 2000,
+ if (nvkm_rd32(device, 0x100c80) & 0x00ff0000)
+ break;
+ );
+
+ nvkm_wr32(device, 0x100cb8, vmm->pd->pt[0]->addr >> 8);
+ nvkm_wr32(device, 0x100cbc, 0x80000000 | type);
+
+ /* Wait for flush to be queued? */
+ nvkm_msec(device, 2000,
+ if (nvkm_rd32(device, 0x100c80) & 0x00008000)
+ break;
+ );
+ mutex_unlock(&subdev->mutex);
+}
+
+void
+gf100_vmm_flush(struct nvkm_vmm *vmm, int depth)
+{
+ gf100_vmm_flush_(vmm, 0);
+}
+
+int
+gf100_vmm_valid(struct nvkm_vmm *vmm, void *argv, u32 argc,
+ struct nvkm_vmm_map *map)
+{
+ const enum nvkm_memory_target target = nvkm_memory_target(map->memory);
+ const struct nvkm_vmm_page *page = map->page;
+ const bool gm20x = page->desc->func->sparse != NULL;
+ union {
+ struct gf100_vmm_map_vn vn;
+ struct gf100_vmm_map_v0 v0;
+ } *args = argv;
+ struct nvkm_device *device = vmm->mmu->subdev.device;
+ struct nvkm_memory *memory = map->memory;
+ u8 kind, priv, ro, vol;
+ int kindn, aper, ret = -ENOSYS;
+ const u8 *kindm;
+
+ map->next = (1 << page->shift) >> 8;
+ map->type = map->ctag = 0;
+
+ if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
+ vol = !!args->v0.vol;
+ ro = !!args->v0.ro;
+ priv = !!args->v0.priv;
+ kind = args->v0.kind;
+ } else
+ if (!(ret = nvif_unvers(ret, &argv, &argc, args->vn))) {
+ vol = target == NVKM_MEM_TARGET_HOST;
+ ro = 0;
+ priv = 0;
+ kind = 0x00;
+ } else {
+ VMM_DEBUG(vmm, "args");
+ return ret;
+ }
+
+ aper = vmm->func->aper(target);
+ if (WARN_ON(aper < 0))
+ return aper;
+
+ kindm = vmm->mmu->func->kind(vmm->mmu, &kindn);
+ if (kind >= kindn || kindm[kind] == 0xff) {
+ VMM_DEBUG(vmm, "kind %02x", kind);
+ return -EINVAL;
+ }
+
+ if (kindm[kind] != kind) {
+ u32 comp = (page->shift == 16 && !gm20x) ? 16 : 17;
+ u32 tags = ALIGN(nvkm_memory_size(memory), 1 << 17) >> comp;
+ if (aper != 0 || !(page->type & NVKM_VMM_PAGE_COMP)) {
+ VMM_DEBUG(vmm, "comp %d %02x", aper, page->type);
+ return -EINVAL;
+ }
+
+ ret = nvkm_memory_tags_get(memory, device, tags,
+ nvkm_ltc_tags_clear,
+ &map->tags);
+ if (ret) {
+ VMM_DEBUG(vmm, "comp %d", ret);
+ return ret;
+ }
+
+ if (map->tags->mn) {
+ u64 tags = map->tags->mn->offset + (map->offset >> 17);
+ if (page->shift == 17 || !gm20x) {
+ map->type |= tags << 44;
+ map->ctag |= 1ULL << 44;
+ map->next |= 1ULL << 44;
+ } else {
+ map->ctag |= tags << 1 | 1;
+ }
+ } else {
+ kind = kindm[kind];
+ }
+ }
+
+ map->type |= BIT(0);
+ map->type |= (u64)priv << 1;
+ map->type |= (u64) ro << 2;
+ map->type |= (u64) vol << 32;
+ map->type |= (u64)aper << 33;
+ map->type |= (u64)kind << 36;
+ return 0;
+}
+
+int
+gf100_vmm_aper(enum nvkm_memory_target target)
+{
+ switch (target) {
+ case NVKM_MEM_TARGET_VRAM: return 0;
+ case NVKM_MEM_TARGET_HOST: return 2;
+ case NVKM_MEM_TARGET_NCOH: return 3;
+ default:
+ return -EINVAL;
+ }
+}
+
+void
gf100_vmm_part(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
{
nvkm_fo64(inst, 0x0200, 0x00000000, 2);
@@ -99,6 +351,9 @@ static const struct nvkm_vmm_func
gf100_vmm_17 = {
.join = gf100_vmm_join,
.part = gf100_vmm_part,
+ .aper = gf100_vmm_aper,
+ .valid = gf100_vmm_valid,
+ .flush = gf100_vmm_flush,
.page = {
{ 17, &gf100_vmm_desc_17_17[0], NVKM_VMM_PAGE_xVxC },
{ 12, &gf100_vmm_desc_17_12[0], NVKM_VMM_PAGE_xVHx },
@@ -110,6 +365,9 @@ static const struct nvkm_vmm_func
gf100_vmm_16 = {
.join = gf100_vmm_join,
.part = gf100_vmm_part,
+ .aper = gf100_vmm_aper,
+ .valid = gf100_vmm_valid,
+ .flush = gf100_vmm_flush,
.page = {
{ 16, &gf100_vmm_desc_16_16[0], NVKM_VMM_PAGE_xVxC },
{ 12, &gf100_vmm_desc_16_12[0], NVKM_VMM_PAGE_xVHx },