drm/nouveau/mmu/gm200,gm20b: implement vmm on top of new base

Adds support for:
- Per-VMM selection of big page size.
- System-memory PDs.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/include/nvif/class.h

@@ -18,6 +18,7 @@
 #define NVIF_CLASS_VMM_NV04                          /* if000d.h */  0x8000000d
 #define NVIF_CLASS_VMM_NV50                          /* if500d.h */  0x8000500d
 #define NVIF_CLASS_VMM_GF100                         /* if900d.h */  0x8000900d
+#define NVIF_CLASS_VMM_GM200                         /* ifb00d.h */  0x8000b00d
 
 /* the below match nvidia-assigned (either in hw, or sw) class numbers */
 #define NV_NULL_CLASS                                                0x00000030

drivers/gpu/drm/nouveau/include/nvif/ifb00d.h

+#ifndef __NVIF_IFB00D_H__
+#define __NVIF_IFB00D_H__
+#include "if000c.h"
+
+struct gm200_vmm_vn {
+	/* nvif_vmm_vX ... */
+};
+
+struct gm200_vmm_v0 {
+	/* nvif_vmm_vX ... */
+	__u8  version;
+	__u8  bigpage;
+};
+#endif

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/Kbuild

@@ -20,3 +20,5 @@ nvkm-y += nvkm/subdev/mmu/vmmnv50.o
 nvkm-y += nvkm/subdev/mmu/vmmgf100.o
 nvkm-y += nvkm/subdev/mmu/vmmgk104.o
 nvkm-y += nvkm/subdev/mmu/vmmgk20a.o
+nvkm-y += nvkm/subdev/mmu/vmmgm200.o
+nvkm-y += nvkm/subdev/mmu/vmmgm20b.o

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gm200.c

@@ -19,7 +19,11 @@
  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  * OTHER DEALINGS IN THE SOFTWARE.
  */
-#include "priv.h"
+#include "vmm.h"
+
+#include <subdev/fb.h>
+
+#include <nvif/class.h>
 
 static const struct nvkm_mmu_func
 gm200_mmu = {
@@ -34,10 +38,29 @@ gm200_mmu = {
 	.map_sg = gf100_vm_map_sg,
 	.unmap = gf100_vm_unmap,
 	.flush = gf100_vm_flush,
+	.vmm = {{ -1,  0, NVIF_CLASS_VMM_GM200}, gm200_vmm_new },
+};
+
+static const struct nvkm_mmu_func
+gm200_mmu_fixed = {
+	.limit = (1ULL << 40),
+	.dma_bits = 40,
+	.pgt_bits  = 27 - 12,
+	.spg_shift = 12,
+	.lpg_shift = 17,
+	.create = gf100_vm_create,
+	.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 },
 };
 
 int
 gm200_mmu_new(struct nvkm_device *device, int index, struct nvkm_mmu **pmmu)
 {
+	if (device->fb->page)
+		return nvkm_mmu_new_(&gm200_mmu_fixed, device, index, pmmu);
 	return nvkm_mmu_new_(&gm200_mmu, device, index, pmmu);
 }

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/gm20b.c

@@ -19,7 +19,11 @@
  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  * OTHER DEALINGS IN THE SOFTWARE.
  */
-#include "priv.h"
+#include "vmm.h"
+
+#include <subdev/fb.h>
+
+#include <nvif/class.h>
 
 static const struct nvkm_mmu_func
 gm20b_mmu = {
@@ -34,10 +38,29 @@ gm20b_mmu = {
 	.map_sg = gf100_vm_map_sg,
 	.unmap = gf100_vm_unmap,
 	.flush = gf100_vm_flush,
+	.vmm = {{ -1,  0, NVIF_CLASS_VMM_GM200}, gm20b_vmm_new },
+};
+
+static const struct nvkm_mmu_func
+gm20b_mmu_fixed = {
+	.limit = (1ULL << 40),
+	.dma_bits = 40,
+	.pgt_bits  = 27 - 12,
+	.spg_shift = 12,
+	.lpg_shift = 17,
+	.create = gf100_vm_create,
+	.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 },
 };
 
 int
 gm20b_mmu_new(struct nvkm_device *device, int index, struct nvkm_mmu **pmmu)
 {
+	if (device->fb->page)
+		return nvkm_mmu_new_(&gm20b_mmu_fixed, device, index, pmmu);
 	return nvkm_mmu_new_(&gm20b_mmu, device, index, pmmu);
 }

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmm.h

@@ -73,6 +73,11 @@ extern const struct nvkm_vmm_desc gk104_vmm_desc_16_16[];
 extern const struct nvkm_vmm_desc gk104_vmm_desc_17_12[];
 extern const struct nvkm_vmm_desc gk104_vmm_desc_17_17[];
 
+extern const struct nvkm_vmm_desc gm200_vmm_desc_16_12[];
+extern const struct nvkm_vmm_desc gm200_vmm_desc_16_16[];
+extern const struct nvkm_vmm_desc gm200_vmm_desc_17_12[];
+extern const struct nvkm_vmm_desc gm200_vmm_desc_17_17[];
+
 struct nvkm_vmm_page {
 	u8 shift;
 	const struct nvkm_vmm_desc *desc;
@@ -126,6 +131,12 @@ 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 gm200_vmm_new_(const struct nvkm_vmm_func *, const struct nvkm_vmm_func *,
+		   struct nvkm_mmu *, u64, u64, void *, u32,
+		   struct lock_class_key *, const char *, struct nvkm_vmm **);
+int gm200_vmm_join_(struct nvkm_vmm *, struct nvkm_memory *, u64 base);
+int gm200_vmm_join(struct nvkm_vmm *, struct nvkm_memory *);
+
 int nv04_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
 		 struct lock_class_key *, const char *, struct nvkm_vmm **);
 int nv41_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
@@ -142,4 +153,16 @@ int gk104_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
 		  struct lock_class_key *, const char *, struct nvkm_vmm **);
 int gk20a_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
 		  struct lock_class_key *, const char *, struct nvkm_vmm **);
+int gm200_vmm_new_fixed(struct nvkm_mmu *, u64, u64, void *, u32,
+			struct lock_class_key *, const char *,
+			struct nvkm_vmm **);
+int gm200_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
+		  struct lock_class_key *, const char *,
+		  struct nvkm_vmm **);
+int gm20b_vmm_new_fixed(struct nvkm_mmu *, u64, u64, void *, u32,
+			struct lock_class_key *, const char *,
+			struct nvkm_vmm **);
+int gm20b_vmm_new(struct nvkm_mmu *, u64, u64, void *, u32,
+		  struct lock_class_key *, const char *,
+		  struct nvkm_vmm **);
 #endif

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgm200.c

+/*
+ * 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 "vmm.h"
+
+#include <nvif/ifb00d.h>
+#include <nvif/unpack.h>
+
+static const struct nvkm_vmm_desc_func
+gm200_vmm_spt = {
+};
+
+static const struct nvkm_vmm_desc_func
+gm200_vmm_lpt = {
+};
+
+static const struct nvkm_vmm_desc_func
+gm200_vmm_pgd = {
+};
+
+const struct nvkm_vmm_desc
+gm200_vmm_desc_17_12[] = {
+	{ SPT, 15, 8, 0x1000, &gm200_vmm_spt },
+	{ PGD, 13, 8, 0x1000, &gm200_vmm_pgd },
+	{}
+};
+
+const struct nvkm_vmm_desc
+gm200_vmm_desc_17_17[] = {
+	{ LPT, 10, 8, 0x1000, &gm200_vmm_lpt },
+	{ PGD, 13, 8, 0x1000, &gm200_vmm_pgd },
+	{}
+};
+
+const struct nvkm_vmm_desc
+gm200_vmm_desc_16_12[] = {
+	{ SPT, 14, 8, 0x1000, &gm200_vmm_spt },
+	{ PGD, 14, 8, 0x1000, &gm200_vmm_pgd },
+	{}
+};
+
+const struct nvkm_vmm_desc
+gm200_vmm_desc_16_16[] = {
+	{ LPT, 10, 8, 0x1000, &gm200_vmm_lpt },
+	{ PGD, 14, 8, 0x1000, &gm200_vmm_pgd },
+	{}
+};
+
+int
+gm200_vmm_join_(struct nvkm_vmm *vmm, struct nvkm_memory *inst, u64 base)
+{
+	if (vmm->func->page[1].shift == 16)
+		base |= BIT_ULL(11);
+	return gf100_vmm_join_(vmm, inst, base);
+}
+
+int
+gm200_vmm_join(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
+{
+	return gm200_vmm_join_(vmm, inst, 0);
+}
+
+static const struct nvkm_vmm_func
+gm200_vmm_17 = {
+	.join = gm200_vmm_join,
+	.part = gf100_vmm_part,
+	.page = {
+		{ 27, &gm200_vmm_desc_17_17[1], NVKM_VMM_PAGE_Sxxx },
+		{ 17, &gm200_vmm_desc_17_17[0], NVKM_VMM_PAGE_SVxC },
+		{ 12, &gm200_vmm_desc_17_12[0], NVKM_VMM_PAGE_SVHx },
+		{}
+	}
+};
+
+static const struct nvkm_vmm_func
+gm200_vmm_16 = {
+	.join = gm200_vmm_join,
+	.part = gf100_vmm_part,
+	.page = {
+		{ 27, &gm200_vmm_desc_16_16[1], NVKM_VMM_PAGE_Sxxx },
+		{ 16, &gm200_vmm_desc_16_16[0], NVKM_VMM_PAGE_SVxC },
+		{ 12, &gm200_vmm_desc_16_12[0], NVKM_VMM_PAGE_SVHx },
+		{}
+	}
+};
+
+int
+gm200_vmm_new_(const struct nvkm_vmm_func *func_16,
+	       const struct nvkm_vmm_func *func_17,
+	       struct nvkm_mmu *mmu, u64 addr, u64 size, void *argv, u32 argc,
+	       struct lock_class_key *key, const char *name,
+	       struct nvkm_vmm **pvmm)
+{
+	const struct nvkm_vmm_func *func;
+	union {
+		struct gm200_vmm_vn vn;
+		struct gm200_vmm_v0 v0;
+	} *args = argv;
+	int ret = -ENOSYS;
+
+	if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
+		switch (args->v0.bigpage) {
+		case 16: func = func_16; break;
+		case 17: func = func_17; break;
+		default:
+			return -EINVAL;
+		}
+	} else
+	if (!(ret = nvif_unvers(ret, &argv, &argc, args->vn))) {
+		func = func_17;
+	} else
+		return ret;
+
+	return nvkm_vmm_new_(func, mmu, 0, addr, size, key, name, pvmm);
+}
+
+int
+gm200_vmm_new(struct nvkm_mmu *mmu, u64 addr, u64 size, void *argv, u32 argc,
+	      struct lock_class_key *key, const char *name,
+	      struct nvkm_vmm **pvmm)
+{
+	return gm200_vmm_new_(&gm200_vmm_16, &gm200_vmm_17, mmu, addr,
+			      size, argv, argc, key, name, pvmm);
+}
+
+int
+gm200_vmm_new_fixed(struct nvkm_mmu *mmu, u64 addr, u64 size,
+		    void *argv, u32 argc, struct lock_class_key *key,
+		    const char *name, struct nvkm_vmm **pvmm)
+{
+	return gf100_vmm_new_(&gm200_vmm_16, &gm200_vmm_17, mmu, addr,
+			      size, argv, argc, key, name, pvmm);
+}

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgm20b.c

+/*
+ * 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 "vmm.h"
+
+static const struct nvkm_vmm_func
+gm20b_vmm_17 = {
+	.join = gm200_vmm_join,
+	.part = gf100_vmm_part,
+	.page = {
+		{ 27, &gm200_vmm_desc_17_17[1], NVKM_VMM_PAGE_Sxxx },
+		{ 17, &gm200_vmm_desc_17_17[0], NVKM_VMM_PAGE_SxHC },
+		{ 12, &gm200_vmm_desc_17_12[0], NVKM_VMM_PAGE_SxHx },
+		{}
+	}
+};
+
+static const struct nvkm_vmm_func
+gm20b_vmm_16 = {
+	.join = gm200_vmm_join,
+	.part = gf100_vmm_part,
+	.page = {
+		{ 27, &gm200_vmm_desc_16_16[1], NVKM_VMM_PAGE_Sxxx },
+		{ 16, &gm200_vmm_desc_16_16[0], NVKM_VMM_PAGE_SxHC },
+		{ 12, &gm200_vmm_desc_16_12[0], NVKM_VMM_PAGE_SxHx },
+		{}
+	}
+};
+
+int
+gm20b_vmm_new(struct nvkm_mmu *mmu, u64 addr, u64 size, void *argv, u32 argc,
+	      struct lock_class_key *key, const char *name,
+	      struct nvkm_vmm **pvmm)
+{
+	return gm200_vmm_new_(&gm20b_vmm_16, &gm20b_vmm_17, mmu, addr,
+			      size, argv, argc, key, name, pvmm);
+}
+
+int
+gm20b_vmm_new_fixed(struct nvkm_mmu *mmu, u64 addr, u64 size,
+		    void *argv, u32 argc, struct lock_class_key *key,
+		    const char *name, struct nvkm_vmm **pvmm)
+{
+	return gf100_vmm_new_(&gm20b_vmm_16, &gm20b_vmm_17, mmu, addr,
+			      size, argv, argc, key, name, pvmm);
+}