drm/nouveau/mmu/gp100,gp10b: implement vmm on top of new base

Adds support for:
- Selection of old/new-style page table layout (GP100MmuLayout=0/1).
- System-memory PDs.

New layout disabled by default for the moment, as we don't have a
backend that can handle it yet.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 89 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgp100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgp100.c
new file mode 100644
index 000000000000..68f67812aecc
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgp100.c
@@ -0,0 +1,89 @@
+/*
+ * 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_desc_func
+gp100_vmm_desc_spt = {
+};
+
+static const struct nvkm_vmm_desc_func
+gp100_vmm_desc_lpt = {
+};
+
+static const struct nvkm_vmm_desc_func
+gp100_vmm_desc_pd0 = {
+};
+
+static const struct nvkm_vmm_desc_func
+gp100_vmm_desc_pd1 = {
+};
+
+const struct nvkm_vmm_desc
+gp100_vmm_desc_16[] = {
+	{ LPT, 5,  8, 0x0100, &gp100_vmm_desc_lpt },
+	{ PGD, 8, 16, 0x1000, &gp100_vmm_desc_pd0 },
+	{ PGD, 9,  8, 0x1000, &gp100_vmm_desc_pd1 },
+	{ PGD, 9,  8, 0x1000, &gp100_vmm_desc_pd1 },
+	{ PGD, 2,  8, 0x1000, &gp100_vmm_desc_pd1 },
+	{}
+};
+
+const struct nvkm_vmm_desc
+gp100_vmm_desc_12[] = {
+	{ SPT, 9,  8, 0x1000, &gp100_vmm_desc_spt },
+	{ PGD, 8, 16, 0x1000, &gp100_vmm_desc_pd0 },
+	{ PGD, 9,  8, 0x1000, &gp100_vmm_desc_pd1 },
+	{ PGD, 9,  8, 0x1000, &gp100_vmm_desc_pd1 },
+	{ PGD, 2,  8, 0x1000, &gp100_vmm_desc_pd1 },
+	{}
+};
+
+int
+gp100_vmm_join(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
+{
+	const u64 base = BIT_ULL(10) /* VER2 */ | BIT_ULL(11); /* 64KiB */
+	return gf100_vmm_join_(vmm, inst, base);
+}
+
+static const struct nvkm_vmm_func
+gp100_vmm = {
+	.join = gp100_vmm_join,
+	.part = gf100_vmm_part,
+	.page = {
+		{ 47, &gp100_vmm_desc_16[4], NVKM_VMM_PAGE_Sxxx },
+		{ 38, &gp100_vmm_desc_16[3], NVKM_VMM_PAGE_Sxxx },
+		{ 29, &gp100_vmm_desc_16[2], NVKM_VMM_PAGE_Sxxx },
+		{ 21, &gp100_vmm_desc_16[1], NVKM_VMM_PAGE_SVxC },
+		{ 16, &gp100_vmm_desc_16[0], NVKM_VMM_PAGE_SVxC },
+		{ 12, &gp100_vmm_desc_12[0], NVKM_VMM_PAGE_SVHx },
+		{}
+	}
+};
+
+int
+gp100_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 nv04_vmm_new_(&gp100_vmm, mmu, 0, addr, size,
+			     argv, argc, key, name, pvmm);
+}