drm/nouveau/mmu/nv50,g84: implement vmm on top of new base

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

1 files changed, 94 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv50.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv50.c
new file mode 100644
index 000000000000..db27381b67c6
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv50.c
@@ -0,0 +1,94 @@
+/*
+ * 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/if500d.h>
+#include <nvif/unpack.h>
+
+static const struct nvkm_vmm_desc_func
+nv50_vmm_pgt = {
+};
+
+static const struct nvkm_vmm_desc_func
+nv50_vmm_pgd = {
+};
+
+static const struct nvkm_vmm_desc
+nv50_vmm_desc_12[] = {
+	{ PGT, 17, 8, 0x1000, &nv50_vmm_pgt },
+	{ PGD, 11, 0, 0x0000, &nv50_vmm_pgd },
+	{}
+};
+
+static const struct nvkm_vmm_desc
+nv50_vmm_desc_16[] = {
+	{ PGT, 13, 8, 0x1000, &nv50_vmm_pgt },
+	{ PGD, 11, 0, 0x0000, &nv50_vmm_pgd },
+	{}
+};
+
+static void
+nv50_vmm_part(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
+{
+	struct nvkm_vmm_join *join;
+
+	list_for_each_entry(join, &vmm->join, head) {
+		if (join->inst == inst) {
+			list_del(&join->head);
+			kfree(join);
+			break;
+		}
+	}
+}
+
+static int
+nv50_vmm_join(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
+{
+	struct nvkm_vmm_join *join;
+
+	if (!(join = kmalloc(sizeof(*join), GFP_KERNEL)))
+		return -ENOMEM;
+	join->inst = inst;
+	list_add_tail(&join->head, &vmm->join);
+	return 0;
+}
+
+static const struct nvkm_vmm_func
+nv50_vmm = {
+	.join = nv50_vmm_join,
+	.part = nv50_vmm_part,
+	.page_block = 1 << 29,
+	.page = {
+		{ 16, &nv50_vmm_desc_16[0], NVKM_VMM_PAGE_xVxC },
+		{ 12, &nv50_vmm_desc_12[0], NVKM_VMM_PAGE_xVHx },
+		{}
+	}
+};
+
+int
+nv50_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_(&nv50_vmm, mmu, 0, addr, size,
+			     argv, argc, key, name, pvmm);
+}