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path: root/drivers/gpu/drm/nouveau/nvif/mmu.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nvif/mmu.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvif/mmu.c117
1 files changed, 117 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvif/mmu.c b/drivers/gpu/drm/nouveau/nvif/mmu.c
new file mode 100644
index 000000000000..15d0dcbf7ab4
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvif/mmu.c
@@ -0,0 +1,117 @@
+/*
+ * 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 <nvif/mmu.h>
+
+#include <nvif/class.h>
+#include <nvif/if0008.h>
+
+void
+nvif_mmu_fini(struct nvif_mmu *mmu)
+{
+ kfree(mmu->kind);
+ kfree(mmu->type);
+ kfree(mmu->heap);
+ nvif_object_fini(&mmu->object);
+}
+
+int
+nvif_mmu_init(struct nvif_object *parent, s32 oclass, struct nvif_mmu *mmu)
+{
+ struct nvif_mmu_v0 args;
+ int ret, i;
+
+ args.version = 0;
+ mmu->heap = NULL;
+ mmu->type = NULL;
+ mmu->kind = NULL;
+
+ ret = nvif_object_init(parent, 0, oclass, &args, sizeof(args),
+ &mmu->object);
+ if (ret)
+ goto done;
+
+ mmu->dmabits = args.dmabits;
+ mmu->heap_nr = args.heap_nr;
+ mmu->type_nr = args.type_nr;
+ mmu->kind_nr = args.kind_nr;
+
+ mmu->heap = kmalloc(sizeof(*mmu->heap) * mmu->heap_nr, GFP_KERNEL);
+ mmu->type = kmalloc(sizeof(*mmu->type) * mmu->type_nr, GFP_KERNEL);
+ if (ret = -ENOMEM, !mmu->heap || !mmu->type)
+ goto done;
+
+ mmu->kind = kmalloc(sizeof(*mmu->kind) * mmu->kind_nr, GFP_KERNEL);
+ if (!mmu->kind && mmu->kind_nr)
+ goto done;
+
+ for (i = 0; i < mmu->heap_nr; i++) {
+ struct nvif_mmu_heap_v0 args = { .index = i };
+
+ ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_HEAP,
+ &args, sizeof(args));
+ if (ret)
+ goto done;
+
+ mmu->heap[i].size = args.size;
+ }
+
+ for (i = 0; i < mmu->type_nr; i++) {
+ struct nvif_mmu_type_v0 args = { .index = i };
+
+ ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_TYPE,
+ &args, sizeof(args));
+ if (ret)
+ goto done;
+
+ mmu->type[i].type = 0;
+ if (args.vram) mmu->type[i].type |= NVIF_MEM_VRAM;
+ if (args.host) mmu->type[i].type |= NVIF_MEM_HOST;
+ if (args.comp) mmu->type[i].type |= NVIF_MEM_COMP;
+ if (args.disp) mmu->type[i].type |= NVIF_MEM_DISP;
+ if (args.kind ) mmu->type[i].type |= NVIF_MEM_KIND;
+ if (args.mappable) mmu->type[i].type |= NVIF_MEM_MAPPABLE;
+ if (args.coherent) mmu->type[i].type |= NVIF_MEM_COHERENT;
+ if (args.uncached) mmu->type[i].type |= NVIF_MEM_UNCACHED;
+ mmu->type[i].heap = args.heap;
+ }
+
+ if (mmu->kind_nr) {
+ struct nvif_mmu_kind_v0 *kind;
+ u32 argc = sizeof(*kind) + sizeof(*kind->data) * mmu->kind_nr;
+
+ if (ret = -ENOMEM, !(kind = kmalloc(argc, GFP_KERNEL)))
+ goto done;
+ kind->version = 0;
+ kind->count = mmu->kind_nr;
+
+ ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_KIND,
+ kind, argc);
+ if (ret == 0)
+ memcpy(mmu->kind, kind->data, kind->count);
+ kfree(kind);
+ }
+
+done:
+ if (ret)
+ nvif_mmu_fini(mmu);
+ return ret;
+}