1 files changed, 119 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/dma/usergv100.c b/drivers/gpu/drm/nouveau/nvkm/engine/dma/usergv100.c
new file mode 100644
index 000000000000..39eba9fc82be
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/dma/usergv100.c
@@ -0,0 +1,119 @@
+/*
+ * Copyright 2018 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.
+ */
+#define gv100_dmaobj(p) container_of((p), struct gv100_dmaobj, base)
+#include "user.h"
+
+#include <core/client.h>
+#include <core/gpuobj.h>
+#include <subdev/fb.h>
+
+#include <nvif/cl0002.h>
+#include <nvif/unpack.h>
+
+struct gv100_dmaobj {
+        struct nvkm_dmaobj base;
+        u32 flags0;
+};
+
+static int
+gv100_dmaobj_bind(struct nvkm_dmaobj *base, struct nvkm_gpuobj *parent,
+                  int align, struct nvkm_gpuobj **pgpuobj)
+{
+        struct gv100_dmaobj *dmaobj = gv100_dmaobj(base);
+        struct nvkm_device *device = dmaobj->base.dma->engine.subdev.device;
+        u64 start = dmaobj->base.start >> 8;
+        u64 limit = dmaobj->base.limit >> 8;
+        int ret;
+
+        ret = nvkm_gpuobj_new(device, 24, align, false, parent, pgpuobj);
+        if (ret == 0) {
+                nvkm_kmap(*pgpuobj);
+                nvkm_wo32(*pgpuobj, 0x00, dmaobj->flags0);
+                nvkm_wo32(*pgpuobj, 0x04, lower_32_bits(start));
+                nvkm_wo32(*pgpuobj, 0x08, upper_32_bits(start));
+                nvkm_wo32(*pgpuobj, 0x0c, lower_32_bits(limit));
+                nvkm_wo32(*pgpuobj, 0x10, upper_32_bits(limit));
+                nvkm_done(*pgpuobj);
+        }
+
+        return ret;
+}
+
+static const struct nvkm_dmaobj_func
+gv100_dmaobj_func = {
+        .bind = gv100_dmaobj_bind,
+};
+
+int
+gv100_dmaobj_new(struct nvkm_dma *dma, const struct nvkm_oclass *oclass,
+                 void *data, u32 size, struct nvkm_dmaobj **pdmaobj)
+{
+        union {
+                struct gf119_dma_v0 v0;
+        } *args;
+        struct nvkm_object *parent = oclass->parent;
+        struct gv100_dmaobj *dmaobj;
+        u32 kind, page;
+        int ret;
+
+        if (!(dmaobj = kzalloc(sizeof(*dmaobj), GFP_KERNEL)))
+                return -ENOMEM;
+        *pdmaobj = &dmaobj->base;
+
+        ret = nvkm_dmaobj_ctor(&gv100_dmaobj_func, dma, oclass,
+                               &data, &size, &dmaobj->base);
+        if (ret)
+                return ret;
+
+        ret  = -ENOSYS;
+        args = data;
+
+        nvif_ioctl(parent, "create gv100 dma size %d\n", size);
+        if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
+                nvif_ioctl(parent,
+                           "create gv100 dma vers %d page %d kind %02x\n",
+                           args->v0.version, args->v0.page, args->v0.kind);
+                kind = args->v0.kind != 0;
+                page = args->v0.page != 0;
+        } else
+        if (size == 0) {
+                kind = 0;
+                page = GF119_DMA_V0_PAGE_SP;
+        } else
+                return ret;
+
+        if (kind)
+                dmaobj->flags0 |= 0x00100000;
+        if (page)
+                dmaobj->flags0 |= 0x00000040;
+        dmaobj->flags0 |= 0x00000004; /* rw */
+
+        switch (dmaobj->base.target) {
+        case NV_MEM_TARGET_VRAM       : dmaobj->flags0 |= 0x00000001; break;
+        case NV_MEM_TARGET_PCI        : dmaobj->flags0 |= 0x00000002; break;
+        case NV_MEM_TARGET_PCI_NOSNOOP: dmaobj->flags0 |= 0x00000003; break;
+        default:
+                return -EINVAL;
+        }
+
+        return 0;
+}