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path: root/drivers/gpu/drm/nouveau/nvkm/engine/dma/usernv04.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/dma/usernv04.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/engine/dma/usernv04.c133
1 files changed, 133 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/dma/usernv04.c b/drivers/gpu/drm/nouveau/nvkm/engine/dma/usernv04.c
new file mode 100644
index 000000000000..c95942ef8216
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/dma/usernv04.c
@@ -0,0 +1,133 @@
+/*
+ * Copyright 2012 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.
+ *
+ * Authors: Ben Skeggs
+ */
+#define nv04_dmaobj(p) container_of((p), struct nv04_dmaobj, base)
+#include "user.h"
+
+#include <core/gpuobj.h>
+#include <subdev/fb.h>
+#include <subdev/mmu/nv04.h>
+
+#include <nvif/class.h>
+
+struct nv04_dmaobj {
+ struct nvkm_dmaobj base;
+ bool clone;
+ u32 flags0;
+ u32 flags2;
+};
+
+static int
+nv04_dmaobj_bind(struct nvkm_dmaobj *base, struct nvkm_gpuobj *parent,
+ int align, struct nvkm_gpuobj **pgpuobj)
+{
+ struct nv04_dmaobj *dmaobj = nv04_dmaobj(base);
+ struct nvkm_device *device = dmaobj->base.dma->engine.subdev.device;
+ u64 offset = dmaobj->base.start & 0xfffff000;
+ u64 adjust = dmaobj->base.start & 0x00000fff;
+ u32 length = dmaobj->base.limit - dmaobj->base.start;
+ int ret;
+
+ if (dmaobj->clone) {
+ struct nv04_mmu *mmu = nv04_mmu(device->mmu);
+ struct nvkm_memory *pgt = mmu->vm->pgt[0].mem[0];
+ if (!dmaobj->base.start)
+ return nvkm_gpuobj_wrap(pgt, pgpuobj);
+ nvkm_kmap(pgt);
+ offset = nvkm_ro32(pgt, 8 + (offset >> 10));
+ offset &= 0xfffff000;
+ nvkm_done(pgt);
+ }
+
+ ret = nvkm_gpuobj_new(device, 16, align, false, parent, pgpuobj);
+ if (ret == 0) {
+ nvkm_kmap(*pgpuobj);
+ nvkm_wo32(*pgpuobj, 0x00, dmaobj->flags0 | (adjust << 20));
+ nvkm_wo32(*pgpuobj, 0x04, length);
+ nvkm_wo32(*pgpuobj, 0x08, dmaobj->flags2 | offset);
+ nvkm_wo32(*pgpuobj, 0x0c, dmaobj->flags2 | offset);
+ nvkm_done(*pgpuobj);
+ }
+
+ return ret;
+}
+
+static const struct nvkm_dmaobj_func
+nv04_dmaobj_func = {
+ .bind = nv04_dmaobj_bind,
+};
+
+int
+nv04_dmaobj_new(struct nvkm_dma *dma, const struct nvkm_oclass *oclass,
+ void *data, u32 size, struct nvkm_dmaobj **pdmaobj)
+{
+ struct nvkm_device *device = dma->engine.subdev.device;
+ struct nv04_dmaobj *dmaobj;
+ int ret;
+
+ if (!(dmaobj = kzalloc(sizeof(*dmaobj), GFP_KERNEL)))
+ return -ENOMEM;
+ *pdmaobj = &dmaobj->base;
+
+ ret = nvkm_dmaobj_ctor(&nv04_dmaobj_func, dma, oclass,
+ &data, &size, &dmaobj->base);
+ if (ret)
+ return ret;
+
+ if (dmaobj->base.target == NV_MEM_TARGET_VM) {
+ if (device->mmu->func == &nv04_mmu)
+ dmaobj->clone = true;
+ dmaobj->base.target = NV_MEM_TARGET_PCI;
+ dmaobj->base.access = NV_MEM_ACCESS_RW;
+ }
+
+ dmaobj->flags0 = oclass->base.oclass;
+ switch (dmaobj->base.target) {
+ case NV_MEM_TARGET_VRAM:
+ dmaobj->flags0 |= 0x00003000;
+ break;
+ case NV_MEM_TARGET_PCI:
+ dmaobj->flags0 |= 0x00023000;
+ break;
+ case NV_MEM_TARGET_PCI_NOSNOOP:
+ dmaobj->flags0 |= 0x00033000;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (dmaobj->base.access) {
+ case NV_MEM_ACCESS_RO:
+ dmaobj->flags0 |= 0x00004000;
+ break;
+ case NV_MEM_ACCESS_WO:
+ dmaobj->flags0 |= 0x00008000;
+ case NV_MEM_ACCESS_RW:
+ dmaobj->flags2 |= 0x00000002;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}