summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/nouveau/nvkm/engine/dma/usernv50.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/dma/usernv50.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/engine/dma/usernv50.c157
1 files changed, 157 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/dma/usernv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/dma/usernv50.c
new file mode 100644
index 000000000..6a85b5dea
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/dma/usernv50.c
@@ -0,0 +1,157 @@
+/*
+ * 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 nv50_dmaobj(p) container_of((p), struct nv50_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 nv50_dmaobj {
+ struct nvkm_dmaobj base;
+ u32 flags0;
+ u32 flags5;
+};
+
+static int
+nv50_dmaobj_bind(struct nvkm_dmaobj *base, struct nvkm_gpuobj *parent,
+ int align, struct nvkm_gpuobj **pgpuobj)
+{
+ struct nv50_dmaobj *dmaobj = nv50_dmaobj(base);
+ struct nvkm_device *device = dmaobj->base.dma->engine.subdev.device;
+ 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(dmaobj->base.limit));
+ nvkm_wo32(*pgpuobj, 0x08, lower_32_bits(dmaobj->base.start));
+ nvkm_wo32(*pgpuobj, 0x0c, upper_32_bits(dmaobj->base.limit) << 24 |
+ upper_32_bits(dmaobj->base.start));
+ nvkm_wo32(*pgpuobj, 0x10, 0x00000000);
+ nvkm_wo32(*pgpuobj, 0x14, dmaobj->flags5);
+ nvkm_done(*pgpuobj);
+ }
+
+ return ret;
+}
+
+static const struct nvkm_dmaobj_func
+nv50_dmaobj_func = {
+ .bind = nv50_dmaobj_bind,
+};
+
+int
+nv50_dmaobj_new(struct nvkm_dma *dma, const struct nvkm_oclass *oclass,
+ void *data, u32 size, struct nvkm_dmaobj **pdmaobj)
+{
+ union {
+ struct nv50_dma_v0 v0;
+ } *args;
+ struct nvkm_object *parent = oclass->parent;
+ struct nv50_dmaobj *dmaobj;
+ u32 user, part, comp, kind;
+ int ret;
+
+ if (!(dmaobj = kzalloc(sizeof(*dmaobj), GFP_KERNEL)))
+ return -ENOMEM;
+ *pdmaobj = &dmaobj->base;
+
+ ret = nvkm_dmaobj_ctor(&nv50_dmaobj_func, dma, oclass,
+ &data, &size, &dmaobj->base);
+ if (ret)
+ return ret;
+
+ ret = -ENOSYS;
+ args = data;
+
+ nvif_ioctl(parent, "create nv50 dma size %d\n", size);
+ if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
+ nvif_ioctl(parent, "create nv50 dma vers %d priv %d part %d "
+ "comp %d kind %02x\n", args->v0.version,
+ args->v0.priv, args->v0.part, args->v0.comp,
+ args->v0.kind);
+ user = args->v0.priv;
+ part = args->v0.part;
+ comp = args->v0.comp;
+ kind = args->v0.kind;
+ } else
+ if (size == 0) {
+ if (dmaobj->base.target != NV_MEM_TARGET_VM) {
+ user = NV50_DMA_V0_PRIV_US;
+ part = NV50_DMA_V0_PART_256;
+ comp = NV50_DMA_V0_COMP_NONE;
+ kind = NV50_DMA_V0_KIND_PITCH;
+ } else {
+ user = NV50_DMA_V0_PRIV_VM;
+ part = NV50_DMA_V0_PART_VM;
+ comp = NV50_DMA_V0_COMP_VM;
+ kind = NV50_DMA_V0_KIND_VM;
+ }
+ } else
+ return ret;
+
+ if (user > 2 || part > 2 || comp > 3 || kind > 0x7f)
+ return -EINVAL;
+ dmaobj->flags0 = (comp << 29) | (kind << 22) | (user << 20) |
+ oclass->base.oclass;
+ dmaobj->flags5 = (part << 16);
+
+ switch (dmaobj->base.target) {
+ case NV_MEM_TARGET_VM:
+ dmaobj->flags0 |= 0x00000000;
+ break;
+ case NV_MEM_TARGET_VRAM:
+ dmaobj->flags0 |= 0x00010000;
+ break;
+ case NV_MEM_TARGET_PCI:
+ dmaobj->flags0 |= 0x00020000;
+ break;
+ case NV_MEM_TARGET_PCI_NOSNOOP:
+ dmaobj->flags0 |= 0x00030000;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (dmaobj->base.access) {
+ case NV_MEM_ACCESS_VM:
+ break;
+ case NV_MEM_ACCESS_RO:
+ dmaobj->flags0 |= 0x00040000;
+ break;
+ case NV_MEM_ACCESS_WO:
+ case NV_MEM_ACCESS_RW:
+ dmaobj->flags0 |= 0x00080000;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}