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Diffstat (limited to 'drivers/gpu/drm/nouveau/nv84_crypt.c')
-rw-r--r--drivers/gpu/drm/nouveau/nv84_crypt.c140
1 files changed, 140 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv84_crypt.c b/drivers/gpu/drm/nouveau/nv84_crypt.c
new file mode 100644
index 000000000000..ec18ae1c3886
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nv84_crypt.c
@@ -0,0 +1,140 @@
+/*
+ * Copyright 2010 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
+ */
+
+#include "drmP.h"
+#include "nouveau_drv.h"
+#include "nouveau_util.h"
+#include "nouveau_vm.h"
+
+static void nv84_crypt_isr(struct drm_device *);
+
+int
+nv84_crypt_create_context(struct nouveau_channel *chan)
+{
+ struct drm_device *dev = chan->dev;
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_gpuobj *ramin = chan->ramin;
+ int ret;
+
+ NV_DEBUG(dev, "ch%d\n", chan->id);
+
+ ret = nouveau_gpuobj_new(dev, chan, 256, 0,
+ NVOBJ_FLAG_ZERO_ALLOC | NVOBJ_FLAG_ZERO_FREE,
+ &chan->crypt_ctx);
+ if (ret)
+ return ret;
+
+ nv_wo32(ramin, 0xa0, 0x00190000);
+ nv_wo32(ramin, 0xa4, chan->crypt_ctx->vinst + 0xff);
+ nv_wo32(ramin, 0xa8, chan->crypt_ctx->vinst);
+ nv_wo32(ramin, 0xac, 0);
+ nv_wo32(ramin, 0xb0, 0);
+ nv_wo32(ramin, 0xb4, 0);
+
+ dev_priv->engine.instmem.flush(dev);
+ atomic_inc(&chan->vm->pcrypt_refs);
+ return 0;
+}
+
+void
+nv84_crypt_destroy_context(struct nouveau_channel *chan)
+{
+ struct drm_device *dev = chan->dev;
+ u32 inst;
+
+ if (!chan->crypt_ctx)
+ return;
+
+ inst = (chan->ramin->vinst >> 12);
+ inst |= 0x80000000;
+
+ /* mark context as invalid if still on the hardware, not
+ * doing this causes issues the next time PCRYPT is used,
+ * unsurprisingly :)
+ */
+ nv_wr32(dev, 0x10200c, 0x00000000);
+ if (nv_rd32(dev, 0x102188) == inst)
+ nv_mask(dev, 0x102188, 0x80000000, 0x00000000);
+ if (nv_rd32(dev, 0x10218c) == inst)
+ nv_mask(dev, 0x10218c, 0x80000000, 0x00000000);
+ nv_wr32(dev, 0x10200c, 0x00000010);
+
+ nouveau_gpuobj_ref(NULL, &chan->crypt_ctx);
+ atomic_dec(&chan->vm->pcrypt_refs);
+}
+
+void
+nv84_crypt_tlb_flush(struct drm_device *dev)
+{
+ nv50_vm_flush_engine(dev, 0x0a);
+}
+
+int
+nv84_crypt_init(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_crypt_engine *pcrypt = &dev_priv->engine.crypt;
+
+ if (!pcrypt->registered) {
+ NVOBJ_CLASS(dev, 0x74c1, CRYPT);
+ pcrypt->registered = true;
+ }
+
+ nv_mask(dev, 0x000200, 0x00004000, 0x00000000);
+ nv_mask(dev, 0x000200, 0x00004000, 0x00004000);
+
+ nouveau_irq_register(dev, 14, nv84_crypt_isr);
+ nv_wr32(dev, 0x102130, 0xffffffff);
+ nv_wr32(dev, 0x102140, 0xffffffbf);
+
+ nv_wr32(dev, 0x10200c, 0x00000010);
+ return 0;
+}
+
+void
+nv84_crypt_fini(struct drm_device *dev)
+{
+ nv_wr32(dev, 0x102140, 0x00000000);
+ nouveau_irq_unregister(dev, 14);
+}
+
+static void
+nv84_crypt_isr(struct drm_device *dev)
+{
+ u32 stat = nv_rd32(dev, 0x102130);
+ u32 mthd = nv_rd32(dev, 0x102190);
+ u32 data = nv_rd32(dev, 0x102194);
+ u32 inst = nv_rd32(dev, 0x102188) & 0x7fffffff;
+ int show = nouveau_ratelimit();
+
+ if (show) {
+ NV_INFO(dev, "PCRYPT_INTR: 0x%08x 0x%08x 0x%08x 0x%08x\n",
+ stat, mthd, data, inst);
+ }
+
+ nv_wr32(dev, 0x102130, stat);
+ nv_wr32(dev, 0x10200c, 0x10);
+
+ nv50_fb_vm_trap(dev, show, "PCRYPT");
+}