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/*
* 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");
}
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