diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv84_crypt.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv84_crypt.c | 140 |
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 00000000000..ec18ae1c388 --- /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"); +} |