diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv84_crypt.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv84_crypt.c | 193 |
1 files changed, 193 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 00000000..edece9c6 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nv84_crypt.c @@ -0,0 +1,193 @@ +/* + * 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" +#include "nouveau_ramht.h" + +struct nv84_crypt_engine { + struct nouveau_exec_engine base; +}; + +static int +nv84_crypt_context_new(struct nouveau_channel *chan, int engine) +{ + struct drm_device *dev = chan->dev; + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_gpuobj *ramin = chan->ramin; + struct nouveau_gpuobj *ctx; + 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, &ctx); + if (ret) + return ret; + + nv_wo32(ramin, 0xa0, 0x00190000); + nv_wo32(ramin, 0xa4, ctx->vinst + ctx->size - 1); + nv_wo32(ramin, 0xa8, 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->engref[engine]); + chan->engctx[engine] = ctx; + return 0; +} + +static void +nv84_crypt_context_del(struct nouveau_channel *chan, int engine) +{ + struct nouveau_gpuobj *ctx = chan->engctx[engine]; + struct drm_device *dev = chan->dev; + u32 inst; + + 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, &ctx); + + atomic_dec(&chan->vm->engref[engine]); + chan->engctx[engine] = NULL; +} + +static int +nv84_crypt_object_new(struct nouveau_channel *chan, int engine, + u32 handle, u16 class) +{ + struct drm_device *dev = chan->dev; + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_gpuobj *obj = NULL; + int ret; + + ret = nouveau_gpuobj_new(dev, chan, 16, 16, NVOBJ_FLAG_ZERO_FREE, &obj); + if (ret) + return ret; + obj->engine = 5; + obj->class = class; + + nv_wo32(obj, 0x00, class); + dev_priv->engine.instmem.flush(dev); + + ret = nouveau_ramht_insert(chan, handle, obj); + nouveau_gpuobj_ref(NULL, &obj); + return ret; +} + +static void +nv84_crypt_tlb_flush(struct drm_device *dev, int engine) +{ + nv50_vm_flush_engine(dev, 0x0a); +} + +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); +} + +static int +nv84_crypt_fini(struct drm_device *dev, int engine, bool suspend) +{ + nv_wr32(dev, 0x102140, 0x00000000); + return 0; +} + +static int +nv84_crypt_init(struct drm_device *dev, int engine) +{ + nv_mask(dev, 0x000200, 0x00004000, 0x00000000); + nv_mask(dev, 0x000200, 0x00004000, 0x00004000); + + nv_wr32(dev, 0x102130, 0xffffffff); + nv_wr32(dev, 0x102140, 0xffffffbf); + + nv_wr32(dev, 0x10200c, 0x00000010); + return 0; +} + +static void +nv84_crypt_destroy(struct drm_device *dev, int engine) +{ + struct nv84_crypt_engine *pcrypt = nv_engine(dev, engine); + + NVOBJ_ENGINE_DEL(dev, CRYPT); + + nouveau_irq_unregister(dev, 14); + kfree(pcrypt); +} + +int +nv84_crypt_create(struct drm_device *dev) +{ + struct nv84_crypt_engine *pcrypt; + + pcrypt = kzalloc(sizeof(*pcrypt), GFP_KERNEL); + if (!pcrypt) + return -ENOMEM; + + pcrypt->base.destroy = nv84_crypt_destroy; + pcrypt->base.init = nv84_crypt_init; + pcrypt->base.fini = nv84_crypt_fini; + pcrypt->base.context_new = nv84_crypt_context_new; + pcrypt->base.context_del = nv84_crypt_context_del; + pcrypt->base.object_new = nv84_crypt_object_new; + pcrypt->base.tlb_flush = nv84_crypt_tlb_flush; + + nouveau_irq_register(dev, 14, nv84_crypt_isr); + + NVOBJ_ENGINE_ADD(dev, CRYPT, &pcrypt->base); + NVOBJ_CLASS (dev, 0x74c1, CRYPT); + return 0; +} |