1 files changed, 219 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nv50_mpeg.c b/drivers/gpu/drm/nouveau/nv50_mpeg.c
new file mode 100644
index 000000000000..82666bc69a2c
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nv50_mpeg.c
@@ -0,0 +1,219 @@
+/*
+ * Copyright 2011 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_ramht.h"
+
+struct nv50_mpeg_engine {
+        struct nouveau_exec_engine base;
+};
+
+static int
+nv50_mpeg_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 = NULL;
+        int ret;
+
+        NV_DEBUG(dev, "ch%d\n", chan->id);
+
+        ret = nouveau_gpuobj_new(dev, chan, 128 * 4, 0, NVOBJ_FLAG_ZERO_ALLOC |
+                                 NVOBJ_FLAG_ZERO_FREE, &ctx);
+        if (ret)
+                return ret;
+
+        nv_wo32(ramin, 0x60, 0x80190002);
+        nv_wo32(ramin, 0x64, ctx->vinst + ctx->size - 1);
+        nv_wo32(ramin, 0x68, ctx->vinst);
+        nv_wo32(ramin, 0x6c, 0);
+        nv_wo32(ramin, 0x70, 0);
+        nv_wo32(ramin, 0x74, 0x00010000);
+
+        nv_wo32(ctx, 0x70, 0x00801ec1);
+        nv_wo32(ctx, 0x7c, 0x0000037c);
+        dev_priv->engine.instmem.flush(dev);
+
+        chan->engctx[engine] = ctx;
+        return 0;
+}
+
+static void
+nv50_mpeg_context_del(struct nouveau_channel *chan, int engine)
+{
+        struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
+        struct nouveau_gpuobj *ctx = chan->engctx[engine];
+        struct drm_device *dev = chan->dev;
+        unsigned long flags;
+        u32 inst, i;
+
+        if (!chan->ramin)
+                return;
+
+        inst  = chan->ramin->vinst >> 12;
+        inst |= 0x80000000;
+
+        spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
+        nv_mask(dev, 0x00b32c, 0x00000001, 0x00000000);
+        if (nv_rd32(dev, 0x00b318) == inst)
+                nv_mask(dev, 0x00b318, 0x80000000, 0x00000000);
+        nv_mask(dev, 0x00b32c, 0x00000001, 0x00000001);
+        spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);
+
+        for (i = 0x60; i <= 0x74; i += 4)
+                nv_wo32(chan->ramin, i, 0x00000000);
+        nouveau_gpuobj_ref(NULL, &ctx);
+        chan->engctx[engine] = NULL;
+}
+
+static int
+nv50_mpeg_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 = 2;
+        obj->class  = class;
+
+        nv_wo32(obj, 0x00, class);
+        nv_wo32(obj, 0x04, 0x00000000);
+        nv_wo32(obj, 0x08, 0x00000000);
+        nv_wo32(obj, 0x0c, 0x00000000);
+        dev_priv->engine.instmem.flush(dev);
+
+        ret = nouveau_ramht_insert(chan, handle, obj);
+        nouveau_gpuobj_ref(NULL, &obj);
+        return ret;
+}
+
+static void
+nv50_mpeg_tlb_flush(struct drm_device *dev, int engine)
+{
+        nv50_vm_flush_engine(dev, 0x08);
+}
+
+static int
+nv50_mpeg_init(struct drm_device *dev, int engine)
+{
+        nv_wr32(dev, 0x00b32c, 0x00000000);
+        nv_wr32(dev, 0x00b314, 0x00000100);
+        nv_wr32(dev, 0x00b0e0, 0x0000001a);
+
+        nv_wr32(dev, 0x00b220, 0x00000044);
+        nv_wr32(dev, 0x00b300, 0x00801ec1);
+        nv_wr32(dev, 0x00b390, 0x00000000);
+        nv_wr32(dev, 0x00b394, 0x00000000);
+        nv_wr32(dev, 0x00b398, 0x00000000);
+        nv_mask(dev, 0x00b32c, 0x00000001, 0x00000001);
+
+        nv_wr32(dev, 0x00b100, 0xffffffff);
+        nv_wr32(dev, 0x00b140, 0xffffffff);
+
+        if (!nv_wait(dev, 0x00b200, 0x00000001, 0x00000000)) {
+                NV_ERROR(dev, "PMPEG init: 0x%08x\n", nv_rd32(dev, 0x00b200));
+                return -EBUSY;
+        }
+
+        return 0;
+}
+
+static int
+nv50_mpeg_fini(struct drm_device *dev, int engine)
+{
+        /*XXX: context save for s/r */
+        nv_mask(dev, 0x00b32c, 0x00000001, 0x00000000);
+        nv_wr32(dev, 0x00b140, 0x00000000);
+        return 0;
+}
+
+static void
+nv50_mpeg_isr(struct drm_device *dev)
+{
+        u32 stat = nv_rd32(dev, 0x00b100);
+        u32 type = nv_rd32(dev, 0x00b230);
+        u32 mthd = nv_rd32(dev, 0x00b234);
+        u32 data = nv_rd32(dev, 0x00b238);
+        u32 show = stat;
+
+        if (stat & 0x01000000) {
+                /* happens on initial binding of the object */
+                if (type == 0x00000020 && mthd == 0x0000) {
+                        nv_wr32(dev, 0x00b308, 0x00000100);
+                        show &= ~0x01000000;
+                }
+        }
+
+        if (show && nouveau_ratelimit()) {
+                NV_INFO(dev, "PMPEG - 0x%08x 0x%08x 0x%08x 0x%08x\n",
+                        stat, type, mthd, data);
+        }
+
+        nv_wr32(dev, 0x00b100, stat);
+        nv_wr32(dev, 0x00b230, 0x00000001);
+        nv50_fb_vm_trap(dev, 1);
+}
+
+static void
+nv50_mpeg_destroy(struct drm_device *dev, int engine)
+{
+        struct nv50_mpeg_engine *pmpeg = nv_engine(dev, engine);
+
+        nouveau_irq_unregister(dev, 0);
+
+        NVOBJ_ENGINE_DEL(dev, MPEG);
+        kfree(pmpeg);
+}
+
+int
+nv50_mpeg_create(struct drm_device *dev)
+{
+        struct nv50_mpeg_engine *pmpeg;
+
+        pmpeg = kzalloc(sizeof(*pmpeg), GFP_KERNEL);
+        if (!pmpeg)
+                return -ENOMEM;
+
+        pmpeg->base.destroy = nv50_mpeg_destroy;
+        pmpeg->base.init = nv50_mpeg_init;
+        pmpeg->base.fini = nv50_mpeg_fini;
+        pmpeg->base.context_new = nv50_mpeg_context_new;
+        pmpeg->base.context_del = nv50_mpeg_context_del;
+        pmpeg->base.object_new = nv50_mpeg_object_new;
+        pmpeg->base.tlb_flush = nv50_mpeg_tlb_flush;
+
+        nouveau_irq_register(dev, 0, nv50_mpeg_isr);
+
+        NVOBJ_ENGINE_ADD(dev, MPEG, &pmpeg->base);
+        NVOBJ_CLASS(dev, 0x8274, MPEG);
+        return 0;
+
+}