drm/nv84: add support for the PCRYPT engine

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

8 files changed, 218 insertions, 11 deletions

diff --git a/drivers/gpu/drm/nouveau/Makefile b/drivers/gpu/drm/nouveau/Makefile
index 23fa82d..a541f5b 100644
--- a/drivers/gpu/drm/nouveau/Makefile
+++ b/drivers/gpu/drm/nouveau/Makefile
@@ -18,6 +18,7 @@ nouveau-y := nouveau_drv.o nouveau_state.o nouveau_channel.o nouveau_mem.o \
              nv04_graph.o nv10_graph.o nv20_graph.o \
              nv40_graph.o nv50_graph.o nvc0_graph.o \
              nv40_grctx.o nv50_grctx.o \
+             nv84_crypt.o \
              nv04_instmem.o nv50_instmem.o nvc0_instmem.o \
              nv50_crtc.o nv50_dac.o nv50_sor.o \
              nv50_cursor.o nv50_display.o nv50_fbcon.o \
diff --git a/drivers/gpu/drm/nouveau/nouveau_channel.c b/drivers/gpu/drm/nouveau/nouveau_channel.c
index 76033c5..8f2df6b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_channel.c
+++ b/drivers/gpu/drm/nouveau/nouveau_channel.c
@@ -112,6 +112,7 @@ nouveau_channel_alloc(struct drm_device *dev, struct nouveau_channel **chan_ret,
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
 	struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
 	struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
+	struct nouveau_crypt_engine *pcrypt = &dev_priv->engine.crypt;
 	struct nouveau_channel *chan;
 	unsigned long flags;
 	int user, ret;
@@ -214,6 +215,14 @@ nouveau_channel_alloc(struct drm_device *dev, struct nouveau_channel **chan_ret,
 		return ret;
 	}
 
+	if (pcrypt->create_context) {
+		ret = pcrypt->create_context(chan);
+		if (ret) {
+			nouveau_channel_put(&chan);
+			return ret;
+		}
+	}
+
 	/* Construct inital RAMFC for new channel */
 	ret = pfifo->create_context(chan);
 	if (ret) {
@@ -280,6 +289,7 @@ nouveau_channel_put_unlocked(struct nouveau_channel **pchan)
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
 	struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
 	struct nouveau_pgraph_engine *pgraph = &dev_priv->engine.graph;
+	struct nouveau_crypt_engine *pcrypt = &dev_priv->engine.crypt;
 	unsigned long flags;
 	int ret;
 
@@ -328,6 +338,8 @@ nouveau_channel_put_unlocked(struct nouveau_channel **pchan)
 	/* destroy the engine specific contexts */
 	pfifo->destroy_context(chan);
 	pgraph->destroy_context(chan);
+	if (pcrypt->destroy_context)
+		pcrypt->destroy_context(chan);
 
 	pfifo->reassign(dev, true);
 
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.c b/drivers/gpu/drm/nouveau/nouveau_drv.c
index f139aa2..6dbb881 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.c
@@ -299,6 +299,7 @@ nouveau_pci_resume(struct pci_dev *pdev)
 	engine->timer.init(dev);
 	engine->fb.init(dev);
 	engine->graph.init(dev);
+	engine->crypt.init(dev);
 	engine->fifo.init(dev);
 
 	NV_INFO(dev, "Restoring GPU objects...\n");
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 3fb8799..d15bfd4 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -132,6 +132,11 @@ enum nouveau_flags {
 
 #define NVOBJ_ENGINE_SW		0
 #define NVOBJ_ENGINE_GR		1
+#define NVOBJ_ENGINE_PPP	2
+#define NVOBJ_ENGINE_COPY	3
+#define NVOBJ_ENGINE_VP		4
+#define NVOBJ_ENGINE_CRYPT      5
+#define NVOBJ_ENGINE_BSP	6
 #define NVOBJ_ENGINE_DISPLAY	0xcafe0001
 #define NVOBJ_ENGINE_INT	0xdeadbeef
 
@@ -208,6 +213,7 @@ struct nouveau_channel {
 	/* PGRAPH context */
 	/* XXX may be merge 2 pointers as private data ??? */
 	struct nouveau_gpuobj *ramin_grctx;
+	struct nouveau_gpuobj *crypt_ctx;
 	void *pgraph_ctx;
 
 	/* NV50 VM */
@@ -444,6 +450,16 @@ struct nouveau_pm_engine {
 	int (*temp_get)(struct drm_device *);
 };
 
+struct nouveau_crypt_engine {
+	bool registered;
+
+	int  (*init)(struct drm_device *);
+	void (*takedown)(struct drm_device *);
+	int  (*create_context)(struct nouveau_channel *);
+	void (*destroy_context)(struct nouveau_channel *);
+	void (*tlb_flush)(struct drm_device *dev);
+};
+
 struct nouveau_engine {
 	struct nouveau_instmem_engine instmem;
 	struct nouveau_mc_engine      mc;
@@ -454,6 +470,7 @@ struct nouveau_engine {
 	struct nouveau_display_engine display;
 	struct nouveau_gpio_engine    gpio;
 	struct nouveau_pm_engine      pm;
+	struct nouveau_crypt_engine   crypt;
 };
 
 struct nouveau_pll_vals {
@@ -1113,6 +1130,13 @@ extern void nvc0_graph_destroy_context(struct nouveau_channel *);
 extern int  nvc0_graph_load_context(struct nouveau_channel *);
 extern int  nvc0_graph_unload_context(struct drm_device *);
 
+/* nv84_crypt.c */
+extern int  nv84_crypt_init(struct drm_device *dev);
+extern void nv84_crypt_fini(struct drm_device *dev);
+extern int  nv84_crypt_create_context(struct nouveau_channel *);
+extern void nv84_crypt_destroy_context(struct nouveau_channel *);
+extern void nv84_crypt_tlb_flush(struct drm_device *dev);
+
 /* nv04_instmem.c */
 extern int  nv04_instmem_init(struct drm_device *);
 extern void nv04_instmem_takedown(struct drm_device *);
diff --git a/drivers/gpu/drm/nouveau/nouveau_irq.c b/drivers/gpu/drm/nouveau/nouveau_irq.c
index f09151d..ca9b969 100644
--- a/drivers/gpu/drm/nouveau/nouveau_irq.c
+++ b/drivers/gpu/drm/nouveau/nouveau_irq.c
@@ -1230,6 +1230,22 @@ nouveau_irq_handler(DRM_IRQ_ARGS)
 		status &= ~NV_PMC_INTR_0_PGRAPH_PENDING;
 	}
 
+	if (status & 0x00004000) {
+		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;
+
+		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, nouveau_ratelimit(), "PCRYPT");
+		status &= ~0x00004000;
+
+	}
+
 	if (status & NV_PMC_INTR_0_CRTCn_PENDING) {
 		nouveau_crtc_irq_handler(dev, (status>>24)&3);
 		status &= ~NV_PMC_INTR_0_CRTCn_PENDING;
diff --git a/drivers/gpu/drm/nouveau/nouveau_object.c b/drivers/gpu/drm/nouveau/nouveau_object.c
index 6226beb..ee52653 100644
--- a/drivers/gpu/drm/nouveau/nouveau_object.c
+++ b/drivers/gpu/drm/nouveau/nouveau_object.c
@@ -272,6 +272,7 @@ nouveau_gpuobj_init(struct drm_device *dev)
 	NV_DEBUG(dev, "\n");
 
 	INIT_LIST_HEAD(&dev_priv->gpuobj_list);
+	INIT_LIST_HEAD(&dev_priv->classes);
 	spin_lock_init(&dev_priv->ramin_lock);
 	dev_priv->ramin_base = ~0;
 
@@ -686,7 +687,7 @@ nouveau_gpuobj_channel_init_pramin(struct nouveau_channel *chan)
 	NV_DEBUG(dev, "ch%d\n", chan->id);
 
 	/* Base amount for object storage (4KiB enough?) */
-	size = 0x1000;
+	size = 0x2000;
 	base = 0;
 
 	/* PGRAPH context */
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index be28754..f13134a 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -98,6 +98,8 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
 		engine->pm.clock_get		= nv04_pm_clock_get;
 		engine->pm.clock_pre		= nv04_pm_clock_pre;
 		engine->pm.clock_set		= nv04_pm_clock_set;
+		engine->crypt.init		= nouveau_stub_init;
+		engine->crypt.takedown		= nouveau_stub_takedown;
 		break;
 	case 0x10:
 		engine->instmem.init		= nv04_instmem_init;
@@ -151,6 +153,8 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
 		engine->pm.clock_get		= nv04_pm_clock_get;
 		engine->pm.clock_pre		= nv04_pm_clock_pre;
 		engine->pm.clock_set		= nv04_pm_clock_set;
+		engine->crypt.init		= nouveau_stub_init;
+		engine->crypt.takedown		= nouveau_stub_takedown;
 		break;
 	case 0x20:
 		engine->instmem.init		= nv04_instmem_init;
@@ -204,6 +208,8 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
 		engine->pm.clock_get		= nv04_pm_clock_get;
 		engine->pm.clock_pre		= nv04_pm_clock_pre;
 		engine->pm.clock_set		= nv04_pm_clock_set;
+		engine->crypt.init		= nouveau_stub_init;
+		engine->crypt.takedown		= nouveau_stub_takedown;
 		break;
 	case 0x30:
 		engine->instmem.init		= nv04_instmem_init;
@@ -259,6 +265,8 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
 		engine->pm.clock_set		= nv04_pm_clock_set;
 		engine->pm.voltage_get		= nouveau_voltage_gpio_get;
 		engine->pm.voltage_set		= nouveau_voltage_gpio_set;
+		engine->crypt.init		= nouveau_stub_init;
+		engine->crypt.takedown		= nouveau_stub_takedown;
 		break;
 	case 0x40:
 	case 0x60:
@@ -316,6 +324,8 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
 		engine->pm.voltage_get		= nouveau_voltage_gpio_get;
 		engine->pm.voltage_set		= nouveau_voltage_gpio_set;
 		engine->pm.temp_get		= nv40_temp_get;
+		engine->crypt.init		= nouveau_stub_init;
+		engine->crypt.takedown		= nouveau_stub_takedown;
 		break;
 	case 0x50:
 	case 0x80: /* gotta love NVIDIA's consistency.. */
@@ -380,19 +390,23 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
 		engine->gpio.set		= nv50_gpio_set;
 		engine->gpio.irq_enable		= nv50_gpio_irq_enable;
 		switch (dev_priv->chipset) {
-		case 0xa3:
-		case 0xa5:
-		case 0xa8:
-		case 0xaf:
-			engine->pm.clock_get	= nva3_pm_clock_get;
-			engine->pm.clock_pre	= nva3_pm_clock_pre;
-			engine->pm.clock_set	= nva3_pm_clock_set;
-			break;
-		default:
+		case 0x84:
+		case 0x86:
+		case 0x92:
+		case 0x94:
+		case 0x96:
+		case 0x98:
+		case 0xa0:
+		case 0x50:
 			engine->pm.clock_get	= nv50_pm_clock_get;
 			engine->pm.clock_pre	= nv50_pm_clock_pre;
 			engine->pm.clock_set	= nv50_pm_clock_set;
 			break;
+		default:
+			engine->pm.clock_get	= nva3_pm_clock_get;
+			engine->pm.clock_pre	= nva3_pm_clock_pre;
+			engine->pm.clock_set	= nva3_pm_clock_set;
+			break;
 		}
 		engine->pm.voltage_get		= nouveau_voltage_gpio_get;
 		engine->pm.voltage_set		= nouveau_voltage_gpio_set;
@@ -400,6 +414,23 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
 			engine->pm.temp_get	= nv84_temp_get;
 		else
 			engine->pm.temp_get	= nv40_temp_get;
+		switch (dev_priv->chipset) {
+		case 0x84:
+		case 0x86:
+		case 0x92:
+		case 0x94:
+		case 0x96:
+		case 0xa0:
+			engine->crypt.init	= nv84_crypt_init;
+			engine->crypt.takedown	= nv84_crypt_fini;
+			engine->crypt.create_context = nv84_crypt_create_context;
+			engine->crypt.destroy_context = nv84_crypt_destroy_context;
+			break;
+		default:
+			engine->crypt.init	= nouveau_stub_init;
+			engine->crypt.takedown	= nouveau_stub_takedown;
+			break;
+		}
 		break;
 	case 0xC0:
 		engine->instmem.init		= nvc0_instmem_init;
@@ -447,6 +478,8 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
 		engine->gpio.get		= nv50_gpio_get;
 		engine->gpio.set		= nv50_gpio_set;
 		engine->gpio.irq_enable		= nv50_gpio_irq_enable;
+		engine->crypt.init		= nouveau_stub_init;
+		engine->crypt.takedown		= nouveau_stub_takedown;
 		break;
 	default:
 		NV_ERROR(dev, "NV%02x unsupported\n", dev_priv->chipset);
@@ -619,10 +652,15 @@ nouveau_card_init(struct drm_device *dev)
 		if (ret)
 			goto out_fb;
 
+		/* PCRYPT */
+		ret = engine->crypt.init(dev);
+		if (ret)
+			goto out_graph;
+
 		/* PFIFO */
 		ret = engine->fifo.init(dev);
 		if (ret)
-			goto out_graph;
+			goto out_crypt;
 	}
 
 	ret = engine->display.create(dev);
@@ -669,6 +707,9 @@ out_display:
 out_fifo:
 	if (!nouveau_noaccel)
 		engine->fifo.takedown(dev);
+out_crypt:
+	if (!nouveau_noaccel)
+		engine->crypt.takedown(dev);
 out_graph:
 	if (!nouveau_noaccel)
 		engine->graph.takedown(dev);
@@ -712,6 +753,7 @@ static void nouveau_card_takedown(struct drm_device *dev)
 
 	if (!nouveau_noaccel) {
 		engine->fifo.takedown(dev);
+		engine->crypt.takedown(dev);
 		engine->graph.takedown(dev);
 	}
 	engine->fb.takedown(dev);
diff --git a/drivers/gpu/drm/nouveau/nv84_crypt.c b/drivers/gpu/drm/nouveau/nv84_crypt.c
new file mode 100644
index 0000000..63bd6bb
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nv84_crypt.c
@@ -0,0 +1,110 @@
+/*
+ * 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"
+
+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, 0x1000,
+				 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);
+	return 0;
+}
+
+void
+nv84_crypt_destroy_context(struct nouveau_channel *chan)
+{
+	struct drm_device *dev = chan->dev;
+	u32 inst;
+
+	if (!chan->ramin)
+		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);
+}
+
+void
+nv84_crypt_tlb_flush(struct drm_device *dev)
+{
+	nv50_vm_flush(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);
+	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);
+}