1 files changed, 273 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.c
new file mode 100644
index 000000000000..f748ba49dfc8
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bar/nv50.c
@@ -0,0 +1,273 @@
+/*
+ * Copyright 2012 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 <core/gpuobj.h>
+
+#include <subdev/timer.h>
+#include <subdev/fb.h>
+#include <subdev/vm.h>
+
+#include "priv.h"
+
+struct nv50_bar_priv {
+	struct nouveau_bar base;
+	spinlock_t lock;
+	struct nouveau_gpuobj *mem;
+	struct nouveau_gpuobj *pad;
+	struct nouveau_gpuobj *pgd;
+	struct nouveau_vm *bar1_vm;
+	struct nouveau_gpuobj *bar1;
+	struct nouveau_vm *bar3_vm;
+	struct nouveau_gpuobj *bar3;
+};
+
+static int
+nv50_bar_kmap(struct nouveau_bar *bar, struct nouveau_mem *mem,
+	      u32 flags, struct nouveau_vma *vma)
+{
+	struct nv50_bar_priv *priv = (void *)bar;
+	int ret;
+
+	ret = nouveau_vm_get(priv->bar3_vm, mem->size << 12, 12, flags, vma);
+	if (ret)
+		return ret;
+
+	nouveau_vm_map(vma, mem);
+	return 0;
+}
+
+static int
+nv50_bar_umap(struct nouveau_bar *bar, struct nouveau_mem *mem,
+	      u32 flags, struct nouveau_vma *vma)
+{
+	struct nv50_bar_priv *priv = (void *)bar;
+	int ret;
+
+	ret = nouveau_vm_get(priv->bar1_vm, mem->size << 12, 12, flags, vma);
+	if (ret)
+		return ret;
+
+	nouveau_vm_map(vma, mem);
+	return 0;
+}
+
+static void
+nv50_bar_unmap(struct nouveau_bar *bar, struct nouveau_vma *vma)
+{
+	nouveau_vm_unmap(vma);
+	nouveau_vm_put(vma);
+}
+
+static void
+nv50_bar_flush(struct nouveau_bar *bar)
+{
+	struct nv50_bar_priv *priv = (void *)bar;
+	unsigned long flags;
+	spin_lock_irqsave(&priv->lock, flags);
+	nv_wr32(priv, 0x00330c, 0x00000001);
+	if (!nv_wait(priv, 0x00330c, 0x00000002, 0x00000000))
+		nv_warn(priv, "flush timeout\n");
+	spin_unlock_irqrestore(&priv->lock, flags);
+}
+
+void
+nv84_bar_flush(struct nouveau_bar *bar)
+{
+	struct nv50_bar_priv *priv = (void *)bar;
+	unsigned long flags;
+	spin_lock_irqsave(&priv->lock, flags);
+	nv_wr32(bar, 0x070000, 0x00000001);
+	if (!nv_wait(priv, 0x070000, 0x00000002, 0x00000000))
+		nv_warn(priv, "flush timeout\n");
+	spin_unlock_irqrestore(&priv->lock, flags);
+}
+
+static int
+nv50_bar_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
+	      struct nouveau_oclass *oclass, void *data, u32 size,
+	      struct nouveau_object **pobject)
+{
+	struct nouveau_device *device = nv_device(parent);
+	struct nouveau_object *heap;
+	struct nouveau_vm *vm;
+	struct nv50_bar_priv *priv;
+	u64 start, limit;
+	int ret;
+
+	ret = nouveau_bar_create(parent, engine, oclass, &priv);
+	*pobject = nv_object(priv);
+	if (ret)
+		return ret;
+
+	ret = nouveau_gpuobj_new(nv_object(priv), NULL, 0x20000, 0,
+				 NVOBJ_FLAG_HEAP, &priv->mem);
+	heap = nv_object(priv->mem);
+	if (ret)
+		return ret;
+
+	ret = nouveau_gpuobj_new(nv_object(priv), heap,
+				(device->chipset == 0x50) ? 0x1400 : 0x0200,
+				 0, 0, &priv->pad);
+	if (ret)
+		return ret;
+
+	ret = nouveau_gpuobj_new(nv_object(priv), heap, 0x4000, 0,
+				 0, &priv->pgd);
+	if (ret)
+		return ret;
+
+	/* BAR3 */
+	start = 0x0100000000ULL;
+	limit = start + nv_device_resource_len(device, 3);
+
+	ret = nouveau_vm_new(device, start, limit, start, &vm);
+	if (ret)
+		return ret;
+
+	atomic_inc(&vm->engref[NVDEV_SUBDEV_BAR]);
+
+	ret = nouveau_gpuobj_new(nv_object(priv), heap,
+				 ((limit-- - start) >> 12) * 8, 0x1000,
+				 NVOBJ_FLAG_ZERO_ALLOC, &vm->pgt[0].obj[0]);
+	vm->pgt[0].refcount[0] = 1;
+	if (ret)
+		return ret;
+
+	ret = nouveau_vm_ref(vm, &priv->bar3_vm, priv->pgd);
+	nouveau_vm_ref(NULL, &vm, NULL);
+	if (ret)
+		return ret;
+
+	ret = nouveau_gpuobj_new(nv_object(priv), heap, 24, 16, 0, &priv->bar3);
+	if (ret)
+		return ret;
+
+	nv_wo32(priv->bar3, 0x00, 0x7fc00000);
+	nv_wo32(priv->bar3, 0x04, lower_32_bits(limit));
+	nv_wo32(priv->bar3, 0x08, lower_32_bits(start));
+	nv_wo32(priv->bar3, 0x0c, upper_32_bits(limit) << 24 |
+				  upper_32_bits(start));
+	nv_wo32(priv->bar3, 0x10, 0x00000000);
+	nv_wo32(priv->bar3, 0x14, 0x00000000);
+
+	/* BAR1 */
+	start = 0x0000000000ULL;
+	limit = start + nv_device_resource_len(device, 1);
+
+	ret = nouveau_vm_new(device, start, limit--, start, &vm);
+	if (ret)
+		return ret;
+
+	atomic_inc(&vm->engref[NVDEV_SUBDEV_BAR]);
+
+	ret = nouveau_vm_ref(vm, &priv->bar1_vm, priv->pgd);
+	nouveau_vm_ref(NULL, &vm, NULL);
+	if (ret)
+		return ret;
+
+	ret = nouveau_gpuobj_new(nv_object(priv), heap, 24, 16, 0, &priv->bar1);
+	if (ret)
+		return ret;
+
+	nv_wo32(priv->bar1, 0x00, 0x7fc00000);
+	nv_wo32(priv->bar1, 0x04, lower_32_bits(limit));
+	nv_wo32(priv->bar1, 0x08, lower_32_bits(start));
+	nv_wo32(priv->bar1, 0x0c, upper_32_bits(limit) << 24 |
+				  upper_32_bits(start));
+	nv_wo32(priv->bar1, 0x10, 0x00000000);
+	nv_wo32(priv->bar1, 0x14, 0x00000000);
+
+	priv->base.alloc = nouveau_bar_alloc;
+	priv->base.kmap = nv50_bar_kmap;
+	priv->base.umap = nv50_bar_umap;
+	priv->base.unmap = nv50_bar_unmap;
+	if (device->chipset == 0x50)
+		priv->base.flush = nv50_bar_flush;
+	else
+		priv->base.flush = nv84_bar_flush;
+	spin_lock_init(&priv->lock);
+	return 0;
+}
+
+static void
+nv50_bar_dtor(struct nouveau_object *object)
+{
+	struct nv50_bar_priv *priv = (void *)object;
+	nouveau_gpuobj_ref(NULL, &priv->bar1);
+	nouveau_vm_ref(NULL, &priv->bar1_vm, priv->pgd);
+	nouveau_gpuobj_ref(NULL, &priv->bar3);
+	if (priv->bar3_vm) {
+		nouveau_gpuobj_ref(NULL, &priv->bar3_vm->pgt[0].obj[0]);
+		nouveau_vm_ref(NULL, &priv->bar3_vm, priv->pgd);
+	}
+	nouveau_gpuobj_ref(NULL, &priv->pgd);
+	nouveau_gpuobj_ref(NULL, &priv->pad);
+	nouveau_gpuobj_ref(NULL, &priv->mem);
+	nouveau_bar_destroy(&priv->base);
+}
+
+static int
+nv50_bar_init(struct nouveau_object *object)
+{
+	struct nv50_bar_priv *priv = (void *)object;
+	int ret, i;
+
+	ret = nouveau_bar_init(&priv->base);
+	if (ret)
+		return ret;
+
+	nv_mask(priv, 0x000200, 0x00000100, 0x00000000);
+	nv_mask(priv, 0x000200, 0x00000100, 0x00000100);
+	nv_wr32(priv, 0x100c80, 0x00060001);
+	if (!nv_wait(priv, 0x100c80, 0x00000001, 0x00000000)) {
+		nv_error(priv, "vm flush timeout\n");
+		return -EBUSY;
+	}
+
+	nv_wr32(priv, 0x001704, 0x00000000 | priv->mem->addr >> 12);
+	nv_wr32(priv, 0x001704, 0x40000000 | priv->mem->addr >> 12);
+	nv_wr32(priv, 0x001708, 0x80000000 | priv->bar1->node->offset >> 4);
+	nv_wr32(priv, 0x00170c, 0x80000000 | priv->bar3->node->offset >> 4);
+	for (i = 0; i < 8; i++)
+		nv_wr32(priv, 0x001900 + (i * 4), 0x00000000);
+	return 0;
+}
+
+static int
+nv50_bar_fini(struct nouveau_object *object, bool suspend)
+{
+	struct nv50_bar_priv *priv = (void *)object;
+	return nouveau_bar_fini(&priv->base, suspend);
+}
+
+struct nouveau_oclass
+nv50_bar_oclass = {
+	.handle = NV_SUBDEV(BAR, 0x50),
+	.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = nv50_bar_ctor,
+		.dtor = nv50_bar_dtor,
+		.init = nv50_bar_init,
+		.fini = nv50_bar_fini,
+	},
+};