--- /dev/null
+/*
+ * 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 "priv.h"
+
+#include <subdev/fb.h>
+
+struct nv50_instmem_priv {
+ struct nvkm_instmem base;
+ spinlock_t lock;
+ u64 addr;
+};
+
+struct nv50_instobj_priv {
+ struct nvkm_instobj base;
+ struct nvkm_mem *mem;
+};
+
+/******************************************************************************
+ * instmem object implementation
+ *****************************************************************************/
+
+static u32
+nv50_instobj_rd32(struct nvkm_object *object, u64 offset)
+{
+ struct nv50_instmem_priv *priv = (void *)nvkm_instmem(object);
+ struct nv50_instobj_priv *node = (void *)object;
+ unsigned long flags;
+ u64 base = (node->mem->offset + offset) & 0xffffff00000ULL;
+ u64 addr = (node->mem->offset + offset) & 0x000000fffffULL;
+ u32 data;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if (unlikely(priv->addr != base)) {
+ nv_wr32(priv, 0x001700, base >> 16);
+ priv->addr = base;
+ }
+ data = nv_rd32(priv, 0x700000 + addr);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return data;
+}
+
+static void
+nv50_instobj_wr32(struct nvkm_object *object, u64 offset, u32 data)
+{
+ struct nv50_instmem_priv *priv = (void *)nvkm_instmem(object);
+ struct nv50_instobj_priv *node = (void *)object;
+ unsigned long flags;
+ u64 base = (node->mem->offset + offset) & 0xffffff00000ULL;
+ u64 addr = (node->mem->offset + offset) & 0x000000fffffULL;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if (unlikely(priv->addr != base)) {
+ nv_wr32(priv, 0x001700, base >> 16);
+ priv->addr = base;
+ }
+ nv_wr32(priv, 0x700000 + addr, data);
+ spin_unlock_irqrestore(&priv->lock, flags);
+}
+
+static void
+nv50_instobj_dtor(struct nvkm_object *object)
+{
+ struct nv50_instobj_priv *node = (void *)object;
+ struct nvkm_fb *pfb = nvkm_fb(object);
+ pfb->ram->put(pfb, &node->mem);
+ nvkm_instobj_destroy(&node->base);
+}
+
+static int
+nv50_instobj_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
+ struct nvkm_oclass *oclass, void *data, u32 size,
+ struct nvkm_object **pobject)
+{
+ struct nvkm_fb *pfb = nvkm_fb(parent);
+ struct nvkm_instobj_args *args = data;
+ struct nv50_instobj_priv *node;
+ int ret;
+
+ args->size = max((args->size + 4095) & ~4095, (u32)4096);
+ args->align = max((args->align + 4095) & ~4095, (u32)4096);
+
+ ret = nvkm_instobj_create(parent, engine, oclass, &node);
+ *pobject = nv_object(node);
+ if (ret)
+ return ret;
+
+ ret = pfb->ram->get(pfb, args->size, args->align, 0, 0x800, &node->mem);
+ if (ret)
+ return ret;
+
+ node->base.addr = node->mem->offset;
+ node->base.size = node->mem->size << 12;
+ node->mem->page_shift = 12;
+ return 0;
+}
+
+static struct nvkm_instobj_impl
+nv50_instobj_oclass = {
+ .base.ofuncs = &(struct nvkm_ofuncs) {
+ .ctor = nv50_instobj_ctor,
+ .dtor = nv50_instobj_dtor,
+ .init = _nvkm_instobj_init,
+ .fini = _nvkm_instobj_fini,
+ .rd32 = nv50_instobj_rd32,
+ .wr32 = nv50_instobj_wr32,
+ },
+};
+
+/******************************************************************************
+ * instmem subdev implementation
+ *****************************************************************************/
+
+static int
+nv50_instmem_fini(struct nvkm_object *object, bool suspend)
+{
+ struct nv50_instmem_priv *priv = (void *)object;
+ priv->addr = ~0ULL;
+ return nvkm_instmem_fini(&priv->base, suspend);
+}
+
+static int
+nv50_instmem_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
+ struct nvkm_oclass *oclass, void *data, u32 size,
+ struct nvkm_object **pobject)
+{
+ struct nv50_instmem_priv *priv;
+ int ret;
+
+ ret = nvkm_instmem_create(parent, engine, oclass, &priv);
+ *pobject = nv_object(priv);
+ if (ret)
+ return ret;
+
+ spin_lock_init(&priv->lock);
+ return 0;
+}
+
+struct nvkm_oclass *
+nv50_instmem_oclass = &(struct nvkm_instmem_impl) {
+ .base.handle = NV_SUBDEV(INSTMEM, 0x50),
+ .base.ofuncs = &(struct nvkm_ofuncs) {
+ .ctor = nv50_instmem_ctor,
+ .dtor = _nvkm_instmem_dtor,
+ .init = _nvkm_instmem_init,
+ .fini = nv50_instmem_fini,
+ },
+ .instobj = &nv50_instobj_oclass.base,
+}.base;
Code Review / kvmfornfv.git / blobdiff