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/*
* 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 <subdev/instmem.h>
#include <subdev/fb.h>
#include <core/mm.h>
struct nv50_instmem_priv {
struct nouveau_instmem base;
spinlock_t lock;
u64 addr;
};
struct nv50_instobj_priv {
struct nouveau_instobj base;
struct nouveau_mem *mem;
};
static int
nv50_instobj_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
struct nouveau_oclass *oclass, void *data, u32 size,
struct nouveau_object **pobject)
{
struct nouveau_fb *pfb = nouveau_fb(parent);
struct nv50_instobj_priv *node;
u32 align = (unsigned long)data;
int ret;
size = max((size + 4095) & ~4095, (u32)4096);
align = max((align + 4095) & ~4095, (u32)4096);
ret = nouveau_instobj_create(parent, engine, oclass, &node);
*pobject = nv_object(node);
if (ret)
return ret;
ret = pfb->ram->get(pfb, size, 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 void
nv50_instobj_dtor(struct nouveau_object *object)
{
struct nv50_instobj_priv *node = (void *)object;
struct nouveau_fb *pfb = nouveau_fb(object);
pfb->ram->put(pfb, &node->mem);
nouveau_instobj_destroy(&node->base);
}
static u32
nv50_instobj_rd32(struct nouveau_object *object, u64 offset)
{
struct nv50_instmem_priv *priv = (void *)object->engine;
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 nouveau_object *object, u64 offset, u32 data)
{
struct nv50_instmem_priv *priv = (void *)object->engine;
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 struct nouveau_oclass
nv50_instobj_oclass = {
.ofuncs = &(struct nouveau_ofuncs) {
.ctor = nv50_instobj_ctor,
.dtor = nv50_instobj_dtor,
.init = _nouveau_instobj_init,
.fini = _nouveau_instobj_fini,
.rd32 = nv50_instobj_rd32,
.wr32 = nv50_instobj_wr32,
},
};
static int
nv50_instmem_alloc(struct nouveau_instmem *imem, struct nouveau_object *parent,
u32 size, u32 align, struct nouveau_object **pobject)
{
struct nouveau_object *engine = nv_object(imem);
return nouveau_object_ctor(parent, engine, &nv50_instobj_oclass,
(void *)(unsigned long)align, size, pobject);
}
static int
nv50_instmem_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
struct nouveau_oclass *oclass, void *data, u32 size,
struct nouveau_object **pobject)
{
struct nv50_instmem_priv *priv;
int ret;
ret = nouveau_instmem_create(parent, engine, oclass, &priv);
*pobject = nv_object(priv);
if (ret)
return ret;
spin_lock_init(&priv->lock);
priv->base.alloc = nv50_instmem_alloc;
return 0;
}
static int
nv50_instmem_fini(struct nouveau_object *object, bool suspend)
{
struct nv50_instmem_priv *priv = (void *)object;
priv->addr = ~0ULL;
return nouveau_instmem_fini(&priv->base, suspend);
}
struct nouveau_oclass
nv50_instmem_oclass = {
.handle = NV_SUBDEV(INSTMEM, 0x50),
.ofuncs = &(struct nouveau_ofuncs) {
.ctor = nv50_instmem_ctor,
.dtor = _nouveau_instmem_dtor,
.init = _nouveau_instmem_init,
.fini = nv50_instmem_fini,
},
};
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