/*
* 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 .
*
*/
#include "priv.h"
#include <core/pci.h>
#if defined (__powerpc__)
struct priv {
const void __iomem *data;
int size;
};
static u32
of_read(void *data, u32 offset, u32 length, struct nvkm_bios *bios)
{
struct priv *priv = data;
if (offset < priv->size) {
length = min_t(u32, length, priv->size - offset);
memcpy_fromio(bios->data + offset, priv->data + offset, length);
return length;
}
return 0 ;
}
static u32
of_size(void *data)
{
struct priv *priv = data;
return priv->size;
}
static void *
of_init(struct nvkm_bios *bios, const char *name)
{
struct nvkm_device *device = bios->subdev.device;
struct pci_dev *pdev = device->func->pci(device)->pdev;
struct device_node *dn;
struct priv *priv;
if (!(dn = pci_device_to_OF_node(pdev)))
return ERR_PTR(-ENODEV);
if (!(priv = kzalloc(sizeof (*priv), GFP_KERNEL)))
return ERR_PTR(-ENOMEM);
if ((priv->data = of_get_property(dn, "NVDA,BMP" , &priv->size)))
return priv;
kfree(priv);
return ERR_PTR(-EINVAL);
}
static void of_fini(void *p)
{
kfree(p);
}
const struct nvbios_source
nvbios_of = {
.name = "OpenFirmware" ,
.init = of_init,
.fini = of_fini,
.read = of_read,
.size = of_size,
.rw = false ,
.ignore_checksum = true ,
.no_pcir = true ,
};
#else
const struct nvbios_source
nvbios_of = {
};
#endif
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