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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowof.c
2 * Copyright 2012 Red Hat Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
26 #if defined(__powerpc__)
28 const void __iomem
*data
;
33 of_read(void *data
, u32 offset
, u32 length
, struct nvkm_bios
*bios
)
35 struct priv
*priv
= data
;
36 if (offset
+ length
<= priv
->size
) {
37 memcpy_fromio(bios
->data
+ offset
, priv
->data
+ offset
, length
);
44 of_init(struct nvkm_bios
*bios
, const char *name
)
46 struct pci_dev
*pdev
= bios
->subdev
.device
->func
->pci(bios
->subdev
.device
)->pdev
;
47 struct device_node
*dn
;
49 if (!(dn
= pci_device_to_OF_node(pdev
)))
50 return ERR_PTR(-ENODEV
);
51 if (!(priv
= kzalloc(sizeof(*priv
), GFP_KERNEL
)))
52 return ERR_PTR(-ENOMEM
);
53 if ((priv
->data
= of_get_property(dn
, "NVDA,BMP", &priv
->size
)))
56 return ERR_PTR(-EINVAL
);
59 const struct nvbios_source
61 .name
= "OpenFirmware",
63 .fini
= (void(*)(void *))kfree
,
68 const struct nvbios_source