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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.
*
*/
#include "priv.h"
#include <subdev/pci.h>
static u32
nvbios_prom_read(void *data, u32 offset, u32 length, struct nvkm_bios *bios)
{
struct nvkm_device *device = data;
u32 i;
if (offset + length <= 0x00100000) {
for (i = offset; i < offset + length; i += 4)
*(u32 *)&bios->data[i] = nvkm_rd32(device, 0x300000 + i);
return length;
}
return 0;
}
static void
nvbios_prom_fini(void *data)
{
struct nvkm_device *device = data;
nvkm_pci_rom_shadow(device->pci, true);
}
static void *
nvbios_prom_init(struct nvkm_bios *bios, const char *name)
{
struct nvkm_device *device = bios->subdev.device;
if (device->card_type == NV_40 && device->chipset >= 0x4c)
return ERR_PTR(-ENODEV);
nvkm_pci_rom_shadow(device->pci, false);
return device;
}
const struct nvbios_source
nvbios_prom = {
.name = "PROM",
.init = nvbios_prom_init,
.fini = nvbios_prom_fini,
.read = nvbios_prom_read,
.rw = false,
};
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