65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
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/*
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* Copyright 2012 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include "priv.h"
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#include <subdev/pci.h>
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static u32
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nvbios_prom_read(void *data, u32 offset, u32 length, struct nvkm_bios *bios)
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{
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struct nvkm_device *device = data;
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u32 i;
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if (offset + length <= 0x00100000) {
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for (i = offset; i < offset + length; i += 4)
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*(u32 *)&bios->data[i] = nvkm_rd32(device, 0x300000 + i);
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return length;
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}
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return 0;
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}
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static void
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nvbios_prom_fini(void *data)
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{
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struct nvkm_device *device = data;
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nvkm_pci_rom_shadow(device->pci, true);
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}
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static void *
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nvbios_prom_init(struct nvkm_bios *bios, const char *name)
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{
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struct nvkm_device *device = bios->subdev.device;
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if (device->card_type == NV_40 && device->chipset >= 0x4c)
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return ERR_PTR(-ENODEV);
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nvkm_pci_rom_shadow(device->pci, false);
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return device;
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}
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const struct nvbios_source
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nvbios_prom = {
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.name = "PROM",
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.init = nvbios_prom_init,
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.fini = nvbios_prom_fini,
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.read = nvbios_prom_read,
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.rw = false,
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};
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