cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowrom.c

/*
 * 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 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; }

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Ben Skeggs85100.00%3100.00%
Total85100.00%3100.00%


static void prom_fini(void *data) { struct nvkm_device *device = data; nvkm_pci_rom_shadow(device->pci, true); }

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Ben Skeggs26100.00%3100.00%
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static void * 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; }

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Ben Skeggs61100.00%4100.00%
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const struct nvbios_source nvbios_rom = { .name = "PROM", .init = prom_init, .fini = prom_fini, .read = prom_read, .rw = false, };

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Ben Skeggs211100.00%4100.00%
Total211100.00%4100.00%
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