cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadowof.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 <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; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs6078.95%266.67%
Ilia Mirkin1621.05%133.33%
Total76100.00%3100.00%


static u32 of_size(void *data) { struct priv *priv = data; return priv->size; }

Contributors

PersonTokensPropCommitsCommitProp
Ilia Mirkin2195.45%150.00%
Ben Skeggs14.55%150.00%
Total22100.00%2100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs11687.22%360.00%
Ilia Mirkin107.52%120.00%
Dave Airlie75.26%120.00%
Total133100.00%5100.00%

const struct nvbios_source nvbios_of = { .name = "OpenFirmware", .init = of_init, .fini = (void(*)(void *))kfree, .read = of_read, .size = of_size, .rw = false, .ignore_checksum = true, .no_pcir = true, }; #else const struct nvbios_source nvbios_of = { }; #endif

Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs25477.91%360.00%
Ilia Mirkin6219.02%120.00%
Dave Airlie103.07%120.00%
Total326100.00%5100.00%
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