135 lines
3.1 KiB
C
135 lines
3.1 KiB
C
/*
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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 <core/pci.h>
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struct priv {
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struct pci_dev *pdev;
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void __iomem *rom;
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size_t size;
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};
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static u32
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pcirom_read(void *data, u32 offset, u32 length, struct nvkm_bios *bios)
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{
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struct priv *priv = data;
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if (offset + length <= priv->size) {
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memcpy_fromio(bios->data + offset, priv->rom + offset, length);
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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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pcirom_fini(void *data)
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{
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struct priv *priv = data;
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pci_unmap_rom(priv->pdev, priv->rom);
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pci_disable_rom(priv->pdev);
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kfree(priv);
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}
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static void *
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pcirom_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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struct priv *priv = NULL;
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struct pci_dev *pdev;
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int ret;
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if (device->func->pci)
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pdev = device->func->pci(device)->pdev;
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else
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return ERR_PTR(-ENODEV);
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if (!(ret = pci_enable_rom(pdev))) {
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if (ret = -ENOMEM,
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(priv = kmalloc(sizeof(*priv), GFP_KERNEL))) {
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if (ret = -EFAULT,
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(priv->rom = pci_map_rom(pdev, &priv->size))) {
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priv->pdev = pdev;
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return priv;
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}
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kfree(priv);
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}
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pci_disable_rom(pdev);
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}
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return ERR_PTR(ret);
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}
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const struct nvbios_source
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nvbios_pcirom = {
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.name = "PCIROM",
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.init = pcirom_init,
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.fini = pcirom_fini,
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.read = pcirom_read,
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.rw = true,
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};
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static void *
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platform_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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struct pci_dev *pdev;
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struct priv *priv;
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int ret = -ENOMEM;
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if (device->func->pci)
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pdev = device->func->pci(device)->pdev;
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else
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return ERR_PTR(-ENODEV);
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if (!pdev->rom || pdev->romlen == 0)
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return ERR_PTR(-ENODEV);
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if ((priv = kmalloc(sizeof(*priv), GFP_KERNEL))) {
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priv->size = pdev->romlen;
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if (ret = -ENODEV,
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(priv->rom = ioremap(pdev->rom, pdev->romlen)))
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return priv;
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kfree(priv);
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}
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return ERR_PTR(ret);
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}
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static void
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platform_fini(void *data)
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{
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struct priv *priv = data;
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iounmap(priv->rom);
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kfree(priv);
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}
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const struct nvbios_source
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nvbios_platform = {
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.name = "PLATFORM",
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.init = platform_init,
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.fini = platform_fini,
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.read = pcirom_read,
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.rw = true,
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};
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