101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
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/*
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* Copyright 2015 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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* Authors: Ben Skeggs <bskeggs@redhat.com>
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*/
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#include <core/pci.h>
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#include "priv.h"
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static struct nvkm_device_pci *
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nvkm_device_pci(struct nvkm_device *device)
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{
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return container_of(device, struct nvkm_device_pci, device);
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}
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static void
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nvkm_device_pci_fini(struct nvkm_device *device, bool suspend)
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{
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struct nvkm_device_pci *pdev = nvkm_device_pci(device);
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if (suspend) {
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pci_disable_device(pdev->pdev);
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pdev->suspend = true;
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}
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}
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static int
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nvkm_device_pci_preinit(struct nvkm_device *device)
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{
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struct nvkm_device_pci *pdev = nvkm_device_pci(device);
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if (pdev->suspend) {
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int ret = pci_enable_device(pdev->pdev);
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if (ret)
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return ret;
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pci_set_master(pdev->pdev);
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pdev->suspend = false;
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}
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return 0;
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}
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static void *
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nvkm_device_pci_dtor(struct nvkm_device *device)
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{
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struct nvkm_device_pci *pdev = nvkm_device_pci(device);
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pci_disable_device(pdev->pdev);
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return pdev;
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}
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static const struct nvkm_device_func
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nvkm_device_pci_func = {
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.pci = nvkm_device_pci,
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.dtor = nvkm_device_pci_dtor,
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.preinit = nvkm_device_pci_preinit,
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.fini = nvkm_device_pci_fini,
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};
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int
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nvkm_device_pci_new(struct pci_dev *pci_dev, const char *cfg, const char *dbg,
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bool detect, bool mmio, u64 subdev_mask,
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struct nvkm_device **pdevice)
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{
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struct nvkm_device_pci *pdev;
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int ret;
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ret = pci_enable_device(pci_dev);
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if (ret)
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return ret;
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if (!(pdev = kzalloc(sizeof(*pdev), GFP_KERNEL))) {
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pci_disable_device(pci_dev);
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return -ENOMEM;
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}
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*pdevice = &pdev->device;
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pdev->pdev = pci_dev;
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return nvkm_device_ctor(&nvkm_device_pci_func, NULL,
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pci_dev, NVKM_BUS_PCI,
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(u64)pci_domain_nr(pci_dev->bus) << 32 |
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pci_dev->bus->number << 16 |
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PCI_SLOT(pci_dev->devfn) << 8 |
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PCI_FUNC(pci_dev->devfn), NULL,
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cfg, dbg, detect, mmio, subdev_mask,
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&pdev->device);
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}
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