| Ben Skeggs | 7974dd1 | 2015-08-20 14:54:17 +1000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 Red Hat Inc. |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice shall be included in |
| 12 | * all copies or substantial portions of the Software. |
| 13 | * |
| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 20 | * OTHER DEALINGS IN THE SOFTWARE. |
| 21 | * |
| 22 | * Authors: Ben Skeggs <bskeggs@redhat.com> |
| 23 | */ |
| 24 | #include <core/pci.h> |
| 25 | #include "priv.h" |
| 26 | |
| 27 | static struct nvkm_device_pci * |
| 28 | nvkm_device_pci(struct nvkm_device *device) |
| 29 | { |
| 30 | return container_of(device, struct nvkm_device_pci, device); |
| 31 | } |
| 32 | |
| 33 | static void |
| 34 | nvkm_device_pci_fini(struct nvkm_device *device, bool suspend) |
| 35 | { |
| 36 | struct nvkm_device_pci *pdev = nvkm_device_pci(device); |
| 37 | if (suspend) { |
| 38 | pci_disable_device(pdev->pdev); |
| 39 | pdev->suspend = true; |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | static int |
| 44 | nvkm_device_pci_preinit(struct nvkm_device *device) |
| 45 | { |
| 46 | struct nvkm_device_pci *pdev = nvkm_device_pci(device); |
| 47 | if (pdev->suspend) { |
| 48 | int ret = pci_enable_device(pdev->pdev); |
| 49 | if (ret) |
| 50 | return ret; |
| 51 | pci_set_master(pdev->pdev); |
| 52 | pdev->suspend = false; |
| 53 | } |
| 54 | return 0; |
| 55 | } |
| 56 | |
| 57 | static void * |
| 58 | nvkm_device_pci_dtor(struct nvkm_device *device) |
| 59 | { |
| 60 | struct nvkm_device_pci *pdev = nvkm_device_pci(device); |
| 61 | pci_disable_device(pdev->pdev); |
| 62 | return pdev; |
| 63 | } |
| 64 | |
| 65 | static const struct nvkm_device_func |
| 66 | nvkm_device_pci_func = { |
| 67 | .pci = nvkm_device_pci, |
| 68 | .dtor = nvkm_device_pci_dtor, |
| 69 | .preinit = nvkm_device_pci_preinit, |
| 70 | .fini = nvkm_device_pci_fini, |
| 71 | }; |
| 72 | |
| 73 | int |
| 74 | nvkm_device_pci_new(struct pci_dev *pci_dev, const char *cfg, const char *dbg, |
| 75 | bool detect, bool mmio, u64 subdev_mask, |
| 76 | struct nvkm_device **pdevice) |
| 77 | { |
| 78 | struct nvkm_device_pci *pdev; |
| 79 | int ret; |
| 80 | |
| 81 | ret = pci_enable_device(pci_dev); |
| 82 | if (ret) |
| 83 | return ret; |
| 84 | |
| 85 | if (!(pdev = kzalloc(sizeof(*pdev), GFP_KERNEL))) { |
| 86 | pci_disable_device(pci_dev); |
| 87 | return -ENOMEM; |
| 88 | } |
| 89 | *pdevice = &pdev->device; |
| 90 | pdev->pdev = pci_dev; |
| 91 | |
| 92 | return nvkm_device_ctor(&nvkm_device_pci_func, NULL, |
| 93 | pci_dev, NVKM_BUS_PCI, |
| 94 | (u64)pci_domain_nr(pci_dev->bus) << 32 | |
| 95 | pci_dev->bus->number << 16 | |
| 96 | PCI_SLOT(pci_dev->devfn) << 8 | |
| 97 | PCI_FUNC(pci_dev->devfn), NULL, |
| 98 | cfg, dbg, detect, mmio, subdev_mask, |
| 99 | &pdev->device); |
| 100 | } |