projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 61e115a5 MB |
1 | /* |
| 2 | * Sonics Silicon Backplane | |
| 3 | * PCI Hostdevice wrapper | |
| 4 | * | |
| 5 | * Copyright (c) 2005 Martin Langer <[email protected]> | |
| 6 | * Copyright (c) 2005 Stefano Brivio <[email protected]> | |
| 7 | * Copyright (c) 2005 Danny van Dyk <[email protected]> | |
| 8 | * Copyright (c) 2005 Andreas Jaggi <[email protected]> | |
| 9 | * Copyright (c) 2005-2007 Michael Buesch <[email protected]> | |
| 10 | * | |
| 11 | * Licensed under the GNU/GPL. See COPYING for details. | |
| 12 | */ | |
| 13 | ||
| 14 | #include <linux/pci.h> | |
| 15 | #include <linux/ssb/ssb.h> | |
| 16 | ||
| 17 | ||
| 18 | #ifdef CONFIG_PM | |
| 19 | static int ssb_pcihost_suspend(struct pci_dev *dev, pm_message_t state) | |
| 20 | { | |
| 8fe2b65a MB |
21 | struct ssb_bus *ssb = pci_get_drvdata(dev); |
| 22 | int err; | |
| 23 | ||
| 24 | err = ssb_bus_suspend(ssb); | |
| 25 | if (err) | |
| 26 | return err; | |
| 61e115a5 MB |
27 | pci_save_state(dev); |
| 28 | pci_disable_device(dev); | |
| 29 | pci_set_power_state(dev, pci_choose_state(dev, state)); | |
| 30 | ||
| 31 | return 0; | |
| 32 | } | |
| 33 | ||
| 34 | static int ssb_pcihost_resume(struct pci_dev *dev) | |
| 35 | { | |
| 8fe2b65a | 36 | struct ssb_bus *ssb = pci_get_drvdata(dev); |
| 61e115a5 MB |
37 | int err; |
| 38 | ||
| 39 | pci_set_power_state(dev, 0); | |
| 40 | err = pci_enable_device(dev); | |
| 41 | if (err) | |
| 42 | return err; | |
| 43 | pci_restore_state(dev); | |
| 8fe2b65a MB |
44 | err = ssb_bus_resume(ssb); |
| 45 | if (err) | |
| 46 | return err; | |
| 61e115a5 MB |
47 | |
| 48 | return 0; | |
| 49 | } | |
| 50 | #else /* CONFIG_PM */ | |
| 51 | # define ssb_pcihost_suspend NULL | |
| 52 | # define ssb_pcihost_resume NULL | |
| 53 | #endif /* CONFIG_PM */ | |
| 54 | ||
| 55 | static int ssb_pcihost_probe(struct pci_dev *dev, | |
| 56 | const struct pci_device_id *id) | |
| 57 | { | |
| 58 | struct ssb_bus *ssb; | |
| 59 | int err = -ENOMEM; | |
| 60 | const char *name; | |
| 61 | ||
| 62 | ssb = kzalloc(sizeof(*ssb), GFP_KERNEL); | |
| 63 | if (!ssb) | |
| 64 | goto out; | |
| 65 | err = pci_enable_device(dev); | |
| 66 | if (err) | |
| 67 | goto err_kfree_ssb; | |
| b7b05fe7 | 68 | name = dev_name(&dev->dev); |
| 61e115a5 MB |
69 | if (dev->driver && dev->driver->name) |
| 70 | name = dev->driver->name; | |
| 71 | err = pci_request_regions(dev, name); | |
| 72 | if (err) | |
| 73 | goto err_pci_disable; | |
| 74 | pci_set_master(dev); | |
| 75 | ||
| 76 | err = ssb_bus_pcibus_register(ssb, dev); | |
| 77 | if (err) | |
| 78 | goto err_pci_release_regions; | |
| 79 | ||
| 80 | pci_set_drvdata(dev, ssb); | |
| 81 | ||
| 82 | out: | |
| 83 | return err; | |
| 84 | ||
| 85 | err_pci_release_regions: | |
| 86 | pci_release_regions(dev); | |
| 87 | err_pci_disable: | |
| 88 | pci_disable_device(dev); | |
| 89 | err_kfree_ssb: | |
| 90 | kfree(ssb); | |
| 91 | return err; | |
| 92 | } | |
| 93 | ||
| 94 | static void ssb_pcihost_remove(struct pci_dev *dev) | |
| 95 | { | |
| 96 | struct ssb_bus *ssb = pci_get_drvdata(dev); | |
| 97 | ||
| 98 | ssb_bus_unregister(ssb); | |
| 99 | pci_release_regions(dev); | |
| 100 | pci_disable_device(dev); | |
| 101 | kfree(ssb); | |
| 102 | pci_set_drvdata(dev, NULL); | |
| 103 | } | |
| 104 | ||
| 105 | int ssb_pcihost_register(struct pci_driver *driver) | |
| 106 | { | |
| 107 | driver->probe = ssb_pcihost_probe; | |
| 108 | driver->remove = ssb_pcihost_remove; | |
| 109 | driver->suspend = ssb_pcihost_suspend; | |
| 110 | driver->resume = ssb_pcihost_resume; | |
| 111 | ||
| 112 | return pci_register_driver(driver); | |
| 113 | } | |
| 114 | EXPORT_SYMBOL(ssb_pcihost_register); |